KR100193797B1 - Upright Electro Gas Welding Equipment - Google Patents

Abstract

[assignment]

Improvement of the degree of freedom of adjustment of the weld heat input of each section of the cross section is ensured and the accurate close contact of the sliding copper support. Improved flexibility in adjusting the feed position of the fusion wire. Solution means: rail 1270; means for fixing the rail to the plane of the vertical steel plates WL, WR 120a; bogie 100, often in the z direction along the rail; upright welding torch T; for improvement Torch support mechanisms A, C to F for supporting a predetermined posture and the copper support portion P are orthogonal to the axis g9 parallel to the direction z in which the improvement extends and to the direction z, Copper freely rotatable about the axis g12a substantially parallel to the plane and freely supported in the direction x orthogonal to the axes g9 and g12a, and further pressed in a direction approaching the steel plate. And a support part support mechanism (G) for supporting the support part (P) in a predetermined posture with respect to the improvement.

Description

Upright Electro Gas Welding Equipment

1 is a plan view looking down one embodiment of the present invention from the top direction.

FIG. 2 is a rear view seen from the direction indicated by the dashed-dotted arrow 2A in FIG.

3 is a left side view seen from the direction indicated by the dashed-dotted line 3A in FIG.

4 is a longitudinal cross-sectional view of the y-direction adjusting mechanism A in the direction indicated by the dashed-dotted arrow 4A in FIG.

5 is a longitudinal cross-sectional view of the x-direction adjusting mechanism C in the direction indicated by the dashed-dotted arrow 5A in FIG.

6 (a) is a longitudinal cross-sectional view of the pressing mechanism G of the copper support portion as seen in the direction of the arrow 8A shown in FIG.

(b) is a cross-sectional view of the pressurizing mechanism G of a copper support part seen from the direction of the arrow 8B shown to (a).

* Explanation of symbols for main parts of the drawings

A: Y direction adjusting mechanism of torch T B: Copper support part X direction driving mechanism

C: X direction control mechanism of torch (T) D: Vibration mechanism of torch (T)

E: Entry angle adjusting mechanism of torch (T) F: Left and right angle adjusting mechanism of torch (T)

α: improvement T: welding torch

WL: Left vertical plate WR: Right vertical plate

100; Balance 108,109 / 106,107: left / right roller

111: pinion 120: rail stand

121a, 121b: Magnet 122: Aluminum plate

124: disassembled rock 124a, e3b, g9, g12a: pin

126a: support arm 126b: support arm

127: rail 128: rack

a1, c7, d30: base a4, c1, d1, f1, g3: handle

a5: Gear shaft a7, a8, Gc1, Gc20: Bevel gear

a9, c5, f6, g4a: screw rod a10: bush

a11, c8, b3: Spline side a16, c6, g5: Boss

c4: cover c24: attachment arm

d3: axis d25, g4: support arm

e1: stopper plate e2; Fixed plate

e2a: Guide groove e3: Adjustment plate

e11: adjusting screw x2: curved tip

f4, b4, b5: support member f4aa: axis

f6a: nut f7: torch clamping member

f7c: round hole f8: handle

kf, g6: Compression coil spring g1: Sleeve

g2: Adjustment sleeve g11: Supporting block

P: copper support p1: copper block

p1a: jg with coolant, jwa: hose joint

p2: shield gas supply pipe p2a: opening

[TECHNICAL FIELD OF THE INVENTION]

The present invention relates to an upright electrogas welding apparatus.

[Prior art]

Conventionally, as an upright automatic welding method, electro gas welding, electro slag welding, and gas seal torch rocking welding are used for shipbuilding, cylindrical oil storage tanks, as well as steel, bridges, heavy field equipment, and steel making machines. It is mainly used for welding steel walls.

The former is highly efficient, but welding heat is high in welding high tensile steel, which causes deterioration of notch toughness of the weld metal and the base material heat affected zone. In addition, since the latter is aimed at improving the quality of the welded part, there is a sacrifice in welding efficiency and it is said that the incidence of weld defects between layers is high because it is a multilayer welding. In recent years, the construction of large oil storage tanks using high-strength steel is being continued, and welding at low temperature tends to be strongly carried out in order to maintain the integrity of the heat-affected zone. There is a tendency for this to be strongly demanded, and in response to such demands, the electrogas welding, which uses a small diameter flux garden wire to move the arc point at high speed vibration in the plate thickness direction, provides a low temperature for narrow improvement welding with a very small improvement in cross section. It is suitable for the erecting point of steel wall because it can be performed with high efficiency.

The apparatus for performing such electrogas welding is described schematically, in which the copper support of natural air cooling or water cooling is fixed vertically through glass tape on the back of the improvement (extending in the vertical direction (z)) between adjacent two steel plates. On the front side, a water-cooled sliding copper support part is placed, and a flat curved tip (welding member of the welding torch) is press-fitted into the space surrounded by the groove (opposed to the improvement) and the improvement of the sliding copper support part. It continuously feeds the wire with a small diameter flux through the curved tip while rapidly vibrating in the plate thickness direction (x) to the space, and also the curved tip (welding torch) and the sliding copper support part in the upper direction (z). Upright welding is performed while driving with).

The welding torch, the torch vibration device and the sliding copper support part are mounted on the rising welding bogie while automatically controlling the switching speed to high speed and low speed as the welding progresses. The shield gas is sent to the improvement space from the nozzle installed on the upper side of the sliding copper support using carbon dioxide gas, and the welding torch is vibrated in the thickness direction (x) of the steel sheet at 50 to 200 cycles / minute. In this way, the narrow improvement is welded without defects, and the synergistic effect of the high speed vibration and the continuous feeding of the wire with the small diameter flux results in a very fine and beautiful bead appearance (JP-A 63-66634). Japanese publication No. 1-2206).

By the way, in the above-described electro gas welding, the improved shape is determined according to the difference in sheet thickness or the finished product after welding when the thickness of the base material (steel plate) to be welded or the plate thickness of the base material is different. In order to increase the strength of the seam (original improvement part of the welding weight), the improvement of the base material corresponds to the shape and the angle of entry of the wire to the groove part of the copper support part opposite thereto (the molten metal pool formed in the improvement space) It is preferable to adjust the target position of the wire with respect to the pool to make the weld quality of each part of the seam cross section (x, y plane) uniform. In the upright electro-gas welding method disclosed in Japanese Patent Laid-Open No. 148155, the worker fixes the torch in the plate thickness direction (x) by manual angle adjustment (rotational movement angle about the y axis) before welding starts. That is, the entry angle of the welding wire is set in advance. Accordingly, the wire entry angle (cross angle with the z-axis) in the plate thickness direction (x) is adjusted to correspond to the improved shape and the groove shape of the sliding copper support part opposite thereto, and thus the enclosed with the groove of the improvement and copper support part. The target position of the wire can be determined in the molten metal pool formed into the space. In such a lower surface, the heat-affected portion of the base material is small, the penetration of the improved corner portions is constant, and uniform and beautiful beads are obtained.

[Problem to Solve Invention]

However, the method disclosed in Japanese Unexamined Patent Application Publication No. 54-148155 discloses an entry angle of the wire in the width direction y of the base material (the direction orthogonal to the plate thickness direction x and the direction in which the improvement extends z). There is a problem in that it is impossible to change. For example, when the plate | board thickness of a base material differs, when welding by the heat effect of the torch of the joint part from which plate | board thickness differs uniformly, the intensity | strength of the weld part of the base material side with a thin plate thickness will fall compared with the weld part at the base material side with a thick plate thickness. Such joints are not balanced in the joining balance between the two steel plates in durability, and deterioration partially occurs on the side of the base material having a thin plate thickness, and as a result, the durability of the entire joint is lowered. In order to make the strength of the joint part uniform as a whole, regardless of the plate thickness difference, it is necessary to reduce the penetration by reducing the heat-affected portion of the base metal-side improved side having a thin plate thickness as compared to the improved side of the base-material having a thick plate thickness.

In addition, even when the improvement shape is different, it is necessary to add more to the larger inclination angle of the improvement, and the wire inclination angle is changed, including the torch angle in the width direction y of the base material, and the inclination angle of the improvement is made. It is intended to increase the thermal effect on the side of the large substrate.

On the other hand, when there is a step in the plane of the steel plate forming the improvement in the face where the welding torch faces, in the y direction and the z direction, such as when the steel plate surface is unbalanced in the direction in which the improvement extends (z). If the steel plate surface near the improvement is not completely flat, the steel plate facing surface of the sliding copper support part partially floats on the steel plate surface, and in the worst case, the molten metal pool in the space formed by the groove of the improvement and sliding copper support part. Molten metal leaks out of the support. Normally, such leakage does not occur, but the penetration depth to the base material is different at the improved cross-section angles, and the uniformity of the welding quality is impaired. As described above, when there is a difference in plate thickness in the base material or when the improved shape is asymmetric about the z-axis, the heat distribution of each section of the improved cross section is adjusted by staggering the target position of the welding wire with respect to the asymmetry in the y direction according to the asymmetry. Preferably, in the y-direction parallel movement adjustment of the welding torch, the curved tip may come in contact with the sliding copper support part so that the welding wire cannot be set to the desired target position (posture).

It is a first object of the present invention to provide an upright electrogas welding apparatus capable of adjusting the welding heat input of each part of an improved cross section, and an upright elect which is surely adhered along the sliding copper support to the steel sheet to be welded. It is a second object of the present invention to provide a furnace gas welding apparatus, and to provide an upright electro-gas welding apparatus having a high degree of freedom in improving and adjusting the feeding position of the welding wire to the space surrounded by the groove of the sliding copper support. A second object is to provide an upright electro-gas welding apparatus having a high degree of freedom in adjusting and feeding the target position of the welding wire with respect to the space enclosed by the groove of the improved and sliding copper support.

[Means for solving the problem]

(1) the present invention is a rail member 127; The rail member 127; Rail fixing means (120a) for fixing the rail member (127) to the plane of the steel plates (WL, WR) having an improvement (α) extending substantially in the vertical direction (z) that can be erected vertically; A trolley (100) mounted on the rail member (127) and including an electric motor (MD) for driving driving, which is frequent in the direction (z) in which it extends along the rail member; Upright welding torch (T); The bogie-supported torch support mechanisms (A, C-F) for supporting the torch at a predetermined posture against the improvement; Copper support (P); And a support part support mechanism (G) supported by the bogie, which supports the copper support part in a predetermined posture with respect to the improvement.

The support part support mechanism G is perpendicular to the axis g9 parallel to the direction z in which the improvement extends and to the direction z, and substantially parallel to the plane of the steel plate. It is characterized by g12a) being freely rotated and supported freely in a direction x orthogonal to the two axes g9 and g12a, and further pressed in a direction approaching the steel plate.

In addition, in order to make an understanding easy, in parentheses, the code | symbol of a corresponding element or a considerable part of the Example which are shown in the drawing and described later is referred to.

According to this, since the copper support part P is free to rotate about both the z-axis and the y-axis, if there is a step | step in the plane of the steel plate which forms an improvement, there may be an imbalance in the steel plate surface in the z direction which an improvement extends. In either case, the copper support part P can take the posture which conforms to a steel plate surface.

And since the support part support mechanism G presses the copper support part P in the direction approaching the steel plate of an x direction, the copper support part P adheres closely to a steel plate surface in the attitude | position which follows a steel plate surface. Therefore, the rise of the copper support part P with respect to a steel plate surface is eliminated, the heat input of a part of an improved lateral cross section becomes more uniform, and welding quality improves.

Embodiment of the Invention

(2) Support portion The support mechanism G is orthogonal to the axis g9 parallel to the direction z in which the improvement extends and in the direction z, and is free to rotate about the plane of the steel plate and the substantially axis g12a. The sliders g4, g4a and g4b supporting the copper support portion, and the sliders g4, g4a and g4b are moved freely and in the direction x perpendicular to the two axes g9 and g12a. Rotation around the axis extending in the x direction of g4a, g4b) stops the guide sleeves 9g1, g5, and the pressing members g2, which are screwed to the end opposite to the copper supporting part side ends of the guide sleeves g1, g5. g3) and a compression coil spring g6, one end of which is in contact with the guide sleeves g1 and g5, the other end of which is supported by the pressure members g2 and g3, and which presses the slider g4 in the direction in which the steel sheet is moved toward the steel sheet. Include. According to this, by turning the pressing members g2 and g3 in a screwing / unwinding direction, the pressing members g2 and g3 move in the direction of approaching / falling away from the steel plate, and the pressing force of the compression coil spring g6 is increased. Get stronger / weak Therefore, the contact force of the copper support part with respect to the steel plate can be adjusted with the pressing members g2 and g3.

(3) In the above (2), the sliders g4, g4a and g4b penetrate the compression coil spring g6 and the pressing members g2 and g3 in the x direction and press members g2 in a direction approaching the steel sheet. and a stopper g4b for stopping the end of g3) from exiting, and the length of the sliders g4, g4a, g4b is equal to the end g3 of the pressing member g2, g3. This is the length to which a predetermined pressure is applied to the copper support portion. As a result, even if the pressing members g2 and g3 are turned in the pressing direction and tightened greatly, the pressing members g2 and g3 do not come off from the sliders g4, g4a and g4b. In addition, the operator always adjusts the clamping member g2, g3 by tightening the pressing member g2, g3 so that the ends of the sliders g4, g4a, g4b are flush with the ends g3 of the pressing members g2, g3. Pressure, that is, the optimum constant pressure can be applied.

(4) When the direction in which the improvement extends is z, and the direction perpendicular to the direction and orthogonal to the plane of the steel sheet is set to x, the torch support mechanisms A and CF are substantially parallel to the x and z planes, and are substantially predetermined with respect to x and z. Horizontal motion support mechanisms (e3, f4, f7) for supporting the rotary motion freely welding torch around the axis (f4aa) forming the angle of the angle and the horizontal motion angle adjustment mechanism (kf, f6) for determining the angle of the horizontal motion ).

According to this, the torch angle (welding target angle of the wire) with respect to the plane orthogonal to the plane of the steel plate, including the improved center line extending in the z direction, can be adjusted by the transverse rotation angle adjusting mechanisms kf and k6. When the torch is simply y-positioned by moving in the y-direction, the position where the curved tip (x2) touches the edge of the groove or the groove of the copper support part P is an adjustment boundary, but in this embodiment, the torch is adjusted to the adjustment limit. When the rotary motion is a rotary motion, the welding target position of the wire deviates more in the y direction than in the y-direction parallel movement. That is, the degree of freedom in adjusting the welding target position in the y direction is high.

(5) The lateral rotational motion adjusting mechanisms kf and k6 of the above (4) are freely supported around the axis f4aa by the first frame e3 supported by the bogie, and are configured to support the welding torch. A spring member kf for driving the two frames f7 in the rotational movement direction, a screw member f6 for preventing movement of the second frame f7 by the spring member kf, and a screw member f6 And a handle f1 attached thereto. According to this, the target position in the y direction of a welding wire can be adjusted by turning the knob 11.

(6) The (4) torch support mechanism (A, C ~ F) freely supports the lateral rotation movement support mechanism (e3, f4, f7) about the axis parallel to the y axis orthogonal to the x, z The forward and backward rotation support mechanisms e2, e2a, e5, and e1, and the forward and backward rotation angle adjustment mechanisms e11, e3, e2, and e1 that determine the angles of the forward and backward rotation motions. According to this, the target position of the welding wire in the x direction can be adjusted.

(7) The torch support mechanisms (A), (C) to (6), wherein the torch support mechanisms (A, C to F) are mounted on a trolley, and include a first arm (a11) movable in the y direction. a second torch support mechanism C, which is supported by a11) and includes a second arm c8 movable in the x direction: and is supported by a second arm c8, and the forward and backward rotation support mechanisms e2, e2a, supporting e5, e1 and supporting third arms d21a, d21b extending in the x direction, supporting third arms d21a, d21b, and vibrating the third arms d21a, d21b in the direction in which they extend; Vibration mechanism (D) including an electric motor for vibration drive; It includes. According to this, the welding torch T is set to the improved position (y direction) by the first torch support mechanism A, and the entry depth (x direction) for improvement by the second torch support mechanism C is set. And vibration in the depth direction x of improvement.

Other objects and features of the present invention will become apparent from the following description of the embodiments with reference to the drawings.

EXAMPLE

1 is a top view of an embodiment of the present invention. In FIG. 1, the direction from the back surface to the surface is perpendicular to the ground in the vertical direction (up and down; z), and in the direction indicated by the arrow y, to the left in the horizontal direction (left and right; y). At the same time, the direction indicated by the arrow x is made behind the horizontal front and rear directions x. That is, FIG. 1 is a view of the present embodiment from the upper direction, and the back surface seen from the direction indicated by the dashed line 2A in FIG. 1 is shown in FIG. 2 and the dashed line 3A in FIG. The left side seen from the display direction is shown in FIG. Hereinafter, the direction indicated by the arrow z at an angle is set to the upper direction, and the direction indicated by the arrow y is set to the left, and the direction indicated by the arrow x is made later. On the right side of the vertically oriented steel sheet WL (referred to as the left vertical plate WL), there is the same erected steel plate (WR; hereinafter referred to as the right vertical plate WR), and on the right edge of the left vertical plate WL The left edge of the vertical plate WR is opposite to each other, and an improvement α is formed between the two plates. The right end surface of the left vertical plate WL and the left end surface of the right vertical plate WR are inclined, respectively, and the improvement α is the position of the flat surface (hereinafter referred to as the surface) opposite the welding torch T in the x direction. Wide opening width

In this embodiment, the flat rail-like rail 127 is fixed to the side surface of the right vertical plate WR in parallel with the surface of the right vertical plate WR. The trolley | bogie 100 is attached to this rail 127. As shown to FIG.

1. Rail 127 and structure supporting it

The rail 127 is a rail stand 120 fixed to the upper end of the rm and a rail stand (not shown) of the same type fixed to the lower end, and fixed to the right vertical plate WR. Referring to FIG. 1, the rail stand 120 vertically attaches support arms 126a and 126b of the same length to the surface of the aluminum plate 122, and magnets 121a and 121b to the rear surface thereof. By adsorbing the 121a and 121b to the right vertical plate WR, the aluminum plate 122 is coupled in parallel to the right vertical plate WR, and the support arms 126a and 126b are upright with respect to the right vertical plate WR. It is done. The rail 127 is supported in parallel with the aluminum plate 122 by the support arms 126a and 126b, and becomes parallel to the right vertical plate WR.

The dismantling arm 124 is rotatably coupled to the aluminum plate 122 about the pin 124a. When dismounting the rail stand 120 from the right vertical plate WR, the arm 124 is turned with a relatively strong force counterclockwise on the first figure. At this time, the right end corner of the arm 124 touches the surface of the right vertical plate WR, and a strong separation force is applied to the aluminum plate 122 by the principle of lever, whereby the magnet 121a is the right vertical plate WR. It is separated from, and the adsorption force of the magnets 121a and 121b to the right vertical plate WR is reduced, and the aluminum plate 122 can be further rotated counterclockwise to separate from the right vertical plate WR.

In addition, when the rail 127 is long, one or more rail stands of the same structure are fixed again between the upper and lower rail stands 120. The rack 128 is fixed to the rail 127 extending in parallel thereto. The short side surface of the rail 127 is a mountain type (FIG. 1) in order to define the x direction position of the wheel of the trolley | bogie 100, and the left / right rollers 9108 and 109 supported by the trolley | bogie 100 are shown. / 106 and 107 sandwich the rail 127.

2. Balance (100)

The bogie 100 has a pinion 111 that engages the rack 128 of the rail 127, and the lift drive motor (not shown) of the bogie 100's inner circumference passes through the reducer (not shown). When the drive 111 rotates, the motor moves up (rising) or high (down) along the rail 127.

3. y-direction adjusting mechanism of torch (T) (A)

The trolley 100 has a y-direction adjusting mechanism A. In FIG. 4, the y direction adjustment mechanism A of the torch T shown by the dashed-dotted arrow 4A in FIG. 1 is demonstrated. The base a1, which is a rectangular parallelepiped, is fixed to the trolley 100 with its longitudinal direction parallel to the y axis. The base a1 has a round hole penetrating the central portion in the y direction on its left and right sides, and the round hole extending from the left end surface of the base a1 to the center portion is larger in diameter than the round holes in the right direction continued there. A circumferential boss a16 is inserted and fixed in the large diameter round hole, and a spline-grooved round hole penetrates the axis center of the boss a16 in the y direction.

The spline shaft a11 which splined on the peripheral surface is inserted in the round hole of the boss a16 inserted in the base a1, and the small diameter round hole of the base a1 continuous. The spline shaft a11 is guided to the boss a16 to be able to slide in the base a1 in the y direction, but cannot be rotated with respect to the boss a16 by spline coupling. The left end of the spline shaft a11 has a round hole penetrating in the z direction and is inserted between the upper and lower surfaces protruding from the right end of the attachment arm c24 (later). On the upper and lower surfaces of the right end of the attachment arm c24, screw holes cut in the opposite direction are drilled in the z-direction, respectively, and the attachment arm c24 is attached to the left end of the spline shaft a11 inserted therebetween. Is fixed to the bolt c1.

At the center of the shaft of the spline shaft a11, a screw hole extending in the left direction in parallel with the y axis is provided at the right end surface thereof, and a screw rod a9 having a right screw cut is coupled to the screw hole.

The right side opening of the base a1 by the round hole is smaller in diameter, and the bush a10 is fitted into the opening, and the right end of the screw rod a9 penetrates the bush a10. The bevel gear a8 is fixed to the tip end. A bevel gear a7 is engaged with the bevel gear a8, and a handle a4 is fixed to the gear shaft a5 on which the bevel gear a7 is mounted.

When the knob a4 is turned in the right screw direction, the screw rod a9 rotates in the right screw direction through the bevel gears a7 and a8. Thereby, the spline shaft a11 moves to the right direction. When the knob a4 is turned in the direction opposite to the direction of the right screw, the elements act in the opposite direction and the spline shaft a11 moves to the left.

Referring to FIGS. 1, 5 and 6, the other end of the "L" shaped arm c24, one end of which is fixed to the left end of the spline shaft a11, is almost the same as the y-direction adjusting mechanism A. The spline shaft c8 of the x direction control mechanism C of the torch T is fixed to the mold. With the movement of the spline shaft a11 in the y-direction, the x-direction adjusting mechanism (C: 1st and 5th) similarly moves in the y-direction (of the torch T by the y-direction adjusting mechanism A). y position adjustment).

4. X direction adjustment mechanism (C) of the torch (T)

Fig. 5 shows a longitudinal cross-sectional view of the torch T x direction adjusting mechanism C0 indicated by arrows 5A of one dotted line in Fig. 1. The base c7 has its longitudinal direction parallel to the x-axis, and the arm ( c24) and the y-direction adjusting mechanism A. It is supported by the trolley | bogie 100. Hereinafter, the x direction adjusting mechanism C of the torch T is demonstrated with reference to FIG. 1 and FIG. (c7) has a round hole that penetrates the center portion in the x direction, and a circumferential boss (c6) is inserted into and fixed therein.The boss (c6) has a spline groove round hole and a boss ( c6) is penetrated in the x direction.

The spline shaft c8 which splined on the circumferential surface is inserted in the round hole of the boss c6. The spline shaft c8 is guided to the boss c6 and can be slid in the base c7 in the x direction. However, the spline shaft c8 is splined and does not rotate relative to the boss c6. The spline shaft c8 has a screw hole, and a screw rod c5 is screwed in there. Combined. The opening of the rear surface of the base c7 by the round hole is further smaller in diameter, and the rear end of the screw rod c5 protrudes from the opening. A bush is fitted between the opening of the rear surface of the base c7 and the circumferential surface of the screw rod c5.

On the rear surface of the base c7, the front surface of the cover c4 without a lower surface and a rear surface (the lower surface and the left side in FIG. 5) is fixed by a hollow mass cube. A circular opening is drilled in the front surface of the cover c4 and is continuous with the opening in the rear surface of the base c7. The rear end of the screw rod c5 is rotatably supported by the opening at the rear of the base c7, and enters the inside of the cover c4 at the opening at the front of the cover c40.

A bevel gear Gc2 is fixed to the end of the screw rod c5. The bevel gear Gc1 is held by the bevel gear Gc20. The handle c1 is fixed to the gear shaft of the bevel gear Gc1. When the knob c1 is turned clockwise, the screw rod c5 enters the inside of the screw hole of the spline shaft c8, moves to the right of the x direction adjusting mechanism C, and moves the knob c1 counterclockwise. Turn to move left. Therefore, the position of the x direction of the torch T supported by the x direction adjustment mechanism C can be adjusted by turning the knob c1.

5. Vibration mechanism (D) of torch (T)

5 and 1, a vibrating mechanism D base d30 is fixed to the base c7 of the x-direction adjusting mechanism C0 of the torch T. The vibrating mechanism D is an electric motor. (Not shown) and a vibration mechanism (not shown) for converting the rotation into vibration in the x direction of the support arm d25 (FIG. 1) of approximately " L " type. The amplitude of can be adjusted by turning the handle d1 by the shaft d3, The fixing plate e2 of the entry angle adjustment mechanism E of the torch T is fixed to the support arm d25.

6. Entry angle adjusting mechanism of torch (T) (E)

Referring to FIGS. 1, 2, and 3 (particularly, FIGS. 2 and 3), the fixing plate e2 supported by the vibration mechanism D has an arch-shaped guide groove e2a. The adjustment plate e2 which is a substantially triangular flat plate is in surface contact with the fixed plate e2, and the pin e3b standing on the adjustment plate e3 enters the guide groove e2a. The adjusting screw e11 having a handle (lever) at the tip has a small diameter at the tip, and the screw passes through the through hole of the adjusting plate e3 and also passes through the guide groove e2a. It is screwed into the screw hole of the stopper plate e1 integral with the plate e2. By screwing in, the adjusting screw e11 tightens the fixing plate e2 and the adjusting plate e3 to the stopper plate e1, whereby the adjusting plate e3 is fixed to the fixing plate e2. do.

A plurality of screw holes are formed in the stopper plate e1 at predetermined pitches along the guide grooves e2a on the surface of the stopper plate e1 facing the guide grooves e2a. If the adjusting screw e11 is loosened and removed from one of the screw holes of the stopper plate e1, the adjusting plate e3 may slide with respect to the fixing plate e2, so that the pin e3b and the adjusting screw e11 are guided. turn the adjusting plate e3 according to e2a, and the curved tip x2 of the torch T is angled with respect to the z-axis on the x and z planes in the required forward and backward directions x; At the target angle in the direction x, whereby the target position in the x-direction of the weld wire is determined), the adjusting screw e11 is screwed into the screw hole closest to the end of the screw. The support member f4 is erected on the adjustment plate e3.

7. Torch (T) right and left angle adjustment mechanism (F)

Referring to FIGS. 1, 2 and 3, the supporting member f4, which is erected on the adjusting plate e3, is parallel to the surface of the plate of the adjusting plate e3 and in addition to the arc-shaped guide groove e2a. The torch fitting member f7 is supported by the hinge coupling so as to be rotatable about an axis f4aa orthogonal to the y axis passing through the center of gravity. The tip end of the torch fitting member f7 holds the torch T. The handle f8 locks and releases the torch. By turning the hand f8, the handle f8 can be released and the torch T can be released from the torch fitting member f7. Referring to FIG. 2, the torch fitting member f7 has a round hole f7c penetrating in the y direction, and the round hole f7c and the compression coil spring kf have a handle f1 attached thereto. The sand stick f6 penetrates. The tip of the screw rod f6 is rotatable to the adjustment plate e3, but is engaged with respect to the movement in the y direction. The nut f6a fixed to the torch fitting member f7 is screwed to the screw rod f6. When the knob f1 is turned counterclockwise, the screw rod f6 is rotated counterclockwise to the position shown in FIG. 2, and the torch clamping member f7 compresses the compression coil spring kf. It rotates clockwise in phase (about the axis f4aa shown in FIG. 3), the torch T vibrates in right vibration on the second degree and the curved tip x2 vibrates to the left. When the knob f1 is turned clockwise, the screw rod f6 is rotated clockwise to the position shown in FIG. 2 so that the torch fitting member f7 is the axis f4aa shown in FIG. Counterclockwise, the compression coil spring kf is slightly stretched, the torch T vibrates leftward on the second degree and the curved tip x2 vibrates to the right.

Thus, by turning the handle f1, the angle of entry of the torch T in the left and right direction y (y, the angle with respect to the z axis on the z plane: the target angle in the left and right direction y; thus welding wires) In the y-direction of the target position).

8. X direction drive mechanism (B) of copper support

2, the trolley | bogie 100 is equipped with the x direction drive mechanism B of a copper support part. The x direction drive mechanism B is the same mechanism as the y direction adjustment mechanism A of the torch T, supports the spline shaft b3, and determines its y position. The cylindrical support member b4 is fixed to the spline side b3, and is supported by the support member b4 through the support member b5 and the pressing mechanism G of the copper support portion.

9. Pressing mechanism of copper support (G)

The pressing mechanism G of the copper support part is supported by the supporting member b5 of the copper supporting part x-direction drive mechanism B0. In Fig. 6 (a), the pressing mechanism G seen from the direction of the arrow 8A in Fig. 6 is shown. 6B is a cross-sectional view taken along line 8b-8b of Fig. 6A, and a boss g5 is inserted into the sleeve g1 supported by the supporting member b5, thereby providing a sleeve ( The boss g5 has a spline hole, and a support arm g4 having a spline groove cut into the outer circumferential surface thereof is inserted into the boss g5, and the support arm g4 is a boss g5. Free movement and rotation are prevented in the y direction with respect to the sleeve g1, and a projection adjustment sleeve g2 with a handle g3 is screwed in. The support arm g4 is projected with a projection adjustment sleeve g2. The compression coil spring g6 supported by) presses the sleeve g2 in a direction approaching the improvement, and the support arm g4 has a sleeve g2 and a compression coil. Screw rod (g4a) penetrating the spring (g6) is plugged into the screw, and prevents the support arms (g4) in the head portion Tallahassee sleeve (g1) of the screw rod (g4a).

At the tip of the support arm g4, a support block g11 is mounted freely rotatable about a pin g9 extending in the z direction. The support block g11 freely rotates about the pin g12a extending in the y direction, and maintains the copper support part P. As shown in FIG. Therefore, the copper support part P can rotate about the z-axis and the y-axis with respect to the support arm g4. The rotational movement about the z axis allows the copper support part P to be in close contact with the two steel plates WL and WR at the same time, and the rotational motion about the y axis indicates that the copper support part P is the two steel plates WL and WR. The inclination in the x direction of s allows close contact to follow the imbalance.

When the knob g3 is turned clockwise, the adjustment sleeve g2 enters the inside of the sleeve g1, and the support arm g4 is pushed to the left through the compression coil spring g6, and thus the copper support part P Close to the two steel plates WL and WR. When the knob g3 is turned clockwise again, the force for pressing the copper support P to the two steel plates WL and WR becomes stronger. When the knob g3 is turned counterclockwise, the pressing force is weakened. When the knob g3 is turned counterclockwise, the copper support P is spaced apart from the steel plates WL and WR. When there is no steel plate WL or WR in the front, the head g4b of the screw rod g4a even if the knob g3 is turned clockwise to the threaded insertion limit of the adjusting sleeve g2 with respect to the sleeve g1. Does not fall out of the adjusting sleeve g2, so the supporting arm g4 does not fall out of the boss g5. In addition, the length of the threaded rod g4a is the support arm g4 of the compression coil spring g6 when the length of the screw rod g4a is equal to the right end surface of the handle g3 of the right end surface of the head g4b in this embodiment. The force for pressing the copper support portion P to the two steel plates WL and WR is 2 kg in length. By rotating and adjusting the right end surface of the handle g3 to be even with the right end surface g4b of the head g4b of the screw rod g4a, a pressing force of 2 kg is always applied to the copper support P.

10. Copper support (P)

In the surface (surface) which opposes the steel plates WL and WR of the copper block p1, there is a groove extending in the z direction to regulate the surface bead shape. On the rear surface opposite to the surface, there are two hose joints (for water supply and drainage) connected to the cooling water passage p1a in the copper block p1, and one hose joint jwa is shown in FIG. The bead formation groove on the surface of the copper block p1 has an opening p2a through which the shield gas supply pipe p2 communicates. This gas supply pipe p2 is obliquely fixed to the copper block p1. The hose joint jg is attached to the gas supply pipe p2 side, and the shield gas is supplied to the gas supply pipe p2 through this.

According to the embodiment described above, the copper support part P is free to rotate about the z-axis and the y-axis, and the compression coil spring g6 moves the copper support part P normally by the spring force to the two steel plates WL and WR. Since the pressure is applied to the steel plates WL and WR, even if there is a difference in plate thickness or bends or slopes in the z direction, the copper support portion P closely adheres to the steel plates WL and WR to prevent injury. Does not cause Therefore, the molten metal pool is completely surrounded by the copper support and the improvement, and the fusion heat at the improvement cross section angles is uniform.

In addition, even when the thicknesses of the vertical steel plates WL and WR are all different, the torch T is simply y because the angle of rotation of the torch T can be adjusted by the left and right angle adjusting mechanism F in the left and right y directions. The target position adjustment range is wider in the y direction of the welding wire sent out from the curved tip x2 than in the case of the parallel movement adjustment in the direction. That is, the freedom of adjustment of the target position in the y direction is high. When there is a difference in plate thickness in the two steel plates, it is possible to reduce the penetration by reducing the heat affected zone on the side of the vertical steel sheet having a thin plate thickness as compared to the improvement of the vertical steel plate side having a thick plate thickness. As a result, the unidirectional deterioration of the joint strength of the vertical steel sheet having a thin plate thickness can be suppressed, so that the joint strength can be made uniform even as a whole depending on the plate thickness difference. Also, even when the improved shape is different (e.g., L-shaped improvement), the torch vibration angle in the width direction (y) of the vertical steel plate is adjusted so that the heat affected zone (depth of penetration) is placed on the side of the vertical steel plate having the large inclination angle of the improvement. It becomes possible to enlarge and add more. As a result, the durability of the entire joint is improved.

Claims (7)

Rail member; Rail fixing means for fixing the rail member to a plane of a steel plate having an improvement standing vertically and extending in a vertical direction; A trolley including an electric motor for driving configuration, which is fixed to the rail member and frequently moves along the rail member in a direction in which it extends; Upright welding torch; A torch support mechanism supported by the bogie for supporting the torch; Copper support; And the support portion supported mechanism for supporting the copper support portion, wherein the support portion support mechanism has an axis parallel to the direction (z) in which the copper support portion extends in an extension direction (g9). And freely supported in the direction z, perpendicular to the axis g12a parallel to the plane of the steel plate, and freely moving forward and backward in the direction x perpendicular to the two axes g9 and g12a. An upright electro-gas welding apparatus characterized by pressing in a direction approaching the steel sheet. 2. The rotational motion of claim 1, wherein the support portion and the support mechanism are rotated about an axis g9 parallel to the direction z in which the improvement extends and an axis g12a perpendicular to the direction z and parallel to the plane of the copper plate. Sliders g4, g4a, g4b, which freely support the copper support, and the sliders g4, g4a, g4b are moved freely and in the direction x perpendicular to the two axes g9, g12a. , g4a and g4b, the guide sleeves g1 and g5 prevent rotation about the axis extending in the x direction, and the pressing member g2 screwed to an end opposite to the end of the copper support of the guide sleeves g1 and g5. and g3), and a compression coil spring g6, one end of which is in contact with the guide sleeves g1 and g5, the other end of which is supported by the pressure members g2 and g3, and presses the slider g4 in a direction approaching the steel sheet. Upright electro-gas welding apparatus comprising a). The slider g4, g4a, g4b passes through the compression coil spring g6 and the pressing members g2, g3 in the x direction, and is provided with pressing members g2, g3 in a direction closer to the steel sheet. And a stopper g4b for preventing the end of the tip from being removed, and the length of the sliders g4, g4a and g4b is such that when the tip is flush with the ends of the pressing members g2 and g3, An upright electro-gas welding apparatus, characterized in that the length is applied to the support portion. 2. The torch support mechanism according to claim 1, wherein if the direction in which the improvement extends is z in a direction perpendicular to z and perpendicular to the plane of the steel plate, the torch support mechanism is parallel to the x, z plane and at an angle with respect to x, z ( and transverse rotation support mechanisms (e3, f4, f7) for supporting the welding torch freely rotating around the f4aa) and the transverse rotation angle adjusting mechanisms (kf, f6) for defining the angle of the transverse rotation. Upright electro gas welding apparatus. The second frame (5) according to claim 4, wherein the horizontal rotation angle adjusting mechanism (kf, f6) supports a welding torch freely rotatably supported about the axis (f4aa) with the first frame (e30). f7) is fixed to a spring member kf for driving in the rotational movement direction, a screw member f6 for preventing movement of the second frame f7 relative to the spring member kf, and a screw member f6 Upright electro-gas welding apparatus comprising a handle (f1). 5. The forward and backward rotation support base station (e2, e2a) according to claim 4, wherein the torch support mechanism freely supports the transverse rotation support mechanisms e3, f4, and f70 about an axis parallel to the y axis orthogonal to x and z. and e5, e1) and an up-and-down rotary motion angle adjusting mechanism (e11, e3, e2, e1) for determining the angle of the forward and backward rotation motion thereof. 7. The torch support mechanism according to claim 6, further comprising: a torch support mechanism (A) including a first arm (a11) mounted on a trolley and movable in the y direction; A second torch support mechanism C supported by the first arm a11 and including a second arm c8 movable in the x direction; And third arms d21a and d21b supported by the second arm c8 and supporting the forward and backward rotation support mechanisms e2, e3a, e5 and e1 and extending in the x direction, and supporting the third arms d21a and d21b. Upright electro-gas welding apparatus comprising a; an electric mechanism (D) comprising an electric motor for vibration driving vibrating in the direction in which it extends.