| 摘要 |
<p>1466592 Stapling fibres NEUMUNSTERSCHE MASCHINENUND APPARATEBAU GmbH 12 July 1974 [30 Aug 1973] 31099/74 Heading D1F A fibre-stapling machine comprises a roller cage and an encircling cutter head which are relatively rotatable about a common axis and between the peripheral rollers and inwardly directed knife-edges of which a filamentary tow is fed from the interior of the cage is pressed and cut. An endless conveyor may envelope the cage and be drawn inwardly between two rollers to form an inner loop travelling over guide rollers and encircling the means for introducing the tow. Cut fibres may be removed through the machine casing centrifugally or pneumatically by suction. The machine shown comprises a stationary cutter head formed by opposed circular plate 1 and ring 2 carrying knives 5 slidably seated at their ends in equiangularly spaced radial slots and clamped between annular, angle-section fittings 3 and 4. A roller cage 11, mounted on the shaft 7 of electric motor 8, is formed by a face-plate 10 and ring 12 which are connected by a spacing cylinder 13 with a longitudinal gap 14 and carry at their peripheries the ends of axles 15 and 16 of freely rotatable rollers 17 and 18. Inside cage 11 a hub 9 carries an eyelet 19, through which the tow is guided, and an endless band 22 which is guided by rollers 18, 20, 21, to include a tensioned loop. Wave-form cam edges 24 and 25 engage opposite ends of successive knives to impart antiphase reciprocation of adjoining knives. In a stapling operation, the tow of filaments 34 is first pulled manually into the cage, threaded through eyelet 19 and the gap 14 and is secured at 35. As the cage rotates, the tow winds in layers on the band 22 with rollers 17, 18, rolling on the inside thereof, until the knife-edges engage the outermost layer and cutting proceeds. In a modified machine Fig. 3 (not shown) the cutter-head (to which the leading end of the tow is secured) rotates about a stationary cage 11 and the tow is layered from the inside outwardly. In a tow feeder 31, a continuously variable transmission (not shown) allows the cage or head to gain slightly on the feed rollers 32.</p> |
