Abstract: The invention concerns in particular a mold for injection molding of a flexible tube, said mold comprising as molding tools, a nozzle receptacle, an impression and a core, housed in a stack of plates. The invention is characterized in that said molding tools have pairs of respective conical support surfaces, through which the tools are centered and aligned with one another, each support surface being formed by a portion of tools deprived of transverse mobility.

Abstract: An energy efficient drive system is provided for use on typical injection molding machines whereby a single electric motor drives both the extruder screw and a hydraulic motor that continuously charges a hydraulic accumulator during the extrusion process. During the injection cycle, the charge in the accumulator is directed to stroke the extruder screw and inject melt into the mold cavities. Another embodiment utilizes a similar arrangement on the clamp mechanism of the injection molding machine whereby the charge in the accumulator is directed to hold the mold closed during the injection cycle.

Abstract: A mold plate for a reciprocating mold plate food patty-forming apparatus has at least one laterally contoured region extending longitudinally. The contoured region has a raised top surface and a raised bottom surface. The mold plate has at least one cavity through the contoured region. A support plate has a recessed top surface extending longitudinally and corresponding in shape to the raised bottom surface of the mold plate and a fill opening in communication with the cavity when the mold plate is in the fill position during reciprocation of the mold plate. A breather plate has a recessed bottom surface extending longitudinally and corresponding in shape to the raised top surface of the mold plate. The top and bottom recessed surfaces of the support and breather plates respectively together form a longitudinal channel that closely conforms to the contoured region of the mold plate.

Abstract: A system, method, and apparatus for preparing an absorbent core for use in absorbent garments is disclosed. The apparatus includes a funnel having a first end and a second end, the second end being narrower in diameter than the first end, and a nozzle having a straight section, a curved section, and a tip. The straight section of the nozzle is operatively associated with the second end of the funnel. The apparatus further includes a diverter plate operatively associated with the curved section of the nozzle. The invention provides a more uniform distribution of super absorbent particles within the fluff pulp used to make the absorbent core, thus improving performance of the absorbent core. An absorbent garment made using an absorbent core made with the apparatus of the invention also is disclosed. The absorbent garment provides better leakage protection than absorbent garments incorporating conventional absorbent cores.

Abstract: The invention relates to a portioning apparatus and a method. The apparatus includes a hopper and augers to push flowable material to a rotor. Retractable vanes on the rotor push the flowable material toward a fill slot as the rotor rotates. Below the fill slot, there is a mold plate with front and back mold cavities. In a front fill position, the mold plate is positioned so the front mold cavities are filled with flowable material from the fill slot while flowable material in the back mold cavities are pushed out by back knockouts. In a back fill position, the flowable material in the front mold cavities are pushed out by front knockouts while the back mold cavities are filled with flowable material from the fill slot. The mold plate reciprocatively oscillates between the front fill position and the back fill position for high output of portioned material.

Abstract: In a resin encapsulation system, one or more middle molds remain free without being mechanically connected with an upper mold and a lower mold. The middle mold is circulated, by a middle-mold conveying mechanism, among a molding press, a middle-mold preheating unit, a middle-mold cleaning unit, and an ejecting pressing unit adapted to separate an encapsulated object, a runner, and a gate from the middle mold. Resin encapsulation molding is performed in the circulating process described above.

Abstract: A prior top fill food processing machine is converted to increase production without increasing operating speed. A tooling set and a drive mechanism cooperate to increase the mold plate stroke and fill area. The tooling includes a fill plate and a breather plate with increased lengths that accommodate the increased mold plate fill length and stroke and that assure adequate seal-off. The pump box top plate of the prior machine is unchanged and serves as a reference for dimensioning the tooling set. The fill plate and breather plate extend in longitudinal directions from front and back edges of the top plate. The tooling is changeable into different combinations of mold plate cavity numbers and sizes and also different configurations for the fill plate fill slots. In a preferred embodiment, the mold plate fill area is increased 42 percent and the stroke is increased 33 percent relative to the prior machine.

Abstract: A patty-displacing end portion is provided for a plunger for a food patty-molding apparatus, the apparatus comprising an apparatus frame, a mold plate, the plunger and a heating element. The mold plate has at least one cavity and is mounted to reciprocate with respect to the frame in a longitudinal direction to position the cavity between a rearward, fill position wherein the cavity is filled with food product material to form a molded patty, and a forward, molded patty knockout position. The plunger has a patty-displacing end portion arranged to move vertically into the cavity to knock the molded patty out of the cavity. The heating element is typically arranged to heat the patty-displacing end portion to about 180 to 210° F. The patty-displacing end portion is composed of plastic. Preferably, the patty-displacing end portion is composed of a thermoplastic that retains structural strength up to 210° F.

Abstract: A front plate and rear plate are connected to each other through a plurality of the bars. An intermediate plate is arranged between the front plate and the rear plate and guided by the tie bars to be movable. The front plate is fixed to a slide table. The rear plate and intermediate plate are supported by a linear slide guide on the slide table. A rear end portion of a barrel is fixed to a central area of the front plate. A rear end portion of a screw is supported by the intermediate plate with a bearing in between. A ball screw is incorporated in the rear plate and a forward end of a threaded rod of the ball screw is fixed to a central area of a back surface of the intermediate plate through a load cell.

Abstract: An injection mold includes: a fixed mold having a passage for introducing a fluid therethrough and an internal space; a movable mold detachably attached to the fixed mold and forming a molding space together with the internal space of the fixed mold; and a flow accelerating means provided on an inner wall of the molding space and accelerating flow of the fluid. A molding system having the injection mold, a molded product by the molding system and its molding method are also disclosed. Since a glossy surface is formed at the outer surface of a plastic product, a molded product, without a weld line or a gas flow mark, the external appearance is fine and the mechanical strength is enhanced. In addition, since no surface processing equipment or process is required to make the external appearance of the plastic product fine, the structure can be simplified, a stability can be heightened, a cost for installation of equipment can be reduced, and a fabrication process can be reduced.

Abstract: A patty-forming apparatus includes a mold plate having patty-forming cavities and a breather plate arranged over the mold plate. A fill slot is arranged below or above the mold cavities to fill food product into the mold cavity when the mold plate is in a fill position. The breather plate, arranged on a side of the mold plate opposite the fill slot, includes a fill recess open toward the mold plate and arranged to be in registry with the cavities when the mold plate is in the fill position to increase a transverse food product flow area along the longitudinal direction to assist filling of the cavity with food product.

Abstract: A nozzle-contacting device of an injection molding machine includes an injection module and a mold-holding structure both set on a lathe bed. The injection module sets a nozzle at a front end thereof and a nozzle-adjusting device, which is fixed and locked on the lathe bed, at a back end thereof. The mold-holding structure includes a mold-clamping structure and an adjusting plate, wherein the mold-holding structure sets plural tie rods. A mold is fixed and locked on the adjusting plate which is sleeved on plural tie rods, and one or more driver set on a front end of a dead plate penetrates the dead plate to connect to the adjusting plate. Furthermore, the dead plate has a perforation set on a centre thereof corresponding to a position of the nozzle of the injection module.

Abstract: This invention consists of a new cost effective injection molding apparatus for molding with hot melt adhesives and other Polyamide materials. Manufactured from standard tubing components in a double “L” or “C” design, it has fewer moving parts than other molding machines therefore requiring less maintenance. It is specifically designed to not require the use of temperature limiting and maintenance prone heated hoses for transport of melted material or sliding injection nozzles for engagement into mold-set by utilizing a substantially fixed injection nozzle. It incorporates a self-draining melt reservoir with single-side mounting to allow for heat expansion and has very short material transfer distance from reservoir to mold-set. It can utilize permanent nozzle engagement into the mold-set to simplify molding operation and reduce cost. It incorporates several safety features to protect operators against injuries.

Abstract: Centering of an injection heating cylinder and screw driver is provided even after assembly, using an electric injection mechanism with height adjustment for the screw driver. A front plate is provided with an injection heating cylinder having a screw installed inside at the front middle and a rear plate is provided with are electric motor for injection-driving. The plates are affixed to an installation member. The front and rear plates are linked by guide bars installed between them. The screw driver is inserted into the guide bar and movably disposed between the plates. A driving mechanism connected to an electric motor is composed of a ball screw shaft and a ball nut member, and is installed over the screw driver and the rear plate. A centering member slidably supports the screw driver 10 and, moreover, provides height adjustment, and is installed at the sides of the screw driver.

Abstract: In a method for the internal cooling of a rotating object (4), liquid gas from at least one inlet channel (61) in a fixed object (5) is pressed into a ring-shaped groove (62) located between the fixed object (5) and the rotating object (4). From the ring-shaped groove (62) the liquid gas is pressed into at least one channel (63, 64.1, 64.2) in the rotating object (4) and brought to a part to be cooled (15). The liquid gas, upon contact with the part, evaporates and expands while absorbing heat, thereby cooling the part. The area surrounding the part to be cooled (15) may be designed as an expansion chamber (65). The method can be used to cool molded parts in injection molding machines with rotating molds (1), thereby achieving shorter cycle times.

Abstract: A system of manufacturing a molded article includes a mold having first and second parts engagable to one another to form a cavity. A first mold part is fixed to a mold station. The second part of the mold is movable between a spray station adjacent the mold station. An enclosure disposed between the mold station and the spray station contains emissions from the spray station so that the mold station is not contaminated. The molded article is fabricated by applying a surface coating at the spray station into, shuttling the movable part of the mold into alignment with the fixed part of the mold, and filling the mold with a settable mixture. The second part of the mold is released from the first part, and shuttled back to the spray station for demolding of the completed molded article.

Abstract: An injection molding machine with a vertically operating clamp mechanism is provided with a pair of locking devices on the upper movable platen to lock the locking rods for high tonnage clamping forces. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always “on” arrangement. A power on actuator is provided to release the locking device for raising and lowering the movable platen. A vertical ladder frame is provided for guiding the movable platen when it is raised or lowered. Additionally, a lift mechanism is provided for a rotary table carrying the lower mold halves.

Abstract: Apparatus for handling and cooling preforms, comprising a collection and translation element (2) provided with a plurality of receptacles (10) arranged according to a definite geometrical distribution pattern and adapted to accommodate a corresponding plurality of preforms (30), as well as a cooling element (3). Said collection element is displaceable from a preform loading position to several distinct positions, arranged above said cooling element, which is provided with a plurality of cups collected into a plurality of distinct, but similar geometrical distribution patterns that are translated with respect to each other in such a manner as to prevent them from interfering with each other.

Abstract: In an injection compression molding apparatus and an injection compression method according to the present invention, the structure of the dies can be simplified and a loss of resin as well as of heat due to solidification of the resin in the path at the time of molding can be eliminated. Further, injection pressure loss can be reduced when melted resin is injected into a cavity. A resin injection hole in a nozzle that is attached to an injection device is connected at a position between a stationary die and a movable die directly to the cavity that has a larger volume than a volume of a molded product by means of the movable die, melted resin is injected into said cavity directly from said resin injection hole by said injection device, then the movable die is moved, in the die closing direction, to reduce the distance of the connection between said resin injection hole and said cavity by means of a side wall of the movable die, and to reduce the volume of the cavity so as to compress said melted resin.

Abstract: The present invention generally provides an improved meat patty forming apparatus and method of operating the same. More particularly, the present invention provides an improved apparatus and method for forming meat patties using a mold plate having multiple rows or groups of patty forming cavities. An existing single row forming machine is modified by moving the fill slot relative to the existing stroke length so that the fill slot comes in contact or fluidly communicates with at least one newly added row of cavities. This is most easily achieved by modifying the existing fill plate and by adding cavities to the existing mold plate, so that the combination of modified plates operates with the existing stroke length (which is difficult to change), to produce multiple rows of consistent meat patties.

Abstract: The present invention is an apparatus and method pertaining the food patty production. The present invention allows high output production of food product patties at reduced machine operating speeds. This is accomplished by effectively utilizing a mold plate with multiple rows of patty cavities. Thus, more patties can be molded at slower operating speeds. This aspect of the present invention reduces normal wear and tear on machines resulting in high efficiency output. The present invention operated at reciprocating frequencies lower than those used in machines known in the industry can potentially increase output by two-fold, or more. The present invention is also designed to produce patties of uniform size, weight and texture thereby promoting consistent cooking and food safety. This is accomplished by a (1) specified operation timing sequence and (2) custom designed fill slots which serve as a conduit between a food product source and a patty cavity.

Abstract: An injection mould which comprises at least five modules aligned with each other. The five modules correspond to a first mould module and a second mould module to form a product cavity, a drive module for driving of sliders, an engaging module adapted, by application of a force, to prevent dividing between the first and the second mould module when introducing product material into the product cavity, and an ejector module for ejecting a completed product from one of the first and the second mould module.

Abstract: In order to increase the output, a device for producing ground meat patties of beef and/or pork comprises a shaping plate that can be moved out of a filling position in a shaping station into an ejecting position outside the shaping station, the shaping plate having holes that are disposed offset relative to each other in moving direction in two rows, one behind the other, a device by means of which the ground meat can be supplied under pressure via filling slots associated to each hole into the holes on the underside, said holes being covered at the top by means of a ventilation plate, an antilipbar serving to reduce the excess pressure that is disposed in the delivery area of the shaping station and having a continuous longitudinal slit and an ejection device disposed outside the shaping station above the ejecting position of the shaping plate having ejection cups whose quantity and position is coordinated with the holes 24 in the shaping plate.

Abstract: A mold plate assembly for a patty-forming apparatus includes a reciprocating mold plate having patty-forming cavities, with at least two rows of cavities aligned in a longitudinal direction, and a fill plate arranged facing the mold plate. The mold plate reciprocates between a cavity fill position and a patty discharge or knock-out position. Fill slots are arranged through the fill plate to fill food product into said mold cavities when the mold plate is in the fill position. A valve plate is provided facing the fill plate and having valve openings corresponding to the fill openings of the fill plate. The valve plate is reciprocated between an open and a closed position, to fill food product into the mold cavities when the mold plate is in the fill position, and the valve plate is in an open position, or to prevent flow through the fill openings when the valve plate is in the closed position.

Abstract: The present invention generally provides an improved meat patty forming apparatus and method of operating the same. More particularly, the present invention provides an improved apparatus and method for forming meat patties using a mold plate having multiple rows or groups of patty forming cavities. An existing single row forming machine is modified by moving the fill slot relative to the existing stroke length so that the fill slot comes in contact or fluidly communicates with at least one newly added row of cavities. This is most easily achieved by modifying the existing fill plate and by adding cavities to the existing mold plate, so that the combination of modified plates operates with the existing stroke length (which is difficult to change), to produce multiple rows of consistent meat patties.

Abstract: A multilayer tube shoulder and method for manufacture wherein a first material component is injected into a cavity (22) and then removed from the cavity on a support (12) while in a partly-plastic state. Thereafter, following insertion of the first material component into a second cavity (23), a second material component is injected around the first material component, and thereby leads to a positive connection between the first and second material components.

Abstract: A method and apparatus for producing a contact lens material having two opposite lens-forming surfaces is disclosed. A first resin mold having a molding surface providing one of the opposite lens-forming surfaces of the contact lens material is injection-molded by closing a first and a second die to define at least one mold cavity and injecting a resin material into the mold cavity. A second resin mold having a molding surface is injection-molded by closing a third and a fourth die to define at least one mold cavity and injecting a resin material into the second mold cavity. The dies are separate away from each other and molding material is introduced into one of the resin molds which are held on one of the respective dies. The dies holding the first and second resin molds are moved relative to each other to assemble the first and second resin molds to define a mold cavity for the contact lens material.

Abstract: A mold plate assembly for a patty-forming apparatus includes a reciprocating mold plate having patty-forming cavities, with at least two rows of cavities aligned in a longitudinal direction, and a fill hole located rearwardly of the cavities. The assembly includes a bottom fill plate and a top fill plate structure arranged facing opposite sides of the mold plate. The mold plate reciprocates between a cavity fill position and a patty discharge or knock-out position. Outlet slots are arranged through the top fill plate structure to deliver food product into said mold cavities when the mold plate is in the fill position. During filling of food product into the cavities, a pressurized food product flow distribution path is established through the bottom fill plate, through the fill hole of the mold plate, through the top fill plate structure, through the outlet slots and into the cavities.

Abstract: A molding die drive unit capable of both of compressing and expanding (volume enlargement) molten resin in molding die and having thin shape and superior mechanical efficiency, molding unit and molding process are provided. A molding die drive unit 20 for advancing and retracting a movable die 10B relative to a cavity 10C has a large-diameter main cylinder unit 21, and a plurality of small-diameter sub cylinder unit 22 disposed around the main cylinder unit 21. After loading the molten resin, the cylinder units 21 and 22 are driven to advance and retract the movable die 10B to the cavity 10C to compress or expand the molten resin in the cavity to conduct molding process.

Abstract: A mold plate assembly for a patty-forming apparatus includes a reciprocating mold plate having patty-forming cavities, with at least two rows of cavities aligned in a longitudinal direction, and a fill hole located rearwardly of the cavities. The assembly includes a bottom fill plate and a top fill plate structure arranged facing opposite sides of the mold plate. The mold plate reciprocates between a cavity fill position and a patty discharge or knock-out position. Outlet slots are arranged through the top fill plate structure to deliver food product into said mold cavities when the mold plate is in the fill position. During filling of food product into the cavities, a pressurized food product flow distribution path is established through the bottom fill plate, through the fill hole of the mold plate, through the top fill plate structure, through the outlet slots and into the cavities.

Abstract: A patty forming machine includes a frame structure supporting a compartment which encloses a mechanical reciprocating device, the compartment having a front wall. A mold plate locate outside of the front wall includes cavities for receiving food product for the formation of patties. At least one drive rod having a circular cross-section penetrates the front wall and connects the mold plate to the reciprocating device. The machine also includes a vacuum bar assembly having a vacuum bar for interleaving flexible paper sheets with formed patties. The vacuum bar is driven by a reciprocating rod having a round cross-section and penetrating through the front wall of the housing to operatively connect the vacuum bar to the reciprocating device. The frame structure of the machine is underlied by a bottom skin which is spaced below a horizontal frame to provide an access gap for clear viewing and maintenance of a top of the bottom skin.

Abstract: A mold plate assembly for a patty forming apparatus includes a mold plate having patty forming cavities and a breather plate arranged facing the mold plate. A fill slot is arranged facing the mold cavities, on a side opposite the breather plate, to fill food product into said mold cavity when the mold plate is in a filling position. The breather plate includes first breather holes at a remote position from the inlet slot to discharge air to ensure an even and uniform filling of the food product into the cavity, and second breather holes located close to the fill slot to relieve filling pressure at that location to avoid the formation of a ridge on the finished formed food patty.

Abstract: An apparatus and method for injection molding including at least one nozzle capable of injecting a molten material, and a shuttling system with a first mold part and a second mold part. The first mold part has at least one injection cavity for receiving molten material that is aligned and in communication with the at least one nozzle. The first mold part also has at least a pair of cooling chambers flanking the at least one injection cavity. The second mold part has a laterally moveable shuttle plate with a first mold core and a second mold core. The first and second mold cores are capable of being aligned with and inserted into both the at least one injection cavity and the cooling chambers.

Abstract: A mold fill plate and mold fill assembly are characterized by a mold fill plate and mold shuttle plate each being a planar body defining a longitudinal extent and a transverse extent and each having a plurality of elongate slots arranged so that when the slots are in registry a flowable food product can pass through the slots into a mold chamber, the slots further being arranged along at least a portion of their longitudinal extent with each slot extending across at least a portion of the transverse extent.

Abstract: A patty forming machine includes a mechanical compartment having a front wall and surrounding a reciprocating device, a reciprocating mold plate having cavities for forming patties, and a reciprocating knock-out device for knocking the patties from the mold plate. The knock-out device includes vertically reciprocating knock-out rods, knock-out bar arms connected to the knock-out rods, a bar connected to the knock-out bar arms, and a plurality of cups connected to the bar. The knock-out rods are guided both above and below the knock-out bar arms for vertical reciprocating movement. The knock-out rods are connected together by a tie rod and clamp blocks located at opposite ends of the tie bar. The knock-out rods are driven into vertical reciprocation by knock-out arms which are driven to pivot by rotating cams.

Abstract: A plurality of semi-molded products (H, J, K) are formed in a slide mold (20) and slide cores (30, 30′) simultaneously in the step of primary molding. Then, the slide cores (30, 30′) are opened in the condition that the semi-molded products (H, J, K) remain in the slide mold (20) and the slide cores (30, 30′) respectively. Then, the slide mold (20) and the slide cores (30, 30′) are slid so that the semi-molded products (H, J, K) are collected into a predetermined position. Then, a molten resin is injected into joint portions of the semi-molded products (H, J, K) collected and clamped, so that the plurality of semi-molded products (H, J, K) are integrated with one another in the slide mold (20) and the slide cores (30, 30′) in the step of secondary molding to thereby obtain a molded product (S).

Abstract: A method for molding composite items, constituted by beads of sintered expanded resin and by inserts, comprising the steps of: using a movable half-mold and first and second half-molds which can perform a translational motion at right angles to the direction of motion of the movable half-mold; performing the molding operation by means of one of the translatable half-molds mated with the movable half-mold, translating the translatable half-mold from a position for accessing the half-mold to a molding position, simultaneously accessing the other one of the translatable half-molds when the other one of the translatable half-molds is located at the region for access to the translatable half-mold.

Abstract: A patty forming machine includes a frame structure supporting a compartment which encloses a mechanical reciprocating device, the compartment having a front wall. A mold plate locate outside of the front wall includes cavities for receiving food product for the formation of patties. At least one drive rod having a circular cross-section penetrates the front wall and connects the mold plate to the reciprocating device. The machine also includes a vacuum bar assembly having a vacuum bar for interleaving flexible paper sheets with formed patties. The vacuum bar is driven by a reciprocating rod having a round cross-section and penetrating through the front wall of the housing to operatively connect the vacuum bar to the reciprocating device. The frame structure of the machine is underlied by a bottom skin which is spaced below a horizontal frame to provide an access gap for clear viewing and maintenance of a top of the bottom skin.

Abstract: A process and a device for duplicate molding on at least one part of a glazing, placed in a mold, particularly a monolithic or laminated glazing, of glass and/or of transparent plastic, by injection of plastic has at least two stations: a main station for the pressurization of a first mold, the injection of a plastic and the release of the molding pressure of the mold. Additional operations are being performed on a second mold at an auxiliary station. Transfers of the molds from the auxiliary station to the main station and vice versa are provided.

Abstract: An apparatus for molding food products of a moldable food material having a molding compartment, a feeding device for feeding the food material to the molding compartment and a molding plate with a mold cavity. The molding plate is moveable between a forwarding position in which the mold cavity communicates with the molding compartment via a molding opening, and an ejection position, in which the mold cavity is open towards a base. A plunger assembly fills the mold cavity with the food material from the molding compartment via the mold opening, and a piston ejects a food product molded in the mold cavity from the molding plate in the ejection position. A common, programmable control unit predetermines the periodical movements of the feeding device, the plunger assembly and the molding plate as a function of time in the form of separate movement patterns.

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

Abstract: An injection-molding apparatus comprises a mold (3) having a first and a second mold section (5, 7). A bounding surface (13) of the second mold section (7) is in contact with a base (19) of the injection-molding apparatus. A movable punch (81) for severing a sprue slug from the product and an ejector for ejecting the sprue slug from the punch have been provided in the second mold section. The injection-molding apparatus further comprises an arrangement (93, 99) for moving the punch and the ejector. This arrangement is externally of the mold inside the base. As a result of this, the mold can be of compact construction and no connection lines for moving the punch and the ejector are required, so that the mold can be removed rapidly from the injection-molding apparatus. The punch (81) and the ejector (91) have been divided at the location of the bounding surface (113).

Abstract: In the case of an injection molding machine for processing plasticizable materials, a structural unit, which includes at least a movable mold carrier, a stationary mold carrier and a closing arrangement of a mold closing unit, is supported on support elements on a machine base. A pivotal axis, about which the structural unit is pivotable, extends transversely relative to a closing axis. A drive unit is provided for pivoting and for displacing the structural unit and is connected pivotally to the machine base and at an articulation point to the structural unit, which articulation point is disposed at a spacing from a pivotal axis. Upon transferring the structural unit from the horizontal position into the vertical position, the drive unit initially pivots the structural unit and then also displaces it.

Abstract: A method for manufacturing hollow parts using a mold assembly including a movable mold having a male die and a female die for shaping two split halves, respectively, of the hollow part and being mounted on a movable platen and a sliding mold capable of movement between two positions within a horizontally moving sliding mold guide and having a female die and a male die that face the male die and the female die, respectively, the method comprises the steps of: injecting a molten resin into a pair of cavities formed between the opposing male die and female die and between the opposing male die and female die through a primary sprue in the sliding mold, thereby forming split halves; separating the movable mold from a fixed mold together with the sliding mold guide so that a resin sprue runner portion that has solidified within the primary sprue is knocked out of the mold assembly and then sliding the mold so that the split halves left within the respective female dies will face each other; bringing the movable an

Abstract: In the production of a nozzle cartridge with a nozzle formed thereon in a hollow mold, in which a core (26) is located, a centering of the core (26) occurs in an injection phase by means of webs (40) provided on the hollow mold, with a conical centering surface (39) of the core (26) abutting against them. In a subsequent supplementary filling phase, the core (26) or an interior core (28) is withdrawn, the melt flowing over the webs (40) and forming a closed wall in the area of the nozzle base.

Abstract: A shuttle system for a vertical injection molding machine provides two carrier members slidably mounted to the upper surface of a platform of the vertical injection molding machine. A detent attached to the bottom of each of the carrier members mates with a slot associated with each of the carrier members to restrict the motion of the carrier member and define the travel path of the carrier member. The travel paths lie at an angle to one another and deliver the carrier members between a common aligned position and separate offset positions. The aligned position is the position of the carrier member in which a lower mold half attached to the carrier member is aligned with the upper mold half for completion of the mold and injection. The offset positions are nearer the front side of the vertical injection molding machine than the aligned position so that the carrier members move toward the front side between injection cycles.

Abstract: A method of injection-molding a thermoplastic resin, which involves the steps of(a) injecting a molten resin of a thermoplastic resin into a cavity provided in a mold composed of a fixed mold member and a movable mold member,(b) introducing a predetermined amount of a coating material into between the resin in the cavity and the cavity wall after the injection of the molten resin is completed, to allow the resin in the cavity to be compressed with the introduced coating material and/or to allow the movable mold member to move in the mold-opening direction, and(c) maintaining a molding pressure before the mold releasing at a level higher than 0 kgf/cm.sup.2.

Abstract: This invention relates to injection molding machines and, more particularly, to an injection molding machine having an integrated carriage assembly for injection of a material into a mold. The carriage assembly includes an integral injection cylinder and carriage cylinder housing having an outer injection cylindrical wall and a pair of outer carriage cylindrical walls. An injection cylinder assembly is connected to the outer injection cylindrical wall forming a hydraulic chamber, and a motor is mounted on the carriage assembly to form a combined rotary reciprocating hydraulic cylinder. The outer carriage cylindrical walls receive transport rails to form hydraulic carriage cylinders to move the carriage assembly. The mold material density, temperature, pressure, and flow rate are closely controlled by axially controlling the force applied to the injection screw with the combined rotary reciprocating hydraulic cylinder.

Abstract: Balanced injection molding in a multi-cavity mold of a plurality of ridged-wall products having is accomplished by providing mold parts defining therebetween at least two cavities for forming the ridged-wall plastic products, wherein each of at least two cavities defines a plurality of flow channels in which injected plastic material flows within the cavity and in which flow channels the first side strips are formed; wherein the relative disposition of the mold parts is adjustable for adjusting the dimensions of the flow channels in at least two mold cavities separately so that when plastic material is injected approximately simultaneously into the at least two mold cavities the injected plastic material flows within the at least two cavities at respective flow rates that cause the at least two mold cavities to be completely filled approximately simultaneously with the injected plastic material.

Abstract: A method and apparatus for a nonsynchronous system for continuously molding articles from a material cured by the control of temperature and pressure. The apparatus includes a multi-section self-clamping mold, a controller system, a material injector, a transfer system, a curing apparatus for curing the articles, and a mold separator-assembler. The method comprises pre-treating and then assembling the mold in a clamped condition. Under the control of the controller system, the mold is then injected with material from the injector, and moved by the transfer system through the curing apparatus to cure the material within the mold. Once cured, the controller system moves the mold to the mold separator-assembler via the transfer system. The mold is then disassembled into sections, the molded article is removed, and the sections are pre-treated and reassembled, for the next injection operation.