JPH07100888B2 - Sliver forming device with carding machine and drawing machine connected - Google Patents

Description

TECHNICAL FIELD The present invention relates to a sliver forming device in which a plurality of carding machines and one drawing machine are connected.

2. Description of the Related Art The sliver forming device as described above detects the sliver storage amount in the storage device by the detection switch in the sliver storage device provided on the front side of the carding machine, and the operating speed of the kneading machine in accordance with the increase / decrease fluctuation. To control the running speed of the carding machine to equilibrate with the operating speed of the carding machine (No. 41-10171), and doffer driving device 1 of many carding machines is dynamically connected with one continuous under-aft. At the same time, connect this under shaft to the draft zone of the drawing machine via a gear,
The rotation speed of each doffer and the back roller in the draft zone is mechanically synchronized, and the rotation speed of the doffer motor that rotates the doffer independently is determined by the rotation of the back roller in the preliminary draft part of the kneading machine. A device in which the speed is detected and the signal is used for synchronization (Japanese Patent Laid-Open No. Sho 60).
-155730) and so on.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention According to the above-mentioned conventional technique, when the carding machine and the kneading machine are connected and the operation is controlled, one of the operating states is reflected in the other operating state. There is power transmission and signal exchange between the carding machine and the drawing machine, and therefore, when attempting to make such a connection using the existing carding machine, both the carding machine and the drawing machine are modified. It was necessary and there was a problem that the remodeling was expensive. Further, the drawing machine generally shifts the back roller upstream of the main draft zone or the rear roller pair of the adjusting draft section arranged upstream of the main draft zone to obtain a constant sliver spot. It is equipped with a (weight unevenness) correction device, and the control range of the conventional sliver spot correction device is, for example, about ± 25% with respect to the average draft, and the average spinning of the carding machine connected to such a kneading machine. The amount (average production amount = weight) is the positive side of the control range of the sliver spot correction device (+25
%) Is set to a low value (75% or less) that does not exceed the maximum spinning amount (100%) even if it covers (that is, 25% or more of the spinning amount margin was expected. ), So the sliver production from the drawing machine was also a value corresponding to it.

Means for Solving Problems The carding machine is equipped with a sliver storage device, and the carding machine is controlled by increasing and decreasing the sliver in this sliver storage device, while the drawing machine controls its operating speed by inverter control. In addition, the feeding roller upstream of the main draft zone of the kneading machine is equipped with a thickness variation correcting device that changes the speed by the signal from the thickness variation detector, and detects the rotation speed of this feeding roller. When the rotation speed becomes higher than the normal speed by a set value, the operating speed of the entire kneading machine is reduced to reduce the rotation speed of the feeding roller to the normal deceleration, and thereafter, when the speed becomes the set value, The inverter device controls the motor for the kneading machine so as to increase the operating speed of the entire kneading machine and return the rotation speed of the feeding roller to the normal speed, and controls to change the operating speed of the kneading machine in multiple stages. Equipment It is characterized in that the set value is set to a value obtained by dividing the entire correction range of the thickness unevenness detection device into each speed step of the operating speed of the kneading machine which is changed in multiple stages.

Action According to the above configuration, the sliver supply amount of the sliver spun from a plurality of carding machines, which is supplied to the main draft zone of the drawing machine, is detected by the rotation speed of the feed roller of the sliver thickness unevenness detector. Then, when the supply amount from the carding machine decreases (the variation in gelling due to sliver spots), the rotation speed of the feeding roller exceeds the normal speed by a set value. When the rotation speed of the feeding roller is reduced to the normal speed, and when the rotation speed of the feeding roller falls below the set value after that, the operating speed of the entire kneading machine is increased to increase the speed between the carding machine and the kneading machine. By connecting both to form sliver even if there is no exchange of signals, etc., the spinning speed of the kneading machine is divided into multiple stages, and sliver thickness unevenness is corrected in each stage. Of the spinning amount of carding machine The sliver forming device can be made smaller by increasing the average spinning amount to be higher than the average spinning amount of the carding machine in the case of the conventional constant speed spinning device and sliver spot correction device. It will increase the total production.

Example Next, an example of the present application will be described with reference to the drawings. 1 and 2 show a sliver forming apparatus 1 in which a plurality of carding machines A1, A2 ... An (collectively referred to as carding machines A) and one drawing machine B are connected. The number of the carding machines A is generally about 6 to 8, but the number is not limited to these. Since the drive systems of the above carding machines A1 to An all have the same structure as shown in FIG. 1, the one carding machine is next.
Only A1 will be described, and with respect to the other carding machines A, corresponding parts will be denoted by the same reference numerals and redundant description will be omitted. The carding machine A may have any specific configuration,
Any of various conventionally proposed carding machines may be used. In this carding machine A1, 2 is a feed roller, 3 is a take-in roller, 4 is a cylinder, 5 is a doffer, and 6 is a calender roller.
It is designed to be driven by CM.

In front of the calendar roller 6 of the carding machine A1, for example,
-Sliver storage device 7 as disclosed in No. 39051
The sliver storage device 7 is equipped with a photoelectric switch.
Drive motor CM when SW1 and SW2 are attached and photoelectric switch SW1 is blocked, that is, when the sliver storage amount is large
When the light blocking of the photoelectric switch SW2 is released, that is, when the sliver storage amount decreases, the drive motor CM is accelerated or started to make the supply amount to the kneading machine almost constant. I try to keep it.

Next, in the drawing machine B, 8 is a frame main body, and 9 is a creel connected to the rear of the frame main body. In the frame body 8, 10 is a coiler, 11 is a calendar roller, 12 is a trumpet, 13 is a draft zone, and this draft zone 13 is a front roller 14 and a second roller 15.
It is composed of a main draft zone MD between them and a brake draft zone BD between a second roller 15 and a back roller 16 which constitute a feeding roller upstream of this main draft zone MD. The coiler 10, the calendar roller 11, and the front roller 14 are connected to the drive shaft of the kneading machine motor M via a transmission mechanism 17 so as to be rotationally driven by the kneading machine motor M with a brake. The second roller 15, the back roller 16, and a lifting roller described later are connected to a transmission 18 using a differential gear interposed between the front roller 14 and the second roller 15 via a transmission mechanism 19. The transmission device 18 constitutes a part of a thickness unevenness correction device 20 that detects thickness unevenness of the sliver and corrects it so as to reduce the unevenness. As is well known, the thickness unevenness correcting device 20 is an air micrometer 21 provided on the trumpet 12 for detecting a long-term unevenness, and an electrostatic capacitance arranged behind the back roller 16 for detecting a short-term unevenness. Mold detector 22, tacho sensor 23 for detecting the rotation speed of the front roller 14, tacho sensor 24 for detecting the rotation speed of the second roller 15, and servo motor 25 for rotating the control shaft of the transmission 18.
And the above air micrometer 21, detector 22, tacho sensor
It is composed of a control unit 26 for controlling the rotation of the servo motor 25 based on the signals of 23 and 24, and as is well known, the draft ratio of the main draft zone MD is changed to make the sliver gel uniform. The thickness unevenness detection device 20 is arranged such that an adjustment draft zone including a front roller pair and a rear roller pair is provided behind the draft zone separately from the draft zone, and the draft in the adjustment draft zone is provided. The ratio may be changed to correct the thickness unevenness, or the draft may be adjusted between the second roller 15 and the back roller 16 or between the back roller provided separately upstream of the back roller 16 and the back roller 16. Next, the above transmission mechanism
A pulsar 27, which detects the rotation speed (rotation speed) of the back roller 16 as an example of a rotation sensor and generates one pulse signal when the back roller 16 makes one rotation, is attached to the device 19.
In addition, the motor M for the drawing machine is the motor M for the drawing machine.
An inverter device 28 is electrically connected so that its rotation speed can be controlled by changing the frequency. As the inverter device 28, a "commercial general-purpose inverter" is used. Next, the creel 9 is a creel beam 29 supported on a floor by columns (not shown) and the creel beam 29.
Multiple lifting rollers 30 rotatably supported on
Composed of and. These lifting rollers 30 rotate in synchronization with the back rollers 16 to transfer the sliver in the sliver storage device 7 of the carding machine A to the draft zone 13. Then, the average spinning amount of these carding machines A with almost no sliver spots (for example, 85% of the maximum spinning amount)
At the time of spinning, the back roller 16 of the drawing machine B is made to rotate at an almost constant speed at the normal rotation speed S for feeding the average spinning amount from the carding machine A to the drawing machine B without excess or deficiency. There is.

Next, the control device 31 that controls the inverter device 28 will be described. FIG. 3 shows the external connection of the inverter device 28,
The part 31a of the control apparatus 31 is shown. 4 shows the remaining control device 31b of the inverter device 28. In the controller 31a, VRH is a high-speed volume that sets the rotation speed (spinning speed DHi) of the drawing machine motor M during high-speed operation, and VRC is the rotation speed during deceleration due to sliver spots during high-speed operation (control A control rotation volume (see FIG. 5) that sets the speed DLo), and the set value of any one of these volumes VRH, VRC is output to the inverter device 28 by the action of the relay contacts RR1a, RR1b, RR3. It is supposed to be done. RUN1 and MS1 are relay contacts that operate when the motor M for the drawing machine operates. As for the control speed DLo, the backing roller 16 of the drawing machine B, which was operating at high speed, is corrected from the normal rotation speed S of the high speed to correct the sliver unevenness due to the sliver unevenness (weight unevenness) from the carding machine A. Is set to a value that cancels the increased speed and returns the rotation of the back roller 16 to the original high normal rotation speed S. Further, the set value S1 of the speed increase is such that when the total correction range of the sliver thickness unevenness correction device 20 is ± 25%, the supply amount (spinning amount) from the carding machine A decreases. In consideration of the case where the sliver is broken, a value obtained by dividing the entire correction range into each speed stage, that is, 12.5 at the time of the high speed normal rotation
%, And therefore, the value is set to correct sliver spots of 12.5% even during control rotation. In the control circuit 31b, the circuit 1 is a circuit for starting and stopping the main motor M, and the circuit 2
Is a start / stop circuit of the inverter device, circuits 3 and 4 are high speed normal rotation circuits of the motor for the drawing machine, circuit 5 is a control rotation circuit, circuit 6 is a main motor OFF circuit, and circuit 7 is a back roller rotation speed detection. A circuit, a circuit 8 is a reset circuit for the first counter AC1, a circuit 9 is a circuit for counting up the first counter AC1 by an ON signal of the relay CRPS of the circuit 7, and the first counter AC1 is for increasing the speed of the back roller 16. Set value S1
Is set by converting the number of pulses, and for example, when the number of pulses counted within a predetermined time set by the timer TR2 becomes larger than the set value, the relay contact AC1 (circuit 12) is closed. The circuit 10 is a measurement time setting circuit for the first counter AC1, the circuit 11 is a reset circuit for the timer TR2, the circuit 12 is a switching circuit to control speed, and the circuit 13 is a second counter AC.
2 reset circuit, circuit 14 second counter AC2 count circuit, circuit 15 fast switching circuit, circuit 16 second counter AC
With the reset signal output of 2 and the OFF circuit of the relay CR3, the entertainment value S2 of the second counter AC2 is 12.5% increase in the back roller against the sliver supply amount from the carding machine A when the entire drawing machine B is in controlled rotation. When the decrease in the rotation speed is set in pulse conversion and does not exceed the number of pulses within the time set by the timer TR2, the motor M for the kneading machine is returned from the control rotation to the high speed normal rotation.

According to such a configuration, the start button P of the circuit 1 of the control circuit 31b
When BH is turned ON, relay MS turns ON, relay CRH self-holds, relay contact MS of circuit 2 closes, and relay RUN turns ON. Then the control circuit 31a closes the relay contacts MS1 and RUN,
The main motor M is activated and the inverter device 28 is also activated. The relay CRH is turned on, the relay contact CRH of the circuit 4 is closed, the relay RR1 is turned on, and therefore the relay contact RR1a of FIG. 3 is closed, and the inter-terminal electronic pressure applied to the inverter device 28 is changed by the high speed setting volume VRH, The main motor M is rotated at high speed. The sliver from the carding machine A is supplied to the back roller 16 of the drawing machine B via the creel 9, and the thickness unevenness correcting device 20 operates in a known manner according to the sliver supply amount, and the second roller 15 and the back roller 16 are operated. The main draft amount between the front roller 14 is constantly changed by changing the rotation speeds of the roller 16 and the lifting roller 30. Carding machine A is the feeding amount by increasing the speed of the back roller 16 in the drawing machine B (+12.5
%) So that the average spinning amount becomes 87.5%.
Repeat N, OFF control. When the back roller 16 makes one revolution, the pulsar 27 of the circuit 7 closes once and the relay CRPS turns O each time.
N, and thus the first counter AC1 is incremented. As long as this count value does not exceed the setting value of the first counter AC1, the contact T of the circuit 9
R2 opens and stops counting of the first counter AC1, and the circuits 8 and 1
The contact TR of 1 is closed and the first counter AC1 is reset, and after the set time of the timer TR3, the contact TR3 of the circuit 10 is turned off and the timer TR2 is reset. Therefore, the contact TR2 of the circuit 9 is closed and the first counter is again opened. AC1 starts counting. Carding machine A
When the sliver unevenness (weight unevenness = spinning amount) from -12.5% is reached, the first counter AC1 is turned on accordingly and the circuit 12
The counter contact AC1 of is closed, the relay CR1 is held by itself, and the timer TR4 starts counting. Then, the normally closed contact CR1 of the circuits 9 and 10 is opened, the count-up of the first counter AC1 is stopped, and the timer TR2 stops the time count. When the timer (this timer TR4 starts counting after deceleration) TR4 times out, the contact TR4 of the circuit 10 turns on and the timer TR2 turns on, and the timer TR2 is reset and starts time counting from the beginning. Relay CR
When 1 is closed, normally closed contact CR1 of circuit 4 is opened, relay contact CR1 of circuit 5 is closed, relay RR1 is OFF, and instead relay RR3
Is turned on, a voltage is applied to the inverter device 28 via the control rotation volume VRC shown in FIG. 3, and the rotation of the main motor M is controlled so that the rotation speed of the back roller 16 is in the vicinity of the normal rotation speed S (and Is included). Therefore, the sliver feed amount by the back roller 16 of the drawing machine B is from the average feed amount of 87.5% to a maximum of 100% with sliver spot correction, and the carding machine also has an average spinning amount of 87.
It is 5% and the maximum is 100%, and there is no sliver break between them. When the timer TR4 times out, the timer contact TR4 of the circuit 13 is opened, the timer contact of the circuit 14 is closed, and each time the pulse signal enters the relay CRPS, the contact CRPS is closed and the second counter AC2 counts up. Then, the timer TR2 times up, and by this time, when the count value of the second counter AC2 is larger than the set value set by the second counter AC2 within the measurement time, the second counter AC2 is turned on and the circuit 16 is closed. Relay CR is ON, so circuit 13 is closed and the second counter
When AC2 is reset and timer TR3 times out, the timer
TR2 is reset, the timer TR6 of the circuit 16 turns on, and after the time is up, the relay CR3 turns off, and the second counter in the circuit 14
AC2 starts counting again. If the count value of the second counter AC2 falls below the set value, the second counter AC2 will not turn on by the time the timer TR2 counts up, so the relay CR2 will turn ON in the circuit 15 and the timer TR5 will self-hold. Start counting. Then, at circuit 12, contact C
R2 opens, relay CR1 turns off, timer TR4 is reset, second counter AC2 stops counting, relay contact CR1 of circuit 4 closes, normally closed contact CR1 of circuit 5 opens and relay RR1
Is turned on and the relay RR3 is turned off, and the inverter device 28 again operates the main motor M at high speed under the high speed volume VRH. Relay CR2 turns off when timer TR5 times up
Then, the first counter AC1 is reset and starts counting again.

In this embodiment, the spinning speed of the drawing machine B is switched to two stages, and the control range of the sliver spots from the carding machine A is divided for each spinning speed, but it may be divided into multiple stages. For example, when the control range of sliver unevenness is set to 25% and the spinning speed of the kneading machine is set to three stages (Fig. 6), the speed increase for correcting the sliver unevenness by the back roller 16 at each speed stage. The set values are set to 8%, 8% and 9%, and the average spinning amount of the carding machine A is set to 90%, and the back roller 16 rotations of the drawing machine B correspondingly corresponds to the sliver average feed. The included amount is 90%,
When the sliver spots from the carding machine A are 8%, the back roller 16 tries to correct this, but since the spinning amount of the carding machine A has a margin of 10%, the sliver is not broken. A high average spinning amount can be obtained. Therefore, the speed-up setting value of the back roller at each speed stage over multiple stages of the drawing machine B is smaller than the difference (margin of the spinning amount) between the average spinning amount and the maximum spinning amount of the carding machine. Just do it. Further, although the entire machine base is decelerated by increasing the speed of the back roller, the degree of deceleration may be set so that the rotation of the back roller 16 is lower than the normal rotation speed S. Further, the thickness unevenness correction device may be configured to take long-term unevenness.

As described above, in the present invention, in the sliver forming device in which the carding machine and the drawing machine are connected, the carding machine is provided with a sliver storage device, and the spinning amount of the carding machine is determined by the sliver storage amount. On the other hand, the kneading machine is provided with a sliver unevenness correcting device, the rotation speed of the feeding roller of this sliver unevenness correcting device is detected, and the spinning speed of the kneading machine is divided into multiple stages by this detected value. ,
Since the sliver thickness unevenness is corrected in each stage, the spinning amount margin of the carding machine can be reduced,
As a result, the average spinning amount of the carding machine and the kneading machine can be increased more than before, and the production amount can be increased. Moreover, there is no exchange of signals between the carding machine and the drawing machine regarding the spinning state thereof, and it can be carried out at a low cost when modifying the existing carding machine and drawing machine.

[Brief description of drawings]

FIG. 1 is a view showing the whole of the present invention, FIG. 2 is a perspective view, and FIG.
FIG. 4 is a diagram showing an external connection (a part of the control device) of the inverter device, FIG. 4 is a diagram showing another part of the inverter device, FIG. 5 is an operation explanatory diagram, and FIG. 6 is another embodiment. . A ... carding machine, B ... drawing machine, 7 ... sliver storage device, 16 ...
Back roller (feeding roller), 20 ... Thickness unevenness correction device,
21 ... Thickness detector, 27 ... Pulsar (rotation sensor), 28 ...
Inverter device, 31a, 31b ... Control device, M ... Motor for drawing machine, MD ... Main draft zone

Claims (1)

[Claims] 1. A plurality of carding machines and one drawing machine are connected, each carding machine is provided with a sliver storage device, and each carding machine operates according to the sliver storage amount of the sliver storage device. In the sliver forming device for controlling and feeding the sliver to the kneading machine through the sliver storage device, the kneading machine and the kneading machine motor for determining the operating speed of the whole kneading machine It is equipped with an inverter device for controlling the rotation speed of the motor for the stripping machine, and is further equipped with a thickness unevenness correction device for shifting the feed roller upstream of the main draft zone of the drawing machine by the signal from the thickness unevenness detector. , A rotation sensor for detecting the rotation speed of the feeding roller is provided, and when the rotation speed of the feeding roller becomes higher than the normal speed by a set value based on the signal of the rotation sensor, the kneading machine Overall driving speed The rotation speed of the feeding roller is reduced to the normal speed, and when the speed is reduced by the set value thereafter, the operating speed of the entire kneading machine is increased to return the rotation speed of the feeding roller to the normal speed. In addition, the inverter device is provided with a control device for controlling the motor for the drawing machine to change the operating speed of the drawing machine in multiple stages, and the set value is changed in multiple stages over the entire correction range of the thickness unevenness detection device. A sliver forming device in which a carding machine and a kneading machine are connected to each other, wherein the operating speed of the kneading machine is set to a value divided into each speed step.