Segmented spacer ring

Details Segmented spacer ring Segmented spacer ring

B - Operations, Transporting

29

C

18/1072

B29C 33/00 (2006.01) B29C 33/30 (2006.01) B29C 51/44 (2006.01)

Patent

CA 1211610

SEGMENTED SPACER RING ABSTRACT Apparatus is disclosed for Making sheet-plastic articles, such as lids for disposable drinking cups, by vacuum forming. The invention provides spacers that fit into the holes in the stripper plate of the apparatus for the purpose of matching the size of the hole closely to that of the die impression. The spacers are flanged and in three segments, the joins between the segments being so arranged that two of the segments can be first placed in the hole, their flanges being entered into a groove in the hole, then the third is located in the hole and manoeuverd radially outwards until its flange too is located in the groove. The segments are retained in place with a spring ring. The segmented spacers can easily be inserted at arm's length and by feel alone. The spacers are themselves radially thin so that the holes in the stripper plate can be packed tightly together.

444228

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