JPH11192588A - Automatic welding equipment for anchor fitting for panel reinforcement - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a welding equipment for anchor fittings for a matt/basket- shaped panel reinforcement, that facilitates automation, that reduces the size of an anchor fitting, and that also brings accuracy for the welding position of the anchor fitting. SOLUTION: The equipment is constituted such that a panel reinforcement 6 is brought into a position from one direction by a conveyor 5 for the welding of an anchor fitting 7 and that, after the front end of the panel reinforcement 6 is pressed against a planar stopper and stopped, the reinforcing bar 6a of the panel reinforcement 6 is fixed by a clamp 1a, with the anchor fitting 7 welded to the reinforcing bar 6a. The anchor fitting 7 is desirably welded to one reinforcing bar 6a, while the clamp 1a is preferably the one having a pair of oppositely facing recessed parts 1aa for clamping the reinforcing bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic welding apparatus for anchoring a concrete panel to a panel reinforcement of a concrete panel. More specifically, a mat-shaped panel reinforcing member formed by welding a plurality of reinforcing bars of a concrete panel by welding, or a cage-shaped panel reinforcing member formed by connecting the mat-shaped panel reinforcing members for mounting the panel. The present invention relates to a device for automatically welding an anchor to a panel reinforcement, which automatically welds the anchor and saves labor and labor.

[0002]

2. Description of the Related Art PC panels, lightweight concrete panels,
2. Description of the Related Art A reinforcing panel made of reinforcing steel is buried in a concrete panel used for a wall or a floor such as a lightweight cellular concrete panel, mainly for securing strength. This panel reinforcement is usually arranged by crossing the reinforcing bars vertically and horizontally,
In most cases, vertical and horizontal reinforcing bars are formed in a mat shape by welding each other, or a plurality of such mat-shaped panel reinforcing bodies are arranged in parallel and connected with a connecting member to form a cage. In some cases, such panel reinforcements are welded and fixed to anchors for attachment to the building frame and buried in the panels.

A similar panel reinforcing member is embedded in a lightweight cellular concrete panel (hereinafter referred to as an ALC panel) among concrete panels. In the case of this ALC panel, in order to further increase the fastening force of the panel to the building frame, an anchor fitting is previously welded to the panel reinforcing member in the panel manufacturing process.

Further, various techniques for welding an anchor fitting to such a panel reinforcing body or for manufacturing the panel with high productivity have been studied. In particular, welding work of an anchor fitting to an ALC panel reinforcing body has been studied. And a method for efficiently performing the process on a production line (e.g., on a transfer device by a conveyor device) have been proposed. As an example, as shown in FIG. 8, when attaching the anchor metal member 73 to the basket-shaped panel reinforcing member 71 by welding, the panel reinforcing member 71 is easily carried out by performing a welding operation on the conveyor device 72. By using the jig 75 for attachment, the anchor metal 73 to the panel reinforcement 71 is provided.
A device for efficiently setting the mounting position of the camera is known (Japanese Patent Application Laid-Open No. 63-59503).

In this device, after the panel reinforcing member 71 is carried into the anchor fitting welding work position from one direction, the front end of the panel reinforcing member 71 is locked to the end point fixing member 74 fixed to the device frame 76. This is a device for positioning and fixing the anchor metal 73 to a reinforcing bar to be welded to the panel reinforcing body 71.

[0006] Further, as a method of easily automating the welding of the anchor to the panel reinforcing member on the production line, the present applicant has manufactured a mat-like panel reinforcing member to which the anchor has been welded beforehand. A method of forming a cage-shaped panel reinforcing body by connecting the mat-shaped panel reinforcing body to another mat-shaped panel reinforcing body has been proposed before (JP-A-1-280149, not shown). In this publication, even if there is a displacement between the reinforcing bar and the anchor, it is easy to hold and position the anchor at the time of welding by using an L-shaped main plate provided with a nut as the anchor. It is described that it can be.

Further, the present applicant has also proposed a method of forming a mat-like panel reinforcement using a reinforcing steel bar to which an anchor metal is welded in advance in order to facilitate automation in a production process. (Japanese Unexamined Patent Publication No. 1-24211)
No. 0, not shown). Also in the present invention, a plurality of legs (L-shaped main plate, etc.) are attached to a nut as an anchor.
Is used.

[0008]

SUMMARY OF THE INVENTION In the above-described apparatus and method for welding an anchor to a panel reinforcing member, the apparatus disclosed in Japanese Patent Application Laid-Open No. 63-59503 facilitates the welding operation of an anchor on a conveyor device. Although it is an apparatus that can be used, the welding operation is performed manually and is not an invention for automation, and it is difficult to apply it to automation because of the following reasons.

That is, as described above, the present invention relates to a device for stopping the front end of a mat-shaped or cage-shaped panel reinforcing member, a mounting jig (welding jig), and the like. Usually, the reinforcing bar is bent right and left because of the welding distortion. Therefore, even if the front end of the panel reinforcing member is stopped, the position of the reinforcing reinforcing bar to be welded to the anchor is not always always at the correct position or angle, but rather the position often varies. Further, also in the stopping means, there is a problem that the position of the reinforcing reinforcing bar is deviated simply by stopping, since the cage-shaped panel reinforcing body has some elasticity. In order to prevent such a problem from occurring, it is actually impossible to increase the welding position accuracy of the reinforcing steel bar and perform a welding operation in which welding distortion does not occur. Further, it is extremely difficult to automatically and accurately match the reinforcing steel bar with the anchor, and to automatically perform welding by moving a welding device or the like to that position.

According to the invention disclosed in Japanese Patent Application Laid-Open No. 1-280149, the reinforcing reinforcing bar and the anchor metal can be easily positioned. However, since the position of the reinforcing bar to be welded to the panel reinforcing member varies, L The welding position of the reinforcing bar to the mold main plate portion varies. Therefore, even in the present invention, there is a problem that defective products due to poor welding are generated even when automation is performed. Furthermore, since it is necessary to provide a main plate portion for absorbing the displacement of the welding position in the anchor metal, the shape of the anchor metal is limited, and the size of the anchor metal is increased by the amount of the main plate. Will be higher. In addition, since the main plate portion of the anchor is weak against a force applied vertically thereto, there is a problem that the strength of the anchor is not so high.

The invention of Japanese Patent Application Laid-Open No. 1-234210 is the same as the problem of the above-mentioned invention, and furthermore, in this method, a step of welding an anchor and a reinforcing bar, and a method of connecting the reinforcing bar to a mat-shaped panel reinforcing body. There is a problem that both the welding step and the welding step are required, resulting in a decrease in production efficiency and an increase in cost due to an increase in various devices.

Accordingly, an object of the present invention is to accurately and completely weld an anchor fitting to a panel reinforcing member while the mat or basket-like panel reinforcing member is being conveyed on its production line, that is, by a conveyor device. It is an object of the present invention to provide an automatic welding apparatus that can perform the welding automatically and is not limited to the shape and size of the anchor metal fittings at that time, and further enables the welding process to be performed in one step.

[0013]

In order to solve the above-mentioned problems, in the present invention, a mat-shaped or cage-shaped panel reinforcing body made of a plurality of reinforcing bars embedded in a concrete panel is provided on a conveyor device. A device for automatically welding an anchor to the panel reinforcing member during conveyance by a gripping mechanism for gripping a reinforcing bar to be welded with the anchor and fixing the reinforcing bar at a preset position. An automatic welding apparatus including an anchor metal supply mechanism for supplying the anchor metal to the reinforcing steel bar and abutting the anchor metal, and a welding mechanism for welding the reinforcing steel bar and the anchor metal metal is adopted.

In the automatic welding apparatus of the present invention, when the panel reinforcing member and the anchor are automatically welded,
Since a part of the reinforcing bar to be welded is first gripped by the gripping mechanism to fix the position of the reinforcing bar, the reinforcing bar is always fixed at the same position and at the correct position. Therefore, when the anchor is supplied to the reinforcing bar whose position is fixed by the supply mechanism, the anchor is accurately brought into contact with the reinforcing bar, and the welding position of the anchor is not shifted. Similarly, when the welding mechanism is moved to the welding position, the positioning can be accurately and easily performed.

The gripping mechanism according to the present invention can be applied to any mechanism that grips a predetermined position of a reinforcing bar to be welded. However, if the mechanism is configured to grip both sides of a position where an anchor is welded, the reinforcing bar can be more accurately positioned. Position can be fixed.
Therefore, welding can be performed more accurately. Also,
More preferably, the gripping mechanism has a pair of concave portions for gripping a pair of reinforcing bars facing each other, and the concave portions move in synchronization with each other. The concave portion allows the reinforcing bar to be more securely and firmly gripped, and moves in synchronization with each other, so that the gripping of the reinforcing bar is smoothly released after the welding is completed. That is, in the case of the one-side moving mechanism, when the gripping of the reinforcing bar is released and the gripping mechanism is moved or moved up and down after welding is completed, the reinforcing bar may be caught by the concave portion and cannot be released smoothly. In order to eliminate the problem, it is necessary to complicate the movement of the gripping mechanism.

The automatic welding apparatus according to the present invention can be applied even when the panel reinforcing member is running on the conveyor device. However, the automatic welding device according to the present invention may be provided with a stop mechanism for temporarily stopping the panel reinforcing member by a stopper. More desirable. That is, in such a welding device, the panel reinforcement is carried into the welding process position by the conveyor device, and the panel reinforcement is stopped before only the reinforcing bar to be welded by the panel reinforcement is gripped and fixed by the gripping mechanism. By stopping with the mechanism, the position of the reinforcing bar to be welded can be located at or near the position of the gripping mechanism, so that the gripping is reliable and easy, and furthermore, the gripping device is moved for gripping the reinforcing bar. The mechanism can also be omitted.

Further, even if the stop position of the reinforcing bar does not coincide with the position of the gripping mechanism, the position does not greatly deviate from the position. Therefore, the distance between the stop position and the reinforcing bar to be welded is calculated by the controller. By doing so, it becomes possible to match the positions of the gripping mechanism and the reinforcing bar to be welded.

Further, in order to improve the positional accuracy of the anchor, it is more desirable that the welding mechanism employs a system in which the anchor is wire-welded to one reinforcing bar. That is,
When an anchor is welded to a plurality of reinforcing bars, not only does the gripping mechanism and welding mechanism become complicated, but also the gap between the reinforcing bars is forcibly fixed by a clamping mechanism such as a clamp, and welding is performed. When the clamp or the like is released after welding, the reinforcing reinforcing bar is likely to be deformed, and the positional accuracy of the anchor may be reduced. On the other hand, if the method of welding the anchor to one reinforcing bar is used, such a problem does not occur, and the entire device can be simplified, and the size of the anchor itself can be increased by welding to one reinforcing bar. Can also be reduced. When welding to one reinforcing bar, use multiple spot welding (resistance welding)
It is possible to fix the anchor by welding or spot welding by arc welding, but it is more preferable to use arc welding to compensate for the drawback that welding can be performed only in a straight line.

In the present invention, the supply and delivery of the panel reinforcing body to the automatic welding device is performed on the production line, that is, the conveyor device. Therefore, labor can be saved even in the supply and delivery operation. Roller conveyor, belt conveyor, chain conveyor, etc. can be applied.

[0020]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an entire automatic welding apparatus for an anchor metal 7 to a panel reinforcing member 6 of the present invention.
It comprises a welding mechanism 3, a panel reinforcing body stopping mechanism 4, and a conveyor device 5. As shown in FIG. 1, the welding mechanism 3 and the gripping mechanism 1 are mounted on one upper moving frame 8, and the upper moving frame 8 is vertically moved by a driving cylinder 8a. Further, below the conveyor device 5, an anchor fitting supply mechanism 2 that supplies the anchor fitting 7 to the reinforcing reinforcing bar 6a to be welded and makes contact therewith is installed.

As shown in FIG. 2, the gripping mechanism 1 includes a reinforcing reinforcing bar 6 to be welded to the anchor 7 of the panel reinforcing body 6.
a, a clamp 1a including a front arm 1ab and a rear arm 1ac, a clamping cylinder 1b, and an arm 1a.
b, 1ac, and a pinion 1d. The concave portion 1aa has a V-shape in which the radius of curvature at the bottom end is equal to or smaller than the diameter of the reinforcing reinforcing bar 6a, and its entrance is widened. Therefore, even if the position of the reinforcing bar 6a is slightly displaced up and down, the concave portion 1a
a can serve as a guide to force the reinforcing bar 6a to a fixed position, and when the reinforcing bar 6a is grasped, it can be prevented from moving in any direction, up, down, front and back.

The front arm 1ab of the clamp 1a is directly connected to the clamping cylinder 1b, while the rear arm 1ac moves in the opposite direction in synchronization with the movement of the front arm 1ab. That is, the supporting rod 1c of the front arm 1ab and the rear arm 1ac has
A plurality of lateral grooves are dug so as to face each other to form a rack, between which a pinion 1d having a fixed shaft meshes. By this mechanism, the clamps 1a having the concave portions 1aa move substantially in synchronization with each other.

As shown in FIG. 3, the anchor fitting supply mechanism 2 moves from a bowl feeder (not shown) that aligns and transports the anchor fitting 7 by vibration to a linear feeder 2g that similarly transports the anchor fitting 7 by vibration. The air-driven chuck 2a that grips the supplied anchor fitting 7 so as to cover the cylindrical portion, the lifting cylinder 2b that raises and lowers the chuck by about several tens of cm, its guide rod, and the lifting cylinder 2b It comprises a rotating arm 2c for rotating vertically from the direction, a rotating cylinder 2d and a lower moving frame 2e to which these are attached. The lower moving frame 2e is a servo motor 2
It is structured to move in the width direction of the panel reinforcing member 6 by f, a ball screw and its guide rod.

The welding mechanism 3 is, as shown in FIG.
This is an arc welding mechanism using a gas shielded arc welding solid wire (YGW12) defined in Z3312 and using carbon dioxide gas as a shielding gas, and includes a pair of welding torches 3a and a torch cylinder 3b. The center of the torch 3a is provided at a distance of several tens mm in the direction of the reinforcing bar 6b (transverse bar) of the panel reinforcing body 6, and is provided at an angle of several degrees when viewed from the front of the panel reinforcing body 6. In addition, they are provided at an angle of several degrees in opposite directions when viewed from the lateral direction of the panel reinforcement 6. This torch 3
In general, a has a structure in which both are integrally moved by the torch cylinder 3b in the left and right direction (the length direction of the reinforcing steel bar) by about 1 cm.

As shown in FIG. 4, the stop mechanism 4 of the panel reinforcing member 6 includes a flat stopper 4a, a stop mechanism frame 4b, a servomotor 4e, and a lifting cylinder 4f.
And so on. As shown in FIG. 5, rack rails 4c are laid on both sides of the upper part of the conveyor device 5 so that the stop mechanism frame 4b of this mechanism can move almost the entire length of the panel reinforcing member 6. A plate-like stopper 4a for stopping the panel reinforcing member 6 by pressing against the panel reinforcing member 6 is provided on the upper part of the conveyor device 5, and a gear 4d meshing with the rack rail 4c is provided on the stopping mechanism frame 4b. Is provided, and can be moved by the servo motor 4e.

The frame 4b is guided by a number of cam followers 4h so as not to shift in the vertical and horizontal directions. Further, the stopper 4a is attached to the stopping mechanism frame 4b via a thin cylinder 4g for releasing the stopper 4a forward after stopping the lifting cylinder 4f and the panel reinforcing member 6.

As shown in FIG. 1, the conveyor device 5 is a roller conveyor, and its roller 5a is provided with a groove 5b which becomes a path for a vertical line 6c of a reinforcing reinforcing bar 6. Further, the roller 5a is a magnet, so that even when the roller 5a is suddenly operated, the vertical stripes 6c of the panel reinforcing member 6 do not protrude from the groove 5b. The groove 5b prevents the panel reinforcing member 6 from coming off in the width direction.

As shown in FIG. 6, the cage-shaped panel reinforcing member 6 has four reinforcing bars (vertical bars) 6c each having a diameter of about 5 mm arranged at equal intervals in a vertical direction, and a horizontal bar 6b is placed on the vertical bars 6c. The high and low currents are sandwiched between the electrodes from the upper and lower sides thereof, and a high-voltage current is applied thereto. The horizontal stripes 6b are welded to both ends of the vertical stripes 6c, and the horizontal stripes 6b are also welded therebetween at intervals of approximately 60 cm. The panel reinforcing members 6 thus formed in a mat shape are vertically arranged in parallel at intervals of 6 cm and have a diameter of 3 m.
They are connected by about m connecting members 6d and are formed in a cage shape. However, a reinforcing bar (lateral bar) 6a to be welded to the anchor 7 is resistance-welded to the vertical bar at a position 27 cm from both ends of the upper mat of the panel reinforcing member 6. No horizontal streak is welded at that position.

As shown in FIG. 7, the anchor 7 has a nut 7a for fastening to an external member via a bolt.
And a cylindrical portion 7b configured to wrap the outer periphery of the nut 7a, a flat plate portion 7c projecting from both ends of the cylindrical portion 7b in a wing shape, and a substantially U-shaped portion of the flat plate portion 7c opposite to the nut 7a. And a locking portion 7d formed in a shape. The nut 7a is threaded with M12, and the U-shaped engaging portion 7d is large enough to fit on a reinforcing bar having a thickness of 5 mm.

Hereinafter, the operation of the automatic welding apparatus according to this embodiment will be described. The positions of the upper moving frame 8 of the welding mechanism 3 and the gripping mechanism 1 are set in advance such that the welding mechanism 3 is located substantially at the center of the panel reinforcing member 6 in the width direction. A flat plate stopper 4a is set at a position 27 cm forward of the anchor fitting welding position of the automatic welding device, and the panel reinforcing member 6 is transported from the manufacturing device of the panel reinforcing member 6 to the automatic welding device by a conveyor device using rollers 5a. When it comes
The panel reinforcement 6 stops at the front end thereof against the stopper 4a. Also, even if the panel reinforcing member 6 rebounds due to the reaction, if the roller 5a is kept rotating in the traveling direction of the panel reinforcing member 6, the panel reinforcing member 6 stops again against the stopper 4a. When the panel reinforcing member 6 is almost stopped, the roller 5a stops, and the stopper 4a escapes forward by the thin cylinder 4g to move the lifting cylinder 4a.
f.

Next, when the upper moving frame 8 is lowered and the clamp 1a is closed, the gripping mechanism 1 grips and fixes both sides of the welding position of one reinforcing reinforcing bar 6a to which the panel reinforcing member 6 is to be welded. At this time, the reinforcing reinforcing bar 6a is always fixed at the same position and at an accurate position. Thereafter, the lower moving frame 2e moves forward, and the chuck 2a attached to the tip of the elevating cylinder 2b which has been turned sideways is attached to the anchor fitting 7 supplied to the foremost part of the linear feeder 2g.
Is gripped so as to cover the cylindrical portion 7b, and when the rotating cylinder 2d is operated, the elevating cylinder 2b is rotated and stands up.

At the same time as the operation of the rotating cylinder 2d, the servo motor 2f operates to move the lifting cylinder 2b to the lower center of the panel reinforcing member 6 in the width direction. When both operations are completed, the chuck 2a is raised by operating the elevating cylinder 2b, and the locking portion 7d of the anchor 7 is brought into contact with the reinforcing steel bar 6a. At this time, since the reinforcing reinforcing bar 6a is always fixed at the same position and at the correct position, the locking portion 7d of the anchor 7 is accurately brought into contact with the reinforcing reinforcing bar 6a.

The torch 3a of the welding mechanism 3 is located just above the reinforcing bar 6a and the anchoring portion 7d of the anchor, and applies a high voltage between the arc welding wire and the panel reinforcing member 6. Performs arc welding. at the same time,
While welding, the torch 3 is provided by the torch cylinder 3b.
When a is moved about 1 cm to the left and right (the length direction of the reinforcing steel),
The U-shaped locking portion 7d of the anchor 7 is wire-welded to the reinforcing bar 6a. As a result, the pair of locking pieces of the locking portion 7d are welded by half so that the opposite sides remain, but sufficient strength can be obtained.

When the welding is completed in this manner, the clamp 1a of the gripping mechanism 1 is released and the upper moving frame 8 is released.
Rises. Further, the chuck 2a of the supply mechanism 2 is also released, and the elevating cylinder 2b is lowered. By this series of operations, the anchor 7 on the front side of the panel reinforcing member 6 was accurately welded.
The flat stopper 4a of the stop mechanism 4 is set so that the metal welding position of the automatic welding device is located at the reinforcing bar 6a to be welded at a position of 7 cm, and the same steps as before are followed. Accordingly, the anchor 7 on the rear side of the panel reinforcement 6 is also accurately welded.

As described above, one embodiment of the present invention has been described in detail. However, the present invention can be modified according to the fundamental technical idea thereof, as long as the effect of the present invention is not significantly impaired. For example, in the present embodiment, the welding position of the anchor is fixed to the center in the width direction of the panel reinforcing member, but may be mounted offset in the width direction according to a demand at the time of use. Next, the panel reinforcement
Anchor fittings can also be welded to the four corners, and then the panel reinforcement is fixed at a fixed position, and the automatic welding device is also moved in the front-rear direction of the panel reinforcement, thereby securing the panel reinforcement. Anchor fittings can be welded to required positions. Further, by providing two sets of automatic welding devices, it is also possible to simultaneously weld anchors to both ends of the panel reinforcement. In the present embodiment, the stop mechanism is a plate-shaped stopper 4 a provided on the panel reinforcing body 6.
Is pressed to stop the panel reinforcing member 6, but may be a mechanism for stopping the panel reinforcing member 6 by sandwiching the panel reinforcing member 6 from both sides.

[0036]

As described above in detail, according to the apparatus for automatically welding an anchor to a panel reinforcement according to the present invention, a mat-like or cage-like panel reinforcement is produced on a production line.
That is, welding of the anchor metal to the panel reinforcing member can be performed accurately and completely automatically while being conveyed by the conveyor device or the like. Therefore, it is possible to significantly reduce labor and labor, including supply and delivery of the panel reinforcement to the apparatus. In addition, at that time, the shape and size of the anchor are not limited, and the welding process can be performed in one process. Furthermore, since there is no need to provide a flat plate portion or the like for absorbing the displacement of the welding position in the anchor metal, the anchor metal can be made smaller by the amount of the flat plate, thereby reducing the unit price of the anchor metal and reducing the strength of the anchor metal. Can also be raised.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a welding mechanism and a gripping mechanism of an automatic welding device according to the present invention.

FIG. 2 is a side view showing a gripping mechanism of the automatic welding device according to the present invention.

FIG. 3 is a perspective view showing an anchor fitting supply device of the automatic welding device according to the present invention.

FIG. 4 is a perspective view showing a stop mechanism of the automatic welding device according to the present invention.

FIG. 5 is a side view showing the entirety of the automatic welding apparatus of the present invention.

FIG. 6 is a perspective view showing an example of a panel reinforcement used in the present invention.

FIG. 7 is a perspective view showing an example of an anchor used in the present invention.

FIG. 8 is a perspective view showing a conventional welding device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 gripping mechanism 1aa concave portion for gripping a pair of reinforcing bars 2 anchor metal supply mechanism 3 welding mechanism 4 stopping mechanism 4a stopper 5 conveyor device 6 panel reinforcing body 6a reinforcing bar to be welded 7 anchor metal

Claims (5)

[Claims] A mat-shaped or cage-shaped panel reinforcement (6) comprising a plurality of reinforcing bars embedded in a concrete panel and being conveyed by a conveyor device (5), the panel reinforcement (6). ), Which automatically welds an anchor (7) to the reinforcing metal (6) to be welded to the anchor (7).
a) a gripping mechanism (1) for gripping and fixing at a preset position, and an anchor metal supply mechanism (2) for supplying the anchor metal (7) to the reinforcing steel bar (6a) and abutting the anchor metal (7).
And a welding mechanism (3) for welding the reinforcing steel bar (6a) and the anchor fitting (7). An automatic welding apparatus for an anchor fitting to a panel reinforcement, comprising: 2. An anchor fitting for a panel reinforcing body according to claim 1, wherein said holding mechanism (1) is a mechanism for holding both sides of a position where said anchor fitting of said reinforcing reinforcing bar (6a) to be welded is welded. Automatic welding equipment. 3. The gripping mechanism (1) has a pair of opposing concave portions (1aa) for gripping reinforcing bars, and the concave portions (1aa) move in synchronization with each other. 3. An automatic welding apparatus for an anchor fitting to a panel reinforcement according to claim 1. 4. The panel reinforcement (6) is connected to a stopper (4).
The automatic welding device for an anchor fitting to a panel reinforcing body according to any one of claims 1 to 3, further comprising a stop mechanism (4) for stopping by (a). 5. The panel reinforcement according to claim 1, wherein said welding mechanism (3) wire-welds said anchor (7) to one reinforcing bar (6a). Automatic welding equipment for anchors to the body.