摘要:
The apparatus utilizes a mandrel in a substantially ring or cylindrical shape about which is disposed inwardly pressure supplying means, an annular cavity disposed between the mandrel and pressure means, and means for supplying heat to the mandrel to initiate its thermal growth during curing of the belting. The metal of the mandrel has a high coefficient of thermal expansion which during use applies radial outward pressure against the belt body being cured.
摘要:
A tractor belt adapted to be trained over and driven and supported by sprockets in a mechanism for advancing and positioning a strip of material having hole-in-line perforations, the belt comprising a wire-cored band having perforation engaging lugs integral with and projecting from one surface of the band and sprocket engaging lugs integral with and projecting from the opposite surface of the band. A method for making such a belt.
摘要:
An endless power transmission belt and method of making same is provided wherein such belt is adapted to be operated in an endless path and comprises a tension section, a load-carrying section, and a compression section having a plurality of teeth arranged transverse the endless path with each of the teeth having a plurality of parallel randomly dispersed strength members each extending completely across its associated tooth with the randomly dispersed members increasing the transverse rigidity of the belt as well as providing nonsymmetrical patterns for the strength members which tend to prevent the development of shear planes and thereby prevent premature belt failure.
摘要:
A device for taking off annular rubber products from the rings of a drum-type composite former, comprising a mechanism to disjoin said composite former into separate rings carrying finished products, said mechanism incorporating a plurality of movable dogs adapted to engage the former rings from inside and provided with a drive to drawn them apart axially with respect to the former, as well as a mechanism to consecutively take off finished products from the separate former rings and a means to consecutively transfer the separate former rings carrying finished products from the dogs of said mechanism to disjoin said composite former into separate rings carrying finished products, towards said mechanism to take off finished products from the separate former rings.
摘要:
Permanent markings are formed on an elastomeric toothed belt for alignment of the drive system in which the belt is to be used by the application of strips of colored elastomeric material transversely across the belt in predetermined relationship with the belt teeth or gaps prior to the curing of the belt. The colored material enters into a firm bond with the elastomer of the belt upon curing.
摘要:
A toothed power transmission belt having teeth distributed on two of the surfaces of the belt and a method of manufacturing the belt are disclosed. The belt is composed of a pair of multilayered laminations bonded to each other with a reinforcing filament at least partially embedded in one of the laminations. The belt is manufactured by first covering the exterior surface of a longitudinally grooved mandrel with a skin coating of an elastomeric wear and abrasion resistant material. A highly viscous elastomeric tooth filler compound is then applied so as to fill the grooves in the skin coating corresponding to the grooves in the mandrel and cover the entire surface of the skin coating. A reinforcing filament is wound around the mandrel for approximately one-half the width of the covered portion of the mandrel in such a manner as to become at least partly embedded in the filler compound. The portion of the elastometric materials not having the reinforcing filament encircling it is reversed upon itself and pulled over the reinforcing filament to form the outer toothed surface of the belt. The entire assembly is then cured, stripped from the mandrel and trimmed. If desired, the resulting finished belt slab may be cut into belts of smaller width.
摘要:
An apparatus for molding and vulcanization of annular rubber articles comprising a drum adapted to receive and support thereabout the articles to be treated and a mechanism for external pressing of the articles received about the drum. The mechanism for external pressing of the articles includes individual selectively heatable segments arranged concentrically about the drum and associated with drive means for displacing these segments radially of the apparatus, this drive means including an annular frame pivotally connected through pivoted arms with the segments of the mechanism for external pressing of the articles, the frame being associated with power means for effecting axial reciprocation of the frame along guiding columns.