JP3147820B2 - Spinning winder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spindle drive type spinning machine in which a bobbin holder is driven to rotate, and the number of revolutions of the bobbin holder is controlled by the peripheral speed of a contact roller which comes into contact with the bobbin mounted on the bobbin holder. Regarding the machine.

[0002]

2. Description of the Related Art A yarn winding machine winds a yarn spun from a spinning machine onto a winding tube mounted on a bobbin holder to form a package. This spinning winder includes a friction drive type that rotationally drives a friction roller that rolls on a bobbin (a generic name including a winding tube and a package) and a spindle drive type that rotationally drives a bobbin holder. In the case of the spindle drive type, the spinning is spun from the spinning machine at a predetermined speed, but the diameter increases as the package is formed, so that the rotation speed of the bobbin holder is controlled to decrease accordingly. There is a need.

In order to control the number of rotations of the bobbin holder, the bobbin holder comes into contact with the bobbin and rotates.
A contact roller for applying a predetermined contact pressure and detecting a peripheral speed is used. The peripheral speed of the package is determined by detecting the rotational speed of the contact roller, and the peripheral speed is compared with the set speed to control the rotational speed of the bobbin holder.
Keep the winding speed of the package constant. However, in this spindle drive type spinning winder, the contact roller that comes into contact with the bobbin slips,
It is necessary to control the number of rotations of the bobbin holder in anticipation of this slippage. However, in high-speed winding, the slippage is large and the slippage itself tends to fluctuate. When slippage occurs, the operation is based on the peripheral speed of the contact roller, so that the peripheral speed is detected to be slower than the actual speed, and the yarn is pulled and winded slightly, so that the winding tension increases and the bulge and the like are increased. This may cause package shape defects.

[0004] Therefore, auxiliary driving of the contact roller using a driving motor is performed. As the contact roller driving motor, an induction motor whose output frequency is changed by an inverter and which is rotationally driven at a rotational speed proportional to the output frequency is generally used.

[0005] Wind loss, mechanical loss, braking force received from the bobbin holder, and the like are applied to the contact roller that comes into contact with and rotates with the bobbin mounted on the bobbin holder. Therefore, the contact roller does not have a peripheral speed determined by the rotation speed of the induction motor corresponding to the output frequency sent from the inverter, but is slightly delayed. Therefore, when the contact roller and the bobbin mounted on the bobbin holder are brought into contact with each other to wind the yarn at a high speed, the output frequency of the inverter is set to
The output frequency for driving the induction motor at a predetermined number of revolutions is set to be 0.5 to 2% larger than the output frequency, so that the peripheral speeds of the contact roller and the bobbin mounted on the bobbin holder match.

[0006]

By the way, the operation mode of the spinning winder is not only for high-speed winding, but also for changing the bobbin holder such as bobbin change (at the time of changing the yarn).
The contact roller is rotatably driven in a free non-contact state away from the bobbin mounted on the bobbin holder,
At the time of threading at the beginning of operation, the operation is performed at a low speed. Therefore, if the output frequency of the inverter is merely increased by a predetermined value of 0.5 to 2%, there is a problem that the peripheral speed of the contact roller becomes too fast when the bobbin holder is replaced or when the yarn is threaded at a low speed.

Therefore, when the contact roller and the bobbin mounted on the bobbin holder are not in contact with each other, such as when the bobbin holder is replaced, a predetermined peripheral speed is set based on the output of a sensor for measuring the peripheral speed of the contact roller. In addition, a spinning winder provided with a motor control device that performs feedback control of a contact roller drive motor has been proposed. However, there is a problem that the control becomes complicated because the condition of the feedback control changes every time the operating state is switched.

Accordingly, there has been proposed a motor control device which individually sets the output frequency when the bobbin holder is replaced at the time of high-speed winding by theoretical calculation. However, since the output frequency when the operating state changes is determined by theoretical calculation, there has been a problem that the contact roller cannot be accurately driven at a peripheral speed suitable for the operating state.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to provide an auxiliary contact roller which rotates in contact with a bobbin mounted on a bobbin holder. It is an object of the present invention to provide a take-up winder capable of appropriately adjusting the peripheral speed of the contact roller in accordance with various operation modes of the take-up winder.

[0010]

Means for Solving the Problems According to a first aspect of the present invention, there is provided a bobbin holder driven by a motor, a contact roller contacting a bobbin mounted on the bobbin holder, and a contact roller. A motor control device that sends control values to a contact roller drive motor that drives the rollers, and
The take-up side bobbin holder and standby side bobbin holder
Between the take-up bobbin holder and the standby bobbin holder.
The motor control device is configured such that when the contact roller and the bobbin are not in contact with each other, the peripheral speed of the contact roller is substantially equal to the yarn speed at the time of yarn winding.
The self- detection of the control value at the time when the predetermined peripheral speed is reached as the control reference value, and the bobbin mounted on the take-up bobbin holder
Take-up bobbin holder and standby bobbin when
Control value when replacing the holder with the control reference value.
Control value at the time of winding the yarn based on the control reference value.
A spinning winder characterized in that it is configured to determine and control a contact roller drive motor.

[0011] The invention according to claim 2 is based on claim 1.
In this case, thread hooking is performed at a lower speed than
First take-up bobbin holder and standby bobbin after low-speed threading
Contact roller when replacing the bin holder
When the bobbin is not in contact, the peripheral speed of the contact roller
The control is performed so as to substantially match the yarn speed at the time of picking.
A reference value is detected .

[0012] The invention according to claim 2 is based on claim 1.
At a low speed , the yarn winding is performed at a high speed.
The control reference value is set to
The bobbin in a non-contact state, and
Control value when the peripheral speed of the contact roller becomes lower than
Is detected as the control reference value at low speed, and
Control value when the peripheral speed of the contact roller becomes high
Is detected as a high-speed control reference value .

[0013]

[0014]

[0015]

[0016]

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a device block diagram showing a spinning winder of the present invention together with a motor control device.

In FIG. 1, the spinning winder winds a large number of yarns at the same time in parallel. For simplicity, only the winding of four spinning yarns will be described. The spinning winder supports a turret plate 2 rotatably around a center axis 3 on a main body frame 1, and two bobbin holders BH1 and BH2 are rotatably protruded from the turret plate 2 and are located at a winding position. The device structure is such that the contact roller CR rolls with a predetermined contact pressure on a package P formed by winding the spinning yarn Y on the bobbin B inserted into the bobbin holder BH1.
In the state of FIG. 1, BH1 is a winding-side bobbin holder, and BH2 is a standby-side bobbin holder.

A gear member 9 is provided at the end of the contact roller CR.
And a sensor S for reading the teeth of the gear member 9 is provided. The elevating frame 4 on which the contact roller CR is rotatably protruded can be moved up and down along the guide rod 10, and a predetermined contact pressure is applied to the package by the difference between the lifting force of the contact pressure cylinder 11 and the own weight of the contact roller CR and the like. It has a structure that can be added to P.

Each of the two bobbin holders BH1, BH2 is an induction motor (bobbin holder driving motor) IM1, IH
It is rotationally driven by M2. Induction motor IM1, IM
2, an inverter INV1, which outputs a predetermined output frequency,
INV2 is controlled by the control box CB.
The rotational speed of the contact roller CR is detected by the sensor S, and the rotational speed of the induction motor IM1 of the bobbin holder BH1 at the winding position is controlled so that the rotational speed (peripheral speed) of the contact roller CR is constant. As the winding becomes thicker, the rotation speed of the induction motor IM1 decreases.

Here, the inverter INV3 and the control box CB constitute a motor control device for the induction motor IM3, which is a contact roller driving motor, and include the sensor S, the induction motors IM1, IM2, and the inverter INV1,
The INV2 and the control box CB constitute a winding control device. The control box CB has a CPU
The microcomputer device incorporates a program for controlling the motor control device and the winding control device.

In particular, with respect to a motor control device for a contact roller drive motor, a control reference value detecting means 51, a correcting means 52, and a setting device 53 for the correcting means 52 are provided. The control reference value detecting means 51 detects and outputs a control value when the peripheral speed of the contact roller reaches a predetermined peripheral speed in a state where the contact roller and the bobbin are not in contact with each other as a control reference value and outputs the control reference value. . Usually, the predetermined peripheral speed is set to a speed substantially corresponding to the yarn speed. However, in some cases, the predetermined peripheral speed is further set to the peripheral speed of the contact roller required at the time of low-speed yarn threading, or to another speed. It is also possible to set. When the predetermined peripheral speed is set to a speed substantially corresponding to the yarn speed, a high-speed control reference value is detected. When the predetermined peripheral speed is set to the peripheral speed of the contact roller required at the time of low-speed threading, the low-speed control reference value is detected. The value is detected. The correcting means 52 outputs a control value at the time of winding the yarn by multiplying the high-speed control reference value by a correction coefficient or adding or subtracting a correction value to or from the high-speed control reference value. Normally, by outputting a control value at the time of yarn winding obtained by multiplying the control reference value by a correction coefficient of 1.0 to 1.03,
The contact roller is driven with a slight overfeed.
The setting unit 53 enables the correction coefficient or the correction value to be changed. However, the correction coefficient or the correction value may be stored in the motor control device as a fixed value in advance.

Next, an example of control of the motor control device by the control box CB having the above-described functions will be described with reference to FIG. FIG. 2A shows the peripheral speed of the contact roller, and FIG. 2B shows the output frequency from the inverter.

In FIG. 2, a section t1 to t2 shows a time when the peripheral speed of the contact roller is lower than the time of winding the yarn by V2, and a section t3 to t4 shows a discard winding section of the high speed V3 (winding of the unusable bobbin). Section). These sections t1 to t4
Is the first operating period of the spinning winder, during which time
The control reference value detecting means 51 does not work. These sections t1
From t2 to t3 to t4, the output frequency of the inverter IV3 is set to the initial values f2 and f3, and the induction motor IM3
Is the peripheral speed V2 corresponding to the initial values f2 and f3. , V3
Driven by

Sections t4 to t5 show the first time when the bobbin holder is replaced. The replacement of the bobbin holder immediately after the discard winding section is performed in order to discard the unusable bobbin wound with the nonstandard thread by the low-speed threading. This section t4
From t5, it is time to set the peripheral speed of the contact roller to the predetermined peripheral speed V1 while the contact roller and the bobbin are not in contact with each other. The predetermined peripheral speed V1 is usually selected so as to match the yarn speed. That is, the feedback control using the sensor S is performed so that the circumferential speed V1 of the free contact roller matches the predetermined yarn speed, and the control value when the circumferential speed of the contact roller matches the predetermined yarn speed is determined. Detected as a high-speed control reference value. At this time, the inverter IN
V3 outputs the output frequency f1. The control value is determined based on the high-speed control reference value in accordance with the subsequent driving situation.

The section t5 to t6 is a high-speed winding section,
The high-speed control reference value is multiplied by, for example, 1.0 to 1.03 as the correction coefficient α, and the contact roller is driven by the inverter INV so that the peripheral speed becomes slightly overfeeding V4.
3 and is driven to an output frequency f4. Then, the slippage between the bobbin mounted on the bobbin holder and the contact roller can be reduced to zero, the peripheral speeds of the contact roller and the bobbin can be completely matched, and high-speed winding based on the rotation speed of the contact roller can be accurately performed. As a result, the package formation becomes better.

A section t6 to t7 is a section for exchanging the bobbin holder after the full winding, in which a high-speed control reference value is output.
At the output frequency f1 of the inverter INV3, the peripheral speed of the free contact roller matches the yarn speed. By doing so, it is possible to prevent the yarn from being wound around the contact roller,
When the bobbin holder is replaced, the contact roller and the empty bobbin come into contact with each other without impact, and the success rate of changing the yarn from the full bobbin to the empty bobbin is improved. As described above, when the control reference value for matching the peripheral speed of the free contact roller with the yarn speed is detected and the contact roller drive motor IM3 is controlled based on the control reference value, the peripheral speed of the contact roller can be accurately controlled. .

FIG. 3 shows another control example of the motor control device. FIG. 3A shows the peripheral speed of the contact roller.
(B) shows the output frequency from the inverter.

The thing different from FIG. 2, the peripheral corresponding to the first leg and the contact roller in a free state in the t0 to t1, the peripheral speed is required to contact the roller at low speed threading V ₀₀ and yarn speed of operation Rotating at the speed V10, and the peripheral speed V
_{The point} is that the low-speed control reference value and the high-speed control reference value are detected from ₀₀ , the frequency f ₀₀ and the peripheral speed V10 at the peripheral speed V00, and the frequency f10 at the peripheral speed V10, respectively. Subsequent thread hooking sections t1~t2 uses the low speed control reference value f _00, the peripheral speed of the contact roller which is suitable for the low speed threading V1
The thread hooking is performed in a state where No. 2 is obtained. In a section t2 to t4 leading to a discard winding after the thread hooking, a control value (a high-speed control reference value × a control value in consideration of slippage of the contact roller and the bobbin).
The output frequency is increased to f13 by α), and the operation is performed such that the contact roller and the bobbin have the same peripheral speed. In the first bobbin holder exchanging section t4 to t5, the contact roller is in a free state, so that the high-speed control reference value is output, the inverter INV3 outputs the output frequency f11, and the contact roller has a peripheral speed that matches the yarn speed. Be driven. The subsequent operation is the same as that described with reference to FIG. 2, and the contact roller drive motor (induction motor) IM3
Is controlled based on the high-speed control reference value.

FIG. 4 is a perspective view showing a state at the time of threading. This spinning winder is called a turret type, and is a type in which a full bobbin and an empty bobbin are automatically switched. Elevating frame 4 that can move up and down freely on main body frame 1
And a rotatable turret plate 2. The elevating frame 4 supports a contact roller CR and a traverse device TR, respectively. The contact roller CR is in pressure contact with a bobbin (winding tube) B at a winding position a, and the bobbin B rotates counterclockwise. It is driving. Further, the traverse device TR is provided with a traverse guide 16, and the traverse guide 16 is engaged with the yarn Y to reciprocate in the traverse range.

The turret plate 2 is rotatable about the central axis 3 at every 180 °, and the two bobbin holders BH
The bobbin holders BH1 and BH2 are provided with several bobbins B (six in the figure) each having a slit 17 at one end thereof. One bobbin holder BH1 is at the winding position a, and the other bobbin holder BH2 is at the standby position b.
It is located in. The yarn is wound on the bobbin B of the bobbin holder BH1 located at the winding position a, and the turret plate 2 is rotated by 180 degrees every time the bobbin B is fully wound. Perform thread transfer. In this way, the continuously supplied yarn is supplied to the two bobbin holders BH.
1. Take up alternately with BH2. Also, the standby position b
A swivel separator 31 for preventing the yarn end of the full package at the winding position a from being caught in the empty bobbin at the winding position a is rotatably supported on the shaft 31a.

In the turret type take-up winder, the yarn transfer from the full bobbin to the empty bobbin can be automatically performed in a continuous operation by a yarn transfer device (not shown). Before starting, for example, the yarn hooking device 40 is used to manually thread the empty bobbin.

The yarn hooking device 40 is attached to a lever 41 which swings about a shaft 41a, and swings between a position below the two-dot chain line and a position above the solid line by a pneumatic cylinder (not shown). It is free to move. The thread hooking is performed by the joint work of the thread hooking device 40 and the revolving separator 31. The thread hooking device 40 includes a cylinder 42, a thread hooking member 43,
And a rod 44. Threading member 43 is bobbin B
The thread hooking member 43 is slidable in the cylinder 42, and the thread hooking members 43 are connected to each other at a predetermined interval by a belt (not shown). Fixed. The rod 44 is a thread hooking member 4
3 and only the threading member 43 at the right end in the drawing is the rod 4
4 are connected to the tip. When the knob 44a of the rod 44 is pulled and the rod 44 is pulled out of the cylinder 42, the thread hooking member 43 is assembled at the left end of the cylinder 42 as shown. Push the knob 44 a of the rod 44 to move the rod 44 to the cylinder 42.
, The thread hooking member 43 is developed at a predetermined pitch P determined by the length of the belt. Further, guide grooves 31b are provided on the revolving separator 31 at a predetermined pitch P.

In the above-described yarn hooking device 40, first, the turning separator 31 is set to the standby position as shown in the figure, the yarn hooking device 40 is swung from the position indicated by the two-dot chain line to the position indicated by the solid line, Are gathered at the left end of the drawing. Then, each yarn Y fed out through the traverse guide 26 is passed through between the contact roller CR and the traverse device TR (the yarn removal guide 28 is turned on as shown in the drawing, so that the yarn Y is not caught by the traverse guide. ), Are sucked together by the air soccer 27.
Then, each of the yarns Y is hung on the yarn hooking member 43.
Next, the rod 44 is pushed into the cylinder 42 by pushing the knob 44a. The thread hooking member 43 is at a predetermined position where it is developed at the pitch P, and the thread Y also travels directly below. Next, the turning separator 31 is turned in the direction. Each thread Y has a guide groove 3
1b, the yarn path is bent to the bobbin B side of the bobbin holder 15, each yarn Y is caught by the slit 17 of the bobbin B, and winding on the bobbin B starts. At the same time, thread removal guide 2
8 is turned OFF, each yarn Y is engaged with the traverse guide 6, and the twill winding is started. According to the above yarn hooking method, each yarn Y is simultaneously caught by each bobbin B.

At the time of the low-speed threading described above, the contact roller rotates at a low speed while being in contact with the bobbin. However, if the motor control device shown in FIG. The speed is ensured, the winding of the thread around the contact roller is prevented, and the success rate of threading is improved.

In the embodiment described above, the motor control device for the turret type take-up winder that switches by projecting two bobbin holders has been described. The present invention can be applied to a motor control device. Although the embodiment in which the bobbin holder is threaded on the winding tube at a low speed has been described, the present invention can be applied to a case where the threading is performed at the same high speed as the high-speed winding.

[0037]

As described above, claims 1 to 3 of the present invention.
According to the present invention, the control value when the peripheral speed of the contact roller reaches a predetermined peripheral speed in a state where the contact roller and the bobbin are not in contact with each other is automatically detected as a control reference value,
Since the configuration is such that the contact roller drive motor is controlled based on this control reference value, the rotation of the contact roller can be controlled based on a state in which the peripheral speed of the free contact roller matches the yarn speed, for example. The peripheral speed of the controller can be set appropriately. In particular, the present invention is effective for a spinning winder having a plurality of operating states, such as at the time of low-speed threading, at the time of high-speed winding, and at the time of replacing a bobbin holder.

[Brief description of the drawings]

FIG. 1 is an equipment block diagram shown together with a motor control device of a take-up winder according to the present invention.

FIG. 2 is a diagram illustrating an example of control of a motor control device.

FIG. 3 is a diagram illustrating another control example of the motor control device.

FIG. 4 is a perspective view showing a yarn winding state of the take-up winder.

[Explanation of symbols]

 51 Reference value detecting means 52 Correcting means BH1 bobbin holder BH2 bobbin holder CR Contact roller P Package B Bobbin Y spinning IM3 Induction motor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B65H 67/048 B65H 54/44 B65H 54/02

Claims (3)

(57) [Claims] 1. A bobbin holder driven by a motor, a contact roller that contacts a bobbin mounted on the bobbin holder, and a motor control device that sends a control value to a contact roller driving motor that drives the contact roller. Equipped, as a bobbin holder
And a bobbin holder on the standby side.
The bin holder and the standby bobbin holder are swapped
The motor control device is configured such that , when the contact roller and the bobbin are not in contact with each other, the peripheral speed of the contact roller substantially coincides with the yarn speed at the time of winding the yarn. Automatically when the control value becomes
The bobbin mounted on the take-up bobbin holder is full
The bobbin holder on the winding side and the bobbin holder on the standby side
The control value at the time of replacement is matched with the control reference value,
A spinning winder , wherein a control value at the time is determined based on the control reference value to control a contact roller driving motor. 2. The system according to claim 1, wherein the yarn is hooked at a lower speed than when the yarn is wound.
Wait for the first bobbin holder on the winding side after the low-speed threading.
Contact hole when replacing with the machine side bobbin holder
When the roller and bobbin are not in contact,
Speed is adjusted to substantially match the yarn speed at the time of winding.
The control reference value is detected.
On-board spinning winder. 3. The yarn hooking is performed at a low speed, and the yarn winding is performed at a high speed.
The control reference value is set before the thread is threaded.
Make the roller and bobbin in non-contact state, and
Control when the peripheral speed of the contact roller becomes
The control value is detected as the control reference value at low speed, and the
Control when the peripheral speed of the contact roller
The control value is detected as a high-speed control reference value.
The spinning winder according to claim 1.