JPS5987922A - Speed controlling device of leveler - Google Patents

Abstract

PURPOSE:To prevent a coil material from being stained with roll marks due to stopping of a leveler in rewinding a coil material such as a steel plate etc. and sending to a press machine after correcting curling, by adjusting operation speed of the leveler according to the quantity of loop between the leveler and a pinch roll. CONSTITUTION:When rewinding a coil such as a steel plate etc. and sending to a press for press working, the material is fed to a press machine by a pinch roll unit 2 after passing through a leveler 1 to correct curling of the coil material. In this case, a measuring roll 3 for measuring the length of the coil material and the first and the second detecting devices 6, 7 for detecting loop quantity of the coil material are provided between the leveler 1 and the pinch roll 2. When feeding of coil material by the pinch roll 2 stops, the loop quantity between the leveler 1 and pinch roll 2 becomes too large and the leveler 1 does not stop and is changed to creep speed. Accordingly, the roll material is not soiled by the roll marks due to stopping of the leveler, and the deterioration of quality due to roll marks can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a leveling speed control device that is used when a coil material supplied to a press is completely unwound and its curls are corrected.

With conventional levelers, the leveler was stopped each time the loop amount of 1L-C material accumulated between the fL pinch roller Unisoto and the leveler, which was operated in synchronization with the press, reached a predetermined amount. . Therefore.

Like this I/level pinch roller unit, it is operated intermittently, so every time the level stops, roll marks are left on the material, which has a negative effect on product quality. ζ. This, 1: Unaguchi・-
This is because the straightening of the material stops completely each time the leveler stops, and then the leveler is operated at high speed.In order to improve efficiency, the operating speed of the press should be increased.

Since it was necessary to increase the starting acceleration of the level after stopping, there was an inconvenience that roll marks were noticeable.

The present invention has been made in view of the conventional situation, and is designed to maintain a predetermined amount of loop acid stored between a leveler and a pinch roller unit, and to prevent the loop acid from reaching a predetermined amount when the loop acid reaches a predetermined amount. By providing a means to switch and control the operating speed of the level to the creep speed, the excessive loop amount can be reduced to 1.
Our aim is to provide a leveling speed control device that can prevent roll marks from forming on materials.

The invention will be explained in detail below on the basis of an illustrated embodiment υ.

A pinch roller unit 2 is disposed between a press (not shown) and a leveler 1. A pinch roller unit 2 is disposed to feed the coil material, which has been unwound by the leveler 1 and whose curls have been corrected, into the press. In front of the leveler 1, there is a measuring roll 3 that measures the length of the coil material sent out from the leveler 1, and a measuring roll 3 that measures the length of the coil material sent out from the leveler 1, and a measuring roll 3 that measures the length of the coil material sent out from the leveler 1, and a measuring roll 3 that measures the length of the coil material sent out from the leveler 1.
A loop amount detection means 6 and a second loop amount detection means 7 for detecting whether the loop amount is larger than a predetermined amount by a certain amount are provided.

Output f'1. from both these means and the press etc. The drive motors 4 and 5 of the level 1 and pinch roller unit 2 are controlled at variable speeds by a control device, which will be described later, in accordance with various signals. 8 is a pulse generator that detects the rotation amount of the motor 4 that drives the chopper/flatter 1; 9 is a pulse generator that detects the amount of rotation of the motor 5 that drives the pinch roller unino 12; Incidentally, each of the loop amount detection means is as follows.

For example, it is composed of a photoelectric switch or the like, but it may be replaced with a limit switch or the like.

The first control unit 11 that controls the drive motor 5 of the pinch roller unit l-2 receives the jx needle signal per time set by the pinch roller feed amount digital switch 10, and the start signal output from the pressy rule. signal 12 is supplied,
Coil material is fed into the press by a preset feed amount at the feed time of the press operation cycle, and a feed completion signal 15 is supplied to the - direction of the AND gate 14 when the feed is finished. .

Further, the output image number of the measuring roll 3 is supplied to the other side of the AND gate 14, and the material: stitch feed amount in the state where the feed completion signal is output OFF is supplied to the calculation unit 13 as a subtraction signal. I try to do that.

Then, the calculation section 13 subtracts the output value of the AND gate 14 from the output value (set feed amount) of the pinch roller feed amount digital switch 10, and sends this to the control section 18 of the level drive motor 4 as the feed amount 1 stage number. Supply as 1~. When the start signal 2 is supplied to 7, the coil is unwound and corrected by an amount corresponding to this feed mld number (/
c, and the detection level of the second loop detection means 7 is 1
When the Luzo calm of interest 1 increases, a stop signal is output from the control section 18 to the drive motor 4 based on the output of the means 7. Reference numeral 16 denotes an arithmetic unit that determines whether or not the set feed amount is appropriate, and 17 an output relay that outputs a press stop signal based on the output signal of the arithmetic unit 16.
It is.

In the configuration of varnish, set the amount of material feed per time with feed@f (dissode 10) [7, Manually control level 1 to center the material loop at the intermediate V-bell between both loop detection means 6. do.

In this state, when the press starts operating and the material feed start signal 12 is supplied from the press side, one car, one drive motor 4,
5 rotates to operate the level [and pinch roller unit 2].

When the pinch roller unit 2 has fed out the material by a preset amount, the material feeding completion signal 15 is output and the pinch roller unit 2 stops at the same time.

On the other hand, in the leveler 1, after unwinding and straightening the material by a certain amount, the 5 drive motor 4 is switched to the creep speed. Then, (the interest payment completion signal 15 is output)
, the next start signal 412 supplies the length signal of the material to be sent from level 1 at the creep speed of 1, which is sent from the AND gate 111 to the calculation unit 11, and this feed length is set to the value set by . This will be subtracted from Level 1's next Kiriri Okuri 1.

Therefore, if the leveler 1 is operated at the creep speed while the material supply is interrupted, there is no risk that the loop amount between the leveler 1 and the pinch roller unit 2 will become excessive. Level 1. This means that the amount of unwinding and straightening of the moon 71'4 is commensurate with the amount consumed by the press.

Incidentally, as in the embodiment, the rotation amount 1 of both drive mokes 4 and 5, that is, the momentum of the level 1 and the pinch roller unit 2, is detected by the pulse generator 8. It is not necessary to describe in detail that the control accuracy of the leveler and pinch roller can be increased by applying the food pack to the control unit 1.1.18.

Further, if the set value of the feed meter is extremely small and the amount of material t1 delivered due to the creep speed is large, it is determined that the set value is inappropriate and the external output relay 17 is activated to stop the press. In addition, if the loop amount becomes larger than the detection level of the second loop detection means 7 due to a control error, etc., the leveler 1 is completely stopped, but this should not happen at least while the press is operating. Since there are no roll marks, the frequency of roll marks is reduced, and the quality of pressed products can be greatly improved.

As explained above, one advantage of the present invention is that the leveler, which in the past repeatedly started and stopped in synchronization with the operation of the press, continues to rotate by repeating acceleration and deceleration. This eliminates the risk of roll 1-sticking caused by the straightening rolls, improving the quality of pressed products.

[Brief explanation of drawings]

The figure is a block diagram of one embodiment of the present invention. 1..L/Hair 1.0..Feed amount de.f.jis.inch 2.. Vincillo, -L: L knit
”1...Control unit 3...Measuring "L-Rule 1
2. Suffu-1/Signal 4...Level drive motor
13... Arithmetic unit 5... Pinch roller drive motor 14... AN'D gate 6'' first loop detection means 15... Feed completion signal 7゛°゛ second loop detection means J8. ...Control unit 8.9...Pulse generator patent ratio Applicant: AIDA Engineering Co., Ltd. Representative Patent Attorney Sui Nakayama (and one other person)

Claims (1)

[Claims] The first one is operated in synchronization with the operation of the press. At the speed of the leveler, which unwinds the coil material supplied to the pinch roller unit and corrects the curl, the material is accumulated between the leveler and the pinch roller unit. The leveling speed fii control device is provided with means for controlling the leveling operation speed to be switched to the creep speed when the loop amount reaches a predetermined amount 17 while holding the loop acid (H).