JPS6334863A - Manufacturing equipment for storage battery including spiral electrode plate group - Google Patents

Abstract

PURPOSE:To make it possible to load an electrode plate group in a metal case smoothly keeping a tab terminal standing straight without winding an adhesive tape, by pulling out the axis of a winding axis with no tab terminal, and then pulling out the axis of the other winding axis with a tab terminal, of a pair of winding axes. CONSTITUTION:A rotary table 12 forms a spiral electrode plate group, and is loaded in a metal case 1. A jig A to wind a cathode plate 3 and an anode plate 4, together with a separator 2, is wound up as a spiral electrode plate group 15 by the rotation of a pair of winding axes 13 while being squeezed by a pair of pressure rollers 14. A detecting jig B detects the winding end 10 of the anode plate 4 at the periphery of the electrode plate group 15, and by the detected signal, a jig C stops the rotation of the axes 13. Then a jig D pulls out a rear side winding axis 13' with no tab terminal 5, and a jig E pulls out a front side winding axis 13'' with the terminal 5. After that, a jig F makes the terminal 5 a little sloped in the peripheral direction of the electrode plate group 15. and a jig G loads the electrode plate group 15 in a case 1.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to the formation of a spiral plate group used in a storage battery, particularly a cylindrical sealed nickel cadmium storage battery, and its insertion into a cylindrical metal case. The present invention relates to a manufacturing apparatus 1.

2. Description of the Related Art A conventional small-capacity cylindrical sealed nickel-cadmium storage battery is generally constructed as shown in FIG. This is done by inserting an electrode plate group consisting of a spirally wound electrode plate 4 and a cathode plate 4.

At this time, the cathode plate 4 is not provided with a tab terminal 5 and its outer peripheral surface is brought into contact with the metal case l, and the anode plate 3 is formed with a tab terminal 5 in advance and protrudes into the opening 6 of the metal case 1. In a later process, a sealing plate which also serves as a positive terminal is welded to this lead piece.

Next, in a conventional apparatus for constructing a spiral electrode plate group, the electrode plate group is simultaneously pulled out while pressing a pair of winding shafts in one direction facing each other with a pressure roller.

Problems to be Solved by the Invention However, with this device, the tab terminals of the anode plate 3 are bent as the electrode plate group shifts in the direction of the winding axis, and in the subsequent process, the bent tab terminals 5 are stretched straight. A lot of work was required. Also, since the shape of the bending position is unstable,
In order to reliably bend the tab terminal 5 into a predetermined position, as shown in a in FIG. Then, as shown in FIG.
A method has been proposed (Japanese Patent Application Laid-open No. 111275/1983) in which the paper is advanced and bent laterally. However, the tab terminal 5 side of the anode plate will eventually be welded to the sealing plate, so in the later process,
It will be necessary to make it stand upright again.

Next, regarding the device for smoothly inserting the spirally wound electrode plate group into the battery can, as shown in FIG. Therefore, a tight adhesive tape 1 is placed below the outer periphery of the electrode plate group.
There have been proposals to reduce the outer diameter of the lower part of the electrode plate group by winding the adhesive tape 11 (Japanese Patent Application Laid-open No. 60-7072), and a proposal to insert the adhesive tape 11 while cutting it (Japanese Patent Application Laid-Open No. 60-7073). However, since the adhesive tape 11 is attached to these batteries, the internal resistance characteristics of the storage battery become high and the voltage during discharge becomes low.

Means for Solving the Problems The present invention eliminates the above-mentioned drawbacks. Of a pair of winding shafts, the shaft on the side without the tab terminal is pulled out, and then the shaft on the side with the tab terminal is pulled out. This prevents the electrode plate group from shifting to the side where the tab terminal is located, prevents the tab terminal from bending, detects the winding end position of the cathode plate, and presses the terminal position of the cathode plate with the pressure roller. This allows the electrode plate group to be smoothly inserted into the metal case without wrapping adhesive tape.

The electrode plate group can be smoothly inserted into the metal case without wrapping adhesive tape while the working tab terminal remains erect.

Example m1 Figure is a front view of a manufacturing apparatus for forming a spiral electrode plate group according to the present invention and inserting it into a cylindrical metal case 1. 12 indicates a rotary table that forms a spiral electrode plate group and inserts it into a metal case l, and winding jigs A-B, O, D, [F, G are provided at equal intervals around the rotating table. .

As shown in Figure 2, the winding station is a winding station where the anode plate 3 and cathode plate number are spirally wound together with the separator 2, and a pair of winding shafts 13 inserted from the front and back are rotated to create a pair of winding shafts. While being pressed by the pressure roller 14, the spiral electrode plate group L5
It is rolled up as. A pair of electrode plate chucks 16 and a separator chuck 17 are also provided as auxiliary jigs.

B is the cathode plate 4 on the outer periphery of the electrode plate group 15, as shown in FIG.
This is a detection station equipped with a photosensor 18 for detecting the winding end terminal 10.

As shown in FIG. 4, C indicates the winding end terminal i of the cathode plate 4 in response to a signal from the photosensor 18.

is pressed by the pressure roller 14, and the winding shaft 1
This is a winding shaft stop station that stops the rotation of No. 3.

As shown in Fig. 5, the winding shaft 13' inserted from the rear side where there is no tab terminal is pulled out while touching the stopper 19 provided as necessary to prevent the shaking plate group 15 from moving to the rear side. This is a winding shaft removal station.

As shown in FIG. 6, E is a winding shaft removing station for pulling out the front winding shaft 13' having the tab terminal 5. Since the winding shaft 13' has already been pulled out, the electrode plate group 15 does not shift toward the front side due to the pressure of the pressure roller 14;
C. The tab terminal 5 remains erect without falling or being damaged in any way and remains on the winding shaft 1? is pulled out.

As shown in FIG. 7, F is a tab tilting station for slightly tilting the tab terminal 5 toward the outer periphery of the electrode plate group 15, and this purpose is achieved by protruding a tab tilting jig 20 having a partially sloped surface.

Reference numeral G designates an insertion station in which the electrode plate group 15 is inserted into the metal case 1 set at a predetermined position by a rotary table 12' while being guided by a guide roller 22 by a protruding rod 21.

Since the tab terminal 5 is inclined outward in advance, bending during insertion can be avoided.

At the H position, each winding jig returns to its predetermined position and winding begins again at the person's position.

Effects of the Invention As described above, according to the present invention, the work of forming a spiral electrode body and inserting it into a metal case can be automated, and the problem of damage to tab terminals, which was a problem at that time, has been eliminated. At the same time, it is possible to eliminate the work that would be done using adhesive tape, and improve the characteristics of the battery.The manufacturing process can also be divided by using a rotary table, which can be expected to shorten manufacturing time. It is of great value.

[Brief explanation of the drawing]

Fig. 1 is a schematic front view of a manufacturing apparatus showing an embodiment of the present invention, Fig. 2 is a schematic front view of the winding station, Fig. 3 is a schematic front view of the detection station, and Fig. 4 is a schematic front view of the winding shaft stop station. The front view, Figures 5 and 6 are partially cutaway side views of some parts of the winding and unwinding station, Figure 8 is a partially cutout schematic diagram showing the insertion station, and Figure 9 is a cylindrical nickel A cross-sectional view of a spiral plate group of a cadmium storage battery inserted into a metal case I. Figure *10 is a cross-sectional view of a conventional plate group configuring device. FIG. 11 is a cross-sectional view of a conventional device for inserting a group of electrode plates into a battery can. 1 is a metal case, 2 is a separator, 3 is an anode plate, 4 is a cathode plate, 5 is a tab terminal, 13 is a winding shaft, 13' is a rear winding shaft, 1r is a surface winding shaft, and 14 is a winding shaft. Pressure roller, 15 is a group of electrode plates

Claims (1)

[Claims] 1. In manufacturing a storage battery in which a spiral electrode plate group is formed by winding a band-shaped anode plate, a cathode plate, and a separator, and this is inserted into a metal case, A separator is sandwiched between the pair of winding shafts, and the separator is inserted into the gap between the pair of winding shafts. A station where a pressure roller is brought into contact with the rotating shaft from opposite directions, an anode plate and a cathode plate are inserted into the gap between the separator and the pressure roller, and the winding shaft is rotated to wind the cathode plate into a spiral. A station for detecting the end position, a station for stopping the rotation of the winding shaft at the position where the pressure roller presses the end of the cathode plate in response to a detection signal, and a station for attaching one side of the winding shaft to the spiral electrode body first. There is a station where the electrode plates are pulled out separately from the opposite side, a station where the tab terminals protruding from the anode plate are tilted outward from the center, and another station where the electrode plates are inserted into a metal case that has been transferred to a predetermined position by a rotary table. 1. An apparatus for manufacturing a storage battery having a spiral electrode group, characterized in that the device comprises a station for filling a spiral plate. 2. When removing a pair of winding shafts from the spiral electrode plate group,
2. The apparatus for manufacturing a storage battery having a spiral electrode group according to claim 1, wherein the side of the electrode plate without a lead piece is removed, and then the shaft on the side of the electrode plate with a lead piece is removed.