Guiding device for finish rolling seamless steel pipe

Abstract

The utility model provides a guide device for finish rolling of seamless steel pipes, which belongs to the field of steel pipe processing and comprises a fixed seat, two mounting plates are arranged on one side of the fixed seat, sliding grooves are arranged on opposite sides of the two mounting plates, conveying components are arranged on the inner walls of the two sliding grooves, and a finishing mill is arranged on the other side of the fixed seat. Two strip-shaped plates are arranged on the other side of the finishing mill, and auxiliary assemblies are arranged on the opposite sides of the two strip-shaped plates. The electric push rod drives the connecting rod to move in the through hole, the connecting rod drives the arc-shaped pressing block to move downwards to be matched with the arc-shaped cushion block to extrude and limit the seamless steel pipe, the arc-shaped pressing block is stressed to drive the connecting rod and the push block to extrude the spring in the mounting sleeve, and damage to the seamless steel pipe is avoided; the two first motors are matched with the first bearings and the threaded rods to drive the two sliding blocks to move, the two sliding blocks are matched with the two connecting blocks to drive the fixing sleeve to move, the fixing sleeve is matched with the first guide sleeve to drive the seamless steel pipe to move, and guide conveying is completed.

Description

Technical Field

[0001] The utility model relates to the field of steel pipe processing, in particular to a guiding device for precision rolling seamless steel pipes. Background Technique

[0002] For precision rolling of steel pipes, a mandrel is assembled in front of a long mandrel bar and matched with rolling rolls as rolling tooling. The billet to be rolled passes through the mandrel bar. The trolley clamps the billet and feeds it forward. When the trolley runs to the front limit, the trolley retreats, clamps the subsequent billet, and presses against the previous billet to continue rolling, realizing the production of the whole set of steel pipes. The rolling rolls assembled at the head move reciprocally to roll the billet into finished steel pipes of the specifications required by customers. Therefore, a guiding device is used in the processing of seamless steel pipes to ensure the stability of precision rolling. After retrieval, a guiding device for precision rolling large-diameter thin-walled steel pipes with the application number CN201821922744.9 discloses that it includes a mandrel, a billet, and a mandrel bar. A guiding component is arranged between the billet and the mandrel bar. The guiding component is composed of a steel pipe, a gasket, and a conical hollow cylinder. The gasket and the conical hollow cylinder are respectively welded to the left and right ends of the steel pipe. A mandrel is arranged on the left side of the gasket. A mandrel thread is arranged at one end of the mandrel close to the gasket. The inner hole diameter of the gasket is larger than the outer diameter of the mandrel thread and smaller than the outer diameter of the mandrel bar. The mandrel thread passes through the gasket and is connected to the mandrel bar to fix the guiding component. When the billet moves forward through the guiding component, due to the small gap between the billet and the guiding component, the contact surface formed is the entire cross-section of the billet, and the force is uniform, solving the quality defect of concave pits in the inner hole of the precision rolling finished product. However, the above description still has the following defects in actual use: This guiding device is not convenient for transporting seamless steel pipes during use. At the same time, there is a lack of a structure for auxiliary guiding of seamless steel pipes after precision rolling, and it is not convenient for blanking. Therefore, it is necessary to design a guiding device for precision rolling seamless steel pipes with strong practicability. Content of the Utility Model

[0003] The purpose of the utility model is to provide a guiding device for precision rolling seamless steel pipes to solve the problems raised in the above background technique.

[0004] To achieve the above purpose, the utility model provides the following technical solution: A guiding device for precision rolling seamless steel pipes includes a fixed seat. Two mounting plates are arranged on one side of the fixed seat. Sliding grooves are respectively opened on the opposite sides of the two mounting plates. A conveying component is arranged on the inner walls of the two sliding grooves. A precision rolling mill is arranged on the other side of the fixed seat. Two strip-shaped plates are arranged on the other side of the precision rolling mill. An auxiliary component is arranged on the opposite sides of the two strip-shaped plates;

[0005] The conveying component includes two first bearings installed on one side of the inner walls of two sliding grooves. The inner walls of the two first bearings are rotatably connected to one ends of two threaded rods. The other ends of the two threaded rods are fixedly connected to the output shafts of two first motors. Sliders are threadedly connected to the surfaces of the two threaded rods. One sides of the two sliders are fixedly connected to both sides of a fixed sleeve through connecting blocks. A through hole is formed in the top of the fixed sleeve. A limiting component is arranged on the inner wall of the through hole. First guide sleeves are arranged at both ends of the fixed sleeve;

[0006] The auxiliary component includes two second motors installed on one side of a strip-shaped plate. The output shafts of the two second motors are fixedly connected to one ends of two auxiliary rollers. The other ends of the two auxiliary rollers are rotatably connected to the surface of another strip-shaped plate through second bearings. Auxiliary grooves are formed on the surfaces of the auxiliary rollers.

[0007] As a preferred solution of the present utility model: The limiting component includes a connecting rod installed on the inner wall of the through hole. An arc-shaped pressing block is fixedly connected to the bottom of the connecting rod. A push block is arranged at the top of the connecting rod. The side of the push block is slidably connected to a cavity groove formed in the inner wall of an installation sleeve. The top of the push block is fixedly connected to a spring at the top of the inner wall of the installation sleeve. The top of the installation sleeve is fixedly connected to the telescopic end of an electric push rod through an installation block. The top of the electric push rod is fixedly connected to the middle of the bottom of a strip-shaped block. Both sides of the bottom of the strip-shaped block are fixedly connected to the tops of two connecting blocks through support rods.

[0008] As a preferred solution of the present utility model: Through grooves are formed on both sides of the fixed seat. An annular groove is formed on the inner wall of the through groove. The inner wall of the annular groove is rotatably connected to an installation ring on the side of a rotating disk. A rotating hole is formed on the surface of the rotating disk. A second guide sleeve is snap-fitted to the inner wall of the rotating hole.

[0009] As a preferred solution of the present utility model: An arc-shaped cushion block is arranged at the bottom of the inner wall of the fixed sleeve. A clamping groove is formed on the top of the inner wall of the fixed sleeve. The top of the arc-shaped pressing block is movably snap-fitted to the inner wall of the clamping groove.

[0010] As a preferred solution of the present utility model: Two clamping grooves are formed at the edges of the opposite sides of the two strip-shaped plates. One ends of two groups of supporting blocks are snap-fitted to the inner walls of the two groups of clamping grooves. One sides of the two groups of supporting blocks facing each other are fixedly connected to both sides of a supporting sleeve. The inner wall of the supporting sleeve is slidably connected to the bottom of a seamless steel pipe. Connecting holes are formed at the tops of the two groups of supporting blocks. The inner walls of the two groups of connecting holes are snap-fitted to hole grooves formed at the bottoms of the inner walls of the two groups of clamping grooves through connecting pins.

[0011] As a preferred solution of the present utility model: The first guide sleeve, the fixed sleeve, the second guide sleeve, the auxiliary roller and the supporting sleeve are on the same horizontal line.

[0012] As a preferred embodiment of the present utility model: a control panel is provided on the surface of the mounting plate, and the first motor, the second motor, and the electric push rod are all electrically connected to an external power supply through the control panel.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] (1) By passing the seamless steel pipe through the first guide sleeve, the fixed sleeve, and the second guide sleeve, the electric push rod cooperates with the mounting sleeve to drive the connecting rod to move in the through hole. The connecting rod drives the arc-shaped pressing block to move downward, and cooperates with the arc-shaped cushion block to squeeze and limit the seamless steel pipe. The arc-shaped pressing block drives the connecting rod to move under force, and the connecting rod cooperates with the push block to squeeze the spring in the mounting sleeve, thereby avoiding damage to the surface of the seamless steel pipe during the limiting process. The two first motors cooperate with the two first bearings to drive the two threaded rods to rotate, the two threaded rods drive the two sliders to move, the two sliders cooperate with the two connecting blocks to drive the fixed sleeve to move, and the fixed sleeve cooperates with the two first guide sleeves to drive the seamless steel pipe to move, so as to convey the seamless steel pipe while guiding.

[0015] (2) The two second motors cooperate with the two second bearings to drive the two auxiliary rollers to rotate. The two auxiliary rollers cooperate with the two auxiliary grooves to drive the seamless steel pipe to move, and cooperate with the support sleeves supported by the two groups of support blocks to assist in limiting the seamless steel pipe, thereby facilitating the guiding and blanking of the seamless steel pipe after precision rolling. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 is a partial structural diagram of the present utility model;

[0018] Figure 3 is one of the partial structural diagrams of the present utility model;

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

[0020] Figure 5 is a schematic structural diagram of the auxiliary component of the present utility model.

[0021] In the figure: 1. Fixed seat; 11. Mounting plate; 12. Chute; 13. Precision rolling mill; 14. Strip plate; 15. Through groove; 16. Annular groove; 17. Rotating disk; 18. Mounting ring; 19. Rotating hole; 110. Second guide sleeve; 111. Clamping groove; 112. Support block; 113. Support sleeve; 114. Control panel; 2. Conveying assembly; 21. First bearing; 22. Threaded rod; 23. First motor; 24. Slide block; 25. Connecting block; 26. Fixed sleeve; 27. Through hole; 28. First guide sleeve; 29. Connecting rod; 210. Arc-shaped pressing block; 211. Pushing block; 212. Mounting sleeve; 213. Spring; 214. Electric push rod; 215. Strip-shaped block; 216. Support rod; 217. Arc-shaped cushion block; 218. Card slot; 3. Auxiliary assembly; 31. Second motor; 32. Auxiliary roller; 33. Second bearing. Detailed implementation mode

[0022] To make the purpose, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0023] Please refer to Figures 1 - 5 , a guiding device for precision rolling seamless steel pipes, including a fixed seat 1. Two mounting plates 11 are arranged on one side of the fixed seat 1. Chutes 12 are opened on the opposite sides of the two mounting plates 11. A conveying assembly 2 is arranged on the inner walls of the two chutes 12. A precision rolling mill 13 is arranged on the other side of the fixed seat 1. Two strip plates 14 are arranged on the other side of the precision rolling mill 13. An auxiliary assembly 3 is arranged on the opposite sides of the two strip plates 14;

[0024] Please refer to Figure 4 , the conveying assembly 2 includes two first bearings 21 installed on one side of the inner walls of the two chutes 12. The inner walls of the two first bearings 21 are rotationally connected to one ends of the two threaded rods 22. The other ends of the two threaded rods 22 are fixedly connected to the output shafts of the two first motors 23. Slide blocks 24 are threadedly connected to the surfaces of the two threaded rods 22. The opposite sides of the two slide blocks 24 are fixedly connected to both sides of the fixed sleeve 26 through connecting blocks 25. A through hole 27 is opened at the top of the fixed sleeve 26. A limiting assembly is arranged on the inner wall of the through hole 27. First guide sleeves 28 are arranged at both ends of the fixed sleeve 26.

[0025] During specific use: Pass the seamless steel pipe through the first guide sleeve 28, the fixed sleeve 26, and the second guide sleeve 110. The electric push rod 214 cooperates with the installation sleeve 212 to drive the connecting rod 29 to move within the through hole 27. The connecting rod 29 drives the arc-shaped pressing block 210 to move downward, and cooperates with the arc-shaped cushion block 217 to extrude and limit the seamless steel pipe. The arc-shaped pressing block 210 drives the connecting rod 29 to move under force, and the connecting rod 29 cooperates with the push block 211 to extrude the spring 213 within the installation sleeve 212, thereby avoiding damage to the surface of the seamless steel pipe during the limiting process. The two first motors 23 cooperate with the two first bearings 21 to drive the two threaded rods 22 to rotate. The two threaded rods 22 drive the two sliders 24 to move. The two sliders 24 cooperate with the two connecting blocks 25 to drive the fixed sleeve 26 to move. The fixed sleeve 26 cooperates with the two first guide sleeves 28 to drive the seamless steel pipe to move, and convey the seamless steel pipe while guiding it.

[0026] Please refer to Figure 5 , the auxiliary component 3 includes two second motors 31 installed on one side of the strip-shaped plate 14. The output shafts of the two second motors 31 are fixedly connected to one ends of the two auxiliary rollers 32. The other ends of the two auxiliary rollers 32 are respectively rotatably connected to the surface of another strip-shaped plate 14 through the second bearings 33. The surface of the auxiliary roller 32 is provided with auxiliary grooves.

[0027] During specific use: The two second motors 31 cooperate with the two second bearings 33 to drive the two auxiliary rollers 32 to rotate. The two auxiliary rollers 32 cooperate with the two auxiliary grooves to drive the seamless steel pipe to move, and cooperate with the support sleeves 113 supported by the two groups of support blocks 112 to perform auxiliary limiting on the seamless steel pipe, facilitating the guiding and blanking of the seamless steel pipe after precision rolling.

[0028] Please refer to Figure 4 , the limiting component includes a connecting rod 29 installed on the inner wall of the through hole 27. The bottom of the connecting rod 29 is fixedly connected with an arc-shaped pressing block 210. The top of the connecting rod 29 is provided with a push block 211. The side of the push block 211 is slidably connected with a cavity groove opened on the inner wall of the installation sleeve 212. The top of the push block 211 is fixedly connected with a spring 213 on the top inner wall of the installation sleeve 212. The top of the installation sleeve 212 is fixedly connected with the telescopic end of the electric push rod 214 through a mounting block. The top of the electric push rod 214 is fixedly connected with the middle of the bottom of the strip-shaped block 215. Both sides of the bottom of the strip-shaped block 215 are fixedly connected with the tops of the two connecting blocks 25 through the support rods 216.

[0029] During specific use: Pass the seamless steel pipe through the first guide sleeve 28, the fixed sleeve 26, and the second guide sleeve 110. The electric push rod 214 cooperates with the installation sleeve 212 to drive the connecting rod 29 to move in the through hole 27. The connecting rod 29 drives the arc-shaped pressing block 210 to move downward, and cooperates with the arc-shaped cushion block 217 to squeeze and limit the seamless steel pipe. The arc-shaped pressing block 210 drives the connecting rod 29 to move under force, and the connecting rod 29 cooperates with the push block 211 to squeeze the spring 213 in the installation sleeve 212, thereby avoiding damage to the surface of the seamless steel pipe during the limiting process.

[0030] Please refer to Figure 3 , through grooves 15 are opened on both sides of the fixed seat 1, an annular groove 16 is opened on the inner wall of the through groove 15, the inner wall of the annular groove 16 is rotatably connected to the mounting ring 18 on the side of the rotating disc 17, a rotating hole 19 is opened on the surface of the rotating disc 17, and the inner wall of the rotating hole 19 is snap-fitted with the second guide sleeve 110.

[0031] During specific use: When performing precision rolling, the rotating disc 17 drives the mounting ring 18 to rotate on the inner wall of the annular groove 16, and cooperates with the second guide sleeve 110 to drive the seamless steel pipe to rotate, thereby completing the precision rolling operation.

[0032] Please refer to Figure 4 , an arc-shaped cushion block 217 is arranged at the bottom of the inner wall of the fixed sleeve 26, a clamping groove 218 is opened at the top of the inner wall of the fixed sleeve 26, and the top of the arc-shaped pressing block 210 is movably snap-fitted with the inner wall of the clamping groove 218.

[0033] During specific use: The top of the arc-shaped pressing block 210 is movably snap-fitted with the inner wall of the clamping groove 218, so as to facilitate moving downward and cooperate with the arc-shaped cushion block 217 to squeeze and limit the seamless steel pipe.

[0034] Please refer to Figure 2 , two clamping grooves 111 are opened at the edges of the opposite sides of the two strip plates 14, one ends of two groups of support blocks 112 are snap-fitted with the inner walls of the two groups of clamping grooves 111, the opposite sides of the two groups of support blocks 112 are fixedly connected to both sides of the support sleeve 113, the inner wall of the support sleeve 113 is slidably connected to the bottom of the seamless steel pipe, connecting holes are opened at the tops of the two groups of support blocks 112, and the inner walls of the two groups of connecting holes are respectively snap-fitted with holes opened at the bottoms of the inner walls of the two groups of clamping grooves 111 through connecting pins.

[0035] During specific use: Snap the two groups of support blocks 112 with the inner walls of the two groups of clamping grooves 111, and insert the two groups of connecting pins into the two groups of connecting holes and the holes, thereby installing and fixing the two groups of support blocks 112 and the two strip plates 14. The two groups of support blocks 112 cooperate with the inner wall of the support sleeve 113 to perform auxiliary limiting on the seamless steel pipe, so as to facilitate guiding and blanking of the seamless steel pipe.

[0036] Please refer to Figure 1, the first guide sleeve 28, the fixed sleeve 26, the second guide sleeve 110, the auxiliary roller 32 and the support sleeve 113 are on the same horizontal line.

[0037] During specific use: The first guide sleeve 28, the fixed sleeve 26, the second guide sleeve 110, the auxiliary roller 32 and the support sleeve 113 are on the same horizontal line, so as to facilitate the guiding and feeding of seamless steel pipes.

[0038] Please refer to Figure 1 , the surface of the mounting plate 11 is provided with a control panel 114, and the first motor 23, the second motor 31 and the electric push rod 214 are all electrically connected to an external power supply through the control panel 114.

[0039] During specific use: The control panel 114 is used to control the first motor 23, the second motor 31 and the electric push rod 214, so as to facilitate the device to guide and assist in feeding seamless steel pipes.

[0040] During use, pass the seamless steel pipe through the first guide sleeve 28, the fixed sleeve 26 and the second guide sleeve 110. The electric push rod 214 cooperates with the mounting sleeve 212 to drive the connecting rod 29 to move in the through hole 27. The connecting rod 29 drives the arc-shaped pressing block 210 to move downward, and cooperates with the arc-shaped cushion block 217 to squeeze and limit the seamless steel pipe. The arc-shaped pressing block 210 drives the connecting rod 29 to move under force. The connecting rod 29 cooperates with the push block 211 to squeeze the spring 213 in the mounting sleeve 212, avoiding damage to the surface of the seamless steel pipe during the limiting process. The two first motors 23 cooperate with the two first bearings 21 to drive the two threaded rods 22 to rotate. The two threaded rods 22 drive the two sliders 24 to move. The two sliders 24 cooperate with the two connecting blocks 25 to drive the fixed sleeve 26 to move. The fixed sleeve 26 cooperates with the two first guide sleeves 28 to drive the seamless steel pipe to move, conveying the seamless steel pipe while guiding. The two second motors 31 cooperate with the two second bearings 33 to drive the two auxiliary rollers 32 to rotate. The two auxiliary rollers 32 cooperate with the two auxiliary grooves to drive the seamless steel pipe to move, and cooperate with the support sleeve 113 supported by the two groups of support blocks 112 to assist in limiting the seamless steel pipe, facilitating the guiding and feeding of the seamless steel pipe after finishing the precision rolling.

[0041] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A guiding device for precision rolling seamless steel pipes, characterized in that, It includes a fixed seat (1). On one side of the fixed seat (1), there are two mounting plates (11). On the opposite sides of the two mounting plates (11), chutes (12) are respectively opened. On the inner walls of the two chutes (12), there is a conveying component (2). On the other side of the fixed seat (1), there is a finishing mill (13). On the other side of the finishing mill (13), there are two strip plates (14). On the opposite sides of the two strip plates (14), there is an auxiliary component (3). The conveying component (2) includes two first bearings (21) installed on one side of the inner walls of the two chutes (12). The inner walls of the two first bearings (21) are rotatably connected to one ends of two threaded rods (22). The other ends of the two threaded rods (22) are fixedly connected to the output shafts of two first motors (23). On the surfaces of the two threaded rods (22), there are sliders (24) threadedly connected. On the opposite sides of the two sliders (24), both sides of a fixed sleeve (26) are fixedly connected through connecting blocks (25). On the top of the fixed sleeve (26), there is a through hole (27). On the inner wall of the through hole (27), there is a limiting component. At both ends of the fixed sleeve (26), there are first guide sleeves (28). The auxiliary component (3) includes two second motors (31) installed on one side of the strip plates (14). The output shafts of the two second motors (31) are fixedly connected to one ends of two auxiliary rollers (32). The other ends of the two auxiliary rollers (32) are respectively rotatably connected to the surfaces of the other strip plates (14) through second bearings (33). On the surface of the auxiliary roller (32), there is an auxiliary groove.

2. The guiding device for precision rolling seamless steel pipes according to claim 1, wherein: The limiting component includes a connecting rod (29) installed on the inner wall of the through hole (27). At the bottom of the connecting rod (29), there is an arc-shaped pressing block (210) fixedly connected. At the top of the connecting rod (29), there is a pushing block (211). The side of the pushing block (211) is slidably connected to a cavity groove opened on the inner wall of an installation sleeve (212). The top of the pushing block (211) is fixedly connected to a spring (213) on the top inner wall of the installation sleeve (212). The top of the installation sleeve (212) is fixedly connected to the telescopic end of an electric push rod (214) through a mounting block. The top of the electric push rod (214) is fixedly connected to the middle of the bottom of a strip block (215). On both sides of the bottom of the strip block (215), they are fixedly connected to the tops of the two connecting blocks (25) through support rods (216).

3. The guiding device for precision rolling seamless steel pipes according to claim 1, wherein: On both sides of the fixed seat (1), there are through slots (15) opened. On the inner walls of the through slots (15), there are annular grooves (16). The inner walls of the annular grooves (16) are rotatably connected to mounting rings (18) on the side edges of a rotating disk (17). On the surface of the rotating disk (17), there is a rotating hole (19). The inner wall of the rotating hole (19) is snap-fitted with a second guide sleeve (110).

4. A guiding device for precision rolling seamless steel pipes according to claim 1, characterized in that: An arc-shaped cushion block (217) is provided at the bottom of the inner wall of the fixed sleeve (26), and a clamping groove (218) is formed at the top of the inner wall of the fixed sleeve (26). The inner wall of the clamping groove (218) is movably clamped with the top of the arc-shaped pressing block (210).

5. The guiding device for precision rolling seamless steel pipes according to claim 1, characterized in that: Two clamping grooves (111) are formed at the edges of the opposite sides of the two strip-shaped plates (14). One ends of two groups of support blocks (112) are clamped and connected to the inner walls of the two groups of clamping grooves (111). The opposite sides of the two groups of support blocks (112) are fixedly connected to both sides of the support sleeve (113). The inner wall of the support sleeve (113) is slidably connected to the bottom of the seamless steel pipe. Connecting holes are formed at the tops of the two groups of support blocks (112), and the inner walls of the two groups of connecting holes are respectively clamped and connected to holes formed at the bottoms of the inner walls of the two groups of clamping grooves (111) through connecting pins.

6. The guiding device for precision rolling seamless steel pipes according to claim 1, characterized in that: The first guide sleeve (28), the fixed sleeve (26), the second guide sleeve (110), the auxiliary roller (32) and the support sleeve (113) are on the same horizontal line.

7. The guiding device for precision rolling seamless steel pipes according to claim 1, characterized in that: A control panel (114) is provided on the surface of the mounting plate (11). The first motor (23), the second motor (31) and the electric push rod (214) are all electrically connected to an external power supply through the control panel (114).

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