JPS6211884Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a turning device for a thread guide in a doffing device.

The thread guide is used to guide the thread end when the package cage is full and the thread is being wound up.The thread guide guides the thread end to remove it from the trajectory and cut the thread. It is desirable to move the guide along the circumference of the package cage as much as possible. If the center of rotation of the thread guide is located at a point away from the center of the package cage, at least the radius of the arc of the trajectory of the pivot will be larger than the radius of the full package cage, and the movement space of the thread guide will be larger around the package cage. I will have to. especially,
When the thread guide and its swinging mechanism are mounted on a knotter wheel, the knotter wheel is equipped with various devices such as a knotter, yarn end absorption device, package reversing device, etc. The range of movement must be reduced.

The device of the present invention has been improved in this respect, and an embodiment thereof will be described below with reference to the drawings.

Reference numeral 1 designates a package winding device in which a plurality of rows of units are arranged side by side on a machine base, and a knotter wheel 2 is provided to move along the rows of units in front of or inside the machine machine. The knotter wheel is equipped with devices (not shown) such as a knotter for tying the end of the thread when the thread to be wound into the package cage is cut, a suction device that sucks both cut thread ends and guides the thread end to the knotter, and a thread shifting device. 3rd class is provided.

The thread shifting device 3 is constructed as follows. 4
1 is a frame body of a saw wheel 2, which rotatably supports a shaft 5, a gear 6 and a triangular plate 7 are integrally provided on the shaft 5, and a main lever 8 is provided rotatably with respect to the shaft 5. A rod 9 is pivotally supported at one end of the main lever 8. A dog 34 that engages with the triangular plate 7 is fixed between the connecting portion of the rod 9 of the main lever 8 and the shaft 5. 1
0 is a sector gear supported by a support shaft 11 on the frame 4 of the saw wheel 2, and meshes with the gear 6. A rod 12 is pivotally supported on the sector gear 10. The rods 9 and 12 abut against a group of cam plates (not shown),
The rotation moves up and down, swings the main lever 8, and reciprocates the sector gear 10. At the tip of the main lever 8, a thread guide support arm 13 and a lever 14 integrated therewith are pivotally supported by a shaft 15.
and the triangular plate 7 are connected by a rod 16. A plate-shaped thread guide 17 is provided at the tip of the thread guide support arm 13 so as to extend in the width direction of the circumferential surface of a package 18, which will be described later. A regulating piece 20 is provided on the guide edge 19 of the thread shifting guide 17 at a position close to the support arm 13, and a taper toward the regulating piece 20 is formed.

The package 18 is supported by a cradle 21 provided on the machine frame. package 18
The supporting position is such that the shaft 15 at the tip of the main lever 8 is located on the side of the shaft center line C of the package 18 when the main lever 8 is turned. The length of the thread guide support arm 13 is set based on the radius R of the largest package that can be wound up, and is slightly larger than the radial distance R of the largest package. The distance D between the shaft 5 and the shaft 15 of the main lever 8 is set approximately equal to the distance D between the shaft 5 and the shaft center line C of the package 18 at a fixed position where the maximum package is separated from the traverse drum 22 described later. . 2
Reference numeral 2 denotes a well-known traverse drum, and traverse prevention plates 28, 28 are provided on both sides of the circumferential surface of the drum. Reference numeral 23 denotes a thread guide rod having a curved portion 27 at its tip for pressing the package side thread end against the package side surface and winding it onto the tube paper when the package is fully wound. Reference numeral 24 denotes an auxiliary roller that rotates the package and is supported at the tip of the swing arm 31. 32 is a lifting lever, and a pin 33 provided on the side of the cradle 21
The cradle 21 is pulled up and the package 18 supported by the cradle 21 is separated from the traverse drum 22.

Next, the operation of the device of the present invention will be explained. When flat-rolling a full package, the rod 9 is pulled up in the direction of arrow 35 in FIG. The shaft 15 at the tip of the main lever 8 is located on the side of the center position of the package shaft. As a result, the main lever 8 and the support arm 13 are
a, 13a position. Subsequently, the rod 12 is pulled up in the direction of the arrow 36 by a cam of a cam plate group (not shown), and the sector gear 10 rotates clockwise around the shaft 11. As the sector gear 10 rotates, the gear 6 meshing with the gear 10 rotates counterclockwise, the shaft 5 to which the gear 6 is fixed also rotates in the same direction, and the triangular plate 7 fixed to the shaft 5 rotates counterclockwise. rotate. That is, the rod 16a at the two-dot chain line position is indicated by the arrow 37.
Support arm 1 integrated with lever 14 when pushed in the direction
3 rotates in the direction of arrow 38 around the shaft 15, and rotates the thread guide 17 along the outer periphery of the package without contacting the package 18.
The thread 25 is engaged with the guide edge 19 of the thread shifting guide 17 through the gap between the thread 25 and the traversing drum 22. on the other hand,
The thread guide rod 23 is rotated by a mechanism not shown along a locus of movement that picks up the end of the bobbin 18 from the knotter wheel 2 side, and the curved portion 27 of the thread guide rod 23 is pressed against the package end surface 26. Then, the swing arm 31 swings from a standby position (not shown), presses the auxiliary roller 24 rotating in the direction of arrow 39 against the surface of the package 18, rotates the package 18, and moves the thread 25 to the position of the regulating piece 20. During this time, the lifting lever 32 is operated so that the package 18 is once brought into contact with the traversing drum 22, and the yarn existing at the position of the traversing prevention plate 28 is removed from the groove 29 of the traversing drum.

That is, when the yarn shifting guide 17 engages with the yarn 25 between the traverse drum 22 and the package 18 in the third illustration, the traverse drum 22 shown by the two-dot chain line 25a
Thread 25 is attached to the twill slip-off prevention plate 28 area provided at both ends.
If there is a, even if only the package 18 is rotated, the yarn 25a engages with the groove 29 of the traverse drum and does not move along the yarn shifting guide 17, so the traverse drum 22 is rotated once. The yarn 25 that comes off the twill slip-off prevention plate 28 due to the rotation of the traverse drum 22 jumps out of the drum groove 29 and runs along the slanted taper part of the yarn shifting guide 17 to the timing piece 20.
The thread 25 falls from the end face of the package and is wound around the bobbin 30. When a predetermined selvage is applied to the end of the bobbin 30 of the fully-wound package, the threads connected between the fully-wound package 18 and the pipe yarn below the unit (not shown) are cut and grasped. Yarn cutting is performed at the thread 25b between the outer circumferential surface of the full package cage 18 and the thread shifting guide 17, but since the distance between the surface of the package 18 and the thread shifting guide 17 is small, the thread shifting guide is cut as shown in FIG. 17 passes between the package 18 and the traversing drum 22, the main lever 8 turns again, the shaft 15 is located at the position shown by the three-dot chain line, and the distance between the thread guide 17 and the surface of the package 18 is increased. In synchronization with the movement of the thread guide 17 to the above state, a cutter/clamp device (not shown) cuts the thread and winds the end of the thread onto a new bobbin.

As detailed above, in the device of the present invention, the thread guide support arm that supports the thread guide is pivoted at the tip of the main lever, and the shaft that supports the main lever and the thread guide support arm are pivoted. The distance between the thread guide and the shaft is set so that when the main lever rotates, the spindle of the thread guide support arm is positioned on the side of the center of the package cage, so the thread guide is close to the circumferential surface of the package cage. This makes it possible to reduce the space in which the thread shifting guide is moved, and to facilitate the layout inside the knotter wheel on which the thread shifting device is mounted.

[Brief explanation of drawings]

FIG. 1 is a rear view, FIG. 2 is a side view, and FIG. 3 is a perspective view. DESCRIPTION OF SYMBOLS 1... Package winding device, 3... Thread pulling device, 5... Support shaft, 8... Main lever, 9, 12,
16... Rod, 13... Thread shifting guide support arm, 15... Shaft, 17... Thread shifting guide, 18...
...Package, C...Axis center line.

Claims (1)

[Scope of utility model registration request] At the tip of the main lever, which is swingably supported on a support shaft installed parallel to the center line of the shaft of the full package cage,
A thread guide support arm is pivotally supported with a distance between the support shaft and the support shaft equal to the distance between the center line of the shaft of the full package cage and the center line of the support shaft, and at the tip of the thread guide support arm, A plate-shaped thread guide is provided that extends in the width direction of the peripheral surface of the package, and the main lever and thread guide support arm each have separate pivoting means, so that the main lever pivots and A doffing device in which the thread guide support arm rotates when the shaft of the thread guide support arm is positioned on the side of the center of the winding shaft of the package cage, causing the thread guide to rotate at a constant distance from the circumferential surface of the package cage. A turning device for the thread guide in the device.