JPS6041830B2 - Punching method of electrode plate substrate - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for punching out a storage battery plate substrate with legs.

To manufacture this type of substrate, for example, as shown in the first diagram,
A pair of symmetrical boards c and c are punched out from a board material a of a certain width such as a lead plate with legs b facing each other, and said 1
It is conceivable that the pair of substrates c and c can be formed into separate substrates c by cutting the intermediate part between the continuous legs b and b after processing such as filling with paste. When punching out a pair of consecutive facing boards c and c, the legs b,
Lost portions d of material a are generated on the left and right sides of the material, resulting in material loss, and the disadvantage is that the material must be expanded accordingly.

Also, as seen in Japanese Patent Application Laid-Open No. 50-21228, 1
It has been proposed that the board be cut by a curved line that protrudes only to the side, and that one of the cutting lines on both sides is the upper edge of the board and the other is the lower edge of the board, but in particular, both boards Since the upper edge of the outer frame, which is the most important part, becomes a narrow part with a recessed part, this creates a disadvantage in that the substrate is disadvantageous in terms of current collection. The purpose of the present invention is to eliminate such drawbacks, and the purpose of the present invention is to punch out two electrode plates 2 and 3 from a material for electrode plates along an external cutting line 1, and to punch out electrode plates 2 and 3 with an area equivalent to two sheets from a material for electrode plates and substrates, and to A lower edge 7 which bisects the surface portion by a bending cutting line 4 that straddles the virtual center line 15 and bends alternately on both sides thereof, thereby providing the legs 5, 6 of the respective substrates 2, 3 alternately on both sides thereof;
It is formed by forming 8.

The external cutting line 1 has continuous edges 10 and 11 on both substrates 2 and 3.
are bent so that they are simultaneously punched out from the electrode plate material 12. Reference numeral 13 denotes a medium lattice formed by punching on each of the substrates 2 and 3 at the same time as or before or after punching from the material 12, and 14 represents a rib-shaped outer frame portion raised above the surface of the medium lattice.

The bent cutting line 4 is bent alternately from the intermediate line 15 between the two substrates 2 and 3 to the substrate 2 side and the substrate 3 side on both sides to form both the substrates 2 and 3 to be the same size, and to form the legs 5 and 6. lower edge 7,
8 is formed into a relatively wide straight line so that it can be stably placed on the saddle 17 of the storage battery case 16 as shown in the third figure. 1
8 is a separator.

In this way, according to the present invention, two electrode plates are punched out of a material, and at the same time, the central plane is divided into two by bending cutting lines that straddle the virtual center line and bend alternately on both sides of the plate. Since the lower edge of each board is provided with legs alternately, each lower edge is provided with a plurality of legs, and the upper edge of the outer frame, which particularly affects current collection, is completely free. It has the effect that two substrates having no concave portions and good current collection performance can be manufactured from the material without waste.

[Brief explanation of the drawing]

FIG. 1 is a plan view of an example of punching an electrode plate substrate, FIG. 2 is a plan view of an embodiment of the punching method of the present invention, and FIG. 3 is a cut-away side view showing the state of use of the electrode plate substrate of the present invention. There is. 1... External cutting line, 2, 3... Electrode plate substrate, 4... h... Bend cutting line, 5, 6... Leg, 7, 8... ... lower edge, 12 ... material for electrode plate board.

Claims (1)

[Claims] 1. Punching out two electrode plates 2 and 3 from the electrode plate substrate material along the outer cutting line 1, and bending their common central plane alternately to both sides of the plate across the imaginary center line 15. The lower edge 7 is bisected by the cutting line 4 and is thereby provided with alternating legs 5, 6 of each substrate 2, 3 on both sides thereof.
, 8. A method for punching out an electrode plate substrate formed by forming .