Abstract: A mold mounting plate for an injection molding machine for processing material, in particular plastic material, includes a main body having a plate-shaped central portion. Received in the main body are plural sleeves which define openings for support of column-like holding and/or guiding elements of the injection molding machine, and are secured to the central portion such as to establish a flexible bending/torsion joint. In this way, a transmission of moments onto the column-like holding and/or guiding elements as a result of a deformation of the mold mounting plate is minimized.

Abstract: The mold opening speed is increase by upward moving a movable plate of a vertical clamping device for an injection blow molding machine by hydraulic cylinders at the both sides instead of a booster ram.

Abstract: An injection molding apparatus used comprises a molten resin injector 15 for injecting a molten resin, and a die 12 connected to the molten resin injector and communicating with the molten resin injector so that the molten resin is injected into the die. A cavity having a prescribed shape is formed within the die in order to mold the injected molten resin into the prescribed shape. An opening of the die for guiding the molten resin to the outside is blocked so as to confine a molding object as an object for molding the resin member. A plate member 10 as a molding object is compressed onto the die 12, and the molten resin is injected into the die while compressing the molding object. The molten resin is adhered on the molding object by being guided from the opening, and a solidified resin member comprising the solidified molten resin is bonded on the surface of the molding object. Consequently, the resin member having a prescribed shape is readily and promptly formed on the surface of the molding object.

Abstract: A molding machine includes a mold space between two mold carriers. One of the two mold carriers is movable relative to the other by a drive. A separate power unit generates a predetermined closing force between the two mold carriers when the two mold carriers are moved together. The separate power unit comprises, for its actuation, a pressure cushion filled with a composition that is highly viscous by comparison with hydraulic oil.

Abstract: Mould assembly (1) consisting of two interacting mould sections (2, 3). One mould section is provided with a seat (4) and the other mould section with a body (5, 6) that is accurately accommodated by said seat (4), the body/seat interaction having a centring effect. The seat (4) is delimited by a series of ridge-shaped elements (8) that arm arranged according to an annular shape. The rigidity thereof in the radial direction is greater than that in the axial direction.

Abstract: The invention relates to a linear drive device for opening and closing molding tools and for applying a clamping force thereon, especially mold halves of a plastics molding machine. The device is comprised of a screw drive acting upon the molding tool, a first screw nut for opening and closing the molding tools and a piston/cylinder unit for applying a clamping force. In order to provide a linear drive device for opening and closing molding tools, especially mold halves of a plastics molding machine, which enables fast opening and closing of the molding tools and energy-optimized application of the clamping force to the molding tools, the piston/cylinder unit (113) acts upon the molding tool by means of a second screw nut (108).

Abstract: A stack mold support has a clamping assembly fixed to a support frame. The clamping assembly has a plurality of clamps fixed to a first member and a plurality of clamps fixed to a second member. The plurality of clamps are slideable along the first and second members to releasably engage a stack mold. The stack mold support is disposed adjacent the stack mold in order to support the stack mold from above or below the stack mold within an injection molding press. When supported from above, the stack mold hangs from the stack mold support within the injection molding press.

Abstract: There is provided an electric split nut opening/closing device in which an electric motor is driven, and a half piece is moved linearly while the motion is restrained unequivocally, by which two left and right tie bars can be opened and closed at the same time by one device.

Abstract: An injection molding machine 10 utilizes a two part mold to produce a molded part. A machine includes a clamping mechanism 20 including one or more clamping cylinders 22 for applying a mold clamping force to the two part mold, an injection mechanism 30 for plasticizing material and injecting the plasticized material into the closed mold, and a controller 50 for powering the molding machine hydraulic system 52. In one embodiment, clamping pressure is automatically increased or decreased to allow air to escape as plasticized material flows into the mold cavity. In another embodiment, the controller provides a minimum clamp pressure to maintain the plasticized material within the mold as a function of fluid injection pressure to the screw member of the injection system.

Abstract: An injection molding machine with a vertically operating clamp mechanism is provided with a pair of locking devices on the upper movable platen to lock the locking rods for high tonnage clamping forces. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always “on” arrangement. A power on actuator is provided to release the locking device for raising and lowering the movable platen. A vertical ladder frame is provided for guiding the movable platen when it is raised or lowered. Additionally, a lift mechanism is provided for a rotary table carrying the lower mold halves.

Abstract: Disclosed is an injection molding apparatus that includes an extruder configured to produce a continuous flow of molten plastic. The injection molding apparatus also includes a plurality of mold assemblies and a delivery system that provides an uninterrupted transfer of the continuous flow of molten plastic from the extruder to the plurality of mold assemblies. The present invention also includes an process for using the injection molding apparatus that includes forcing a continuous flow of molten plastic into a delivery system and sequentially routing the continuous flow of molten plastic from the delivery system into a plurality of mold assemblies without interruption.

Abstract: In a mold-closing unit a device for variably fixing the spacing between the stationary mold carrier and moveable mold carrier is provided, which device comes into operational connection with a guide element to fix a set spacing. Associated with the moveable mold carrier is a fixing device which, on actuation, fixes the moveable mold carrier in its respective position. The drive for moving the moveable mold carrier itself alters the spacing along a portion of the guide element when the fixing device is actuated and the clamping device is not operationally connected. Drive has at least two parts which are operationally connected with one another, of which one part is supported on a support element and the other part is connected to the moveable mold carrier. One of the two parts of the drive also extends in linear fashion in the closing direction during the closing movement as a linear movement means for the moveable mold carrier.

Abstract: A mold positioning system (10) for use in guiding and aligning mold segments (11, 13) includes a male member (12) having a tongue portion (14) on one mold segment that engages a female member (20) attached to the other mold segment when the mold assembly (8) is closed. The female and/or male member (20, 12) are configured to receive a replaceable insert (36) in the areas of the mold positioning system (10) that are subject to wear. The replaceable insert (36) is easily removable for replacement to increase the life of the male and female members (12, 20).

Abstract: A peak current value of a mold clamping servomotor driving a toggle type mold clamping apparatus during mold clamping is proportioned to a mold clamping force. A peak current value is obtained every predetermined number of molding cycles during automatic operation and a difference between the obtained peak current value and a reference peak current value is obtained. An amount of change in a mold clamping force and an adjustment amount of a rear platen are determined according to the difference. The rear platen is moved on the basis of the adjustment amount and control is made so as to attain a set mold clamping force.

Abstract: The invention relates to a clamping device for an injection molding machine for plastics, including a fixed platen (11) which is connected to a moving platen (12) by means of a toggle mechanism (13). A hollow-shaft motor (7) is provided to cooperate with a spindle (21) for operating the toggle mechanism, wherein the hollow-shaft motor (7) is connected to the toggle mechanism (13). According to the invention, the spindle (21) is arranged in a rotationally fixed manner, the end of the spindle (21), facing the moving platen (12), is in engagement with the rotor (6) of the hollow-shaft motor (7), and the stator (4) of the hollow-shaft motor is connected with the toggle mechanism (13). Preferably, a spindle nut is fixed in the rotor (6) for engagement with the spindle (21), preferably in the form of a recirculating ball screw.

Abstract: A clamping mechanism for a clamping unit of an injection molding machine includes a drive unit which moves a first platen linearly relative to a fixed second platen and is linked to the first platen for limited movement. A force-application unit builds up a clamping force, when the first platen assumes a closing position. Disposed between the force application unit and the first platen is a locking device which transmits the clamping force and includes a screw mechanism which operates in synchronism with the drive unit and has a screw shaft and a locking nut constructed to normally connect with clearance to the screw shaft via a thread connection and to interact with the screw shaft for transmitting a load, when the clamping force is applied, whereby the threaded connection is forced to self-lock to secure the locking nut on the screw shaft and prevent reverse rotation of the locking nut.

Abstract: A hydraulic press apparatus comprises: a lower plate and an upper plate adapted to be driven toward the lower plate via operation of a motion a position control device; a hollow cylinder under the lower plate, the hollow cylinder having an upper edge tightly engaged with a lower surface of the lower plate; a guide column connected to the upper plate, the guide column having a lower end portion that defines a rod for a first piston adapted to slide within the hollow cylinder, and the guide column defining an inner cylindrical cavity that extends through the first piston, with the inner cylindrical cavity being filled with hydraulic fluid; a hole extending through the lower plate, the hole being adapted to slidably accommodate said guide column; an aperture in a side surface of the hollow cylinder, the aperture allowing a volume defined between the lower plate and the first piston to communicate with a hydraulic device that is adapted to apply a hydraulic pressure within the volume when the first piston is in a

Abstract: The invention relates to a clamping device for an injection molding machine for plastics, including a fixed platen (11) and an end platen (19) which is connected to a moving platen (12) by means of toggle mechanism (13). A hollow-shaft motor (7) cooperates with a spindle (21) and is arranged between the end platen (19) and the moving platen for operating the toggle mechanism. According to the invention, one or more carrier arms (23, 24) are arranged laterally to and/or beneath the hollow-shaft motor (7) for movable support of the hollow-shaft motor.

Abstract: In a single-component or a multi-component injection molding machine with a nozzle-side clamping plate firmly connected to a machine bed and a closing-side clamping plate supported on the machine bed so as to be movable thereon relative to the nozzle-side clamping plate, and each clamping plate carries a mold half of an injection-molding tool, the mold half or a part of the mold half on the closing-side clamping plate is rotatable about an axis of rotation extending in closing direction and is axially movable along the axis of rotation. In the closing-side clamping plate, a motor is received and which a rotatable shaft extends through the motor and is rotatable by the motor for rotating the mold half connected to the closing side clamping plate.

Abstract: The invention relates to a clamping device for an injection molding machine for plastics, including a fixed platen (11) and an end platen (19) which is connected to a moving platen (12) by means of toggle mechanism (13), wherein a hollow-shaft motor (7) with a stator (4) and a rotor (6) interacts with a spindle (21) for operating the toggle mechanism (13). It is proposed that the hollow-shaft motor (7) can be received in a recess of the end platen (19). Moreover, it is proposed that the spindle nut (5, 23) can be received in the inner dimensions of the rotor (6) of the hollow-shaft motor (7).

Abstract: A guide member having guide faces is mounted on a base frame of an injection molding machine. Adjusting mechanisms are fixed to a platen. The inclination of a moving platen with respect to a stationary platen in a horizontal direction is adjusted by adjusting the projection amount of a member disposed in the adjusting mechanism in abutment against the guide face toward the guide face.

Abstract: A clamping device for injection-molding machine includes a high-speed screw rod unit having a nut element screwed thereto and a movable mold holder connected to a front end thereof, a clamping screw rod unit screwed to a rear end of the nut element and connected to a transmission assembly, a pre-pressing unit adjustably tightened to the clamping screw rod unit for the latter to generate a pre-pressure against the nut element, and a braking unit adapted to brake the nut element. When the nut element is not braked, the high-speed screw rod unit is driven by the transmission assembly to move forward at high speed for closing mold. And, when the nut element is braked and the clamping screw rod unit is driven by the transmission assembly to rotate relative to the nut element, the nut element is linearly pushed forward to generate a high-pressure clamping force during closing mold.

Abstract: The invention relates to a process and a production installation for producing shell-shaped, fibre-reinforced plastic parts. According to the invention, it is intended that the plastic parts can be produced efficiently, in an automated manner which is flexible with respect to the process and workpiece and is operationally reliable. For this purpose, the following process steps are provided: a blank of the endless fibre mat corresponding to a workpiece is placed in an automated manner by industrial robots onto a clamping frame surrounding the female mould and is taken over by the clamping frame in a clamping manner and in such a way that it can slide after itself against a defined resistance. Wide-ranging accessibility required for this is created by a horizontally movable unit, comprising a female mould and a clamping frame, being temporarily moved completely out from the forming press and moved back again into the forming press after completion of loading.

Abstract: A mold clamping device suitable for use in a small injection molding machine and manufacturable with low cost in which a sufficient clamping force is obtained by small number of parts. A link mechanism having a first link member and a second link member is provided between a rear platen and a movable platen. One end and the other end of the first link member are pivotally connected to the movable platen and the second link member, respectively. The second member is connected to the rear platen to be linearly movable with one end slidable along a linear guide provided at the rear platen. A stationary member of a linear motor is arranged at the rear platen and a movable member of the linear motor is provided at the second link member to surround the stationary member. The second link member is linearly moved by the linear motor to expand and fold the link mechanism so that mold halves attached to the stationary platen and the movable platen, respectively are closed to be clamped and opened to be unclamped.

Abstract: This invention consists of a new cost effective injection molding apparatus for molding with hot melt adhesives and other Polyamide materials. Manufactured from standard tubing components in a double “L” or “C” design, it has fewer moving parts than other molding machines therefore requiring less maintenance. It is specifically designed to not require the use of temperature limiting and maintenance prone heated hoses for transport of melted material or sliding injection nozzles for engagement into mold-set by utilizing a substantially fixed injection nozzle. It incorporates a self-draining melt reservoir with single-side mounting to allow for heat expansion and has very short material transfer distance from reservoir to mold-set. It can utilize permanent nozzle engagement into the mold-set to simplify molding operation and reduce cost. It incorporates several safety features to protect operators against injuries.

Abstract: An adaptation device and method for molding a dental material to a die in the preparation of a dental coping with the die having the shape of a tooth to be restored and with said dental material placed over said die. The adaptation device includes a base for placement of the die, a cover mounted on the base over the die to form an enclosed chamber, an inlet opening extending through the cover into communication with the chamber, a source of a gaseous fluid connected to the inlet opening for pressurizing the chamber, an outlet opening extending through the base in proximity to said die and diaphragm means removably positioned in the chamber to surround the die and to isolate the outlet opening from the chamber such that upon pressurizing the chamber the diaphragm is caused to collapse about the die and to apply a uniform pressure over the dental material for adapting the dental material to the die.

Abstract: A hybrid power supply type injection molding machine system has a motor-driven injection molding machine body including an injection mechanism and a mold clamping mechanism that are driven by servo-motors; a control device giving a command to said servo-motors to drive said injection mechanism and said mold clamping mechanism in accordance with predetermined program commands; and an electric power supply device for supplying said motor-driven injection molding machine body through said control device with the electric power required for operating said motor-driven injection molding machine body, said electric power supply device including: a first electric power supply unit for supplying the electric power from a commercial power source; a second electric power supply unit having an electric power accumulation unit dedicated to said motor-driven injection molding machine; an electric power comparator for comparing outputs of said first and second electric power supply units; and a switching device for switchi

Abstract: An injection moulding machine (1) comprising a fixed mould half (4) mounted on a fixed plate (3) integral with the machine frame (2) and a moveable mould half (9) mounted on a moveable plate (8) supported in translation on the machine frame (2) and guided along guide columns (5) integral with the fixed plate (3), to pass from a mould closing position to a mould opening position, and a closing and clamping system (10) comprising clamping means, integral with the moveable plate (8) and acting on a portion of the guide columns (5) to lock the moveable plate (8) in the closing position.

Abstract: A clamping apparatus 30 has a driving plate 31 provided with a securing device 40 for securing tie rods 13 in a predetermined position in the axial direction, and a clamping drive device 50 for pressing a movable platen 12. The driving plate 31 is guided by guide bars 15, secured to the movable platen 12, in the axial direction. Rear parts of the guide bars 15 are secured to an adjusting plate 32 which is provided with a positioning means 60 for adjusting and holding a distance S between the driving plate 31 and the movable platen 12.

Abstract: The clamping comprises a tie-bar which extends between a fixed and a movable platen of a molding machine, with respect to the first, and hydraulically operated locking means for engaging the tie bar and generating the clamping force. The locking means comprises a hydraulic cylinder having a hollow sleeve and piston provided with internal toothings, in axially spaced apart positions. The sleeve and piston unit is made to rotate and slide axially, to selectively engage and disengage with the toothed head at the end of the tie bar to allow step and fine adjustments of the position of the movable platen, in relation to the thickness of the mold.

Abstract: A latching device (20) for a mold assembly (10) uses a cam action to hold the “A” side plate against the hot runner system/nozzle plate (18) during operation. Preferably, a latch (20) is provided on each side of the mold to effectively hold the “A” side plate against the nozzle plate (18) during the high pressure injection of plastic melt. For purposes of a mold insert change, each latch (20) is rotated to release the “A” side plate from the nozzle plate (18), and hold the “A” side plate against the “B” side plate. This enables the “A” (12) and “B” (14) portions of the mold assembly to be moved away from the nozzle plate (18), thereby avoiding interference of the hot runner nozzles and “A” side insert and enabling quick mold insert change.

Abstract: A mold interlocking device that includes a first portion attached to a mold half that has a head with a channel and an insert therein that is received in a pocket of a receptacle of a second portion that is attached to another mold half. In one embodiment, the head comprises sidewalls each with channels that receive a replaceable insert therein. Preferred inserts include rollers, plates, plates with lubricating plugs, and plates comprised of layers. In one embodiment, each sidewall of the head has a tapered section disposed between a mounting base and a straight section and each pocket is defined by a complementarily contoured sidewall. In another embodiment, each head sidewall further includes a second tapered section adjacent the free end of the head.

Abstract: An injection mold apparatus is configured with one or more secondary mold locks and matched shear parting lines to prevent relative movement of individual mold elements parallel to, and normal to a mold opening and closing axis. The secondary mold locks operate conjunction with a primary mold clamping unit to secure the injection mold in a closed configuration against movement parallel to a mold opening and closing axis. The matched shear parting lines are orientated at an angle relative to the mold opening and closing axis, defining contact surfaces which secure the injection mold elements against relative movement normal to the mold opening and closing axis.

Abstract: An injection molding machine with a vertically operating clamp mechanism is provided with a pair of locking devices on the upper movable platen to lock the locking rods for high tonnage clamping forces. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always “on” arrangement. A power on actuator is provided to release the locking device for raising and lowering the movable platen. A vertical ladder frame is provided for guiding the movable platen when it is raised or lowered. Additionally, a lift mechanism is provided for a rotary table carrying the lower mold halves.

Abstract: An elongate threaded rod member comprises a central portion, and two oppositely extending outer portions. The central portion is attached to the periphery of the first plate, is rotatable with respect to the first plate and is prevented from axial movement relative thereto. Each outer portion includes a threaded portion with each having the same threading pitch and density but being in opposite orientation. A threaded connector is secured to the periphery of each second plate with each threaded portion in screw-threaded relation. The threaded portions rotate within each bore an equal an opposite amount, equalizing the distances of each second mold plate from the first mold plate as the apparatus is moved between open and closed positions.

Abstract: Method for mold clamping of the present invention is capable of shortening a molding cycle without any initial setting works for an engaging position of a tie bars. The method is constituted the steps of moving the tie bars in the direction of mold closing during mold close operation, judging a relative moving speed between a movable die plate and the tie bar to be within a predetermined value, engaging the tie bars with the movable die plate mechanically by operating an engaging means when the relative moving speed is judged to be within the value, then further moving the movable die plate against a fixed die plate under engagement, and after contact of a movable mold with a fixed mold driving a mold clamping cylinder, thereby executing mold clamping operation.

Abstract: Means for advancing and retreating a movable die plate 9 toward and from a fixed die plate 5 includes a moving base 17 in which the upper surface thereof is connected integrally with the movable die plate 9 and a slide unit 21 is installed on the lower surface thereof; a pair of track rails 23 which are provided on the base 1 and form a linear guide by engaging with the slide unit 21; a ball screw shaft 35 which is supported in parallel with the track rails 23 by a bearing provided on the base 1 and in which axial direction is restrained rotatably; a servomotor 45 for driving the ball screw shaft 35; and a ball screw nut 37 which is installed on the lower surface of the moving base 17 so as to threadedly engage with the ball screw shaft 35, and the ball screw shaft 35 and the ball screw nut 37 are provided at an arbitrary position between the paired track rails 23 for linear guide.

Abstract: A molding method and apparatus is shown which utilizes a plasticizing or injection unit in combination with a horizontal booking press having a first or moveable mold platen carrying a first portion of a mold or molds, and a second, or fixable, door platen carrying a second portion of a mold or molds. The door platen swings open and closed on a hinge, and is fixable in its closed position. When the moveable mold platen is in its′ closed position adjacent the fixed position of the door platen, a mold cavity is formed by the first and second portions of the mold or molds, and material is injected into the mold cavity.

Abstract: Injection moulding apparatus with a stationary mould clamping plate and a moveable mould clamping plate as well as shafts fixed to one mould clamping plate and passing through openings in the other mould clamping plate, at least one of which has at least one thread on its free end, whereby at least on this free end of the one shaft a drive nut as well as an additional nut for the transmission of the closing force are arranged.

Abstract: In a two plate closing unit of an injection molding machine the stationary and the movable mold mounting plates are connected by columns, wherein the columns that traverse the fixed mold mounting plate are fixedly connected to a clamping cylinder in which the columns configured at their ends as pressure plungers configured for generating a clamping pressure reciprocate, and while some of the clamping plungers are dual action plungers, the clamping plungers are coupled to a spindle drive and drive unit, such that the spindle drive is at the same time the control drive for a stepped plunger and the closing force and the closing and opening motion is realized by a single drive which operates the spindle and the plunger cylinder unit.

Abstract: Injection molding machines must be provided with devices which ensure that the mold mounting plates when in open position cannot inadvertently close, wherein the conventional safety devices include a toothed locking bar disposed between two mold mounting plates and are provided with a ratchet mechanism, but which obstructs accessibility in the space between the two mold mounting plates, so that according with the present invention a blocking unit is disposed outside the space between two mold mounting plates for engagement of the drive unit of the closing unit to thereby prevent an inadvertent closure.

Abstract: An injection-molding die, which comprises a movable die platen guided via crossbeams is provided, wherein an adjusting element is positively connected to each crossbeam and can be adjusted axially relative to the crossbeam via a central drive and the position of the die platen changes relative to the crossbeams. An apparatus and method is provided in which at least one of the adjusting elements can be locked against an axial movement and against rotation by means of a fixing device. The fixing device may be a piston element in a closure cover arranged on the movable die platen.

Abstract: A drive unit (21) is actuated to rotate a ball screw (20). Then, a ball nut (19) included in the ball screw and a cross bead (18) advance toward a movable platen (16) to extend a toggle link mechanism (17) gradually. Consequently, the movable platen (16) advances along tie bars (14), a movable platen support member (24) attached to the movable platen (16) moves on a base frame (11) and a movable mold (22) is brought into contact with a stationary mold (23). When the mold consisting of the movable mold (22) and the stationary mold (23) is thus clamped, a part of the frame provided with a recess (27) of the movable platen support member (24) is deformed elastically to permit the deformation of the movable platen (16) and movable mold (22). Thus the movable platen (16) is not restrained from deformation, clamping force can be uniformly applied to the mold and accurate moldings can be molded.

Abstract: To displace a moving mold mounting plate (3), a threaded spindle drive is inserted between the moving mold mounting plate (3) and a fixed mold mounting plate (16), whereby one end of each threaded spindle is mounted in the fixed mold mounting plate (16) and is configured as a piston (9) of a hydraulic piston and cylinder unit. The pistons are mounted in the fixed mold mounting plate (16) in hydraulic cylinders and an increased clamping force is created for the platen clamping mechanism by an appropriate impingement of the piston (9). In addition, the invention provides a detachable anti-rotation mechanism (23) for the threaded spindles (15). The invention thus allows an inclined position of the mold mounting plates (3, 16) to be corrected, by the targeted rotation of one or more threaded spindles.

Abstract: A mold clamping apparatus of an injection molding machine is equipped with a drive mechanism for opening, closing, and clamping a mold. The drive mechanism includes a first drive mechanism portion including a first drive motor portion and a first ball-screw mechanism portion and advancing and retracting a movable platen in order to effect high-speed mold opening/closing operation; a second drive mechanism portion including a second drive motor portion and a second ball-screw mechanism portion and pressing a pressure platen in order to effect high-pressure mold clamping operation; and a clutch mechanism for connecting the pressure platen to the movable platen in a pressure applicable manner when the movable platen is located at a mold close position. The first drive mechanism portion advances and retracts the movable platen in order to effect high-speed mold opening/closing operation.

Abstract: An injection molding machine comprising a substantially C-shaped machine frame, on the one limb (9) of which is mounted a stationary mold mounting plate (2) and on the other limb of which is mounted a closing mechanism for driving a movable mold mounting plate, wherein the free ends of the limbs of the machine frame, which ends are not connected by beam members, deform under the influence of the closing force which occurs during the closing operation, and wherein at least one of the mold mounting plates (2) and/or an end plate carrying the closing mechanism are respectively supported against the closing force at their upper and lower edges, and the lower support of the mold mounting plate(s) (2) or the end plate (3) respectively is formed by a bending pin (10) which extends transversely with respect to the longitudinal direction of the machine.

Abstract: A device for molding objects includes a mold having a molding space enclosed therein and adapted to be filled by a fluid mold material intended to solidify therein. The fluid mold material is injected under pressure into the molding space and solidifies under this high pressure. A chamber receives the mold and is filled with a medium. The medium filling the chamber and surrounding the mold is pressurized. The pressurized medium acts upon the mold from all directions with at least the same pressure magnitude as the pressure of the mold material within the mold. Therefore, the mold is isostatically balanced by the forces acting upon the mold by the mold material and the medium.

Abstract: A mold interlocking device that includes a first portion attached to a mold half that has a head with a channel and an insert therein that is received in a pocket of a receptacle of a second portion that is attached to another mold half. In one embodiment, the head comprises sidewalls each with channels that receive a replaceable insert therein. Preferred inserts include rollers, plates, plates with lubricating plugs, and plates comprised of layers. In one embodiment, each sidewall of the head has a tapered section disposed between a mounting base and a straight section and each pocket is defined by a complementarily contoured sidewall. In another embodiment, each head sidewall further includes a second tapered section adjacent the free end of the head.

Abstract: A mold clamping apparatus of an injection molding machine includes a drive mechanism. The drive mechanism includes a first drive mechanism for opening/closing a mold at high speed through advancement/retreat of a movable platen effected by means of a first drive motor unit and a first ball screw mechanism; a second drive mechanism for clamping the mold at high pressure through application of pressure to a pressing member effected by means of a second drive motor unit and a second ball screw mechanism; an engagement mechanism for engaging the movable platen with the pressing member in the course of advancement of the movable platen; and a clutch mechanism which is operated after establishment of the engagement effected by the engagement mechanism, in order to interlock the pressing member with the movable platen to thereby enable the pressing member to apply pressure to the movable platen.

Abstract: A closing unit for plastic molding machine includes a lower mold mounting plate, and an upper mold mounting plate, which are moveable via a pivot bearing between an open position and a closed position and can be locked in the closed position by a locking mechanism. The upper mold mounting plate is pivotable by a crank drive relative to the lower mold mounting plate, whereby the closed position is suitably commensurate with a dead center position of the crank drive. The lower mold mounting plate may be swingably mounted and includes locking members to secure the lower mold mounting plate in at least one pivot position. Further locking members are provided to secure the upper mold mounting plate in the open position.