JP2561428Y2 - End tab for welding - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a welding end tab used for welding a steel frame used for a framework of a structure.

[0002]

2. Description of the Related Art As shown in FIGS. 8 and 9, when a steel frame is welded using a table (or a card) and an end tab, a column 11 and a beam 12 are arranged at a distance suitable for welding. Then, one end 13a of the backing metal 13 is
1 and the upper surface 13 b is arranged so as to contact the lower surface of the beam 12. The rectangular parallelepiped table 14 is welded to the column 11 such that one side surface 14a is arranged along the one side surface 11a of the column 11 and the other side surface 14b is in contact with the other side surface 11b of the column 11. The end tab 15 has a rhombic cross section, and one slope 15 a of the end tab 15 is the slope 1 of the beam 12.
The other side surface 15b is welded to the beam 12 along the other side surface 12b along 2a. When the column 11 and the beam 12 are welded in this state, there is a problem that the molten metal spills from the backing metal 13 and the corner 16 of the table 14 as shown in FIG. Therefore, an entdub in which an inclined surface is formed on the inner surface has been proposed (Japanese Patent Publication No.
No. 29519). However, since the end tab itself is set up vertically, it is possible to prevent the molten metal from spilling out.However, since the end tab is set up vertically, the end tab itself becomes a hindrance, and a portion near the inside of the end tab at the time of welding is used. It was extremely difficult to observe welding conditions such as defects. Further, when a defect occurs in this portion, the already attached end tab hinders the gouging process. Therefore, it is necessary to remove the end tab, attach the new end tab again after the gouging process. In addition, since the end tabs are erected, it is necessary to make corrections later on the parts welded in the run-up process to raise the temperature until the temperature of the welding rod becomes a temperature suitable for welding, so the work efficiency of welding work is poor. There is a defect.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in order to solve the above-mentioned inconvenience, and it is intended to prevent molten metal from spilling out during welding and to prevent an object from being present above a beam. However, in addition to making it possible to observe the situation near the inside of the welding end tab, defects occur at the inside near the welding end tab, and even when gouging, there is no need to remove the welding end tab, and correction of welding in the approach process It is intended to provide a welding end tab which does not need to be performed.

[0004]

Means for Solving the Problems The invention according to claim 1 is:
A welding end tab arranged at an end of a welded portion to prevent molten metal from flowing out when welding a column and a beam using a backing metal and a table, and sequentially from below to above. A first inclined portion formed to be inclined in a direction away from the column, a table contact surface formed on one end surface of the first inclined portion and in contact with one side surface of the table, and a table contact surface A second inclined portion extending continuously from the first inclined portion on the opposite side to the beam direction and inclined in a direction away from the table gradually from below to above; and , Is characterized by having. The invention according to claim 2 is a welding end tab which is disposed at an end of a welded portion when a column and a beam are welded by using a backing metal and prevents molten metal from flowing out, and is provided from below. A first inclined portion formed so as to be gradually inclined upward in a direction away from the column, and a vertical wall continuously extended toward the column direction at one end of the first inclined portion. A projecting portion continuously formed at a lower portion of the vertical wall, and continuously extending toward the beam direction at the other end of the first inclined portion, and gradually extending vertically from below to below. A second inclined portion formed to be inclined in a direction away from the wall.

[0005]

According to the first and second aspects of the present invention,
The oblique part and the second inclined part make it possible to observe the molten state of the weld metal using the visibility of the tip of the welding rod and to incline the welding rod in the welding progress direction to the end, so that the columns and beams can be welded without defects. I can do it.

[0006]

1 to 3 show a first embodiment of a welding end tab according to the present invention. As shown in FIGS. 1 and 2, a first inclined portion 30 a of the welding end tab 30 is provided.
Are formed so as to be gradually inclined upward from the bottom in a direction away from the column 11. A table contact surface 30e that contacts one side surface 14a of the table 14 is formed on one end surface of the first inclined portion 30a. Further, a second inclined portion 30b is continuously bent and extended toward the column 11 on the first inclined portion 30a opposite to the table contact surface 30e. The second inclined portion 30b is formed so as to be inclined gradually from below to above in a direction away from the one side surface 14a of the table 14. A handle 30d is continuously formed on the second inclined portion 30b in a direction opposite to the table 14. The handle 30d has another side surface 30f formed so as to abut on the side surface 12b of the beam 12.

Next, the operation of the first embodiment will be described.
Pillar 11 and beam 12 using backing metal 13 and table 14
Will be described. First, the welding end tab 30 is placed on the backing metal 13 and the first inclined portion 30 is set.
a of the table abutment surface 30 e to one side surface 14 of the table 14
a, and the other side surface 30f of the handle 30d is brought into contact with the side surface 12b of the beam 12 so that the welding end tab 30
Is temporarily welded and positioned. Then, the column 11 and the beam 12 are reliably welded by welding the column 11 and the beam 12 with a welding rod. In this case, since the first inclined portion 30a and the second inclined portion 30b are both inclined so as to protrude outward, welding can be completed while the welding rod is inclined to the end, and welding can be completed to the end. You can see the status. In addition, the first inclined portion 30a, the second inclined portion 30b, and the backing metal 13 can reliably prevent the molten metal from falling off. Further, as shown in FIG. 1, the first inclined portion 30a is gradually inclined upward and downward in a direction away from the column 11, and the second inclined portion 30b
Is gradually inclined upward from the bottom in a direction away from the table 14, so that the welding can be completed by inclining the welding rod to the end in the welding traveling direction.
Since the slag is not involved in the molten metal and there is no lack in gas supply, generation of blow holes can be prevented. Furthermore, since the first inclined portion 30a and the second inclined portion 30b are inclined so as to gradually open upward from below, they protrude largely outward from the portion to be welded. A run-up step of raising the temperature until a temperature suitable for the welding can be performed at the inner bottom of the welding end tab 30. For this reason, since it is not necessary to correct the portion welded in the approaching process later, the working efficiency can be improved. Also, defects occur during welding work,
Even in the case of gouging, the welding end tabs 30 project greatly outward, so that gouging is easy and the inner wall is not cut off, so that it is not necessary to remove the welding end tabs 30, so that the work efficiency can be improved. Moreover, since the welded portion is easy to see, even if a harmful gas such as a gas generated from the coating material of the welding rod and a helium gas generated at the time of carbonic acid welding flows, the body can be shifted and avoided, which is sanitary.

FIG. 4 shows a welding end tab 3 of the first embodiment.
Another embodiment is shown. In this embodiment, the handle 30d is not formed.

[0009]

Second Embodiment FIGS. 5 to 7 show a second embodiment of the welding end tab according to the present invention. Note that the same components as those of the first embodiment are denoted by the same reference numerals, and description thereof is omitted. The welding end tab 40 of the second embodiment is a table 14.
Using only the backing metal 13 without using the pillar 11 and the beam 12
And a welding end tab used when welding is performed. As shown in FIG. 5, a vertical wall 40a is continuously bent and extended from the first inclined portion 30a toward the column 11 on one end side of the first inclined portion 30a of the welding end tab 40. A pillar contact surface 40b that contacts the pillar 11 is formed on an end face of the vertical wall 40a. The vertical wall 4
In the lower part of Oa, as shown in FIG.
Are continuously formed. The other configuration is the same as that of the first embodiment, and the description thereof is omitted.

Next, the operation of the second embodiment will be described. A case where the column 11 and the beam 12 are welded using the welding end tab 40 will be described. The inner surface of the projection 40c of the welding end tab 40 is brought into contact with the side surface of the backing metal 13, the column contact surface 40b is brought into contact with the column 11, and the other side surface 30f of the handle 30 is brought into contact with the side surface 12b of the beam 12. Then, the welding end tabs 40 are temporarily welded and positioned. And
By welding the column 11 and the beam 12 with a welding rod, the column 11
And the beam 12 are securely welded. Moreover, in this embodiment, since the vertical wall 40a is formed without using the table 14, the molten metal is spilled by the first inclined portion 30a, the second inclined portion 30b, the vertical wall 40a, and the backing metal 13. Can be reliably prevented. The other operation is the same as that of the first embodiment, and the description is omitted.

[0011]

As described above, the welding end tab according to the present invention can surely prevent the molten metal generated at the time of welding from spilling downward and has an object above the beam. Also, since welding can be performed while observing the situation inside the welding end tab during welding, the gas can be uniformly turned, and the column and beam can be welded without defects. Also,
The welding end tab according to the present invention has a defect in the vicinity of the inside of the welding end tab, so that it is not necessary to remove the welding end tab even when gouging, and to perform a start-up process for raising the temperature of the welding rod to a certain level or more. Since it can be performed inside the welding end tab, there is an excellent effect that the welding work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a first embodiment of a welding end tab in a state of contacting a column and a beam.

FIG. 2 is a front view of the first embodiment of the welding end tab in a state where the welding end tab is in contact with a column and a beam.

FIG. 3 is a side view of the first embodiment of the welding end tab.

FIG. 4 is a plan view of another embodiment of the first embodiment of the welding end tab.

FIG. 5 is a plan view of a second embodiment of a welding end tab.

FIG. 6 is a front view of a second embodiment of the welding end tab.

FIG. 7 is a side view of a second embodiment of the welding end tab.

FIG. 8 is a plan view of a second embodiment of the conventional welding end tab in a state in which it is in contact with a column and a beam.

FIG. 9 is a front view of a second embodiment of the conventional welding end tab in a state in which it is in contact with a column and a beam.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 ... Column 12 ... Beam 13 ... Backing metal 14 ... Table 30 ... End tab for welding 30a ... 1st inclined part 30b ... 2nd inclined part 40 ... End tab for welding 40a ・ ・ Vertical wall 40b ・ ・ Protrusion

Claims (2)

(57) [Scope of request for utility model registration] 1. A column and a beam using a backing metal and a table.
Is located at the end of the weld when welding
End tab for welding to prevent spillage.
Inclines gradually away from the pillar toward
Of the first inclined portion formed as described above, and one end of the first inclined portion
A table formed on the surface and abutting on one side of the table
A contact surface, and the first inclined surface opposite to the table contact surface
Is continuously extended in the beam direction at
From the table gradually upwards
A second inclined portion formed so as to be inclined at
An end tab for welding, characterized in that: 2. When welding a pillar and a beam using a backing metal
At the end of the weld to prevent the flow of molten metal
End tab for welding,
Formed so that it gradually slopes away from the pillar
A first inclined portion and one end of the first inclined portion in a column direction.
And a vertical wall extending continuously toward
A projection formed continuously at a lower portion;
It extends continuously toward the beam at the other end and
One that gradually separates from the vertical wall upwards
A second inclined portion formed so as to be inclined in the direction
An end tab for welding, comprising: