JPS5978458A - Manufacture of plate for lead-acid battery - Google Patents

Abstract

PURPOSE:To manufacture a plate grid with a high dimensional accuracy by using a current collecting part and a hole part formed with a high dimensional accuracy as a standard for positioning. CONSTITUTION:A long and narrow lead or lead alloy strip 10 in which current collecting parts 141-146 and holes 15 are formed with a high accuracy becomes a plate grid 19 by forming nets on the both sides of its center line 18 and it is fed to an active material paste filling equipment 20. First, the grid 19 is fed to a rotating drum 22 which has projections 21 at equal spaces with those of holes 15 and the position of the grid 19 is determined by projections 21. Then the grid 19 passes through the space between the lower surface of a hopper 24 and the upper surface of a filling belt 23 to fill an active material paste. Thereby, a plate 25 is obtained and it is fed to a rotating drum 22' having projections 21' at equal spaces with those of holes 15. By positioning the grid 19 and the plate 25 with a high accuracy, positioning in an active material filling process is made accurately.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for manufacturing electrode plates for lead-acid batteries, and in particular to improving the dimensional accuracy of grid bodies for electrode plates when continuously processing elongated strips of lead or lead alloy. It is something.

Conventionally, a so-called cast grid, which is made by pouring molten lead or a lead alloy into a mold, has been used as an electrode grid for lead-acid batteries. On the other hand, in recent years, a method for continuously producing electrode grids by mechanically processing elongated lead or lead alloy strips has been developed and is being put into practical use, but this method has good precision during processing. This will not only cause trouble during the subsequent battery assembly process (
``There are various problems such as insufficient heavy oil.

The present invention aims to solve the above-mentioned problems and manufacture a plate grid with high dimensional accuracy.

Next, one embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a sectional view showing a state in which an elongated strip of lead or a lead alloy is supplied to the current collector forming device for a plate grid according to the present invention. The above-mentioned part forming device consists of a die 11, a cutter 2, and a presser plate 3, and the presser plate 3 is a cutter 2.
It has a gap 5.5' to pass the blade 4.4' or Ct,
It is connected to the presser plate 3 by a spring 6 or the like, and operates in conjunction with this. The presser plate 3 also has a convex portion 7.7', and the opposing portion of the die 1 is provided with four portions 8.8'. The protrusion 7.7' has a slope 9 or is provided at its base with a vertical section 11 that is equal to or slightly larger than the thickness of the strip 10 of lead or lead alloy;
It is possible to stop with the gap barrier having the same height as 1 maintained between the holding plate 3 and the die 1. In this state, the elongated strip 10 of lead or lead alloy is fed so as to be pressed against the vertical portion 11 of the convex portion 7, and then the strip 10 of lead or lead alloy is fed so as to be pressed against the vertical portion 11 of the cutter 2.
The die 1 is also punched through the gap 12,12' provided in the die l. FIG. 2 is a plan view of the die 1.

Kites 13 are provided at both ends at slightly wider intervals 9 equal to the width of the elongated strip of lead or lead alloy, and the alignment in the direction perpendicular to the longitudinal direction of the elongated strip of lead or lead alloy must be strictly performed. . FIG. 3 is a sectional view showing a state in which the current collecting part forming device starts to form continuous current collecting parts. As shown in FIG. 1, the first collection 7I part +4 is formed by supplying an elongated strip 10 of lead or lead alloy.
1 and the second current collector +42 are the distances between the current collectors! '1
ffl B is sent to the right in the diagram twice the height.

Next, the presser plate 3 is lowered together with the cutter 2, and the convex portions 7 and 7' provided on the presser plate 3 first touch the strip IO.
The substantially flat surface 1 of the strip 10 is reached, and by the action of the slope 9, the position of the strip 10 is precisely fixed while being inserted into the already formed hole 15. Next, the flat portion 16 of the presser plate 3 or the unprocessed portion 17 of the strip 10 is pressed.

In addition, the spring 6 is compressed and the throat cartridge 2 is lowered, and the gap 12.12 provided between the blade 4.4' and the die 1 is
′, a new current collector is formed with a usage accuracy of 1′4<. Thereafter, the current collecting portion is formed with high dimensional accuracy by repeating the step E. FIG. 4 is a plan view of an elongated strip 10' of lead or lead alloy having a current collector formed in this manner. lead or lead alloy elongated strip)
Current collectors 141 to 14% and holes 15 are already formed at strictly equal intervals along the center line 18 of the IJ tube lO'. FIG. 5 shows an example in which the current collecting part and the hole part formed with high dimensional accuracy according to the present invention are used as H, ffi for positioning, for example, in the active material paste filling step f. The elongated strip I O' of lead or lead alloy in which the clusters and holes are formed with high dimensional accuracy is further formed with one net-like part on both the left and right sides of the center line 18, and becomes the electrode plate grid body 19. The force applied to the active material paste filling device 20 (first applied to the rotating drum 22 having protrusions 21 at intervals equal to the intervals of the holes 15 formed in the electrode plate grid body 19, The position of the plate lattice body 19 is determined.Next, it is guided to the filling belt 23 at 1.% and is filled with the active substance paste by passing through the gap between the lower surface of the hopper 24 and the -4 side of the filling belt 23. This becomes the electrode plate 25.One more plate 2
5 is applied to a rotating drum 22' provided with protrusions 21' at the same intervals as the holes 15. In this way, by aligning the electrode plate grid body 19 and the electrode plate 25 with high accuracy before and after the active material paste filling device 20, the alignment force (accurate Similar positioning can also be performed in the other steps.

As described above, according to the present invention, high dimensional accuracy is achieved in the formation of the current collecting portion when obtaining the grid body for the electrode plate by continuously processing a long and thin strip of lead or lead alloy. Not only can it be used, but it can also significantly improve the dimensional accuracy of machining in other processes, which in turn can prevent troubles in the heavy oil assembly process and reduce battery defects, which is of great industrial value. .

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a state in which an elongated strip of lead or lead alloy is supplied to a current collector forming device according to an embodiment of the present invention, and FIG. 2 is a plan view of a die in the same current collector forming device. FIG. 3 is a cross-sectional view showing a state in which current collectors are started to be formed continuously by the current collector forming device; FIG. 4 is a plan view of an elongated strip of lead or lead alloy on which current collectors are formed; FIG. 5 is a side view of an active material paste filling apparatus for obtaining an electrode plate by subjecting the electrode grid body formed according to the present invention to an active material paste filling process. 1 is a die, 2 is a cutter, 3 is a presser plate, 4.4' is a blade, 5.5' is a gap, 6 is a spring, 7.7' is a convex part, 8.8' is a concave part, 9 is a slope, 10 is lead or lead alloy) IJ knob, 11 is vertical part, 12.12'
is a void, 13 is a guide, 141 to 146 are current collectors, 1
5 is a hole part, 16 is a flat part, 17 is an unprocessed part, 18 is a center line, 19 is an electrode grid body, 20 is an active material paste filling device, 21.21' is a convex part, 22.22' is a Rotating drum, 23 is a filling belt, 24 is a hopper, 25 is an electrode plate Patent Applicant Figure 4 Figure 2

Claims (1)

[Claims] A lead-acid battery electrode in which a long and thin strip of lead or lead alloy is continuously processed to form a lattice body having a current collecting part and a net-like part, and the lattice body is filled with an active material paste and then cut into individual electrode plates. In the board manufacturing method, the above collection? The L portion is formed by removing an unnecessary portion as a hole portion before forming the mesh portion, and the hole portion formed with a predetermined dimensional accuracy is used as a reference for positioning in a subsequent process. Lead acid 7 characterized by
1i pond manufacturing method.