JP5685705B2 - Back cover for column - Google Patents

Description

The present invention relates to a column backing metal (hereinafter simply referred to as a backing metal) used when welding a steel frame used for a structural framework.

In recent years, there has been a demand for reliable welding in the vicinity of the R-shaped portion of the column. Accordingly, improvement of backing metal and reliable assembly and fixing method are required. In particular, there is a method capable of dealing with robot welding that is automatically welded by a machine. Has attracted attention.
Up to now, the inner surface 85 of the R-shaped portion and the inner surface 85 or the outer surface 86 of the portion in contact with the weld bead on the inner surface of the column are grouped with a plurality of grooves 83 and grooves 84 respectively. There is a backing steel 80 having a flat steel structure. (For example, refer to Patent Document 1.)

The backing metal 80 having a structure in which a plurality of continuous grooves 83 are formed in the R-shaped portion can be bent by the user with his / her hand when the mounting metal 80 is attached to the column 9 to form the R-shape of the backing metal. It has characteristics.
Further, the backing metal 80 has a feature that the vicinity of the plurality of grooves 84 of the backing metal body is deformed so as to wrap the weld bead on the inner side surface of the column.
JP 2005-152977 A

The backing metal 80 having a structure in which a plurality of continuous grooves 83 are formed in the R-shaped portion in advance has a plurality of grooves 83 and is bent by hand. On the other hand, the plurality of grooves are formed during main welding, particularly during robot welding. In the vicinity of 83, there was a problem that the molten metal was likely to fall off.
In addition, a jig is used in advance to be accommodated in the column 9, and the R-shaped portion 83 of the backing metal 80 is formed in accordance with the column shape, so that the bending work at the installation site is burdensome for the operator. There was a problem.

  On the other hand, the bent backing metal 71 that is generally used for bending is often manufactured in advance with a larger backing metal R shape than the column R shape because the column R shape is not stable. When the backing metal 71 is accommodated in the column 9, the backing metal R-shaped portion 77 and the column R-shaped portion 10 may be separated from each other by about 3 mm to 4 mm with a gap between them. During the main welding of the column 9 and the diaphragm 11 assembled and welded with the 71 interposed therebetween, a welding defect is likely to occur in the vicinity of this gap, and in particular in the case of robot welding for regular welding, a problem that a welding defect is likely to occur. There was a point.

  In addition, the U-shaped backing metal is further divided into two parts and a rectangular frame is formed by four members, which improves the assembly accuracy, but the mounting work on the column is cumbersome and inefficient. Because it is not commonly used.

  In addition, the backing metal 80 of Patent Document 1 having a feature that the vicinity of the plurality of grooves 84 of the backing metal body is deformed in accordance with the weld bead on the inner surface of the column is used for the purpose of the backing metal 1 of the present invention. Is different. Therefore, when the groove widths of the plurality of grooves 84 are simultaneously expanded or narrowed, the backing metal plane portion does not expand or contract in the longitudinal direction across the grooves of the plurality of grooves 84.

  An object of the present invention is to solve the above-described problems of the prior art. Specifically, the mounting to the column 9 is simple, and the shape of the backing metal body 2 can be deformed to improve the assembly accuracy. In particular, the column R-shaped portion 10 and the backing metal R that cause welding defects. Backing that has the advantage that the gap with the shape part 7 can be adjusted to be small and secures a sufficient thickness of the backing metal during the main welding so that the molten metal does not easily fall out in the R-shaped part of the backing metal. Is to provide money.

  In the backing metal disposed on the inner surface of the column, the main body is formed and used in the shape of a rectangular frame made of one or two members having the same shape by bending a belt-shaped metal plate. It is characterized in that at least one portion of the backing metal plane part sandwiched between the backing metal R-shaped parts has a pair of grooves that are located opposite to each other and are deeper than the shortest distance from each other. By forming the pair of grooves, the backing metal main body, which can be easily adjusted, is deformed to improve the assembly accuracy of the backing metal into the column.

The backing metal of the present invention has a structure in which a groove is formed in a folded backing metal of the prior art, and can be easily attached to a column and assembled and welded in the same manner as in the prior art.
Further, since the backing metal main body can be deformed, there is an effect that high-precision assembly welding can be performed on the column while adjusting.
As a result, the molten metal is prevented from falling off in the R-shaped portion of the backing metal during the main welding of the column and the diaphragm sandwiching the backing metal of the present invention, and the R-shaped portion of the backing metal and the R-shaped portion of the column It is also possible to make it difficult to generate welding defects that are likely to occur in the vicinity of the gap. This is particularly effective during robot welding.
Furthermore, it is possible to reduce defective products that cannot be accommodated in the column.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a backing metal 1 of the present invention, which is sandwiched between two backing metal R-shaped portions 7 of a main body 2 which is formed and used in a rectangular frame shape made of one member by bending a band-shaped metal plate. In addition, a pair of grooves 3 are formed on the three backing metal plane portions 8 in a diagonally opposite state and are formed deeper than the shortest distance from each other.
Further, the bending R dimension of the backing metal 1 is set to be small in advance, so that it is easy to assemble the column 9 with high accuracy.
As shown in FIG. 2, the main body 2 of the backing metal 1 is separated from the inner side surface of the column by using the groove 3 as a fulcrum while the side surface 6 of the backing metal moves in parallel as the width of the groove 3 increases or decreases. By bending in the wearing direction and the width of the pair of grooves 3 simultaneously expanding or narrowing, the backing metal flat surface portion 8 is deformable so as to expand and contract in the longitudinal direction across the pair of grooves 3. .
As shown in FIG. 3, the backing metal 1 is accommodated in a column 9, and when it is tightened along the column 9 with a tool such as a hand or a shrimp vise, it is brought into close contact with the column while being deformed and assembled and welded.

The two backing metal R-shaped portions 7 sandwiching the pair of grooves 3 of the backing metal main body 2 may be configured to be bent when they are attached to the column 9.
Further, the depth of the pair of grooves 3 may not be the same.
Further, as shown in FIG. 8, the object can be achieved even if the cutting insertion angle of the groove 63 of the backing metal 61 is not vertical.

  Next, the backing metal in the present invention will be specifically described.

An embodiment of the backing metal of the present invention shown in FIG. 1 will be described.
As shown in FIG. 1, the backing metal body 2 is formed in a rectangular frame shape made of one member by bending a strip-shaped metal plate having a thickness of 9 mm, and is sandwiched between two backing metal R-shaped portions 7. A pair of grooves 3 each having a depth of 7 mm, which are positioned diagonally on the inner surface 5 of the backing metal and the outer surface 4 of the backing metal, are formed at a distance of 1 mm.
Further, the bending R dimension of the backing metal 1 is set in advance to be the same as the smallest R dimension among the four column R-shaped portions 10, and assembling to the column 9 with high accuracy is facilitated.
As shown in FIG. 2, the main body of the backing metal 1 is attached to and detached from the inner surface of the column with the groove 3 as a fulcrum while the lateral surface 6 of the backing metal moves in parallel as the width of the groove 3 expands or narrows. The backing metal plane portion 8 is deformable so as to be expanded and contracted in the longitudinal direction with the pair of grooves 3 being sandwiched by bending in the direction and the width of the pair of grooves 3 simultaneously expanding or narrowing.
As shown in FIG. 3, the backing metal 1 is accommodated in the column 9 and is tightly attached to the column 9 while being deformed when it is tightened along the column 9 with a tool such as a hand or a shrimp vise, and is assembled and welded.

  Therefore, it is possible to prevent the molten metal from falling off in the R-shaped portion of the backing metal during the main welding, and to make it difficult to generate welding defects that are likely to occur near the gap between the R-shaped portion 7 of the backing metal and the R-shaped portion 10 of the column. it can. This is particularly effective during robot welding.

In addition, when the width | variety of the groove | channel 3 of the backing metal 1 expands greatly, the groove | channel 3 can be filled by welding.
Further, in the embodiment, the pair of grooves 3 in the backing metal plane portion 8 sandwiched between the two backing metal R-shaped portions 7 of the backing metal 1 is formed with a depth of 7 mm and a distance of the groove 3 of 1 mm. Each of the backing metal bodies 2 may be of any dimension that can be deformed.

An embodiment of the backing metal of the present invention shown in FIG. 4 will be described.
FIG. 4 shows a backing metal 21 according to the present invention, which is composed of a main body 22 formed and used in the shape of a rectangular frame composed of two U-shaped members by bending a belt-shaped metal plate.
A groove 23, a backing metal outer surface 24, a backing metal inner side surface 25, a backing metal side surface 26, a backing metal R-shaped portion 27, and a backing metal flat surface portion 28 are formed.
In addition, since the bending R dimension is set to be small in advance and the backing metal R-shaped portion 27 is set at an acute angle and bent, the assembly with higher accuracy is further facilitated.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
Other operations are the same as those of the first embodiment, and the description thereof is omitted.

An embodiment of the backing metal of the present invention shown in FIG. 5 will be described.
As shown in FIG. 5, a groove is formed between the backing metal outer surface 34 and the backing metal inner surface 35 of the backing metal flat surface portion 38 sandwiched between the two backing metal R-shaped portions 37 of the main body 32 of the backing metal 31. 33 are alternately formed in a three-face diagonal state.
The groove 33 of the backing metal outer side surface 34 is formed with a depth of 7 mm, the groove 33 of the backing metal inner side surface 35 is formed with a depth of 5 mm, and the interval between the grooves 33 is 1 mm.
With respect to the action, by forming the two grooves 33 diagonally opposite each other with the one groove 33 interposed therebetween, the plane portion 38 is smoothly deformed in the longitudinal direction with the three grooves 33 interposed therebetween, and the expansion and contraction is further facilitated.
Further, by making the depth of the groove 33 on the inner surface 35 of the backing metal shallower, it is possible to make it difficult for the molten metal to fall off in the vicinity of the groove 33.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
Other operations are the same as those of the first embodiment, and the description thereof is omitted.

An embodiment of the backing metal of the present invention shown in FIG. 6 will be described.
As shown in FIG. 6, a plurality of pairs of grooves 43 are formed in a plane portion 48 sandwiched between two backing metal R-shaped portions 47 of the backing metal 41.
The backing metal main body 42 is formed with a backing metal outer side surface 44 and a backing metal inner side surface 45.
By forming a plurality of sets of the pair of grooves 43, the assembly to the column 9 with higher accuracy is further facilitated.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
Other operations are the same as those of the first embodiment, and the description thereof is omitted.

An embodiment of the backing metal of the present invention shown in FIG. 7 will be described.
As shown in FIG. 7, the main body 52 of the backing metal 51 is formed in a rectangular frame shape made of one member by bending a strip-shaped metal plate having a thickness of 9 mm and a width of 25 mm. A pair of grooves 53 each having a depth of 23 mm are formed at a distance of 1 mm on both side surfaces 56 of the backing metal plane portion 58 of the backing metal flat portion 58 sandwiched between the shape portions 57.
The backing metal outer side surface 54 and the backing metal inner side surface 55 are formed respectively, and the main body 52 does not act to bend in the attaching / detaching direction with respect to the column inner side surface, but the width of the pair of grooves 53 is increased or decreased simultaneously. Thus, the backing metal flat surface portion 58 has a deformable structure that expands and contracts in the longitudinal direction with the pair of grooves 53 interposed therebetween.
Since other configurations are the same as those of the first embodiment, description thereof is omitted.
Other operations are the same as those of the first embodiment, and the description thereof is omitted.

It is the whole perspective view which showed the backing metal for columns of the 1st example of the present invention. It is action explanatory drawing which showed the backing metal for columns of 1st Example of this invention. It is the perspective view which showed the state which attached the backing metal for columns of 1st Example of this invention to the column. It is the whole perspective view which showed the backing metal for columns of 2nd Example of this invention. It is the whole perspective view which showed the backing metal for columns of 3rd Example of this invention. It is the whole perspective view which showed the backing metal for columns of 4th Example of this invention. It is the whole perspective view which showed the backing metal for columns of 5th Example of this invention. It is the whole perspective view which showed the backing metal for columns of the other Example of this invention. It is the whole perspective view which showed the backing metal by which the bending process of the prior art example was carried out. It is the front view which showed the backing metal by which the bending process of the prior art example was carried out. It is the whole perspective view which showed the backing metal of the structure which forms the several continuous groove | channel of a prior art example.

1. Column backing metal 2, body 3, groove 4, backing metal outer surface 5, backing metal inner surface 6, backing metal side surface 7, backing metal R-shaped portion 8, backing metal flat surface portion 9, Column 10, column R-shaped part 11, diaphragm

Claims (2)

At least of the backing metal plane part sandwiched between the two backing metal R-shaped parts of the main body formed and used in the shape of a rectangular frame composed of one or two members having the same shape by bending a belt-shaped metal plate Column backing metal characterized by having a pair of grooves that are located in a face-to-face diagonal state and are deeper than the shortest distance from each other at one location 2. The column backing metal according to claim 1, wherein the width of the pair of grooves simultaneously expands or narrows so that the plane portion of the backing metal expands and contracts in the longitudinal direction across the pair of grooves.

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