JPH0747191Y2 - Signal transmission device for press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a signal transmission device of a press machine that transmits signals between various sensors and actuators provided on a slide and the press body.

[Conventional technology]

Conventional press machines are equipped with slides that can be moved up and down by a slide drive mechanism.The slides include solenoid valves that open and close various sensors such as proximity switches and limit switches that detect the position of the die clamper, and die clampers. Such an actuator is provided.

[Problems to be solved by the device]

Conventionally, a cable is connected between the slide and the press body in order to transmit signals detected by various sensors to the press body side and to transmit a control signal from the press body side to the actuator.

For this reason, the cable also moves up and down each time the slide moves up and down, causing the insulation material of the cable to prematurely wear and lowering the insulation performance. There was a problem.

Further, as the number of various sensors and actuators has increased, the number of cables for transmitting signals has also increased, and there has been a problem that a large number of man-hours are required for maintenance and management of cables.

The present invention has been made for the purpose of improving the above-mentioned inconvenience, and provides a signal transmission device of a press machine capable of wirelessly transmitting a signal between a slide and a press body, and a cable for transmitting a signal is provided. It has been abolished.

[Means and Actions for Solving the Problems]

In order to achieve the above-mentioned object, this invention is a press machine in which various sensors and actuators are provided on a slide that can move up and down, and a slide side signal transmission unit is provided on the slide and a press body side signal transmission unit is provided on the press body. Is provided, and signals are transmitted and received wirelessly between these signal transmission parts, and a current collector is provided on the sliding part between the press body and the slide, and the slide side is pushed from the press body side through the current collector. It is designed to supply power to the signal transmission part, etc., and since the cable for signal transmission and the cable for power supply that connect between the press body and the slide are not required, the cable can be moved quickly by the vertical movement of the slide. It does not deteriorate or wear out.

〔Example〕

 An embodiment of the present invention will be described in detail with reference to the drawings.

In the figure, reference numeral 1 denotes a press main body, which has a crown 1a accommodating a slide driving mechanism (not shown) in the upper part, and a slide 2 which is vertically moved by the slide driving mechanism is provided below the crown 1a.

Various sensors 3 and actuators 4 are provided in the slide 2, and the sensors 3 and actuators 4 are mounted on the slide 2 and have a slide-side signal transmission unit 5 provided thereon.
To a signal line 6.

The slide side signal transmission unit 5 is provided below the crown 1a.
A press main body side signal transmission unit 7 is provided at a position facing the press main body side.

As shown in FIG. 2, the slide-side signal transmission unit 5 converts the parallel signals input from the various sensors 3 into serial signals and sends them to the transmission unit 9 in the parallel / serial converter 8.
And a serial / parallel converter 11 for converting a serial signal received by the receiving unit 10 into a parallel signal and sending the parallel signal to the various actuators 4.

On the other hand, the press main body side signal transmission section 7 includes a reception section 15 for receiving a modulated wave 14 such as light or radio waves transmitted from the transmission section 9 of the slide side signal transmission section 5, and a reception section of the slide side transmission section 5. A transmitting unit 16 for transmitting the modulated wave 14 to the 10 is provided.

The serial signal received by the receiving unit 15 is converted into a parallel signal by the serial / parrel converter 17, and then input to the control device 18 constituted by the sequencer via the signal line 19.

Further, various control signals issued by the control device 18 are transmitted through the signal line 19
To the parallel / serial converter 20 and the parallel signal is converted into a serial signal and then sent to the transmitter 16. The transmitter 16 transmits the modulated wave 14 to the receiver 10 of the slide side signal transmitter 5. It is supposed to be done.

On the other hand, reference numeral 22 in the drawing denotes a current collector provided between the press body 1 and the slide 2, and has a conductor 22a laid along the moving direction of the slide 2 on the upright 1b side of the press body 1.

The power supply line 2 is connected to the conductor 22a and the signal transmission section 7 on the press body side.
Power is being supplied via 3.

On the slide 2 side, there is provided a current collecting brush 22b which is in sliding contact with the conductor 22a, and the current collecting brush 22b and the slide side signal transmission section 5 are connected by a power supply line 23 '.
Power source power is supplied to the slide-side signal transmission unit 5 via the current collector 22.

In the above embodiment, the signal transmission between the press main body side signal transmission unit 7 and the control device 18 is performed by parallel signals, but it may be performed by serial signals as shown in FIG.

Further, in each of the above embodiments, the discrete ON / OFF signal is used, but the analog signal can be transmitted by using the analog / digital converter.

[Effect of device]

As described above in detail, the present invention has the signal transmission section provided on the press body and the slide, respectively, and the signal transmission is performed wirelessly by using light, radio wave or sound wave. There is no need to connect a cable to transmit signals between the slide and the slide.

In addition, since a current collector was provided in the sliding part between the press body and the slide, and power was supplied to the signal transmission part on the slide side via this current collector, the press body and slide were connected. It also eliminates the need for power supply cables.

This prevents the cable for signal transmission and the cable for power feeding from being worn down, resulting in deterioration of insulation performance and disconnection due to the vertical movement of the slide. It will be further improved, and since it is not necessary to maintain and manage the cable, the number of man-hours required for maintenance and management can be significantly reduced.

In addition, since the current collector is provided on the sliding part between the press body and the slide, the current collector can be installed without major modification of the existing press, and the signal between each signal transmission part can be installed. If the transmission is performed by using a serial signal, it is less likely to be affected by noise or the like generated during the press operation, so that the safety is further improved.

[Brief description of drawings]

The drawings show an embodiment of the present invention. FIG. 1 is a schematic view of a press body, FIG. 2 is a block diagram of this apparatus, and FIG. 3 is a block diagram showing another embodiment of the apparatus. Reference numeral 1 is a press body, 2 is a slide, 3 is sensors, 4 is an actuator, 5 is a slide side signal transmission unit, 7 is a press body side signal transmission unit, and 22 is a current collector.

Claims (2)

[Scope of utility model registration request] 1. A slide 2 which can be moved up and down, and various sensors 3
And a press machine equipped with actuators 4,
The slide 2 is provided with the slide side signal transmission section 5, and the press body 1 is provided with the press body side signal transmission section 7 so that signals are wirelessly transmitted and received between the signal transmission sections 5 and 7. A signal of a press machine in which a current collector 22 is provided at a sliding portion between the slide 1 and the slide 2, and electric power is supplied from the main body 1 of the press to the signal transmitter 5 on the slide 2 side through the current collector 22. Transmission equipment. 2. The signal transmission device according to claim 1, wherein the signal transmission between the signal transmission unit 7 on the press main body 1 side and the signal transmission unit 5 on the slide 2 side is performed by a serial signal.