JPH1158076A - Backing device for connecting plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To reduce man-hours for backing work at the time of connecting plates. SOLUTION: A magnet 23 is attached to a moving carriage 1 and the moving carriage 1 is attracted to the rear surface side of the connecting groove part 18 of a steel plate 17. The magnet 23 is brought into non-contact with the surface of the steel plate 17. Pressing rolls 12 arranged in the moving direction of the carriage are supported by a roll frame 11, and the roll frame 11 is elastically supported with a spring 16 by the moving carriage 1. A FAB backing material 19 arranged in the rear surface of the connecting groove part 18 is fixed by pressure to the steel plate 17 with a spring force acting on pressing rolls 12.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a splicing backing apparatus used for splicing steel plates in the construction of a hull block, a tank or the like.

[0002]

2. Description of the Related Art For example, as one of means for preventing an oxide film from being generated at the time of welding at the time of joining a hull block, an FAB (flux asbestos) backing material is provided on the back side of a joint groove. May be placed.

[0003] In the case of using the above-mentioned FAB backing material, conventionally, a band-shaped FAB backing material is adhered to the back surface of the joint groove along the joint groove, and then an aluminum plate is formed. The FAB backing material is pressed against the back surface of the joint groove by attaching a magnet thereon at a pitch of 300 to 500 mm.

[0004]

However, in the case of the above-mentioned conventional method, a large number of aluminum plates and magnets are used to press the FAB backing material on the back surface side of the joint groove, so that the mounting is performed. In fact, the time required for removal takes up the majority of the backing work time, especially when the backing work is carried out in a narrow part such as the bottom side of the hull block. There is a problem that a large amount of labor is required for loading and unloading a large number of aluminum plates and magnets. In the case of the tank, when the backing work is performed inside the tank, a similar problem is caused.

[0005] In view of the above, the present invention has been developed to solve the problem that the FAB backing material can be pressure-bonded to the back side of the joint groove without bringing a large number of magnets or the like to the backing work. It is intended to provide this device.

[0006]

According to the present invention, in order to solve the above-mentioned problems, a magnet for attracting the movable trolley to a steel plate surface is provided on the movable trolley so as to be in non-contact with the steel plate surface. And a roll frame for arranging and supporting a plurality of presser rolls in the moving direction of the bogie to the moving bogie, and a FAB arranged on the back side of the joint groove for steel plate.
The roll frame is elastically supported by a spring so that each pressing roll presses against the surface of the backing material.

[0007] On the back surface of the steel plate joint groove, the FA
B. With the backing material adhered, place the moving truck on the back side of the joint groove, and move the moving truck in accordance with the progress of welding. The located FAB backing material can be pressure-bonded to the back surface of the joint groove with a presser roll.

A temperature sensor for detecting welding heat input is provided between the presser rolls so as to face the surface of the FAB backing material, and the movement of the movable carriage is controlled based on the temperature detected by the temperature sensor. With this configuration, it is possible to make the movable trolley self-run according to the progress of the welding.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 5 show an embodiment of the present invention, in which a joint groove 18 is formed on the upper surface side of a steel plate 17 as in the backing work on the bottom side of a hull block. hand,
An example of application to the case where the FAB backing material 19 is crimped to the back surface side of the joint groove 18 will be described.

A pair of left and right wheels 3 are rotatably supported via wheel shafts 4 at positions near the front and rear portions of a bogie frame 2 having a rectangular frame structure. A chain sprocket 5 is attached to one end, an endless chain 6 is wrapped between the two chain sprockets 5, and one side of the bogie frame 2,
A motor 7 is installed via a speed reducer 8, and an output shaft 9 of the speed reducer 8 is positioned so as to penetrate inside the bogie frame 2, and a chain sprocket 10 is attached. To form a self-propelled movable carriage 1 that transmits the driving force of the motor 7 from the chain sprocket 10 to the wheels 3 via the chain 6, the chain sprocket 5, and the wheel shaft 4.

In the bogie frame 2 of the movable bogie 1,
A plurality of roll frames 11 (six in the figure) arranged at equal intervals along the carriage moving direction are arranged on the roll frame 11 with the roll frame 11 having the upper surface opened. ) Is rotatably supported so that the roll surface is exposed upward, and bolts 13 project downward from front and rear positions of the lower surface of the roll frame 11. The lower end is movably penetrated through a support plate 14 fixed to the lower surface of the bogie frame 2, and a nut 15 is attached. Further, the bolt 13 is interposed between the roll frame 11 and the support plate 14. Attach the spring 16 as
By pushing up the roll frame 11 with the spring force of the spring 16, the FAB backing material 19 is held down by the pressing roll 12.
This allows the steel plate 17 to be pressed against the back surface of the joint groove 18.

Further, in order to move the movable carriage 1 by itself following the joint groove 18, a support arm 20 is provided at the front and rear ends of the lower surface of the carriage frame 2 so as to project in the left-right direction. At the left and right ends of each support arm 20, a magnet holder 21 having an open upper surface is attached upwardly via a height-adjustable rod 22, and a magnet 23 having a strong magnetic force is held by the magnet holder 21. At the four corners of the magnet holder 21, guide rollers 24 that roll on the surface of the steel plate 17 are attached so that the suction force of the magnet 23 acts on the steel plate 17 in a non-contact manner. As a result, the movable trolley 1 moves the steel plate 1
7 so that it can move while being adsorbed on the surface,
Further, a temperature sensor 26 is attached to the roll frame 11 so that the terminal protrudes upward from between the presser rolls 12 at the center so that heat input by the welding torch 25 can be detected. When the temperature exceeds the set temperature, a limit switch (not shown) is operated to move the mobile trolley 1, and when the sensed temperature falls below the set temperature, the mobile trolley 1 is controlled to stop. To

Reference numeral 27 denotes side rollers mounted on the front and rear ends of the bogie frame 2 corresponding to the width of the FAB backing material 19 in order to prevent the movable bogie 1 from meandering.

When performing a backing work to press the FAB backing material 19 against the back surface of the joint groove 18 formed on the upper surface side of the steel plate 17, the joint groove is previously set. The FAB backing material 19 is adhered to the back surface of the steel plate 18 with an adhesive, and the movable cart 1 is attracted to the back surface of the steel plate 17 by the magnet 23 in a state where the left and right wheels 3 straddle the FAB backing material 19. The mobile trolley 1 is moved by following the welding of the joint groove 18 by the welding torch 25.

More specifically, if the joint groove 18 is welded in the state where the movable carriage 1 is set as described above, the welding heat input is detected by the temperature sensor 26 projecting from between the presser rolls 12. You. The temperature sensor 26 is
In advance, the temperature is set by changing the distance from the welding point, and when the sensed temperature exceeds the set temperature, the movable trolley 1 is advanced by operating the limit switch, and the sensed temperature is lower than the set temperature. When it is lowered, control is performed to stop the mobile trolley 1. Therefore, the mobile trolley 1
Can be moved so as to follow the progress of welding. At this time, the crimping force of the FAB backing material 19 has a delicate effect on welding, but since the roll frame 11 in the bogie frame 2 is pushed upward by the elastic force of the spring 16, the roll frame 11 The FAB near the welding point is formed by each holding roll 12 supported.
The backing material 19 can be evenly pressed on the back surface of the steel plate 17.

As described above, in the present invention, the mobile trolley 1 is made to follow by detecting the welding heat input, and the FAB backing material 19 located in the vicinity of the welding location is partially pressed by the movement of the mobile trolley 1. As a result, the number of man-hours can be significantly reduced as compared with the conventional method that requires a large number of aluminum plates and magnets. Incidentally, if the left and right wheels 3 are freely driven by incorporating, for example, a differential gear or the like into the bogie frame 2 of the mobile bogie 1, even if the joint groove 18 is largely curved, the mobile bogie 1 can be moved. Can be followed.

In the above embodiment, the case where the temperature sensor 26 is provided in order to make the mobile trolley 1 unmonitored has been described. However, the mobile trolley 1 may be remotely operated without the temperature sensor 26. Also, in the embodiment, the example of application to the steel plate 17 in which the joint groove 18 is formed on the upper surface side, such as the backing work on the bottom surface side of the hull block, has been described. It can be similarly applied to a steel plate in which the joint groove 18 is formed sideways, such as a backing work on the side surface of a hull block, and various other changes can be made without departing from the gist of the present invention. Of course, it can be added.

[0019]

As described above, according to the backing device for splicing of the present invention, the following excellent effects are exhibited. (1) The movable trolley is equipped with a magnet for attracting the movable trolley to the steel plate surface so as to be in non-contact with the steel plate surface, and a plurality of pressing rolls are arranged on the movable trolley in the moving direction of the trolley. A roll frame to be supported is assembled, and the roll frame is elastically supported by a spring so that each pressing roll presses against the surface of the FAB backing material disposed on the back side of the joint groove of the steel plate. Therefore, by moving the movable trolley to the steel plate surface and moving it in accordance with the progress of welding, the FA located at the welding location
B The backing material can be pressed against the back surface of the groove for joints with a presser roll, and there is no need to bring in a large number of aluminum plates and magnets as in the conventional backing work. This work can be performed quickly and smoothly, and the number of steps can be significantly reduced. (2) A temperature sensor that detects welding heat input is provided between the presser rolls so as to face the surface of the FAB backing material, and the movement of the movable cart is controlled based on the temperature detected by the temperature sensor. With this configuration, it is possible to eliminate the need for monitoring the backing work.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of a backing device for sheet joining according to the present invention.

FIG. 2 is a view in the direction of arrows AA in FIG. 1;

FIG. 3 is a view taken in the direction of arrows BB in FIG. 1;

FIG. 4 is a view taken in the direction of arrows CC in FIG. 1;

FIG. 5 is a view in the direction of arrows DD in FIG. 1;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Moving trolley 11 Roll frame 12 Holding roll 16 Spring 17 Steel plate 18 Joint groove 19 FAB backing material 23 Magnet 26 Temperature sensor

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Hirokazu Nakamura 2-1 Showa-cho, Kure City, Hiroshima Prefecture Inside Kure Daiichi Plant, Ishikawajima Harima Heavy Industries Co., Ltd. (72) Inventor Yoshihiko Murakami 2 Showa-cho, Kure City, Hiroshima Prefecture No. 1 Ishikawajima-Harima Heavy Industries Kure Daiichi Plant

Claims (2)

[Claims] 1. A movable carriage is provided with a magnet for attracting the movable carriage to a steel plate surface so as to be in non-contact with the steel plate surface, and a plurality of pressing rolls are provided on the movable carriage in a carriage moving direction. FAB which is mounted on the back side of the joint groove for steel plate
A backing device for board splicing, characterized in that the roll frame is elastically supported by a spring so that each pressing roll presses against the surface of the backing material. 2. A temperature sensor for detecting welding heat input from between the presser rolls and facing the surface of the FAB backing material, and controlling the movement of the movable trolley based on the temperature detected by the temperature sensor. 2. The backing device for board splicing according to claim 1, wherein: