JPH03179667A - Manufacture of expanded grid for storage battery - Google Patents

Abstract

PURPOSE:To manufacture a plate for a storage battery having no strain and no deformation in a non-expanded part and high dimensional accuracy by punching a thin plate with a lug of a grid and both ends of the thin plate left at the expanding start end. CONSTITUTION:A lead thin plate (a) in which a grid lug (b) and both ends (c) are formed is fed to an expanding process. The lead thin plate (a) is fed with a feeding interval variable roll 5 so as to match punching intervals in a punching part (d) and also match notches in an expanding working part (e). Expanding working is conducted so that the lead thin plate (a) is expanded zigzag from the next of the punched part (d) by an expanding upper blade 6 and an expanding lower blade 7. Deformation of a plate is restrained, dimensional accuracy is increased, and stress in a non-expanded part caused by lug formation is decreased. A high performance battery is obtained at a low cost.

Description

[Detailed description of the invention] The appearance of life and the brightness of life The present invention relates to a method of manufacturing a storage battery electrode plate.

There are two methods of manufacturing the lattice bodies of paste-type plates for lead-occupied batteries: casting methods and mechanical methods such as expanding and punching.

Among these methods, the method using casting has the disadvantage of poor productivity, and the method using punching has the disadvantage of generating a large amount of punching waste. On the other hand, since the expanding method does not have these drawbacks, it is thought that the number of expanded lattice bodies will increase more and more in the future.

Conventionally, when a solid part is left for ear formation during expand processing, the stretched part cannot be formed during the initial driving, resulting in distortion and deformation of the solid part, resulting in a connection part (hereinafter referred to as a node part). This has caused problems such as breakage and a decrease in strength. For this reason, conventional techniques have had drawbacks such as having to shorten the solid portion and restricting the design and manufacturing conditions of the electrode plate.

The present invention was made in view of the above-mentioned drawbacks of the conventional technology.
The purpose is to manufacture storage battery plates with high dimensional accuracy without distortion or deformation in the solid parts, and furthermore, to provide a storage battery with good performance.

The present invention is characterized in that when a thin plate of lead or lead alloy is expanded to form a mesh grid, the edges of the grid and both ends of the thin plate are punched out at the starting end of the expanding process. It is something to do.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be explained below with reference to drawings showing one embodiment thereof.

That is, FIG. 1 is a schematic perspective view showing the punching process in one embodiment of the present invention, and FIG. 2 is a perspective view of the thin lead plate after being punched in FIG. 1. Also, Figure 3 shows the second
It is a schematic perspective view which shows the expansion process which performs expansion using the lead thin plate of a figure.

That is, in FIG. 1, a thin lead plate a previously wound around a roll 1 is first fed intermittently by a constant pitch feed roll 2 at fixed pinch intervals of one electrode plate at a time, and then is fed by a punching cutter 3 and a lower blade 4. The lattice body ears are punched out leaving both ends C intact. In this way, the thin lead plate a is made as shown in Figure 2.
In the subsequent expansion step, the material is expanded and punched out at lengths that can be used as electrode plates.

Subsequently, the thin lead plate a on which the lattice ears and both ends C have been formed is sent to an expanding process as shown in FIG. In this process, the lead FIVi,a is fed by the variable feed roll 5 at a pitch that matches the width of the punched portion d, and when processing the expanded portion e, the lead FIVi,a is fed at a pitch that matches the width of the punched portion d. The expanded upper blade 6 and expanded lower blade 7 cause the thin lead plate a to be
The expanding process is performed in a staggered manner from the punched part d.

In other words, the expanding upper blade 6' moves downward, upward, and horizontally by half a pitch of the width of the blade in accordance with the pitch feed corresponding to the increment width of the thin lead plate a, and then descends when the next thin lead plate a is fed.
Expanding is performed by ascending and horizontally returning by half a pitch of the width of the blade.

Although only one embodiment of the present invention has been described in detail above, various embodiments of the present invention can be considered without departing from the spirit thereof.

For example, in the above embodiment, the feed rate variable roll 5 was used, but instead of this, a fixed pitch feed roll may be used, and the expanding upper blade 6 may be stopped while the lattice ears are being fed, or the expanding lower blade may be released. is also one method.

Furthermore, in the above embodiment, the feeding direction of the thin lead plate a and the direction of the expanding blade are perpendicular to each other, but in addition to this, as shown in JP-A-50-63443, It is also possible to apply it to a blade whose direction is parallel to that of the blade.

As mentioned above, the present invention can provide an inexpensive, high-performance battery by suppressing changes in the shape of the electrode plate, improving dimensional accuracy, and reducing strain in the solid part for forming ears. The industrial value is extremely large.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view showing the punching process in one embodiment of the present invention, and FIG. 2 is a perspective view of the thin lead plate after being punched in FIG. 1. Further, FIG. 3 is a schematic perspective view showing the process of expanding using the thin lead plate shown in FIG. 2. 1-・-1-- Roll 2 ・・・・ Constant pitch feed roll 3 ・−・− Punching cutter 4 ・・−・− Lower blade 5 ・・・・ Feed amount variable roll 6 ・−・・ Expand Upper blade 7 ・--Two-kiss band lower blade a --------1 Thin lead plate b --------1 Lattice body ear c ---------... Both ends d ----1 Punching Part e -・-1--- Expanded part outlet hole Yuasa Battery Co., Ltd.

Claims (1)

[Claims] A method for manufacturing an expanded lattice for a storage battery, characterized in that when expanding a thin plate of lead or lead alloy to form a mesh lattice, the edges of the lattice and both ends of the thin plate are punched out at the starting end of the expanding process. .