JP2568858B2 - Post-welding treatment of pipe frames - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a sheet member by bending a pipe member into a substantially quadrilateral axis and performing a welding process on the pipe member by flash butt, bead welding, or the like. The present invention relates to a post-welding treatment method for a pipe frame applied to manufacture a pipe frame or the like.

2. Description of the Related Art Generally, in order to assemble a pipe frame for a sheet, as shown in FIG. 4, a pipe member is axially bent into a substantially quadrangular shape, and a pipe frame 1 is formed by welding and fixing the ends of the pipe member. In addition, a welding process is employed in which the side frame 2 and the arm plate 3 are welded to the lower side of the side surface of the pipe frame 1.

This welding process generates spatter dust, which remains within the diameter of the pipe frame 1 and causes abnormal noise. Therefore, in order to remove the spatter dust, the pipe frame 1 is provided with a hole 4 in the lower cross beam portion.

Conventionally, as shown in FIG. 5, the hole 4 is usually punched and formed into a round hole by press molding.

However, when the punched hole 4 is punched into a round hole as described above,
The punched pieces fall into the diameter of the pipe frame 1, and the punched pieces also cause abnormal noise. Therefore, the punched pieces are taken out of the pipe diameter by extremely troublesome work.

Problems to be Solved by the Invention According to the present invention, even if a hole for discharging spatter debris is provided on the axis of a pipe member, spatter debris can be completely discharged without a punched piece that causes abnormal noise. It is an object of the present invention to provide a method for post-welding treatment of a pipe frame.

Means for Solving the Problems In the post-welding treatment method for a pipe frame according to the present invention, a pipe member is axially bent into a substantially quadrangular shape, and a welding process such as welding and fixing between ends of the pipe member is performed. In order to manufacture a pipe frame by this, the cut piece is raised upright in the diameter from the hole edge to provide a punched hole on the axis of the pipe member, and after the pipe member is welded, the cut piece is removed. Debris remaining in the diameter of the pipe frame is scattered to the cut piece as a debris shielding wall, and the debris is discharged and removed outside the diameter by a hole edge of a punched hole facing the cut piece.

Effect In this post-weld treatment method for pipe frames, the bent pieces are raised upright within the diameter of the hole edge so that the bent pieces remain within the diameter of the pipe member. Not only does it not have to be taken out from the inside diameter, but the cut piece is also used as a cut-off wall, and the remaining dust within the diameter of the pipe frame is scattered on the cut piece, and the cut-off hole is opposed to the cut piece. Since it is dispensed and removed outside the edge from the edge, it is possible to completely discharge the scrap outside the outside without leaving any scraps and the like on the back side of the cut piece.

Embodiment The following is a description with reference to FIGS.

As shown in FIG. 4, the method of welding and joining the pipe frame shown in FIG. 4 is to bend the pipe member into a substantially quadrilateral shape and fix the ends by welding, and to weld the side frame and the arm plate to the lower side of the side surface. This is applied to manufacture a pipe frame 10 for a sheet. In this welding process, flash butt, bead welding, or the like can be applied. According to the welding means, the end portions of the pipe members can be joined easily, and the side frame, the arm plate, and the like can be easily mounted.

As shown in FIG. 1, the pipe frame 10 is provided with a hole 11 having a size capable of discharging and removing spatter and the like on the axis of the lower cross beam. This hole 11
An opening can be formed in the same pressing step as when bending 10 into a substantially quadrangular shape. Also, this hole 11 is
As shown in the figure, the bent piece 12 is formed so as to stand upright from the hole edge within the diameter of the pipe frame 10 by cutting and bending the frame surface.

When the punched hole 11 is formed in this manner, the bent piece 12 is partially connected to the hole edge of the punched hole 11 and rises within the diameter of the pipe frame 10, which causes abnormal noise without being pulled out. Does not. In addition, the punched hole 11 can be easily formed by pressing the bent piece 12 upright.

In the pipe frame 10, as described above, welding between the ends of the pipe member and the like causes spatter dust and the like remaining in the diameter, but the dust is easily discharged to the outside of the hole from the hole 11 and removed. be able to. When disposing of the debris, the cut piece 12 acts as a debris shielding wall, and the debris hits the cut piece 12, so that the cut piece 12 is reliably discharged to the outside from the hole edge of the punched hole 11 facing the cut piece 12. can do. In addition, since spatter dust and the like remaining on the back side of the cut piece 12 can be turned into the front side of the cut piece 12 along the substantially quadrilateral axis within the diameter of the pipe frame 10, dust in the diameter is removed from the punched hole 11. It is possible to discharge completely outside the diameter from the hole edge.

Effect of the Invention As described above, according to the method for post-welding treatment of a pipe frame according to the present invention, the cut piece is raised in the diameter of the pipe member and left there to provide a punched hole, so that the diameter of the pipe frame is reduced. Not only does it not have to be taken out from the inside, but the cut piece is effectively used for discharging the waste, so that the spatter waste and the like can be completely discharged outside the diameter without leaving behind the cut piece.

[Brief description of the drawings]

1 is a partial plan view of a pipe frame provided with a hole to which the post-welding treatment method for a pipe frame according to the present invention is applied, FIG. 2 is a partial side sectional view of the same frame, and FIG. FIG. 4 is an explanatory view of a general pipe frame for a sheet, and FIG. 5 is an explanatory view of a punched hole to which a post-welding method of a conventional pipe frame is applied. 10: Pipe frame, 11: Drilled hole, 12: Cut piece.

Claims (1)

(57) [Claims] 1. A pipe frame is manufactured by performing a welding process such as bending a pipe member in a substantially quadrilateral shape and welding and fixing between ends of the pipe member. The pipe is raised upright within the diameter to form a hole on the axis of the pipe member, and after welding of the pipe member, the cut piece is used as a wall for cutting off the debris to cut off debris remaining in the pipe frame. A post-welding treatment method for a pipe frame, wherein the method is applied to a curved piece to discharge and remove debris outside a hole edge of a punched hole facing the cut piece.