Presses – Reciprocating press construction – Box and piston type
Patent
1997-06-12
1999-02-16
Gerrity, Stephen F.
Presses
Reciprocating press construction
Box and piston type
100179, 100249, B30B 1500, B30B 930
Patent
active
058709517
ABSTRACT:
A improved service life baler press assembly including a number of novel press chamber and ram assembly components formed of a relatively hard material, such as a thermoplastic polymer (e.g., acetal resins) or any other suitable material having low static and dynamic coefficients of friction. Press chamber components according to the invention include press wall liners coupled to the press chamber walls. The press wall liners are manufactured of the thermoplastic polymer, and are disposed between the press walls and a ram head during periods of compression. The low static and dynamic coefficients of friction of the thermoplastic polymer material allow the ram head to move inside of the press chamber without damaging the walls of the press chamber. In addition, one embodiment of the present invention includes a ram head cover also composed of a thermoplastic polymer or other suitable material. The ram head cover reduces wear damage to the press wall liners. The surface area of a traditional ram head can be reduced to accept the ram head cover. The interaction between the various press chamber components reduces the contamination of rubber (or any other compressible material) by preventing metal cuttings from being formed during extended use. The disclosed press wall liners also feature a unique interlocking configuration that prevents rubber from migrating through the junctions of the wall liners.
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CADCO.RTM. DELRIN Advertisement (May 1997).
Gerrity Stephen F.
Karltex Machine Inc.
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