Engel Austria Gmbh

Engel Maschinenbau Gesellschaft M.b.h.

Franz Dirneder

Robert Strasser

Stephan Eppich

Otto Urbanek

Stefan Eppich

Heinz Leonhartsberger

Friedrich Pernkopf

Florian Porod

Christoph Balka

Friedrich Johann Kilian

Hannes Bernhard

Helmut Wiesinger

Gottfried Hager

Gerhard Hackl-Lehner

Martin Gusenbauer

Gernot Boehm

Werner Kappelmüller

An injection unit for a shaping machine includes an injection element suitable for introducing a plasticized material into a mold tool by a linear movement of the injection element. The injection element is coupled in linear motion-transmitting relationship to a bearing element, and at least two linear drives are adapted to exert a force on the injection element by the bearing element. The force can be transmitted by a transmission element from the at least two linear drives to the bearing element and thus to the injection element, and at least one clearance is arranged between the bearing element and the transmission element such that deformations of the bearing element are not transmitted to the transmission element or are transmitted to a reduced degree.

Injection unit for shaping machine and shaping machine including an injection unit

A plasticizing unit for a molding machine includes a plasticizing cylinder, and the plasticizing cylinder has a feed zone and a filling opening for material to be plasticized. The filling opening is arranged adjacent to the feeding zone, and a thermal separating device is arranged between the feed zone and the filling opening. An active tempering device for the filling opening is provided, and the active tempering device includes at least one tempering conduit and a tempering medium turbulently flowing through the tempering conduit during operation of the active tempering device.

Plasticizing unit including a thermal separating device and an active tempering device

A closing unit of a shaping machine includes a moveable clamping plate, a push rod connected to the moveable clamping plate and having an outside profile, a divided locking nut provided with an inside profile, and a closing force mechanism for acting on the moveable mold clamping plate with a closing force. The push rod is lockable in a closed position of the locking nut by the cooperation of the inside profile and the outside profile with the closing force mechanism. For displacement of the locking nut between an opened and the closed position, a rotary drive is provided for rotation of a shaft, and at least one toothed rack cooperates with the shaft by way of a tooth arrangement and is connected to the locking nut.

Closing unit of a shaping machine

An injection assembly () for a molding machine (), in particular an injection molding machine, comprising an injection piston (), a drive device () for moving the injection piston (), and a force storage means, wherein the force storage means connects the drive device () to the injection piston ().

Injection assembly for a molding machine

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.

Injection molding apparatus

In order to operate the closing means of a double plate injection moulding machine including a fixed and a movable mould plate, the closing means comprising at least one pump (22), at least one high speed cylinder for a high speed stroke and at least one closing cylinder (10) for a closing stroke with a nominal closing force, whereby the closing cylinder (10) includes a double action piston (7) in which both piston faces (13, 14) are the same size and which divides the interior of the closing cylinder (6) into two cylinder sections (8, 9) which are hydraulically connectable via hydraulic lines (21, 22) and a valve (26), the following method is carried out: during the high speed closing operation using the high speed cylinder (3), both sides of the piston (7) of the closing cylinder (10) are pressurized with an equal, high pressure which is as high as or higher than that required to obtain the required nominal closing force, whereby on moving the piston (7) of the closing cylinder (10) in the closing direction (15), the valve (26) allows the pressure between the two cylinder sections (8, 9) to be equalized, and in that the power closing operation is effected by releasing hydraulic oil from the cylinder section (9) of the closing cylinder (10) in which the hydraulic pressure causes a force which acts on the movable mould plate in the direction opposite to the closing direction (15), the valve preventing the pressure between the two cylinder sections (8, 9) from being equalized.

Method of operating the closing means of a double plate injection

Growing community of inventors

Schwertberg, Austria

Franz Dirneder