Abstract: A clamping mechanism of a molding machine, including a bed; a stationary platen mounted on the bed, and carrying a stationary mold; a guide bar arranged fixedly relative to the stationary platen, and defining a longitudinal guiding axis; a first movable platen arranged movably relative to the stationary platen along the guiding axis, and carrying a movable mold; a support structure interposed between the guide bar and the first movable platen, and movably supporting the first movable platen on the guide bar along the guiding axis; a second movable platen separate from the first movable platen, and arranged movably relative to the stationary platen along the guiding axis; a connecting member connecting the first movable platen and the second movable platen to each other; and a drive section for applying a drive force to the second movable platen, to move the first movable platen and the second movable platen along the guiding axis.

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 platen (50) for a molding machine includes an intermediate support structure (20) between two planar walls (16, 18) having ribs (40) arranged at a non-normal angle ? to a first wall (18). The ribs (40) couple forces from the first wall (18) to the second wall (16) in such a way that bending of the second wall (16) is resisted. This adds to the rigidity of the second wall (16) and hence the platen (50), adding to flatness of the arrangement. Gussets (42) may be provided extending between the ribs (40) and the intermediate support structure (20). This has the effect of surrounding and supporting an injection bore (14) and further adding to the coupling of forces to the edge portions of the second wall (16) to resist forces acting to bend the wall.

Abstract: The present invention is a force detecting controlling device for a screw of an injection molding machine, which utilities a load cell as a force sensor for injection, holding pressure and back pressure. The load cell arranged on a rear fixed plate directly detects a force applied onto a ball screw nut. Because the ball screw nut is fastened on the load cell, and the load cell is fixed on the rear fixed plate, the force on a ball screw is directly transmitted to the ball screw nut. Therefore, a total value of the force on the ball screw produced by back pressure and friction among mechanical parts are equal to a force value of the ball screw nut applying onto the load cell. The injection force detected via the load cell for an instant response reaches a close loop control and procedures of holding pressure and back pressure are specifically controlled as well.

Abstract: A molding machine includes a movable mold support apparatus, the movable mold support apparatus including a mold mounting plate, a first load receiving part and a second load receiving part, and a load transmit member having a first end connected to both the first load and the second load receiving parts and a second end connected to a rear surface of the mold mounting plate, wherein a distance between the center of the mold mounting plate and the second end of the load transmit member is shorter than a distance between the center of the mold mounting plate and the first load receiving part and the second load receiving part.

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 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 switching over a supply of the elec

Abstract: An assembly disposed within a mold for forming openings in a plastic part includes a punch pin and a backing pin having faces disposed flush with a surface of a mold cavity. The backing pin is disposed opposite the punch pin. The punch pin is driven into the completed plastic part removing material to form an opening. The waste material is driven into a bore housing the backing pin. The backing pin recedes into the bore to accept the waste material. Upon ejection of the plastic part the waste material ejects from the mold cavity as the backing pin moves back to a position flush with the surface of the mold cavity.

Abstract: A fixing device for moulds for plastic articles, where a pair of half-moulds (3, 4) in which a force plug (11) can be inserted, comprises at least one tie rod (6) for keeping the two half-moulds in a closed position, the said tie rod being hinged, at one end, to the mobile half-mould and having a second end of a hammer-headed shape which hooks to two gripping jaws (60, 61). The tie rod (6) is hinged to a connecting rod which rotates on a pivot fixed to the resting base (14), which, in the movement of rotation, sets the tie rod (6) along the line corresponding to the centroid of the pressure forces produced during the moulding operation.

Abstract: Disclosed is a compression molding method comprising the steps of: calculating an average value of mold clamping forces sensed in a plurality of mold clamping mechanisms for clamping a stationary and a movable mold half; obtaining a first control signal on the basis of deviation between a preset target mold clamping force and an average value of sensed mold clamping forces; sensing positions of movable members of the mold clamping mechanisms; obtaining an average value of sensed positions; setting the average value as a successive target position; obtaining a second control signal on the basis of deviation between each of the sensed positions and the successive target position; and obtaining a clamping control signal for each of the clamping mechanisms by adding the first control signal and the second control signal. An apparatus suitable for implementing the method is also disclosed.

Abstract: An object of the present invention is to suppress a clamping force from sharply increasing when dies are clamped in an electric direct-acting die clamping unit of an injection molding machine. A movable platen is arranged to face a stationary platen. A stationary die is attached to the front surface of the stationary platen, whereas a movable die is attached to the front surface of the movable platen. The movable platen is connected to the front surface of a backup plate via four coil springs. A nut of a ball screw is fixed at each of diagonally-opposed corners of the backup plate. The threaded rod of the ball screw passes through the backup plate via the nut. The tip portion of the threaded rod is rotatably connected to the stationary platen. The rear end portion of the threaded rod is connected to a motor.

Abstract: A platen of an injection molding machine includes a plate-shaped center area having corners, each corner formed with a recess. A plurality of sleeves is received in the recesses of the center area and defines bores for accommodation of column-like holding and/or guide elements. The sleeves have an outer surface in confronting relationship to the center area and are configured for only partial connection to the center area, thereby establishing an elastic connection between the center area and the sleeves.

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: 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: An injection molding machine includes a stationary platen, a movable platen constructed for movement relative to the stationary platen, at least one tie bar for tension-proof connection of the fixed and movable platens, and a traction transmitting securing device including a securing element, disposed on a rear side of one of the platens, for interacting with the tie bar within an engagement zone. The securing element and the tie bar are provided with a number of projections and recesses in axial spaced-apart relationship to establish a form-fitting connection, whereby the projections and the recesses are pressed together when exposed to a tensile stress and interlock at an axial clearance which increases along the engagement zone in axial direction corresponding to the tensile stress of the tie bar.

Abstract: A two-plate injection molding machine comprising a movable mold mounting plate and a stationary mold mounting plate and at most three bars passing through the edge region of the mold mounting plates, wherein the closing force is applied to the movable mold mounting plate by pull bars, wherein at least two corner regions of the mold mounting plates have pull bars passing therethrough.

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 mold closing device for an injection molding machine for plastics includes a movable tool clamping plate having a first side opposedly oriented to a fixed tool clamping plate for cooperatively mating tool halves with the fixed tool clamping plate and having a second side distal from the fixed tool clamping plate. The movable tool clamping plate is mounted on a machine slide connected to a first and second guide shoe for traversing in an axial direction two guide rails associated with a respective edge of the movable tool clamping plate. The mold closing device also includes two bending elements. Each of the two bending elements connects a corner of the second side of the movable tool clamping plate to a guide shoe that is cooperating with one of the at least two guide rails. Each bending element is rigid perpendicular to the respective guide rail and includes a bending region that has a predeterminable elasticity in the axial direction to absorb a closing force.

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: An injection molding machine (1) comprising a fixed mold half (4) mounted on a fixed plate (3) integral with the machine frame (2) and a moveable mold 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 mold closing position to a mold 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: 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: An injection molding machine with a vertically displaceable closing unit, comprises a plate-like lower yoke as the counterpressure plate; a plate-like upper yoke as the stationary mold clamping plate; at least three vertically aligned struts connecting the lower yoke and the upper yoke with each other in a force-locked manner; as well as another plate-like element serving as the displaceable mold clamping plate, which is displaceable on the struts by one or more driving cylinders having a small cross section and a large stroke length. The displaceable mold clamping plate is displaceable by one or more driving cylinders stopped on the displaceable mold clamping plate and on the counterpressure plate, such that molding tool halves arranged on surfaces of the mold clamping plates can be driven from a maximum spacing into a position of mutual abutment, and vice-versa.

Abstract: The present invention provides a molding system as well as a method for encapsulating semiconductor packages, wherein a cavity plate is kept at a desired temperature during molding. The system includes a mold comprising a first mold piece and a second mold piece adapted to define a mold cavity for enclosing one or more semiconductor devices for molding, and a cavity plate adapted for mounting in the cavity to introduce encapsulation material to the semiconductor device(s). The system also includes retaining means adapted selectively to hold the cavity plate against the first mold piece or the second mold piece whereby to maintain the cavity plate at the desired temperature.

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: The invention relates to a closing unit for tools to be pressed together against opening forces having two tool carriers which can be displaced towards one another. In accordance with the invention, there are two jaws engaging over the tool carrier plates at the side in each case in a closed position while building up a bias. The closing unit is advantageously designed in the form of bias modules for tools.

Abstract: Apparatus for generating surface pressure in for example an injection molding machine wherein the machine has a stationary carrier platen, a clamping platen and a closing platen that can be moved electromechanically, and wherein the material to be molded is disposed between the closing and carrier platen. The compressive force of the closing platen is actuated by piezoelectric actuators.

Abstract: A mold clamping apparatus able to shorten the cycle time required for mold opening and clamping operations and enabling easy pullout of tie bars, provided with a fixed die plate for holding a fixed die, a moveable die plate for holding a moveable die plate and provided movable in mold opening/closing directions, tie bars provided with linking parts at their free ends and supported by the moveable die plate, clamping cylinders provided at the moveable die plate and driving the moveable die plate relative to the tie bars, movement mechanisms for making the moveable die plate move in the mold opening/closing directions and opening and closing the dies, contacting members against which the free ends of the tie bars contact so as to position the tie bars at predetermined positions with respect to the fixed die plate, and half nuts for linking with linking parts of the tie bars positioned at the predetermined positions and linking the tie bars with the fixed die plate.

Abstract: A closing unit with rigidly mounted supporting rails (2), a stationary (6) and a movable (12) clamping plate, has a pivot bearing (14, 15) behind each of these clamping plates (6, 12). A closing drive (23) is hinged in these pivot bearings (14, 15) so that it can freely move between said pivot bearings (14, 15) and the closing forces exercised by the closing drive (23) can exercise no bending moment on the machine frame (2, 3).

Abstract: Press for the injection-moulding of plastic materials and/or non-ferrous alloys comprising a movable plane and a fixed plane, on whose opposite sides a mould and a counter mould are applied. Four cross members are provided associated to said movable (10) and fixed (12) planes and clamping means (46) acting on said cross members (14) in order to transmit the pressure generated by a piston means to said movable plane (10) during the injection phase. The cross members (14) are, at one end, integral with the movable plane (10) and project from this on the side of the fixed plane (12), four operating heads (28), each of them comprising one of said piston means for controlling the closing of the mould and counter mould and one of said clamping means (46).

Abstract: A method and a mold clamping press for injection molding machines; the press comprises a stationary platen and a movable platen operatively connected to control means which can be operated to relatively move the platens towards and away from each other. Slidable tie-rods, each connected to a respective control cylinder, axially extend between the platens passing through locking bushes rotatably supported by a platen of the press. Each locking bush and the corresponding tie-rod are provided with opposite intermeshing screw threads having an axial clearance; the bushes are made to rotate in synchronism and in a way correlated to the displacement of the movable platen, avoiding any frictional contact between the screw threads during the closing and opening of the mold.

Abstract: A movable platen 5 which is provided between a base platen and a stationary platen, is connected to a mold clamping ram13 of a mold clamping cylinder 8. A pair of mold clamping cylinders 8 include a cylinder of which the inner diameter of their lower end portions is smaller than the inner diameter of the other portions, the mold clamping ram 13 having a piston 14 which fits to the lower end, a booster ram 16 which is inserted into the mold clamping ram, and a circulation device 20 which is provided to a side portion of the mold clamping cylinder.

Abstract: The value of a monitor item is detected in a monitor region predetermined in relation to a mold closing operation during the course of a mold clamping step. Emergency processing is performed when the detected value exceeds a threshold value. There are preset an anomalous-state mold opening velocity higher than a normal-state mold opening velocity on the basis of which mold opening control is performed in a normal state, and an anomalous-state-velocity end position at which mold opening control based on the anomalous-state mold opening velocity is ended. Mold opening control based on the anomalous-state mold opening velocity is performed in a portion of the monitor region ranging from a point corresponding to time when the detection value has exceeded the threshold value, to a point corresponding to the anomalous-state-velocity end position.

Abstract: The novel solution provides a closing part comprising an electromechanical drive for a CD injection molding machine having a working stroke and a servicing stroke. The entire mold closing unit is characterized by the combination of a short-stroke crank mechanism which is operated by an electric motor and which is provided for the working stroke and of a central electromotive column-type nut drive for the servicing stroke. According to the invention, synchronous motors or asynchronous motors are used with corresponding servo boosters to realize servo axles. The central column drive is used as a control element of the closing force control, together with a force sensor for detecting the closing force, as an actual value transmitter and as a control device.

Abstract: A mold-clamping control method for an injection molding machine includes the steps of detecting a value of a monitor item in a monitor region predetermined in relation to a mold closing operation during the course of a mold clamping step; differentiating the detected value in order to obtain a differential detection value; and performing emergency processing when the differential detection value exceeds a threshold value. The monitor item may be torque or velocity of a servomotor for performing a mold closing operation.

Abstract: The mold clamp apparatus comprises a toggle mechanism provided with a hollow pressure support body at the link tip. A movable platen is provided oppositely to a fixed platen and is supported by inserting therethrough a tie bar across a link reception platen of the toggle mechanism and the fixed platen of the toggle mechanism. A clamping rod enters and exits a pressure support body at the back center of the movable platen. A quick traverse mechanism of the movable platen is provided. A clamping linkage apparatus is arranged between the movable platen and the toggle mechanism by inserting the tie bar through the installation platen. A linkage plate having a tilting pin of the installation platen inserted therein is attached to the pressure support body together with a casing.

Abstract: A mold clamping unit employed in an injection molding apparatus for opening and closing a mold having a movable mold plate and a fixed mold plate. The mold clamping unit comprises a mold clamping cylinder, mold opening means for applying a mold opening force of a predetermined magnitude to the movable mold plate in the direction from the closed position to the fully open position and moving the movable mold plate from the closed position to the predetermined half-open position located between the closed position and fully open position, and switching means for switching the mold clamping force generated by the mold clamping cylinder between the first mold clamping force which is larger than the mold opening force and a second mold clamping force which is smaller than the mold opening force by switching the supply pressure of working fluid supplied to the mold clamping cylinder.

Abstract: A hybrid injection unit for an injection molding machine includes a plasticizing screw having a shaft and constructed for rotation and axial displacement. Operatively connected to the shaft is a first electric motor for rotating the plasticizing screw, and a second electric motor for axial displacement of the plasticizing screw. A cost-efficient construction of the second electric motor and reduced stress of the linkage between this electric motor and the shaft is realized by providing at least one piston and cylinder unit in fluid communication with a pressure source for support of the second electric motor in injection direction, and a traverse acted upon by one end of the piston and cylinder unit and rotatably supporting the shaft of the plasticizing shaft. The traverse acts upon the shaft between a force introduction point of the second electric motor into the shaft, on one hand, and the plasticizing screw, on the other hand.

Abstract: A platen (50) for a molding machine includes an intermediate support structure (20) between two planar walls (16, 18) having ribs (40) arranged at a non-normal angle &bgr; to a first wall (18). The ribs (40) couple forces from the first wall (18) to the second wall (16) in such a way that bending of the second wall (16) is resisted. This adds to the rigidity of the second wall (16) and hence the platen (50), adding to flatness of the arrangement. Gussets (42) may be provided extending between the ribs (40) and the intermediate support structure (20). This has the effect of surrounding and supporting an injection bore (14) and further adding to the coupling of forces to the edge portions of the second wall (16) to resist forces acting to bend the wall.

Abstract: An electrically powered, molding clamp assembly enables rapid closure of platens, while exerting a force sufficient to maintain the platens in the closed position during molding without the necessity of large horsepower motors of high energy. Force accumulators join at least one of the platens to rotatable threaded rods connecting the platens. A first electric drive means rotates the threaded rods at a first rotational speed to move one or both of the platens between open and closed positions, and a second electric drive means rotates the threaded rods at a second rotational speed less than said first rotational speed to move the accumulators between said uncompressed and compressed positions when the movable platen is in its closed position, creating a clamping force on the platens.

Abstract: In a mold clamping mechanism of a molding machine, at least two pieces of movable platen guides are provided separate from tie bars, inserting the movable platen guides into the holes formed in a movable platen. A sliding part of each movable platen guide on which at least the movable platen slides is given in the form of a ball spline shaft. Also, ball spline nuts are provided in the holes formed in the movable platen.

Abstract: A stationary platen (14) and a movable platen (18), which are connected with each other by tie rods (28), to which metallic molds are respectively attached, are opened and closed by an electrically driven ball screw mechanism. The movable platen is composed of a platen body and a pressure plate (304) attached to the platen body which can be contacted with and separated from the platen body. Between the movable platen and the pressure plate, clamping is conducted by the expansion and contraction of a bladder (318) into which hydraulic oil for clamping can be introduced. The bladder houses an insert die (320), the shape of which is identical with an internal shape of the bladder, and a hydraulic oil path is formed in the insert die. While a ball screw member (102) of an electrically driven ball screw mechanism is being supported being capable of moving in the axial direction, a brake means (130) for restricting rotation is provided, and a mold releasing cylinder mechanism (116) is connected.

Abstract: The present invention relates to a high speed direct mold clamping apparatus. The direct mold clamping apparatus has a grooved channel for the flow of oil inside a clamping cylinder to minimize the flow of oil between inside and outside the clamping cylinder. Then, the clamping ram can perform high speed reciprocation in the clamping cylinder.

Abstract: The closing unit of a three-plate injection-molding machine comprises a die plate (1), a movable mold-clamping plate (2) and an end plate (3). Therein the die plate (1) and the end plate (3) are connected to one another via tie bars (4) on which the movable mold-clamping plate (2) is displaceably guided, and a toggle-lever arrangement (5), on which a drive unit (6) acts is provided between the end plate (3) and the movable mold-clamping plate (2). An encasing element (13) of variable length extends between the end plate (3) and the movable mold-clamping plate (2).

Abstract: In a molding machine, a fixed platen which supports a fixed die is disposed on one end of a base plate. A movable platen which supports a movable die and a supporting mount which supports each one end portion of the four tie bars are mounted on slide units. The movable platen and the supporting mount are advanced so as to close the die, a tip portion of each tie bar is locked to the fixed platen by a lock mechanism, and a die clamping cylinder provided on the movable platen is actuated to generate a clamping force so as to execute molding. After that, the lock mechanism executes an unlocking operation so as to cause the movable platen and the supporting mount to retreat to a die open position. Furthermore, an attaching and detaching mechanism releases the die clamping cylinder so as to cause only the supporting mount to significantly retreat from the movable platen, and thus the four tie bars are completely evacuated from the fixed die and the movable die.

Abstract: A clamping mechanism of a molding machine, including a bed; a stationary platen mounted on the bed, and carrying a stationary mold; a guide bar arranged fixedly relative to the stationary platen, and defining a longitudinal guiding axis; a first movable platen arranged movably relative to the stationary platen along the guiding axis, and carrying a movable mold; a support structure interposed between the guide bar and the first movable platen, and movably supporting the first movable platen on the guide bar along the guiding axis; a second movable platen separate from the first movable platen, and arranged movably relative to the stationary platen along the guiding axis; a connecting member connecting the first movable platen and the second movable platen to each other; and a drive section for applying a drive force to the second movable platen, to move the first movable platen and the second movable platen along the guiding axis.

Abstract: A plastic injection molding station having a mold assembly with a plurality of first mold sections and a plurality of second mold sections. Each of the first mold portions adapted to cooperate with one of the second mold portions so as to define a plurality of mold cavities, the mold cavities being of equal distance across the length of the mold assembly and further defining a shape of an article to be injection molded therein. The first mold portions and second mold portions are adapted for relative movement between an engaged position where the first and second mold portions define the mold cavities and a disengaged position where the first and second mold portions are separated from one another. The station also includes a locking assembly adapted to lock the first and second mold portions together in the engaged position.

Abstract: Process and device for producing moulded parts from plastic

Abstract: A mold mounting plate of an injection molding machine, in particular for plastic, includes a baseplate having a front face for receiving a mold. The weight of the mold mounting plate can be reduced by arranging a dome-shaped element with its base on the backside of the baseplate opposite the front side for supporting the baseplate. Such mold mounting plate is easy to manufacture as a single cast part.

Abstract: The invention relates to an interlock for a column, comprising a piston with a piston rod, such that the piston rod is disposed in a claw bush, the claw bush being disposed in a single- or multi-part plate, such that the piston and the claw bush can move in the single- or multi-part plate. In one embodiment, the claw bush has at least two stages, to apply the force in a distributed manner, the contour of the stages corresponding to the end of the piston rod and/or to the end of the column, the average radius of the first stage differing from the average radius of the second stage.

Abstract: A platen of an injection molding machine includes a plate-shaped center area having corners, each corner formed with a recess. A plurality of sleeves is received in the recesses of the center area and defines bores for accommodation of column-like holding and/or guide elements. The sleeves have an outer surface in confronting relationship to the center area and are configured for only partial connection to the center area, thereby establishing an elastic connection between the center area and the sleeves.

Abstract: An injection molding machine includes a movable platen specifically adapted to uniformly distribute a clamp force to the mold half surfaces thereby reducing localized deflections and unwanted flash on the molded article.