Seamless steel tube cold-drawing chuck

Abstract

The utility model relates to the technical field of cold drawing, in particular to a seamless steel tube cold-drawing chuck which comprises a base, a bidirectional telescopic rod is fixedly connected to the base, inner abutting plates are fixedly connected to the two ends of the bidirectional telescopic rod, a bidirectional threaded rod is rotatably connected to the base through a bearing, and the inner abutting plates are fixedly connected to the two ends of the bidirectional telescopic rod. The two ends of the two-way threaded rod are in threaded connection with outer abutting plates, the outer abutting plates correspond to the inner abutting plates in position, and limiting mechanisms are arranged on the outer abutting plates. The steel pipe cold-drawing device has the advantage that the pipe orifice of the steel pipe is prevented from deforming when the steel pipe is subjected to fixed cold-drawing.

Description

Technical Field

[0001] The utility model relates to the technical field of cold drawing, in particular to a cold drawing chuck for a seamless steel pipe. Background Art

[0002] Cold drawing is a material processing technology. For metal materials, cold drawing refers to drawing the material at room temperature in order to achieve a certain shape and certain mechanical properties. When seamless steel pipes are produced, the drawing process is required. The steel pipe is clamped and fixed by using a chuck. Generally, the inner wall or outer wall of the steel pipe is abutted against each other, and the steel pipe is clamped and fixed, resulting in the inner and outer walls of the steel pipe being subjected to separate forces, which leads to deformation of the steel pipe mouth. Utility Model Content

[0003] The utility model aims to solve the defect in the prior art that the inner and outer walls of the steel pipe are stressed separately, thus causing the steel pipe mouth to be deformed, and proposes a seamless steel pipe cold drawing chuck.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A seamless steel pipe cold-drawn chuck is designed, comprising a base, to which a bidirectional telescopic rod is fixedly connected, both ends of the bidirectional telescopic rod are fixedly connected with inner abutment plates, a bidirectional threaded rod is rotatably connected to the base through a bearing, both ends of the bidirectional threaded rod are threadedly connected with outer abutment plates, the outer abutment plate corresponds to the inner abutment plate in position, and a limiting mechanism is arranged on the outer abutment plate.

[0006] Preferably, the limiting mechanism comprises a fixing sleeve, the fixing sleeve is fixedly connected to the base, both ends of the fixing sleeve can be plugged with limiting rods, and the two limiting rods respectively penetrate the two outer abutment plates.

[0007] Preferably, one end of the two limit rods is fixedly connected with a pulling portion.

[0008] Preferably, the other end of the limiting rod is fixedly connected with a magnet, the fixing sleeve is made of iron material, and the magnet can extend into the fixing sleeve.

[0009] Preferably, a torsion portion is fixedly connected to the bidirectional threaded rod, and the torsion portion is in a regular hexagon.

[0010] Preferably, anti-slip grooves are provided on the relative inner surfaces of the outer abutment plate and the inner abutment plate.

[0011] Preferably, the bidirectional telescopic rod is a bidirectional hydraulic telescopic rod.

[0012] The utility model proposes a seamless steel pipe cold drawing chuck, which has the beneficial effect that the position of the outer abutment plate on the bidirectional threaded rod is adjusted by rotating the bidirectional threaded rod, so that the outer wall of the steel pipe is abutted and fixed. Since the fixed position of the inner wall of the steel pipe corresponds to the outer wall, the pipe mouth of the steel pipe is prevented from being deformed when the steel pipe is fixedly cold drawn. Since double-layer fixation is adopted, the fixing effect of the steel pipe is also guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a structural schematic diagram of a cold-drawn chuck for a seamless steel pipe proposed by the utility model;

[0014] Figure 2 A three-dimensional diagram of a cold-drawn chuck for a seamless steel pipe proposed by the utility model;

[0015] Figure 3 The utility model is a schematic structural diagram of a limit rod portion of a cold-drawn chuck for a seamless steel pipe.

[0016] In the figure: base 1, bidirectional threaded rod 2, torsion part 3, limit rod 4, fixing sleeve 5, pulling part 6, bidirectional telescopic rod 7, outer abutment plate 8, steel pipe 9, inner abutment plate 10, magnet 11. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Example 1

[0019] Reference Figure 1-3 A seamless steel pipe cold-drawn chuck comprises a base 1, to which a bidirectional telescopic rod 7 is fixedly connected. The bidirectional telescopic rod 7 is a bidirectional hydraulic telescopic rod. Both ends of the bidirectional telescopic rod 7 are fixedly connected with inner abutment plates 10. The bidirectional telescopic rod 7 is extended to drive the inner abutment plate 10 to move, so that the inner abutment plate 10 abuts against the steel pipe 9 to fix the inner wall of the steel pipe 9.

[0020] The relative inner surfaces of the outer abutment plate 8 and the inner abutment plate 10 are both provided with anti-slip grooves to increase the roughness, which is beneficial to the fixing effect during clamping.

[0021] A bidirectional threaded rod 2 is rotatably connected to the base 1 through a bearing, and both ends of the bidirectional threaded rod 2 are threadedly connected with an outer abutment plate 8, and the outer abutment plate 8 corresponds to the inner abutment plate 10 in position. A limiting mechanism is provided on the outer abutment plate 8, and the position of the outer abutment plate 8 on the bidirectional threaded rod 2 is adjusted by rotating the bidirectional threaded rod 2, so that the outer wall of the steel pipe 9 is abutted and fixed. Since the fixed positions of the inner wall and the outer wall of the steel pipe 9 correspond, the pipe mouth of the steel pipe 9 is prevented from being deformed when the steel pipe 9 is fixed and cold drawn. Since double-layer fixation is adopted, the fixing effect of the steel pipe 9 is also guaranteed.

[0022] When the two-way telescopic rod 7 is extended, the inner abutment plate 10 is driven to move. Since the outer abutment plate 8 is located on the outer side of the inner abutment plate 10, it is easy for the inner abutment plate 10 to drive the outer abutment plate 8 to move, resulting in damage to the threaded connection between the outer abutment plate 8 and the two-way threaded rod 2. In the state where the steel pipe 9 is not inserted, when the two-way telescopic rod 7 is extended, the limiting rod 4 is pulled out, that is, the limiting of the outer abutment plate 8 is released, and the outer abutment plate 8 is rotated to avoid the inner abutment plate 10 moving outward to drive the outer abutment plate 8 to move, resulting in damage to the threaded connection.

[0023] When in use, the bidirectional telescopic rod 7 is extended to drive the inner abutment plate 10 to move, so that the inner abutment plate 10 abuts against the steel pipe 9, and then the bidirectional threaded rod 2 is rotated to adjust the position of the outer abutment plate 8 on the bidirectional threaded rod 2 to fix the outer wall of the steel pipe 7.

[0024] Example 2

[0025] In embodiment 1, since the limiting rod 4 is inserted, it is easy to cause the limiting rod 4 to fall off and be lost. Figure 1-3 As another preferred embodiment of the utility model, on the basis of embodiment 1, one end of the two limit rods 4 is fixedly connected with the pulling part 6. The other end of the limit rod 4 is fixedly connected with the magnet 11, the middle part of the fixing sleeve 5 is solid to prevent the two magnets 11 from affecting each other, the fixing sleeve 5 is made of iron material, and the magnet 11 can extend into the fixing sleeve 5. By adopting the design of the magnet 11, the limit rod 4 can be fixed to avoid loss, and it is also convenient and quick to pull out the limit rod 4 when it is necessary.

[0026] Example 3

[0027] Reference Figure 1-3As another preferred embodiment of the utility model, on the basis of embodiment 1, a torsion portion 3 is fixedly connected to the bidirectional threaded rod 2, and the torsion portion 3 is a regular hexagon, so that the torsion portion 3 can be clamped by a wrench to drive the bidirectional threaded rod 2 to rotate, thereby preventing the bidirectional threaded rod 2 from being directly clamped and causing damage to the bidirectional threaded rod 2.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A seamless steel pipe cold drawing chuck, comprising a base (1), characterized in that: A bidirectional telescopic rod (7) is fixedly connected to the base (1), and both ends of the bidirectional telescopic rod (7) are fixedly connected to inner abutment plates (10). A bidirectional threaded rod (2) is rotatably connected to the base (1) via a bearing, and both ends of the bidirectional threaded rod (2) are threadedly connected to outer abutment plates (8), the outer abutment plates (8) correspond in position to the inner abutment plates (10), and a limiting mechanism is provided on the outer abutment plates (8).

2. A seamless steel pipe cold drawing chuck according to claim 1, characterized in that: The limiting mechanism comprises a fixing sleeve (5), the fixing sleeve (5) being fixedly connected to the base (1), and limiting rods (4) can be inserted into both ends of the fixing sleeve (5), and the two limiting rods (4) respectively penetrate the two outer abutment plates (8).

3. A seamless steel pipe cold drawing chuck according to claim 2, characterized in that: One end of each of the two limiting rods (4) is fixedly connected to a pulling portion (6).

4. A seamless steel pipe cold drawing chuck according to claim 3, characterized in that: The other end of the limiting rod (4) is fixedly connected to a magnet (11); the fixing sleeve (5) is made of an iron material; and the magnet (11) can extend into the fixing sleeve (5).

5. A cold-drawn chuck for seamless steel pipe according to any one of claims 1 to 4, characterized in that: A twisting portion (3) is fixedly connected to the bidirectional threaded rod (2), and the twisting portion (3) is in a regular hexagon.

6. A seamless steel pipe cold drawing chuck according to claim 5, characterized in that: The opposing inner surfaces of the outer abutment plate (8) and the inner abutment plate (10) are both provided with anti-slip grooves.

7. The cold-drawn chuck for seamless steel pipe according to claim 1, characterized in that: The bidirectional telescopic rod (7) is a bidirectional hydraulic telescopic rod.

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