B - Operations – Transporting – 02 – C
Patent
B - Operations, Transporting
02
C
18/1167, 51/147,
B02C 18/08 (2006.01) B29B 17/00 (2006.01)
Patent
CA 1102291
ABSTRACT OF THE DISCLOSURE A method for producing moulded parts from flakes of toughly resilient material especially rubber, reduced to the form of granules and to moulded parts made according to the method. Upon replacement of worn-out automobile tires or upon retreading such tires, scrap rubber is obtained which is normally of no use, and is frequently dumped or burned. This is particularly undesirable today in view of the emphasis being placed on environmental protection, as well as the in- creasing costs of raw material. Attempts to utilize such scrap rubber have encountered problems, particularly when attempting to reduce the scrap rubber to a size which will make it possible to obtain a homogeneous mixture for further processing. The present invention proposes a simple and relatively inexpensive method, and an apparatus for carrying out the method, by which flakes of rubber, especially scrap rubber, are comminuted to a readily usable size. The device comprises a housing having a feed aperture, and having a drive shaft mounted therein. A feed disc is rotatably mounted on the shaft at a location spaced from the feed aperture, the feed disc adapted to feed the flakes to a first of at least one cutting disc rotatably mounted on the shaft. Apertures are provided in the cutting disc to permit passage of material there-through, edges of the apertures also providing cutting edges. The cutting edges of the cutting disc cooperate with a respective perforated disc mounted in the housing adjacent to the cutting disc to comminute the material. The housing is provided with means for supplying pressurized fluid to the housing so as to pre- vent clogging of the material therein, and discharge means are secured to the housing downstream of the last perforated disc to permit removal of pressurized fluid from the housing. The perforated discs have openings therein to permit passage of the comminuted material therethrough.
252324
Ruf Herbert
Swabey Ogilvy Renault
LandOfFree
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