JPH0137490B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a driving device for a traveling unit for detecting a yarn breakage state, and in particular a device for driving and controlling a traveling unit for detecting a yarn breakage state of each spindle in a spinning machine such as a roving frame, a spinning frame, or a spinning machine. The present invention relates to a driving device for a traveling unit for detecting a yarn breakage state.

It is generally known that in spinning machines such as roving frames, fine spinning machines, and stretching and twisting machines, it is necessary to detect yarn breakage during operation. A conventional method for detecting yarn breakage is to run a self-propelled monitoring device (traveling unit) along the direction in which each spindle of a spinning machine is arranged, as described in Japanese Patent Application Laid-open No. 50-20042. , which is optically detected by a photoelectric sensor provided in this monitoring device. Incidentally, the monitoring device detects the thread breakage state of each spindle while the machine is running, and issues a warning to the operator when the thread breakage state is detected. The workers heard the alarm and began repairing the broken weight.

However, because the conventional monitoring device described above automatically runs in a predetermined direction, it runs at a constant speed even when the worker is working on restoring the broken weight. There was a problem that it caused harm to the workers. In addition, this monitoring device
Since the machine continuously travels in a predetermined direction and at a constant speed, the worker cannot freely stop and reverse the machine at will. Furthermore, this monitoring device reduces work efficiency because if a worker arrives in the middle of repairing a broken weight, the worker must stop the work and resume the repair work after passing the monitoring device. There was also the problem that it got worse.

Therefore, the purpose of this invention is to ensure the safety of the worker who is working on recovering thread breakage, to enable the worker to freely stop or drive the machine at will, and to efficiently carry out the work to recover thread breakage. It is an object of the present invention to provide a driving device for a traveling unit for detecting a yarn breakage state, which is improved so as to be able to detect a yarn breakage state.

To summarize the invention, a first pushbutton switch is provided on one side of the travel unit, and a second pushbutton switch is provided on the other side.
A pushbutton switch is provided, and the electric motor is stopped in response to either the first pushbutton switch or the second pushbutton switch being pressed, and the switch is different from the pushbutton switch that was pressed first. The motor rotates in the same direction in response to a pushbutton switch being pressed, and the direction of rotation of the motor before stopping is determined in response to the same pushbutton switch being pressed as the pushbutton switch that was pressed first. In other words, when the operator starts (runs) the traveling unit again after the operator has stopped it to perform restoration work on a broken thread, the traveling unit always rotates in the opposite direction. It starts (travels) in the direction away from the worker and controls the traveling unit so that it does not pose a danger to the worker.

EMBODIMENT OF THE INVENTION Below, with reference to drawings, the case of a spinning machine, which is an example of a spinning machine, will be specifically described as an embodiment of the present invention.

1 to 3 are illustrative views showing the relationship between a spinning machine to which the present invention is applied and a traveling unit according to an embodiment of the present invention. In particular, FIG. 1 is a front view thereof, and FIG. 2 is a traveling unit. FIG. 3 shows an enlarged front view of the unit, and FIG. 3 shows an enlarged side view of the spinning machine and the traveling unit.

In FIG. 1, a spinning frame 100 includes a plurality of (for example, several hundred) weights in its longitudinal direction. Spinning machine 10
A traveling unit 200, which will be described in detail with reference to FIGS. 2 and 3 below, is provided on the front surface of the spinning frame 100 so as to be freely movable in the arrangement direction (longitudinal direction) of a plurality of spindles of the spinning frame 100. In order to run this running unit 200, there is a
A rail (bottom rail) 101 is installed. One longitudinal side of the spinning machine 100 (the left side in the drawing) becomes the gear end GE, and the other side (the right side in the drawing) becomes the out end OE. When the traveling unit 200 travels from the outer end to the gear end, it reverses its traveling direction and travels from the gear end to the outer end. On the out end side,
Electrical equipment section 102 and fixed unit 10 of spinning machine 100
3 and a spinning machine control box 104 are installed. Although not shown, an auto-transfer mechanism is provided at the lower front of the spinning frame 100 to automatically replace the pipe yarn 131 provided for each spindle. Then, when the plurality of pipe yarns 131 arranged in one row wind a predetermined amount of yarn, the auto-dolpher mechanism protrudes toward the traveling path side of the traveling unit 200 and simultaneously winds the plurality of pipe yarns 131 in one row. Exchange. In this case, when the traveling unit 200 runs, it will collide with the auto transfer mechanism, so the traveling unit 200 is moved to the outside end side.
The specific drive control of the traveling unit in this case is as follows:
This will be explained in detail with reference to FIG. 4, which will be described later.

Next, referring to Figures 1 to 3, the spinning machine 1
00 and the traveling unit 200 will be explained in detail. As is well known, the spinning machine 100 has weights provided at regular intervals along the longitudinal direction of the main body 110.
Each weight has a draft mechanism 120 for drawing the sliver.
and a spindle 133 for twisting the drawn yarn and winding it as a tube yarn.

The main body 110 of this spinning machine 100 includes a support 11.
1 will be built. A bracket 1 is mounted on the upper part of the column 111 in a direction perpendicular to the longitudinal direction of the spinning frame 100.
12 is installed. A hanger 113 is fixed to the tip of the bracket 112. A top rail 114 is installed on the hanger 113 along the longitudinal direction. When the traveling unit 200 runs, this top rail 114 is attached to the spinning frame 10.
0 along the longitudinal direction. The spinning machine 100 located directly below the top rail 114
The bottom rail 101 is installed in front of the bottom rail 101. Further, at the tip of the bracket 112, a trolley duct 115 is installed parallel to the top rail 114. This trolley duct 115 supplies power to the travel unit 200 via a current collector 206.

The travel unit 200 has a travel drive motor (electric motor) 211 built into a housing 201, drive wheels 212 are attached to the shaft (or decelerated shaft) of the travel drive motor 211, and wheels 213 are attached to the back of the housing 201. is attached so that it can rotate freely. The drive wheels 212 and wheels 213 are connected to the bottom rail 1.
It is placed on top of 01. L-shaped brackets 202 and 203 are fixed to the back surface of the casing 201 (the surface facing the spinning frame 100) in a vertical direction at regular intervals with respect to the running direction. At the top of these brackets 202 and 203, rollers 20 are placed so as to sandwich both sides of the top rail 114, respectively.
4 is pivoted. In addition, the bracket 202 includes
A bracket 205 for mounting a plurality of photoelectric sensors 221-224 is fixed. Further, a bracket 207 is provided on the bracket 202, and a photoelectric sensor 225 is fixed to the tip of the bracket 207. The traveling unit 200 includes a photoelectric sensor 2 provided corresponding to each roller position of the draft device 120.
21 to 225, the thread breakage state of each weight is detected.

Further, the brackets 202 and 203 are provided with a push button switch 23 for instructing the traveling unit 200 to stop traveling and for commanding to change the traveling direction.
1,232 are each attached. The pushbutton switches 231 and 232 are provided on both sides of the housing 201 in the running direction, and the button portions are formed to be relatively large so that the operator can easily operate them. More preferably, the height is selected so that the button portions of the push button switches 231 and 232 touch the arm or elbow of the worker when the worker is performing restoration work based on the broken thread state. When the travel unit 200 is traveling to the left, pressing the push button switch 231 once issues a stop command, and pressing it a second time issues a command to travel in the opposite direction. When the travel unit 200 is traveling to the right, the push button switch 232 commands to stop when pressed the first time, and commands to travel in the opposite direction (to the left) when pressed the second time. Then, after the double pushbutton switches 231 and 232 issue a stop command when pressed for the first time, when a pushbutton switch different from the pushbutton switch pressed last time is pressed, the two pushbutton switches 231 and 232 start running in the previous running direction. Used to give commands.

Furthermore, a fan drive motor 241 is built into the housing 201 as required. A Sirotskov fan 242 is connected to the shaft of the fan drive motor 241 . Then, the wind generated when the Shirotsuko fan 242 rotates due to the rotation of the motor 241 is guided by the duct 243 and blown out from the blower nozzle 244.
It is blown out from the blower nozzle 246 through the air.
The blower nozzles 244 and 246 blow air around the roller part, Snell wire,
It works to prevent fluff from adhering to the machine base, such as around the ring wire.

Furthermore, on the lower left side of the housing 201, there is a limit switch 25 for detecting the gear end position.
1 is provided, and a limit switch 252 for detecting the out-end position is provided on the right side. Then, on the gear end side, at a position corresponding to the mounting height of the lever of the limit switch 251,
A gear end position detection protrusion 141 is formed.
On the other hand, a protrusion 141 for detecting the out-end position is formed at a position where the out-end traveling unit 200 is housed and corresponds to the height of the lever of the limit switch 252.

FIG. 4 is a circuit diagram of a traveling drive control circuit according to an embodiment of the present invention. Next, with reference to FIGS. 1 to 4, the operation of this embodiment will be explained along with the specific circuit configuration of FIG. 4.

(1) Normal driving operation In the normal state, all inputs of the OR gate 311 are at low level. Therefore, the OR gate 311 does not derive a high-level prohibition condition detection output (that is, it derives a low-level signal).
Therefore, the low level output of the OR gate 311 is inverted by the inverter 321 and the AND gate 33
1 and 332 as one input. The case where the OR gate 311 detects a travel prohibition condition for any of the travel units 200 will be described in detail later.

By the way, the travel unit 200 travels from the outer end OE to the gear end GE direction (i.e., to the left) when the travel drive motor 211 is rotating in the forward direction, and from the gear end when the travel drive motor 211 is rotating in the reverse direction. It is driven to travel in the out-end direction (that is, rightward direction). Now, assuming that the traveling unit 200 is traveling to the left, the RS flip-flop 341 derives a high level from the set output terminal Q and applies it to the AND gate 331. Therefore, AND gate 331 provides a drive command signal to relay circuit 351. Accordingly, the relay circuit 351 supplies electric power to the travel drive motor 211 to cause it to rotate forward. In this state, the travel unit 20
0 reaches the gear end position, the limit switch 141 provides a high level signal to the input terminal 301. This high level signal is OR gate 3
12 and 313 to monostable multi 361 . In response, the monostable multi 361 derives a high level signal for a certain period of time (eg, 2 seconds). The high-level output time of the monostable multi 361 is selected to be a time long enough to prevent the rotation direction of the motor 211 from suddenly reversing and adversely affecting the motor 211. This monostable multi 3
The output of 61 is applied to an inverter 321 via an OR gate 311. Therefore, inverter 3
21 disables AND gates 331 and 332 during the output period of monostable multi 361 to stop rotation of motor 211. The output of the OR gate 312 also resets the flip-flop 341. For this reason, the flip-flop 34
1 derives a high level signal from the reset output and applies it to the AND gate 332. AND gate 33
2 gives a drive command signal to the relay circuit 352 after the output of the monostable multi 361 for a certain period of time. In response, relay circuit 352 supplies power to motor 211 for reversing (ie, current of opposite polarity). As a result, the motor 211 is reversely rotated, causing the traveling unit 200 to travel rightward.

When the travel unit 200 travels to the out-end position, the limit switch 142 derives a high level signal and applies it to the input terminal 302. This high level signal is applied to monostable multi 361 via OR gates 314 and 313. Therefore, monostable multi 361 derives a high level signal for a certain period of time in the same manner as described above, and deactivates AND gates 331 and 332. The output of OR gate 314 also causes flip-flop 341 to be set. Therefore, after outputting the monostable multi 361 for a certain period of time,
AND gate 331 issues a drive command to relay circuit 351 to rotate motor 211 in the forward direction. As a result, the traveling unit 200 is driven to travel leftward again.

As described above, under normal conditions, the traveling unit 200 reciprocates between the out end and the gear end.

(2) Operation when stopping during running If the traveling unit 200 approaches while restoring the broken thread of a certain weight, the operator should press the pushbutton switch 231 or 232. Pressing the pushbutton switch 231 or 232 can be done by the operator's hand, or by protruding the elbow in the direction in which the travel unit 200 is coming, the pushbutton switch hits the elbow and outputs the same result as if the pushbutton switch was pressed. Derive. For example, assuming that the travel unit 200 is traveling to the left, the relay drive circuit 351 drives the motor 211 in the normal rotation. Then, the output signal (high level) based on the press of the pushbutton switch 231 operates the monostable multi 361 via the OR gates 315, 312 and 313, and the OR gate 3
16 to a binary flip-flop (or binary counter) 371. This binary flip-flop 371 is an OR gate 31
When the first input from 6 is received, a high level signal is derived from the set output terminal, and when the second input is received, a low level signal is derived from the set output terminal. In other words, the binary flip-flop 371 will change from the time either pushbutton switch 231 or 232 is pressed once.
During the period until the second press, a high level signal is continuously derived and the OR gate 311 and AND
This is given to the gate 333. Therefore, while the set output Q of the binary flip-flop 371 is at a high level, the high level signal is applied to the inverter 321 via the OR gate 311, inverted to a low level, and output to the AND gate 331.
and 332 are deactivated. Therefore,
Since neither AND gates 331 and 332 derive a high level signal, relay circuit 351
and 352 stops supplying power to motor 211. As a result, the travel unit 200
stops running when either push button switch 231 or 232 is pressed once.

Next, if you want the traveling unit 200 to travel in the same direction after repairing the broken thread of a certain weight, press a pushbutton switch (for example, 232) that is different from the pushbutton switch you pressed earlier. do. A press signal of this pushbutton switch 232 is applied to the input terminal 304. The press signal of push button switch 232 causes flip-flop 341 to be set via OR gate 314 and is applied to binary flip-flop 371 via OR gate 316. Binary flip-flop 371 sets its set output to low level in response to the second input from OR gate 316. Accordingly, OR gate 311
stops deriving the prohibition condition detection output (high level). Therefore, AND gate 331 connects the set output of flip-flop 341 and inverter 32.
Based on the high level output of 1, the relay circuit 35
A drive command signal is given to 1. The relay circuit 351 supplies polarized power to the motor 211 to rotate the motor 211 in the forward direction, and causes the travel unit 200 to start traveling to the left.

On the other hand, if the operator wishes to make the traveling unit 200 travel in the opposite direction to the direction in which it was traveling before stopping, the operator presses the same pushbutton switch 231 that was pressed when stopping the travel unit 200. A high level signal based on the second press of pushbutton switch 231 causes flip-flop 341 to be reset via OR gates 315 and 312.
It is also applied to a binary flip-flop 371. Accordingly, binary flip-flop 3
71 sets its output to low level. Further, the monostable multi 361 sets its output to a low level after a certain period of time after the push button switch 231 is pressed. Therefore, the AND gate 332 connects the reset output of the flip-flop 341 and the OR gate 311.
A drive command is given to the relay circuit 352 based on the fact that the low level signal from the inverter 321 is inverted and given to a high level signal. Therefore, relay circuit 352 supplies polarized power to motor 211 for reverse rotation. In this way, the traveling unit 200 is driven to travel in the opposite direction.

Note that when the traveling unit 200 is traveling to the right, the push button switch 232 or 231 is pressed.
A similar operation is performed when is pressed.

Furthermore, if the pushbutton switch 231 or 232 is pressed and left as it is without being pressed a second time, the set output of the binary counter 371 will be at a high level continuously, so the travel unit 200 will Remains stopped at a position.

(3) Operation when storing and stopping the traveling unit 200 at the out-end position When storing and stopping the traveling unit 200 at the out-end position, a return command push button switch (not shown) provided near the out-end side is used.
The pressing signal is input to input terminal 3 as a manual return command signal.
05 to the OR gate 317. Furthermore, when the amount of winding of the plurality of pipe threads 131 exceeds a specified amount while the traveling unit 200 is running, and it becomes necessary to change the pipe threads 131, the pipe threads 131 are automatically exchanged by the auto-doffer mechanism. , it is necessary to move the traveling unit 200 to the out-end position. Therefore, a certain period of time (for example, 5 minutes) before the auto-dosing mechanism operates.
In this case, the storage command signal generated from the fixed unit 102 is applied to the OR gate 317 via the input terminal 306. This OR gate 317
derives a high level signal continuously during a certain period of the storage command signal or return command signal and supplies it to the inverter 322, and also outputs the AND gate 333,
335 and 336 as one input. Inverter 322 inverts the high level signal to a low level signal and releases flip-flop 342 from its reset state. This causes flip-flop 342 to wait for the set input to be applied.

By the way, when the OR gate 317 derives a high level signal and commands the traveling unit 200 to be retracted, if the traveling unit is traveling to the left, it is necessary to stop it once and then reverse it. In this case, the AND gate 336 is the OR gate 317
An operation command signal is given to the monostable multi 362 based on the fact that both the output of the flip-flop 341 and the output of the flip-flop 341 are at a high level. Accordingly, the monostable multi 362 derives a high level signal for a certain period of time to activate the monostable multi 361 via the OR gates 315, 312, and 313. During the high level output period of this monostable multi 361,
Since the output of OR gate 311 goes high, AND gates 331 and 332 are deactivated and thus motor 211 is stopped. At the same time, the output of the monostable multi-361 is
Flip-flop 341 is reset via OR gates 315 and 312. Therefore, after the monostable multi 361 outputs for a certain period of time, the AND gate 3
32 drives a relay circuit 352. Therefore, the relay circuit 352 reverses the motor 211 and causes the travel unit 200 to travel in the outer end direction. When the travel unit 200 travels to the out-end position and is stored in a predetermined position, the limit switch 142 derives an output and applies it to the input terminal 302. This limit switch 1
The output of 42 causes flip-flop 341 to be set via OR gate 314 and AND
is applied to gate 335. Accordingly, the AND gate 335 detects that the travel unit 200 is stored at a predetermined position at the outer end based on the presence of the storage command signal and the output of the limit switch 142, and opens the flip-flop 3.
Set 42. This flip-flop 34
2 set output (high level) is OR gate 31
1 to the inverter 321, inverted to a low level signal by the inverter 321, and AND
The signal is applied to gates 331 and 332. For this reason,
Relay circuits 351 and 352 do not rotate motor 211. In this way, the traveling unit 2
The state in which 00 is stored at a predetermined position at the out end continues while the output of the OR gate 317 is at a high level. Then, when the automatic exchange mechanism finishes replacing the tube thread 131, the OR gate 317
output becomes low level. Therefore, the inverter 322 inverts the low level signal to a high level signal, resets the flip-flop 342, and cancels the travel inhibited state through the OR gate 311 and the inverter 321. As a result, the traveling unit 200 travels to the left again based on the set state of the flip-flop 341.

Note that the push button switch 231 or 23
When the output of the OR gate 317 becomes high level while the traveling unit 200 is stopped based on the pressure 2, the traveling unit 200 is returned to the out-end position as follows regardless of the stop command. That is, the AND gate 333 converts the monostable multi-3 based on the fact that the set output of the binary flip-flop 371 is at a high level and the output of the OR gate 317 is at a high level.
An operation command signal is given to 63. monostable multi 36
3 derives a high level signal after a certain time delay,
Flip-flop 341 is reset via OR gates 315 and 312. As a result, the traveling unit 200 is driven to travel rightward.

(4) Operation in case of emergency stop When it is desired to bring the traveling unit 200 to an emergency stop due to some abnormality, an emergency stop signal is derived by manual operation by the operator or by an abnormality detection circuit (not shown) included in the fixed unit 102. be done.
This emergency stop signal is applied to inverter 321 via input terminal 307 and OR gate 311. Therefore, inverter 321 derives a low level signal to deactivate AND gates 331 and 332. As a result, the relay circuit 35
1 and 352 immediately stop the power supply to the motor 211 and bring the travel unit 200 to an emergency stop.

If the flip-flop 341 fails and both the set output Q and the reset output become high level signals, bipolar currents will be supplied to the motor 211 at the same time, which may cause the motor 211 to burn out. Therefore, in this case, AND gate 334 detects that both the set output and reset output of flip-flop 341 are at high level, derives a high level signal, and supplies it to OR gate 311. Also in this case, the output of the OR gate 311 becomes high level, and the power supply to the motor 211 is stopped. This has the advantage that the motor 211 can be protected.

As described above, according to the present invention, the traveling unit that detects yarn breakage while traveling near the spinning machine can be freely stopped at a desired position by human operation, and the traveling unit detects yarn breakage. It is possible to prevent the worker from colliding with the worker who is working on restoring the thread condition and cause harm to the worker, and it has a unique effect that the thread breakage state can be managed extremely safely. Another advantage is that the traveling unit can be stopped easily and the traveling direction can be changed easily and quickly.

[Brief explanation of drawings]

FIG. 1 is a front view showing the relationship between a spinning machine and a traveling unit to which the present invention is applied. FIG. 2 is an enlarged front view of the traveling unit. FIG. 3 is an enlarged side view showing the relationship between the traveling unit and the spinning machine. Fourth
The figure is a circuit diagram of a traveling drive control circuit according to an embodiment of the present invention. In the figure, 100 is a spinning machine, 200 is a traveling unit, 211 is a traveling drive motor, 231, 23
2 is a push button switch, 251 and 252 are limit switches (first and second detection means), 30
1 to 307 are input terminals, 311 to 317 are OR gates, 321 and 322 are inverters, 331 to 3
36 is an AND gate, 351 and 352 are relay circuits, 361 to 363 are monostable multi, 371
indicates a binary flip-flop.

Claims (1)

[Scope of Claims] 1. A traveling unit driven by an electric motor, which has thread breakage state detection means that runs beside a spinning machine in which a plurality of spindles are arranged in parallel to detect the thread breakage state of each spindle. a first detection means for detecting that the travel unit has traveled to the end on one side; a second detection means for detecting that the travel unit has traveled to the end on the other side; and the first detection means. drive means for rotating the electric motor in one direction of rotation according to the detection output of the first detection means, and driving means for rotating the electric motor in a direction opposite to the one rotation direction according to the detection output of the first detection means. In a driving device for a traveling unit for yarn condition detection, a first push button switch is provided on one side of the traveling unit, and a second push button switch is provided on the other side, and the driving means includes: The electric motor is stopped in response to either the first pushbutton switch or the second pushbutton switch being pressed, and a pushbutton switch different from the pushbutton switch that was pressed first is pressed. In response to pressing the same push button switch as the previously pressed push button switch, the motor is rotated in the opposite direction to the rotation direction before stopping. A driving device for a traveling unit for detecting a thread breakage state, characterized in that: 2 the first pushbutton switch and the second
The push button switch has a relatively large shape for the part that is operated by pressing, and the mounting height is selected to be approximately the same height as the operator's arm from the floor.
A driving device for a traveling unit for detecting yarn breakage state according to claim 1.