Klockner Ferromatik Desma Gmbh

Kloeckner Ferromatik Des Gmbh

Lothar Gutjahr

Wolfgang Nesch

An injection mold unit is provided for an alternate feed, injection molding of parts of a plasticized material and has first and second plasticizing and injection devices, with a respective bores and a mold comprising a heating channel block and a mold cavity. The heating channel has a first passageway connected to the bore of the first plasticizing and injection device, the first passageway having first and second branches in fluid communication with the mold cavity. The heating channel also has as well as a second passageway connected to the bore of the second plasticizing and injection machine and having first and second branches in fluid communication with the mold cavity. One way valves are located in each of the first and second branches of the first and second passageways. The one way valves respectively located in the first branches of the first and second passageways control a flow of plasticized material in a first direction from one of the plasticizing and injection devices, through the mold cavity, and to the other plasticizing and injection device. The one way valves respectively located in the second branches of the first and second passageways controlling a flow of plasticized material in a second direction from the other plasticizing device, through the mold cavity, and to the one plasticizing and injection device, whereby plasticized material is alternately fed to and through the mold cavity.

Mold for injection molded parts made of plasticizable material

A method and device for directing and controlling the operation of an injection molding machine having sensors which provide actual values during machine operation, the machine having actuators forming and executing control orders received from the sensors. The sensors and actuators are serially connected via a closed loop control cable such that all information is available in successive words. The sensors and/or actuators deliver their information jointly and in dependence on the status of the program. The actuators jointly execute their control orders in corresponding numbers. The actuators and sensors are coupled through interface couplers to the closed loop or stub cable.

Method and device for directing and controlling the operation of an

A process and apparatus for injection molding of injection molded parts of plasticized material, in particular plasticized liquid crystal polymers, in which the plasticized material is injected into the mold cavity of a closed injection mold having at least two spaced apart infeed gates, separate plastification and injection devices being associated with each of the gates. The plasticized material may be further injected into the mold cavity to compensate for any shrinkage during cooling of the molded material. Injection is carried out by at least one of the devices which causes the material to flow into the cavity via one of the gates associated therewith for filling the cavity and causing the material to partially flow from the cavity via the other of the gates in the direction of the other of the devices associated therewith.

Process for injection molding of injection molded parts of plasticized

A plastification cylinder of an injection molding machine includes an outside cylinder and an inside cylinder, the inside cylinder including heating elements and temperature sensors therearound and defining a screw antechamber at one end thereof, the outside cylinder being shaped so that the end thereof which surrounds the end of the inside cylinder that defines the screw antechamber is in a pressure fit contact with the inside cylinder while the other end of the outside cylinder is spaced away from the corresponding end of the inside cylinder, thereby providing an annular chamber therebetween. Connecting elements extending through the outside cylinder can be used to cause a fluid heating or cooling medium to flow through the annular chamber.

Growing community of inventors

Malterdingen, Germany

Lothar Gutjahr