JPH0330373Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is applicable to wire rods such as electric wires and cables, especially wire rods that are wound around a basket in a vacuum tank and sent out from a sending device, or a basket in a winding device. This invention relates to a device for controlling the speed of a wire being wound.

The present invention will be described below regarding a case where it is applied to a delivery device, but it can be similarly applied to a winding device.

[Prior art and its problems] When a wire rod wound around a basket is installed in a tank such as a vacuum tank and the wire rod is sent out from the outlet of the tank by rotating the basket, the line of the wire rod is If the basket is rotated at a constant rotational speed regardless of the speed, the speed of the wire changes and the wire may come into contact with the outlet of the tank and be damaged. Therefore, conventionally,
It was necessary to manually adjust the feeding speed of the wire while constantly visually observing the position of the wire near the outlet of the tank. Especially when rapid fluctuations in line speed occur frequently, line start-up and
When stops are frequent or when the line speed is high, adjusting the feed speed manually is very difficult and requires a lot of concentration, making it easy to make mistakes. It was hot.

In addition, the position of the wire was detected by bringing a roll into contact with the wire near the outlet of the tank, and this position detection signal was used as a dancer roll signal to control the feed speed of the wire. If it is difficult to install a contact-type position detection device for the wire due to the structure, it is difficult to automatically control the feeding speed, and it is also difficult to accurately control the feeding speed by using dancer roll signals alone to deal with sudden fluctuations in line speed. Another problem was that it was difficult to control well.

Therefore, the purpose of the present invention is to solve the above-mentioned problems of the prior art, and to not only automatically carry out the work of sending out the wire wound around the basket in the tank from the tank outlet, but also to improve the line speed. An object of the present invention is to provide a speed control device for a wire rod that can accurately control the delivery speed even when there are sudden fluctuations in the speed.

[Means for Solving the Problems] The speed control device for wire rod according to the present invention includes a non-contact position detection means that detects the position of the wire rod near the exit of the feeding device that feeds out the wire rod and generates a position detection signal. , a speed detection means that detects the line speed of the fed wire and generates a line speed detection signal, and a speed that controls the speed of the wire so that the wire always comes to a fixed position based on the position detection signal and the line speed detection signal. A control means is provided.

[Operation] In the present invention, the position detection signal supplied from the position detection means is used as a dancer roll signal, and at the same time, the reference speed of the wire rod driving motor is determined based on the line speed detection signal supplied from the speed detection means. A motor speed setting voltage is obtained by using this motor speed setting voltage to control the speed of the wire so that the wire is always at a fixed position near the outlet of the delivery device.

[Embodiment] The drawing is a block diagram partially schematically showing an embodiment of the present invention. The delivery device 10 includes a tank 11
A turntable 12 installed in this tank 11, and a delivery motor 1 that is directly connected to this turntable 12 and rotates the turntable.
3 and a basket 14 placed on a turntable 12. Wire rod 20 is basket 1
4, and when the turntable 12 is rotated by the motor 13, the tank 1
It is sent out from the outlet 15 of 1. The speed control device for the wire 20 includes a non-contact position detection means 30 that detects the position of the wire 20 near the outlet 15 of the tank 11 and generates a position detection signal, and a non-contact position detection means 30 that detects the position of the wire 20 near the outlet 15 of the tank 11 and a wire that is sent out from the outlet 15 of the tank 11 to the outside. A speed detecting means 40 detects the line speed of the wire 20 and generates a line speed detection signal, and when a position detection signal and a line speed detection signal are supplied, the motor 13 and the wire rod and speed control means 50 for controlling the speed of 20. The position detection means 30 includes an industrial television camera 31 that photographs the wire 20 near the outlet 15 of the tank 1 through a peephole 16 provided in the tank 11, and an industrial television camera 31 that controls this industrial television camera 31 and controls the industrial television camera 31. A camera controller 32 that generates a video signal of the wire 20 photographed at 31, a monitor television 33 that reproduces and monitors the image of the wire 20 from the video signal supplied by the camera controller 32, and a camera controller 32.
The wire rod 20 is processed by processing the video signal supplied by the wire rod 20.
A video signal processing device 34 that generates a position detection signal of
It consists of Further, the wire rod 20 sent out from the outlet 15 of the tank 11 is taken up by a taking-off device 17 or a taping device (not shown), a Pb coating device, or an Al coating device, and comes into contact with a guide roller 41 in this embodiment. The speed detection means 40 is a wire rod 20
The above-mentioned guide roller 41 is rotated without slipping due to contact with the guide roller 4.
a rotary encoder 42 that is mechanically connected to the rotary encoder 42 and generates pulses with a frequency proportional to the line speed of the wire 20; and a line speed detection device 43 that outputs a line speed detection signal when a pulse is input from the rotary encoder 42. It consists of Furthermore, the speed control means 50 uses the position detection signal supplied from the video signal processing device 34 as a dancer roll signal, and at the same time determines the reference speed of the motor 13 from the line speed detection signal output from the line speed detection device 43, and controls the motor 13. A motor speed setting device 51 generates a speed setting voltage, and when the motor speed setting voltage is input, the speed of the wire 20 is adjusted according to the speed of the motor 13 so that the wire 20 near the outlet 15 of the tank 11 is always at a fixed position. and a motor controller 52 for controlling the motor.

Since the present invention is configured as described above,
In addition to using the position detection signal as a dancer roll signal, motor 1 is detected from the line speed detection signal.
By determining the reference speed of No. 3, a motor speed setting voltage is obtained, and the speed of the wire rod 20 is controlled as described above.

Note that as the speed detection means, a synchro generator (not shown) connected to the guide roller 41 may be used instead of the rotary encoder 42 and the line speed detection device 43. Also,
As the speed detection means, an industrial television camera such as in the position detection means 30 and a video signal processing device that processes the video signal of this industrial television camera to generate a line speed detection signal representing the line speed of the wire may be used. can.

[Effects of the invention] As explained above, according to the present invention, the following effects can be obtained.

(1) It is possible to automate the manual work that was traditionally done by visual inspection over a long period of time, which is effective in terms of labor savings.

(2) When the line starts and stops frequently or when the line speed changes rapidly, the detection speed can be controlled with high precision and responsiveness, preventing work errors caused by erroneous operations that tend to occur during visual inspection. can be prevented.

(3) Since the position of the wire rod near the outlet of the tank is detected in a non-contact manner, it is possible to prevent damage to the wire rod during delivery.

[Brief explanation of the drawing]

The drawing is a partially schematic block diagram of an embodiment of the present invention. 10: Delivery device, 11: Tank, 12: Turntable, 13: Delivery motor, 14: Basket, 15: Tank outlet, 16: Tank peephole, 17: Take-up device, 20: Wire rod, 30: Non-contact type position detection means, 31: industrial television camera,
32: Camera controller, 33: Monitor television, 34: Video signal processing device, 40: Speed detection means, 41: Guide roller, 42: Rotary encoder, 43: Line speed detection device, 5
0: Speed control means, 51: Motor speed setting device, 52: Motor controller.

Claims (1)

[Claims for Utility Model Registration] (1) In a device that controls the speed of a wire fed out from a feeding device or a wire wound around a winding device by driving a motor, the Non-contact position detection means detects the position of the wire near the entrance of the winding device and generates a position detection signal; and detects the line speed of the fed wire or the wire to be wound. The method further comprises a speed detection means for generating a detection signal, and a speed control means for controlling the speed of the motor and thus the wire so that the wire always comes to a fixed position based on the position detection signal and the line speed detection signal. Characteristic wire rod speed control device. (2) The speed detection means includes a guide roller, which is rotated by contact with the wire being sent out or the wire being wound, and which is mechanically connected to the guide roller and generates pulses with a frequency proportional to the line speed of the wire. a rotary encoder to
The wire speed control device according to claim 1, which includes a line speed detection device that outputs a line speed detection signal when the pulse is input. (3) The speed detection means includes a guide roller with which the fed wire or the wire to be wound comes into contact, and a synchronizer generator that is mechanically connected to the guide roller and generates a line speed detection signal representing the line speed of the wire. A wire speed control device according to claim 1 of the utility model registration claim. (4) The speed detection means includes an industrial television camera that photographs the wire being sent out or the wire being wound;
A wire rod speed control device according to claim 1, which includes a video signal processing device that processes the video signal of the industrial television camera and generates a line speed detection signal representing the line speed of the wire rod. (5) The speed control means uses the position detection signal supplied from the position detection means as a dancer roll signal, and at the same time determines the reference speed of the motor based on the line speed detection signal supplied from the speed detection means. Claims for registration of a utility model comprising: a motor speed setting device that generates a speed setting voltage; and a motor controller that controls the speed of the motor so that the wire near the entrance/exit is always at a fixed position based on the motor speed setting voltage. A wire speed control device according to any one of items 1 to 4.