JP2000045135A - Operation of singly driven spindle and controller therefor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stop spindles at a low cost while saving energy when end breakage is detected with a yarn break detector. SOLUTION: When end breakage is detected with a yarn break detector 6 in each spindle, the detector 6 outputs a yarn breaking signal so as to turn the relay 9 into off and a driving motor 2 of the spindle in which yarn breakage has taken place comes to a stop naturally after rotational motion by inertia. After the stop, a timer 11 is actuated when turning a stop ad start switch 10 into on in piecing and the motor 2 is restarted while neglecting the yarn breaking signal to enable an operator to conduct piecing. Thus, it is possible to reduce energy consumption in comparison with the case where electric brake operates and to make electrically braking circuits unnecessary and operations low-priced since the motor 2 comes to a stop naturally when yarn breaking took place.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a ring spinning machine,
The present invention relates to an operation method and a control device of a single spindle drive spindle capable of stopping the rotation of a single spindle drive spindle when a yarn breakage is detected by a thread break detection device by a fiber machine such as a ring twisting machine.

[0002]

2. Description of the Related Art Conventionally, yarn machines such as a ring spinning machine and a ring twisting machine have been provided with a yarn break detecting device, and can detect a yarn breakage of each weight. In a known textile machine having a single spindle drive spindle in which each spindle is rotated by an independent drive motor, a brake control circuit (electric control circuit) is provided when a thread break is detected by a thread break detecting device. ), The rotation of the spindle is stopped immediately by applying a rotational torque, that is, an electric braking, to the drive motor opposite to the rotation at the time of spinning.

[0003]

In the above-mentioned conventional apparatus,
Since the drive motor is electrically braked and the rotation of the spindle is stopped immediately at the time of thread trimming, a brake control circuit for applying the electrical brake is required, which is expensive. Further, power energy for stopping the drive motor at the time of yarn breakage is required, which is not preferable in terms of energy saving. An object of the present invention is to provide an inexpensive driving technique for stopping a spindle with energy saving when detecting a thread break by a thread break detecting device.

[0004]

In order to solve the above-mentioned problems, in the present invention, each spindle of a textile machine is rotated by an independent drive motor, and the yarn breakage of each weight is detected. In the operating method of the single spindle drive spindle, in which the rotation of the drive motor of the weight detected by the thread cut signal from the thread cut detection device is stopped, the drive motor is spontaneously stopped when the drive motor is stopped by the thread cut signal. (Claim 1). According to this, compared to the conventional method in which the electric braking is performed by the thread cutting signal, the electric braking is not performed, so that there is no power consumption, the energy is saved, and the electric braking circuit is not required. Become.

When the drive motor is restarted for splicing after a spontaneous stop of the drive motor, the thread cut signal is canceled for an appropriate time and the drive motor is restarted. ). According to this, the drive motor cannot be restarted because the thread cut signal is valid until the piecing is completed.However, the drive motor is restarted by ignoring the thread cut signal for a predetermined time, and the drive from the broken spindle is restarted. Spliced the thread end to the fleece coming out of the front roller.

An apparatus suitable for the above method is a single spindle drive spindle in which each spindle of the textile machine is rotated by an independent drive motor, and detects yarn breakage of each spindle of the machine base. In a single spindle drive spindle control device that is provided with a thread cut detection device and configured to be able to stop a drive motor of a weight whose thread break is detected by a thread cut signal from the thread cut detection device, a drive motor for each spindle is provided. And a thread-triggering motor stop means for naturally stopping the drive motor by a thread cutting signal when the stop / start switch is in the activated state, and a drive / start switch operating the drive motor stopped by the thread cutting signal. A canceling means for canceling the thread cutting signal for an appropriate time when restarting is provided (claim 3).

[0007] The control device is characterized in that it is a control unit for each weight of a multiple of 4 or 6.

Further, the control device is capable of managing and displaying thread cutting data such as a thread break occurrence weight and the number of thread breaks in which a thread break has occurred from the thread cut signal (claim 5).

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to FIGS. Numeral 1 denotes a spindle 1 of each weight provided along the front of the machine frame of the spinning machine. Each spindle 1 is provided with an independent drive motor 2 as shown in FIG. 1 or FIG. Each drive motor 2 is electrically connected to the three-phase AC power supply 4 via a normally open contact 9a of a relay 9 included in a motor control unit 3a provided corresponding to each drive motor 2, an inverter device 20, and a fuse (not shown). Connected. In addition, each spindle 1
Is provided with a mechanical brake device 5. Each spindle of the spinning machine is provided with a photoelectric tube 6 serving as a thread break detecting device for detecting a thread break between the front roller 7 and the snare wire 8.

The motor control unit 3a provided for each weight is
A control device is configured together with the data totaling unit 3b to control the rotation of each drive motor 2; a relay 9 provided for each weight; a stop / start switch 10 provided for each weight; Motor stopping means (circuit) S1 including a normally closed contact 6a of the thread cutting detecting device 6 corresponding to
And a canceling means (circuit) S2 including a timer 11. The motor control unit 3a is provided in a switch box 12 provided in the drive motor 2. As shown in FIG.
1, the stop / start switch 10 includes a
Are connected in series, and the coil of the relay 9 is connected in series to the normally closed contact 6a. In the canceling means S2, the coil of the timer 11 is connected in series to the stop / start switch 10, and the normally open contact 11a of the timer 11 is connected in parallel with the normally closed contact 6a between the stop / start switch 10 and the coil of the relay 9. It is connected.

The contact 9a of the relay 9 is a normally open contact. The contact 9a opens when the coil of the relay 9 is in a non-excited state, stops the power supply from the power source 4 to the drive motor 2, and starts the drive motor 2 It is turned off, and when the coil of the relay 9 is excited, it closes and supplies power to the drive motor 2 to turn the drive motor 2 on. The stop / start switch 10 is a normally open switch, and is turned off from the OFF state.
When operated to the N state, the coil of the relay 9 is set to the excited state, and when operated from the ON state to the OFF state, the coil of the relay 9 is set to the non-excited state so that the drive motor 2 can be started and stopped. The stop / start switch 10 is turned off.
When operated from the state to the ON state, the timer 11 is operated. In the thread stopping motor stopping means S1, when the thread cutting detecting means 6 detects a thread break, a thread cutting signal is output, the normally closed contact 6a is opened, the coil of the relay 9 is de-energized, and the drive motor 2 and the power supply 4 are turned off. And the drive motor 2 is stopped. In the canceling means S2, if the stop / start switch 10 is operated from the OFF state to the ON state while the coil of the relay 9 is in the non-excited state by the thread cutting signal, the timer 11 operates for an appropriate time. ,
The normally open contact 11a is closed, the coil of the relay 9 is excited, and the drive motor 2 is driven. Timer 11 at this time
The operation time may be a time sufficient for splicing the yarn of the thread trimming.

The data totaling section 3b is provided in common for each weight, and a thread cutting signal transmitted from the thread cutting detecting device 6 provided for each weight to the motor control section 3a is a weight number or the like. A central processing unit (CPU) 13 for arithmetically processing the input thread cut signal;
A storage means 14 for storing the thread cutting data calculated by the PU 13 is provided to manage thread cutting data such as the thread trimming weight at which thread breakage has occurred and the number of times of thread breakage. The thread trimming data to be managed is displayed in an appropriate format on a display means 15 (for example, a display or a printer) provided in the data totaling unit 3b.

The brake device 5 is mounted on the housing 16 of the drive motor 2. The brake device 5 includes a brake operation member 17 and an operation handle 18 as shown in FIGS. Brake operation member 17
Is formed of an elastic material such as a synthetic resin.
The arm 19 of the brake operating member 17 is located on both outer sides in the diametrical direction with respect to the flange 21 with the spindle 1 interposed therebetween, and surrounds the flange 21 approximately half a circumference. Each arm 19
A braking portion (brake shoe) 22 is attached to the inside of the distal end portion. An operation handle 18 is provided on a rear portion 23 of each arm 19, and an operation projection 25 for pressing down a leaf spring 24 is provided on a lower surface of the operation handle 18. The leaf spring 24 operates the contact operating body 26 of the stop / start switch 10 so that the ON / OFF state can be operated. When the operating handle 18 is in the inclined position shown by the two-dot chain line in FIG.
0 is turned off, and the left and right side walls of the operation handle 18 are engaged with the cam surface 23a of the rear portion 23 to push the rear portion 23 right and left in FIG.
9 are elastically deformed in directions approaching each other, so that the braking portion 22 is pressed against the flange portion 21. As shown by the solid line in FIG. 4, when the operation handle 18 is at the horizontal position,
The left and right side walls are engaged with the lower side of the cam surface 23a of the rear portion 23, and the operation projection 25 pushes down the leaf spring 24, thereby holding the stop / start switch 10 in the ON state. The handle 18 is located in a horizontal position.

The power supply 4 is turned on and the spinning machine is driven (the switches 10 of the circuits S1 and S2 are closed). When a thread break occurs at a certain weight, the thread break detector 6 detects the thread break. The thread cutting signal is output (ON). As shown in FIG. 6, when the thread cut signal is turned on, the contact 6a is opened in the circuit S1, the coil of the relay 9 is demagnetized, the contact 9a of the relay 9 is opened (OFF), and the power supply to the drive motor 2 is stopped. As a result, the drive motor 2 is turned off, and naturally stops after the inertial rotation. At this time, the stop / start switch 10 is in the ON state. The weight spontaneously stopped due to yarn breakage is spliced by an operator. At the time of yarn splicing, the operation handle 18 is operated to temporarily turn the stop / start switch 10 from ON to OFF, and then from OFF to ON again, the timer 11 is operated (ON), the contact 11a is closed, and the thread is cut by the circuit S1. The coil of the relay 9 in the non-excited state (OFF) is set to the excited state (ON) by a signal, the relay contact 9a is closed, the drive motor 2 is started (ON), and the spindle 1 rotates to perform the yarn splicing. When thread joining is completed, the thread cutting signal turns off.
Since the contact 6a is closed and the timer 6 is de-energized after the elapse of the appropriate time T set and the normally open contact 11a is opened and the timer 11 is turned off, the energized state of the motor is maintained. Then, the tube yarn is formed in the same manner as before the yarn breakage. Further, when the thread breakage is detected by the thread breakage detecting device 6 and the drive motor 2 is stopped, and the operator immediately goes to the thread breakage weight, and the spindle 1 of the thread breakage weight is rotating, the brake is applied. After operating the operation handle 18 of the device 5 from the horizontal position to the inclined position and pressing the braking portion 22 against the flange portion 21 to mechanically stop the rotation of the spindle 1, the yarn joining operation is performed.

The data totaling unit 3b, which has received a thread cut signal from the thread cut detecting device 6 due to the occurrence of a thread break, outputs the number of the thread break weight from the thread cut signal and the number of thread breaks counted for each thread break weight. Storage means 14 for storing the thread trimming data of the
And these data can be displayed in detail on the display means 15 in an appropriate display format as a thread break weight number, the number of thread breaks per unit time, and the like.

A motor control unit 3a provided for each weight
As shown in FIG. 7 for each weight of 4 or 6 multiples.
One control unit 28 may be shared by each weight and provided on the machine base. As described above, when the motor control unit 3a is one control unit 28, a control unit can be provided for each unit constituting the machine base when the machine base is manufactured. Further, the thread cut detecting device 6 is not limited to the photoelectric tube. Of course, it is needless to say that the brake device is not required.

[0017]

As described above, according to the present invention, the supply of power to the drive motor for driving the spindle is immediately stopped by the thread cut signal, and the rotation of the spindle is stopped naturally. It does not consume electric power and saves energy as compared with the one that brakes in a short time. Further, a brake control circuit for electrically braking the drive motor is not required, and the cost is reduced. Also, at the time of thread breakage, the thread cut signal is ON until the yarn splicing is completed, and the drive motor of the thread trimming weight cannot be restarted, but the drive motor is restarted by ignoring the thread cut signal for a predetermined time. Can be spliced.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the present invention.

FIG. 2 is a diagram illustrating wiring between a power supply and a drive motor.

FIG. 3 is a ladder diagram.

FIG. 4 is a side view of the brake device.

FIG. 5 is a plan view of FIG. 3;

FIG. 6 is a time chart.

FIG. 7 is a diagram showing another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Spindle 2 Drive motor 6 Thread cutting detecting device (motor stopping means at thread cutting) 10 Stop start switch 28 Control unit S1 Motor stopping means at thread cutting S2 Canceling means

Claims (5)

[Claims] 1. A spindle in which a spindle of a textile machine is rotated by an independent drive motor, and a thread break detected by a thread cut signal from a thread break detector detecting a thread break of each spindle. The method for operating a single spindle drive spindle, wherein the drive motor is stopped when the drive motor is stopped by a thread cutting signal. 2. The driving motor according to claim 1, wherein, after the driving motor is spontaneously stopped, when the driving motor is restarted for piecing, the thread cutting signal is canceled for an appropriate time and the driving motor is restarted. Operating method of single spindle drive spindle. 3. A single spindle drive spindle in which each spindle of a textile machine is rotated by an independent drive motor, and a thread cut detecting device for detecting a thread break in each spindle of the machine base is provided. In a single spindle drive spindle control device configured to be capable of stopping a drive motor of a weight whose thread break is detected by a thread cut signal from the thread cut detection device, a drive motor stop / start switch is provided for each weight. Also, a thread cutting time motor stopping means for naturally stopping the drive motor by a thread cut signal when the stop start switch is in a start state, and the thread stopping when the drive motor stopped by the thread cut signal is restarted by a stop start switch operation. A control device for a single spindle drive spindle, comprising: cancel means for canceling an off signal for an appropriate time. 4. The single spindle drive spindle control device according to claim 3, wherein a control unit is provided for each weight of a multiple of 4 or 6. 5. The control device according to claim 3, wherein the control device is capable of managing and displaying thread cutting data such as a thread break occurrence weight and the number of thread breaks in which a thread break has occurred from the thread cut signal. Control device for spindle drive spindle.