Plastic and nonmetallic article shaping or treating: processes – Mechanical shaping or molding to form or reform shaped article – Forming plural articles
Patent
1990-10-19
1991-12-17
Simmons, David A.
Plastic and nonmetallic article shaping or treating: processes
Mechanical shaping or molding to form or reform shaped article
Forming plural articles
264 39, 264 401, 264163, 264259, 264275, 2642976, 2642977, 264325, 425233, 425236, 425346, 425389, 425411, B28B 500
Patent
active
050733290
ABSTRACT:
Apparatus and method for forming seals, such as composite seals in rubber/metal or other materials, includes supplying a raw elastomeric mixture in the form of a suitably shaped extrusion, and optionally a metal or other material insert, to respective loading and a possibly metal or other material insert are supplied to respective loading stations of a transfer machine; the machine is provided with a plurality of carriers each composed of at least two pivoted leaves joined in book-like fashion and each carrying a respective mould half, respective spring presses movable on the machine together with the said carriers, and cam means for holding the said carriers open at the loading stations; after cleaning of the mould halves and spraying of the upper mould half with a release agent a said insert is deposited between the mould halves by means of manipulators able to self-center themselves with respect to each carrier and then a blank of raw mixture obtained by slicing the extrusion is deposited between the mould halves; finally each carrier is closed in such a way as to bring the mould halves together, disposed clamped under the corresponding spring press and fed into a polymerization tunnel.
REFERENCES:
patent: 1537697 (1919-07-01), Roberts
patent: 1593878 (1924-04-01), Nagel
patent: 3337920 (1967-09-01), Jagger et al.
patent: 3809739 (1969-12-01), Gelin
patent: 3844701 (1974-10-01), Rockwell
Dixon M.
RFT S.p.A.
Simmons David A.
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