Abstract: An apparatus acts upon an extrudate rope to form individual elements of predetermined size and shape which elements are separated from one another a predetermined distance. A die is used having a predetermined shape with indentations therein to press the extrudate rope against a support at predetermined locations. A conveyor belt is used to carry the extrudate rope in one direction, and the die is supported such that during the pressing operation the die forward speed matches the extrudate rope forward speed. A supporting table underlies the conveyor belt. The die has a pair of generally spherical indentations for shaping pieces from the extrudate rope. The die is formed of a non-stick material such as Teflon.RTM.. A chamber is located in an opposite surface of the die from each respective indentation, to serve as a plenum fluid supply to the indentations, bores connecting the respective opposing chambers to respective indentations.

Abstract: A container mold comprising a mold cavity portion and a mold core portion with the cavity and core portions being relatively moveable between a closed and an open position. By this invention, means are provided for molding a recess-defining flange in the container.

Abstract: A tamper proof closure cap for a container, a tool for manufacturing the cap and a method for removing the cap from the tool are defined. The cap is designed with the tamper proof skirt as a unitary structure with the main body of the cap. The skirt has unique structural aspects which allow for less complexity in the tool and ease of removal of the cap from the tool. The tool includes a stripper ring which laterally support the skirt and permits a shift of the pivot plane for the skirt relative to the main body portion during removal of the cap from the mold.

Abstract: A molding machine for producing footwear soles includes a frame carrying a pair of extruders for thermoplastic material at one end; a pair of bottom molds mounted on hot runner systems on the other end of the frame; a pair of vertically movable top molds mounted above and cooperating with the bottom molds to define mold cavities for receiving the thermoplastic material from the hot runner systems; a swing out system for swinging each top mold from a horizontal molding position to an unloading position; gripper jaws for gripping the soles and removing them from the top molds; and swing arm assemblies carrying the gripper jaws for carrying the soles away from the molds to conveyor or packaging locations.

Abstract: Present invention relates to a metal mold device comprising a female die, a die frame having a hole and a male die assembly moving along an axis of the hole to produce a plastic molding having an opening with a partially waved inner sidewall. The male die assembly comprises a generally upwardly tapering central base having a rectangular top and four side slopes, a pair of opposed primary slide members and a pair of opposed auxiliary slide members. The primary slide members are strictly mounted on the opposed side slopes respectively while the auxiliary slide members are loosely mounted on the remained opposed side slopes respectively.

Abstract: A mold and a molding method are described for forming a closure device having a cap portion, a cylindrical plug portion extending therefrom, and a cylindrical collar extending substantially coextensively and coaxially with the plug portion spaced therefrom to provide an annular recess for receiving the open end of the container to be closed. The mold cavity is defined by mold segments and by a substantially cylindrical hollow outer core which extends into the mold cavity and defines the annular recess in the closure device between the collar and the plug portion. The mold segments include a gripping portion for retaining the closure device. The gripping portion retains the closure device while the outer core is extracted from the cavity. The gripping portion of the mold segments is then separated along with the remainder of the mold segments to remove the molded device.

Abstract: In order to remove a thin-walled wax model adhering to the walls of a first core piece and a second core piece, after solidifying, from a multi-part device for making thin-walled wax models, without damaging the wax model, after the external pressure is released, a mold-opening moment is generated simultaneously and abruptly in axially opposite directions by spring-loaded push-off bolts or directly by leaf springs in the upper parting faces and lower parting faces of the device. As a result, both the lower closing plate and the upper closing plate are separated from the annular casing and the wax model is separated from the core pieces, by a maximum of 3 mm, axially in opposite directions because the adhesion of the wax model to the walls of the core arrangements is overcome simultaneously and abruptly. Subsequently the two core arrangements and the casing are transported away from one another in an axial direction relative to one another, so that the wax model is freed.

Abstract: A machine is provided which includes a pick-up station adapted to receive flat confection discs from a baking machine, and feed them in succession to a rotary wheel at a forming station to lap fold the discs into taco shape. A fixed elongated support rail having a curved upper surface extends generally the length of the conveyor and receives the folded shells thereover so that the shells hang therefrom. An endless belt is coextensive with the support rail and biasingly holds the formed shells to the rail and frictionally drives the shell freely slidingly therealong. A pair of shell leg receiving channels are disposed beneath the support rail, with the channels formed by inner and outer generally parallel walls coextensive with the rail. The inner walls are defined by a support device beneath the rail while the outer walls are formed by plates which are transversely adjustable to thereby control the channel width and shell leg angle.

Abstract: A collapsible mold core having plural can actuated members surrounding a conical central core member, the members surrounding the central core member having slidable pins connecting adjacent members and molding apparatus including the core.

Abstract: The quality and useful life of curing bladders used in standard "Bag-O-Matic" tire vulcanizing presses is greatly improved by replacing the standard split two-piece core of the bladder mold with a unitary core which forms a disc-like rubber diaphragm below the core and integral with the rubber curing bladder at the periphery of the core. A unique base plate fits in the lower mold half below the core and has a grooved upper surface to hold the diaphragm in place so that the core can be removed manually or automatically with the assistance of internal air pressure.

Abstract: Undercut tubular synthetic plastic articles, such as fittings, are formed in the mold cavity of an injection molding machine on a one- or two-piece core a portion of which is surrounded by the undercut portion of the article and a first smaller-diameter portion at one side of the undercut portion. If the core consists of two components, a cylindrical component of the core slidably guides the aforementioned portion and is surrounded by a second smaller-diameter portion of the article at the other side of the undercut portion.

Abstract: For the molding of bottle caps having irregular lower boundaries, such as caps having depending tabs, the conventional mold has a core and a surrounding sleeve in which the core slides. This is modified by using a split sleeve which is maintained in close contact with the core during molding, but whose elements are freed to move outwardly away from the core when the mold begins to open. This solves the prior art problem of the galling of the contacting surfaces of sleeve and core.

Abstract: A transparent thin bottle-shaped container is produced by means of a technology for biaxial orientation blow molding a cylindrical piece with a bottom from polyethylene terephthalate material. The pieces are molded in numerous large number in each injection molding process of an injection molding machine. The pieces thus formed immediately after the injection molding are held simultaneously in large number at the gates integrally projected therefrom by a base plate moved forward at the front of the mold in the injection molding machine. They are then conveyed to a gate cutting unit provided near the injection molding machine. The gates are cut from the pieces sequentially by the gate cutting unit and are conveyed onto a conveyor. The pieces are gradually cooled from the hot molded temperature during the conveyance and are additionally cooled while being conveyed on an oblique conveyor installed with a cooler to room temperature or lower predetermined temperature.

Abstract: In order to mold tamperproof bottle closures or other plastic articles having a threaded cap frangibly connected with an adjoining skirt which has a number of internal projections or spurs inclined in a transverse plane at approximately identical acute angles to its inner peripheral surface, a male mold portion has a core in the form of a stepped cylinder with a small-diameter part rotatably enveloped by a sleeve flush with an adjoining large-diameter part jointly defining an annular gap with a surrounding shell. The sleeve has recesses in the shape of undercut slots forming the internal projections of a skirt molded in that gap; after sufficient hardening, the shell is rotated to extract these projections from their recesses with resulting radial expansion of the skirt into an adjoining space from which the shell has been axially withdrawn.

Abstract: Arrangement for the die casting of a roller bearing cage having pockets for the rolling bodies includes an outer housing covering the die casting mold and having guide openings opening at the central planes of the respective pockets and main and auxiliary slides arranged side by side in each guide opening. The main and auxiliary slides have guiding surfaces at their inner ends directed at an angle to the central plane, the guiding surfaces being laterally opposite one another and supporting one another. Each auxiliary slide has a lateral bulge on the side thereof opposite the guiding surface of the guide opening for defining a lateral limit wall of the pocket with holding projections for the rolling bodies on the inner and outer edges. The arrangement in accordance with the invention requires few components, provides a compact construction, and is economically produceable. The main slides are each operable from the exterior of the apparatus, and have recesses with inner and outer shoulder surfaces.

Abstract: A molding core has side by side segments assembled for rocking about pivots intermediate their ends, and are rocked to their alternate positions by an actuating pin (or pins) having camming surfaces for that purpose, arranged for non-interference of the pin with the rocking movements of the segments.

Abstract: A pastry and dumpling maker for shaping and forming filled pastries, such as dumplings and the like, including a pair of cooperating mold sections which define therebetween a particular pastry shape to be formed. The mold sections are relatively moved into cooperative engagement with each other after the pastry is formed. A flexible strap is suspended above the mold sections and supports a dough skin with a filling placed thereon. As the mold sections are brought into cooperative engagement, a center portion of the flexible strap, together with the dough skin and filling, move downwardly between the mold sections, whereupon the dough skin is folded over the filling and sealed by the mold sections into the particular pastry shape. The shaped pastry is then removable upon separation of the mold sections.

Abstract: A food mold having a rectangular body having sides and an upper mounting plate is disclosed. A dislodging plate is disposed within the body in a plane parallel with the mounting plate. A central shaft is connected to the dislodging plate and extends upward above the mounting plate. The shaft is positioned within an encircling depth control means. The depth control includes a sleeve in communication with the mounting plate and which contains depth indicators whereby a projection on the central shaft engages the desired depth indicator and controls the depth of the mold. A depth control selector is connected to the central shaft to rotate it so the projection engages the desired depth indicator.

Abstract: Concrete elements and a lifting mechanism are secured against tilting at the time of form removal, and the formwork is fixed in place. In the apparatus, a forming unit, a concreting unit and a form removal unit are provided. The forming unit has a single rigid form adapted to shape the bottom and the sides of the elements or products, is open on top and is assembled for use as required. The form removal unit has means for maintaining the product and the removal unit itself in a fixed position against tilting, as well as means for maintaining the formwork in a fixed position, and means for actuating them.

Abstract: Apparatus for extracting frozen stick confections from several mold cups of a mold strip of a stick confection freezing apparatus is disclosed. At a pre-extraction station, the sticks of the frozen confections are individually grasped and individually pulled with separate spring forces while the mold cups are heated from below by hot water sprays. Each confection is lifted from the mold cup as soon as the surface layer thereof sufficiently thaws, and before each confection is completely removed from the cup, it is released and dropped back into the cup. At a second extraction station, all of the confections are simultaneously removed and thereafter conveyed to apparatus for wrapping the frozen confections.

Abstract: Apparatus for continuously and rapidly forming trays of highly uniform elastomeric soil plugs comprises means for continuously mixing a water-containing soil slurry with a water-reactive pre-polymer compound, means for supplying the soil slurry and the pre-polymer compound to the mixing means at respective controlled rates, and means for delivering the mixed soil slurry and pre-polymer compound to a dispensing station for dispensing into mold receptacles; the receptacles are disposed in a closed path and carried by transport means seriatim past the dispensing station. Releasable bias means biases a tray mold member against a base mold member within each receptacle so as to extrude soil-pre-polymer mixture into plug-molding cavities of the tray mold member. The bias means is released after the plugs within the tray mold member have cured.

Abstract: A releasing apparatus for removing a shuttering from a molding such as a concrete panel.This releasing apparatus is of such an arrangement that an erectable frame for erecting and laying down a shuttering bed between a carry-in position and an erected position is erectedly provided on a base frame, a molding receiving mechanism is provided for receiving only a molding disposed on the shuttering bed in a state where the erectable frame is erected, and, after the molding has been received, the erectable frame is laid down to be ready for the succeeding shuttering bed to be carried in.

Abstract: In a method and apparatus for casting or molding cages for rolling elements, two slides are provided for each pocket. The slides have an engaging, inclined surface, and are shaped to permit one of the slides to be removed by initially sliding it along the inclined surface. The other slide may thereby be moved laterally in the formed pocket, and withdrawn from the pocket. Facing slides of adjacent pockets may be joined together, with limited movement possible therein, to form a complete ring serving as a mold member.

Abstract: An injection molding machine comprises an injection mechanism for heating and melting molding material and for injecting the molten material into cavities defined by a fixed die and a movable die and a die clamping mechanism for clamping and separating the fixed die and movable die. The fixed die is attached to a fixed platen provided near the injection mechanism and the movable die is attached to a movable platen provided near the die clamping mechanism. The die clamping mechanism is movable in a horizontal direction. A slider is provided on said movable platen and can reciprocably slide in a horizontal direction different from the direction in which the die clamping mechanism moves, and the aforesaid movable die and another movable die are attached to the slider so as to alternately come into face-to-face relation with the fixed die as the slider reciprocates.

Abstract: Mold elements, generally composed of clay, are removed from the mold by pressing the body upwardly with a wedging action.

Abstract: An apparatus for assisting in the removal of an ejection-molded article from the core of a mold is disclosed in combination with a molding machine in which the mold core is fixed to a moving platen and an ejector mechanism is supplied which mechanically removes the article from the core. The assisting apparatus includes a conduit leading to a surface of the mold core which defines the bottom of the article formed. A piston and cylinder is connected to the conduit, the interior of the cylinder being dimensioned to be approximately equal to the interior volume of the article formed. The cylinder is fixed with respect to the platen, while the piston is fixed with respect to the ejector apparatus.

Abstract: In a metal mold for molding a hollow product having inwardly tapered side wall with a stationary die plate for forming a bottom portion of the product, a core, and a cavity plate surrounding the core, the core has a truncated pyramid shape and first and second slide cores are provided between the core and the cavity plate. The core and slide cores are constructed such that at the time of opening the mold both slide cores are moved inwardly in an interlocked relation with retractive movement of the core thus leaving one end of the molded product for enabling removal thereof.

Abstract: In a method and apparatus for casting or molding cages for rolling elements, two slides are provided for each pocket. The slides have an engaging, inclined surface, and are shaped to permit one of the slides to be removed by initially sliding it along the inclined surface. The other slide may thereby be moved laterally in the formed pocket, and withdrawn from the pocket. Facing slides of adjacent pockets may be joined together, with limited movement possible therein, to form a complete ring serving as a mold member.

Abstract: A method of producing finishing chips comprising the steps of providing a castable mixture of particulate abrasive grains and a solidifiable matrix, depositing the mixture into cavities of a generally-cylindrical, flexible mold having a plurality of cavities in the interior surface thereof conforming to the desired configuration of finishing chips to be produced, rotating said cylindrical mold during solidification of said mixture and the production of solid finishing chips within said cavities, and ejecting said solidified finishing chips from said mold by bringing said mold to an inside-out position, whereby said solidified finishing chips are ejected from said cavities, is disclosed.

Abstract: Mold for injection molding battery containers which include a plurality of thin resilient ribs integral with and projecting at acute angles from the inside walls thereof into the cell compartment(s) to hold the battery's innards therein. The core of the mold includes a mandrel defining the cell compartment. The mandrel has dovetail-like mortises therein and complementary-shaped ejector bars reciprocally slideable within the mortises between retracted and extended positions to facilitate stripping the container from the core. The rib-forming portion of the mold cavity is formed in the side walls of the ejector bar. The ejector bars travel with the container during at least part of the ejection cycle so as to free the rib from the rib-forming cavity without untoward resistance or permanent deformation of the ribs.

Abstract: A cavity plate means is removably positioned between upper and lower mold plates with the upper surface of the cavity plate means flush against the upper mold plate. The cavity plate means has openings from top to bottom thereof and holds objects spaced from the upper mold plate with the portions of the objects which are to be encapsulated being in registration with the cavity plate openings. Fluid plastic is forced laterally through feed runners formed in the surface of the upper mold plate and downwardly through gates into the cavity plate openings. After the plastic has hardened, the plastic ejected from the feed runners of the upper mold plate and the cavity plate means is removed. Preferably the objects are pre-mounted on the cavity plate means, and the lower cavity plate surface is positioned flush against the lower mold plate which is uninterruptedly flat.

Abstract: Mold for injection molding battery containers which include a plurality of thin resilient ribs integral with and projecting at acute angles from the inside walls thereof into the cell compartment(s) to hold the battery's innards therein. The core of the mold includes a compartment-shaping mandrel which in turn includes ejector bars reciprocally slideable within complementary-shaped mortises in the mandrel. Rib-forming cavities are formed in the side walls of the ejector bars. Lips at the distal ends of the ejector bars project toward the mortise walls to produce undercuts at the bases of the ribs which in turn result in the formation of ribs which are detached from the bottom of the container.

Abstract: A mold having an integral piece for casting a hygienic-sanitary appliance is disclosed. The mold includes a lower mold piece, at least two lateral mold pieces which are mounted on the lower mold piece to define a molding cavity for an article to be cast. An upper mold piece is mounted in position on the lateral mold pieces to close the mold cavity; the lateral and upper mold pieces being separable from the lower mold piece and the cast article to leave the latter resting on the lower mold piece. Below the cavity of the mold there is provided an annular or partially annular shaped base to support the cast article.

Abstract: A feed mechanism comprising a rotor and an endless flexible belt carried by the rotor. The rotor comprises a pair of cylindrical guide members arranged coaxially one within the other, the guide members being mounted for rotation in unison about a common axis. Each of the guide members provides a helical groove defining a respective feed channel, the grooves being of the same pitch and opposite hand, and the belt is constrained by the guide members to extend helically along the feed channels in sliding engagement with the guide members. The belt protrudes from one of the feed channels to engage a restraining surface which restrains the belt against rotation so that, in response to rotation of the rotor, the belt is continuously advanced along one of the feed channels and returned along the other, thereby providing a continuously advancing non-rotary bearing surface which bears against the restraining surface.

Abstract: An apparatus for and method of severing a continuous flexible reinforced elastomeric conduit supported on a plurality of elongated rigid mandrels disposed in connected end-to-end relation is provided with the apparatus and method enabling cutting through the conduit at each end of each mandrel so that each mandrel has a length of conduit therearound which is approximately equal to the length of the mandrel.

Abstract: A collapsible mold core comprises an inner core member defining opposed first and second ends. The inner core member tapers transversely to a reduced diameter from the first to the second end. A plurality of outer core members are attached to the lateral exterior of the inner core member in longitudinally slidable relation to it between first and second sliding positions. The outer core members define first and second ends corresponding in position to the first and second ends of the inner core member, with the outer core members tapering inwardly in transverse dimension from their second to their first ends to provide an opposite taper to that of the inner core member. The mold core is of lesser transverse diameter in the second sliding position than in the first sliding position. This permits the molding of an object such as a straight-walled bucket having an inwardly-projecting lip about the mold core while it occupies the first sliding position.

Abstract: A simultaneously molded threaded port and plug may be produced by a mold which comprises a first cavity for receiving molding compound to form a wall, a second cavity for receiving molding compound to form the threaded plug, and rotatable shaft means carrying external thread forming grooves and extending through the first cavity to define the threaded port. The shaft means terminates at the second cavity, with an end portion of the shaft being shaped to form a separable mechanical linkage between the end portion and the plug molded in the second cavity means. The shaft is rotated after molding to withdraw it from the molded, threaded port, and to rotate the molded, threaded plug into the threaded port for sealing thereof.

Abstract: Apparatus and method for producing a die cast article, such as a gear wheel having helical teeth, in which the die cavity is defined by fixed elements and a rotatable element. On completion of the casting the cast article can be ejected from the casting cavity on relative rotation between the fixed elements and rotatable element so that the cast helical teeth of the article can be removed in an undamaged condition.

Abstract: This invention comprises a device for automatically dropping mold goods in an injection molding machine instantaneously when the mold is opened.

Abstract: This invention relates to a ring form of a rigid and durable material with a metal insert arranged in its passageway. The ring is employed to strip thin walled gelatin capsules from capsule-forming pins which are slightly tapered along their entire length.

Abstract: A two-step ejector structure for molds for injection molding and the like has a first ejector member arranged to be directly acted upon for ejection and to act upon an ejector pin carrier which is to be displaced in the first and second ejector steps, and a second ejector member acting upon a second ejector pin carrier which is to be displaced only in the first ejector step, and a coupling to accomplish the movement of the second ejector member during a predetermined first portion of the ejector movement of the first ejector member and thereafter release the first ejector member from the second ejector member and lock the second ejector member to a member securedly connected to a tool.

Abstract: A molding method and apparatus is described for the formation of plastic coin holders characterized by a generally C-shaped body in which portions of the male and female mold parts are moved relative to each other to permit the coin holder to be sprung off the male member.

Abstract: The mandrel includes a generally cylindrical but tapered outer molding surface for forming a sidewall portion of a tank from thermosetting resin and reinforcing material deposited thereon and a tank bottom mold for forming a bottom portion of the tank integrally with the sidewall portion. The tank bottom mold is shiftable to strip a completed tank from the tapered molding surface.

Abstract: A method for axially extracting a rubber hose of great length from the correspondingly long core about which the article has been formed and vulcanized, comprising the steps of positioning the article having its core therein on a correspondingly long longitudinally displaceable support having an upper surface adapted for frictionally engaging the hose, securing one end portion of the core, external to the hose, in a stationary location, and longitudinally displacing the support for spacing the same from said location, whereby a pull is exerted at all points along the hose for causing the core to be extracted from the hose.

Abstract: An injection-molding machine has a fixed and a movable outer platen bracketing a movable intermediate platen, the latter having a runner system conducted via an extensible or flexible conduit to a source of molten plastic material to be injected into cavities defined by respective pairs of mold portions supported by the three platens, the cavities being formed in part by cores carried on the outer mold portions. A stripper plate inserted between each pair of mold portions is articulated via a spring-loaded lost-motion link to a respective eccentric pin on a pinion which is rotatably mounted on the intermediate platen and meshes with a pair of racks respectively secured to the two outer platens; this linkage is duplicated on opposite sides of the mold. In an initial phase of a mold-opening stroke, the stripper plates move outwardly under spring pressure while remaining in contact with their respective outer mold portions whose cores still retain the freshly molded articles.

Abstract: Method and apparatus for the controlled removal of molded parts using a member that is precisely positioned to act between the face of a mold and a structure being molded by engaging the structure and transporting it to a prescribed position for release.

Abstract: A method and apparatus are disclosed for injection molding tubular plastic articles around cylindrical core pins at a molding station, for cooling the articles while supported on the core pins, and for then axially stripping the articles from the core pins at an ejection station. The article stripping step is accomplished by a horizontally reciprocable carriage which is selectively moved into and out of vertical alignment with a set of core pins and molded articles positioned at the ejection station. Sectional gripping members on the carriage are radially closable when in alignment with the molded articles, to grasp the articles for their axial removal from the core pins upon the horizontal displacement of the carriage. The stripped articles may be held in a horizontal cantilever position between the gripping members during an operational dwell time for additional cooling subsequent to their removal from the core pins.

Abstract: A molding method and apparatus is described for the formation of plastic coin holders characterized by a generally C-shaped body in which portions of the male and female mold parts are moved relative to each other to permit the coin holder to be sprung off the male member.

Abstract: An injection mold with a female mold portion and a male mold portion has a locking ring with beveled inner centering surfaces which, in a mold-closed position, embrace respective outer centering surfaces of the two mold portions for holding them precisely aligned for molding a thin-walled cup between a tapered core of the male portion and a cavity wall of the female portion. The core is surrounded by a stripper ring which rests on an internal shoulder of the locking ring concentric therewith and is entrainable with the latter by a stripper plate when the mold is opened. The two concentric rings may be interconnected by screws, by a snap ring, or by radially extending pins lodged in coplanar bores of the locking ring and engaging in a peripheral groove of the stripper ring, these pins having flattened faces or eccentric ends held in contact with one of the groove walls by mounting bolts which traverse the channels and secure the locking ring to the stripper plate.

Abstract: The present invention relates to a device used in capsule-making machines which, after the gelatin has cured, strips it off the tapered forming pin. More particularly, the device is a plastic ring having a spring metal split ring insert embedded therein along with an external anti-creep spring to maintain proper dimension of the device.