Device and a process for welding plastics profiles
AssigneeUrban GmbH & Co. Maschinenbau KB
InventorWolfgang Tesch
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Abstract
The invention deals with a device for welding plastic profiles comprising at least two carriages for holding plastic profiles, stoppers for adjustment, stoppers for welding and at least one heating element. The invention is characterised by the fact that the motion of the plastic profiles can be controlled by means of the device during the welding in such a way that optionally at least two plastic profiles which have to connected with each other move against each other or one plastic profile stops and the other moves toward it.
Claims12
A device for welding plastics profiles that are cut into a miter and are to be welded to one another at a welding face located on said miter cuts, said device comprising at least two moveable carriages to which respective profiles can be mounted and the position of the said carriages may, where appropriate, be fixed, said device being adapted such that the movement of the carriges is controllable by the device during the welding such that optionally at least two plastics profiles (9) to be connected may be moved toward one another or one plastics profile is stationary and the other plastics profile is moved toward it.
A process for making frames comprising plastics profiles cut into a miter by adjusting at least two plastics profiles and heating up the welding face formed from the miter faces by means of a heating element with simultaneous movement of the plastics profiles in the direction of the heating element in a direction of movement of 45° in relation to the welding face and subsequent moving away of the heating element, said process further comprising:
- performing a short opening stroke (A) at the beginning of joining in a direction of movement of 45° away from the welding face to cancel out the amount of difference between the miter faces of the welded connection,
- subsequently simultaneously a short closing stroke (B) and a controlled movement of said plastics profiles toward one another in a direction of movement of 45° in relation to said welding face such that there is no movement of the welded connection in a direction parallel of said miter faces.
Dependencies are inferred from the claim text.