Pre-drilling device for internal high pressure forming pipe fittings

Abstract

The invention relates to a pre-drilling device for internal high pressure forming pipe fittings. The pre-drilling device is arranged between a heating furnace and a punching station; the pipe fittingsheated by the heating furnace are conveyed to a sieving platform; the sieving platform is arranged obliquely; a pushing oil cylinder is arranged on one side of the tail end of the sieving platform; the pipe fitting at the tail end of the sieving platform is pushed to a feeding track by the pushing oil cylinder; the feeding track conveys the pipe fitting to a pre-drilling platform; the pre-drilling platform is arranged obliquely; a stopping platform is arranged at the tail end of the pre-drilling platform; and a pre-drilling device body is fixed on one side of the stopping plate. The pre-drilling device for internal high pressure forming pipe fittings is arranged between the heating furnace and the punching station, when the heated pipe fitting are transferred on the pre-drilling platform,a positioning blind hole is drilled in a tip of each heated pipe fitting, thus, the positioning effect for follow-up punching is achieved, it can be ensured that a central hole is not eccentric, thequality of finished pipe fittings is ensured, online punching can further be carried out during production, and it can be ensured that the production efficiency is not affected.

Description

technical field [0001] The invention relates to a pre-drilling device, which can pre-drill light-weight and high-strength solid pipe fittings, is mainly used in automobiles, and belongs to the technical field of metal product production technology. Background technique [0002] The domestic automobile industry has been using processes such as thermoforming, welding, shaping, and surface treatment to manufacture special-shaped tube parts. Its performance and manufacturing quality are significantly lower than those of German, British and American products. The quality of the products is unstable and the service life is short. [0003] Internal high pressure forming technology is a new forming technology invented by the United States and Germany in the 1990s. It was first applied in the manufacture of aerospace satellite launchers, aircraft oil circuit systems and other parts, and was quickly extended to automobiles, rail vehicles and other industries to solve the problem of T...

AI Technical Summary

Problems solved by technology

[0004] The inner high pressure forming pipe fittings need to punch the center hole after being heated in the heating furnace. However, when the pipe fittings are punched in the center hole (on-line punching) during production, due to the rotary feeding, the punching device cannot guarantee that the hole is facing the end of the pipe fitting. The most central, resulting in eccentricity in the center hole, which affects the quality of the finished pipe fittings

Taking the pipe fittings out of the production line to punch the center hole (offline punching) reduces the production efficiency

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