JPS61140369A - Device for running welding of strip - Google Patents

Abstract

PURPOSE:To perform inexpensively the running welding of a strip with disusing large-scaled device by providing he means to weld with running, positioning and abutting with clamping by a truck respectively the rear end of preceding plate and the rear end of succeeding plate. CONSTITUTION:A preceding truck 1 grips a preceding plate W1 by a clamp 14 with running at the same speed with the preceding plate W1. The succeeding truck 2 grips the succeeding plate W2 by the clamp 14 and chases the preceding truck with increasing its speed synchronously with the succeeding plate W2. Both trucks 1, 2 are connected by a connection mechanism 21 and run synchronously at the work line speed in a body. In this case the rear end of the preceding plate W1 and the tip part of the succeeding plate W2 are abutted with positioning and the butt place is welded by the welder 22 provided at least one part of the trucks 1, 2. The clamp 14 of both trucks 1, 2 is released and the joined preceding plate W1 and succeeding W2 are run together on both trucks 1, 2 and fed to the work line.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application 1] The present invention provides a method for applying a method to the rear end of a leading plate of a strip to be sent to a processing line while the trailing end of the leading plate is running in a strip supply line. This invention relates to a novel strip running welding device for welding and joining the leading end of a trailing plate of a strip.

[Prior Art] Conventionally, welding equipment that adds leading and trailing strips one after another in order to continuously supply strips of a predetermined length to a processing line has been designed to It was fixedly provided in a fixed position, and the rear end of the leading plate and the tip of the trailing plate were butted against each other and welded.

Therefore, it is necessary to provide equipment (referred to as an "accumulator") as shown in FIG. 4 between the welding device and the processing line in the strip supply line.

This equipment has a wide internal space, and the strips W are temporarily stored in the space from the left side in the figure, and then the strips W are stored from the right side in the figure.
The machine is fed at a constant speed and fed to the processing line. The welding device is located on the left side of the equipment, and while the strip W stored in the space of the equipment is being fed out, its rear end is stopped and the trailing plate of the strip W is fed there. The tip was welded.

[Problems to be solved by the invention] As mentioned above, the conventional welding equipment temporarily stops the strip to weld, so in order to continue supplying the processing line even when the welding device is stopped, it is necessary to stop the strip. Special storage facilities are required. As shown in Fig. 4, the equipment is large-scale with a large interior space, so the price of the equipment itself and the construction costs for installation are high. In addition, the strips may come into contact with each other, causing scratches on the surface, and the bending radius becomes large, making it unsuitable for thick strips requiring larger equipment. Accumulators that store strips include those that store strips in a spiral shape, or those that store strips by folding them horizontally into a space such as the ceiling of a building where the strips are processed. There are various types, such as , but all of them have similar problems.

The present invention aims to eliminate the need for such strip storage equipment and solve the above-mentioned problems associated with the equipment at once.

[Means for Solving the Problems] In order to solve the above-mentioned conventional problems, the present invention aims to solve the above-mentioned problems of the prior art by providing a system that allows the trailing end of the leading plate of the band to run through the supply line of the band, without stopping the band. , to provide a new strip running welding device that can weld and add the tip of a trailing strip to the rear end of the leading strip, and this running welding device has the following features:
It is equipped with a leading cart that runs at the processing line speed by gripping the rear end of the leading plate of the strip, and a trailing cart that runs after the leading cart by gripping the tip of the trailing plate of the strip. The bogie catches up with the leading bogie and joins together, the rear end of the leading plate and the tip of the trailing plate are butted together, and then the butt ends of the strip plates are welded on both running bogies. It is constructed.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

In the figures, 1 is a leading truck, 2 is a trailing truck, and these are the supply line L of the strip W extending in the left and right direction in each figure.
It is provided inside. The supply line L runs the strip W fed from the left side in the figure over a plurality of rollers 3.
It is continuously supplied to the processing line on the right side of the figure at a constant processing line speed.

The processing line is, for example, an electric resistance welded tube manufacturing line that uses the band plate W as a material. Each roller 3 is of a swing type, and forms a pair on both sides of the supply line L, that is, at the top and bottom in FIG. When a table is formed by being located within the supply line L and swung to the other side, the table is not formed by being located outside the supply line L, unlike those located at both left and right ends in the figure. Each of the leading truck 1 and the trailing truck 2 is movable with wheels 5 mounted on rails 4 laid along such a supply line.

Both trolleys 1 and 2 run back and forth inside the supply line, and at that time, swing-type rollers 3 are opened left and right so as not to interfere with the running, and after passing, the rollers 3 return to their original state. Closed to form supply line L. Such an opening/closing operation of the rollers 3 is performed in the same manner regardless of whether the carriages 1.2 are traveling in the left or right direction in the figure. Moreover, the opening and closing of the roller 3 can be done by, for example, using a protrusion (not shown) on the side of the roller 3 for both carriages 1.
This is done by using a mechanism that a projection (not shown) on the ゜2 side hits.

Both carts 1.2 have a generally symmetrical configuration in the figure. Therefore, the common components will be described below with the same reference numerals assigned.

The bodies of both molds 1 and 2 are equipped with a truck drive mechanism 6 for driving the truck bodies themselves. This truck drive 1 structure 6 has a configuration in which a motor 9 rotates a pinion 8 that meshes with a rack 7 laid along a rail 4. On each of the two trolley bodies there is a supply, Lupago O1 metering roll 11. along the line L. Side guide 12
, idle roller 13, clamp 14, stopper 15
are arranged side by side, and they are arranged in a symmetrical arrangement such that the stopper 15 is located on the opposite side of both mold bodies.

The looper 1o has a roller 16 located below the strip W on the supply line L, and the ends of the mold bodies on the opposing sides are rotatably supported around a point P. The looper 10 is adjusted to rotate vertically about a point P by a hydraulic jack 17 between the looper 10 and the main body of the truck. When the looper O is at the downward rotation limit position, the roller 16 is located on the supply line L, as shown on the trailing cart 2 on the left side in FIG. When it rotates upward, it is in a state similar to that on the leading cart 1 on the right side in FIG. 1, and the roller 16
lifts the strip W on the supply line and slackens it. The degree of slack in the band plate W changes depending on the degree of adjustment of the upward rotation of the looper 10.

Total f! The 10-rule 11 measures the amount of relative movement between the truck body and the strip W by rolling in contact with the upper surface of the strip W on the truck body. Therefore, when the truck body is in a stopped state, the speed of the strip W running on the supply line L is measured. A roll 18 is provided on the lower side of the strip W facing the measuring roll 11.
The strip W is sandwiched between the roll 18 and the roll 18.

The side guides 12 are a pair of left and right guides that guide the left and right sides of the strip W on the truck body,
are screwed together. This feed screw 19 is connected to the motor 2
The screw is cut so that the side guide 12 can be moved and adjusted symmetrically about the center of the supply line L by being rotated by 0. Therefore, the side guides 12 guide the strip W so that the center of the strip W is always aligned with the center of the supply line L.

The idle roller 13 is rotatably provided between the side guide 12 and a clamp 14, which will be described in detail below, and forms a supply line L similarly to the swing type roller 3.

The clamp 14 is provided so as to be located above the strip W on the truck body, and is configured to clamp the strip W on the truck body by descending and release the clamp by rising. It has become.

The stopper 15 is provided at the opposite ends of both mold bodies, and when it protrudes upward, it is located in the supply line L on the trolley body to stop the end of the strip W, and when the stopper 15 protrudes upward, it stops the end of the strip W, When retracted from the supply line L, the end portion of the strip W is unfastened by retreating downward from the supply line L. This stopper 1
A plurality of mold bodies 5 are provided in each truck body symmetrically with respect to the center of the supply line L, and are arranged so that they do not come into contact with each other when both mold bodies come into contact with each other. These stoppers 15 move downward when the two mold bodies come into contact with each other, and the stoppers 15 move downward when the two mold bodies come into contact with each other, and the stoppers 15 move downward when the two mold bodies come into contact with each other.
so that the ends of the two are butted against each other.

The above configuration is common to the leading truck 1 and the trailing truck 2.

In addition, a pair of connecting mechanisms 21 for connecting both molds 1 and 2 are provided at mutually opposing portions of both molds 1.2. In this example, a connecting hole 21a is provided on the trailing truck 2 side, and a connecting hook 21b is provided on the leading truck 2 side, and after the connecting hook 21b enters the connecting hole 2Ia, it is rotated by a predetermined angle. By doing so, the connecting hole 21a
When the connecting hook 21b is further rotated by a predetermined angle, the engagement is released.

In the connected state of both molds 1.2, the ends of the strips W fixed on the respective carriage bodies by the clamps 14 are butted against each other.

Furthermore, a welding machine 22 is provided on the upper part of the preceding truck 1 for welding the ends of the strips W which are butted against each other due to the connection of the two molds 1 and 2. In this example, a low-cost welding machine is used, and two welding torches 23 are used.
have. Both welding torches 23 reciprocate on the screws 24 along the width direction of the strip W according to the rotation of a built-in motor (not shown), and each performs welding in the width direction of the strip W. bear. Therefore, the time required for welding the strip W is reduced to about half compared to the case where only one welding torch 23 is used. A welding wire feeding reel 25 is provided for each of the welding torches 23 .

A power supply device for each operating mechanism, a power supply device for welding, and various restriction devices are connected to both molds 1 and 2 configured as described above. These connections are made by cable reel method, aerial catenary method, etc. Furthermore, these devices can also be mounted on the truck body.

Next, the operation will be explained according to the welding procedure shown in Fig. 3 <a) to (1). In the figure, Wl is attached to the leading plate of the strip W, and Wl is attached to the following trailing plate. attach

Normally, both molds 1 and 2 are placed on the upper side (
They are waiting at the position shown on the left side in the figure, and form part of the supply line L. A calibration roll 26 is provided at the top of the supply line L to detect the amount of movement of the strip W running in the supply line L.

Now, as shown in FIG. 3(a), when there is less remaining of the leading plate w1 running on the supply line L at the processing line speed and the trailing end passes the weighing roll 26, the detection signal of the passing is controlled. Enter the device.

This causes the leading truck 1 to move forward. The trailing truck 2 is at a complete standstill.

When the rear end of the leading plate w1 passes through the trailing truck 2 and reaches the top of the leading truck 1, as shown in FIG.
The leading cart 1 has already been accelerated to near the processing line speed. Therefore, the speed of the preceding truck 1 is controlled according to the rear end position of the preceding plate W1. The rear end position of the leading plate W1 is determined by calculating a detection signal of the traveling distance of the leading truck 1, for example, a signal output according to the rotation speed of the wheels 5, and a detection signal of the measuring roll 11. . During this time, the trailing plate W1 reaches the weighing roll 26, and a command to advance the trailing truck 2 is issued.

Thereafter, as shown in FIG. 2C, the preceding truck 1 causes the stopper 15 to protrude upward to increase the vehicle speed, and the rear end of the preceding plate W1 contacts the stopper 15.

At this time, the magnifying glass 10 is raised to give slack to the leading plate W1 so that fluctuations in the vehicle speed and the running speed of the leading plate W+ can be absorbed. At the same time, the side guides 12 operate to center the leading plate W1 on the truck body. On the other hand, the trailing plate W2 reaches above the trailing truck 2 that is running.

Thereafter, as shown in FIG. 2D, the leading truck 1 clamps the leading plate WI with the clamp 14 while traveling at a circumferential speed with the leading plate W1, and then returns the stopper 15 downward. On the other hand, the trailing truck 2 causes the stopper 15 to protrude upward, and similarly to the leading truck 1, the vehicle speed is controlled based on the relationship with the running speed of the trailing plate W2, so that the tip of the trailing plate W2 is brought into contact with the stopper 15. guess. At this time, vehicle speed and trailing board W
2, the looper 10 is raised to give slack to the trailing plate W2, and the side guide 12
Centering of the trailing plate w2 is performed by.

As shown in FIG. 2(e), when the leading cart 1 is traveling at the machining line speed in synchronization with the leading plate W1, the trailing cart 2 clamps the trailing plate W2 with the clamp 14, and then Return stopper part 15 downward. Then, the trailing truck 2 increases its speed in synchronization with the trailing plate W2 and chases the leading truck 1.

As shown in Figure (f), the trailing truck 2 is the leading truck 1.
When the two molds 1 and 2 catch up with each other, the two molds 1 and 2 are connected to each other by the connecting mechanism 21. After this, the trailing truck 2 and the leading truck 1 run in unison at the machining line speed. At this time, the rear end of the leading plate W+ and the leading ends of the trailing plate W2 are butted against each other. Then, the welding machine 22 quickly welds the butt portions. During this time, both molds 1.2 are running at the machining speed.

When the welding is completed and the trailing plate W2 is added to the leading plate W+, the clamps 14 on both molds 1.degree. As a result, the leading plate W1 of both molds 1 and 2
All restraints on and trailing plate W2 are released. Then, both molds 1 and 2 gradually decelerate and eventually stop, but the leading plate W1 and the trailing plate W2 run continuously over both molds 1 and 2 and are supplied to the processing line.

In this way, the welding between the leading plate W1 and the trailing plate W2 is
This is quickly carried out on a carriage 1.2 which runs in sync with the leading plate W1 while it runs at the processing line speed. As a result, the trailing plate W2 can be added without stopping the processing line.

After completing the welding work, the lower side of the supply line L (right side in the diagram)
After that, both molds 1.2 moved to the supply line L
Move back inside and return to the original standby position on the upper side. Then, untie each other.

By repeating the above operations, trailing plates W2 are added one after another and are continuously supplied to the processing line. When both molds 1 and 2 are running, the swing type roller 3 swings as described above to form the supply line L without hindering the running of the carriage 1.2. In addition, when cutting the ends of the leading plate W and the trailing plate W2 for welding, the ends of the leading plate W and the trailing plate W2 are cut.
This shall be done before moving up.

In the above embodiment, a swing type roller 3 forming the supply line L is used, but other types may be used. It is fine as long as it is free of .

- The position of the carriage 1.2 and the strip W can also be detected by optical and electronic means, for example a device using a television camera. Further, the type and number of welding machines 22 are arbitrary, and the welding machines 22 may be provided on the trailing truck 2 or on both the molds 1 and 2. Further, this device is extremely widely applicable to various strip use lines other than the electric resistance welded tube manufacturing line.

[Effects of the Invention] As explained above, the strip welding device according to the present invention includes a leading cart that runs at the processing line speed by gripping the rear end of the leading plate of the strip, and It is equipped with a trailing truck that runs by gripping the tip of the trailing plate of the strip, and the trailing truck catches up with the leading truck and joins, and after the trailing edge of the leading plate and the tip of the trailing plate butt together. Since the abutting ends of the strips are welded together on the moving intermediate vehicle, while the leading plate runs in the strip supply line, the rear end of the trailing plate is welded to the rear end of the leading plate. You can weld the ends and add more pieces one after another. Therefore, there is no need for a large-scale device such as an accumulator for temporarily storing strips as in the past, and space and energy savings can be achieved, making it possible to provide an inexpensive running welding device for strips. Moreover, it can be applied not only to new lines but also to existing lines.

[Brief Description of the Drawings] Figures 1 to 3 show an embodiment of the present invention, in which Figure 1 is a front view, Figure 2 is a plan view, and Figures 3 (a) to (1).
4 is an explanatory diagram of operations according to the operation order, and FIG. 4 is a diagram showing an example of a device for temporarily storing strips necessary for a conventional welding device. 1... Leading trolley, 2... Trailing trolley, 3
...Roller, 14...Clamp, 15
...Stopper, 21...Connection mechanism,
22... Welding machine, L... Supply line.

Claims (1)

[Claims] While the trailing edge of the leading strip sent to the processing line runs through the strip supply line, the tip of the trailing strip is welded to the trailing edge of the leading strip. This is a welding device that is equipped with a leading truck that can run on its own in synchronization with the rear end of the leading plate and a trailing truck that can run on its own in synchronization with the tip of the trailing plate in the strip supply line. The leading truck is equipped with a positioning mechanism that positions the rear end of the leading plate at a predetermined position, and a clamp mechanism that releasably clamps the leading plate whose rear end is positioned by the positioning mechanism. for,
A positioning mechanism that positions the tip of the trailing plate at a predetermined position and a clamp mechanism that releasably clamps the trailing plate whose tip is positioned by this positioning mechanism are provided, and a clamp mechanism that releasably clamps the trailing plate whose tip is positioned by the positioning mechanism is provided. is provided with a pair of coupling mechanisms that releasably connect the respective carriages to each other by abutting the rear end of the leading plate and the tip of the trailing plate clamped at a predetermined position on each carriage, and at least one of the leading truck and the trailing truck,
A running welding device for strip plates, characterized in that it is equipped with a welding machine for welding the abutting portion of the rear end of the leading plate and the tip of the trailing plate.