JPS6050701B2 - Thread removal device for a thread winding machine with multiple bobbins - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a thread removing device in a thread winding machine having a plurality of bobbins, particularly in a contact friction drive type thread winding machine using friction rollers.

Patch winding of the bobbin is essential for continuous post-processing of synthetic fibers that require post-processing such as false twisting.
In order to wind a patch, the thread must be removed from the traverse guide and wound onto the outer side of a bobbin of a predetermined length.

Conventionally, in a contact friction-driven thread winding machine using a friction roller, a thread removal lever extending in the bobbin axial direction temporarily removes the thread from a traverse guide, and then moves the thread in the bobbin axial direction. f,゛Lu ・
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-i To ■■゜ j, There are two patch winding methods that simultaneously remove the thread from the traverse guide and shift the thread to the end of the bobbin by moving the thread shifting piece having an inclined thread contact surface in the direction of the bobbin axis. It has been adopted.

However, in the former case, when the thread is removed by the thread release lever, the thread is wound around a certain part of the bobbin, which is called stick winding, but this stick winding is the most common type of winding machine, especially in a contact friction drive type winding machine using a friction roller. This is a point that should be avoided, and in the latter case, in a contact friction type winding machine, usually about four bobbins are supported on one bobbin shaft with their ends butted against each other, and therefore there is a gap between the traverse guides of each bobbin. The gaps created in the traverse guide are short, and in order to remove the thread from the traverse guide, it is necessary for each thread shifting piece to exist in the above gaps, and as the winding layer on the bobbin thickens, The thread moves in the traverse guide, so the thread insertion hole in the traverse guide needs to have some depth.For the above two reasons, the angle of inclination of the thread contacting surface of the thread shifting piece should not be large. Unavoidably, for this reason, the thread cannot be removed properly from the traverse guide when the thread shifting piece is moved in the direction of the bobbin axis, which may not only result in patch winding failure, but in worse cases, the thread may break and the thread must be re-threaded. There were some shortcomings.

In short, a device that can reliably remove the thread from the traverse guide of each bobbin when multiple bobbins are supported side by side on the bobbin shaft has problems with the thread removal procedure, and when using a winding machine with multiple bobbins side by side, This has not been realized due to the problem that the installation space for the removal device is limited to a small space.

Therefore, the present invention solves the above-mentioned problems and can be compactly installed near the bobbin support shaft even in a winding machine with a plurality of bobbins lined up.In addition, it is equipped with a thread removal rod to remove the thread from the bobbin. There is provided a thread removing device for a thread winding machine which allows thread removal to be performed reliably. Examples will be described below with reference to the drawings.

In FIGS. 1 and 2, a plurality of (four in the figure) bobbins Bl, B2, B3, and B4 are supported on a bobbin support shaft 1 with their ends abutting each other.

The bobbin B is brought into surface contact with the friction roller 2 and is driven by friction. 3 is a traverse cam box, and the box 3 is provided with traverse guides G1, G2, G3, G4 corresponding to each bobbin B1, . . .

The thread Y is traversed by the traverse guide G from each fixed thread guide 4 provided at the traverse center of each traverse guide Gl, G2, G3, G4, runs along the surface of the friction roller 2, and is wound onto each bobbin B. .

The traverse cam box 3 and the friction roller 2 are mounted on one movable bracket 5, while the bobbin shaft 1 is fixed in position, so that the traverse cam box 3 is moved in accordance with the winding of the yarn layer on the bobbin. And the friction roller 2 is bo. The thread Y moves in a direction away from the pin B (to the left in Figure 2), and therefore the thread Y moves between the thread path Y1 at the beginning of winding and the thread path YE at the end of winding, and enters the thread insertion groove 6 of the traverse guide.
is defined as the depth that can cover the above movement range.

That is, each thread Y has a traverse width '1 in FIG.
This means that the rectangular range consisting of the width E2 between E is traversed. In the conventional device, the yarn shifting piece having an inclined surface must be provided in the gap E3 between the traverse widths e1, and the punch winding is performed so that the yarn Y is at the deepest point of the yarn insertion groove 6 at the initial winding. At some point, in order to allow the yarn Y to escape from the groove 6, the slope of the slope has to have a maximum width of E3 and a minimum length of E2, that is, a steep slope, which causes the above-mentioned problem.

Reference numeral 7 denotes a guide tube of the thread shifting lever 10 which has one end fixed to the bracket 5 and the other end fixed to the cam box 3 via a lever 20, and a slide piece 8 fitted into the guide tube 7 so as to be slidable and rotatable.
, 9, the thread shifting lever 10 is constructed entirely as a bar extending between all the bobbins, and has comb-like thread shifting projections Tl, T2, T3, T4 corresponding to each bobbin B1. During the thread traverse by the traverse guide G, each of the protrusions T is located at each bobbin end 7 (the left end of each bobbin in FIG. 1) outside the traverse area of each bobbin.

The slide pieces 8 and 9 are connected by rods 11 and 12 to a piston rod 14 of a moving cylinder 13 fixed to the bracket 5. The guide pipe 7 is provided with long grooves 15 and 16 as shown in FIG.
Cylindrical portions 8a and 9a protruding from the slide pieces 8 and 9 are fitted into the slide pieces 8 and 9, respectively. The long grooves 15 and 16 are two axial portions 15a and 15 provided at right angles to each other in the circumferential direction of the guide tube 7.
Jb, 16a, 16b and straight inclined parts 15c, 16c connecting both axial parts. 17 is lever 18,1
9 is a thread removal rod rotatably supported on the guide tube 7.

The functions and operations in the above embodiment will be described in detail below.

First, at the beginning of winding, the thread removing rod 17 is rotated and placed at the position 17a shown in chain lines in FIG. the front end of bobbin B4 (first
The end of the thread is captured onto the bobbin B4 by hooking it onto the notch provided at the right end of the figure. The thread path at this time is indicated by the second section ■0, and the thread path is away from the traverse guide G. At the same time as the thread end is caught on the bobbin B4, each thread slides on the thread removal rod 17a, and each thread guide 4 If the thread removal rod is moved to the position , that is, the center of the traverse area of each bobbin, and immediately after the movement, the thread removal rod is turned to the standby position 17, the thread path becomes Y1, and each thread is picked up by each traverse guide Gl, G2, etc. An initial winding is performed on each bobbin. After some initial winding period, piston rod 1
4 to the right in Figure 1. Then, the thread shifting lever 10 advances to the right in FIGS. 1 and 3, and the slide piece 8,
The cylindrical portions 8a, 9a of 9 move in the long grooves 15, 16 to form groove portions 15A, 15c, 15b and 16a, 16c, 16b.
During the transition, the thread shifting lever 10 rotates 90 degrees from the standby position T shown by the solid line in FIG. 2 to the chain line position Ta.

Boundary portion 15d of groove portions 15a, 15c. Groove portion 16a,
When the cylindrical parts 8a and 9a are located at the boundary 16d of the thread shifting lever 16c, the thread shifting lever 10 is in the standby position shown by the solid line in FIG. I'm getting started.

By the above-mentioned turning operation, the thread of each bobbin is removed smoothly and reliably from each traverse guide Gl, G2, etc., and as soon as the thread is removed from the traverse guide, the thread shifting lever 10
Each comb-shaped protrusion T1...
is hooked onto the bobbin and guided to each bobbin end without remaining in place on the bobbin, ie without causing said rod winding.

When the thread shifting lever 10 is at its most advanced position, the cylindrical portions 8a and 9a
have reached the groove portions 15b, 16b, and at the most advanced position, punch windings Wl, W2,
W3 and W4 are applied.

When the piston rod 14 is moved back after the predetermined punch winding has been performed, the thread shifting lever moves back in the opposite direction to that described above, rotates, and returns to its original position, so that each thread is moved again to each bobbin Bl, B2, etc.
Return to the center position of... and move each traverse guide G1...
It is picked up by... and officially rolled up. As described above, in the present invention, the thread removing device includes a guide tube provided parallel to the bobbin support shaft, a slide piece inserted into the guide tube so as to be slidable and rotatable, and a thread removal device extending from the guide tube through the slide piece. It consists of a thread shifter lever having a comb-tooth-like protrusion that protrudes toward the end, and a cylinder for moving a slide piece. As the slide piece is moved by the moving cylinder, the thread shifting lever having comb-tooth-like protrusions moves in a spiral around the guide tube, and each thread moves in the area between the comb-tooth-like protrusions. Therefore, the thread is securely removed from the traverse guide, and furthermore, it is hooked on the comb tooth-like protrusion and securely moved to the punch winding area on the outside of the bobbin. Since it is carried out continuously by the spiral movement of the lever, there is no occurrence of the turning of the rod as mentioned at the beginning. Furthermore, since the entire device is composed of a guide tube installed parallel to the bobbin support shaft, a slide piece inserted into the guide tube, and a cylinder for moving the slide piece, it is compact and allows multiple bobbins to be lined up. However, the thread removing device of the present invention can be easily attached to a winding machine with little extra space, and the thread removing rod is rotatably supported using a guide tube. First, use the thread removal rod to thread each bobbin, and then use the needle threading lever with the thread release rod moved back to punch-wind the thread on each bobbin. Can be done.

[Brief explanation of the drawing]

Fig. 1 is an exploded side view showing a partial cross section of an embodiment of the device of the present invention, Fig. 2 is a cross-sectional view taken along the line X-X of Fig. 1, and Fig. 3 shows the guide portion of the similar lever. , a is a developed view of the guide tube, b is a cross-sectional view of the guide tube at a portion indicated by a chain line, and c is a cross-sectional view of the guide portion of the thread shifting lever shown for correspondence with A and b. 1... Bobbin support shaft, 7... Guide tube,
8, 9)...Slide piece, 8a, 9a...
...Cylindrical part, 10... Thread shift lever, 13...
...Cylinder, 15, 16...Long groove, 15c,
16c... Slanted part, 17... Thread removal rod, T... Protruding part.

Claims (1)

[Claims] 1 A guide tube provided parallel to the bobbin support shaft, a slide piece inserted into the guide tube so as to be slidable and rotatable, and a comb-tooth-shaped slide piece protruding from the slide piece to the outside of the guide tube. It consists of a thread shifting lever having a protruding part and a cylinder for moving a slide piece.The slide piece is provided with a cylindrical part that engages with a long groove having an inclined part formed in a guide tube, and the guide tube has a cylinder for moving a slide piece. 1. A thread removing device for a thread winding machine having a plurality of bobbins, characterized in that the thread removing rod is supported by a rotatable thread removing rod.