Extrusion die for profile of lifting lug of new energy battery pack

Abstract

The invention discloses an extrusion die for a profile of a lifting lug of a new energy battery pack. The extrusion die comprises an upper die and a lower die; the upper die is a porthole die; the lower die is a forming die matched with the porthole die; the upper die includes a die core, portholes and porthole bridges; the portholes include peripheral portholes and middle portholes; and the lowerdie includes a stop block structure located on the end face around forming holes in the lower die. In such a manner, the extrusion die for the profile of the lifting lug of the new energy battery pack increases the middle portholes, and optimizes the porthole bridges, stop blocks and a metal flow inlet angle; the profile can meet the design requirement after the die undergoes die trial and die repair for three times; all parts of the profile generate small deformation; during profile extrusion, the metal flow rate is more uniform; stable production can be realized; the die trial and die repair time is greatly shortened; and the die trial cost is reduced, and thereby, the development time is shortened.

Description

technical field [0001] The invention relates to the technical field of aluminum profile dies, in particular to a new energy battery pack lug profile extrusion die. Background technique [0002] Most of the lifting lug profiles of new energy vehicle battery packs are in the 6061T6 state, which requires high mechanical properties of the profiles, and requires a tensile strength greater than 260Mpa. The section design of this profile is rather special: 1. There are many cavities; 2. The core area Small; 3. The gap between the profile wall thickness is large; 4. The cavity wall thickness tolerance of the profile is strict; 5. The fluidity of the metal is poor and the extrusion force is large when the 6061 alloy is extruded; due to the above special characteristics of the profile, There are special requirements for mold design and extrusion process. [0003] The ordinary mold design method was used before, and the molded material still could not meet the requirements of the draw...

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Problems solved by technology

[0003] The ordinary mold design method was used before, and the molded material still could not meet the requirements of the drawings stably after more than 6 times of mold trial and repair, mainly due to problems such as uneven wall thickness at the inner cavity of the profiled material, strained surface of the profiled material, etc., resulting in a long development time and seriously affecting The whole project development progress

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