Reducing bulging device suitable for cold drawing of large-diameter steel member

Abstract

The utility model relates to the technical field of cold drawing of steel members, in particular to a diameter-reducing bulging device suitable for cold drawing of large-diameter steel members, which comprises four supporting legs and a mechanical plate, a blanking plate and a feeding plate are mounted among the four supporting legs, and the blanking plate and the feeding plate are obliquely arranged in a staggered manner. A height adjusting mechanism is installed at the position, close to the discharging plate and the feeding plate, of the mechanical plate, an upper pressing piece is installed on the height adjusting mechanism, two fixing plates are installed at the positions, close to the discharging plate and the feeding plate, of the mechanical plate, rotating rods are rotationally installed on the inner sides of the two fixing plates, and lower pressing pieces are fixedly installed at the inner ends of the two rotating rods; synchronous motors are installed on the outer sides of the two fixing plates, and the two synchronous motors and the two rotating rods are fixedly installed. The large-diameter steel pipe cold-drawing and diameter-reducing bulging device can adapt to fixed extrusion of large-diameter pipes of different sizes, achieves the purpose of automatic feeding and discharging through matched use of the feeding plate and the discharging plate, and facilitates cold-drawing, diameter-reducing and bulging of the large-diameter steel pipes.

Description

Technical Field

[0001] The utility model relates to the technical field of cold drawing of steel components, in particular to a diameter reducing and expanding device suitable for cold drawing of large-diameter steel components. Background Art

[0002] Cold-drawn steel is a processing technology for steel, which refers to various cold-drawn steels produced by cold drawing. The characteristics of cold-drawn steel are: high precision and good surface quality. Diameter reduction bulging is a metal processing technology. By mechanically processing the metal tube, the inner wall is plastically deformed in the process of gradually reducing the diameter, so that the outer diameter of the tube becomes smaller and the inner diameter becomes larger, so as to achieve the purpose of reducing the outer diameter and increasing the inner diameter. The principle of diameter reduction bulging is to use the pressure and tensile force on the inner wall of the metal tube during the mechanical processing to cause plastic deformation, so that the outer diameter of the tube becomes smaller and the inner diameter becomes larger. Specifically, the process of diameter reduction bulging is to clamp the metal tube between two molds, and through mechanical processing, the metal tube is gradually reduced under the extrusion of the mold. At the same time, the pressure and tensile force on the inner wall cause it to produce plastic deformation, and finally form the inner diameter and outer diameter that meet the requirements. The principle of diameter reduction bulging is based on the plastic deformation of the metal tube. By gradually reducing the diameter of the tube, the pressure and tensile force on the inner wall are increased, so that the inner diameter of the tube becomes larger and the outer diameter becomes smaller. This processing technology is often used to produce some special shapes of tubes, such as tapered tubes, parabolic tubes, etc. The working principle of reducing and bulging is to gradually reduce the metal tube through mechanical processing, so that its inner wall produces plastic deformation, thereby achieving the purpose of reducing the outer diameter and increasing the inner diameter.

[0003] Traditional cold drawing mainly produces round steel and hexagonal steel with a diameter of less than 50mm, and steel pipes with a diameter of less than 76mm. It is not convenient to perform cold drawing and diameter reduction expansion on large-diameter steel pipes. Due to the large diameter of large-diameter steel pipes, it is inconvenient to take and put the material, and it is not convenient to fix steel pipes of different diameters. Utility Model Content

[0004] The main purpose of the utility model is to provide a diameter reducing and bulging device suitable for cold drawing of large-diameter steel components, so as to solve the problem of adding a diameter reducing and bulging device suitable for cold drawing of large-diameter steel components proposed in the relevant technology.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a reducing and expanding device suitable for cold drawing of large-diameter steel components is provided, including four supporting legs and a mechanical plate, a blanking plate and a loading plate are installed between the four supporting legs, the blanking plate and the loading plate are staggered and inclined, a height adjustment mechanism is installed on the mechanical plate near the blanking plate and the loading plate, an upper pressure piece is installed on the height mechanism, two fixed plates are installed on the mechanical plate near the blanking plate and the loading plate, rotating rods are rotatably installed on the inner sides of the two fixed plates, lower pressure pieces are fixedly installed on the inner ends of the two rotating rods, synchronous motors are installed on the outer sides of the two fixed plates, the two synchronous motors are fixedly installed with the two rotating rods, the lower pressure piece is horizontally located between the blanking plate and the loading plate, and a cold drawing traction mechanism is arranged on the front side of the mechanical plate.

[0006] Furthermore, the lower material plate is inclined in the direction away from the lower pressure piece, and the upper material plate is inclined in the direction close to the lower pressure piece. The extension length of the lower material plate is greater than the extension length of the upper material plate, and the lower material plate is located at the oblique lower side of the lower pressure piece, which facilitates loading and unloading of the lower pressure piece.

[0007] Furthermore, a first groove is opened at the top of the blanking plate, a first blocking bar is slidably installed in the first groove, two first push rods are installed at the bottom of the blanking plate, and the output shafts of the two first push rods are fixedly installed on the bottom of the first blocking bar; the large diameter tube guides the position of the blanking plate, and the first blocking bar on the blanking plate can block and limit the large diameter tube.

[0008] Furthermore, a second groove is provided on the top of the loading plate, and a second blocking bar is slidably installed in the second groove. Two second push rods are fixedly installed on the bottom of the loading plate, and the output shafts of the two second push rods are fixedly installed on the bottom of the second blocking bar; the two second push rods drive the second blocking bar to move downward, and under the inclined force, a large diameter tube slides to the inner side of the lower pressure piece, and then the second blocking bar resets to continue blocking the large diameter tube.

[0009] Furthermore, the height adjustment mechanism includes a transverse plate, and two telescopic motors are installed on the top of the transverse plate. The output shafts of the two telescopic motors are fixedly installed on the top of the upper pressure piece; the two telescopic motors push the upper pressure piece to move downward, and the large diameter tube is pressed and fixed by the upper pressure piece and the lower pressure piece, which can adapt to the fixing and extrusion of large diameter tubes of different sizes.

[0010] Furthermore, the upper pressing piece and the lower pressing piece are symmetrically arranged, both of which are polygonal structures, and rubber plates are arranged on the inner sides of the upper pressing piece and the lower pressing piece; the two rubber plates are tough and can increase friction to allow the steel wire rope to pass through the large diameter pipe.

[0011] Furthermore, the cold-drawn traction mechanism includes a vertical plate, a winding mechanism is installed on the inner side of the vertical plate, a steel wire rope is connected to the winding mechanism, and a conical internal extruded cold-drawn part is connected to the steel wire rope; the conical internal extruded cold-drawn part is fixed to the steel wire rope by bolts and can be replaced, and the diameter of the conical internal extruded cold-drawn part is slightly larger than the inner diameter of the large diameter tube.

[0012] Furthermore, the winding mechanism includes a fixed shell, a winding motor and a winding wheel, the fixed shell is installed on the straight plate, the winding motor and the winding wheel are both located in the fixed shell, and the winding wheel is installed with the winding motor output shaft, and the wire rope is wound around the outside of the winding wheel.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. Place the large diameter tube on the top of the loading plate and block it with the second blocking bar. The two second push rods drive the second blocking bar to move downward. Under the tilting force, a large diameter tube slides to the inside of the lower pressure piece, and then the second blocking bar resets to continue to block the large diameter tube. The two telescopic motors push the upper pressure piece downward, and the large diameter tube is pressed and fixed by the upper and lower pressure pieces. It can adapt to the fixation of large diameter tubes of different sizes. The two rubber plates are tough and can increase friction.

[0015] 2. Pass the steel wire rope through the large diameter tube, and then connect the steel wire rope with the tapered internal extrusion cold-drawn part. The winding mechanism winds up the steel wire rope, and the tapered internal extrusion cold-drawn part is pulled into the large diameter tube and penetrates. Through mechanical processing, the large diameter tube is gradually reduced under extrusion. At the same time, the pressure and tensile force on the inner wall cause it to produce plastic deformation, so as to achieve the purpose of diameter reduction and bulging. After completing the processing of a large diameter tube, the upper pressing part is reset, and the two synchronous motors drive the lower pressing part to flip through the two rotating rods, so as to guide the large diameter tube to the position of the blanking plate. The first blocking bar on the blanking plate can block and limit the large diameter tube, and then the lower pressing part is reset and can continue to be used, so as to achieve the purpose of automatic loading and unloading.

[0016] The utility model can adapt to the fixed extrusion of large-diameter pipes of different sizes, and realizes the purpose of automatic loading and unloading through the coordinated use of a loading plate and a unloading plate, so as to facilitate the cold drawing, diameter reduction and expansion of large-diameter steel pipes. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main structure diagram of this design;

[0018] Figure 2 Schematic diagram of the installation structure of the loading plate and unloading plate designed for this purpose;

[0019] Figure 3 Design for this Figure 2 Schematic diagram of the structure viewed from above;

[0020] Figure 4 Design for this Figure 2 A schematic diagram of the front view structure of

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the lower pressure piece in this design.

[0022] Illustrations: 1. Support legs; 2. Unloading plate; 21. First groove; 22. First blocking bar; 23. First push rod; 3. Loading plate; 31. Second groove; 32. Second blocking bar; 33. Second push rod; 4. Mechanical plate; 5. Horizontal plate; 6. Telescopic motor; 7. Upper pressure piece; 8. Fixed plate; 9. Rotating rod; 10. Lower pressure piece; 11. Synchronous motor; 12. Straight plate; 13. Winding mechanism; 14. Wire rope; 15. Conical inner extrusion cold-drawn part; 16. Rubber plate. DETAILED DESCRIPTION

[0023] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0024] See also Figures 1 to 5 Figure, this embodiment provides a diameter reducing and expanding device suitable for cold drawing of large-diameter steel components, including four supporting legs 1 and a mechanical plate 4, a blanking plate 2 and an upper plate 3 are installed between the four supporting legs 1, the blanking plate 2 and the upper plate 3 are staggered and inclined, a height adjustment mechanism is installed at the position of the mechanical plate 4 near the blanking plate 2 and the upper plate 3, an upper pressure piece 7 is installed on the height mechanism, two fixed plates 8 are installed at the position of the mechanical plate 4 near the blanking plate 2 and the upper plate 3, a rotating rod 9 is rotatably installed on the inner side of the two fixed plates 8, a lower pressure piece 10 is fixedly installed on the inner end of the two rotating rods 9, a synchronous motor 11 is installed on the outer side of the two fixed plates 8, the two synchronous motors 11 are fixedly installed with the two rotating rods 9, the lower pressure piece 10 is horizontally located between the blanking plate 2 and the upper plate 3, and a cold drawing traction mechanism is arranged on the front side of the mechanical plate 4.

[0025] In this embodiment, the lower material plate 2 is inclined in the direction away from the lower pressure piece 10, and the upper material plate 3 is inclined in the direction close to the lower pressure piece 10. The extension length of the lower material plate 2 is greater than the extension length of the upper material plate 3. The lower material plate 2 is located at the oblique lower side of the lower pressure piece 10, which facilitates loading and unloading of the lower pressure piece 10.

[0026] In this embodiment, a first groove 21 is opened at the top of the blanking plate 2, and a first blocking bar 22 is slidably installed in the first groove 21. Two first push rods 23 are installed at the bottom of the blanking plate 2, and the output shafts of the two first push rods 23 are fixedly installed on the bottom of the first blocking bar 22; the large diameter tube guides the position of the blanking plate 2, and the first blocking bar 22 on the blanking plate 2 can block and limit the large diameter tube.

[0027] In this embodiment, a second groove 31 is opened at the top of the loading plate 3, and a second blocking bar 32 is slidably installed in the second groove 31. Two second push rods 33 are fixedly installed at the bottom of the loading plate 3, and the output shafts of the two second push rods 33 are fixedly installed on the bottom of the second blocking bar 32; the two second push rods 33 drive the second blocking bar 32 to move downward, and under the inclined force, a large diameter tube slides to the inner side of the lower pressure piece 10, and then the second blocking bar 32 is reset to continue to block the large diameter tube.

[0028] In this embodiment, the height adjustment mechanism includes a transverse plate 5, and two telescopic motors 6 are installed on the top of the transverse plate 5. The output shafts of the two telescopic motors 6 are fixedly installed on the top of the upper pressure piece 7; the two telescopic motors 6 push the upper pressure piece 7 to move downward, and the large diameter tube is pressed and fixed by the upper pressure piece 7 and the lower pressure piece 10, which can adapt to the fixing and extrusion of large diameter tubes of different sizes.

[0029] In this embodiment, the upper pressing piece 7 and the lower pressing piece 10 are symmetrically arranged, and both the upper pressing piece 7 and the lower pressing piece 10 are polygonal structures. Rubber plates 16 are arranged on the inner sides of the upper pressing piece 7 and the lower pressing piece 10; the two rubber plates 16 are tough and can increase the friction force to pass the steel wire rope 14 through the large diameter pipe.

[0030] In this embodiment, the cold-drawn traction mechanism includes a vertical plate 12, and a winding mechanism 13 is installed on the inner side of the vertical plate 12. A steel wire rope 14 is connected to the winding mechanism 13, and a conical internal extruded cold-drawn part 15 is connected to the steel wire rope 14; the conical internal extruded cold-drawn part 15 is fixed to the steel wire rope 14 by bolts and can be replaced. The diameter of the conical internal extruded cold-drawn part 15 is slightly larger than the inner diameter of the large diameter tube. The winding mechanism 13 includes a fixed shell, a winding motor and a winding wheel. The fixed shell is installed on the straight plate 12, and the winding motor and the winding wheel are both located in the fixed shell, and the winding wheel is installed with the output shaft of the winding motor, and the steel wire rope 14 is wound around the outside of the winding wheel.

[0031] Working method: When in use, place the large diameter tube on the top of the loading plate 3, block it with the second blocking bar 32, turn on the power and control switch, the two second push rods 33 drive the second blocking bar 32 to move downward, under the tilting force, a large diameter tube slides to the inside of the lower pressing piece 10, and then the second blocking bar 32 resets to continue to block the large diameter tube, the two telescopic motors 6 push the upper pressing piece 7 to move downward, and the large diameter tube is pressed and fixed by the upper pressing piece 7 and the lower pressing piece 10, which can adapt to the fixation of large diameter tubes of different sizes, the two rubber plates 16 are tough and can increase the friction, the steel wire rope 14 is passed through the large diameter tube, and then the steel wire rope 14 is connected to the tapered inner extrusion cold-drawn piece 15, the tapered inner extrusion cold-drawn piece 15 It is fixed with bolts and wire rope 14 and can be replaced. The diameter of the tapered internal extrusion cold-drawn part 15 is slightly larger than the inner diameter of the large diameter tube. The winding mechanism 13 winds up the wire rope 14, and the tapered internal extrusion cold-drawn part 15 is pulled into the large diameter tube and penetrates through it. The large diameter tube is gradually reduced under extrusion through mechanical processing. At the same time, the pressure and tensile force on the inner wall cause it to produce plastic deformation, thereby achieving the purpose of diameter reduction and bulging. After completing the processing of a large diameter tube, the upper pressing part 7 is reset, and the two synchronous motors 11 drive the lower pressing part 10 to flip through the two rotating rods 9, so that the large diameter tube can be guided to the position of the blanking plate 2. The first blocking bar 22 on the blanking plate 2 can block and limit the large diameter tube, and then the lower pressing part 10 is reset and can continue to be used.

[0032] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A diameter reducing and bulging device suitable for cold drawing of large diameter steel components, comprising four supporting legs (1) and a mechanical plate (4), wherein a lowering plate (2) and an upper plate (3) are installed between the four supporting legs (1), characterized in that: The blanking plate (2) and the loading plate (3) are arranged in a staggered and inclined manner. A height adjustment mechanism is installed at a position of the mechanical plate (4) close to the blanking plate (2) and the loading plate (3). An upper pressing piece (7) is installed on the height mechanism. Two fixed plates (8) are installed at a position of the mechanical plate (4) close to the blanking plate (2) and the loading plate (3). Rotating rods (9) are rotatably installed on the inner sides of the two fixed plates (8). Lower pressing pieces (10) are fixedly installed at the inner ends of the two rotating rods (9). Synchronous motors (11) are installed on the outer sides of the two fixed plates (8). The two synchronous motors (11) are fixedly installed on the two rotating rods (9). The lower pressing piece (10) is horizontally located between the blanking plate (2) and the loading plate (3). A cold drawing traction mechanism is arranged on the front side of the mechanical plate (4).

2. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1 is characterized in that: The lower material plate (2) is inclined in a direction away from the lower pressing member (10), and the upper material plate (3) is inclined in a direction close to the lower pressing member (10). The extension length of the lower material plate (2) is greater than the extension length of the upper material plate (3), and the lower material plate (2) is located at an oblique lower side of the lower pressing member (10).

3. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1 is characterized in that: The top of the blanking plate (2) is provided with a first groove (21), a first blocking bar (22) is slidably mounted in the first groove (21), and two first push rods (23) are mounted at the bottom of the blanking plate (2), and the output shafts of the two first push rods (23) are fixedly mounted to the bottom of the first blocking bar (22).

4. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1 is characterized in that: The top of the loading plate (3) is provided with a second groove (31), a second blocking bar (32) is slidably mounted in the second groove (31), and two second push rods (33) are fixedly mounted on the bottom of the loading plate (3), and the output shafts of the two second push rods (33) are fixedly mounted on the bottom of the second blocking bar (32).

5. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1 is characterized in that: The height adjustment mechanism comprises a transverse plate (5), two telescopic motors (6) are mounted on the top of the transverse plate (5), and the output shafts of the two telescopic motors (6) are fixedly mounted on the top of the upper pressing member (7).

6. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1, characterized in that: The upper pressing piece (7) and the lower pressing piece (10) are symmetrically arranged; both the upper pressing piece (7) and the lower pressing piece (10) are polygonal structures; and rubber plates (16) are arranged on the inner sides of both the upper pressing piece (7) and the lower pressing piece (10).

7. The diameter reducing and bulging device for cold drawing of large diameter steel members according to claim 1, characterized in that: The cold-drawn traction mechanism comprises a vertical plate (12), a winding mechanism (13) is installed on the inner side of the vertical plate (12), a steel wire rope (14) is connected to the winding mechanism (13), and a conical inner extruded cold-drawn part (15) is connected to the steel wire rope (14).

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