JPS5970498A - Control device for press working line - Google Patents

Abstract

PURPOSE:To eliminate the need for timing of all devices and to improve operability by operating the press and conveyor in the succeeding stage according to the operating condition of the device in the previous stage. CONSTITUTION:A circuit 2 which outputs a start signal for a conveyor, a circuit 3 which outputs a start signal for a press and a circuit 4 which outputs an operation signal for determining whether the press and conveyor can be operated or not are provided to a main control panel 1. Input interfaces 6a, 6b which are inputted with the start signal for the conveyor, the start signal for the press and the operation signal and output an operation signal, an operation signal for the press, a conveyance signal, and a fetch signal as well as storage devices 7a, 7b and central processing devices 8a, 8b are provided to auxiliary control panels 5a, 5b. After the start signal for the conveyor and the start signal for the press have been supplied from the panel 1 to the panels 5a, 5b, the operation signal is supplied from the auxiliary control panel in the previous stage to the auxiliary control panel in the succeeding stage.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control device for a press processing line in which a plurality of presses are connected by independent conveyance devices.

In a press processing line that connects adjacent presses via a conveyor device that carries in or takes out pressed products, conventionally the conveyor device has to operate in order to simultaneously start the presses and operate the conveyor devices at the same time. It was determined simultaneously using timing signals. For this reason, with conventional control devices, the configuration of the device becomes complicated, and it is extremely difficult to switch to tooth extraction operation, etc., so there is a problem that it is difficult to freely change the operation mode of the press processing line. Ta.

The present invention has been made in order to solve such conventional problems, and instead of using conventional timing signals, it is possible to determine whether or not the press and conveyance device of the relevant stage can be operated according to the operating state of the previous stage. It is an object of the present invention to provide a control device for a press working line that simplifies the control device without impairing reliability and at the same time allows the operating mode of the press working line to be easily changed.

Hereinafter, the present invention will be described in detail based on an illustrated embodiment.

In the figure, a main control panel l that controls the entire press processing line includes a conveyor start signal circuit 2 that outputs a conveyor start signal, a press start circuit 3 that outputs a press start signal, and a press start signal circuit 3 that outputs a press start signal. An operation signal circuit 4 is provided that outputs an operation signal that determines whether or not to operate, and supplies a transfer device start signal and a press start signal to sub-control panels 5a and 5b that control the presses and transfer devices at each stage, respectively. That's how it is.

The sub-control panels 5a and 5b are each composed of a microcomputer, and input a transfer device start signal, a puller start signal, and an operation signal to output the operation signal.

Input/output interfaces 6a and 6b that output press operation signals, conveyance signals, and takeout signals, and storage devices 7a and 7
b, and central processing units 8a and 8b. Then, after supplying the transfer device start signal and the press start signal output from the main control panel l to the respective sub-control boards 5a and 5b, the operation signal output from the preceding sub-control board is transmitted to the sub-control panel 5a and 5b. It is supplied to the board. Note that 9a and 9b are switches for manual operation.

In the above configuration, when the transfer device activation signal is output from the main control panel 1, each sub-control panel 5a, 5b reads the current operation signal and the completion of extraction from the storage device 7a, 7b, and stores it at a different address. Remember. At this time, if the operating signal is "1", a take-out signal is output, but if the operating signal is 0°, no take-out signal is output.

Further, if the content of the completion of extraction is l゛°, the carrier signal is output, but if it is in 04+, it is not output. When the take-out signal is output at the end of l cycle, the take-out completion is stored as "l", but when the take-out signal is not output, the take-out completion is stored as 0゛, and when the carrier signal is output, the take-out completion is stored as "1", and when the carrier signal is output, the take-out completion is stored as "1". When the carrier signal is not output by outputting the signal as l”°, the operation signal is not output.

On the other hand, if the conveyance signal is being output when the press start signal is input, the press operation signal will be output, but if the conveyance signal is not being output, the press continuous rotation signal will not be output.

Therefore, it is difficult to decide whether to take out or transport the pressed product using a timing signal or the like as in the past (transfer device, etc.).
There is no need to transmit signals indicating whether the press or the like can be operated, and the device can be simplified without impairing the reliability of the control device. In addition, when troubles such as operational errors occur,
There is no longer a need to go back to the main control panel and perform recovery operations as in the past, and the trouble can be resolved at the sub control panel stage where the trouble occurs, greatly improving operability.

By adding a manual operation switch as in the embodiment, it is possible to artificially set the operation signal, removal completion, etc., so it is possible to easily perform tooth extraction operations, etc. Can be diversified.

It goes without saying that the material confirmation signal outputted from the feeder can be used as the operation signal for the main control panel.

As explained above, according to the present invention, the next stage device is operated according to the operating state of the previous stage device, so there is no need to synchronize all the devices using timing signals etc. as in the conventional method. This eliminates this problem, making it possible to simplify the device and improve operability without compromising control reliability.

[Brief explanation of the drawing]

The figure is a block diagram of essential parts showing an embodiment of the present invention. l...Main control panel 2...Transfer device starting circuit 3...Press starting circuit 4...Operation signals 5a, 5
b... Sub control panel 6a, 6b... Input/output interface 7a, 7b.
...Storage devices 8a, 8b...Central processing unit Patent applicant AIDA Engineering Co., Ltd. Agent
Patent attorney Kiyoshi Nakayama (1 other person)

Claims (1)

[Claims] In a press processing line equipped with a main control panel that controls the entire line and a plurality of sub-control panels that control presses and transfer devices at each stage, at least a transfer device start signal,
A circuit for outputting press start signals and operation signals is installed in the main control panel, a circuit for inputting transfer device start signals, press start signals, and operation signals, and a circuit for outputting operation signals, press operation signals, conveyance signals, and take-out signals. It supplies both start signals outputted from the main control panel and the operation signal outputted from the preceding sub-control panel to the sub-control panel, and also controls the operation output from the main control panel. A control device for a press processing line, characterized in that a signal is supplied to a first-stage sub-control panel to control presses and conveyance devices at each stage.