Grinding device for inner hole of metal pipe

Abstract

The metal pipe inner hole polishing device comprises a pipe clamping mechanism, a core rod mechanism and a scrap removing mechanism, the scrap removing mechanism comprises a water tank filled with water, an axial flow fan arranged on the water tank and a scrap suction pipe, the left end of the scrap suction pipe is communicated with a right opening of a pipe-shaped seat of the pipe clamping mechanism, and the right end of the scrap suction pipe is communicated with a central air inlet of the axial flow fan. Comprising a horizontal section extending in the front-back direction, an arc section bent downwards from back to front and a vertical section, and the sand suction flat pipe enables the rear end of the horizontal section to be communicated with a tangential air outlet of the axial flow fan, enables the front end of the horizontal section to be communicated with the rear end of the arc section, enables the lower end of the arc section to be communicated with the upper end of the vertical section and enables the lower end of the vertical section to be communicated with the water tank. When the axial flow fan runs, chippings located in the inner cavity of the tubular base and in the inner hole of the metal pipe can be sucked out through the chipping suction pipe and discharged into the water tank through the sand suction flat pipe to achieve chipping removal, no chippings are left on the contact portion of the grinding head and the inner hole of the metal pipe, the inner hole can be prevented from being scratched, and the grinding effect is better.

Description

Technical Field

[0001] This utility model relates to the field of internal hole grinding technology, specifically to a device for grinding the internal holes of metal pipes. Background Technology

[0002] Grinding the inner hole of a metal tube is a common processing method. During grinding, a mandrel with a grinding head is usually inserted into the inner hole of the metal tube, so that the metal tube and the grinding head rotate in opposite directions to grind the inner hole of the metal tube. During grinding, the residue on the inner wall that is ground off by the grinding head cannot be discharged from the metal tube in time, and it is easy to get crowded at the contact area between the grinding head and the inner hole of the metal tube, which will cause scratches on the inner hole and affect the surface quality of the inner hole of the metal tube. Utility Model Content

[0003] The purpose of this invention is to solve one or more problems in the prior art and to provide a metal tube inner hole grinding device.

[0004] To achieve the above objectives, the technical solution provided by this utility model is a metal tube inner hole grinding device, comprising:

[0005] A tube clamping mechanism is used to clamp a metal tube and drive it to rotate. The tube clamping mechanism includes a tubular seat, a three-jaw chuck, and a chuck motor. The tubular seat extends in the left-right direction. The three-jaw chuck is rotatably disposed at the left end of the tubular seat. The inner cavity of the three-jaw chuck is connected to the inner cavity of the tubular seat. The three-jaw chuck is used to clamp the metal tube to be polished. The chuck motor is used to drive the three-jaw chuck to rotate.

[0006] A core rod mechanism is provided on the left side of the tubular seat. The core rod mechanism includes a core rod, a movable frame, and a fixed frame. The core rod extends in the left-right direction. The left end of the core rod is rotatably mounted on the movable frame. The middle part of the core rod is supported on the fixed frame. A grinding head is connected to the right end of the core rod. The lowest point of the outer wall of the grinding head is flush with the lowest point of the inner hole of the metal tube clamped on the three-jaw chuck. The movable frame is movable left-right and is also provided with a core rod motor for driving the core rod to rotate.

[0007] The metal tube inner hole grinding device also includes a chip removal mechanism, which includes a water tank, an axial flow fan, a chip suction pipe, and a sand suction flat pipe. The water tank is located on the right side of the tubular base and is filled with water. The axial flow fan is mounted on the water tank. The left end of the chip suction pipe is connected to the right opening of the tubular base, and the right end is connected to the central air inlet of the axial flow fan. The sand suction flat pipe is bent in an inverted L-shape and includes a horizontal section, an arc section, and a vertical section. The horizontal section extends along the front-back direction... The horizontal section extends from back to front and downwards, with its rear end connected to the tangential outlet of the axial flow fan, its front end connected to the rear end of the horizontal section, its lower end connected to the upper end of the vertical section, and its lower end connected to the water tank. When the axial flow fan is running, it can suck out the debris located in the inner cavity of the tubular seat and the inner hole of the metal tube through the debris suction pipe, and discharge it into the water tank through the sand suction flat pipe, thereby achieving debris removal.

[0008] Preferably, the chip removal mechanism further includes a water spray flat pipe vertically connected to the horizontal section, the water spray flat pipe being used to spray water into the horizontal section to improve the chip removal effect of the chip removal mechanism.

[0009] More preferably, the water spray flat tube extends in the left-right direction, and the width of the inner cavity of the water spray flat tube in the left-right direction is 80%-95% of the width of the inner cavity of the horizontal section in the left-right direction.

[0010] More preferably, the chip removal mechanism further includes a water pipe, a water pump, and a water pump motor for supplying water to the water spray flat pipe. The water pipe includes a rigid pipe section and a flexible pipe section. The rigid pipe section extends in a left-right direction and lies across the top of the water spray flat pipe. The bottom of the rigid pipe section is connected to the top of the water spray flat pipe. The water pump is located at the bottom of the water tank and is submerged in water. The water pump motor is located on the water tank and is used to drive the water pump to pump water. One end of the flexible pipe section is connected to the rigid pipe section, and the other end extends downward through the top plate of the water tank and is connected to the outlet of the water pump.

[0011] More preferably, the left end of the rigid pipe section is provided with a plug, and the right end is connected to the flexible pipe section. The bottom of the rigid pipe section is also provided with an outlet for connecting to the water spray flat pipe. The outlet is a long strip extending in the left and right direction, and the length of the outlet in the left and right direction is equal to the width of the inner cavity of the water spray flat pipe in the left and right direction.

[0012] More preferably, the inner cavity of the arc segment is wider at the top and narrower at the bottom, and the water sprayed from the water spray flat pipe fills the lower end of the arc segment to enhance the dust suction effect of the axial flow fan.

[0013] Preferably, the dust collection tube is a steel wire hose, and the dust collection tube is S-shaped, so that the left end of the dust collection tube is lower than its right end.

[0014] Preferably, the top of the fixing frame is provided with a rotatable guide roller, which is used to support the core rod and extends in the front-rear direction.

[0015] More preferably, the two ends of the roller are provided with roller support plates, and the upper end of the roller support plate extends vertically upward and is higher than the highest point of the core rod.

[0016] Preferably, the clamping mechanism further includes a support box for supporting the tubular seat, and the core rod mechanism further includes a limiting baffle for limiting the front and rear position of the movable frame. The limiting baffle is disposed on the front and rear sides of the bottom roller of the movable frame and extends in the left and right direction.

[0017] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0018] The metal tube inner hole grinding device provided by this utility model includes a tube clamping mechanism, a core rod mechanism, and a chip removal mechanism. The chip removal mechanism includes a water tank filled with water, an axial flow fan mounted on the water tank, and a chip suction pipe whose left end connects to the right opening of the tubular seat of the tube clamping mechanism, and whose right end connects to the central air inlet of the axial flow fan. The chip suction pipe includes a horizontal section extending in the front-to-back direction, an arc section bending downwards from back to front, and a vertical section of a sand-suction flat pipe. The rear end of the horizontal section connects to the tangential air outlet of the axial flow fan, the front end of the horizontal section connects to the rear end of the arc section, the lower end of the arc section connects to the upper end of the vertical section, and the lower end of the vertical section connects to the water tank. When the axial flow fan is running, the chip suction pipe can suck out the debris located in the inner cavity of the tubular seat and the inner hole of the metal tube, and discharge it into the water tank through the sand-suction flat pipe, thus achieving chip removal. No debris remains at the contact point between the grinding head and the inner hole of the metal tube, avoiding scratches on the inner hole and resulting in better grinding performance. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of a preferred embodiment of the present invention.

[0020] Figure 2 yes Figure 1 A schematic diagram of the structure at the clamping tube mechanism.

[0021] Figure 3 yes Figure 1 A schematic diagram of the structure of the central core rod mechanism and the chip removal mechanism.

[0022] Figure 4 yes Figure 3 Enlarged cross-sectional view along the AA direction.

[0023] Figure 5yes Figure 4 Enlarged partial cross-sectional view at point B.

[0024] The components are as follows: 1. Metal pipe; 10. Pipe clamping mechanism; 11. Tubular seat; 12. Three-jaw chuck; 13. Support box; 20. Core rod mechanism; 21. Core rod; 22. Moving frame; 221. Roller; 23. Fixed frame; 231. Through roller; 232. Through roller support plate; 24. Grinding head; 25. Core rod motor; 26. Limiting baffle; 30. Chip removal mechanism; 31. Water tank; 311. Water; 32. Axial flow fan; 33. Chip suction pipe; 34. Sand suction flat pipe; 341. Horizontal section; 342. Arc section; 343. Vertical section; 35. Water spray flat pipe; 361. Rigid pipe section; 362. Flexible hose section; 363. Plug; 364. Adapter; 365. Water outlet; 37. Water pump; 38. Water pump motor. Detailed Implementation

[0025] The left and right directions described in this utility model are... Figure 1 The left-right direction in this invention refers to the front-back direction described in this utility model. Figure 1 The inside and outside directions.

[0026] like Figures 1 to 5As shown, the metal tube inner hole grinding device provided by this utility model includes a tube clamping mechanism 10, a core rod mechanism 20, and a chip removal mechanism 30. The tube clamping mechanism 10 is used to clamp the metal tube 1 and drive it to rotate. The tube clamping mechanism 10 includes a tubular seat 11, a three-jaw chuck 12, a chuck motor (not shown in the figure), and a support box 13. The tubular seat 11 extends in the left-right direction and is disposed on the support box 13. The support box 13 is used to support the tubular seat 11. The three-jaw chuck 12 is rotatably disposed at the left end of the tubular seat 11. The inner cavity of the three-jaw chuck 12 is connected to the inner cavity of the tubular seat 11. The three-jaw chuck 12 is used to clamp the tube to be ground. The metal tube 1 is driven by a chuck motor to rotate the three-jaw chuck 12. A core rod mechanism 20 is located on the left side of the tubular seat 11. The core rod mechanism 20 includes a core rod 21, a movable frame 22, and a fixed frame 23. The core rod 21 extends in the left-right direction. The left end of the core rod 21 is rotatably mounted on the movable frame 22, and the middle part of the core rod 21 is supported on the fixed frame 23. A grinding head 24 is connected to the right end of the core rod 21. The lowest point of the outer wall of the grinding head 24 is flush with the lowest point of the inner hole of the metal tube 1 clamped in the three-jaw chuck 12. The movable frame 22 is movable left-right and is also equipped with a mechanism for driving the core rod 21 to rotate. The moving core rod motor 25; the chip removal mechanism 30 includes a water tank 31, an axial flow fan 32, a chip suction pipe 33, and a sand suction flat pipe 34. The water tank 31 is located on the right side of the tubular seat 11 and is filled with water 311. The axial flow fan 32 is mounted on the water tank 31. The left end of the chip suction pipe 33 is connected to the right opening of the tubular seat 11, and the right end is connected to the central air inlet of the axial flow fan 32. The sand suction flat pipe 34 is bent in an inverted L-shape and includes a horizontal section 341, an arc section 342, and a vertical section 343. The horizontal section 341 extends in the front-to-back direction, and the arc section 342 bends downward from back to front. The rear end of the horizontal section 343 is connected to the tangential air outlet of the axial flow fan 32, the front end of the horizontal section 341 is connected to the rear end of the arc section 342, the lower end of the arc section 342 is connected to the upper end of the vertical section 343, and the lower end of the vertical section 343 is connected to the water tank 31. When the axial flow fan 32 is running, it can suck out the debris located in the inner cavity of the tubular seat 11 and the inner hole of the metal tube 1 through the chip suction pipe 33, and discharge it into the water tank 31 through the sand suction flat pipe 34 to achieve chip removal, so that no debris remains at the contact part between the grinding head 24 and the inner hole of the metal tube 1, thereby avoiding scratches on the inner hole and improving the grinding effect.

[0027] In this embodiment, the chip removal mechanism 30 further includes a water spray flat pipe 35 vertically connected to the horizontal section 341. The water spray flat pipe 35 is used to spray water into the horizontal section 341 to improve the chip removal effect of the chip removal mechanism 30. Specifically, the water spray flat pipe 35 extends in the left-right direction, and the width of the inner cavity of the water spray flat pipe 35 in the left-right direction is 80%-95% of the width of the inner cavity of the horizontal section 341 in the left-right direction. Further, the chip removal mechanism 30 also includes a water pipe, a water pump 37, and a water pump motor 38 for supplying water to the water spray flat pipe 35. The water pipe includes a rigid pipe section 361 and a flexible pipe section 362. The rigid pipe section 361 extends in the left-right direction and crosses the water spray flat pipe 35. Above, the bottom of the rigid pipe section 361 is connected to the top of the spray flat pipe 35. The water pump 37 is located at the bottom of the water tank 31 and is submerged in the water 311. The water pump motor 38 is located on the water tank 31 and is used to drive the water pump 37 to pump water. The output shaft of the water pump motor 38 is connected to the water pump 37 through a connecting rod that passes through the top plate of the water tank 31 to achieve driving. One end of the flexible pipe section 362 is connected to the rigid pipe section 361, and the other end extends downward through the top plate of the water tank 31 and is connected to the outlet of the water pump 37. When the water pump motor 38 is running, it can drive the water pump 37 to pump the water 311 into the flexible pipe section 362 and deliver it to the spray flat pipe 35 through the rigid pipe section 361.

[0028] Furthermore, the left end of the rigid pipe section 361 is provided with a plug 363, and the right end is connected to the flexible pipe section 362 through an adapter 364. The bottom of the rigid pipe section 361 is also provided with an outlet 365 for connecting to the water spray flat pipe 35. The outlet 365 is a long strip extending in the left and right direction, and the length of the outlet 365 in the left and right direction is equal to the width of the inner cavity of the water spray flat pipe 35 in the left and right direction.

[0029] In this embodiment, the inner cavity of the arc segment 342 is thicker at the top and thinner at the bottom. The water sprayed from the water spray flat pipe 35 fills the lower end of the arc segment 342, which can both wash away debris and form a water seal, thereby enhancing the debris suction effect of the axial flow fan 32. Furthermore, the debris suction pipe 33 is a steel wire hose, and the debris suction pipe 33 is S-shaped, so that the left end of the debris suction pipe 33 is lower than its right end.

[0030] To achieve the directional entry and exit of the grinding head 24, in this embodiment, the top of the fixed frame 23 is provided with a rotatable roller 231, which is used to support the core rod. The roller 231 extends in the front-back direction, and roller support plates 232 are provided at both ends of the roller 231. The upper end of the roller support plate 232 extends vertically upward and is higher than the highest point of the core rod 21. The core rod mechanism 20 also includes a limiting baffle 26 for limiting the front-back position of the moving frame 22. The limiting baffle 26 is provided on the front and rear sides of the bottom roller 221 of the moving frame 22 and extends in the left-right direction.

[0031] When the metal tube inner hole grinding device is started, the moving frame 22 moves to the left, sending the grinding head 24 into the inner hole of the metal tube 1. The grinding head 24 rotates in the opposite direction to the metal tube 1, and the core rod 21 moves back and forth to achieve grinding. During grinding, the chip removal mechanism 30 can remove the residue in the metal tube 1 and the tubular seat 11 in real time. After grinding, the surface quality of the inner hole of the metal tube 1 is good and meets the rolling requirements.

[0032] It should be noted that, for the convenience of adding water, in this embodiment, the top cover of the water tank 31 is provided with a rotatable cover plate, and the cover plate is also provided with a handle for easy lifting.

[0033] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.

Claims

1. A metal tube inner hole grinding device, comprising: A tube clamping mechanism is used to clamp a metal tube and drive it to rotate. The tube clamping mechanism includes a tubular seat, a three-jaw chuck, and a chuck motor. The tubular seat extends in the left-right direction. The three-jaw chuck is rotatably disposed at the left end of the tubular seat. The inner cavity of the three-jaw chuck is connected to the inner cavity of the tubular seat. The three-jaw chuck is used to clamp the metal tube to be polished. The chuck motor is used to drive the three-jaw chuck to rotate. A core rod mechanism is provided on the left side of the tubular seat. The core rod mechanism includes a core rod, a movable frame, and a fixed frame. The core rod extends in the left-right direction. The left end of the core rod is rotatably mounted on the movable frame. The middle part of the core rod is supported on the fixed frame. A grinding head is connected to the right end of the core rod. The lowest point of the outer wall of the grinding head is flush with the lowest point of the inner hole of the metal tube clamped on the three-jaw chuck. The movable frame is movable left-right and is also provided with a core rod motor for driving the core rod to rotate. Its features are: The metal tube inner hole grinding device also includes a chip removal mechanism, which includes a water tank, an axial flow fan, a chip suction pipe, and a sand suction flat pipe. The water tank is located on the right side of the tubular base and is filled with water. The axial flow fan is mounted on the water tank. The left end of the chip suction pipe is connected to the right opening of the tubular base, and the right end is connected to the central air inlet of the axial flow fan. The sand suction flat pipe includes a horizontal section, an arc section, and a vertical section. The horizontal section extends in the front-to-back direction, and the arc section... The horizontal section bends downwards from back to front. The rear end of the horizontal section is connected to the tangential air outlet of the axial flow fan, the front end of the horizontal section is connected to the rear end of the arc section, the lower end of the arc section is connected to the upper end of the vertical section, and the lower end of the vertical section is connected to the water tank. When the axial flow fan is running, it can suck out the debris located in the inner cavity of the tubular seat and the inner hole of the metal tube through the debris suction pipe, and discharge it into the water tank through the sand suction flat pipe, thereby achieving debris removal.

2. The metal tube inner hole grinding device according to claim 1, characterized in that: The chip removal mechanism also includes a water spray flat pipe vertically connected to the horizontal section, which is used to spray water into the horizontal section to improve the chip removal effect of the chip removal mechanism.

3. The metal tube inner hole grinding device according to claim 2, characterized in that: The water spray flat tube extends in the left-right direction, and the width of the inner cavity of the water spray flat tube in the left-right direction is 80%-95% of the width of the inner cavity of the horizontal section in the left-right direction.

4. The metal tube inner hole grinding device according to claim 2, characterized in that: The chip removal mechanism also includes a water pipe, a water pump, and a water pump motor for supplying water to the water spray flat pipe. The water pipe includes a rigid pipe section and a flexible pipe section. The rigid pipe section extends in a left-right direction and lies across the top of the water spray flat pipe. The bottom of the rigid pipe section is connected to the top of the water spray flat pipe. The water pump is located at the bottom of the water tank and is submerged in water. The water pump motor is located on the water tank and is used to drive the water pump to pump water. One end of the flexible pipe section is connected to the rigid pipe section, and the other end extends downward through the top plate of the water tank and is connected to the outlet of the water pump.

5. The metal tube inner hole grinding device according to claim 4, characterized in that: The rigid pipe section has a plug at its left end and is connected to the flexible pipe section at its right end. The bottom of the rigid pipe section is also provided with an outlet for connecting to the water spray flat pipe. The outlet is a long strip extending in the left and right direction, and the length of the outlet in the left and right direction is equal to the width of the inner cavity of the water spray flat pipe in the left and right direction.

6. The metal tube inner hole grinding device according to claim 2, characterized in that: The inner cavity of the arc segment is wider at the top and narrower at the bottom. Water sprayed from the water spray flat pipe fills the lower end of the arc segment to enhance the dust suction effect of the axial flow fan.

7. The metal tube inner hole grinding device according to claim 1, characterized in that: The dust collection tube is a steel wire hose, and the dust collection tube is S-shaped, so that the left end of the dust collection tube is lower than its right end.

8. The metal tube inner hole grinding device according to claim 1, characterized in that: The top of the fixing frame is provided with a rotatable roller, which is used to support the core rod and extends in the front-to-back direction.

9. The metal tube inner hole grinding device according to claim 8, characterized in that: The roller is provided with roller support plates at both ends, and the upper end of the roller support plate extends vertically upward and is higher than the highest point of the core rod.

10. The metal tube inner hole grinding device according to claim 1, characterized in that: The clamping mechanism further includes a support box for supporting the tubular seat, and the core rod mechanism further includes a limiting baffle for limiting the front and rear position of the movable frame. The limiting baffle is located on the front and rear sides of the bottom roller of the movable frame and extends in the left and right direction.

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