Patent GB-918979-A (GB)
Title: Improvements in or relating to automatic thread winding machines
IPC: B65H54/22
Filed: 1959-03-10
Abstract: 918,979. Winding yarns. REINERS, W. March 10, 1959 [March 10, 1958], No. 821859. Class 120 (2). An automatic thread winding machine of the kind having a plurality of winding stations and a fault-eliminating device which is movable relative to the stations so as to locate each station in turn opposite the device, means to arrest the movement of the device on the detection of a fault at a winding station, means at each station to feed full cops to a supply position, and other means at each station to find and tie the thread ends together under the control of said device, is characterized in that the cop feed means is located at least substantially to the front of the machine and in front of the path of the thread leaving the supply position, and the path of movement of the fault-eliminating device is to the rear of said thread path. As shown the cop supply means comprises a shoot 40 and a magazine 39 from which cops are supplied one at a time to position K. The tender 13 which carries the faulteliminating means is supported for travel past the winding stations by means of a pair of rollers 12a, 12b which run on the intermediate horizontal tubular member 3 and at its lower end is guided on the tubular member 4. The tender can be swung rearwardly on the member 4 after removing roller 12a and can then be lifted out for servicing. The winding machine comprises uprights 1 interconnected by tubular members 2, 3 and 4. At each winding station there is a downwardly arcuate bracket 5 bolted at 19 to the member 2. At the lower end of each bracket 5 there is secured an inclined tube 6 supported at its lower end by an angle bracket 7 bolted to member 3. Adjacent the lower ends of brackets 6 is a shaft 8 which is continuously oscillated. A drive 9 secured to shaft 8 is connected by a tension spring 10 to a lever 11 rotatably mounted on shaft 8. Supported above the brackets 5 is a continuously driven shaft 15 on which a friction roller 1b is secured at each winding station. A similar shaft 17 carrying friction rollers 18 extends beneath brackets 5 and is continuously driven in the opposite direction to shaft 15. Each bracket 5 has pivotally mounted thereon a spool frame 20 for supporting package 21 being wound, the package resting on traverse drum 22 on shaft 22a journalled in bracket 5. Shaft 22a is driven through friction roller 25 by either of rollers 16, 18; the roller 25 being mounted on arm 24 connected to a three-armed lever 23. Shaft 22a is axially slidable in bracket 5 and is carried by fork 28 pivoted or spindle 27. Below drum 22 is a control lever 31 pivoted at 32 and having a notch 36 engageable by the nose 35 of a trip pawl 33. A feeler lever 37 engageable with thread F is pivoted at the lower end of bracket 5. The thread F is drawn from a supply cop K supported on a holder 38 on tube 6, around the traverse drum 22 and on to package 21. To the upper end of lever 31 is articulated a rod 41 the other end of which is connected to a second arm of lever 23. Below rod 41 is a second rod 42 connected to a brake shoe 44. At the lower end of lever 31 is pivoted a two-armed lever, one arm 45 of which is connected to a rod 46 and the other arm 47 co-operates with a tail 37a of member 37. Arm 47 is coupled through a link system 30 to fork 28. Journalled on tender 13 is an arm 52 connected to a latch lever 54 which co-operates with a notched disc 66 of a faulteliminating mechanism 55 carried by the tender. In operation, with winding proceeding normally the rod 46 is moved up and down continuously by oscillating shaft 8 so that lever 45, 47 is correspondingly oscillated and the fork 28 is rocked to effect axial reciprocating movement of traverse drum 22. If thread F should break lever 37 will swing to the chain line position indicated such that tail 37a lies in the path of hook 48 on arm 47 so that as the latter moves it strikes tail 37a and will be cammed towards the right so that lever 31 is rocked about pivot 32 until nose 35 of pawl 33 disengages from notch 36. The pawl is then swung in a clockwise direction by spring 34 to a position which retains lever 31 in its deflected position. The movement of lever 31 causes brake shoe 44 to engage drum 22 and through rod 41 disengages roller 25 from roller 16 thus stopping rotation of traverse drum 22 and package 21. The movement of pawl 33 also projects the head 51 of rod 50 until the projection 51a is located in the path of arm 52 on the tender. As the tender reaches the winding station lever arm 52 is rocked and this movement is transmitted to latch lever 54 which is drawn downwards and moves rod 14a towards the bearer 3 and into socket 14b when it is aligned therewith. The lever 54 is thus disengaged from disc 66 which allows shaft 56 to rotate. Cam 57 rocks lever 58 so that rod 59 engages lever 23 and rocks it to move friction roller 25 into engagement with the reverse drive roller 18 so that the thread end is unwound from package 21 ready to be collected and presented to a knot tying device together with the end from supply cop K. On completion of the knot tying operation cam 60 rocks lever 61 to move rod 62 into engagement with tail 37a of lever 37 to return the latter to its full line position. Finally cam 63 rocks lever 64 to move rod 65 towards the left into engagement with head 51 of rod 50 thus returning pawl 33 to the position shown and permitting lever 31 also to return so as to disengage the brake 44 and move the roller 25 out of contact with roller 18 and into contact with roller 16 so that winding recommences hatch lever 54 reengages disc 66 to arrest shaft 56 and withdraw rod 14a so that the tender 13 can continue along the machine. The tail 37a of lever 37 and the end of lever arm 47 are preferably arranged such that under normal operating conditions a continuous oscillatory movement is imparted to the control lever 31 so that friction roller 25 is briefly disengaged from the driving roller 16. This produces a short interruption in the drive to thread F but is not sufficient to release the pawl 33.