Stamping die for accumulator grid

Abstract

The invention is a kind of punching model for the accumulator slab lattice, which includes a moving template and a fixed template, there sets a frame rib on the cavity of the template, there sets slab lattice unit symmetrical arranged in the four directions, each slab lattice sets the vertical and the transverse slot ribs which are cross, the ear rib of each slab lattice unit is set on the upper and the subjacent frame, and which is connected to the frame slot rib, there sets a blade in each slot rib, the blades on the moving template and the fixed template are correspondent from upwards down, the vertical cross section of the rib is W type, the blade is set on the top of the W type slot rib. The moving template and the fixed template are correspondent from top down, there has no cutting resistance when in punching, and it prolongs the lifespan of the template.

Description

technical field [0001] The invention relates to a stamping die, in particular to a stamping die for stamping battery grids. Background technique [0002] The battery grid is like a skeleton, which can be used to support active materials to form plates. In order to effectively retain the active material, the grid is often made into a fence shape with horizontal and vertical ribs with different cross-sectional shapes, so that there is a larger contact area between the active material and the grid. The thickness of the grid ribs is directly related to the quality of the plates. The ribs are both thick and dense, which reduces the active material on each plate and reduces the capacity of a single plate. Therefore, the ribs of the grid are designed to be as thin as possible, so that the distance between the ribs is larger, so that the capacity of the active material can be effectively increased. So far, the manufacturing methods of the grid mainly include casting, stamping, and...

AI Technical Summary

Problems solved by technology

So far, the manufacturing methods of the grid mainly include casting, stamping, and netting. Due to various conditions, the casting method is currently used to manufacture the grid. The ribs of the grid manufactured by this method are relatively thick and cannot be cast. Thin ribbed grid

The tabs of the grid made by the stretching method are relatively thin. When a large current load passes through, it is easy to melt, causing the entire grid to be scrapped.

U.S. Patent 4,279,977 provides a technology of rapid rolling grid, and U.S. Patent 5462,109 provides a technology of expanded expanded grid. Formed, the disadvantage is that the processed grid lacks a frame, such as when used for positive plates, its strength and corrosion resistance have limitations

The stamped grid has the advantages of compact structure, thin ribs, light weight, and high quality. However, because the stamping molds are made of concave and convex molds that are tangent to each other from top to bottom, the lead plate is soft and easy to break, and it is easy to break during the stamping process. Therefore, not only the two side walls of the rib groove on the mold are subject to a large tangential cutting force, the rib groove is easy to break, resulting in the scrapping of the formwork, and the diameter of the punched grid rib is relatively thick, which cannot be processed. Thin grid ribs, so the capacity of a single plate cannot be guaranteed

Therefore, there is no technology and stamping die related to the pure lead stamping processing grid in the patents and documents that have been disclosed at present.

Images