Pneumatic hammer

Abstract

The invention discloses a pneumatic hammer. The pneumatic hammer comprises a body, a shell body arranged outside the body, a cavity body formed in the body, a movable punch arranged in the cavity body, a pneumatic punch pin arranged at the bottom of the body, an air inlet pipeline and air outlets, wherein the air inlet pipeline and the air outlets communicate with the cavity body, the cavity body is divided into an upper cavity body and a lower cavity body, the area of the cross section of the upper cavity body is larger than that of the cross section of the lower cavity body, and step-shaped bosses are formed at the joint of the upper cavity body and the lower cavity body; air inlets of the air inlet pipeline communicate with the upper cavity body, and the air outlets communicate with the lower cavity body; and the movable punch comprises a top piston and a bottom piston, an upper cylinder body which is relatively sealed is formed between the top piston and the top of the shell body, and a lower cylinder body which is relatively sealed is formed between the bottom piston and the top of the movable punch. The pneumatic hammer can do reciprocating stamping motion under long-time and high-frequency working conditions without a spring, and the pneumatic hammer is high in punching pressure, low in work failure rate under the long-time and high-frequency working conditions, and high in production efficiency.

Description

technical field [0001] The invention relates to technical fields such as system injection molding equipment, hot runner systems, injection mold industry, numerical control machine tool industry, etc., and specifically relates to a pneumatic hammer for stamping heating wire devices or tools in a manifold. Background technique [0002] In the existing technology, the stamping heating wire in the manifold is realized by manual crimping or ordinary air hammer. Due to the high frequency of action, the ordinary air hammer needs to replace the spring frequently, which is time-consuming and low in work efficiency; therefore, a This kind of device or tool can do reciprocating stamping under the condition of high frequency and long time without spring, stamping the heating wire into the splitter plate and can compress the heating wire. [0003] In the process of stamping the heating wire, the frequency of the impact speed is not high. When the stamping force is small and the high freq...

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Problems solved by technology

[0002] In the existing technology, the stamping heating wire in the manifold is realized by manual crimping or ordinary air hammer. Due to the high frequency of action, the ordinary air hammer needs to replace the spring frequently, which is time-consuming and low in work efficiency; therefore, a This kind of device or tool can do reciprocating stamping under the condition of high frequency and long time without the need of spring, stamping the heating wire into the splitter plate and compressing the heating wire

[0003] In the process of stamping the heating wire, the frequency of the impact speed is not high. When the stamping force is small and the high frequency works for a long time, the parts such as springs are easily fatigued and damaged. Therefore, the frequency of replacing parts is high and the cost increases. At the same time, it takes a long time to replace parts, resulting in low production efficiency. high

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