JP3259154B2 - Engraving method of metal outer can used for battery and direction aligning device used for the engraving method - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for engraving a metal outer can used for a battery and a direction aligning apparatus used for the engraving method.

[0002]

2. Description of the Related Art A conventional battery manufacturing method will be described below.

[0003] FIG. 3 is a semi 截 side sectional view of a typical manganese batteries using a metal outer can. A positive electrode 3 comprising a carbon rod 1 and a positive electrode mixture 2, a negative electrode 4 comprising a zinc can, an electrolyte impregnated separator 5 for isolating the two electrodes, and a bottom paper 6 are provided. The battery is covered with a body 7, a bottom plate 8 and a seal ring 9 are used, the whole battery is wrapped with a resin tube 10, the cap is closed with a cap 11 and an insulating ring 12, and the whole is covered with a metal outer can 13. I have. Then, necessary markings such as a manufacturing date and a manufacturing number are provided on the bottom plate 8 as shown in FIG. FIG. 4
The bottom plate 8 shown in (1) was stamped with a stamping die when molding from a flat plate by a press machine.

However, when the stamp is worn, there is a problem that the contents of the stamp become unclear, and the management of the stamp for the wear is complicated.

[0005] When the content of the stamp is changed, productivity is inevitably reduced due to waste of time for switching the stamp during the production of the bottom plate.

On the other hand, there is a problem in that the smaller the battery size, the smaller the display content becomes, and the more invisible it is.

[0007] In order to solve these various problems, a technique has been proposed in which, after a battery is completed, the side surface of a metal outer can of the completed battery is engraved with a laser beam.

[0008] However, when this method is used, there is an engraved portion on the designed portion of the metal outer can, which is not preferable from the viewpoint of aesthetics.

When a laser beam is applied to the abutting portion, which is a minute void portion on the side surface of the metal outer can, not only is the character cut off but also a hole is formed in the resin tube 10 through the minute void. I will. If a hole is formed in the resin tube 10, when the battery is consumed, liquid leakage may occur.

[0010]

The conventional method of engraving the bottom plate before the completion of the battery with an engraving die involves problems such as abrasion of the engraving die and difficulty in observing the size of the battery. In the case of engraving a can with a laser beam, a laser beam may be applied to a butt portion, which is a minute gap in the vertical direction on the side surface, which may cause inconvenience.

SUMMARY OF THE INVENTION It is an object of the present invention to solve the conventional problems and to provide an excellent method of engraving a metal outer can used for a battery and a direction aligning apparatus used in the engraving method. It is.

[0012]

According to the present invention, in order to achieve the above object, the invention according to claim 1 is assembled into a battery.
Against abutting part is before the longitudinal direction of the linear gap caused by cylindrical bending forming a number of metal outer can has Teru
A notch is provided at a fixed position on the periphery of the opening,
Rotation stop on the periphery of opening with cutout of metal outer can
The metal outer can is rotated while pressing
By fitting into the notch of the metal outer can,
Stop the rotation of the metal outer can and stop the metal outer can
Of a number of metal outer cans with the
Using a common laser light source on the surface excluding the joint
This is a method for engraving a metal outer can that is engraved by laser light .

The invention according to claim 2 is based on claim 1.
Of the metal outer can
The metal outer can is formed at the end of the
Provided for curling the edge of the metal outer can when joining to
This is a method for engraving a metal outer can using the obtained V-shaped notch .

According to a third aspect of the present invention, there is provided a battery
Rotating a linear gap at a butt portion of the longitudinal caused by cylindrical folded form that a number of metal outer can Yusuke, a metal outer can having a cutout portion on the opening peripheral edge of the front stand
A rotating roller and pressed against the opening periphery of the metal outer can
A rotation stopping member that is, to stop the rotation of the metal outer can and when the rotation stopping member is fitted into the cutout portion of the metal outer can
The metal outer can was separated from the rotating roller.
This is a direction aligning device used for a method of engraving a metal outer can .

[0015]

In the invention according to claim 1, the metal outer can
Use notches to align multiple metal cans
Can be engraved on a metal outer can with a common laser light source
Can be applied.

Further, in the invention according to claim 2, the metal
To enable the outer can to be smoothly connected to the battery
V-shaped notch for metal outer can
The directions can be aligned.

[0017] In the invention according to claim 3, der which can be aligned direction of the metal outer can mechanically
You.

[0018]

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

First, the battery outer can will be described. As an example of the battery outer can used in the present invention, a metal outer can 13 having a V-shaped notch 15 at an end of a butt portion 14 as shown in FIG. 3 was used. As shown in FIG.
The V-shaped rotation stopper 16 is pressed against the upper part of the notch 15 of the third 3, and the metal outer can 13 is indirectly rotated by two rotating rollers 18 while attracting the metal outer can 13 by the magnet 17, The rotation stop body 16 is pressed from above, the lower end of the rotation stop body 16 is fitted into the V-shaped notch 15 of the metal outer can 13 to stop the rotation of the metal outer can 13, and the position of the metal outer can 13. And the butt 1 of the metal outer can 13
Remove 4 and always irradiate arbitrary laser light to the same position,
Since it is engraved, it is not engraved on the design part, there is no missing character, and no hole is formed in the resin tube.

According to the present embodiment, a sufficient effect was recognized in comprehensive evaluations such as improvement of quality by engraving and enlarging the display, efficiency of switching work of engraving content, and prevention of liquid leakage.

In this embodiment, the metal outer can 13 having a V-shaped notch 15 formed on the upper edge so that the upper edge of the metal outer can 13 can be smoothly curled and connected to other battery components.
However, the metal outer can 13
The same effect can be obtained as long as it is a metal outer can for a battery having a notch for stopping the rotation of the battery. The printed layer on the side surface of the metal outer can irradiated with the laser light is vaporized, and its trace becomes a mark. However, even on a metal surface, the mark can be formed by laser light irradiation.

[0022]

As described above, the present invention eliminates the problems of the size of characters and the wear of the stamping mold in the conventional stamping on the bottom plate, solves the problem of liquid leakage by laser light, and solves the problem of stamping. It is possible to realize a marking method which is excellent in a position, a size and a sharpness which are easy to see, and a direction aligning device therefor.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of a direction alignment device according to an embodiment of the present invention.

FIG. 2 is a perspective view of a metal outer can according to one embodiment of the present invention.

[Figure 3] semi 截 side cross-sectional view of a manganese dry cell in the conventional example

FIG. 4 is a plan view of a bottom plate in a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Carbon rod 2 Positive electrode mixture 3 Positive electrode 4 Negative electrode 5 Electrolyte impregnated separator 6 Bottom paper 7 Resin sealing body 8 Bottom plate 9 Seal ring 10 Resin tube 11 Cap 12 Insulating ring 13 Metal outer can 14 Butting part 15 Notch 16 Rotation stop 17 magnet 18 rotating roller

──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Tetsuya Kobayashi 1006 Kazuma Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Industrial Co., Ltd. (56) References JP-A-3-297053 (JP, A) 14118 (JP, Y2) (58) Field surveyed (Int. Cl. ⁷ , DB name) H01M 2/02

Claims (3)

(57) [Claims] 1. A large number of metal outer cans before being assembled into a battery
Position definite on the opening peripheral edge against the butt portion is a longitudinal direction of the linear gap caused by cylindrical bent form having the
A notch in the metal outer can.
While pressing the rotation stopper against the periphery of the opening
The outer can is rotated, and the rotation stopper is cut out from the metal outer can.
To stop the rotation of the metal outer can.
The butted portion of the metal outer can was aligned in a certain direction.
On the surface excluding the butted part of many metal outer cans
Marking with laser light using a common laser light source
Engraving method for metal outer cans. 2. The notch of the metal outer can according to claim 1.
Formed at the end of the butted part of the metal outer can
When connecting the metal outer can to the battery,
Metal using V-shaped notch provided for curling edge
How to engrave outer cans. 3. A large number of metal outer cans before being assembled into a battery
Has an abutting portion , which is a vertical linear gap caused by the formation of a cylindrical bend, and a notch on the periphery of the opening.
A rotating roller for rotating a metal outer can,
The rotation of the gold <br/> Shokugaiso cans stopped when the rotation stopping member pressed against the opening edge of Sokan, the times <br/> rotation stopping member is fitted into the cutout portion of the metal outer can Outside the metal than the rotating roller
Used for engraving metal outer cans configured to separate cans
Direction alignment device.