Abstract: A die clamp assembly for an extruder comprises at least one passage through which product being extruded flows. The die clamp assembly is attached to an extruder and comprises a last barrel that is connectable to the extruder. The last barrel comprising a flange and the extruder and last barrel define at least one passage through which product flows; at least one die body comprising at least one die body passage that communicates with the at least one passage; and at least one die plate that comprises at least one die plate passage that communicates with the die body passage and at least one opening so product can be extruded from the at least one opening. A clamp collar assembly connects corresponding peripheral surfaces of the last barrel to the die body, and comprises a closed position that connects the last barrel to the die body and an open position that permits separation of the last barrel and the die body.

Abstract: An injection molding apparatus having an A side and a B side for use with interchangeable molding tools that allow the center gating of a part. Center gating directly into a molding tool provides a uniformly stress resistant cylindrical part. The use of interchangeable molding tools provides easy replacement of tools that are designed to produce a variety of different parts. Each interchangeable molding tool provides a runner tool distribution system to allow injected material to enter directly into the center of a part to be molded. Once the part is molded, the runner that is formed in the runner tool distribution system is separated from the molded part. The molded parts are then simultaneously released from the mold assembly.

Abstract: A connector mold is provided to improve connector molding efficiency. Thus, a first insert 30 for a first male connector 10 and a second insert 31 for a second male connector 15 can be exchangeably mounted in a movable mold 22. A first closing projection 32 fittable into a second identification rib forming groove 26 of a fixed mold 21 projects from the front surface of the first insert 30, and a first preventing rib forming groove 33 for forming an error assembling preventing rib 13 of the first connector 10 extends on the upper surface of the first insert 30 on an extension line of a first identification rib forming groove 25 of the fixed mold 21. When the molds 21, 22 are closed, a closed connector molding space 20A is defined therebetween and the first closing projection 32 closes the second identification rib forming groove 26.

Abstract: In the case of an injection molding machine for processing plasticizable materials, a structural unit, which includes at least a movable mold carrier, a stationary mold carrier and a closing arrangement of a mold closing unit, is supported on support elements on a machine base. A pivotal axis, about which the structural unit is pivotable, extends transversely relative to a closing axis. A drive unit is provided for pivoting and for displacing the structural unit and is connected pivotally to the machine base and at an articulation point to the structural unit, which articulation point is disposed at a spacing from a pivotal axis. Upon transferring the structural unit from the horizontal position into the vertical position, the drive unit initially pivots the structural unit and then also displaces it.

Abstract: A runner plate for an injection molding system comprises a plate typically having a plurality of corners, and typically apertures extending through the plate for receiving leader pins of the molding system for support of the plate in the molding system. Also at least a pair of outrigger supports may be provided, the outrigger supports being carried by the plate, each at a different position on the plate, and typically extending diagonally outwardly relative to adjacent plate edges. Also the outrigger support may carry rollers which are positioned to engage tie bars of the mold press for rolling contact therewith and support of the system.

Abstract: Apparatus for the expansion and/or heat treatment of oleo resinous material of the type which includes a tubular housing having a rotatably driven screw for conveying material to be treated towards the outlet end of the tubular housing. An outlet discharge device is adjacent the outlet end of the housing for providing for the discharge of the material from the outlet end. The outlet discharge device includes a main ring attached to the housing at the outlet end. The head in the preferred embodiment has a plurality of teeth and depressions around the periphery of the head and the main ring also has a plurality of matching teeth and depressions in the inner circumference thereof. Alternatively, the peripheral face of the head and the inner circumference of main ring may be without depressions and teeth, but instead may respectively be in the form of a continuous face.

Abstract: A die system for the extrusion of polymer permits external cleaning and maintenance without shutting down the operation. Removable die inserts are located on one or both sides of the die opening section through which polymer is extruded. The inserts are spaced from the die opening section, by a very small distance, so as to avoid interfering with the opening section. When molten polymer accumulates and burns in areas surrounding the die opening section, the inserts can be removed and replaced without interrupting the extrusion of polymer.

Abstract: The present invention relates to a carrier assembly for supporting the mold center section of a stack mold. The carrier assembly has a pair of mold supports to which the mold center section can be attached. Each mold support is movable along a linear rail attached to the base of a molding machine and has at least one block containing a linear bearing mounted thereto for engaging the linear rail. Each mold support further includes a linkage assembly for connecting the mold support to other platens so as to synchronize movement of each mold support with movement of at least one other platen.

Abstract: A movably mounted and adjustably positionable feed-roll head for a food extruder or the like (110, 210) having a unitized head assembly which includes at least one feed-roll (114, 116, 214, 216) and its related operational structure and rigid but movably mounted supports (124, 224, 225) for each end of the feed-rolls and related structure, whereby the entire unitized assembly may be moved relative to the remainder of the extruder for cleaning, die change, etc., without disassembly or removal of the feed-rolls, etc. The preferred mounting for the unitized structure is a pivot mechanism (126, 226, 227) for each of the feed-roll supports, and a readily adjustable repositioning mechanism (128, 228) such a screw jack assembly (232) is coupled to the other side of the feed-roll supports, whereby gradual and progressive position changes of the unitized feed roll assembly are made possible.

Abstract: A die clamp assembly for an extruder comprises at least one passage through which product being extruded flows. The die clamp assembly is attached to an extruder and comprises at least one adapter plate that is connectable to the extruder. The die clamp assembly also comprises at least one adapter plate passage that communicates with the passage of the extruder; at least one die body comprising at least one die body passage that communicates with the adapter plate passage; and at least one die plate that comprises at least one die plate passage that communicates with the die body passage and at least one opening so product can be extruded from the at least one opening. A clamp collar assembly connects corresponding peripheral surfaces of the adapter plate to the die body, and comprises a closed position that connects the adapter plate to the die body and an open position that permits separation of the adapter plate and the die body.

Abstract: A tiebar removal method and apparatus for tiebar removal in a two (2) platen injection molding machine wherein some of the tiebars may be removed while others remain in the injection molding machine.

Abstract: A mold insert (12) is held down in a mold base (16), released, and then ejected upwardly, by positioners (30, 32) that each includes a lock member (50) and an eject member (52). The mold insert has a recess (40) in each side along its front portion and has a largely downwardly-facing shoulder (42) at each side along the rearward portion thereof. Two largely cylindrical bores (44, 46) are formed in the mold base and each communicates with the recess and shoulder at each side of the mold insert. When the lock member is pivoted about the bore axis (54,56), a lock part (74) is moved out of the recess in the mold insert to allow the mold insert to move up out of the mold base. When the ejector member is pivoted about the bore axis, a radially-projecting ejector part (80) moves upwardly against the shoulder on the mold insert to push up the mold insert so its upper end lies above the mold base and can be lifted out.

Abstract: Flash built-in and flashless types of lens-fitted photo film units respectively include first and second front covers. The first front cover includes a first front wall and a first cover wall formed in an erect orientation relative to the first front wall. The second front cover includes a second front wall shaped partially equally to the first front wall. A second cover wall is formed in an erect orientation relative to the second front wall and shaped at least partially equally to the first cover wall. In molding operation for the front covers, the first or second cover wall is formed between a main cavity mold and a main core mold, which are confronted with each other. The main core mold is movable relative to the main cavity mold in a direction according to the erect orientation of the first and second cover walls. The first or second front wall is formed between the main core mold and a selected one of first and second auxiliary molds.

Abstract: An ejection unit for an injection molding machine has a movable and a stationary mold mounting plate. Anchored to the movable mold mounting plate is the carrier plate on which an electric motor is supported by a bracket. An ejector plate is displaceable by the electric motor by way of a drive output shaft. A drive wheel for a further subsidiary function of the injection molding machine, for example mold height adjustment, is coupleable to the drive output shaft.

Abstract: A mold closing unit is provided with a device for handling and/or removal of moldings, comprising a supporting element for supporting the device in the area of the mold, an actuating element, by which handling element penetrating into the mold cavity is operable, as well as a drive unit for driving the actuating element. The drive unit drives the actuating element electromechanically and at least drive unit, supporting element and actuating element constitute structural unit which is detachable from the mold closing unit. The drive unit is a hollow shaft motor at least partially receiving the actuating element.

Abstract: An injection press apparatus for molding/joining separate parts. The apparatus having a work table with first and second work stations for injecting material into a mold. A movable extruder/injection assembly is provided which has an extruder portion for extruding material, and an injection portion for injecting material. The extruder portion and injection portion are in fluid communication such that material is provided from the extruder portion to the injection portion prior to injection of material from the injection portion to the mold. The injection portion of extruder/injection assembly has a nozzle assembly for receiving and injecting material from the injection portion to a self-actuating mold clamp assembly at the first or second work stations. The first and second work stations support the mold clamp assembly which receives the molding material. The extruder/injection assembly is movable between the first and second work stations by a shuttle assembly.

Abstract: A stamper protecting layer is interposed between a mold and a stamper of an optical disk molding apparatus, so that forces generated by extension and shrinkage of the stamper in a diametrical direction of the stamper relative to the mold when an optical disk are molded is absorbed by the stamper protecting layer. With this arrangement, the stamper is prevented from being deformed. Accordingly quality and production of the optical disks are improved.

Abstract: The present invention relates to stack mold linkages for creating unequal strokes for use in an injection molding machine for making different sized molded parts. The stack mold linkages comprise linkages for moving each of at least two mold assemblies between a mold closed position and a mold open position and for separating the mold halves forming the mold assemblies by unequal stroke lengths.

Abstract: A substrate forming mold for forming a substrate by filling a cavity formed between a pair of matching molds 1, 2 with resin, that is, this substrate forming mold has shims 9, 12 disposed at least between a mirror finished surface plate 6 for composing one mold 1 and a stable mold base 8, and in a region inside of a fixed abutting ring 13, depending on fluctuations of plate thickness of formed substrate. As a result, the plate thickness of formed substrate can be adjusted finely, and fluctuations occurring in the radial direction or peripheral direction of the formed substrate can be decreased.

Abstract: An apparatus and method for assembling a lens-forming structure, the structure having a front mold, a rear mold, and a gasket defining an axially extending bore, including a collet for supporting the gasket so that at least one of the front mold or the rear mold are insertable into the bore thereof, a robotic arm for inserting the front mold into the bore of the gasket, and a piston for inserting the rear mold into the bore of the gasket. The piston axially moves within the bore of the gasket a selected one of the front mold or the rear mold relative to the other mold to a desired one of a plurality of axial separation distances between the molds. Alternatively, the robotic arm can move the selected mold relative to the other mold.

Abstract: A melt spinning apparatus for extruding and spinning thermoplastic filaments as part of the fabrication of a multi-filament yarn. The apparatus includes a plurality of spinning units arranged in a row in a gas tight heated container, and each spinning unit comprises upper and lower coaxial pipes which are interconnected by means of a common supporting plate. The melt metering pump and the spinneret assembly are mounted within the pipes. A method of fabricating the apparatus is also disclosed.

Abstract: A gasket defining an axially extending bore therethrough, a front mold having a an edge circumscribing the front mold, wherein the edge is of a size to be complementarily received within at least a portion of the bore of the gasket so that the edge and the bore form a seal therebetween, and a rear mold having a rim circumscribing the rear mold, wherein the rim is sized to be complementarily received within at least a portion of the bore so that the rim and the bore form a seal therebetween. When the front mold and the rear mold are both disposed within the bore of the gasket, a volume is formed between the back surface of the front mold and the front surface of the rear mold and the interior surface of the gasket. A selected one of the front mold or the rear mold is axially and slidably movable within the bore relative to the other mold disposed within the bore to a desired one of a plurality of axial separation distances between the molds, whereby the volume is different for each separation distance.

Abstract: A system for manufacturing molded articles and simultaneous engineering of mold cavities, comprising a casting device, a machining device and interchangeable cassettes. The casting device comprises a casting mold having two mold halves, each having cassette receptacles and being moveable against each other perpendicular to a separation surface of the casting mold. The casting device also has interchangeable cassettes inserted into the cassette receptacles of the mold halves so that they abut each other and enclose the mold cavity when the casting mold is closed. The cassettes have positive guides on their sides opposite the separation surface that are insertable into the positive guides on the cassette receptacles of the mold halves. The machining device comprises a machining station such as a drill, a turning tool, a milling tool, a grinder and an eroding tool, and also a clamping device within a working range of the machining station.

Abstract: An auxiliary device is intended to be added to an injection moulding device for manufacturing disc-like information carriers. The injection moulding device comprises a mould having two mold parts which in a closed situation bound a mould cavity. An insert plate can be position against an end wall of the mould cavity, on which plate is found the information to be recorded onto the information carrier. Received in a supply holder are insert plates which can be transported by a mechanical device from and to the end wall. Positioning of the insert plates by the mechanical device takes place such that each insert plate is brought into a convex state, is placed with its central zone against the end wall and the convex form is then removed for stable positioning of the insert plate in flat state. The desired centering is thus achieved in simple manner, while friction between the insert plate and the wall is essentially prevented.

Abstract: The invention relates to a cross discharge head for extrusion equipment comprising a housing to be mounted on an extruder, which in its interior receives an annular feeding channel encompassing a passage, disposed in the housing and disposed at an angle to the direction of extrusion of the extruder, for the supply of a product to be ensheathed with the extrudate, which receives in its interior a distributor piece, and which at the exit is provided with annular outer shaping tools tapering the stream of extrudate, which are secured on the front face of the housing so as to be exchangeable, wherein the passage at the end side is encompassed by a conical guidance nipple whose outside is simultaneously also the inner shaping tool.

Abstract: A threaded shaft (52) for operating toggle joint (44) is driven for rotation by a first servomotor (46). A bevel gear (56) is mounted on the threaded shaft (52) for rotation relative to the threaded shaft (52). The bevel gear (56) is driven for rotation by a second servomotor (57). Bevel gears (60) each having a threaded bore are supported on a rear plate (42) are engaged with threaded sections (40A) of tie bars (40), respectively. Power is transmitted from the bevel gear (56) through power transmitting mechanisms (61) to the bevel gears (60). Each power transmitting mechanism (61) comprises bevel gears (62, 63) engaged with the bevel gears (56, 60), respectively, and a clutch (64) interposed between the bevel gears (62, 63). The clutches (64) are engaged and disengaged selectively to adjust the parallelism of a movable mold (36) with respect to a stationary mold (32).

Abstract: A flat blow molding machine adapted to extrude flat hollow parison from clearance between a flat core and a flat die surrounding the core, characterized in that both ends of the die are slidable in a width direction with respect to a center, the core is replaceable in accordance with expansion and contraction of the die in the width direction. According to this construction, it is possible to change the width of the flat hollow parison extruded from the clearance between the core and the die by sliding the both ends of the die in the width direction and replacing the core upon expansion and contraction of the core in the width direction. Further, if the flat core is constructed from a planar replaceable portion and curved (three dimensional) non-replaceable portions and only the planar replaceable portion is exchanged upon replacement, preparing a plurality of inexpensive-to-manufacture planar replaceable portions having different lengths is enough and the cost is reduced.

Abstract: An apparatus for making noodles includes a casing, a rolling unit mounted on the casing for flattening a mass of dough into a flat piece of dough, a cutting unit mounted on the casing for cutting the flat piece of dough into strands of noodles, a drive unit for driving operably the rolling unit and the cutting unit, a guiding unit for guiding the flat piece of dough into the cutting unit, and an adjustment unit. The rolling unit includes a cylindrical first roller and a cylindrical second roller parallel to and spaced apart from the first roller. The first and second rollers permit passage of the mass of dough therebetween. The rolling unit further includes a first shaft connected fixedly and coaxially to the first roller, and a second shaft extending axially and rotatably through the second roller. The first shaft is coupled to and is driven rotatably by the drive unit.

Abstract: An apparatus and process for producing polymeric foam, wherein reactive foam components and a low-boiling point frothing agent are brought together, sufficient pressure is applied to maintain the frothing agent in a liquid state and the mixture is passed through a permeable discharge head through which the mixture is discharged and wherein the pressure is reduced and froth is formed. The discharge head comprises one or more diffuser elements (80) having a structure such as to require division, divergence and convergence of flow paths in three dimensions within the axial thickness of the diffuser element, considered in the direction of flow therethrough. The diffuser element (80) is made of bonded, or sintered or sintered composite material, such as sintered wire.

Abstract: A paste extruder includes a machine frame; an extrusion barrel seated in the machine frame and having an open end; an extrusion die connected to the open end of the extrusion barrel; and a mandrel rod which is arranged coaxially inside of the extrusion barrel, which has a mandrel tip, and which cooperates with the extrusion die, wherein the mandrel rod is comprised of a mandrel rod tube and an inner mandrel having a portion positioned proximate to the extrusion die which projects from the mandrel rod tube and having a portion arranged inside of the mandrel rod tube which has a first section arranged at a radial distance from the mandrel rod tube, and which has a second section rigidly connected with the mandrel rod tube, and wherein the first section has an elastic element which acts transversely to one of the axial direction or the direction of extrusion.

Abstract: A flexible automated trowel for sliding formwork machine allowing the finishing of a continuous trapezoidal wall of the type having one rectangular side and one side inclined towards the top or with two angular sides. A mold supporting the trowel comprises two straight sides, an enlarging setback originating from a formwork line. A driveway cutter proceeds from the enlarging setback in the direction of the slope of the angular wall. The cutter may have a concave face which is to be placed against a moldable face to produce a superior convex face to the continuous wall. Materials like concrete for curbs, gutters, driveway entrances may be continuously poured and necessitate little or no finishing touches.

Abstract: A die for the preparation of a toner resin in an extruder having a housing defining a housing aperture therein and a conveyor for conveying the resin through the housing aperture to form a stream of resin is provided. The die includes a member connected to a first end of the housing. The member defines an opening therethrough. The cross sectional area of the opening is progressively reduced in the direction of the stream of resin for at least a substantial portion of the opening.

Abstract: A single screw extruder of the type having a drive shaft coupled to the screw for rotational movement wherein the improvement comprises coupling the drive shaft to one end of the screw through a plurality of splines on the screw.

Abstract: This invention relates to a Multi-Layer Blown-Film Extrusion Die. An Extrusion Die is a key component of extrusion equipment, used in manufacture of Blown film for packaging industry. Although this Extrusion Die relates to production of five or more layers of blown films, it can also be used for production of lesser number of layers. While in the conventional outside fed die, melt was to be conveyed around the die in a fanning-out configuration, in this invention the polymer melt is split into two streams, before being fanned or spread around the circumference. Polymer melt enters several spiral or helical grooves prior to joining the gap that enjoins melt with other layers of the melt streams. The dimensions of spiral grooves and lands are carefully calculated, keeping in view relevant factors such as melt viscosity, shear sensitivity temperature and pressure requirements etc.

Abstract: A device for manufacturing brake pads includes a base board with three flanges extending from the upper side thereof and each of the flanges has a plurality of notches defined in the sides thereof, a first mold and a second mold respectively received in the first recess defined between the first and the second flange, and the second recess defined between the second and the third flange, and cover mold mounted to the first and the second mold. The first mold has a plurality of slots and the second mold has a plurality of concavities, which are respectively located in alignment with the slots. The cover mold has a plurality of elongated recesses which communicate with the aligned slots, the concavities and the notches so that the brake pads are formed between the base board, the two molds and the cover mold.

Abstract: A twin screw extruder (10) including an elongated barrel (12), a pair of elongated rotatable screws (14) and (16) positioned within the barrel (12) for moving material therethrough, and a high-speed bearing support assembly (18) for supporting the screws (14, 16) against misalignment and wear. The bearing support assembly (18) includes a pair of rotors (42, 44) each operably coupled with corresponding extruder screws (14, 16) for rotation therewith and a stator member (46) coupled with the extruder barrel (12) for receiving the rotors (42, 44). The stator (46) includes a plurality of injection ports (62) for directing an edible lubricant such as liquid fat into the bearing assembly (18) during operation of extruder (10).

Abstract: Multi-cavity injection molding apparatus having several side gate seals seated around the front end of each heated nozzle. Actuating mechanism is provided to advance the melt distribution manifold and the attached nozzles to a forward position without removing the mold from the molding machine. In this position, the front ends of the heated nozzles protrude from the mold to facilitate removal of the side gate seals and hot tip torpedoes for cleaning or replacement.

Abstract: An extruding apparatus for producing a honeycomb structure having cell walls and a skin. The apparatus includes a die (10) and a mask (20). The mask (20) is of an annular shape of an inner diameter (D1) and is located on an annular recess formed by a taper surface (19) and an outlet end surface (18b) of the die. The mask (20) has a top surface (21), which is in contact with an outlet end surface (18b) of the die (10), so that the degree of the opening of feed holes (11a), (11b) and (11c) are controlled by the particular shape of the end surface (21). A change of the mask to the one as shown by a phantom line (30) allows the shape of the top surface to be changed from the one shown by (21) to the one shown by (31), which allows the degree of the opening of the feed holes (11a), (11b) and (11c) to be desirably controlled.

Abstract: The invention is directed to a method for adapting injection molding machines utilizing horizontally opening and closing molds and their opening and closing mechanisms to vertically opening and closing molds and their opening and closing mechanisms and vice versa. An injection molding machine might, for example, be utilized to inject hot synthetic resin substantially horizontally into a cavity between horizontally opening and closing molds associated with horizontally opening and closing mechanisms. This horizontal mold and its opening and closing mechanism is removed relative to the injection molding machine and substituted therefor is a vertically opening and closing mold and its associated vertically opening and closing mechanisms. The hot plastic material from the horizontal injection molding machine is initially constrained in movement horizontally but subsequently vertically into the cavity of the vertically opening mold.

Abstract: Relatively thin (e.g., thickness of less than about 2.5 mm, and typically no greater than about 1.0 mm) plates for synthetic fiber-forming spin packs include a first metal layer exhibiting a relatively slow photochemical etching property and a second metal layer exhibiting a relatively fast photochemical etching property which are adhered (laminated) to one another to form a composite substrate structure. The differential etch rates as between the first and second metal layers permit relatively dimensionally larger distribution channels and relatively dimensionally precise through holes to be formed in the composite substrate. In this regard, the second metal layer permits the formation via photochemical etching of dimensionally deeper and/or wider polymer distribution channels. The first metal layer, on the other hand, allows for the formation of relatively dimensionally precise through holes via concurrent (simultaneous) etching with the second metal layer.

Abstract: A combination of displacement mechanisms adaptive for positioning a stationary platen to a frame, permitting the stationary platen to be displaced toward an injection unit to allow an escaping extension of tie-rods in a mold clamp action, is operative to displace the same toward the injection unit for a maintenance service, so that it can be displaced toward the injection unit further from a molding position in a molding operation.

Abstract: A mold base kit including plural plates having alignment bores for receiving guide dowels for accurately aligning the plates with respect to one another as a mold frame is assembled from the kit. Each guide dowel includes a hollow, cylindrical sleeve sized to fit snugly in the alignment bores of adjacent, abutting plates and also includes an abutment member extending radially outwardly of the guide dowel sleeve intermediate its ends which prevents the guide dowel from moving a substantial distance along an alignment bore. The abutment member may be formed by a circular piece of spring wire which extends through an arc of more than 180.degree. around the outside of the dowel sleeve, and preferably approximately 270.degree. around the sleeve. Because the retainer clip extends less than completely around the sleeve, its ends can readily be spread apart for assembly of the retainer clip onto the sleeve.

Abstract: The present invention relates to an apparatus for forming semiconductor chip packages which is able to compensate for the flatness of substrates and the true straightness of edges of substrates, which substrates are inserted in molds in a forming process of semiconductor chip packages. According to the present invention, the semiconductor package strips excellent in surface flatness and side straightness of a substrate can be manufactured, because the thickness deviation and the side nonuniformity of a substrate can be compensated for in the resin molding process of the semiconductor package by use of a forming apparatus which comprises the individual cavity blocks, elastically mounted so as to float up and down, and the elastic pressing members, mounted on one end of the upper and lower chases.

Abstract: An injection mold for forming a pattern for use in investment casting having mold sections carrying two pattern-forming surfaces and a translatable third pattern-forming element movable on a mold section. The mold also includes an inner core. Parting lines are located at inconspicuous locations by sizing and shaping the mold sections. The method of use of the injection mold includes employing an arrangement for facilitating lower mold section and for raising the inner core to facilitate its removal.

Abstract: An apparatus for evenly distributing forces around a die mounted to an extruder barrel includes a barrel flange mounted around the extruder barrel, the barrel flange providing a flange sealing face and a first angular cam surface, and a die adapter for carrying the die, the die adapter providing an adapter sealing face that opposes the flange sealing face, and a second angular cam surface. The apparatus further includes a pair of opposed clamshells each with a semi-circle opening and a lock channel facing each other, each lock channel having angled cam surfaces facing the first and second angular cam surfaces.

Abstract: A guiding mechanism and method are provided for properly aligning molds or portions thereof, such as ejector plates, as they are cycled. The guiding mechanism is an improvement over conventional bushings which require that the mold in which the bushings are mounted to be removed from the press and disassembled and thereafter, the press fitted bushings are pressed out. Herein, the bushings are provided with a replaceable insert or portion that is easily disconnected from the remainder of the bushing such as by unthreading a threaded insert from a threaded bushing body without removing the mold half from the press. A first replaceable insert can be mounted in the bushing body which is sized to receive the leader pin to guide the leader pins therein and align the mold halves as they are moved to the closed position.

Abstract: A gate portion constituting a gate of a resin molding die is made of a hard alloy having a hardness greater than the predetermined hardness in the iron-based hard alloy used to from a cavity block and a center block. Opposing surfaces of the cavity block halves include a silicone rubber layer at least at the portions thereof which contact portions of the lead frame in a semiconductor encapsulation molding apparatus.

Abstract: A device for encapsulating a plurality of semiconductor die comprises a form having first and second halves such that as the first half contacts the second half the first and second halves have a plurality of cavities therein. The first and second halves each comprise a conduit therein for receiving a heated liquid. The device further comprises a runner block having a hole therein, a separate runner for each cavity, and a conduit therein for receiving a heated liquid. The runners have a rectangular cross section and a width to height ratio of at least 3:1. The device further comprises a mounting plate for mating with the runner block. The mounting plate comprises a concave recess and a hole in the mounting plate at the recess. The hole in the mounting plate passes through the mounting plate to align with the hole in the runner block such that an encapsulation material can be passed between the mounting plate and the runner block.

Abstract: A molten strand feeding device having a strand cutting apparatus. In the device, a movable unit is placed at the upper end of a cooling trough so that it is movable linearly in a direction parallel to the nozzle surface thus improving the strand cutting effect at the very beginning of the molten strand emerging from nozzles. The cooling trough is coupled to a hinged joint at the rear center and is selectively rotatable relative to the nozzle surface so that the device is selectively changed between the horizontal and vertical types. A spring-biased strand cutting apparatus is provided at the upper end of the movable unit so that the cutting apparatus is brought into close contact with the nozzle surface and smoothly moves on the nozzle surface without giving an impact on the nozzle surface, thus improving the strand cutting effect.

Abstract: A frame for a die casting machine, including a first side, a second side, a toggle endpiece and a die endpiece opposite the toggle endpiece, one of the first and second sides having an upper frame member with a die end and a toggle end, the die end being releasably secured to the die endpiece, and a lower frame member integrally joined to the die endpiece and the toggle endpiece, the other of the first and second sides having upper and lower frame members integrally joined to the die and toggle endpieces.