Straightening equipment for cold drawn pipe production

Abstract

The utility model discloses straightening equipment for cold-drawn pipe production, which relates to the technical field of cold-drawn pipe straightening and comprises a bottom plate, a limit column is fixed on the upper end face of the bottom plate, a limit hole is arranged at the top of the limit column, and a heating coil is mounted on the upper end face of the bottom plate and positioned on one side of the limit column. A support is installed on the upper end face of the bottom plate and located on one side of the heating coil, an extrusion structure is installed on the support, a correcting mechanism is installed on the upper end face of the bottom plate and located on the other side of the limiting column, the support comprises a U-shaped plate fixed to the upper end of the bottom plate, and a first hydraulic push rod is installed on the lower end face of the horizontal section of the U-shaped plate. According to the cold-drawn pipe straightening device, the bending degree of the cold-drawn pipe is reduced by pre-treating the part, with the large bending degree, of the cold-drawn pipe, then the cold-drawn pipe is heated, the stress in the cold-drawn pipe can be reduced, and finally the cold-drawn pipe is extruded, so that the cold-drawn pipe is assisted to be straightened, and the straightening effect of the cold-drawn pipe is greatly improved; and the cold-drawn pipe is prevented from being bent again after being straightened, and the practicability is good.

Description

Technical Field

[0001] The utility model relates to the technical field of cold-drawn tube straightening, in particular to straightening equipment for cold-drawn tube production. Background Art

[0002] Cold drawn steel pipe is a type of steel pipe, that is, it is classified according to different production processes. It is different from hot rolled pipe and is made through multiple cold drawing processes during the process of expanding the diameter of the rough pipe or raw pipe.

[0003] Recycled and reused cold-drawn steel tubes need to be straightened again. However, after a period of time, the cold-drawn tubes will deform and bend slightly again due to the internal stress of the existing straightening device after straightening, which seriously affects their reuse. Therefore, a straightening device for cold-drawn tube production is provided. Utility Model Content

[0004] In response to the deficiencies of the prior art, the utility model provides a straightening device for cold-drawn tube production. By pre-treating the parts of the cold-drawn tube with a larger degree of bending, the bending degree of the cold-drawn tube is reduced, and then the cold-drawn tube is heated to reduce the stress inside the cold-drawn tube. Finally, the cold-drawn tube is extruded to assist in straightening the cold-drawn tube, which greatly improves the straightening effect of the cold-drawn tube and avoids the cold-drawn tube from bending again after straightening. It has good practicality and overcomes the deficiencies of the prior art.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A straightening device for cold-drawn tube production includes a base plate, a limiting column is fixed on the upper end surface of the base plate, a limiting hole is opened on the top of the limiting column, a heating coil is installed on the upper end surface of the base plate and on one side of the limiting column, a bracket is installed on the upper end surface of the base plate and on one side of the heating coil, an extrusion structure is installed on the bracket, and a correction mechanism is installed on the upper end surface of the base plate and on the other side of the limiting column.

[0007] As a further solution of the present invention: the bracket includes a U-shaped plate fixed to the upper end of the base plate, and a first hydraulic push rod is installed on the lower end surface of the horizontal section of the U-shaped plate.

[0008] As a further solution of the present utility model: the extrusion structure includes a first U-shaped seat connected to the lower end of the first hydraulic push rod, and a second U-shaped seat is provided on the upper end surface of the base plate and below the first U-shaped seat. Extrusion wheels are rotatably installed on the inner sides of the first U-shaped seat and the second U-shaped seat, and servo motors are installed on the outer walls of the first U-shaped seat and the second U-shaped seat, and the two servo motors are respectively connected to the two extrusion wheels.

[0009] As a further solution of the present invention: a connecting rod is fixed to the bottom of the inner wall of the second U-shaped seat, the middle part of the connecting rod is connected to the second hydraulic push rod, and a support rod is fixed to the upper end surface of the base plate.

[0010] As a further solution of the present invention: an arc-shaped supporting groove is provided at the top end of the second hydraulic push rod.

[0011] As a further solution of the present invention: the correction mechanism includes a third hydraulic push rod fixed on the upper end surface of the base plate, the upper end of the third hydraulic push rod is connected to a U-shaped rod, and fourth electric push rods are respectively fixed to the inner walls on both sides of the opposite sides of the U-shaped rod, and the opposite ends of the two fourth electric push rods are connected to arc-shaped splints.

[0012] As a further solution of the present invention: vertical plates are fixed on the upper end surface of the bottom plate and on both sides of the U-shaped rod, and strip holes are opened on the two vertical plates. Sliders are fixed on the outer walls of both sides of the U-shaped rod, and the two slides are slidably engaged with the two strip holes respectively.

[0013] As a further solution of the present invention: the limiting hole and the top of the heating coil are at the same height.

[0014] The beneficial effects of the utility model are:

[0015] By pre-treating the parts of the cold-drawn tube with a larger degree of bending, reducing the maximum bending degree of the cold-drawn tube, and then heating the cold-drawn tube, the stress inside the cold-drawn tube can be reduced. Finally, the cold-drawn tube is extruded to assist in straightening the cold-drawn tube, which greatly improves the straightening effect of the cold-drawn tube and avoids the cold-drawn tube from bending again after straightening, and has good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a first-perspective three-dimensional structural schematic diagram of a straightening device for cold-drawn tube production proposed by the utility model.

[0017] Figure 2 This is a schematic diagram of the third perspective structure of a straightening device for cold-drawn tube production proposed by the present invention.

[0018] Figure 3 This is a schematic diagram of the third-perspective stereoscopic structure of a straightening device for cold-drawn tube production proposed by the utility model.

[0019] Figure 4 This utility model proposes a straightening device for cold drawn tube production Figure 3 Enlarged structural diagram at point A in the middle.

[0020] In the figure: 1. Base plate; 2. Support rod; 3. Second U-shaped seat; 4. First U-shaped seat; 5. First hydraulic push rod; 6. Arc-shaped splint; 7. Vertical plate; 8. Limit column; 9. Limit hole; 10. U-shaped plate; 11. Servo motor; 12. Second hydraulic push rod; 13. Connecting rod; 14. Fourth electric push rod; 15. U-shaped rod; 16. Third hydraulic push rod; 17. Heating coil; 18. Strip hole; 19. Slider; 20. Extrusion wheel. DETAILED DESCRIPTION

[0021] 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 the embodiments.

[0022] Example 1, with reference to Figure 1-4 A straightening device for cold-drawn tube production includes a base plate 1, a limiting column 8 is fixed on the upper end surface of the base plate 1, a limiting hole 9 is provided on the top of the limiting column 8, a heating coil 17 is installed on the upper end surface of the base plate 1 and on one side of the limiting column 8, the limiting hole 9 and the top of the heating coil 17 are at the same height, a bracket is installed on the upper end surface of the base plate 1 and on one side of the heating coil 17, an extrusion structure is installed on the bracket, and a correction mechanism is installed on the upper end surface of the base plate 1 and on the other side of the limiting column 8;

[0023] The bracket includes a U-shaped plate 10 fixed to the upper end of the base plate 1, and a first hydraulic push rod 5 is installed on the lower end surface of the horizontal section of the U-shaped plate 10;

[0024] The extrusion structure includes a first U-shaped seat 4 connected to the lower end of the first hydraulic push rod 5, a second U-shaped seat 3 is provided on the upper end surface of the base plate 1 and below the first U-shaped seat 4, and extrusion wheels 20 are rotatably installed on the inner sides of the first U-shaped seat 4 and the second U-shaped seat 3. Servo motors 11 are installed on the outer walls of the first U-shaped seat 4 and the second U-shaped seat 3, and the two servo motors 11 are respectively connected to the two extrusion wheels 20;

[0025] A connecting rod 13 is fixed to the bottom of the inner wall of the second U-shaped seat 3, and the middle part of the connecting rod 13 is connected to the second hydraulic push rod 12. A support rod 2 is fixed to the upper end surface of the bottom plate 1, and an arc-shaped support groove is provided at the top end of the second hydraulic push rod 12. The arc-shaped support groove can support the cold-drawn tube after straightening is completed.

[0026] The cold-drawn tube passes through the limiting hole 9 of the limiting column 8 and is heated by the heating coil 17, which can reduce the stress inside the cold-drawn tube. The two servo motors 11 are used to drive the two extrusion wheels 20 to rotate respectively, so that the two extrusion wheels 20 can drive the cold-drawn tube to move. The first hydraulic push rod 5 is used to push the first U-shaped seat 4 downward, and then the two extrusion wheels 20 squeeze the cold-drawn tube. At the same time, the extension and contraction of the second hydraulic push rod 12 can drive the second U-shaped seat 3 to move back and forth, and then the two extrusion wheels 20 are used to repeatedly extrude the cold-drawn tube to assist in straightening the cold-drawn tube.

[0027] Example 2: This example is optimized based on Example 1. Specifically:

[0028] The correction mechanism includes a third hydraulic push rod 16 fixed to the upper end surface of the base plate 1. The upper end of the third hydraulic push rod 16 is connected to a U-shaped rod 15. Fourth electric push rods 14 are fixed to the inner walls of the opposite sides of the U-shaped rod 15 respectively. The opposite ends of the two fourth electric push rods 14 are connected to the arc-shaped clamping plate 6.

[0029] Vertical plates 7 are fixed to the upper end surface of the base plate 1 and on both sides of the U-shaped rod 15. Strip holes 18 are opened on the two vertical plates 7. Sliders 19 are fixed to the outer walls of both sides of the U-shaped rod 15. The two sliders 19 are respectively slidably engaged with the two strip holes 18 to ensure the stability of the U-shaped rod 15.

[0030] The U-shaped rod 15 is lifted and lowered by utilizing the extension and retraction of the third hydraulic push rod 16, and the two arc-shaped clamping plates 6 are pushed toward each other by the two fourth electric push rods 14 respectively, so as to squeeze the parts of the cold-drawn tube that have not entered the limiting hole 9 and have a large degree of bending, reduce the degree of bending, and achieve pretreatment of the parts with a large degree of bending, which is beneficial to improving the straightening effect of the cold-drawn tube.

[0031] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A straightening device for cold drawn tube production, comprising a base plate (1), characterized in that: A limiting column (8) is fixed on the upper end surface of the base plate (1), a limiting hole (9) is provided on the top of the limiting column (8), a heating coil (17) is installed on the upper end surface of the base plate (1) and on one side of the limiting column (8), a bracket is installed on the upper end surface of the base plate (1) and on one side of the heating coil (17), an extrusion structure is installed on the bracket, and a correction mechanism is installed on the upper end surface of the base plate (1) and on the other side of the limiting column (8).

2. A straightening device for cold drawn tube production according to claim 1, characterized in that: The bracket comprises a U-shaped plate (10) fixed to the upper end of the base plate (1), and a first hydraulic push rod (5) is installed on the lower end surface of the horizontal section of the U-shaped plate (10).

3. The straightening equipment for cold drawn tube production according to claim 2, characterized in that: The extrusion structure comprises a first U-shaped seat (4) connected to the lower end of a first hydraulic push rod (5); a second U-shaped seat (3) is provided on the upper end surface of the base plate (1) and located below the first U-shaped seat (4); extrusion wheels (20) are rotatably mounted on the inner sides of the first U-shaped seat (4) and the second U-shaped seat (3); servo motors (11) are mounted on the outer walls of the first U-shaped seat (4) and the second U-shaped seat (3); and the two servo motors (11) are respectively connected to the two extrusion wheels (20).

4. The straightening equipment for cold drawn tube production according to claim 3, characterized in that: A connecting rod (13) is fixed to the bottom of the inner wall of the second U-shaped seat (3), the middle of the connecting rod (13) is connected to a second hydraulic push rod (12), and a support rod (2) is fixed to the upper end surface of the bottom plate (1).

5. The straightening equipment for cold drawn tube production according to claim 4, characterized in that: The top end of the second hydraulic push rod (12) is provided with an arc-shaped supporting groove.

6. The straightening equipment for cold drawn tube production according to claim 1, characterized in that: The correction mechanism comprises a third hydraulic push rod (16) fixed to the upper end surface of the base plate (1), the upper end of the third hydraulic push rod (16) is connected to a U-shaped rod (15), and fourth electric push rods (14) are respectively fixed to the inner walls on opposite sides of the U-shaped rod (15), and the opposite ends of the two fourth electric push rods (14) are both connected to an arc-shaped clamping plate (6).

7. The straightening equipment for cold drawn tube production according to claim 6, characterized in that: Vertical plates (7) are fixed on the upper end surface of the bottom plate (1) and on both sides of the U-shaped rod (15). Strip holes (18) are opened on the two vertical plates (7). Slide blocks (19) are fixed on the outer walls of both sides of the U-shaped rod (15). The two slide blocks (19) are respectively slidably engaged with the two strip holes (18).

8. The straightening equipment for cold drawn tube production according to claim 1, characterized in that: The limiting hole (9) and the top of the heating coil (17) are at the same height.

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