Abstract: Proposed are an apparatus for molding a material, and a method for molding a material by using the apparatus. The apparatus includes first and second fixed platens (110 and 120) provided as a pair and spaced a predetermined distance from each other by tie bars (150), a movable platen (140) movable along the tie bars (150) between the first and second fixed platens (110 and 120), a mold (200) which is provided with a movable mold (220) and a fixed mold (240) and which forms a molding space (260) that is capable of being open or closed as the movable mold (220) moves in a direction toward or away from the fixed mold (240), and a pressing block (300) selectively positioned between the first fixed platen (110) and the movable mold (220) such that the pressing block is capable of applying a pressure to the movable mold (220).

Abstract: An injection molding system includes a main unit in which a first injection molding machine that injects a first molding material and molds a molded article is disposed and a control unit separated from the main unit and configured to control the first injection molding machine. The control unit is coupled to the main unit via a connection cable having predetermined length.

Abstract: A shaping system comprises a dispensing station configured to dispense formable material on a substrate, a shaping station configured to contact the dispensed formable material on the substrate with a plate, a positioning system configured to move the substrate having the dispensed formable material from the dispensing system to the shaping station, and a cover having one or more walls. While the substrate having the dispensed formable material is moved by the positioning system from the dispensing station to the shaping station, the cover is positioned to enclose the substrate and the dispensed formable material such that a ratio of a diameter of the substrate to a distance between the cover and the substrate to 80:1 to 30:1.

Abstract: The technology relates to a memory insertion machine for inserting memory modules into memory sockets on a circuit board. The memory insertion machine may include one or more insertion rods moveably mounted to one or more vertical guides and an insertion controller. The insertion controller may be configured to apply an insertion force to a memory module in a memory socket by controlling the movement of the one or more insertion rods on the one or more vertical guides. The movement of the one or more insertion rods may have a gradually decreasing deceleration as the insertion rods move towards the memory socket.

Abstract: An electro-hydrostatic drive for realizing a rapid movement and a force-building movement, comprising a hydro-machine with variable volume and/or rotational speed, driven by an electric motor, for providing a volume-flow of a hydraulic fluid, a first cylinder with a housing, a piston, a cylinder rod, and a first and a second cylinder chamber, a second cylinder with a piston, a cylinder rod, and a first and a second cylinder chamber, a moveable carrier plate, a pillar, and a clamping apparatus to clamp and/or unclamp the first cylinder to the pillar, where the hydraulic drive has a closed hydraulic circuit, which has, when run, a positive pressure above atmospheric pressure and which, by utilizing the hydro-machine, can pressurize either the first or the second cylinder chamber of the first cylinder and/or the first or the second cylinder chamber of the second cylinder. The moveable carrier plate is connected both to the first cylinder and to the second cylinder.

Abstract: A pulsed compression reactor may include a reactor housing, a spring piston, and a driver piston. The reactor housing may define an interior volume, and may include a first passage and a second passage which lead to the interior volume. The spring piston may be positioned within the interior volume, wherein the spring piston and the reactor housing at least partially define a perimeter of a gas spring buffer chamber within the interior volume. The driver piston may be positioned within the interior volume, wherein the spring piston, the driver piston, and the reactor housing at least partially define a perimeter of a reaction chamber within the interior volume.

Abstract: A mold clamping device includes a base, a stationary platen fixed to the base and supporting a stationary mold, a movable platen movable on the base and supporting a movable mold, and a mold clamping mechanism for clamping the movable mold against the stationary mold. Tie bars extend from the stationary platen completely through both the movable platen and the mold clamping mechanism. A shaft supporting plate is fixed to the base and has openings through which the tie bars slidably extend for supporting the tie bars. The shaft supporting plate terminates at its lower end portion in two spaced-apart shoes that are fixed to the base. The bottom surface of each shoe has a larger area than the cross-sectional area of the shaft supporting plate situated vertically above the shoe.

Abstract: A mold clamping device includes a base, a stationary platen fixed to the base and supporting a stationary mold, a movable platen movable on the base and supporting a movable mold, and a mold clamping mechanism for clamping the movable mold against the stationary mold. Tie bars extend from the stationary platen completely through both the movable platen and the mold clamping mechanism. A shaft supporting plate is fixed to the ends of the tie bars and terminates at its lower end portion in two spaced-apart shoes that have flat bottom surfaces in direct sliding contact with the base. The flat bottom surface of each shoe has a larger area than the cross-sectional area of the shaft supporting plate situated vertically above the shoe.

Abstract: Transforming station for transforming plastic parisons into plastic containers, wherein the transforming station has two side part supports for supporting side parts of a blow mould, and preferably has a base part support for supporting a base part of the blow mould, wherein these side parts and the base part of the blow mould together form a hollow space within which the plastic parisons can be transformed into the plastic containers by application of a free-flowing medium, wherein at least one of the two side part supports for opening and/or closing the blow mould is pivotable relative to the other side part with respect to a predetermined main axis, and wherein the transforming station has a locking mechanism in order in a closed state of the blow mould to lock a side part support with the other side part support, and wherein the locking mechanism has a second locking element which is pivotable with respect to a predetermined pivot axis and which interengages with a first locking element for locking the si

Abstract: The clamping device has a fixed platen, a moving platen which is movable in an mold opening and closing direction relative to the fixed platen, a tie bar which bridges the fixed platen and the moving platen, a pullout drive device which gives to the tie bar a driving force making the tie bar move to the back side of the fixed platen, and a support mechanism which is provided separately from the pullout drive device and support the load of the tie bar when moving the tie bar.

Abstract: A thermoforming machine is provided having a frame, a first platen, a second platen, a platen load shaft, and a load shaft latch. The first platen supports a first mold. The second platen supports a complementary second mold and is carried by the frame for movement toward and away from the first platen to engage and disengage with the first mold. The platen load shaft has a lock ledge with an engagement surface transverse to the load shaft. The load shaft is supported by the frame and extends between the first platen and the second platen. The load shaft latch has an engagement surface transverse to a central axis of the load shaft and is movable to engage and disengage the lock ledge transverse engagement surface. A method is also provided.

Abstract: A weld line formed by injection molding of a sealing member is formed at a circumferential position out of deepest portions of axial grooves, which form thinned portions of the sealing member (optimally, in a region of a cylindrical surface between the axial grooves in a circumferential direction). Thus, the sealing member is prevented from being provided with parts having locally markedly low strength, and hence damage to be caused by press-fitting is prevented.

Abstract: A vertically closing closure unit for an injection molding machine includes a moveable mold mounting plate, and at least one frame bar for guiding the moveable mold mounting plate. A vertical restraint device holds and locks the moveable mold mounting plate to the at least one frame bar.

Abstract: A method and apparatus for low pressure molding are disclosed. The molding apparatus comprises a frame, a mold assembly and a transmission assembly. The mold assembly may comprise a first mold and a second mold, the second mold being coupled to the frame. The transmission assembly may be coupled to the frame and to the first mold. A motor may be coupled to the transmission assembly for moving the first mold relative to the second mold. A pneumatic actuator may also be coupled to the transmission assembly for increasing clamping pressure between the first mold and the second mold.

Abstract: The invention relates to a mote molding machine which comprises a molding chamber (3), a front plate (1) closing the molding chamber at a front end and a rear plate (2) closing the molding chamber (3) at a rear end, opposite the front end. The plates shift gradually during the mote compression and extraction phases. The machine comprises a first shifting system for shifting the front plate and which comprises at least one first electric motor (4), and a second shifting system for shifting the rear plate and which comprises at least one second electric motor (5).

Abstract: When compressing a part, stress concentrations are prevented when it is removed from the mold by lowering an insert so as to release the top of a fine, flexible inner tube in such a way that it can expand in the location where the part will be removed from the mold, and can partially release the inner stresses in the part, in the area of the portion which has been removed from the mold.

Abstract: When controlling each operational process in a molding cycle by variably controlling the number of revolutions of a drive motor 3 in a hydraulic pump 2, a hydraulic pump 2 where at least multiple fixed discharge flow rate Qo and Qs can be set is used as the hydraulic pump 2. At the same time, the fixed discharge flow rates Qo . . . are set corresponding to operational processes based upon predetermined conditions in advance, respectively, and the hydraulic pump 2 is switched to the fixed discharge flow rates Qo . . . by corresponding to each operational process at the time of molding. At the same time, each operational process is controlled by variably controlling the number of revolutions of the drive motor 3.

Abstract: The invention relates to a tool (3) for compacting a sintered component or a powder for the sintered component, with a clamping element (10) and a compacting element (11) which can be radially adjusted in terms of its dimensions, with a contact surface for the sintered component or powder, which has a surface complementing the surface of the sintered component to be produced, and the clamping element (10) has an oblique first surface (12) and the compacting element (11) has an oblique second surface (13) complementing it, and the first and the second oblique surface (12, 13) co-operate in order to prise apart and open or make smaller the compacting element (11), and the clamping element (10) and/or the compacting element (11) can be displaced in the axial direction, and a support element (9) is provided if necessary.

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: Molding machines and methods of performing molding processes are described. One embodiment includes a base, a carriage disposed movably on the base, a first mold secured immovably to the carriage, a second mold disposed slidably on the carriage, a driving unit for moving the second mold on the carriage and toward and away from the first mold, a push shaft inserted telescopically into a pressure cylinder and pushing the second mold against the first mold, a synchronous transmission unit for moving said carriage synchronously with the second mold so that the first mold is moved to said second mold, and a pressure booster including a booster tube, and a telescopic booster rod extendable into the booster tube to transfer pressure in the booster tube to the pressure cylinder so as to boost the pressure inside the pressure cylinder.

Abstract: A plunger-cylinder assembly for a press including a plunger which is accommodated at least in part in a cylinder while separating the interior of the cylinder into two partial chambers along the cylinder axis. A relieving device which counteracts an increase in pressure of a fluid accommodated in the first partial chamber is disposed in at least one first partial chamber the increase in pressure being caused by a movement of the plunger along the cylinder axis in the direction of the first partial chamber. A hydraulic press encompassing such a plunger-cylinder assembly is also described.

Abstract: A molding device includes a device for displacing at least one molding tool (10, 10a), especially for the production of geometrics of plastic containers, by a linking motion (12) which brings the respective molding tool (10, 10a) into a closing position (I-I) for at least the closure of the mold. The linking position (12) can be operated by a drive (14). Based on the linking motion (12), a novel drive and displacement concept for the respective molding tool is provided, enabling the hydraulic means to be totally dispensed with a drive, preferably an electric drive, can be used, especially in the form of a stepping motor.

Abstract: In a molding machine, a fixed platen which supports a fixed die is disposed on one end of a base plate. A movable platen which supports a movable die and a supporting mount which supports each one end portion of the four tie bars are mounted on slide units. The movable platen and the supporting mount are advanced so as to close the die, a tip portion of each tie bar is locked to the fixed platen by a lock mechanism, and a die clamping cylinder provided on the movable platen is actuated to generate a clamping force so as to execute molding. After that, the lock mechanism executes an unlocking operation so as to cause the movable platen and the supporting mount to retreat to a die open position. Furthermore, an attaching and detaching mechanism releases the die clamping cylinder so as to cause only the supporting mount to significantly retreat from the movable platen, and thus the four tie bars are completely evacuated from the fixed die and the movable die.

Abstract: A thermal pressing machine has a case in which a fixed-side press plate is fixedly provided, a main shaft to which a moving side press plate is attached, a lever arm pivotally attached to the main shaft, a first drive mechanism coupled to a force point at one end of the lever arm, and a second drive mechanism coupled to a supporting point at the other end of the lever arm. The first drive mechanism first causes the lever arm to pivot on the supporting point to greatly move the press plate, and the first drive mechanism is then stopped to operate the second drive mechanism, so that the lever arm pivots on the force point to press the press plate against the press plate.

Abstract: Method for mold clamping of the present invention is capable of shortening a molding cycle without any initial setting works for an engaging position of a tie bars. The method is constituted the steps of moving the tie bars in the direction of mold closing during mold close operation, judging a relative moving speed between a movable die plate and the tie bar to be within a predetermined value, engaging the tie bars with the movable die plate mechanically by operating an engaging means when the relative moving speed is judged to be within the value, then further moving the movable die plate against a fixed die plate under engagement, and after contact of a movable mold with a fixed mold driving a mold clamping cylinder, thereby executing mold clamping operation.

Abstract: Injection molding apparatus with a stationary mold clamping plate and a moveable mold clamping plate as well as shafts fixed to one mold clamping plate and passing through openings in the other mold clamping plate, at least one of which has at least one thread on its free end, whereby at least on this free end of the one shaft a drive nut as well as an additional nut for the transmission of the closing force are arranged.

Abstract: A closing device for a mold closing unit includes: at least one hydraulic pressure cylinder unit for generating a mold closing pressure on an injection mold which is accommodated in a mold clamping chamber; a pressure piston disposed in the pressure cylinder unit, a piston rod of the pressure piston is disposed along a central axis of the pressure cylinder unit, and the pressure piston separates a high-pressure chamber of the pressure cylinder unit from a low-pressure chamber thereof; an hydraulic driver cylinder, associated with the pressure cylinder unit, for closing the injection mold assembly, which drive cylinder is disposed concentrically relative to the central axis, and an actual cylinder of the drive cylinder is formed by the pressure piston of the pressure cylinder unit; and an hydraulic compensating cylinder, associated with the pressure cylinder unit, for receiving or respectively dispensing hydraulic medium, which comes from the pressure cylinder unit or respectively is to be dispensed to said pr

Abstract: Method for mold clamping of the present invention is capable of shortening a molding cycle without any initial setting works for an engaging position of a tie bars. The method is constituted the steps of moving the tie bars in the direction of mold closing during mold close operation, judging a relative moving speed between a movable die plate and the tie bar to be within a predetermined value, engaging the tie bars with the movable die plate mechanically by operating an engaging means when the relative moving speed is judged to be within the value, then further moving the movable die plate against a fixed die plate under engagement, and after contact of a movable mold with a fixed mold driving a mold clamping cylinder, thereby executing mold clamping operation.

Abstract: A process for producing a golf ball which includes the steps of placing a rubber composition into the cavity of a mold having an upper portion and a lower portion, clamping the upper portion and the lower portion together at a moving velocity of from 0.03. mm/s to 1.0 mm/s, causing excess rubber composition to flow out from the cavities; and unclamping the mold and removing from the mold cavity spherical bodies and associated rubber flashers formed in the mold cavities.

Abstract: A golf ball 1 has a core 2 and a cover 3. For molding a core 2, a rubber composition is extruded from a kneading machine, and cut at a predetermined length to obtain a preforming material. The preforming material is placed in a mold and the mold is clamped. An upper portion and lower portion of the mold mate for more than or equal to 15 seconds, and thereafter they are unclamped until a clearance between the upper and lower portions becomes from 3 mm to 8 mm, then, the mold is shut. The shutting time is determined to be from 0.5 second to 5.0 seconds. By this unclamping of the mold, a residual air in a spherical cavity is released, which results in elimination of defective products.

Abstract: In a die clamping apparatus for an injection molding machine or the like, die clamping means for coupling and pressing a moving die plate 9 to a fixed die plate via a tie bar 15 has a die clamping cylinder consisting of two stages of a large-diameter cylinder 11 and a small-diameter cylinder 31 and a ram formed into two stages of a large-diameter ram 13 and a small-diameter ram 25. The large-diameter ram 13 is inserted in the large-diameter cylinder 11, and the small-diameter ram 25 is inserted in the small-diameter cylinder 31. The proximal end portion of the tie bar 15 is connected directly to the small-diameter ram 25. Large oil chambers 11c and 11d are provided on both sides of the large-diameter ram 13, and a small oil chamber 11e is provided on the tie bar connection side of the small-diameter ram 25. An oil pressure is supplied appropriately to each of the large oil chambers and the small oil chamber in the die clamping cylinder to appropriately move the tie bar 15.

Abstract: A drive for a movable part, such as a mold closure platen, includes two hydraulic cylinder-and-piston units defining first and third pressure chambers in a first of the hydraulic units and defining fourth and fifth pressure chambers in a second of the hydraulic units, and wherein the piston of one of the hydraulic units is a stepped piston defining a second pressure chamber, thereby providing five pressure chambers. An arrangement of valves provides for selective coupling of hydraulic fluid among the pressure chambers whereby pressure medium is forced from one of the hydraulic units, during an advance of its piton, to the other of the hydraulic units.

Abstract: In an injection-molding machine, the rapid traversing over long distances takes place with the aid of linear drives (L1, L2), the “rotor” (H1, H2) which is a component part of the machine construction.

Abstract: A molding machine includes a mold space between two mold carriers. One of the two mold carriers is movable relative to the other by a drive. A separate power unit generates a predetermined closing force between the two mold carriers when the two mold carriers are moved together. The separate power unit comprises, for its actuation, a pressure cushion filled with a composition that is highly viscous by comparison with hydraulic oil.

Abstract: A method of injection-moulding includes separating an injection nozzle from a mould during every moulding cycle. An apparatus for carrying out the method is also disclosed.

Abstract: An actuator for a press comprises a piston disposed through a small bore diameter high speed actuating cylinder, having a piston head disposed within the actuating cylinder and another piston head disposed within a larger bore diameter hydraulic clamping cylinder to apply the required clamping force to the press.

Abstract: The invention relates to a novel method for producing precision parts, especially flat optical data carriers. According to the invention method, the embossing procedure is program-controlled on the basis of the path function of an electromechanical or hydraulic drive of the driven mold half. When a servomotor is used, the internal path signal thereof can be directly used for calculating the path function or for operating the program control. The novel method allows for a complete speed control of the embossing phase. All factors that can be mechanically influenced from the exterior are detected in more detail for the conditions before and during the embossing phase, thereby allowing for an optimum precision and reproducibility.

Abstract: A stationary platen (14) and a movable platen (18), which are connected with each other by tie rods (28), to which metallic molds are respectively attached, are opened and closed by an electrically driven ball screw mechanism. The movable platen is composed of a platen body and a pressure plate (304) attached to the platen body which can be contacted with and separated from the platen body. Between the movable platen and the pressure plate, clamping is conducted by the expansion and contraction of a bladder (318) into which hydraulic oil for clamping can be introduced. The bladder houses an insert die (320), the shape of which is identical with an internal shape of the bladder, and a hydraulic oil path is formed in the insert die. While a ball screw member (102) of an electrically driven ball screw mechanism is being supported being capable of moving in the axial direction, a brake means (130) for restricting rotation is provided, and a mold releasing cylinder mechanism (116) is connected.

Abstract: Device for injection moulding of plastics, with a plasticizing and injection unit (3), that is provided with at least one electrical drive system (6) for turning a plasticizing screw and for injecting the plasticized plastics material between the mould halves (16), wherein the injection moulding device is provided with at least one additional drive unit that firstly moves a machine part in a linear manner, and subsequently presses it against a fixed stop, and the additional drive unit is configured as a pneumatically actuated piston-cylinder unit (8, 18, 28, 38) and the force exerted by the piston assumes different values at a given gas pressure according to the setting of the piston.

Abstract: A mold clamping unit employed in an injection molding apparatus for opening and closing a mold having a movable mold plate and a fixed mold plate. The mold clamping unit comprises a mold clamping cylinder, mold opening means for applying a mold opening force of a predetermined magnitude to the movable mold plate in the direction from the closed position to the fully open position and moving the movable mold plate from the closed position to the predetermined half-open position located between the closed position and fully open position, and switching means for switching the mold clamping force generated by the mold clamping cylinder between the first mold clamping force which is larger than the mold opening force and a second mold clamping force which is smaller than the mold opening force by switching the supply pressure of working fluid supplied to the mold clamping cylinder.

Abstract: In an injection molding machine, rapid movement over long distances is carried out with the aid of conventional means, as is the action of locking in the working position. The novel feature is, then, that in order to hold counter to the flow front of the injected material, piezoelectric actuators (P11 to Pnn) are used.

Abstract: An injection molding machine having four tie bars extending through and between a movable platen and a fixed platen each of which carry a half of a mold. To enable the movable platen to withstand the forces which arise during a molding process, a pressure control mechanism including a piston in association with each tie bar is received within a corresponding recess provided in the movable platen and in order to grip the tie bars during the molding process a gripping mechanism is provided which is supported by the piston such that the gripping mechanism and the piston effectively form a single movable unit. The gripping mechanism comprises a pair of gripping jaws which are transversely movable and are moved by way of a rotatable disc which is also provided in the single movable unit.

Abstract: An integrated circuit encapsulation apparatus comprises a molding press, which has a mold defining a cavity adapted to receive an integrated circuit die and an attached leadframe for encapsulation thereof. The molding press is operable by an electro-pneumatic driving mechanism which utilises a geared servo motor for opening and closing the mold, and a pneumatic cylinder for providing clamping pressure. Both the servo motor and pneumatic cylinder act upon a threaded screw member for movement of the molding press. The press is provided with an integrated mold brushing unit which has transversely rotating brushes and travels over the mold faces to remove debris. In a further refinement, a spring-loaded bearing system is provided for easy removal of the mold.

Abstract: The mold press includes a drive arrangement for controlling press movement and closure force. The drive arrangement includes a pair of generally identical drive units connected between upper and lower press plates adjacent opposite longitudinal ends of the press. The drive units in a preferred embodiment each employ a ball-screw drive arrangement. The screw shaft extends vertically between the top and bottom press plates. The screw shaft engages a ball nut mounted on one press plate, typically the bottom press plate which is disposed for movement toward and away from the top press plate. A first high speed drive arrangement employing a first electric motor is coupled to the screw shafts for effecting high speed opening and closing of the bottom press plate.

Abstract: A threaded actuator is disclosed for positioning a core in a molding apparatus. The threaded actuator includes a hydraulic cylinder unit having a piston rod connected to the core for positioning thereof. The core is subjected to intense force during the molding process and this force is transmitted onto the piston rod and hydraulic cylinder unit and its support. The hydraulic cylinder has a threaded nose which is secured within a threaded opening in a support. A rotatable threaded connecting member is threaded between the threaded nose and the threaded opening of the support structure. The outer and inner threaded connections of the rotatable threaded connecting member are of different thread configurations to form a differential thread assembly. The configurations may differ either in pitch and/or in the handedness of the threads. The differential threaded assembly provides for relative positioning of the hydraulic cylinder unit and core relative to the mold.

Abstract: A clamping assembly for an injection molding apparatus includes a first platen attached to a base and a second platen slidingly associated with the base. A number of tiebars are mechanically linked to each of the platens through a number of mechanical linkages. An actuation system associated with the plurality of tiebars and with at least one of the platens is configured to generate movement of the second platen relative to the first platen. The mechanical linkage between each of the tiebars and at least one of the platens includes a threaded bushing engaged with a threaded portion of the tiebar. The actuation system is configured to generate relative rotation between each of the tiebars and a corresponding one of the threaded bushings.