Patent GB-1460627-A (GB)
Title: Device for placing a cop with its yarn pulled out into a movable storage member
IPC: B65H67/06
Filed: 1974-05-29
Abstract: 1460627 Transferring cops OFFICINE SAVIO SpA 29 May 1974 [30 May 1973] 23827/74 'Heading D1F A device for placing a cop 20 with its yarn 40 pulled out into a compartment 32 of a movable storage member 42 comprises an arm 47 for detecting the presence of a cop 20 in a compartment 32, cam means to pre-arrange an empty compartment 32 for the reception of the cop 20, a fixed suction opening 27 to retain the end of the yarn 40 when located, at least one fork 56 which alternately cooperates with the compartments 32 and compartments 21 of a supply conveyor, a pincers-type device 34 which retains the end of the yarn 40 when located and which is fixed to the top of each compartment 32, and a device 43 for detecting the presence of the end of the yarn 40 and which cooperates with shears 44 for cutting off the excess part of the end of the yarn 40 and with a control device 61 for discharging from the compartment 32 a cop 20 of which the end of the yarn has not been located. The compartments 21, Fig. 1, of the stepby-step cop supply conveyor are protected by a wall 22. A suction opening 23 is provided in a conduit 24 for picking up the yarn end which, when located, is transferred via a slit 25 to the opening 27. Shears 26 are provided. Each compartment 32 has a cover 33 carried by an angle part 31 anchored by a fork 30 on a sliding means 29. The device 34 comprises a fixed jaw 35 and a movable jaw 36 activatable by an arm 37 which, by a pin 38, cooperates with a fixed cam 39, Fig. 2, to open the jaw 36 against spring loading. The device 43, Fig. 1, and the shears 44 form a single unit obtained by modifying the operation of a thread-clearer. A device 58 for switching the track of an empty compartment 32, a track 48 for a full compartment, a track 49 for an empty compartment and a switch 50, activatable by a cylinder 75, for switching a compartment 32 loaded with a cop 20 of which the yarn end has not been found, are provided. When a pin 52, Fig. 11, which guides the compartment 32 passes a tooth 51, Fig. 1, of the switch 50 communicates between a loading track 55 and a track 54 which returns the compartment 32 into its cycle is reopened. A track 84 is provided for discharging at 53 any cop which has been loaded without the end of its yarn 40 located. The forks 56 are mounted on a shaft 57. Devices 60, 61, Figs. 8 and 11, pivoted at 71, detect the passage of pin 52 along the track 55 and act with their arms against the lever 72 of a microswitch 73. A cam 62. Fig. 8, positioned in the track 55, is provided on a lever 82 connected by an arm 68 to a lever 69 joined to the shaft 57 and is acted on by the pin 52 to cause sideways movement of the forks 56 from the compartment 21 to the compartment 32. A microswitch 63 is activatable by the arm 47. When the arm 47 detects that the compartment 32 is empty, the device 58 switches the compartment 32 along the track 49. In operation, a compartment 32 is moving forward empty and the temporary absence of a cop therein is detected by the arm 47 which does not activate the microswitch 63 so that the device 58 remains raised and blocks free movement of the pin 52 along the track 48. Meanwhile, a cop 20, with the end of its yarn 40 pulled out and positioned in the opening 27, is located in a compartment 21a, Fig. 2, of the step-by-step conveyor. Since there is no cop in the compartment 32, it is deviated by the device 58 along the track 49 so that the pin 52 enters the track 55 so that the compartment 32 moves forwardly and its cover 33 moves laterally with respect thereto. Continuing along the track 55, the pin 52 activates the device 60 which emits a signal causing the compartment 21a to move forwardly one step to present its opening opposite to the passing opening of the compartment 32. During the forward movement of the compartment 21a by one step, the cop 20 is withheld from being discharged by the wall 22 until it is positioned with its respectve parts above and below the yarn between the forks 56. Meanwhile, the jaw 36 of the device 34 is openend. As the compartment 32 continues to move forwardly, the pin 52 acts against the cam 62 to turn the forks 56 which draw with them the cop 20 in the compartment 21a and place it in the compartment 32, the lower part of the cop sliding on the surface 83. As the forward movement continues, the jaw 36 closes and clamps the yarn end which moves into an open space 46 of the device 43 and the shears 44 cut the yarn end. The upper part of the yarn end is sucked away at the opening 27 and the lower part is retained by the device 34. As soon as the pin 52 has moved beyond the cam 62, the forks 56 reposition themselves under spring action. When the pin 52 meets the detector 61 a signal is emitted and if a signal is also emitted from the device 43. no signal reaches the cylinder 75 and the pin 52 passes along the track 54. However, when there is no signal from the device 43, the signal from the detector 61 activates the cylinder 75 to move the switch 50 and cause the pin 52 to pass along the track 84. When the compartment 32 passes above the empty space 53, the cop 20 therein is discharged.