Abstract: A mold for joining a molded portion onto an end of an extruded weather strip without having any looseness in the joint formed therebetween, and which facilitates removal of a fin formed in the molded portion. The mold includes mold members defining a cavity at an end of which an end of the extruded weather strip is placed, and to which a molding material is injected. The mold members further define a tunnellike additional cavity in a parting plane therebetween. The tunnellike additional cavity extends along a peripheral edge of the cavity so that an end thereof is located at the position beyond the end of the extruded weather strip. A passage is also defined in the parting plane so as to interconnect the cavity and the tunnellike additional cavity for introducing a molding material into the tunnellike additional cavity. The passage extends to a position close to but not beyond the end of the extruded weather strip.

Abstract: A pair of semispherical molds, each having dimple-forming projections on a connecting portion is used to shape a resinous material into a golf ball having dimples on a seam corresponding to the connecting portion. A ball fixing means is utilized to hold the golf ball thereto with the seam uncovered. A cutting member disposed at an end of a rotary shaft, and having a radius of curvature smaller than a sectional radius of curvature of the dimple is utilized to remove a burr from the seam of the golf ball. The rotary shaft rotates on its axis and moves forward when the cutting member is brought into contact with the dimple on the seam and backward when the cutting member is brought into contact with a convex land portion. The cutting member is then pressed against the seam successively in alternate contact with the dimples and the land portions.

Abstract: A vent valve for a gas assisted injection molding machine has a valve member to control flow from the mold cavity. A shear co-operates with an anvil in the passageway between the mold and valve member to sever material in the passageway as the molded article is ejected.

Abstract: The present invention teaches an improved method and apparatus for molding plastic products which results in the removal of plastic residue such as flash from the products during the molding process itself. The invention teaches the use of flash retainers, situated within the mold, and into which a portion of the plastic flash becomes trapped during the molding process. After the mold is opened, the product is removed, leaving the flash still secured to the mold. The flash is then removed from the mold by the use of ejector rods which are inserted to within the flash retainers, forcing the flash from the retainer and thereby releasing the flash from the mold. In one embodiment, the flash is pinched between two members which are moved simultaneously away from the molded product to tear the flash completely away from the outer periphery of the molded product.

Abstract: An apparatus for removing the burr from the seam of a golf ball made using a pair of semispherical molds each having dimple-forming projections on a connecting portion to shape resin into a golf ball having dimples on a seam corresponding to the connecting portion. A ball fixing mechanism holds the golf ball thereto with the seam uncovered. A cutting member having a cutting member, disposed at an end of a rotary shaft, having a radius of curvature smaller than a sectional radius of curvature of each of the dimples. The rotary shaft rotates on its axis and moves forward when the cutting member is brought into contact with each of the dimples on the seam and backward when the cutting member is brought into contact with a convex land thereon. Thereafter, the cutting member is pressed against the seam successively removing the burr while maintaining the integrity of each of the dimples.

Abstract: Apparatus for removing flash from a flexible molded part includes a support for supporting the part being deflashed in underlying relation with first and second pinch rollers which are located at opposite ends of the part, and first and second conveyor assemblies associated with the first and second pinch rollers, respectively, are adapted to move the flash at both ends of the part into engagement with the pinch rollers which are driven in opposite directions and have knurled surfaces, causing the flash to be pinched between the pinch rollers and the associated conveyor assemblies, pulling the flash from said part, the conveyor assemblies conveying the flash away from part.

Abstract: An apparatus and method for trimming a contoured non-round workpiece includes a torch for flame treating or trimming the workpiece by impinging a flame on the workpiece, a holding member for supporting the workpiece, the holding member being rotatably mounted relative to the torch, and a control member for cooperating the holding member with the torch so that the torch follows the contour of the workpiece when the holding member is rotated relative to the torch. The control member generates an electronic image of the workpiece and guides the torch along the contour of the workpiece in accordance with the image.

Abstract: The present invention relates to the field of article manufacture and more particularly to an apparatus for removing the flashing from a manufactured article. The apparatus includes at least one gripping unit for gripping a portion of the flashing. The gripping unit is switched by a pneumatic actuator between an open and a clamping configuration. A support is provided upon which each gripping unit is movably mounted, and an indexing actuator is provided for indexing each gripping unit along the support between a rest position displaced from the support surface and a clamping position adjacent to the support surface. A control unit is provided for controlling the operation of the pneumatic actuator and the indexing actuator to effect removal of the flashing. The control unit causes each gripping unit, when in the clamping position, to switch from the open configuration to the clamping configuration to grip the flashing.

Abstract: A dresser apparatus is provided for a strand of blow-molded articles interconnected by shorter flashings. A first pair of first rollers and a second pair of second rollers are of the gear type and are mounted for rotation to define pinching planes therebetween along which the strand is directed. The second rollers are relatively spaced to engage the articles and flashings passing therebetween, and are spaced from the first rollers such that the second rollers engage each flashing or article while a succeeding article or flashing is being engaged by the first rollers. A second moving device rotates the second rollers at a predetermined speed which is greater than the speed of the first rollers. Thus, each flashing or article is pulled from the succeeding article or flashing.

Abstract: A molding machine has a mold material supply, a die setting assembly, separating and de-burring assemblies. The supply includes a mold material feed, an extruder for receiving a mold material from the mold material feed and extruding the mold material so as to form an extruded mold material, a cutter for cutting the extruded mold material, and a transfer assembly for receiving the extruded mold material from the cutter and transferring the same.

Abstract: A trimming apparatus for trimming blow molded plastic workpieces includes a torch for heat trimming the workpiece; a turntable for supporting the workpiece, rotatably mounted relative to the torch; and a cam for guiding the torch, the cam cooperating the turntable with the torch so that the torch follows a contour of the workpiece when the turntable is rotated relative to the torch. The cam is preferably disposed on the turntable and in registry with the workpiece, and has a contour selected according to the contour of a surface of the workpiece to be trimmed so as to properly position the torch relative to the surface of the workpiece to be trimmed.

Abstract: A method for manufacturing a semiconductor device, which has the steps of connecting adjacent outer leads, with an insulating photoresist or prepeg material with a width locally provided only in areas with said width along the direction of arrangement of outer leads, and of resin-sealing areas other than said outer leads and said insulating material while preventing the outflow of sealing resin by way of said insulating photoresist or prepeg material.

Abstract: Trimming apparatus for trimming the top flash, neck flash, handle opening flash, and bottom flash from a blow molded plastic bottle. The handle opening flash is removed by a punch and anvil to act against the handle opening flash and push it laterally away from the handle for separation from the bottle. The top and neck flash, and the bottom flash, are each removed by respective gripper devices that grip respective portions of the flash and pull the flash linearly away from the bottle to effect separation of the flash from the bottle. The handle opening flash removing device remains in position within the handle opening to thereby serve to hold the bottle against vertical upward movement as the top and bottom flash are being removed. Upper and lower grippers having a pair of gripper jaws are provided to pull the flash in an axial direction from the top and bottom of a bottle, and to avoid the need for precise positioning of the bottle relative to a flash cutter.

Abstract: According to the invention, calibrated rings are obtained by superficially vulcanizing extruded or profiled extrudate at the exit of an extrusion head (T), then by cutting this vulcanized extrudate into portions by means of a conical cutting device (C), subsequently by butting the two ends, in the respective form of a conical tip and a funnel, of each portion (t) together under hot conditions and under a controlled pressure, in order to obtain a ring blank which is then engaged between the half-cavities of a mold (Mo), where it undergoes shaping and vulcanization by the heating of the latter and thereafter deburring as a result of a shearing action produced by a push device (D) causing the half-cavities to slide in the closed position in the frame of the mold, before causing the opening of the latter by means of a device (G) and the release of the calibrated and superficially clean ring obtained.

Abstract: Apparatus (30) for finishing a blow molding (24) is disclosed as including a rotary head (42) on which a first knife holder (44) is provided for mounting a knife (46) for radial movement with respect to the rotational axis (A). A second knife holder is mounted in a diametrically opposite relationship to the first knife holder and actuated so as to maintain a balanced relationship during rotation of the rotary head. An actuating mechanism (48) actuates the knife holder (44) to move the knife (46) radially inward with respect to the rotational axis (A) during rotation of the head (42) to cut the blow molding received thereby and thereby provide finishing that removes excess material. The actuating mechanism (42) is preferably constructed as a cam actuator (50) including a cam follower (56) and a cam (58) that operate after a first portion (52) of the rotary head (42) is stopped from continued axial movement as a second portion (54) of the rotary head continues to be moved axially during the rotation.

Abstract: A core collecting tray for a core blowing machine is provided which forms part of a slide which can reciprocally move longitudinally on tracks through sheaves, be lifted by a hydraulic cylinder that acts on a deck and with the assistance of vertical guides. The tray is adapted to cross travel by a further hydraulic cylinder and is fitted with a clipping template which can in turn travel upwards on additional guides and with the assistance of a third hydraulic cylinder.

Abstract: A series of driven rolls for separating blow-molded products from segments of flash material in a string of products formed in a synthetic resin continuous molding machine. A first pair of rolls receives a string of products joined by flashes as the products are removed from the dies of a blow-molding apparatus. At least one of the rolls in the first pair of rolls is driven at a first rotational speed. An intermediate pair of rolls receives the string of products and flashes from the first pair of rolls, and the intermediate rolls are driven at a speed faster than the first rotational speed to stretch the string of products and thereby separate the flashing segments from the products. A pair of last rolls is spaced by an interval from the pair of intermediate rolls. The interval between the intermediate rolls and the last rolls is adjusted such that the products and the flashes can be sorted by length.

Abstract: An apparatus for molding pieces of soap or other soft and pasty substances having at least a central rotor (2) capable of a reciprocating rotating motion supporting two half-molds (4, 4') placed at 90.degree. and at least two lateral rotors (1, 1') capable of a reciprocating rotating translating motion, each supporting a half-mold (3, 3'), the three rotors (1, 1', 2) having their axis of rotation parallel to the feeder and discharge conveyor belts (6, 6', 7, 7', 8). Between each lateral rotor (1, 1') and the central rotor (2) an elevator/lifting device (5, 5') or other apparatus lifts/raises the pieces (19, 19') to be shaped from the feeder belt (7, 7') and brings them to the molding area, each lateral rotor (1, 1') capable of a rotating translating motion, translating in a radial direction towards the central rotor (2) molds the piece and then moves away with the molded piece (10, 10') and while rotating deposits it on the discharge conveyor belt (6, 6') of the molded pieces.

Abstract: For removing projecting parts from tires by enbrittlement of the tire and breaking the projecting parts, a breaking tool comprising a ribbed flexible strap suspended in a frame so as to conform to the profile of an embrittled tire supported therein removes projections with movement of the tire.

Abstract: A method for preparing an elastic roller having a layer of elastic material disposed about and integrally molded to a shaft-shaped core metal member, includes the steps of disposing a cylindrical molding device for holding the elastic material, coating the core metal member with an adhesive, and mounting first and second lid members at opposite ends of the molding device. Each lid member holds a respective end of the core metal member so that the core metal member is disposed concentrically within said molding device. A sealing rubber is disposed between each lid member and the core metal member to prevent elastic material from entering a bearing portion of the core metal member, and the elastic material is injected into the molding device. The elastic material is cured, and the lid members are removed such that an extending portion of each lid member removes burrs formed at peripheral end portions of the roller.

Abstract: The present invention includes a method for deflashing unwanted material from manufactured articles and more particularly a method for deflashing rigid reaction injection molded articles The method includes the steps of providing a continuous flow of frozen pellets, providing a workpiece having flashing, directing the flow of frozen pellets at the flashing and the workpiece, and impacting the flashing and the workpiece with the frozen pellets.

Abstract: A method for removing flashing from a low density plastic blow molded bottle which includes nesting the bottle from which the flashing is to be removed such that substantially its entire surface is engaged in the housing, to facilitate the removal of the flashing from the neck of the bottle without damage to the bottle. The flashing is secured with jaws at the juncture of the flashing with the bottle to remove the flashing without damage to the bottle.

Abstract: A blow mold for use with the blow pin assembly having article body, neck, and finish defining portions including an anvil portion to permit severing of a flash portion of the parison from the article. A shearing ring portion cooperates with the anvil portion to sever the flash portion of the parison from the article and both portions are inclined with respect to a plane normal to the axis of reciprocation of the blow pin to form an inclined finish on the article. A tip portion has an outer surface cooperating with the finish defining portion to calibrate the thickness of the article between the neck and anvil portions.

Abstract: An apparatus is disclosed having a lower housing assembly and an upper clamping assembly wherein the flashing from the neck or top of a bottle, particularly a low density bottle, is removed without damaging the bottle.

Abstract: An apparatus for compression-molding plastic without producing flashes. The apparartus basically consists of a pair of dies complementary to each other, one being stationary and the other being movable so as to be capable of engaging the stationary one. The apparatus has substantially no clearance at a pinch-off section formed by the engaging edge portions of the two dies, and at least one of the engaging edge portions is made of plastic. In one embodiment of the invention both the engaging edge portions are made of plastic.

Abstract: A protective glove for the electrical industry is produced by the injection molding process by injecting plastic material into an injection mold from two opposite sides via a sprue flange. This sprue flange is cut off from the protective glove after the latter is removed from the mold.

Abstract: An apparatus for scraping off burrs at resin outer layer of a golf ball. According to this method and apparatus, even if some errors exist in the diameter of golf balls of resin outer layer, only burrs can be scraped off automatically at high efficiency, without impairing the degree of true circle of golf balls and without generating deformation of golf balls.

Abstract: A spin trimming machine for trimming the necks of objects that have a dome molded above the trim line of the object. The machine is capable of positioning the object being trimmed in a predetermined orientation with respect to its starting orientation. This is carried out by the adjustment of the position and angle of the knife, which adjustment can be carried out while the trimming machine is operating. Preferably, the trimmed objects drop onto a conveyor belt which is porous and a vacuum manifold draws air through the conveyor belt at the point where the object is separated from the dome which holds it.

Abstract: An apparatus for sealing around an insert in a molded part to avoid the escape of flash including a mold cavity cooperatively defined by at least two mold blocks, at least one of the mold blocks having at least one insert opening communicating with the cavity. A plunger chamber is substantially co-axial to the insert opening and communicates with the cavity via the insert opening, the plunger chamber having generally greater radial dimensions than the insert opening, thereby defining a generally inwardly-directed flange with respect to the walls of the plunger chamber. The surface of the flange remote from the cavity constitutes a seating surface within the insert opening. A resilient seal is fitted within the plunger chamber against the seating surface in proximity to the insert. A plunger is positioned within the plunger chamber for relative movement generally towards and away from the cavity to compress the resilient seal against the seating surface.

Abstract: An apparatus is provided for fabricating a wide-mouth plastic container, having an annular flange extending radially outwardly at the wide-mouth, from a stretch blow-molded intermediate article, having a dome-like accommodation portion extending radially-outwardly at a flange area and upwardly and inwardly from the wide-mouth of a generally cylindrical body portion. The apparatus provides for a two stage cutting and trimming operation which produces a precision concentric uniform flange around the wide-mouth of the fabricated container and provides for alternately and simultaneously performing the fabricating operations to provide a desired speed of operation of the apparatus.

Abstract: A lead frame for enclosing a semiconductor chip with resin has a plurality of leads and at least one side frame member for supporting the leads. The lead frame is formed at a required location with a resin adhering portion for effectively removing resin and fins solidified in the air vent of a molding apparatus and formed between the lead frame and the dies of the apparatus.

Abstract: An apparatus for the production of a synthetic resin skin uses a mold for forming at least two separate skin sections which are then joined prior or after a final heat treatment. The synthetic resin skin sections are produced in at least two separate mold members, and the skin sections are then caused to contact each other along determined faces or margins which are joined under light pressure. Any so-called selvage is easily removed after the joining which intimately bonds the skin sections to each other due to the curing of the synthetic resin.

Abstract: Method and apparatus for polishing an article are provided. The method features the step of contacting the article in an area to be polished with at least one polyethylene filament. The polishing apparatus comprises at least one polyethylene filament, and means for rotating the filament about a central axis for contact with the surface to be polished. The polyethylene filament of choice is characterized by a tenacity and an elongation such that the product of the tenacity and the square root of the elongation (toughness paramenter) ranges from 20 to 60 units. With use of such a filament, deflashing of an article to be deflashed can be accomplished simultaneously with the polishing of the article.

Abstract: Method for removing protruding reinforcing fibers from the flash area of a deflashed, fiber reinforced plastic article are provided. The method features melting the protruding fibers off of the article without damaging the article itself. The apparatus features an elongated chamber for receiving the articles, means for passing the articles in series through the chamber, means for heating air to a temperature of at least about 800.degree. F. (427.degree. C.), and means for directing the heated air across the articles one at a time while the articles are passing through the chamber.

Abstract: A mold used for forming an elastomeric article such as a tire under heat and pressure is provided with small grooves at seleted locations along the internal cavity walls to reduce or eliminate flash which customarily forms at these locations. Specifically, grooves are provided at the structural interfaces of replaceable mold components, such as tread and bead rings with cavity wall portions of the mold sections. The grooves operate to trap or collect elastomeric material extruded into the interfaces and provide a seal-like barrier to further flash.

Abstract: A method and apparatus for trimming molded hollow plastic articles having flash and a finish for a closure. Articles are moved in succession through the load, deflashing, facing, inspection, rejection and unload stations of a trimming apparatus by vacuum heads. The articles are picked up by vacuum heads and transferred through the stations by intermittent rotation of a turret carrying the vacuum heads. To ensure proper location, each article is picked up in the load station by a vacuum head and continuously engaged by this vacuum head throughout the deflashing, facing and inspection stations and into the unloading station unless rejected and released in the rejection station.To facilitate loading, unloading and operations in the work stations on the articles, their orientation can be changed from one station to another. To enable variation of the cycle time of the apparatus, the turret and the operating mechanism in the various stations is driven by a common variable speed drive.

Abstract: A device and method for flash suppression in a molding with rotation system having a non-rotating mating surface capable of venting gases during the molding process while simultaneously suppressing flash. Flash is directed inwardly and away from the mating surface and contained between a mandrel and mandrel housing in a low pressure reservoir which is completely separate from the mating surface. A cooling fluid is utilized to carry away flash particles from the low pressure reservoir and thereby further prevent contamination of the mating surface.

Abstract: The disclosure is of a tab-pulling device comprising a simple dovetail slide that grips a tab of a blow molded object between it and a planar, stationary jaw. As the tab-pulling jaw moves downward, a plunger or pusher finger carried thereon is projected outward to strip the tab from the movable jaw.

Abstract: This relates to the cutting or trimming of a blow molded polyester resin article utilizing a CO.sub.2 laser. The article is axially positioned and rotated while the laser beam is focused and concentrated on a preselected portion of the article. The laser beam beneficially vaporizes the polyester resin in the cutting thereof as opposed to forming a dust. Further, the action of the laser is one wherein a certain melting occurs so that the resultant cut edge of the retained part of the article is rounded and sealed.

Abstract: The top seal parts of bottle-like containers made by blow-molding a flexible synthetic resin are cut off by nonrotatably supporting each container, pressing from one side a cutting edge of a cutter against a specific cutting line on the top part of the container, and rotating the cutter around the top part thereby to cut off the top seal part. This process can be carried out by an apparatus comprising a plurality of combinations of mechanisms, each combination comprising a fixing device for nonrotatably and fixedly supporting a container, a cutting head which can be fitted onto the top seal part of this container and can be driven in ascending, descending, and rotating movement, and cutting head drive.

Abstract: A plastic jar is formed by blow molding a combination adapter and jar and thereafter the jar is cut from the adapter utilizing a laser beam. The jar may be blow molded from a preform which is of an injection molded laminated construction so that the wall of the jar is formed of plural layers. The head generated by the laser beam will melt and bond together these layers as opposed to permitting delamination as would occur should the jar be cut from the adapter by a knife or the like. The cut surface of the jar forms the mouth defining surface of the jar and it is preferred that the cut be inclined at a slight angle to a plane normal to the axis of the jar. Damage to the diametrically opposite surface of the jar by portions of the laser beam being utilized for cut off passing through the jar is prevented by a pressurized gas supply tube which is in the path of the laser beam and serves as an absorber for stray rays. This abstract is not to be construed as limiting the claims of the application.

Abstract: A transfer apparatus is provided for transferring a molded record from the record pressing station to the record trimming station of an automated record press. The transfer apparatus is comprised of a clamp which is circular in its closed position with an interior diameter large enough to hold a record by the flash formed about the outside diameter of the record. The clamp is pivotally mounted so as to oscillate between the record pressing station and the record trimming station. In use, the clamp is positioned in the closed position between the upper and lower molding platens so as to form a molding surface against which the flash is formed in a uniform configuration during molding. After the record is molded, the clamp in the closed position is oscillated to a position in alignment with the record trimming station. The clamp is then opened which releases the record for trimming. The clamp then returns to the record pressing station for the next molding cycle.

Abstract: A method and apparatus is provided for trimming flash from the outer edge of thermoplastic molded records and then finishing the outer edge. A molded record having flash on its outer edge is supported on a turntable and then rotated about its center. The flash and the outer edge of the record immediately adjacent the flash are selectively heated, preferably by using a focused infrared lamp, to a temperature above the glass transition temperature. A cutter is then advanced tangentially through the flash to remove the heat-softened flash from the record. The trimmed outer edge is then finished by bringing a shaped surface into contact with the softened edge and holding it there while rotating the record until the outer edge has the desired finished configuration. The heating is discontinued and the trimmed and finished outer edge is allowed to solidify.

Abstract: Mold and method of compression molding shell half covers around a core to form golf balls. Opposed dies are pressed together such that some of the material trapped between the approaching dies is forced back into the mold to compensate for shrinkage and the remainder is forced outside of the die cavities where it can be drained off.

Abstract: A method and apparatus for forming a round end on a small plastic filament which includes a die having a channel extending into one side with a hemispherical interior end and a bore extending into the other side and coaxially aligned with the channel and having a conic interior end. The tip of the conic section communicates with the hemispherical section. A relief recess is spaced from the periphery of the hemispherical section by a land portion. The peripheral edge of the land portion, which also forms the edge of the channel, may be formed into a knife edge. In the die the filament is cold-formed to provide a hemispherical section spaced apart from the distal end of the filament. Material displaced during the cold-forming process is deposited in a relief section extending peripherally about the channel.

Abstract: At a blow-molding machine for fabricating hollow blow-molded articles from a thermoplastic material a hollow blow mold is moved back and forth with a swinging or pendulum movement upon a transport device containing a mold-supporting platform between a receiving station for the hose-like thermoplastic material to be blow molded and a blow molding station. The platform carries article receiving and transfer means which move in unison therewith and serve to receive the hollow blow-molded bodies or articles formed at the blow-molding station and for delivering the same to an article outfeed or delivery station.

Abstract: A plastic bottle is held from a dome molded above the bottle neck and the dome-held bottle is moved along a horizontal groove by a moveable belt. A heated knife is held against the turning bottle neck and cuts the dome and undesirable flashing from the bottle at the top of the neck.

Abstract: An apparatus for continuously separating castings into necessary and unnecessary portions, which castings are automatically and continuously produced by a die casting machine. The castings are separated into the necessary and unnecessary portions by vibration applied to a conveyance mechanism and to a plurality of masses while the castings are conveyed along the conveyance mechanism, which comprises a plurality of bar members.

Abstract: A blow molding machine is disclosed for hollow plastic articles. The machine includes a clamp mechanism for a pair of mold sections. It comprises a body disposed below an extruder at an extruding station and a blow pin at a blow station and carrying opposed platens for supporting the mold sections. Each of a pair of levers is pivotally coupled with a respective platen and with the body and the levers are connected together by a pull bar. An actuating means displaces one of the platens relative to the body and equal and opposite motion is transmitted through the levers and the pull bar to the other platen for opening and closing the clamp. A lifting mechanism supports the clamp for movement between the extruding station and the blow station. The lifting mechanism is adapted for vertical motion by a hydraulic motor acting on a lifting frame. The frame is mounted by pivot links on the machine base and pairs of links are connected by a shaft with a crank arm, the crank arms being connected together by a tie rod.

Abstract: An apparatus for removing a waste portion from a blow molded article is disclosed. The apparatus removes the waste portion while the article is enclosed within the blow mold and features a gripping structure for gripping the waste portion and a power assembly associated with the gripping structure to move the gripping structure from the article, thereby pulling the waste portion from its point of attachment with the article. The gripping structure includes two opposed gripping means which are arcuately movable about their respective pivot points. Each pivot point is laterally displaced from the gripping structure and positioned along a line extending through the shortest distance from the pivot point to that portion of the gripping structure which is closest to the attachment of the waste portion to the article.