GB1204907A - Improvements in or relating to combers for combing a textile fibre lap - Google Patents

Abstract

1,204,907. Driving mechanisms for textile combers. MAREMONT CORP. 9 Oct., 1967 [10 Oct., 1966), No. 46146/67. Heading D1N. The detaching roll 14, of a rectilinear fibre lap comber is driven through drive means by the main shaft 12 of the comber which also drives the nipper mechanism with an oscillatory movement, the detaching roll drive means including adjusting means adjustable during operation of the comber for varying the timing of the rotation of the detaching roll in advancing and reversing directions. Roll 15 is mounted for adjustable movement around the circumference of roll 14 for varying the distance between the nip of the nipper mechanism and the nip of the detaching rolls 14, 15. A main drive motor 100 drives shaft 18 through gears 102, 104, shaft 18 driving head shaft 12 for rocking movement by an eccentric drive including a slide 110 and a slide rod connected to shaft 12 by clamp 114. The amplitude of the stroke of the slide rod may be varied by setting indicia on the disc and on an indicia plate of a crank pin 120 to a selected number. The detaching rolls 14, 16 are driven by gears 82, 84 and their common gears 86, 88 by sun shaft 132 of a detaching motion planetary gear mechanism 130, the ring gear 134 of which is driven at constant advancing speed and the ring gear 134 of which is driven at constant advancing speed and the planet cage 136 of which is oscillated. The advancing speed drive is trans mitted by a gear 138 on shaft 140 which is driven through a variable speed ratio drive 142, having manual control 144, from shaft 18 through gears 148, 152 and timing planetary gear 150. The reciprocating motion is provided by cam operation of a gear sector 160 reciprocated by cam shaft of planetary gear 150. Gear 150 has its planetary cage driven by gear 148 and has the rotational position of its ring gear controlled by manually adjustable gear 158. The gear cage 136 is also provided with a resilient restraint by means of a surface thereon having a follower 178 attached to an arm of a torque tube spring 180 connected at its other end to machine frame through torsion bar 181. Nipper mechanism: The nipper mechanism which comprises a cushion plate 30, a nipper knife 50 and a upper comb 70 is rigidly connected by brackets 32, 34 to shaft 12 which oscillates the mechanism above a comb 20 in an arcuate path towards and away from the detaching rollers 14, 15. During the first half of the forward movement the knife remains resiliently pressed against the front edge of the plate 30. The nipper mechanism also drives a feed roll 40 mounted in a recess of plate 30 by ratchet wheels 46 and a pawl 47. The mechanism also includes a bar 80 which extends between upper brackets 34 for movement therewith in a forward and backward direction opposite to that of plate 30 to take up slack in the lap.