GB892614A - Improvements in or relating to winding machines - Google Patents

Abstract

892,614. Winding yarns. REINERS, W. April 15, 1958 [April 15, 1957; April 18, 1957], No. 11931/58. Class 120(2) An automatic thread winding machine has a plurality of winding stations, means by which different kinds of faults at the winding stations are eliminated, means to produce relative movement of the winding stations and the fault eliminating means thereby to locate each winding station in turn in the zone of operation of the fault eliminating means, means to retard or arrest said relative movement on detection of a fault at a winding station, and means to reverse the direction of said relative movement at predetermined points of said movement. In the embodiment shown, uprights 1 and 2 are connected by a tubular bearer 4 and between said uprights there are arranged winding stations 3 past which travels a tender 5 carrying devices by which faults in the winding operations are automatically eliminated. A motor 6 drives chains 8 and 9, chain 8 driving the tender and chain 9 driving the mechanism on the tender. A fan 10 generates a suction in the central bearer 4. The tender 5 runs on the central bearer 4 by means of rollers 24 and further rollers 24a guide the tender on the lower bearer 20. The tender 5 includes a suction pipe 52 one end of which is brought opposite ports 50 in the central bearer 4 successively and in each case a cover 49 (not shown) is swung aside thus putting the pipe 52 into communication with the suction in tube 4. The chain 8 has an entrainment pin 54 which engages in a slot 56 in the tender 5 but since the tender has to be stopped or slowed down when necessary a slipping clutch 55 is interposed in the drive to the chain. Chain 9 drives a reduction gear 57 connected by a chain 58 to a chain wheel 59 which is coupled to shaft 61 through a slipping clutch 60. Shaft 61 carries a worm 62 meshing with a worm wheel secured to disc 32 which controls the fault eliminating devices. In operation the tender travels from winding station to winding station feeling by means of control lever 25 whether the feeler member 17 has been caused to move to the full line position by the absence of thread. If it has, arm 19 of the two armed lever 18, 19 is moved into the path of control lever 25 and the latter is caused to swing and rotate shaft 27. This rotates crank 28 causing the latch 30 to move the rod 31 downwardly to engage a socket 51 and thus stop the tender at the appropriate winding station. The movement of latch 30 also disengages notched disc 34 and shaft 61 which had been previously held against rotation by the effect of said latch lever now transmits the drive from chain 9 to control disc 32. The lever 36 enters the dwell 33 in disc 32 entraining the toothed plate 37 and causing the suction pipe 39 mounted on toothed wheel 38 to pick up the free thread end of the bobbin 13, which is rotated backwards, and transfer it to the knot-tying mechanism 41. Simultaneously the arm 46 is moved to engage the thread end coming from the supply bobbin 14 and bring it also to the knot tying mechanism. The control disc 32 meanwhile has turned such that its hump 35 presses against projection 43 of control lever 42 and through rod 45 and lever 18 resets the feeler member 17. Immediately after this the latch 30 enters groove 34 thus releasing the rod 31 from socket 51 and the tender resumes its motion along the machine. Alternatively instead of the tender being positively stopped it may be only slowed down by the application of brake means. When the tender reaches the end of its travel in one direction the pin 54 on chain 8 moves to the other run of the chain and the tender is thus reversed. The tender may be operable in both directions of its travel or it may be operable only in one direction, the reverse movement being made more rapidly. In a second embodiment the tender is driven by an electric motor mounted on the tender with a suitable reversing switch for changing the direction of movement at the end of its motion. Fixed to the lever 36 are two Bowden cables 66, 65 which depending on the movement of lever 36 press against lever arm 71 or pull on lever arm 72 to operate mechanism for stripping an empty cop tube from pin 67. This operation only takes place if a feeler in contact with the supply cop indicates that it is exhausted. The bobbin stripping mechanism may incorporate further brake means to further slow down or arrest the travel of the tender. After removal of the exhausted cop a full cop on shoot 15 is fitted on pin 6, 7 and the end of the new cop is secured to the end of the thread on the package. In a further embodiment a number of tenders operate over different sections of the machine and reversing means are provided at the end of each section. Alternatively the sections may overlap and the tenders provided with reversing means should they approach one another on a common section.