JPH03180526A - Simultaneous doffing of fine spinning frame or the like - Google Patents

Abstract

PURPOSE:To surely maintain lead ends and to prevent end breakage without causing loop separation by holding tail ends of full bobbins taken out from spindles in a preserving peg once without cutting the tail ends and then cutting the tail ends. CONSTITUTION:When amounts of yarn wound reach a given amount, lead ends 42 connecting from spindles 39 to winding bobbins during operation of a fine spinning frame 1, etc., are cut by a cutter 13. Then, when the bobbins on the spindle 39 become full bobbins 37, the frame is stopped, the full bobbins are extracted from the spindles and attached to a preserving peg 7. Then, empty bobbins 36 retained in a bobbin holder fixed to the fine spinning frame are taken out, the empty bobbins are fixed to the spindles, loops are wound and pressed, the full bobbins attached to the preserving peg are extracted and tail ends 46 are cut by a cutter 12 before the full bobbins are fixed to the bobbin holder.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for simultaneously changing tubes of spinning machines, etc., and more particularly to a method for ensuring proper treatment of tail threads during simultaneous tube changes.

Conventional technology and its problems After removing a full bobbin from the spindle in simultaneous tube change, it is extremely important to secure the yarn when winding the yarn onto the next empty bobbin.If this is not done completely, the yarn may break. Occur. Conventionally, as a measure to secure the yarn, a waist spool is installed at the bottom of the spindle, and the end of the yarn is wound on this waist spool, and when the bobbin on the spindle is full, the bobbin and the butt are wrapped. Two methods have been adopted: a method in which the bobbin is wound on the spindle as a loop winding while unwinding the end winding when a full bobbin is removed.The present application relates to an improvement of the latter of the above two methods. be.

Compared to the first method, the second method has advantages such as not only stable rotation but also less power consumption because the spindle has a shorter overall length, and there is no need to dispose of the tail thread wrapped around the waist spool. However, conventionally, the loop winding was held onto the spindle by slight friction caused by the fuzz of the spinning yarn, which often caused the loop winding to fall off the spindle. 6
As shown in No. 1-132642, a hook with short fibers flocked by electric flocking etc. is attached to a predetermined position of the fitting hole of the spindle and bobbin to the spindle (Figs. 7 and 8).
Figure) has been proposed that prevents the loop from coming off and makes it easy to remove the loop wound around it. However, these improvement measures are not always satisfactory, as friction between the flocks on the hooks of both the spindle and the bobbin causes the flocks to wear out or fall off, resulting in a decline in functionality and the need for periodic replacement. is not obtained.

Means for Solving the Problems The present application addresses the problems of the conventional method described above, and when the bobbin on the spindle becomes full, the bobbin winding and the tail winding are performed.
In simultaneous tube change of spinning machines, etc., in which the tail thread is unraveled when a full bobbin is taken out, and the spindle is loop-wound to perform the tube change, the thread running between the spindle and the bobbin being wound is removed during the operation of the spinning machine, etc. The process of cutting the thread with a cutter, the process of stopping the bobbin on the spindle when it is full, and the process of removing the full bobbin from the spindle and inserting it into the deposit peg, and the process of holding the bobbin with a tube holding device attached to the spinning machine, etc. The process of removing the empty bobbin, inserting it into the spindle, and pressing down on the loop winding.

Remove the full bobbin inserted into the deposit peg.

Before inserting this full bobbin into the tube holding device, the step is to cut the tail thread that is connected between the spindle and the full bobbin with a cutter.

This method completely prevents the loop from coming off, and also ensures the removal of the remaining yarn on the spindle, thereby eliminating the problems of the conventional method.

Example The present application will be described in detail below with reference to drawings showing examples.

- As is widely known, various types of pipe switching equipment have been adopted, and pipe switching methods have been adopted that involve numerous steps, but what is the essence of it?

First, while the spinning machine or the like is in operation, the thread connected between the spindle and the bobbin is cut with a cutter, and the loop winding on the spindle becomes residual thread by this cutting.

After that, a dotting bar equipped with a number of tube gripping devices moves up and down, swings, or back and forth in a predetermined order, extracts the full bobbin from the spindle, inserts an empty bobbin into this spindle, and removes the full bobbin from the spindle. The purpose is to cut the tail thread that runs between the full bobbin and the full bobbin with a cutter. Various cutters for cutting this tail thread and cutters for cutting the above-mentioned cord have also been proposed, but in the following description of the embodiments of the present application, a simultaneous pipe change device is disclosed in Japanese Patent Laid-Open No. 1-3758. Regarding the cutter for cutting the tail thread, Japanese Patent Application Laid-open No. 60-81337 and Japanese Patent Application Laid-Open No. 60-60
In addition to the cutter disclosed in Japanese Patent No. 185828, the cutter for cutting the webbing will be described as being mounted on the cutter for cutting the tail thread described above, but the structure of each of these devices itself will determine the pros and cons of the present application. Therefore, a detailed explanation of the configuration will be omitted in the following explanation.

In Figures 1 to 3, 1 is a spinning machine, or 2 is a spinning machine 1
A simultaneous pipe switching device installed on both R and L sides (upper and lower in Figure 2) of the pipe switching device! A large number of tube gripping devices 14 are arranged on the dotting bar 3 of No. 2 in correspondence with the spindle 39, and a vertical movement device i! 5 and the swinging device w6 perform vertical and swinging movements in accordance with a predetermined sequence to be detailed later, thereby replacing full and empty pipes, that is, replacing the pipes. In one drawing, 7 corresponds to each spindle 39. The 0th order 8, which is the holding bed installed in the machine, is a tube holding device attached to the spinning machine 1.
A large number of peg trays 10 with protruding pegs 11 and having a diameter equal to the spindle pitch are fitted into the guide rail 9, and are intermittently moved by a drive mechanism (not shown), so that the pegs 11 are at the stop position. It directly faces the spindle 39 vertically.

Next, the outline of the cutter 12 for cutting the tail thread will be explained. This cutter 12 is manufactured by the above-mentioned Japanese Patent Application Laid-open No. 60-8133.
No. 7 and Japanese Patent Application Laid-Open No. 60-185828, a cutter 13 for cutting cords, which will be described later, is installed,
Although there are some changes such as having the rotary blades 14 set on one side, the operating principle is all the same as that of the conventional device described above.

As shown in FIGS. 3 and 4, the cutter 12 for cutting the tail yarn has a traveling body 16 mounted on a guide rail 15 provided in the front of the spinning machine stand, and this traveling body 16 is shown in FIG. As shown, it is connected by a connecting fitting 19 (Fig. 4) to a rope 18 stretched between the GE and pulleys 17 and 17a provided on the GE side, and is reciprocated along the spindle row by the forward and reverse rotation of the motor 20. . On the right side of the upper part of the traveling body 16 in FIG. 4, a pair of rotary blades 14 are rotatably vertically pivoted, and the rotary blades 14 have a moderate contact pressure and a portion of the levers overlap. . Next, 21 is a drive system that transmits the rotation of the drive shaft 22 to the rotary blade 14.

A pair of intermediate V pulleys 25 and 26 are provided between the ■ pulley 23 attached to the drive shaft 22 of the traveling body 16 and the ■ pulley 24 attached to the lower rotary blade 14, and these V pulleys 23, 24 , 25 and 26, respectively. The tensioning of the belt 27 is such that when the traveling body 12 travels from the left side GE to the right side OE in FIG. As shown by the arrows in Figure 4, they rotate in the direction of drawing objects into each other. A cutter 13 for cutting the cord is mounted on the cutter 12 for cutting the tail thread, and its outline is as follows. In FIG. 3, reference numeral 28 denotes a drive shaft rotatably supported on the traveling body 16. At the shaft end of the traveling body 16 protruding toward the spinning machine 1 side, there is a drive arm 29 on which a roller 30 is pivotally supported; A pinion 31 is attached to the side shaft end, and this pinion 31 meshes with a rack par 32 supported by the traveling body 16 so as to be able to move up and down within a predetermined range. Next, 33 is a sector type pinion that is rotatably supported on the traveling body 16 and meshes with the upper part of the rack parr 32 described above, and this pinion 33 has an arm rod 35 having a cutting blade 34 at the tip. installed. As described above, the traveling body 16 is guided by the guide rail 15 and travels left and right in FIG. 1 along the spindle row, and waits at the left and right standby positions until a predetermined time. The roller 30 of the arm 29 hits a rotating member (not shown), causing the driving arm 29 to alternately rotate forward and backward at a predetermined angle (FIG. 4), thereby moving the arm rod 35 to the operating position shown by the solid line in FIG. 3. and the storage position shown by the imaginary line.

In this embodiment, in FIG. 1, the standby position of the right side OE is the working position, and the standby position of the left side GE is the storage position.

In the above manner, the pipe changing method of the present invention is carried out as follows, and this pipe changing method will be explained in order with reference to the operation diagram shown in FIG. Spinning machine 1 is in operation.

The dotting bar 3 is connected to the spindle 3 as shown in FIG.
9, and an empty bobbin 36 is inserted into the peg 11 of the peg tray 10. As shown in FIG. 9A, the bobbin 36A on the spindle 39 is approximately 3
8 and the ring rail 40 rises, the cutter 12 that has been waiting on the GE side of the spinning machine starts running, and the webbing cutter 13 sequentially cuts the webbing 42A (FIG. 6). Through this cutting operation, the yarn 42A is wound around the spindle 39 due to the previous tube exchange, and the loop winding 42 connected to the spinning yarn 41 being wound is severed from the spinning yarn 41, and the loop winding 42 is wound onto the spindle 39. It becomes a rolled-up residue,
The cutter 12 waits for the next operation on the opposite side (FIG. 9A).

At this time, the cutter 13 is in the retracted position indicated by the imaginary line in FIG. 3, as described above. When the bobbin 37 on the spindle 39 is full, the ring rail 4o is operated to perform the bobbin winding 43 and the tail winding 44 (FIG. 3). Next, the dotting bar 3 in the standby position swings greatly in the direction away from the machine base [hereinafter referred to as the (-) side], then rises, and moves in the direction closer to the machine base [hereinafter referred to as the (+) side]. The tube gripping device 4 grips the full bobbin 37 by swinging and further lowering the bobbin 37 (FIG. 9B), the dotting bar 3 rises and extracts the full bobbin 37 from the spindle 39, and this removing operation causes the above-mentioned The loop winding 42 wound around the spindle 39 as a residual thread is hooked onto a hook 45 (FIG. 8) attached to the bobbin 36A and held in the hole of the bobbin 36A, so that the loop winding 42 is wound on the spindle 39 as a residual yarn. removed. Also, by removing the full bobbin 37, the buttband 44 is unraveled,
Spindle 39 from which the remainder (previous loop winding 42) has been removed
It is wound as a loop winding 42 (FIG. 9C).

The dotting bar 3 that has taken out the full bobbin 37 swings a little to the (-) side, then performs a downward movement, inserts the full bobbin 37 that is being gripped into the holding peg 7, and thereby pulls it out from the full bobbin 37. The unraveled tail thread 46 passes from the full bobbin 37 to the anti-node ring 47 to the spindle 39.
Finally, the spinning yarn 41 is wound around the spindle 39 as a loop winding 42, and then passed through the traveler 48 to the draft part 4.
9, the loop winding 42 is connected to the tail thread 46 stretched between the spindle 39 and the anti-node ring 47.
As a result, a slight tension is applied in such a way that the loop is pulled, so no loop disconnection occurs (FIG. 9D).

After that, the dotting bar 3 rises, further swings to the (-) side, then descends greatly, then swings greatly to the (+) side, and finally performs a slight downward movement to grip the empty bobbin 36. (Fig. 9E), the dotting bar 3 that grips the empty bobbin 36 rises a little and moves the empty bobbin 3
6 from the peg tray 10, then large (-
) side and further rises to the highest position, and after swinging greatly from the raised position to the (+) side, a downward movement is performed to insert the empty bobbin 36 being held into the spindle 39. The loop winding 42 is applied to the spindle 39 as described above, and this loop winding 42 is held between the inserted bobbin 36 and the spindle 39, and is held down during restart as described later. The thread 42A is securely secured (FIG. 9F), and the dotting bar 3 into which the empty bobbin 36 is inserted is
After rising a little and swinging to the (-) side, it descends, and the first dotting bar 3, which grips the full bobbin 37 on the deposit peg 7, reaches its highest position! By swinging to the (-) side after rising to the page, the tail thread 46 is stretched obliquely between the spindles 39 from the full bobbin 37 via the anti-node ring 47, and the spinning thread 41 is passed from the loop winding 42 to the traveler. 4
8 to the draft part 47 (FIG. 9G). When the tail thread 46 unraveled in this way is stretched, the thread 42A is cut in the above manner, and
The cutter 12 that was waiting on the E side runs along the spindle row again and cuts the tail thread 46 between the full bobbin 3f and the spindle 39. Therefore, this cutting is performed with one rotation of the blade 14.
Since the rotation is as described above, hold it in your mouth so as to pull in the stretched tail thread 46 and cut it securely (
Figure 9H).

When the tail thread 46 is cut, the doffing bar 3 descends to 1
Next, after swinging greatly to the (+> side), it descends a little and inserts the full bobbin 37 it is gripping into the beng 11 of the peg tray 10, and then rises slightly and returns to the standby position (Fig. 9) ,In addition.

In the above method, when inserting the empty bobbin 36 into the spindle 39, the head of the empty bobbin 36 may be held down by the pipe gripping device 4, but instead of this, the dotting bar 3 may be moved to the special position. Prior to the return operation, the tube gripping device 4 of the dotting bar 3 may be moved again onto the head of the empty bobbin 36 inserted into the spindle 39, and the tube gripping device 4 may press down the head of the empty bobbin 36.

With the above steps, one cycle of tube change operation is completed, and the spinning machine 1
At this time, the ring rail 40 is near the lower end of the empty bobbin 36 as shown in Figure 9, and winding cannot be done in this state, so the ring rail 40 must be raised a little before restarting. The restart is performed, and as a result of this rise, the spinning yarn 41 stretched between the spindle 39 and the traveler 48 in the state shown in Fig. 9 approaches the empty bobbin 36 in a manner substantially along the outer circumferential surface of the empty bobbin 36, and is restarted. At startup, this part becomes the webbing 42A shown in step eyh and is wound, and as described above, this webbing 42A is cut by a cutter for cutting the webbing when the amount of winding reaches a predetermined amount. 1
3. Further, the cut end of the tail thread 46 connected to the spindle 39 (the part hooked on the spindle 39 and the antinode ring 17 in FIG. 9I) is loosened by the rotation of the spindle 39 and scattered as fluff.

In the above embodiment, the cutter 12 for cutting the tail threads was described as one that sequentially cuts the stretched tail threads 46 while running along the spindle row, but the implementation of the present application is not limited to this. Alternatively, a cutter such as scissors or a knife may be provided corresponding to each spindle 39 and act independently or in conjunction with each other to cut the tail threads 46 sequentially or simultaneously. The same applies to

For example, as shown in Japanese Unexamined Patent Application Publication No. 1-2080, even if the device acts independently, the purpose of the present application is achieved, and the point is that it can cut the tail thread 46 and the webbing thread 42A at a predetermined position at a predetermined time. If so, the configuration does not matter.

Effects of the Invention As detailed above, in the present application, the tail thread of a full bobbin extracted from the spindle is temporarily deposited in the deposit peg without cutting it, so that the loop winding on the spindle is passed through the anti-node ring from the spindle. Due to the tension of the tail thread connected to the full bobbin, an empty bobbin can be inserted into the spindle in this state, and the tail thread can then be cut, without requiring a hooking tool or causing the loop to come off like in conventional devices. Since this process is adopted, there is no possibility that the loop will come off due to shock when the tail thread is cut, and the thread is securely secured and no thread breakage occurs.

Furthermore, in the present method, when the bobbin on the spindle reaches a predetermined winding amount, the yarn is cut, the loop winding from the previous change is used as the remaining yarn, and a hooking device is required on the spindle as described above. Due to the effects of both the above and the above, the removal of the remaining thread when unloading a full bobbin is carried out reliably each time.
without remaining on the spindle or getting tangled in the spinning yarn.

It does not interfere with the opening work in the winder process that will be performed later.

Finally, another advantage of the present method is that, as is clear from the above description, it can be easily implemented on existing machines.

[Brief explanation of drawings]

The drawings show the embodiment of the present application, and FIG. 1 is a schematic front view of the spinning machine, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a sectional view taken along the line ■-■ of FIG. Front view of the cutter seen from the spinning machine side,
Fig. 5 is a partial view showing the full bobbin being removed, Fig. 6 is a partial view showing the ring rail in the raised state with a quintile, and Fig. 7
The figures show a conventional spindle, FIG. 8 is a sectional view of an empty bobbin, and FIG. 9 A-I is an explanatory view of the operation. DESCRIPTION OF SYMBOLS 1... Spinning machine, 2... - Simultaneous pipe change device, 3... Dotting bar 7... Depositing bed, 12... Cutter for cutting the tail thread, 13... Cutter for cutting the cord 36・
... Empty bobbin, 37... Full bobbin, 39... Spindle, 42... Loop winding, 42A... Thread, 43.
... body wrap, 44... butt wrap, 46... butt thread

Claims (1)

[Scope of Claims] 1. A spinning machine, etc. that performs bodice winding and tail winding when the bobbin on the spindle becomes full, unwinds the tail thread as the full bobbin is removed, and performs loop winding on the spindle to change the tube. In simultaneous tube change, when the amount of winding reaches a predetermined amount, the process of using a cutter to cut the continuous yarn between the spindle and the bobbin being wound while the spinning machine is in operation, and the bobbin on the spindle becomes full. When this happens, the machine is stopped, the full bobbin is removed from the spindle and inserted into the deposit peg, and the empty bobbin held by the tube holding device attached to the spinning machine is removed and the empty bobbin is inserted into the spindle. A process of pressing down the loop winding, a process of removing the full bobbin inserted in the deposit peg, and cutting the tail thread connected between the spindle and the full bobbin with a cutter before inserting the full bobbin into the tube holding device. A simultaneous tube change method for spinning machines, etc.