Polishing equipment capable of embedding rubber ring for connecting pipe

Abstract

The invention relates to the technical field of connecting pipe machining, in particular to a connecting pipe polishing device capable of embedding a rubber ring, which comprises a clamping unit and an inner wall polishing unit, the clamping unit vertically clamps the connecting pipe, the inner wall polishing unit is in sliding fit with the inner wall of the connecting pipe in the vertical direction, the inner wall polishing unit comprises a water spraying head and a polishing assembly, and the water spraying head and the polishing assembly are arranged from top to bottom in the vertical direction; the inner wall polishing unit moves into the connecting pipe from bottom to top in the vertical direction when polishing the inner wall of the connecting pipe, the polishing assembly has a rotating axis in the vertical direction when polishing the inner wall of the connecting pipe, the water spraying head synchronously rotates along with the polishing assembly, and the water spraying direction of the water spraying head is always parallel to the radial direction of the connecting pipe. According to the polishing assembly, the situation that metal chippings remain in the annular groove is avoided, meanwhile, the dry grinding phenomenon is avoided, and the service life of the polishing assembly is prolonged.

Description

Technical Field

[0001] The present invention relates to the technical field of connecting pipe processing, and specifically relates to a polishing device for a connecting pipe capable of embedding rubber rings. Background Art

[0002] When processing general metal connecting pipes, most of them are to make the metal connecting pipes lean against the grinding belt by a manipulator. Usually, the grinding belt mostly grinds one place on the outer wall of the metal connecting pipe. Therefore, it is necessary for the manipulator to drive the metal connecting pipe to rotate and displace accordingly, which affects the grinding efficiency. Moreover, the manipulator has a complex structure and a high procurement cost.

[0003] Chinese Patent Publication No. CN113305660A discloses a processing and forming machine for automotive air-conditioning metal connecting pipes, including a base, a supporting unit and a grinding unit. The supporting unit is arranged at the upper end of the base, and the grinding unit is installed inside the supporting unit. Among them: the supporting unit includes a supporting plate, telescopic columns, limiting plates, a supporting plate and a fixing component. Among them: the supporting plates are symmetrically installed on the upper end of the base from left to right. The upper side inside the supporting plates is equally spaced with rotating chutes from front to back. A transmission groove communicated with the rotating chutes is opened at the lower end of the rotating chutes. The telescopic columns are rotatably arranged at the rotating chutes of the supporting plates. Limiting plates slidably connected to the outer side walls of the supporting plates are arranged on the opposite sides of the telescopic columns. And a supporting plate is hinged on the opposite sides of the telescopic columns. A linkage groove is opened inside the supporting plate, and a first annular groove is opened at the upper end of the linkage groove. The fixing component is arranged at the upper end of the supporting plate.

[0004] The above solution grinds the outer pipe wall of the metal connecting pipe by driving the metal connecting pipe to rotate, but cannot grind the inner wall of the metal connecting pipe. In the prior art, there are already devices capable of grinding the inner wall of the metal connecting pipe. However, it should be noted that metal chips will be generated when grinding the inner wall of the metal connecting pipe, and most devices for grinding the inner wall of the metal connecting pipe do not have a chip cleaning function. The existing treatment method is to blow away the residual chips in the metal connecting pipe by a blower after grinding. In order to improve the sealing performance when connecting the metal connecting pipes, some existing inner walls of the connecting pipes are provided with annular grooves for placing sealing rings. In this way, when grinding, a large amount of metal chips will accumulate in the annular grooves. And due to the concavity of the annular grooves, when cleaning with a blower after grinding, the metal chips remaining in the annular grooves are difficult to be completely cleaned, resulting in difficulties in installing the subsequent sealing rings. At the same time, the metal chips remaining in the annular grooves will also damage the sealing rings during subsequent use. Summary of the Invention

[0005] To solve the above problems, a polishing device for a connecting pipe capable of embedding rubber rings is provided. By vertically arranging the connecting pipe and using a clamping unit to drive the connecting pipe to move in the vertical direction, and at the same time arranging an inner wall polishing unit below the connecting pipe, the connecting pipe can be wetted by a water spray head first during the process of descending in the vertical direction, and then the inner wall of the wetted connecting pipe passes through a polishing assembly. When the polishing assembly polishes the inner wall of the wetted connecting pipe, there will be no dry grinding phenomenon. Moreover, the water flowing on the inner wall of the connecting pipe flows from top to bottom under the action of gravity, and the flowing water will surely pass through the connection between the polishing assembly and the inner wall of the connecting pipe. In this way, the water can immediately wash away the metal debris polished off, and also reduce the temperature at the connection between the polishing assembly and the connecting pipe, extending the service life of the polishing assembly. At the same time, because the water has adsorption and the size of the annular groove is limited, the flowing water can completely wash the annular groove, avoiding the situation of metal debris residue in the annular groove, and ensuring the normal installation and use of the subsequent sealing ring.

[0006] To solve the problems of the prior art, the present invention provides a polishing device for a connecting pipe capable of embedding rubber rings, including a clamping unit and an inner wall polishing unit; the clamping unit vertically clamps the connecting pipe, and the inner wall polishing unit is slidably matched with the inner wall of the connecting pipe in the vertical direction. The inner wall polishing unit includes a water spray head and a polishing assembly. The water spray head and the polishing assembly are arranged vertically from top to bottom. When the inner wall polishing unit polishes the inner wall of the connecting pipe, it moves into the connecting pipe from bottom to top in the vertical direction. When the polishing assembly polishes the inner wall of the connecting pipe, it has a rotation axis in the vertical direction. The water spray head rotates synchronously with the polishing assembly, and the water spraying direction of the water spray head is always parallel to the radial direction of the connecting pipe.

[0007] Preferably, the water spray head is a rotating body structure, and a plurality of water outlets are uniformly arranged around the axis of the water spray head. The water outlets sprinkle water on the inner wall of the connecting pipe to form a wetting area, and the wetting areas formed by adjacent two water outlets on the inner wall of the connecting pipe are in an intersecting state.

[0008] Preferably, the polishing assembly includes a polishing head that extends under the action of centrifugal force and contacts the inner wall of the connecting pipe, and a reset assembly that drives the polishing head to retract after losing centrifugal force.

[0009] Preferably, the reset assembly includes a connecting arm fixedly connected to one end of the polishing head. The polishing heads are arranged in an annular array, a coil spring is arranged in the ring formed by the polishing heads, and a transmission assembly is arranged between the coil spring and the end of the connecting arm far from the polishing head. The polishing head rotates around the connection between the connecting arm and the transmission assembly.

[0010] Preferably, a water receiving shell for receiving clean water is arranged outside the inner wall polishing unit, and the liquid level of the clean water stored in the water receiving shell is lower than the polishing assembly.

[0011] Preferably, a water supply pipe is provided through the bottom of the water containing shell along the axis direction of the water containing shell. The water supply pipe passes through the center of the polishing assembly vertically and is communicated with the water spraying head. A driving unit for driving the water supply pipe to rotate around its own axis is arranged at the lower part of the water supply pipe.

[0012] Preferably, a plurality of stirring members for stirring the clear water in the water containing shell are evenly arranged around the water supply pipe on the side wall of the water supply pipe.

[0013] Preferably, a rotary connector is arranged at the bottom of the water supply pipe, a connecting pipe is arranged between the rotary connector and the water containing shell, and a pump body is arranged on the connecting pipe.

[0014] Preferably, an annular isolation plate is arranged in the water containing shell. The isolation plate divides the water containing shell into a first cavity and a second cavity from the inside to the outside. A filter plate for communicating the first cavity and the second cavity is arranged on the isolation plate, and the connection part of the connecting pipe and the water containing shell is located in the second cavity.

[0015] Preferably, the clamping unit includes a clamping jaw for clamping the connecting pipe. A receiving ring for receiving the connecting pipe is arranged below the clamping jaw, and the inner diameter of the inner ring of the receiving ring is equal to the inner diameter of the connecting pipe.

[0016] The beneficial effects of the present invention compared with the prior art are as follows: 1. By arranging the connecting pipe vertically, driving the connecting pipe to move vertically by using the clamping unit, and arranging an inner wall polishing unit below the connecting pipe, the connecting pipe can be wetted by the water spraying head first during the process of descending vertically. Then, the inner wall of the wetted connecting pipe passes through the polishing assembly. When the polishing assembly polishes the inner wall of the wetted connecting pipe, there will be no dry grinding phenomenon. And the water flow sprayed on the inner wall of the connecting pipe flows from top to bottom under the action of gravity. The flowing water will surely pass through the connection part between the polishing assembly and the inner wall of the connecting pipe. In this way, the water flow can immediately wash away the polished metal debris, reduce the temperature at the connection part between the polishing assembly and the connecting pipe, extend the service life of the polishing assembly. At the same time, because the water flow has adsorption property and the size of the annular groove is limited, the flowing water can completely wash the annular groove, avoiding the situation of metal debris residue in the annular groove, and ensuring the normal installation and use of the subsequent sealing ring.

[0017] 2. By setting up a water-containing shell, the polished connecting pipe can be gradually immersed in the water of the water-containing shell driven by the clamping unit. In this way, a small amount of metal debris remaining on the inner wall of the connecting pipe can be washed by the water in the water-containing shell. This is because when the water spray head sprays water on the inner wall of the connecting pipe, it is impossible to ensure complete coverage of the inner wall of the connecting pipe during the downward flow of the water, that is, the water flow will be inclined during the downward flow, resulting in some metal debris adhering to the inner wall of the connecting pipe. When the connecting pipe falls into the water of the water-containing shell, the metal debris adhering to the connecting pipe can fall to the bottom of the water-containing shell under the action of its own gravity. At the same time, the liquid level of the clean water stored in the water-containing shell is made lower than the polishing assembly, avoiding a large resistance when the polishing assembly polishes the inner wall of the connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0019] Figure 2 is a side view of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0020] Figure 3 is a Figure 2 cross-sectional schematic diagram taken along line A-A of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0021] Figure 4 is a cutaway three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0022] Figure 5 is a Figure 4 partial enlarged schematic diagram at position B of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0023] Figure 6 is a three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention after removing the water-containing shell.

[0024] Figure 7 is a three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention after removing the water-containing shell and the clamping unit.

[0025] Figure 8 is a three-dimensional schematic diagram of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention when the polishing assembly is rotating.

[0026] Figure 9 is a Figure 8 partial enlarged schematic diagram at position C of a polishing device for a connecting pipe capable of embedding rubber rings according to the present invention.

[0027] Figure 10The invention discloses a cutaway stereoscopic schematic diagram of a polishing assembly in a polishing device for a connecting pipe capable of embedding a rubber ring when the polishing assembly is in rotation.

[0028] Figure 11 The invention discloses a stereoscopic schematic diagram of a polishing assembly in a polishing device for a connecting pipe capable of embedding a rubber ring when the polishing assembly is in a non-rotating state.

[0029] The numbers in the figure are: 1. Clamping unit; 11. Clamping claw; 12. Receiver ring; 13. Telescopic unit; 14. Lifting unit; 2. Inner wall polishing unit; 21. Polishing assembly; 211. Polishing head; 212. Connecting arm; 213. Coil spring; 214. First gear ring; 215. First gear; 22. Spray head; 23. Water supply pipe; 231. Agitator; 24. Driving unit; 241. Second gear; 242. Second gear ring; 243. Rotary drive; 3. Connecting pipe; 31. Annular groove; 4. Water container shell; 41. Connecting pipe; 42. Rotary connector; 43. Pump body; 44. Isolation plate; 45. Filter plate. DETAILED DESCRIPTION

[0030] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0031] Reference Figures 1 - 3 and Figure 5 : A polishing device for a connecting pipe with an embedded rubber ring, comprising a clamping unit 1 and an inner wall polishing unit 2; the clamping unit 1 vertically clamps the connecting pipe 3, the inner wall polishing unit 2 and the inner wall of the connecting pipe 3 slide together in the vertical direction, the inner wall polishing unit 2 comprises a water spray head 22 and a polishing assembly 21, the water spray head 22 and the polishing assembly 21 are arranged from top to bottom in the vertical direction, the inner wall polishing unit 2 moves into the connecting pipe 3 from bottom to top in the vertical direction when polishing the inner wall of the connecting pipe 3, the polishing assembly 21 has a rotation axis in the vertical direction when polishing the inner wall of the connecting pipe 3, the water spray head 22 rotates synchronously with the polishing assembly 21, and the water spraying direction of the water spray head 22 is always parallel to the radial direction of the connecting pipe 3.

[0032] During the polishing process of the existing polishing equipment applicable to the connecting pipe 3, the connecting pipe 3 is mostly horizontally placed, and the inner or outer wall surfaces of most connecting pipes 3 have consistency. Thus, when polishing an ordinary connecting pipe 3, especially when polishing the inner wall of an ordinary connecting pipe 3, although a certain amount of metal debris will remain on the inner wall of the ordinary connecting pipe 3 after polishing, by blowing and cleaning the inner wall of the ordinary connecting pipe 3 with a blower, the residual metal debris in the inner wall of the ordinary connecting pipe 3 can be completely cleaned. However, the structure of the connecting pipe 3 polished in the present invention is different from that of the ordinary connecting pipe 3, that is, an annular groove 31 is provided on the inner wall of the connecting pipe 3 polished in the present invention, and the annular groove 31 is used to place a sealing ring, and the sealing ring is used to improve the connection tightness. Thus, if the connecting pipe 3 is polished horizontally, the residual debris will accumulate in the annular groove 31, which has a great influence on the subsequent installation of the sealing ring.

[0033] In order to avoid the metal debris that cannot be discharged remaining in the annular groove 31 of the connecting pipe 3, the polishing equipment is further designed. The specific structure and working process of the polishing equipment are as follows: The inner wall polishing unit 2 is always set vertically. Before polishing, the connecting pipe 3 is clamped by the clamping unit 1. At this time, the connecting pipe 3 is in a vertical state, and the inner wall polishing unit 2 is located below the connecting pipe 3. Subsequently, the clamping unit 1 drives the connecting pipe 3 to move downward along the vertical direction. At the same time, the polishing assembly 21 starts to rotate, and the water spray head 22 located in the upper part of the polishing assembly 21 rotates synchronously with the polishing assembly 21, and at this time the water spray head 22 starts to spray water. Since the water spray head 22 is located in the upper part of the polishing assembly 21, in the process of the clamping unit 1 driving the connecting pipe 3 to descend, the water spray head 22 enters the inside of the connecting pipe 3 from the lower part of the connecting pipe 3 before the polishing assembly 21. In this way, the water spray head 22 can pre-wet the inner wall of the connecting pipe 3. As the connecting pipe 3 continues to descend, the wetted inner wall of the connecting pipe 3 will pass through the polishing assembly 21, thereby improving the wettability of the inner wall of the connecting pipe 3 and avoiding the situation of dry grinding during the polishing process of the polishing assembly 21. At the same time, during the process of the polishing assembly 21 polishing the inner wall of the connecting pipe 3, the water spray head 22 located in the upper part of the polishing assembly 21 is always in an operating state. The water flow sprayed by the water spray head 22 can completely cover the inner wall of the connecting pipe 3 for one week. Under the action of gravity and the adsorption force of the water flow itself, the water flow flowing down along the vertical direction can carry away the remaining metal debris in the annular groove 31 when passing through the annular groove 31. When the polishing assembly 21 moves relative to the connecting pipe 3 to the upper end of the connecting pipe 3, the polishing of the connecting pipe 3 is completed. At this time, the polishing assembly 21 stops rotating, the water spray head 22 continues to spray water, the clamping unit 1 drives the polished connecting pipe 3 to rise along the vertical direction, and then the clamping unit 1 loosens the connecting pipe 3, and the staff can remove the connecting pipe 3. In this way, the situation that a large amount of metal debris remains in the annular groove 31 after polishing can be avoided.

[0034] By setting the connecting pipe 3 vertically, using the clamping unit 1 to drive the connecting pipe 3 to move along the vertical direction, and at the same time setting the inner wall polishing unit 2 below the connecting pipe 3, the connecting pipe 3 can be wetted by the water spray head 22 first in the process of descending along the vertical direction, and then the wetted inner wall of the connecting pipe 3 passes through the polishing assembly 21. When the polishing assembly 21 polishes the wetted inner wall of the connecting pipe 3, there will be no dry grinding phenomenon, and the water flow sprayed on the inner wall of the connecting pipe 3 flows downward from top to bottom under the action of gravity. The flowing water flow will inevitably pass through the connection between the polishing assembly 21 and the inner wall of the connecting pipe 3. In this way, the water flow can immediately wash away the polished metal debris and reduce the temperature at the connection between the polishing assembly 21 and the connecting pipe 3, extending the service life of the polishing assembly 21. At the same time, due to the adsorbability of the water flow and the limited size of the annular groove 31, the flowing water flow can completely wash the annular groove 31, avoiding the situation of metal debris remaining in the annular groove 31 and ensuring the normal installation and use of the subsequent sealing ring.

[0035] Refer to Figures 1 - 11:The water spray head 22 is a rotating body structure. A plurality of water outlets are uniformly arranged on the water spray head 22 around the axis of the water spray head 22. The water outlets sprinkle water on the inner wall of the connecting pipe 3 to form a wetting area, and the wetting areas formed by two adjacent water outlets on the inner wall of the connecting pipe 3 intersect.

[0036] Since the wetting areas formed by two adjacent water outlets on the inner wall of the connecting pipe 3 intersect, when the water spray head 22 is turned on and the clamping unit 1 drives the connecting pipe 3 to move up and down in the vertical direction, the wetting area formed by the water spray head 22 spraying water on the inner wall of the connecting pipe 3 can completely cover the inner wall of the connecting pipe 3, ensuring that there are no blind spots on the inner wall of the connecting pipe 3.

[0037] Refer to Figure 8 : The polishing assembly 21 includes a polishing head 211 that extends under the action of centrifugal force and contacts the inner wall of the connecting pipe 3, and a reset assembly that drives the polishing head 211 to retract after losing centrifugal force.

[0038] Refer to Figures 9 - 11 : The reset assembly includes a connecting arm 212 fixedly connected to one end of the polishing head 211. The polishing heads 211 are arranged in a circular array. A spiral spring 213 is arranged in the circle formed by the polishing heads 211. A transmission assembly is arranged between the spiral spring 213 and the end of the connecting arm 212 away from the polishing head 211. The polishing head 211 rotates around the connection between the connecting arm 212 and the transmission assembly.

[0039] The transmission assembly includes a first gear 215 fixedly arranged at the end of the connecting arm 212 and a first toothed ring 214 arranged above the spiral spring 213. The first gear 215 meshes with the first toothed ring 214, and one end of the spiral spring 213 is fixedly connected to the bottom of the first toothed ring 214. When the polishing assembly 21 starts to rotate, the polishing head 211 gradually extends under the action of centrifugal force. At this time, the connecting arm 212 rotates under the traction of the polishing head 211, and then the first gear 215 arranged at the end of the connecting arm 212 drives the first toothed ring 214 to rotate. At this time, the spiral spring 213 starts to wind up. Thus, when the polishing is finished and the polishing assembly 21 stops rotating, the reset elastic force generated by the spiral spring 213 can make the polishing head 211 contract.

[0040] Refer to Figure 2 and Figure 3 : A water receiving shell 4 for receiving clean water is arranged outside the inner wall polishing unit 2, and the liquid level of the clean water stored in the water receiving shell 4 is lower than that of the polishing assembly 21.

[0041] By setting up the water-containing shell 4, the polished connecting pipe 3 can be gradually immersed in the water in the water-containing shell 4 driven by the clamping unit 1. In this way, a small amount of metal debris remaining on the inner wall of the connecting pipe 3 can be washed by the water in the water-containing shell 4. This is because when the spray head 22 sprays water on the inner wall of the connecting pipe 3, it is impossible to ensure complete coverage of the inner wall of the connecting pipe 3 during the downward flow of the water, that is, the water flow will be inclined during the downward flow, so that some metal debris adheres to the inner wall of the connecting pipe 3. When the connecting pipe 3 falls into the water in the water-containing shell 4, the metal debris attached to the connecting pipe 3 can fall to the bottom of the water-containing shell 4 under the action of its own gravity. At the same time, the liquid level of the clean water stored in the water-containing shell 4 is made lower than the polishing assembly 21, avoiding a large resistance when the polishing assembly 21 polishes the inner wall of the connecting pipe 3.

[0042] Refer to Figure 3 and Figure 7 : A water supply pipe 23 is arranged through the bottom of the water-containing shell 4 along the axis direction of the water-containing shell 4. The water supply pipe 23 passes through the center of the polishing assembly 21 in the vertical direction and is communicated with the spray head 22. A driving unit 24 for driving the water supply pipe 23 to rotate around its own axis is arranged at the lower part of the water supply pipe 23.

[0043] The driving unit 24 includes a second toothed ring 242 fixedly sleeved on the periphery of the extension pipe. The second toothed ring 242 is located below the water-containing shell 4. A second gear 241 is meshed on one side of the second toothed ring 242. A rotary driver 243 for driving the second gear 241 to rotate is arranged at the end of the second gear 241. The rotary driver 243 is preferably a servo motor. Refer to Figure 5 : A plurality of stirring members 231 for stirring the clean water in the water-containing shell 4 are uniformly arranged around the water supply pipe 23 on the side wall of the water supply pipe 23.

[0044] When the water supply pipe 23 rotates, the stirring members 231 stir the water in the water-containing shell 4, making the water in the water-containing shell 4 form a vortex. In this way, when the connecting pipe 3 is immersed in the water in the water-containing shell 4, the rotating water flow can completely wash down the remaining metal debris in the inner wall of the connecting pipe 3.

[0045] Refer to Figure 6 and Figure 7 : A rotary connector 42 is arranged at the bottom of the water supply pipe 23. A connecting pipe 41 is arranged between the rotary connector 42 and the water-containing shell 4. A pump body 43 is arranged on the connecting pipe 41.

[0046] The pump body 43 pumps water from the water-containing shell 4 into the water supply pipe 23 through the connecting pipe 41, and then the water is sprayed out by the spray head 22.

[0047] Refer to Figure 4: In the water containing shell 4, there is a partition plate 44 with an annular structure. The partition plate 44 divides the water containing shell 4 into a first cavity and a second cavity from the inside to the outside. The partition plate 44 is provided with a filter plate 45 that connects the first cavity and the second cavity. The connection part of the connecting pipe 41 and the water containing shell 4 is located in the second cavity.

[0048] By setting the filter plate 45, it is ensured that the water entering the connecting pipe 41 can be filtered in advance, and the polished metal chips are retained in the first cavity.

[0049] Refer to Figure 4 and Figure 6 : The clamping unit 1 includes a clamping jaw 11 for clamping the connecting pipe 3. Below the clamping jaw 11, there is a receiving ring 12 for receiving the connecting pipe 3. The inner diameter of the inner ring of the receiving ring 12 is equal to the inner diameter of the connecting pipe 3.

[0050] By providing a receiving ring 12 below the clamping jaw 11, it is not necessary for the operator to hold the connecting pipe 3 manually before the clamping jaw 11 clamps the connecting pipe 3, reducing the workload. Moreover, the inner diameter of the inner ring of the receiving ring 12 is equal to the inner diameter of the connecting pipe 3, which not only ensures that the receiving ring 12 can smoothly clamp the connecting pipe 3 but also ensures that the inner ring of the receiving ring 12 will not obstruct the working area of the polishing assembly 21. The clamping unit 1 further includes a telescopic unit 13 for driving the clamping jaw 11 to move in the radial direction of the receiving ring 12 and a lifting unit 14 for driving the clamping jaw 11 to move in the vertical direction. Since both the telescopic unit 13 and the lifting unit 14 are prior arts, the specific structures of the telescopic unit 13 and the lifting unit 14 will not be described in detail here.

[0051] Working principle: The inner wall polishing unit 2 is always set in a vertical state. Before polishing, the connecting pipe 3 is clamped by the clamping unit 1. At this time, the connecting pipe 3 is in a vertical state, and the inner wall polishing unit 2 is located below the connecting pipe 3. Subsequently, the clamping unit 1 drives the connecting pipe 3 to move downward along the vertical direction. At the same time, the polishing assembly 21 starts to rotate, and the water spray head 22 located in the upper part of the polishing assembly 21 rotates synchronously with the polishing assembly 21, and at this time, the water spray head 22 starts to spray water. Since the water spray head 22 is located in the upper part of the polishing assembly 21, in the process of the clamping unit 1 driving the connecting pipe 3 to descend, the water spray head 22 enters the inside of the connecting pipe 3 from the lower part of the connecting pipe 3 prior to the polishing assembly 21. In this way, the water spray head 22 can pre-wet the inner wall of the connecting pipe 3. As the connecting pipe 3 continues to descend, the wetted inner wall of the connecting pipe 3 will pass through the polishing assembly 21, thus improving the wettability of the inner wall of the connecting pipe 3 and avoiding the situation of dry grinding during the polishing process of the polishing assembly 21. At the same time, during the process of the polishing assembly 21 polishing the inner wall of the connecting pipe 3, the water spray head 22 located in the upper part of the polishing assembly 21 is always in an operating state. The water flow sprayed by the water spray head 22 can completely cover the inner wall of the connecting pipe 3 in a circle. And under the action of gravity and the adsorption force of the water flow itself, the water flow flowing down along the vertical direction can carry away the remaining metal debris in the annular groove 31 when passing through the annular groove 31. When the polishing assembly 21 moves relative to the connecting pipe 3 to the upper end of the connecting pipe 3, the polishing of the connecting pipe 3 is completed. At this time, the polishing assembly 21 stops rotating, the water spray head 22 continues to spray water, the clamping unit 1 drives the polished connecting pipe 3 to rise along the vertical direction, and then the clamping unit 1 releases the connecting pipe 3, and the staff can remove the connecting pipe 3. In this way, the situation that a large amount of metal debris remains in the annular groove 31 after polishing can be avoided.

[0052] The above embodiments only represent one or several implementation manners of the present invention. The description is relatively specific and detailed, but it should not be construed as a limitation on the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several deformations and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A polishing device for a connecting pipe capable of embedding a rubber ring, comprising a clamping unit (1) and an inner wall polishing unit (2); It is characterized in that The clamping unit (1) clamps the connecting pipe (3) vertically, the inner wall polishing unit (2) and the inner wall of the connecting pipe (3) are slidably matched in the vertical direction, the inner wall polishing unit (2) comprises a water spray head (22) and a polishing assembly (21), the water spray head (22) and the polishing assembly (21) are arranged from top to bottom in the vertical direction, the inner wall polishing unit (2) moves into the connecting pipe (3) from bottom to top in the vertical direction when polishing the inner wall of the connecting pipe (3), the polishing assembly (21) has a rotation axis in the vertical direction when polishing the inner wall of the connecting pipe (3), the water spray head (22) rotates synchronously with the polishing assembly (21), and the water spraying direction of the water spray head (22) is always parallel to the radial direction of the connecting pipe (3).

2. The polishing device for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that: The water spray head (22) is a rotating body structure, and a plurality of water outlets are evenly arranged on the water spray head (22) around the axis of the water spray head (22). The water outlets spray water onto the inner wall of the connecting pipe (3) to form a wetted area, and the wetted areas formed on the inner wall of the connecting pipe (3) by two adjacent water outlets are in an intersecting state.

3. The polishing device for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that: The polishing assembly (21) comprises a polishing head (211) that extends out under the action of centrifugal force and contacts the inner wall of the connecting tube (3), and a resetting assembly that drives the polishing head (211) to retract after the centrifugal force is lost.

4. The polishing device for connecting pipes capable of embedding rubber rings according to claim 3, characterized in that: The reset assembly comprises a connecting arm (212) having one end fixedly connected to a polishing head (211); the polishing heads (211) are arranged in a ring array; a coil spring (213) is arranged in the ring formed by the polishing heads (211); a transmission assembly is arranged between the coil spring (213) and one end of the connecting arm (212) away from the polishing head (211); and the polishing head (211) rotates around the connection between the connecting arm (212) and the transmission assembly.

5. The polishing device for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that: A water storage shell (4) for receiving clean water is arranged on the periphery of the inner wall polishing unit (2), and the level of the clean water stored in the water storage shell (4) is lower than that of the polishing assembly (21).

6. The polishing device for connecting pipes capable of embedding rubber rings according to claim 5, characterized in that: A water supply pipe (23) is provided at the bottom of the water housing (4) and passes through the water housing (4) in the axial direction. The water supply pipe (23) passes through the center of the polishing assembly (21) in the vertical direction and is connected to the water spray head (22). A driving unit (24) is provided at the lower part of the water supply pipe (23) for driving the water supply pipe (23) to rotate around the axis of the water supply pipe (23).

7. The polishing device for connecting pipes capable of embedding rubber rings according to claim 6, characterized in that: A plurality of stirring members (231) for stirring the clean water in the water containing shell (4) are evenly arranged on the side wall of the water supply pipe (23) and around the water supply pipe (23).

8. The polishing device for connecting pipes capable of embedding rubber rings according to claim 6, characterized in that: A rotary connector (42) is provided at the bottom of the water supply pipe (23), a connecting pipe (41) is provided between the rotary connector (42) and the water storage shell (4), and a pump body (43) is provided on the connecting pipe (41).

9. The polishing device for connecting pipes capable of embedding rubber rings according to claim 8, characterized in that: An isolation plate (44) having an annular structure is arranged in the water housing (4), the isolation plate (44) dividing the water housing (4) from the inside to the outside into a first cavity and a second cavity, a filter plate (45) is arranged on the isolation plate (44) for connecting the first cavity and the second cavity, and a connection point between the connecting pipe (41) and the water housing (4) is located in the second cavity.

10. The polishing device for connecting pipes capable of embedding rubber rings according to claim 1, characterized in that: The clamping unit (1) comprises a clamping jaw (11) for clamping the connecting tube (3), and a receiving ring (12) for receiving the connecting tube (3) is arranged below the clamping jaw (11), and the inner ring diameter of the receiving ring (12) is equal to the inner ring diameter of the connecting tube (3).

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