JPH0566715B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a method for manufacturing a sintered electrode plate for an alkaline storage battery, in which a sintered substrate is filled with an active material.

[Prior Art] Generally, in a sintered electrode plate for an alkaline storage battery, as shown in FIG. ,
Next, electrolytic treatment is performed in electrolysis step 2. The sintered substrate subjected to electrolytic treatment in this way is then subjected to water washing step 3.
After washing with water, the sintered substrate is dried in a drying step 4. Through these impregnation step 1, electrolysis step 2, water washing step 3, and drying step 4, the sintered substrate is subjected to one active material filling unit step 5. Therefore, in order to fill the sintered substrate with a sufficient amount of active material, the active material filling unit process 5 must be performed several times.

Therefore, conventionally, in order to repeat the active material filling unit process 5 several times, the active material filling unit process 5 is carried out along a linear production line 6 as shown in FIG.
This process was repeated to sequentially fill the sintered substrate with active material. In addition, in each of these steps 5, the sintered substrate is immersed in each of the active material salt solution bath, electrolytic bath, and water washing bath. In this case, as shown in FIG. Band-shaped sintered substrate 8
was bent vertically and inserted into the corresponding tank 9.

[Problems to be Solved by the Present Invention] However, in the conventional manufacturing method described above, since the manufacturing line 6 in which the active material filling unit process 5 is repeated is linear, each processing liquid tank and drying device in each process 5 are Therefore, the conditions such as the temperature and concentration of the active material salt solution, the conditions of electrolytic treatment, the conditions such as the amount of water in washing treatment, and the conditions of drying treatment must be adjusted individually. There was a problem that the number of control devices needed to be controlled was increased, and the manufacturing equipment became expensive. Moreover, there was a problem in that the working conditions in each process were likely to differ, making it difficult to effectively control quality.

An object of the present invention is to be able to construct a manufacturing device at low cost;
Moreover, it is an object of the present invention to propose a method for manufacturing sintered electrode plates for alkaline storage batteries that allows for effective quality control.

[Means for solving the problems] The present invention is illustrated in FIGS. 1 and 2 showing one embodiment thereof.
To explain with reference to the figure, on the strip-shaped sintered substrate 8,
The active material filling unit step 5 is repeated several times along the production line 6, in which the active material is impregnated with a salt solution, sequentially electrolyzed, washed with water, and then dried. A method for manufacturing a sintered substrate for an alkaline storage battery, in which a sintered substrate 8 is filled with an active material by repeatedly carrying out material filling operations,
In the present invention, the production line 6 is made to meander, and the active material filling operation by each active material filling unit process 5 is repeated along the meandering production line 6, and the parallel line portions of the meandering production line 6 are The same processes arranged in orthogonal directions are carried out using a shared device, and the sintered substrate 8 is sent to each active material filling unit process 5 with its plate surface 8a erected.

[Operation] By doing as described above, the active material filling operation according to the active material filling unit process 5 is repeatedly performed on the sintered substrate 8 along the meandering production line 6, and the active material filling operation is repeated at right angles to the parallel line portion of the meandering production line 6. Since the same processes are performed in the same direction, each process is performed by a shared device, the manufacturing device can be constructed at low cost with fewer control devices than in the past. Since the processing is carried out using shared equipment, the working conditions are the same and quality control can be carried out effectively.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

First, the state in which the strip-shaped sintered substrate is inserted into the processing liquid tank in each processing step of the manufacturing method of the present invention will be explained. As shown in FIG. 2, two vertically extending slits 13 are formed in a pair of mutually opposing side walls 12 of the processing liquid tank 11, and each slit 1
The sintered substrate 3 is fed in either direction of the arrow through a band-shaped sintered substrate 8 having a raised plate surface 8a. In this case, the member constituting the slit 13 is an elastic body 14 such as rubber fitted into the side wall 12. The number of slits 13 formed in the processing liquid tank 11 is determined by the number of sintered substrates 8 to be fed, and the number is arbitrary.

Next, a method of filling the active material into the strip-shaped sintered substrate 8, which is fed with the plate surface 8a erected, will be explained. In the manufacturing method of the present invention, as shown in FIG. 1, the manufacturing line 6 is arranged in a meandering manner, and each of the outgoing line portion 6A and the incoming line portion 6B of this meandering manufacturing line 6 is arranged in a meandering manner. are arranged parallel to each other. In this production line 6, the active material filling operation in an active material filling unit process 5 consisting of an impregnation process 1, an electrolysis process 2, a water washing process 3, and a drying process 4 is performed several times in succession. Therefore,
In such a production line 6, in order to fill the sintered substrate 8 with the active material, first, in the impregnation step 1, the strip-shaped sintered substrate 8 is inserted into the active material salt solution bath 21. (At this time, when forming the anode plate, the sintered substrate 8 is immersed in a saturated solution of nickel nitrate; when forming the cathode plate, the sintered substrate 8 is immersed in a saturated solution of cadmium nitrate or cadmium chloride. .)
Next, the sintered substrate 8 is inserted into the electrolytic bath 22 of the electrolytic step 2. (At this time, the anode plate is subjected to electrolytic oxidation treatment, and the cathode plate is subjected to electrolytic reduction treatment.) The electrolytically treated sintered substrate 8 is then inserted into the washing tank 23 of the washing step 3 and washed with water. The sintered substrate 8 that has been washed with water is dried by the drying device 24 in the drying step 4. In this way, when the first active material filling unit step 5 is completed, the active material filling operation is performed several times in succession in the subsequent active material filling unit step 5, and the active material filling operation for the sintered substrate 8 is completed. .

At this time, the feeding direction of the sintered substrate 8 is opposite to the feeding direction in the outgoing line portion 6A and that in the returning line portion 6B. It will be located on a straight line orthogonal to the portion 6B. Therefore, each electrolytic step 2 in each active material filling unit step 5 is performed in the electrolytic cell 22 as one shared device. In this case, the number of slits 13 through which the sintered substrate 8 is passed is set in the electrolytic cell 22 in accordance with the number of active material filling unit processes 5. Commonly used for turn portions 6C of each sintered substrate 8 at the boundary from the outbound line portion 6A to the return line portion 6B, and turn portions 6D of each sintered substrate 8 at the boundary from the inbound line portion 6B to the outbound line portion 6A. Drying devices 24, 24 are arranged to perform the drying process 4. In this way, the sintered substrate 8 is fed in a meandering manner in order from the forward line portion 6A to the backward line portion 6B, and the active material filling operation in the active material filling unit process 5 is performed a predetermined number of times.

In the above embodiment, since the slits 13 are formed vertically in each processing liquid tank, the processing liquid may spill out to the outside. It is preferable to return the processing liquid to the processing liquid tank by, for example,

In the above embodiment, each electrolytic process 2 on the meandering production line 6 is carried out in one shared electrolytic tank 22, and each drying process 4 is carried out in two shared apparatuses. However, the present invention is not limited to this, and the treatment in each impregnation step 1 on the production line 6 is carried out in one shared device. The water washing step 3 may be carried out in a salt solution tank, and the processing in each washing step 3 may be carried out in two washing tanks serving as shared equipment, and the direction perpendicular to the parallel line portion of the meandering production line 6. It is only necessary to use a shared device to carry out the same processes in the same manner.

[Effects of the Invention] As described above, according to the present invention, the active material filling operation in the active material filling unit process is repeatedly performed on the sintered substrate along the meandering production line, and Since the same processes arranged in orthogonal directions are performed by shared equipment, the manufacturing equipment can be constructed at low cost with fewer control devices than in the past, and the same process in each active material filling unit process Since the processing is carried out using shared equipment, the working conditions are the same and quality control can be carried out effectively.

[Brief explanation of drawings]

FIG. 1 is a schematic explanatory diagram of an apparatus for implementing the manufacturing method of the present invention, FIG. 2 is an explanatory diagram showing a state in which a sintered substrate is inserted into each treatment liquid tank in the manufacturing method of the present invention, and FIG. 3 and FIG. 4 are explanatory diagrams showing the conventional manufacturing method, respectively, and FIG. 5 is an explanatory diagram showing a state in which a sintered substrate is inserted into each treatment liquid tank in the conventional manufacturing method. 1...Impregnation process, 2...Electrolysis process, 3...Water washing process, 4...Drying process, 5...Active material filling unit process, 6...Production line, 6A, 6B...Parallel line portion (outward route) line part, return line part),
8... Strip-shaped sintered substrate, 8a... Plate surface of the strip-shaped sintered substrate.

Claims (1)

[Claims] 1. An impregnation step in which a strip-shaped sintered substrate is impregnated with a solution of a salt of an active material, and an electrolytic treatment is performed on the sintered substrate impregnated with a solution of a salt of an active material in the impregnation step. The active material filling process is carried out along the manufacturing line as an active material filling unit process including an electrolytic process, a washing process of washing the electrolytically treated sintered substrate with water, and a drying process of drying the sintered substrate after the washing process. A method for manufacturing a sintered substrate for an alkaline storage battery, in which the sintered substrate is filled with the active material by repeating the active material filling operation multiple times by repeating a unit process a plurality of times, the manufacturing line being meandered; The active material filling operation by each active material filling unit process is repeated along the line, and the processing by the same process in the direction orthogonal to the parallel line part of the meandering manufacturing line is performed using a shared device. and a method for manufacturing a sintered electrode plate for an alkaline storage battery, characterized in that the sintered substrate is sent to each of the active material filling unit processes with its plate surface erected.