Pipe cutting inner wall automatic polishing machine

Abstract

The application discloses a pipe cutting inner wall automatic polishing machine, which comprises a rack and a crossbeam. The rack is provided with a driving mechanism. The crossbeam is arranged on the driving mechanism and can move along a rectangular track in a vertical plane under the action of the driving mechanism. The rack is provided with a pipe clamping mechanism. Two sides of the crossbeam are provided with flexible polishing mechanisms. The flexible polishing mechanism comprises an X-direction translation mechanism and a grinding machine. The X-direction translation mechanism is arranged on the crossbeam. The X-direction translation mechanism is provided with a Y-direction elastic action mechanism. The Y-direction elastic action mechanism is provided with a Z-direction elastic action mechanism. The Z-direction elastic action mechanism is provided with an X-direction elastic action mechanism. The grinding machine is arranged on the X-direction elastic action mechanism. The application has the advantages of rapid and uniform polishing, good polishing effect, reduced labor intensity and improved production efficiency.

Description

Technical Field

[0001] This invention relates to a grinding machine, and more particularly to an automatic grinding machine for the inner wall of a pipe cutting opening. Background Technology

[0002] In the heavy industry, after rectangular tubes, square tubes and other pipe fittings are cut, there will be burrs and protrusions on the inner wall of the cut opening. In order to ensure the subsequent welding quality, it is necessary to grind the inner wall of the cut opening to remove the burrs and protrusions around the perimeter.

[0003] Currently, the inner wall of the cut opening of pipe fittings is ground manually. Manual grinding requires a high level of worker skill, is labor-intensive, inefficient, and produces uneven grinding with poor results, making it difficult to meet production schedule requirements. Summary of the Invention

[0004] This invention addresses the problems of high worker skill requirements, high labor intensity, and low efficiency associated with manual grinding of the inner walls of pipe fitting cuts. It provides an automatic grinding machine for the inner walls of pipe fitting cuts that offers fast, uniform grinding, good grinding results, reduced labor intensity, and increased production efficiency.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic grinding machine for the inner wall of a pipe fitting cut opening, comprising a frame and a crossbeam, wherein a driving mechanism is provided on the frame, and the crossbeam is mounted on the driving mechanism and can move along a rectangular trajectory in a vertical plane under the action of the driving mechanism; a pipe fitting clamping mechanism is provided on the frame, and flexible grinding mechanisms are provided on both sides of the crossbeam; the flexible grinding mechanism includes an X-axis translation mechanism and a grinding machine; the X-axis translation mechanism is mounted on the crossbeam, and a Y-axis elastic action mechanism is mounted on the X-axis translation mechanism; a Z-axis elastic action mechanism is mounted on the Y-axis elastic action mechanism; an X-axis elastic action mechanism is mounted on the Z-axis elastic action mechanism; and the grinding machine is mounted on the X-axis elastic action mechanism. In this invention, the pipe is placed on top of the frame. The pipe clamping mechanism is used to clamp and fix the pipe placed on the frame to prevent it from moving during grinding. A pipe positioning mechanism can be set on top of the frame for precise positioning of the pipe. The X-axis translation mechanism is used to move the grinding machine closer to or away from the pipe so that the grinding head can enter or exit the cutting opening of the pipe. The drive mechanism drives the crossbeam to move in a rectangular trajectory so that the grinding head of the grinding machine moves along the inner wall of the pipe for grinding. The X-axis elastic action mechanism, Y-axis elastic action mechanism and Z-axis elastic action mechanism can make the grinding machine move to a certain extent in the X, Y and Z directions, increasing the adjustment margin and making the grinding head form elastic contact with the inner wall of the pipe during grinding. During grinding, the grinding head can make full contact with the inner wall of the pipe, which not only ensures the grinding effect but also avoids damage to the grinding head. At the same time, the X-axis elastic action mechanism allows the grinding machine to move back and forth in the X direction for grinding.

[0006] Preferably, the drive mechanism includes a Y-axis linear slide module and a Z-axis linear slide module. The Y-axis linear slide module is fixed to the frame, and the Z-axis linear slide module is fixed to the slide of the Y-axis linear slide module. The crossbeam is fixedly connected to the slide of the Z-axis linear slide module. Both the Y-axis and Z-axis linear slide modules are driven by servo motors, and both are conventional structures in the art.

[0007] Preferably, the pipe clamping mechanism includes a clamping cylinder and a clamping plate. The clamping cylinder is fixedly connected to the frame, and the clamping plate is fixedly connected to the piston rod end of the clamping cylinder. The clamping plate can move up and down under the action of the clamping cylinder. When the clamping plate descends, it clamps the pipe; when it rises, it releases the pipe.

[0008] Preferably, the X-axis translation mechanism includes a slide cylinder, which is fixedly connected to the crossbeam, and the Y-axis elastic action mechanism is disposed on the slide of the slide cylinder.

[0009] Preferably, the Y-axis elastic action mechanism includes a Y-axis linear guide slider, a Y-axis guide rail connecting plate, a first fixed plate, a middle partition plate, and a second fixed plate. The Y-axis guide rail connecting plate is disposed on the X-axis translation mechanism, and the guide rail of the Y-axis linear guide slider is disposed on the Y-axis guide rail connecting plate. The slider of the Y-axis linear guide slider is provided with a Y-axis moving base plate. The first fixed plate and the second right fixed plate are located outside one end of the Y-axis moving base plate and are fixed to the Y-axis guide rail connecting plate. The middle partition plate is located between the first left fixed plate and the second fixed plate and is fixed to the Y-axis moving base plate. Y-axis buffer springs are fixed between the first fixed plate and the middle partition plate and between the second fixed plate and the middle partition plate, respectively. When the Y-axis buffer spring is in its natural state, it presses against the partition plate, thus keeping the Y-axis moving base plate stationary. When the Y-axis moving base plate is subjected to force (i.e., the grinding machine is subjected to force in the Y direction), the Y-axis buffer spring on one side of the partition plate is compressed / stretched, and the Y-axis buffer spring on the other side of the partition plate is correspondingly stretched / compressed, so that the Y-axis base plate can move along the guide rail of the Y-axis linear guide slider, thereby moving the grinding machine along the Y direction. When the Y-axis buffer spring returns to its original position, the partition plate returns to its original position, and at the same time, the Y-axis moving base plate and the grinding machine return to their original positions.

[0010] Preferably, the Z-axis elastic action mechanism includes an inner vertical plate, an outer vertical plate, a Z-axis linear guide slider, and a Z-axis guide rail connecting plate. The inner and outer vertical plates are fixed relative to each other on the Y-axis movable base plate. The Z-axis guide rail connecting plate is located between the inner and outer vertical plates. The slider of the Z-axis linear guide slider is fixed on the inner vertical plate, and the guide rail of the Z-axis linear guide slider is fixed on the Z-axis guide rail connecting plate. The Z-axis guide rail connecting plate can slide relative to the inner vertical plate. A spring baffle is provided on the upper part of the inner side of the outer vertical plate, and a spring fixing plate is provided on the inner side of the Z-axis guide rail connecting plate. A Z-axis buffer spring is fixed between the spring baffle and the spring fixing plate, and between the spring fixing plate and the Y-axis movable base plate. When the Z-axis buffer spring is in its natural state, it presses against the spring fixing plate, thus keeping the Z-axis guide rail connecting plate fixed. When the Z-axis guide rail connecting plate is subjected to force (i.e., the grinding machine is subjected to force in the Z direction), the Z-axis buffer spring located on the upper side of the spring fixing plate is compressed / stretched, and the Z-axis buffer spring located on the lower side of the spring fixing plate is correspondingly stretched / compressed, thereby causing the Z-axis guide rail connecting plate to move along the Z direction, and in turn causing the grinding machine to move along the Z direction. When the Z-axis buffer spring returns to its original position, the spring fixing plate returns to its original position, and at the same time, it drives the Z-axis guide rail connecting plate and the grinding machine to return to their original positions.

[0011] Preferably, the X-axis elastic action mechanism includes an X-axis linear guide slider and an X-axis guide rail connecting plate. The X-axis guide rail connecting plate is fixed on the Z-axis guide rail connecting plate, and the guide rail of the X-axis linear guide slider is fixed on the X-axis guide rail connecting plate. An X-axis movable base plate is fixed on the slider of the X-axis linear guide slider. The grinding machine is mounted on the X-axis movable base plate, and an X-axis rocking spring is provided between the X-axis movable base plate and the X-axis guide rail connecting plate. When the X-axis movable base plate is subjected to force (i.e., the grinding machine is subjected to force in the X direction), the X-axis rocking spring bends, causing the X-axis movable base plate to move along the guide rail of the X-axis linear guide slider, thereby causing the grinding machine to move in the X direction. When the X-axis rocking spring returns to its original position, the X-axis movable base plate returns to its original position, simultaneously driving the X-axis movable base plate and the grinding machine to return to their original positions.

[0012] Preferably, the device also includes a pipe flipping mechanism, which includes a mini cylinder and a rotating plate. One end of the rotating plate is hinged to the frame, the cylinder body of the mini cylinder is hinged to the frame, the piston rod of the mini cylinder is hinged to the middle of the rotating plate, an electromagnet is provided on the inner side of the rotating plate, a pad is provided on the outer side of the rotating plate, and a limiting plate for horizontal limiting is provided at the bottom of the rotating plate. When the piston rod of the mini cylinder extends, the rotating plate is horizontal. The polished pipe is placed on the rotating plate. After the electromagnet is energized and attracts the pipe, the piston rod of the mini cylinder retracts, and the rotating plate and the pipe rotate clockwise at a certain angle (preferably 45°) to tilt them. Then, the electromagnet is de-energized for a certain period of time, and the iron filings produced after polishing fall off. When the electromagnet is energized again, the piston rod of the mini cylinder extends, and the rotating plate and the pipe rotate counterclockwise until the rotating plate is horizontal. The electromagnet is de-energized, and the pipe can be removed. The limiting plate can interfere with the frame to limit the rotation plate. The pad is used to support the pipe so that it can be kept horizontal.

[0013] Preferably, the frame is equipped with a pipe-blocking mechanism, which includes a U-shaped pipe-blocking groove fixed to the frame, and a blocking rod fixed inside the U-shaped pipe-blocking groove. The blocking mechanism is used to block the pipe after the electromagnet is de-energized, preventing the pipe from falling. At the same time, the U-shaped pipe-blocking groove also serves as a guide, so that even if iron filings fall along the U-shaped pipe-blocking groove, they can be collected. After the electromagnet is de-energized, the pipe slides down and collides with the blocking rod, and under the action of inertia, the iron filings generated by grinding can be completely dropped off.

[0014] Preferably, the system also includes a pipe ejection mechanism for pushing the pipe onto the rotating plate. The pipe ejection mechanism includes a rodless cylinder and a pusher plate. The rodless cylinder is fixed to the frame, and the pusher plate is fixedly connected to the movable slider of the rodless cylinder. The pipe ejection mechanism is used to automatically push the polished pipe onto the rotating plate.

[0015] Therefore, the present invention has the following beneficial effects: it can grind quickly and evenly, achieve good grinding results, reduce labor intensity, and improve production efficiency. Attached Figure Description

[0016] Figure 1 This is a perspective view of the present invention.

[0017] Figure 2 This is a 3D view of the flexible polishing mechanism.

[0018] Figure 3 yes Figure 2 The exploded diagram.

[0019] Figure 4 This is a schematic diagram showing the connection of the first fixed plate, the middle partition plate, the second fixed plate, the Y-direction buffer spring, and the inner vertical plate.

[0020] Figure 5 This is a schematic diagram showing the connection between the X-axis elastic motion mechanism and the Z-axis elastic motion mechanism.

[0021] Figure 6 This is a schematic diagram showing the coordination of the pipe fitting flipping mechanism, the pipe fitting blocking mechanism, and the pipe fitting ejection mechanism.

[0022] In the diagram: 1. Frame; 2. Crossbeam; 3. Grinding machine; 4. Y-axis linear slide module; 5. Z-axis linear slide module; 6. Clamping cylinder; 7. Clamping plate; 8. Slide cylinder; 9. Y-axis linear guide slider; 10. Y-axis guide rail connecting plate; 11. First fixed plate; 12. Middle partition plate; 13. Second fixed plate; 14. Y-axis moving base plate; 15. Y-axis buffer spring; 16. Inner vertical plate; 17. Outer vertical plate; 18. Z-axis linear guide slider; 19. Z-axis guide rail connecting plate; 20. Spring baffle; 21. Spring fixing plate; 22. Z-axis buffer spring; 23. X-axis linear guide slider; 24. X-axis guide rail connecting plate; 25. X-axis moving base plate; 26. X-axis rocker spring; 27. Mini cylinder; 28. Rotating plate; 29. ​​Electromagnet; 30. Pad; 31. Limiting plate; 32. U-shaped tube blocking groove; 33. Blocking rod; 34. Rodless cylinder; 35. Push plate; 36. Tube. Detailed Implementation

[0023] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0024] like Figure 1 The automatic grinding machine for the inner wall of pipe cutting openings shown includes a frame 1, a crossbeam 2, a pipe flipping mechanism, a pipe blocking mechanism, and a pipe pushing mechanism for pushing the pipe onto a rotating plate. The frame is equipped with a drive mechanism, which includes a Y-axis linear slide module 4 and a Z-axis linear slide module 5. The Y-axis linear slide module is fixed to the frame, and the Z-axis linear slide module is fixed to the slide of the Y-axis linear slide module. The crossbeam is fixedly connected to the slide of the Z-axis linear slide module. The crossbeam can move along a rectangular trajectory in a vertical plane under the action of the Y-axis and Z-axis linear slide modules. The frame is also equipped with a pipe clamping mechanism, which includes a clamping cylinder 6 and a clamping plate 7. The clamping cylinder is fixedly connected to the frame, and the clamping plate is fixedly connected to the end of the piston rod of the clamping cylinder.

[0025] Flexible grinding mechanisms (such as) are provided on both sides of the crossbeam. Figure 2 , Figure 3(As shown), the flexible polishing mechanism includes an X-axis translation mechanism and a polishing machine 3. The X-axis translation mechanism includes a slide cylinder 8, which is fixedly connected to the crossbeam. A Y-axis elastic action mechanism is provided on the moving slide of the slide cylinder. A Z-axis elastic action mechanism is provided on the Y-axis elastic action mechanism, and an X-axis elastic action mechanism is provided on the Z-axis elastic action mechanism. The Y-axis elastic action mechanism includes a Y-axis linear guide slider 9, a Y-axis guide rail connecting plate 10, a first fixed plate 11, a middle partition plate 12, and a second fixed plate 13 (as shown). Figure 4 As shown), the Y-axis guide rail connecting plate is set on the moving slide of the slide cylinder, the guide rail of the Y-axis linear guide slider is set on the Y-axis guide rail connecting plate, the slider of the Y-axis linear guide slider is provided with a Y-axis moving base plate 14, the first fixed plate and the second right fixed plate are located on the outer side of one end of the Y-axis moving base plate and are fixed to the Y-axis guide rail connecting plate, the middle partition plate is located between the first left fixed plate and the second fixed plate and is fixed to the Y-axis moving base plate, and Y-axis buffer springs 15 are fixed between the first fixed plate and the middle partition plate and between the second fixed plate and the middle partition plate, respectively.

[0026] The Z-axis elastic action mechanism includes an inner vertical plate 16, an outer vertical plate 17, a Z-axis linear guide slider 18, and a Z-axis guide rail connecting plate 19. The inner and outer vertical plates are fixed relative to each other on the Y-axis movable base plate. The Z-axis guide rail connecting plate is located between the inner and outer vertical plates. The slider of the Z-axis linear guide slider is fixed on the inner vertical plate, and the guide rail of the Z-axis linear guide slider is fixed on the Z-axis guide rail connecting plate. The Z-axis guide rail connecting plate can slide relative to the inner vertical plate. A spring baffle 20 is provided on the upper part of the inner side of the outer vertical plate, and a spring fixing plate 21 is provided on the inner side of the Z-axis guide rail connecting plate (e.g., ...). Figure 5 As shown), a Z-axis buffer spring 22 is fixed between the spring baffle and the spring fixing plate, and between the spring fixing plate and the Y-axis moving base plate;

[0027] The X-axis elastic motion mechanism includes an X-axis linear guide slider 23 and an X-axis guide rail connecting plate 24. The X-axis guide rail connecting plate is fixed on the Z-axis guide rail connecting plate. The guide rail of the X-axis linear guide slider is fixed on the X-axis guide rail connecting plate. An X-axis movable base plate 25 is fixed on the slider of the X-axis linear guide slider. The grinding machine is set on the X-axis movable base plate. An X-axis rocking spring 26 is provided between the X-axis movable base plate and the X-axis guide rail connecting plate. The grinding machine is fixed on the X-axis movable base plate.

[0028] The fitting ejection mechanism and the fitting flipping mechanism are located on both sides of the fitting clamping machine. The fitting flipping mechanism includes a mini cylinder 27 and a rotating plate 28 (e.g., ...). Figure 6As shown), one end of the rotating plate is hinged to the frame, the cylinder body of the mini cylinder is hinged to the frame, the piston rod of the mini cylinder is hinged to the middle of the rotating plate, an electromagnet 29 is provided on the inner side of the rotating plate, a pad 30 is provided on the outer side of the rotating plate, and a limiting plate 31 for horizontal limiting is provided at the bottom of the rotating plate; the pipe ejection mechanism includes a rodless cylinder 34 and a pusher plate 35, the rodless cylinder is fixed on the frame, and the pusher plate is fixedly connected to the movable slider of the rodless cylinder; the pipe blocking mechanism includes a U-shaped pipe blocking groove 32, the U-shaped pipe blocking groove is fixed on the frame, and a blocking rod 33 is fixed in the U-shaped pipe blocking groove.

[0029] The method of using this invention is as follows: The cut pipe fitting 36 is placed on the frame. The clamping cylinder is activated, the clamping plate clamps the pipe fitting, and the slide cylinder is activated, driving the grinding machines on both sides of the crossbeam to approach the pipe fitting until the grinding head of the grinding machine extends into the pipe fitting. The Y-axis linear slide module and the Z-axis linear slide module operate alternately, driving the crossbeam to move along a rectangular trajectory in the vertical plane, simultaneously driving the grinding machines to grind the inner wall of the cut opening of the pipe fitting. During the grinding process, with the cooperation of the X-axis elastic action mechanism, the Y-axis elastic action mechanism, and the Z-axis elastic action mechanism, the grinding machine has a certain adjustment margin in the X, Y, and Z directions. After grinding, the clamping cylinder is activated, the clamping plate loosens the clamping fitting, and the rodless cylinder is activated, driving the pusher plate to push the fitting onto the rotating plate. The rodless cylinder is activated again, driving the pusher plate to reset. After the electromagnet is energized and attracts the fitting, the piston rod of the mini cylinder retracts, and the rotating plate and fitting rotate clockwise until they tilt at 45°. Then, the electromagnet is de-energized for a certain period of time (0.5 seconds), and the fitting is blocked by the blocking rod, causing the iron filings generated after grinding to fall along the U-shaped fitting blocking groove. When the electromagnet is energized again, the piston rod of the mini cylinder extends, causing the rotating plate and fitting to rotate counterclockwise until the rotating plate is horizontal. The electromagnet is then de-energized, and the fitting can be removed.

[0030] The embodiments described above are merely preferred embodiments of the present invention and are not intended to limit the present invention in any way. Other variations and modifications are possible without departing from the technical solutions described in the claims.

Claims

1. An automatic grinding machine for the inner wall of a pipe fitting cut, characterized in that, The machine includes a frame (1) and a crossbeam (2). The frame is equipped with a drive mechanism, and the crossbeam is mounted on the drive mechanism and can move along a rectangular trajectory in a vertical plane under the action of the drive mechanism. The frame is equipped with a pipe clamping mechanism, and the crossbeam is equipped with flexible grinding mechanisms on both sides. The flexible grinding mechanism includes an X-axis translation mechanism and a grinding machine (3). The X-axis translation mechanism is mounted on the crossbeam, and the X-axis translation mechanism is equipped with a Y-axis elastic motion mechanism. The Y-axis elastic motion mechanism is equipped with a Z-axis elastic motion mechanism, and the Z-axis elastic motion mechanism is equipped with an X-axis elastic motion mechanism. The grinding machine is mounted on the X-axis elastic motion mechanism. The elastic action mechanism includes a Y-axis linear guide slider (9), a Y-axis guide rail connecting plate (10), a first fixed plate (11), a middle partition plate (12), and a second fixed plate (13). The Y-axis guide rail connecting plate is mounted on the X-axis translation mechanism. The guide rail of the Y-axis linear guide slider is mounted on the Y-axis guide rail connecting plate. The slider of the Y-axis linear guide slider is provided with a Y-axis moving base plate (14). The first fixed plate and the second right fixed plate are located outside one end of the Y-axis moving base plate and are fixed to the Y-axis guide rail connecting plate. The middle partition plate is located between the first left fixed plate and the second fixed plate and is fixed to the Y-axis moving base plate. The first fixed plate and the middle partition plate are... Y-axis buffer springs (15) are fixed between the positions of the two fixed plates and between the second fixed plate and the middle partition plate, respectively; the Z-axis elastic action mechanism includes an inner plate (16), an outer plate (17), a Z-axis linear guide slider (18), and a Z-axis guide rail connecting plate (19). The inner plate and the outer plate are fixed relative to each other on the Y-axis moving base plate. The Z-axis guide rail connecting plate is located between the inner plate and the outer plate. The slider of the Z-axis linear guide slider is fixed on the inner plate, and the guide rail of the Z-axis linear guide slider is fixed on the Z-axis guide rail connecting plate. The Z-axis guide rail connecting plate can slide relative to the inner plate. A spring baffle (20) is provided on the upper part of the inner side of the outer plate. The Z-axis guide rail... A spring fixing plate (21) is provided on the inner side of the connecting plate. A Z-direction buffer spring (22) is fixed between the spring baffle and the spring fixing plate and between the spring fixing plate and the Y-direction moving base plate. The X-direction elastic action mechanism includes an X-direction linear guide slider (23) and an X-direction guide rail connecting plate (24). The X-direction guide rail connecting plate is fixed on the Z-direction guide rail connecting plate. The guide rail of the X-direction linear guide slider is fixed on the X-direction guide rail connecting plate. An X-direction moving base plate (25) is fixed on the slider of the X-direction linear guide slider. The grinding machine is set on the X-direction moving base plate. An X-direction rocking spring (26) is provided between the X-direction moving base plate and the X-direction guide rail connecting plate.

2. The automatic grinding machine for the inner wall of pipe fitting cut openings according to claim 1, characterized in that, The drive mechanism includes a Y-axis linear slide module (4) and a Z-axis linear slide module (5). The Y-axis linear slide module is fixed on the frame, and the Z-axis linear slide module is fixed on the slide of the Y-axis linear slide module. The crossbeam is fixedly connected to the slide of the Z-axis linear slide module.

3. The automatic grinding machine for the inner wall of pipe fitting cut openings according to claim 1, characterized in that, The pipe clamping mechanism includes a clamping cylinder (6) and a clamping plate (7). The clamping cylinder is fixedly connected to the frame, and the clamping plate is fixedly connected to the end of the piston rod of the clamping cylinder.

4. The automatic grinding machine for the inner wall of pipe fitting cut openings according to claim 1, characterized in that, The X-axis translation mechanism includes a slide cylinder (8), which is fixedly connected to the crossbeam, and the Y-axis elastic action mechanism is set on the slide of the slide cylinder.

5. An automatic grinding machine for the inner wall of a pipe fitting cut according to claim 1, characterized in that, It also includes a pipe flipping mechanism, which includes a mini cylinder (27) and a rotating plate (28). One end of the rotating plate is hinged to the frame, the cylinder body of the mini cylinder is hinged to the frame, the piston rod of the mini cylinder is hinged to the middle of the rotating plate, an electromagnet (29) is provided on the inner side of the rotating plate, a pad (30) is provided on the outer side of the rotating plate, and a limiting plate (31) for horizontal limiting is provided at the bottom of the rotating plate.

6. An automatic grinding machine for the inner wall of a pipe fitting cut according to claim 5, characterized in that, The frame is provided with a pipe blocking mechanism, which includes a U-shaped pipe blocking groove (32) fixed on the frame, and a blocking rod (33) fixed in the U-shaped pipe blocking groove.

7. An automatic grinding machine for the inner wall of a pipe fitting cut according to claim 5 or 6, characterized in that, It also includes a pipe ejection mechanism for pushing the pipe onto the rotating plate, the pipe ejection mechanism including a rodless cylinder (34) and a pusher plate (35), the rodless cylinder being fixed on the frame and the pusher plate being fixedly connected to the movable slider of the rodless cylinder.

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