Method and apparatus for producing sealing washers

Details Method and apparatus for producing sealing washers Method and apparatus for producing sealing washers

1974-03-08

1976-03-09

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Preform severing means

Serially arranged with preform reshaping means

72417, 264 85, B29C 1702, B29C 1714, B29C 2400

Patent

active

039429318

ABSTRACT:
A machine for producing tubular fastener sealing members having rolled ends includes an apertured guide member cutting block backed by a pair of clamp members and which feeds tubular stock of resilient material between the clamp members through the guide block. A rotating knife is associated with the guide block and an axially reciprocating rotating shaft supports an edge rolling tool confronting and coaxial with the guide aperture. The components are motivated and sequenced to open the clamp until the tube is advanced to the tool, close the clamp, advance the tool to roll the tube leading edge, open the clamp and retract the tool which is followed by the tube, close the clamp, further retract the tool, and slice the finished product from the tube stock.

REFERENCES:
patent: 2849066 (1958-08-01), Michelet et al.
patent: R25131 (1962-03-01), Wilson

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