JPS6231948A - Manufacture of sintered plate for alkaline storage battery - Google Patents

Abstract

PURPOSE:To reduce the investment in production facilities and effectively perform quality control by repeating filling an active material in a sintered plate with a zigzagged production line, and conducting a treatment in the process which are arranged so as to intersect perpendicularly to the parallel parts of the zigzagged production line by common equipment. CONSTITUTION:After completion of the first active material filling unit process, the following filling unit processes are repeated several times to finish active material filling job. A supply direction of a substrate 8 in a proceeding line 6A is opposite to that in a returning line 6B, and an electrolytic process 2 is arranged in a straight line perpendicularly intersecting to the lines 6A and 6B. The electrolytic process 2 in each active material filling unit process is conducted in an electrolytic bath 22 serving as common equipment. Therefore, the investment in production facilities are reduced, and quality control is effectively performed because the same treatment is conducted with common equipment.

Description

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

[Prior art 1] Generally, in sintered electrode plates for alkaline storage batteries, the third
As shown in the figure, a strip-shaped sintered substrate is impregnated with a solution of a salt of an active material in an impregnation step 1, and then electrolytically treated in an electrolysis step 2. The sintered substrate subjected to the electrolytic treatment as described above is then washed with water in a washing step 3, and then 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 intermediate step 5 must be performed several times.

Therefore, conventionally, the active material filling unit ■f! In order to repeat step 115 several times, as shown in FIG. 4, step 5 of filling the active material was repeated along the linear production line 6 to sequentially fill the sintered substrates with the active material. In addition, in each step 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. 5, a plurality of rollers 7 are used. Bend the strip-shaped sintered substrate 8 downward one time to form a corresponding tank 9.
It was inserted inside.

[Problem to be Solved by the Present Invention 1] However, in the above-mentioned conventional manufacturing method, since the manufacturing line 6 that repeatedly performs the active material filling unit process 5 is linear, the processing liquid tank and drying device of each T culm 5 are Therefore, the conditions such as the temperature and concentration of the active material salt solution, the electrolytic treatment conditions, the conditions such as hollowness in the water washing treatment, and the drying treatment conditions must be adjusted. Each of these needs to be controlled individually, resulting in a large number of control devices, which poses a problem in that the manufacturing equipment becomes expensive. Moreover, there is a problem in that the working conditions in each process tend to vary, making it difficult to effectively control quality.

The purpose of the present invention is to propose a method for manufacturing sintered electrode plates for alkaline storage batteries, which allows a manufacturing apparatus to be constructed at low cost and allows for effective quality control.

Means for Solving Problem E 1 The present invention will be explained with reference to FIGS. 1 and 2 showing one embodiment thereof. The active material filling operation is repeated by repeating the active material filling unit step 5 multiple times along the production line 6, in which the active material filling unit step 5 is impregnated with a solution, sequentially subjected to electrolytic treatment, washed with water, and then dried. This is a method for manufacturing a sintered substrate for an alkaline storage battery, in which a sintered substrate 8 is filled with an active material using a sintered substrate. The active material filling operation in the active material filling unit process 5 is repeated, and the same process is performed in a direction perpendicular to the parallel line portion of the meandering production line 6 using a shared device.
(2) The sintered substrate B is fed into each active material filling unit culm 5 with its plate surface 8a erected.

[Function 1] By doing as described above, the active material filling operation by the active material filling medium T culm 5 is carried out along the meandering production line 6 to the sintered substrate 8.
Since the same processes are carried out repeatedly and lined up perpendicularly to the parallel line portions of the meandering production line 6 using shared equipment, fewer control devices are required than in the past, making the manufacturing equipment cheaper. Furthermore, since the same process in each active material filling unit process 5 is performed using a shared device, the working conditions are the same and quality control can be performed effectively.

[Example] Embodiments of the present invention will be described in detail below with reference to the drawings.

First, the state in which a strip-shaped sintered substrate is inserted into a treatment liquid tank in each process of carrying out the manufacturing method of the present invention will be explained.

As shown in FIG. 2, two slits 13 each extend vertically in a pair of mutually opposing side walls 12 of the processing liquid tank 11.
is formed, and the sintered substrate is fed in the direction of the arrow through the strip-shaped sintered substrate 8 with the plate surface 8a raised up in each slit 13. In this case, slit 13
The member constituting the is made of an elastic body 14 such as rubber fitted into the side v12. The number of slits 13 formed in the processing liquid tank 11 is determined by the number of 80 sintered substrates to be fed, and the number is arbitrary.

Next, the board? A method of filling the active material into the strip-shaped sintered substrate 8 that is fed by standing up the fii 8a will be described. 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 outgoing line of this meandering manufacturing line 6 = 6- Portion 6A and incoming line The portions 6B are arranged parallel to each other. In this production line 6, impregnation step 1, electrolytic T
The active material filling operation in the active material filling unit step 5 consisting of the culm 2, water washing step 3, and drying T culm 4 is performed several times in succession. Therefore, in order to fill the sintered substrate 8 with the active material in this production line 6, first, in the impregnation step 1, the strip-shaped sintered substrate 8 is inserted into the active material salt solution bath 21 and covered. (At this time, when molding the anode plate, the sintered substrate 8 is immersed in a saturated solution of nickel nitrate, and when molding and covering the cathode plate, the sintered substrate 8 is immersed in a saturated solution of cadmium nitrate or cadmium chloride. ) Next, the electrolytic bath 22 of the electrolysis step 2 is heated with 11! l Insert the board 8. (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 washing 1-culm 3 and washed with water. The sintered substrate 8 that has been washed with water is dried] Step 2
The drying operation is performed by a drying device 24. In this way, the active material is charged for the first time. When the Mre mill 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,
Of the processing steps performed in sequence, the electrolysis step 2 is located on a straight line that intersects with the outgoing line portion 6A and the returning line portion 6B. Therefore, each electrolytic process 2 in each active material charge VJ4 T culm 5 is performed in the electrolytic cell 22 as one shared device. In this case, in the electrolytic bath 22, the number of slits 13 through which the sintered substrate 8 is passed is set according to the active material filling unit - the number of culms 5. It is shared by the turn portion 6C of each sintered substrate 8 at the boundary from the outbound line portion 6A to the return line portion 6B, and the turn portion 6D of each sintered substrate 8 at the boundary from the inbound line portion 613 to the outbound line portion 6A. A drying device 24.24 is arranged to perform the drying process 4. In this way, the sintered substrate 8 is meandered in order from the outgoing line portion 6A to the incoming line portion 6B! While feeding, the active material filling operation using the active material filling IIW upper T culm 5 is carried out a predetermined number of times.

In the above embodiment, the processing liquid tank has a vertical slit 13.
is formed, the processing liquid may spill out to the outside. In this case, it is recommended to catch the spilled processing liquid with a container-like member and return the processing liquid to the processing liquid tank using a pump, etc. .

In the above embodiment, the treatment by each electrolytic process 2 on the meandering production line 6 is performed in one electrolytic bath 22 as a shared device, and the treatment by each dry T culm 4 is performed by two Although the drying device 24.24 is used as a shared device, the present invention is not limited thereto, and J,
It is also possible to carry out the treatment in the active material salt solution tank as one shared device, and to perform the treatment in each washing step 3 in two washing tanks as shared devices, resulting in a meandering manufacturing process. The same processes arranged in a direction orthogonal to the parallel line portions of the line 6 may be performed using a shared device.

``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 the parallel line portions of the meandering production line are Since the same processes arranged perpendicular to each other are carried out by shared equipment, the manufacturing equipment can be constructed at low cost by reducing the number of control devices compared to the conventional method. Since both processes are carried out using shared equipment, the working conditions are the same and quality control can be carried out effectively.

[Brief explanation of the drawing]

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 processing liquid tank in the manufacturing method of the present invention, and FIG. 3 and FIG. 4 are explanatory views showing the conventional manufacturing method, respectively, and FIG. 5 is an explanatory view showing a state in which a sintered substrate is inserted into each processing liquid cylinder 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... vJ manufacturing lines 6A, 6B... parallel line portions, outward line portions, return line portions), 8... strip-shaped sintered substrate, 8a... plate of strip-shaped sintered substrate surface. 1') Rn- axis

Claims (1)

[Claims] An impregnation process in which a strip-shaped sintered substrate is impregnated with a solution of a salt of an active material, and an electrolysis process in which the sintered substrate impregnated with a solution of a salt of an active material in the impregnation process is electrolytically treated. The sintered substrate that has been electrolytically treated is washed with water, and the sintered substrate that has undergone the water washing step is dried. 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, the method comprising: making the manufacturing line meander; repeating the active material filling operation in each of the active material filling unit steps along the line, and performing the processing in the same step in a direction perpendicular to the parallel line portion of the meandering manufacturing line using a shared device, and A method for producing 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.