| 摘要 |
The invention contemplates an improved structure and method for building breakers or belts for vehicle tires, through precise pre-cutting of ply strips from web material and precise transfer to a breaker-building drum. Pre-cutting to length is accomplished by a ply-preparation device which includes a continuous and endless surface for supporting the lead strip in transiently adhered relation to said surface, plus means for the precise indexing displacement of the strip-laden surface to measure the predetermined ply length to be severed upon cut-off. Means are disclosed for the stress-free transfer of the severed ply strip and for the automatic recycled measurement and cut-off of the next ply strip. Means are also disclosed for the interlaced delivery of such plies from successive different stations to accomplish desired multiple-ply building of a particular breaker on the same drum, and for tread-application as part of the same machine cycle.
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