| 摘要 |
The invention discloses a method and a device (10) for welding of strapping (5) made of plastic. The method proceeds with the aid of the apparatus (10) from which at least: a tape guide member (4) which introduces a product group previously laid and optionally tensioned strapping band (5) via its own ends overlapping, a heatable welding tongue (1) between a working position, in which the hot welding tongue (1) projecting between the mutually overlapping ends of the strap (5) to melt this, and a retreat position at which the welding tongue (1) between the two overlapping ends of the strap (5) is pulled out, is movable, a counter-pressure plate (2), and a plunger (3) after retraction of the welding tongue (1); from their working position to their retracted position, the two overlapping ends of the strap (5) to at least a portion of the platen (2) and thereby against each pressed and thus the overlapping ends of the melted strapping band (5) are welded together, includes. The process is distinguished by the fact that the latest and/or at least at the beginning of Umreifungsprozesses at least: a stamped (3) opposite part of the platen (2), and/or one of the platen (2) facing part of the punch (3 ), and/or one of the welding tongue (1), the plunger (3) and the counter-pressure plate (2) facing the area of the tape guide member (4) is preheated. The device (10) is characterized by means (8) at the latest and / or at least at the beginning of Umreifungsprozesses at least: a stamped (3) opposite part of the platen (2), and/or one of the platen (2 a preheat the welding tongue (1), the plunger (3) and the counter-pressure plate (2) facing the area of the tape guide member (4) part facing the punch (3). |
