A molding die for automobile exhaust pipe

Abstract

The invention discloses a forming mold for an automobile exhaust pipe, and belongs to the technical field of mold equipment. The forming mold for the automobile exhaust pipe comprises a movable mold set, a fixed mold set, a movable mold cavity, a fixed mold cavity, a shooting moving oil cylinder, a pushing mechanism and a cooling system. The movable mold cavity and the fixed mold cavity are each internally provided with a core bend pipe part and a core straight pipe part, the ends, away from each other, of the core bent pipe parts and the core straight pipe parts are correspondingly and slidably connected into bent pipe grooves and straight pipe grooves, and the core bent pipe parts and the core straight pipe parts are all provided with cooling grooves in a drilled mode. The forming mold facilitates the disassembly of casting parts, realizes the cooling function in the core pulling process, and solves the problem of the forming quality of the exhaust pipe caused by adhesion of impurities in the core pulling process due to poor cooling of a core; and through the real-time monitoring of the pressure in an air pipe, the core bent pipe parts are closely attached to the core straight pipe parts, and at the same time, the leakproofness of the movable mold cavity and the fixed mold cavity can further be ensured.

Description

technical field [0001] The invention relates to the technical field of mold equipment, in particular to a molding mold for an automobile exhaust pipe. Background technique [0002] Mold is a tool for obtaining required products through injection molding, blow molding, extrusion, die-casting and other methods in industry. It has the title of mother of industry, which shows its important position. [0003] After the exhaust pipe is formed by casting molds, the exhaust pipe is usually separated from the mold manually, which is not only cumbersome and inefficient, but also difficult to control the strength, which is easy to deform the exhaust pipe and affect the processing quality. At the same time, it is necessary to cool the mold during the separation process of the exhaust pipe forming part from the mold to ensure that the mold core is not easy to stick to aluminum and ensure the surface roughness of the formed exhaust pipe. Due to the cylindrical structure of the exhaust pip...

AI Technical Summary

Problems solved by technology

[0003] After the exhaust pipe is formed by casting molds, the exhaust pipe is usually separated from the mold manually, which is not only cumbersome and inefficient, but also difficult to control the strength, which is easy to deform the exhaust pipe and affect the processing quality. At the same time, it is necessary to cool the mold during the separation process of the exhaust pipe forming part from the mold to ensure that the mold core is not easy to stick to aluminum and ensure the surface roughness of the formed exhaust pipe. Due to the cylindrical structure of the exhaust pipe, the exhaust Under the action of the ordinary cooling system, the cooling effect of the mold core is different from the outside and the inside. The closer the core is to the inside, the slower the cooling rate, which leads to poor continuous performance of the automobile exhaust pipe casting. At the same time, the exhaust pipe casting During the process, the tightness between the movable mold and the fixed mold is an important standard to ensure the quality of the exhaust pipe molding. In the prior art, the monitoring performance for the tightness of the connection between the movable mold and the fixed mold is lacking.

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