JPS6019769Y2 - sheet metal straightener - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a sheet metal correction tool.

2. Description of the Related Art Conventionally, work to correct dents in the body of, for example, an automobile has been carried out in a manner as shown in FIG.

That is, first, as a first step, an annular pull-out ring 22 (usually a washer or the like is used) is attached to the electrode 21 connected to the transformer 20.

), the ring 22 is welded vertically to the recessed portion H, and the ring 22 is temporarily attached (see Figure 1).

Next, as a second step, a correction tool 24 equipped with a slidable hammer unit 236 called a slide hammer is used to attach the hole edge of the temporarily attached ring 22 with a hook 25 formed at its tip. Hook.

Then, while maintaining this state, press the slide hammer 24.
By strongly pulling toward the front side and colliding with the flange portion F, the concave portion H was partially pulled up via the ring 22 (see Figure 1).

In other words, it is necessary to change the tool twice during one operation, which inevitably delays the work, and in order to finally completely correct the dented H portion, the above operation must be repeated while changing the location. As a result, the work was delayed and caused a sense of complication to the workers.

Furthermore, the ring 22 may become extremely hot after temporary attachment, and when it is removed, the ring 22 may cause burns or other permanent damage.

The purpose of the present invention is to provide a sheet metal straightening tool that eliminates the above-mentioned permanent fixing and speeds up the work.

An embodiment of the present invention will be described below with reference to the drawings.

In the figure, reference numeral 1 denotes the entire correction tool, which is roughly composed of the aforementioned slide hammer SH as a main body, and an electrode part is integrally attached to the front side of the slide hammer SH.

First, the slide hammer SH will be described. Reference numeral 2 denotes a grip portion, and a flange-shaped contact surface 2A that comes into contact with the hammer unit 4 is formed on the front side of the grip portion.

Further, a hammer integral 4 is fitted into the slide shaft 3 extending forward of the grip portion 2, and the electrode portion and the contact surface 2 are fitted.
It is possible to slide between A and A.

Next, to explain the electrode part, 5 is the slide shaft 3
It is an insulator screwed onto the front end, and the electrode 6 is attached to this insulator 5.
It is screwed through.

The electrode 6 is formed into a cylindrical shape, and a connecting terminal 7 for connecting to the transformer 8 is screwed onto the outer peripheral surface of the electrode 6 .

However, a grip arm 9 is attached to the terminal on the transformer 8 side connected to this connection terminal 7 for convenience of use.

Further, a pull-out ring 10 (in this example, a washer is used as the pull-out ring, and the pull-out ring will be referred to as a washer hereinafter) is attached to the front end surface of the electrode 6.

) is recessed to attach the washer 10, and the washer 10 is removably clamped vertically in the groove 11 via a bolt 12 or the like.

Subsequently, the effects of this example configured as described above will be specifically explained.

For example, when correcting a dent H in the body of an automobile, first, one electrode of the transformer 8 is connected to the body side, and the other electrode is connected to the connection terminal 7 of the correction tool 1.

After that, when the transformer 8 is turned on and the washer 10 is brought into contact with a predetermined position in the recessed part of the body, the transformer 8 is turned on for a preset time (0.15eC in this example).
0.2 SeC), a current flows and the washer is welded with 10 force.

This causes the washer 10 to be temporarily attached to the body B.

In this state, when the hammer unit 4 is strongly pulled toward the front side and collided with the contact surface 2A, a pulling force of the dent H is applied to the washer 10, so that the dent H in the body B is corrected to its original state. Ru.

After this process is completed, the washer 10 is easily separated from the body B by rotating the grip arm 9 and twisting the entire correction tool 1.

In this way, by repeating the above steps while changing the location depending on the degree of the dent H, the dent H in the body B is almost completely corrected.

Therefore, according to this example, unlike the conventional method, special tools for each process, such as a tool for temporarily attaching the washer 10 and a tool for pulling out the dent H, are changed each time during the straightening work. Since it can be performed as a series of operations using a single instrument without having to perform the same operations, it is extremely effective in reducing the operating time in correction operations that require repeated operations.

In addition, when removing the washer 10 that has been temporarily attached, it can be easily separated from the body B by twisting the grip arm 9, and unlike in the past, there is no need for the worker to touch it directly with his/her hands. It also has the effect of protecting against burns and the like.

It should be noted that, as opposed to drawing, it is also possible to perform drawing work on sheet metal by using the gripping arm.

As described in detail above, the present invention includes an electrode section that is capable of attaching and detaching a pull-out ring that is temporarily attached by welding to a recess in a sheet metal, an integrated hammer for pulling out the recess, and a diameter from the electrode section. The gist is that the grip arm is integrated with the grip arm that protrudes in the direction.

In particular, in the present invention, since the gripping arm is provided on the electrode portion formed at the tip of the correction tool, it is easy to target and temporarily attach the pull-out ring to a desired location in the recessed portion of the sheet metal.

In addition, by applying a twist to the grip arm after pulling out the recessed portion with the hammer, the twisting force can be easily transmitted to the pull-out ring, and the pull-out ring can be easily disassembled.

In addition, the present invention allows temporarily attaching the pull-out ring and pulling out the recessed portion of the sheet metal with a single tool, and also allows the pull-out ring to be easily disassembled after pulling out the recessed portion, so that the process can be repeated multiple times. Correction work can be carried out smoothly.

In other words, the work time can be shortened by eliminating the need to use another tool.

In addition, since the pull-out ring is removably provided at the tip of the electrode part, the pull-out ring does not scatter and will not be lost.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, and FIG. It is an explanatory view showing a working state by a correction tool. 1... Correction tool, 2A... Contact surface, 4.
... Hammer integrated, D ... Electrode part, SH.
...Slide hammer, H...dent.

Claims (1)

[Scope of utility model registration request] A grip part, a slide shaft extending coaxially from the grip part, and a drawer ring that is connected to the front of the slide shaft and is temporarily attached by welding to a recess in the sheet metal at its tip can be attached and detached. a hammer unit that is slidably fitted onto the slide shaft and applies an impact force to the pull-out link in a direction to pull out the recess when abutted against the grip portion; and the electrode. A sheet metal orthodontic tool comprising: a grip arm projecting in a radial direction from the part.