RING/TRAVELER SYSTEM FOR RING SPINNING MACHINE
FIG1C is a schematic perspective view showing a relationship between the traveler and the ring during spinning in this example configuration of a ring/traveler system for a ring spinning machine
As shown in FIG1C, when yarn is wound onto a bobbin in the ring spinning machine, yarn Y is passed through the traveler 12. The yarn Y is fed from a drafting device, not shown in the figures, and wound onto a bobbin (not shown) via the traveler 12. At this time, a predetermined tension is applied to the yarn Y passing through the traveler 12. Accordingly, the traveler 12 is pulled by the yarn Y so as to contact the flange 11a of the ring 11, and while maintaining this state of contact, moves so as to revolve around the flange 11a. Therefore, while the yarn Y is being wound onto the bobbin, or in other words during spinning, the traveler 12 slides (travels) around the ring 11.
schematic perspective view
12
traveler
10
not less than
11
ring rings
13
chromium plating layer
['1. A ring/traveler system for a ring spinning machine in which sliding is performed in an environment without liquid lubrication, wherein a plurality of dimples (15), each having a circular open end (15a), are formed in a sliding surface (14) on which a traveler (12) and a ring (11) slide as the traveler (12) travels, and the plurality of dimples (15) satisfy a condition according to which a dimple wall surface angle (θ) is not less than 10° and not more than 65° and satisfy a condition according to which a value of P/D, where P is a pitch (µm) at which the plurality of dimples (15) are arranged over the sliding surface (14) and D is a diameter (µm) of the circular open end (15a), is not less than 1.9 and not more than 4.']