By Use Of Means Acting By And During Machine Operation To Form Coil Of Irregular Pitch And/or Diameter Patents (Class 72/138)
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Patent number: 11052450Abstract: A spring forming machine having tool rotation and tool retraction capabilities, that includes: a rotary beak seat mechanism and a dual-transmission core rotation separation mechanism. The rotary beak seat mechanism is installed on a transmission mechanism of an outside machine panel board through a panel board bearing. The rotary beak seat mechanism includes a rotation component, that rotates 360 degrees around a central axis of the panel board bearing. On a front end of the rotation component is disposed a slide seat component coaxially. The dual-transmission core rotation separation mechanism includes: a first substrate, in a center of a front plate surface of the first substrate is disposed the rotary beak seat mechanism, on a back plate surface of the first substrate is disposed an axle core positioning mechanism, an inner circle core rotation transmission mechanism, and an outer circle tool rotation transmission mechanism.Type: GrantFiled: October 13, 2019Date of Patent: July 6, 2021Assignee: HUIZHOU ODMAY MACHINERY CO., LTD.Inventors: Song-Wei Ye, Xiao-Hong Zhou, Jian-Ming Long
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Patent number: 11033945Abstract: A skate blade bending apparatus (35) may feature a unitary body (1) with a securement structure (10, 15) which holds a skate blade on its side, parallel to the ground, and a means for exerting downward force (8) on the side of the skate blade. The securement structure may feature movable anvils 15 which will change the imparted radius of curvature imparted upon the blade. Indicia (29) may be utilized to position said anvils (15) to ensure the process is repeatable on different blades. A handle (14) used with the means for exerting downward force (8) may be adjustable. The means for exerting downward force (8) and anvils (15) may be interchangeable with other shapes of similar structures for greater versatility.Type: GrantFiled: September 29, 2017Date of Patent: June 15, 2021Inventors: Thomas Di Nardo, Christopher Needham, Michael Gomm, Chris Lauridsen
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Patent number: 8978434Abstract: A method for making a variable pitch spring (9), in which a spring wire (1) is bent using bending lugs (5, 6) so as to impart a spiral configuration thereto, a gap is formed between the turns by placing, between the turns being formed, the beveled side of a rotary disc (2) having a rotation synchronized with the spring wire supply, the disc (2) having a beveled profile that varies along the periphery of the disc, and the spring wire is cut (3) at the end of the formation of each spring.Type: GrantFiled: October 26, 2009Date of Patent: March 17, 2015Assignee: Ressorts Huon DuboisInventor: Serge Huon
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Patent number: 8833130Abstract: A tissue fastener production method of clamping two living tissues together by bringing the two living tissues into close contact includes the following steps: fixing one end of a wire material made of a metal to a shaft body, and winding the wire material around an outer periphery of the shaft body while twisting the wire material round an axis of the wire material, thereby forming a coil on which a predetermined force is exerted in the winding direction; heat treating the wire material to impart superelasticity thereto; and deforming the wire material to which the superelasticity is imparted in a range in which the wire material is elastically deformable, and reversing the winding direction of the coil in a direction reverse to the winding direction of the coil wound in the step of forming the coil so as to obtain an initial tension corresponding to the predetermined force.Type: GrantFiled: January 25, 2012Date of Patent: September 16, 2014Assignee: Olympus Medical Systems Corp.Inventors: Rei Matsunaga, Masatoshi Sato, Kunihide Kaji, Shinji Takahashi
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Patent number: 8621905Abstract: An apparatus for producing inserts for steam generator tubes is provided. The apparatus is intended to allow a technically particularly simple production process, and consequently allow particularly high-speed production of inserts. For this purpose, the apparatus includes a winding head with a wire guiding pin, a guiding opening for a former shaft, provided with a number of spiral slots, and a pressure roller, the wire guiding pin, the guiding opening and the pressure roller being arranged in such a way that a tangent of the pressure roller and of a slot of the former shaft and the guiding axis of wire guiding pin substantially coincide.Type: GrantFiled: May 9, 2011Date of Patent: January 7, 2014Assignee: Siemens AktiengesellschaftInventors: Jan Brückner, Martin Effert, Joachim Franke
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Patent number: 8424352Abstract: An apparatus and method for manufacturing a barrel coil spring make it possible to coil opposite sides of a spring material at the same time so as to considerably reduce manufacturing processing, thereby remarkably reducing the time required to manufacture the coil barrel spring, thus improving productivity.Type: GrantFiled: March 18, 2008Date of Patent: April 23, 2013Assignee: Dae Won Kang Up Co., Ltd.Inventors: Chan-Gi Jung, Soon-Sam Hong
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Publication number: 20130036783Abstract: A load characteristic adjustment system for use with a linear-spring forming apparatus is provided, in which the load characteristic of a conic spring can be conveniently and efficiently regulated during the formation of the spring, thereby reliving much of a physical burden of a worker to find an optimum load characteristic of a coil spring. The load characteristics adjustment system comprises: a linear material feeder for feeding a linear material; at least one spring forming tool facing the linear material feeder, adapted to abut against the linear material to coil the linear material; spiraling means for spiraling the coiled linear material; and coil-diameter varying means for varying the diameter of the coiled linear material. The load characteristic adjustment system controls the linear material feeder so as to feed the linear material at a regulated constant acceleration to adjust the load characteristic of the conical spring formed.Type: ApplicationFiled: October 19, 2012Publication date: February 14, 2013Applicant: ORII & MEC CORPORATIONInventor: ORII & MEC CORPORATION
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Patent number: 7971462Abstract: A system and method for producing a cable hanger formed by alternately and continuously forming the Z-winding spiral and the S-winding spiral using the hanger wire. The system and method involve the use of at least five spiral forming dice accommodated in a cylindrical space of the housing such that the spiral forming dice are adjacent to each other and can rotate independently from one another.Type: GrantFiled: April 21, 2008Date of Patent: July 5, 2011Assignee: Kyoei High Opt Co., Ltd.Inventors: Minoru Nakamura, Hiroshi Iwase
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Patent number: 7676297Abstract: A spring-forming control system and its control method for a spring forming machine in which the spring-forming control system uses a host computer to provide graphical spring parameter setting, program modification, and dragline-method program modification graphical interfaces that are selectively switchable on a display monitor. After setting of spring processing parameters through the spring parameter setting interface, a trial production is done subject to a spring parameter auto-generation software built in the spring-forming control system, and then the production is started if the trial meets the requirements, or the spring processing parameters are modified through the spring parameter setting interface, program modification interface, or dragline-method program modification interface if the trial does not meet the requirements, and then a further trial production is performed till the shaped spring meets the requirements.Type: GrantFiled: September 7, 2007Date of Patent: March 9, 2010Assignee: Tzyh Ru Shyng Automation Co., Ltd.Inventor: Chih-Fu Chang
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Publication number: 20080302156Abstract: This invention provides an apparatus for manufacturing a helical part by feeding a wire W toward a pointing tool 21 and pushing the wire W against the pointing tool 21 to forcibly wind the wire. The apparatus comprises: a feed roller 12 for feeding the wire W toward the pointing tool 21; a wire feeding motor 111 for rotatably driving the feed roller; a grindstone tool unit 30, which holds a discoid grindstone 31 rotatable and movable, for cutting the wire W by the rotating discoid-grindstone 31; and a CPU 100 for controlling the wire feeding motor 111 and grindstone tool unit 30 to move the discoid grindstone 31 on a plane which is substantially perpendicular to a coil growing direction of the helical part and to cut the wire W in a direction which is substantially perpendicular to the coil growing direction.Type: ApplicationFiled: June 3, 2008Publication date: December 11, 2008Applicant: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya
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Publication number: 20080257003Abstract: Apparatus for producing wire springs comprising: a first working station (1) including a wire support (2) and cutting means (3) adapted to cut the wire against said support, a second working station (5) including a rod (6) about which the wire is wound, and clamping means (10, 11) for securing the wire against an end portion of said rod (6), these means (10, 11) being constituted by two controllable vices (10, 11) arranged in diametrically opposed positions with respect to the axis of said rod (6). In the portion thereof facing said rod (6), these vices (10, 11) are so shaped as to show a respective planar or slightly concave surface towards said rod (6). Wire cutting occurs according to a radial sectioning plane with respect to the support (2) and is arranged so that the spring is cut in a manner that the wire remaining on said support (2) is wound thereabout by a greater angle than 180°.Type: ApplicationFiled: May 30, 2005Publication date: October 23, 2008Inventor: Romeo Bordignon
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Publication number: 20080245122Abstract: Method of production of springs made of wire of circular or other type crossectional area, that are produced after having formed first springs (6) of constant diameter smaller or equal to that of the final spring (7) and of constant pitch smaller or equal to the smallest pitch of the final spring (7), where by compressing in a controlled fashion the spring turn of the initial spring (6) from the interior direction towards the outer one and from the lower sides towards the spiral direction the selected pitch and the diameter of the final spring (7) are formed. The invention also relates to a system that is comprised of a main roller (1) with motion rollers (2), (3), (4) that are contacting it peripherally and a pin (5) in an elbow (12) that is connected to an axle (10) situated upon a base (11) that is capable of moving along its longitudinal axis and to revolve around it, transmitting through the elbow (12) the motion to the pin (5) so as to form the diameter and the pitch of the final spring (7).Type: ApplicationFiled: October 1, 2004Publication date: October 9, 2008Inventors: Panagiotis Anagnostopoulos, Antonios Anagnostopoulos
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Patent number: 7353680Abstract: The compression spring former disclosed by the present invention contains an external diameter mechanism, spacing mechanism, wire-feeding mechanism, cutting mechanism, length-detecting mechanism, sorting mechanism, and microcomputer control mechanism. Within the working range, specific springs can be formed simply by inputting the parameters describing the external diameter, spacing, roll number, and other allowance requirements. The control mechanism has a built-in length detecting and automatic sorting mechanism, which can modify the spring spacing according to different free heights, ensuring the allowance of free height. The cutter has a working mode for repeated cutting. The lowest point of the cutter shaft is set to “0” degrees for cutting the springs. If the cutter swings from positive 20 degrees to negative 20 degrees, or from negative 20 degrees to positive 20 degrees, the spring will be cut. That is to say, a spring is produced in every rotation of 40 degrees.Type: GrantFiled: September 6, 2006Date of Patent: April 8, 2008Inventor: Jin-Tarng Huang
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Patent number: 7143620Abstract: The slide motions of tools mounted on tool units (400A, 400B, 400C) are realized by a single ring gear (10) serving as a common driving force for all the tool units and arranged on a forming table (200), and cam shaft blocks (20) for transmitting the rotation force of the ring gear (10) to the tool units (400A, 400B, 400C). The cam shaft blocks (20) are formed separately from the tool units (400A, 400B, 400C). The angles of arrangement of the cam shaft blocks (20) on the forming table (200) can be changed independently of the tool units (400A, 400B, 400C).Type: GrantFiled: August 13, 2003Date of Patent: December 5, 2006Assignee: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya
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Patent number: 7107806Abstract: In order that a moving locus of a leading end of a tool 55 provided to a tool mounting device 54 is aligned with a direction orthogonal to a center line W of a wire rod passage (not shown) of a final wire rod guide 13, a tool operating apparatus 22 has a position adjusting table 23 movable forward and backward and movable to optional positions within a virtual vertical plane parallel to a front wall 5 of an upper portion 2B of a fixed machine casing 2, a rotating body 46 provided to the position adjusting table 23 rotatably around a rotation center line C parallel to the center line W of the wire rod passage of the final wire rod guide 13, and a tool mounting device 54 provided in the rotating body 46 movably in parallel in a direction orthogonal to the rotation center line C.Type: GrantFiled: January 14, 2004Date of Patent: September 19, 2006Assignee: Shinko Machinery Co., Ltd.Inventor: Katsuhide Tsuritani
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Patent number: 7080537Abstract: To efficiently manufacture springs having various kinds of shapes, a spring manufacturing machine is structured such as to bend a wire by two inner engagement projections (47) by adjusting a position of a position adjusting table (34), fitting a gap (46) to the wire fed out from a final wire guide (13) and temporarily stopping, and thereafter rotating a rotation spindle (48), and also to bend a wire on the basis of a cooperation of an outer engagement projection (44) and the inner engagement projection (47) by adjusting the position of the position adjusting table (34), fitting the gap (46) to the wire fed out from the final wire guide (13) and temporarily stopping, and thereafter rotating a rotation sleeve (45).Type: GrantFiled: June 5, 2003Date of Patent: July 25, 2006Assignee: Shinko Machinery Co., Ltd.Inventor: Katsuhide Tsuritani
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Patent number: 7024901Abstract: A high-speed wire spring forming apparatus capable of easily adjusting a coil diameter is provided that includes: a wire feeder having a pair of feeding rollers for feeding a wire to a spring forming stage via a quill serving as a wire guide; a revolving mechanism for revolving the feeding rollers about the axis of the wire to twist the wire fed out of the leading end of the quill to change the circumferential position, or angular position, of the wire; and a multiplicity of spring forming tools arranged radially on a spring forming stage, each of the spring forming tools movable in a direction substantially perpendicular to the axis of the wire.Type: GrantFiled: October 7, 2003Date of Patent: April 11, 2006Assignee: Orii & Mec CorporationInventors: Sinichi Yamaguchi, Naoki Haruyama
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Patent number: 6948348Abstract: A spring coil assembly having a first row of coils arranged in a first spacing pattern and a second row of coils adjacent the first row and arranged in a second spacing pattern that is different from the first spacing pattern. The spring coil assembly can be assembled using an apparatus comprising a main conveyor adapted to convey a plurality of coils along an axis, an assembler which is operable to intertwine a plurality of coils into a spring coil assembly, and a transfer station operable to move a plurality of coils from the main conveyor into the assembler. The transfer station includes a plurality of pusher arms each of which include a gripper which is operable to grasp an individual coil, a carriage supporting the gripper arms and means for shifting the carriage axially relative to the axis so that a plurality of coils carried by the gripper arms are displaced in the direction of travel of the conveyor.Type: GrantFiled: January 5, 2004Date of Patent: September 27, 2005Assignee: Frank L. Wells CompanyInventors: David Scott Wells, George M. Chembakassery, Michael E. Andrea
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Patent number: 6928846Abstract: In a cold coil forming process, a pitch control tool is moved in synchronism with the displacement of the outer diameter control roller so as to form a coil spring having a straight and oblique axial line, and, at the same time, maintain a pitch of the coil wire substantially constant substantially over an entire length thereof. Thus, the method of the present invention can be implemented by using a conventional coiling machine only if the outer diameter control roller and the pitch control tool can be adjusted as required by the present invention. In particular, the pitch of the coil spring can be kept constant over each turn of the coil wire without regard to the variation in the radius of curvature of the coil spring.Type: GrantFiled: January 22, 2003Date of Patent: August 16, 2005Assignee: NHK Spring Co., Ltd.Inventor: Takeshi Furuse
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Patent number: 6836964Abstract: A method for producing a helical spring by coiling an element wire while feeding the wire, and performing an after-treatment includes at least a warm setting process.Type: GrantFiled: February 20, 2003Date of Patent: January 4, 2005Assignee: Chuo Hatsujo Kabushiki KaishaInventors: Keiji Hasegawa, Shinsuke Okura
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Publication number: 20040154365Abstract: In order that a moving locus of a leading end of a tool 55 provided to a tool mounting device 54 is aligned with a direction orthogonal to a center line W of a wire rod passage (not shown) of a final wire rod guide 13, a tool operating apparatus 22 has a position adjusting table 23 movable forward and backward and movable to optional positions within a virtual vertical plane parallel to a front wall 5 of an upper portion 2B of a fixed machine casing 2, a rotating body 46 provided to the position adjusting table 23 rotatably around a rotation center line C parallel to the center line W of the wire rod passage of the final wire rod guide 13, and a tool mounting device 54 provided in the rotating body 46 movably in parallel in a direction orthogonal to the rotation center line C.Type: ApplicationFiled: January 14, 2004Publication date: August 12, 2004Inventor: Katsuhide Tsuritani
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Patent number: 6758079Abstract: A coil spring forming machine for forming a coil spring having a dimensional characteristic, such as a coil diameter and a coil pitch, includes a frame, a control tool movably mounted on the frame, and a control mechanism mounted on the frame and coupled to the control tool. The control mechanism is operable to move the control tool to vary the dimensional characteristic. The control mechanism includes first and second cam surfaces and a cam follower assembly selectively engageable with either of the first and second cam surfaces to vary the dimensional characteristic depending on which cam surface is engaged.Type: GrantFiled: June 20, 2001Date of Patent: July 6, 2004Assignee: Frank L. Wells CompanyInventors: David Scott Wells, George T. Vattakattu
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Publication number: 20040000180Abstract: In a cold coil forming process, a pitch control tool is moved in synchronism with the displacement of the outer diameter control roller so as to form a coil spring having a straight and oblique axial line, and, at the same time, maintain a pitch of the coil wire substantially constant substantially over an entire length thereof. Thus, the method of the present invention can be implemented by using a conventional coiling machine only if the outer diameter control roller and the pitch control tool can be adjusted as required by the present invention. In particular, the pitch of the coil spring can be kept constant over each turn of the coil wire without regard to the variation in the radius of curvature of the coil spring.Type: ApplicationFiled: January 22, 2003Publication date: January 1, 2004Applicant: NHK Spring Co., Ltd.Inventor: Takeshi Furuse
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Patent number: 6648996Abstract: The present invention is directed to a method for producing a helical spring which comprises the steps of providing a plurality of parameters for defining a desired configuration of a target helical spring, setting at least bending positions and twisting positions on the basis of the plurality of parameters, and bending and twisting the element wire at the positions set in response to every predetermined feeding amount of the element wire, to produce the target helical spring. The parameters includes number of coils, coil diameter and lead of the target helical spring. At least the bending positions may be adjusted in response to the cycle of alternating diameters between a local maximum diameter and a local minimum diameter of the target helical spring.Type: GrantFiled: October 15, 2001Date of Patent: November 18, 2003Assignee: Chuo Hatsujo Kabushiki KaishaInventor: Keiji Hasegawa
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Patent number: 6640836Abstract: Machinery for automated manufacture of formed wire structures such as innerspring assemblies for mattresses and seating and flexible support structures includes one or more coil formation devices configured to produce generally helical spring coils having a terminal convolution which extends beyond an end of the coil; a conveyor system having a plurality of flights slidably mounted upon a continuous track and connected to a chain and driven by an index driver; a coil transfer machine which removes a row of coils from the conveyor and inserts the coils into an innerspring assembler; and an innerspring assembler. A coil forming block on a coiler machine has a cavity in which a terminal convolution of the coil is formed, and from which the coil is cut by a cutter which extends into the cavity.Type: GrantFiled: November 28, 2000Date of Patent: November 4, 2003Assignee: Sealy Technology LLCInventors: Thomas D. Haubert, Jan B. Yates
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Publication number: 20030192359Abstract: A spring making machine includes a curling device and a feeding device. The curling device has a shaft which is driven by a first servo motor so as to ensure the precise movement of the metal line. The feeding device has a second servo motor connected to the shaft and the rotor of the second servo motor has a hole through which the shaft extends. The rotor of the second servo motor is engaged with the gear for feeding the metal line on the shaft so as to reduce the volume the mechanism occupies.Type: ApplicationFiled: April 10, 2002Publication date: October 16, 2003Applicant: Minyu Machinery Corp., Ltd.Inventor: Ming-Yih Cheng
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Publication number: 20030159485Abstract: A coil spring forming system allows for forming reduced diameter ends at both ends of a coil spring in a single forming process. A rotating member supports one end of the coil spring and preferably includes a die portion that establishes a configuration of that end of the coil spring. A pitch controlling device guides the coil stock longitudinally along the axis of the spring as the rotating member rotates to establish the desired pitch of the coil spring. A moving mandrel member is guided along an axis of the coil spring so that the mandrel member and the pitch controlling member establish the desired diameter of the spring at the corresponding portion of the spring. The mandrel member preferably has a forming surface with a varying outside dimension so that, depending on the placement of the mandrel relative to the coil stock and the pitch controlling member, the diameter of the resulting coil spring can be varied along the length of the spring.Type: ApplicationFiled: February 25, 2002Publication date: August 28, 2003Inventors: Joseph A. Fader, Steven G. Saieg, Steven J. Doyle, Monte G. Williams, Marlon V. Bottene, George N. Lasic, Thomas R. King
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Patent number: 6550301Abstract: The present invention is directed to an inclined helical spring having a plurality of coils along an inclined coil axis. Each coil constituting a part or the whole length of the helical compression spring is increased and decreased in diameter along the longitudinal axis of the spring, and forming the longitudinal axis of the spring in a free state thereof to be inclined substantially at a predetermined angle to an axis to be mounted with the spring. For example, one section of each coil having approximately a half of the circumference of each coil, which is divided by a plane including the coil axis, is increased in diameter, whereas the other one section of approximately a half of the circumference of each coil is decreased in diameter. The inclined helical spring may be mounted on a vehicle suspension.Type: GrantFiled: July 27, 2001Date of Patent: April 22, 2003Assignee: Chuo Hatsujo Kabushiki KaishaInventor: Keiji Hasegawa
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Publication number: 20020194893Abstract: A coil spring forming machine for forming a coil spring having a dimensional characteristic, such as a coil diameter and a coil pitch, includes a frame, a control tool movably mounted on the frame, and a control mechanism mounted on the frame and coupled to the control tool. The control mechanism is operable to move the control tool to vary the dimensional characteristic. The control mechanism includes first and second cam surfaces and a cam follower assembly selectively engageable with either of the first and second cam surfaces to vary the dimensional characteristic depending on which cam surface is engaged.Type: ApplicationFiled: June 20, 2001Publication date: December 26, 2002Applicant: Frank L. Wells CompanyInventors: David Scott Wells, George T. Vattakattu
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Patent number: 6470725Abstract: A method for the production of springs in winding machines provided with one or two winding noses at the winding mandrel of the spring, wherein the or at least one of the winding noses is initially rotated through a given angle such as to create the appropriate stress in the end turn of the spring and subsequently the nose is rotated into one or more angular positions to provide the stress required for the subsequent turns. The spring production machine for carrying out such a method provides angular rotation of the winding nose or noses for winding the wire of the spring, for example levers controlled by a pneumatic or oleodynamic control or an electric motor.Type: GrantFiled: October 13, 2000Date of Patent: October 29, 2002Assignee: Simplex Rapid di Boschiero Corrado e Giancarlo S.r.l.Inventor: Giuseppe Boschiero
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Patent number: 6393888Abstract: In a spring winding device for producing right-hand or left-hand helical springs from wire, with pull-in rollers, a wire guide and two winding apparatuses, each of which has a slide guide body with a slide displaceably arranged therein, every slide guide body is swivelable at its end remote of the wire guide around a swiveling axis directed vertical to the wire guide axis. The two winding apparatuses lie on different sides of the center plane, with a drive for the movement of the slide and a cam drive controlled by a cam disk for swiveling the slide guide body. A shared cam disk with two control portions and at least one rest portion is allocated to the two cam drives. Each control portion serves to introduce controlling movements in one of the two cam drives, while the rest portion, or every rest portion, does not introduce any controlling movements in the cam drive.Type: GrantFiled: April 25, 2000Date of Patent: May 28, 2002Assignee: Wafios AktiengesellschaftInventors: Dietmar Sautter, Karl-Heinz Fritz, Joachim Baerman, Franz Decker
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Patent number: 6378854Abstract: A spring assembly having a coil containing a core and methods and apparatus for manufacturing the same are disclosed. The coil includes a core between reduced portions of the coil. One device for manufacturing the coil includes a coiling machine having an insert device operable with a coiler. The coiler is programmed to form coils of appropriate diameter along the length of the coil, including a diameter sufficiently large to contain the core and two diameters sufficiently small to retain the core in the coil. The insert device transfers the core to the coil after the first small diameter is formed and before the second small diameter is formed. The coil with the core contained between the two small diameters is thereby manufactured in a unified automated process.Type: GrantFiled: August 21, 2001Date of Patent: April 30, 2002Assignee: Precision Products GroupInventors: David A. Meier, Dean A. Pranger, Jerry Lee Wigren, Ken Eugene Simons, Norman Edward Bradshaw, John R. Smith, Russell D. Sugarbaker
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Publication number: 20020046587Abstract: The present invention is directed to a method for producing a helical spring which comprises the steps of providing a plurality of parameters for defining a desired configuration of a target helical spring, setting at least bending positions and twisting positions on the basis of the plurality of parameters, and bending and twisting the element wire at the positions set in response to every predetermined feeding amount of the element wire, to produce the target helical spring. The parameters includes number of coils, coil diameter and lead of the target helical spring. At least the bending positions may be adjusted in response to the cycle of alternating diameters between a local maximum diameter and a local minimum diameter of the target helical spring.Type: ApplicationFiled: October 15, 2001Publication date: April 25, 2002Applicant: Chuo Hatsujo Kabushiki KaishaInventor: Keiji Hasegawa
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Publication number: 20020011090Abstract: The present invention is directed to an inclined helical spring having a plurality of coils along an inclined coil axis. Each coil constituting a part or the whole length of the helical compression spring is increased and decreased in diameter along the longitudinal axis of the spring, and forming the longitudinal axis of the spring in a free state thereof to be inclined substantially at a predetermined angle to an axis to be mounted with the spring. For example, one section of each coil having approximately a half of the circumference of each coil, which is divided by a plane including the coil axis, is increased in diameter, whereas the other one section of approximately a half of the circumference of each coil is decreased in diameter. The inclined helical spring may be mounted on a vehicle suspension.Type: ApplicationFiled: July 27, 2001Publication date: January 31, 2002Applicant: CHUO HATSUJO KABUSHIKI KAISHAInventor: Keiji Hasegawa
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Patent number: 6062054Abstract: A first large drive gear for slider driving mechanisms and a second large drive gear for a tool rotating driving mechanism are disposed coaxially with an axis of a wire feeding quill and in parallel with a rear surface of a front base frame panel, and a single small drive gear and a plurality of small driven gears corresponding to a plurality of wire working units are disposed around each of these large drive gears. A plurality of slider driving mechanisms and at least one tool rotating driving mechanism are operated with a single common servomotor respectively.Type: GrantFiled: February 25, 1998Date of Patent: May 16, 2000Assignee: Asahi-Seiki Manufacturing Co., Ltd.Inventors: Norifumi Abiru, Eiji Obayashi
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Patent number: 6023955Abstract: A device for the manufacture of elastic springs for spring interior mattresses, vehicle cushions, cushions and the like. The springs are constructed from a row of continuous, spiral shaped parts arranged after each other. The device comprises a feeding tool (18) for the spring wire (6), a bending tool (20) for the wire adjustable in a plane essentially perpendicular to the feed direction of the wire, and a spring shaping tool (21), which can consist of two parallel plates between which the wire runs during the manufacturing of the spiral shaped parts of the elastic spring and which are turnable for the adjustment of the slope angle of the spring part. At least one gear transmission (22), which especially can be a planetary transmission, is arranged for the adjustment of the spring shaping tool (21) in predetermined rotational positions.Type: GrantFiled: October 30, 1998Date of Patent: February 15, 2000Assignee: Lema Industrial Ltd.Inventor: Sven Algot Grondahl
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Patent number: 6000265Abstract: A point tool assembly includes a vertical moving table disposed on a forming table and movable in a direction parallel to the forming table surface and perpendicular to the feed direction of a wire, and a longitudinal moving table disposed on the forming table and movable in a direction parallel to the forming table surface and the feed direction of the wire independently of the vertical moving table. A link arm moves a parallel slide table and first and second inclined slide tables the same distance upon longitudinal movement of the longitudinal moving table. A forming table includes first and second independent tool drive units for supporting first and second point tools in positions where the first and second point tools oppose the wire and moving the tools in a direction substantially parallel to the forming table surface and substantially perpendicular to the feed direction of the wire and in a direction parallel to the forming table surface and the feed direction of the wire.Type: GrantFiled: June 8, 1998Date of Patent: December 14, 1999Assignee: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya
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Patent number: 5875664Abstract: A spring forming machine is provided with closed-loop feedback from sensors which monitor dimensions of the coils and heads of the spring being formed, servo motors which control wire feed speed, coil radius and pitch forming elements, and coiling direction. Video cameras form pictorial images of the spring being formed. The images are digitized and fed to a central computer, along with images from similar machines forming similar springs, which compares the signals, such as photometric images, from the different machines, which represent actual spring dimensions, with a single stored image relating to the desired dimensions, such as head shape, coil diameter, and the positions and angles of bends. Discrepancies are correlated with causation data, such as feed roll slippage or material hardness variations, and adjustment signals are sent to the machines. Machines producing errors are interrogated more frequently by the computer. Large errors or failures to respond to adjustments triggers an alarm.Type: GrantFiled: December 23, 1997Date of Patent: March 2, 1999Assignee: L&P Property Management CompanyInventors: Terence A. Scott, Henry G. Mohr
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Patent number: 5875666Abstract: A tool assembly 120 is attached on a forming table 101 movably in a vertical direction with respect to the forming table 101. The tool assembly 120 has a wedge tool assembly 140 which inserts a wedge tool between coils of wire W being continuously rolled by a coiling assembly 160 and growing coils having a predetermined pitch in an approximate normal-line direction with respect to the forming table 101, and a core block 123 which applies a cutting force to the wire W in cooperation with a cutting tool. This integrally moves the core block 123, the wedge tool and the like.Type: GrantFiled: August 6, 1997Date of Patent: March 2, 1999Assignee: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya
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Patent number: 5868996Abstract: The objects are a reliable and economical method of and device for manufacturing helical springs that are curved when unstressed from sections of wire or rod heated to coiling temperature. The spring is coiled straight and then curved it to its final shape. The device consists of a hot-coiling production line comprising a kiln (1), a series of rollers (2), a coiling bench (4), and a quenching tub (6). A tool (5) for curving helical springs (10 or 14) is integrated into the production line between the coiling bench and the quenching tub.Type: GrantFiled: July 28, 1993Date of Patent: February 9, 1999Assignee: Fried. Krupp AG Hoesch-KruppInventors: Hans Vondracek, Heinz Krober
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Patent number: 5791184Abstract: A spring-making machine including a spring wire feeding device having a frame, a driving disk rotatably mounted on the frame, a first sleeve fixedly arranged on one side of the frame and having a plurality of fixing holes, a second sleeve inserted into the first sleeve and fixedly mounted on the driving disk, and an elongated core having a sectorial portion with an angle less than 180 degrees at an end thereof and a opening at another end, the core having an axial hole and a radial outlet, a guide rod having an axial hole adapted to receive a spring wire and having an end inserted into the axial hole of the core, and a clamp having a recess in which is fitted another end of the guide rod and a bolt extending through the clamping means to engage with the guide rod.Type: GrantFiled: September 9, 1996Date of Patent: August 11, 1998Inventor: Chin-Tu Wu
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Patent number: 5732583Abstract: A circular table is provided around a wire forming portion. A plurality of forming tool units are disposed on the surface of this circular table such that they are directed to almost the central position (wire forming portion) of the table. Each forming tool unit is movable along guide grooves formed in the surface of the circular table, and its position can be fixed. Therefore, the entering direction of the forming tool mounted to the distal end of the forming tool unit can be arbitrarily changed. Independent servo motors are respectively mounted to the forming tool units, and they can be driven independently of each other.Type: GrantFiled: November 29, 1995Date of Patent: March 31, 1998Assignee: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya
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Patent number: 5706687Abstract: A spring coiling machine has a rotary feed assembly with a servo motor for driving the feed rolls mounted therein and forming a part thereof. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor operated with three axes of servo control provided for the coiling tool. The auxiliary arbor has a plurality of wire forming positions and is also servo motor controlled.Type: GrantFiled: October 18, 1995Date of Patent: January 13, 1998Assignee: BHS-Torin Inc.Inventors: Colin Welsh, Todd E. Brink
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Patent number: 5660067Abstract: A versatile spring making machine including a processing tool locating unit consisting of a transverse slide moved in the transverse direction and a longitudinal slide moved in the longitudinal direction, a tool assembly moved by the processing tool locating unit to the desired processing position for processing a steel wire into springs, a feeder unit having feeding rollers controlled to feed a steel wire to the tool assembly for processing, a material guiding unit having guiding rollers controlled to deliver a steel wire to the feeder unit, and a straightener unit disposed between the material guiding unit and the feeder unit and controlled to straighten the steel wire from the material guiding unit or to turn it axially.Type: GrantFiled: September 7, 1995Date of Patent: August 26, 1997Inventor: Chen-Nan Liao
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Patent number: 5657657Abstract: A spring coiling machine has a feed assembly with a servo motor for driving the feed rolls. Substantially all tooling including a coiling tool, a pitch tool and an auxiliary arbor are also servo motor operated with three axes of servo control including a "torsion" axis provided for the coiling tool. The auxiliary arbor has a plurality of wire forming positions and is also servo motor controlled. The "torsion" movement for the coiling tool is controlled by a servo motor-cam mechanism for accurate high speed operation with a high frequency of torsion movement of the coiling tool.Type: GrantFiled: November 7, 1995Date of Patent: August 19, 1997Assignee: BHS-Torin Inc.Inventors: Colin Welsh, Todd E. Brink
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Patent number: 5452598Abstract: An automatic spring formation apparatus includes a base on which an upright work table is mounted. A number of linear motion spring formation tools and at least a curved motion spring formation tool are slidably mounted on the front working surface to work on a wire fed through a wire feed passage formed on the work table so as to form a spring by being driven by independent servo motors under the control of a computerized numeric control unit. The linear motion spring formation tools are movable on the front working surface in a linear way along a radial direction pointing out from the wire feed passage while the curved motion spring formation tool is not only linearly movable on the front working surface along a radial direction pointing out from the wire feed passage, but also rotatable about a pivot normal to the working surface so as to move in a combination of linear translation and angular rotation.Type: GrantFiled: July 26, 1993Date of Patent: September 26, 1995Assignee: Minyu Machinery Corp., Ltd.Inventor: Ming-Yih Cheng
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Patent number: 5444905Abstract: An apparatus for forming springs for incorporation into an innerspring mattress is disclosed. The apparatus includes the use of change gears to facilitate the manufacture of a variety of innerspring sizes.Type: GrantFiled: March 14, 1994Date of Patent: August 29, 1995Assignee: Simmons CompanyInventor: Albert R. St. Clair
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Patent number: 5442944Abstract: Disclosed is an auto-feed control mechanism for computerized numerically-controlled spring-forming machines. A gooseneck tool handle is fixedly connected at a middle point to a movable supporting arm and pivotly connected at a rear end to a fixing member, such that the movable supporting arm can be driven by a third motor to downwardly incline the tool handle relative to the fixing member. The fixing member is fixed to a tool-rotating disk which can be driven to rotate by a second motor so that the tool handle fixed thereto can be universally rotated. A first motor has a rotary shaft connected at one outer end to a threaded rotary shaft. The threaded rotary shaft passes through and engages with a threaded ring provided at a side wall of a tool holder such that when the first motor rotates, the threaded rotary shaft is driven to rotate inside the threaded ring and thereby causes the tool holder to move forward or backwarad.Type: GrantFiled: April 11, 1994Date of Patent: August 22, 1995Assignee: Hertong Machinery Ent. Co., Ltd.Inventor: Chin-Pang Lu
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Patent number: 5269165Abstract: A process for making coiled springs by intermittently rotating feed rollers with a wire held therebetween to feed the wire through a wire guide into engagement with a bending die at the outlet of the wire guide, thereby coiling the wire is provided, wherein as a follower of a cam unit moves toward the base circle of a pitch cam by the force of a spring, a pitch tool extends in an extending direction for pitching, and as the follower of the cam unit moves away from the base circle of the pitch cam against the force of the spring, the pitch tool is retracted in a retracting direction, whereby pitching is completed.Type: GrantFiled: October 26, 1992Date of Patent: December 14, 1993Assignee: MEC Machinery Co., Ltd.Inventor: Takeji Matsuoka
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Patent number: 5259226Abstract: A spring manufacturing apparatus has a first mode in which a spring pitch is formed by inserting a wedge tool between coils of a wire material forcibly bent by a point tool, and a second mode in which the spring pitch is formed by pushing the bent wire material in a lateral direction. The first and second modes share the same driving source. The direction in which the wedge tool moves in the first mode and that in which the wire material is pushed in the second mode are substantially at right angles to each other, and therefore driving force in the first mode can be used also in the second mode by mounting on the apparatus a member that converts the direction of motion.Type: GrantFiled: March 10, 1993Date of Patent: November 9, 1993Assignee: Kabushiki Kaisha Itaya Seisaku ShoInventor: Ichiro Itaya