JP2002198030A - Molding jig for strap connecting electrode lug group of lead storage battery - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect electrode edges by pouring molten lead, using a molding jig for a strap, connecting plate lugs of lead storage battery, composed of a comb shaped jig and a fitting metal, and to reduce the volume of the lead when the strap is formed, and to prevent the molten lead from dripping from the gaps between the plate lugs and the fitting metal during the molding operation, which gives damage to the separator by burning, and causes a short-circuit between positive electrodes and negative electrodes. SOLUTION: The molding jig for a strap, connecting plate lugs of lead battery is composed of a comb shaped jig 2 and a fitting metal 3. A convex surfaces 3b, of which one end is open, is formed on the upper surface of the fitting metal 3, on the side of touching end surface 3a which touches with the comb shaped jig 2, so that the convex surfaces locate at the position corresponding to the slits s, s for inserting respective plate lugs, formed between the teeth of combs a, a,... of comb shaped jig 2 touching the fitting metal 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a jig for forming a lead group connection strap of a lead storage battery.

[0002]

2. Description of the Related Art A conventional jig M for forming an ear group connection strap of a lead-acid battery comprises a comb-shaped jig A and a backing plate B shown in FIG. A series of interconnected straps are formed by lining up a group of identically poled ears of the same polarity while pouring molten lead over the top of each ear. That is, as shown in FIG. 6, one side of the comb-shaped jig A is formed between the comb teeth a, a of the comb tooth row a, a,. And the ear insertion slits s, s,...
The upper end y1 of each ear y of the electrode plates Y of the same polarity in the electrode plate group is placed on the upper surface of the comb-shaped jig A at the tip end of the upper surface of the comb teeth row a, a,. One end is opened so as to face the inside of the strap forming concave surface A1, and in this state,
Is formed on the upper surface on the side of the end face b where the one end face b is brought into contact with the tip face a1 of the comb teeth row of the comb-shaped jig A and the comb teeth rows a, a,. The open end surface of the strap-forming concave surface B1 of the rectangular shape longer than the comb teeth row of the comb-like jig A is communicated with the open end surface of the concave surface A1 of the comb-like jig A. Are melted by a burner, and the concave surface A1 surrounding the comb rows a, a,.
And B1 are supplied and filled, and the filled welding lead completely covers the upper end y1 of each ear y and connects the ear groups together to form a strap. In the above-described strap molding, in order to completely cover each ear y with the formed strap of the electrode group, particularly in order to sufficiently cover the upper end y1 of each ear y, a corresponding long rectangular concave surface of gold B is required. The width w dimension of B1 needs to be at least about 2 mm.

[0003]

As described above, each of the slit rows s, s,... For the ear insertion slits s, s,. The upper end part y1 of the ear y is inserted, and the end faces a1, a of the comb tooth rows a, a,.
The end face b of the gold B is applied to the ears 1, 2,..., And in this case, the ear groups y, y,. The inner surface y2 of each ear y is pressed against the closed end surface s1 of each slit s, and the outer surface y of each ear y
Usually, between the contact surface 3 and the contact end surface d of the backing metal B, the molten lead for molding is usually set to a state in which there is substantially no gap of 1 mm or less without dripping or dropping immediately. However, in practice, the width of each ear of the ear group of the electrode group often varies, and the outer end surface y1 of the ear y and the pad B
6 often exceeds 1 mm as shown in FIG. In such a case, in the strap forming operation, while the raw bar is melted and supplied to the corresponding long rectangular concave surface B1 of the gold B, the forming strap forming process for completely covering the outer peripheral surface of each ear is performed. Before the molten lead solidifies, it falls downward from the gap g and falls on the upper surface of the electrode group,
Problems such as burning of the separator and short-circuiting of the positive and negative electrodes occurred. Therefore, development of a jig for forming an ear group connection strap that eliminates such inconvenience is desired.

[0004]

SUMMARY OF THE INVENTION The present invention provides a jig for forming a lead group connection strap of a lead storage battery which solves the above-mentioned problems, and includes a comb-shaped jig and a comb tooth of the comb-shaped jig. In a jig for forming an ear group connection strap comprising a backing metal applied to an end face on the row side, the corresponding metal is formed between each comb tooth of the comb tooth row of the comb-shaped jig on the end face on the contact side. The strap forming concave surface is disposed at a position facing each of the ear insertion slits.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention relates to a jig for forming an ear group connection strap of an electrode plate group comprising a comb-shaped jig and a backing plate. The comb-shaped jig has a conventional structure. Although there is no change, the backing plate has the following characteristic configuration. Figure 1
In FIG. 3, reference numeral 1 denotes an example of a connection strap forming jig of the present invention applied to connect a negative ear group protruding to one side of the upper surface of the electrode plate group. And a comb-shaped jig 2 and a backing plate 3. The comb-shaped jig 2 has the same configuration as that of the conventional comb-shaped jig A shown in FIG. 5 described above. Use the same.

The structure of the backing plate 3 which is a feature of the present invention is such that the top surface a of the comb tooth rows a, a,.
1 is formed between the comb teeth a, a of the comb tooth rows a, a,. .. Are arranged at positions facing the respective slits s. In the illustrated example, each notched concave surface 3b is, for example, a triangle when viewed from the top, and its width w dimension, that is, the width W from the bottom surface 3b1 of the open end to the vertex 3b2, is, The width L of the open end face is 7 mm, which is wider than the length L ′ 3 mm of the open end face of the slit between the comb teeth. 8 mm, which is the same as the depth of the long rectangular concave surface B1 for forming a strap. FIG.
The perspective view of the gold 3 is shown.

Thus, as shown in FIG. 3, the upper end portions y1, y1,... Of the negative electrode ears y, y,. Insert the comb teeth a, a,... So as to face the upper concave surface A1, and set the inner end surface y2 of the ear y against the closed end surface s1 of the slit s. Is brought into contact with the end face a1 of the jig 2 to make the open end face of each strap forming concave face 3b communicate with the open end face of each slit s, and a triangular forming concave face 3b is provided in front of the outer end face of each ear y. And the end face a of each adjacent comb tooth a, a
After the open end faces of the respective slits s are closed and closed by the end faces 3a between the triangular concave faces 3b adjacent to the nucleus of the gold 3 corresponding to 1 and a1, the raw bar made of lead is burned by a conventional method. While melting, the molten lead is supplied and filled into the strap forming concave surface A1 of the comb-shaped jig 2 and the corresponding forming concave surfaces 3b, 3b,. Thus, the negative electrode strap NS completely covering each ear and firmly connecting between the ears is formed. Thus, the electrode plate group K
As shown in FIG. 4, the outer end surfaces of the ears y of the ear group of the negative electrode plate were provided with coating portions NS1, NS1,... Of 2 mm-thick triangular protrusions corresponding to the concave surfaces for the formed straps, respectively. A negative electrode forming strap NS in which the negative electrode tabs are connected to each other is formed. In FIG. 4, in addition to the negative electrode forming strap NS, a conventional comb-shaped jig suitable for connecting the positive electrode ear group and the corresponding positive electrode ear group are connected by using the corresponding metal plate of the present invention. Triangular projection PS covering the side of each ear y
1 shows an electrode group K provided with a molded strap PS provided with 1, PS1,.

[0008] When the jig 1 of the above-described embodiment of the present invention is used to form 100 formed straps NS connecting the negative electrode ears of the 100 electrode plates, the ears of the ears are formed. As shown in FIG. 6, there is a case where there is a variation in the width, and sometimes a gap having a gap g of 1.5 to 2 mm between the inserted ear y and the facing surface of the gold 3 is generated. There was no dripping of the molten lead from the small gap g, and the above-mentioned inconvenience caused by the conventional jig was not observed at all in 100 cases. This is because each triangular forming concave surface 3b disposed on the backing plate 3 has a smaller volume than in the past, so that the supply amount of the molten lead supplied thereto is small and the heat capacity is correspondingly small. Since the peripheral wall of each forming concave surface 3b is formed so as to surround the gap g between the ear y and the backing plate 3 more rapidly, it solidifies more quickly, and the solidification proceeds rapidly from the gap g. It is considered that inconveniences such as sagging and falling are prevented. Thus, a smooth and highly efficient good lead storage battery can be obtained.

For comparison, using a conventional jig M for forming ear group connection straps shown in FIG. 5, 100 negative electrode groups of 100 electrode plate groups were formed into 100 cases of connection straps by the above conventional method. At that time, during the work of connecting and forming the straps of the ten electrode groups, molten lead dropped from the gap g of 1 to 2 mm between the ears and the pad to the upper surface of the electrode group. This is because the amount of molten lead charged into the concave surface B1 on the elongated rectangle having a relatively large volume of the backing metal B is extremely large, so that it takes a long time to solidify and before solidification. It is considered that a part thereof hangs down from the gap g and falls on the upper surface of the electrode plate group.

The shape of each small-volume concave surface 3b formed on the backing plate 3 is not limited to a triangle, but may be any shape such as a U-shape or an arc, and its width w is 2 mm.
Not only that, but it may be larger, but it is sufficient that at least 2 mm is used. Thus, the concave surface 3b having the small volume only needs to be provided in the number of the ear insertion slits of the positive electrode group or the negative electrode group of the comb-shaped jig 1 to be brought into contact with the concave surface 3b. Compared with the case where the long rectangular forming concave surface B1 is formed over the entire length of the row, remarkable saving can be achieved. Note that the length of the concave surface 3b facing the slit may be equal to or slightly larger than the width of the facing slit.

The conventional comb tooth-shaped jig A shown in FIGS. 5 and 6 has a concave surface A2 for installing the pole base pedestal C at the same time as the ear group connection strap is formed and the pole is welded thereto. And a series provided adjacent to the concave surface A1 for forming a strap. Therefore, the conventional comb-shaped jig 2 used in the present invention
As shown in FIG. 5, the same structure as that shown in FIG. 5 is used.
Is provided and welded to the outside of the molded straps NS and PS to provide a negative pole NP and a positive pole PP. In the case of the intermediate strap molding, the pole post base C is
Needless to say, it may be replaced with an intermediate cell connection tab base.

[0012]

As described above, according to the present invention, the concave surface for forming the strap formed on the lug of the jig for forming the ear group connection of the electrode plate group for the lead-acid battery is formed by the comb to which the abutment is brought into contact. Since it is arranged to face each ear insertion slit between the comb teeth of the tooth-shaped jig, it is melted and consumed compared with the case of using the metal plate formed on the conventional concave surface for forming a long rectangular strap. Not only can the amount of lead be reduced significantly, but also during the molding of the strap, the molten lead drips from the gap between the ear and the pad, causing the electrode group separator to burn out due to the drop,
Inconveniences such as a short circuit between the positive and negative electrodes can be prevented, and a lead-acid battery provided with positive and negative electrode forming straps can be manufactured smoothly and inexpensively.

[Brief description of the drawings]

FIG. 1 is a plan view of a jig for forming a connection strap of an electrode plate group of a lead storage battery according to an embodiment of the present invention.

FIG. 2 is a perspective view of the metal plate of the present invention shown in FIG.

FIG. 3 is a plan view showing a use state of the jig of FIG. 1;

FIG. 4 is a perspective view of an electrode group having a strap formed by the jig of the present invention shown in FIG. 1;

FIG. 5 is a perspective view of a conventional jig for forming a connection strap of an ear group of a lead storage battery electrode group.

FIG. 6 is a central cross-sectional view for explaining a use state of a conventional jig.

[Explanation of symbols]

REFERENCE SIGNS LIST 1 jig for forming ear group connection strap of lead-acid battery electrode group of the present invention 2 comb-shaped jig 3 backing plate 3a end surface for contacting backing plate 3b concave surface for forming point-shaped strap

Claims (1)

[Claims] 1. A jig for forming an ear group connection strap comprising a comb-shaped jig and a backing metal applied to an end face of the comb-shaped jig on the side of a comb tooth row, wherein the corresponding gold is disposed on the contact side thereof. Characterized in that a strap-forming concave surface is disposed on the end face of the comb-shaped jig at a position facing each ear insertion slit formed between the comb teeth of the comb tooth row of the comb-shaped jig. Jig for forming lead group connection straps for lead-acid batteries.