Verfahren und Vorrichtung zum überlappenden Verschweissen von flächigen Kunststoffmaterialien

摘要

In welding overlapping plastic sheets (15, 16), they are placed on a flat surface, the upper sheet (15) is lifted and a hot shoe (6) is inserted between them. The hot shoe (6) is then moved along the join while a pressure roller (3) presses the sheets against the flat surface. The shoe (6) can move in a vertical direction to ride over any unevenness in or under the lower sheet (16) without losing contact. An independent claim is also included for the following: (1) A welding device that carries a hot shoe (6) and pressure roller (3) with a mechanism (4, 5, 30) that allows a changeover from a stand-by state to a working state and provides adjustable spring-loading (14) of the hot shoe (6) against the lower sheet (16); (2) Use of a guide rail during welding of overlapping plastic sheets to support a driven carriage that carries the welding device.