JPS58163154A - Manufacture of electrode plate for lead accumulator - Google Patents

Abstract

PURPOSE:To certainly prevent formation of vacant space and obtain an electrode plate having the stabilized quality by closely filling the near center part of a lattice body at first and then completely filling the both edge parts of the lattice body, when the expansion-type lattice body is filled with activating substance in paste form. CONSTITUTION:An expanded-type lattice body 5 worked continuously is transferred on an conveyor belt 13, applied with a thin undersurface sheet 7 on the undersurface, and the near center part of the lattice body 5 is closely filled with the activating substance 4 in paste form during the time when the lattice body 5 passes through the main hopper 2 of a coating machine 1. Then, the incompletely filled part 11 which are present in the body edge parts of the lattice body 5 is filled with the activating substance 4 completely by a sub hopper 3. Then, a thin uppersurface sheet 8 is applied onto the uppersurface of the activating substance 4 in succession, and said activating substance 4 is dried in an oven 9, and when then cut by a punching machine 12, and thus a complete electrode plate 10 can be obtained.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is a method of applying paste to a lattice body (referred to as an expanded lattice body) by so-called expanded band processing, in which a strip of lead alloy is cut and then expanded to form a continuous mesh. The present invention relates to a filling method when applying active materials.

In general, in the expanded type lattice A, the squares C formed by the lattice bones B are diamond-shaped as shown in Fig. 5, so the squares are rectangular and the number of squares is relatively small like in the cast type lattice. Compared to the case where a large amount of active material is formed, the shrinkage of the active material due to drying after kneading is 0°.Especially when the packing density at both ends of the lattice body is low, the lattice bones P and active material are A gap E is likely to occur between the material and the material, and since thin paper is pasted on both sides of the electrode plate immediately after coating, it is impossible to detect this type of gap in advance, and therefore high-speed operation is not possible. There was a problem in that a large amount of defective products were produced instantaneously using a kneading machine.

The present invention solves the above problems by adding an ingenuity to the active material filling method, and when filling an expanded type lattice with a paste-like active material, the approximately central part of the lattice is first filled. It is characterized by dense packing and then completely filling both ends of the grid.

The present invention will be explained below based on one embodiment.

First of all, in Figs. 1 to 4, 1 is a coating machine, 2 and a filter are a main hopper and a sub-bottle for filling the paste active material 4 provided in the coating machine 1, and 5 is a continuously formed extract. Band-type lattice body, 6 lattice ribs, 7 thin paper for the lower surface, 8 - thin paper for drawing, 9 oven, 10 finished cut electrode plate, 11 incompletely filled parts at both ends of the lattice body.] 2 is a punching machine, and 16 is a conveyor.

Next, the manufacturing method of the electrode plate according to the present invention will be described in detail. First, the continuously processed expanded grid body 5 is conveyed by the conveyor 1 while a thin paper 7 for the lower surface is applied to the lower surface of the expanded grid body 5, and then kneaded. Pace while passing through main hopper 2 of coating machine 1!・
The active material 4 is densely packed approximately in the center of the lattice body 5 (see FIG. 2). Next, the active material 4 is completely filled into the incompletely filled portions 11 existing at both ends of the grid body 5 using the sub-humper 6 (see FIG. 6). Subsequently, a top thin paper 8 is attached to the top surface of the active material 4, and after being dried in an oven 9,
After punching] 2 is cut to form a completed electrode plate 10 as shown in FIG.

1 As diagonally above, when filling an expanded type lattice with a paste-like active material, the present invention uses a plurality of hoppers to first densely fill approximately the central part of the lattice, and then fill the incompletely filled parts. Since this method completely fills both ends of the lattice body, where gaps are likely to occur, it is possible to reliably prevent the occurrence of crevices, resulting in a plate of stable quality with a predetermined capacity and service life. This is an extremely effective method for producing electrode plates for lead-acid batteries using band-type grids.

[Brief explanation of drawings]

FIG. 1 is a perspective view of the main parts showing an example of a manufacturing apparatus used for carrying out the method of the present invention, and FIG. 2 is a plan view of the main parts showing the state immediately after the main hopper densely fills the approximate center of the lattice body. , Fig. 6 is a plan view of the main part showing the state in which both ends of the grid are completely filled by the sub-hopper, Fig. 4 is a partially cutaway front view of the completed electrode plate obtained by the method of the present invention, and Fig. 5 is an extract. FIG. 6 is a plan view of the main part showing the general grid shape of a band type lattice body, and FIG. 6 is a plan view of the main part of the electrode plate obtained by the conventional method. 4...Active material 5...Lattice applicant Yuasa Battery Co., Ltd.

Claims (1)

[Claims] 1) When filling an expanded type lattice with a paste-like active material, first densely fill approximately the center of the lattice, and then completely fill both ends of the lattice. Characteristic method for manufacturing electrode plates for lead-acid batteries. 2) The method for manufacturing a lead-acid battery plate according to claim 1, characterized in that the main hopper is first filled, and then the sub-hopper is filled.