B - Operations – Transporting – 29 – C
Patent
B - Operations, Transporting
29
C
B29C 65/02 (2006.01) B23K 37/04 (2006.01) B29C 65/00 (2006.01) B29C 65/20 (2006.01) B29C 65/22 (2006.01)
Patent
CA 2324141
Apparatus for welding together mating surfaces of two thermoplastic parts which have non-planar shapes, and which may have different melting temperatures. The apparatus comprises supports holding a series of parallel shafts with hydraulic cylinders for adjusting the axial position of the shafts. A heating block is fixed to the end of each shaft, and a metal strip has locations spaced along its length which are each attached to one of the heating blocks. The strip has a non- planar shape suitable for making surface contact with the non- planar surface, the strip being detachable from the heating block and being replaceable with another strip having different shape characteristics. The metal strip has a flexibility which allows it to be bent into a non-planar shape suitable for making surface contact with a non-planar surface by movement of the shafts by the hydraulic cylinders.
Bondok Ali Abdel-Khalek
Swann Julian B.
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