Abstract: Disclosed herein is an ejector for an injection molding machine used to extract a molded product formed inside a die, the ejector including: a first ejector plate which is movably installed in a moving plate for fixing the die; a second ejector plate which is separably connected to the first ejector plate; and an ejector pin which is installed in at least one of the first and second ejector plates so as to push outward the molded product.

Abstract: A module with a demoulding function comprises a module member including a cavity for molding a molded part, the module member having an upper channel and a lower channel passing therethrough, each of the upper and the lower channels having a ramp, and the ramps of the upper and lower channels extending symmetrically and convergently; two sliding members movably received in the upper and lower channels, respectively; and two cores each attached to one end of a respective said sliding member and located in the cavity. In use, after an injection molding process, the cores form recesses on the molded part. Then the two sliding members are pushed toward the molded part. The convergent ramps lead the two sliding members to converge, so that when the molded part is departed from the cavity, the cores come off from the recesses of the molded part.

Abstract: An exemplary ejection mechanism includes a first plate and a second plate opposite to the first plate, an ejector plate, ejectors, an actuator with a driving shaft, and a drive mechanism. The ejector plate and the drive mechanism are located between the first plate and the second plate. The ejection mechanism further defines first through holes which pass through the first plate and the second plate. The ejector plate defines a second through hole which is coaxial with the first through holes. The ejector extends from the ejecting plate to the first plate and aligns with the ejector hole of the first plate. The drive mechanism links with the driving shaft and the ejector plate, and the actuator drives the ejector plate between the first plate and the second plate via a drive mechanism, which makes the ejector eject or retract.

Abstract: An injection molding device includes a lens molding die. The lens molding die includes a male mold, cores inserted in the male mold, a support plate attached to the male mold, and fixing poles. The support plate defines a plurality of I-shaped first guiding holes spatially corresponding to the cores. The fixing poles correspond to the respective first guiding holes. Each fixing pole includes a body portion and a connecting portion extending from the body portion. The body portion has an I-shaped cross-section conforming to the first guiding hole. The body portion extends through the corresponding first guiding holes. The connecting portion is secured to the corresponding core.

Abstract: An injection molding tool having a first section moveable with respect to a second section. In a first position, the first section contacts the second section along a parting line and forms a cavity. An expandable cavity part is moveably mounted with respect to the second section. In a closed condition, the expandable cavity part is in a retracted or molding position. The expandable cavity part can be moved away from the molding position or the closed condition to a release position or an expanded condition with allows access to molded part or other article. A core pin is either moveably mounted with respect to the expandable cavity part or is in a fixed position with respect to the expandable cavity part.

Abstract: An injection mold for insert molding includes a stationary plate, a first core and a second core. The stationary plate defines an upper surface and a side surface perpendicular to the upper surface. The upper surface has a slot at a middle portion thereof. The slot extends perpendicular to the side surface and reaches the side surface. The first core is received in the slot of the stationary plate and defines a holding element on a top surface thereof for securing an insert. The second core is closed with the first core to form a mold cavity, with the insert extending into the mold cavity. The first core is capable of being taken off from the slot of the stationary plate when the first core and the second core are detached from each other.

Abstract: A structure of a plastic container having a hollow flange, a mould thereof and a method for manufacturing the same are provided in the present invention. The mould of the plastic container includes a first mould plate and a second plate. The first mould plate has a mould cavity, and the second mould plate has a mould insert. The mould cavity and the mould insert are combined to form a body-forming space and a flange-forming space. The flange-forming space surrounds an end surface of the body-forming space. The mould can feed air into a flange-forming space by an air-supplying pipe and a material-overflowing space during the injection molding of the mould, thereby forming a finished product of the plastic container having a hollow-shaped flange. The structure of the plastic container includes a body and a flange having a closed hollow portion. The plastic container has a better structure strength.

Abstract: An ejector apparatus moves a lift core extending through a core of a component of a resin molding mold to form an undercut portion in a molded piece and is installed so as to be capable of moving obliquely with respect to the core surface in a longitudinal direction. An ejector plate is arranged between the core and a base plate below the core, so as to be capable of moving up and down. A slide path is formed in the ejector plate extending in a direction in which a lower end of the lift core makes relative horizontal movement during ascent and descent of the lift core. A slide base is movably arranged in the slide path and coupled to the lower end of the lift core. A guide rod imparts a moving force within the slide path to the lower end of the lift core during ascent and descent of the ejector plate.

Abstract: An ejector device is mounted in an injection molding machine and has a base, a driving assembly mounted through the base and a hydraulic cylinder and a transmission assembly driving the driving assembly. The driving assembly is further connected to a rotating die of a die assembly and moves recipricatorily and rotates the rotating die to displace a semi-manufactured plastic article from one set of die faces to another set of die faces to form another plastic layer. Thus, a plastic article with multiple layers or multiple colors is formed in one injection molding machine.

Abstract: Method and apparatus for molding and assembling a composite part assemblies in, for example, a plastic injection-molding machine. Complementary mold portions associated with a mold plate and rotatable turret form plural parts. Assembly apparatus associated with the turret assembles the plural parts into an assembly. A further turret may be provided to add a complementary part to the assembly to make a final assembly. The method includes manufacture of composite part assemblies and final assemblies.

Abstract: Force from an electrically operated ejector mechanism of a molding machine is selectably supplemented by operation of second actuators. Second actuators are advantageously fluid (hydraulic or pneumatic) operated to supplement force provided by an electrically operated primary actuator when the ejector mechanism is driven to advance ejector members into cavities of a mold assembly. The second actuators may be enabled to be operated during automatically controlled execution of a machine cycle of operation and may be operated in response to operator selections when machine operation is controlled manually.

Abstract: An object of the present invention is to provide a method of producing an injection-molded article and a mold for injection molding, which can reliably effect control on a mold section on which a molded article should be left when a mold is opened, thus allow efficient automation of the production process of a molded article, and is applicable to production of a relatively soft molded article.

Abstract: Injection moulding machine comprising an injection unit with a plasticising screw and drive units for the movement of the injection unit and for the injection and after-pressure stroke of the plasticising screw, a fixed and a moveable tool clamping plate, a mould closing unit with a drive unit for generating the mould closing and opening movement of the moveable tool clamping plate and the tool closing force during injection, and a drive unit for a workpiece ejector device, wherein at least one of the drive units is a hydraulic drive unit with a hydraulic pump, a hydraulic cylinder and one or more control valves to activate the hydraulic cylinder, the hydraulic fluid of the hydraulic drive unit is an electrorheological fluid, and the at least one control valve for the hydraulic cylinder is an electrorheological valve with at least one through-flow gap for the electrorheological fluid and a plate capacitor arrangement for applying an electric control field across the through-flow gap.

Abstract: Methods and devices for forming plastic molded products are provided herein. In one embodiment, a mold for forming plastic molded products includes a stripper plate, the stripper plate including an opening and a countersunk sleeve around the opening. The mold also includes a cavity plate positioned on the side of the stripper plate comprising the countersunk sleeve, and a back plate positioned on the side of the stripper plate opposite the countersunk sleeve.

Abstract: A mold apparatus includes a core having a mold cavity for molding an article and a gate for allowing molten plastics to flow into the mold cavity therefrom. An ejector pin is arranged with a distal end thereof facing and adjacent to the gate. The ejector pin is movable with respect to the gate for making the distal end thereof close the gate or depart from the gate. The mold apparatus is capable of automatically separating redundant parts from an article without burrs.

Abstract: A method for injection molding a molding part in a molding cavity and a mold for injection molding a molding part are described.

Abstract: A mold core includes a forming pin having a hollow interior and an end wall. A passage, preferably in the form of a hollow tube, extends into the hollow interior of the forming pin and has an end sealingly secured at a position spaced from the end wall of the forming pin. A poppet valve is disposed on the end wall of the forming pin. The poppet valve is responsive to air pressure within the passage to open and permit flow of air through the end wall of the forming pin to assist stripping of molded articles from the mold core. The poppet valve includes a valve element having an outer end at the end face of the forming pin and an inner end adjacent to the end of the passage. A spring preferably biases the valve element to a closed position. The spring preferably comprises a coil spring captured in compression between the valve element and the forming pin.

Abstract: A biodegradable sport or garden article such as a golf tee is formed from a material comprising filler material, which can contain grass seeds, and a degradable binder therefor, so that discarded tees enhance the surface of the golf course, rather than littering it. Apparatus for manufacture of such articles comprises respective storage containers (8-11) for grass seed and a hardenable binder therefor, means (4-7) for controlling sequential discharge of the seed and the binder to a mould (16) for forming an article under a pressure sufficient to ensure compaction of the mixture within the mould, and means for discharging the tee from the mould. The apparatus may be in the form of a vending machine, manufacturing and dispensing golf tees in response to payment.

Abstract: A die and mold for manufacturing a mold product is provided. The die and mold includes a body having a cavity that has a shape corresponding to the mold product. The body includes an upper body plate, and a lower body plate facing the upper body plate and combined with the upper body plate. The die and mold also includes a gate. The gate includes an upper gate plate, a plurality of recesses formed on a lower surface of the upper gate plate, and a lower gate plate facing the upper gate plate. A plurality of protrusions is formed on an upper surface of the lower gate plate in a location corresponding to a location in which the plurality of recesses is formed. The gate also includes a resin injection portion through which a resin is injected into the cavity.

Abstract: An ejector apparatus for an injection molding machine, comprising ejector pins mounted to a movable ejector plate and drivable by a drive device for ejecting injection molded parts from a cavity of an injection molding tool, wherein the ejector plate is displaceable by the drive device with a given normal ejector force acting on an injection molded part, wherein there is provided a reinforcing mechanism which when there is a jammed injection molded part reinforces the ejector force acting on the injection molded part to an increased additional ejector force for ejecting the jammed injection molded part above the given normal ejector force which can be or is made available by the drive device.

Abstract: A method of and system for injection molding is shown. The method can include the positioning one or more metal components in a mold, aligning a film for transferring an image from the film onto a surface of a plastic component, injecting a material into the mold to form the plastic component such that the metal component will be embedded in the plastic component and transferring the image from the film onto the surface of the plastic component that has the embedded metal component. The method can also include the removing the transferred image from the metal component if at least a portion of the transferred image adheres to the metal component.

Abstract: The invention relates to an injection-molding tool (1) for plastics having a tool core (3, 5), an ejector (8) and a sliding tool portion (11) for forming an undercut, each of which is displaceable, the sliding tool portion (11) being displaceable both in the push-out direction (A) of the plastics molded component (4) produced in the tool and perpendicular to this direction, while the ejector and the tool core (3, 5) are displaceable in the ejection direction (A) and both the travel of the tool core (3, 5) and that of the sliding tool portion are derived from the travel of the ejector (8).

Abstract: When constructing an injection molding machine M that is equipped with hydraulic pumps 2, which control discharge flow rates by variably controlling the number of revolutions of a drive motor 3, and that drives hydraulic actuators 4a . . . by these hydraulic pumps 2; the injection molding machine M is equipped with a hydraulic drive member 6 having multiple hydraulic pumps 2p and 2q, and a hydraulic oil supply circuit 5 jointly or individually supplying hydraulic oil to be discharged from multiple hydraulic pumps 2p and 2q to a hydraulic actuator 4a, 4b, 4c, 4d or 4e selected from the multiple hydraulic actuators 4a . . . .

Abstract: A injection molding die includes a first molding unit, a second molding unit, at least one slide block, and a number of elastic elements disposed between the slide block and the first molding unit. The first molding unit includes a first molding surface and a sidewall surrounded the first molding surface. At least one gap is defined in an edge between the sidewall and the first molding surface. The gas hole is exposed at the gap for providing gas to the gap. The slide block is capable of moving toward or away from the sidewall, and includes a protrusion for engaging in the gap to cover the gas hole. The protrusion includes a protrusion surface coplanar with the first molding surface. The second molding unit includes a second mold surface defining a mold cavity cooperated with the first molding surface, the protrusion surface, and the at least one slide block.

Abstract: The invention relates to a device for demoulding negatives in plastic injection, which is coupled to means for ejecting a plastic injection mould and includes a guide bushing that can be attached to the die plate of the movable part of the mould, inside which extends a counter-mould which moulds the negative and is formed by a guide runner and a head that can be lowered to demould the negative. The guide bushing contains a projection which pushes against the side of the head as the counter-mould moves forward, so that the head is lowered sideways and the negative is released.

Abstract: An apparatus for releasing a part that has an undercut, particularly in an injection molding system. A flange is moveably mounted with respect to a moveable part of an injection mold. A head is moveably mounted with respect to the moveable part. A joint, such as a ball-and-socket joint, is used to connect the head with respect to the flange. The head has a shoulder that contacts a stop which is longitudinally fixed with respect to the moveable part, when the mold is in a closed position. A bias element can be used to normally urge the head in a lateral direction with respect to the moveable part.

Abstract: The invention concerns a closure system (100) for molded caps comprising: two guide rails (102), a carriage (108) able to move on each rail (102), a closure bar (110) disposed between the two carriages (108), two wheels (116a, 116b), each mounted on a carriage (108), able to move in rotation about a rotation axis and each end of the bar (110) being mounted on one of the wheels (116a, 116b) so as to be offset with respect to said axis, a rack designed to move parallel to the rail (102), for each wheel (116a, 116b), a maneuvering gear able to move in rotation, secured to and coaxial with the wheel (116a, 116b) and designed to mesh with the rack, for each carriage (108), a locking device (106) designed to lock the carriage (108) with the rack and the guide rail (102), for each rack, an activation device (104).

Abstract: An injection molding device with an ejection mechanism includes a cover, an ejector pin, a housing movably sleeving the ejector pin, and an elastic part placed over the ejector pin. The housing defines a through hole. One end of the ejector pin is fixed to the cover. Two opposite ends of the elastic part resist the cover and the housing respectively. A flange is defined in one end of the ejector pin opposite to the end fixed to the cover, and is configured for covering the through hole. The ejector pin is guided by the through hole to move away from the housing to drive the flange to push a finished product. The elastic part is configured for driving the flange to cover the through hole.

Abstract: A replaceable double-plate-injection mold comprises a movable side mold plate having one side formed with a male mold core; a movable side assembly plate being connected to another side of the movable side mold plate; a fixed side mold plate having one side being formed with a female mold core; and a fixed side assembly plate having one side installed with a plurality of track supporting rods for passing through the fixed side mold plate, the movable side mold plate, and the movable side assembly plate. One side of the fixed side assembly plate is recessed for assembling a supporting plate of the male mold core; and another side thereof is corresponding to the fixed side assembly plate. A center of the movable side mold plate is formed with a receiving portion.

Abstract: The invention relates to a slide mechanism comprising an ejector shaft (2) with a first end portion (2c) attached to a mobile ejector plate (3), a second conical end portion (2a) which ends in a protrusion (2b) coupled to a cam (6), the protrusion (2b) acting as a rotation shaft on which the cam (6) can oscillate; a wedge-shaped slide (5) with a molding portion (5d), an inclined segment (5a) between a push surface (5b) which is in contact with the part to be obtained (10) and a base segment (5c) and a sliding passage (14) which extends through the slide (5) in which at least one portion of the cam (6) slides in parallel with the negative (11a); a fixed sliding support (4) with an axial passage (4a) through which the ejector shaft (2) axially slides, and a slope (4c) on which the inclined segment (5a) of the slide (5) shifts, with a complementary inclination to that of the inclined segment (5a) of the slide.

Abstract: The invention relates to an injection-molding tool and to a process for producing pin-shaped blanks as end products, a two-dimensional skin cavity and blank cavities connected to said skin cavity being provided at a runner, in order to be able to form a molding, including a sprue, a skin and the blanks formed on said skin via defined predetermined breaking points. In this case, the injection-molding tool makes it possible before and at the beginning of the injecting operation to create a negative pressure in the cavities and makes it easier after the molding material has solidified to demold the molding obtained by introduced compressed air.

Abstract: Disclosed, amongst other things, is: a continuous molding machine, a cam of the continuous molding machine, a post-molding device of the continuous molding machine, a molded article handling device, amongst other things.

Abstract: An injection mold is disclosed. The injection mold includes a female die, a male die and an ejection device die slidably passing through the male die for ejecting molded product out of the mold. The female die includes a female die body and a female die core received therein. The male die includes a male die body and a male die core slidably received therein. The female die core and the male die core configured for cooperatively defining a molding cavity for forming a product. The ejection device includes a first ejection rod and a second ejection rod slidably connected to the first ejection rod. A first distal end of the first ejection rod is connected to the male die core. When molding product, an end of the second ejection rod distal from the first ejection rod is configured to be fixed relative to the male die.

Abstract: This invention provides an inclined ejector mechanism and an injection mold using the same. The inclined ejector mechanism includes a retaining element, an inclined ejector pin, and an pulling rod. The retaining element has a retaining portion. One end of the inclined ejector pin is operatively connected with the retaining portion, such that the inclined ejector pin is capable of limitedly moving relative to the retaining element. The pulling rod is connected with the retaining element.

Abstract: A mold of injection molding for insert-molding an inserting element includes a first mold plate, a first mold core, a second mold plate, a second mold core, and a retreating device. The first mold core is assembled at one side of the first mold plate. The second mold core is assembled at one side of the second mold plate. The second mold core and the first mold core may form a mold cavity. The mold cavity has an oblique portion. The oblique portion and a parting direction of the first mold plate away from the second mold plate form an oblique angle. The retreating device has a movable block. The movable block faces the oblique portion and is movable along the direction vertical to the oblique portion. The movable block has a recess communicating with the mold cavity, and the inserting element is disposed at the recess.

Abstract: A mold for injection molding includes a first mold core, a base, a mold core base, a second mold core, and a plurality of first screws. The mold core base is disposed at the base. The second mold core is disposed at the mold core base. When the first mold core approaches the second mold core, the first mold core and the second mold core form a mold cavity. The first screws pass through the mold core base from a side of the mold core base away from the base to be screwed into the base.

Abstract: The present disclosure relates to a device for the injection molding of an item including at least one face, a protruding peripheral part provided with an edge for the connection with another face, said device including mold elements movable with respect to each other and jointly cooperating by delimiting therebetween joint planes as well as a cavity intended to be filled with liquid plastic material through injection channels to form said item after the ejection from the mold, characterized in that it includes a mold element to form the protruding part of the item, whose joint plane with the immediately adjacent front mold element is angularly oriented from said edge and on at least a portion of the length thereof, according to the direction of ejection.

Abstract: An improved mold assembly for producing an article and for use with an air source is disclosed. The mold assembly is of the type including at least two mold portions configurable to form a mold having an interior mold cavity in the shape of said article, one or more of said mold portions each including an interior conduit for delivering air from said air source in use. The improvement comprises, for each of said one or more mold portions, a pair of mold parts each having an abutment surface, one of said abutment surfaces having defined therein a groove. The pair of mold parts is disposed in an operative configuration whereat they define at least in part said each mold portion, whereat the abutment surfaces lie flush against one another and whereat the groove defines at least part of the interior conduit in said each mold portion.

Abstract: A rotary injection molding apparatus and method for manufacturing products containing elastomeric material within multi-section single cavity molds. The apparatus includes a modular frame supporting an injection molding operation station having an injector assembly with a pressure sensitive nozzle assembly. The injector assembly is engaged with an extruder assembly at a check valve assembly. A mold servicer assembly is provided for assembly and disassembly of multi-section single cavity molds. A robotic arm assembly is supported on the modular frame and positioned for inserting and removing products or product components from disassembled molds. Finally; a rotating table is provided on the frame which has a plurality of work station positions supporting clamping assemblies for clamping single cavity molds around the periphery of the rotating table.

Abstract: The present invention relates to plastic injection molding tool, having a front and a rear tool half which, in the closed state, delimit a hollow molding chamber between them. The rear tool half has at least one ejector and at least one oblique slide. The ejector is constituted by at least one front part, designed as a driver, of the rear tool half. It can be displaced to a limited extent by a linear drive mechanism, which is supported on another portion of this tool half or on the base thereof. It is furthermore connected on its rear via a transverse guide element, extending at a defined angle in regard to the movement direction of the linear drive mechanism, with the oblique slide, which is guided by an oblique guide element on a part of the rear tool half which is fastened on the base.

Abstract: According to embodiments of the present invention, there is provided an adjustment device for adjusting a distance between a take-off plate and a treatment device of a molding system and a method for use thereof. More specifically, there is provided a distance adjustment device configured to adjust a distance between a take-off plate coupled to a fixed platen of a molding system and a treatment device coupled to a movable platen of the molding system. The adjustment device comprises a movable platen engagement interface configured for attachment to the movable platen of the molding system; a plenum engagement interface configured for attachment to the treatment device; a distance adjustment mechanism configured to selectively fix a position of the treatment device relative to the movable platen in a desired position.

Abstract: A food molding mechanism for a patty-forming machine that uses a servomotor to drive a crank arrangement. The crank arrangement drives a mold plate. The mechanism uses a reducer with a replaceable output shaft. The reducer engages a servomotor utilizing a double enveloping worm gear providing gear enmeshment across an arc portion of the servomotor main gear. A servomotor driven knockout apparatus comprises a cam and lever arrangement. Oil reservoirs for the knock-out cams are substantially sealed in the mold cover.

Abstract: An injection mold including a connecting structure for separating confronting faces of a slide member and a mold base, respectively, during a movement of the slide member. In accordance with several embodiments of the invention, the connecting structure may include a compressible member such that the slide member is biased away from the mold base, and wherein a positive contact between the confronting surfaces is configurable in response to an applied clamping force between the slide member and the mold base. In accordance with an alternative embodiment of the invention a cam arrangement links the slide member and the mold base enabling a positive contact between the confronting surfaces when the slide member is arranged in the in-mold position, and providing a gap between the confronting surfaces during at least a portion of an interval when the slide member is moving.

Abstract: An apparatus comprises a forming arrangement closable in a direction to form an object, said forming arrangement comprising at least two reciprocal movable elements along respective arched trajectories to disengage from said object, said arched trajectories having respective components parallel to said direction.

Abstract: An injection moulding device for producing an injection moulding has a first (16a, 16b) and a second (14) mould plate which can be moved relative to each other in the closing direction. Furthermore, the injection moulding device comprises a mechanism (17a, 17b) for repositioning at least one (16a, 16b) of the mould plates in such a way that at least two different de-moulding directions (R1, R2) in relation to the injection moulding can be implemented.

Abstract: An injection mold device includes: a stationary mold plate including a stationary mold body, a protrusion, and a sprue having a sprue open end; a movable mold plate formed with a first forming part; and a stripper plate including a stripper mold body, a recess, a second forming part, and a plurality of runners. When the stationary mold plate, the movable mold plate, and the stripper plate are assembled, the protrusion is received within the recess such that the sprue open end is in fluid communication with the runners, and the first forming part and the second forming part form a mold cavity.

Abstract: The present invention relates to an injection molding process that improves recovery limited productivity. The present invention advantageously applies pressurized fluid within the nozzle of an injection molding machine to improve the machine's productivity. In accordance with one aspect of the invention, an existing or new injection molding machine is outfitted with a pressurized fluid system at the nozzle between the plasticizer barrel and the melt manifold. The use of a specialized nozzle and isolation valve allows the pressurized fluid to displace material within the nozzle and runner, ensuring the proper pressure is applied to the plastic resin within the mold during pack and hold while the plasticizing screw can begin its recovery cycle. Finally, the pressurized fluid can be evacuated from the nozzle melt stream area either via the fluid entrance or a fluid pin.

Abstract: A valve device is configured for obturating an opening of a channel defined in an injection molding device. The valve device includes a plug movably received in the channel, and a resilient member connected with the plug. The plug includes an obturating portion for obturating the opening of the channel. The resilient member is configured for driving the plug to its original position where the obturating portion obturates the opening, after the opening of the channel is opened.

Abstract: In an injection mold, a compression pin is placed at a cavity surface by the pressing force of a biasing member, and is moved rearward by the pressure of filled resin so as to form a compression boss. After the completion of filling, the compression boss is compressed by the compression pin.

Abstract: An injection mold includes a movable half. The movable half includes a gate, a first cavity surface communicating with the gate and a knockout pin. The gate is a channel having an opening. The first cavity surface is adjoining the gate at the opening. The knockout pin is oblique to a moving direction of the movable half. The knockout pin extends towards the first cavity surface and adjacent to the opening of the gate. The knockout pin includes a trimming edge coplanar with the opening of the gate and the first cavity surface.