JP3541727B2 - Single weight drive type multiple twisting machine - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a configuration of a single-spindle drive type multiple twisting machine in which a spindle motor is provided for each spindle and a rotating shaft of a winding motor is connected to a winding drum via a drive transmission mechanism including a speed reduction mechanism. The present invention relates to a configuration for maintaining the number of twists by a single spindle drive type multiple twisting machine at a set value with a simple configuration.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, there has been known a single spindle drive type multiple twisting machine in which a spindle motor is provided for each spindle, and a rotation shaft of a winding motor is connected to a winding drum via a drive transmission mechanism including a speed reduction mechanism.
In such a single spindle drive type multiple twisting machine, in order to monitor the number of twists by the single spindle drive type multiple twisting machine during processing, the rotation speed of the winding drum shaft supporting the winding drum is detected. In addition, the feedback control of the rotation speed of the winding motor that drives the winding drum shaft is performed based on the detection result of the rotation speed of the winding drum shaft.
[0003]
[Problems to be solved by the invention]
However, since the rotation of the winding motor is transmitted to the winding drum shaft after being reduced by the speed reduction mechanism, the rotation speed of the winding drum shaft is slow. Therefore, for example, a blade member having a large number of irregularities formed on the outer peripheral portion is fixed to the winding drum shaft, and a sensor that outputs a pulse signal in accordance with the irregularities of the blade member is provided close to the blade member. In the case of detecting the rotation speed of the winding drum shaft, the frequency of the pulse signal detected by the sensor is too low to perform the feedback control with high accuracy.
In order to perform the feedback control with high accuracy, it is necessary to attach an expensive encoder to the winding drum shaft to detect the rotation speed, and the device is complicated and expensive.
In view of the above, the present invention provides a single-spindle-drive type multiple twisting machine that enables highly accurate feedback control of a winding motor with a simple configuration and that can accurately maintain the number of twists at a set value. is there.
[0004]
[Means for Solving the Problems]
The present invention uses the following means in order to solve the above-mentioned problems in the single-spindle drive type multiple twisting machine. That is, in the first aspect, the spindle motor is provided for each spindle, and the rotating shaft of the winding motor is connected to the winding drum via a drive transmission mechanism including a speed reduction mechanism. A first rotation sensor that detects the rotation speed of the winding motor before being reduced by the reduction mechanism, a second rotation sensor that directly detects the rotation speed of the winding drum shaft of the winding drum, and a spindle motor. A third rotation sensor that detects the rotation speed, a winding motor control device that performs rotation control of the winding motor based on the rotation speed detected by the first rotation sensor, and a rotation speed that is detected by the third rotation sensor. and a control device for a spindle motor for controlling the rotation of the spindle motor, to maintain the rotational speed of the spindle motor to a set value by using the third rotation sensor with Te, the first rotating Sen Maintaining the rotation speed of the winding motor to a set value using.
[0005]
The take-up motor is configured such that a speed reduction mechanism is integrally attached to a motor portion continuously, a rotation shaft protrudes from the motor portion on the side opposite to the speed reduction mechanism, and the first shaft is protruded from a protruding portion of the rotation shaft. A rotation sensor was provided .
[0007]
BEST MODE FOR CARRYING OUT THE INVENTION
Embodiments of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a view showing a single-spindle drive type multiple twisting machine of the present invention.
[0008]
The schematic configuration of the single-spindle drive type multiple twisting machine of the present invention will be described. In the single-spindle drive type multiple twisting machine shown in FIG. 1, a large number of spindle devices SS are arranged in parallel, and a feed roller 8 and a winding device 13 are arranged above each spindle device S. Is established. A control box 14 for driving and controlling the single-spindle drive type multi-twisting machine is provided at one end of a large number of spindle devices S.
The spindle device S is provided with a spindle motor 7 for each weight, and the spindle motor 7 drives the spindle 1 to rotate. A yarn supply package 2 is statically supported on the spindle 1, and a yarn Y unwound from the yarn supply package 2 is guided from the top cap 3 into the spindle 1 and twisted under a predetermined tension. And is drawn out from the lower storage disk 4 to the outside.
[0009]
The yarn Y forms a balloon between the rotary disk 5 and the snell wire 6, is sent upward by a feed roller 8 via a guide roller (not shown), and is arranged downstream of the feed roller 8. It is guided to the winding device 13. The winding device 13 includes a winding drum 10, a winding package 11, a traverse guide 15, and the like. The yarn Y guided to the winding device 13 contacts the winding drum 10 and rotates. It is wound while being traversed by the traverse guide 15 on the package 11.
[0010]
Each of the feed rollers 8 is fixed to a feed roller shaft 56 so as to be rotatable integrally with the feed roller shaft 56, and each of the winding drums 10 is fixed to a winding drum shaft 58 and fixed to the winding drum shaft 58. And can be integrally rotated. Each traverse guide 15 is supported by a traverse rod 57, and one end of the traverse rod 57 is supported by a cam box 24 in the control box 14, and the traverse guide 15 and the traverse rod 57 are Can be integrally moved left and right.
[0011]
Next, a drive mechanism of the spindle device S, the feed roller 8, the winding drum 10 and the like in the single-spindle drive type multiple twisting machine will be described.
The take-up motor 23 disposed in the control box 14 includes a motor section 23a and a reduction mechanism section 23b. After the rotational driving force from the motor section 23a is reduced by the reduction mechanism section 23b, The output is output to an output shaft 23d protruding from the speed reduction mechanism 23b.
[0012]
A take-up gear 37 is fixed to the output shaft 23d of the take-up motor 23, a drive gear 39 is provided to the take-up drum shaft 58, and a drive belt 38 is provided between the drive gear 39 and the take-up gear 37. Is wound. A transmission belt 41 is wound around the transmission gear 40 fixed to the winding drum shaft 58 and the drive gear 42 fixed to the feed roller shaft 56.
Then, the rotational driving force from the winding motor 23 decelerated by the speed reduction mechanism 23b is transmitted to the winding drum shaft 58 via the drive belt 38 to drive the winding drum shaft 58, and the winding drum shaft The rotational driving force transmitted to 58 is further transmitted to the feed roller shaft 56 via the transmission belt 41 to drive the feed roller 8.
[0013]
A traverse gear 31 is fixed to the output shaft 23d of the winding motor 23, and the rotational driving force of the winding motor 23 is transmitted from the traverse gear 31 to the cam box 24 via the continuously variable transmission 26. Have been. Specifically, a belt 33 is wound around the traverse gear 31 and the input gear 32 of the continuously variable transmission 26, and the output gear 34 of the continuously variable transmission 26 and the input gear 36 of the cam box 24 are connected to the belt 33. The belt 35 is wound, and the rotational driving force from the winding motor 23 is input to the cam box 24 after being shifted by the continuously variable transmission 26.
Then, the traverse rod 57 and the traverse guide 15 move left and right integrally by the rotational driving force input to the cam box 24, and the yarn Y wound on the winding package 11 is traversed by the traverse guide 15. Because In addition, by operating the continuously variable transmission 26 during winding, the traverse speed is accelerated / decelerated regardless of the winding speed (the rotation speed of the winding drum 10), and ribbon winding on the winding package 11 is prevented. I also try to do it.
[0014]
A motor shaft 23c, which is a rotating shaft, protrudes from the motor portion 23a of the winding motor 23 toward the anti-deceleration mechanism 23b, and the blade member 20 is fixed to the motor shaft 23c, which is a protruding portion of the rotating shaft. . The blade member 20 is a gear-shaped member in which a large number of irregularities are formed at substantially equal intervals on the outer peripheral portion, and a first rotation sensor 18 such as a proximity sensor is provided near the outer peripheral portion of the blade member 20 for winding. The first rotation sensor 18 generates a pulse signal having a frequency proportional to the rotation speed of the blade member 20 which is equal to the rotation speed of the take motor 23.
The first rotation sensor 18 and the winding motor 23 are connected to a winding motor control device 22, and a pulse signal generated by the first rotation sensor 18 is input to the winding motor control device 22. The rotation speed of the winding motor 23 is controlled by the winding motor control device 22.
[0015]
Further, on the winding drum shaft 58, a blade member 19, which is a gear-shaped member having a large number of irregularities formed at substantially equal intervals on the outer peripheral portion, is fixed, and a second member is provided near the outer peripheral portion of the blade member 19. The rotation sensor 17 is provided so that the second rotation sensor 17 generates a pulse signal having a frequency proportional to the rotation speed of the blade member 19 equal to the rotation speed of the winding drum shaft 58. The second rotation sensor 17 is connected to the control device 21, and a pulse signal detected by the second rotation sensor 17 is input to the control device 21.
[0016]
Further, the spindle motor 7 is provided with a third rotation sensor 16, which detects the rotation speed of the spindle motor 7. The third rotation sensor 16 and the spindle motor 7 are connected to a spindle motor control device 25, and the rotation speed of the spindle motor 7 detected by the third rotation sensor 16 is input to the spindle motor control device 25, The rotation speed of the spindle motor 7 is controlled by the spindle motor control device 25.
Further, the control device 21 is connected to the spindle motor control devices 25, 25... And the winding motor control device 22.
[0017]
The rotation speed control of the winding motor 23 and the spindle motor 7 in the single-spindle drive type multiple twisting machine configured as described above will be described.
In the control device 21, the number of twists to be applied to the yarn Y is set in advance, and the target rotation speeds of the winding motor 23 and the spindle motor 7 are set in advance according to the number of twists.
The target rotation speed of the spindle motor 7 set in the control device 21 is transmitted to the control device 25 for the spindle motor via a communication line, and the control device 25 for the spindle motor receives the data of the received target rotation speed and the third rotation speed. The rotational drive of the spindle motor 7 is controlled according to the rotational speed detected by the sensor 16. That is, the third rotation sensor 16 detects the actual rotation speed of the spindle motor 7 that is rotationally driven and controlled by the spindle motor control device 25. This detected value is input to the spindle motor control device 25 and further transmitted to the control device 21 as the current rotational speed.
[0018]
On the other hand, the target rotation speed of the winding motor 23 set in the control device 21 is sent to the winding motor control device 22, and the winding motor control device 22 receives the data of the received target rotation speed and the first rotation speed. The motor section 23a of the winding motor 23 is rotationally controlled in accordance with the number of rotations detected by the sensor 18. That is, the first rotation sensor 18 detects the actual rotation speed of the winding motor 23 that is rotationally controlled by the winding motor control device 22. This detected value is input to the take-up motor control device 22 and further sent to the control device 21.
Since the number of rotations of the winding motor 23 is proportional to the winding speed of the yarn Y wound on the winding package 11 that rotates in contact with the winding drum 10, the winding motor 23 input to the control device 21 is used. Is converted into a winding speed of the yarn Y in the control device 21.
[0019]
Here, when the single-spindle-drive type multiple twisting machine is configured as, for example, a multiple twisting machine that twists n times while the spindle 1 makes one rotation, the number of twists applied to the yarn Y is represented by the following formula (1). Can be represented by
(Number of twists) = (number of spindle rotations × n) / (winding speed) (1)
[0020]
Therefore, in the present embodiment, the rotation speed of the spindle motor 7 is maintained at a set value using the third rotation sensor 16, and the rotation speed (winding speed) of the winding motor 23 is adjusted using the first rotation sensor 18. By maintaining at the set value, the number of twists is maintained at the set value.
[0021]
As described above, the rotation speed of the winding motor 23 before being reduced by the reduction mechanism 23b is detected by the first rotation sensor 18, and the rotation speed detected by the first rotation sensor 18 is fed back to the control device 22. , The rotation of the winding motor 23 is controlled.
As described above, by detecting the rotation speed of the winding motor 23 in a high-speed state before deceleration, a large number of pulse signals can be generated by a simple configuration such as the blade member 20 fixed to the motor shaft 23c and the first rotation sensor 18. This can be generated and detected, and the feedback control can be performed with high accuracy.
[0022]
Further, the first rotation sensor 18 is configured to detect the rotation speed of the winding drum shaft 58 via a drive transmission mechanism such as a drive belt 38, but in the single-spindle drive type multiple twisting machine, As described above, the second rotation sensor 17 that directly detects the rotation speed of the winding drum shaft 58 without using the drive transmission mechanism is provided separately from the first rotation sensor 18.
[0023]
When the rotation speed of the take-up drum shaft 58 is detected by the first rotation sensor 18 provided at the motor shaft 23c of the take-up motor 23, the drive belt 38 may break or the speed reduction mechanism 23b may break down. When there is an abnormality in the drive transmission mechanism, the rotation speed of the winding drum shaft 58 cannot be accurately detected. However, the second rotation sensor 17 that directly detects the rotation speed of the winding drum shaft 58 does not detect the rotation speed. It is possible to accurately detect the rotation speed of the drum shaft 58.
An abnormality in the drive transmission mechanism such as a belt breakage can be detected, for example, by monitoring the load current of the motor 23 and detecting a change in the load current or an abnormality in the rotation speed detected by the second rotation sensor 17.
[0024]
The take-up motor 23 is constructed by integrally attaching a speed reduction mechanism 23b continuously to the motor 23a. The rotation shaft 23c protrudes from the motor 23a on the side opposite to the speed reduction mechanism 23b. Since the first rotation sensor 18 is provided in the portion (2), the driving mechanism of the winding drum shaft 58 and the like including the winding motor 23 can be made compact.
[0025]
【The invention's effect】
The present invention has the following effects by adopting the above-described configuration in the single-spindle drive type multiple twisting machine. First, according to claim 1, in a single spindle drive type multiple twisting machine in which a spindle motor is provided for each spindle, and a rotation shaft of the winding motor is connected to a winding drum via a drive transmission mechanism including a speed reduction mechanism. A first rotation sensor that detects the rotation speed of the winding motor before being reduced by the reduction mechanism, a second rotation sensor that directly detects the rotation speed of the winding drum shaft of the winding drum, and a spindle motor. A third rotation sensor that detects the rotation speed, a winding motor control device that performs rotation control of the winding motor based on the rotation speed detected by the first rotation sensor, and a rotation speed that is detected by the third rotation sensor. and a control device for a spindle motor for controlling the rotation of the spindle motor Te, while maintaining the rotational speed of the spindle motor to a set value by using the third rotation sensor, the first rotation sensor Because maintaining the rotational speed of the winding motor to a set value you are,
It is possible to detect the rotation speed of the winding motor in a high-speed state before deceleration, and for example, by using a simple configuration such as a blade member and a first rotation sensor fixed to the rotation shaft of the winding motor, a large number of pulse signals can be detected. By causing the rotation, the rotation speed can be detected with high accuracy, the feedback control can be performed with high accuracy, and the number of twists can be accurately maintained at the set value.
The rotation speed of the spindle motor 7 is maintained at a set value using the third rotation sensor 16, and the rotation speed (winding speed) of the winding motor 23 is maintained at the set value using the first rotation sensor 18. Thereby, the number of twists can be maintained at the set value.
Furthermore, even when the rotation speed of the winding drum shaft cannot be accurately detected by the first rotation sensor such as when there is an abnormality in the drive transmission mechanism, the rotation speed of the winding drum shaft is detected by the second rotation sensor. Can be accurately detected.
[0026]
Further, as in claim 2, the take-up motor is configured such that a speed reduction mechanism is integrally attached to the motor portion continuously, and a rotation shaft protrudes from the motor portion on the side opposite to the speed reduction mechanism. Since the first rotation sensor is provided on the protruding portion, it is possible to make the drive mechanism such as the winding drum shaft including the winding motor compact.
[Brief description of the drawings]
FIG. 1 is a diagram showing a single-spindle drive type multiple twisting machine of the present invention.
[Explanation of symbols]
S Spindle device Y Thread 7 Spindle motor 8 Feed roller 10 Drive drum 11 Winding package 13 Winding device 16 Third rotation sensor 17 Second rotation sensor 18 First rotation sensor 19/20 Blade member 21 Controller 22 Winding motor Control device 23 take-up motor 23a motor portion 23b reduction mechanism portion 23c motor shaft 25 spindle motor control device

Claims (2)

In a single spindle drive type multiple twisting machine in which a spindle motor is provided for each spindle and the rotation axis of the winding motor is connected to the winding drum via a drive transmission mechanism including a speed reduction mechanism,
A first rotation sensor for detecting the rotation speed of the winding motor before being reduced by the reduction mechanism, a second rotation sensor for directly detecting the rotation speed of the winding drum shaft of the winding drum, and a spindle motor. A third rotation sensor that detects the rotation speed of the winding motor, a winding motor control device that performs rotation control of the winding motor based on the rotation speed detected by the first rotation sensor, and a rotation speed detected by the third rotation sensor. A spindle motor control device that performs rotation control of the spindle motor based on the
A single-spindle-drive type multi-twist yarn, wherein the rotation speed of the spindle motor is maintained at a set value using the third rotation sensor and the rotation speed of the winding motor is maintained at the set value using the first rotation sensor. Machine. The take-up motor is configured such that a speed reduction mechanism is integrally attached to a motor unit continuously, a rotation shaft protrudes from the motor unit on a side opposite to the speed reduction mechanism, and the first rotation sensor is provided on a protruding portion of the rotation shaft. The single-spindle drive type multiple twisting machine according to claim 1, further comprising:

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