Rieter

Description of functions of the Rieter E 66 comber

Index

Fig. 37 – Cross-section through the Rieter E 65 comber

The lap (Fig. 37, 2) rests on two support rolls (3), on which it unrolls slowly. Lap (1) is a reserve lap. On its way into the  nippers the web passes over an eccentric shaft (4) acting as a diverter. This serves to keep web tension constant during the forward and return movements of the nippers. Forward movement of the web into the nippers is performed by  feed roller (5) and is carried out in very small steps (around 5 mm). When feed has been completed, the nippers are closed by allowing spring (8) to press nipper plate (7) against the cushion plate. During the return swing of the nippers, caused by the oscillation of nipper shaft (13), the nipped web is presented to combing segment (10) mounted on rotating cylinder (11) and is combed out. The nippers swing forward again to enable the tuft to be detached from the fiber fringe by rotating detaching rollers (14), which are mounted as a stationary unit. Since the trailing part of the fiber fringe is clamped inside the nippers, so that no combing can be carried out in this zone, the rear end of the fiber fringe has to be combed through by another device, the needles or teeth of  top comb (9), in order to complete the combing operation.

The web created by piecing at detaching rollers (14) now passes to a web plate (15) and then via lead-off rollers (16) to a trumpet (17), forming a sliver. Thereafter, table rollers (18) guide the sliver formed in this way to the transverse table, on which all eight slivers are combined and delivered together into a drafting arrangement. After the material has been drawn out in this device to a single sliver, it is coiled in a can. A brush (19) keeps the  circular comb clean. The following sections provide details of various operations.