Necking machine for copper pipe

Abstract

The invention provides a necking machine for copper pipes, which comprises a hydraulic ram, a hand-operated direction valve, a locking clamp, a support seat and a control box which are installed on a workbench, wherein the central line of the locking clamp is consistent with that of the hydraulic ram; the hydraulic ram is provided with a shaft which extends out of the outer end of the hydraulic ram and forms a slide fit with an inner hole of the support seat; a necking mold is installed and connected to the shaft end; and the aperture gradually increases from inside to outside with smooth transitions from the outer section of the inner hole of the inner sleeve of the necking mold to the outer end surface. The locking clamp comprises a bottom seat, a bracket, a lower clamping block, an upper clamping block, a screw mandrel and a handle which are fixedly connected with the workbench, wherein the bracket comprises a transverse beam and a vertical slide rail; the screw mandrel is fixedly connected with the handle and passes through a screw hole arranged in the transverse beam to support against the upper surface of the upper clamping block; a spring is arranged between the upper clamping block and the lower clamping block; and the contact surface of the upper clamping block and the lower clamping block is provided with a groove in which a copper pipe can be arranged. The necking machine for copper pipes has the advantages of simple structure and convenient operation and is especially suitable for the requirements of mass production.

Description

technical field [0001] The invention relates to the technical field of no-cut machining, in particular to a copper tube shrinking machine capable of reducing the diameter of the copper tube. Background technique [0002] In the existing industrial products and daily-use products, it is often encountered that pipes of different diameters are connected together. Generally, joints are used to connect, and joint connections will cause leakage problems. In many cases, leakage is not allowed. It can only be used to add tapered pipes in the middle of pipes with different diameters, and then use welding at both ends to weld the pipes with different diameters into one. This will increase the process and bring inconvenience to production. For mass production, it is even more difficult is an increase in cost. Contents of the invention [0003] The object of the present invention is to provide a copper tube shrinking machine with simple structure and convenient operation, which can r...

AI Technical Summary

Problems solved by technology

[0002] In the existing industrial products and daily-use products, it is often encountered that pipes of different diameters are connected together. Generally, joints are used to connect, and joint connections will cause leakage problems. In many cases, leakage is not allowed. It can only be used to add tapered pipes in the middle of pipes with different diameters, and then use welding at both ends to weld the pipes with different diameters into one. This will increase the process and bring inconvenience to production. For mass production, it is even more difficult is an increase in cost

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