JPH03133055A - Strap forming method for lead-acid battery - Google Patents

Abstract

PURPOSE:To qualitatively stabilize a strap by supplying a fixed amount of molten lead alloy to a lug as a supplementing alloy, by heating the lug with a gas burner at the same time, and by melt-stirring the lug and a post by molten lead alloy flowing force and gas flame pressure to weld them. CONSTITUTION:A fixed amount of molten lead alloy 11 determined with buckets 12 are dropped to inclined surfaces of comb teeth-like jigs 7, 8 by the inclining of the buckets 12, then flows to lugs 3, 4 of anode and cathode plates 1, 2 from the inclined surfaces. At the same time, the lugs 3, 4 are heated with burners 13 while they are shaked. The lugs 3, 4 and posts 5, 6 are melt-stirred by gas flame pressure of the burners 13 and flowing force of the molten lead alloy 11. After anode and cathode straps were formed, the comb teeth-like jigs 7, 8 and post pedestals 9, 10 are removed and welding is completed. Since the amount of the molten lead alloy is determined, the melt-bonded depth of the strap is stabilized, and sure weld can be obtained.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention is used in the manufacture of lead-acid batteries, in which cathode plates and anode plates are alternately laminated and each lug of a group of electrode plates is welded and connected via a separator. The present invention relates to a method of forming a strap.

Conventional technology and its problems Conventionally, in the above strap forming process, after setting each ear of a group of electrode plates in a comb-shaped jig, a worker holds a gas burner and a foot lead rod and welds the ears. Ta. However, with this method, the depth of welding at the ear part varies, and the thickness of the strap also varies depending on the operator. Also,
Since each electrode plate group was welded separately, it took time to weld one electrode plate group.

OBJECTS OF THE INVENTION The present invention eliminates the above-mentioned drawbacks and proposes a method for forming straps of electrode plate groups with stable quality, shortening manufacturing time, and automating welding.

SUMMARY OF THE INVENTION The present invention is a method of forming a strap for a lead-acid battery as set forth in the claims.

EXAMPLE Hereinafter, an example of the present invention will be described in detail based on the drawings. 1 is a cathode plate, 2 is an anode plate, 3.4 is the ear part of the cathode and anode plates, respectively, and 5.6 is the pole column of both poles, respectively.

7.8 is a comb-shaped jig having an inclination for allowing the molten alloy tE111 to flow onto each electrode plate lug, and into which the lug 3.4 is fitted together with the pole column pedestal 9.10. 12 is a packet for supplying the molten alloy lead 11, and 13 is a gas burner that melts and stirs the molten alloy lead.

The gas burner 13 is installed directly above the ear 5.4.

In the method of the present invention, first, the ear portion 5.4 is fitted and fixed between the comb tooth-shaped jig 7.8 and the pole base 9.10.

Next, the pole column 5.6 is placed on the pedestal 9.10.

During this time, scoop out the molten alloy lead 11 with the packet 12,
The molten alloy lead 11 is quantified. The molten alloy lead 11 quantified in the packet 12 then falls onto the slope of the comb-shaped jig 7.8 along with the slope of the packet 12, flows along this slope and reaches the ears of the negative and anode plates 1.2. Flows onto part 3.4. At the same time, by heating the ear part 3.4 while swinging the gas burner 13, the ear part 3.4 and the pole column 5.6 are melted and stirred by the thermal power of the gas burner 13 and the force of the molten alloy lead 11 flowing into the ear part 3.4. be done. After the anode and cathode straps are formed in this manner, the comb-shaped jig 7.8 and the pole base 9.10 are removed, and welding is completed.

Although one embodiment of the present invention has been described above with reference to the drawings, various embodiments of the present invention can be considered without departing from the spirit thereof.

For example, in the above five examples, the packet 13 was used as a means for supplying the molten alloy lead 11, but a quantitative bonder may be used instead.Also, the alloy lead used in the present invention is: It contains lead in a range that is industrially called pure lead.

Effects of the Invention As described above, the present invention can simultaneously and automatically form the straps of each ear of the electrode plate group, thereby shortening the strap forming time, and also because the amount of molten alloy lead can be determined. In addition, the welding depth of the strap is stable and a reliable bond can be obtained, which is of great industrial value.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a strap being formed according to the present invention, and FIG. 2 is a perspective view of a welding jig used in the present invention. 3.4: Ear portion 5.6: Pole post 7.8: Comb tooth-shaped jig 9.10: Pole post pedestal 11; Molten alloy lead 12: Packet 13: Gas burner Fig. 1

Claims (1)

[Claims] In a strap forming method in which the ears of a group of electrode plates, each consisting of cathode plates and anode plates stacked alternately on top of each other via separators, are welded to each pole column, the ears are fitted into a comb-shaped jig and the After placing the pole column on the tool, a quantified amount of molten alloy lead is poured onto the ear as a supplementary alloy, and at the same time, the ear is heated with a gas burner to increase the flow force of the molten alloy lead. A method for forming a strap for a lead-acid battery, which comprises forming a strap by melting and stirring the ear portion and the pole column under the pressure of a gas flame and welding the same.