JPS6153445B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device that performs thread shifting and cutting for threading during doffing of a full tube of a thread winding machine.

In recent years, in thread winding machines that cheese-wind yarn from a spinning spun or a drawing false twister, etc., there have been many processes such as doffing of full bobbins, loading of empty bobbins, cutting of tail yarns related to this, and cutting of cut supply yarn ends. Various proposals for automating the holding and threading of empty bobbins have been proposed and put into practical use.

The above-mentioned automatic doffing device is mounted on a trolley that runs in front of a large number of thread winding machines installed in parallel to perform the required doffing operation, but the thread travel path for the doffing operation is restricted. , thread cutting, and thread threading mechanisms protrude between the bobbin winder and the traveling carriage, so doffing a full bobbin and installing an empty bobbin cannot be done from the front of the bobbin winder. This had to be done from above or from the rear of the aircraft, creating problems in terms of mechanism and operation.

The present invention is a thread shifting and cutting device for threading to solve the above-mentioned problems, and includes a traverse guide bar that extends horizontally in parallel with the winding bobbin axis on the front side of the thread winding machine. A fixed thread guide is provided below the traverse guide bar, and on the other hand, on the traveling carriage side, the thread that is moved in contact with the traverse guide bar is wound from one side outside the traverse range to a position corresponding to the bobbin flange end. A cutter portion is provided on the thread shifting guide at the tip that swings from the top surface of the traverse guide bar to cover the top and rear surfaces of the traverse guide bar and moves along the traverse guide bar so as to shift the thread being transferred to one side. Simultaneously with the above-mentioned operation of the thread shifting arm, the thread shifting arm advances to just below the traverse guide bar at a position corresponding to the end of the bobbin flange, and when the thread shifting arm finishes shifting the thread to one side, it hooks the thread and retreats, and then A thread shifting and cutting device for threading in a thread winding machine is provided, which comprises a thread pulling guide that rises to pull up the thread to an appropriate position above a traverse guide bar.

Embodiments of the present invention will be described below with reference to the drawings.

Fig. 1 is a side view of the device of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a front view of the main part, and Fig. 4 is a main part showing the relationship between the thread shifting arm and the traverse guide bar. FIG. 5 is a front view of the thread shifting guide section of the thread shifting arm, and FIGS. 6 to 8 are respective perspective views showing the operation process of the thread shifting arm, traverse guide bar, and thread threading guide. .

1 to 3, 1 is a winding drive roller of a thread winding machine, 2 is a bobbin that rotates in contact with the drive roller 1, and 3 has a thread cutting groove 4 provided at the end of the bobbin shaft on its circumferential surface. Reference numeral 5 denotes a traverse guide bar extending parallel to the two bobbin axes and one drive roller axis on the front surface of the bobbin winder. In this embodiment, the traverse guide bar 5 is composed of a hollow pipe and It is connected to a reduced pressure intake tank 6 located outside. Reference numeral 7 indicates a stopper ring fixed to the traverse guide bar 5, and is provided at a position corresponding to the collar 3 at the end of the bobbin shaft of each bobbin winder. Reference numeral 8 indicates a fixed thread guide provided below the traverse guide bar 5 so as to be located approximately in the center of the thread winding width of the bobbin 2; 10 indicates an oiling roller; 11
is a thread guide provided at the tip of the lever 12, and the thread Y transferred by the swinging of the lever 12 comes into contact with and separates from the surface of the oiling roller 10, and is oiled.
Oiling is also interrupted. 13 indicates a full bobbin.

Reference numeral 20 is a cart that can move on a rail laid on the floor in front of the line of bobbin winders in parallel with the line of bobbin winders. , moves to the front of the thread winding machine and stops at the position shown in FIG.

21 is a pressure cylinder that operates on the lever 12 of the oiling roller 10; 22 is a pressure cylinder that swings a thread shifting arm 30 to be described later; 23 is a pressure cylinder that moves the thread shifting arm 30 in the direction of a spline shaft 31 that supports the thread shifting arm 30. pressure cylinder,
24 is a pressure cylinder that operates the thread-pulling guide 32; 25 is a pressure cylinder that moves the pressure cylinder 24 up and down together with the thread-pulling guide 32;
6 is a pressure cylinder that operates the threading guide 33; the pressure cylinder 21 is located approximately below the center of the cart 20; the pressure cylinders 22 and 23 are on the left side of the cart 20; and the pressure cylinders 24, 25, and 26 are located on the right side of the cart 20. are fixedly installed in each.

The thread shifting arm 30 has a downwardly bent thread shifting guide 40 at its tip, and the thread shifting guide 40 has a protruding piece 41 on the right side as shown in FIGS. 4 and 5. A fine sawtooth uneven surface 42 with which the thread engages is formed, and a cutter portion 43 is provided on the right edge of the lower surface of the protruding piece 41 via a stepped portion. The base of the thread shifting arm 30 is attached to a guide bush 35 fitted on the spline shaft 31, and the guide bush 35 is fixed to the operating end of the pressure cylinder 23 by a connecting plate 36.
The end of the spline shaft 31 is rotatably supported and protrudes through a bracket 29 erected from the frame 28, and its tip forms a shaft with a square cross section, and one end is supported at the operating end of the pressure cylinder 22. It is unrotatably fitted into a long hole provided at the upper end of the connecting rod 34. Therefore, as shown in FIG. 4, when the pressure cylinder 22 is pulled in the direction of the arrow, the connecting rod 34 swings, and in conjunction with this, the spline shaft 31 rotates slightly clockwise, and along with this, the thread pulling The arm 30 and its thread guide 40 swing from the position shown by the dashed line to the position shown by the solid line, and are positioned so as to cover the upper and rear surfaces of the traverse guide bar 5, and as the pressure cylinder 23 protrudes,
The thread shifting arm 30 moves along the traverse guide bar 5, hooks the thread Y wound up in contact with the traverse guide bar 5 onto the cutter portion 43 of the stepped portion of the protruding piece 41, and moves the thread Y in the direction of the stopper ring 7. to slide.

The stopper ring 7 has a fixed ring 71, a sliding ring 72, and a coil spring 73 between them, and the sliding ring 72 has a guide piece 74 having an upper edge that slopes downward in the direction toward the thread Y running on the upper surface. is erected and seals the intake hole 75 communicating with the internal intake passage of the traverse guide bar 5.

The threading guide 33 is composed of bifurcated pieces, each of which has a threading edge with a wedge-shaped notch at its tip. The threading guide 33 is fixed to the tip of a guide bar 45 held parallel to the pressure cylinder 26, and the guide bar 45 is connected to the guide bar 45 by a connecting plate 46 at the operating end of the pressure cylinder 26.
The pressure cylinder 26 is supported so as to be rotatable around the axis of the pressure cylinder 26, and is held through a guide tube 47 fixed to the pressure cylinder 26. A guide groove 4 is formed on the outer surface of the guide bar 45 and extends in the axial direction and is bent slightly obliquely in the middle.
8 is recessed, and a pin 49 fixedly protruding from the guide tube 47 is engaged with the guide groove 48 . Therefore, by the operation of the pressure cylinder 26, the guide bar 45 protrudes together with the connecting plate 46 at its working end, and by the time it reaches the position 33' shown by the dashed line of the collar 3 of the bobbin 2 on the drive roller 1, the guide bar 45 has been moved. It rotates 60° to 90° around its axis.

Based on the above-mentioned configuration, this device performs the doffing process of a full bobbin and the thread threading process when an empty bobbin is installed, as described below.

When the bobbin reaches full capacity, the pressure cylinder 21 operates to release the thread Y from the oiling roller surface, and at the same time the pressure cylinders 22 and 23 operate to move the thread shifting arm 30 to the upper and rear surfaces of the traverse guide bar 5. While swinging to cover the thread, the thread shifting arm 30 is advanced along the traverse guide bar 5 to push the thread Y in contact with the surface of the traverse guide bar 5 to the right. During this time, the pressure cylinder 24 operates to project the thread pulling guide 32 to the dashed line 32' directly below the traverse guide bar 5, and when the thread pulling arm 30 presses the sliding ring 72 of the stopper ring 7, the pressure cylinder 24 is activated. 24 operates in reverse, the thread pulling guide 32 hooks the thread Y' and returns to the solid line position as shown in FIG. , set the path of yarn Y to state Y''.

When the thread shifting arm 30 slides the sliding ring 72 of the stopper ring 7 in the direction of the fixed ring 71 against the elastic force of the coil spring 73, the thread shifting arm 30 engages the cutter portion 43 of the thread shifting guide 40. The thread Y that had been aligned is pressed against the side surface of the sliding ring 72 and is cut by the increased winding tension on the bobbin side, and the suction hole 75 opened by the movement of the sliding ring 72. The yarn on the supply side is sucked into the bobbin and the state shown in FIG. 6 is obtained, and the other yarn end is wound onto the full bobbin 13, doffed, and replaced with the empty bobbin 2.

In this state, the supply side of the yarn Y is regulated by the path of the fixed ring 8, the raised yarn pulling guide 32'', and the suction hole 75, and is transferred.
The pressure cylinder 26
As a result of the operation, the guide bar 45 protrudes and is engaged between the wedge-shaped notches of the bifurcated piece of the threading guide 33 at its tip, resulting in the state shown in FIG. 45 arrives while rotating and is guided into the thread cutting groove 4 of the collar 3,
The cut and supplied yarn side is held by an appropriate yarn end holding member provided on the inner surface of the collar 3 of the bobbin 2, for example, the hook sheet surface of a hook-and-loop fastener, and the other cut yarn is sucked into the suction hole 75 and removed, and the yarn is attached to the bobbin 2. The hook is finished.

At the same time as threading on the bobbin 2 is finished, the pressure cylinder 25 operates in the opposite direction, the thread pulling guide 32 descends, and the thread touches the inclined surface of the guide piece 74 of the sliding ring 72 and moves toward its tip. Then, it engages with the uneven surface 42 on the upper surface of the protruding piece 41 of the thread guide 40, and by the reverse operation of the pressure cylinder 23, it moves to the right so as to be stopped by the traverse guide pin as shown in FIG. state, and the thread guide 40 further moves to the left,
The thread is separated from the uneven surface 42 due to the tension, and the thread is wound by the normal operation of the traverse guide pin.

During this time, the pressure cylinder 21 operates in reverse and pulls its operating rod back forward of the thread path, causing the lever 1
2 resists the thread tension due to its own weight, and thread guide 1
1, the thread Y is oiled. Also, the pressure cylinder 26 operates in reverse to pull the thread guide 33 back to its original position, and the pressure cylinder 22 operates in reverse to move the thread shifting arm 30 so that the thread shifting guide 40 at its tip is above the path of the thread Y. It swings and returns to its original state.

In this way, the bobbin 2
0 is one that moves and stops at the front of the thread winding machine and automatically performs the above-mentioned thread shifting, cutting, thread threading operation process.

As explained above, according to the present invention, when doffing a full bobbin of a thread winding machine or installing an empty bobbin, the thread being traversed is shifted toward the flanged end of the bobbin. Since the thread cutting and thread threading operations are performed at this position, sufficient space can be provided in front of the bobbin winding machine, and the bobbin exchange mechanism can be installed in the front of the bobbin winding machine. Since it is possible to simplify and ensure reliable operation, the effect of contributing to automating the bobbin exchange of a thread winding machine is enormous.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention.
The figure is a side view, Figure 2 is a plan view, Figure 3 is a front view of the main parts, Figure 4 is a perspective view showing the relationship between the thread shifting arm and the traverse guide bar, and Figure 5 is the thread of the thread shifting arm. The front view of the shifting guide and FIGS. 6 to 8 are perspective views showing the operation steps of the thread shifting arm, the traverse guide bar, and the threading guide. 1... Drive roller, 2... Bobbin, 3...
Tsuba, 4... Thread cutting groove, 5... Traverse guide bar, 7... Stopper ring, 8... Fixed thread guide, 13... Full bobbin, 20... Cart, 21,
22, 23, 24, 25, 26...Pressure cylinder, 30...Yearing arm, 32...Year pulling guide, 33...Yearing guide, 75...Intake hole.

Claims (1)

[Claims] 1. For a thread winding machine that has a traverse guide bar extending parallel to the thread take-up bobbin axis and a fixed thread guide provided below the traverse guide bar on the front side, the thread is moved in contact with the traverse guide bar. From one side outside the traverse range to a position corresponding to the end of the bobbin flange, it swings from the top surface of the traverse guide bar so as to shift the yarn being transferred to the winder to one side, and covers the top and rear surfaces of the traverse guide bar and traverses. A thread shifting arm is provided with a cutter portion on the thread shifting guide at the tip that moves along the guide bar. Simultaneously with the above operation of the thread shifting arm, the thread shifting arm advances to a position directly below the traverse guide bar at a position corresponding to the end of the bobbin flange, and A thread shifting and cutting device for thread winding in a thread winding machine, which comprises a thread pulling guide that hooks the thread and retreats when the arm finishes shifting the thread to one side, and further rises to pull the thread above a traverse guide bar.