Abstract: A plasticizing device includes a material reservoir which has an input port and is configured to retain a material, a plasticizer which has a screw and a case housing the screw and provided with a feed port communicated with the input port, and which is configured to plasticize the material to generate a plasticized material, a coupling pipe having a coupling path configured to connect the input port and the feed port to each other, a material sensor which has a light emitter configured to emit light toward the screw via the feed port, and a light receiver configured to receive reflected light of the light, and which is configured to detect a remaining amount of the material, and a controller configured to control the material reservoir, wherein the material reservoir has a material feed mechanism configured to feed the material to the coupling path, and the controller controls the material feed mechanism to feed the material to the coupling path when the remaining amount of the material detected by the mater

Abstract: A plasticizing device includes: a drive motor; a rotating unit driven to rotate about a rotation axis by the drive motor and having an end surface perpendicular to the rotation axis; a barrel having a bottom surface facing the end surface of the rotating unit, and a heater; and a material supply unit supplying the material between the rotating unit and the barrel. At the bottom surface of the barrel, a first communication hole through which the molten material flows out, a first groove part coupled to the first communication hole, a second communication hole through which the molten material flows out, and a second groove part coupled to the second communication hole are formed.

Abstract: A plasticizing device includes: a drive motor; a rotating unit driven to rotate about a rotation axis by the drive motor and having an end surface perpendicular to the rotation axis and a lateral surface intersecting with the end surface; a barrel having a bottom surface facing the end surface of the rotating unit, and a heater; a case accommodating the rotating unit; and a material supply unit accommodating the material. At least one of the barrel and the case has a sidewall surface facing the lateral surface of the rotating unit and standing up along an outer circumference of the bottom surface of the barrel. At the bottom surface of the barrel, a communication hole through which the molten material flows out and a spiral groove part coupled to the communication hole are formed. The lateral surface of the rotating unit and the sidewall surface together define a supply space where the material is supplied from the material supply unit to the groove part.

Abstract: A hydraulic supply device of an injection molding machine is provided with: a first main hydraulic power source including a first main hydraulic pump having a variable capacity and driven by a first constant rotational speed motor, and a first main discharge pipe through which working oil flows; an auxiliary hydraulic power source including an auxiliary hydraulic pump driven by a servo motor and operated at a specific capacity, an auxiliary discharge pipe through which the working oil flows, and a check valve that regulates the inflow of working oil to the auxiliary hydraulic pump; a hydraulic control unit that controls the first main hydraulic power source and the auxiliary hydraulic power source; a junction pipe at which the first main discharge pipe and the auxiliary discharge pipe join; and a switching unit that switches the supply/non-supply of working oil for a hydraulic actuator.

Abstract: A plasticizing screw for injection molding according to the present invention is installed in an injection molding machine that performs injection molding by plasticizing thermoplastic resin feedstock containing reinforcement fibers, and includes a shaft, a main flight, and a sub-flight. The protrusion height of the main flight from the circumferential surface of the shaft is formed to be constant in at least an area in which the sub-flight is provided.

Abstract: An injection molding machine includes a cylinder that feeds a molding material, a screw that is rotatably and advanceably/retractably provided in the cylinder, a plasticizing motor that rotates the screw, a rotation transmission part that is provided in a rear side of the screw in an axial direction of the screw and configured to transmit rotation of the plasticizing motor to the screw. The rotation transmission part includes first and second transmission members provided in a passage where the rotation of the plasticizing motor is transmitted to the screw. The first transmission member is provided toward the plasticizing motor. The second transmission member is provided toward the screw. The first and second transmission members are connected to move relative to each other.

Abstract: The food product machine with a food supply, a rotary food pump connected to the food supply, a molding mechanism having a mold plate and a knockout drive, and a mold plate reciprocating between a fill and a discharge position. The knockout drive reciprocates a knockout plunger to discharge molded food products from the mold plate the mold plate being reciprocated between a cavity fill position and a cavity discharge position. The machine includes a manifold connected an outlet of the food pump and having an outlet passageway connected to an inlet of the molding mechanism for filling the cavity of the mold plate. The machine can further include a fill plunger system for increasing the fill pressure of the food mass prior to filling the mold cavities. Plungers extend into the manifold to displace food mass volume and increase the pressure in the manifold.

Abstract: An injection device may include an injecting portion, and a material feeding portion having a pelletized resinous material. The material feeding portion includes a cylindrical feeding passage that is communicated with the injecting portion, a screw that is disposed in the feeding passage, and a drive mechanism that is configured to rotate the screw about a rotational axis. When the screw is rotated about the rotational axis by the drive mechanism, the pelletized resinous material can be fed into the injecting portion.

Abstract: The invention relates to an injection molding unit for an injection molding machine for processing plastics, comprising an electro-mechanical dosing motor (D) for rotating a worm conveyor (11) during dosing of the plasticizable material, and an electro-mechanical injection motor (E) for the axial movement of the worm conveyor (11) relative to a plasticization unit (10). The injection motor (E) comprises a spindle drive having a spindle (16). The axes of the dosing motor (D) and of the injection motor (E) are aligned with one another. Due to the spindle (16) of the injection motor (E) being rigidly connected to the rotor (12) of the dosing motor (D) and due to the fact that the dosing motor (D) can be blocked by a braking means in a direction of rotation, an alternative compact, energy-saving injection molding unit is created.

Abstract: An extruder unit (22) for an injection molding system (20) includes a piston (48), slidably located within a piston chamber (42), and is movable between a retracted position and an extended position. The piston (48) is further adapted to rotatably mount a screw (30). A motor assembly (36) is mounted to the piston housing (40) and operable to rotate the screw (30). The piston (48) is translated by a hybrid injection actuator (38), the hybrid injection actuator (38) including: a drive unit (50) operable to move the piston (48) between the retracted position and the extended position; and a gas pressure unit (93), operable to provide a boosting force to the piston (48), thereby urging the piston (48) towards the extended position.

Abstract: A thermoplastic injection molding system and method of use is described for molding parts from heated plastics and other organic resins. The machine uses heat sources located along the barrel to heat the source material while an auger screw transports the source material in the barrel. This transport step does not shear the source material, nor does it use friction to produce the heat necessary to melt the source material. The material becomes substantially liquid or melted during the heating process, and the melted material is forced, by the auger screw, into a chamber whereupon a plunger, situated concentrically with the auger screw, injects the material from the chamber into a mold. Sensors located along the barrel and in the chamber ensure consistency between mold cycles. The controller dynamically adjusts the injection molding process to achieve more consistent and reliable molded parts.

Abstract: A plasticizing screw for injection molding according to the present invention is a plasticizing screw for injection molding that is installed in an injection molding machine which performs injection molding by plasticizing granular thermoplastic resin feedstock containing reinforcement fibers, and includes a shaft, a flight, and a mixer. The mixer is provided in plural stages in an axial direction, and the number of fins of the mixer of each stage increases toward a leading end side in the axial direction from a rear end side in the axial direction. Further, the protrusion height of each fin from the peripheral surface of the shaft is lower than the protrusion height of the flight from the peripheral surface of the shaft.

Abstract: A plastication unit for an injection molding machine, combining a heated plastication barrel with an entrance port and an exit port on opposing ends of the barrel; a hopper positioned to deliver ingredients to be compounded for injection molding to the entrance port of the barrel; and a helical plastication screw rotatably carried within the barrel and running the length of the barrel between the entrance and exit ports, which is operable to rotate and transmit the ingredients along the length of the barrel; wherein the plastication screw has at least one axial fluted extensional mixing element segment and the ingredients include at least one polymer for injection molding. Methods for injection molding with the plastication unit of the present invention and articles formed by the inventive methods are also disclosed.

Abstract: An extruder unit (22) for an injection molding system (20) includes a piston (48), slidably located within a piston chamber (42), and is movable between a retracted position and an extended position. The piston (48) is further adapted to rotatably mount a screw (30). A motor assembly (36) is mounted to the piston housing (40) and operable to rotate the screw (30). The piston (48) is translated by a hybrid injection actuator (38), the hybrid injection actuator (38) including: a drive unit (50) operable to move the piston (48) between the retracted position and the extended position; and a gas pressure unit (93), operable to provide a boosting force to the piston (48), thereby urging the piston (48) towards the extended position.

Abstract: An apparatus for forming desired patterns on ceramic tile from a slurry comprising: a means for preparing a slurry; at least one slurry holding tank for holding at least one type of slurry; at least one pattern forming tray; at least one means for connecting said at least one tank to at least one pattern forming tray and a filter pressing unit; wherein the pattern forming unit dispenses a predetermined type, amount, colors of slurry at a predetermined order into the pattern forming tray to form a desired pattern, said slurry with desired pattern is pressed with the filter pressing unit to form ceramic tiles or slabs with a desired pattern running though its entire thickness.

Abstract: An auxiliary injection unit is disclosed that has an extruder barrel and extruder screw integrated within an injection molding system. The extruder barrel and extruder screw are contained within a mold plate of the injection molding system with a drive mechanism of the auxiliary injection unit being external thereof. A melt stream emanating from the extruder barrel of the auxiliary injection unit is in selective fluid communication with either a melt channel of a manifold providing melt thereto during an injection cycle or with a discharge channel of a melt discharge tube for purging melt. A melt diverter component receives the melt stream from the extruder barrel and includes a shuttle valve slidably positioned therein that is operated to selectively divert the melt stream produced by the auxiliary injection unit to either the melt channel of the manifold or the discharge channel of the discharge tube.

Abstract: An electrically-driven injection molding system with a dual-driving function comprises an electric apparatus with a dual-driving function, a plasticizing unit, an injection unit, an injection carriage, a guide frame, and a base, wherein the electric apparatus with a dual-driving function is connected with the plasticizing unit and the injection unit, the guide frame is connected with the electric apparatus with a dual-driving function and the injection unit, and the electric apparatus with a dual-driving function, the plasticizing unit, the injection unit, the injection carriage, and the guide frame are installed on the integral base. An injection molding method is realized using the system. The system has an obviously simplified and compact structure, thus reducing the manufacturing cost, lowering the energy consumption, obviously extending the service life of the motors and ball screws, and making easy to popularize.

Abstract: A method of processing metal, metallic alloys, and metal matrix composites in a plastics injection molding machine is disclosed. The method includes the steps of providing a plastics injection molding machine having a screw. A step of removing the screw is included in the method. A step of replacing the screw with a modified screw configured and arranged for processing metals is also included. Alternatively, a step of removing the flights from the middle portion of the original screw shaft may be included.

Abstract: The present invention relates to an animal chew including a resin and a method of direct injection molding the animal chew using a modified screw. The screw may incorporate, for example, additional flights or a larger transition zone. The formed resin may exhibit voids of about 1-100 ?m in diameter.

Abstract: The present invention relates to an animal chew including a resin and a method of direct injection molding the animal chew using a modified screw. The screw may incorporate, for example, additional flights or a larger transition zone. Additionally, the particle size of the resin may be less than 2000 microns.

Abstract: A thermoplastic injection molding system and method of use is described for molding parts from heated plastics and other organic resins. The machine uses heat sources located along the barrel to heat the source material while an auger screw transports the source material in the barrel. This transport step does not shear the source material, nor does it use friction to produce the heat necessary to melt the source material. The material becomes substantially liquid or melted during the heating process, and the melted material is forced, by the auger screw, into a chamber whereupon a plunger, situated concentrically with the auger screw, injects the material from the chamber into a mold. Sensors located along the barrel and in the chamber ensure consistency between mold cycles. The controller dynamically adjusts the injection molding process to achieve more consistent and reliable molded parts.

Abstract: The invention relates to an injection molding unit for an injection molding machine for processing plastics, comprising an electro-mechanical dosing motor (D) for rotating a worm conveyor (11) during dosing of the plasticizable material, and an electro-mechanical injection motor (E) for the axial movement of the worm conveyor (11) relative to a plasticization unit (10). The injection motor (E) comprises a spindle drive having a spindle (16). The axes of the dosing motor (D) and of the injection motor (E) are aligned with one another. Due to the spindle (16) of the injection motor (E) being rigidly connected to the rotor (12) of the dosing motor (D) and due to the fact that the dosing motor (D) can be blocked by a braking means in a direction of rotation, an alternative compact, energy-saving injection molding unit is created.

Abstract: Injection molding systems and methods useful for making microcellular foamed materials are provided as well as microcellular articles. Pressure drop rate and shear rate are important features in some embodiments, and the invention provides systems for controlling these parameters in an injection molding system. Another aspect involves an injection molding system including a nucleator that is upstream of a pressurized mold. Another aspect involves an extrusion system with the reciprocating screw for forming a single phase solution of non-nucleated blowing agent and polymeric material. Another aspect involves very thin walled microcellular material and very thin walled polymeric material. Another aspect provides a method for producing high weight reductions in very thin-walled parts with surfaces that have no noticeable differences from non-foamed parts.

Abstract: The invention relates to a method and device for controlling a linear motion axis, particularly of the injection screw (43) or a melt piston for an injection molding machine. Said device comprises a hydraulically driven piston (45) having a piston chamber (A) and a rod chamber (B). According to the solution proposed by the invention, at least one process phase is controlled/regulated by means of two parallel proportional valves, an injection valve (1) and a metering valve (2). The two proportional valves can be connected in parallel or in combination. The control/regulation of the driven piston (45) preferably uses digital technology. An enormous reduction in energy consumption and smooth transitions between the process phases are achieved with a hydraulic linear drive.

Abstract: The invention relates to a device for producing molded parts from plasticizable material and from fibrous inserts on a cyclically operating injection molding machine for processing plastics, comprising a plasticization unit (10) and a plasticization worm (11) disposed therein. In order to feed in the fibrous inserts, at least one insertion opening (14) is provided on the plasticization unit (10) for the plasticizable material downstream of the material infeed area (13) in the feed direction of the plasticization worm (11). Targeted insertion in the cycle of the injection molding machine is made possible by a device (18) operating in the cycle of the injection molding machine for inserting the fibrous inserts into the plasticizable material in the plasticization unit (10) via the closable insertion opening (14) during metering.

Abstract: An object is to reduce the axial dimension of an injection apparatus (31), facilitate the work of removing and inserting a screw (20), and improve the quality of molded products. The injection apparatus (31) comprises a heating cylinder (17), a screw (20), and a drive apparatus. The screw (20) includes a plasticizing portion which includes a body portion (45a) and a flight (53) projectingly formed on an outer circumferential surface of the body portion (45a). An index ?, which is obtained by dividing a value obtained by adding a screw stroke S and a screw effective length L together by the screw stroke S, satisfies the relation 2.0<?<4.5. Even when the screw (20) is shortened, resin can be melted satisfactorily. Accordingly, the axial dimension of the injection apparatus (31) can be reduced.

Abstract: A method manufactures solid ink sticks by forming a solid ink paste and injecting the paste into a mold having internal cavities. The method includes generating a solid ink paste, injecting a portion of the paste under pressure into a cooled mold having at least two separable shells that form ink stick cavities, and separating the shells of the cooled mold to release solid ink sticks from the ink stick cavities.

Abstract: A patty-forming machine includes a food supply system where the drive mechanism for feed screws use integrated and compact motor and gearbox assemblies. The feed screws have heavy wall thickness flights and the feed screw shafts are journaled through modular bearing assemblies. A conveyor that forms the bottom of the hopper uses a sealed drum motor housed in the drive roller to drive the conveyor. A food supply system includes independent sensing means for indicating whenever the moldable food material accumulated at one end of the hopper exceeds a given level.

Abstract: Intended is to provide a molding machine using a built-in type motor as an injecting electric motor. In this molding machine, a mounting structure for such a transmission mechanism from a rotational motion to a linear motion, as changes the rotation of the built-in motor into the linear motion thereby to transmit the linear motion to an injecting member, is simplified to improve the assembling workability. For this improvement, a sleeve is fixed in the rotor of the built-in type motor. In the hollow portion of the sleeve, a screw shaft or the rotating portion of a ball screw mechanism and the sleeve are connected and fixed by a connecting member. A nut member or the straight portion of the ball screw mechanism is fixed on a member for performing straight motions together with the injecting member.

Abstract: An object is to reduce the axial dimension of an injection apparatus, melt a molding material uniformly, and improve the quality of molded products. A screw (20) comprises a plasticizing portion which comprises a body portion (45a) and a flight (53) projectingly formed on an outer circumferential surface of the body portion (45a). A groove-depth setting region is defined over a predetermined section of the plasticizing portion, and in the groove-depth setting region, the ratio ?1 of a groove depth ?1 to a diameter ?1 of pellets of a molding material falls within the range of 1??1?1.5 where the groove depth ?1 is a depth of a groove (67) formed along the flight (53). In the groove (67), pellets are arranged laterally and caused to advance while rolling along the groove (67). Since the pellets do not aggregate, no solid bed is formed.

Abstract: In a method of controlling an injection molding machine M which controls specified operational processes in a molding cycle by variably controlling the rotation speed of a driving motor 3 in a hydraulic pump 2 and driving a specified hydraulic actuators 4a, 4b, . . . , in lowering the pressure Pd of the operational process to a specified pressure Pn, the pressure Pd is forcibly lowered by controlling the driving motor 3 in reverse rotation.

Abstract: An apparatus having a kneading part for performing kneading of a material and an injecting part for performing injection of the material in an injection molding operation with the kneaded material. The kneading part and the injecting part are connected together. The injecting part includes a weighing screw channel portion for weighing the material and a retention screw channel portion that is formed adjacently to the weighing screw channel portion. The injecting part has an injection screw shaft defining differently shaped channels that form a material retention space for retaining the material fed continuously quantitatively from the kneading part. Thereby, the material fed continuously quantitatively from the kneading part can be securely retained in the injecting part where intermittent operation is performed.

Abstract: A thermoplastic injection molding system and method of use is described for molding parts from heated plastics and other organic resins. The machine uses heat sources located along the barrel to heat the source material while an auger screw transports the source material in the barrel. This transport step does not shear the source material, nor does it use friction to produce the heat necessary to melt the source material. The material becomes substantially liquid or melted during the heating process, and the melted material is forced, by the auger screw, into a chamber whereupon a plunger, situated concentrically with the auger screw, injects the material from the chamber into a mold. Sensors located along the barrel and in the chamber ensure consistency between mold cycles. The controller dynamically adjusts the injection molding process to achieve more consistent and reliable molded parts.

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: An injection molding machine capable of accurately detecting a rotational force exerted on a screw by resin backflow to easily evaluate states of resin backflow and closure of a check valve. In a state where the screw is stopped axially and rotationally after metering is finished, a load exerted on the screw in the rotational direction is detected. This load is a rotational force exerted on the screw from resin remaining between flights of the screw (resistance torque component). During injection, a load T exerted on the screw in the direction of rotation is detected, and the resistance torque component is subtracted from the detected load T to obtain a backflow torque component generated by resin flowing back through the check valve. By simultaneously displaying waveforms of backflow torque components in a plurality of molding cycles to be overlapped, stability of closure of the check valve is readily evaluated.

Abstract: An object is to reduce the axial dimension of an injection apparatus, melt a molding material uniformly, and improve the quality of molded products. A screw (20) comprises a plasticizing portion which comprises a body portion (45a) and a flight (53) projectingly formed on an outer circumferential surface of the body portion (45a). A groove-depth setting region is defined over a predetermined section of the plasticizing portion, and in the groove-depth setting region, the ratio ?1 of a groove depth ?1 to a diameter ?1 of pellets of a molding material falls within the range of 1??1?1.5 where the groove depth ?1 is a depth of a groove (67) formed along the flight (53). In the groove (67), pellets are arranged laterally and caused to advance while rolling along the groove (67). Since the pellets do not aggregate, no solid bed is formed.

Abstract: The invention relates to a combination drive for a plastic injection-molding machine having a rotary drive (1) for driving a screw shaft (9) so as to rotate and a linear drive (2) for driving the screw shaft (9) so as to perform a linear movement in the axial direction in relation to the rotary drive (1). When the linear drive (2) performs a linear movement, the rotary drive (1) is linearly entrained, thereby avoiding any axial forces on the rotary drive (1).

Abstract: An ending target position Xes corresponding to the measurement ending position Xe, a rotation rate pattern Ar to rotate a screw 2, and a hypothetical retraction rate pattern Ab for the screw 2 to retract are set in advance, the remaining rotation rate pattern Ar to stop the screw 2 rotation at the ending target position Xes is predicated by calculation based on the screw position X detected at every specified time interval Ts at the time of measurement, based on which the screw 2 is controlled to rotate to the measurement ending position Xe, the remaining retraction rate pattern Ab to stop the screw 2 retraction at the ending target position Xe based on the screw 2 retraction rate Vd detected at every specified time interval Ts, based on which the screw 2 is controlled to retract to the measurement ending position Xe, the rotation and retraction of the screw 2 are stopped, and subsequently the screw 2 is controlled to reverse rotate by a pre-set constant amount of rotation Rc while position controlling its po

Abstract: Disclosed, according to an aspect of the present invention, is a molding system that includes a mechanical fuse assembly configured to (i) abut a conduit connection, and (ii) permit movement of a conduit connection.

Abstract: A screw for injection molding provides a coaxial piston that allows the effective cross-sectional area of the screw to be varied during the injection cycle permitting small shot metering with relatively large diameter injection molding screws. The screw is positioned within the injector barrel of a injection molding assembly and includes a number of threads disposed around its outer surface configured to advance molten plastic to the front of the barrel. The screw further includes a central bore having a piston slidably received within the central bore. The plastic shot to be forced out through the nozzle of the injection molding assembly is controlled by movement of the piston within the screw.

Abstract: When a resin passage of a check ring is opened, resin backflow occurs during time when an injection screw is moved forward, and a reverse rotational force is applied to the screw by resin backflow. On the other hand, when the resin passage is closed, there is no resin backflow and the reverse rotational force applied to the screw is greatly reduced. Consequently, after completion of metering process and before injection process, the screw is moved forward after the screw has been rotated in reverse a predetermined amount to prevent resin backflow. At this time, a maximum value of the reverse rotational force applied to the screw is detected. Until the detected maximum reverse rotational force reaches a reference value or less, the reverse rotation amount is increased sequentially and respective molding cycles are carried out.

Abstract: In an injection molding machine capable of appropriately adjusting a control condition for a reverse rotation of a screw and a method for adjusting the control condition, molding is repeated with an amount of a reverse rotation of the screw performed after completion of metering and before injection to be varied in each molding cycle. In injection, resin flows backward until a check valve becomes closed. A peak value of a rotational force causing reverse rotation of the screw by the back flow of resin and other physical amounts are detected as indices of resin back-flow amount. An evaluation value of the control condition is obtained by inputting the indices of resin back-flow amount, metering time, etc. into an evaluation function. The value of screw reverse rotation amount with which the highest evaluation value is obtained is set for the screw reverse rotation.

Abstract: Molding system for filling mold with molding material, comprising: extruder, including: barrel configured to process molding material being pushable from barrel; barrel head operatively attached to barrel; screw disposed in the barrel; and screw drive connected to screw; stationary platen support a stationary mold portion; movable platen configured to be movable relative to the stationary platen; and body overlapping and sealing, at least in part, barrel and barrel head, body including: flange received at interface between barrel and barrel head, flange abutting end of barrel, flange abutting end of barrel head; and outer surface protruding from flange into interior of barrel, outer circumferential surface protruding from flange into interior of barrel head, outer surface sealing and overlapping against: (i) inner surface of barrel, and (ii) inner surface of barrel head; and body having coefficient of thermal expansion being: (i) greater than barrel, and (ii) greater than barrel head.

Abstract: The present invention relates to a powder fabricating apparatus. It is an object of the present invention to provide the powder fabricating apparatus, which is capable of obtaining metal powder in a rapid and continuous fashion, various kinds of oxide, or alloy powder. The powder fabricating apparatus for achieving the object of the present invention comprises a barrel wherein an inlet and an outlet are formed at both opposite ends thereof, respectively; a screw which is rotationally mounted in the barrel and by which reactant supplied from the inlet moves toward the outlet; a driving portion for causing a relative rotational motion between the screw and the barrel; reaction control means for controlling reaction conditions of the reactant which moves in the barrel; and a controller for controlling the driving portion and the reaction control means.

Abstract: A device for filling an extruder, which can optionally be an external extruder, with pretreated thermoplastic plastics material, in particular PET, has at least one evacuatable container (1) in which moving, in particular rotating, tools (7) are provided for pretreatment of the material. This pretreatment comprises drying and, optionally, crystallisation. Each container (1) has a discharge opening (18) for the flowable material (12), which discharge opening (18), with respect to the material, is fluidically connected to the filling opening (35) of the extruder (36). The device preferably has only a single container stage, the outlet of which is fluidically connected to a coupling (69), which is connectable to the filling opening (35) of the extruder (36), via a transfer section (31) maintaining the flowable state of the material (12) pretreated in the container (1) (FIG. 1).

Abstract: The invention is directed to an injection unit, in particular for an injection molding machine, comprising a screw which is guided in a plastication cylinder in a rotatable and axially movable manner and via which plastic material undergoes plastication and can be injected into a tool cavity. The screw is driven via an electric drive including an electric motor and is operatively connected to a support cylinder having a pressure chamber to which dynamic and/or support pressure can be applied during plastication and injection. The electric motor is coupled to a hydrostatic machine which during plastication is driven by the pressure medium displaced from the pressure chamber and which during injection conveys pressure medium into the pressure chamber so as to build up support pressure.

Abstract: An object is to provide a drive apparatus for an injection molding machine which can generate a large thrust force and can provide short-cycled continuous drive. The drive apparatus includes a housing (11); a tubular linear motor (14) including a movable element (12) disposed within the housing (11) in a manner capable of advancing and retreating, and a stationary element (13) attached to the housing (11), the linear motor (14) serving as a first drive section; a member-to-be-driven (15) caused to advance and retreat together with the movable element (12); and a second drive section attached to the housing (11) and disposed such that at least a portion of the second drive section overlaps the linear motor (14) along the axial direction. By merely a slight increase in a radial dimension, the area of a permanent magnet (23) of the movable element (12) can be sufficiently increased, and the capacity of the linear motor (14) can be increased.

Abstract: The invention provides an injection molding capable of adjusting a detection level with a simple structure and detecting a deposit level of the resin pellets near a plasticizing screw. A cooling jacket is mounted so that a resin supplying hole of the cooling jacket communicates with a resin supplying hole of a heating cylinder. A sensor head mounted on a sensor mounting plate is inserted into the resin supplying hole through a sensor insertion port provided on a hopper plate and a resin inlet and detects the deposit level of the resin pellets deposited in the resin supplying hole. Changing the extent of insertion of the sensor head enables the resin pellets deposit detection level to be changed, and further, enables the deposit level near the outer periphery of the screw to be detected. Setting the sensor detection direction perpendicular to the resin deposit direction enables dirtying of the sensor detection surface by the resin pellets to be reduced, thus enabling erroneous detection readings to be reduced.

Abstract: A screw and method for processing metal, metallic alloys, and metal matrix composites in a plastic injection molding machine is disclosed. The screw includes shank with a screw shaft extending from the shank. The screw shaft includes a rear portion proximate to the shank, a middle portion proximate the rear portion, and a front portion proximate the middle portion. Flights extend from the rear portion of the screw shaft for advancing material through the plastic injection molding machine into the middle portion of the screw shaft. Flights may optionally be included in the front portion of the screw.

Abstract: An object is to provide a motor-driven injection molding machine in which responsibility of a member-to-be-driven can be enhanced, as well as a molding method using the same. The motor-driven injection molding machine includes a member-to-be-driven; a motor for operating the member-to-be-driven; and a motion direction conversion portion disposed between the motor and the member-to-be-driven and adapted to convert to a linear motion a rotational motion of rotation generated by driving the motor. In the motor, the ratio of the stacking length of a magnet of a rotor (56) to the inside diameter of a stator (57) is 3 or more. In this case, since, in the motor, the ratio of the stacking length of the magnet of the rotor (56) to the inside diameter of the stator (57) is 3 or more, responsibility of the member-to-be-driven can be sufficiently enhanced.