JPH0636988B2 - Temporary attachment and welding equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a tacking and welding apparatus. More specifically, the present invention relates to a tacking / welding device that can be tacked and has a good bead appearance.

[Prior art]

For example, welding by a submerged arc welding machine is performed on a welded portion such as a bridge girder that requires a beautiful bead appearance.

However, the submerged arc welding machine has problems that not only temporary attachment is impossible but also adjustment of welding conditions is difficult. Further, it is more expensive than the carbon dioxide semi-automatic arc welder.

On the other hand, the carbon dioxide semi-automatic arc welder can be temporarily attached,
Further, although the welding conditions can be easily adjusted, there is a problem that it is difficult to obtain a beautiful bead appearance.

[Object of the Invention]

The present invention has been made to eliminate such drawbacks, it is possible to temporarily attach, and the bead appearance is good, further adjustment of welding conditions is easy, and cheaper than a submerged arc welder. The purpose is to provide a temporary tacking and welding device.

[Structure of Invention]

The tacking and welding apparatus of the present invention that can achieve the above object is a carbon dioxide semi-automatic arc welding machine with a submerged arc welding torch disposed behind a preceding carbon dioxide semi-automatic arc welding torch. It is characterized by being used as a welding power source.

As described above, according to the present invention, not only temporary attachment by the preceding carbon dioxide gas semi-automatic arc welder can be performed, but also carbon dioxide semi-automatic arc welding can be performed because tandem main welding can be performed by the carbon dioxide gas semi-automatic arc welding and submerged arc welding. The bead appearance is better than that of welding using a welding machine, and a large leg length can be obtained. Further, since the carbon dioxide semi-automatic arc welding device is cheaper than the submerged arc welding device, it is cheaper than the normal tandem submerged arc welding device and the welding conditions can be easily adjusted.

〔Example〕

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

FIG. 1 is a side view of a tacking / welding apparatus according to the present invention. According to a girder material assembly welding apparatus 1 (see FIG. 2) including the tacking / welding apparatus, for example, FIG. The I-beam 100 having the camber C as shown also has a good bead appearance.

The girder material assembling and welding apparatus 1 includes one web material w, an assembling means 2 for assembling two flange materials f and f into an I-shape, and a girder 4 as a traveling body that moves along the assembling means 2.
And a welding means 3 for welding the web material w and the flange material f to each other. Such assembling means 2,
The welding means 3 will be sequentially described.

(a) Assembling Means As shown in FIG. 2, the assembling means 2 comprises a web material supporting means 5 for supporting the web material w in a plane and flange materials f leaning on both sides of the web material w. And a flange member supporting means 6 which is pressed in this state.

As shown in FIG. 3, the web material supporting means 5 is composed of a large number of rollers 15 and 15 a arranged in two rows along the longitudinal direction of the assembling means 2. As shown in FIG. 2, one roller 15 is rotatably attached to the fixed frame 11, and the other roller 15a is rotatably attached to the moving frame 11a. Then, the web material w is supported in a plane by these rollers 15, 15a.

Further, as shown in FIG. 2, the flange material support means 6 is arranged on each side of the web material support means 5. One of the flange member supporting means 6 is a flange stand 1
Have six. The flange stand 16 is undulated by a large number of hydraulic cylinders 17 attached to the fixed frame 11.

Further, as shown in FIG. 2, the flange stand 16 is provided with a large number of stoppers 18 for supporting the reaction force. Further, the fixed frame 11 has a stopper receiver 20.
But each is fixed. Further, the stopper receiver 20 is provided with a continuous stopper 21. As shown in FIGS. 7 to 9, the continuous stopper 21 is provided with an engaging portion 23 having a wedge-shaped cross section and a releasing portion 22 having a rectangular cross section adjacent to the engaging portion 23.
When it is positioned at 0, the stopper 18 is supported by the stopper receiver 20 and the release portion 22 is supported by the stopper receiver 2.
When the position is 0, the engagement between the stopper 18 and the stopper receiver 20 is released.

The other flange member support means 6 is a flange stand 16a.
have. The flange stand 16a is undulated by a large number of hydraulic cylinders 17a attached to the moving frame 11a.

Further, as shown in FIG. 2, the flange stand 16a includes
A large number of stoppers 18a that support the reaction force are attached. Further, stopper receivers 20a are fixed to the moving frame 11a, respectively. A continuous stopper 21 is arranged on the stopper receiver 20a. As shown in FIGS. 7 to 9, the continuous stopper 2
The reference numeral 1 includes an engaging portion 23 having a wedge-shaped cross section and a releasing portion 22 having a rectangular cross section adjacent to the engaging portion 23. When the engaging portion 23 is positioned on the stopper receiver 20a, the stopper 18a is supported by the stopper receiver 20a. , When the release portion 22 is located on the stopper receiver 20a, the stopper 1
The engagement between 8a and the stopper receiver 20a is released.

Further, as shown in FIG. 3, the flange stands 16, 16a
A flange width approaching device 25 is attached to each of them at regular intervals. Each flange width device 25 has a pair of rollers 26, 26.
The flange material f is made up of flanges 16 and 1 by
The width of each of the centers of 6a is adjusted. That is, the tenth
As shown in the figure, a pair of blocks 28, 28 is slidably mounted between the pair of left and right grooved rails 27, 27. Further, each block 28 has a shaft 28 as shown in FIG. 29 is fixed, and the roller 26 is rotatably attached to the shaft 29. The shaft 29 has a sufficient length and is configured so that the flange member f can move in the axial direction together with the roller 26 according to the change of the camber. A stopper plate 30 for preventing the roller 26 from falling off is fixed to the tip of the shaft 29.
Also, as shown in FIG. 10, a pair of grooved rails 2
A pinion gear 32 is arranged in the central portion of a base 31 that fixes 7, 27. The pinion gear 32 is arranged between a pair of round racks 33, 33, one round rack 33 is fixed to one block 28, and the other one round rack 33 is fixed to the other block 28. It is fixed. In addition, each block 28 is provided with a hole 34 into which a round rack 33 attached to the block 28 facing the block 28 can enter. In addition, the pinion gear 32 is the base 31
It is driven by a hydraulic motor 35 attached to the.

Further, as shown in FIG. 3, the flange stands 16, 16a
Each of them is provided with a large number of air cylinders 37 for pressing a flange. When the flange member f is pressed by a flange pressing member 38 (see FIG. 1) provided on the head of the flange member f, The web material w is metal-touched over its entire length.

Further, as shown in FIG. 2, a leveling rail 39 is arranged between the roller 15 and the flange stand 16.
Wedge-shaped leveling 40 and 41 are provided between the leveling rail 39 and the fixed frame 11, respectively, one of which is fixed to the leveling rail 39 and the other of which is fixed to the fixed frame 11. It is fixed.
Then, by moving the leveling rail 39 in the longitudinal direction (direction penetrating the paper surface), the web material w can be positioned at the center of the flange material f. Similarly, a leveling rail 39 is provided between the roller 15a and the flange 16a. Between the leveling rail 39 and the moving frame 11a,
Wedge shaped levelers 40 and 41 are provided,
One of them is fixed to the leveling rail 39, and the other is fixed to the moving frame 11a. Then, by moving the leveling rail 39a in the longitudinal direction (direction penetrating the paper surface), the web material w can be positioned at the center of the flange material f.

Then, in FIG. 2, the flange stands 16, 16a
When the hydraulic motor 35 is rotated after the flange material f is placed on each of them, the rollers 26, 26 approach each other, and the flange material f respectively It is supported at the center of the flange stands 16 and 16a.

Then, when the hydraulic cylinders 17 and 17a are operated,
The flange stands 16 and 16a rise up as shown by the solid lines. At this time, the flange stands 16 and 16a are slightly
When the engaging portions 23 of the respective continuous stoppers 21 are positioned on the stopper receivers 20 and 20a by tilting inward, and then slightly returned to their original positions, the lower ends of the stoppers 18 and 18a are engaged with the stopper receivers 20 and 20a, Flange stand 16, 16a
Can support the reaction force of.

Then, the web material w is placed on the rollers 15 and 15a, and then the leveling rails 39 and 39 are moved in the longitudinal direction thereof.
39 moves up and down, and both ends of the web w are aligned with the center of the flange material f.

Next, when the moving frame 11a is moved to the fixed frame 11 side, the web material w is pressed against the flange material f on the fixed frame 11 side by the flange material f on the moving frame 11a side.

Then, when the air cylinders 37 for pressing the flanges 37 are operated, the flange materials f on both sides are strongly pressed against the web material w. Even if the web material w is a cambered web material, the flange material f and the web material w are removed. The material w sticks over the entire length.

As shown in FIG. 2, the moving frame 11 a is arranged on a rail 47 laid on the floor 7 so as to be traversable. Further, a large nut 43 is attached to the leg portion 46 of the moving frame 11 a provided with the moving wheel 42, and a screw shaft 44 screwed to the nut 43 is provided parallel to the rail 41. Then, each screw shaft 44 is rotated by a frame moving motor 45, and the forward and reverse rotations of the motor 45 cause the moving frame 11a to approach the fixed frame 11 and separate from it.

(b) Welding means As shown in FIG. 2, the welding means 3 is attached to a girder 4 as a traveling body, and a predetermined welding is performed in a direction that penetrates the paper surface by the girder 4, that is, in the longitudinal direction of the assembling means 2. Move at speed. The girder 4 has a gate shape and is mounted on a pair of left and right rails 51, 51. The girder 4 is provided with saddles 52, 52 on the left and right sides thereof, and each saddle 52 is provided with a driven wheel 53 and a drive wheel 54, as shown in FIG. As shown in FIG. 6, both have flanges 55, 55 on both sides, but the drive wheel 54 is rotated by a drive gear 57 that meshes with one flange 55 of the drive wheel 54. The drive gear 57 is rotated by the servo motor 58 shown in FIG. The servomotor 58 is provided with an encoder (not shown), and the pulse signal from the encoder allows the girder 4, in other words, the distance traveled by the copying sensors 81, 81a to change every second, depending on the controller 9 such as a computer.
Input to 0. Further, as shown in FIG. 6, each saddle 52 holds each rail 51 by a pair of rollers 59, 59 provided in front of and behind it.

As shown in FIG. 2, the girder 4 has a moving frame 11a.
A girder stage 61 that can move in the lateral direction of the girder 4, that is, in the lateral direction of the assembling means 2 is provided above. As shown in FIG. 3, the girder stage 61 is slidably attached to a pair of guide rails 62, 62 laid in the lateral direction of the girder 4. And
A rack 63 is laid parallel to one of the rails 62, and a pinion 64 that meshes with the rack 63 is driven by a motor 65 installed on the girder stage 61.

As shown in FIG. 1, the first arm 66a fixed to the girder stage 61 is provided with a roller 68a which is moved up and down by an air cylinder 67a. The roller 68a presses the web material w against the flange leveling rail 39. To be In addition, as shown in FIG. 1, the second arm 69 fixed to the girder stage 61.
Is provided with an elevating arm 71 which is moved up and down by an elevating slider 70. The lifting arm 71 has two traverse sliders 72a, 72a,
73a is provided. A torch 74a for carbon dioxide semi-automatic arc welding, which is used at the time of temporary attachment and at the time of main welding, is attached to the first transverse slider 72a, and a flux for dropping flux used at the time of main welding is attached to the second transverse slider 73a. Duct 75a, torch 76a for submerged arc welding, and duct 77a for flux recovery. In addition, the third fixed to the lifting arm 71
A copy sensor 81a for detecting the position of the flange material f is attached to the arm 78a. This copy sensor 81
a is configured as shown in FIG. 14, and the copy element 82 is L
It is attached to a rod 85 of a cylinder 84 through a V-shaped bracket 83. Further, the rod 86 of the copying sensor 81a is fixed to the bracket 83 and is adapted to be synchronized with the rod 85 of the cylinder 84. Further, the copying sensor 81a includes an encoder 87, and the position of the copying element 82, that is, the flange material f is input to the controller 90 every moment by the pulse signal from the encoder 87.

By the way, as shown in FIG. 1, since the copying sensor 81a precedes the preceding torch 74a by l ₁ , the controller 90 causes the flange f stored by the controller 90 to be stored by the controller 90 from the time when the copying sensor 81a runs by l _1. The position of the leading torch 74a is controlled so as to restore the position of. Further, since the copying sensor 81a precedes the trailing torch 76a by l ₂ , the controller 90 starts the flange f stored by the controller 90 from the time when the copying sensor 81a runs by l _2.
The position of the trailing torch 76a is controlled so as to restore the position of.

Heights of the copying sensor 81a, the carbon dioxide semi-automatic arc welding torch 74a, the flux dropping duct 75a, the submerged arc welding torch 76a, and the flux collecting duct 77a are adjusted by the elevating slider 70.

On the other hand, on the girder stage 61, as shown in FIG. 5, a flux hopper 91a, two wire supply devices 92a and 93a, a flux recovery device 94a, and two welding power sources 95a and 96a are installed. There is. The welding power source uses the welding power source for carbon dioxide semi-automatic arc welding machine,
For the wire (core wire), the core wire for carbon dioxide semi-automatic arc welding machine is used.

Further, as shown in FIG. 2, a roller 68 for holding the web is arranged so as to face the flange leveling rail 39 on the fixed frame 11 side. In addition, the fixed frame 11
In the upper part of the girder 4, the girder stage 61
Similar to (see FIG. 1), a copy sensor 81, a torch 74 for a carbon dioxide semi-automatic arc welding machine used for temporary attachment and main welding, a duct 75 for flux dropping used for main welding, a submerged arc welding machine A torch 76, a flux collecting duct 77, and the like are attached.

Then, the leading torch 7 is moved by the controller 90.
4 and the trailing torch 76 are similarly controlled to restore the position of the scanning sensor 74. Further, as shown in FIG. 5, a flux popper 91, two wire supply devices 92, 93, a flux recovery device 94, and two welding power sources 95, 96 are mounted on a pedestal 97 installed on the girder 4. Is provided. The welding power source is a carbon dioxide gas semi-automatic arc welding machine, and the wire (core wire) is also a carbon dioxide gas semi-automatic arc welding machine core wire.

The welding of the web material w and the flange material f assembled in the I-shape by the assembling means 2 is performed in two steps: temporary attachment and main welding.

As shown in FIG. 3, the girder 4 usually includes the assembly means 2
After the web material and the flange material are assembled into an I-shape by the assembling means 2, the girder 4 is advanced in the direction of the arrow A at the material starting end for carbon dioxide semi-automatic arc welding. The torches 74 and 74a are set in the corners of the web material and the flange material. The positions of the flange material f stored by the copy sensors 81 and 81a are set to the torches 74 and 7 respectively.
4a moves forward while being restored later, and the corners of the web material w and the flange material f are temporarily attached to the left and right simultaneously.

Then, the girder 4 is once returned to the starting point of the material, and then the preceding carbon dioxide gas semi-automatic arc welding torches 74, 7 are used.
4a and a torch 76 for submerged arc welding which follows,
When 76a is set on the corners of the web material and the flange material and the girder 4 is moved forward in the direction of arrow A, the position of the flange material f stored by the copy sensors 81 and 81a is restored later and the web material w and the flange are restored. The corners of the material f are simultaneously main welded on the left and right.

Then, bring the flange pressing cylinder 37 into the pulled state,
When the roller 26 of the flange width aligning device 25 is retracted,
An I-digit 100 as shown in FIG. 15 is obtained.

〔The invention's effect〕

As described above, according to the present invention, not only temporary attachment by the preceding carbon dioxide semi-automatic arc welding torch can be performed, but also main welding can be performed by the carbon dioxide semi-automatic arc welding torch and submerged arc welding torch. The bead appearance is better than welding using a carbon dioxide semi-automatic arc welding device. Further, since the carbon dioxide semi-automatic arc welder is cheaper than the submerged arc welding apparatus, it is cheaper than the normal submerged arc welding apparatus and the welding conditions can be easily adjusted.

[Brief description of drawings]

1 is a side view of a tacking / welding apparatus according to the present invention, FIG. 2 is a front view of a girder assembly welding apparatus including the tacking / welding apparatus of the present invention, and FIG. 3 is a plan view thereof. 4 is the side view,
5 is a plan view of the girder, FIG. 6 is a plan view of the saddle,
FIG. 7 is a plan view of the continuous stopper, and FIG. 8 is VI of FIG.
I-VII cross-sectional view, FIG. 9 is a VIII-VIII cross-sectional view of FIG. 7, FIG. 10 is a front view of the flange width aligning device, and FIG. 11 is a side view including a partial cross section of the flange width aligning device. 12 is a sectional view taken along line XI-XI in FIG. 10, FIG. 13 is a side view of the flange leveling rail, FIG. 14 is an enlarged explanatory view around the torch, and FIG. 15 is a front view of the I-digit. 74 ... Torch for carbon dioxide semi-automatic arc welding, 76 ...
Submerged arc welding torch, 95, 95a, 96,
96a ... Carbon dioxide semi-automatic arc welding power source.

Claims (1)

[Claims] 1. A torch for a submerged arc welding machine is disposed behind a preceding torch for a carbon dioxide gas semi-automatic arc welding machine, and a welding power source for both is used as a welding power source for a carbon dioxide semi-automatic arc welding machine. Characteristic temporary attachment and welding device.