JPH0530862Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The present invention is a product that is produced in a wide variety of small quantities, such as a corner part formed by a skin plate of a box-shaped cross-sectional structure, by, for example, a submerged arc welding method. This invention relates to improvements in welding equipment for welding.

[Prior Art] For example, when submerged arc welding is performed on a corner of a workpiece such as a box-shaped cross-section structure, sufficient flux is required to be supplied to the welded part. It is necessary to build a wall to hold the flux. This wall is also required to be heat resistant because it must hold not only flux during welding but also high-temperature welding slag.

Conventionally, this wall was made by attaching shaped steel along the entire length of the welded part, or by installing a single copper plate cooled by natural air, so that the corners could be pressed against each other by the weight of the copper plate and moved relative to each other. That's what I was doing.
(Japanese Unexamined Patent Application Publication No. 48-44146 is a prior art.) [Problem to be solved by the invention] In the above-mentioned conventional technology, the method of using shaped steel etc. is difficult to prepare for corner welding and post-processing. It is extremely inefficient as it requires a lot of work and requires countermeasures against deformation due to welding.
Moreover, it was uneconomical.

Furthermore, although the means of relative movement using a single copper plate is relatively economical compared to the above-mentioned means of shaped steel, the box-shaped cross-sectional shape shown in Figure 1 has changed. For objects, the function as a wall cannot be maintained at the location where the cross-sectional shape changes, and welding cannot be performed.

Furthermore, even if the cross-sectional shape is the same, the welding side of the box-shaped cross-section becomes convex due to welding heat input during welding, creating a gap between the corner and the copper plate, causing flux and molten slag to form. It may flow out and disturb the bead appearance, making it impossible to weld.

Furthermore, when the molten slag comes into direct contact with the copper plate, the bottom surface of the copper plate becomes seriously damaged and loses its function as a wall. There is a serious problem in that when molten slag is attached and stretched, the appearance of the bead is significantly disturbed.

The purpose of this invention is to make it possible for a part of the welding copper plate to rotate vertically, that is, to bend, according to the shape of the corner, and also to be able to turn left and right. By providing a This is what we intend to provide.

[Means for Solving the Problems] The configuration of the present invention that solves the problems of the prior art is that in a welding device equipped with a welding electrode that is located at a welding corner of an object to be welded such as a box-shaped cross-sectional structure, A set of two welding copper plates are provided along both sides of the welding corner of the object to be welded, and the electrode is disposed in the middle, and the middle part of both welding copper plates is divided into two at symmetrical positions. to form a fixed copper plate and a rotating copper plate that rotates in the vertical direction, and abutting surfaces of the fixed copper plate and the rotating copper plate are formed as circular arc surfaces centered on horizontal pins, and at least The above-mentioned rotating copper plate located outside the welding corner of the welding object is pivotally supported so as to be vertically movable with respect to the above-mentioned fixed copper plate on a rotating copper plate provided so as to be horizontally pivotable with a vertical pin,
Cooling channels are separately provided in the entire length of the lower part of both of the copper plates for welding, and the set of two copper plates for welding is supported so as to be movable in the welding apparatus main body through the support structure, and can move up and down. The invention is characterized in that a turning mechanism provided on the support structure is connected to at least the outer rotating copper plate and the turning copper plate.

[Operation] When the object to be welded is a box-shaped cross-sectional structure whose cross-sectional shape changes, at least the outer welding copper plate is divided into three parts, and the vertical movement of the rotating copper plate and the rotation of the rotating copper plate are controlled. Shape changes are followed by the turning action, heat resistance is addressed by a forced cooling water flow path, and the welding copper plate is pressed using only the weight of the welding copper plate itself after the entire weight of the mechanism is combined. Ensure that the contact is secure.

[Embodiment] Next, details of an embodiment of the present invention will be described with reference to the drawings.

Fig. 1 is a perspective view showing an example of the object to be welded to which the present invention is applied, Fig. 2 is a front view, Fig. 3 is a plan view of the same, and Fig. 4 is a front view of a copper plate for welding placed outside. , FIG. 5 is a front view of a welding copper plate disposed inside, FIG. 6 is a plan view of a set of two welding copper plates, and FIG. 7 is a perspective view of the same.

1 in FIG. 1 is a box-shaped cross-sectional structure showing an example of a welded object to which the welding apparatus of the present invention is applied, and this welded object 1 is composed of a component 2 called a skin plate. In addition, 3 is the above-mentioned component 2
The cross-sectional shape of the welded object 1 changes in two directions at the corner formed by the comrades.

4 in FIG. 2 is a frame that constitutes a part of the welding device main body (not shown), and the welding copper plate structure A, which is the main part of the present invention, is attached to the frame 4 by a support structure B. It is being In the figure, 5 is a welding electrode attached to the welding device main body, 6 is a welding wire, and the welding electrode 5 is configured to automatically measure the corner 3 with respect to the welding device main body. .

Next, the configuration of the welding copper plate structure A will be explained. Reference numerals 7 and 8 designate a set of two copper plates for welding, which are placed on both sides of the corner portion 3 and with the welding electrode 5 disposed in the middle, one of which is the copper plate 7 for welding. The other welding copper plate 8 is disposed on the outside of the corner 3 and the other welding copper plate 8 is placed on the inside of the corner 3, and as shown in FIG. A standing posture is maintained with respect to the object 1. Further, the middle parts of both the welding copper plates 7 and 8 are divided into two parts at symmetrical positions to form fixed copper plates 7a and 8a and rotating copper plates 7b and 8b that rotate in the vertical direction.
As is clear from Figures 7 to 7, the fixed copper plate 7a and the rotating copper plate 7b, and the fixed copper plate 8a and the rotating copper plate 8b.
The abutting surface with the rotating copper plates 7b and 8b is formed by an arcuate surface centered on the axis of the horizontal pin 9 that rotatably supports the rotating copper plates 7b and 8b. The horizontal pin 9 is fixed to a mounting plate 10 having one end fixed to the outer surface of the fixed copper plates 7a, 8a.

Reference numeral 11 denotes a stopper fixed to the outer surface of the rotating copper plates 7b, 8b, and the stopper 11 is provided close to the inner end of the mounting plate 10. ,
Inclined surfaces 1 symmetrically in the vertical direction with the center as the border
0a and 11a, and the mounting plate 10 and the stopper 1 are connected so that the central chevron-shaped protrusions abut each other.
By butting 1, the fixed copper plates 7a, 8
When the rotating copper plates 7b, 8b rotate in the vertical direction with respect to a, the inclined surface 11a of the stopper 11 comes into superimposed contact with the inclined surface 10a of the mounting plate 10, so that the rotating copper plates 7b, 8b The amount of vertical movement of 8b is regulated. In the figure, reference numeral 12 denotes a connecting plate that connects the outer ends of both the fixed copper plates 7a and 8a, one of which is the fixed copper plate 8a, that is, the welding copper plate 8.
As shown in FIG. 2, it is attached so that it can be moved and fixed in the lateral direction by the relationship between the horizontal elongated hole 13 provided in the connecting plate 12 and the tightening bolt 14, and the distance between the two copper plates 7 and 8 for welding is fixed. It is possible to make adjustments. The tightening bolt 14 is screwed into a mounting plate 15 provided at the outer end of the fixed copper plate 8a.

Further, as is clear from FIGS. 6 and 7, a rotating copper plate 7c is provided on the outer fixed copper plate 7a, and this rotating copper plate 7c and the rotating copper plate 7b
are connected by the structure described above. The pivoting copper plate 7c and the fixed copper plate 7a are in contact with each other so as to be able to pivot through an abutting circular arc surface 7d formed around the axis of a vertical pin 16 provided on the outside. Mounting plates 17 separately provided at the outer ends of the plate 10 and the fixed copper plate 7a are each pivotally supported.

Cooling water channels 18a, 18b, and 18c are formed along the plate surfaces at the lower portions of the fixed copper plate 7a, the rotating copper plate 7b, and the rotating copper plate 7c, respectively, and the terminal ends of the cooling water channels 18a and 18b The starting end of , the terminal end of 18b and the starting end of 18c are connected by bypass pipes 19a, 19b made of flexible pipes, and the cooling water flow path 18a
A water supply fitting 20a is connected to the starting end of 18c, and a drainage fitting 20b is connected to the terminal end of 18c. Further, cooling water channels 21a, 21 are provided at the bottom of the other fixed copper plate 8a and rotating copper plate 8b, which are aligned with the plate surface.
b, and the terminal end of the cooling water flow path 21a and the starting end of the cooling water flow path 21b are connected by a bypass pipe 22 made of a flexible pipe. A water supply fitting 23a is connected to the starting end of the cooling water passage 21a, and a drainage fitting 23b is connected to the terminal end of the cooling water passage 21b. Further, the drain fitting 23b is inserted into a guide slot 24 provided in the connecting plate 12 in order to move laterally together with the welding copper plate 8. 25 shown in FIG. 3 is the fixed copper plate 7a, 8
A lock mechanism 26 prevents vertical rotation of the rotating copper plates 7b and 8b with respect to a, and a lock mechanism 26 prevents the rotating copper plate 7c from rotating. In the above embodiment, the swirling copper plate 7c was provided only on one of the welding copper plates 7, but the same structure was provided on the other welding copper plate 8.
It is not limited to what is shown in the drawings, as it can also be constructed in any other way. The welding copper plate structure A is configured as described above.

Next, a support structure B for attaching the welding copper plate structure A to the frame 4 of the welding apparatus main body will be explained. The structure is clearly shown in FIGS. 2 and 3, and 27 is a bracket attached to the lower left and right sides of the frame 4, and both brackets 2
7, that is, the end on the side of the welding copper plate structure A, there are provided linear slide members 28 that guide the welding copper plate structure A in the vertical direction, and both linear slide members 28 A linear guide member 29 is attached to each opposing surface side.

The linear guide member 29 includes guide rods 3 provided on both sides of a moving frame 30 having a rectangular planar shape.
The movable frame 30 is connected to a handle mechanism 31 provided on the bracket 27, and when the handle mechanism 31 is rotated, the movable frame 30 moves toward the object 1 to be welded. Corner 3 of
It is configured to move forward and backward in a direction orthogonal to the direction. One of the fixed copper plates 7a is fixed to a connecting rod 32 whose one end is fixed to the movable frame 30, and the other fixed copper plate 8a is movably connected. That is, the welding copper plate structure A can follow the movement of the moving frame 30. In addition, the sliding adjustment of the other fixed copper plate 8a attached to the connecting rod 32 is made on the upper surface of the mounting plate 15 attached to the end of the fixed copper plate 8a, similar to the sliding structure of the fixed copper plate 8a with respect to the connecting plate 12 described above. A tightening bolt 33 is inserted into a guide slot 35 of a plate 34 provided below the end of the connecting rod 32. Reference numeral 36 denotes a horizontal mounting plate with one end attached to the movable frame 30, and the vertical pin 16 is placed between the ends of the mounting plate 36.
The upper and lower ends of the welding plate structure A are fixed, and the welding copper plate structure A is supported by the mounting plate 36 and the connecting rod 32.

37 is a handle mechanism attached to the bracket 27, and the bracket 27 is provided with an operating rod 38 which is moved forward and backward by the handle mechanism 37. This operating rod 38 has the function of rotating the above-mentioned rotating copper plate 7c together with the rotating copper plate 7b.
As shown in the figure, on the outer surface of the rotating copper plate 7b,
A guide plate 40 having an arc-shaped guide hole 39 centered on the axis of the horizontal pin 9 is attached, and a connector 41 is slidably connected to the guide hole 39 of the guide plate 40. 41 and the end of the operating rod 38 are connected by a free joint 42. The support structure B is constructed in this manner, and the welding copper plate structure A is attached to the frame 4 of the welding apparatus main body via the support structure B.

[Effects of the Invention] As described above, according to the configuration of the present invention, the following effects can be obtained.

(a) At least, the rotating copper plate 7c and the rotating copper plate 7b formed on the outer welding copper plate 7 are rotatable, and the rotating copper plate 8b of the inner welding copper plate 8 and the rotating copper plate Since 7b can be rotated in the vertical direction, it can always function as a wall for the corners of the welded object whose cross-sectional shape changes as shown in Fig. 1, preventing flux and melting. This prevents slag from flowing out and provides a beautiful bead appearance.

(b) The function as a wall can be ensured in response to changes in welding of the object to be welded.

(c) A cooling water flow path is formed along the entire length of the bottom of each copper plate for welding to provide forced cooling, so it has sufficient heat resistance and no thermal damage occurs.

(d) After applying the weight of the support mechanism and sufficiently pressing the welding copper plates to the corners, rotate the rotating copper plates 7b and 7a.
By bringing the copper plates into contact with each other using only their own weight, the function as a wall can be ensured over the entire length of the copper plate, improving the workability of corner welding and stabilizing welding quality.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of the object to be welded to which the present invention is applied, Fig. 2 is a front view, Fig. 3 is a plan view of the same, and Fig. 4 is a front view of a copper plate for welding placed outside. , FIG. 5 is a front view of a welding copper plate disposed inside, FIG. 6 is a plan view of a set of two welding copper plates, and FIG. 7 is a perspective view of the same. A... Copper plate structure for welding, B... Support structure,
4... Frame, 5... Welding electrode, 7, 8... Copper plate for welding, 7a, 8a... Fixed copper plate, 7b, 8b
...Rotating copper plate, 7c...Swivel copper plate, 9...Horizontal pin, 10...Mounting plate, 12...Connecting plate, 16...
Vertical pin, 17...Mounting plate, 18a, 18b, 1
8c...Cooling water flow path, 19a, 19b...Bypass pipe, 20a...Water supply fitting, 20b...Drainage fitting, 21a, 21b...Cooling water flow path, 22...
Bypass pipe, 23a... Water supply fitting, 23b...
...Drainage fitting, 25, 26...Lock mechanism, 27...
... Bracket, 28 ... Linear slide member, 2
9... Linear guide member, 30... Moving frame, 30
a... Guide rod, 31... Handle mechanism, 32
... Connecting rod, 36 ... Mounting plate, 37 ... Handle mechanism, 38 ... Operation rod, 39 ... Guide slot,
40... Guide plate, 41... Connector, 42... Free joint.

Claims (1)

[Scope of Claim for Utility Model Registration] In a welding device equipped with welding electrodes located at the welding corners of an object to be welded, such as a box-shaped cross-section structure, on both sides of the welding corners of the object, Further, a set of two welding copper plates with the electrodes disposed in the middle is provided, and the middle part of both welding copper plates is divided into two at symmetrical positions, and a fixed copper plate and a rotary member that rotates in the vertical direction are provided. a copper plate, and the abutting surfaces of the fixed copper plate and the rotary copper plate are formed as arcuate surfaces centered on the horizontal pin, and at least the above-mentioned circuits located outside the welding corner of the workpiece are formed. The movable copper plate is pivoted so as to be movable up and down on a rotating copper plate which is provided with a vertical pin so as to be horizontally swivelable with respect to the fixed copper plate, and a cooling water flow path is separately provided along the entire length of the lower part of both of the welding copper plates. A set of two copper plates for welding is supported through a support structure so as to be movable forward and backward and up and down in the welding apparatus main body, and at least the outer rotating copper plate and the rotating copper plate are supported by the support structure. A welding device characterized in that a turning mechanism provided in the is connected to the welding device.