Polishing machine for inner hole of stainless steel pipe

Abstract

The utility model discloses a stainless steel pipe inner hole polishing machine, which belongs to the technical field of stainless steel pipe processing, and comprises a support frame and a rotating rod, an anti-skidding seat is connected below the support frame, and two sliding rods are connected on the support frame. The steel pipe is sleeved in the polishing disc through an external device, and the polishing disc is tightly attached to the inner wall of the upper end of the steel pipe. A third motor and a first motor are started, the third motor synchronously drives a rotating rod and a grinding disc to rotate, the inner wall of the steel pipe is ground, meanwhile, the controller records the rotating speed of the third motor, the first motor drives a sliding plate to move through a gear and toothed plate system so as to assist cleaning, and a rotating speed sensor monitors the third motor; the controller activates a second motor, the positions of a moving frame and a sliding sleeve are adjusted through a threaded rod and a nut system, it is ensured that the grinding disc makes contact with the inner wall of the steel pipe, and when the rotating speed returns to a preset value, the second motor stops, so that the polishing effect is kept, and the problem of grinding disc abrasion is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of stainless steel pipe processing, in particular to a stainless steel pipe inner hole polishing machine. Background Art

[0002] The stainless steel pipe inner hole polishing machine is a mechanical equipment specially used for polishing the inside of stainless steel pipes. It uses the built-in polishing wheel to rotate at high speed while reciprocating along the inner wall of the stainless steel pipe, thereby achieving efficient and uniform inner hole surface polishing, improving the smoothness and aesthetics of the inner wall of the pipe. It is suitable for processing stainless steel pipes of various diameters and wall thicknesses, and is widely used in medical equipment, food processing, chemical industry and other industries.

[0003] Current stainless steel pipe inner hole polishing machines are generally equipped with grinding wheels that match the inner diameter of the steel pipe. These grinding wheels have a certain elasticity to ensure close fit with the inner wall of the steel pipe, thereby achieving a uniform polishing effect. However, during the polishing process, if the grinding wheel wears, its fit with the inner wall of the steel pipe will be reduced, which may cause a gap between the grinding wheel and the inner wall. In this case, the polishing efficiency of the grinding wheel will decrease, thereby affecting the final polishing quality of the inner wall of the stainless steel pipe.

[0004] Based on this, the utility model designs a stainless steel pipe inner hole polishing machine to solve the above problems. Utility Model Content

[0005] The purpose of the utility model is to solve the problem that during the polishing process, if the grinding wheel is worn, its fit with the inner wall of the steel pipe will be reduced, which may cause a gap between the grinding wheel and the inner wall. In this case, the polishing efficiency of the grinding wheel will be reduced, thereby affecting the final polishing quality of the inner wall of the stainless steel pipe. A stainless steel pipe inner hole polishing machine is proposed.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A stainless steel pipe inner hole polishing machine includes a support frame and a rotating rod. An anti-slip seat is connected to the bottom of the support frame, and two sliding rods are connected to the top of the support frame. The sliding rod is slidably connected to a moving device for sliding outside the sliding rod. The moving device is connected to an adjustment device for maintaining fit with the inner wall of the steel pipe. The outer sleeve of the sliding rod is provided with a limiting device for limiting the rotating rod. A tooth plate is connected to the inside of the support frame. The rotating rod is installed in the adjusting device. A grinding disc is provided on the outside of the rotating rod.

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

[0009] The moving device includes a slide plate, two sliding sleeves are connected under the slide plate, and the sliding sleeves are slidably connected to the outside of the slide rod. A first motor is connected under the slide plate, and an output end of the first motor is connected to a gear, which is meshed with a gear plate.

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

[0011] The adjusting device includes a frame, which is installed on a skateboard. Three second motors are connected to the frame. The output ends of the second motors are connected to a reducer. The output end of the reducer is connected to a threaded rod. The threaded rod is rotatably connected to the frame. The external thread of the threaded rod is connected to a nut. The outer sleeve of the nut is provided with a moving frame. The moving frame is connected to a third motor. The third motor is connected to a speed sensor. A controller is installed in the frame. The speed sensor and the controller are electrically connected.

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

[0013] Six sliding columns are connected inside the frame, two sliding shells are connected outside the movable frame, and the sliding shells are sleeved outside the sliding columns.

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

[0015] The second motor is electrically connected to the controller.

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

[0017] The limiting device includes a fixed plate, which is installed on the sliding rod. Three connecting plates are connected to the fixed plate. Four fixed blocks are connected to the connecting plate. The same connecting rod is connected to two adjacent fixed blocks. Two sliding blocks are slidably connected to the outside of the connecting rod. Two return springs are provided on the outer sleeve of the connecting rod. The opposite surfaces of the two sliding blocks are connected to fixed shafts. The same rotating wheel is connected to the two fixed shafts.

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

[0019] One end of the return spring is connected under the fixed block, and the other end of the return spring is connected to the sliding block.

[0020] As a further description of the above technical solution:

[0021] The rotating rod is slidably connected to the two rotating wheels.

[0022] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0023] 1. In the present invention, an external device is used to insert a steel pipe into a grinding disc, and the grinding disc is brought into close contact with the inner wall of the upper end of the steel pipe. The third motor and the first motor are started, and the third motor synchronously drives the rotating rod and the grinding disc to rotate, grinding the inner wall of the steel pipe. At the same time, the controller records the speed of the third motor. The first motor drives the slide to move to assist in cleaning through a gear and toothed plate system. The speed sensor monitors the third motor. If the speed exceeds the set value, the controller activates the second motor and adjusts the position of the moving frame and the sliding sleeve through a threaded rod and nut system to ensure that the grinding disc maintains contact with the inner wall of the steel pipe. When the speed returns to the preset value, the second motor stops, thereby maintaining the polishing effect and addressing the problem of grinding disc wear.

[0024] 2. In the present invention, when the rotating rod is in the process of position adjustment, the rotating rod applies a thrust to the upper rotating wheel, so that the rotating wheel drives the fixed shaft and the slider to slide outside the connecting rod, and then squeezes the upper pull-back spring. When the lower pull-back spring loses pressure, the lower pull-back spring applies an elastic force to the lower slider, so that the slider moves upward, so that the two rotating wheels always keep overlapping. At this time, it can be ensured that the rotating rod will not separate from the rotating wheels when the position is adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a three-dimensional structural diagram of a stainless steel pipe inner hole polishing machine proposed by the utility model;

[0026] Figure 2 This is a three-dimensional structural diagram of a moving device of a stainless steel pipe inner hole polishing machine proposed by the utility model;

[0027] Figure 3 This is a three-dimensional structural diagram of a limiting device for a stainless steel pipe inner hole polishing machine proposed by the utility model;

[0028] Figure 4 A stainless steel pipe inner hole polishing machine proposed by this utility model Figure 3 A schematic diagram of the structure of the enlarged part A;

[0029] Legend:

[0030] 1. Support frame; 2. Anti-slip seat; 3. Slide rod; 4. Moving device; 41. Slide plate; 42. Slide sleeve; 43. First motor; 44. Gear; 5. Adjusting device; 51. Frame; 52. Second motor; 53. Reducer; 54. Threaded rod; 55. Nut; 56. Moving frame; 57. Third motor; 58. Speed ​​sensor; 59. Controller; 6. Limiting device; 61. Fixed plate; 62. Connecting plate; 63. Fixed block; 64. Connecting rod; 65. Slider; 66. Return spring; 67. Fixed shaft; 68. Rotating wheel; 7. Tooth plate; 8. Rotating rod; 9. Grinding disc. DETAILED DESCRIPTION

[0031] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0032] See also Figures 1-4 ,

[0033] First embodiment:

[0034] The utility model provides a technical solution: a stainless steel pipe inner hole polishing machine, including a support frame 1, a rotating rod 8, an anti-slip seat 2 is connected to the support frame 1, two sliding rods 3 are connected to the support frame 1, the sliding rod 3 is slidably connected to a moving device 4 for sliding outside the sliding rod 3, the moving device 4 is connected to an adjustment device 5 for maintaining fit with the inner wall of the steel pipe, the sliding rod 3 is outer-disposed with a limiting device 6 for limiting the rotating rod 8, the support frame 1 is internally connected with a tooth plate 7, the rotating rod 8 is installed in the adjusting device 5, and the rotating rod 8 is clamped with a grinding disc 9.

[0035] Specifically, such as Figure 2-3 As shown, the moving device 4 includes a slide plate 41, and two sliding sleeves 42 are connected under the slide plate 41. The sliding sleeves 42 are slidably connected to the outside of the slide rod 3. By setting the sliding sleeves 42, the slide rod 3 limits the sliding sleeves 42 to prevent the sliding sleeves 42 from shaking when sliding; a first motor 43 is connected under the slide plate 41, and the output end of the first motor 43 is connected to a gear 44, and the gear 44 is engaged with the gear plate 7. The adjusting device 5 includes a frame 51, which is installed on the slide plate 41, and three second motors 52 are connected to the frame 51. The output end of the second motor 52 is connected to a reducer 53, and the output end of the reducer 53 is connected to a threaded rod 54, and the threaded rod 54 is rotatably connected to the frame 51. The threaded rod 54 is externally threaded and connected to a nut 55, and the outer sleeve of the nut 55 is provided with There is a moving frame 56, and a third motor 57 is connected to the moving frame 56. A speed sensor 58 is connected to the third motor 57. A controller 59 is installed in the frame 51. By setting the speed sensor 58 and the controller 59, the speed sensor 58 monitors the motor speed in real time, and the sensor transmits the speed signal to the controller 59. After analyzing the signal, the controller 59 adjusts the operating state of the second motor 52 according to the preset parameters to ensure that the second motor 52 runs accurately at a predetermined speed, thereby achieving efficient and stable motor control; the speed sensor 58 is electrically connected to the controller 59, six sliding columns are connected to the frame 51, and two sliding shells are connected to the outside of the moving frame 56, and the sliding shells are arranged outside the sliding columns. The second motor 52 is electrically connected to the controller 59.

[0036] During operation, the steel pipe is sleeved on the outside of the grinding disc 9 through an external rotating device, and the grinding disc 9 is tightly attached to the upper inner wall of the steel pipe. At this time, the third motor 57 and the first motor 43 are started, and the third motor 57 drives the rotating rod 8 and the grinding disc 9 to rotate synchronously. At this time, the grinding disc 9 grinds the inner wall of the steel pipe. At this time, the speed of the third motor 57 is recorded by the controller 59. At the same time, the first motor 43 drives the gear 44 to rotate and move outside the tooth plate 7, thereby driving the slide plate 41 to move. During the cleaning process, the speed sensor 58 monitors the output end of the third motor 57. Real-time monitoring, when the rotation speed is greater than the set value of the controller 59, the controller 59 controls the second motor 52 to run, and then drives the threaded rod 54 to rotate. When the threaded rod 54 rotates, it drives the nut 55 to move, and at this time drives the movable frame 56 and the sliding sleeve 42 to slide outside the sliding column. When the rotation speed reaches the preset value, the controller 59 controls the second motor 52 to stop, so that during the polishing process, the grinding disc 9 can be adjusted in time after being worn, so that the grinding disc 9 is always overlapped with the inner wall of the steel pipe, thereby improving the polishing effect of the inner wall of the steel pipe.

[0037] Second embodiment:

[0038] Specifically, such as Figure 4 As shown, the limit device 6 includes a fixed plate 61, which is mounted on the slide rod 3, and three connecting plates 62 are connected to the fixed plate 61, and four fixed blocks 63 are connected inside the connecting plate 62. The two adjacent fixed blocks 63 are connected to the same connecting rod 64, and the connecting rod 64 is slidably connected to two sliders 65. The outer sleeve of the connecting rod 64 is provided with two return springs 66. By setting the return springs 66, when the return springs 66 lose pressure, the return springs 66 exert elastic force on the slider 65, so that the slider 65 is quickly reset and ensures that the two rotating wheels 68 are always overlapped; the opposite surfaces of the two sliders 65 are connected to fixed shafts 67, and the two fixed shafts 67 are connected to the same rotating wheel 68, one end of the return spring 66 is connected under the fixed block 63, and the other end of the return spring 66 is connected to the slider 65, and the rotating rod 8 is slidably connected to the two rotating wheels 68.

[0039] When the rotating rod 8 is in the process of position adjustment, the rotating rod 8 applies a thrust to the upper rotating wheel 68, so that the rotating wheel 68 drives the fixed shaft 67 and the slider 65 to slide outside the connecting rod 64, and then squeezes the upper return spring 66. When the lower return spring 66 loses pressure, the lower return spring 66 applies an elastic force to the lower slider 65, so that the slider 65 moves upward, so that the two rotating wheels 68 always remain overlapped. At this time, it can be ensured that the rotating rod 8 will not separate from the rotating wheels when adjusting the position.

[0040] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A stainless steel pipe inner hole polishing machine, comprising a support frame (1) and a rotating rod (8), characterized in that: The support frame (1) is connected to an anti-slip seat (2) at the bottom, and two slide bars (3) are connected to the support frame (1). The slide bars (3) are slidably connected to a moving device (4) for sliding outside the slide bars (3). The moving device (4) is connected to an adjusting device (5) for maintaining contact with the inner wall of the steel pipe. The outer sleeve of the slide bar (3) is provided with a limiting device (6) for limiting the position of the rotating rod (8). The support frame (1) is connected to a tooth plate (7). The rotating rod (8) is installed in the adjusting device (5). The rotating rod (8) is provided with a grinding disc (9) on the outside.

2. A stainless steel pipe inner hole polishing machine according to claim 1, characterized in that: The moving device (4) includes a slide plate (41), two sliding sleeves (42) are connected to the bottom of the slide plate (41), and the sliding sleeves (42) are slidably connected to the outside of the slide rod (3). A first motor (43) is connected to the bottom of the slide plate (41), and an output end of the first motor (43) is connected to a gear (44), and the gear (44) is meshed with the tooth plate (7).

3. A stainless steel pipe inner hole polishing machine according to claim 2, characterized in that: The regulating device (5) comprises a frame (51), the frame (51) being mounted on the slide (41), the frame (51) being connected to three second motors (52), the output ends of the second motors (52) being connected to a reducer (53), the output end of the reducer (53) being connected to a threaded rod (54), the threaded rod (54) being rotatably connected in the frame (51), the threaded rod (54) being externally threadedly connected to a nut (55), the outer cover of the nut (55) being provided with a moving frame (56), the moving frame (56) being connected to a third motor (57), the third motor (57) being connected to a speed sensor (58), the frame (51) being mounted with a controller (59), the speed sensor (58) being electrically connected to the controller (59).

4. A stainless steel pipe inner hole polishing machine according to claim 3, characterized in that: Six sliding columns are connected inside the frame (51), and two sliding shells are connected outside the movable frame (56), and the sliding shells are sleeved outside the sliding columns.

5. A stainless steel pipe inner hole polishing machine according to claim 4, characterized in that: The second motor (52) is electrically connected to the controller (59).

6. A stainless steel pipe inner hole polishing machine according to claim 1, characterized in that: The limiting device (6) includes a fixed plate (61), which is installed on the sliding rod (3). Three connecting plates (62) are connected to the fixed plate (61), four fixed blocks (63) are connected to the connecting plate (62), and the same connecting rod (64) is connected to two adjacent fixed blocks (63). The connecting rod (64) is slidably connected to two sliders (65) on the outside, and the outer cover of the connecting rod (64) is provided with two return springs (66). The opposite surfaces of the two sliders (65) are connected to a fixed shaft (67), and the two fixed shafts (67) are connected to the same rotating wheel (68).

7. A stainless steel pipe inner hole polishing machine according to claim 6, characterized in that: One end of the return spring (66) is connected to the bottom of the fixed block (63), and the other end of the return spring (66) is connected to the slider (65).

8. A stainless steel pipe inner hole polishing machine according to claim 7, characterized in that: The rotating rod (8) is slidably connected in the two rotating wheels (68).

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