Abstract: An injection assembly for an injection molding machine, with a continuously operating plasticizing unit, includes a piston-type injection unit and an arrangement for intermediate storage and discharge of melt. Several melt reservoirs with melt inlet openings are provided between the plasticizing unit and the piston-type injection unit. Melt lines that connect the melt reservoirs with each other and with the plasticizing unit extend to the melt inlet openings. The melt reservoirs include actuatable work pistons for discharging the melt, wherein the work pistons can open and close the melt inlet openings in the melt reservoirs to divert the melt flow. The disclosed injection unit increases the total volume of bufferable melt and allows individual and separate adjustment of the reservoir volumes and the discharge velocity of the individual melt reservoirs. In addition, switching valves can be eliminated since the melt flow is switched by the work pistons.

Abstract: The invention relates to an electromechanical linear drive, in particular for an injection moulding machine, comprising an electric motor with a hollow-shaft rotor, open on one side, with a subsequent screw gear which converts the rotational movement of the hollow-shaft rotor into a linear movement. The hollow-shaft rotor is supported on the motor housing, at the end thereof closed by a end wall, such as to rotate, by means of a central bearing spigot projecting axially from the end wall.

Abstract: An injection unit for an injection molding machine includes a barrel and a plasticizing screw received in the barrel. An electromotive rotary drive causes the plasticizing screw to rotate and is supported for joint movement with the plasticizing screw in relation to the barrel in direction of an injection stroke. The plasticizing screw and the rotary drive are moved by an electromechanical injection stroke drive to execute the injection stroke. A linear guide is connected to a machine bed for guiding a longitudinal movement of the injection stroke drive and the plasticizing screw. Misalignment of the coaxial disposition of the plasticizing screw, the rotary drive and the injection stroke drive is eliminated by providing a housing shell which is torsionally stiff and moveably accommodates the rotary drive, wherein the plasticizing barrel and the injection stroke drive are connected by the housing shell in a tension-proof manner and supported via the housing shell on the linear guide for longitudinal movement.

Abstract: An actuating drive for a plasticizing unit of an injection molding machine is disclosed. The actuating drive includes a spindle drive with an electric motor and a control mechanism. An energy storage device is coupled with the spindle drive for force transmission therebetween. The energy storage device is loaded by the spindle drive in a return stroke phase and is unloaded in a forward feed phase, boosting the power of an electric motor. The actuator drive can be used, for example, for pulsating actuation of a mold ejector of the injection molding machine, significantly reducing the electrical energy consumption compared to conventional drives.

Abstract: An injection molding machine includes an actuating drive in form of an electromotive spindle drive and an energy storage device associated with the spindle drive. The energy storage device stores kinetic energy and can include two counteracting compression spring assemblies. The energy storage device is hereby loaded, as the spindle drive moves to a first end position, and unloaded, as the spindle drive moves in opposite direction to a second end position, wherein unloading of the energy storage device is accompanied by a power boost of the electric motor, and wherein the first force is equal to the second force at an equilibrium location distal from the end positions of the spindle drive.

Abstract: An injection molding device with an injection molding cylinder in which is arranged a coaxial worn that is rotatable and axially displaceable by drive devices. A spindle nut rotatable by a first drive device is mounted in a housing and cooperates with a screw sleeve which is axially displaceable during rotation of the spindle nut but is fixed against rotation during axial displacement. Further, a shaft is mounted in the interior of the screw sleeve and is connected at one end to the worm and has at the other end an axial coupling, one of whose coupling parts communicates with a second drive device.

Abstract: A process and an apparatus for continuous casting of metallic materials in a semi-solid state is disclosed. A solid metallic material is processed by heating the material in a first container with an inductive heater to a temperature above the solidus temperature. The processed metallic material is then transported to a storage container, from there to an injection unit and subsequently to a casting tool.

Abstract: A clamping mechanism for a clamping unit of an injection molding machine includes a drive unit which moves a first platen linearly relative to a fixed second platen and is linked to the first platen for limited movement. A force-application unit builds up a clamping force, when the first platen assumes a closing position. Disposed between the force application unit and the first platen is a locking device which transmits the clamping force and includes a screw mechanism which operates in synchronism with the drive unit and has a screw shaft and a locking nut constructed to normally connect with clearance to the screw shaft via a thread connection and to interact with the screw shaft for transmitting a load, when the clamping force is applied, whereby the threaded connection is forced to self-lock to secure the locking nut on the screw shaft and prevent reverse rotation of the locking nut.

Abstract: A backflow prevention device for a plasticizing and injection screw axially movable in a plasticizing cylinder of an injection molding machine, includes a base body having a leading head portion and a trailing neck portion and formed with a channel for passage of plastic melt by the screw to an anterior screw space, whereby a check valve is disposed in the channel. Bearing against an inner wall of the plasticizing cylinder and axially moving between open and closed positions is a locking ring so positioned behind the head portion in the area of the neck portion as to define a gap with the base body.

Abstract: A machine for making formed articles of plastic or rubber, such as an injection molding machine, extruder or blow molding machine, includes a machine control, and a plurality of electric components which are operatively connected through wireless communication to the machine control. The machine control as well as the electric components have each devices for transmitting and receiving electromagnetic waves.

Abstract: A foaming agent charging and mixing device comprises at least one mixing means and one foaming agent metering means, wherein the foaming agent charging and mixing device may be arranged between an plasticating screw and a mold.

Abstract: A pressure measuring device for an injection molding machine, includes a stroke drive mechanism operatively connected to a plasticizing unit of an injection molding machine, a force transmission member elastically deforming in response to an axial force and having one side facing the drive mechanism and another side facing the plasticizing unit. Each side of the force transmission member has at least two elevated supports, wherein the supports on one side are positioned in offset relationship to the supports of the other side. A sensor element is provided to measure a bending deformation of the force transmission member in a peripheral area thereof between two supports of the force transmission member for determining the injection pressure.

Abstract: Apparatus for casting metallic materials, includes a processing device for preparing metallic material in free-flowing form and a storage container in communication with the processing device for receiving a continuous flow of prepared metallic material. An injection unit including a piston and cylinder arrangement is arranged separately from and connected to the storage container by a flow connection which includes a flow regulating device to control a flow therethrough. The storage container and the piston and cylinder arrangement are heated separately by a heating assembly, thereby ensuring short cycle times and establishment of great variability during a casting operation.

Abstract: The invention relates to a plasticizing unit in injection-moulding machines, in particular for processing thermoplastics, with a plasticizing cylinder in which a rotatable and axially displaceable screw is arranged, at the head of which a non-return valve is provided, which has an axially displaceable barrier sleeve which encloses with radial play a tapered region which belongs to a basic body fixed in the screw head and is present between blades and a stop ring. The basic body has at least three blades, in that supporting elements provided on the surfaces of the blades facing the barrier sleeve, wherein at least the supporting surfaces of the supporting elements are made of a hard-wearing material.

Abstract: A mold closing unit for an injection molding machine or press; includes a drive mechanism, and a toggle mechanism having a first pair of linkages which are connected to one another at a first knuckle point. One linkage is connected to a stationary component at a second knuckle point and the other linkage is connected to a movable mold mounting plate at a third knuckle point. At least one of the linkages is operatively connected to the drive mechanism at a fourth knuckle point, wherein the fourth knuckle point is spaced from the first knuckle point by a first distance, and spaced from the second knuckle point by a second distance, wherein a sum of the first and second distances is greater than 1.2 times a distance between the first and second knuckle points.

Abstract: An injection assembly for an injection molding machine, with a continuously operating plasticizing unit, includes a piston-type injection unit and an arrangement for intermediate storage and discharge of melt. Several melt reservoirs with melt inlet openings are provided between the plasticizing unit and the piston-type injection unit. Melt lines that connect the melt reservoirs with each other and with the plasticizing unit extend to the melt inlet openings. The melt reservoirs include actuatable work pistons for discharging the melt, wherein the work pistons can open and close the melt inlet openings in the melt reservoirs to divert the melt flow. The disclosed injection unit increases the total volume of bufferable melt and allows individual and separate adjustment of the reservoir volumes and the discharge velocity of the individual melt reservoirs. In addition, switching valves can be eliminated since the melt flow is switched by the work pistons.