Positioning device for cold rolling of steel pipe

Abstract

The utility model discloses a positioning device for cold rolling of steel pipes, which relates to the technical field of metal processing and comprises a mounting box, supporting plates are arranged on two sides of the top end of the mounting box, two supporting rods are rotatably arranged between the two supporting plates, a plurality of connecting pipes are rotatably arranged on the surfaces of the supporting rods, and upper connecting arms are arranged at the top ends of the connecting pipes. A first limiting wheel is rotationally arranged at the top of the upper connecting arm through a connecting shaft, and a lower connecting arm is arranged at the bottom end of the connecting pipe. The device has the advantages that a worker can adjust the height of the trapezoid block according to the diameter of a steel pipe, the trapezoid block pushes the lower connecting arm to move through the second limiting wheel in the upward moving process, the connecting arm and the upper connecting arm are made to rotate with the connecting pipe as the center, the opening and closing degree of the upper connecting arm can be controlled, and the working efficiency is improved. The steel pipe supporting device is convenient to operate, more accurate in positioning, more stable in supporting and capable of adapting to the sizes of steel pipes of different types and diameters.

Description

Technical Field

[0001] The utility model relates to a positioning device, in particular to a positioning device for cold rolling of steel pipes, belonging to the technical field of metal processing. Background Technique

[0002] During the cold rolling process of steel pipes, the positioning accuracy of the steel pipes directly affects the rolling quality and production efficiency. Traditional steel pipe positioning devices mostly use mechanical clamping or fixed stoppers, but there are problems such as inaccurate positioning, easy damage to the surface of the steel pipes, and inconvenient adjustment. Therefore, a positioning device for cold rolling of steel pipes is needed;

[0003] Among them, the "steel pipe positioning mechanism for the rolling center of a cold rolling tube mill" disclosed in the patent application number "CN202322459643.X" is also an increasingly mature technology, including a chassis, a support seat, an inflation pipe, a telescopic airbag, a positioning plate, and an adjustment component. The chassis is arranged on one side of the rolling center of the cold rolling tube mill. A plurality of support seats are provided, and all the plurality of support seats are arranged at the top of the chassis. Placement grooves matching the tube blanks are opened on all the plurality of support seats, which is convenient for stably placing the tube blanks. The inflation pipe is slidably arranged inside the tube blank. A plurality of telescopic airbags are provided, and all the plurality of telescopic airbags are communicated with the inflation pipe. The positioning plate is arranged on one side of the inflation pipe, and two clamping frames are symmetrically connected to the positioning plate. Abrasive pads are fixedly connected to one side of both clamping frames close to the side wall of the tube blank. The adjustment component is installed on one side of the positioning plate and is used to push and rotate the tube blank. Through the above technical solution, the problem of poor stability during the positioning of the tube blank in the prior art is solved;

[0004] However, the above method still has the following defects in actual use: because the wall diameters of different models are different, the position of the clamping frame needs to be adjusted before positioning, and the operation is relatively inconvenient. At the same time, the height of the support seat cannot be adjusted, and the bottom of steel pipes with different diameters cannot be effectively supported. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a positioning device for cold rolling of steel pipes to solve the problems in the above background technique that because the wall diameters of different models are different, the position of the clamping frame needs to be adjusted before positioning, the operation is relatively inconvenient, and at the same time, the support seat cannot effectively support the bottom of steel pipes with different diameters.

[0006] To achieve the above object, the present utility model provides the following technical solution: A positioning device for cold rolling of steel pipes, comprising an installation box. On both sides of the top of the installation box, there are support plates. Between the two support plates, two support rods are rotatably arranged. On the surface of the support rods, a number of connecting pipes are rotatably arranged. At the top of the connecting pipe, there is an upper connecting arm. At the top of the upper connecting arm, a first limiting wheel is rotatably arranged through a connecting shaft. At the bottom of the connecting pipe, there is a lower connecting arm. At the bottom end of the lower connecting arm, a second limiting wheel is rotatably connected. At the bottom end of the inner wall of the installation box, a number of first electric cylinders are arranged. At the telescopic end of the first electric cylinder, there is a trapezoidal block. At the top of the trapezoidal block, there is a positioning column. At the top of the positioning column, a third limiting wheel is rotatably arranged. At the bottom of the installation box, there is a sliding component, and inside the installation box, there is a reset component.

[0007] As a preferred technical solution of the present utility model, the surface of the trapezoidal block is rotationally matched with the surface of the second limiting wheel.

[0008] As a preferred technical solution of the present utility model, on both sides of the bottom end of the inner wall of the installation box, there are fixed frames. On both sides of the top of the fixed frame, there are fixed rods. At the top of the fixed rod, there is a support block. The surface of the support block is fixedly connected with the surface of the support rod.

[0009] As a preferred technical solution of the present utility model, the sliding component includes an installation platform, an installation seat, and a second electric cylinder. The installation platform is slidably arranged at the bottom of the installation box. On one side of the top of the installation platform, there is an installation seat. In the middle of the installation seat, there is a second electric cylinder. The telescopic end of the second electric cylinder is fixedly connected with one end of the installation box.

[0010] As a preferred technical solution of the present utility model, in the middle of the bottom end of the installation box, there is a slider. In the middle of the surface of the installation platform, there is a chute that matches the slider. The inner wall of the chute is slidably matched with the surface of the slider.

[0011] As a preferred technical solution of the present utility model, the reset component includes a number of first connection seats. The number of first connection seats is arranged on both sides of the inner wall of the installation box. Inside the first connection seat, a first round rod is rotatably arranged. On the surface of the lower connecting arm, there is a second connection seat. Inside the second connection seat, a second round rod is rotatably arranged. Between the first round rod and the corresponding second round rod, there is a reset spring.

[0012] As a preferred technical solution of the present utility model, in the middle of the top of the installation box, there is a limiting plate. In the middle of the limiting plate, there is a limiting groove.

[0013] As a preferred technical solution of the present utility model, installation holes are provided at the four corners of the installation platform.

[0014] Compared with the related technologies, a positioning device for cold rolling of steel pipes provided by the present utility model has the following beneficial effects:

[0015] Workers can adjust the height of the trapezoidal block according to the diameter of the steel pipe. During the upward movement of the trapezoidal block, the lower connecting arm is pushed by the second limiting wheel to move, so that the connecting arm and the upper connecting arm rotate around the connecting pipe as the center, the opening and closing size of the upper connecting arm can be controlled, the first limiting wheel and the third limiting wheel are closely attached to the steel pipe, the operation is convenient, the positioning is more accurate, the support is more stable, and the steel pipe sizes of different models and diameters can be adapted. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of the present utility model;

[0017] Figure 2 is a schematic top view structural diagram of the present utility model;

[0018] Figure 3 is a schematic cross-sectional structural diagram of the installation box of the present utility model;

[0019] Figure 4 is a schematic structural diagram of the trapezoidal block of the present utility model;

[0020] Figure 5 is an enlarged schematic structural diagram of the reset assembly of the present utility model.

[0021] In the figure: 1. Installation box; 101. Limiting plate; 102. Limiting groove; 111. Installation hole; 2. Support plate; 3. Support rod; 31. Connecting pipe; 32. Upper connecting arm; 33. First limiting wheel; 34. Lower connecting arm; 35. Second limiting wheel; 36. First electric cylinder; 37. Trapezoidal block; 38. Positioning column; 39. Third limiting wheel; 6. Sliding assembly; 61. Installation table; 62. Installation seat; 63. Second electric cylinder; 64. Chute; 65. Slide block; 71. Fixed frame; 72. Fixed rod; 73. Support block; 9. Reset assembly; 91. First connection seat; 92. First round rod; 93. Second connection seat; 94. Second round rod; 95. Reset spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-5, the present utility model provides a positioning device for cold rolling of steel pipes, including an installation box 1. Both sides of the top of the installation box 1 are fixedly provided with support plates 2. Two support rods 3 are rotatably arranged between the two support plates 2. A number of connecting pipes 31 are rotatably arranged on the surface of the support rod 3. The top of the connecting pipe 31 is fixedly provided with an upper connecting arm 32. A first limiting wheel 33 is rotatably arranged at the top of the upper connecting arm 32 through a connecting shaft. The left and right adjacent first limiting wheels 33 limit the two sides of the steel pipe respectively. The bottom of the connecting pipe 31 is fixedly provided with a lower connecting arm 34. The bottom of the lower connecting arm 34 is rotatably connected with a second limiting wheel 35. The second limiting wheel 35 supports and limits the bottom of the steel pipe. A number of first electric cylinders 36 are fixedly arranged at the bottom of the inner wall of the installation box 1. The telescopic end of the first electric cylinder 36 is fixedly provided with a trapezoidal block 37. The top of the trapezoidal block 37 is fixedly provided with a positioning column 38. A third limiting wheel 39 is rotatably arranged at the top of the positioning column 38. The third limiting wheel 39 supports the bottom of the steel pipe. A sliding component 6 is arranged at the bottom of the installation box 1. A reset component 9 is arranged inside the installation box 1. By adjusting the height of the trapezoidal block 37, the opening and closing size of the upper connecting arm 32 can be controlled.

[0024] The surface of the trapezoidal block 37 is rotationally matched with the surface of the second limiting wheel 35. The surface of the trapezoidal block 37 is of an inclined plane structure.

[0025] Both sides of the bottom of the inner wall of the installation box 1 are fixedly provided with fixing frames 71. Both sides of the top of the fixing frame 71 are fixedly provided with fixing rods 72. The top of the fixing rod 72 is fixedly provided with a support block 73. The surface of the support block 73 is fixedly connected with the surface of the support rod 3. The fixing frame 71 supports the support rod 3 through the cooperation of the fixing rod 72 and the support block 73, improving the support stability of the support rod 3.

[0026] The sliding component 6 includes an installation platform 61, an installation seat 62 and a second electric cylinder 63. The installation platform 61 is slidably arranged at the bottom of the installation box 1. One side of the top of the installation platform 61 is fixedly provided with the installation seat 62. The middle of the installation seat 62 is fixedly provided with the second electric cylinder 63. The telescopic end of the second electric cylinder 63 is fixedly connected with one end of the installation box 1.

[0027] A slider 65 is fixedly arranged in the middle of the bottom of the installation box 1. A sliding groove 64 matching the slider 65 is opened in the middle of the surface of the installation platform 61. The inner wall of the sliding groove 64 is slidably matched with the surface of the slider 65.

[0028] The reset component 9 includes a number of first connection seats 91. The number of first connection seats 91 is arranged on both sides of the inner wall of the installation box 1. A first round rod 92 is rotatably arranged inside the first connection seat 91. A second connection seat 93 is fixedly arranged on the surface of the lower connecting arm 34. A second round rod 94 is rotatably arranged inside the second connection seat 93. A reset spring 95 is arranged between the first round rod 92 and the corresponding second round rod 94. The positions of the upper connecting arm 32 and the lower connecting arm 34 are reset under the action of the pulling force of the reset spring 95.

[0029] A limiting plate 101 is fixedly arranged in the middle of the top end of the installation box 1. A limiting groove 102 is opened in the middle of the limiting plate 101. The inner wall of the limiting groove 102 is slidably matched with the surface of the positioning column 38.

[0030] Mounting holes 111 are opened at the four corners of the mounting table 61 for mounting.

[0031] During use, first, the positioning device for cold rolling of steel pipes is arranged on one side of the cold rolling mill through the cooperation of the mounting holes 111 at the four corners of the mounting table 61 and external bolts and nuts. The steel pipe to be processed is placed between the first limiting wheel 33 and the third limiting wheel 39 according to the direction of the installation box 1. After the placement is completed, the first electric cylinder 36 is started. The telescopic end of the first electric cylinder 36 drives the trapezoidal block 37 to move upward. The trapezoidal block 37 drives the third limiting wheel 39 at the top to move synchronously. Under the action of a number of third limiting wheels 39, the steel pipe is pushed upward, so that a number of third limiting wheels 39 are in close contact with the bottom end of the steel pipe, and the support is more stable. Since the surface of the trapezoidal block 37 is rotatably matched with the surface of the second limiting wheel 35, during the upward movement of the trapezoidal block 37, the lower connecting arm 34 is pushed to move through the second limiting wheel 35, so that the lower connecting arm 34 and the upper connecting arm 32 rotate around the connecting pipe 31 as the center. By adjusting the height of the trapezoidal block 37, the opening and closing size of the upper connecting arm 32 can be controlled. The close contact between the first limiting wheel 33, the third limiting wheel 39 and the steel pipe accurately positions the steel pipe;

[0032] The telescopic end of the second electric cylinder 63 pushes the installation box 1 forward to facilitate changing the positions of the steel pipe and the installation box 1. The inner wall of the chute 64 is slidably matched with the surface of the slider 65 to provide guidance for the movement of the installation box 1;

[0033] When the positioning operation is not carried out, the first electric cylinder 36 is used to control the positioning column 38 and the third limiting wheel 39 to move downward. The lower connecting arm 34 restores the upper connecting arm 32 to its original position under the action of the pulling force of the reset spring 95, which is convenient for the next use.

[0034] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning device for cold-rolled steel pipes, comprising a mounting box (1), characterized in that: Support plates (2) are provided on both sides of the top of the installation box (1), two support rods (3) are rotatably provided between the two support plates (2), a plurality of connecting tubes (31) are rotatably provided on the surface of the supporting rods (3), an upper connecting arm (32) is provided at the top of the connecting tube (31), a limiting wheel (33) is rotatably provided at the top of the upper connecting arm (32) through a connecting shaft, a lower connecting arm (34) is provided at the bottom of the connecting tube (31), and a limiting wheel (35) is rotatably connected at the bottom end of the lower connecting arm (34), a plurality of first electric cylinders (36) are provided at the bottom end of the inner wall of the installation box (1), a trapezoidal block (37) is provided at the telescopic end of the first electric cylinder (36), a positioning column (38) is provided at the top of the trapezoidal block (37), and a limiting wheel (39) is rotatably provided at the top of the positioning column (38), a sliding component (6) at the bottom of the installation box (1), and a reset component (9) is provided inside the installation box (1).

2. A positioning device for cold-rolled steel pipe according to claim 1, characterized in that: The surface of the trapezoidal block (37) is rotationally matched with the surface of the second limiting wheel (35).

3. A positioning device for cold-rolled steel pipe according to claim 1, characterized in that: A fixing frame (71) is provided on both sides of the bottom end of the inner wall of the installation box (1), a fixing rod (72) is provided on both sides of the top end of the fixing frame (71), a supporting block (73) is provided at the top end of the fixing rod (72), and the surface of the supporting block (73) is fixedly connected to the surface of the supporting rod (3).

4. A positioning device for cold-rolled steel pipe according to claim 1, characterized in that: The sliding assembly (6) comprises a mounting platform (61), a mounting seat (62) and a second electric cylinder (63); the mounting platform (61) is slidably arranged at the bottom end of the mounting box (1); a mounting seat (62) is arranged on one side of the top end of the mounting platform (61); a second electric cylinder (63) is arranged in the middle of the mounting seat (62); and a telescopic end of the second electric cylinder (63) is fixedly connected to one end of the mounting box (1).

5. A positioning device for cold-rolled steel pipe according to claim 4, characterized in that: A slider (65) is provided in the middle of the bottom end of the installation box (1), and a slide groove (64) matching the slider (65) is provided in the middle of the surface of the installation platform (61), and the inner wall of the slide groove (64) is slidably matched with the surface of the slider (65).

6. A positioning device for cold-rolled steel pipe according to claim 1, characterized in that: The reset assembly (9) comprises a plurality of first connection seats (91), wherein the plurality of first connection seats (91) are arranged on both sides of the inner wall of the installation box (1), a first round rod (92) is rotatably provided inside the first connection seat (91), a second connection seat (93) is provided on the surface of the lower connection arm (34), a second round rod (94) is rotatably provided inside the second connection seat (93), and a reset spring (95) is provided between the first round rod (92) and the corresponding second round rod (94).

7. A positioning device for cold-rolled steel pipe according to claim 1, characterized in that: A limiting plate (101) is provided in the middle of the top of the installation box (1), and a limiting groove (102) is provided in the middle of the limiting plate (101).

8. A positioning device for cold-rolled steel pipe according to claim 4, characterized in that: The four corners of the mounting platform (61) are each provided with mounting holes (111).

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