Stretch molding die for the exhaust cone shell of the automobile engine exhaust system

Abstract

The invention provides a stretching forming die for the air outlet taper pipe shell of an automobile engine exhaust system. The stretching forming die can be used for solving the problem that a great quantity of crinkles are formed on the surface of a workpiece after an upper half shell and a lower half shell are subjected to integral stamping forming with materials at present. The stretching forming die for the air outlet taper pipe shell of the automobile engine exhaust system comprises an upper die structure and a lower die structure, wherein the upper die structure comprises an upper template and a forming sinking die; the forming sinking die is installed below the upper template; the lower die structure comprises a lower template, a pressure plate and a forming terrace die; the lower template is installed on a lower mounting plate via lower die feet; the pressure plate is installed on the lower template via a lower base plate; the forming terrace die is installed on the pressure plate; the upper die structure and the lower die structure are subjected to guiding die assembling via an independent rolling guide element. The stretching forming die for the air outlet taper pipe shell of the automobile engine exhaust system is characterized in that rolling rib inserts are respectively symmetrically arranged on two laterals sides and two longitudinal sides of the forming terrace die in the pressure plate.

Description

technical field [0001] The invention relates to the stamping processing field of automobile engine components, in particular to a stretching mold for an exhaust cone casing of an automobile engine exhaust system. Background technique [0002] An automobile engine exhaust system outlet cone casing, its structure is shown in figure 1 , which is applied to the hot end of the automobile engine exhaust system. When installing, one end is connected to the purifier carrier, and the other end is connected to the flange on the engine side. High and low processing efficiency. In order to reduce the processing cost of the part and improve the processing efficiency, the method of stamping is gradually used to produce the part. According to the structural characteristics of the part, the part is divided into the upper half shell 22 and the lower half shell 23 in the stamping process. See figure 2 and image 3 , the process route of the stamping process is to stamp and form the upper...

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Problems solved by technology

[0003] In view of the above problems, the present invention provides a stretching mold for the exhaust cone shell of the automobile engine exhaust system, which can solve the problem of a large number of wrinkles on the surface of the workpiece after the upper half shell and the lower half shell are integrally stamped and formed.

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