JPS60231585A - Strip connecting device - Google Patents

Abstract

PURPOSE:To reduce the area for installation remarkably and to make laser beam welding with high accuracy by arranging a clamper, a shear, a laser beam welding device and an electrode for welding on the same base stand. CONSTITUTION:The rear end and front end of a preceding strip 1a and succeeding strip 1b are stopped in blade width of a shearing device 34, and centering is made by a side guide device. Then, the first clamper 10 and the second clamper 12 are closed and strips 1a, 1b are clamped and cut by the shearing device 34. End faces of the two strips are butted. A laser beam working head runs with a laser beam oscillator and a laser beam transmitting device from the back of direction that intersects the line and welding is performed. When removing reinforcement of the weld zone, a cylinder is operated to stop the weld zone between the first and third clampers 10, 20, and reinforcement is cut by trimmer cutting tools 52, 53.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a strip connection device that cuts the ends of a strip and performs laser beam welding or flash welding between the two ends.

[Prior art]

Conventionally, this type of device has been disclosed in Japanese Patent Application Laid-open No. 52-61143M, and generally had the configuration shown in FIG.

This figure is a schematic diagram of a steel process line. In order to pass the strip continuously, the rear end of the leading strip (1a) and the tip of the trailing strip (lb) must be connected at the input side of the line. There is a need. Laser beam welding or flash welding has been used as a means for this, depending on the type of steel.

The conventional one uses a payoff reel (
2) and the processing device (6) and the recoiler (7), there is a jarring device t31. A laser beam welding device (4) and a flash welding device 15) are installed independently.

Next, the operation of the conventional device will be explained.

In the figure, in the case of flash welding, the strips (1a) (1b) fed out from the payoff reel (2)
The ends of each strip are cut by a jarring device (3), and then the strips are transported to a flash welding position and welded.

On the other hand, in the case of laser beam welding, the strip (l
a) (lb) was transported to the laser beam welding device (4), the rear end and the front end were cut by a jarring device with a built-in welding rod, and welded at that position.

Both welded strips (1a) αb) pass through a processing device (6) and are wound up on a recoiler (7).

Conventional strip connection devices have a jarring device, a laser beam welding device, and a flash welding device installed independently, and therefore have the disadvantage that they occupy a very large area in the line direction.

Modern steel process lines run many types of steel on the same line, but it is best from a productivity standpoint to use laser beam welding for high carbon steel, silicon steel plates, etc., and flash welding for ordinary steel. .

In other words, flash welding can weld common steel at high speed, and laser beam welding can achieve the highest productivity on a process line for special steels where the quality of welded joints would be a problem if flash welded.

This invention was made in view of the above, and the first to third clampers, shears, laser beam welding equipment r, and flash welding electrodes are arranged on the same base, and the first to third clampers, shears, laser beam welding equipment r, and flash welding electrodes are arranged on the same base, and the By configuring the other strip to be welded with a laser beam, the installation area can be greatly reduced, and a strip connecting device that can perform laser beam welding with high precision is provided.

The figures will be explained below. In Figures 2 to 8,
(la) (lb) are the same as before. (8) is a base, (9) is a frame provided on the base (8), 00)
consists of a lower metal fitting (10a) and a lower metal fitting (10b) installed on a base (8).
0a) can move up and down. (11) is the frame (
9) drives the lower metal fitting (10a). +12 is a second clamper consisting of lower metal fittings (12a) and (12b) provided on the base (8) so that it can move toward or away from one end side of the first clamper (10); The metal fitting (12a) can be moved in the vertical direction. 1131 is a cylinder provided on the base (8),
Drive the lower metal fitting (12a). (14) is a cylinder provided on the base (8), which drives the second clamper 121 in the left-right direction toward the plane of the paper.

(The old one was an adjustment mechanism installed on the base (8) and driven by a cylinder (1B+), and was configured so that when it moved to the left, the top surface went down, and when it moved to the right, the top surface went up. u71 was an adjustment mechanism ( ] A rail provided on the top surface of 9, which is subordinate to the vertical movement of the adjustment mechanism αQ. (The fence is a movable trolley placed on the rail Uη via wheel sowings, and can be moved in the horizontal direction on the paper. ■ is a third clamper consisting of a lower metal fitting (20b) provided on a movable trolley (181) facing the other end of the first clamper 00, and the lower metal fitting (20a) 1-F l-
1111 The island Su-wi I- is glazed with r-melting to the servant girl white
1 Drive the lower metal fitting (20a) with the F-controlled cylinder. (2) Inside is a conductor fixed to each lower metal fitting (10a) (20a), (to) is fixed to each lower metal fitting (10a) (20a) electrically connected to each conductor track. The inlet and outlet electrodes □□□ are welding transformers provided on the lower metal fitting (10a) of the first clamper aα, and one terminal is connected to the conductor ■. The punishment is a tulip-shaped contactor connected to the other terminal of the transformer (4), +
Reference numeral 281 denotes a tulip-shaped contactor that pairs with the contactor (4) provided on the lower metal fitting (20a) of the third clamper (4), and is connected to the conductor @ via the flexible conductor (C). (This is a cylinder for attaching and detaching both contactors (4)■, and is provided on the lower metal fitting (20a).(31)
is the cylinder that drives the moving cart t181, □□□ is the stop mechanism that determines the welding upset position, (2) is the stopper that comes into contact with the stop mechanism, (to) is the upper blade (34a)
This is a jarring device consisting of a lower blade (34b) and a lower blade (34b), which are respectively provided on a frame (9) and a base (8). Kasumi is a cylinder that drives the jarring device f34) in the vertical direction, and is fixed to the frame (9). (To) (To)
is a side guide device that centers each strip (la) (lb), +3111 +39) is an index clamper that holds each strip αa) (lb),
+401 +41) is for each index clamper (2) (
39), +42++431 is a cylinder that drives each index clamper cic (91) in the approaching or opposite direction.

(44) is a rail provided on the base (8), (45)
1 is a laser beam oscillator that runs on a rail (441) at the wheel throat and is driven by a cylinder (4'rl).

(碍 is the laser beam transmission device, +49) is the laser beam processing head, ■ is the guide rail provided on the frame (9), (51) is the lower metal fitting (10) of the first clamper 00.
The six guide rails provided in b) are a pair of trimmer bits, and are connected to each other by brackets (154). Kasumi is both trimmer bits j52 (the cylinder that drives 531, 15G1 (57) is the first clamper α0)
and the respective lifting guides of the third clamper ①, and ① is the lifting guide of the jarring device (toward).

Next, the operation will be explained. In FIGS. 2 to 8, the case of laser beam welding is as follows. That is, the rear ends and tips of the leading strip (1a) and the trailing strip (1b) are respectively stopped within the blade width of the jarring device (to),
Centering is performed using the side guide device C161@.

After that, the first clamper (1α) and the second clamper (
121 closed and clamp the strip (la) (lb). Then, the jarring device (341) is operated to cut the strips (la) (lb). When the cutting is completed, the upper blade (34a) and the lower blade (34b) are opened, and the shearing device is in the open state. The second clamper (13) moves to the first clamper (lot side), and the surfaces of the leading strip (1a) and the trailing strip (1b) (1) are butted against each other with the precision required for the board.

Along this cutting line, the laser beam processing head (4ω) runs together with the laser beam oscillation device j451 and the laser beam transmission device (4 seconds) to perform welding from the rear surface in the direction intersecting the line.

When welding is completed, the laser beam processing head (49) starts returning to its original position, and at the same time both clampers (10) a
4 is opened and the threading of the strip Qa) (lb) begins. When removing excess welding, clamp and hold the strip (1a) with the exit index clamper ■, and operate the cylinder (to) to remove the first strip (1a).
It is also possible to stop the welding part between the third clamper (10) and the third clamper (201) and perform excess cutting with the trimmer bit.

Next, if flash welding, the leading strip (1
The process of cutting a) and the trailing strip (1b) is the same as laser beam welding. The difference from laser beam welding is that the inlet index clamper and the outlet index clamper (38) are both closed. That is, after cutting, the first clamper (10) and the second clamper (121 are respectively in between, the leading strip (1a) is operated by the exit index clamper (support)), and the trailing strip (1b) is operated by the input index clamper (support). □□□) respectively to the flash welding position, and then the third clamper ■ and the first clamper σ(
Clamp and hold by

Then, the contactors (27) and m are connected, and welding is performed by passing current from the welding transformer (to) while feeding the movable dolly (1 to 1).The welding feed of the movable dolly α is controlled by the welding cylinder (2). The welding upset position is determined by an upset stop mechanism.

After welding, the contactor is opened and a trimmer bit is inserted between the first clamper and the third clamper.
), and trimming is performed by operating the trimmer cylinder at the welded position.

When trimming is completed, use the first and third clampers (10
1 becomes open and the strip can be passed through.

In the above embodiment, the strip is cut by a guillotine shear, but the same effect can be obtained by cutting by a laser beam. In addition, in the case of flash welding, it is necessary to set the extension allowance, but this can be easily done by arbitrarily controlling the line direction position of the moving cart and the movement amount of the entry index clamper and exit index clamper. can.

In the above embodiment, the same effect can be expected even when the direction of threading of the line is reversed.

In the above embodiments, the welding transformer is housed above the strip, but it may also be placed below or on the exit side of the strip.

If the excess welding with the laser beam is performed at the position where the laser beam welded, the effect of reducing the takt time can be obtained.

As described above, according to the present invention, the strip cutting 1'rr
``'p Frame and jarring equipment to support the load during clamping, clamping, and flash welding!7, Q, j'
51 crumple.Since the third clamp was configured to share the frame, the length in the line direction was very short and compact, resulting in a Y/1277.

[Brief explanation of the drawing]

￥31 Figure shows the whole of the conventional strip connection device. Plan of Figure 2, No. 4V
J is the diagram of the TV-TV line in Figure 2, Figure 5 is the trimming device), the front view of 't, and the 6th part is 'i'A5, '5.
Front view of No. 7N is laser beam welding equipment +: 4. FIG. 8 is a side view of L, and FIG. 8 is a front view showing the main parts of FIG. In the figure, (la) (lb) is the strip, Y81 is the base, 101 is the first clamper, 12) is the whistle 2 clamper, ) old is the moving trolley, +201 is the third clamper, 124
) is the incoming side (first turret), (2) is the outgoing side -7 (second fji', pole), and the shrimp is a laser beam oscillation device. Note that the same reference numerals in each figure indicate the same or equivalent parts. Agent Masao Oiwa Figure 4 2b6 Figure 5 n

Claims (1)

[Claims] (1) a base; a first clamper disposed on the base that fixes one strip; a first clamper disposed opposite one end of the first clamper to fix the other strip; a second clamper disposed on the base that is driven in the direction of the clamper; a second clamper disposed on the base that is disposed between the image clampers and cuts an end of the one strip and an end of the other strip; a shear, a laser beam welding device disposed on the base for welding the cut portions of both strips along a cutting line of the one strip by the shear, and a laser beam welding device disposed on the base, disposed on the other end of the first clamper. a first electrode for flash welding that heats the end of the other strip; a movable trolley, a third clamper disposed on the movable trolley to face the other end of the first clamper and fix the end of the one strip; a third clamper facing the first electrode; A strip connecting device comprising a second electrode for flash butt welding arranged in a clamper of the invention and heating an end of said one strip.