JPH0357351Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention relates to a joining jig for forming the bodies of various metal cans into cylindrical shapes.

[Conventional technology]

In the production of metal cans, there is a process of bending a plate material cut into squares to form a circular or square can body material with a part of the outer periphery open, and then overlapping the opposing open ends of this can body material. , or a step of butting them together, and a step of joining the separated ends together by resistance welding, laser welding, or the like.

This overlapping or butting process of the separated ends is performed on the can body material 10 as shown in FIG.
Both open ends 10a, 10b are engaged with guide grooves 5a, 5b formed on both sides of the jig 1, and the can body material 10 is pressurized from the left and right to move both open ends 10a, 10b into guide grooves 5a, 5b. The guide grooves 5a and 5b are configured such that the can body material 10 is forcibly transferred in the axial direction while being press-fitted therein, and the bottoms of the grooves become closer to each other toward the lower side.
A means for guiding the two open ends 10a, 10b to gradually approach each other is adopted.
(Publication No. 185484, Publication No. 49-26817).

However, the conventional joining jig 1 shown in FIG.
To further mention this, as shown in FIGS. 6 and 7, guide grooves 5a, 5 with a width slightly larger (1 mm) than the thickness of the can body plate are formed on both sides of each bar.
b was formed by cutting.

[Problem that the invention attempts to solve]

However, such a conventional jig has both guide grooves 5a, 5.
b are close to each other, and the guide grooves 5a, 5b
The biggest problem was that the groove bottoms had to be made extremely close to each other toward the end, which required a lot of work to machine the grooves with high precision and increased production costs.

Additionally, in the past, jigs were formed specifically for stacking or butting, and it was necessary to prepare various types of jigs depending on the joining form of can bodies, and they also had to be replaced whenever specifications changed. There was also a problem in this respect.

This invention has been proposed in view of the above circumstances, and aims to provide a joining jig that is relatively easy to process and can be adapted to various joining forms.

[Means for solving problems]

The joining jig of the present invention includes a jig piece 1a having a guide step 4a that is in contact with one open end 10a of a can body material 10, and a guide step 4b that is in contact with the other open end 10b. It consists of a jig piece 1b having a. In this way, each jig piece 1a, 1b is connected to these guide steps 4a,
4b have support frames 2a, 2b that individually support each other so as to face each other vertically, both support frames 2a,
Both support frames 2a, The guide step portion 4 is provided between the two jig pieces 1a and 1b.
A pair of guide grooves 5 opening left and right at a and 4b
A and 5b are required to be formed in different steps.

[Effect]

Although one jig piece 1a and the other jig piece 1b are individually cut,
When each is supported by each support frame 2a, 2b in a vertically opposing manner, the opposing open ends 10a of the can body material 10 are separated by guide steps 4a, 4b formed on the opposing surfaces of both jig pieces 1a, 1b. , 10b can be formed in a stepped manner as in the conventional example.

Both jig pieces 1a and 1 are attached to both support frames 2a and 2b.
The reason why the lateral position of at least one of the guide grooves b is adjustable is to enable the overlapping width of the guide grooves 5a and 5b to be adjusted as desired.

The reason why at least one of the support frames 2a and 2b can be adjusted by moving up and down is to adjust the distance between the two jig pieces 1a and 1b, that is, to adjust the distance between the two jig pieces 1a and 1b.
This is to adjust the upper and lower groove widths of the guide grooves 5a and 5b according to the plate thickness and the like.

[Effect of idea]

As explained above, the can body joining jig according to the present invention has a two-part structure formed by combining the pair of jig pieces 1a and 1b, so that the guide step portion 4a of each jig piece 1a and 1b, 4b can be formed only by external surface cutting, which is more accurate and easier to process than groove cutting, and the processing cost of the jig body can be significantly reduced.

In addition, by adjusting the relative positions of both jig pieces 1a and 1b, including the left and right sides and the top and bottom, the uneven guide groove 5
Since the overlapping width of steps a and 5b can be adjusted arbitrarily, the overlapping joining form and butt joining form of the open ends 10a and 10b of the can body material 10 can be arbitrarily selected with the jig set in the device. This allows equipment costs to be reduced by sharing jigs. In addition, it is possible to shorten the adjustment time when switching the joining form, which is advantageous in improving work efficiency.

〔Example〕

1 to 4 show an embodiment of a joining jig according to the present invention.

The proposed jig 1 consists of a pair of upper and lower jig pieces 1a and 1b made of square bar material, and each jig piece 1a and 1b is housed in a recess of a support frame 2a and 2b having a U-shaped cross section. Jig pieces 1a, 1 at multiple locations before and after
b and the support frames 2a, 2b, and pass through the horizontal pin 3, thereby attaching the jig pieces 1a, 1b to the support frame 2.
A and 2b are individually supported so as to be movable in the left and right directions.

On the lower surface of the upper jig piece 1a, there is a guide step 4a facing one side laterally (to the left in the figure).
Guide step portions 4b are formed on the upper surface of b, respectively, and extend toward the other side (to the right in the figure). , 1b are formed with a pair of guide grooves 5a and 5b that open left and right in a stepped manner.

Adjustment bolts 6 are attached to the left and right side walls of the support frames 2a and 2b, and by adjusting the adjustment bolts 6 forward and backward, the left and right positions of the upper and lower jig pieces 1a and 1b can be adjusted, respectively. The overlap distance between the guide grooves 5a and 5b at the inner depth can be adjusted as desired.

The jig 1 supported by the support frames 2a and 2b constructed as described above is connected and fixed to the upper and lower fixing frames 7 and 8 as shown in FIG.

A can body material 10 bent into a cylindrical shape is supplied from the right side of the present jig 1, and its opposing open end 1
0a and 10b are engaged in the left and right guide grooves 5a and 5b of the jig 1, respectively. The can body material 10 is forcibly moved to the left while being pressurized from the left and right by members not shown, and the open ends 10a and 10b are located at the innermost ends of the respective guide grooves 5a and 5b, that is, the respective jig pieces 1a and 1b. Guide stepped portion 4a,
4b, and when it comes out from the end of the jig 1, the two separated ends 10a and 10b overlap by an appropriate amount.

In front of the jig 1, there are arranged a guide block 11 that supports the joint part of the can body material 10 coming out from inside, and pressers 12, 12 such as a pair of front and rear guide rollers that press the joint part from above. A laser gun 13 is disposed at an intermediate portion between both pressers 12, 12 to face the overlapping joint of the can body raw material 10, and the laser gun 13 is arranged to face the overlapping joint of the can body raw material 10 extruded from the jig 1. The parts are continuously welded by a laser gun 13.

In this case, by adjusting the relative positions of the jig pieces 1a and 1b in the left and right and up and down directions, the overlap width of the guide grooves 5a and 5b can be adjusted to suit the diameter and thickness of the can body material 10. You can choose the matching amount as you like. Further, it is also possible to perform joining without overlap, that is, joining by butting. Furthermore, by adjusting the depths of the left and right guide grooves 5a, 5b, the angle of inclination of the groove bottoms of the guide grooves 5a, 5b with respect to the can body material transfer direction can be adjusted as desired.

In the present invention, only one of the jig pieces 1a and 1b may be adjustable in position in the left-right direction. Of course, the widths of the guide grooves 5a, 5b can also be made adjustable by vertically adjusting at least one of the jig pieces 1a, 1b arranged above and below.

[Brief explanation of drawings]

Figures 1 to 4 show an embodiment of the joining jig according to the present invention, where Figure 1 is an external view, Figure 2 is a partially cutaway side view in use, and Figure 3 is Second
FIG. 4 is a cross-sectional view taken along the - line in FIG. 2. 5 to 7 show a conventional example, with FIG. 5 being an external view, FIG. 6 being a longitudinal sectional front view thereof, and FIG. 7 being a front view thereof. 1a, 1b... Jig piece, 4a, 4b... Guide step, 5a, 5b... Guide groove, 7, 8... Support frame,
10... Can body material, 10a, 10b... Open end.

Claims (1)

[Claims for Utility Model Registration] The can body material 10, which is made by bending a rectangular plate material into a cylindrical shape, has guide grooves 5a and 5b into which opposing open ends 10a and 10b can be inserted, and the front and rear grooves are longitudinally oriented. While transferring the can body material 10 in the direction, both open ends 10a, 10b
A jig for joining can bodies that guides the can bodies toward each other, the jig piece 1a having a guide step 4a that one open end 10a of the can body material 10 comes into contact with, and the other open end 10b. and a jig piece 1b having a guide step 4b in contact with the jig pieces 1a, 1b.
It has support frames 2a and 2b that support each other individually so that they face each other vertically, and both jig pieces 1a and 1 are attached to both support frames 2a and 2b.
b, and at least one of the support frames 2a, 2b can be adjusted vertically to adjust the vertical spacing between the two jig pieces 1a, 1b. between the two jig pieces 1a, 1b, the guide step 4a,
A pair of guide grooves 5a, 5 that open left and right at 4b.
A jig for joining can bodies, characterized in that b is formed in a stepped manner.