An integrated plug for internal high pressure

Abstract

The invention discloses an integrated plug for internal high pressure. The integrated plug comprises a plug body. A flow channel is formed in the plug body. An inlet of the flow channel is formed in the outer side wall of the plug body, and an outlet of the flow channel is formed in the end of the plug body. The flow channel comprises an axial part and a radial part. The axial part comprises a first horizontal segment, a second horizontal segment and a third horizontal segment. A first conical step surface is formed between the first horizontal segment and the second horizontal segment, and a second conical step surface is formed between the second horizontal segment and the third horizontal segment. A first one-way valve is arranged in the axial part and comprises a steel ball, a spring and a valve body. The steel ball is arranged on the first conical step surface in an attached mode, the valve body is arranged on the third horizontal segment, the rear end of the valve body is attached to the inner wall of the third horizontal segment, the front end of the valve body is closely attached to the second conical horizontal surface, and the spring is clamped between the steel ball and the valve body.

Description

technical field [0001] The invention relates to a plug for internal high pressure forming, in particular to an integrated plug for internal high pressure with a check valve inside, which is convenient to replace the check valve, can improve production efficiency, and can expand The diameter of the water channel increases the water flow, and the one-way valve inside also improves the sealing and safety of the plug. Background technique [0002] The plug for internal high pressure is one of the necessary parts in the high pressure forming process. It has the functions of pushing the pipe fittings inward and serving as a medium for liquid to enter and exit the pipe fittings. One end of the plug is fixedly installed on both sides of the high pressure mold. On the hydraulic cylinder on the side, during the forming process, the hydraulic cylinder can provide the driving force to drive the plug to push inward. The other end of the plug extends into the inner high-pressure mold and ...

AI Technical Summary

Problems solved by technology

[0004] 1. The flow rate is small and the diameter of the plug is limited. If the water inlet diameter of the one-way valve is set too large, the inner wall of the plug at this position will be too thin and the pressure bearing capacity will decrease. Therefore, for safety, the one-way valve The water inlet diameter is usually relatively small, which limits the water flow;

[0005] 2. The safety is not high. The process of internal high pressure forming is a process of extruding workpieces with ultra-high internal pressure. In this process, it is necessary to continuously replenish fluid inside the pipe fittings through a high-pressure source to pressurize. At this time The one-way valve is also subjected to great reverse liquid pressure. Once the liquid pressure exceeds the limit of the one-way valve, it is easy to cause the one-way valve to pop up or burst, causing danger;

[0006] 3. Poor sealing under ultra-high pressure

Under high pressure, the material will expand and deform, and the deformation will cause a gap in the position of the one-way valve, causing high pressure leakage

[0007] 4. When replacing the one-way valve, it may be difficult to operate due to the problem of position and space, which will affect the utilization rate of equipment and reduce production efficiency.

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