Abstract: An insert is held in a cavity within a die set by a movable hold member. Molten resin is injected into the cavity when the insert is held by the hold member. The hold member is separated from the insert at a given timing. A surface of the hold member is heated to a temperature higher than a temperature of an inner surface of the die set. The hold-member surface contacts the molten resin. The die-set inner surface is exposed in the cavity.

Abstract: This invention relates to a mold design, injection molding machine and a method for forming a multi-layer plastic article by over molding where the second layer of the article includes a portion having a different geometrical profile than the first one. The novel injection mold and injection molding machine for producing over-molded articles comprises an array of one or more cores which engage arrays of one or more first cavity and arrays of one or more composite cavities. Each composite cavity is formed from the combination of a second cavity and a cavity extension which carries at least a portion of the different geometrical profile, such as a thread. In one embodiment, the cavity extension comprises a pair of cavity portions which are mounted adjacent the core to laterally moveable slides on a movable plate, that can be a stripper plate.

Abstract: The present invention relates to a seal pin indexed precisely in a resin transfer molding die to assure the desired resin-to-fiber ratio in the mold part, and, thereby, to produce reliably and consistently a part of minimum weight with adequate strength. The index/resin seal pin of the present invention for RTM mold dies is novel in that it provides the seal (via replaceable O-rings) on the threaded stem of the pin to prevent low viscosity resin from invading the threads, bolts pins, or other elements of the internal mandrel. The pin allows the entire inner mandrel to be enclosed and sealed within the mold cavity, simplifying the sealing system. The invention also relates to a method for using the seal pin in a resin transfer molding process.

Abstract: A fabrication method and forming mold for multi-fiber optical connector ferrules uses X-ray LIGA technology to integrally form a plurality of fiber bores and guide bores in an aligning mold in an array manner with great precision of bores size and alignment positions. Then a plurality of fiber pins and guide pins are engaged with the fiber bores and guide bores to form the mold core. The mold core is then housed between a pair of side walls and an upper mold and a lower mold for injection molding process. The ferrules thus may be produced with great precision.

Abstract: A single piece battery jaw and method and apparatus for producing the same employs a stack molding type machine with material injection from the platens. The apparatus can effectively injection mold a one-piece jar with a straight side wall or an undercut side wall. Zero draft capability is also provided. The apparatus also includes an extraction device and core stabilizers.

Abstract: A injection molding device for manufacturing golf balls is disclosed. The device includes first and second hemispherical mold halves that form an interior cavity where the injection molding process occurs. A plurality of retractable pins are preferably used to support a core within the mold cavity. The first and second mold halves further include a plurality of subgates. The subgates are connected to a runner system for delivery of a fluid stock material into the void of the cavity. The plurality of subgates includes a first and second set of subgates. The first set of subgates and the second set of subgates enter the respective cavities at an angle between 30 and 40 degrees to the parting line.

Abstract: A method of forming a number of air vent holes in a rear case of a liquid crystal flat plate display (LCD) monitor and an apparatus therefor. The method includes forming a number of air vent holes on an incline plane of the rear case using a first metal mold and a second metal mold, such that pin holes are formed in the first metal mold and protrusion pins are installed in the second mold so as to be respectively inserted into the pin holes, to form respective air vent holes. The molding is performed in a state that the protrusion pins are inserted into the respective pin holes during injection of a solution which forms the rear case.

Abstract: A process for the hot moulding of articles (L) made of thermoplastic material, comprising the steps of:

Abstract: An insert for a mold comprising a plug, having an insert face, and a receiver defined by a sidewall with one of the plug and the receiver having a groove that receives a guide that extends from the other of the plug and the receiver so as to facilitate rotation of the plug while opposing withdrawal of the plug. In one preferred embodiment, the groove has an inclined entranceway, that facilitates plug insertion and removal, and a transverse portion and extends circumferentially no more than about one and one-quarter rotation about the plug. In another embodiment, the guide is resiliently urged outwardly from the plug to ride in a groove in the sidewall and the sidewall has an access port for prying free the plug from the receiver. A detent assembly comprised of notches on the plug and a detent carried by the receiver permit the plug to be selectively indexed. The insert can be mounted to or carried by an ejector pin having a head constructed and arranged to prevent rotation of the pin during mold operation.

Abstract: A mould for forming a cap having a cylindrical skirt, the skirt being provided with at least one screw thread, a top and a tamper-proof ring linked to the free end of the skirt by breakable linking elements includes a movable part or mould top, a stripping part or stripper ring and a core. The stripper ring has, on the side facing the top of the mould, on the lower edge of the skirt and in at least two separate places, at least one notch or at least one projection so as to create a mortise-and-tenon linkage between the skirt and the stripper ring during moulding and demoulding of the cap.

Abstract: A mold for forming a dielectric housing for a card edge connector, wherein the housing has an elongated body defining a central slot for receiving a lower edge of a memory module. The elongated body has two lateral ends each formed with a tower for pivotably receiving an ejector for latching or ejecting the memory module received by the connector. A number of contact passageways are defined beside the slot for receiving a number of contacts therein for electrically engaging with golden fingers on the lower edge of the memory module. The mold has a gate located proximate to a lateral end face of one of the towers of the housing to be formed by the mold, and a number of core pins in the cavity for forming the contact passageways. The core pins located nearest to the gate have a cross section larger than that of the other core pins so that they are strong enough to withstand a fluctuation of a high pressure for injecting molten plastics into the mold.

Abstract: A mold apparatus for forming a pair of mutually opposing guide walls respectively disposed and erected on an upper surface of a half-case of a magnetic tape cassette. The mold apparatus is divided into a third mold and a second mold, and the guide walls to be molded form the boundary between the third and second molds. After injecting resin into the mold apparatus in order to mold the guide walls, the second mold of the mold apparatus is firstly removed in the guide wall erected direction. Then, the third mold of the mold is removed in the same direction, while a distance between the formed guide walls is enlarged by elastic deformation resulting from contact between the guide walls and the third mold.

Abstract: An articulated mold cavity is disclosed for injection molding a dispensing cap including a substantially hollow body adapted for attachment to a receptacle. The body includes an open first end shaped and dimensioned for coupling to the receptacle, a side wall and a substantially closed second end including a dispensing opening formed therein. The cap also includes a closure integrally formed with the body. The closure is pivotally formed to move between a closed position in which the closure covers the dispensing opening so as to prevent the flow of material through the dispensing opening and an open position in which the closure is removed from the dispensing opening to permit the flow of material through the dispensing opening. The mold cavity includes a stationary half supporting a plurality of moveable molding plates defining a moveable half of the mold cavity. The stationary half and the moveable half define therebetween a cavity in which the molded product is defined.

Abstract: An injection mold for molding a spool with flanges at both ends of a shaft such that the inner wall surfaces of the flanges are not flawed, and the dimension between the flange inner wall surfaces is uniform and thus the flange inner wall surfaces are free from distortion, and further the cooling time is short and hence the molding cycle can be shortened. Two mold members for molding the outer periphery of the shaft of the spool and the inner wall surfaces of the flanges are formed of a material having relatively low thermal conductivity. A pair of mold members for molding the outer wall surfaces of the flanges are formed of a material having relatively high thermal conductivity at least at portions thereof that mold the outer wall surfaces of the flanges.

Abstract: An apparatus for injection molding of a fiber optic ferrule including the use of adjustable core and receiver members to precisely locate a core pin and also a projecting wire member in a mold where the core pin defines an interior passage in the molded ferrule and the projecting wire forms a small diameter longitudinal hole in the ferrule communicating with an outer end of the interior passage so that the interior passage and small diameter hole are precisely located relative to the body of the molded ferrule.

Abstract: A molding apparatus includes a core (3) and a female mold member (4) as well as wraparound peripheral dies (7), which are attached to the core for movement in a closing direction and completely surround the core (3). In the region of the impact areas of the peripheral dies (7) upon the female mold member (4), the impacting surfaces are configured complementary, for example planar. Each peripheral die (7) is attached laterally to the core by at least one spacer and retaining element (8, 10), with the spacer element (8) having a width which is slightly greater than a cross section of the peripheral die, so that a small gap (9) is formed between confronting surfaces of the peripheral dies and the core. The fixed tolerance gap offers the advantage that constant, minimum frictional conditions exist. The lateral attachment facilitates the replacement of individual peripheral dies (7) and temperature-based dimensional changes of the core (3) are followed by the peripheral dies, without risk of jamming.

Abstract: An injection-molding apparatus for molding containers made of thermoplastic material for fluid products, is of the type that comprises a frame for supporting a mold constituted by a female mold part and a corresponding male plug which can be coupled axially, an interspace for molding at least one container being formed between the female mold part and the male plug, a feeding circuit for feeding the thermoplastic material which is associated with the mold and is provided with an injection device for injecting the material into the interspace, a circuit for cooling the mold for the setting of the injected material so as to obtain the container, and automatic centering elements for centering the male plug with respect to the female mold part, which are associated with the mold and operate alternatively.

Abstract: Disclosed herein are a resin pipe, a process for production thereof, a base for a photosensitive drum, and a photosensitive drum formed from said base, said photosensitive drum being used for electrophotographic apparatus such as copying machines, facsimiles, and printers. The base has a tapered inner surface with a specific taper angle (&thgr;). The base also has a projection formed at a specific position. The base is formed from a specific molding material.

Abstract: A method and apparatus for injection molding of a fiber optic ferrule including the use of adjustable core and receiver members adjustable from the exterior of the mold to precisely locate a projecting wire member in a mold where a score pin defines an interior passage in the molded ferrule and the projecting wire forms a small diameter longitudinal hole in the ferrule communicating with an outer end of the interior passage so that the interior passage and small diameter hole are precisely located relative to the body of the molded ferrule.

Abstract: A molding and tentatively retaining mold 10 of the invention has a plurality of molds which are relatively movable with respect to a fixed mold, and molds a housing 31 and rear holders 32 and 33, which are respectively independent, in a plurality of cavities formed in cooperation with the fixed mold. Diameters of runners serving as channels for the charging of a resin material into cavities of a molding and tentatively retaining mold are set for the respective cavities such that the charging of the resin material into the cavities is completed substantially at the same time.

Abstract: A mold structure for molding a circuitry comprises a cavity to which a plurality of bus bars are juxtaposedly inserted provided with gap portions to which a resin material to be injected therethrough; and a plurality of holder pins provided on the respective gap portions and arranged alternatively in the juxtaposition direction of the plural bus bars to hold the respective bus bar to be inserted therebetween.

Abstract: A mold assembly for making a multilayer molded article comprising: a first mold; a second mold; a shut-off pin slidably received in a resin-supplying gate opened to a cavity face of the first mold; a pin-driving unit for moving the shut-off pin among an opening position, a closing position and a projecting position; a resin-supplying unit for supplying a molten thermoplastic resin from said resin-supplying gate; and a press unit for moving the molds between an open position and a closed position.

Abstract: A method and an apparatus are disclosed for producing plastic objects with solid regions and hollow regions. The method has the following steps: a) blocking off a part of the cavity (2) of a molding tool (1), so that little or no plastic melt can reach the blocked-off region (8); b) injecting plastic melt into the unblocked region (9) of the cavity (2) of the molding tool (1); c) releasing the blockage, so that plastic melt can reach the previously blocked-off region (8) of the cavity (2); d) injecting a pressurized gas into the melt by means of at least one fluid injection nozzle (7), so that the melt injected into the molding tool is distributed into the desired regions of the cavity (2) while forming a hollow space and is pressed against the cavity walls of the molding tool (1); e) allowing the molded part (6) to cool; f) relieving the cavity (2) of the pressure of the pressurized fluid; and g) demolding the molded part.

Abstract: In a molded element containing therein a horizontally disposed bore, the improvement comprising: a plurality of downwardly disposed first elements having distal ends, and being spaced apart from one another, and a plurality of upwardly disposed second elements having distal ends and being spaced apart from one another, wherein the plurality of first elements are offset from the plurality of second elements, whereby a horizontally disposed bore is formed by the distal ends of the plurality of first elements and the distal ends of the plurality of second elements.

Abstract: A method of manufacturing a film-covered article by the following steps. A thermoplastic film is heated to become pliable. The film has a decorative surface and a backing surface. The heated film is positioned between an open mold. The open mold has a first mold surface, a sealing surface and a sealing member. The sealing surface contacts the sealing member and forms a chamber between the mold and the film. A fluid pressure is applied between the mold and the film to cause the film to conform to the first mold surface. A molten resin is injected adjacent to the film-backing surface to form the film-covered article. The invention may be practiced by either applying a positive pressure to push the film to conform to the first mold surface or a negative pressure to drawing the film against a vacuum between the film and the first mold surface.

Abstract: Apparatus and a method for injection molding large container lids of the type having threads for screwing the lids onto and off large containers. The apparatus includes an injection mold having a cavity mold portion and a core mold portion which together define the shape of the lid. The core mold portion includes a stationary annular ring that defines the lid threads. A co-axial, rotatable center section of the core mold portion is opened to spin the molded lid off the core mold portion and release it from the mold.

Abstract: The present invention provides a method and apparatus for molding and assembling resin parts to produce a resin product, particularly, a resin product that includes relatively moveable functional parts, such as gears, in a manner that enables one by one parts molding and assembling and also enables reduction of manufacturing cost of the resin product.

Abstract: The present invention is directed to the formation of a golf ball layer by injection molding the layer material into the mold cavity through a ring gate. After the golf ball core is securely positioned within an injection mold, layer material from at least one primary runner is introduced into a secondary runner that extends substantially around the mold cavity. The secondary runner fills with layer material until pressure within the secondary runner causes the layer material to be injected into the mold cavity through the ring gate. Injection of layer material continues until the mold cavity is completely filled. The layer material then cools and the ball is removed from the mold.

Abstract: This invention relates to a process for production of shaft passages in a molded plastic part, a mold, and the use of the process of production in, for example, a flap device particularly for a feed system for internal combustion engines, characterized in that it consists of: providing a recess by the advance of a slide of the molding tool between two adjacent bearings each associated with sites of different moving parts, and forming a bearing portion on each side of the sites of each moving part by a moving wedge relative to a slide, whereby the wedge carries a pin that is intended to form a bearing portion of one side of the moving part.

Abstract: In a die-casting slide fastener slider having a plastically deformable, cantilevered pull-tab attaching lug on a slider body, the lug projects from an upper end of a guide post over an upper wing toward a rear end of the upper wing and terminates in a downward end projection spaced from the upper wing by a gap through which an attachment ring of a pull tab is threaded. The lug has a longitudinal hollow through its base to facilitate plastically deforming the lug to reduce the size of the gap after threading. In this structure, since first and second slide cores of a mold for die-casting the slide fastener slider can be inserted from the front and rear sides, it is possible to mold the lug without generating any parting line on its overall appearance.

Abstract: A molding die for molding a magnetic tape cartridge case in which an electronic part for exchanging a signal with the outside via contacts is incorporated as the need arises is such that a molding die portion for use in molding openings for exposing the contacts of the electronic part is constituted of two kinds of inserts which are alternatively attachable to the molding die proper; and a first insert is used to form openings for exposing the contacts, whereas a second insert is used to shut the openings for exposing the contacts.

Abstract: In a method of manufacturing a gear case comprising two support cylinders inclined relative to each other, a movable mold is arranged to be movable between an open position and a closed position in which a cavity for molding the gear case is defined between fixed and movable molds. First and third slide cores each having a protrusion are slidably supported by the movable core such that when the movable mold is moved to the closed position, the protrusions of the first and third slide cores are inserted into the cavity. Before closing the mold, first and second case-mounting surfaces are formed on the protrusion of the first slide core, axially spaced from each other, and a third case-mounting surface is formed on the protrusion of the third slide core. With a bearing case fitted on each case-mounting surface, the mold is closed and a molten resin is injected under pressure into the space between the protrusions of the first and third slide cores and the inner wall of the cavity to form the gear case.

Abstract: A guide block assembly and associated method are provided for retaining a plurality of fiber bore forming pins and at least one guide bore forming pin in precise relation to each other during molding of a multi-fiber ferrule used in a multi-fiber connector. The assembly comprises an array of fiber bore blocks each with a fiber bore therethrough to retain a respective one of the fiber bore forming pins. At least one guide block that defines a guide bore for retaining a guide bore forming pin is assembled with the array of fiber bore blocks. Adjoining surfaces are defined between adjacent fiber bore blocks and between the guide bore blocks and the array of fiber bore blocks. The use of bores more precisely retains the pins during the molding process, and the use of blocks with adjoining surfaces allows for the machining of such surfaces to precisely establish the relationships between successive fiber bore blocks and between the array of fiber bore blocks and the guide bore blocks.

Abstract: A method of forming a reseal element through the use of a mold assembly including first and second mold plates, a shell core, a center pin, a center core, and a mold cavity having a shape corresponding to that of the reseal element and collectively defined by the first and second mold plates, the shell and center cores, and the center pin. The method comprises the initial step of injecting a quantity of a moldable material into the mold cavity to form the reseal element. Air is then infused between the shell core and the center pin into the mold cavity to dislodge the reseal element from the shell core and the center pin. Thereafter, the center core is retracted from the reseal element to define a gap therebetween, with the second plate then being retracted from over the reseal element to expose the same. The first plate is then advanced toward the second plate to remove the reseal element from upon the shell core and the center pin.

Abstract: A movable mold is movable toward and away from a fixed mold so as to close and open the mold. The fixed mold includes an intermediate plate facing a movable-side mold plate. This intermediate plate has a retainer-molding recess which cooperates with the movable-side mold plate to form a retainer-molding cavity, and a core pin, which cooperates with a housing-molding recess to form a housing-molding cavity, is mounted on the intermediate plate. A retainer, molded in the molding cavity, is moved downward by an ejector pin into a position where the retainer is disposed coaxial with a housing. Then, the two molds are again closed together, so that the housing and the retainer are connected together, and then this assembled product is taken out.

Abstract: A process for producing closed or open hollow parts of molded synthetic resin material in which a core (12) or mold body which extends into the mold cavity and is attached to a form element and supported on other form elements is situated between two mold half-shells. The core is supported by one or more movable stops (13-18) which can be retracted from the mold cavity. Plastic is injected into the mold via a first injection channel (22) with the core retained in position by the stops (13-18). Subsequently the retaining stops (13-18) are retracted and the mold cavity is completely filled via a second injection channel (23, 24, 25).

Abstract: The present invention relates to an apparatus that forms a polymeric structure. The apparatus has a mold plate, a circular trench, a male and female interconnect, a vertical gap filler, and a cylinder. The mold plate has a predetermined geometric design. The circular trench is in the mold plate and the difference between the outer diameter and the inner diameter of the circular trench is a distance D. The male interconnect and the female interconnect are interspaced between each other. Each interconnect rotates within the circular trench and has a base and an interconnection portion. Each base has a width D and slidably mates to the mold plate. Each interconnect portion has a minimum width W which is less than D. The male interconnect portion protrudes downwards relatively from its base to a distance P, likewise the female interconnect portion protrudes upwards relatively from its base to a distance P. The vertical gap filler aligns with the circular trench and has a foundation and an extension.

Abstract: A process for producing a thermoplastic resin hollow molded article is disclosed. The process takes place in a molding machine including first and second mold halves having respective mold surfaces defining a mold cavity. At least one of the mold halves is movable relative to the other mold half to permit the mold surfaces to be moved both towards and away from each other between closed state and unclosed states. At least the first mold half has incorporated therein at least one slidable block defining a portion of the mold surface of the first mold half. According to the process, thermoplastic resin is supplied in a molten state between the mold surfaces while the mold halves are in the unclosed state, and at least one of the mold halves is moved relative to the other mold half to press and spread the thermoplastic resin so that the cavity is filled with the thermoplastic resin. During the process, compressed gas is supplied into the thermoplastic resin located in the cavity.

Abstract: The invention relates to an ejector pin receivable in a mold part of a mold for encapsulating electronic components mounted on a carrier, wherein the substantially cylindrical ejector pin is provided with a side wall in which at least one recess is arranged close to the end which makes contact with the product for ejecting. The invention also relates to a mold part in which an opening is arranged for guiding an ejector pin, wherein at least one recess is arranged in the wall of the opening. The invention further includes a mold for encapsulating electronic components, in addition to a method for sealing an interspace between an ejector pin and an opening in a mold part.

Abstract: A method for forming a molded grommet using a device which includes a fixed mold and a movable mold, the latter having three positions. The first is a closed position, wherein the two molds are adjacent each other with a middle plate between them. Second, there is an intermediate position in which the middle plate and movable mold are spaced apart from the fixed mold. Third, there is an open position, wherein the movable mold is spaced further from the fixed mold than the middle plate. A core is fixed to the movable mold and, when in the closed position; the two molds, the core, and the edge of the middle plate define the molding space into which moldable resin is introduced, thereby forming the grommet with the edge within the channel. As the core moves from the intermediate position to the open position, the middle plate is retained in the intermediate position; therefore, the core is pulled out of the grommet through the axial hollow therein.

Abstract: A mould (14) for manufacturing an article of footwear comprises two mould halves (16); a hollow last (20) which includes a cylindrical downwardly open opening (30) at its foot end (26); and a first sole plate (34) which includes a projection (32) having a head portion (36) which is arranged to extend into the opening (30) in the last (20) in order to restrict movement of the last within the mould. Polyurethane is injected into cavity (44) defined between the last and mould halves (16)/sole plate (34) to form an inner sole of an article of footwear having a hole in it in a position where projection (32) cooperated with opening (30). This opening may then be plugged prior to the formation of an outer sole using a second sole plate (which does not include a projection (32) instead of the first sole plate.

Abstract: A method and mold and assembly for use in the mold are provided to make plastic articles having reduced surface defects wherein gases and/or volatiles normally trapped at at least one surface of the article are absorbed by at least one porous part to degas the at least one surface. In one embodiment, first and second porous parts such as porous metal parts can be fit within the first and second mold halves, respectively, to degas opposite surfaces of the article while preventing the passage of plastic from the article-defining cavity in the closed position of the mold. In a second embodiment, a sintered metal plug is utilized to locally degas a single surface of the article. In a third embodiment, an ejector pin and a core pin are formed from sintered metal to degas spaced local surfaces on the same side of the article.

Abstract: A hot runner system, in particular a heatable injection nozzle for an injection molding machine or plastics injection mold, includes a central heating rod having opposite ends and defining a longitudinal axis, a sleeve assembly which surrounds the heating rod and is split radially to define first and second sleeves abutting one another, and current-conducting means for feeding an electric current to the sleeve assembly. The heating rod is electrically connected with each end of the sleeve assembly. One of the sleeves is formed at the interface to the other sleeve with a flange which extends substantially parallel to the longitudinal axis and forms at least one flow passageway for melt, whereby the flow passageway is bounded along its entire length by a wall surface made entirely of metal.

Abstract: The encapsulated transducer (10) includes an injection molded encapsulation (20) having a front end (22) and a back end (24). The encapsulation (20) ensconces a sensing element (40) proximate the front end (22) and a portion of a cable (60) which extends from the back end (24). The sensing element or coil (40) is electrically and mechanically connected to the cable (60) by a pair of suitably sized front and rear ferrules (80), (90) secured to a center and coaxial conductor (66), (70) of the associated cable (60) thereby forming a coil and cable assembly (110). At least the rear ferrule (90) includes a shoulder (100) for firmly anchoring the coil and cable assembly (110) within the encapsulation (20). In addition an injection molding process provides the durable encapsulation (20) which bonds with a dielectric (68) of the cable (60) and symmetrically locks the coil and cable assembly (110) therein.

Abstract: The present invention is directed to a retractable sleeve for a golf ball injection mold for forming a golf ball cover or intermediate layers of a golf ball. The retractable sleeves engage with a golf ball core to securely position the core within the injection mold and may be used to strike the golf ball out of the mold cavity after the injection molding process is completed. The faces of the retractable sleeves may be shaped to conform to the curvature and texture of the cavity wall of the golf ball mold.

Abstract: A method of ferrules used in an optical connector for connection and short-circuit of making multichannel optical signals. Heretofore, many fiber receiving holes have been arranged along a line at regular intervals with tolerance amounting to less than 1 micron. 10 and connect two ferrules, a precisely processed cylindrical metal guide pin under 1 micron, precise pitches formed in ferrules and a metal pin guide hole are used, Consequently, it has been necessary to maintain a high degree of precision. The present invention maintains a high degree of precision by reverse direction connection dependent merely on a predetermined height a reference plane. The reference plane is formed by relatively easy plane processing as the method of maintaining precise height and directivity of flow is added to the inside of a mold.

Abstract: A side-action mechanism is provided for forming recesses or apertures in injection molded plastic parts and which includes a slide carrier and a driver actuator therefor which are part of a modular side-action cam unit that can be attached entirely into one mold half, e.g., the core half, so as to avoid having to machine and customize the other mold half or cavity half as with prior side-action devices. In addition, the modular side-action cam unit provides a driving surface that is preferably flat which engages the bottom flat of the cavity half to obviate the alignment problems which can occur in the prior angled cam pin side-action mechanisms. The present modular cam unit is a small unit and does not take as long to install into the mold as the prior side-action cam mechanisms which required installing parts in both the cavity and core halves of the mold.

Abstract: In an auto-lock slide fastener slider composed of four members, i.e., a slider body, a pull tab, a locking and a cover, the slider body has front and rear resilient cover-attachment projections extending from an upper wing and terminating respectively in outwardly directed hooks while the cover is made of thermoplastic resin and has on respective inner edges of front and rear end walls corresponding inwardly directed hook portions resiliently engaged with the hooks of the cover-attachment projections. The cover can be attached to the slider body simply in a single snap action. Since all parts of the attaching mechanism are concealed by the cover, the resulting slider is neat in appearance.

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: A transfer/injection molding apparatus is defined that includes a charge forming unit, a molding unit and a charge overflow unit. The charge is formed so that the fibers therein are randomly oriented in substantially parallel horizontal planes such that they are always substantially parallel to the direction of initial flow into the cavity of the molding unit. Excess charge from the cavity is forced into the charge overflow unit, which is selectively located in an area where surface finish is less critical. The excess charge displaces an overflow pin, which is kept upwardly biased, under molding pressure, to be flush with the lower inside wall of the molding unit cavity.