JP3006781B2 - Ring spinning machine lift length changing device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lift length changing device in a ring spinning machine.

[0002]

2. Description of the Related Art When spinning yarn in a ring spinning machine,
The traveler corresponding to the count is used. The thick-counter traveler is larger than the fine-counter traveler among the 30-counter and larger, and is heavy, so that the sliding resistance against the ring is large.
For this reason, for the purpose of suppressing the wear of the traveler, the spindle rotation speed lower than that during the fine spinning is selected as the machine base maximum rotation speed. In the case of a thick yarn, the difference in height between the upper end and the lower end of the bobbin wound on the bobbin, that is, the lift length is increased in order to increase the winding amount of one bobbin. Also,
In ring spinning machines, thread breakage due to excessive ballooning at the beginning of winding often poses a problem.However, in heavy counts, the lift length is increased as described above due to the heavy traveler and the inability to increase the spindle speed. Because
Even if the distance between the ring rail position at the start of winding and the snail wire is relatively large, excessive ballooning is unlikely to occur.

On the other hand, since the traveler is light in medium and fine counts, the maximum number of revolutions can be selected to be considerably higher than in spinning thick counts.
It is often spun on ultra high-speed spinning machines exceeding pm.
However, in such an ultra high-speed spinning frame, the distance between the ring rail position and the snail wire at the start of winding is set shorter than that in the case of a thick count, so that excessive baluning at the start of winding is prevented.

[0004]

By the way, in a ring spinning machine, a chase and a shaper feed are repeated from a fixed starting position where a ring rail is fixed to reach a predetermined full height position so that a thread is formed. As it is formed, the above-mentioned lift length is fixed to correspond to the count. In the spinning machine having a fixed lift length as described above, various problems occur when trying to meet the recent needs for high-mix low-volume production.

For example, in a machine such as an ultrahigh-speed spinning machine, in which the lift length is fixed to a short one for medium and fine counts,
Consider the case of spinning thick yarn. Spindle rotation can be easily changed by an inverter or the like in recent spinning machines. Therefore, even if the spindle rotation speed is set to a low speed for thick count, the time from the beginning of winding to full filling is small due to the short lift length. As in the case of spinning at high speed, the full length of one spinning machine is processed in a winder designed to process the full length of the tube corresponding to a considerably long full time even at ultra high speed rotation. The time is shorter than the time required for the operation, and there is a problem that the processing cannot be performed by the winder.

On the other hand, in a spinning machine in which the lift length is set to a large value for a thick count, if the spindle is rotated at an extremely high speed when spinning a medium or fine count, yarn breakage is likely to occur due to excessive ballooning. Is reduced.

To solve such a problem, a solution has been proposed in which the lift length is changed in accordance with the spindle rotation speed (spinning speed). May be changed. As a technique for changing the position of the ring rail, for example, there is a technique disclosed in Japanese Utility Model Laid-Open No. 1-149475. In this technology, a clutch that turns on and off the transmission of power from the roller part is provided in a motion transmission unit that performs the vertical movement of the ring rail in synchronization with the rotation of the roller part, and a ring rail drive system is provided on the ring rail side from the clutch. It is provided with a forward / reverse rotatable motor for driving, and a manual switch for raising and lowering the ring rail supporting the operation of the clutch and the motor, respectively. At the time of restart after the occurrence of a common thread break, operate the manual switch for raising or lowering to move the ring rail up and down independently by the forward / reverse rotation motor, visually check its height position, and stop the ring rail. is there.

In this technique, the height position of the ring rail can be adjusted. However, since the height position is visually checked, the operator cannot leave the place until the height position change is completed. Workability decreases. In addition, there is a problem in that the elevation position varies due to visual recognition, and the lift length varies when the lift amount is changed, leading to a variation in the amount of thread wound.

[0009]

SUMMARY OF THE INVENTION The present invention solves a problem that occurs when a conventional ring rail position adjusting device is employed, and has a good operability and a lift length that is free from variations in lift length when the lift length is changed. In order to obtain a change device, a ring spinning machine capable of changing the spindle rotation is provided with a shaper feed motor for feeding the ring rail independently of the rotation of the draft part and a predetermined reference lift length of the ring rail. Input means for inputting the correction length of the lift length, storage means for storing the correction length, and change command means for the lift length, when there is a change command, from the start of machine operation to the completion of the first chase The shaper feed motor sends an ascending signal to raise the ring rail by the correction length from the winding start position of the ring rail at the time of the reference lift length. Characterized by comprising a force control system.

[0010]

When a lift length shorter than the reference lift length is set, a correction length of the lift length is input to the control device and stored. Next, when there is a command from the lift length change command means, a lift signal is output to the shaper feed motor from the winding start position of the ring rail having the reference lift length by the stored correction length. In response to this rise signal, the shaper feed motor automatically raises the ring rail exactly by the correction length. Therefore, by setting the reference lift length to a long lift length for a thick count, a single spinning machine can accurately and automatically set a long lift length for a thick count and a short lift length for medium and fine counts. Can be changed to

[0011]

FIG. 1 shows a spindle 1 of a spinning machine.
The main motor 2 controlled by a well-known inverter device 8 is rotated at a variable speed via the chin pulley shaft 3 and the like. The main motor 2 drives the front roller 5, the middle roller 6, and the back roller 7 of the draft part 4 to have a predetermined draft ratio.

The ring rail 10 is a lifting pillar 1
1, the lower end of the lifting pillar 11 is connected to one end of the lifting tape 12. The other end of the lifting tape 12 is connected to a lifting roller 14 integrally attached to a ring rail elevating shaft 13. Another roller 15 is attached to the ring rail elevating shaft 13.
The other end of a lifting tape 16 having one end fixed to the roller 15 is fixed to a lifting drum 19 via a guide roller 18 which is rotatable in the middle of a lifting lever 17.

The lifting drum 19 is rotatably supported on a rotating shaft 20 as shown in FIGS. 2 and 3. One end of a swinging tape 30 is fixed to the outer periphery of the lifting drum 19 separately from the lifting tape 16. A locking pin 32 is implanted on one side of the lifting drum 19. The locking pin 32 can be brought into contact with the locking lever 31 keyed to the rotating shaft 20. When the locking pin 32 is at the position Y1 in FIG. 2, the ring rail 10 is located at a tail winding position (winding start position) P1 described later, and the ring rail 10 is positioned at a correction length L described later.
When the lock pin 32 is located at the position P2 raised from the tail winding position P1 by two, the locking pin 32 is at the position Y2.

The other end of the swinging tape 30 is connected to a swinging end of a swinging lever 37 which is in pressure contact with a swinging cam 36 rotated by a swinging motor 35. Accordingly, when the swing lever 37 swings, the lifting drum 19 is rotatable around the rotation shaft 20 so that the rotation shaft 20 does not rotate. On the contrary, the rotation shaft 20 rotates clockwise in FIG. Then, the locking lever 31 hooks the locking pin 32 and rotates integrally, so that the shaper feed by the shaper feed motor 43 described later is transmitted to the lifting drum 19, and the constant shaper feed is generated on the ring rail 10. It is. As described later, the shape of the swing cam 36 is changed during the rotation of the swing cam 36 by one rotation.
After the ring rail 10 has been lifted by a predetermined amount A from the winding start position (tail winding position) P1 of the ring rail 10 at the reference lift length L set in advance in this spinning machine as shown in FIG. That it is formed so as to be lowered by an amount is the same as the conventional case.

The base end of the lifting lever 17 is
It is swingably supported around the rotation shaft 20. The tip of the lifting lever 17 is pressed against the heart cam 21.
The heart cam 21 is rotated by a drive system of the front roller 5 via a pulley 22, a chain 23, a clutch 24, and a gear pair 25, so that a chase is provided to the ring rail 10. The rotation of the heart cam 21 is detected by the encoder 26, and the rotation signal is input to a microcomputer 50 described later.

The drive system of the front roller 5 includes an appropriate drive system 2 on the lifting drum 19 side from the pulley 22.
6, the clutch 41 is connected. Clutch 41
Is further connected to a drive system 27 to rotate the shaft 29. The rotation of the shaft 29 is transmitted to the rotation shaft 20 via a gear pair 28. Axis 29
Is detected by the encoder 45 and input to the microcomputer 50. The drive system 27
A shaper-feeding clutch 42 is connected to the opposite side of the clutch 41 with the clutch 42 interposed therebetween. The clutch 42 is connected to a one-way shaper feed motor 43.

Next, the control device 50A will be described. The control device 50A includes a central processing unit 52, a ROM and a RAM.
And a keyboard 53 as input means connected to the microcomputer 50, and a changeover switch 55 as lift length change command means connected to the microcomputer 50. . An operation program based on the flowchart shown in FIG. 5 is stored in the storage unit 51, and the clutch 42 outputs an ON signal from the start of operation to the full load, and outputs an OFF signal when the ring rail 10 descends after the full load. The clutch 41 outputs a control signal to perform the reverse operation (steps S1 and S10). When one rotation of the heart cam 21 is detected by the encoder 26 at the time of forming the bobbin (that is, when one chase ends), a shaper feed command is sent to the shaper feed motor 43 so as to rotate the lifting drum 19 by a predetermined fixed amount. The data is output (steps S7 and S8). At a predetermined timing, a command to rotate the swing motor 35 once is output (step S4), and a start command is output to the main motor 2 when a timer that operates from the start of the operation of the swing motor 35 expires. (Steps S5 and S6).

From the keyboard 53, a reference lift length L (FIG. 4, the winding start position is the tail winding position P1) given as a mechanical specification with respect to the reference spindle speed of the spinning machine, The difference from the short lift length L1 corresponding to the spindle rotation speed higher than the reference spindle rotation speed, that is, the lift length correction length L2 is input together with the high-speed spindle rotation speed and stored in a predetermined memory area 54 in the RAM. . In this embodiment, the reference spindle speed 1 is 15,000
rpm, the standard lift length L is 7 inches, which corresponds to the thick count in the standard condition. At this time, the correction table L2 is set to 1 inch, the lift length L1 is set to 6 inches, and the high-speed spindle rotation speed is set to 20,000 rpm. Thus, the medium and fine count can be made to correspond. It goes without saying that the correction length of the lift length can be set to an optimum value with respect to the reference lift length L in relation to the spindle rotation speed. And changeover switch 5
When 5 is on the lift length changing side 55a, a lift signal for lifting the ring rail 10 by the correction amount L2 is output to the shaper feed motor 43 (step S).
2, S3).

Next, the operation will be described. As mentioned above, the standard specification of the spinning frame is 7 inches as the standard lift length for thick count,
It is assumed that the spindle rotation speed is 15,000 rpm, and a changeover for spinning the medium and fine counts is planned. As described above, the correction length L2 (1 inch) of the lift length and the spindle rotation speed (20,000 rpm) at this time are input. First, when spinning a thick count, the changeover switch 55 is set to the standard side 55b. Thus, when the operation is started, the operation is performed according to steps S1, S2, S4 to S10 in the flowchart of FIG.
When the locking pin 32 is rotated clockwise from the position Y1, the ring rail once rises by the length A from the tail winding position P1, and after a lapse of time T, a timer (not shown) starts counting at the rising end. When the main motor 2 is started up, a chase is generated by the heart cam 21 while the ring rail 10 is descending, and the rise of the chase and the swinging down movement of the ring rail 10 are combined to ascend and descend as shown in FIG. At the end of the chase (point B1), the vehicle descends almost to the butt winding position P1. Thereafter, the yarn spun from the front roller 5 is fed to the bobbin B while repeating the shaper feed by the shaper feed motor 35 and the chase by the heart cam 21.
When the tube is fully wound, the connection state of the clutches 41 and 42 is switched to lower the ring rail 10 from the rising end P3 to the tail winding position P1 and stop. In such winding, the lift length is the reference lift length (7 inches).
Compared to winding a thick count with a short lift length for ultra high speed,
The time from the beginning of winding to the full filling becomes longer.

Next, when the setup is changed to a small number, the changeover switch 55 is set to the lift length changing side 55a. When the operation is resumed, there is a lift length change command, so that step S in the flowchart of FIG.
Step S3 is performed between S2 and S4. That is, in step S3, a correction rotation command is output to the shaper feed motor 43, and the shaper feed motor 43
In the clockwise direction (ring rail 10
(The same direction as the shaper feed). The ring rail 10 is at the tail winding position P1 by the tail winding before the setup change, and the locking pin 32 is also at the position Y1, so that the rotation of the shaper feed motor 43 causes the locking lever 31 to rotate clockwise, The locking lever 31 hooks the locking pin 32, rotates the lifting drum 19 clockwise, and when the encoder 45 detects the rotation of the shaft 29 corresponding to raising the ring rail 10 by the correction amount L2, the rotation is detected. Stopped. At this time, the swinging tape 30 is loosened with the swinging lever 37, and the locking pin 32 is
At the position Y2 while being locked with the locking lever 31 indicated by the two-dot chain line.

After the ring rail 10 has thus risen more precisely by the correction length L2 than when the lift length is 7 inches, the swing motor 35 is started, and the swing tape 30 is pulled this time. When the slack generated by the correction of the lift length is absorbed, the lifting drum 19 further rotates clockwise to temporarily stop and lower the ring rail 10 at the position raised by the length A in the same manner as described above. Then, the main motor 2 is started, the spindle 1 is rotated at a very high speed, and the swinging down and the rising of the heart cam 21 are combined to form the up / down locus of the ring rail 10 as shown in FIG. At the end of the first chase B2, the locking pin 32 is slightly rotated clockwise from the position shown by the two-dot chain line in FIG. At a position slightly rotated clockwise from Y2, the locking lever 31 is locked,
As a result, the pipe thread is substantially formed from the position where the ring rail 10 has risen from the tail winding position P1 by the correction length L2, and is wound up to the rising end P3. Then, when the tube is full, the ring rail 10 is lowered from the rising end P3 to the tail winding position P1, and the tail winding is performed and stopped. As described above, when winding a fine yarn at an ultra-high speed, the lift length can be shortened, so that yarn breakage due to ballooning can be prevented. Since the spinning conditions and the lift length are maintained unless the changeover switch 55 is switched, the operator does not have to reset the lift length every time the doffing is performed.

In the present embodiment, one kind of correction length data is provided. However, some predetermined correction length data and spindle rotation speed are stored in the control device, and are switched. Is also good. In addition, in the present embodiment, when the lift length is changed, the lift is lifted from the lower position of the reference lift length.
The shaper feed motor 43 may rotate in one direction. Further, although the changeover switch 55 is provided externally, the operation program may be provided with a lift length change instruction means so as to determine whether the correction length is set in the storage means. The lift length correction operation by the shaper feed motor may be performed in the period M in the first half of the swing by the swing motor, for example, as shown in FIG.
At the end of the chase, the ring rail almost returns to the winding start position, so that the lift length of the ring rail may be corrected by the end of this one chase.

[0023]

As described above, in the present apparatus, when it is desired to make the lift length shorter than the reference lift length, the operator only instructs the change of the lift length from the lift length change command means. The shaper feed motor only automatically raises the ring rail from the lowering position of the reference lift length by the pre-input and stored correction length, and the operator may not be present until the lift length change operation is completed. Workability is improved. In addition, since it does not rely on the visual observation of the operator, the correction position of the ring rail becomes extremely accurate, and there is no variation in the lift length when changing the lift length.

Further, since the ring spinning machine has a variable spindle rotation speed, the reference lift length is set to a long lift length suitable for large-count spinning. If spinning at low speed for thick counts, the full filling time can be longer than when the lift length is fixed to a short value for medium and fine counts, and it can be well balanced with the processing time of Walinda . Furthermore, if spinning is performed at ultra-high speed as a short lift length corresponding to medium and fine count spinning, the occurrence of yarn breakage can be suppressed compared to the case where the lift length is fixed to a long value for thick count. It can be wound up properly.

[Brief description of the drawings]

FIG. 1 is an overall view showing a drive system of a ring spinning machine.

FIG. 2 is an enlarged view of a lifting drum.

FIG. 3 is a left side view of FIG. 2;

FIG. 4 is an explanatory diagram of a lift length.

FIG. 5 is a flowchart showing an operation program.

FIG. 6 is a diagram showing a ring rail elevating position at a reference lift length.

FIG. 7 is a diagram showing a ring rail elevating position when a lift length is corrected.

FIG. 8 is another embodiment.

[Explanation of symbols]

1 spindle, 2 main motor, 4 draft part, 8 inverter device, 43 shaper feed motor, 50A control device, 53 keyboard (input means), 54 memory area (storage means), 55 changeover switch (change command means), L reference Lift length, L2
Correction length

Continuing from the front page (72) Osamu Yoshida, 2-25-25 Kano Nagatobori, Gifu City (72) Masaaki Kuwahara 103, Nakagawara, Niikawa-cho, Nishi-Kasugai-gun, Aichi Prefecture Toyoda Industries Co., Ltd. 56) References JP-A-2-127526 (JP, A) JP-A-2-277828 (JP, A) JP-A-64-26726 (JP, A) JP-A-63-190030 (JP, A) Sho 62-206033 (JP, A) JP-A 1-149475 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) D01H 1/36

Claims (1)

(57) [Claims] 1. A ring spinning machine capable of changing the rotation of a spindle, comprising: a shaper feed motor for feeding a ring rail to a shaper independently of rotation of a draft part;
Input means for inputting a correction length of the lift length with respect to a predetermined ring rail reference lift length, storage means for storing the correction length, and lift length change command means,
When a change command is issued, a rising signal for raising the ring rail by the correction length from the winding start position of the ring rail at the reference lift length is output to the shaper feed motor from the start of the machine operation to the completion of the first chase. A lift length changing device for a ring spinning machine, comprising a control device.