JPH0642998B2 - Inversion device for welding - Google Patents

Description

The present invention relates to a welding reversing device capable of reversing the top and bottom of an H-section steel or the like when welding, for example, an H-section steel or the like.

In recent years, large-sized ones such as H-shaped and square pipes are often used for civil engineering and construction. For example, for square pipe steel column materials for high-rise construction, panel zones are welded for each floor and brackets are attached to this. Welding work is carried out in advance at the welding factory and is carried to the construction site to improve work efficiency.

As is well known, the downward welding is the most reliable welding work, and the welding strength and soundness are inferior in the vertical and upward welding.

Therefore, in the above-mentioned welding factory, the welding reversing device as shown in FIG. 1 is provided to horizontally support the columnar body, which is the main body of welding, and is rotated or inverted every 90 degrees, for example, to weld the bracket downward. To do.

The conventional welding reversing device 1 illustrated in FIG. 1 has a second leg stand 5 in a direction orthogonal to the first leg stand 3 placed in parallel.
・ 5 is provided so that the mutual distance can be changed, and its second leg 5
In FIG. 5, two sets of welding reversing devices 1.1 are provided as a pair with their axes aligned.

The welding reversing device 1 is provided with a rotating body 9 which is supported on the machine base 7 and is rotatable and positioned above the machine base 7. The rotary body 9 includes a suitable number of rollers 11 (not shown) (see FIG. 3). ) And is driven by the electric motor 13 to rotationally position the rotating body 9.

The welding reversing device 1 illustrated in FIG.
Is relatively small, and the diameter of the rotating body 9 is also small. Therefore, in order to hold the main body 15 to be welded such as a square tube on the rotating body 9, the opening / closing part 17 occupies almost 1/3 above the rotating body 9. Axis 1
The work of rotating around 9 and flipping up was done manually.

When the main body 15 to be welded becomes large in size, the rotating body 9 inevitably also becomes large, and the bracket 21 welded to the main body 15 to be welded becomes long, so that the height at which the main body 15 to be welded is supported horizontally becomes high. .

Therefore, there is a disadvantage in that the work of flipping up a part of the rotating body 9 becomes a heavy work with a risk.

In addition, the upper arm 23 shown in FIG.
When the main body 15 to be welded is rotated around (not shown) and inserted into the rotating body 9 from above, it is heavy and dangerous to manually move the main body 15 at a high position.

The present invention has been made for the purpose of eliminating the above-mentioned inconveniences of the conventional device, and a preferred embodiment will be described below in detail with reference to the drawings.

In the welding reversing device 1 according to the embodiment of the present invention, as shown in FIGS. 2, 3, and 4, the machine base 7 surrounds approximately 5/6 of the outer circumferential circle of the rotating body 9, The outer peripheral circular arc portion 25 of the rotating body 9 is also provided with a cutout portion 27 at approximately 1/6 portion.

The outer peripheral circular arc portion 25 of the rotating body 9 is supported or restricted by a plurality of bearing wheels 11 provided on the machine base 7 and is rotatable.

As is most apparent in FIG. 5, an arc gear 29 is attached to the outside of the outer peripheral arc portion 25 over the entire circumference except for the cutout portion 27.

On the other hand, the output of the geared motor 31 shown in the lower right of FIG. 5 is guided to the speed reducer 33 to drive the drive gear 35.
Further, the output is transmitted to the reduction gear 39 on the left side by the connecting shaft 37 shown in the lower part of FIG. 5 to drive the drive gear 41.

Therefore, the arc gear 29 is synchronously rotatably driven by the two drive gears 35 and 41 separated by a chord length distance larger than the chord length of the notch 27, so that the notch 27 is vertically moved. Regardless of which position is rotated to the left or right, at least one of the drive gears 35 and 41 is always in mesh with the arc gear 29, and the rotation of the rotating body 9 is not supported.

Next, as shown in FIG. 3, the center of the rotating body 9 has a substantially square space, and the left and right side wall portions 43.4 of FIG.
3, side pillars 45, 45 provided with a right-handed screw and a left-handed screw on the upper and lower sides of the center are rotatably supported by a lower bearing portion 47, an upper bearing portion 49 and a central bearing portion 51.

The lower arm 53 straddling the side pillars 45 and 45 is horizontally engaged with the screws of the side pillars 45 and 45 by nut members 55 and 55 (see FIG. 6), and the upper arm 23 described above also has a nut at both ends. The members 57 and 57 (see FIG. 7) are screwed to the side columns 45 and 45 while maintaining a horizontal posture.

As is apparent from FIG. 6, a bevel gear 59 is fixed to the lower end of the side column 45, and a handle 61 from the front is provided.
Is engaged with the bevel gear 63 provided on the.

As is apparent from FIG. 11, a sprocket 65 is provided at the lower end of the right side pillar 45, and the sprocket 65 provided at the lower end of the left side pillar 45 is synchronized with, for example, a chain (not shown). It then rotates.

As is apparent from FIGS. 7, 8 and 9, the upper arm 23 has the tubular body 6 around the nut member 57 of the right side pillar 45.
It is rotatably attached via 7, and is engaged with the small diameter portion 69 of the nut member 57 of the left side column 45.

That is, as shown in FIG. 8, the protruding portion 71 at the left end of the upper arm 23 is brought into contact with the small diameter portion 69 of the nut member 57 and stopped when the protruding portion 71 rotates from above and approaches the side pillar 45. The engagement pin 75, which is urged downward by the bullet 73 provided in the arm 23, is inserted into the engagement hole 79 provided in the flange member 77 at the lower end of the nut member 57.

As is apparent from FIG. 9, the flange member 77 has an inclined portion 81 on the engagement pin 75 side, which is processed to have a downward inclination, and a rotary wheel 83 is provided on the right side of FIG.

Further, the lower end flange members 7 of the left and right nut members 57, 57
7 is provided with a rolling wheel 87 which can be raised and lowered by being guided by a vertical groove 85 provided in the rotating body 9 and serves to prevent the nut member 57 from rotating.

A handle 89 is provided in the upper center of the upper arm 23, and a shaft 91 of the handle 89 is screwed into a nut member 93 provided on the upper arm 23. Therefore, by rotating the handle 89, the rotor 95 provided at the lower end of the shaft 91 presses and fixes the upper surface of the main body 15 to be welded.

As shown in FIG. 8, a protective plate 97 is provided on the side on which the upper arm 23 rotates so as not to adhere to the threaded portion of the sputter side column 45 during welding work. It keeps a state of being rotated around and being pressed by the ammunition 101 to be in close contact with the side surface of the upper arm 23 and a state of being kept open.

Next, the periphery of the lower arm 53 will be described with reference to FIGS. 10, 11 and 6.

On one side (corresponding to the front surface in FIG. 3) of the lower arm 53, a general width-bending device 103 of the main body 15 to be welded is provided.

In the width adjusting device 103, a left lead screw 109 is rotatably provided between the central bracket 105 and the left bracket 107, and a right lead screw 113 is rotatably provided between the central bracket 105 and the right bracket 111. Left handle 115 and right handle 11
7 and are fixed. Further, nut members 119 and 12 which are screwed into the lead screws 109 and 113, respectively.
1, the clamp claws 123 and 125 are provided, and by manually rotating the left and right handles 115 and 117, the positions of the clamp claws 123 and 125 are changed to the left and right, respectively.

It should be noted that as is apparent from FIGS. 6 and 11, the clamp claw 12
Since the upper surfaces of the beds of 3 and 125 are provided lower than the upper surface of the lower arm 53, the clamp claws 123 and 125 do not receive the weight of the main body 15 to be welded due to the width adjustment and the clamp, and can be easily moved manually. You can do it.

Further, as shown in FIG. 6, a protective plate 127 is fixed from the central support portion 51 of the side pillar 45 to the above-mentioned handle 61 so that welding spatter does not adhere to the screw of the side pillar 45.

A pointer 129 is provided on a part of the clamp claw 125 described above.
However, since the dimensional scale 131 is provided on a part of the lower arm 53, the moving position of the clamp claw 125 can be found.

Similarly, a pointer 133 is provided on a portion of the lower arm 53 near the side wall portion 43, and a dimensional scale 135 is provided on the side wall portion 43, so that the distance between the lower surface of the upper arm 23 and the upper surface of the lower arm 53 can be read. It is like this.

The embodiment of the present invention, which has been described in detail above, is the outer circumferential arc portion 2 of the rotating body 9.
Since the cutout portion 27 is provided in 5, the opening / closing portion 17 of the rotating body 9 does not have to be flipped up when the main body 15 to be welded is attached to the present apparatus, and the heavy labor associated with the danger of the conventional apparatus can be eliminated. is there.

Further, even when the upper arm 23 is rotated around the one side pillar 45, since the upper arm 23 is in contact with the upper surface of the flange portion 77 of the other side pillar 45 via the rotating wheel 83, the upper arm 23 can be easily rotated from the front. There is also an effect that can be moved.

Further, when the rotating body 9 is rotated by the electric motor 31, the drive gear 35 is at least two drive gears 35 separated by a distance larger than the chord length of the cutout portion 27. Nevertheless, there is the effect that it can freely rotate.

As will be understood from the above description of the embodiments, the present invention is, in short, the notch portion for receiving the main body to be welded (15) in the rotating body (9) rotatably supported by the machine base (7). (27) is provided, and a fixing device for fixing the main body (15) to be welded is provided in the notch (27) as a welding reversing device provided in the rotating body (9), and the rotating body ( In order to rotate the rotating body (9), a plurality of driving rotating members (35, 41) contacting the vicinity of the outer peripheral portion of the rotating body (9) are rotatably provided on the machine base (7), and the notch (27). ), The gap between the plurality of drive rotary members (35, 41) is set so that the rotary body (9) can be rotated regardless of the position of the notch (27). The width is larger than the width of the opening in the notch (27), and at least one of the openings is provided. Rolling member (35, 41) is always made in contact with the vicinity of the outer peripheral portion of the rotating body (9).

As is apparent from the above configuration, in the present invention, a member for closing this opening is provided at the opening of the notch 27 formed in the rotating body 9 for receiving and fixing the main body 15 to be welded. Not so, the configuration will be easier. Then, the rotating body 9 can be easily rotated regardless of the vertical or horizontal position of the notch 27 while the opening of the notch 27 is opened. In the present invention, a plurality of driving rotating members 35 and 41 are provided. An interval between the plurality of driving rotating members 35 and 41 is set to be larger than the width of the opening of the cutout portion 27, and at least one rotating member 35 and 41 is always provided near the outer peripheral portion of the rotating body 9. It is a structure that is brought into contact with each other.

Therefore, according to the present invention, the notch 2 in the rotating body 9
Even when the opening of 7 corresponds to one of the rotating members 35 by rotating up and down and right and left as appropriate, the other rotating member 41 is in contact with the vicinity of the outer peripheral portion of the rotating body 9. So
The rotating member 41 can be rotated by the other rotating member 41.

[Brief description of drawings]

 FIG. 1 is a perspective view of an example of a conventional device. FIG. 2 is a cross-sectional view of an embodiment of the present invention. FIG. 3 is a front view of the same as the above. FIG. 4 is a right side view of the same as the above. FIG. 6 is a side view of a side column drive-related portion. FIG. 7 is an enlarged sectional view around the upper arm. FIG. 8 is a sectional view taken along the line VIII-VIII in FIG. FIG. 10 is a plan view around the lower arm. FIG. 11 is a front partial view of the same. (Explanation of the symbols indicating the main parts of the drawing) 1 ... Reversing device for welding, 7 ... Machine base 9 ... Rotating body, 15 ... Main body to be welded 27 ... Notch, 35, 41 ... Drive gear

Claims (2)

[Claims] 1. A rotary body (9) rotatably supported by a machine base (7) is provided with a notch (27) for receiving a main body (15) to be welded, and the notch (27) is provided in the notch (27). A fixing device for fixing the main body to be welded (15) is used as a welding reversing device provided in the rotating body (9), and the outer peripheral portion of the rotating body (9) is rotated to rotate the rotating body (9). A plurality of rotating members (35, 41) for driving, which are in close contact with each other, are rotatably provided on the machine base (7), and the notch (27) remains open in the notch (27). The distance between the plurality of drive rotating members (35, 41) is set to be larger than the width of the opening in the cutout (27) so that the rotating body (9) can be rotated regardless of the position. At least one rotating member (35, 41) is always provided on the outer peripheral portion of the rotating body (9). Welding reversing apparatus characterized by comprising contacting the near. 2. A plurality of rotating members for driving (35, 41)
Is a drive gear meshing with a gear (29) provided on the rotating body (9), and a plurality of rotating members (35, 4) for driving.
Claim 1) is characterized in that it is linked to a common motor (31) mounted on the machine base (7).
Inversion device for welding according to the item.