Abstract: The press slide of a hydraulically or mechanically driven precision blanking press is non-positively connected with a crosshead by means of columns. The knife-edged ring cylinder is integrated in the crosshead and the supporting force of the knife-edged ring cylinder is taken up by the slide. During a cutting stroke, there is no relative movement between the knife-edged ring cylinder with piston and the slide. The counter cylinder is located in the lower crosshead of the stand. During a cutting stroke, there is no relative movement between the counter cylinder and the workpiece in the tool. The working force of the main drive is not reduced by the pressing force of the knife-edged ring and counter cylinder.

Abstract: A sleeve-type gas spring for a turret indexing press has an annular piston operably associated with a punch tool to reciprocate therewith and defining in part an annular gas chamber constructed to receive a gas under pressure. As the punch tool and piston are driven to their extended position by a press ram or some such other power device, the volume of the gas chamber decreases thereby increasing the pressure within the gas chamber such that when the ram is retracted, the pressure of the gas acting on the piston displaces the piston and the punch tool to their retracted positions. The force acting to retract the piston and the punch is dependent on the initial pressure of the gas within the gas chamber and the change in volume of the gas chamber as the punch tool and piston are extended.

Abstract: A hole cutter adapted for cutting holes through the sidewalls of medical catheters is fashioned from a hollow tube having a distal cutting end, a proximal ejection end and a lumen of smaller diameter near the cutting end. Slugs formed at the cutting end are extracted by suction applied to the ejection end, and are captured by a filter.

Abstract: A punch includes a mold piece disposed on a plate, and a barrel secured on the plate with an arm. A shaft is slidably received in the barrel and includes a punch rod secured to the bottom end. A lever has one end pivotally coupled to the barrel and has a middle portion secured to the shaft for moving the shaft and thus the punch rod downward to actuate on the mold piece. A housing includes a hub having one or more guide rails extended inward of the hub to engage with the punch rod and to guide the punch rod to move relative to the housing.

Abstract: A punch guide assembly includes a retaining clip for retaining the stripper plate inside the punch guide or allowing removal thereof without disassembly of any of the remaining components of the punch tool. The retaining clip is easily insertable into the punch guide and removable therefrom through an opening in the sidewall of the punch guide without the use of additional tools.

Abstract: There is provided a method comprising a process of lightly fitting a distal end portion of a projecting portion 25 of a blank holder 23 into a fitting groove 19 formed in a punch guide 5 so as to be momentarily held therein; and a process of fitting the projecting portion 25 of the blank holder 23 into the fitting groove 19 while punching a punch guide hole 23G in the blank holder 23 when a punching portion 7 of a punch body 9 of a punch assembly 1 is lowered for pressing the blank holder 23 against a die D so that the punch guide 5 descends.

Abstract: A punch activating apparatus is provided which may be used in connection with a plurality of button-activated punches having different shapes and sizes. The punch activating apparatus comprises a base assembly including a base having an upper surface, and a lever assembly secured to the base assembly. The upper surface of the base defines a target area, and the lever assembly is operable to engage and depress the activating button of any one of the plurality of punches when the punch is positioned at the target area.

Abstract: A hole-punching and binding apparatus for papers includes a hole-punching device drivable to move along a vertical direction. The hole-punching device includes a cutter seat carrying thereon a number of cutters that are equidistantly spaced in a row to punch a row of holes in a stack of papers. Each cutter being freely movable in a row of compartments in the cutter seat so as to optionally follow a hole-punching travel of the cutter seat under control of a slidable shield. A lever-like resilient load-on plate is used to press and thus close open ends of helical coils and to help the user extend the helical coils through a stack of punched papers. The coil-closing device is drivable to move along a horizontal direction. The coil-closing device cooperates with a fixed plate to turn the open ended helical coils into closed ended helical coils.

Abstract: An apparatus for sticking a film to a lead frame has a punch moving up and down for punching a film, a die for placing the film to be punched, and a heating plate for heating a lead frame. A punched film with a predetermined shape is applied on the lead frame and thermally compressed and adhesively attached on a lead portion of the lead frame. The die is additionally provided with a buffer layer on the top plane of the die for relaxing compressing stress but increasing tensile stress put to the film at the punching step so that a punched film is prevented from producing cracks on the cutting end thereof.

Abstract: A hole cutter adapted for cutting holes through the sidewalls of medical catheters is fashioned from a hollow tube having a distal cutting end, a proximal ejection end and a lumen of smaller diameter near the cutting end. Slugs formed at the cutting end are extracted by suction applied to the ejection end, and are captured by a filter.

Abstract: To manufacture orifice disks, polygonal workpieces are prefabricated and oblique holes are punched successively by positioning the polygonal workpieces in different angular positions between lateral stops on an inclined bearing surface of a fixed punch die. The workpiece is removed after punching a hole, arranged in the following angular position and positioned between the lateral stops in order to punch the following hole. The removal and positioning of the workpiece in different angular positions is repeated to provide the required arrangement of punched holes. A device for manufacturing orifice disks includes a punch, lateral stops, and an inclined bearing surface of a fixed die. Accordingly, the series production of orifice disks of multiple-orifice nozzles for fuel-injection engines is accomplished.

Abstract: A floating punch holder is attached by a chuck to a punching apparatus. The floating punch holder has a shank with upper and lower portions. The upper portion of the shank is held by the punching apparatus. The lower portion of the shank holds a punch in vertical alignment. The chuck allows for adjusting, aligning and centering the punch while maintaining the vertical alignment of the punch.

Abstract: The punching blades acts to punch out parts of any desired shape from paper, cardboard, pasteboard, plastics material foils, leather, rubber and the like. In order that an optimum cutting quality can be generated from the start using the punching blade, the punching blade has a cutting edge which comprises a curvature with a radius of from 0.005 to 0.060 mm.

Abstract: The cutting device with movable punch is of the type which has a body placed within a seat (2) which is formed in the structure (3) of the machine, and also a fixed die (4), a movable upright (5) and an elastic element (6). In particular the body is constituted by a punch placed in the central position within the seat (2), a shaped element (8) coaxial with the punch and a blank-holder (9) which is integral with the terminal lower part of the shaped element (8).

Abstract: A table for fixing a workpiece is driven and controlled by a position control means in a CNC unit through servo motors. Approach of a press tool to the workpiece is started by a press operation control means in the CNC unit through a servo motor at the time prior to the time, at which the position control of the table is completed, by predetermined time. Afterward, the press tool is controlled according to operation data stored in a press operation storage means in the CNC unit.

Abstract: A sheet transport apparatus has a puncher for punching a hole in a sheet as the sheet is being transported through a transport path, and a transport device for clamping and transporting the sheet, the transport device being disposed downstream of the puncher and having a first rotation member and a second rotation member for pressing the sheet into contact with the first rotation member, the transport device being disposed at a position where a hole punched by the puncher passes through.

Abstract: The punching and scoring tool produces scored punched parts from a material sheet and has a carrier board, which is provided on its underside with punching elements and a scoring plate, on the underside of which scoring projections are arranged. A punching/scoring plate, in which scoring grooves are formed under the scoring projections, is provided under the carrier board. Leveling bushes are provided in the carrier board and bear against the scoring plate to provide an accurate supporting plane for the scoring plate.

Abstract: A punch, in which two operations, e.g., the movement of a head 1 along a rail 4 and the vertical movement of a punch 32 are carried out by the rotation of a slide transmission shaft 2 is provided, so that the bad influence of the inertia of the head 1 is suppressed, and the high speed operation is realized to thereby enhance the punching operation. The punch of the present invention comprises, a slide transmission shaft 2 to engage with a head 1, a driving member 28 having concentrically a helical cam 281 consisting of a helical portion and a vertical portion on its outer circumference and a punch driving gear, a rack 31 being parallel with the slide transmission shaft 2 and having teeth of the pitch identical with the pitch of the helical cam 281, while being engaged with the rack 31, and a punch driven gear 30 being rotated while being engaged perpendicularly with the punch driving gear 29 and having a pin 361 to be engaged with a rectangular hole 331 of the punch driving member 29.

Abstract: A paper cutter is provided with a stationary blade and a movable blade unit. The movable blade unit is provided with a circular blade for cutting a rounded corner of a sheet of paper and a corner cutter blade for cutting the corner edge of the sheet of paper. The movable blade unit is inserted in a movable blade inserting hole provided in the stationary blade, the corner of the paper is inserted in a slit cut in the stationary blade which intersects with the movable blade inserting hole. During the cutting of the corner by the circular blade, the corner of the paper is tensioned between the circular blade and the corner cutter blade. As a result, the paper is cleanly and uniformly cut and the force required to cut the paper is decreased as compared to conventional paper cutters.

Abstract: A film re-shaping device for orienting and re-shaping the end of a filmstrip in a desired configuration having, a base, an alignment post mounted on the base, an elongated metal lower die plate with an guide hole for positioning the die plate over the alignment post, formed in the desired end-of-filmstrip configuration, a film guide mounted on the die plate for aligning an edge of the filmstrip, a film edge spring for keeping the filmstrip against the film guide, a spring loaded roller attached to the base for bearing on the filmstrip and flattening the filmstrip against the die plate surface, and an elongated metal upper punch plate having an guide hole for positioning the punch plate over the alignment post and aligning the plates accurately with each other, formed at the film re-shaping end in the desired end-of-filmstrip configuration, whereby the filmstrip is captured between the upper and lower plates, is described.

Abstract: A method of cutting, slicing or perforating photographic imaging elements using certain cutting tools is disclosed. The cutting tool material includes zirconia and yttria at a molar ratio of yttria to zirconia from about 0.5:99.5 to about 5:95. The cutting tool is essentially a tetragonal crystal phase grain for the interior in a surface of cubic crystal phase grain or monoclinic crystal phase grain. This provides a hard, tough outer surface with a tough core. The cutting tool material can also be a composite of zirconia-alumina with or without surface modification.

Abstract: A two-piece punch for use in a punch press to form holes in a workpiece. The punch includes a shank portion to be retained in a punch press, a two-piece cutter element consisting of a socket member attached to the shank portion, the socket member having a socket bore with an open end, and a cutter insert for insertion in the open end of the socket bore to be seated therein, the cutter insert having a cutting end projecting outwardly from the socket member when the cutter is seated in the socket bore, and a cutting edge on the cutting end. The punch also has a retainer for retaining the cutter insert in the socket bore. The cutter insert is preferably formed of a substantially cylindrical annular member, and the cutting edge is an outer bevel formed on the outer circumference of the cutter insert at its cutting end. An inwardly extending annular shoulder at the cutting end forms a reinforced throat for the cutting edge.

Abstract: The present invention relates to a method and apparatus for producing a laminated product in which the deformation of a base element and the squeeze-out of a viscoelastic element from the periphery of the base element can be eliminated.

Abstract: The disclosed punching unit transforms the vertical motion of a press into a horizontal punching motion by means of two wedges inside the unit body, the down motion of the upper wedge determining the horizontal displacement of the lower wedge, the unit being provided with a return mechanism and with a locking sensor for stopping the unit. It has gas dampers or metal springs, and in one embodiment, the unit is mounted on a base plate which is larger than the plant, and which is aligned with the clamping plate, thereby providing anti-rotation in collaboration with the internal anti-rotation structure.

Abstract: Dies are used in forming a pack of self-opening plastic T-shirt bags for use with a bagging rack. Each plastic bag in the pack of bags has a mouth tab portion between its two upwardly extending handles, which are at the sides of the mouth of the T-shirt bags. The mouth tab portion is located on the front and rear walls in the mouth region of the plastic bags. The mouth tab portion has an aperture for receiving a retaining projection of a bagging rack. Frangible pressure bonding is formed along the perimeter of the mouth tab aperture. Flapless handle apertures are also formed in the handles, with frangible pressure bonds formed along their perimeter edges. Due to the frangible bonding formed between adjacent bags, as a frontmost bag is removed from the pack of bags on the bagging rack, the next bag in the pack of bags will automatically self-open into a open position for loading with merchandise.

Abstract: A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.

Abstract: The invention is directed to an improved method and apparatus for a forward extrusion piercing which is able to pierce a long through-hole of slenderness (length/hole diameter) 5 or the like in a hot blank with a high accuracy by one stroke of the piercing punch so as to produce hollow metallic products. In the process, a hot blank forged with a determined outer shape is set on a lower die, and an upper die assembly is provided with the piercing punch, a holding guide and an upper die coaxially with the lower die. Downward movement of the upper die assembly enables the holding guide to hold the blank and then the punch moves down with a retention by a through-hole of the holding guide through which the punch passes, against transverse displacement of the punch. The tip of the punch is adapted to enter a through-hole of a receiver die at its lower stroke end in order to cut off redundant piece of the blank.

Abstract: A pog press which utilizes a base and a lid with the lid being movable relative to the base. Mounted within the base is a pog receiving pocket with a pog pocket being mounted within the lid. The pog pocket and the pog receiving chamber are to interconnect when the lid is closed on the base. A sheet material pattern is to be connectable with the pog pocket and when the lid is closed on the base, a cutting blade severs the sheet material pattern with the severed segment to then conform to the shape of the pog pocket. The lid includes a transparent window over the transparent pocket to permit visualization of the interior of the pog receiving chamber when the lid is in the closed position with the base.

Abstract: In a follow-up slotting tool for continuously punching workpiece (W) fed between a punch (3) and a die unit (5) at a predetermined pitch, the punch (3) is formed with a shear angle (.alpha.) at a lower end surface thereof in such a way that a front end of the punch is cut into the workpiece but a rear end thereof is not cut into the workpiece when lowered at a predetermined downward stroke; and the die unit (5) is provided with a counter member (15) for raising a residue (W.sub.A) partially cut away from the workpiece, after the punch has been lowered at the predetermined downward stroke, and with a cutting edge (21) for cutting off the partially cutaway residue (W.sub.A) raised by the counter member in cooperation with the punch, when the punch is lowered at the succeeding predetermined downward stroke.

Abstract: Invention discloses a heated die to form long lived aperatures in upper region of plastic wrapped packages; said die featuring improved construction providing focused unidirectional heat flow to avoid package failure leading to product deterioration and package failure and disengagement with display hangers; said heat control effected by micro control of flow of energizing electricity.

Abstract: A "green" sheet manufacturing method and apparatus contemplates perforating the "green" sheet with through-holes as it is calendared, rolled or extruded by rollers. To this end, the rollers are each machined with punches of a length one-half the thickness of the "green" sheet and that mate with punches on the other. Any flash or diaphragm obtaining in the through-holes are removed by subsequently exposing the "green" sheet to new mechanisms providing fluid pressure or vibration, or spiking. The bosses or punches may be supplemented with enlargements and other bosses providing for pads and counterholes and grooves in the "green" sheet. The through-holes may be shaped to have a smaller diameter interiorly than at the outer edges to lock in place solder or other conductive media squeegeed into them. The locking action may be enhanced by slightly off-setting bosses or mating punches to produce through-holes whose top and bottom halves are slightly off-set.

Abstract: The low noise punch tool (17) of this invention includes an upper surface pad (51) formed of a low noise material and disposed on an upper surface of a punch head (37) to be struck by a striker (25) of a punch press. Further, an elastic member (55) formed of a low noise material is interposed between the punch head (37) and a punch guide (43), and a ring (53) formed of a low noise material is interposed between the punch body (39, 41) and the punch guide (43). The low noise punch tool (17) includes a lower surface pad (63) formed of a low noise material and attached to a lower surface of a stripper plate (45) provided at a lower end of the punch guide (43). The low noise material may be urethane. Yet further, the cutting edge (41a) provided at the lower end of the punch body (41) has preferably a shearing angle. This punch tool is advantageous in that the noises of the punch tool during punching is significantly reduced, and the structure thereof is simple.

Abstract: A strip steel punching and indenting tool (15) and a method for preparing this type of tool wherein the tool, arranged between a ram (12) and an anvil (14) of a punching machine (10), comprises a supporting plate (16) with slots (18) extending from the lower side of the supporting plate facing the anvil (14) to its upper side facing the ram (12). Each of the slots (18) accommodates a cutter of strip steel for punching (20a, 20b) and indenting (20c), in such a way that the hardened cutting edge (22) of a cutter protrudes from the lower side of the supporting plate (16) and the rounded non-cutting backs (24) thereof face a first intermediate plate (26) of metal mounted on the upper side of the supporting plate. To be able to prepare the punching and indenting tool within a short period of time without impairing the punching performance of the punching machine, the first intermediate plate (26) is between 0.8 and 1.5 mm thick, consists of a metal with a 0.2-tensile yield strength R.sub.p0.2 of 20 to 90 N/mm.sup.

Abstract: A vote recording device utilizes a punch to form machine readable holes at preselected locations in a non-scored paper ballot card. A stationary top mask with an array of spaced punch access apertures and a metal anvil plate with an array of spaced die apertures are secured within a housing in spaced parallel relation with the apertures in axial alignment. A lockout template having an array of spaced punch receiving apertures is received for sliding movement between the top mask and the anvil plate. The lockout template is biased to a position where the punch receiving apertures on the lockout template are out of alignment with the punch access apertures in the upper mask. A ballot card is inserted between the lockout template and the anvil plate, causing the lockout template to slide to a position in which the punch receiving apertures of the lockout template are in alignment with the punch access apertures in the upper mask and the die apertures in the anvil plate.

Abstract: A punch is disclosed, which can be used with an automatic paper feeder or a plane paper copier for receiving sheet-like members one by one from such machine and forming punched holes in each sheet-like member at a punching position thereof. A punching member is disposed in correspondence to the punching position for effecting punching with a predetermined stroke. A dimensional strain generated in an electrical-to-mechanical conversion element such as a piezoelectric element or a magnetostriction element is transmitted after enlargement by an enlarging member disposed to surround the element through a movable output terminal and an operation transmission lever to the punching member to cause high speed operation thereof in a predetermined stroke range. High quality punched holes free from curved edges or the like difficiency thus can be formed even in a continuous feed state without holding the sheet-like members stationary for a while.

Abstract: A blanking cutter cuts out a dumbbell-shaped test piece from a sheet of rubber, plastic, vinyl, polyethylene, paper, or the like. The dumbbell-shaped test piece has wider opposite ends and a narrower intermediate strip portion joined thereto along curves. The blanking cutter has a base, a plurality of flexible shearing blades, and a plurality of presser plates which clamp the shearing blades against the sides of the base. The shearing blades fully surround the outer profile of the base and have respective cutting edges projecting beyond the base and the presser plates.

Abstract: A punch has a punch tip with a shank and a punch pad with an orifice for receiving the shank. The punch pad includes a hole positioned closely adjacent the orifice to define a thin wall between the hole and the orifice. The thin wall has a slot which extends through its thickness to define at least one, and preferably two, tabs. An insert, which may be a pin, is provided for insertion into the hole and deforming the tab into supportive, retaining contact with the shank of the punch tip within the orifice. The shank of the punch tip may be provided with a shoulder for abutting the inwardly deformed tab or tabs to restrain withdrawal of the punch tip from the punch pad during operation.

Abstract: A three-piece, die punch has an upper body fixed in the die, a changeable quill, and a lower body to hold the changeable quill in the die punch.

Abstract: In accordance with the present invention, a punching assembly is provided. The punch assembly preferably includes a casing or sleeve in which a punch is mounted for longitudinal sliding movement. In accordance with one feature of the invention, a stripper plate is provided adjacent the operating end of the punch. The stripper plate includes a central opening for the punch that surrounds and guides its cutting end. A retaining means is preferably provided to cover a portion of the stripper plate at times to keep the stripper within the assembly until it is to be released.

Abstract: A heavy duty punch for piercing armor plate and the like has a shank by which the punch may be held when in use and a piercing end projecting axially from the shank. The piercing end terminates in a sharp-edged tip. The tip is connected to the shank by a reduced-diameter portion defined by a curved sidewall extending axially from the tip toward the shank and a straight-sided sidewall extending axially from the curved sidewall toward the shank. The straight-sided sidewall is spaced from the tip a distance slightly greater than the thickness of the workpiece being punched; the diameter of the straight-sided sidewall is slightly less than the diameter of the tip.

Abstract: A punch press having a die formed with a diehole and mounted on a die holder and a punch set provided with a punch mounted on a punch holder for performing a punching process on a workpiece in cooperation with the die. The punch set is formed with a fluid discharge orifice for discharging a fluid into the diehole, and the punch is formed with a communication orifice communicating with the fluid discharge orifice. A ram for striking the punch is formed with a fluid supply orifice for freely communicating with the communicating orifice. A connecting pipe connects the fluid supply orifice with a fluid source; a shut-off valve is provided for opening or shutting of the connecting pipe, with a stroke position detector for detecting the stroke of the ram. A shut-off valve control is provided for controlling the opening or shutting of the shut-off valve according to the values detected by the stroke position detector.

Abstract: A punch knife is formed by a steel band which is provided with a hardened cutting edge and at least one array of perforations and/or a tempered or porous strip of material extending in parallel with the cutting edge.

Abstract: The punch press with a control mechanism for the displacement of a punch tool carriage and a punch tool mounted therein comprises a machine frame, a punch tool carriage movable up and down in the machine frame, a die-bearing member having a workpiece receiving portion mounted on the machine frame positioned opposite the punch tool carriage, a stripper on the machine frame adjustable in height for different workpiece thicknesses and a control mechanism having a plurality of controlling element pairs including a plurality of control cams and associated control switches.

Abstract: Improved composite tools, such as punches and dies, which tools have very high and abrasion resistant working surfaces. The composite tool includes a relatively soft support, such as a tool steel body, and a relatively hard working portion, such as a carbide, which is firmly mounted within the support in such a manner that axial and radial shocks are dampened.

Abstract: A punch pin cutting edge configuration having a leading edge and a following edge is described. The leading edge engages a workpiece, such as paper, before the following edge. The following edge is at a steeper angle than the leading edge relative to the workpiece being punched. The cutting edge thus produced reduces the force necessary to punch through the workpiece.

Abstract: An apparatus for punching a plurality of predetermined spaced mounting holes in a building roof panel support member includes an elongated housing having an oil sump therewithin, a hydraulic pump together with an electric motor for actuation thereof mounted on the housing, guide structure which can be opened and closed for temporarily mounting the housing upon a roof panel support member, an adjustable gauge pin mounted on the housing near one end thereof, the gauge pin being supported on a mount which is adjustable along both the length and the width of the housing, and a hydraulic punch adjustably mounted near the other end of the housing from the gauge pin for punching holes in the support member.The method of punching holes in a roof panel support member as disclosed herein is also part of this invention.

Abstract: A punching tool wherein the knife is a strip of steel and has a cutting edge flanked by two mutually inclined concave facets. The facets are disposed between the cutting edge and two lateral surfaces which have concave portions adjacent the respective facets. Those portions of the knife which are disposed between the facets and the concave portions of the respective lateral surfaces are rounded.

Abstract: A self-sharpening hole punch for plastic bags includes a pneumatically operated punching apparatus for punching wicket pin receiving holes in a flexible film or plastic bag. If desired, a tear slit may be simultaneously formed to enable the bag to be quickly and readily torn free from the wicket pin upon which the bag is retained. A pneumatic air cylinder has a cylinder rod with a fitting affixed thereto, the fitting having an internal tapered thread. Interchangeable plastic cutting tools, having a complementary tapered thread, may be interchangeably screwed into the fitting to facilitate replacement as necessary. A resiliently compressible cylinder of foam plastic material is disposed in a circular void at the cutting side of each of the plastic cutting tools to expel the waste film discs that are punched out of the film or plastic bag material.

Abstract: A self-sharpening hole punch for plastic bags includes a pneumatically operated punching apparatus for punching wicket pin receiving holes in a flexible film or plastic bag. If desired, a tear slit may be simultaneously formed to enable the bag to be quickly and readily torn free from the wicket pin upon which the bag is retained. The disclosed embodiment utilizes a pneumatic air cylinder having a free end of the cylinder rod having a fitting secured thereto having an internal tapered bore. Interchangeable plastic cutting tools, having a complementary tapered thread, may be interchangeably threaded into the fitting to facilitate replacement as necessary.

Abstract: A method for punching an insulating film is composed of using plural divided punches having a clearance between each two of the divided punches. The clearance absorbs thermal expansion of the divided punches caused by receiving a heat from a heater. A punched insulating film is stuck to a lead frame by being pressed between the divided punches and the heater.