A welding device for precisely controlling the welding height of storage batteries

Abstract

This invention provides a welding device for precisely controlling the welding height of a storage battery, comprising a casting and welding base mold and a casting and welding position plate. The top surface of the casting and welding base mold has a casting and welding cavity. The casting and welding position plate has a positioning groove for positioning the battery case to be cast and welded. The casting and welding position plate is provided with several limiting pins, the lower ends of which protrude from the bottom surface of the casting and welding position plate. The casting and welding base mold has positioning holes for the limiting pins to extend into for positioning. The bottom surface of the casting and welding position plate also has a limiting block that abuts against the top surface of the casting and welding base mold during engagement. The limiting pins pass through the limiting block. The bottom surface of the limiting block has a clearance groove that avoids the opening area of ​​the top surface of the positioning hole. The design of the limiting block prevents the formation of lead blocks from solidifying at the positioning hole, thus avoiding changes in the battery welding height, resulting in precise welding height and improving the quality of battery casting and welding.

Description

Technical Field

[0001] This utility model belongs to the field of lead-acid battery manufacturing technology, specifically relating to a welding device for precisely controlling the welding height of batteries. Background Technology

[0002] The pre-cast battery needs to be placed on the casting and welding position plate for casting and welding. Currently, the casting and welding position plate is equipped with limit pins to control the casting and welding height. The lower end of the limit pin is thinner and the upper end is thicker. The thinner part of the lower end extends into the positioning hole of the casting and welding bottom mold, and the thicker part of the upper end abuts against the surface of the casting and welding bottom mold.

[0003] For example, the utility model with authorization announcement number CN220388493U discloses a battery busbar welding height adjustable device, wherein a limit pin is welded to the lower surface of the threaded rod, and a through hole is opened on the upper surface of the casting and welding mold at the position corresponding to the limit pin. The outer surface of the limit pin is inserted and slidably connected to the through hole on the upper surface of the casting and welding mold. Through the cooperation between the limit pin and the through hole of the welding mold, the position of the threaded rod is prevented from changing when the threaded rod rotates.

[0004] However, in actual operation, when the surface of the casting and welding bottom mold is scraped, the positioning hole is not easily scraped clean. If the lead block formed by the solidification of the lead liquid happens to be formed at the opening of the positioning hole of the casting and welding bottom mold, the thicker part of the upper end of the limit pin will directly abut against the lead block that is higher at the positioning hole during subsequent use. This will cause the positioning height to deviate, resulting in a shallow insertion depth of the electrode lug into the mold cavity, which may prevent the electrode lug from being welded. In addition, a shallow electrode lug weld, i.e., a high busbar weld height, will cause the middle cover to detach from the cover, resulting in quality problems.

[0005] Utility model patent application CN222608508U discloses a battery casting welding height level calibrable device. A limiting pin on the casting welding position plate extends into a positioning hole on the casting welding bottom mold. The limiting pin only serves a horizontal positioning function; vertical positioning is achieved by a balancing pin on the casting welding position plate pressing against the top surface of the casting welding bottom mold. However, this prior art requires additional balancing pins, increasing structural complexity. Furthermore, lead blocks formed from solidified molten lead can easily appear at the positioning hole. If lead blocks appear inside the positioning hole opening, they will also affect the normal use of the limiting pin. Utility Model Content

[0006] To address the aforementioned technical problems in the existing technology, this utility model provides a welding device for precisely controlling the welding height of a storage battery.

[0007] This utility model provides a welding device for precisely controlling the welding height of a storage battery, including a casting welding bottom mold and a casting welding position plate. The top surface of the casting welding bottom mold has a casting welding cavity. The casting welding position plate has a positioning groove for positioning in conjunction with the battery slot of the storage battery to be cast and welded. The casting welding position plate is provided with a plurality of limiting pins, the lower ends of which protrude from the bottom surface of the casting welding position plate. The casting welding bottom mold is provided with a positioning hole for the limiting pins to extend into for positioning. The bottom surface of the casting welding position plate is also provided with a limiting block that abuts against the top surface of the casting welding bottom mold during engagement. The limiting pins pass through the limiting block. The bottom surface of the limiting block has a clearance groove that avoids the opening area of ​​the top surface of the positioning hole.

[0008] Furthermore, the upper end of the limiting pin has a mounting section with a reduced diameter, and the mounting section and the lower end with a larger diameter form a limiting step. The mounting section of the limiting pin passes through the limiting block and is clamped and fixed to the limiting block by the bottom surface of the cast-welded position plate through the limiting step.

[0009] Furthermore, the casting and welding position plate is provided with mounting holes, the mounting section of the limiting pin passes through the mounting holes, and the mounting section at least the portion above the casting and welding position plate has external threads, and the portion of the mounting section above the casting and welding position plate is also fitted with a locking nut.

[0010] Furthermore, the top opening of the positioning hole forms a first flared mouth, which facilitates the flow of molten lead out of the positioning hole and reduces the accumulation of lead blocks in the positioning hole.

[0011] Furthermore, the clearance groove at least covers the first flared opening, reserving space for the solidified lead block to prevent excessive accumulation of lead blocks that could lead to an excessively high mating height.

[0012] Furthermore, a second flared opening is formed at the bottom of the positioning hole to facilitate the flow of molten lead from the positioning hole and reduce the accumulation of lead blocks in the positioning hole.

[0013] Furthermore, the bottom end of the limiting pin is a pointed tip, which extends out of the positioning hole and serves as a guide when the limiting pin is inserted into the positioning hole.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0015] The design of the limiting block prevents the lead block formed by the solidification of lead liquid at the positioning hole from changing the battery welding height and affecting the normal use of the limiting pin. Moreover, the limiting block can achieve the positioning of the casting and welding position plate in the vertical direction, so that the casting and welding height is accurate and beneficial to the battery casting and welding quality. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of the casting and welding position plate in this utility model.

[0017] Figure 2 This is a partial cross-sectional view of the welding device for precisely controlling the welding height of a storage battery, according to this utility model.

[0018] Figure 3 for Figure 2 A magnified view of part A in the middle.

[0019] Reference numerals: 1. Cast-welded bottom mold; 11. Cast-welded cavity; 12. Positioning hole; 121. First flared mouth; 122. Second flared mouth; 2. Cast-welded position plate; 2. Limiting pin; 21. Installation section; 211. Limiting block; 22. Clearance groove; 221. Locking nut; 23. Detailed Implementation

[0020] like Figures 1-3 As shown, a welding device for precisely controlling the welding height of a storage battery includes a casting and welding bottom mold 1 and a casting and welding position plate 2. The top surface of the casting and welding bottom mold 1 has a casting and welding cavity 11, and the casting and welding position plate 2 has a positioning groove for positioning in conjunction with the battery slot of the storage battery to be cast and welded. The casting and welding position plate 2 is provided with a plurality of limiting pins 21, and the lower end of the limiting pins 21 protrudes from the bottom surface of the casting and welding position plate 2.

[0021] The casting and welding bottom mold is provided with a positioning hole 12 for the positioning pin 21 to be inserted and positioned. The top opening of the positioning hole 12 forms a first flared mouth 121, and the bottom opening of the positioning hole 12 forms a second flared mouth 122, which facilitates the flow of molten lead from the positioning hole 12 and reduces the accumulation of lead blocks in the positioning hole 12.

[0022] The bottom end of the limiting pin 21 is a pointed tip, which extends out of the positioning hole 12 and serves as a guide when the limiting pin 21 is inserted into the positioning hole 12.

[0023] The bottom surface of the casting and welding position plate 2 is also provided with a limiting block 22 that abuts against the top surface of the casting and welding bottom mold 1 during mating. The limiting pin 21 passes through the limiting block 22. The bottom surface of the limiting block 22 has a relief groove 221 that avoids the opening area of ​​the top surface of the positioning hole 12. The relief groove 221 at least covers the first flared mouth 121, reserving space for the solidified lead block and preventing the lead block from accumulating too much and causing the mating height to be too high.

[0024] The upper end of the limiting pin 21 has a reduced diameter mounting section 211. The mounting section 211 and the lower end with a larger diameter form a limiting step. The mounting section 211 of the limiting pin 21 passes through the limiting block 22 and clamps and fixes the limiting block 22 to the bottom surface of the cast-welded position plate 2 through the limiting step.

[0025] The casting and welding position plate 2 is provided with mounting holes, the mounting section 211 of the limit pin 21 passes through the mounting holes, and the portion of the mounting section 211 at least above the casting and welding position plate 2 has external threads. The portion of the mounting section 211 above the casting and welding position plate 2 is also provided with a locking nut 23.

[0026] In use, the welding device for precisely controlling the welding height of the lead-acid battery is used by inverting the battery to be welded and positioning it with the positioning groove on the welding position plate 2. Then, the welding bottom mold is inserted into the lead pot and immersed in molten lead, filling the welding cavity 11 with molten lead. After the welding bottom mold is raised, it is hung up to remove excess molten lead from its surface. Then, the mounting section 211 of the limiting pin 21 passes through the limiting block 22 and then through the mounting hole on the welding position plate 2. The limiting pin 21 is fixed above the welding position plate 2 with a locking nut 23, so that the top surface of the limiting block 22 abuts against the bottom surface of the welding position plate 2. Then, the lower end of the limiting pin 21 is inserted into the positioning hole 12, so that the bottom surface of the limiting block 22 abuts against the top surface of the welding bottom mold. At this time, the lead-acid battery tabs are inserted into the molten lead in the welding cavity 11. After the welding bottom mold cools, the molten lead in the welding cavity 11 forms a confluence, completing the welding process.

Claims

1. A welding device for precisely controlling the welding height of a storage battery, comprising a casting welding bottom mold and a casting welding position plate, wherein the top surface of the casting welding bottom mold has a casting welding cavity, the casting welding position plate has a positioning groove for positioning in conjunction with the battery slot of the storage battery to be cast and welded, the casting welding position plate is provided with a plurality of limiting pins, the lower ends of the limiting pins protruding from the bottom surface of the casting welding position plate, and the casting welding bottom mold is provided with positioning holes for the limiting pins to extend into for positioning, characterized in that... The bottom surface of the casting and welding position plate is also provided with a limiting block that abuts against the top surface of the casting and welding bottom mold during mating. The limiting pin passes through the limiting block, and the bottom surface of the limiting block has a relief groove that avoids the top opening area of ​​the positioning hole.

2. The welding device for precisely controlling the welding height of a storage battery according to claim 1, characterized in that, The upper end of the limiting pin has a reduced diameter mounting section, which forms a limiting step with the lower end, which has a larger diameter. The mounting section of the limiting pin passes through the limiting block and is clamped and fixed to the limiting block by the bottom surface of the cast-welded position plate through the limiting step.

3. The welding device for precisely controlling the welding height of a storage battery according to claim 2, characterized in that, The casting and welding position plate is provided with mounting holes, the mounting section of the limiting pin passes through the mounting holes, and the mounting section at least the part above the casting and welding position plate has external threads, and the part of the mounting section above the casting and welding position plate is also provided with a locking nut.

4. The welding device for precisely controlling the welding height of a storage battery according to claim 1, characterized in that, The top opening of the positioning hole forms a first flared mouth.

5. The welding device for precisely controlling the welding height of a storage battery according to claim 4, characterized in that, The clearance groove at least covers the first horn opening.

6. The welding device for precisely controlling the welding height of a storage battery according to claim 1, characterized in that, The bottom opening of the positioning hole forms a second flared mouth.

7. The welding device for precisely controlling the welding height of a storage battery according to claim 1, characterized in that, The bottom end of the limiting pin is a pointed tip, which extends out of the positioning hole.

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