Connecting strengthening plate multi-station progressive die

Abstract

The invention discloses a connecting strengthening plate multi-station progressive die. The connecting strengthening plate multi-station progressive die comprises a jigger pin assembly I, a jigger pin assembly II, an equal-height sleeve assembly, an ejector block, an upper spring, a spring fixing base, a jacking block assembly, a lower die base, a retainer plate, a punching male die, a lower spring, an elastic lifting pin assembly, a pilot pin, a male die fixing plate, a stripper plate and a sliding guide column assembly. The invention meanwhile discloses a connecting strengthening plate machining technology. The technology comprises 12 work steps including the first step of auxiliary hole punching, the second step of long hole punching, the third step of trimming, the fourth step of upward edge folding and pre-bending by 45 degrees, the fifth step of downward edge folding, the sixth step of downward edge folding and pre-bending by 45 degrees, the seventh step of upward edge folding, the eighth step of end cutting, the ninth step of no operation, the tenth step of downward edge folding, the eleventh step of no operation and the twelfth step of cutting out. According to the connecting strengthening plate multi-station progressive die, die positioning, floating jacking, unloading and discharging are good, the manufacturability is good, and the requirement for high-speed and precision production can be met; and the production efficiency is improved, the production cost is reduced, the product precision requirement is guaranteed, and benefits are obvious by the adoption of the progressive die form for multi-time edge folding formed components.

Description

technical field [0001] The invention relates to the technical field of mold manufacturing, in particular to a multi-station progressive mold for connecting reinforcement plates. Background technique [0002] figure 1 It is a connecting reinforcement plate part for automobiles, the material is cold-rolled steel DC01, the thickness of the material is 2.0 mm, the external dimensions are 100.5 mm × 65 mm × 37 mm, and there is no hole in the part. This part has multiple 90-degree folded edges, which require high precision. The surface profile tolerance at A, B, and C does not exceed 0.5 mm, and the rest of the surface profile tolerance does not exceed 2 mm. This part is prone to springback defects. [0003] The processing of connecting reinforcement plate parts is formed by stamping dies. However, only ordinary stamping dies, such as single-process dies or compound dies, need to be completed in multiple processes. After stamping is formed in different dies for many times, the s...

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Problems solved by technology

However, only ordinary stamping dies, such as single-process dies or compound dies, need to be completed in multiple processes. After stamping is formed in different dies for many times, the surface quality of the workpiece is not high, the operability is average, and the production efficiency is low, which is difficult to meet. In order to meet the needs of mass production, it is necessary to provide a multi-station progressive mold for connecting reinforcement plates to overcome the above defects

[0004] According to the current traditional stamping process plan, the parts connecting the reinforcement plate adopt the form of single-moving die or compound die, which requires at least two bendings, and the connection of the reinforcement plate requires at least 3 processes, which are blanking, first bending, and second bending , it needs 3 pairs of molds and 3 punching machines to complete, at least 3 workers are required, and the production efficiency is low; in addition, according to the traditional solution, the outer edge is positioned during bending, the positioning effect is not good, and there is no upper mold or lower mold pressing material, The springback is relatively large, the space for mold adjustment is small, and the product quality is average; in addition, the rectangular strips are produced on a manual line with a shearing machine, and there are edges around the blanking, and the material utilization rate is not high. Efficient Production Requirements

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