JP2502602B2 - Lead-acid battery manufacturing method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method of manufacturing a lead storage battery, and more particularly to an improvement of a method of manufacturing an electrode plate group including shelves and poles.

2. Description of the Related Art Conventionally, the electrode plate assembly manufacturing method of this type is roughly classified into two types. One is the so-called "burning method" and the other is the "cast-on method".

As shown in FIG. 3, the "burning method" is a comb-shaped die a.
Is attached to the ear portion c of the electrode plate group b, and then the contact die d is attached to supply the precast pole post e to the predetermined position of the comb tooth-shaped die a, and then an appropriate amount of addition is added. This is a method in which lead is melted by a gas flame or an arc flame and, at the same time, a shelf is formed and a pole is provided.

On the other hand, the "cast-on method" is as shown in FIG.
Invert the electrode plate group (i) into the mold (a) that was previously provided with recesses for forming shelves and poles, insert the ears (c) into the mold (a), and supply molten lead (e.g. lead alloy) into the recess Or, immerse the ears c of the electrode plate group a in the recesses of the mold a into which the molten lead d has been injected in advance, so that the lead ears of the electrode plate and the ledges are sufficiently absorbed. Further, it is a method of cooling and solidifying to provide shelves and poles.

Problems to be Solved by the Invention Among these conventional methods, each method has its own drawbacks.

For example, in the "burning method", the positional accuracy of the electrode plate ears is extremely important because the comb-teeth mold is attached to the electrode plate ears, and the means for increasing the positional accuracy is very complicated. . Another disadvantage is that the comb tooth mold itself is complicated and expensive. Furthermore, it is necessary to cast the part in advance to form the pole column, and it is also necessary to supply the part to a predetermined position in the comb-shaped mold. In addition, it is necessary to melt lead with a gas flame or an arc flame to form a shelf, and at the same time, to weld a part of the poles, so that highly accurate equipment and parts are required.

The "cast-on method" has been proposed and industrialized as a means for solving these problems, but this method also has the following inherent problems. That is, since the energy of welding for connecting the electrode plate ears to the shelves depends only on the energy held by the molten lead, this is a problem caused by a very static method. That is, since a small oxide film on the edge of the electrode plate cannot be fused, it is necessary to remove the oxide film by brushing. Furthermore, it is necessary to increase the cleanliness of the ears depending on the flux of the surfactant / reducing solvent, but these fluxes generally have a great influence on the battery characteristics and are not preferable. In addition, the cycle of molten lead injection / immersion / cooling / solidification generally takes about 10 to 20 seconds, so productivity is extremely low, and large equipment is required to process a large number of electrode plates at the same time. It also had the drawback of

The present invention solves these problems, and an object thereof is to manufacture a highly reliable electrode plate group easily, inexpensively and with high productivity.

MEANS FOR SOLVING THE PROBLEMS In order to solve these problems, the present invention provides a mold in which recesses for forming shelves and poles are provided in advance, inclining and tilting the electrode plate group so that its ears are metal. A flameproof plate was inserted into the mold and covered with a certain gap between its ears, and rod-shaped lead for forming shelves and poles was abutted on the flameproof plate and supplied onto the mold. After that, by melting this rod-shaped lead with a gas flame or arc flame and injecting it into the mold, at the same time by melting a part of the electrode plate ears with the gas flame or arc flame and solidifying by welding,
This is to make a group of plates with shelves and poles at once.

Action With this configuration, rod-shaped lead melted by a gas flame or arc flame is injected into the mold, and at the same time, a part of the electrode plate ears is melted by the flame and is integrated with the lead forming the shelf part. A complete shelf is formed. At this time, since the flameproof plate covers the ears other than the parts to be melted, the undissolved ears are protected. Further, since a shelf and poles having a predetermined shape are formed in the mold, by separating the shelf and poles from the mold, an electrode plate group including the shelves and poles is completed.

EXAMPLE FIG. 1 shows an example of the present invention. In the figure, 1 is an electrode plate group, 2
Is a mold provided with recesses for forming shelves and poles, 3 is a flameproof plate that covers the ears of the electrode plate group with a certain gap from the mold,
Reference numeral 4 indicates rod-shaped lead for forming shelves and poles, and 5 indicates a heat source device that emits a gas flame or an arc flame. FIG. 2 shows an enlarged view of the welded portion.

Now, the preliminarily combined electrode plate group 1 is tilted and inverted, and its ears are supplied to a predetermined position in the mold 2. This mold 2
In advance, a concave portion for forming a shelf and a concave portion for subsequently forming a pole column are provided in advance.

Next, a flameproof plate which covers the ears of the electrode plate group 1 with a certain gap from the mold 2 is installed as shown in FIGS. 1 and 2. Further, a rod-shaped lead 4 holding a predetermined amount necessary for forming a shelf and a pole is abutted and supplied between the mold 2 and the flameproof plate 3.

Therefore, the rod-shaped lead 4 is continuously melted by a gas flame or an arc flame generated from the heat source device 5 and is poured into the mold 2 to continuously form shelves and poles. At this time, the gas flame or the arc flame not only melts the rod-shaped lead 4, but also acts on the tip of the ear of the electrode plate group 1 through the gap between the flameproof plate 3 and the die 2 to melt the tip of the ear, It can be integrated with the lead forming part to form a complete shelf. Further, since the flameproof plate 3 completely covers the portion other than the ear portion for melting, there is no cause of the generation of scratches due to the melted portion of the ear.

Further, if it is cooled and solidified, a shelf and a pole column having a predetermined shape are formed in the mold 2. Therefore, by separating this from the mold, an electrode plate group including the shelf and the pole column is formed. Is completed. This cycle of melting / injection / coagulation is active because it possesses the energy source itself, and the fusion of the electrode plate ears and the shelf can be obtained in a very short time and with high reliability.

Effects of the Invention As described above, according to the present invention, the following effects are obtained.

(1) By changing the shape of the concave portion of the mold, it is possible to form shelves and pole columns of any shape, and since pole columns can be formed without the use of pre-cast pole columns, pole columns can be formed. It is not necessary to manufacture the same, supply pole poles, or simultaneously weld the pole ears and pole poles.

(2) The process of fusing the electrode plate ears and the shelves is continuous rather than intermittent, and highly reliable fusion can be obtained in a short time.
Therefore, it does not require a flux such as a surfactant or a reducing solvent, and has high productivity.

(3) The comb-teeth mold is not necessary, and the positional accuracy of the electrode plate ears need only be ensured so that it can be inserted into the mold recess, which simplifies the equipment body.

Therefore, the conventional "burning method" and "cast-on method"
It is a solution to all of the drawbacks of (1) and its industrial value is extremely large.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing an embodiment of the present invention, FIG. 2 is an enlarged view of the welded portion of FIG. 1, FIG. 3 is a schematic view showing a conventional burning method, and FIG. 4 is a conventional cast. It is a schematic diagram showing an ON method. 1 ... Electrode plate group, 2 ... Mold, 3 ... Flameproof plate, 4 ... Rod-shaped lead, 5 ... Heat source device that emits flame.

Claims (1)

(57) [Claims] 1. A mold provided with recesses for forming shelves and poles in advance, the electrode plate group is tilted and inverted, and its ears are inserted into the mold, and the ears are provided with a constant gap. A bar-shaped lead for forming a shelf and a pole is installed by installing a flameproof plate that is provided and covered.
After abutting against the flameproof plate and supplying it onto the mold, the rod-shaped lead is melted by a gas flame or arc flame and injected into the mold, and at the same time, a part of the electrode plate ear is caused by the gas flame or arc flame. A method of manufacturing a lead storage battery, characterized in that an electrode plate group having a shelf and a pole is made all at once by melting and melting and solidifying.