JPH0516959B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a jig used for welding sockets such as small tubes to pipes.

Prior Art and Problems of the Invention When welding sockets to the side of a pipe, conventionally, the end of the socket was fitted into a hole drilled in the pipe, and the angle and insertion depth were adjusted while applying a ruler to various parts around the pipe. It is determined and welded.

This work is difficult because the ruler must be applied to various places around the socket, which requires a great deal of effort, and the position of the sockets tends to move during the work. Therefore, the accuracy of the finished product is naturally low,
Many defective products occur.

Therefore, the present invention makes this welding work easier.
The purpose of this invention is to obtain a jig that can perform the process with high precision.

Means for Solving the Problems The present invention provides a shaft body whose end is supported, extends substantially horizontally, and can be covered with a pipe to be welded;
A supporting piece is provided on both sides of the upper half of the shaft to support the covered pipe and is suspended parallel to the shaft, and a support piece is provided at the upper end of the shaft and has a flat top surface, and is attached to the axis of the shaft. Welding of sockets consisting of a base plate that extends long parallel to the pipe and passes through a hole formed in the covered pipe, and a base plate that can be placed perpendicular to the axis of the pipe and oriented in the radial direction of the pipe. It is a jig for use.

Note that it is preferable to provide a center line extending parallel to the axis of the shaft body at the center of the surface of the base plate.

Examples Examples illustrating the present invention will be specifically described below.

FIG. 1 shows the entire welding jig 10. In this jig 10, reference numeral 11 is a shaft body, which is made of a pipe, whose end is fixed to a base 12, and whose entire length extends approximately horizontally.As shown in FIGS. 2 and 3, a pipe 13 to be welded can be covered. 14,...
is a support piece, which is made of a substantially arc-shaped plate piece, and is provided protruding from both sides of the upper half of the shaft body 11 at two locations, and supports the inner surface of the covered pipe 13.
is suspended from the shaft body 11. Reference numeral 15 denotes a base plate, which is made of a flat and elongated plate, is attached to the upper end of the shaft body 11, has a horizontal surface on its upper surface, and extends long in parallel to the axis of the shaft body 11. Reference numeral 16 denotes a center line, which is drawn at the center of the surface of the base plate 15 so as to extend parallel to the axis of the shaft body 11.

This jig 10 is used as follows.

First, as shown in Figures 2 and 3, the shaft body 1
1 is covered with the pipe 13 to be welded. In this way, the pipe 13 is suspended while being supported by the support pieces 14, and the axes of the pipe 13 and the shaft body 11 are parallel to each other. Next, look directly above the center line 16 of the base plate 15 through the hole 17 formed in the pipe 13 to attach the socket, and make sure that the marking line 18 indicating the center of the hole 17 previously drawn on the side of the pipe 13 is Rotate the pipes 13 so that they overlap,
Determine the position. Next, the socket 19 is fitted into the hole 17 and pressed against the base plate 15, and the hole 17 and the socket 19 are temporarily welded. Note that the lower end of the socket 19 is made in advance to be properly perpendicular to the axis. In this way, the axis of the socket 19 is correctly perpendicular to the axis of the shaft body 11, that is, the pipe 13, and is oriented in the radial direction of the pipe 13. After this, the final welding is done to complete the product.

The work of aligning the marking line 18 and the center line 16 described above is necessary when installing multiple sockets on one pipe with their angles aligned accurately, and one socket is installed on one pipe. In this case, it is unnecessary, and of course, in this case, it is also unnecessary to provide a center line in a dedicated jig.

Effects of the Invention As mentioned above, the welding jig of the present invention can be used when welding sockets to pipes, simplifying the work, and accurately determining the mounting angle of the sockets, thereby making it easier to weld the product. accuracy can be improved. Furthermore, by using this jig, the depth of insertion into the pipe at the lower end of the sockets can be made uniform, and in this respect as well, product precision can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the present invention, FIG. 2 is a perspective view showing the same example in use, and FIG. 3 is a sectional view taken along the line -- in the previous figure. 10... Jig for welding sockets, 11... Shaft, 12... Base, 13... Pipe, 14,...
... Support piece, 15 ... Base plate, 16 ... Center line, 17
...hole, 18...marked line, 19...socket.

Claims (1)

[Scope of Claims] 1. A shaft whose end is supported, extends substantially horizontally, and can be covered with a pipe to be welded, and which is provided protruding from both sides of the upper half of the shaft to support the covered pipe, a support piece that is suspended parallel to the shaft;
A socket is provided at the upper end of the shaft, has a flat top surface, extends long parallel to the axis of the shaft, and passes through a hole formed in the covered pipe, and is perpendicular to the axis of the pipe. A jig for welding sockets, consisting of a base plate that can be placed in the radial direction. 2. The jig for welding sockets according to claim 1, wherein a center line extending parallel to the axis of the shaft body is provided at the center of the surface of the base plate.