Hydraulic cold drawn pipe machine

Abstract

The invention discloses a hydraulic cold tube drawing bench, which comprises a main cylinder seat, a drawing die seat, a clamping dolly which is arranged between the main cylinder seat and the drawing die seat and is driven by a main cylinder, a core rod seat used for penetrating a positioning core rod, and an end which is fixedly connected with the main cylinder seat, the drawing die seat and the core rod seat sequentially on two independent section lathe beds; the main cylinder seat, the lathe bed, the drawing die seat, the lathe bed and the core rod seat are axially arranged. The inventionis characterized in that: the lower parts of the main cylinder seat, the core rod seat and the lathe beds are all provided with lateral displacement limit devices containing concave positioning grooves; the concave positioning groove consists of a bottom plate and two side baffles or consists of L-shaped pieces formed by a bottom plate and side baffles and arranged symmetrically along the longitudinal axis. The lateral displacement limit devices are fixedly connected with groundwork. The invention has the advantages that: by using the simple structure, the invention effectively overcomes compression deformation of the lathe beds, and has low cost, convenient installment and low requirement for the ground which can be widely applied to metallurgical industry to reduce or expand pipe blanks.

Description

technical field [0001] The invention relates to a metal pipe cold drawing equipment used in the metallurgical industry, in particular to a hydraulic cold drawing machine which uses hydraulic pressure as a power source to reduce, expand or reduce the wall of a tube blank. Background technique [0002] In the metallurgical industry, the production of cold drawn metal pipes is the secondary processing of metal pipes after hot rolling and extrusion; the hydraulic cold drawn pipe machine is to make metal pipes such as hot rolled seamless metal pipes or straight seam welded pipes The finished pipes produced without cutting and precise wall thickness meet the actual needs; compared with the mechanical transmission cold drawing machine, the hydraulic cold drawing machine has high precision, large pulling force, low energy consumption, high production efficiency and The equipment has advantages such as simple structure, and is more and more widely used; for example, Chinese invention...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a practical solution for the current hydraulic cold-drawn pipe machine to be fixedly connected to the solid foundation of concrete casting through anchor bolts, and the foundation, anchor bolts, and bed during work require high compressive strength and rigidity. A hydraulic cold-drawn pipe machine with a simple structure, which can effectively overcome the compression deformation of the bed, has low requirements for the foundation, is low in cost, and is easy to install

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