Abstract: A mold assembly having at least one mold body with at least one cavity formed therein. The mold includes at least one mold insert coupling portion formed on the mold body; at least one mold insert being of substantially complementary size and shape with respect to the mold insert coupling portion, each insert being provided with a tapered guide surface for guiding the mold insert into the mold insert coupling portion; at least one means for clamping the mold insert in a predetermined position within the mold insert coupling portion. The mold insert is reciprocally movable within the mold insert coupling portion in a direction generally perpendicular to the parting line of the mold assembly.

Abstract: A mold box assembly for forming molded concrete products includes a pair of opposed substantially parallel end plates joined at both ends by a pair of opposed substantially parallel mounting brackets. A plurality of partition plates extend between the end plates to define a plurality of substantially identical cavities for forming molded products. A slot is formed along the inside of each end plate substantially along the length thereof. Tabs which extend from opposing ends of each partition plate include a stud transversely mounted on the end plate using ring nuts. The opposing tabs and studs of each end plate are received in opposing end plate slots. End liners are bolted to the inside surface of each end plate over the studs on each side of each partition plate with the ring nuts bearing against the surface of the end liner.

Abstract: A wheel cover mold assembly is provided for all wheel cover styles of a particular wheel diameter and mounting system. The mold assembly includes a top and a bottom base. The top base carries a mold cavity plate and the bottom base carries a mold core plate. The mold cavity plate and mold core plate include cavity surfaces defining the configuration of a specific wheel cover. The bottom mold base additionally includes a core retainer plate, inserts and/or cores which define, in cooperation with the mold core plate, mold cavity portions for a wheel cover mounting system common to various wheel cover styles. If the mounting system comprises an annular grip ring, for example, the inserts or cores cooperate with the core plate to form a grip ring receiving channel on the inner face of the wheel cover. If the mounting system includes individual mounting clips, the mold inserts configure the mold cavity for clip receiving sockets which project axially from the inner face of the wheel cover.

Abstract: An extruder for rubbery materials includes an extruding unit having a die holder. A horizontal lead-through groove is formed in the die holder for slidably arranging a die plate therein. A rubbery material is extruded through the die plate in a predetermined direction to form a strip rubber member with a predetermined cross-section. A storing device is arranged on one side of the extruding unit, for temporarily storing a plurality of die plates to be subsequently used on a storing table in accordance with a predetermined use priority. The storing device delivers a next die plate from the storing table to a waiting position along the extension line of the lead-through groove. A moving device is operative when the die plates are to be changed, for moving a current die plate together with the next die plate at the waiting position, along the lead-through groove in a direction toward the other side of the extruding unit.

Abstract: An extrusion machine has a machine frame, an extrusion press with a material inlet opening and a material outlet opening, a drive for the extrusion press and a die located in the vicinity of the material outlet opening and a cutting tool associated with the drive. In the extrusion press is provided a changer mechanism, which has a support member for at least two changeable dies and/or cutting tools, the support member being movably located in a plane substantially parallel to the plane of the material outlet opening relative to the extrusion press.

Abstract: Encapsulation molding equipment includes individual loading bars each having an elongated support surface which receives strip-like carriers supporting semi-conductor chips and like objects for encapsulation. Cavity inserts having plural rows of cavities of different size and dimension individual to carriers having like numbers of chips of a range of size and dimension fit over the strips with each cavity on an insert surrounding the chip to be encapsulated. Converging gate passages and vent passages are formed on the surface of the insert spaced away from the mold base member for supply of resin from a central resin receptacle to the cavities. Support of the cavity inserts independent of the loading bars and resilient mounting of the loading bars is disclosed. The mold is completed by an upper mold member which closes the mold and effects a seal between the mold parts and provides for delivery of encapsulating resin to the cavities in the cavity inserts.

Abstract: An apparatus for mechanically separating water from coal includes a vibrating hopper, two contra-rotating cylinders, a solid collector, and a fluid collector. The hopper feeds hydrated coal or coal slurry to wells which are arranged along the surface of a first rotating cylinder. A second rotating cylinder has protrusions on its surface which are precisely placed such that when the first and second cylinders are brought in contact and rotated in contra-rotating directions, each of the wells of the first cylinder and a corresponding protrusion of the second cylinder form mating female and male dies. Coal in the female dies is pressed, and the moisture in the coal is squeezed out. The coal remaining in the dies is then delivered to the solid collector via a pusher. The distance between the cylinders may be varied through adjustable cylinder bearings or pillow blocks. Both the male and female dies may be removed and replaced.

Abstract: An injection mold device comprises a first matrix attached to a movable platen and a second matrix attached to a fixed platen. A multiplicity of first cavity units are attached to the first matrix. A multiplicity of second cavity units are provided for selective removable attachment to the first matrix during a mold-clamping state and to the second matrix during a mold-opening state. A self-holding device is associated with the first matrix for maintaining a clamping force between the first cavity units and the second cavity units during the mold-clamping state. A mold-opening device is associated with the second matrix for removably attaching the second cavity units to the first matrix in the mold-clamping state and for removing the second cavity units from the first matrix in the mold-opening state.

Abstract: A metallic mold for molding semiconductor package including a pair of cavity blocks capable of molding two types of semi conductor packages in order to reduce manufacturing cost. The metallic mold includes an upper cavity block to be inserted in its normal state and its turned over state in an upper chase block mounted on a lower surface of a top mold base of an upper mold die which is formed at its upper surface with one type of cavities and at its lower surface with another type of cavities, and a lower cavity block to be inserted in its normal state and its turned over state in a lower chase bock mounted on a bottom mold base of a lower mold base which is formed at its upper surface with cavities mating with the another type of cavities of the upper cavity block and at its lower surface with cavities mating with the one type of cavities of the upper cavity block.

Abstract: The invention relates to an installation for manufacturing registration carriers provided with an injection molding device and with two holders supporting molding plates, which are adjustable with respect to each other between a first position, in which said molding plates bound a mold cavity, into which a material is injected by the injection molding device during operation so as to form the registration carrier, and a second position, in which the molding plates have been moved some distance apart with a view to removing the registration carrier formed. Transport means are provided on either side of the injection molding device, to move a holder supporting a molding plate from a position located at some distance from the injection molding device to a position suitable for cooperation with the injection molding device, and/or from a position suitable for cooperation with the injection molding device to a position located at some distance from the injection molding device.

Abstract: This apparatus, preferably applicable to a molding machine using the core change type dies, is capable of pushing out the inserted core from the mother mold, thereby facilitating the core extracting operation by the robots. A mother mold of a complementary die in the core change type dies is constituted by a main body and an intermediate plate which is disposed behind the main body and to be movable in both the forward and backward directions. A core fixing and releasing mechanism is provided on the intermediate plate. Furthermore, there is provided a push-out device disposed in a clearance formed between the main body and the intermediate plate when the intermediate plate is shifted rearward. The push-out device has its one surface abutting on a front surface of a core and its another surface abutting on a rear surface of the main body.

Abstract: An insert for molding the convex surface of a progressive lens, the insert having an annular shoulder or flat disposed to the rear of the front edge of the concave surface of the insert. The periphery of the insert includes a first cylindrical surface axially extending rearwardly from the front surface of the insert and a second cylindrical surface of larger diameter axially extending forwardly from the rear surface of the insert. The two cylindrical surfaces are joined by the radially extending shoulder. A retainer for the insert is provided with two axially displaced bores of respective diameters slightly greater than those of the two cylindrical surfaces of the insert. Positioned between the bores is a radially extending annular shoulder or flat.

Abstract: An injection molding unit for processing synthetic materials has a changing unit provided with several connecting bores, transversally lockable separately controllable stoppers, for optional connection to supply lines. The stationary connecting bores are arranged at a basic body radially around a central feed opening, which is at least partially bordered by the stoppers when they are out of operation. Consequently the necessary space requirement as well as the effort for running in the stoppers can be reduced.

Abstract: A mold for making bathtubs includes a mold receptor and a deck insert attached to the mold receptor face. The preferred deck insert has at least one projection designed to reduce the cross-sectional area of a portion of a void between the shell's deck and the deck forming face of the insert. Preferably, the distance from the outer edge of the shell's deck to the outer edge of the projection is about 16% of the length of the deck of the sanitary fixture. In an alternative embodiment, the deck insert has at least one outermost projection and at least one non-outermost projection. The outermost projection is preferably about half the height of the non-outermost projection. In another preferred embodiment, the deck insert includes at least one outermost projection and at least one non-outermost projection. The height of the outermost projection varies from a maximum height near the middle of the deck, to a minimum height near the end of the deck.

Abstract: A lower mold attachment plate, on the upper surface of which the fixed mold half is attached, is fixed to a machine base. An upper mold attachment plate, to which the movable mold half is attached in opposite to the fixed mold half, is movable upwardly and downwardly by mold moving cylinders. A rotary disc, which has plural injection cylinder insertion holes in the same circle in vertical alignment with plural injection cylinder insertion holes of the upper mold attachment plate, is rotatably pivoted on the upper surface of the upper mold attachment plate. Plural injection units arranged over the rotary disc in predetermined distances along the circle are joined with the rotary disc as a unit. As the rotary disc is rotated to a divided angular position, a slide fastener chain is conveyed along the extension of the chain travelling path, by a predetermined length at every injection molding by means of chain conveyer.

Abstract: Clogging and prolonged down times are avoided in a pelletizer for paste type materials such as sludge by providing an extruder hopper with at least one, preferably two, lower edge slide gates which can be opened to permit movement of a clogged screen zone out of alignment with the discharge opening of the hopper. The clogging material can be scraped off from the screen portion that is taken out of alignment with the hopper discharge opening. The cutting of the extruded sludge is accomplished by an oscillating lower screen section that slides back and forth below the upper screen section. The upper screen section is provided with two, preferably three zones, two of which are perforated and one of which is unperforated to form a closure for the hopper discharge opening. Screeding non-pelletizable material off the screen surface is accomplished either by a separate screeding device or by operating the slide gate or gates as screeds.

Abstract: A stopping device (37) is provided in a metal mould depository stand (6) and a stop cancelling device (39) is provided in a metal mould replacing carriage (3). When a metal mould (13) supported by the stand (6) is transferred onto the carriage (3), firstly the carriage (3) is moved to a location of the stand (6) a stopped condition of which is going to be cancelled, so as to make an output portion (53) of the cancelling device (39) face an actuating member (44) of the stopping device (37). Then, the output portion (53) is made to advance from a return position (G) to an advanced position (H). Thereupon, the actuating member (44) is changed over to a retracting actuation position (D), so that the actuating member (44) changes over a stopper member (42) to a retracted posture (B).

Abstract: A continuous flow polymer filtration apparatus for replacing dirty filters in an extruder includes a reciprocating slide member secured within a slide channel transverse to a bore. The slide channel has a sealing region adjacent to the bore. The slide member houses two filter assemblies for filtering polymer. Each filter assembly comprises at least one filter element which has a width that is less than the width of the sealing region and the distance between the filter assemblies is less than the width of the bore. The slide member is capable of positioning either filter assembly in line with the bore without interrupting the fluid flow of the polymer as well as positioning either filter assembly off-line in order to replace the off-line filter assembly.

Abstract: In an apparatus for manufacturing molded plastic articles or for manufacturing hollow foamed articles wherein at least two further mold halves are allowed to cooperate alternately with a first mold half, improved accessibility is achieved and a smaller amount of floor space is required by providing a support structure comprising a vertically arranged support axis which has at least one transverse axis on which the further mold halves are pivotably supported by holding devices.

Abstract: A molding device to make molded items from molding compound is provided. The device includes a first mold insert which corresponds to a first portion of a molded item and a first mold insert holder removably holds the first mold insert. A second mold insert is provided which corresponds to a second portion of the molded item and a second mold insert holder is provided which removably holds the second mold insert. The first and second insert holders are connected at one end by a living hinge and a handle extends from the opposite of the first and second holders. In a preferred embodiment, a twist lock is provided for securing the inserts to the insert holders.

Abstract: An improved modular mold having adjustable height shims provided between upper and lower panel sections to adjust the volume and height of a PET beverage bottle. The shims are easily replaced and form part of a high-strength mold set which accepts customized shoulder and base portions.

Abstract: An apparatus for forming a modeling composition includes an extruder assembly for receiving and extruding a quantity of said modeling composition, and first and second mold assemblies of different sizes which are removably receivable on the extruder assembly for receiving modeling composition extruded therefrom. Each of the mold assemblies includes a rear plate portion and a front mold cavity portion which is preferably made of a transparent plastic material and adapted to be assembled with the plate portion thereof so that it cooperates therewith to define a mold cavity for receiving modeling composition therein from the extruder.

Abstract: Encapsulation molding equipment includes individual mold bases each having an elongated shallow recess which receives strip-like carriers supporting semi-conductor chips and like objects for encapsulation. Cavity inserts having various numbers of cavities of different size and dimension individual to carriers having like numbers of chips of a range of size and dimension fit over the strips with each cavity on an insert surrounding the chip to be encapsulated. Gate and vent passages are formed on the surface of the insert spaced away from the mold base member for supply of resin from a central resin receptacle. The mold is completed by an upper mold insert plate which closes the mold and effects a seal between the mold parts and provides for delivery of encapsulating resin to the cavities in the cavity inserts. Each mold base has a plurality of recesses, each of which receives a carrier strip and a cavity insert.

Abstract: A device for feeding dough is provided which has a hopper for receiving dough and directing the dough downwardly to a housing which contains a first rotatable member for engaging and urging the dough downwardly toward a pair of opposed second rotatable members. The second rotatable members have a gap therebetween to receive the dough therethrough and they rotate in opposite directions to urge the dough downwardly therebetween. Both the first and second rotatable members have a surface configuration which enhances engagement between the rollers and the dough. An orifice is provided in the housing below the second rotatable members for receiving the dough from the second rotatable rollers. The dough thus leaves the housing in the form of a continuous cylinder having a diameter of the same size as the orifice.

Abstract: A machine for the production of seating components having a plurality of movable press centers which are moved about by a track to a plurality of workstations where different manufacturing operations are performed. The track is equipped with transfer capability to selectively bypass one or more of the workstations to enable different components to be made simultaneously using different methods. The track can further move a press center off line for repair without interrupting the operation of the machine.

Abstract: A plastic molding apparatus for semiconductor devices includes a first evacuation passage via which an ejector chamber in a lower die chase block is evacuated through a lower die common surface table, a second evacuation passage via which an ejector chamber in the upper die chase block is evacuated through the upper die common surface table, and a third evacuation passage via which a parting chamber on a parting surface between the lower die chase block and the upper die chase block is evacuated through one of the lower die common surface table and the upper die common surface table. Since the evacuation passages are separate and the volume of the evacuation chamber is reduced, evacuation performance is improved and the size of the apparatus is reduced. The plastic packaging performance is also improved.

Abstract: A multi-functional mold which is used for encapsulating chips placed on lead frames is characterized by a chamber arranged in one of the mold halves in which an insert can be replaceably arranged. Depending on the use of the mold in the context of the so-called transfer molding method or injection molding method a different insert is placed in the chamber. In the application as transfer mold the insert includes an elongate member with a bore for guiding a plunger which makes encapsulating material liquid due to the pressure applied thereto and the increasing in temperature. In the application as injection mold the insert includes a member with a through-channel allowing a plasticized encapsulating material coming from a nozzle of an injection molding device to flow into the mold.

Abstract: A divider assembly for removable attachment to a dividing and rounding machine, the assembly including a divider blade formed into a circular geometric pattern, with relatively movable plugs fitted into the openings of the geometric pattern, the blade being affixed to a divider plate having openings and the plugs projecting through the openings. The top ends of the plugs are fitted through a plug plate and have reduced diameter shanks for engagement into keyhole-shaped openings in a lock plate. Two knobs are threadable into the respective plates to hold the entire assembly together.

Abstract: A plastic injection mould capable of producing, at each injection, twenty articles numbered in serie and in high relief. The mould has a fixed plate (2) across which pass two pluralities or groups of tapes (13-18) numbered in mirror image, each plurality passing two series of numbers fixed on the plate. The fixed numbers corresponding to one of the pluralities of tapes are 0, 2, 4, 6, 8, 0, 2, 4, 6, 8 while the numbers corresponding to the other plurality are 1, 3, 5, 7, 9, 1, 3, 5, 7, 9. The tape (18) of each plurality that passes adjacent the fixed numbers contains an even number of series of ten groups of five identical algorisms (0, 0, 0, 0, 0; 1, 1, 1, 1, 1; 9, 9, 9, 9) whereas each of the other tapes contains at least one series of ten groups of ten identical algorisms (0, 0, 0, 0, 0, 0, 0, 0, 0, 0; . . . 9, 9, 9, 9, 9, 9, 9, 9, 9, 9).

Abstract: The present invention relates to the insert for the drum of a device for producing shaped pads from fibrous material. These inserts are attached to a disk of the drum and are designed in accordance with the shape and size of the pads to be produced. To simplify the retrofittability of the device or the drum for the production of pads of another size or shape and the number of drum inserts which must be kept in stock, it is provided that the drum insert consists of a base body, which, in turn, consists of a supporting sheet having several openings and several laminar sheets disposed in the direction of rotation of the drum and at right angles thereto.

Abstract: A mould bar frame for making composite blocks has mould bars for supporting a plurality of individual moulds side by side. Each individual mould has end core liners at each end and divider plates both liners and plates cooperating with the mould bars. The end core liner may be made of two separable elements one of which is reversible to reduce wear. A plurality of lugs on each end of a divider wall ride in corresponding grooves in the mould bars to reduce wear.

Abstract: An annular metal mold portion forming a tire tread is constructed by assembling a plurality of sector metal molds 2 severed in the circumferential direction, and all or some of the sector metal molds 2 are constructed of a plurality of smaller parts 3 severed in the axial direction as well as in the circumferential direction. Joining surfaces between the sector metal molds themselves each consisting of a plurality of smaller parts are formed of contour surfaces in arbitrary shape of the smaller parts. These contour surfaces are such curved surfaces that at every location a radius of curvature is 5 mm or larger and an inclination angle of a tangential plane with respect to a tire axis is 80 degrees or less.

Abstract: An injection molding machine includes a sub-mold hollow structure defining a plurality of sub-mold hollows which are formed in at least one of a fixed-side base plate and a movable-side base plate with a keyway being formed in the base plate in which the sub-mold hollow structure is formed. A changeable sub-mold is detachably mounted in each of the sub-mold hollows, and a comb-shaped fixing key is detachably engaged in the keyway and fixes the changeable sub-molds when the comb-like fixing key is inserted into the keyway.

Abstract: Method for selectively rotationally molding an industrial drum in either a closed-head configuration or an open-head configuration within a mold constructed for selective modification to accomplish molding of the drum in either selected configuration by inserting or deleting a separator between a first mold cavity for forming the body of the drum and a further mold cavity for forming the head of the drum, the further mold cavity being selected from alternate second and third mold cavities, such that both the body and the head are rotationally molded simultaneously within the mold during molding of either configuration of the industrial drum.

Abstract: A method of shaping an extruded section of polymer directly onto the surface edges of a glazing or glass plate. In one embodiment, a rotatable plate member having a plurality of calibrated die cross sections is placed in front of the exit orifice of an extrusion die. The plate member is rotated to obtain, an extruded section having different profile cross sections and the flow rate of the polymer through the die is controlled in response to the position of the plate member so that the amount of polymer being fed corresponds to the respective profile section being extruded. In another embodiment, an obturating slide member is placed in front of an extrusion die exit orifice sized to correspond to the largest desired profile cross section. To produce abrupt changes in profile cross section, the slide is moved quickly at predetermined locations along the path of the extrusion die. To produce a continuous transition between profile sections, the slide is moved slowly during extrusion.

Abstract: Process and device for drawing off and blocking off a melt, especially of plastic material, with a heatable melter (1) fitted with a blocking valve (3) acting as a melt distributor from which the melt flows into a nozzle plate (10) which divides the melt by means of nozzles (14) into a plurality of threads, whereby the temperature of the melter and nozzle plate is regulated separately and the blocking valve is closed to block the melt off and the nozzle plate is tightly closed off by a cover (18). To draw off the melt with the blocking valve open, the temperature of the melter and the nozzle plate is kept substantially at the same level and to block off the melt with the blocking valve closed the nozzle plate is taken to a temperature just above the solidification temperature of the melt material.

Abstract: A master frame supports interchangeable mold inserts, each of which is provided with its own electrical heater and associated wiring. A recess is provided in the master frame to allow for lateral movement of the wiring, heater and mold inserts as a unit during installation and replacement. A closure member in the form of a thermocouple retainer is provided to support a temperature-controlling thermocouple inwardly of a hole within each mold insert as well as to close the recess during a molding operation.

Abstract: An improved modular mold having adjustable height shims provided between upper and lower panel sections to adjust the volume and height of a PET beverage bottle. The shims are easily replaced and form part of a high strength mold set which accepts customized shoulder and base portions.

Abstract: A header pallet for the manufacture of the spigot of a concrete pipe to receive a sealing gasket during assembly of a pipe line including an outer header ring having an end leg portion and a side leg portion to cooperatively form a substantially L-shaped profile wherein the intersection of the inner surface of the end leg portion and the inner surface of the side leg portion are contoured to form a concave surface and a shoulder is formed on the inner surface of the side leg portion in spaced relationship relative to the concave surface, a removable compressible intermediate ring having a substantially arcuate profile including an outer convex surface, and a removable inner snap ring having a substantially rectilinear profile such that the removable inner snap ring is placed to engage the shoulder in spaced relationship relative to the end leg portion and the removable compressible intermediate ring is press fitted between the removable inner snap ring and the end leg portion with the outer convex surface the

Abstract: An automatic sub-mold changer for use in an injection molding machine having a pair of molds in which sub-molds are detachably installed in an open state of the molds includes a sub-mold stock device for stocking plural sub-molds therein, the sub-mold stock device being spaced from the pair of molds on the injection molding machine. An arm device having an end portion which carries chucks to which the sub-molds are detachably affixed is movable between a first position juxtaposed to the sub-mold stock device and a second position juxtaposed to the pair of molds on the injection molding machine.

Abstract: An extrusion die assembly, adapted to be secured to the discharge end of an extruder, for producing extruded products having different sizes and/or shapes from a single extruder without interrupting the operation of the extruder. The die assembly includes a block having an inlet duct to receive thermoplastic material discharged from the extruder, and a pair of discharge ducts which diverge axially from the inlet duct and terminate in a pair of spaced die plates. A cylindrical diversion valve is rotatably mounted in the die assembly at the convergence of the outlet ducts and the inlet duct, with the valve having an angled passage extending therethrough for directing the flow of thermoplastic material from the inlet duct into one of the outlet ducts. The diversion valve enables thermoplastic material to be diverted from one die plate to the other without interrupting the operation of the extruder.

Abstract: The components forming the layers of a composite pipe are successively introduced into a rotary drum (1). Initially, a plastic reinforcing layer (8), including a fibre reinforcement, is introduced into the drum, the ends of the drum (1) being bounded by rings. A concrete core layer (16) is then introduced and the length of the core layer (16) is shortened relative to that of the drum (1) by shaping rings fixed to the drum ends. The shaping rings are then replaced by other shaping rings (20, 21) so that, on either side of the core layer (16), two annular spaces (22, 23) are formed which are filled by a socket material (24, 25) of the same composite as the reinforcing layer (8). Thus, at one pipe end a socket end (28) is formed and at the other pipe end a spigot end (30) is formed, each such end being located within the composite pipe wall thickness. After introducing a second reinforcing layer (26), the production of the composite pipe is completed.

Abstract: An apparatus is provided for forming a miniature pot. A pottery wheel has a diameter no larger than two inches and rotates about a vertical axis. The wheel has a facing flat surface for supporting the miniature pot. A motor is coupled to the wheel for rotating the wheel about the axis at an adjustable rotational speed of between 200 and 10,000 revolutions per minute. A support base contains the motor and further includes a power source. The wheel extends above the base, and preferably includes the rotor portion of the motor. The wheel further includes a disk shaped platform and a support shaft. The platform is disengagable from the shaft so that a replacement platform may be engaged with the shaft. The platform further includes a clay preform attached to the surface of the platform. The apparatus is preferably small and light weight enough so that it may be supported by a hand and easily carried therein.

Abstract: Disclosed is an apparatus which allows for selective employment of a plurality of collapsible support cores to provide shoring support to the interior walls of cabinets during insulating thereof. The cores can be selectively interchanged to utilize a core which corresponds to the size and shape of the particular cabinet to be insulated. Each of the support cores are insertable into the interior section of a cabinet and expanded therein to position a plurality of shoring panels, including separate corner shoring panels, into supporting engagement with the interior walls of a cabinet during insulating to prevent bulging of the interior walls associated with the insulating. After insulating, the core panels are retracted away from the cabinet interior walls so that the core can be inserted into and removed from the cabinet interior without contacting the interior surfaces during insertion nor removal.

Abstract: Single and double injection molding using a single molding machine is made possible by providing two injection units, each having an injection nozzle, and a stationary platen three insertion holes into which the nozzles can fit. For double injection, the injection units are moved transversely of the stationary platen so as to orient both injection nozzles with a respective one of the insertion holes. For single injection, the injection units again are moved transversely of the stationary platen so as to orient one of the injection nozzles with one of the insertion holes, with the other nozzle not being so oriented.

Abstract: A segmented barrel extruder device for extrusion and having a plurality of segments enclosing an extruder barrel aligned on an axis. The segments include axially perpendicular rectangular end flanges having exposed sides and a central portion for housing an extruder barrel. The flanges have aligned straight line paths for fluid flow in a plane perpendicular to the axis. Accordingly, the paths each intersect two exposed sides without intersecting the central portion. The segments also include an extruder bore between the flanges. The segments have a housing having straight axial channels which are connected to the paths in the flanges to conduct fluid from points along one path in each path to of points along a corresponding path. The extruder bore also includes a centered portion aligned with the flange central portion and a radial feeder device. The radial feeder device includes a seal and a mount which is adapted to mount the seal without sealing force on the bore.

Abstract: A segmented barrel extruder device for extrusion and having a plurality of segments enclosing an extruder barrel aligned on an axis. The segments include axially perpendicular rectangular end flanges having exposed sides and a central portion for housing an extruder barrel. The flanges have aligned straight line paths for fluid flow in a plane perpendicular to the axis. Accordingly, the paths each intersect two exposed sides without intersecting the central portion. The segments also include an extruder barrel between flanges. The segments have a housing having straight axial channels which are connected to the paths in the flanges to conduct fluid from points along one path in each path to of points along a corresponding path. The barrel extruder also includes a centered portion aligned with the flange central portion. There is also provided an extruder barrel insert sized to fit in the centered portion of the barrel having a key for preventing rotational movement.

Abstract: An apparatus for making metal powders has a supply tank (2) for the molten starting material, at least one exchangeable pouring funnel (11, 13), at least one atomizing nozzle (12, 14) and at least one fall shaft (7) disposed thereunder for the solidification of the metal powder product. A chamber (1) enveloping the supply tank and the pouring funnel is disposed on the fall shaft (7). To be able more easily to change the pouring funnel or funnels, the chamber (1) has in the area of the pouring funnel a closable lateral opening (15), at which a lock chamber (16) for the introduction of the at least one pouring funnel (11, 13) is placed. A car (24) is held on tracks (18, 19) and can be driven into the chamber (1) and fully retracted into the lock chamber (16), and on its bottom is fastened a number of atomizing nozzles (12, 14) corresponding to the number of the pouring funnels (11, 13). The pouring funnels (11, 13) can be set downwardly onto the cars.

Abstract: An embossing apparatus in an extrusion line for the production of sheet extrusions like vinyl siding, can include a revolver above the backing roll and supported in a pair of cradles so that selected embossing rolls can be juxtaposed with the backing roll and can define the embossing gap therewith. The revolver is indexed in position by pneumatically-operated locking members on the cradles. The revolver allows embossing roll change on the fly, if desired.

Abstract: An apparatus is disclosed for producing granules or pastils from a flowable material of varying viscosity wherein material is supplied to a pressing nip between a rotating hollow roll (1) having internal teeth and an externally toothed ejection roll (2) in engagement with said hollow roll. Provided in the hollow roll (1) are bores (5) which extend from the respective teeth bottoms of the internal toothing to the outer side of the hollow roll (1) and through which the material is expelled on engagement of the ejection roll (2) and deposited in the form of pastils or granules on a cooling surface (13). On the outer periphery of the hollow roll (1) a jacket tube (3) may be positioned the jacket tube having bores which align with the bores (5) of the hollow roll (1), the jacket bores also having a reduced cross-section compared with the bores of the hollow roll to permit adaption of the apparatus to the viscosity of the flowable material to be processed.