JP2007098461A - Welding equipment and tool in relation to joint core of steel pole - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide welding equipment and a welding tool which are used in relation to a joint core of a steel pole and which are capable of suitably setting a workpiece 11 of a joint core in a pair of rotary positioners 20, 20 as well as greatly improving the working efficiency of the setting. <P>SOLUTION: The welding equipment comprises: a pair of rotary positioners 20, 20 that are arranged with a required space apart and that hold a columnar member longitudinally at two places to rotate it around the axial center of the columnar member; a welding robot 25 that welds a weld zone of a workpiece held by the pair of rotary positioners 20, 20; and the welding tool 30 that is composed of a columnar body 31 which is held to penetrate both of the pair of rotary positioners 20, 20, and holding ends 32, 32 which are each installed at both ends of the columnar body 31 to hold in cantilever the workpiece 11 of the tack-welded joint core. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a welding apparatus and a welding jig for producing a joint core that is provided by welding plate-like diaphragms at both ends of a short columnar column and serves as a connection portion between a column and a beam of a steel building.

The pillar of a steel structure building is a welded structure in which long pillar materials and joints are connected alternately. In addition to connecting up and down what is assembled to a length that can be transported in the factory at the construction site, the frame of the building is constructed by connecting the beam to the blade provided in the joint.
The long columnar material is provided with a groove or a backing metal at the end of a steel material such as a square pipe, a round pipe, or an H-shaped steel cut to a required length. In addition, the joint is generally produced by welding a small plate (diaphragm) to both ends of a short column (column) having the same cross section as the long column material to produce a core material (joint core). A blade (bracket) is welded to the core.

A welding device using a welding robot is used for the connection between the joint core and the long columnar material and the welding involved in the production of the joint core.
For example, in order to connect the joint core 10 and the long column member 15, a “column large group welding system” as shown in FIG. 16 is used. This system includes a pair of rotary positioners 20 and 20 and a welding robot 25. The pair of rotation positioners 20 and 20 can hold the workpiece 100 horizontally at two locations in the longitudinal direction and appropriately rotate the shaft center. Further, the welding robot 25 can appropriately weld the welded portion of the workpiece 100 that is suitably positioned by the pair of rotary positioners 20 and 20 and directed in a required direction. According to this, the joint core 10 and the long columnar material 15 which are temporarily welded can be set to the pair of rotary positioners 20 and 20 and can be suitably welded. This is the normal method of use of this column large group welding system. In addition, since the structure of the rotation positioner 20 and the welding robot 25 is known, detailed description is abbreviate | omitted.

Further, it is disclosed that the same column large group welding system (welding apparatus) as in FIG. 16 is used in a special method as shown in FIG. 17 in order to manufacture the joint core 10 and the like (see Patent Document 1). .
According to this welding apparatus, the pair of rotary positioners 20 and 20 that hold both ends of the workpiece 101 are provided so as to be able to advance and retract in the longitudinal direction of the workpiece 101. Further, a carriage 26 that moves in a direction parallel to the advancing / retreating direction of the rotary positioner 20 and a welding robot 25 that is mounted on the carriage 26 and welds the workpiece 101 are provided. A restraint adapter 40 is provided between the work 101 and a restraining member (not shown) in each rotary positioner 20 that restrains the restraint object from two directions. For this reason, the workpiece 101 is sandwiched and held from both sides by the pair of constraint adapters 40 and 40. That is, the workpiece 101 is set between the pair of rotation positioners 20 and 20. Each restraint adapter 40 can be easily attached to and detached from each rotation positioner 20. In addition, the workpiece 101 is obtained by connecting, for example, three workpiece core workpieces 11 with a jig 42.
JP 05-318109 A (first page)

The problem to be solved with regard to the welding apparatus and welding jig related to the steel core joint core is that the work efficiency of setting the pair of rotary positioners 20 and 20 to hold the work 11 of the joint core at both ends. It is in the point that cannot be improved.
As shown in FIG. 17, if the workpiece 11 of the joint core is set between the pair of rotary positioners 20 and 20 via the pair of restraint adapters 40 and 40, the workpiece 11 can be stably held. However, since both ends (diaphragms 13 and 13) of the workpiece 11 of the joint core are restrained (fixed) by gripping or the like, the work is complicated. Further, it is necessary to align the work core 11 of the joint core and the pair of constraint adapters 40, 40, and to align the shaft centers of the pair of rotation positioners 20, 20, which makes the setting work complicated. It takes time.
In particular, when the diaphragm has an irregular shape other than a square, there is a problem that the operation is more difficult.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a welding apparatus for a steel column joint core capable of suitably setting a work including a joint core of a deformed diaphragm to a pair of rotary positioners and improving work efficiency of the setting. And providing a welding jig.

The present invention has the following configuration in order to achieve the above object.
According to one embodiment of a welding apparatus for a steel column joint core according to the present invention, plate-like diaphragms are welded to both ends of a short columnar column to provide a connection part between a column and a beam of a steel building. A welding apparatus for producing a joint core, which is arranged at a required interval, and holds a columnar member at two locations in the longitudinal direction and rotates it with reference to the axis of the columnar member. Rotation positioners, a welding robot that welds welded portions of workpieces held by the pair of rotation positioners, a columnar main body that is held in a state of passing through both the pair of rotation positioners, and both ends of the column It is composed of holding end portions respectively provided at both ends of the columnar main body portion in order to hold the work of the joint core, on which the diaphragm is temporarily welded, with one diaphragm being constrained with respect to one diaphragm The diaphragm of the workpiece of the joint core is provided with a through hole, and the joint core at each holding end of the welding jig is fitted inside the through hole. In order to position the workpiece, positioning protrusions are provided at each holding end of the welding jig.
Further, according to one aspect of the welding device relating to the steel core joint core according to the present invention, the diaphragm is provided with a plurality of the through-holes, and the positioning protrusions corresponding to the plurality of through-holes are provided at the holding end. It can be characterized by being provided.

  Moreover, according to one form of the welding apparatus which concerns on the steel core joint core concerning this invention, the said holding | maintenance edge part is a diaphragm of one side of the holding plate which has a planar holding surface, and the said work piece of the joint core. At least two pairs of clamping members are arranged so as to be movable in a radial direction on the holding surface of the holding plate and to be fixed at a required position so as to hold the workpiece of the joint core by clamping the screw from at least two directions. It can be characterized by comprising.

Moreover, according to one form of the welding apparatus which concerns on the joint core of the steel column concerning this invention, the said fastening member is arranged so that a slide is possible along the groove | channel provided in the radial direction in the said holding plate, A portion to be brought into contact with and tightened on the side portion of the tightening member is rotatably provided so that the diaphragm can be abutted and tightened along the inclined side portion of the diaphragm. Can do.
Moreover, according to one form of the welding apparatus which concerns on the joint core of the steel column concerning this invention, the said fastening member is distribute | arranged so that it can slide along the groove | channel provided in the radial direction in the said holding plate, At least One pair can be engaged with each side of a bolt provided on a reverse screw with respect to the other side so that the pair can be expanded and contracted in the radial direction synchronously.

  Moreover, according to one form of the welding apparatus which concerns on the joint core of the steel column concerning this invention, the said columnar main-body part is comprised by two cylindrical members, and one cylindrical member becomes the other cylindrical member. On the other hand, the welding jig can be extended and contracted in the longitudinal direction by fitting in a nested manner.

In addition, according to the welding jig relating to the steel core joint core according to the present invention, the welding jig is provided to be used in the welding apparatus relating to the steel pillar joint core described above.
In addition, according to the welding method for a steel column joint core according to the present invention, plate-like diaphragms are welded to both ends of a short columnar column to provide a connection portion between the column and beam of the steel building. A welding apparatus for manufacturing a mouth core, which is arranged at a predetermined interval, holds a columnar member at two positions in the longitudinal direction, and rotates with reference to the axis of the columnar member A rotary positioner, a welding robot for welding a welded portion of a workpiece held by the pair of rotary positioners, a columnar main body held in a state of passing through both of the pair of rotary positioners, and both ends of the column A fusion core composed of holding ends provided at both ends of the columnar body to hold the work piece of the joint core, on which the diaphragm is temporarily welded, cantilevered by restraining one of the diaphragms. The welding jig is held by the pair of rotary positioners using a welding apparatus for a steel column joint core having a jig for welding. After each of the mouth core workpieces is held, the welding robot welds the welded portion of the mouth core workpiece.

  According to the welding device and the welding jig relating to the steel core joint core of the present invention, the joint core can be suitably set to the pair of rotary positioners, and the working efficiency of the setting can be greatly improved. There is a special remarkable effect.

Hereinafter, an example of the best mode of the welding apparatus according to the joint core of the steel column of the present invention will be described in detail with reference to the accompanying drawings (FIGS. 1 and 2). FIG. 1 is a plan view showing a use state of a welding apparatus according to a steel core joint core of the present invention. FIG. 2 is a side view of the welding apparatus according to the steel core joint core of the present invention.
This welding apparatus is a welding system for manufacturing a joint core 10 which is provided by welding plate-like diaphragms 13 to both ends of a short columnar column 12 and serves as a connection portion between a column and a beam of a steel building.

Reference numeral 20 denotes a rotation positioner, and a pair of them are arranged at a required interval. The pair of rotation positioners 20 and 20 are configured to hold a columnar member at two locations in the longitudinal direction and rotate the columnar member with reference to the axis of the columnar member. Usually, it rotates in a state where the axis of the columnar member and the rotation axis of the pair of rotation positioners 20 and 20 are horizontal and concentric. It should be noted that the two axes can be suitably rotated as long as they are at least parallel.
Each rotation positioner 20 is provided with holding means for holding it in at least two directions so that a columnar member such as a workpiece can be held inside the ring-shaped rotating member 21. This holding means can be constituted by arranging two pairs of clamping members that are tightened in the radial direction as shown in FIG. 2, for example. Another pair of clamping members 22b and 22b are arranged in the radial direction orthogonal to the pair of clamping members 22a and 22a arranged in the radial direction. Each of these clamping members functions so as to be brought into contact with the columnar member in a pressurized state by, for example, screw tightening and hold the columnar member. The rotating member 21 is provided with an openable / closable portion 21a. By opening the opening / closing part 21a, the columnar member can be suitably positioned inside the rotating member 21.

Each rotation positioner 20 is slidable on the rail 23 so as to be movable in the same direction as the longitudinal direction of the held columnar member. That is, it is provided so as to be able to advance and retract in the axial direction of the rotating shaft of the rotating member 21. Thereby, the position and space | interval of this pair of rotation positioners 20 and 20 can be changed suitably.
In addition, since this rotation positioner 20 is well-known as an apparatus which comprises a column large group welding system, description is abbreviate | omitted about a detailed mechanism.

Reference numeral 25 denotes a welding robot, which is configured to weld a workpiece to be welded held by the pair of rotary positioners 20 and 20. A welding torch is provided at the tip of the articulated robot and can be welded to a welded part such as a groove by being appropriately controlled.
The welding robot 25 is slidable on a rail 27 via a carriage 26 so as to be movable in parallel with the moving direction of the pair of rotary positioners 20 and 20 described above. Thereby, a welding position can be changed suitably.
Since this welding robot 25 is well-known as an apparatus constituting a column large group welding system, the detailed mechanism and the like will not be described.

Reference numeral 30 denotes a welding jig, which includes a columnar main body 31 that is held in a state of penetrating both the pair of rotary positioners 20 and 20, and a joint core in which diaphragms 13 and 13 are temporarily welded to both ends of the column 12. The work 11 is composed of holding end portions 32 and 32 respectively provided at both ends of the columnar main body 31 so as to be held in a cantilever manner by restraining the one diaphragm 13.
Since the columnar main body 31 is thus held in a penetrating manner, both end portions of the columnar main body portion 31 protrude to the outside rather than between the pair of rotary positioners 20 and 20. For this reason, the work 11 of the joint core can be suitably held in a cantilever state by the holding end portion 32. Since only one diaphragm 13 is held by being restrained, the workpiece 11 of the joint core can be easily attached to and detached from the welding jig 30. Further, by holding the workpiece 11 of the joint core in this way, the torch of the welding robot 25 can suitably reach the welded portion.
For example, as shown in FIG. 3, the welding jig 30 includes a cylindrical columnar main body portion 31 having a square cross section and a pair of plate-like holding end portions 32 fixed to both ends thereof. , 32.

  Since the welding jig 30 includes holding end portions 32 and 32 at both ends of the columnar main body portion 31, the workpiece 11 of the joint core can be held at both ends, and the load is not biased. For this reason, the welding jig 30 holding the workpiece 11 having the two joint cores can be set to the pair of rotary positioners 20 and 20 with good balance. That is, since it is supported at two points (two locations), the load is dispersed and held. Accordingly, the heavy work piece core 11 can be suitably held by the pair of rotary positioners 20 and 20 and can be rotated or rotated about its axis. Moreover, although the holding | maintenance by the holding | maintenance edge part 32 will be in a cantilever state, since it can set with sufficient balance as mentioned above, it hold | maintains appropriately.

Moreover, the workpieces 11 and 11 of two joint cores can be set to the one welding jig 30, and work efficiency can be improved. That is, if the welding robot 25 moves along the rail 27 and welds in one setting, welding work can be performed on the workpieces 11 and 11 of the two joint cores. Further, two welding robots 25 can be disposed on the rail 27. According to this, work efficiency can be further improved.
Moreover, as shown in FIG.1 and FIG.4, the workpiece | work 11 of a joint core is hold | maintained at the holding | maintenance edge part 32 in the cantilever state. For this reason, setting is easy and work efficiency can be improved.

Next, the example of the form of the holding | maintenance edge part 32 is demonstrated in detail based on FIG.5 and FIG.6. FIG. 5 is a front view of the holding end portion 32 and shows an example of a holding surface for holding the workpiece 11 of the joint core. FIG. 6 is a rear view of the holding end portion 32, which is an example of a holding mechanism.
The holding end portion 32 is to hold the workpiece 11 of the splicing core by tightening the holding plate 33 having a flat holding surface 33a and one diaphragm 13 of the splicing core workpiece 11 from at least two directions. And at least two pairs of fastening members (35a to 35d) arranged so as to be movable in a radial direction on the holding surface 33a of the holding plate 33 and to be fixed at a required position. In this embodiment, four pairs of fastening members (35a to 35d) are arranged.

Each fastening member (35a to 35d) is slidably disposed on the holding plate 33 along a groove 34 provided in the radial direction from the center of the holding surface 33a.
A pair of tightening members 35a, 35a are respectively screwed to the respective sides of a bolt 36 provided with a reverse screw with respect to the other side in order to move in a radially expanding and contracting manner. That is, the bolt 36 is a rod-like male screw provided with a reverse screw at the center, and when turned to one side, the pair of tightening members 35a and 35a are separated from the center of the holding surface 33a and are opposite to each other. It is provided to be close to each other when turned.
The pair of tightening members 35 a and 35 a are arranged in the diagonal direction of the square holding plate 33. Since the pair of tightening members 35a and 35a can be expanded and contracted synchronously, the diaphragm 13 can be suitably chucked to center the workpiece 11 of the joint core. Thereby, the axial center of the workpiece 11 of the joint core, the rotational axis of the rotary positioner 20 and the axial center of the welding jig 30 can be aligned and can be suitably welded by the welding robot 25.
Another pair of fastening members 35b and 35b are arranged in a direction orthogonal to the diagonal direction of the pair of fastening members 35a and 35a. A square diaphragm (ordinary diaphragm) 13 as shown in FIG. 7 is fastened in two directions by the two pairs of fastening members 35a, 35a, 35b, and 35b to hold the work 11 of the joint core. That is, by fixing the four corners of the normal diaphragm 13, the workpiece 11 of the joint core is mounted on the holding surface 33 a. 7A is a plan view of the work 11 of the joint core, and FIG. 7B is a side view. Reference numeral 12 denotes a rectangular column.

Further, the other two pairs of tightening members 35c, 35c, 35d, and 35d hold the workpiece 11a of the joint core by tightening the deformed diaphragm 13a as shown in FIG. 8 from two directions. (FIG. 8 (a) is a plan view of the work 11a of the splicing core, FIG. 8 (b) is a side view. 12a is a round cylindrical column.) A pair of fastening members 35c, 35c Another pair of fastening members 35d and 35d are provided that can be moved in the radial direction and can be fixed at a required position, and can be moved in a direction perpendicular to the radial direction and can be fixed at a required position.
According to the two pairs of tightening members 35c, 35c, 35d, and 35d, they can be held corresponding to the workpieces of the various types of joint cores, and versatility is improved.

Next, based on FIGS. 9 to 14, the holding end of the welding jig according to the present invention that can position and hold the work of the joint core corresponding to the work of the joint core provided with the deformed diaphragm. A form example will be described. 9 is a side sectional view showing the holding end portion 32a holding the deformed diaphragm 13b (the workpiece 11b of the joint core), and FIG. 10 is a front view of the holding end portion 32a holding the deformed diaphragm 13b (column). 12b is shown in cross section). In addition, about the structure demonstrated above, the same code | symbol is attached | subjected and description is abbreviate | omitted.
Reference numeral 50 denotes a through hole, which is provided on the diaphragm 13b of the workpiece 11b of the joint core. The through hole 50 is provided so as to communicate the internal space formed by the column 12b and the pair of diaphragms 13b with the outside. In addition, 14 is a backing money.
Reference numeral 55 denotes a positioning projection, and each holding of the welding jig 30a is performed so as to position the workpiece 11b of the joint core at each holding end 32a of the welding jig 30a by being fitted inside the through hole 50. It is provided at the end 32a. In addition, the shape of the through-hole 50 and the positioning projection 55 is not particularly limited, and may be a shape that fits for positioning.

A plurality of through holes 50 are provided in the diaphragm 13b, and a plurality of positioning projections 55 corresponding to the through holes 50 are provided in the holding end portion 32a. These numbers are not limited, but two are provided in this embodiment. By providing at least two, even the circular through hole 50 and the round bar-shaped positioning projection 55 are restricted in rotation and positioned appropriately.
Thus, by providing the through hole 50 and the positioning projection 55, it is possible to easily center the workpiece by aligning the axis of the workpiece 11b of the joint core with the axis of the welding jig 30a. .
A specific form of the positioning protrusion 55 can be a structure in which a round bar-shaped positioning protrusion 55 is inserted into the circular through hole 50 as shown in FIG. According to this, the positioning projection 55 is formed in a bolt shape and is fixed to the disk part 56, and the disk part 56 is fixed to the holding plate 33 by the plurality of screws 57.
By the way, for the joint core 10, a through hole 50 as a gas vent hole is necessary, and in the present invention, the through hole 50 can be suitably used as a positioning hole. Without this through-hole 50, the internal air of the splicing core 10 may expand due to the heat of welding and be ejected during welding. For this reason, it is generally necessary to provide the through hole 50, but conventionally, the positioning (centering) means is not configured as in the present invention.

Next, the details of the two pairs of tightening members 35c, 35c, 35d, and 35d described above will be described with reference to FIGS. FIG. 11 is a front view of one fastening member. 12 is a cross-sectional view taken along line AA in FIG. 11, and FIG. 13 is a cross-sectional view taken along line BB in FIG. Moreover, it is a front view which shows the state which the part of the clamping member of FIG. 11 rotated.
The fastening members 35c, 35c, 35d, and 35d are slidably disposed along slit-like grooves 34 (diagonal grooves are not shown) provided in the holding plate 33 in the radial direction.
Then, it is tightened in contact with the side portion 13z of the deformation diaphragm 13b of the tightening members 35c, 35c, 35d, and 35d so that it can be tightened by contacting along the inclined side portion 13z of the deformation diaphragm 13b. The part is provided to be rotatable.

Reference numeral 60 denotes a rotary clamp portion, which is a portion to be tightened in contact with the side portion 13z. As shown in FIG. 12, the rotary clamp portion 60 includes a crank pawl 61, a work receiving portion 62, a fastening bolt 63, and a coil spring 64, and is connected to the slide base portion 66 via a rotation allowable shaft 65. It is mounted so that it can rotate.
As shown in FIG. 13, the slide base portion 66 is slidable along the groove 34, and a lower step portion 66 a is fitted in the groove 34. The slide base portion 66 can be fixed on the holding plate 33 by sandwiching the holding plate 33 with a fixing back plate 68 with fixing bolts 67.
The rotation allowable shaft 65 is a shaft portion that prevents the work receiving portion 62 and the slide base portion 66 from separating and holds the work receiving portion 62 on the slide base portion 66 so that the work receiving portion 62 can rotate. In addition, about this rotation permissible axis | shaft 65, you may provide the ratchet mechanism which can produce a required rotational resistance so that rotation can be stopped, whenever it rotates a predetermined small angle. According to this, the rotation clamp part 60 can be hold | maintained at a required angle, and the workability | operativity concerning mounting | wearing of the workpiece | work 11b of a joint core can be improved.

Further, the work receiving portion 62 is provided with a stepped portion 62a, and the stepped portion 62a abuts along the inclined side portion 13z of the diaphragm 13b, so that the rotary clamp portion 60 favors the diaphragm 13b as a whole. Can be clamped. That is, the diaphragm 13b can be suitably sandwiched and held by the pair of rotary clamp portions 60 (tightening members 35c and 35d). In addition, when one of the pair of opposing rotary clamps 60 is fixed, it is tightened from one direction. Therefore, according to the two pairs of rotating clamp parts 60, it may be tightened from at least two directions. Thereby, even if the workpiece 11b of the joint core is rotated with respect to the axis, it can be suitably held so as not to fall off.
Further, the clamp claw 61 of this embodiment has a structure in which the diaphragm 13b is clamped and clamped by the four clamping bolts 63. In addition, if it clamps from the clamp | tightening bolt 63 of the rear end side of the clamp nail | claw 61, the clamp nail | claw 61 can be suitably clamped by making surface contact with the side part 13z of the diaphragm 13b.
In addition, four coil springs 64 are arranged between the clamp claws 61 and the work receiving portion 62 so as to be fitted on the fastening bolts 63. Thereby, the space | interval which the side part 13z of the diaphragm 13b enters can be maintained, and the workability | operativity concerning mounting | wearing of the work of a joint core can be improved.

Next, another embodiment of the welding jig will be described with reference to FIG.
According to this welding jig 300, the columnar main body 310 is constituted by two cylindrical members 311 and 312, and one cylindrical member 311 is fitted in a nested manner with respect to the other cylindrical member 312. Yes. Thereby, the welding jig 300 can expand and contract in the longitudinal direction. Reference numeral 313 denotes fastening means, which is constituted by, for example, a bolt, and fastens one cylindrical member 311 and the other cylindrical member 312 fitted thereto.

According to this, the welding jig 300 having a required length to be held by the pair of rotary positioners 20 and 20 can be suitably obtained. Further, when not used, the two cylindrical members 311 and 312 can be shortened by fitting them so as to largely overlap each other. According to this, the welding jig 300 can be suitably stored in a narrow space.
In addition, about the holding | maintenance edge part 320, the thing (holding edge part 32) of the form mentioned above can be used suitably.

Next, the usage method of the welding apparatus which concerns on the joint core of this invention is demonstrated based on FIG.1 and FIG.2.
First, the welding jig 30 is held by the pair of rotary positioners 20 and 20 in the same manner as in the case of column large group welding. And the workpiece | work 11 of the joint core temporarily welded through the backing metal is hold | maintained at the both ends of the welding jig 30, respectively. In this embodiment, the work 11 of the joint core is held in a cantilever manner by the holding end 32 described above.
Next, the welding jig 30 is appropriately rotated by the pair of rotary positioners 20 and 20 in the same manner as in the case of column large group welding. As a result, the welded portion that is suitably positioned and oriented in the required direction is circumferentially welded by the welding robot 25. The welding robot 25 moves appropriately along the rail 27 and performs a welding operation on the workpieces 11 of the two joint cores.

According to this welding method, since the work 11 of the joint core can be suitably held, high-quality welding without welding defects can be performed.
Further, according to this method, the column large group welding system can be suitably used for manufacturing the joint core in almost the same manner as in the case of column large group welding. Therefore, work and management can be easily performed. Thereby, the operation rate of a column large group welding system can be improved suitably. Since it can be preferably automated, work efficiency can be greatly improved.
Further, if two welding jigs 30 according to the present invention are used, one welding jig 30 is set on the pair of rotary positioners 20 and 20 and the welding operation is performed while the other welding jig 30 is set. An operation of holding the workpiece 11 of the splicing core on the tool 30 can also be performed. According to this, work efficiency can be further greatly improved.

  As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

It is a top view which shows one form of the welding apparatus which concerns on the joint core of the steel column of this invention. It is a side view which shows one form of the welding apparatus which concerns on the joint core of the steel column of this invention. It is a top view which shows one form of the jig for welding which concerns on the joint core of the steel column of this invention. It is a top view which shows the state which made the welding jig hold | maintain the workpiece | work of a joint core. It is a front view which shows one form of the holding | maintenance edge part of the jig for welding. It is a rear view which shows one form of the holding | maintenance edge part of the jig for welding. It is the top view and side view which show one workpiece | work of a joint core. It is the top view and side view which show the workpiece | work other form of a joint core. It is a sectional side view which shows the state which has located the deformation | transformation diaphragm in the jig for welding. It is a front view which shows the state which has located the deformation | transformation diaphragm in the welding jig | tool. It is a front view which shows one form of the fastening member of the jig for welding. It is AA sectional drawing of FIG. It is BB sectional drawing of FIG. It is a front view which shows the state which the part of the clamping member of FIG. 11 rotated. It is a top view which shows the other form of the jig for welding. It is a top view which shows the normal usage method of a column large group welding system. It is a top view which shows the conventional usage method of a column large group welding system.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Joint core 11 Workpiece of joint core 11b Workpiece of joint core 12 Column 13 Diaphragm 13b Diaphragm 13z Side part 20 Rotary positioner 25 Welding robot 30 Welding jig 31 Columnar main body 32 Holding end 33 Holding plate 33a Holding Surface 34 Groove 35a, 35b, 35c, 35d Tightening member 36 Bolt 50 Through hole 55 Positioning projection 60 Rotating clamp

Claims (8)

A welding device for producing a joint core that is provided with a plate-like diaphragm welded to both ends of a short columnar column and serves as a connection part between a column and a beam of a steel building,
A pair of rotation positioners that are arranged at a required interval, hold the columnar member at two locations in the longitudinal direction, and rotate with reference to the axis of the columnar member;
A welding robot for welding the welded portion of the workpiece held by the pair of rotary positioners;
The columnar main body portion that is held in a state of penetrating both of the pair of rotation positioners, and the work piece of the joint core in which the diaphragm is temporarily welded to both ends of the column are held in a cantilever manner by restraining one of the diaphragms. And a welding jig composed of holding end portions respectively provided at both ends of the columnar main body portion,
The diaphragm of the workpiece of the joint core is provided with a through hole, and the workpiece of the joint core is positioned at each holding end of the welding jig by fitting inside the through hole. A welding apparatus according to a steel column joint core, wherein a positioning projection is provided at each holding end of a welding jig.   The welding apparatus according to claim 1, wherein a plurality of the through holes are provided in the diaphragm, and a plurality of positioning protrusions corresponding to the through holes are provided at the holding end. .   The holding end includes a holding plate having a flat holding surface, and a holding plate for holding the work of the splicing core by tightening one diaphragm of the work of the splicing core from at least two directions. 3. The steel column joint core according to claim 1, further comprising: at least two pairs of fastening members that are radially movable on the holding surface and can be fixed at a required position. Such a welding apparatus.   The tightening member is slidably disposed along a groove provided in the radial direction on the holding plate, and is fastened so that it can be abutted and tightened along an inclined side portion of the diaphragm. The welding apparatus according to claim 3, wherein a portion to be brought into contact with and tightened in contact with the side portion of the steel column is rotatably provided.   The fastening member is slidably disposed along a groove provided in the radial direction on the holding plate, and at least one pair can be expanded and contracted in the radial direction synchronously, and one side is a reverse screw with respect to the other side. The welding apparatus according to claim 3, wherein the welding bolt is screwed to each side of the provided bolt.   The columnar main body portion is constituted by two cylindrical members, and one of the cylindrical members is fitted in a nested manner with respect to the other cylindrical member, so that the welding jig can be extended and contracted in the longitudinal direction. 6. The welding apparatus according to claim 1, 2, 3, 4 or 5, wherein the steel column has a joint core.   A welding jig for a steel column joint core, which is provided to be used in a welding apparatus for a steel column joint core according to claim 1, 2, 3, 4, 5 or 6. . It is a welding device for producing a joint core that is connected to a column and beam of a steel building with a plate-shaped diaphragm welded to both ends of a short columnar column, and is arranged at a required interval A pair of rotary positioners that hold the columnar member at two locations in the longitudinal direction and rotate with reference to the axis of the columnar member, and a welded portion of the workpiece held by the pair of rotational positioners. By constraining one diaphragm with a welding robot, a columnar main body that is held in a state of passing through both of the pair of rotary positioners, and a work piece of a joint core in which diaphragms are temporarily welded to both ends of the column. Using a welding apparatus for a steel column joint core comprising a welding jig composed of holding end portions respectively provided at both ends of the columnar main body portion to be held in a cantilever manner,
The welding jig is held on the pair of rotary positioners, and then the workpiece of the joint core is held on each holding end of the welding jig, and then the welding core A welding method according to a joint core of a steel column, wherein a welded portion of a workpiece is welded.

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