JPS6110862Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is a replaceable die set in which the upper and lower electrodes and the jig can be replaced as a unit depending on the object to be welded, and the replacement can be done easily and in a short time. The present invention relates to a welding machine having a member.

In the past, several types of die set change methods have been devised that allow the upper and lower electrodes and the jig to be replaced as a single unit, but in all cases the replacement work is complicated and it is impossible to replace them immediately, and it requires a lot of effort.

In the present invention, various types of die set members are prepared by combining the upper and lower electrodes and the jig in one piece, and this can be replaced as a unit with one exclusively for the object to be welded. By eliminating the need for so-called centering, which is an adjustment work between the jig and the welding machine body to which it is attached, which was conventionally done based on the intuition of the operator, jig replacement work is simplified and shortened. This makes it possible to reduce the labor involved in the replacement work, and also to configure the welding machine body and the die-setting device differently, making it possible to replace only the die-setting member. It is an object of the present invention to provide a welding machine having a replaceable die setting device, which can thereby reduce the cost of the welding device.

The configuration of the present invention will be explained below according to an embodiment shown in the drawings.

In the drawing, reference numeral 2a is the lower arm of the welding machine main body A, and a floating bearing 5 is provided on the surface of the lower arm of the welding machine main body A, and a floating bearing 5 is provided on the surface of the lower arm so that a die set member to be placed thereon, which will be described later, can be freely moved and retracted. A positioning fitting 7 is provided that matches the corner of the die set base and positions the die set member, and furthermore, a positioning metal fitting 7 is provided around the part where the die set base should be located, and the floating bearing 5 is placed to press the die set base. Four clampers 6 are provided that have a compressive force to immerse the body.

2b is the upper arm of the welding machine main body A, which performs pressurizing, energizing, and releasing operations. In other words, 13 is a rod of a pressurizing cylinder, and a secondary electrode plate 12 is attached to the tip of the rod.
Pressure can be applied by operating a switch (not shown).
Performs energization and release operations.

Next, the structure of die set member B will be explained. That is, 1 is a die set base, on which the lower electrode A is implanted via a stand having a required height. A contact 9 is connected to the secondary circuit and is in contact with the die set base 1.
Reference numeral 10 denotes an upper die set, which is supported vertically by two guides 8 provided on the die set base 1 and containing springs (or air cylinders). Reference numeral 3 denotes an upper electrode, which is attached to the upper die set 10, facing the lower electrode. In this embodiment, the welding current is supplied to the upper electrode 3 through the secondary plate 12, the contact 11, and the upper die set, and to the lower electrode 4, it is supplied through the contact 9 and the die set base 1. .

Next, a method of installing and using this embodiment will be explained. In this embodiment, the welding machine main body A into which the die set member B is assembled is configured to be able to incorporate various types of die set members. On the other hand, several types of die set members are prepared, each having its own size, shape, etc., depending on the object to be welded. When welding, regarding the above-mentioned configuration,
A die set member B dedicated to the workpiece is assembled onto the welding machine main body A, which does not include a jig or an electrode. This assembly is carried out by transporting the die set member B to be used using a transport device, for example a trolley, and pushing it onto the lower arm surface 2a. At this time, since there is a floating bearing 5 on the lower arm surface 2a, the die set base 1 is floating without contacting the lower arm surface 2a, so the die set member B can easily move on the lower arm surface 2a. In addition, it can be placed in the correct position using the positioning fitting 7. Once the die set member B is placed in the correct position, the die set base 1 is further compressed and fixed by the clamper 6. At this time, the floating bearing 5 is recessed by pressure from the clamper 6, and the back surface of the die set base 1 comes into contact with the lower arm surface 2a, and air and water circuits (not shown) formed between the two are also connected. Further, the contact 9 is brought into contact with one surface of the die set base to complete the assembly.

After completing the above assembly, welding can be performed in the same manner as with a normal welding machine. That is, when released, the secondary plate 12 provided on the upper arm 2a is located at the top, and the upper die set 10 is pushed up by the spring of the guide 8, creating a predetermined gap between the upper and lower electrodes 3 and 4. It is formed. When welding, the workpiece is first placed on the lower electrode, and then the pressure of the welding machine body A is turned on to extend the rod B and lower the secondary plate 12. The secondary plate 12 presses the contact 9 and presses the upper die set 1.
0 and the upper electrode 3 attached to it are pressed down, the workpiece is pressurized, and electricity is further applied to perform welding. When welding is completed, the secondary plate 12 rises, and at the same time the upper die set 10 is also pushed upward by the spring of the guide 8, and the upper electrode releases the workpiece, completing the entire welding process.

The above welding process is repeated to weld the same workpiece or a workpiece that can be welded with this die set member B. Next, when welding a workpiece that is not applicable to this die set member B,
After removing the clamper 6 and making the die set member B movable, it is pulled out, and a die set member of another type is assembled into the welding machine main body A using the above-described assembly method, and welding can be performed using the welding process described above.

As explained above, in the present invention, firstly, the upper and lower electrodes and the jig are integrated, so there is no need to position the jig and the welding machine body, and the operator does not have to manually perform the conventional process of replacing the welding machine. This eliminates the need for precision adjustment between the two, and therefore the die set member can be replaced in a short time.
Second, in the past, the die setting device and the upper and lower arms of the welding machine body were screwed together with bolts, etc.
According to the present invention, the upper arm is not engaged at all, and the lower arm is simply clamped by the clamper, so it is easy to assemble and remove it, and in this respect, the replacement time is doubled. Can be shortened.

Thirdly, in the past, quick fittings were used to cool the electrodes and connect the air circuits of the cylinders for locating pins, which the operator had to remove or attach each time they were replaced. Connection of these air circuits can be done automatically at the same time as installation, which reduces the labor burden on workers.Fourthly, water and air leaks may occur during replacement due to the same reason. The work environment can be improved since there is no

Fifth, in the present invention, if one welding machine is installed, any workpiece can be welded simply by preparing a die setting jig for each workpiece. This has many effects such as being able to reduce costs.

[Brief explanation of the drawing]

The drawing is a perspective view showing an embodiment of the present invention. 1... Die set base, 2a... Lower arm, 2b
... Upper arm, 3 ... Upper electrode, 4 ... Lower electrode, A
... Welding machine body, B... Die setting device.

Claims (1)

[Scope of utility model registration request] A welding machine body has an upper arm that performs pressurizing, energizing, and releasing operations, and a lower arm located opposite the upper arm, and a die set base that is removably assembled between the upper and lower arms of the welding machine body. a die set member integrally comprising a lower electrode provided thereon and an upper electrode that faces the lower electrode and moves up and down as the upper arm pressurizes and releases the workpiece, and fixes and pressurizes the workpiece to be welded; A welding machine characterized by a die set member that is replaceable depending on the object to be welded (workpiece).