Device for pressing plastics
AssigneeTelefonaktiebolaget LM Ericsson
InventorKarl-Erik Leeb
Life of this patent
Estimating the term…
Abstract
An apparatus for pressing plastics that includes a press tool which is adapted to be pressed against a press surface with the aid of pressure means. The press surface includes a flat surface which is common to a thermostat-controlled cold device and a thermostat-controlled hot device. The tool can be moved from one thermostat-controlled device to the other thermostat-controlled device while pressure is being applied to vary the temperature of the tool.
Claims15
An apparatus for pressing plastic, comprising:
- a press tool carried by a tool holder, removable from the tool holder, and adapted to be pressed against a press surface;
- a press surface which is flat and common to both a thermostat-controlled cold device and a thermostat-controlled hot device;
- a press device for pressing the press tool against the press surface;
- means for moving the tool holder carrying the press tool between the thermostat-controlled hot device and the thermostat-controlled cold device along the press surface while the press tool is pressed against the press surface with the press device;
- and
- a temperature of the press tool being changeable by thermal contact with the thermostat-controlled hot and cold devices.
An apparatus for pressing plastic material, comprising:
- a press tool for carrying a plastic material:
- a tool holder holding the press tool;
- a hot device for raising a temperature of the plastic material carried by the press tool;
- a cold device for lowering the temperature of the plastic material carried by the press tool;
- a press surface against which the press tool carrying the plastic material is to be pressed, the press surface being common to both the cold device and the hot device;
- and
- a means operatively associated with the press tool for pressing the press tool held by the tool holder against the press surface and for moving the tool holder between the hot device and the cold device wherein the press tool is moved along the press surface to effect raising and lowering of the temperature of the plastic material carried by the press tool.
A method of pressing plastic material comprising the steps of:
- carrying a plastic material with a press tool;
- holding the press tool with a tool holder;
- pressing the press tool held by the tool holder against a press surface common to a hot device and a cold device thereby pressing the plastic material;
- moving the tool holder holding the press tool between the hot device and the cold device along the press surface while the press tool is pressed against the press surface, thereby heating and cooling the plastic material during the pressing thereof;
- and
- removing the press tool carrying the plastic material from the tool holder.
An apparatus for pressing plastic material, comprising:
- a press tool carried by a tool holder, the press tool for carrying a plastic material;
- a hot device for raising a temperature of the plastic material carried by the press tool;
- a cold device for lowering the temperature of the plastic material carried by the press tool;
- a press surface against which the press tool carrying the plastic material is to be pressed, the press surface being common to both the cold device and the hot device;
- a device for pressing the press tool against the press surface;
- and
- a piston for moving the press tool carried by the tool holder between the hot device and the cold device along the press surface while the press tool is pressed against the press surface.
Dependencies are inferred from the claim text.