Forming die for upper shell of automobile battery box

Abstract

The invention discloses a forming die for an upper shell of an automobile battery box. A first stretching die assembly for stretching a section I with the maximum height part on the upper shell of theautomobile battery box for the first time, a second stretching die assembly used for secondary stretching for integrally forming the upper shell of the automobile battery box and a shaping die assembly used for carrying out shaping of arc transition on corners of a formed product are sequentially arranged between an upper die assembly and a lower die assembly, wherein a first upper die of the first stretching die assembly, a second upper die of the second stretching die assembly and a shaping upper die of the shaping die assembly are all connected to the upper die assembly, and a first lowerdie of the first stretching die assembly, a second lower die of the second stretching die assembly and a shaping lower die of the shaping die assembly are all connected to the lower die assembly. Therefore, the production efficiency is greatly improved, the production cost is saved, the welding defect is avoided, and the risk of airtight leakage is also avoided.

Description

technical field [0001] The invention relates to the technical field of moulds, in particular to an integral molding mold for the upper case of an automobile battery box. Background technique [0002] At present, due to people's growing awareness of environmental protection, more and more people choose new energy electric vehicles as a means of transportation, and the battery box is an important part of the electric vehicle, it is the main body of the battery pack, it must have Enough strength to fix the battery pack, but also have the functions of dustproof and beautiful. Generally, the battery box includes an upper case and a lower case, which are fixedly connected. [0003] as attached figure 1 And attached figure 2 The upper shell of the car battery box shown in , it can be divided into three sections, which are section one 1-1, section two 1-2 and section three 1-3, and the highest part of section one 1-1 is It can reach 304.7 mm, and the height drop of the first st...

AI Technical Summary

Problems solved by technology

Therefore, its disadvantages are: on the one hand, each subsection needs to have a stretching die, so there are many molds, and the manufacturing cost is very high; on the other hand, each subsection has a stretching allowance when stretching. Therefore, the use of materials is too wasteful, and the utilization rate of materials is too low, which further increases the production cost; on the other hand, welding defects are easy to occur during welding, such as uneven welds or insufficient airtightness, thereby reducing the battery case. The air tightness is low, so that gas or liquid will enter the battery box through the air hole, which will affect the normal operation of the battery

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