JPS60231584A - Strip connecting device - Google Patents

Abstract

PURPOSE:To shorten the length in the direction of line and to make the device compact by enabling said device to perform welding without moving cut one side strip. CONSTITUTION:A frame 10 is driven by a cylinder 42 and shearing devices 11, 12 are shifted to the center of the line. Rear end and front end of a preceding strip 1a and succeeding strip 1b are stopped in the blade width of shearing devices 11, 12 respectively, and centering is made by a side guide device. Then, the first and second clamperes are closed and two strips 1a, 1b are clamped. Strips are cut by shearing devices 11, 12. After cutting, devices 11, 12 become open state, and the frame 10 returns to the original position. A shifting truck in moved to butt end faces of the preceding strip 1a and succeeding strip 1b. A laser beam working head 39 travels with the frame from the back in the direction that crosses the line and weld is made.

Description

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

[Conventional technology]

Conventionally, there was a device for this plow as shown in Fig. 1.

This figure is a schematic diagram of a steel process line.
a) In order to pass (lb) continuously through the processing equipment (6) for pickling, etc., it is necessary to connect the front and rear ends of the coil at the input side of the line. Laser beam welding or flash welding has been used as a means for this, depending on the type of steel.

In the conventional device, the jarring device (3), the laser beam welding device (4), and the flash welding device (5) were installed independently, and no organic bond ellipse was formed.

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

In Fig. 1, when flash welding, strips (la) (lb) are fed out from payoff reel (2).
) are cut by a jarring device (3), and then the strip is 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 a laser beam welding device (4), the leading end and the trailing end were cut using a jarring device built into the welding device, and welded at that position.

Both welded strips (la) (lb) pass through a processing device (6) and are wound up in a recoiler (7).

Conventional strip connection devices have a drawback that the jarring device, laser beam welding device, and flash welding device are installed independently, and therefore the space occupied in the line direction is extremely large.

In the iron and copper market, the need for special steels (alloy steel, high-strength steel, silicon steel sheets, etc.) is increasing, and the steel process line is designed to process these special steels and ordinary steel (low carbon steel) on the same line. There is a need to increase the level of operation.

On the other hand, considering the quality of the weld joint and the downtime for welding, the best combination is flash welding for ordinary steel and laser beam welding for special steel. and,
This combination demonstrates high productivity as a process line.

[Summary of the invention]

This invention relates to a device that is designed to be combined in this way, and was made to eliminate the drawbacks of conventional devices and provide a rational equipment configuration. To provide a strip connecting device that can be downsized by configuring a trimming device to move within a line.

[Embodiments of the invention]

Hereinafter, in FIGS. 2 and 3 for explaining one embodiment of the present invention with reference to the drawings, a frame (9) of a stationary unit is placed on a base (8), a moving unit and a moving cart 0 are shown. Enoki are placed facing each other and both strips (Ia)
Shear frames H are constructed in a direction crossing the moving direction of (lb). First, a side guide device (85a) for centering the lotus lip (1b) on the frame (9) mounted on the base (8);
There is a second clamper QQ to clamp and hold the strip and a cylinder aη to actuate.

In addition, the second clamper αQ includes a welding transformer α for flash welding (for the tulip contactor),
The conductor and inlet electrode (1) are respectively attached. The moving carriage (to) has a side guide device C85a) for centering the strip (1a), a first clamper a< for clamping and holding the strip, and a cylinder a5.

In addition, in the clamper part, there are a tulip contactor (male) (2), a flexible conductor (2), a conductor and an output electrode) for flowing flash welding current.

When performing flash welding, the cylinder) moves forward and the tulip contactor is connected to form a current-carrying circuit. This mobile cart (2) is supported by wheels and runs left and right on the rail wheels. This rail can be moved up and down by an electrode height adjustment mechanism, making it possible to change the electrode level relative to the fixed side. Travel control of the movable cart (to) is performed by a welding cylinder (2), and its movement amount is regulated by an upset stop mechanism (2). And positioning is done by hitting a stopper (b). This feed control device is attached to a base (8). A jarring device αυ(2) is provided on the shear frame o4 arranged at the rear between the first clamper α4 and the second clamper QQ, and the jarring device αυ(2) is operated by a cylinder. In addition, the C-shaped frame Q () for the shear is equipped with trimmer bits (86a) (86b) for removing excess welding parts, a laser beam oscillation device (b) for laser welding, and a laser beam transmission device (
) and the laser beam processing head ■ are housed.

The frame αO is supported by wheels and runs on a rail @υ with cylinders (4 wheels).

Next, the operation will be explained.

(1) When performing laser beam welding, first, the frame frame is driven by the cylinder (6), and the jarring device (b) is moved to the center of the line as shown in FIG. Then, 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 αυ(2), and centering is performed by the side guide devices (85a) (85b). Thereafter, the first clamper O=0 and the second clamper QQ are closed to clamp and hold both the strips (la) and (lb). Then, the jarring device Qυ斡 is operated with cylinder α4 to cut the strip.

When the cutting is completed, the jarring devices 01) and 2 are opened, the frames 1 and 11 return to their original positions, and the movable cart (to) moves to the second clamper 00 side to release the leading strip (1a). The end faces of the trailing strip (1b) and the trailing strip (1b) are butted together with the precision required for welding.

Along this cutting line, a laser beam processing head α) travels together with the frame αQ from the rear face in a direction crossing the line and performs welding. When the welding is completed, the laser beam processing head (2) returns to its original position, and the first and second clampers 0100 are opened to begin threading the strip.

In addition, when removing the excess welding part, use the frame (10
It is also possible to cut with trimmers (86a) (86b) built into the frame (10) by operating the trimmer (86a) (86b) built into the frame (10).

(2) In the case of flash welding, the cutting process of the leading strip (1a) and trailing strip (1b) is the same as laser beam welding. After cutting the strips, the frame a1 returns to its original position, and the movable trolley (G) moves forward, bringing the strips into abutting state necessary for flash welding.

Then, by connecting the tulip contactors (E) and (C), welding is performed while flowing the welding material from the welding transformer QO and sending the movable cart (To). After welding, open the tulip contactor (2) and connect the first and second
Clamp C141QQ Trimmer bit (36a)
(86b) is entered. In other words, frame a at the welded position
Q to cylinder) to perform trimming.

After trimming is completed, use the first and @2 clampers α4.
(The IQ is opened and the strip threading begins.

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. Further, in the embodiment, it is assumed that the strip flows from the right side in FIG. 2, but the same effect can be expected even if the strip is reversed.

In the present invention, the flash welding transformer is housed above the strip, but it may also be housed below the strip. Also, a welding transformer may be installed on the exit side.

In the example, a trimmer bit (86a) (36b) of a trimming device and a laser beam welding device are attached to the frame a0.
However, as shown in Figure 6, the jarring function, the welding excess welding part removal function, and the laser beam welding function can be separated and installed in opposite positions. It is effective.

〔Effect of the invention〕

As described above, according to the present invention, the length in the line direction is extremely short and compact because the laser beam welding or flash welding can be performed without moving the cut strip on one side. It was done.

[Brief explanation of drawings]

Figure 1 is a configuration diagram showing a conventional strip connection device;
8 is a plan view of FIG. 2, FIG. 4 is a side view of main parts of FIG. 2, and FIG. 5 is another embodiment of the present invention. FIG. In the figure, (la) and (lb) are strips, Oυ (2) is a jarring device, (141 is a first clamper, Ql19 is a second clamper, (86a) and (86b) are trimmer bits (trimming devices), ( b) is a laser beam oscillation device, (2) is a laser beam transmission device, and ■ is a laser beam processing head. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Masuo Oiwa Figure 3 Figure 4 Figure 5 Jl, JAa /J

Claims (3)

[Claims] (1) A first clamper that fixes the rear end of the leading strip, a second clamper that is placed opposite to the first clamper and that fixes the leading end of the trailing strip, and a clamp that moves between the two clampers. A jarring device that cuts the rear end of the leading strip and the leading end of the trailing strip; and a jarring device that moves between the two clampers and cuts the rear end of the leading strip and the trailing strip along a shear cutting line at the leading end of the trailing strip; A strip welding device comprising: a welding device for welding the tip of the clamper; and a trimming device for moving between the two clampers to remove excess buildup from the welded portion. (2) The shear cutting line of either one of the preceding and following strips is moved to the shear cutting line of the other strip, and the two strips are welded together. Strip connection device as described. (3) The strip connecting device according to claim 2, wherein the jarring device is a laser beam.