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Special-shaped steel pipe free-grabbing drawing system and drawing method thereof
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A technology for special-shaped steel tubes and tube blanks, which is applied to wire drawing dies and other directions, can solve the problems of material waste and steel tube deformation, and achieve the effect of saving tube blank materials, compact structure and avoiding cutting.
Active Publication Date: 2021-04-02
江苏君睿智能制造有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to solve the problem in the prior art that one end of the steel pipe needs to be clamped with a clamp when the special-shaped steel pipe is cold-drawn. A special-shaped steel pipe free-grabbing drawing system and drawing method thereof
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Embodiment 1
[0042] Special-shaped steel pipe grab-free pulling system, including mechanical parts and control parts.
[0043] Specifically, refer to figure 1 and figure 2, the mechanical part of the pulling system in this embodiment includes a frame 1, a fixed limit seat 2 fixed on the frame 1, a movable limit seat 3 slidingly connected to the frame 1, and a die set assembly, the die set The assembly is located between the fixed limit seat 2 and the movable limit seat 3, and the mold cover assembly includes an outer mold cover 4 and an inner mold cover 5, and the fixed limit seat 2 and the movable limit seat 3 are both provided with an inner mold The through hole through which sleeve 5 passes.
[0044] Further, both ends of the inner mold cover 5 are fixedly connected to the toothed bars 7, the inner molded cover 5 and the toothed bars 7 form a closed loop, and the rack is provided with a gear 8 meshing with the toothed bars 7 , the gear 8 is rotatably connected with the frame 1 throu...
Embodiment 2
[0060] refer to image 3 , different from Embodiment 2, the fixed limit seat 2 in this embodiment includes a sleeve 21 fixedly connected with the frame 1, an adjustment cylinder 22 and a contact block 23 in contact with the tube blank 10, the number of contact blocks 23 The multi-piece contact block 23 forms a through hole for fixing the limit seat 2 , and the adjusting cylinder 22 is located between the inner edge of the sleeve 21 and the contact block 23 .
[0061] It is worth noting that, image 3 To refer to the schematic diagram, since there are many cross-sectional shapes of the special-shaped pipe, this reference schematic diagram is one of them, and the cross-section of the special-shaped pipe used in the pulling device in the present invention is not limited to this one.
[0062] In this example, refer to Figure 4 , the adjusting cylinder 22 includes a cylinder 221, a piston 222, a connecting pipe 223 and a movable rod 225, the inside of the cylinder 221 is provide...
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Abstract
The invention discloses a special-shaped steel pipe grabbing-free drawing system and a drawing method thereof, and belongs to the technical field of special-shaped steel preparation. The drawing system comprises a mechanical part and a control part, the mechanical part limits the two ends of a steel pipe, a die sleeve assembly moves, and axial drawing machining is conducted on the special-shaped pipe; a pipe gripper or a pipe clamp part in an existing drawing device can be omitted, the problem that pipe end forming is uneven due to gripping and clamping of the pipe wall is solved, the end of apipe blank is prevented from being cut off, and pipe blank materials are saved; and meanwhile, the die sleeve assembly of the special-shaped steel drawing device can synchronously move an outer die sleeve and an inner die sleeve to accurately draw the special-shaped pipe, the outer die sleeve and the inner die sleeve share one driving source, and the structure is compact.
Description
technical field [0001] The invention relates to the technical field of preparation of special-shaped steel pipes, in particular to a non-catch drawing system and a drawing method for special-shaped steel pipes. Background technique [0002] With the higher requirements for steel pipes in construction machinery, marine oil and other industries, high-precision, high-performance cold-drawn special-shaped pipes have begun to be widely used. When the steel pipe is cold-drawn by the conventional method, since one end of the steel pipe needs to be clamped with a clamp during cold-drawing, the size and shape of this section of steel pipe will change after cold-drawing, and the material of this section will be Cut off as waste, resulting in a certain amount of material loss. Contents of the invention [0003] The purpose of the present invention is to solve the problem in the prior art that one end of the steel pipe needs to be clamped with a clamp when the special-shaped steel pi...
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