Positioning device of polishing machine in steel pipe

Abstract

The utility model relates to the technical field of pipeline polishing, in particular to a steel pipe inner polishing machine positioning device which comprises a rack, the rack comprises a machine tool and a support fixedly connected to the machine tool, a driving mechanism is arranged at the upper end of the machine tool, and a pipeline is arranged between a top plate of the support and the driving mechanism. A grinding mechanism is movably connected into the pipeline in a sleeved mode, the grinding mechanism comprises a mounting head and a fastening telescopic rod fixedly connected to the machine tool, a plurality of adjusting lead screws are rotationally connected into the mounting head, and the outer pipe walls of the adjusting lead screws are all in threaded connection with guide blocks. According to the pipeline grinding device, the fastening telescopic rod, the guide seat, the connecting rod, the mounting head, the adjusting lead screw, the guide block, the grinding disc, the adjusting shaft, the first bevel gear, the second bevel gear and the inner hexagonal groove structure are arranged to be matched with one another, so that multiple pipelines with different inner diameters can be conveniently matched for grinding operation.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline polishing, in particular to a positioning device for a steel pipe internal polishing machine. Background Art

[0002] Stainless steel pipe is a hollow, long, round steel bar, primarily used for industrial pipelines in the petroleum, chemical, medical, food, and light industries, as well as for mechanical structural components. However, during the production process, various factors can cause small iron particles and other objects to appear inside the pipe, which can affect the quality of the stainless steel pipe. Therefore, stainless steel pipes are often polished after production.

[0003] When applying for this utility model, the applicant searched and found that a Chinese patent disclosed "a positioning device for a steel pipe internal polishing machine, which includes a base plate, a steel pipe fixing mechanism fixedly installed on the base plate, the steel pipe fixing mechanism including two round rollers installed on the base plate for supporting the steel pipe, the upper end of the steel pipe is pressed against a pressing mechanism for pressing the steel pipe between the two round rollers, the pressing mechanism including two rollers, both of which are pressed against the steel pipe, the two rollers are symmetrical about the axis of the steel pipe, a slide rail for sliding guide is provided under the base plate, and a driving mechanism for making it slide back and forth on the slide rail is provided on the base plate." Its application number is "CN202022037078.4". When the patent is working, the steel pipe is fixed between the round rollers and the rollers. Driven by the driving mechanism, the base plate slides back and forth on the slide rail. A polishing machine for polishing the inner wall of the steel pipe is fixed in the sliding direction of the base plate, and the polishing machine includes a polishing roller, which is slidably connected to the inner wall of the steel pipe. The polishing roller slidably connected to the inner wall of the steel pipe repeatedly polishes the inner wall of the steel pipe.

[0004] The applicant found that although the above positioning device can work efficiently, its structure for polishing steel pipes is relatively simple and cannot be used for pipe walls with different inner diameters. The applicability of the device is general. Based on this, we propose an improved positioning device for steel pipe internal polishing machine. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings in the prior art and to propose a positioning device for a steel pipe internal polishing machine.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solution: a positioning device for a steel pipe internal polishing machine, comprising a frame, the frame comprising a machine tool and a bracket fixedly connected to the machine tool, a driving mechanism being provided at the upper end of the machine tool, a pipe being provided between the top plate of the bracket and the driving mechanism, a polishing mechanism being movably sleeved in the pipe;

[0007] The grinding mechanism includes a mounting head and a fastening telescopic rod fixedly connected to the machine tool, an adjusting screw is rotatably connected in the mounting head, and the number of the adjusting screws is multiple, the outer tube walls of the multiple adjusting screws are threadedly connected with guide blocks, the other ends of the multiple guide blocks pass through the mounting head and are fixedly connected to the grinding disc, the mounting head is rotatably connected, the outer wall of the adjusting shaft is fixedly sleeved with bevel gear 2, one end of the multiple adjusting screws is fixedly sleeved with bevel gear 1, and the multiple bevel gears 1 are meshed with bevel gear 2.

[0008] As a further description of the above technical solution:

[0009] An electric cylinder is fixedly connected to the top plate of the bracket, and the output end of the electric cylinder is fixedly connected to a mounting bracket. A pressure wheel is rotatably connected to the mounting bracket, and a plurality of pressure wheels are provided. Guide rods are fixedly connected to both sides of the upper end surface of the mounting bracket, and the upper ends of the two guide rods are both set through the top plate of the bracket.

[0010] As a further description of the above technical solution:

[0011] The driving mechanism includes a sliding rod and a bidirectional screw rod, a driving slider is threadedly connected to the outer wall of the bidirectional screw rod, a limiting slider is slidably connected to the outer wall of the sliding rod, a connecting shaft is rotatably connected between the driving slider and the limiting slider, and a roller is sleeved on the outer wall of the connecting shaft, and there are multiple rollers, and the pipeline is rotatably set on multiple rollers.

[0012] As a further description of the above technical solution:

[0013] The number of the driving slider, the limiting slider and the connecting shaft is two, and the two driving sliders are symmetrically arranged about the center of the bidirectional screw rod, and the two limiting sliders are symmetrically arranged about the center of the slide rod.

[0014] As a further description of the above technical solution:

[0015] The upper end of the driving slider is fixedly connected to a driving motor, the output end of the driving motor is fixedly connected to a driving gear, the outer wall of the connecting shaft is fixedly sleeved with a driven gear, and the driving gear is meshed with the driven gear.

[0016] As a further description of the above technical solution:

[0017] A servo motor is fixedly arranged on the outer wall of the bracket, the output end of the servo motor is fixedly connected to one end of the bidirectional screw rod, and one end of the adjustment shaft passes through the mounting head and is provided with an inner hexagonal groove.

[0018] As a further description of the above technical solution:

[0019] The upper end of the fastening telescopic rod is fixedly connected to a guide seat, a connecting rod is slidably sleeved in the guide seat, and the mounting head is fixedly connected to the outer wall of one end of the connecting rod.

[0020] The utility model has the following beneficial effects:

[0021] 1. Compared with the prior art, the positioning device of the internal polishing machine for steel pipes is provided with a fastening telescopic rod, a guide seat, a connecting rod, a mounting head, an adjusting screw, a guide block, a grinding disc, an adjusting shaft, a bevel gear 1, a bevel gear 2 and an inner hexagonal groove structure that cooperate with each other. When the device grinds pipes of different inner diameters through the grinding disc, after engaging the inner hexagonal groove with a hexagonal wrench, the adjusting shaft is rotated, thereby driving the bevel gear 2 to rotate, and then driving the bevel gear 1 to rotate, thereby driving multiple adjusting screws to rotate, thereby controlling the movement of the guide block, and then driving the grinding disc to move, which is convenient for matching pipes of different inner diameters for grinding operations and has better applicability.

[0022] 2. Compared with the existing technology, this positioning device of the steel pipe internal polishing machine sets a driving mechanism and uses the bidirectional screw on the driving mechanism to drive the two driving sliders to move relative to each other, thereby adjusting the distance between the two connecting shafts, thereby facilitating the adjustment of the distance between the two adjacent rollers, thereby facilitating the placement of pipes of different diameters, and facilitating the stable grinding of pipes of various inner diameters in cooperation with the grinding mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of one side of a positioning device for a steel pipe internal polishing machine proposed in the utility model;

[0024] Figure 2 This is a structural schematic diagram of the other side of a positioning device for an internal polishing machine for a steel pipe proposed in the present invention;

[0025] Figure 3 This is a diagram showing the internal structure of a guide seat of a positioning device for a steel pipe internal polishing machine proposed in the present invention;

[0026] Figure 4 This is an external schematic diagram of the grinding mechanism of a positioning device for an internal polishing machine for steel pipes proposed in the utility model.

[0027] Legend:

[0028] 1. Frame; 11. Machine tool; 12. Bracket; 13. Electric cylinder; 14. Mounting frame; 15. Pressure roller; 16. Guide rod; 2. Driving mechanism; 21. Sliding rod; 22. Bidirectional screw; 23. Driving slider; 24. Limiting slider; 25. Connecting shaft; 26. Roller; 27. Driving motor; 28. Driving gear; 29. ​​Driven gear; 3. Grinding mechanism; 31. Fastening telescopic rod; 32. Guide seat; 33. Connecting rod; 34. Mounting head; 35. Adjusting screw; 36. Guide block; 37. Grinding disc; 38. Adjusting shaft; 39. Hexagonal groove; 310. Bevel gear 1; 311. Bevel gear 2; 4. Pipeline. DETAILED DESCRIPTION

[0029] Reference Figure 1-4 The utility model provides a positioning device for a steel pipe internal polishing machine: it includes a frame 1, the frame 1 includes a machine tool 11 and a bracket 12 fixedly connected to the machine tool 11, a driving mechanism 2 is provided at the upper end of the machine tool 11, a pipe 4 is provided between the top plate of the bracket 12 and the driving mechanism 2, a grinding mechanism 3 is movably connected in the pipe 4, and the inner wall of the pipe 4 arranged on the driving mechanism 2 is ground and polished by the grinding mechanism 3.

[0030] The grinding mechanism 3 includes a mounting head 34 and a fastening telescopic rod 31 fixedly connected to the machine tool 11. An adjusting screw 35 is rotatably connected to the mounting head 34, and there are multiple adjusting screws 35. Guide blocks 36 are threadedly connected to the outer tube walls of the multiple adjusting screws 35. The other ends of the multiple guide blocks 36 pass through the mounting head 34 and are fixedly connected to the grinding disc 37. An adjusting shaft 38 is rotatably connected to the mounting head 34. A bevel gear 2 311 is fixedly sleeved on the outer wall of the adjusting shaft 38. One end of the multiple adjusting screws 35 is fixedly sleeved with a bevel gear 1 310, and the multiple bevel gears 1 310 are meshed with the bevel gear 2 311.

[0031] An electric cylinder 13 is fixedly connected to the top plate of the bracket 12, and the output end of the electric cylinder 13 is fixedly connected to the mounting bracket 14. A pressure wheel 15 is rotatably connected to the mounting bracket 14. There are multiple pressure wheels 15. Guide rods 16 are fixedly connected to both sides of the upper end surface of the mounting bracket 14. The upper ends of the two guide rods 16 pass through the top plate of the bracket 12. The mounting bracket 14 is driven to descend by the electric cylinder 13, and then the pressure wheel 15 is driven to press on the surface of the pipe 4, thereby increasing the friction between the pipe 4 and the roller 26 to prevent the pipe 4 from slipping.

[0032] The driving mechanism 2 includes a slide rod 21 and a bidirectional screw rod 22. The outer wall of the bidirectional screw rod 22 is threadedly connected to a driving slider 23. The outer wall of the slide rod 21 is slidably connected to a limit slider 24. A connecting shaft 25 is rotatably connected between the driving slider 23 and the limit slider 24. A roller 26 is sleeved on the outer wall of the connecting shaft 25, and the number of rollers 26 is multiple. The pipeline 4 is rotatably set on multiple rollers 26. The number of the driving slider 23, the limit slider 24 and the connecting shaft 25 is two, and the two driving sliders 23 are about the bidirectional screw rod 22. The two limit sliders 24 are symmetrically arranged about the center of the slide bar 21. The upper end of the driving slider 23 is fixedly connected to the driving motor 27, and the output end of the driving motor 27 is fixedly connected to the driving gear 28. The outer wall of the connecting shaft 25 is fixedly sleeved with a driven gear 29. The driving gear 28 is meshed with the driven gear 29. Starting the driving motor 27 drives the driving gear 28 to rotate, and then drives the driven gear 29 to rotate, and then drives the connecting shaft 25 to rotate, and then drives the roller 26 to rotate, thereby driving the pipeline 4 to rotate.

[0033] A servo motor is fixedly mounted on the outer wall of the bracket 12, and the output end of the servo motor is fixedly connected to one end of the bidirectional screw rod 22. One end of the adjusting shaft 38 passes through the mounting head 34 and is provided with an inner hexagonal groove 39. The upper end of the telescopic rod 31 is fixedly connected to the guide seat 32, and a connecting rod 33 is slidably sleeved in the guide seat 32. The mounting head 34 is fixedly connected to the outer wall of one end of the connecting rod 33. The servo motor drives the bidirectional screw rod 22 to rotate, and then the relative movement of the two drive sliders 23 can be controlled. The adjusting shaft 38 can be rotated by engaging the inner hexagonal groove 39 with a hexagonal wrench. The guide seat 32 is used to guide the connecting rod 33.

[0034] Working principle: According to the size of the pipe 4, the servo motor is started to drive the bidirectional screw 22 to rotate, and then the two driving sliders 23 are driven to move relative to each other, thereby driving the two connecting shafts 25 to move relative to each other, so as to facilitate the adjustment of the spacing between the rollers 26, so that the pipe 4 can be stably placed on the rollers 26, and then the electric cylinder 13 drives the mounting frame 14 to descend, thereby driving the pressure wheel 15 to press on the pipe 4, and then loosening the tightening telescopic rod 31 to drive the guide seat 32 to rise to the appropriate position, and then the connecting rod 33 drives the mounting head 34 through the pipe 4 to its other end, and then the hexagonal wrench is connected to the inner hexagonal groove 39 and the wrench is turned, and as the adjusting shaft 38 rotates, it drives the bevel gear 2 31 1 rotates, thereby driving multiple meshing bevel gears 1 310 to rotate, thereby driving multiple adjusting screws 35 to rotate, and then driving multiple guide blocks 36 to slide relative to the mounting head 34, thereby driving multiple grinding discs 37 to move, making it convenient for the grinding discs 37 to be pressed onto the inner wall of the pipe 4. At this time, the fastening telescopic rod 31 is tightened to fix the height of the connecting rod 33, and then the grinding discs 37 can be driven to move along the axial direction of the pipe 4 by pushing and pulling the connecting rod 33. At the same time, the driving motor 27 is started to drive the driving gear 28 to rotate, thereby driving the driven gear 29 to rotate, and then driving the connecting shaft 25 to rotate, and then driving the pipe 4 to rotate by driving the roller 26 to rotate, thereby achieving grinding of the inner wall of the pipe 4.

[0035] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A positioning device for a steel pipe internal polishing machine, comprising a frame (1), characterized in that: The frame (1) comprises a machine tool (11) and a bracket (12) fixedly connected to the machine tool (11); a driving mechanism (2) is provided at the upper end of the machine tool (11); a pipe (4) is provided between the top plate of the bracket (12) and the driving mechanism (2); a grinding mechanism (3) is movably sleeved in the pipe (4); The grinding mechanism (3) comprises a mounting head (34) and a fastening telescopic rod (31) fixedly connected to the machine tool (11); an adjusting screw (35) is rotatably connected in the mounting head (34), and the number of the adjusting screws (35) is multiple, and the outer tube walls of the multiple adjusting screws (35) are all threadedly connected with guide blocks (36); the other ends of the multiple guide blocks (36) all pass through the mounting head (34) and are fixedly connected with grinding discs (37); an adjusting shaft (38) is rotatably connected in the mounting head (34), and a bevel gear 2 (311) is fixedly sleeved on the outer wall of the adjusting shaft (38); one end of the multiple adjusting screws (35) is all fixedly sleeved with a bevel gear 1 (310), and the multiple bevel gears 1 (310) are all meshed with the bevel gear 2 (311).

2. A positioning device for a steel pipe internal polishing machine according to claim 1, characterized in that: An electric cylinder (13) is fixedly connected to the top plate of the bracket (12), an output end of the electric cylinder (13) is fixedly connected to a mounting frame (14), a pressure wheel (15) is rotatably connected to the mounting frame (14), a plurality of pressure wheels (15) are provided, and guide rods (16) are fixedly connected to both sides of the upper end surface of the mounting frame (14), and the upper ends of the two guide rods (16) are both arranged to pass through the top plate of the bracket (12).

3. A positioning device for a steel pipe internal polishing machine according to claim 1, characterized in that: The driving mechanism (2) comprises a slide rod (21) and a bidirectional screw rod (22); a driving slider (23) is threadedly connected to the outer wall of the bidirectional screw rod (22); a limiting slider (24) is slidably connected to the outer wall of the slide rod (21); a connecting shaft (25) is rotatably connected between the driving slider (23) and the limiting slider (24); a roller (26) is sleeved on the outer wall of the connecting shaft (25); and the number of the rollers (26) is plural, and the pipeline (4) is rotatably arranged on the plurality of rollers (26).

4. A positioning device for a steel pipe internal polishing machine according to claim 3, characterized in that: The number of the driving slider (23), the limiting slider (24) and the connecting shaft (25) is two, and the two driving sliders (23) are symmetrically arranged about the center of the bidirectional screw rod (22), and the two limiting sliders (24) are symmetrically arranged about the center of the slide rod (21).

5. The positioning device for a steel pipe internal polishing machine according to claim 3, characterized in that: The upper end of the driving slider (23) is fixedly connected to a driving motor (27), the output end of the driving motor (27) is fixedly connected to a driving gear (28), the outer wall of the connecting shaft (25) is fixedly sleeved with a driven gear (29), and the driving gear (28) is meshed with the driven gear (29).

6. A positioning device for a steel pipe internal polishing machine according to claim 1, characterized in that: A servo motor is fixedly mounted on the outer wall of the bracket (12), and an output end of the servo motor is fixedly connected to one end of a bidirectional screw rod (22). One end of the adjustment shaft (38) passes through the mounting head (34) and is provided with an inner hexagonal groove (39).

7. The positioning device for a steel pipe internal polishing machine according to claim 1, characterized in that: The upper end of the tightening telescopic rod (31) is fixedly connected to a guide seat (32), a connecting rod (33) is slidably sleeved in the guide seat (32), and the mounting head (34) is fixedly connected to the outer wall of one end of the connecting rod (33).

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