JPH1024365A - Automatic Longi assembling and welding equipment - Google Patents

Abstract

(57) [Problem] To assemble and weld a panel and a plurality of longes, the lower surface of the longe and the panel are aligned at a predetermined pitch with an accuracy of ± 1 mm on a longe mounting marking line, and temporarily attached. After welding, complete the main welding 1
A device that can be performed automatically and continuously with one device on the stage. SOLUTION: Each carriage 3 is equipped with one apparatus for simultaneously assembling, provisional welding, and main welding of a plurality of longes on a panel, and a body beam 4 composed of a plurality of carriages is mounted on the carriage. The automatic marking system can be run while automatically following the reference marking line of, and the surface of the longe and the panel, temporary welding, and final welding can be continuously performed over the entire length of the longe with an accuracy of ± 1 mm or less with respect to the longe mounting marking line. Longitudinal welding equipment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a shipyard and the like.
A device that automatically assembles hull panels (approximately 20m x 20m) and multiple longes (longitudinal aggregates for reinforcement, T-type steel, I-type steel, unequal side angle steel, etc.), simultaneously performs tack welding and main welding. About. The present invention can also be applied to the manufacture of structures other than the above, such as a main girder of a bridge, due to the commonality of technology.

[0002]

2. Description of the Related Art Conventionally, in a shipyard, assembling and welding of a hull panel and a plurality of longes are first performed in a primary process by assembling and provisional welding by a longage assembling apparatus, and in a secondary process, multiple stages are often assembled. The main welding is continuously performed by the continuous welding device.

In the longi assembling apparatus, the panel and the longi are fitted to each other by a method in which the upper surface of the long which is provided on the panel on the roller conveyor or the platen is crimped. In such a case, a correcting force does not act, a gap is formed between the lower surface of the longge and the molten metal flows out into the gap during the tack welding, and a welding defect occurs.

[0004] In assembling a longe into a panel, a method of marking a mounting line of the longe in advance on the panel in parallel with the end of the panel and running a longe assembling apparatus so as to conform to the line is performed by using an end of the panel. A method of detecting by a touch method with a roller or a method of detecting an end portion of a panel by a photoelectric sensor has been adopted.

[0005]

The assembly, provisional welding and main welding of a panel and a long pipe are performed by one apparatus in one stage, so that the production cost is reduced by improving the work efficiency, the equipment space is reduced by half, and the capital investment amount is increased. The purpose is to provide a device that can greatly reduce the size of the device.

[0006] A function is provided for preventing defects in tack welding due to the generation of gaps at the time of skinning by the conventional method of panel and longe in a longe assembling apparatus.

The method of detecting the edge of the panel for aligning the longitudinal with the line for attaching the panel to the longitudinal line is based on the width 1 marked parallel to the longitudinal line of the panel, without reference to the panel end surface where the linearity of the cut surface varies widely. ~ 2m
A sensing system that detects the m reference line, combines it with the controller of the device, and travels following the reference markin line while correcting.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, an automatic long assembling / welding apparatus according to the present invention comprises a plurality of apparatuses for simultaneously assembling a plurality of longes on a panel, performing temporary welding, and performing actual welding. On the other hand, the main body of the assembling / welding apparatus comprising a plurality of carriages mounted on a single carriage travels in the longitudinal direction of the longitudinal while following the reference marking line for attaching the longes, and the surface of the longitudinals and the panel are welded and temporarily welded. Is carried out at a predetermined pitch, and both sides of the longitudinal are continuously attached to the longitudinal line attaching markin line of the panel with a single or tandem welding torch equipped with a fixed interval (adjustable) behind it with a precision of ± 1 mm. The main welding is performed automatically.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described based on embodiments with reference to the drawings. In FIG. 1, a panel of a work object is represented by (1), and a longge is represented by (2). A plurality of carriages (3) are mounted on the main beam (4) of the automatic long assembling and welding apparatus.
Can be adjusted and set by the carriage moving device (15) in accordance with the mounting pitch of the longitudinal (2).

The upper and lower reference guide rollers (5) attached to the carriage (3) are touched to the longitudinal (2) on the longitudinal mounting line of the panel by a manual adjustment screw (6) to be opposed thereto. The upper and lower guide rollers (7) are operated by the pressure hydraulic cylinder (8) to hold the longe (2) under pressure, and the traveling trolley (21) advances to the temporary attachment position of the longe and stops at the temporary attachment position. Then, the following panel and the skin of the longe are matched.

[0011] To fit the panel and the longe, the electromagnetic magnet (9) attached to the carriage (3) is lowered onto the panel by the magnet lifting cylinder (10), and after energizing, the panel (1) is adsorbed. At the same time, the upper part of the longitudinal (2) is pressed against the panel (2) by the pressure hydraulic cylinder (12) so that no gap is formed between the panel and the lower surface of the longitudinal.

In the tack welding, the tacking torch (13) shown in FIG.
7) With the air cylinder (18) attached to
It is set by the copying roller (19) to the welding position of the panel and the long, starts the temporary welding, and moves the predetermined welding length on the slide arm (15) with the moving motor and the screw (2).
0) to perform temporary welding.

At the time when the temporary attachment of the longage and the panel is completed by the temporary attachment torch, the temporary attachment torch (13) is released from the temporary attachment position by the air cylinder (18), and the carriage (3) is set in the following manner. Traveling cart (21) to the assigned temporary attachment position
, And after the stop, the operations of skin matching and temporary welding are repeated and executed over the entire length of the longe.

The tacking torch (13) moves the slide arm (1) while the carriage (3) advances to the next tacking position.
5) The upper part is returned to the origin position by the movement motor and the screw (20).

During the temporary welding of the long and the panel, since the traveling carriage (21) and the carriage (3) are stopped during the temporary welding, the final welding torch (14) attached to the rear of the temporary welding torch (13). ) Self-progresses on the welding torch slide arm (16) in the same manner as the operation of the temporary welding torch. When the carriage and the traveling vehicle advance to the next temporary attaching position, they advance in conjunction with each other, and the full welding of the longe and the panel is continuously and automatically performed over the entire length of the longe.

The reference marking line for the attachment of the longe is sensed by three sets of photoelectric sensors or small cameras at a side end of the panel (1), the reference marking line having a width of 1 to 2 mm drawn in parallel with the longe attachment line. I am trying to do it.

In FIGS. 7 and 8, three sets of photoelectric sensors (25-a) (25-b) (25-c) are mounted on a sensor mounting box (22), and are provided with reference marking lines on a panel. The bracket (23) is attached to the side of the carriage (3) installed on the side, so that if the carriage travels on the traveling carriage, the sensor mounting box also moves in conjunction with the carriage. (24).

The setting of the photoelectric sensor is performed by the sensor (25
-A) The laser spots of (25-b) and (25-c) are previously adjusted near the reference marking line by the motor (26) and the moving screw (27). The fine adjustment for the width of the marking line of 1 to 2 mm is performed by placing each of the laser spots (a), (b), and (c) in the sensor mounting box (22).
It can be set with the manual adjustment screw (28).

Photoelectric sensor (25-a) (25-b)
As shown in FIG. 11, the laser spot (a) is set on the reference marking line, and the laser spots (b) and (c) are set for the three reference marking lines (25-c).
Is set to a position sandwiching the outside of the line.

The method of sensing is as follows. While the photoelectric sensors (25-a), (25-b) and (25-c) are running in conjunction with the carriage (3), the laser spot (a) is moved from the reference marking line. When it comes off and turns off, either spot (b) or (c) turns on. Based on the output signal, the direction (right or left) deviated from the reference marking line is determined, and the control system of the apparatus controls the spot (a) to return to the reference marking line. In this way, the automatic long assembling and welding apparatus can always run on a straight line having a width of 1 to 2 mm of the reference marking line.

Although the embodiment using a laser spot by a photoelectric sensor as a sensor for sensing has been described above, the same sensing method can be adopted if the sensor is replaced with image processing using a small camera.

[0022]

Since the present invention is configured as described above, it has the following effects.

[0023] A long assembly apparatus for assembling and temporarily attaching a panel and a plurality of long pipes and a multi-unit welding apparatus for automatically and continuously performing main welding are made into a single body type so that they can be simultaneously and continuously performed in one stage. In addition, the cost can be reduced by greatly shortening the working time, the equipment space can be reduced by half, and the capital investment can be greatly reduced.

As a method of fitting the panel and the longe, a combination of suction and pulling of the panel by an electromagnetic magnet and pressing of the upper part of the longe by a hydraulic cylinder is used to prevent a gap from being formed between the lower surface of the longe and the panel. At the time of welding, it is possible to prevent welding defects caused by the flow of molten metal from the gap.

In assembling and welding a long steel plate welded structure,
When performing a continuous straight line operation, by sensing and following a reference marking line having a width of 1 to 2 mm, the linearity can be controlled within ± 1 mm, the accuracy of the product can be secured, and the quality can be improved.

[Brief description of the drawings]

FIG. 1 is a front view of an automatic longitudinal welding apparatus according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a sectional view taken along line BB of FIG. 2;

FIG. 4 is a cross-sectional view of a fitting portion between a long of a carriage and a panel.

FIG. 5 is a front view of the embodiment of the lifting device of the welding torch.

FIG. 6 is a view taken in the direction of arrows CC in FIG. 5;

FIG. 7 is a front view of the embodiment of the sensing device.

FIG. 8 is a view as seen in the direction of arrows DD in FIG. 7;

FIG. 9 is a detailed view showing an embodiment of a photoelectric sensor mounting portion.

FIG. 10 is a view taken in the direction of arrows EE in FIG. 9;

FIG. 11 is a diagram showing a laser spot positional relationship with respect to a reference marking line.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Panel 2 Longe 3 Carriage 4 Body beam 5 Reference side guide roller 6 Manual adjustment screw 7 Guide roller 8 Crimping hydraulic cylinder 9 Electromagnetic magnet 10 Electromagnetic magnet lifting cylinder 12 Crimping hydraulic cylinder 13 Temporary welding torch 14 Welding for this Torch 15 Slide arm (for temporary attachment) 16 Slide arm (for book attachment) 17 Hanging arm 18 Air cylinder 19 Copying roller 20 Moving motor 22 Sensor mounting box 23 Bracket 24 Roller 25-a Photoelectric sensor 25-b Photoelectric sensor 25-c photoelectric sensor 26 moving motor 27 screw

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁶ Identification code Agency reference number FI Technical display location B23K 9/127 508 9348-4E B23K 9/127 508B 9/235 9/235 B 37/04 37 / 04 L X B63B 9/06 B63B 9/06 S

Claims (3)

[Claims] In a process of assembling and welding a relatively long (about 20 m) steel plate welding structure such as a hull, a panel (1) and a plurality of longes (2) are assembled and tack welded. A single or tandem self-adhesive welding torch (14) that automatically and continuously performs actual welding while maintaining a constant distance from the temporary welding position over the entire length of the longe assembling apparatus and the longe. , An automatic long assembling and welding machine characterized by greatly improving work efficiency and reducing equipment space by half. 2. In a welding work of assembling a relatively long steel plate welding structure such as a hull, a plurality of longes (2) are assembled to a panel (1) and a temporary welding is performed. As a method of matching the panels (1) and longes (2)
The panel (1) is pulled up by the electromagnetic magnet (9) mounted on the plurality of carriages (3), and at the same time, the upper part of the longe (2) is crimped by the hydraulic cylinder (12) to form the longe (2). An automatic longage assembling and welding apparatus in which a gap between the lower surface of the panel and the panel (1) is not generated, so that molten metal does not flow into the gap during tack welding of the longe and the panel, thereby preventing welding defects. 3. In the welding and assembling of a relatively long steel plate welded structure such as the hull, a plurality of longes (2) attached to a surface of the panel (1) by a marking machine are parallel to a mounting line. Width 1 drawn on the side edge of panel (1)
２2 mm reference marking line is sensed by three sets of photoelectric sensors or small cameras (25-a) (25-b) (25-c) mounted on the sides of the carriage (3), An automatic long assembling and welding system with a marking line sensing system for controlling the vehicle so that it can run within a linearity of ± 1.0 mm while following the reference marking line.