KR19980066184U - Clutch and brake drive of press - Google Patents

Abstract

In the press, the clutch and the brake driving device of the press for detecting and controlling the clutch off in the slide rising section in which the brake is in a stopped state, in the press having the clutch and the brake for driving the slide, turn off the clutch at a certain angle of the slide. Since the clutch malfunction detection unit for detecting the operation, the brake control unit for outputting a control signal for operating the brake when the detected clutch malfunctions, and the brake drive unit for driving the brake by the control signal, the slide is raised It detects the clutch off in the section and operates the brake accordingly, and the clutch is turned off in the brake stop operation state, and the slide is lowered by the weight of the slide or the mold weight mounted on the slide. Disaster can be prevented.

Description

Clutch and brake drive of press

The present invention relates to a press machine tool, and more particularly, to a clutch and a brake driving device of a press for preventing malfunction of the clutch and the brake.

Typically, the press drives the slide by turning on the clutch after the brake is turned off, while the clutch is turned off after the brake is turned on to stop the operation of the slide.

As shown in FIG. 1, the sequence circuit diagram of the driving device of the press operated as described above includes a press start unit 10 for outputting a start signal for starting the press, and a brake (B) by the start signal of the press start unit 10. Initially driving the clutch (not shown) according to the brake drive unit 11 for operating or stopping (not shown) and the angle detection signal of the slide (not shown) and the output signal of the drive unit 11 of the brake. The first driving unit 12, the first clutch driving unit 13 for driving the clutch by the initial driving signal of the initial clutch driving unit 12, and a first angle for detecting the angle according to the operation of the slide and maintaining the driving of the brake and the clutch, respectively. It consists of the drive holding part 14 and the 2nd drive holding part 15. As shown in FIG.

Here, the press starting section 10 includes a press 1 stroke mode relay a contact RCK1 and first and second push buttons PB1 and PB2.

The brake drive unit 11 includes a brake stop relay exciting coil MB0, a first brake stop relay a contact RB1, and first and second brake stop solenoid valves SV-B1 and SV-B2 connected in parallel. Is made of.

In addition, the clutch initial drive part 12 consists of the 2nd brake stop relay a contact RB2 and the 1st slide angle detection relay a contact RA1.

In addition, the clutch drive unit 13 includes a clutch relay exciting coil MC and a clutch relay a contact RC1 and first and second clutch solenoid valves SV-C1 and SV-C2 connected in parallel.

Further, the first drive holding unit 14 is composed of the third brake stop relay a contact RB3 and the second slide angle detection relay a contact RA2, and the second drive holding unit 15 is the fourth brake stop. It consists of the relay a contact RB4 and the 3rd slide angle detection a contact RA3.

Here, the first slide angle detection relay a contact RA1 is turned on at an angle of 350 degrees to 170 degrees, and the second slide angle detection relay a contact RA2 is turned on at an angle of 170 degrees to 340 degrees. The third slide angle detection relay a contact RA3 is turned on at an angle of 170 degrees to 330 degrees.

Referring to the operation of the press driving apparatus according to the prior art configured as described above is as follows.

First, the first one-stroke mode relay a contact RCY1 of the press starting section 10 is turned on, and the first and second strokes are operated until the angle of the slide at which the user is located at the top dead center (350 degrees) reaches about 170 degrees, the bottom dead center. When the second push buttons PB1 and PB2 are turned on, the brake stop relay exciting coil MB of the brake drive unit 11 is excited.

When the brake stop relay exciting coil MB of the brake drive unit 11 is excited, the first brake stop relay a contact RB1 is turned on to operate the first and second brake stop solenoid valves SV-B1 and SV-B2. Therefore, the brake operation is stopped.

As the brake initial relay exciting coil MB is excited, the clutch initial drive unit 12 turns on the second brake stop relay a contact RB2, and the first slide angle detection relay a contact RA1 turns on the clutch. Output the initial drive signal.

In the clutch drive unit 13, the clutch relay excitation coil MC is excited by the initial driving signal of the clutch initial drive unit 12, and the clutch relay a contact RC1 is turned on, so that the first and second clutch solenoid valves SV connected in parallel are connected. -C1, SV-C2) are operated to operate the clutch.

Accordingly, when the slide is operated and the position angle of the slide reaches 170 degrees of the bottom dead center, the user turns off the first and second push buttons PB1 and PB2, and the first slide angle detection relay a contact RA1. Stops the brake due to the second slide angle detection relay a contact RA2 of the first drive holding portion 14 and the third slide angle detection relay a contact RA3 of the second drive holding portion 15 even if is turned off. And the operation of the clutch is self-holding.

That is, the second drive holding unit 15 turns on the fourth brake stop relay a contact RB4 by the brake stop relay exciting coil MB, and when the slide reaches the bottom dead center, the third slide angle detection a contact ( RA3) is turned on to maintain the operation of the clutch, and when the slide angle reaches 330 degrees, the third slide angle detection relay a contact RA3 is turned off to stop the operation of the clutch.

When the third brake stop relay a contact RB3 is turned on by the brake stop relay excitation coil MB and the slide reaches the bottom dead center, the first drive holding unit 14 contacts the second slide angle detection relay a contact. When RA2 is turned on to maintain the brake stop operation and the slide angle reaches 340 degrees, the second slide angle detection relay a contact RA2 is turned off to turn off the first and second brake stop solenoid valves SV-B1. The operation of the SV-B2) is turned off and the brake is operated.

Therefore, the brake is operated when the angle of the slide reaches 330 degrees, the clutch is first stopped, and then reaches the slide angle of 340 degrees.

The press drive device according to the prior art has a brake as the first and second clutch solenoid valves are turned off at 170 degrees and 330 degrees after the clutch operation is stopped due to the third slide angle detection a contact or the contact point of the clutch excitation coil. There is a problem in that the operation of the clutch in the stopped state can cause a disaster in the operator or the press peripheral device.

Accordingly, the present invention has been made to solve the problems of the prior art, the present invention is to provide a clutch and brake drive of the press for detecting and controlling the clutch off during the slide lift by the clutch off detection unit The purpose is.

1 is a sequence circuit diagram showing a press driving device according to the prior art;

2 is a sequence circuit diagram showing a press driving device according to the present invention.

Explanation of symbols for main parts of the drawings

10: press starting section 11: brake driving section

12: initial clutch drive unit 13: clutch drive unit

14: first drive holding portion 15: second drive holding portion

40: clutch malfunction detection unit 41: brake control unit

The clutch and brake driving apparatus of the press according to the present invention, in the press having a clutch and a brake for driving the slide, the clutch malfunction detection unit for detecting the off operation of the clutch at a predetermined angle of the slide, and the brake when the malfunction of the detected clutch It is characterized in that it comprises a brake control unit for outputting a control signal for operating the brake drive unit for driving the brake by the control signal.

Hereinafter, with reference to the accompanying drawings a preferred embodiment of the clutch and brake drive of the press according to the present invention will be described in detail.

2 is a sequence circuit diagram of a press driving device according to the present invention.

Referring to FIG. 2, a configuration of the clutch malfunction detection unit 40 for detecting the off operation of the clutch (not shown) in the rising section of the slide (not shown), and the brake for detecting the off operation of the clutch ( And a brake control unit 41 for outputting a control signal for operating the control signal (not shown).

Here, the clutch malfunction detection unit 40 includes a fourth slide angle detection relay a contact RA4 and a clutch relay b contact RC2, a delay relay exciting coil MD, a delay relay a contact RD1, and a timer relay. It consists of an excitation coil (MT). At this time, the fourth slide angle detection relay a contact RA4 is turned on at an angle of 170 to 335 degrees at which the slide is raised.

In addition, the brake control part 41 consists of timer relay b contact RT1.

Referring to the operation of the drive device of the press according to the present invention configured as described above are as follows.

First, the press 1 stroke mode relay a contact RCY1 of the initial press driving unit 10 is turned on, and the first position is reached until the angle of the slide located at the top dead center (350 degrees) by the user reaches about 170 degrees, the bottom dead center. When the second push buttons PB1 and PB2 are turned on, the brake stop relay exciting coil MB of the brake drive unit 11 is excited.

When the brake stop relay exciting coil MB of the brake drive unit 11 is excited, the first brake stop relay a contact RB1 is turned on to operate the first and second brake stop solenoid valves SV-B1 and SV-B2. Therefore, the brake operation is stopped.

As the brake initial relay exciting coil MB is excited, the clutch initial drive unit 12 turns on the second brake stop relay a contact RB2, and the first slide angle detection relay a contact RA1 turns on the clutch. Output the initial drive signal.

In the clutch drive unit 13, the clutch relay excitation coil MC is excited by the initial driving signal of the clutch initial drive unit 12, and the clutch relay a contact RC1 is turned on, so that the first and second clutch solenoid valves SV connected in parallel are connected. -C1, SV-C2) are operated to operate the clutch.

Accordingly, the slide is operated so that the position angle of the slide reaches 170 degrees of the bottom dead center so that the first and second pushbuttons PB1 and PB2 are turned off by the user and the first slide angle detection relay a contact RA1 is turned off. The stop operation of the brake and the clutch are driven by the second slide angle detection relay a contact RA2 of the first drive holding unit 14 and the third slide angle detection relay a contact RA3 of the second drive holding unit 15. The operation is self-sustaining.

That is, the second drive holding part 15 is turned on by the brake stop relay excitation coil MB, and the fourth brake stop relay a contact RB4 is turned on. When the slide reaches the bottom dead center, the third slide angle detection relay a contact is made. When RA3 is turned on to maintain the operation of the clutch and the slide angle reaches 330 degrees, the third slide angle detection relay a contact RA3 is turned off so that the first and second clutch solenoid valves SV-C1, SV -C2) is turned off, thus stopping the clutch operation.

When the third brake stop relay a contact RB3 is turned on by the brake stop relay excitation coil MB and the slide reaches the bottom dead center, the first drive holding unit 14 contacts the second slide angle detection relay a contact. When RA2 is turned on to maintain the brake stop operation and the slide angle reaches 340 degrees, the second slide angle detection relay a contact RA2 is turned off to turn off the first and second brake stop solenoid valves SV-B1. The operation of the SV-B2) is turned off and the brake is operated.

On the other hand, the malfunction detection unit 40 is the clutch relay excitation coil MC and the clutch relay a contact in the slide rising section before the third slide angle detection relay a contact RA3 of the second drive holding unit 15 is turned off ( When the clutch is turned off due to a failure or malfunction such as RC1), the clutch relay b contact RC2 is turned on while the fourth slide angle detection relay a contact RA4 is on, so that the delay relay exciting coil MD is turned on. do. When the delay relay exciting coil MD is turned on, the delay relay a contact RD1 is turned on and the timer relay exciting coil MT is excited after a predetermined time, thereby outputting a malfunction detection signal of the clutch.

In addition, the brake control unit 41 turns off the timer relay b contact RT1 by the clutch malfunction detection signal output by the timer relay excitation coil MT, so that the first and second brake stop solenoid valves of the brake drive unit 11 are turned off. Turn off (SV-B1, SV-B2) to operate the brake.

The clutch and brake driving apparatus of the press according to the present invention can detect a malfunction in which the clutch is turned off in a slide rising section and operate the brake at that time.

Therefore, the clutch is turned off in the brake stop operation state, and the slide is lowered due to the slide weight or the mold weight mounted on the slide, thereby preventing an accident occurring in an operator or a press peripheral device.

Claims (4)

In a press having a clutch and a brake for driving a slide, Clutch malfunction detection unit for detecting the off operation of the clutch at a predetermined angle of the slide; A brake control unit which outputs a control signal for operating the brake when the sensed clutch malfunctions; Clutch and brake driving apparatus of the press, characterized in that it comprises a brake driving unit for driving the brake by the control signal. The method of claim 1, The constant angle is a clutch and brake drive device of the press, characterized in that the section in which the slide is raised by the clutch. The method of claim 1, The clutch malfunction detection unit outputs a malfunction detection signal according to a slide position detection unit detecting a rising section of the slide, a clutch detection unit detecting an off operation of the clutch, a detection signal of a slide position detection unit, and a detection signal of the clutch detection unit. Clutch and brake driving device of the press, characterized in that consisting of a malfunction signal output. The method of claim 3, wherein The malfunction detection unit is a clutch and brake driving device of the press, characterized in that configured to include a delay timer relay unit for outputting a delay for the malfunction detection signal for a predetermined time.