Plastic tooling with compression adjustment

Details Plastic tooling with compression adjustment Plastic tooling with compression adjustment

B - Operations, Transporting

29

C

18/1201

B29C 33/40 (2006.01) B21D 37/20 (2006.01) B29C 33/38 (2006.01) B29C 39/10 (2006.01) B29C 59/02 (2006.01) B29C 70/26 (2006.01) B29C 70/70 (2006.01) C08G 59/18 (2006.01)

Patent

CA 2012135

PLASTIC TOOLING WITH COMPRESSION ADJUSTMENT Abstract of the Disclosure Epoxy tooling which inherently expands and contracts with temperature changes for making parts of metal or plastic has elongated rods extending through guide tubes within the tooling and compression washers or plates on opposite sides thereof. These compression devices for strengthening the tool can be selectively adjusted toward and away from one another using nuts threaded on the rods for varying the compression load on the tooling in accordance with varying tool operating loads, working temperatures and amounts of expansion or contraction. Epoxy tools for molding plastics are heated and expended to a working temperature and then compressively loaded in selected areas prior to molding operations to prevent tool stress cracking or epoxy tools for metal stamping are compressively loaded and supported in selected areas of high tensile stress and operated at room temperatures for high load metal stamping without fracture.

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