Progressive die for safety belt fixing nut stiffening plate

Abstract

The invention relates to a progressive die for a safety belt fixing nut stiffening plate. The progressive die comprises an upper die assembly, a lower die assembly and an unloading plate. The upper die assembly is sequentially provided with two punching male dies, a partial appearance punching male die and a bending-cutting off male die in the feeding direction. The lower die assembly is sequentially provided with two punching female die holes, a partial appearance punching female die hole and a bending-cutting off female die groove matching the corresponding components of the upper die assembly in the feeding direction. Two through holes capable of allowing the punching male dies to penetrate, a partial appearance punching hole capable of allowing the partial appearance punching male die to penetrate, and a bending-cutting off hole capable of allowing the bending-cutting off male die to penetrate are formed in the unloading plate. The unloading plate is connected with the upper die assembly through an unloading spring and an unloading bolt. The safety belt fixing nut stiffening plate can be prepared through a continuous forming progressive die production manner, safety protection can be ensured, and production efficiency and part quality can be improved; and production cost can be reduced, and the requirements for part precision and mass production can be met.

Description

technical field [0001] The invention relates to a mold, in particular to a progressive mold for a safety belt fixing nut reinforcement plate. Background technique [0002] Figure 1-Figure 2 Shown is the seat belt fixing nut reinforcement plate, the material is DC01, the material thickness is 3mm, and the annual output is 120,000 pieces. The carbon content of the material is ≤10%, the tensile strength is ≥270MPa, the yield strength is 130-260MPa, the elongation after fracture is ≥28%, and the stamping performance is good. The original forming process plan is: blanking, punching → bending, a total of two sets of molds. The first pair of molds adopts a flip-chip composite mold, the rod is unloaded, the parts fall on the lower mold, and the parts are picked up by hand with a magnet. The placement and removal of the second pair of bending die parts also requires a magnet hand. This process mainly has problems such as potential safety hazards in operation, low work efficiency,...

AI Technical Summary

Problems solved by technology

This process mainly has problems such as potential safety hazards in operation, low work efficiency, high machine tool occupancy rate, and unstable part quality.

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