JPH02255472A - Cord winder for working machine - Google Patents

Abstract

PURPOSE:To prevent tensile force of more than necessity from being added to a feeder cord and prolong the extent of its service life by constituting it to control winding torque on the basis of a detecting signal of drawing value of the feeder cord out of a cord winding drum. CONSTITUTION:After a working machine 9 starts out of a carrying instrument 1, traveling along a sinning machine 3, and is moved up to an edge of the spinning machine, when the working machine 9 travels to return the carrying instrument 1, a feeder cord 22 stretched across between the working machine 9 and the carrying instrument 1 is wound up by a cord winding drum 24 being rotated and driven by a driver installed in the carrying instrument 1. When this cord winding drum 24 winds the feeder cord 22, drawing value of this feeder cord 22 is detected by a detector, and on the basis of the detection signal, a controller changes the extent of winding torque of the cord winding drum to magnitute conformed to the drawing value at that time. Consequently, the feeder cord 22 can be wound on the cord winding drum 24 by the winding torque of proper size conformed to the drawing value.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a power supply cord that connects a working machine such as a doffing machine that moves along a spinning machine and a transport machine that carries the working machine by placing it on the end side of the spinning machine. This invention relates to a cord winding device for a working machine.

BACKGROUND OF THE INVENTION In the above-mentioned working machine, a cord winding drum for winding a power supply cord and a drive device for rotationally driving the cord winding drum are provided on the transport machine, and power is supplied from the transport machine by the power supply cord. The zero work machine is transported by a transport machine to one end of the frame of the spinning machine to be worked on, and then runs along the machine base while pulling out the power supply cord from the cord winding drum of the transport machine. When it travels to the other end of the platform, it returns to the transporter, and as the work equipment moves, the power supply cord is wound onto the cord winding drum.The work equipment can perform tasks such as doffing on either side of the reciprocating path. After the work is completed, it is loaded onto the transporter again and transported to the next machine. When the above-mentioned work equipment returns, the power supply cord passed between the work machine and the transport machine becomes extremely loose, and the work machine steps on the power supply cord and damages or cuts it. This can cause excessive tension to be applied to the power supply cord, causing damage to the power supply cord.

Conventionally, in order to prevent the power supply cord from being damaged or cut, as shown in Utility Model Application No. 62-194666, if abnormal tension is applied to the power supply cord for more than a predetermined period of time, the power supply cord will stop running and the cord winding drum will rotate. It has been proposed to stop this. When the work machine travels to the end of the spinning machine, the power supply cord is pulled out the longest, and at this time, the most weight is applied to the power supply cord. Therefore, at the time of winding, a minimum winding torque is required that can pull and move the longest length of the power supply cord as the working machine returns. In the device proposed above, the winding torque of the cord winding drum is set to a size that can wind up the longest drawn-out power supply cord, and this winding torque is used to wind the entire power supply cord. was.

Problems to be Solved by the Invention In the device described in the above-mentioned Japanese Utility Model Application Publication No. 62-194666, the longest drawn-out power supply cord is always wound with a winding torque that allows winding. When the power supply cord is gradually wound up and the amount of pullout is reduced, an excessive tensile force is applied, which causes damage to the power supply cord and shortens the life of the power supply cord. Especially when considering a spinning machine as a spinning machine,
In recent years, the number of spindles in spinning machines has increased to, for example, 960 spindles, and the number of spindles has been increasing, and as a result of this increase in length, the amount of power supply cord to be drawn out has increased, and the set value of the single winding torque must also be increased. There is a problem in that a large surplus tensile force is constantly applied to the power supply cord, further shortening the life of the power supply cord.

An object of the present invention is to solve such problems.

Means for Solving the Problem A detection device is provided in the cord winding device of the working machine to detect the amount of the power supply cord pulled out from the cord winding drum, and the winding torque of the drive device is determined based on the detection signal of the detection device. The invention is characterized by comprising a control device that changes the amount of withdrawal according to the amount of withdrawal.

Effect When the work equipment starts from the transport machine, runs along the spinning machine and is moved to the end of the spinning machine, and then returns to the transport machine, the work machine is passed to the work machine and the transport machine. When the power supply cord is wound by a cord winding drum that is rotationally driven by a drive device installed on the transporter, and when the cord winding drum winds up the power supply cord, the amount of the power supply cord pulled out is detected by the detection device. Based on the detection signal, the control device changes the winding torque of the cord winding lid drum to a magnitude corresponding to the amount of withdrawal at that time. Therefore, the power supply cord is wound onto the cord winding drum with a winding torque of an appropriate magnitude depending on the amount of the cord to be pulled out.

Embodiment In FIG. 1, reference numeral 1 denotes a transport machine that runs on rails 5 by rolling wheels 6, and work machines 9 are loaded on both the front and rear sides of the transport machine by lifters (not shown). Rail 5 above
The figure shows a spinning machine 3. Working passage 4 between group 3A
The working machine 9 is shown in the drawing as a doffing machine that performs doffing work along the spinning machines 3 and 3A, but it may also be a Shino joint machine or the like. In Fig. 2, 8 is the transport machine 1. A storage rail with bridge rails 12.1 at both ends.
3 is provided so as to be swingable from a vertical position to a horizontal position, and after the carrier 1 reaches the end side of the machine to be worked on, the operator presses a push button switch (not shown) to move the bridge rail 12.
or 13 is swung to a horizontal position and connected to the guide rail 15 of the spinning machine 3 or 3A, and the working machine 9 is lowered onto the floor. Thereafter, the working machine 9 runs with its own guide roller 11 being guided from the storage rail 8 to the guide rail 15 by a driving device (not shown). In FIG. 2, reference numeral 22 denotes a power supply cord that supplies power from the top of the transporter to the working machine 9, and one end thereof is connected to the middle part of the lower end of the working machine 9. Next, reference numeral 20 denotes a cord winding device provided on the transporter 1 for winding up the power supply cord 22. Next, this cord winding device [20 will be explained based on FIG. 3.

In this embodiment, only the case where the working machine 9 works along the spinning machine 3 will be described. Figure 3 1;
Rotation in the direction of the arrow 26 of the cord winding motor 25 provided in the transporter 1 rotates the input shaft 28 via the gear train 27 and is transmitted to the output shaft 31 via the powder clutch 30. The rotation of the output shaft 31 is transmitted to the coat winding shaft 3 via a sprocket 32, a chain 33, and a chain wheel 34.
Rotate 5. A coat winding drum 24 is fixed to the cord winding shaft 35, and the coat winding drum 24 is rotated in the winding direction l\. The other end of the power supply cord 22 is connected to the cord winding drum 24 . Also, power supply cord 2
2 are guided by guide rollers 17, 18, and 19 provided in pairs on the main body IA of the transporter 1, as shown in FIG. The above cord winding motor 25 has a forward/reverse changeover switch 43.
When a signal from the reverse switch is transmitted along the signal line of the power supply cord 22, the power supply cord 22 is rotated in the direction of arrow A. As shown in FIG. 4, the powder clutch 3o has an input-side drive member 45 and an output-side driven member 46 disposed on a concentric axis with a powder gap 47 interposed therebetween. 48 intervenes, and by passing a DC current through the coil 49, the powder 48 is bundled along the magnetic flux generated between the drive member 45 and the driven member 46, and this coupling force moves the driven member 46 to the output side. It is designed to transmit torque. Therefore, by adjusting the amount of current flowing through the coil, the binding force of the powder 48 can be changed, and the torque can be changed. When the power supply cord 22 is pulled out from the cord winding drum 24 by starting the working machine 9, the cord winding drum 24 and the output shaft 31 are rotated. During this pulling out, a weak current is applied to the powder clutch 30. , the power supply cord 22 is prevented from being pulled out from the cord winding drum 24 when the working machine 9 stops by applying a rotational resistance to the driven member 46 by the powder 48 (this is called brake torque), 36 1 is a detection device for detecting the amount of drag of the power supply cord 22, and in the drawing, it is composed of a cam 37 provided on the output shaft 31 and a proximity switch 38 for detecting the cam 37. The proximity switch 38 is connected to the control box 4Q, and the output shaft 3
2 pulses of m are transmitted per rotation of 1. In the control box 40, the counter 40a is set to R(1) in FIG.
1, the number of pulses transmitted from the proximity switch 38 due to the rotation of the cord winding drum 24 is counted. ! l! 9 reaches the R position and the reversal switch is pressed, the pulses transmitted by the reverse rotation of the cord winding drum 24, which is rotated in the winding direction along with the returning movement of the working machine 9, are determined to be less than the number of pulses counted above by C. The setting value of the setting device 40b that subtracts is.

For example, when the number of pulses when the working machine 9 reaches position C, which is approximately the middle of the length of the spinning machine 3, is set to 1, and the number of pulses on the counter 40a reaches b after the reverse rotation switch is pressed, the current Deliver a switching signal to the regulator. In addition, work machine 9
It is also possible to check in advance the number d of pulses sent from the R position to the C position, set the value of the setting device 40b to d, and then count the pulses after the work equipment 9 reaches the R position. Needless to say. Current i51! When the working machine 9 is in the R position, the adjuster 40C closes the cord winding drum 24.
The winding torque is set to a value that allows the power supply cord 22 that has been pulled out for the longest time to be pulled and moved without losing its own weight, and when the work equipment 9 is in the R position, the ffi flow with a large fa flow value is transferred to the powder clutch. It is set to flow to 30. When a switching signal is received from the setting device 40b at the C position, the winding torque of the current flowing to the powder clutch 30 is passed between the work equipment 9 and the two carriers at the C position to the power supply coat 22 & the necessary minimum amount that can be wound. It is designed to be changed to a smaller value so that it is as large as possible. In the above embodiment, the winding torque is changed only once during the return movement of the working machine 9, but the winding torque is changed to the powder clutch 30 every time the number of pulses is subtracted by one or more times. The winding torque may be gradually reduced by weakening the ffi flow.

Next, the effect will be explained.

When the work implement 9 is transported by the transporter 1 to the end of the spinning machine 3, the bridge rail 12 is connected to the guide rail 15; the work implement 9 is lowered onto the floor and the power supply coat 22 is wound up as a cord. The spinning machine 3 is pulled out from the drum 24.
run along. When the power supply cord 22 is pulled out, the cord winding drum 24 is rotated, which causes the cam 37 to rotate.
is rotated, and the proximity switch 38 emits a pulse every time it detects the cam 37, which is counted by the counter 40a.

The work machine 9 moves intermittently while performing a predetermined work. When the work machine 9 finishes all work and reaches the R position,
The cam 42 provided on the guide rail 15 turns on the reverse switch of the forward/reverse changeover switch 43, thereby driving the cord winding motor 25, and also causes the current regulator 40c to 1! ! A current with a large flow value flows to the powder clutch 30, and the work implement 9 starts traveling in the return direction (state shown in Fig. 2).
, from then on, the power supply cord 22 is pulled out for the longest time.

The cord is wound onto the cord winding drum 24 as the working machine 9 moves with a large winding torque that allows the cord to be wound.

On the other hand, the proximity switch 38 detects the cam 37 rotated by the rotation of the cord winding drum 24 and sends a pulse.
The number of pulses counted by the counter 40a is then subtracted by the pulse signal. When the 0 operation fi9 travels to the C position and the count number of the counter 40a reaches b, the current regulator 40c is changed from the setting device 40b. A change signal is transmitted to the powder clutch 3o, and the value of the current flowing from the current vAAs40c to the powder clutch 3o changes to a smaller value. As a result, the magnitude of the winding torque by the cord winding drum 24 changes from a large winding torque that can wind up the power supply cord 22 that has been pulled out for the longest time to a small winding torque that can wind up the power supply cord 22 that has been pulled out by about half at the C position. The winding torque is changed to a winding torque, and thereafter, the cord is wound onto the cord winding drum 24 with this small winding torque. By changing the winding torque at the C position in this way, the extra tensile force applied to the power supply cord 22 can be reduced at the C position, thereby preventing the power supply cord 22 from being extremely damaged. can extend the life of 1
When the work machine 9 returns, it is loaded onto the transport machine 1, and the transport machine 1 is driven toward the next target machine. In the above embodiment, the magnitude of the winding torque is changed by the powder clutch 30, but the cord winding motor 25 is configured with a variable torque motor, and the voltage of the variable torque motor is adjusted by the detecting device 36, and the winding torque is changed by the powder clutch 30. The winding torque of the winding drum 24 may be changed, or the amount by which the power supply cord 22 is pulled out may be detected from the rotation of the guide rollers 17, 18, and 19.

Next, FIG. 5 shows a different embodiment of the present invention, in which a roller 52 attached to a swinging rod 51 is crimped to the cord winding portion of the cord winding drum 24 by a spring, and the winding amount of the power supply cord 22 is adjusted according to the winding amount of the power supply cord 22. The amount of oscillation of the a3vJ rod 51 to be oscillated is controlled by the variable resistor 4.
The detection device 50 is configured to convert the resistance value to 0ae. By setting the setting value of the setting device 40be to a value corresponding to an arbitrary position of the working machine 9 on the spinning machine 3, the winding torque can be changed at a desired position by the current regulator 40ce.

Effects of the Invention As described above, the cord winding device for a work machine of the present invention includes a detection device for detecting the amount of power supply cord pulled out from the cord winding drum, and a cord winding device based on the detection signal of the detection device. Equipped with a control device that changes the winding torque of the drive device that rotates the drum according to the amount of power cord pulled out,
When there is a large amount of power cord being pulled out, the power cord can be wound with a large winding torque to the cord winding drum, and when the amount of power cord being pulled out is small, the power cord can be wound with a small winding torque that can be wound onto the cord winding drum. You can change to take-up torque and wind up.
Therefore, it is possible to prevent an excessive tensile force from being continuously applied to the power supply cord, thereby extending the life of the power supply cord.

[Brief explanation of drawings]

The drawings show embodiments of the present application, with Figure 1 being a schematic plan view and Figure 2 being a schematic plan view.
3 is an enlarged side view, FIG. 3 is an overall perspective view of the cord winding device together with a control device, FIG. 4 is a partial sectional view, and FIG. 5 is a diagram showing a different embodiment of the detection device. DESCRIPTION OF SYMBOLS 1... Transport machine, 3.3A... Spinning machine, 9... Working machine, 20... Cord winding device, 22... Power supply cord,
24... Cord winding drum, 25... Cord winding motor, 36.50... Detection device, 40.40e...
Control Box Patent Requester Hatake Howa Kogyo Co., Ltd. Figure 3 Figure 5

Claims (1)

[Claims] 1. A cord winding drum that winds the power supply cord that connects the work machine and the transport machine and a rotating cord winding drum are attached to the transport machine that carries the work machine that moves along the spinning machine by placing it on the end of the machine. In a cord winding device for a work machine, which is provided with a drive device, a detection device detects the amount of power supply cord pulled out from the cord winding drum, and a detection device detects the winding torque of the drive device based on a detection signal from the detection device. A cord winding device for a working machine, characterized in that the cord winding device for a work machine is equipped with a control device that changes the amount of power to be pulled out according to the amount of power cord to be pulled out.