JPH0857690A - Welding jig device for core diaphragm and the like - Google Patents

Abstract

PURPOSE: To make it possible to execute continuous flat welding by aligning the axial centers of cores and diaphragms varying in outside shapes and sizes and supporting these cores and diaphragms by simple operations. CONSTITUTION: This welding jig for the cores and the diaphragms consists of a base plate F, a pair of supporting means 17, 19 which are disposed at this bed plate and hold the horizontally arranged cores and the diaphragms therebetween, pressing mechanisms for pressing the cores and the diaphragms by moving these supporting means and a rotational driving mechanisms which are disposed at the supporting means and rotate the cores and the diaphragms. The base plate described above is provided with a core and diaphragm centering means 50 in a direction orthogonal with the supporting means. This core and diaphragm centering means 5 has a pair of supporting members 67, 69 which are mounted freely attachably and detachably equidistantly to and from each other from a horizontal direction and are capable of adjusting the horizontal positions so as to align the axial centers of the cores and the diaphragms and a center of rotation of the supporting means and horizontal supporting member 71, 73 which are disposed at these supporting members and capable of adjusting the axial centers in perpendicular positions.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding jig device for a core / diaphragm, etc., and more particularly, to a temporarily welded core / diaphragm supported at its axial center position so that the entire circumference is continuously maintained in a stable posture. The present invention relates to a welding jig device capable of welding.

[0002]

2. Description of the Related Art Conventionally, there has been provided a core diaphragm (also called a center column) for construction in which a square rectangular tube is cut into a short dice shape and a diaphragm is welded to both ends thereof. The core diaphragm has an important function as a joint member that extends columns and columns and connects columns and beams, and the manufacturing work involves the dice (core) and the diaphragm that is welded to both end faces of the dice (core). Temporarily weld it with the backing metal and then fix it by welding.

For the production, for example, a welding method as shown in FIG. 8 is adopted. This welding method is the most primitive one, in which a plurality of temporarily welded core diaphragms (four in the figure) are placed in parallel on the surface plate 1, and first the first core diaphragm is welded by the welding operator. Core 5 located in front
The upper surface (one surface) is held by the welding rod 7 in the hand, and the joint surface between the core 5 and the diaphragm 3 is manually welded by the downward arc welding method.

Subsequently, the same work is sequentially performed on the second to fourth core diaphragms. During this time, the first core
When the diaphragm has cooled, it is rotated 90 degrees on the surface plate 1 and the "2nd side" of the core 5 is placed in front of the welding operator. The second to fourth core diaphragms are similarly rotated. Then, after the work of the fourth core diaphragm, the "2nd surface" of the first core diaphragm is again arc-welded downward. Hereinafter, this work is repeated to weld the entire circumference of the core diaphragm.

Further, as shown in FIG. 10, one end of the core 5 is held by the chuck 103 of the swivel chuck device 101, and the chuck 103 is rotated in accordance with the welding speed, so that the temporarily welded upper surface of the diaphragm 3 and the core 5. There is one in which the edge is automatically welded by the welding rod 7 of the welding robot 105.

[0006]

The conventional welding method shown in FIG. 8 has the following problems. When each surface of the core 5 is welded, the welding work is temporarily interrupted at the corners, the orientation of the core 5 is changed, and the welding of the four surfaces is repeated. Therefore, as shown in FIG. 9, the welding beat B is not formed on the corner A, and even if it is formed, it is incomplete, which not only lowers the welding strength but also increases the welding distortion. . Moreover, the work of rotating the core diaphragm, which is a heavy object, is troublesome and requires a lot of labor, and the time and effort required for production are unnecessarily high.

In addition, in the automatic welding apparatus 100 by the welding robot 105, not only is this automatic welding apparatus 100 expensive, but it is necessary to change the welding program in accordance with the change in the size and outer shape of the core / diaphragm CD. The installation area is wide, so it is difficult to introduce it for small capital enterprises such as small and medium-sized enterprises, use in a small factory premises, or welding work involving manual production of small amounts of various products.

The present invention has been made on the basis of the above problems, and enables the centering of the axes of cores and diaphragms having different outer shapes and dimensions to be performed quickly and accurately by a simple operation, and manual welding by an operator. In core / diaphragm welding work, the temporary welded core / diaphragm, etc. is supported at its axial center position, and downward continuous welding can be performed easily and reliably in a stable posture when swiveling every 90 degrees. It is an object of the present invention to provide a welding jig device for a core / diaphragm, etc.

[0009]

In order to achieve the above object, the invention according to claim 1 comprises a base and a pair of support means for sandwiching a horizontally arranged core / diaphragm or the like provided on the base from both sides. A pressing mechanism provided on the base for moving the supporting means to press the core / diaphragm, and a rotation driving mechanism provided on the supporting means for rotating the core / diaphragm by a predetermined angle. Naru core
In a welding jig device for a diaphragm or the like, a core / diaphragm centering means is provided on the base in a direction orthogonal to the supporting means, and the core / diaphragm centering means can move toward and away from each other at an equal distance from the horizontal direction. A pair of support members which are attached and whose horizontal position can be adjusted so that the axis of the core / diaphragm or the like coincides with the turning center of the support means, and the axis of the core / diaphragm or the like provided on the support member is supported by the support member. And a horizontal support member whose position can be adjusted in the vertical direction so as to coincide with the turning center of the means.

According to a second aspect of the invention, the base is
It is characterized in that a turntable which can freely rotate and tilt is arranged on a base. The invention according to claim 3 is characterized in that the upper surface of the horizontal support member is a free bearing.

[0011]

According to the first aspect of the present invention, first, the vertical position of the horizontal support member provided on the support member is adjusted according to the size of the core diaphragm to be welded, and the core diaphragm is adjusted. And the like are placed on this so that the axis thereof coincides with the turning center of the supporting means.
Next, place the core diaphragm on the pair of support members,
The supporting members mounted so as to approach and separate from each other at equal distances from each other in the horizontal direction are brought close to each other and brought into contact with the core diaphragm, so that the axis of the core diaphragm and the like coincide with the turning center of the supporting means. As a result, the center of rotation of the support means and the axis of the core diaphragm coincide with each other. Next, the pressing mechanism is actuated to sandwich the temporarily welded core diaphragm from both sides by the pair of supporting means on the base.

After this centering and sandwiching, the supporting member is retracted and separated from the core diaphragm, and the welding operation is started. The core / diaphragm on the support means is swung by 90 degrees by a rotary drive mechanism, so that the welding rod is advanced downward, and when it reaches a corner, the core / diaphragm is slowly moved to 90 ° by a foot switch or the like. The welding work on the next surface is continuously continued while turning the body once.

According to this core / diaphragm welding jig device, however, the core / diaphragm having different outer shapes and dimensions can be quickly and accurately centered with a simple operation, and the core is supported by the supporting means.・ By accurately supporting the shaft center of the diaphragm, it is possible to perform highly accurate welding in a stable posture, and since the entire circumference of the core and diaphragm is continuously welded downward, the welding beat is discontinuous. Welding defects due to can be completely eliminated.

According to the second aspect of the present invention, since the base has the turntable which can be swung and tilted on the base, first, the turntable which is rotatably supported on the base is mounted. The core diaphragm in the temporarily welded state is sandwiched by the pair of supporting means from both sides. Then, the turntable is adjusted to an inclination angle that facilitates welding work. As a result, the worker can perform a welding operation based on a comfortable posture, which is easy to perform and enables accurate welding. Also, when the welding work on one end of the core diaphragm is completed, the turntable is turned 180 degrees and the turntable is adjusted to the opposite inclination angle so that the other end of the core diaphragm is supported. Part welding work can be performed, improving workability.

According to the third aspect of the present invention, since the upper surface of the horizontal support member is a free bearing, the core diaphragm is placed on the pair of support members, and the core and diaphragm are mounted equidistantly toward and away from each other in the horizontal direction. The core diaphragm, which is a heavy object, can be easily moved when the supported support member is brought close to the core diaphragm, and when the support member is retracted and separated from the core diaphragm after centering and pinching. The workability is improved.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be specifically described below with reference to FIGS. First, the welding jig device 200 is
It is provided on the base F. That is, the turntable 13 placed on the base 11 is tilted to an arbitrary inclination angle θ by a manual operation or the like, and is turned around the turntable 13 by a manual operation or the like. The structure of the base F is not limited to the above, and may be one that does not tilt or turn.

On the turntable 13, a pair of supporting means 17 for sandwiching a horizontally arranged core diaphragm CD (diaphragm 3 is temporarily welded to both end faces of the dice 5 with backing metal) from both sides, 19, a rotary drive mechanism 21 (motor M shown in FIGS. 3 and 4) for rotating the core diaphragm CD at a predetermined angle is provided on one side 17 of the supporting means, and the supporting means 19 on the other side is provided. A pressing mechanism 31 (the air cylinder C shown in FIGS. 2 and 4) for pressing the core diaphragm CD by operating the opening / closing valve V is provided, and the core diaphragm CD is sandwiched by the supporting means 17 and 19.

That is, a pair of supporting means 17 and 19 are arranged to face each other in the horizontal direction, and a core / diaphragm CD which is laterally oriented as shown in FIG. 1 is provided between the turning center O and the axis of the pair of supporting means 17 and 19. Match the cores and pinch them. If it is clamped at a position deviated from the turning center O, the core diaphragm CD will eccentrically rotate during turning welding with a large core diaphragm CD attached, making downward welding work extremely difficult. The supporting means 1 is made to collide with the turntable 13 or by an eccentric load
There is a possibility that troubles such as falling off from 7 and 19 may occur. Therefore, the core / diaphragm centering means 50 is provided on the base F, whereby the support means 17,
The shafts of 19 are made to coincide with each other and sandwiched.

The structure of the base F of the welding jig device 200 will be described with reference to FIGS. 2 to 5.
First, the turntable 13 has its both-side frames 13A and 13B supported by bearing members 23 and 25 at both left and right ends on a substrate 22 mounted on a turning member 30 (bearings not shown) provided on the base 11. The bearing member 23 on one side also serves as the worm speed reducer 23A and the like. Therefore, by manually operating the handle 27 of the worm speed reducer 23A, the turntable 13 can be tilted at an arbitrary inclination angle θ, and the turntable 13 can be rotated by the turning member 3.
At 0, turn manually.

Next, the pair of supporting means 17 and 19 on the turntable 13 will be described. The supporting means 17 provided with a rotation driving mechanism 21 (motor M shown in FIGS. 2 and 4) for rotating the core diaphragm CD by a predetermined angle.
Is a hollow column 3 that is upright on one side of the turntable 13.
It is rotatably supported on the top of 2 in a horizontal position. In this structure, a disk 35 with a support claw 34 is provided on the inner end of the support shaft 33, and a sprocket 37 is fitted to the middle side of the support shaft 33. The sprocket 37 is a rotary drive mechanism 21 in which a sprocket 39 of the motor M with a reducer in the turntable 13 is connected to the sprocket 37 via a chain 40. Therefore, the speed reducer-equipped motor M of the rotary drive mechanism 21 is
When the foot switch FS is operated, the controller CB is started in the normal rotation or the reverse rotation, and when the disc 35 of the supporting means 17 is rotated by 90 degrees, the motor with reduction gear M is stopped by the detection of a limit switch or the like although not shown. Is configured.

The other supporting means 19 is the turntable 1
3 is rotatably supported in a horizontal posture on the top of a column 41 standing upright on the opposite side. The structure is such that a disk 43 with a support claw 42 is provided at the inner end of the support shaft, and the column 41 is provided on both side frames 13 of the turntable 13.
It stands upright on a moving body 47 that engages with the guide bars 45, 45 attached inside the A, 13B. The moving body 47 is connected to the rod 49 of the air cylinder C attached to the inner wall surface of the hollow support column 32 or the like, and the core / diaphragm C is formed.
A pressing mechanism 31 for pressing D is configured. Therefore,
By operating the on-off valve V, the rod 49 of the air cylinder C is moved back and forth in the direction of the arrow, and the supporting means 19 connected thereto moves to and from the facing supporting means 17, thereby supporting the diaphragm 3 of the core diaphragm CD. It is configured to be sandwiched in the state of being grasped by 34 and 42.

Next, the core / diaphragm centering means 5
0 will be described with reference to FIGS. First, the guide rails 51 and 53 are laid on the both side frames 13A and 13B of the turntable 13, and the laid position occupies an approximately half section near the fixed side supporting means 17.
A moving body 55 is engaged on the guide rails 51 and 53, and is framed by two guide bars 59 and 59. When pushed by hand, the guide rails 51 and 53 extend in the longitudinal direction (of the supporting means 17 and 19). Direction). Further, on the two guide bars 59, sliders 61, 63 arranged at the left and right positions and support members 67, 69 upright on the sliders 61, 63.
Is supported and is respectively screwed to the right screw portion 65A and the left screw portion 65B of the feed screw rod 65 arranged in parallel with the two guide bars 59. Therefore, the handle 6 of the feed screw rod 65
When 5C is rotated in the normal and reverse directions, the support members 67 arranged in the left and right positions,
69 moves to and from each other, and the intermediate point P is always located above and below the axis O on the line connecting the supporting means 17 and 19.

Horizontal support members 71 and 73 are provided on the inner sides of the pair of support members 67 and 69 facing each other. That is, the support members 67 and 69 are provided with engaging holes 68, 68, ...
The bolt insertion holes 70, 70 ... Are bored, while the horizontal support members 71, 73 are provided with engagement rods (knock pins) 72 that are inserted into any of the engagement holes 68. A female screw portion 75 is formed, and bolts 77 fasten and fix the horizontal support members 71 and 73 to the support members 67 and 69. The above-mentioned interval Z is a standardized column (core) 5
It is determined by the diameter of the pipe 80, and as shown in FIG. 6, it can be applied to the column (core) 5 having the smallest size to the pipe 80 having the largest size.

A free bearing 79 for supporting the core diaphragm CD placed on the top end sides of the horizontal supporting members 71, 73 and for facilitating their movement and turning.
Equipped with several. The core / diaphragm CD is mounted on the horizontal support members 71, 73 installed at predetermined positions so that the axis O of the core / diaphragm CD coincides with the turning center of the support means 17, 19. As the horizontal support members 71 and 73, a plurality of pieces connected so that their lengths can be adjusted may be used, or a plurality of pieces having different lengths may be prepared in advance and used.

The welding jig device 200 of the present invention is constructed as described above and operates as follows. First, FIGS. 7 to 1
As shown in 0, a core comprising the pair of support members 67, 69 and horizontal support members 71, 73 attached thereto.
When the core / diaphragm 5 and the pipe 80 to be welded are placed on the diaphragm centering means 50 and the handle 65C is rotated in the forward / reverse direction and sandwiched by the support members 67 and 69 from both sides, the left / right position is determined as the intermediate point P thereof. The upper and lower positions are horizontal support member plates 71, 7 with one of the engagement holes 70, 70 ...
By adjusting the height of 3, the core / diaphragm CD and the axial center O of the pipe 80 are aligned with the axial center on the line connecting the supporting means 17 and 19.

The core diaphragm CD and the pipe 80 centered on the axis O on the line connecting the supporting means 17 and 19 by the core / diaphragm centering means 50 include a pair of supporting means 17 and 19 (each circle). It is sandwiched between the plates 35, 43). To mount the temporarily welded core diaphragm CD between the pair of supporting means 17 and 19, the supporting means 19 is opened and closed by operating the on-off valve V to move the rod 49 of the air cylinder C in the direction of the solid line arrow. By operating the valve V, the rod 49 of the air cylinder C is moved in the direction of the broken line arrow, as shown in FIGS.
The core diaphragm CD as shown in FIG.
It is sandwiched between Nos. 7 and 19 (each disc 35 and 43). The length range of the core diaphragm CD mounted between the pair of supporting means 17 and 19 is determined by the stroke of the supporting means 19 and ranges from the minimum dimension Lmin to the maximum dimension Lmax.

Waiting for this clamping, the core / diaphragm centering means 50 is moved to the core / diaphragm CD or pipe 8.
In order to move away from 0, by rotating the handle 65C,
As shown by the chain double-dashed line in FIG. 7, the pair of support plates 67, 69 and the horizontal support plates 71, 73 attached thereto are retracted. At this time, the movement and turning of the horizontal support members 71 and 73 are facilitated by the action of the free bearing 79 provided on the top end side of the upper surfaces. As a result, the core / diaphragm CD centered on the axial center on the line connecting the supporting means 17 and 19 can be turned.

As described above, the pair of supporting means 17, 19
The core diaphragm CD sandwiched between the (discs 35, 43) operates the handle 27 so that the turntable 13 is tilted at a predetermined angle θ and is turned to a predetermined position so as to match the downward welding posture. To do. In this state, an operator sitting in front of the welding jig device 200 holds the welding rod W in his hand as shown in FIG. 1 and advances downward welding in the arrow direction or the opposite direction.

Then, as described above, when the corner of the core 5 is approached, the foot switch FS is stepped on and the controller CB activates the motor M, and the supporting means 17 and 19 are rotated by 90 degrees (quarter rotation). Only while continuing the welding, the core diaphragm CD is turned counterclockwise (or the opposite direction) and stopped. With this, the welding point is changed to the next surface, and again, as shown in FIG. 1, the upper edge of the core diaphragm CD is welded downward by moving the welding rod W in the arrow direction. Hereinafter, continuous downward welding is performed on the four surfaces of the core / diaphragm CD, and thereafter, the turntable 13 is turned 180 degrees by manual operation or the like, and its inclination angle θ is turned in the opposite direction. The upper surface edge on the opposite side of the core diaphragm CD is set to the state shown in FIG. 1, and the downward continuous welding is performed in the same manner as above.

According to this embodiment, the following effects can be obtained. First, the core / diaphragm centering means 50 can accurately center the core / diaphragm CD and the pipe 80 having different outer shapes and dimensions by a simple operation.
Positioning can be performed with high accuracy. Also, with accurate centering,
Since the core / diaphragm CD can be accurately turned and the entire circumference thereof can be continuously welded downward, the welding defect due to the discontinuity of the welding beat B can be completely eliminated.

Further, since the base F has the turntable 13 which can be swung and tilted on the base 11, the core diaphragm can be tilted at an arbitrary angle, so that the worker can perform the welding work. Can be used as a basis for easy workability. Also, when the welding work on one end of the core diaphragm is completed, the turntable is turned 180 degrees and the turntable is adjusted to the opposite inclination angle so that the other end of the core diaphragm is supported. Part welding work can be performed, improving workability.

Since the upper surfaces of the horizontal support members 71 and 73 are free bearings 79, the support members and the horizontal support members can be easily retracted after the core / diaphragm is placed and the centering work is performed, and the workability is improved. To do.

The present invention is not limited to the above embodiments, and design changes can be made within the scope of the invention. For example, with respect to the sandwiching of the core diaphragm by the supporting means 17 and 19, one is fixed and the other is moved, but both may be moved. Also, the horizontal support member 7
As means for adjusting the position of 1, 73 in the vertical direction, besides the means for positioning by means of the engagement hole and the engagement rod and fixing by means of bolts, it is also possible to move to a desired position by means of a feed screw mechanism.

As the pressing mechanism 31, a feed screw mechanism or the like may be used instead of the cylinder mechanism. Further, the rotation drive mechanism 21 of the supporting means 17 and 19 may have a structure in which a motor is directly connected to the support shaft. The configurations of the tilting mechanism, the turning mechanism, the controller CB, etc. of the turntable 13 are not limited to those shown in the drawings. Further, the work is not limited to the core / diaphragm CD, and various shapes such as the pipe 80 and the polygon can be applied.

[0035]

As described in detail above, according to the first aspect of the invention, since the entire circumference of the core / diaphragm and the like is continuously downwardly welded, the welding defect due to the discontinuity of the welding beat is completely eliminated. It has the effect of enabling high-precision welding. Further, since the core / diaphragm centering means is provided, there is an effect that axial centering of the core / diaphragm having different outer shapes and sizes can be performed quickly and highly accurately by a simple operation.

According to the second aspect of the present invention, since the core diaphragm can be tilted at an arbitrary angle to perform the work, the worker can perform the welding work in a comfortable posture and the workability is good. or,
When the welding work on one end of the core diaphragm is completed, the turntable is turned 180 degrees and the turntable is adjusted to the opposite inclination angle so that the other end of the core diaphragm is supported. Welding work can be performed and workability is improved.

Further, according to the invention of claim 3, since the upper surface of the horizontal support member is a free bearing, the support member and the horizontal support member can be easily retracted after the core / diaphragm is placed and centered. It has the effect of improving workability.

[Brief description of drawings]

FIG. 1 is a view showing an embodiment of the present invention and is a perspective view of a welding jig device.

FIG. 2 is a view showing an embodiment of the present invention and is a plan view of a welding jig device.

3 is a diagram showing an embodiment of the present invention and is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a view showing an embodiment of the present invention and is a sectional view taken along line BB in FIG.

FIG. 5 is a view showing an embodiment of the present invention and is a plan view of a welding jig device.

FIG. 6 is a view showing an embodiment of the present invention and is a sectional view of a welding jig device.

FIG. 7 is a view showing an embodiment of the present invention and is a sectional view of a welding jig device.

FIG. 8 is a diagram showing manual welding in a conventional example, and is a front view of a welding procedure.

FIG. 9 is a perspective view of a core diaphragm by a welding method of a conventional example.

FIG. 10 is a diagram showing a conventional example of automatic welding, and is a perspective view of a welding robot.

[Explanation of symbols]

 3 Diaphragm 5 Core (Column) F Base 11 Base 13 Turntable 17,19 Supporting Means 17A, 19A Convex 21 Rotation Drive Mechanism 31 Pressing Mechanism 30 Revolving Member 50 Core / diaphragm Centering Means 67,69 Supporting Members 71,73 Horizontal support member θ Inclination angle C Air cylinder CB Controller C1, C2 Center hole O Swing center CD Core / diaphragm FS Foot switch M Reducer motor V Open / close valve Z Interval 200 Welding jig device

Claims (3)

[Claims] 1. A base, a pair of support means provided on the base for sandwiching a horizontally arranged core / diaphragm or the like from both sides, and a core / diaphragm or the like provided on the base to move the support means. In a welding jig device for a core / diaphragm and the like, a pressing mechanism for pressing the core and a rotary drive mechanism for rotating the core / diaphragm and the like by a predetermined angle provided in the supporting means are supported on the base. A core / diaphragm centering means is provided in a direction orthogonal to the means, and the core / diaphragm centering means are mounted so that they can approach and separate from each other at equal distances from the horizontal direction. A pair of support members whose horizontal position can be adjusted so as to coincide with the center, and a shaft core such as a core or a diaphragm provided on the support member while the support means is rotating. A welding jig device for a core / diaphragm or the like, which is provided with a horizontal support member whose position can be adjusted in the vertical direction so as to match the core. 2. The welding jig device for cores, diaphragms, etc. according to claim 1, wherein the base has a turntable which is rotatable and tiltable on a base. 3. The welding jig device according to claim 1, wherein the upper surface of the horizontal support member is a free bearing.