JPH0218943B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a method of manufacturing a lead-acid battery plate having a foot made of synthetic resin.

[Prior Art] Generally, when a lead-acid battery is repeatedly charged and discharged, the active material of the electrode plate (particularly the anode plate) gradually falls off the grid and settles on the bottom of the battery case. Therefore,
When the active material that settles at the bottom of the battery case accumulates and reaches the bottom surface of the electrode plate group, the anode plate and the cathode plate are short-circuited, reducing the discharge voltage and shortening the battery life.

In order to solve this drawback, conventionally, as shown in FIG. The lattice body 1 is formed by casting an alloy and cutting the connecting parts of the respective leg parts 2. Next, each grid body 1 was positioned and arranged in a predetermined mold (not shown), and the periphery of the outer frame of the grid body 1 was molded with an insulating synthetic resin to insulate the foot portions 2.

[Problems to be Solved by the Invention] This type of manufacturing method described above involves the steps of casting the grid member 3, cutting the grid into individual grids, and cutting the insulating synthetic resin into individual grids. It is necessary to perform molding work around the external frame portion, which poses a problem in that it requires a large number of man-hours and becomes expensive.

An object of the present invention is to propose a method for manufacturing electrode plates for lead-acid batteries that can reduce the number of man-hours and manufacture inexpensive electrode plates.

[Means for solving the problems] The present invention is illustrated in FIGS. 1 to 3 showing an embodiment thereof.
To explain with reference to the figure, a lattice structure member 3 has a shape in which two lattice bodies 1 are interconnected at their respective legs 7.
is cast by pouring lead hot water through the sprue of a lattice casting mold.
A method for manufacturing a lead-acid battery plate by filling the lattice portion of a lattice component 3 with an active material, in which the electrode plate is manufactured from a synthetic resin having heat resistance, acid resistance, and electrical insulation properties. The foot forming block 4 is positioned between each of the two lattice molds in the lattice casting mold, and then lead water is injected from the sprue of the lattice casting mold to form the foot. The block 4 forms the grid member 3 so that the two grid members 1 can be electrically insulated from each other.

[Function] As described above, after positioning and arranging the preformed foot forming block 4 between the mold parts of the lattice bodies on both sides in the lattice body casting mold, lead water is poured into the lattice body casting mold. to form the lattice structure member 3, and then,
When each grid body is filled with an active material and the foot forming block 4 is electrically insulated from the grid bodies 1 on both sides, a predetermined position is cut to form an electrode plate. There is no need for a complicated synthetic resin forming mold used in a manufacturing method in which the periphery of the frame is molded with an insulating synthetic resin, and an inexpensive electrode plate can be manufactured by reducing the number of man-hours.

[Examples] Hereinafter, the present invention will be described in detail based on illustrated examples.

The manufacturing method of the present invention will be explained with reference to FIGS. 1 to 4. First, the heat resistance and
Synthetic resins with acid resistance and electrical insulation properties (e.g.
A leg forming block 4 made of thermoplastic resin such as epoxy resin is formed in advance. This foot forming block 4 has a plurality of recesses 5 opening on both sides with the bottom 5a placed back to back. Next, the foot forming block 4 is positioned between the mold parts of the lattice body 1 on both sides in a lattice casting mold (not shown), and then lead water is injected from the sprue of the lattice casting mold to form the foot. The lattice component 3 is formed by forming the block 4 for forming the leg part and the lattice part 1a flush with each other, and by allowing the block 4 for forming the foot part to electrically insulate the lattice bodies 1 on both sides from each other. The lattice portions 1a of the lattice component 3 thus formed are filled with an active material (not shown), and finally, the cutting portions 6 (dotted chain lines) of the foot forming blocks 4 of the lattice component 3 are cut. This forms a plate having electrically insulated legs 7.

The electrode plate manufactured by the above-mentioned manufacturing method of the present invention can sufficiently insulate the foot portion 7, and moreover, it can be manufactured using the conventional manufacturing method of molding an insulating synthetic resin around the outer frame of the grid body. There is no need for a complicated mold for forming synthetic resin, and the number of man-hours can be reduced to provide an inexpensive electrode plate.

In the above embodiment, a plurality of recesses 5 were provided on each grid body 1 side of the foot forming block 4, but the present invention is not limited to this, and as shown in FIG. One recess 5 may be provided on each side of the body 1.

[Effects of the Invention] As described above, according to the present invention, after the preformed foot forming block is positioned between the mold parts of the lattice bodies on both sides in the lattice body casting mold, the lattice body casting mold is Pour lead hot water into the base to form grid body constituent members, and then fill each grid body with an active material and cut the legs forming block at a predetermined position, electrically insulating the grid bodies on both sides. Since the electrode plates are formed using the conventional method of molding the outer frame of the lattice body with insulating synthetic resin, there is no need for a complicated mold for forming the synthetic resin.
Further, there is an advantage that an inexpensive electrode plate can be manufactured by reducing the number of man-hours.

[Brief explanation of drawings]

Fig. 1 is a plan view of a lattice component manufactured by the manufacturing method of the present invention, Fig. 2 is an enlarged view of the vicinity of the foot forming block in Fig. 1, and Fig. 3 is a cross section taken along the line - 4 and 5 are perspective views of the foot forming block, respectively, and FIG. 6 is a plan view of the lattice component manufactured by the conventional manufacturing method. 1... Lattice body, 3... Lattice body constituent member, 4...
Foot formation block, 7...foot.

Claims (1)

[Claims] 1. A lattice component in the form of two lattice bodies interconnected at each foot is cast by pouring lead hot water through the sprue of a lattice casting mold, and the lattice component is In a method for manufacturing an electrode plate for a lead-acid battery in which a grid part is filled with an active material to produce an electrode plate, a leg forming block made of a synthetic resin having heat resistance, acid resistance, and electrical insulation properties is placed in the grid body casting mold. The two lattice bodies are positioned between the mold parts of the lattice body, and then lead water is injected from the sprue of the lattice body casting mold to mutually bond the two lattice bodies with the foot forming block. 1. A method of manufacturing a lead-acid battery plate, comprising forming a grid member so as to be electrically insulated.