Production line of resistance silencing tube for vehicle

Abstract

The invention discloses a production line of a resistance silencing tube for a vehicle. The production line of the resistance silencing tube for the vehicle comprises a lower die holder, an upper die holder and a die handle. A punch fixing plate and guide rods are arranged on the bottom part of the upper die holder; a punch is arranged on the bottom part of the punch fixing plate; the upper end of the punch penetrates through the punch fixing plate; an emptying plate and guide sleeves matched with the guide rods are fixed to the lower die holder; a punched hole matched with the punch is formed in the emptying plate; a plurality of through holes are formed in side walls of the guide sleeves; the inside and the outside of each guide sleeve communicate through the through holes; and the lower ends of the guide rods stretch into the guide sleeves in a sliding way. According to the production line of the resistance silencing tube for the vehicle provided by the invention, the through holes are formed in the guide sleeves, so that compressed air or negative pressure cannot be formed inside the guide sleeves, air pressures inside and outside the guide sleeves are consistent during the vertical movement process of the upper die holder, and not only are the problems that the bore diameter of a workpiece formed through punching does not meet the specification, burrs exist around a hole, and the product quality is low since the impact force of the punch on the workpiece to be punched is reduced solved, but also a punch press is prevented from being damaged during the manufacturing process.

Description

technical field [0001] The invention relates to a sound-absorbing pipe manufacturing equipment, in particular to a production line of a vehicle-used resistant sound-absorbing pipe. Background technique [0002] Until now, people are still debating whether Mercedes-Benz or Daimler made the first car in human history. But there is no doubt that with the emergence of automobiles, people's lives are more convenient and travel is more convenient, and the world has become smaller because of this. The technological innovation of automobiles is changing with each passing day in modern times. Among the many new technologies, the appearance of mufflers has greatly reduced the noise of automobile engines, making the travel of automobiles much quieter. [0003] A car's muffler reduces engine exhaust noise. In addition, as a part of the exhaust pipe, the muffler also needs to have sufficient strength and minimize exhaust resistance. According to the principle and structure of mufflers...

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is aimed at the shortcomings of traditional punching dies, and the purpose is to provide a production line for automotive resistant muffler pipes, which solves the problem of damage to the punching machine and the die due to the obstruction of the compressed air during the downward movement of the upper die base. As well as the problems of weakened punch impact force, incomplete punching, and low product quality

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