Abstract: A manufacturing apparatus for multi-fiber optical ferrule includes a spacer whose hardness is equivalent to or higher than the hardness of pins for forming fiber holes. Further, corner portions with respect to the arrangement direction of the pins for forming fiber holes of the spacer are formed as inclined surfaces or rounded surfaces.

Abstract: A plunger rod for a syringe in is of integrally injection molded plastic construction having an elongated body with a coaxial end portion. An external thread extends around the end portion for threaded receipt into a plunger tip that is slidably received in a syringe barrel. A flat extends chordally across the end portion of the rod body interrupting the external thread. The plastic, of which the plunger rod is molded, is gated into the mold for the plunger rod at the flat that extends across the rod end portion, leaving a gate mark or vestige on the flat. Gating of the plastic material into the portion of the mold that forms the threaded end portion of the plunger rod achieves improved flow and improved filling of the external thread, while employing a simple and economical mold construction. The gate vestige does not interfere with threading of the plunger rod end portion into the plunger tip.

Abstract: In a mold device for injection molding of synthetic resin having a cavity surface alternately heated and cooled and a bottoming structure for producing a product having a bored portion like a window, a bottoming portion for the production of a product having a bored portion is provided on a parting surface of the mold and a vacant space is provided in the bottoming portion. Thus, the contact area of the bottoming portion is reduced and a contact pressure of the bottoming portion and thermal strain due to a temperature difference between the cavity side mold and core side mold are reduced, so that it is possible to prevent occurrence of crack in a portion located immediately outside the window of the product.

Abstract: A micro-needle is provided which is particularly useful for the minimally invasive sampling of a biological fluid and/or the minimally invasive delivery of a drug or other formulation across the skin. The micro-needle has a structure having a base at a proximal end and a vertex at a distal end, and an open lumen extending there through and through which fluid may be transferred. The structure defines a structural axis that intersects the lumenal axis defined by the open lumen. The point of intersection between these axes is at a point below the vertex of the micro-needle to provide a sharp apex at the distal end of the micro-needle and defines the general configuration of the distal end of the micro-needle, which may be selected or customized depending on the intended use of the microneedle.

Abstract: Provided with a rod (1) meant to be attached to the ejector plate (9) which extends in a flat and elastically deformable neck (2) which ends in a small header (3) provided with a material recess (4) which is adapted in shape and size to the negative (5) to be obtained, said header (3) having a basically rectangular prismatic shape, that is with faces which are parallel by pairs, in order to simplify its machining, while the diagonal length of its section is equal to or smaller than the diameter of the rod (1), allowing its assembly from the outside of the body (7) of the mold. In order to attach the rod (1) to the ejector plate (9) said rod is provided with an externally threaded segment (10) on which moves a screw (11) which allows a precision adjustment of the axial position of said rod (1), which rod in turn is immobilized in an angular sense as it has a flat facet in correspondence with one of its generator lines, on which acts a key (14).

Abstract: A method and apparatus for molding a right angle connector onto a tube end portion. The tube end portion is positioned in a mold cavity; an axially extending core is positioned in the mold cavity with the axis of the core at a right angle to the axis of the tube end portion and with an inboard end of the core positioned proximate the open end of the tube end portion; a molten plastic material is injected into the mold cavity in surrounding relation to the core and the tube end portion; and the core is removed to form a connector fixedly secured to the tube end portion and having a central axial bore communicating with the open end of the tube, extending at a right angle to the central axis of the tube end portion, and conforming to the configuration of the core.

Abstract: An adjustable core pin for molding vials for use in levels and those vials molded using the adjustable core pin are disclose. The core pin includes an elongate rod with a crest at its cross section with the greatest diameter and a rod retainer with a cavity which receives the rod such that the distal end of the rod projects from a rod retainer distal opening, the rod being adjustable in relation to the rod retainer so that the crest can be adjustably placed at a preferred position in a molding cavity for vial molding.

Abstract: A method of manufacturing a plurality of interconnected vials with a mold. The mold includes a first slide and a second slide. The method comprises contracting the first slide and the second slide so that a plurality of cavity profiles linked together by a plurality of arms is formed. A plurality of core pins is placed within the plurality of cavity profiles so that the core pins are freestanding. A plastic fluid is injected about the plurality of core pins to form a plurality of interconnected vials. The plurality of interconnected vials are removed from the plurality of core pins. The plurality of interconnected vials are placed into a holder tray and a liquid is injected into the vials. The open ends of the vials are heat sealed in order to encapsulate the plurality of interconnected vials. The steps of heat sealing include applying heat, measuring the temperature applied, and measuring the time the heat is applied.

Abstract: An injection molded component includes a plurality of integrally formed push pins that provide a simplified attachment interface for attaching the component to a vehicle structure. The injection molded component includes a base housing component with an upper and lower surfaces. Each pin extends out from the lower surface of the base housing component to a distal end. A plurality of radially extending flanges is formed about the circumference of the distal end. The flanges are spaced apart from one another and form a retention feature that is inserted into an appropriate vehicle structural component to secure the base housing component to the vehicle. The formation of flanges on the pins eliminates the need for additional injection mold tooling actions to further form the attachment interface.

Abstract: An optical connector ferrule 1A is mounted on the distal end of a fiber optic ribbon cable 2 to form an optical connector Ca. A mating surface 11 of the optical connector Ca opposes an optical connector Cb to be mated. Fiber accommodating holes 13 are formed in the mating surface 11 so as to accommodate optical fibers, and a pair of guide projections 10 are formed on the mating surface 11 so as to be positioned with the optical connector Cb. The ferrule 1A is integrally molded with a resin. This provides an optical connector ferrule allowing the easy manufacturing of an optical connector with good transmission performance.

Abstract: A monolayer foamed corrugated sleeve for protecting elongate substrates is disclosed. The sleeve is extruded from a polymer and a foaming agent. The polymer may be a non-elastomeric thermoplastic, a thermoplastic elastomer or a combination of the two. The sleeve is extruded from a nozzle having a cross sectional area which decreases along its length to maintain pressure on the extrudate and prevent premature foaming. The extrudate is released from the nozzle into moving mold blocks. A blow rod within the mold blocks provides gas pressure to force the extrudate against the blocks. An obturation device is mounted on the blow rod to control the gas pressure.

Abstract: Fluid pressure of a first fluid chamber of a driving means, which acts as a back pressure, is monitored by a monitoring means when a core pin is driven by the driving means in an inserting direction before injection of a molten material into a cavity of a die arrangement. When the monitored fluid pressure of the first fluid chamber exhibits abnormal behavior that is different from normal behavior observed during a normal period, the monitoring means controls the driving means to stop the driving of the core pin in the inserting direction.

Abstract: In a rear holder-attached connector (1), a relatively-thick protective rib (10) with a width (B) projects outwardly from opposite sides of a housing (2), and is disposed between upper and lower terminal receiving chambers (3). This width (B) is larger than a width of rear holders (20a, 20b), and this rib (10) protects the rear holders (20a, 20b) so that these rear holders, provisionally retained on the housing (2) within a metal-mold assembly, will not be discharged from the metal-mold assembly to drop, and will not be disengaged from the housing even upon contact with another housing. The provision of the protective rib (10) also serves to provide a good flow of a resin poured from the rear side of the housing (2) during the molding operation, and therefore thin partition walls, forming the terminal receiving chambers (3), can be positively molded, thereby enhancing the yield of the molded housings.

Abstract: A method of producing a bead inductor includes the steps of forming an outer portion outside of a conductor coil, and forming a molded body with the conductor coil embedded therein. The outer portion is formed outside of the conductor coil by disposing the conductor coil in a cavity defined by first and second mold portions, with first and second gates formed in the first mold portion, inserting first and second spacer pin portions, which define a spacer pin which passes through the conductor coil and extends to and closes the second gate, and supplying material containing magnetic powder into the mold cavity from the first gate. The molded body is formed by closing the first gate after the formation of the outer portion, and supplying from the second gate material containing magnetic powder into a space formed by removing the spacer pin portions.

Abstract: A helical gear is disclosed that is formed by an injection molding process in which the mold cavity is formed of mirror finished hardened stainless steel. The helical gear is disclosed in a gear box that entirely encase the gears, and may be integral with the housing of the toy. Furthermore, an “L” axle for gears is disclosed that provides a straight shaft portion that extends through the axle bearing aligned with the centerline of the gear and a bent portion that is seated in a slot recess in the wall of the gear box.

Abstract: The ferrule of the present invention comprises a ferrule main body including an insert pipe defining an outer circumferential surface of said ferrule main body and a molded plastic member disposed inside said insert pipe integrally therewith and having an optical fiber receiving bore in an axial center thereof; and a tubular base portion molded onto a rear end of the ferrule main body. Because the outer diameter of the ferrule main body is defined by the insert pipe, the rigidity, circularity and dimensional precision of the outer diameter can be improved. Because the base portion is molded separately from the ferrule main body, the manufacturing process can be simplified and the production cost can be reduced.

Abstract: An adjustable core pin, and method of use thereof, for molding vials for use in levels, including an elongate rod with a barrel-shaped distal section having a crest at its cross section with the greatest diameter and a rod retainer with a cavity which receives the rod such that the distal end of the rod projects from a rod retainer distal opening, the rod being adjustable in relation to the rod retainer so that the crest can be adjustably placed at a preferred position in a molding cavity for vial molding.

Abstract: A system for molding optical attenuators that have a lens portion and a supporting portion includes a molding machine containing a mold, an extractor robot and optical inspection portion, and a controller that assesses the inspection information and send control signals to the molding machine and mold. The mold includes a cavity and a core which define a space in which the supporting portion and the attenuator are formed. The mold also includes a core pin, movably located in the core element. The core pin has a proximal end defining a surface of the lens portion and a distal end remote from the molding space. A core pin motor is coupled to the core pin, through a number of intermediate elements, so that the core pin can be moved relative to the core element to adjust a thickness of the lens portion.

Abstract: A guide block assembly is provided for retaining fiber bore forming pins and guide pin bore forming pins in precise relation to each other during the molding of a ferrule used in a multi-fiber connection. The assembly may include a top portion and a bottom portion with corresponding fiber and guide pin bore grooves formed on a surface of the top and bottom portions. When the top and bottom portions are assembled, the corresponding fiber and guide pin bore grooves form fiber and guide pin bores, respectively. The assembly may also include another portion that form additional bores with either the top or the bottom portion. A method of fabricating and aligning the guide block assembly is also disclosed.

Abstract: A slider mechanism (1) for an injection mould comprising a core (5) which is insertable into a cavity (20) defined by mould halves (12) of the mould. The slider mechanism (1) has a body (2) which supports the core (5). The invention is characterised by a drive device (3), and a connection (4) between said body (2) and said drive device (3). The connection (4) is adapted to convert a rotary motion of the drive device (3) into a translational motion of the body (2). The invention also concerns an injection mould comprising such a slider mechanism as well as the actual slider.

Abstract: A plastic injection molding machine includes a rod having an end engaged with a slide member located beside the lower mold, and a position block connected to the upper mold. A pin is movably inserted in two respective inclined holes in the position block and the slide member so that the threaded section on the tip end of the rod is moved into the cavity with the movement of the slide member. The rod is located between two side members each have a threaded semi-circular recess. Another threaded section has the same threads of the thread section on the tip end of the rod is engaged with the two threaded semi-circular recesses so that the rod is rotatably withdrawn from the cavity smoothly when the rod is rotated by a motor.

Abstract: A mold includes a first and a second mutually joinable mold half which in their joined state define at least one cavity, and a sprue formed in the mold for conducting a melt to each cavity. The sprue includes an ingate portion connecting to each cavity and contained in a first ejector of an ejector arrangement. An injection molding assembly including such a mold is also disclosed.

Abstract: Method and apparatus for forming an article from a molten plasticized resin using an injection molding machine by (a) forming a mold cavity having a first region for producing a molded part and a second, distinctive region for receiving a plasticised resin; (b) injecting into the second region a volume of plasticized resin for the article to be formed in the first region of the mold cavity; (c) applying pressure to plasticized resin to move it at least in part from the second region to the first region; and (d) maintaining pressure on the plasticised resin in the first region until the article is formed and stresses are relieved.

Abstract: A resin encapsulation mold of the present invention comprises a lower mold, which is mounted on a lead frame, includes an indentation into which a semiconductor device is placed, and forms a gate through which resin is injected; an upper mold, in which an indentation is formed opposite the indentation of the lower mold to configure a cavity for holding the semiconductor device; a plurality of ejection pins, which protrude from the respective bottoms of the indentation of the upper mold and the indentation of the lower mold into a resin package body formed by injecting the resin from the gate into the cavity, and eject the resin package body; a vertical drive mechanism, which brings into contact and separates the upper mold and the lower mold; and protrusion adjustment means for adjusting the amount of protrusion of the respective ends of the plurality of ejection pins.

Abstract: A dispenser (10) for use in dispensing liquid or solid material. The dispenser (10) includes wall portions forming a sealed first chamber (18) containing the material and wall portions forming a second chamber (20) and a molded, rupturable membrane (34) disposed between the first chamber (18) and the second chamber (20). The rupturable membrane (34) is preferably a circular disk with a series of molded radial depressions (40) or weld seams (40) extending from a center point of the disk. When pressure is applied directly to the membrane (34), the membrane (34) is fractured along the depressions (40) or weld seams (40). A method is provided for forming the dispenser (10) by injection molding.

Abstract: The invention relates to a worm wheel for use in a reduction gear, for example, and to a machine and a method for forming the same. The worm wheel includes a tooth having a tooth crest. At least the teeth are formed by injection molding a synthetic resin. The tooth crest includes a trace formed along a parting line as a result of the injection molding process. The trace does not exist on a surface of action of the tooth. The invention is suitable for applications demanding high contact gear accuracies.

Abstract: The invention concerns in particular a mould for injection moulding of a flexible tube, said mould comprising as moulding tools, a nozzle receptacle (1), an impression (2) and a core (3), housed in a stack of plates (P4, P5, P6, P7). The invention is characterised in that said moulding tools (1, 2, 3) have pairs respective conical support surfaces (101, 201, 301, 102. 302), through which the tools are centred and aligned with one another, each support surface being formed by a portion of tools deprived of transverse mobility.

Abstract: A retainer installation through hole is formed in a connector housing by an installation hole forming pin. After molding the connector housing and a retainer, the retainer is assembled from a side opposite the side where the installation hole forming pin is extracted for the retainer installation hole. Thus, since interference of the retainer installation hole with the retainer is avoided, a mold construction can be simplified. Further, since the direction of motion of the respective parts of a mold apparatus are only in biaxial directions of up and down and transverse (X,Y axis directions), the molding spaces of a plurality of connectors can be provided in the mold apparatus along a third axis direction (fore and aft direction, namely Z axis direction) in a line. Thus, the molding and assembling of parts for many connectors can be simultaneously carried out by a single mold apparatus.

Abstract: Molding equipment and related techniques for forming a golf ball are disclosed. The golf ball comprises a core and a cover layer, wherein the cover layer provides one or more deep dimples that extend through the cover layer to and/or into a layer or component underneath are disclosed. The molding equipment provides one or more selectively positionable knock-out pins along the surface of the molding chamber. These pins are specially tailored such that after their retraction subsequent to molding, the resulting voids are deep dimples. The molding equipment and related processes are particularly useful when forming the various layers by reaction injection molding.

Abstract: The mold comprises:

Abstract: An adjustable core pin, and method of use thereof, for molding vials for use in levels, including an elongate rod with a barrel-shaped distal section having a crest at its cross section with the greatest diameter and a rod retainer with a cavity which receives the rod such that the distal end of the rod projects from a rod retainer distal opening, the rod being adjustable in relation to the rod retainer so that the crest can be adjustably placed at a preferred position in a molding cavity for vial molding.

Abstract: During injection molding of a thin-wall plastic product, such as a drink cup, the formation of void-based irregularities is prevented in a thin-wall portion of the product formed within a zone of a thin-wall cavity section that is located between adjoining flow chambers, in which zone the thickness of the thin-wall cavity section increases in the general direction of flow within the flow chambers adjoining such zone. Such void-based irregularity formation is prevented by dimensioning the mold cavity so that the thickness increases in such direction at less than a threshold rate. The flow chambers do not extend to a rim portion of the thin-wall cavity section; and the respective inscribed-sphere dimensions of the adjoining flow chambers within a terminal zone of the thin-wall cavity section adjacent a rim portion of the mold cavity are less than the respective inscribed-sphere dimensions of upstream portions of the adjoining flow chambers.

Abstract: An unscrewing mechanism for forming threaded components includes at least one rotatable elongate mold core having a threaded portion at one end for molding a threaded component, a stripper plate that is separable from a stationary plate and underlying a cavity plate in which is integrated a mating mold cavity, and a drive gear with a jack screw at one end and with gear teeth that mesh with mating gear teeth on the mold core for rotating the mold core such that a movement of the stripper plate away from the stationary plate for ejecting a formed threaded component is at the same rate as the unscrewing of the mold core. The jack screw is threaded such that a riser component pushes the stripper plate at the same rate that the mold core is unscrewing.

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. When rear holders 32 and 33 after molding are relatively moved with respect to a housing 31 by movable molds 12 and 15 and are tentatively retained, a runner 20 for a cavity for molding the housing 31 is kept connected to the housing 31 through a tunnel gate 20a. In addition, a portion 15a of the fourth movable mold 15 for forming the cavity in the housing 31 is kept fitted to the housing 31 as it was during molding.

Abstract: Specially conceived for slides (1) which run along a track (2), having a housing (4) which is slanted in relation to the said track, a housing in which a guide (3) operates, also slanted, in a way that during the entrance of the guide, the slide (1) moves in one direction on the track (2) and on exiting it does so in the opposite direction, the retainer consists of a rod (5) which is housed in an orifice (6) of the slide perpendicular to the track (2) and which lines up with a blind orifice (10) on the track, precisely at the moment when the guide (3) exits the slide (1), the rod being aided by a spring (11) which tends to cause it to protrude constantly on the track (2) and against whose spring operates a rocker arm (14) which, also tending to enter the housing (4) of the slide, is activated by the same guide (3) when it is located in the housing of the slide.

Abstract: An injection moulding apparatus for hollow parts comprises first and second co-operating dies, each die including a first male die core and a female die recess. One of the dies is rotatable about an axis. In a first angular position of the rotatable die, the male die core of the first die co-operates with the female die recess of the second die and the male die core of the second die co-operates with the female die recess of the first die, to define first and second moulds in which half-components may be formed. In a second angular position of the rotatable die, the respective female dies recesses of the first and second dies co-operate to form a third mould in which the half-components may be joined. The apparatus makes use of a single injector differentially controlled for each stage.

Abstract: Post-mold cooling of injection molded plastic articles such as preforms is achieved by transferring the articles directly from the mold cavities onto cooling cores carried by a take-out plate. The molded articles are supported on the cooling cores until they become sufficiently frozen that they can be stripped from the cores.

Abstract: Injection molding system for molding a molded article and method for forming same, including a mold cavity for forming the molded article, wherein the mold cavity is defined at least in part by a mold core defining inner walls of the molded article, a first insert defining at least outer side walls of the molded article, and a second insert defining an outer wall of a neck of the molded article. In addition, a cavity plate at least partly surrounds the first insert and a cavity flange retains the first insert in the cavity plate.

Abstract: A molding device is provided for molding a blower fan that has a center member embedded in a center portion of the fan. The molding device comprises a pair of molding dies which define therebetween a shaped cavity when properly coupled; and an insert die fixed to one of the pair of molding dies in such a manner that at least a part of the insert die is exposed to a shaped cavity that is produced when the molding dies are coupled. The insert die includes a base block secured to one of the pair of molding dies; a cylindrical holding bore defined by the base block; a plurality of cylindrical eccentric members having eccentric through bores whose eccentric degrees are different from one another, each eccentric member being sized to be intimately received in the cylindrical holding bore; a positioning structure that establishes angular positioning of the cylindrical eccentric members.

Abstract: An apparatus for injection molding multi-colored plastic lures, utilizing an openable mold into which a mold mandrel is pivotally inserted between a pair of mold plates. A separator bar is selectively positioned between an injection and a joining position. In the injection position the separator bar separates an adjacent and a successive element of a multi-element cavity permitting communication of a selected plastic source with an adjacent element, while preventing communication with a successive element. In a joining position the separator bar permits communication between the adjacent element and the successive element, while preventing communication with the selected plastic source. Pivotally inserted, axially extensible mandrels define an inner article form and extract the formed lures from the mold cavities when the process is completed.

Abstract: A mold for producing a product with internal flutes is provided. The mold includes a mold body that defines a cavity and a shaft in proximity to the cavity. A pin assembly is receivably engaged in the shaft of the mold body. The pin assembly includes a pin with a grooved portion that has at least one helically shaped groove, a sleeve surroundingly disposed about a portion of the pin, and means to allow rotation of the pin. A gap is defined in between a portion of the walls of the shaft of the mold body and the grooved portion of the pin and the gap is partially terminated by a portion of the sleeve. A method of molding is also provided.

Abstract: The invention provides a method and apparatus for injection moulding a plastics article having thin and thick wall sections (14; 15). A quantity of molten plastics material (19) is introduced sufficient to fill the mould cavity, followed by a further quantity of molten plastics material sufficient to pack at least the portion or portions of the mould cavity in which the thin wall section or sections (14) are formed. Pressurized fluid is introduced through the or each fluid injection member to penetrate the plastics material whereby a fluid-filled void (20) is formed within the plastics material adjacent to the inner end of the fluid injecting member, and fluid pressure is maintained within the or each void so that the void expands in response to the shrinkage of the immediately surrounding plastics material, during cooling, until the plastics material is self-supporting.

Abstract: A mold assembly for a container closure includes a mold portion with a stripper ring adapted for engaging a shoulder of the closure, and a threaded core having an external, asymmetrical helical thread defining an internal, asymmetrical helical thread of the closure. The external, asymmetrical helical thread has a ramped surface defining a ramped surface of the internal, asymmetrical helical thread. Relative linear movement between the stripper ring and the threaded core causes withdrawal of the threaded core from the closure in a linear direction. The ramped surfaces of the internal and external, asymmetrical helical threads cooperate to facilitate the withdrawal.

Abstract: A plastic ferrule including a centering section having a tubular body. The tubular body is provided with an outer-circumferential centering reference surface and a center axis of the centering reference surface. The centering section includes a resinous outer tube part having the outer-circumferential centering reference surface and provided, along the center axis, with a coated-fiber holding bore for securely accommodating a coated optical fiber and a fixing bore extending from the coated-fiber holding bore, the outer tube part forming a tubular wall with a generally uniform thickness as a whole. The centering section also includes an inner tube part fixed to the fixing bore of the outer tube part and provided along the center axis with an uncoated-fiber holding bore, communicating with the coated-fiber holding bore, for securely accommodating an uncoated optical fiber.

Abstract: A slider mechanism (1) for an injection mould comprising a core (5) which is insertable into a cavity (20) defined by mould halves (12) of the mould. The slider mechanism (1) has a body (2) which supports the core (5). The invention is characterised by a drive means (3), and a connection (4) between said body (2) and said drive means (3). The connection (4) is adapted to convert a rotary motion of the drive means (3) into a translational motion of the body (2). The invention also concerns an injection mould comprising such a slider mechanism as well as the actual slider.

Abstract: A casting tool for an air intake duct includes a mold and exchangeable extractable cores for the formation of a cavity. The exchangeable extractable cores are provided for the mold, by which, while retaining the mold as such, different air intake duct geometries, especially different air intake channel cross sections, can be produced. In this manner a plurality of intake duct variants can be produced at substantially constant tool costs. This permits the economical use of injection molded synthetic resin air intake ducts, since the very expensive casting tools can be provided for a sufficient number of air intake ducts.

Abstract: A molding apparatus and molding method are provided for molding of small objects from a thermoplastic elastomer. The apparatus includes a heated transfer plate assembly, an insulation plate assembly adjacent the transfer plate assembly and a cooled cavity plate assembly. The transfer plate assembly is heated sufficiently to maintain a thermoplastic elastomer in a molten state. The cavity plate assembly is cooled sufficiently to solidify a thermoplastic elastomer injected into cavities of the cavity plate assembly.

Abstract: A device and a method for forming a food mass on a spit (2) for preparation of a hollow food product is based upon the use of a cylinder (5) having a cavity and a spit (2) about which the food mass is to be formed. The cylinder (5) and the spit (2) are movable relative to each other along a longitudinal axis of the cylinder. A hole (8) is provided for introducing the food mass into the space formed between the spit and an inner wall of the cylinder. The device has a piston (6) receivable in the cavity of the cylinder. The piston (6) and cylinder (5) are relatively movable in the longitudinal direction of the cylinder.

Abstract: A plastic injection molding machine includes a rod having an end engaged with a slide member located beside the lower mold, and a position block connected to the upper mold. A pin is movably inserted in two respective inclined holes in the position block and the slide member so that the threaded section on the tip end of the rod is moved into the cavity with the movement of the slide member. The rod is located between two side members each have a threaded semi-circular recess. Another threaded section has the same threads of the thread section on the tip end of the rod is engaged with the two threaded semi-circular recesses so that the rod is rotatably withdrawn from the cavity smoothly when the rod is rotated by a motor.

Abstract: A system for molding optical attenuators that have a lens portion and a supporting portion includes a molding machine containing a mold, an extractor robot and optical inspection portion, and a controller that assesses the inspection information and send control signals to the molding machine and mold. The mold includes a cavity and a core which define a space in which the supporting portion and the attenuator are formed. The cavity and core are separable from each other by an actuating motor of the molding machine subsequent to each injection cycle to permit removal of each molded optical attenuator. The mold also includes a core pin, movably located in the core element. The core pin has a proximal end defining a surface of the lens portion and a distal end remote from the molding space. A core pin motor is coupled to the core pin, through a number of intermediate elements, so that the core pin can be moved relative to the core element to adjust a thickness of the lens portion.