Pre-Stretcher Assembly and Thermoforming Device

摘要

The present invention relates to a pre-stretcher assembly and a thermoforming device. The invention makes use of conical screw thread in combination with a stop so as to obtain a coupling system which can be coupled more quickly, results in a constant coupling and is less susceptible to wear. This makes the invention particularly advantageous for assemblable mould parts having a product-forming function, such as a pre-tensioner.