Abstract: An automatic filling machine for forming, sizing, transferring and inserting a food product portion into a container. The machine has forming chambers that are expandable to facilitate receiving a food product in bulk and are contractible to define a column having a cross section mating that of a container to be filled. The chamber is expanded to receive a quantity of a food product that is to be inserted into a container. The chamber is contracted to form the food product received therein into a column as defined by the contracted chamber. An upper plunger is provided to force and compress the formed food product column into a sizing apparatus. A pressure switch controls the compressive force applied to the food product column to provide consistency between sized portions of the food product.

Abstract: A metal shavings and chips compactor for extruding oil from metal chips and shavings and compacting the metal into easily transportable pellets. A compactor cylinder contains a piston and has an opening through which an auger feeds metal chips and shavings. A gate closes an end of the cylinder. A first hydraulic drive drives the piston under low pressure to close the opening and apply a first compacting pressure on the metal to form a loosely compacted pellet in the cylinder. High pressure then operates the piston to form a compact metal pellet substantially void of interstices. A second hydraulic drive opens the gate; the piston is operated at low pressure to discharge the compact metal pellet from the chamber and oil is collected below the cylinder. The compacting pressures are achieved through mechanical advantages provided by the size of the piston to that of the first hydraulic drive.

Abstract: This invention relates to automating a process for manufacturing articles from plastic, particularly recyclable plastic waste. A lengthened separator head is flanged to a plasticizer to supply melting serially to several molds, by way of mold inlet shut-off mechanism. A preprogrammed control device monitors the filling of a respective mold by way of a pressure sensor in the mold. When the desired filling of the mold has occurred, the inlet shut-off mechanism is closed by the control device and another mold that is ready to be filled is filled with melting by the opening of the corresponding inlet shut-off mechanism at the another mold. In addition, the control device controls the locking and tightening of the mold as well as its opening and emptying.

Abstract: A horizontal injection and compression molding apparatus has an injection device (3) and a compression molding device, wherein the compression molding device (2) includes: a stationary die plate (12) for holding a stationary die (11), a movable die plate (22) for holding a movable die (21), means (30) for rapidly extending and retracting the movable die plate (22), relative to the stationary die plate (12), means (40) for locking the movable die plate (22) to tie bars (51) at a position where the movable die plate (22) approaches the stationary die plate (12), and means (50) for fastening the dies after the movable die plate (22) is locked to the tie bars (51); and wherein the injection device (3) for feeding a molten plastic material into a mold cavity (90) between the stationary die (11) and the movable die (21) is characterized in that it initiates feeding of the molten plastic material into the mold cavity ( 90) when the stationary die (11) and the movable die (21) are parted from each other by a predeter

Abstract: A process for making porous flexible pipes from two feed streams containing a thermoplastic material and a thermoset material, in which the feed streams are delivered to a die head extruder in a substantially compaction-free and segregation-free manner to insure that the feed composition in the extruder is substantially the same as the initial feed composition. The process can be automated so that an operator can manufacture porous flexible pipes of desired porosity and other rheological and mechanical characteristics by simply entering a command which will simultaneously adjust the process parameters such as the temperature and/or pressure inside the extruder, and the post-extrusion tension to meet the special need.

Abstract: To eliminate the fluctuations in the precision of the material distribution which could not be avoided when manufacturing pipes in the centrifugal moulding process with the prior art installations, a new process and an installation for carrying out the process is proposed. This has at least two cylindrical centrifugal drums (1) serving as moulds and an injection carriage (12) which is displaceable in two directions perpendicular to each other, with a feed arm (11).

Abstract: A rotary press having a dispensing device for dispensing granular material on to a rotary table. The dispensing device has a frame located on the table and into which granular material is discharged from a discharge port connected to a vessel containing the granular material. The vessel and thereby the discharge port is arranged to be raised or lowered by a drive unit so as to vary the feed of the granular material from the discharge port into the frame. Guide fingers projecting internally from the frame guide the granular material into a die cavity as the table rotates.

Abstract: A method of detecting the characteristics of resin in an injection molding machine having an on-off operating mechanism for the flow path of the resin and a method of controlling the weight of the injected resin on the basis of the detected characteristics of the injected resin. Such an arrangement is adopted that, in a state where the aforesaid flow path on-off operating mechanism is closed after the resin in plasticized and measured, processes, in which urging forces of predetermined urging values p.sub.o, p are applied to the screw to balancingly move the screw until it stops, are successively carried out under a given molten state value Z of the resin, and the relationship between the urging value p.sub.o, p and the moving distance S.sub.T of the screw are approximated by a given functional equation, to thereby obtain the relationship between a molten resin pressure P and a molten resin volume.

Abstract: Improved apparatus and methods for forming a layer of material over a surface of a previously-formed cross-section of a three-dimensional object in anticipation of forming a next cross-section of the object out of the layer. A volume of material, including at least some excess material, is placed over the surface, and the excess material is swept off by placing the excess material in the predetermined path of a sweeping member, the path being substantially in a plane spaced from a working surface of material. The member may be directed to sweep the excess material away through a successive number of sweeps, which may vary for each cross-section, at least a velocity which may vary for each sweep. Additionally, the clearance between the member and the surface of the previous cross-section may vary for each sweep. A "winged" member is also provided, comprising two legs extending from a base, and a "Trident" embodiment is also provided, comprising three legs extending from a base.

Abstract: A molded workpiece is formed using a mold having an inner cavity, an injection port which communicates with the inner cavity for permitting molding material to be injected into the inner cavity, and at least one disposable vent line. The vent line has sidewalls which are substantially transparent to light and provides for venting gases from the inner cavity as molding material is injected into the cavity. A material injector is coupled to the injection port for injecting molding material into the inner cavity through the injection port. A removably sensor receives the disposable vent line for detecting when molding material has substantially filled the vent line and for generating a first signal indicating that the vent line is substantially filled.

Abstract: A method of monitoring a resin position intended to automatically display the relationship between the state of resin injected into the cavity and the screw position for monitoring. In the cavity, border sections where flow resistance of the injected changes are determined. Subsequently, a volume is found for each of the regions partitioned by the border, and the obtained volume is set into the control unit of the injection molding machine. The control unit displays the injection completion position when the amount of cushion Lc is inputted (200, 201). Moreover, the amount of a screw stroke Sj is determined on the basis of the volume determined for each of the positions having different flow resistance, and a screw diameter. Each amount of the screw stroke Sj is added to the amount of cushion Lc in sequence to find screw positions, which are to be displayed as injection speed changeover positions (203).

Abstract: An apparatus for portioning dough has a filler hopper (31) for the dough in which hopper a pre-portioning tool (51) in form of two star rollers (32) is disposed which rotate in inverse direction and are driven by a drive device if the amount of dough in a chamber (30) below decreases a predetermined value. From this chamber the dough (30) is pressed by a pusher device (25) in receiving openings (4) on the periphery of a step-wisely rotated drum (2). The volume of dough in the chamber (30) is controlled by a capacitive sensor (35) embedded into the wall (36) of the filler hopper (31) so that this sensor (35) does not interfere with the stream of the dough.

Abstract: An injection molding apparatus uses motors to effect measuring and kneading of a material to be molded and injection driving. The amount of movement of a rotary shaft or rectilinearly moving means connected to a screw is detected by a sensor, and the driving of the volume measuring motor and the injection motor is effected by the output of the sensor.

Abstract: Multiaxis rotational molding apparatus includes a raw material supplying portion including a plurality of reservoirs connected independently with a mixing portion through conduits. A supporting portion includes a plurality of frame members disposed between upstanding end sections and rotatably supported thereon. A molding portion rotatably supported within the frame members includes at least one rotatable mold assembly with at least two separable mold sections. The mold sections include at least two optical fiber elements extending through the mold sections with one end of each optical fiber element terminating at a mold cavity forming surface of a mold section and an opposite end of each optical fiber element terminating at a remote second surface thereof. A signal generator disposed adjacent a remote surface end of one optical fiber element and a signal sensor disposed adjacent a remote surface end of another optical fiber element.

Abstract: An apparatus for making earthen blocks and having a hopper, structure for loading the hopper with a compactible material, structure for verifying that the hopper is filled to a predetermined level, structure for moving the hopper to a mold cavity and emptying the contents into the mold cavity, a first press having a first punch to be forced into the mold cavity to compress the material therein and a second press having a second punch that is held in a fixed position until a predetermined force is exerted by the first press, whereupon the second punch follows movement of the first punch.

Abstract: A resin transfer molding apparatus includes a single-shot metering pump which feeds a predetermined amount of resin material to the mold with a single stroke of the pump via an injector assembly which is mounted on the mold. A closed-loop hydraulic control of the metering pump enables the injection rate and pressure of the resin to be varied during the injection cycle to produce a more consistent fill of the mold and eliminate part waviness caused by pressure rise and fall. The mold-mounted injector assembly and placement of a plurality of valves in the apparatus enables recirculation of unused resin material back to the supply tank at a temperature sufficiently cool to prevent curing, so that solvent flushing of the apparatus can be eliminated in most cases. The apparatus is automatically controlled by a computer resulting in an integrated automatic apparatus.

Abstract: Apparatus for and related methods of forming three-dimensional objects out of a building material, which is normally solid but which is flowable when heated. In one embodiment a support material is used to fill in portions of layers which are not to be solidified as part of the object to provide support to otherwise unsupported portions of other layers. Advantageously, the support material is also normally solid and flowable when heated, and has a lower melting point than the building material enabling the support material to later be removed without damaging the object. In an alternative embodiment this support material can be used to build a support such as a web support or the like for supporting an object surface from a second surface.

Abstract: An apparatus according to the invention is for treating waste materials of foam resin products having been used mainly as packing or wrapping materials, which is provided with a crushing room furnishing stationary cutting edges and rotatably moving cutting edges at the lower part of a hopper into which the waste foam resin materials are thrown, and at the outside of the crushing room, a cylindrical volume shrinking mechanism which receives the destroyed resin products and send them in succession, heats to soften and fuse them one another, and effecting heat and pressure thereto so as to de-foam and extrude the resin like a hot chewing cake or a hot birdlime. The cylindrical volume shrinking mechanism has an extruding nozzle opening upward, from which the resin is charged into a metal mold cylinder and when this charging amount reaches to a certain level, the operation of the cylindrical volume shrinking mechanism is stopped.

Abstract: A system for injecting molten material into a receiving apparatus, such as a moulding apparatus. The system according to the invention utilizes at least a melting chamber and an injecting chamber which are incorporated in a same housing and which are connected through a canal for transferring molten material contained in the melting chamber to the injecting chamber. The system further utilizes an apparatus for controlling the feeding of the injecting chamber and the triggering of the injecting apparatus when the injecting chamber has a predetermined quantity of molten material to be injected.

Abstract: A method and apparatus for moulding a fluid settable material. The apparatus includes male and female mould halves defining between them a mould cavity having an inlet thereto for the introduction of a fluid settable material; between the male and female mould halves of the cavity a seal can be interposed to seal the mould cavity from the atmosphere. At least one vacuum outlet from a mould half leads via an isolation valve to a vacuum source.

Abstract: An injection molding method uses motors to effect measuring and kneading of a material to be molded and injection driving. The amount of movement of a rotary shaft or rectilinearly moving means connected to a screw is detected by a sensor, and the driving of the volume measuring motor and the injection motor is effected by the output of the sensor.

Abstract: An apparatus for forming multiple layer preforms wherein the various layers may be varied as to number, material, thickness and position in the preform by controlling the injection of the specific materials as to timing, quantity and rate of delivery. Most specifically, a featured aspect is the ability to simultaneously deliver to an injection nozzle and through such injection nozzle into a preform mold cavity two or more molten plastic materials simultaneously. This is possible by way of a multiple gate nozzle and a plurality of separately operable metering pots all controlled by way of a timing device. The timing device may also control the rate of the dispensing an individual material from each of the metering pots.

Abstract: The invention is embodied as a raw material resin feeding apparatus for a molding machine, such as an injection molding machine or an extruder. In this system, upon carrying out a variable resin-change operation by making use of material to be changed, raw material resin is intermittently fed to a feed section by intermittently opening and closing a resin passageway. The improvements reside in that the apparatus includes a raw resin material feed selection mechanism provided midway along a resin passageway for selectively either feeding a predetermined amount intermittently or continuously to a feed section. A resin-change resin feed start detector mechanism is provided for detecting completion of discharge of the amount of raw material corresponding to the predetermined amount, and a resin-change completion detector mechanism is provided. With this apparatus, raw material can be selectively fed to effect quick resin-change or for normal operation.

Abstract: A method of molding a plastic resin having for its object to enable the filling or spreading speed of a molten resin in a mold to be controlled in compliance with the shape of an article to be molded by changing the opening and closing speed of the mold or the injecting speed of the molten resin in an injection unit in compliance with the amount of the molten resin charged into the mold or the amount of the molten resin injected by the injection unit so that a stable molded article can be produced in a short time even in case the shape of a product to be molded is changed, and an injection-compression molding machine constructed to achieve the molding method.

Abstract: A molding method in an injection-compression molding machine provided with an opening/closing valve between an injection unit and a metal mold, in which in order to make a density of molten resin uniform for resulting in production of stable molded articles, before the molten resin is injected into the metal mold, the aforementioned valve is closed to carry out preliminary pressing within the injection unit, and thereafter pressing on the molten resin is carried out within the metal mold during injection or after injection, as well as a molding apparatus for achieving the above-mentioned method. This molding apparatus includes the valve (40) disposed so as to be freely opened and closed in the flow passageway (46) of the molten resin provided between the injection unit (10) and the metal mold (30) for effecting blocking or change of a cross-section area of the above-mentioned flow passageway.

Abstract: A molding device for manufacturing a multiple layer product includes an extruder for extruding material to be molded, a blow head for receiving the material from the extruders and for supplying the material to a mold, and a passage connected with the extruder and divided into a plurality of branch passages connected with the blow head. An accumulator is provided on each of the branch passages, and a detector is provided in the accumulator for detecting the quantity of material introduced into the accumulator. A lock device locks the accumulator when the quantity of the material detected by the detector reaches a predetermined value, As a result a homogeneous layer can be obtained across the product.

Abstract: An apparatus for laying a mat of fibrous material which includes an upwardly inclined belt onto which the fibrous material is fed, one or more combing roller located above the belt, a stripping roller at the upper end of the belt for removing the material from the belt and passing it into a mechanism for laying the material into a mat. The angle of inclination of the incline belt and the position of the first combing roller as such that the material can build up to reach a critical angle of repose and then slide back down. A second combing roller located upstream of the first combing roller serves to comb the material to a constant depth, and the speed of the incline belt is adjustable to determine the amount of material leaving the incline belt and thus regulate the thickness of the formed mat.

Abstract: The invention relates to a blow molding machine for the blow molding of hollow articles, with an accumulator head (1) for producing a preform and with a blow mold for forming a hollow article from the preform. After completion of a blow molding sequence, a piston positioning signal is derived by a control system (15), to regulate the position of a discharge piston (4) in the accumulator head (1), from a comparative signal of the actual position and set position of the discharge piston (4). The set position is determined by integration from a previously specified speed set point profile. The control system (15) further superimposes an influx signal on the comparative signal, which corresponds to the change in volume of plastic flowing from an extruder (2) to replace the discharged contents of the accumulator head (1).

Abstract: A blow molding machine for the blow molding of hollow articles includes an accumulator head (1) for producing a preform and a blow mold for forming a hollow article from the preform. After completion of a blow molding sequence and the filling of the accumulator head (1), a piston positioning signal is sent by a control system (15) to regulate the position of a discharge piston (4) in the accumulator head (1) derived from a comparative signal of the actual position and set position of the discharge piston (4). The set position is determined by integration from a previously specified speed set point profile. The control system (15) further superimposes an influx signal on the comparative signal, which corresponds to the change in volume of plastic flowing from an extruder (2) to replace the discharged contents of the accumulator head (1).

Abstract: A method and apparatus for manufacturing one phase of a silica crucible including controlling the filling of a hollow mold of cylindrical shape, which rotates about its vertical axis, with grains of crystallized quartz. The grains of material are continuously introduced into the mold and are deposited on or near the lateral wall face of the mold in the form of a cylindrical layer, E, of internal radius R. A beam of light is directed to form a luminous spot on the summit of the layer from the commencement of its formation and the radial displacement of the spot on the layer is observed. The height at which the grains are introduced and the height of the trajectory of the luminous beam are modified as a function of the position of the luminous spot relative to determined reference points.

Abstract: An apparatus for the mixing and continuous extrusion of a plastic mass having a first stage in which an intermittently operating mixer receives the starting materials batchwise and a second stage having a screw extruder which is supplied at periodic intervals, with material from the intermittent mixer. In order to provide a simple, inexpensive apparatus for two-stage mixing and extruding in which the full output of the first stage can be used and, independently of the state of the intermediate product, a continuous feed of material into the screw extruder of the second stage is effected. The second stage has mixing and kneading blades continuously rotating within a trough and an extrusion screw which extends along the bottom of the trough into an extrusion cylinder. A continuous drive motor for the extrusion screw is controlled so that the trough is always filled at least to 25% of its volume.

Abstract: A separator manufacturing apparatus includes a transfer roller (2) with a plurality of annular shaping grooves (1) having a predetermined shape in cross section which are formed in the outer circumferential surface of the transfer roller (2) in its circumferential direction, a resin feeding device (4) with nozzles (3) to feed a hot-melt type resin to the annular shaping grooves (1) of the transfer roller (2), a base paper feeding device (5) to feed a continuous paper (w) at a predetermined speed to the outer circumferential surface of the transfer roller (2) supplied with the resin to thereby form by transfer a plurality of ribs (9) on a surface of the continuous paper (w), and a fault detecting device (6, 36, 46) to detect the shape and/or a dimension of the rib (9) formed by transfer. A resin drop receiving device (53) or an annular shaping groove cleaning device (63) may be provided so that maintenance of the transfer roller (2) can be easy.

Abstract: A plastic material molding apparatus, wherein when the pressure at a material inlet of a cylinder of a material holding mechanism increases as a piston in the cylinder compresses a resilient member provided in the material holding mechanism, the speed of a motor for driving a material fluidizing mechanism is reduced. A servo motor for intermittently driving a plastic material metering and delivering mechanism is controlled according to the revolution speed and a predetermined total number of revolutions of the servo motor and to the number of pulses from a pulse generator provided in the servo motor. A relief valve is interposed between a material delivery port and a delivery nozzle of the metering and delivering mechanism, the relief valve being adapted to open when the material pressure at the delivery port is higher than the relief pressure, the relief pressure being set higher than the vapor pressure according to the temperature of the material at the delivery port.

Abstract: An extrusion molding equipment for a multi-layer parison which includes an operation position detecting device for detecting an operation position of an accumulator extruding an layer of resin material invisible from outside the parison. A pressure detecting device is provided for detecting pressure of the inner resin material in an inner resin conduit. An extrusion amount control device for the inner resin material is also provided for controlling an extrusion amount of the inner resin by the use of a signal indicating the operation position from the operation position detecting device, and a signal indicating the pressure from the pressure detecting device.

Abstract: Continuous strands of color concentrate are metered into the feed zone of a screw-melter polymer extruder where they are cut into pellets by the shearing action of the flights of a rotating screw against the extruder housing. These pellets are mixed within the extruder with a thermoplastic polymer to be colored and this mixture is then melted and extruded into a useful article, for example, a fiber for textile or carpeting end-use.Additionally, color concentrates can be first formed into continuous strands and stored conveniently on a spool for subsequent metering into the polymer extruder.

Abstract: An apparatus and system is disclosed for fabricating refrigeration cabinets of the type including an outer shell and inner shell separated by an insulating medium, such as polyurethane foam. The inner and outer shells are each formed of a plurality of plates which, according to the invention, are maintained in their respective relative positions long enough to permit the insulating medium forming components to be introduced therebetween and to cure and adhere to the plates so as to thereafter maintain the plurality of plates in their predetermined relative positions as an integral cabinet without the need for prior securement.

Abstract: The apparatus for extrusion of a thermoplastic material comprises an extruder with an extruder screw and an extruder housing with a feed opening, a feed device, a drive with a variable speed motor and a regulating device cascade for the mass temperature. The regulating device cascade has a plurality of tempering zones, at least one mass temperature detector and at least one tempering device. One tempering zone connected directly to the feed opening is part of the regulating device cascade and the temperature in the one tempering zone is corrected by a set value during a mass temperature variation. To provide a temperature regulation range which does not experience disturbing decreases, the tempering zone at the feed opening has only a cooling device and has a grooved sleeve. The feed device is a gravity feed device and belongs to an additional regulating loop which controls the rotational speed of a variable speed motor.

Abstract: A foam extrusion system and method employs a horizontal vacuum chamber with a bulkhead and extrusion die at one end of the chamber, the extrusion die being inside the chamber when the bulkhead is closed. A liquid baffle, preferably water, is provided at the opposite end of the chamber through which the extrudate passes from the chamber to atmosphere. The baffle comprises a pond of liquid having a higher level in the chamber and a lower level outside the chamber. The higher level of the pond is formed between a dam plate and a seal plate, the latter forming the opposite end of the chamber. The seal plate includes a size adjustable window through which the extrudate passes, the extrudate being guided by a conveyor to extend inclined downwardly into the pond and to exit through the seal plate and pond with a large radius upwardly curved section.

Abstract: Apparatus for making a reconstituted food product such as pepper, tomato, arian, anchovies and the like including a feed hopper level control, conveyor and a calcium chloride bath for gelling the food material.

Abstract: A metering system of an injection molding machine which uses a numerical control unit (10), having a torque limit function, in order to control a rotating speed and a back pressure of a screw (1) in accordance with a screw position.The numerical control unit (10) reads out, from a non-volatile memory (14), a screw rotating speed command value and a torque limit value in accordance with a screw position detected by an encoder (P1), and outputs the readout screw rotating speed command value and torque limit value to a second servo motor (M2), which rotates the screw (1), and to a first servo motor (M1), which drives the screw (1) in the axial direction, respectively.

Abstract: The molding machine of the present invention comprises a screw extruder for extruding plastic material. A plurality of molds are moved one at a time to the outlet end of the extruder for receiving the plastic material therefrom, One end of the mold is open for receiving the plastic material and the opposite end of the mold includes a closure plate covering the end of the mold. The closure plate has a small fill sensing aperture therein. A sensing switch is mounted adjacent the fill sensing aperture and is adapted to sense when molded plastic exits from the fill sensing aperture so as to shut off the extruder and cause the mold to move away from the extruder so that an additional mold can be filled. A cylinder operated closure device clamps the opposite ends of the mold after the mold has moved away from the filling station so as to contain the plastic material within the mold while the plastic material cools and hardens.

Abstract: An arrangement for the production of vitrified slag includes a rotating cooling drum provided with an internal cooling and on whose surface molten-slag-receiving recesses are provided. The site of impact of the slag is approximately at the uppermost point of the cooling drum. In order to ensure the vitrification of the slag with the flowing of molten slag off the cooling drum being reliably prevented, and an economic production of solidified slag being ensured, the recesses are separated by webs in the circumferential direction of the cooling drum and in the end region of the cooling drum are designed to be closed in the axial direction thereof. A plurality of cooled counter rolls contacting the webs by their surfaces and aligned with their axes parallel to the cooling drum are provided. They are arranged after the site of impact of the slag in the rotation direction of the cooling drum and one behind the other in its circumferential direction.

Abstract: An apparatus and system is disclosed for fabricating refrigeration cabinets of the type including an outer shell and inner shell separated by an insulating medium, such as polyurethane foam. The inner and outer shells are each formed of a plurality of plates which, according to the invention, are maintained in their respective relative positions long enough to permit the insulating medium forming components to be introduced therebetween and to cure and adhere to the plates so as to thereafter maintain the plurality of plates in their predetermined relative positions as an integral cabinet without the need for prior securement.

Abstract: The continuous production of electrode material consisting of pitch, coke dust and coke particles of variable sizes comprising the steps of mixing and kneading the components in a horizontally arranged mixing and kneading device. An extruder is provided at the output end of the mixing and kneading device and connected with the same by way of a vertically arranged chute. The rotation of the extruder is controlled by a sensoring device provided in the vertically arranged chute. A lateral ejector orifice provided in the chute is shut off by means of an ejector flap subject to the influence of a control device; this in turn also exerts its influence on the extruder drive. The forming operation is completely separated from the mixing and kneading process, so that no mutual influencing can take place.

Abstract: An injection molding apparatus including a barrel for holding molten plastic material, a first passage connected at one end with the barrel for receiving hot plastic material from the barrel, a second passage connected with the other end of the first passage for receiving molten material from the first passage for supplying the material to a mold, a cylinder, a third passage connected at one end with the cylinder and connected at its other end with the second passage, a piston in the cylinder, movable by pressure means in one direction to maintain pressure on molten material in the cylinder, the third passage and the second passage, and movable by pressure means in the other direction to exert a suction action in the cylinder, the third passage and the second passage for drawing molten material in the second passage back into the third passage and the cylinder, and a valve means.

Abstract: The molding machine of the present invention comprises a screw extruder for extruding plastic material. A plurality of molds are moved one at a time to the outlet end of the extruder for receiving the plastic material therefrom. One end of the mold is open for receiving the plastic material and the opposite end of the mold includes a closure plate covering the end of the mold. The closure plate has a small fill sensing aperture therein. A sensing switch is mounted adjacent the fill sensing aperture and is adapted to sense when molded plastic exits from the fill sensing aperture so as to shut off the extruder and cause the mold to move away from the extruder so that an additional mold can be filled. A cylinder operated closure device clamps the opposite ends of the mold after the mold has moved away from the filling station so as to contain the plastic material within the mold while the plastic material cools and hardens.

Abstract: An injection apparatus of an injection molding machine includes a heating cylinder and a screw disposed in the heating cylinder, and the screw is axially moved and rotated in the heating cylinder for plasticizing the molten material by mechanisms or devices assembled in the injection apparatus, which is driven by electric drive means through driving power transmission means. The electric drive means comprises two servomotors and the power transmission means comprises two power transmission mechanisms operatively connected to the servomotors respectively so that one of the two servomotors drives a mechanism for axially moving the screw through one of the two power transmission mechanisms and the other of the two servomotors drives a mechanism for rotating the screw through the other of the two power transmission mechanisms, parallelly or concurrently.

Abstract: Apparatus for producing a gradient gel which serves as a standard medium for a two-dimensional analysis of proteins, the gel having a density gradient along its height formed by a variation in gel composition, with the apparatus including first and second pumping means each including a plurality of pumps on a common shaft and driven by a stepping motor capable of providing small incremental changes in pump outputs for the gel ingredients, the motors being controlled, by digital signals from a digital computer, a hollow form or cassette for receiving the gel composition, means for transferring the gel composition including a filler tube extending near the bottom of the cassette, adjustable horizontal and vertical arms for automatically removing and relocating the filler tube in the next cassette, and a digital computer programmed to automatically control the stepping motors, arm movements, and associated sensing operations involving the filling operation.

Abstract: A pressing device for producing compacts from source material in powder form in a die-plate bore with a filling shoe and a feed tube with feedscrew as metering means of a reservoir for the source material powder wherein in the transport path for the source material powder, between the end of the feed tube and an outflow opening of the filling shoe, is a passing sieve with associated passing element for removing agglomerates in the source material powder.

Abstract: A cut-off process for an injection molding machine for forming two-layer, directly laminated footwear soles and includes a pressure transmission pin which is guided in a passageway constructed as a through-hole between the mold cavity and the outer surface of the mold. The pressure transmission pin is preloaded by a spring in the direction of the mold cavity so that it can be depressed or actuated under injection pressure. When the injection pressure is relieved and the molded piece shrinks, the pressure transmission pin will be moved back by the spring to its initial position, thereby releasing a switch for a new switching operation for the next, second, injecting operation.