JPH0455415Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an improvement of an apparatus for manufacturing electrode plates for alkaline storage batteries by impregnating a sintered substrate with an active material.

(Prior Art) Conventionally, as a means of manufacturing the above-mentioned electrode plate, a series of manufacturing steps W as shown in FIG. Once again, there was a means to continuously manufacture plates. This series of manufacturing steps W includes impregnation of the sintered substrate with an active material, electrolytic reduction of the impregnated active material,
The washing and drying processes after the electrolytic reduction are performed in the order shown. Although not shown in the figure, as shown in Japanese Patent Application Laid-Open No. 53-72137, after impregnating the active material, heat treatment is performed to remove moisture from the active material to increase the reduction efficiency. ing.

In the above manufacturing process, in the substrate after the initial impregnation treatment, the pores of the substrate are impregnated with the active material, and an excess of the impregnating liquid is attached to the surface of the substrate. Conventionally, the process was moved to the electrolytic reduction process in this state. Therefore, the liquid agent adhering to the surface of the substrate is subjected to electrolytic reduction treatment and remains in the state of hydroxide (hereinafter referred to as substrate surface adhesion), and is then washed with water and dried. If the deposits deposited on the substrate surface fall off during the process, the satisfactorily progress of the impregnation action in the manufacturing process W of the next cycle is inhibited. Further, it is necessary to ultimately remove the deposits on the substrate surface and clean the electrode plate surface.

Therefore, as described in Japanese Utility Model Publication No. 55-46480, it was proposed to clean the surface of the substrate with water or diluted acid, etc. after impregnating the substrate with the active material and before performing the reduction treatment. .

(Problem that the invention aims to solve) However, when the surface of the substrate is cleaned with a cleaning liquid such as water or diluted acid, not only the surface of the substrate but also a part of the liquid impregnated inside the substrate is removed after cleaning. As a result, a problem arises in that the amount of active material filled decreases.

(Means for Solving the Problems) The configuration of the present invention for solving the above problems will be described below with reference to FIG. 1, which corresponds to an embodiment.

The present invention includes an impregnator 1 that impregnates a strip-shaped sintered substrate P with an active material, which is continuously fed in the length direction;
A heater 6 that heats the sintered substrate P after the impregnation treatment to release moisture in the active material impregnated into the sintered substrate P.
, an electrolytic reducer 2 that electrolytically reduces the active material impregnated into the sintered substrate P, and a sintered substrate that has undergone electrolytic reduction treatment.
The present invention aims to improve an apparatus for manufacturing electrode plates for alkaline storage batteries, which is equipped with a water washer 3 and a dryer 4 that wash PP with water and then dry it, and manufactures electrode plates by impregnating a sintered substrate P with an active material. In the present invention, an adhering liquid remover 5 is used which removes only the impregnating liquid adhering to the surface of the sintered substrate P after the impregnation process.

(Function of the device) According to the above configuration, since only the impregnating liquid excessively adhered to the surface of the substrate P after the impregnation process is removed by the adhered liquid remover 5, part of the active material inside the sintered substrate is removed. It is possible to suppress the active material from being reduced due to the removal of the active material. As a result, high-quality electrode plates for alkaline storage batteries can be easily manufactured. The manufacturing apparatus of the present invention can be used for manufacturing both anode plates and cathode plates.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In Fig. 1, 1 is an impregnator containing an impregnating liquid 1a, and 2 and 2' are first and second electrolyzers containing electrodes 2b and 2b', respectively, and containing electrolytic reduction liquids 2a and 2a'. A reducing device, 3 a washing device containing water 3a, and 4 a drying device are arranged in the order shown in the figure. R is a plurality of rollers disposed at predetermined positions inside and outside of each of these processing devices, and P is stretched over these rollers R in a meandering manner to operate the impregnation device 1, electrolytic reducer 2, 2', This is a band-shaped sintered substrate that is transferred in the direction of arrow Y through a washer 3 and a dryer 4 in sequence. 5 is the substrate P coming out of the impregnator 1
A liquid draining roller serving as an attached liquid remover is provided to sandwich the substrate P from both sides, and heating rollers 6 are serving as a heater provided on both sides of the substrate P that has come out from the liquid draining roller. The temperature of this heating roller is suitably 100 to 150°C above the boiling point of water, and in this example it was set to 120°C.

In the above manufacturing apparatus, a strip-shaped sintered substrate P
In the process in which the substrate P is continuously transferred as shown in the figure, the substrate P
The active material is impregnated into the pores. After this impregnation process, the substrate P is passed over a liquid draining roller 5 to remove excess liquid agent 1a attached to the surface of the substrate P. Note that the liquid agent 1 impregnated inside the substrate P
a is not removed by the liquid draining roller 5. The substrate P after this liquid agent has been removed is heated by the heating roller 6, and the moisture in the active material impregnated into the pores of the substrate P is evaporated. By evaporating moisture in this way, the subsequent electrolytic reduction treatment can be performed satisfactorily. Next, this substrate P is immersed in the liquid agent 2a so as to face the electrode 2b of the first electrolytic reducer 2, and the active material impregnated into the substrate P is electrolytically reduced. The substrate P that has been subjected to the electrolytic reduction process by the first electrolytic reducer 2 is transferred to the second electrolytic reducer 2' and is subjected to the electrolytic reduction process again. in this way,
The reason for processing through two electrolytic reducers 2 and 2' is that the concentration of the liquid agent 2a in the first electrolytic reducer 2 gradually becomes diluted due to continuous electrolytic reduction treatment of the long substrate P, and the processing capacity weakens. This is to compensate for the The substrate P that has been subjected to the electrolytic reduction treatment as described above is
After being transferred to a water washer 3 and washed clean with water, it is transferred to a dryer 4 and dried to obtain an electrode plate material P'. Thereafter, this electrode plate material P' is sequentially sent to a plurality of predetermined devices configured similarly to the device shown in FIG. A board is manufactured. According to the manufacturing apparatus of this example, the amount of active material impregnated into the electrode plate was improved by 5 to 10% compared to the case using a conventional manufacturing apparatus.

In the above embodiment, the liquid removing roller 5 is used as the adhered liquid remover, but the adhered liquid remover may be any suitable removing means that wipes off the liquid only from the surface of the substrate P.

Further, in the above embodiment, the heating roller 6 was used as the heater, but the heater used in the present invention may be any suitable heating element facing both sides of the substrate P, and is not limited to the heating roller described above. isn't it.

(Effect of the invention) As described above, according to the invention, since the adhering liquid remover removes only the impregnating liquid adhering to the surface of the sintered substrate after the impregnation process, It is possible to suppress a decrease in active material due to part of the liquid agent being removed. Thereby, high-quality electrode plates for alkaline storage batteries can be easily manufactured.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional view showing an outline of an embodiment of the present invention, and FIG. 2 is a block diagram showing a series of manufacturing steps for an electrode plate for an alkaline storage battery in order of process. DESCRIPTION OF SYMBOLS 1... Impregnator, 2... Electrolytic reducer, 3... Water washer, 4... Dryer, 5... Liquid draining roller as an attached liquid remover, 6... Heat roller as a heater, P... ...Sintered substrate, P'...Pole plate material.

Claims (1)

[Claims for Utility Model Registration] An impregnator for impregnating a strip-shaped sintered substrate with an active material that is continuously fed in the length direction, and heating the sintered substrate after the impregnation treatment to sinter the substrate. a heater for dissipating moisture in the active material impregnated into the substrate; an electrolytic reducer for electrolytically reducing the active material impregnated in the sintered substrate; and washing the sintered substrate that has undergone the electrolytic reduction treatment with water. In an apparatus for manufacturing electrode plates for alkaline storage batteries, which is equipped with a water washer and a dryer for later drying, and which manufactures electrode plates by impregnating the sintered substrate with an active material, the surface of the sintered substrate after the impregnation treatment 1. An apparatus for manufacturing an electrode plate for an alkaline storage battery, comprising an adhesion liquid remover that removes only an impregnation liquid adhering to the electrode plate.