Process and apparatus for deburring moulded parts produced...

Details Process and apparatus for deburring moulded parts produced... Process and apparatus for deburring moulded parts produced...

B - Operations, Transporting

29

C

18/1207

B29C 71/00 (2006.01) B23D 79/00 (2006.01) B27N 3/20 (2006.01) B29C 33/40 (2006.01)

Patent

CA 1190716

ABSTRACT OF THE DISCLOSURE The process and the apparatus for deburring moulded parts produced by pressing especially moulded parts of ligno- cellulose fibre mats. A small circumferential zone of the fibre mat between the edge contour of the moulded part to be deburred and the edge of the waste shoulder is thermally decom- posed during pressing. In the decomposition zone the thermally decomposed portion of the fibre mat is removed from the edge contour of the moulded part or removing the moulded part from the press tools. The decomposition zone is limited by a cir- cumferential groove shaped chamber provided in one of the press tools. The portion of the fibre mat enclosed in the chamber is substantially uncompressed and the chamber is provided with means which can be of various types for the thermal decomposition. The means causes carbonization of the material of the decomposi- tion zone which facilitates the removal of the waste shoulder from the moulded part so that additional hand treatment is unnecessary.

394680

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