JPS5950977A - Automatic fixed length feed device for strip welding - Google Patents

Abstract

PURPOSE:To make a weld zone of a strip material coincide with the center line of a trimmer device, and to remove completely a fin, by drawing the strip material and eliminating a strain in the course of butt welding of both preceding and following strip materials, and thereafter, moving it to the trimmer device. CONSTITUTION:A preceding strip material S1 and succeeding strip material S2 are clamped by fixing side and moving side electrode devices 2, 3, and flash welding of the end face is started. Subsequently, upper and lower clamps 9a, 9b of a transfer are closed, and the strip material having a sag is drawn in the line advancing direction and is flattened. In this case, a distance l2 moved from an original position P of the transfer 9 is detected by a detector 10, is stored in an operating machine 1, and a moving extent S=L+l1+l2 of the transfer 9 is calculated from a distance of set l1 and L. Subsequently, the transfer 9 is moved so that it hits against a stopper 15 and stops when it reaches the moving extent S. In this way, a strip weld zone W is fed to a trimmer device 8, the strip material is moved backward by the moving side electrode device 3, and the weld zone W is drawn back, eliminating a strain, and is made to conform with the trimmer center line.

Description

[Detailed Description of the Invention] The present invention connects the leading and trailing IJ tube phases that are continuously fed on the line one after another, and sends the welded part to the next cutting and shaping position. When removing welding burrs attached to a welded part, the method automatically feeds the strip material by a fixed length so that the centerline of the welded part coincides with the centerline of the cutting and shaping device (hereinafter referred to as the trimmer device). It pertains to the equipment for carrying out this.

FIG. 1 is a schematic diagram of a general flash welding machine for connecting strips, in which S1 and S2 indicate leading and trailing strips 44, and arrows (→) indicate the IJ tube traveling direction. (2) is the fixed side electrode device;
) (2b) is attached to the base (4) so that it can be opened and closed freely.
) is supported by a frame (5) fixed to the frame (5).

(3) is the movable side electrode device, and its upper and lower electrodes (3a) 2
- (31)) is supported by a frame (7) which opens and closes in the same way as the 77 and moves forward and backward on the base by means of a hydraulic cylinder (6). One of the ends of both strips H to be connected is clamped by the second and lower electrodes (2a) (2b) on the fixed side, and the other is clamped by the second and lower electrodes (3a) on the moving side.
) (31)).

The movable electrode device (3) is operated by a fluid pressure cylinder (6).
1f forward/backward. For flannel welding, the movable side electrode device (3) is brought close to the fixed side electrode device i', 'i, C2), and from the point where the end surfaces of both strips 4'' are gradually brought into contact, a flash is applied with contact type R, 8. Jump one step, and the heat generated causes welding! When heated to In, j
iii) l) Weld by applying a strong pressure between the protrusions.

After welding, the transfer device (9) sends the welded portion to the cutting position of the next trimmer device (8), where the cutting blade (8a>(81)) removes the burr on the welded portion. (9a) (9b) is above the transfer device.
This is the lower clamp.

Conventionally, when removing weld burrs attached to a welded part of a strip material, the strip material is generally moved by a transfer device, and the welded part is stopped at a trimmer shaping position i4 to be cut, as shown in Fig. 1. Or, or
The welding area is not moved from the welding position, but the trimmer device is moved from the side of the electrode device toward the weld line to cut the weld beam.

However, in the former case, there will always be slack in the strip material A between the electrode position and the trimmer device, so once the welding part is stopped at the trimmer center line, it is necessary to align the trimmer center with the weld line. Even with such fine adjustment, there is still a drawback that variations in centering cannot be eliminated.

On the other hand, in the latter case, S) 4R11 of IJ knob A4
For I or more than 1000, a C-shaped frame with long arms has been used, but it had its limitations.

In other words, if the arms of the frame are long, the frame may oscillate laterally while driving, or the cutting blade of the trimmer device may often shift from the weld line, causing defects such as poor cutting. In order to prevent this, please follow the steps below to prevent this.
/j% is a guide device fi! near welding position 1.j! Although we have not yet taken miraculous countermeasures such as installing a kite device, if we distribute the guide rail and the trigger part as a kite device, it will not be affected by spatter during welding (and the kite device can be installed close to the welding location) This had many disadvantages, such as forcing a 4R construction design that was quite limited in terms of space.

The present invention has developed a device that can automatically and accurately feed the welded part of strip 4.A to the center position of the next trimmer device.
Objective 1-1 is to eliminate the second drawback.

The feature is that the slack in the strip 44 that occurs between a predetermined welding position and the transfer device is removed by pulling the strip 44 with the transfer device during welding, and when the strip 44 is stretched, the transfer device can be moved. Transfer device from the amount (/+), the distance (11) from the center of the strip weld to the tip surface of the fixed side electrode device, and the distance (L) from the tip surface of the fixed side electrode device to the center of the trimmer device. The amount of movement (S) of Electrode Device) The object of the present invention is to provide a device for aligning the trimmer center of a strip weld by retracting the IJ knob 4A and pulling the strip material again to remove the slack.

Hereinafter, examples of the apparatus of the present invention will be described in Section 21
I'll explain more.

In the arrangement A1°4 on the line in Fig. 2, the trimmer device (8) is placed on the exit side of the flannel welding machine (1), and then the transfer device (9) is placed in that order, as in Fig. 1. There is. (1 is the original position of transfer device i:1j (9) (
A detector for detecting the amount of movement (12) from P-I)), (
11) is the calculation (shallow, L: distance from the extension line (B-B) of the tip surface of the fixed side electrode device e"1. to the center line (0-O) of the trimmer device (8) and I! The distance from the center line (A-A) of the lvarnish l-IJ joint weld (W) to the extension line (B-B) of the above-mentioned pre-assembled surface is set in advance within the two-part operation. (12) is the transfer device ii” (9
) is a stopper device that regulates the amount of movement of the hydraulic source (
13) and 'I'IJ, magnetic moon stain valve (14), stopper (15), and this stopper σ-to-movement cylinder (I6)
It consists of

Next, the operation of the present invention will be explained.

Leading strip JA' (Sl) and trailing strip 4. U
s2) is connected to line ``2'' by v8 and connected to +1Wj by a welding station. In the case of "Welding" - Cheng,
End of leading strip 4'A' (St) 91°11 and after? The tip of the j-slip tip (S2) is determined according to the plate thickness by the fixed side and movable side type (device C2X3), respectively. M
It is clamped while protruding from the jjjlj plane. Then, flash welding of both strips 911 is started by the forward movement of the movable electrode device.

So far ゛(jff floor flash consent J2. and 111
1st class'! ΣIt doesn't hurt.

Now, in the present invention, during the welding described in "-", the seventh F clamp (91a) (91J) of the transfer device is closed, and the slack strip 64 is stretched and flattened in the line advancing direction.

At this time, the helix position fA2 (P) of the transfer device (9)
Detect the distance (12) moved from the detector (1), and enter that value in the calculation mode (n). Distance i'!
I 7J) from the amount of movement (S) of the transfer device, S=
It is calculated from the equation L+7++z2.

Then, move the transfer device (9) to move the strip 71] If! Advance i. Then, when the transfer device dopa reaches a predetermined movement jti:(S), the drive cylinder (16) of the stopper device is actuated so that the clamp (91) hits the stopper (15) and stops.

Then, the strip weld (W) is removed by a trimmer device (8).
) The old one is sent. However, due to the slackness of the strip H, the center of the welded part (W) is not aligned with the trimmer center line 'C, so at the stage of υ, the second strip is clamped by the movable electrode ufi #13. Remove strain by retracting by a predetermined amount.

In this way, the welded part (W) can be slightly pulled back and aligned with the trimmer center i', a while keeping the slack at 4[degrees]jl.

Therefore, the trimmer equipment f+! Accurately align f to the welding line l[)
I completely removed the welding beam because I had to move it around.
IJ can be removed.

As described above, the present invention is capable of welding both leading and trailing strips (fJ'l')fi by feeding the welding part of the leading and trailing parts (4) into the next trimmer device mj, I. When cutting and removing the beam, remove the strip of line 1-1 (crossing) during butt welding of the IJ joint.
In order to remove the stiffness, the tension force acting in the direction of line movement is reduced by -1-j as I:lLt.

Next, there is a step of transferring the strip melt to the next trimmer device and +4') removing the slack from the strip on the IJk line. The pulling force is applied to the L-ij process, and the trimmer center j: I-
j' + mating device 1; the strip weld is completely automated to the center 1 of the trimmer device 11 of 111'lJ.
Since it can be made to be companded to "j!", welding burrs can be reliably cut and removed, and the positioning required for fine adjustment like IIt is perfect (without worry, [7] Plate + lj wide space IJ pothole is also a problem (post-welding processing can be done.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram of a general flash welding diagram for strip connection i6/lj. FIG. 2 is a schematic explanatory diagram showing the principle of the apparatus of the present invention. (1) Flash welding machine (2) Solid body side electrode device (3) ijJ moving side mold side electrode device (8) Trimmer device (9) Transfer device ( 1o)...
The amount of movement i' is ilj 4rrr (11)...Calculation (12)・S]・Brim device (Sl)・・
・Preceding strip (S2)...? & (] Strip ((Ministry of Invention, Juji Ibuka)

Claims (1)

[Claims] A welding machine that holds leading and trailing side II tubes continuously fed in line 2 by fixed side and moving side electrode devices and connects their butt ends, and an output of this welding machine. A trimmer device disposed on the side, a transfer device h'' that applies a driving force acting in the line advancement j1 direction to the strip l-IJ material on the line for feeding the welded part to the trimmer device, and both strip users. During butt welding of
Means for detecting the movement ll1 (12) when the transfer device is advanced by 01i and tension is applied to the IJ knob, and the movement At (72) and the fixed side from the center line of the strip welding part? The movement of the transfer device ff1 (S
), and means for stopping the transfer device at the movement amount (S), and after moving the transfer device based on the movement amount (S),
Automatic sizing feed for strip welding, characterized in that the center line of the strip weld is aligned with the trimmer center line by retracting the strip material by a movable side electrode device and applying tension to the strip material again. Device.