Abstract: A part-forming machine having an infrared vision inspection system and a method for verifying the presence, absence and quality of molded parts therein wherein an infrared vision system is utilized. At least one infrared sensor is used in conjunction with a part-forming machine, wherein the infrared sensor takes an image of the part and/or mold based on infrared radiation emitted by the part/mold. Based on the infrared image, the part-forming machine responds thereto by activating ejectors and reimaging the part/mold, or continuing with the next molding step.

Abstract: An automatic mold opening and food product extracting apparatus. The apparatus includes a first conveyor for moving a food mold with a food product therein from a staging gate to a delatcher and further to a time-delay gate. The staging gate controls movement of the molds and food products therein into the delatcher. The delatcher engages the mold such that the first and second portions are unlatched. A second conveyor is disposed above a portion of the first conveyor. The time-delay gate controls movement of the molds toward the second conveyor. Gripping pads on the second conveyor grippingly engage the second portion of the mold so that the second portion is raised above the first portion and the food product originally in the mold. The separation may be provided by gravity or by a lid puller device when proper separation does not occur.

Abstract: A part-forming machine having an in-mold integrated vision system and method therefor for verifying the presence, absence and quality of molded parts therein. The image of the mold and/or part is acquired at a substantially parallel angle relative to the image-capturing source thereby allowing the imaging of the mold while the mold is opening thus increasing the resolution, speed and accuracy of part-forming machine imaging systems.

Abstract: A plastic injection molding machine has an object oriented programmed routine to control the molding cycle of the machine. The programmed routine implements the inter-related molding cycle of clamp, inject, hold, eject and recover by development of classes corresponding to machine structure performing basic molding cycle steps. The basic classes use object oriented concepts of data encapsulation, inheritance, polymorphism, abstraction and the like that are linked together to produce objects during run time. The classes in turn include controller, observer and actuators classes. The controller class functions as a state machine. The observer class functions to determine the current state and the actuator class produces command signals controlling class related machine hardware. A modeling system is also disclosed for constructing the OO programmed routine for any injection molding machine using existing classes, principally by difference.

Abstract: Injection-moulding machine with at least one handling device, with an electronic stored-program control (SPC) for the injection-moulding machine and an electronic stored-program control for the handling device, characterized in that the stored-program control (SPC IMM, 17) for the injection-moulding machine (IMM) and the stored-program control (SPC R, 29) for the handling device (10) are realized on one and the same, common digital computer (30).

Abstract: Method and apparatus for control of an ejector mechanism of a molding machine. A procedure is executed without operator intervention for setting limits for controlling motion of movable members of mold assemblies, the movable members linked to ejector pins communicating with the mold cavity and used to assure molded articles are dislodged from a mold element. The procedure, typically associated with a “set-up” mode of control, operates an ejector mechanism with reduced force to drive the movable members to the extremes of travel thereof, senses a “stalled” condition at each extreme, and causes measured position of each extreme to be recorded. Position values intended for use in normal (program controlled) operation of the molding machine are derived from the recorded position values.

Abstract: A disturbance estimating observer is provided, which estimates a load applied to a servomotor for driving an ejector axis. When an ejector operates, the disturbance load torque estimated by the observer is sampled for each specific period (0 to j), and the data DA (0, 0) to DA (i, j) of (i+1) ejector processes are stored in a table TA in the form of cyclic storage. From this table TA, average values DB (0) to DB (j) of estimated disturbance load torques are determined in turn and they are stored in a table TB. From these average values, upper limit values DC (0) to DC (j) and lower limit values DD (0) to DD (j) of a permissible range are stored in tables TC, TD. When the determined estimated disturbance load torque has exceeded the permissible range, an abnormal load signal is outputted.

Abstract: A method for operating actuators, such as pneumatic valves, in an injection molding machine especially for CD or DVD discs, or other molded articles. The timing of auxiliary processes (such as blowing air into the mold cavity or applying suction to the molded article in the cavity) is set as a function of the instant of completion of a process in the main sequence of operations (especially, cooling the molded article prior to ejection from the mold). In a set and display section the user sets a preferred time tn for each actuator to operate after, or before, a set completion time T of the main-sequence process (e.g., cooling). The time tn can be negative or positive, so that the various actuators turn on before or after the set completion time. A CPU calculates a starting time T±tn, and keeps the actuators on during a following interval tp. The starting time T±tn may be input to a memory, and output to the respective actuator.

Abstract: A removal apparatus is provided which includes a travelling frame, first and second carriages provided on the travelling frame, first and second cross frames provided on the first and second carriages, first and second cross carriages provided on the first and second cross frames, first and second vertical units provided on the first and second cross carriages, and first and second chucking units secured to the first and second vertical units. In addition, a control unit is provided for synchronously controlling the movement of the first and second carriages, the first and second cross carriages, and the first and second vertical units so as to enable the first and second chucking units to be moved in three dimensions for removal of a molded product from a molding machine.

Abstract: A resin-molding mold unit and a resin-molding apparatus having the resin-molding mold unit are capable of removing any air trap from a molten resin therein. This makes it possible to produce a molded product which is free from any void and therefore improved in appearance. In order to enhance demolding of the molded product from the resin-molding mold unit, this resin-molding mold unit has a pin hole in which an ejection pin is received to have its front end portion extend into a molding space from an inner wall surface thereof by a length which is adjustable, if necessary. The front end portion assumes a semispheric shape. In injecting the molten resin, the ejection pin is adjusted in position so as to have its outer peripheral edge portion aligned in level with the inner wall surface. Since the molten resin thus injected flows along the semispheric front end portion, any air trap is not formed in the vicinity of the ejection pin, particularly, in a downstream side thereof.

Abstract: In a method of controlling an apparatus for taking out an injection-molded product, and the apparatus for carrying out the method, a product holder is moved along a locus starting from a waiting position via an initial linear zone, a curve zone and a final linear zone to a holding position for holding the product. A complementary time required for the movement of the product holder by a distance equal to a difference between a length from the waiting position to the holding position in the clamping direction and the length of the final linear zone is determined. The complementary time is subtracted from a ingress time required for the movement of the product holder from the waiting position to a point on a straight line between the male and female molds. A linear distance that the product holder moves from the waiting position A1 toward the point on the linear line for the same period of time as obtained by the subtraction is adopted as the length of the final linear zone.

Abstract: A part-forming machine having an in-mold integrated vision system and method therefor for verifying the presence, absence and quality of molded parts therein. The image of the mold and/or part is acquired at a substantially parallel angle relative to the image-capturing source thereby allowing the imaging of the mold while the mold is opening thus increasing the resolution, speed and accuracy of part-forming machine imaging systems.

Abstract: A part-forming machine having an infrared vision inspection system and a method for verifying the presence, absence and quality of molded parts therein wherein an infrared vision system is utilized. At least one infrared sensor is used in conjunction with a part-forming machine, wherein the infrared sensor takes an image of the part and/or mold based on infrared radiation emitted by the part/mold. Based on the infrared image, the part-forming machine responds thereto by activating ejectors and reimaging the part/mold, or continuing with the next molding step.

Abstract: A torque waveform of an ejecting device when a molded product is normally ejected is memorized in a memory device 12 as a normal waveform. A sampling device 11 samples a torque waveform of the ejecting device at predetermined time intervals to produce a detected waveform when the molded product is ejected. Threshold levels are set in a controlling device 13 at arbitrary time intervals by a first setting device 14 and set operations for specifying the operations of an injection molding machine are also set in the controlling device 13 at the threshold levels by a second setting device 15. The controlling device 13 compares a normal waveform with the detected waveform to judge whether a comparative result is above or below the threshold level, and if the comparative result is above the threshold level, the controlling device 13 controls the injection molding machine based on the set operation set according to the threshold level.

Abstract: An apparatus for taking out a molded product including an ejection-waiting-time adjusting section 51 and a pull-out-waiting-time adjusting section 52. The ejection-waiting-time adjusting section 51 reduces an ejection waiting time Ti of an ejection timer 3 and finely adjusts the ejection waiting time Ti so that a response time Tj may not become shorter than an absorption-pressure-rise expected time Ts nearly when the response time Tj agrees with the absorption-pressure-rise expected tome Ts. The pull-out-waiting-time adjusting section 52 reduces a pull-out waiting time Ta of a pull-out timer 4 and finely adjusts the pull-out waiting time Ta so that a completion moment of the pull-out waiting time Ta may not be earlier than a detection moment B of a preset pressure value P1. With this, it is possible to provide optimal timing of an ejection starting moment and a molded-product pull-out starting moment and also adjust them automatically.

Abstract: An abnormal mold detector is provided that can previously detect the breakage of a mold tool with an ejector plate. A pressure sensor is attached to the ejector pin of a mold to detect the mold internal pressure. The operation status of the mold is detected by the sensor attached to the mold piece of the mold. An abnormality detector, formed of a CPU, processes the detected pressure signal and the mold working state indicating signal. The abnormality detector sets a reference value D exceeding a normal sticking resistance of the ejector pin. As a material is injected, the mold internal pressure increases during one cycle (A and B) in the molding step. After the molding process, the ejection process is carried out by the ejector pin during the value C. When a sticking resistance exceeding the value D is confirmed during the monitoring operation (FF), the abnormality detector decides that there may be the possibility that an abnormal state occurs in the mold tool.

Abstract: A device and a method for detecting condition of molds attached to an injection molding machine with low cost and high reliability. A load exerted on a product ejecting mechanism or a mold opening/closing mechanism is estimated by a disturbance torque estimating observer. An index value (maximum value or average value) of the load is obtained and stored in each molding cycle of the injection molding machine. Obtained values of the index are displayed as a graph on a display device to indicate variation of the load in time series and thus allow an operator to monitor the condition of the molds.

Abstract: A plastic material injection molding machine comprises a mold with at least one movable mold portion and a movable handling system. The handling system is adapted to be moved along a predetermined trajectory and to enter between mold portions when the mold is in an open operational position. The movable mold portion has a front surface facing the handling system and defines a collision contour with respect to the handling system when the latter is moved along the trajectory during movement of the mold portion. The handling system is adapted to pass by the collision contour after the movable mold portion has moved away from the trajectory. The handling system is moved along a first path section of the trajectory before passing by the collision contour and is accelerated up to a predetermined maximum velocity. Thus, the handling system is at the maximum velocity when passing by the collision contour.

Abstract: A method and an apparatus are disclosed for controlling a motional sequence of a first movable component of a plastic material injection molding machine having a first trajectory spatially overlapping at least partially a second trajectory of a second movable component of the plastic material injection molding machine. Motion of the first movable component is initiated depending on an enabling signal indicative for a motional state of the second movable component.

Abstract: An injection molding machine includes various devices for reducing injection cycle time. A molded article detection apparatus and method are disclosed. The detection system and method determines if an article, or a portion thereof, remains on a machine core pin after the article ejection cycle has occurred, and, if so, communicates this condition to both the machine controller and the take-out controller. This prevents the machine from starting a new cycle and damaging the injection mold. Also, by communicating the extraction status to both the take-out controller and machine controller, if no articles or portions remain, injection cycle time is reduced. Additionally, a variable vacuum pressure apparatus and method are described. The apparatus and method allows early removal of molded articles from the molds into a take-out plate while the parts are still warm.

Abstract: A torque waveform of an ejecting device when a molded product is normally ejected is memorized in a memory device 12 as a normal waveform. A sampling device 11 samples a torque waveform of the ejecting device at predetermined time intervals to produce a detected waveform when the molded product is ejected. Threshold levels are set in a controlling device 13 at arbitrary time intervals by a first setting device 14 and set operations for specifying the operations of an injection molding machine are also set in the controlling device 13 at the threshold levels by a second setting device 15. The controlling device 13 compares a normal waveform with the detected waveform to judge whether a comparative result is above or below the threshold level, and if the comparative result is above the threshold level, the controlling device 13 controls the injection molding machine based on the set operation set according to the threshold level.

Abstract: A motor drive 50 of an induction motor IM includes an inverter section 20, a charger 60, a charging and discharging circuit 70 and a control section 80. The charger 60 is for storing regenerated electric power of the induction motor via the inverter section. The charging and discharging circuit 70 is for making the charger charge electric power and making the charger discharge the electric power. The control section carries out control of the charging and discharging circuit for making the charger charge the electric power when the induction motor generates regenerated electric power and making the charger supply the electric power to the induction motor in accelerating the induction motor or in electricity interruption.

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 method and apparatus for removing an item of shaped clay from a mould. The method including holding the piece (14) on a synthetic mould (10), pressing it against a resilient member (18) such that the member (18) substantially adopts the shape of the piece (14), and blowing the piece (14) off the mould (10), at which time the member (18) is compressed a little further to receive the clay (14) off the mould (10).

Abstract: A method for manufacturing thermoplastic tubes from hollow thermoplastic sleeves by a variety of different manufacturing processes. The machine used in the method is a single apparatus having an indexing device with a plurality of mandrels for holding hollow thermoplastic sleeves for the purpose of transporting the same around a closed manufacturing path. The method involves advancing sleeves around the closed manufacturing path to form tubes from the sleeves.

Abstract: A simple system is provided for lifting ejector pins in sequence, as a knockout piston (30) is raised. First and second ejector pins (40, 42) have lower ends respectively supported on first and second ejectors (70, 72) that each can move vertically, with the second ejector lying below the first one. The second ejector has a vertical through-hole (74), and a force member (80) lies within the hole and can project both above and below the hole. As the knockout piston is moved up, it first engages the bottom of the force member to push it up, so the force member pushes up the first ejector and first ejector pin, while the second ejector and second ejector pin do not move. The top (84) of the knockout piston is wider than the hole, so when the piston reaches the bottom of the second ejector, it then begins to lift the second ejector and second ejector pin. The force member can be a cam pivotally mounted on the second ejector, or can be a shaft that moves vertically.

Abstract: An injection mold and a method for ejecting, from the mold, a molded product having an array of integrally molded fastener elements extending from a base are provided. In some embodiments, the mold includes a series of ejector pins which progressively eject the product. In other embodiments, the mold includes moveable parts which pull fastener elements out of mold cavities without the use of ejector pins.

Abstract: A precision injection molding apparatus is provided with servo mechanisms in various portions of the apparatus including a resin injection portion to provide precise feedback control of resin weighing, blending, and injection of weighed and blended resin into a die cavity between closed dies, a die opening and closing portion to provide precise feedback control for driving a movable die from a spaced position into a closed position relative to a fixed die to provide the die cavity, a gate cutting portion to provide precise feedback control of gate cutting, a molding ejecting portion to provide precise feedback control of ejecting a formed molding and a molding removing portion to provide precise feedback control for removing the molding from between opened dies. Because servo mechanisms are used, there is no variation in repetitive response accuracy of motion and speed of operation can be increased in terms of cycle speeds without loss of accuracy.

Abstract: A machine for manufacturing thermoplastic tubes from hollow thermoplastic sleeves by a variety of different manufacturing processes. The machine is a single apparatus having an indexing table with a plurality of mandrels for holding hollow thermoplastic sleeves for the purpose of transporting the same around a closed manufacturing path. The manufacturing path of the machine is a series of stations which are mechanical devices for carrying out the manufacturing steps necessary to produce tubes from thermoplastic blank sleeves. The stations of the manufacturing path are modular so that they may be removed, added or rearranged; may be optionally connected to a process logic controller and may optionally have sensors for information feedback to the PLC device.

Abstract: A position sensing switch combined with a slide retainer for injection molds of the type having at least a portion of the molding cavity formed in slides which are slidingly mounted on one of a pair of mold halves such that the slides advance between open and closed positions laterally relative to the mold halves as the mold halves are similarly advanced between open and closed positions. The slide retainer comprises a locking member, such as a spring loaded plunger secured on the slide, and a receiver, such as a detent formed on a slide plate of the mold half to which the slide is slidably connected. The detent is formed in a cover plate extending over a cavity extending into the slide plate and in which the switch is positioned.

Abstract: An apparatus for producing molded coils of the present invention includes a molding machine having threaded spindles for receiving the coils to be molded. The coils are threaded over the spindles so that during the molding process the pitch and diameter of the coils are accurately maintained. The process is automated by use of a controller and automated assembly machinery. The controller and automated assembly machinery integrate a coil winder, a molding machine, and an auto bagger to automate the entire process of producing the molded coils.

Abstract: An insert molding method and apparatus not requiring a multiple movable molds and permitting stable insert molding to be performed by means of light, small-sized equipment. A robot for removing a molded product and a robot for placing an insert member are arranged around a mold clamping mechanism, and making them perform removal of a molded product and placement of the insert member, respectively, during a mold opening process of a molding cycle. The molding apparatus does not requirs a plurality of lower molds (stationary molds) and accordingly permits to eliminate a turntable or a sliding table, whereby the molding apparatus can be reduced in size and weight. Further, since only one lower mold suffices to obtain one type of molded products, the manufacturing cost of molds can be reduced and the mold temperature control can be made easier, so that not only the molding conditions are stabilized but also the life of the mold can be prolonged by eliminating the poor positioning.

Abstract: A resin compound for a molding die, a molding die made of the resin compound, and a molding method using the molding die are disclosed. The resin compound includes thermoplastic resin, inorganic fiber reinforcing material and inorganic particle filler, has a flexural strength of 1000 kgf/cm.sub.2 or more and a modulus of elasticity in bending of 70000 kgf/cm.sup.2 or more, and allows machining. A deflection temperature under flexural load of the compound may be 180.degree. C. or more. From this compound, it is possible to provide a core, a cavity block or the like of molding dies which can be accurately finished by machining finishing with a low cost and within a short term, have durability and allows recycling. The molding dies can be applied to various molding methods, and provide accurate molded products with a low cost.

Abstract: A skip-eject system for an injection molding machine includes an electronic camera for acquiring an actual image of an open mold after a part ejector has operated and a controller for comparing such actual image with an ideal image of the open mold with no part in the open mold. If a comparison of the actual image with the ideal image indicates that a part is no longer in the open mold, the controller outputs a close mold signal to close the mold and start injection molding of a new part. However, if the comparison indicates that the part is still in the open mold, the controller outputs an ejection signal to actuate the ejector to cycle again. This sequence continues until a comparison of an actual image of the open mold with the ideal image indicates that the part is no longer in the open mold.

Abstract: An improved golf ball injection mold is characterized by upper and lower support plates each containing corresponding hemispherical cavities which define spherical mold cavities when the plates are brought together. A plurality of retractable core pins are arranged in each cavity for supporting a core of a golf ball. A runner within the plates delivers fluid thermoplastic material to each cavity to form a cover on the golf ball core supported therein, and a cooling channel is provided adjacent to each cavity to provide even cooling of the thermoplastic material. Independently operated ejection assemblies are provided for the golf ball and for the residual thermoplastic material in the runner. With the improved ejection mold, the size and roundness of the golf ball and the surface configuration of the golf ball cover are more consistent and the molding time is reduced.

Abstract: A method for inspecting a tool such as a tool used in a tabletting punch and an apparatus for performing the method. The tool is clamped into a holder which positions it under an imaging device which captures an image of a top of the tool. Based an the captured image, an angular position of the tool is rotated so the tool has a predetermined angle. After the tool is rotated, an image of a profile of a tip of the tool is captured so that the radius of the tip of the tool can be determined.

Abstract: Plastic injection-compression multi-cavity molding of flash-free improved-cleanliness thermoplastic spectacle lenses (16) are suitable to be robotically dip hardcoated. Special spring-loaded (25, 26) molds having variable-volume mold cavities are used in an injection-compression molding process to form, without parting line flash, pairs of a wide range of differing optical power of polycarbonate Rx spectacle lenses (16). These pairs have special molded-on design features which are specially suited for full automation, starting with a novel way for ejection out of the mold into a takeout robot which is integrated via full automation with subsequent dip hardcoating. A molded-on tab with each pair of lenses is specially suited for manipulation by SCARA type robot.

Abstract: An ejector mechanism is driven by a servomotor. An ejector pin in the ejector mechanism is made to perform a motion such that the ejector pin reaches a predetermined protrusion limit position beyond a position where the removal of a molded product from a cavity or core is completed after making a check for positioning, and a plurality of cycles of reciprocating motion of a short amplitude such that the ejector pin neither retracts beyond a position where the removal of the molded product from the cavity or core is started nor protrudes to the protrusion limit position, without requiring a check for positioning.

Abstract: A high speed, automatic device for removal of molded plastic articles from a multicavity injection mold including a method of minimizing molding machine cycle time.

Abstract: A system for unnesting a molded hardboard from a cavity die includes an air nozzle which directs a jet of air at a lower corner edge of the die. The air jet slightly lifts the board from the die to enable a loader tray to engage the edge of the board and push the board out of the die.

Abstract: A method of making a plurality of optical record disc substrates includes the steps of injecting a resin material into a plurality of disc-shaped cavities which are formed by closing a fixed mold half and a movable mold half; and cooling the injected resin material in the cavities. The cavities are grouped into a plurality of groups so that each group includes not less than one cavity, and each group is provided with a common actuation device so that each actuation device is independently operated.

Abstract: An ejector mechanism calibration method is for use in an injection molding machine including an ejector mechanism for ejecting a molded product out of a mold. The ejector mechanism is operable to carry out, when the molded product is ejected, an advance operation in which the ejector member is moved forward to a first position and to carry out, after the molded product is ejected, a reverse operation in which the ejector member is moved backward. The ejector member is adapted to be stopped by a stopper located at a second position spaced from the first position in a backward direction. A controller carries out a calibrating operation at a start of an injection molding process.

Abstract: A remover for an injection-molded article includes a front mold and a movable mold half connected to the front mold freely movable in a forward and backward direction and adapted to define an injection-molding cavity by association with the front mold. A detecting arrangement continuously detects a start time, a finish time, and a quantity of travel of the movable mold half. An ejector forces out a molded article at a mold-open finish position. A removing mechanism includes a grasping member for grasping the molded article. A control arrangement performs numerical control of the removing mechanism, so that when the detecting arrangement detects the finish time of the mold-open operation of the movable mold half, the removing mechanism moves the grasping member from a predetermined waiting position to a position for removing the molded article.

Abstract: A method for ejecting a molded product from a die. The method includes advancing an ejector pin from a withdrawn position to a projected position for ejecting a molded product and withdrawing the ejector pin from the projected position to the withdrawn position. At a preset range in at least one of the advancing step and the withdrawing step, the ejector pin undergoes very small reciprocating movements having a period less than 0.1 seconds. When the ejector pin is advanced while very small reciprocation is performed over a preset range in the advancing step, energy due to the projection of the ejector pin is continuously and gradually dissipated. When the ejector pin is withdrawn while very small reciprocation is performed over a preset range in the withdrawing step, the molded product is easily separated from the ejector pin. Accordingly, scattering of molded products and generation of cracks in the molded products can be prevented.

Abstract: This invention provides a plastic molding method, a mold, and a molded article. According to this invention, the supply flow rate of a coolant, e.g., cooling water, to a mold is maintained to shorten the molding cycle and to improve the productivity in continuous molding. The temperature distribution and pressure distribution in the mold are measured, thereby realizing determination as to whether a molded article is defective or not in the molding and cooling processes. The temperatures at respective required portions of the molded article removed from the mold are monitored, so that determination as to whether a molded article is defective or not can be performed, thereby improving the productivity. Countermeasures are taken not to deform the molded article. A thermoplastic resin injected from a hot runner into a cavity is heated at a gate discharge portion by a shearing heat upon injection. Countermeasures are taken to suppress temperature increase caused by this heat.

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

Abstract: A high speed, automatic device for removal of molded plastic articles from a multicavity injection mold including a method of minimizing molding machine cycle time.

Abstract: Disclosed is a robot for ejecting an object mounted to a movable body from the movable body, including: a holding section for holding said object mounted on the movable body; and a moving section for ejecting the object from the movable body by movement of the holding section; wherein the moving section includes a first guide section meshing with the holding section for linearly moving the holding section in a first direction by rotation with respect to the action of the movable body; and a second guide section for rotating the holding section in a second direction along with the rotation of the guide section directed in the first direction. The first guide section may be composed of a ball screw, the holding section has a nut, and the ball screw meshes with the nut. Moreover, the second guide means may be composed of a cam and a cam follower meshing with the cam. Additionally, the movable body may be composed of a movable die of a molding machine.

Abstract: The present intention intends to operate an ejector which carries out gate cut and product ejection in an injection molding machine, at optimal speeds, respectively. According to the present invention, a control unit for controlling hydraulic or electric drive means for operating one or more than one ejector pin comprises operation speed setting means for gate cut and another operation speed setting means for product ejection. Such a structure enables to carry out gate cut by operating an ejector unit controlled by an ejector unit operation speed setting means for a gate cut and, subsequently, to carry out a product ejection from metallic molds by operating the ejector unit controlled by another ejector unit operation speed setting means for product ejection. The ejector unit is set at a comparatively high operation speed for gate cut so that no gate trace will remain, and at a comparatively low operation speed for product ejection so that no cracks will be generated in the product.

Abstract: An apparatus for producing ice vessels for use in serving fresh foods is disclosed. The apparatus includes a female die with a male die opposite to the female die. The female die has a hole at the bottom thereof through which a pin can be raised and lowered by means of an elevator device. An automatic ice crusher is located relative to a chute box for feeding ice pieces into the female die. The chute box has an outlet located above the female die and an inlet located below the ice crusher for receiving ice from the ice crusher. A carrier-arm device is movable back and forth to transport molded ice vessels from the female die. A transporting outlet chute serves to transport the molded ice vessels, the outlet chute being inclined for permitting the molded ice vessels to slide thereon. The device is further characterized by having the carrier-arm device include holding arms capable of moving toward and away from each other along the sides of the female die.