| 摘要 |
The present invention is related to a pneumatic control ring (1) with application in ring twisting machines, continuous spinning frames, and double twisting frames, made of sintered, porous material and with a chamber (4) in which an air-lubricant mixture is pressure injected, which creates an air cushion between the ring (1) and the thread and produces constant and homogeneous lubrication in the contact area between them, in order to avoid the balloon effect and to prevent the thread from wearing down by friction against a surface which is the balloon control ring, facilitating high speed thread processing.
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