High-precision steel pipe reducing mill

Abstract

The utility model discloses a high-precision steel pipe reducing mill, which relates to the technical field of steel pipe reducing and comprises a base, supporting legs are fixedly connected to four corners of the bottom end of the base, a mounting seat is fixedly connected to the right of the top end of the base, and a pushing mechanism is fixedly connected to the left end of the base. The top end of the pushing mechanism is fixedly connected with a fixing mechanism, the top of the mounting base is fixedly connected with a diameter reducing mechanism, the pushing mechanism comprises a first motor and a connecting plate, and the right end of the first motor is fixedly connected with the left end of the base. According to the high-precision steel pipe reducing mill, the outer wall of the left portion of a steel pipe body is placed between the two clamping blocks, then the two-way threaded rod is rotated, the second sliding block moves on the outer wall of the two-way threaded rod, the second sliding block drives the clamping blocks to move synchronously, the steel pipe body is clamped by the clamping blocks, and therefore the steel pipe body is fixed; and subsequent rotation of the steel pipe body is facilitated, and the fixing effect is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of steel pipe reducing, in particular to a high-precision steel pipe reducing machine. Background Technique

[0002] A steel pipe has a hollow cross-section and its length is much greater than the diameter or circumference of the steel. It is divided into round, square, rectangular and special-shaped steel pipes according to the cross-sectional shape. It is divided into carbon structural steel pipes, low-alloy structural steel pipes, alloy steel pipes and composite steel pipes according to the material. It is divided into steel pipes for conveying pipelines, engineering structures, thermal equipment, petrochemical industries, mechanical manufacturing, geological drilling, high-pressure equipment, etc. During the processing of steel pipes, it is necessary to reduce the diameter of one end of the steel pipe to facilitate its butt joint or other operations.

[0003] For example, Chinese patent document CN210614651U discloses a high-precision seamless steel pipe four-roll reducing machine, which includes a base, a groove, a slide bar, a slide seat, an electric push rod, a support plate, a motor, a chuck, a reducing mechanism, a fixed seat, a shaping hole, a rib plate and an electric control cabinet. The setting of the motor, the reducing mechanism and the shaping hole in the utility model, the motor rotates to drive the steel pipe to rotate. During the reducing process, by rotating the steel pipe, the wall thickness of the reduced steel pipe is effectively guaranteed to be uniform. An inner circle is formed by 4 reducing wheels, so that the pipe wall contacts with the reducing wheels, reducing the force on the steel pipe in other directions, effectively reducing the internal stress of the pipe wall. The steel pipe passes through the shaping hole to restrict the steel pipe, effectively improving the roundness of the steel pipe.

[0004] The following problems exist in the prior art:

[0005] When the prior art reduces the diameter of a steel pipe, the fixing effect on the steel pipe is poor. As a result, during the subsequent reducing process, when the steel pipe is rotated, the steel pipe may not be able to rotate effectively, reducing the practicability of the device. At the same time, when the prior art reduces the diameter of a steel pipe, when reducing the diameter of steel pipes with different diameters, the roundness of the steel pipe cannot be guaranteed, reducing the practicability of the device. Content of the Utility Model

[0006] The utility model provides a high-precision steel pipe reducing machine to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A high-precision steel pipe reducing machine, comprising a base, four corners of the bottom end of the base are fixedly connected with supporting legs, the right part of the top end of the base is fixedly connected with a mounting seat, the left end of the base is fixedly connected with a pushing mechanism, the top end of the pushing mechanism is fixedly connected with a fixing mechanism, the top of the mounting seat is fixedly connected with a reducing mechanism. The pushing mechanism includes a motor 1 and a connecting plate. The right end of the motor 1 is fixedly connected with the left end of the base. The bottom end of the connecting plate is slidably connected with the top end of the base. The fixing mechanism includes a mounting plate, and the bottom end of the mounting plate is fixedly connected with the top end of the connecting plate. The reducing mechanism includes a fixing frame, and the bottom of the fixing frame is fixedly connected with the top of the mounting seat.

[0009] Preferably: the output end of the motor 1 is fixedly connected with a threaded rod, the right end of the threaded rod is rotatably connected with the right end of the inner cavity of the base, the outer wall of the threaded rod is threadedly connected with a slider 1, the outer wall of the slider 1 is slidably connected with the inner cavity of the base, the top end of the slider 1 is fixedly connected with the bottom end of the connecting plate, and the front and rear parts of the bottom end of the connecting plate are fixedly connected with a guide block 1, and the outer wall of the guide block 1 is slidably connected with the inner wall of the base.

[0010] Preferably: the left end of the mounting plate is fixedly connected with a motor 2, the output end of the motor 2 is fixedly connected with a rotating rod, the outer wall of the rotating rod is rotatably connected with the inner wall of the mounting plate, the right end of the rotating rod is fixedly connected with a turntable, and four guide blocks 2 are fixedly connected in a circular array at the left end of the turntable, and the outer wall of the guide block 2 is slidably connected with the inner wall of the mounting plate.

[0011] Preferably: a bidirectional threaded rod is rotatably connected to the inner wall of the turntable, the upper and lower parts of the outer wall of the bidirectional threaded rod are threadedly connected with sliders 2, the right end of the slider 2 is fixedly connected with a clamping block, and the outer wall of the clamping block is lapped with a steel pipe main body.

[0012] Preferably: the top of the fixing frame is fixedly connected with a motor 3, the output end of the motor 3 is fixedly connected with a worm, the outer wall of the worm is engaged with a worm gear, the left and right ends of the worm gear are fixedly connected with limiting rings, the outer wall of the limiting ring is slidably connected with the inner wall of the fixing frame, and arc-shaped blocks are fixedly connected in a circular array on the inner wall of the worm gear, and the shape of the arc-shaped block is circular arc.

[0013] Preferably: a pulley is lapped on the inner wall of the worm gear, the outer wall of the pulley is rotatably connected with a fixing plate, the outer wall of the fixing plate is slidably connected with the inner wall of the fixing frame, three mounting brackets are fixedly connected in a linear array on the outer wall of the fixing plate, the left and right parts of one end of the mounting bracket are rotatably connected with vertical rods, the outer wall of the vertical rod is lapped with the outer wall of the steel pipe main body, and a horizontal roller is rotatably connected to the middle of the mounting bracket.

[0014] Due to the adoption of the above technical solution, the technical progress achieved by the present utility model compared with the prior art is as follows:

[0015] 1. The present utility model provides a high-precision steel pipe reducing machine. By placing the outer wall of the left part of the steel pipe body between two clamping blocks, and then rotating the bidirectional threaded rod, the second slider moves on the outer wall of the bidirectional threaded rod. The second slider drives the clamping blocks to move synchronously, so that the clamping blocks clamp the steel pipe body, thereby fixing the steel pipe body, facilitating the subsequent rotation of the steel pipe body, and achieving a fixing effect.

[0016] 2. The present utility model provides a high-precision steel pipe reducing machine. By starting the second motor to drive the rotating rod to rotate, the rotating rod drives the turntable to rotate synchronously. The turntable drives the second guiding block to rotate inside the mounting plate. The second guiding block limits and guides the turntable, making the turntable rotate more stably. At the same time, it drives the steel pipe body to rotate, so that the outer wall of the steel pipe body contacts the clamping blocks. At the same time, the steel pipe body continuously moves to the right. After reducing the diameter, the outer wall of the steel pipe body contacts the outer wall of the cross roller. The cross roller performs secondary roundness correction on the steel pipe body, so that the part of the steel pipe body where the diameter is reduced remains relatively circular, avoiding serious deformation after diameter reduction, and achieving the effect of keeping the steel pipe body circular. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the front view of the present utility model;

[0018] Figure 2 is a schematic cross-sectional structural diagram of the front view of the present utility model;

[0019] Figure 3 is a schematic structural diagram of the fixing mechanism of the present utility model;

[0020] Figure 4 is a schematic structural diagram of the reducing mechanism of the present utility model;

[0021] Figure 5 is the present utility model Figure 4 The enlarged structural diagram at position A in.

[0022] In the figure: 1. Base; 11. Support leg; 12. Mounting seat; 2. Pushing mechanism; 21. First motor; 22. Threaded rod; 23. First slider; 24. Connecting plate; 25. First guiding block; 3. Fixing mechanism; 31. Mounting plate; 32. Second motor; 33. Rotating rod; 34. Turntable; 35. Second guiding block; 36. Bidirectional threaded rod; 37. Second slider; 38. Clamping block; 4. Reducing mechanism; 41. Fixed frame; 42. Third motor; 43. Worm; 44. Worm gear; 45. Limiting ring; 451. Arc-shaped block; 46. Pulley; 47. Fixed plate; 471. Mounting frame; 48. Vertical rod; 49. Cross roller; 5. Steel pipe body. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] In order to make the technical means, creative features, achieved purposes and effects realized by the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] As Figures 1-4 shown, a high-precision steel pipe reducing machine includes a base 1. Support legs 11 are fixedly connected to the four corners of the bottom end of the base 1. A mounting seat 12 is fixedly connected to the right part of the top end of the base 1. A pushing mechanism 2 is fixedly connected to the left end of the base 1. A fixing mechanism 3 is fixedly connected to the top end of the pushing mechanism 2. A reducing mechanism 4 is fixedly connected to the top of the mounting seat 12. The pushing mechanism 2 includes a motor 21 and a connecting plate 24. The right end of the motor 21 is fixedly connected to the left end of the base 1. The bottom end of the connecting plate 24 is slidably connected to the top end of the base 1. The fixing mechanism 3 includes a mounting plate 31. The bottom end of the mounting plate 31 is fixedly connected to the top end of the connecting plate 24. The reducing mechanism 4 includes a fixing frame 41. The bottom of the fixing frame 41 is fixedly connected to the top of the mounting seat 12.

[0025] The steel pipe main body 5 is fixed by the fixing mechanism 3, and then the pushing mechanism 2 pushes the fixing mechanism 3 to drive the steel pipe main body 5 to move synchronously, so that the steel pipe main body 5 is inserted into the reducing mechanism 4, and the reducing mechanism 4 reduces the diameter of the steel pipe main body 5.

[0026] As Figure 2 shown, the output end of the motor 21 is fixedly connected to a threaded rod 22. The right end of the threaded rod 22 is rotatably connected to the right end of the inner cavity of the base 1. A slider 23 is threadedly connected to the outer wall of the threaded rod 22. The outer wall of the slider 23 is slidably connected to the inner cavity of the base 1. The top end of the slider 23 is fixedly connected to the bottom end of the connecting plate 24. The front and rear parts of the bottom end of the connecting plate 24 are fixedly connected with guide blocks 25. The outer walls of the guide blocks 25 are slidably connected to the inner walls of the base 1.

[0027] By starting the motor 21, the threaded rod 22 is driven to rotate, so that the slider 23 moves on the outer wall of the threaded rod 22. The slider 23 drives the connecting plate 24 to move synchronously. The connecting plate 24 drives the guide block 25 to slide on the inner wall of the base 1. The guide block 25 guides the connecting plate 24 to make the movement of the connecting plate 24 more stable. At the same time, the connecting plate 24 drives the mounting plate 31 to move synchronously, and the mounting plate 31 drives the steel pipe main body 5 to move synchronously, achieving a pushing effect.

[0028] As Figure 2 、 Figure 3As shown in the figure, the left end of the mounting plate 31 is fixedly connected to the second motor 32. The output end of the second motor 32 is fixedly connected to a rotating rod 33. The outer wall of the rotating rod 33 is rotatably connected to the inner wall of the mounting plate 31. The right end of the rotating rod 33 is fixedly connected to a turntable 34. Four second guiding blocks 35 are fixedly connected to the left end of the turntable 34 in a circular array. The outer wall of the second guiding block 35 is slidably connected to the inner wall of the mounting plate 31.

[0029] By starting the second motor 32 to drive the rotating rod 33 to rotate, the rotating rod 33 drives the turntable 34 to rotate synchronously. The turntable 34 drives the second guiding block 35 to rotate on the inner wall of the mounting plate 31. The second guiding block 35 limits and guides the turntable 34, making the turntable 34 rotate more stably. At the same time, it drives the steel pipe body 5 to rotate, achieving the effect of rotation.

[0030] As Figure 2 、 Figure 3 shown in the figure, a bidirectional threaded rod 36 is rotatably connected to the inner wall of the turntable 34. The upper and lower parts of the outer wall of the bidirectional threaded rod 36 are both threadedly connected to second sliders 37. The right end of the second slider 37 is fixedly connected to a clamping block 38. The outer wall of the clamping block 38 abuts against the steel pipe body 5.

[0031] By rotating the bidirectional threaded rod 36, the second slider 37 moves on the outer wall of the bidirectional threaded rod 36. The second slider 37 drives the clamping block 38 to move synchronously, so that the clamping block 38 clamps the steel pipe body 5, thereby fixing the steel pipe body 5, facilitating the subsequent rotation of the steel pipe body 5, and achieving the effect of fixation.

[0032] As Figure 2 、 Figure 4 shown in the figure, the top of the fixed frame 41 is fixedly connected to the output end of the third motor 42, which is fixedly connected to a worm 43. A worm gear 44 is engaged with the outer wall of the worm 43. Limit rings 45 are fixedly connected to the left and right ends of the worm gear 44. The outer wall of the limit ring 45 is slidably connected to the inner wall of the fixed frame 41. Arc-shaped blocks 451 are fixedly connected to the inner wall of the worm gear 44 in a circular array. The outer shape of the arc-shaped block 451 is circular arc. A pulley 46 abuts against the inner wall of the worm gear 44. The outer wall of the pulley 46 is rotatably connected to a fixing plate 47. The outer wall of the fixing plate 47 is slidably connected to the inner wall of the fixed frame 41. Three mounting brackets 471 are fixedly connected to the outer wall of the fixing plate 47 in a linear array. Vertical rods 48 are rotatably connected to the left and right parts at one end of the mounting bracket 471. The outer wall of the vertical rod 48 abuts against the outer wall of the steel pipe body 5. A horizontal roller 49 is rotatably connected to the middle of the mounting bracket 471.

[0033] By starting the motor three 42, the worm 43 is driven to rotate, so that the outer wall of the worm 43 meshes with the worm wheel 44. The worm wheel 44 drives the limit ring 45 to rotate on the inner wall of the fixed frame 41. The limit ring 45 limits and supports the worm wheel 44, making the rotation of the limit ring 45 more stable. At the same time, the limit ring 45 drives the arc-shaped block 451 to rotate synchronously, so that the outer wall of the arc-shaped block 451 contacts the outer wall of the pulley 46, causing the pulley 46 to drive the fixed plate 47 to move synchronously. The fixed plate 47 drives the mounting bracket 471 to slide on the inner wall of the fixed frame 41. The mounting bracket 471 drives the vertical rod 48 and the horizontal roller 49 to move synchronously, thereby clamping the steel pipe main body 5 and reducing the diameter of the steel pipe main body 5, achieving the effect of reducing the diameter.

[0034] Working principle of the utility model: During use, place the outer wall of the left part of the steel pipe main body 5 between the two clamping blocks 38, and then rotate the bidirectional threaded rod 36 to make the second slider 37 move on the outer wall of the bidirectional threaded rod 36. The second slider 37 drives the clamping blocks 38 to move synchronously, so that the clamping blocks 38 clamp the steel pipe main body 5, thereby fixing the steel pipe main body 5, facilitating the subsequent rotation of the steel pipe main body 5, and achieving a fixing effect. Then, start the first motor 21 to drive the threaded rod 22 to rotate, so that the first slider 23 moves on the outer wall of the threaded rod 22. The first slider 23 drives the connecting plate 24 to move synchronously. The connecting plate 24 drives the first guide block 25 to slide inside the base 1. The first guide block 25 guides the connecting plate 24 to make the connecting plate 24 move more smoothly. At the same time, the connecting plate 24 drives the mounting plate 31 to move synchronously. The mounting plate 31 drives the steel pipe main body 5 to move synchronously, so that the outer wall of the right part of the steel pipe main body 5 is inserted into the hollow position in the middle of the fixed frame 41, and the outer wall of the steel pipe main body 5 contacts the outer wall of the left vertical rod 48. Then, start the third motor 42 to drive the worm 43 to rotate, so that the outer wall of the worm 43 meshes with the worm gear 44. The worm gear 44 drives the limiting ring 45 to rotate inside the fixed frame 41. The limiting ring 45 limits and supports the worm gear 44 to make the limiting ring 45 rotate more smoothly. At the same time, the limiting ring 45 drives the arc-shaped block 451 to rotate synchronously, so that the outer wall of the arc-shaped block 451 contacts the outer wall of the pulley 46. The pulley 46 drives the fixing plate 47 to move synchronously. The fixing plate 47 drives the mounting bracket 471 to slide inside the fixed frame 41. The mounting bracket 471 drives the vertical rod 48 and the cross roller 49 to move synchronously, thereby clamping the steel pipe main body 5 to reduce the diameter of the steel pipe main body 5. At the same time, start the second motor 32 to drive the rotating rod 33 to rotate, so that the rotating rod 33 drives the turntable 34 to rotate synchronously. The turntable 34 drives the second guide block 35 to rotate inside the mounting plate 31. The second guide block 35 limits and guides the turntable 34 to make the turntable 34 rotate more stably. At the same time, it drives the steel pipe main body 5 to rotate, so that the outer wall of the steel pipe main body 5 contacts the clamping blocks 38. At the same time, the steel pipe main body 5 continuously moves to the right. The outer wall of the steel pipe main body 5 after diameter reduction contacts the outer wall of the cross roller 49. The cross roller 49 performs secondary rounding on the steel pipe main body 5 to keep the reduced diameter part of the steel pipe main body 5 relatively circular, avoiding serious deformation after diameter reduction, and achieving the effect of keeping the steel pipe main body 5 circular. Thus, the use experience is greatly improved.

[0035] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection claimed by the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-precision steel pipe reducing mill, comprising a base (1), characterized in that: Four corners of the bottom end of the base (1) are fixedly connected with supporting legs (11). The right part of the top end of the base (1) is fixedly connected with a mounting seat (12). The left end of the base (1) is fixedly connected with a pushing mechanism (2). The top end of the pushing mechanism (2) is fixedly connected with a fixing mechanism (3). The top of the mounting seat (12) is fixedly connected with a diameter reducing mechanism (4). The pushing mechanism (2) includes a first motor (21) and a connecting plate (24). The right end of the first motor (21) is fixedly connected with the left end of the base (1). The bottom end of the connecting plate (24) is slidably connected with the top end of the base (1). The fixing mechanism (3) includes a mounting plate (31). The bottom end of the mounting plate (31) is fixedly connected with the top end of the connecting plate (24). The diameter reducing mechanism (4) includes a fixing frame (41). The bottom of the fixing frame (41) is fixedly connected with the top of the mounting seat (12).

2. The high-precision steel pipe reducing mill according to claim 1, characterized in that: The output end of the first motor (21) is fixedly connected with a threaded rod (22). The right end of the threaded rod (22) is rotatably connected with the right end of the inner cavity of the base (1). The outer wall of the threaded rod (22) is threadedly connected with a first slider (23). The outer wall of the first slider (23) is slidably connected with the inner cavity of the base (1). The top end of the first slider (23) is fixedly connected with the bottom end of the connecting plate (24). The front and rear parts of the bottom end of the connecting plate (24) are both fixedly connected with a first guiding block (25). The outer wall of the first guiding block (25) is slidably connected with the inner wall of the base (1).

3. The high-precision steel pipe reducing mill according to claim 1, wherein: The left end of the mounting plate (31) is fixedly connected with a second motor (32). The output end of the second motor (32) is fixedly connected with a rotating rod (33). The outer wall of the rotating rod (33) is rotatably connected with the inner wall of the mounting plate (31). The right end of the rotating rod (33) is fixedly connected with a turntable (34). Four guiding blocks (35) are fixedly connected to the left end of the turntable (34) in a circular array. The outer walls of the guiding blocks (35) are slidably connected with the inner wall of the mounting plate (31).

4. A high-precision steel pipe reducing machine according to claim 3, characterized in that: A bidirectional threaded rod (36) is rotatably connected to the inner wall of the turntable (34). The upper and lower parts of the outer wall of the bidirectional threaded rod (36) are both threadedly connected with second sliders (37). The right end of the second slider (37) is fixedly connected with a clamping block (38). The outer wall of the clamping block (38) is lapped with a steel pipe body (5).

5. A high-precision steel pipe reducing machine according to claim 1, characterized in that: The output end of a third motor (42) fixedly connected to the top of the fixing frame (41) is fixedly connected with a worm (43). A worm gear (44) is engaged with the outer wall of the worm (43). Limit rings (45) are fixedly connected to the left and right ends of the worm gear (44). The outer walls of the limit rings (45) are slidably connected with the inner wall of the fixing frame (41). Arc-shaped blocks (451) are fixedly connected to the inner wall of the worm gear (44) in a circular array. The shape of the arc-shaped blocks (451) is arc-shaped.

6. The high-precision steel pipe reducing mill according to claim 5, characterized in that: The inner wall of the worm gear (44) is lapped with a pulley (46). The outer wall of the pulley (46) is rotatably connected to a fixing plate (47). The outer wall of the fixing plate (47) is slidably connected to the inner wall of the fixing frame (41). Three mounting brackets (471) are fixedly connected to the outer wall of the fixing plate (47) in a linear array. The left and right parts of one end of the mounting bracket (471) are rotatably connected to vertical rods (48). The outer wall of the vertical rod (48) is lapped with the outer wall of the steel pipe body (5). A horizontal roller (49) is rotatably connected to the middle of the mounting bracket (471).

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