Helical spring high pressure water pipe for high pressure water cutting machine having multi-degree of freedom

Abstract

The present invention provides a helical spring high pressure water pipe for a high pressure water cutting machine having multi-degree of freedom, wherein the water pipe belongs to a seamless metal pipe. From the output end of an ultrahigh pressure presser to the input end of a nozzle, the water pipe is winded with a helical spring structure at each joint position, and the axis of the helical spring structure is coincident with or parallel to or approximately parallel to the axis of the rotation or / and moving of the joint. The diameter or / and the number of loops of the helical spring structure is compatible with the rotation or / and moving scope of the joint. The water pipe is a stainless steel seamless pipe. With the helical spring structure, the high pressure water pipe can realize compatible angle change or length change while maintains the normal function of high pressure water conveying under the condition that the joint rotates or moves. The usage of the helical spring high pressure water pipe for the high pressure water cutting machine having the multi-degree of freedom can guarantee that the high pressure water pipe rotates or moves with the joint freely, no wear part exists, no leakage occurs, and technology performance of the high pressure water cutting machine having the multi-degree of freedom is improved.

Description

technical field [0001] The invention relates to a high-pressure water pipe, in particular to a spiral spring high-pressure water pipe used for a multi-degree-of-freedom high-pressure water cutting machine. Background technique [0002] High-pressure water cutting machine is a device that uses water with a pressure of more than 410 MPa to shoot through a nozzle with small holes for cutting. High-pressure water cutting machine can cut soft materials by using pure water, and can cut any material by adding abrasives in water. hard material. The high-pressure water cutting machine has low processing cost, high processing accuracy and high processing efficiency, and the processing process is clean and pollution-free. It is currently one of the cutting methods with the best comprehensive performance in the field of cutting processing. In order to give full play to the advantages of the high-pressure water cutting method, high-pressure water cutting machines are generally made into...

AI Technical Summary

Problems solved by technology

In order to give full play to the advantages of the high-pressure water cutting method, high-pressure water cutting machines are generally made into multi-degree-of-freedom CNC cutting devices. The water pipes in the high-pressure water cutting machine need to be equipped with rotary joints or movable joints at various joints, but due to the relatively frictional sealing elements of the rotary joints or movable joints, the service life is not long under high-pressure working conditions, and frequent shutdowns are required for maintenance and maintenance. Replacement, which seriously affects the performance of the high pressure water jetting machine

In order to prolong the maintenance period of the high-pressure water cutting machine, some high-pressure water cutting machines use bendable high-pressure hoses instead of rotary joints or moving joints to realize the rotation or movement of the water pipes at the joints, but because the high-pressure hoses are made of flexible materials , despite the addition of reinforcement measures such as metal braids, high-pressure hoses still inevitably have problems such as easy deformation or rupture, and significantly reduced high-pressure water injection performance, resulting in the high-pressure water delivery of multi-degree-of-freedom high-pressure water cutting machines. cannot be satisfactorily resolved

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