Silencer pipe joint forming die

Abstract

The invention discloses a silencer pipe joint forming die which comprises an upper die body and a lower die body. A die handle is arranged in the center of the top end of the upper die body. A male die is arranged in the center of the bottom end of the upper die body. A female die is arranged in the center of the lower die body and corresponds to the male die. Two symmetrically-distributed guide assemblies are arranged between the upper die body and the lower die body. Each guide assembly comprises a guide sleeve and a guide column which are matched and connected in a sleeved mode, wherein the guide sleeve is fixed to the upper die body, and the guide column is fixed to the lower die body. The two sides of the upper die body and the two sides of the lower die body are each provided with a lifting lug. An ejector rod is arranged in the center of the male die. The lower die body is provided with a plurality of evenly-distributed die holder foot pads. The silencer pipe joint forming die overcomes defects of a seamless pipe machining method in the prior art, is convenient to maintain, safe and reliable, and improves production efficiency. The formed products are high in sealing performance after being welded, and the enterprise production cost is lowered.

Description

technical field [0001] The invention relates to the field of forming molds for auto parts, and specifically designs a forming mold for pipe joints of mufflers. Background technique [0002] Automobile muffler is a special device that prevents sound transmission and allows airflow to pass through, and prevents airflow dynamic noise, thereby reducing engine exhaust noise and allowing high-temperature exhaust gas to be discharged safely and effectively. The principle is that its automobile exhaust pipe is composed of two pipes with different lengths, and the two pipes are first separated and then merged. As a part of the exhaust pipe, the muffler should ensure smooth exhaust, low resistance and sufficient strength, so as to ensure that the car will not be damaged or lose its muffler effect when it is subjected to high-temperature exhaust at 500°C~700°C within the specified mileage of the car. Therefore, The inner surface of the exhaust pipe joint of the muffler must be smooth ...

AI Technical Summary

Problems solved by technology

At present, the method of processing pipe joints according to the traditional technology is mainly to directly use the ready-made seamless pipes to process the finished products. Although the products processed by this method also have a certain noise reduction effect when synthesizing the target product parts, the processed products Due to the unreasonable technical design of the pipe joints, the smoothness of the inner pipe surface is not enough, it is easy to cause the sound and airflow transmission part to be smooth, which increases the exhaust noise of the engine, so that the high-temperature exhaust gas cannot be discharged safely and effectively, which not only reduces the The service life of the product affects the normal driving of the car, and also causes low production efficiency, which indirectly increases the production cost of the enterprise

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