Cast pipe fitting inner wall polishing device

Abstract

The invention provides a cast pipe fitting inner wall polishing device, and relates to the technical field of pipe inner wall polishing devices.The cast pipe fitting inner wall polishing device comprises a base, a rotating assembly is arranged at the top of the base, the rotating assembly comprises transverse frames, the transverse frames are fixed to the tops of the two ends of the base, and two mounting blocks are symmetrically mounted in each transverse frame in a sliding mode; compared with the prior art, through cooperation of the rotating assembly and the polishing assembly, the pipe body polishing device is used for polishing pipe bodies with different calibers, meanwhile, in the polishing process, the polishing efficiency is improved, and the polishing efficiency is improved. The inner wall of the pipe body is comprehensively and efficiently polished through rotation of the polishing column and autorotation of the pipe body, the polished position is detected through the detection assembly along with movement of the polishing column, the detection assembly stops when the detection assembly encounters a convex uneven position, the uneven position is conveniently and timely polished again, and the overall efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of pipe inner wall grinding devices, in particular to a casting pipe inner wall grinding device. Background Art

[0002] After casting, the inner wall of the casting pipe body needs to be polished to make the inner wall roughness meet the requirements. The existing casting pipe body inner wall polishing devices mostly have polishing blocks on both sides of the rotating shaft. The rotating shaft extends into the casting pipe body, and the motor drives the rotating shaft to rotate, so that the polishing blocks on both sides of the rotating shaft polish the inner wall of the casting pipe. Since the position of the polishing blocks is relatively fixed, it is impossible to polish casting pipe bodies of different diameters. At the same time, the polishing blocks themselves cannot rotate, the polishing effect is poor, and the polishing speed is slow.

[0003] In order to improve the grinding efficiency, in the prior art, the tube body is placed on rollers for rotation, so that the self-rotation of the tube body and the self-rotation of the grinding block are coordinated, and the inner wall of the tube body is efficiently and comprehensively ground. After the grinding is completed, it is usually necessary to check the flatness of the inner wall. In this process, manual inspection is rather cumbersome. In addition, if there are some protrusions that have not been completely ground, it is necessary to use the equipment again for re-grinding, which takes a lot of time and affects the overall grinding efficiency. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a device for grinding the inner wall of a cast pipe fitting to solve the problems raised in the above-mentioned background technology. The present invention has a novel structure and can be used for grinding pipes of different calibers through the cooperation of a rotating component and a grinding component. At the same time, during the grinding process, the rotation of the grinding column and the self-rotation of the pipe body comprehensively and efficiently grind the inner wall of the pipe body. As the grinding column moves, the detection component detects the polished position and stops when encountering a raised uneven position, which is convenient for timely re-grinding of the uneven position and improves the overall efficiency.

[0005] In order to achieve the above-mentioned purpose, the present invention is implemented through the following technical scheme: a device for grinding the inner wall of a casting pipe fitting, comprising a base, a rotating assembly is provided on the top of the base, the rotating assembly comprises a transverse frame, transverse frames are fixed on the top of both ends of the base, and two mounting blocks are symmetrically and slidably installed inside the transverse frame, rollers are rotatably installed between the mounting blocks in the same straight line through bearings, a pipe body is placed on the top of the two rollers, a driving motor is fixed on the outside of the mounting block at one end of the base, and the output end of the driving motor is fixedly connected to the roller, the base is provided with a grinding assembly on the outside of one end of the driving motor, and the grinding assembly comprises a driving shaft The drive shaft is provided with two, and a grinding column is fixed at one end of the drive shaft, and the grinding column is in sliding contact with the inner wall of the tube body. A mounting plate is rotatably mounted on the outer side of the mounting block corresponding to the position of the drive shaft through a hollow shaft ring, and the drive shaft passes through the upper end of the mounting plate, and the output end of the drive motor passes through the mounting plate and is connected with the roller. A detection component is provided on the surface of the drive shaft, and the detection component includes an arc block, and the arc block is located at the tail end of the grinding column. A gear ring is fixed on the back of the two arc blocks by screws, and the gear ring matches the inner wall of the tube body, and a gear is fixed on the surface of the drive shaft corresponding to the gear ring, and the gear is meshed with the gear ring.

[0006] Furthermore, two groups of cylinders are fixed on one side of the base, and a push plate is fixed on the extended end of the cylinder, and the push plate contacts the outer surface of the tube body. A delivery plate is fixed on the surface of two mounting blocks on the other side of the base, and the top of the delivery plate is flush with the roller.

[0007] Furthermore, the rotating assembly also includes a slide groove, a slide groove is opened on the top of the horizontal frame, and a first bidirectional screw is rotatably installed in the slide groove through a bearing, two sliders are symmetrically threaded on the surface of the first bidirectional screw, and the sliders slide along the slide groove.

[0008] Furthermore, the grinding assembly also includes a sliding frame. The tail end of the driving shaft is provided with a sliding frame. Two sliding plates are symmetrically slidingly connected inside the sliding frame, and the sliding plates are rotatably connected to the driving shaft through bearings.

[0009] Furthermore, a transmission belt is installed on the surface of the mounting plate, a pulley at one end of the transmission belt is fixedly sleeved on the output end of the driving motor, and a pulley at the other end of the transmission belt is sleeved on the driving shaft.

[0010] Furthermore, two convex strips are symmetrically fixed on the surface of the driving shaft, and a slot is provided at the center of the pulley connecting the transmission belt and the driving shaft, and the driving shaft and the convex strip slide through the slot.

[0011] Furthermore, an electric push rod is fixed on one side of the base facing the slide frame, and an extended end of the electric push rod passes through the base and is fixedly connected to the bottom of the slide frame.

[0012] Furthermore, the detection component also includes a ring groove, a sliding groove is opened on the surface of the gear ring, and the upper and lower ends of the sliding groove are slidably inserted into the long plate, and the outer end of the long plate passes through the tube body near the slide frame.

[0013] Furthermore, a mounting frame is fixed on the middle surface of the sliding frame, and a second bidirectional screw is rotatably mounted on the surface of the mounting frame via a bearing, and the two long plates are threadedly sleeved on the surface of the second bidirectional screw.

[0014] Furthermore, a locking bolt is threadedly inserted on the surface of the mounting plate, and the locking bolt can be pressed into contact with the mounting block, and a scale is arranged on the surface of the driving shaft.

[0015] Beneficial effects of the present invention:

[0016] 1. The present invention selects matching gear rings and arc blocks for installation according to the inner diameter size of the tube body. Here, multiple models of gear rings may need to be customized as backup, and each gear ring can be fixed and installed with the arc block by screws. The outer surface of the gear ring has an annular groove for installing a long plate. After the gear ring and the arc block are fixed, the gear is meshed and connected with the gear ring. One end of the long plate is inserted into the annular groove, and the other end is connected to the second bidirectional screw. The distance of the long plate can be adjusted by the second bidirectional screw for installing gear rings of other sizes.

[0017] 2. The present invention is fixedly connected to the sliding frame by a mounting frame. When the sliding frame moves, the mounting frame will move synchronously to achieve synchronization between the grinding assembly and the detection assembly. Due to the setting of the long plate and the ring groove, when two gears with the same direction are meshed with the gear ring for transmission, the gear ring drives the arc block to rotate along the inner wall of the tube body, and the long plate slides along the slide groove to maintain the connection with the gear ring. The detection range of the arc block covers the entire inner wall of the tube body.

[0018] 3. The present invention uses an electric push rod to push the sliding frame to move. When the polishing column is moved horizontally along the inner wall of the tube body for polishing, the driving shaft can move along the transmission belt and the mounting plate, and the transmission connection between the driving shaft and the driving motor is always maintained. Because the driving shaft is connected to the mounting plate, the distance between the polishing column and the roller is certain. When dealing with tubes with different inner diameters, the position of the roller can be adjusted, and the angle of the mounting plate can be rotated to adjust the polishing column to contact the inner wall of the tube body, and then the position of the polishing column can be fixed by the locking bolt.

[0019] 4. The present invention slides along the slide groove by cooperating with the first bidirectional screw rod to drive the mounting block to move along the inside of the horizontal frame. At this time, the slide plate at the tail end of the driving shaft will slide along the slide frame to keep the grinding column in contact with the inner wall of the tube body, and the roller in contact with the outer walls on both sides of the bottom of the tube body. The two sets of driving motors have the same direction of rotation, and the friction force of the two rollers drives the tube body to rotate.

[0020] 5. Compared with the prior art, the present invention can be used for grinding pipes of different calibers through the cooperation of the rotating component and the grinding component. At the same time, during the grinding process, the rotation of the grinding column and the self-rotation of the pipe body can comprehensively and efficiently grind the inner wall of the pipe body. As the grinding column moves, the detection component detects the polished position and stops when encountering a raised uneven position, so that the uneven position can be polished again in time, thereby improving the overall efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of a casting pipe inner wall grinding device of the present invention;

[0022] Figure 2 It is a schematic diagram of the structure of a rotating assembly of a casting pipe inner wall grinding device of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a grinding component of a casting pipe inner wall grinding device of the present invention;

[0024] Figure 4 It is a schematic diagram of the connection between the grinding component and the front end of the detection component of a casting pipe inner wall grinding device of the present invention;

[0025] Figure 5 It is a schematic diagram of the connection between the grinding component and the rear end of the detection component of a casting pipe inner wall grinding device of the present invention;

[0026] Figure 6 A schematic diagram of the connection between a drive shaft and a transmission belt of a casting pipe inner wall grinding device of the present invention;

[0027] Figure 7 It is a schematic diagram of the separation of the mounting plate and the mounting block of a casting pipe inner wall grinding device of the present invention;

[0028] Figure 8 The present invention is a schematic diagram of the structure of a detection component of a casting pipe inner wall grinding device.

[0029] In the figure: 1. base; 11. cylinder; 12. push plate; 2. tube body; 3. rotating assembly; 31. horizontal frame; 32. mounting block; 33. roller; 34. delivery plate; 35. slide groove; 36. first bidirectional screw; 37. slider; 38. drive motor; 4. grinding assembly; 41. grinding column; 42. drive shaft; 43. slide frame; 44. slide plate; 45. electric push rod; 46. mounting plate; 47. convex strip; 48. transmission belt; 49. locking bolt; 410. slot; 5. detection assembly; 51. arc block; 52. gear ring; 53. long plate; 54. mounting frame; 55. second bidirectional screw; 56. ring groove; 57. gear. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] See also Figures 1 to 8 The present invention provides a technical solution: a device for grinding the inner wall of a casting pipe fitting, comprising a base 1, a rotating assembly 3 is provided on the top of the base 1, the rotating assembly 3 comprises a transverse frame 31, transverse frames 31 are fixed on the top of both ends of the base 1, and two mounting blocks 32 are symmetrically and slidably installed inside the transverse frame 31, rollers 33 are rotatably installed between the mounting blocks 32 in the same straight line through bearings, a pipe body 2 is placed on the top of the two rollers 33, a driving motor 38 is fixed on the outer side of the mounting block 32 at one end of the base 1, and the output end of the driving motor 38 is fixedly connected to the rollers 33, a grinding assembly 4 is provided on the outer side of the base 1 at one end of the driving motor 38, the grinding assembly 4 comprises a driving shaft 42, two driving shafts 42 are provided, and a grinding column 41 is fixed at one end of the driving shaft 42, the grinding column 41 is in sliding contact with the inner wall of the pipe body 2, a mounting plate 46 is rotatably installed on the outer side of the mounting block 32 corresponding to the position of the driving shaft 42 through a hollow shaft ring, and the driving shaft 42 passes through the upper end of the mounting plate 46, the The output end of the driving motor 38 is connected to the roller 33 through the mounting plate 46. A detection assembly 5 is provided on the surface of the driving shaft 42. The detection assembly 5 includes an arc block 51. The arc block 51 is located at the rear end of the grinding column 41. A gear ring 52 is fixed to the back of the two arc blocks 51 by screws, and the gear ring 52 matches the inner wall of the tube body 2. A gear 57 is fixed to the position corresponding to the gear ring 52 on the surface of the driving shaft 42, and the gear 57 is meshed with the gear ring 52. When the device is used, according to the caliber of the tube body 2 , adjust the sizes of the rotating component 3 and the grinding component 4, and after placing the tube body 2 on the rotating component 3, the two rollers 33 contact the two sides of the bottom of the tube body 2, and the grinding column 41 contacts the inner walls on both sides of the tube body 2. The grinding column 41 performs push-type grinding on the inner wall of the tube body 2. At the same time, the tube body 2 rotates itself to cover the entire inner wall with the grinding range. The detection component 5 detects the path of the grinding process. When there is a raised and uneven position, the grinding component 4 can be used to resume work in time, saving inspection time and improving processing efficiency.

[0032] In this embodiment, two groups of cylinders 11 are fixed on one side of the base 1, and a push plate 12 is fixed to the extended end of the cylinder 11, and the push plate 12 is in contact with the outer surface of the tube body 2. A delivery plate 34 is fixed on the surface of two mounting blocks 32 on the other side of the base 1, and the top of the delivery plate 34 is flush with the roller 33. After the grinding is completed, the extended end of the cylinder 11 drives the push plate 12 to move, pushes the tube body 2 out of the roller 33, and sends it out from the delivery plate 34.

[0033] In this embodiment, the rotating assembly 3 also includes a slide groove 35, a slide groove 35 is opened on the top of the cross frame 31, and a first bidirectional screw 36 is rotatably installed in the slide groove 35 through a bearing, and two sliders 37 are symmetrically threaded on the surface of the first bidirectional screw 36, and the slider 37 slides along the slide groove 35. The grinding assembly 4 also includes a slide frame 43, and the tail end of the driving shaft 42 is provided with a slide frame 43. Two slide plates 44 are symmetrically slidably connected inside the slide frame 43, and the slide plate 44 is rotatably connected to the driving shaft 42 through a bearing. The first bidirectional screw 36 can be driven by a motor, and the slider 37 cooperates with the first bidirectional screw 36 to slide along the slide groove 35, driving the mounting block 32 to move along the inside of the cross frame 31. At this time, the slide plate 44 at the tail end of the driving shaft 42 will slide along the slide frame 43 to keep the grinding column 41 in contact with the inner wall of the tube body 2, and the roller 33 is in contact with the outer walls on both sides of the bottom of the tube body 2. The two sets of driving motors 38 have the same direction of rotation, and the friction force of the two rollers 33 drives the tube body 2 to rotate itself.

[0034] In this embodiment, a transmission belt 48 is installed on the surface of the mounting plate 46, and a pulley at one end of the transmission belt 48 is fixedly sleeved on the output end of the drive motor 38, and a pulley at the other end of the transmission belt 48 is sleeved on the drive shaft 42. Two convex strips 47 are symmetrically fixed on the surface of the drive shaft 42, and a slot 410 is provided at the center of the pulley connecting the transmission belt 48 and the drive shaft 42. The drive shaft 42 and the convex strip 47 slide through the slot 410, and an electric push rod 45 is fixed on the side of the base 1 facing the slide frame 43, and the extended end of the electric push rod 45 passes through The base 1 is fixedly connected to the bottom of the slide frame 43, and a locking bolt 49 is threadedly inserted on the surface of the mounting plate 46, and the locking bolt 49 can be squeezed and contacted with the mounting block 32. A scale is set on the surface of the driving shaft 42, and there is a scale on the driving shaft 42. Here, a value is determined for the distance between the arc block 51 and the grinding column 41. After detecting the position with the protrusion, the grinding component 4 and the detection component 5 move outward. At this time, the distance moved by the grinding column 41 can be observed according to the scale on the driving shaft 42, thereby replacing the original position of the arc block 51, which also has a protrusion. The position of the tube body 2 is convenient for accurately correcting and grinding the uneven area of ​​the inner wall of the tube body 2. The drive shaft 42 passes through the transmission belt 48 and the mounting plate 46. The mounting plate 46 has two through holes at the top and bottom. The upper through hole is for the drive shaft 42 to pass through, and the lower through hole is for the output end of the drive motor 38 to connect with the roller 33. Because the slot 410 of the drive belt 48 pulley is engaged with the convex strip 47, the output end of the drive motor 38 drives the drive belt 48 to rotate, which can transfer kinetic energy to the drive shaft 42. And because the drive belt 48 pulley is slidably connected to the drive shaft 42, the electric push rod 45 pushes When the movable sliding frame 43 moves and the grinding column 41 is moved horizontally along the inner wall of the tube body 2 for grinding, the driving shaft 42 can move along the transmission belt 48 and the mounting plate 46, and the transmission connection between the driving shaft 42 and the driving motor 38 is always maintained. Because the driving shaft 42 is connected to the mounting plate 46, the distance between the grinding column 41 and the roller 33 is certain. When dealing with tube bodies 2 with different inner diameters, the grinding column 41 can be adjusted to contact the inner wall of the tube body 2 by adjusting the position of the roller 33 and rotating the angle of the mounting plate 46, and then the position of the grinding column 41 is fixed by the locking bolt 49.

[0035] In this embodiment, the detection component 5 also includes an annular groove 56, a slide groove 35 is opened on the surface of the gear ring 52, and the upper and lower ends of the slide groove 35 are slidably inserted in the long plate 53, and the outer end of the long plate 53 passes through the position of the tube body 2 close to the slide frame 43, and a mounting frame 54 is fixed on the middle surface of the slide frame 43, and a second bidirectional screw 55 is rotatably installed on the surface of the mounting frame 54 through a bearing, and the two long plates 53 are threadedly sleeved on the surface of the second bidirectional screw 55. After the tube body 2 is placed on the roller 33, the matching gear ring 52 and arc block 51 are selected for installation according to the inner diameter size of the tube body 2. Here, it is necessary to customize multiple models of gear rings 52 as spares, and each gear ring 52 can be fixedly installed with screws and arc blocks 51. The outer surface of the gear ring 52 has an annular groove 56 , used to install the long plate 53, after the gear ring 52 is fixed to the arc block 51, the gear 57 is meshed with the gear ring 52, one end of the long plate 53 is inserted into the annular groove 56, and the other end is connected to the second bidirectional screw 55. The distance of the long plate 53 can be adjusted by the second bidirectional screw 55, which is used to install gear rings 52 of other sizes. The mounting frame 54 is fixedly connected to the slide frame 43. When the slide frame 43 moves, the mounting frame 54 will move synchronously to achieve synchronization between the grinding component 4 and the detection component 5. Because of the setting of the long plate 53 and the annular groove 56, when two gears 57 with the same direction are meshed with the gear ring 52 for transmission, the gear ring 52 drives the arc block 51 to rotate along the inner wall of the tube body 2, and the long plate 53 slides along the slide groove 35 to maintain the connection with the gear ring 52. The detection range of the arc block 51 covers the entire inner wall of the tube body 2.

[0036] When the device is used, according to the caliber of the tube body 2, the first bidirectional screw 36 can be driven by a motor, and the slider 37 cooperates with the first bidirectional screw 36 to slide along the slide groove 35, driving the mounting block 32 to move along the inside of the horizontal frame 31. At this time, the slide plate 44 at the tail end of the driving shaft 42 will slide along the slide frame 43 to keep the grinding column 41 in contact with the inner wall of the tube body 2, and the roller 33 in contact with the outer walls on both sides of the bottom of the tube body 2. The two sets of driving motors 38 have the same direction of rotation, and the friction force of the two rollers 33 drives the tube body 2 to rotate itself. There is a scale on the driving shaft 42, where a value is determined for the distance between the arc block 51 and the grinding column 41. After detecting the position with the protrusion, the grinding component 4 and the detection component 5 move outward. At this time, the grinding can be observed according to the scale on the driving shaft 42. The grinding column 41 moves a distance, thereby replacing the position of the original arc block 51, which is also a raised position, so as to facilitate the accurate correction and grinding of the uneven area on the inner wall of the tube body 2. The driving shaft 42 passes through the transmission belt 48 and the mounting plate 46. The mounting plate 46 has two through holes above and below. The upper through hole is for the driving shaft 42 to pass through, and the lower through hole is for the output end of the driving motor 38 to connect with the roller 33. Because the slot 410 of the transmission belt 48 pulley is engaged with the convex strip 47, the output end of the driving motor 38 drives the transmission belt 48 to rotate, which can transfer kinetic energy to the driving shaft 42. And because the transmission belt 48 pulley is slidably connected to the driving shaft 42, the electric push rod 45 pushes the sliding frame 43 to move, and when the grinding column 41 is moved horizontally along the inner wall of the tube body 2 for grinding, the driving shaft 42 can move along the transmission belt 48 and the mounting plate 46, and always maintain the transmission connection between the drive shaft 42 and the drive motor 38. Because the mounting plate 46 is connected to the drive shaft 42, the distance between the grinding column 41 and the roller 33 is certain. When dealing with tubes 2 with different inner diameters, the grinding column 41 can be adjusted to contact the inner wall of the tube 2 by adjusting the position of the roller 33 and rotating the angle of the mounting plate 46. Then, the position of the grinding column 41 is fixed by the locking bolt 49. After the tube 2 is placed on the roller 33, the corresponding gear ring 52 and arc block 51 are selected for installation according to the inner diameter size of the tube 2. Here, multiple models of gear rings 52 may be customized as spares, and each gear ring 52 may be fixed and installed with screws and arc block 51. 2 has an annular groove 56 on its outer surface for mounting the long plate 53. After the gear ring 52 is fixed to the arc block 51, the gear 57 is meshed with the gear ring 52. One end of the long plate 53 is inserted into the annular groove 56, and the other end is connected to the second bidirectional screw 55. The distance of the long plate 53 can be adjusted by the second bidirectional screw 55 for mounting gear rings 52 of other sizes. The mounting frame 54 is fixedly connected to the slide frame 43. When the slide frame 43 moves, the mounting frame 54 will move synchronously to achieve synchronization between the grinding component 4 and the detection component 5. Because of the setting of the long plate 53 and the annular groove 56, when two gears 57 with the same direction are meshed with the gear ring 52 for transmission, the gear ring 52 drives the arc block 51 to rotate along the inner wall of the tube body 2, and the long plate 53 slides along the slide groove 35 to maintain the connection with the gear ring 52.The detection range of the arc block 51 covers the entire inner wall of the tube body 2, saving inspection time and improving processing efficiency. After the grinding is completed, the extended end of the cylinder 11 drives the push plate 12 to move, push the tube body 2 out of the roller 33, and send it out from the delivery plate 34.

[0037] The basic principles and main features of the present invention and the advantages of the present invention are shown and described above. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A casting pipe inner wall grinding device, comprising a base (1), characterized in that: A rotating assembly (3) is provided on the top of the base (1), and the rotating assembly (3) includes a transverse frame (31). Transverse frames (31) are fixed on the top of both ends of the base (1), and two mounting blocks (32) are symmetrically and slidably mounted inside the transverse frame (31). A roller (33) is rotatably mounted between the mounting blocks (32) on the same straight line through a bearing, and a tube (2) is placed on the top of the two rollers (33). A driving motor (38) is fixed on the outside of the mounting block (32) at one end of the base (1), and the output end of the driving motor (38) is fixedly connected to the roller (33). A grinding assembly (4) is provided on the outside of one end of the driving motor (38) of the base (1), and the grinding assembly (4) includes a driving shaft (42). Two driving shafts (42) are provided, and a grinding column (41) is fixed on one end of the driving shaft (42). The grinding column (41) is in sliding contact with the inner wall of the tube body (2); a mounting plate (46) is rotatably mounted on the outer side of the mounting block (32) at a position corresponding to the driving shaft (42) through a hollow shaft ring, and the driving shaft (42) passes through the upper end of the mounting plate (46); the output end of the driving motor (38) passes through the mounting plate (46) and is connected to the roller (33); a detection component (5) is provided on the surface of the driving shaft (42); the detection component (5) includes an arc block (51); the arc block (51) is located at the rear end of the grinding column (41); a toothed ring (52) is fixed on the back of the two arc blocks (51) by screws, and the toothed ring (52) matches the inner wall of the tube body (2); a gear (57) is fixed on the surface of the driving shaft (42) at a position corresponding to the toothed ring (52), and the gear (57) is meshed with the toothed ring (52).

2. A casting pipe inner wall grinding device according to claim 1, characterized in that: Two groups of cylinders (11) are fixed on one side of the base (1), and a push plate (12) is fixed on the extended end of the cylinder (11), and the push plate (12) is in contact with the outer surface of the tube body (2). A delivery plate (34) is fixed on the surface of two mounting blocks (32) on the other side of the base (1), and the top of the delivery plate (34) is flush with the roller (33).

3. The inner wall grinding device of a casting pipe according to claim 1, characterized in that: The rotating assembly (3) further comprises a slide groove (35), the top of the transverse frame (31) is provided with the slide groove (35), and a first bidirectional screw rod (36) is rotatably mounted in the slide groove (35) via a bearing, and two sliders (37) are symmetrically threadedly sleeved on the surface of the first bidirectional screw rod (36), and the sliders (37) slide along the slide groove (35).

4. The inner wall grinding device of a casting pipe according to claim 1, characterized in that: The grinding assembly (4) further comprises a sliding frame (43), the tail end of the driving shaft (42) is provided with the sliding frame (43), two sliding plates (44) are symmetrically slidably connected inside the sliding frame (43), and the sliding plates (44) are rotatably connected to the driving shaft (42) via bearings.

5. A casting pipe inner wall grinding device according to claim 4, characterized in that: A transmission belt (48) is installed on the surface of the mounting plate (46), a pulley at one end of the transmission belt (48) is fixedly sleeved on the output end of the drive motor (38), and a pulley at the other end of the transmission belt (48) is sleeved on the drive shaft (42).

6. A casting pipe inner wall grinding device according to claim 5, characterized in that: Two convex strips (47) are symmetrically fixed on the surface of the driving shaft (42); a slot (410) is provided at the center of the pulley connecting the transmission belt (48) and the driving shaft (42); the driving shaft (42) and the convex strips (47) slide through the slot (410).

7. A casting pipe inner wall grinding device according to claim 6, characterized in that: An electric push rod (45) is fixed to one side of the base (1) facing the slide frame (43), and an extended end of the electric push rod (45) passes through the base (1) and is fixedly connected to the bottom of the slide frame (43).

8. The inner wall grinding device of a casting pipe according to claim 7, characterized in that: The detection assembly (5) further comprises an annular groove (56), a sliding groove (35) is provided on the surface of the gear ring (52), and the upper and lower ends of the sliding groove (35) are slidably inserted into the long plate (53), and the outer end of the long plate (53) passes through the tube body (2) close to the sliding frame (43).

9. A casting pipe inner wall grinding device according to claim 8, characterized in that: A mounting frame (54) is fixed on the middle surface of the sliding frame (43), and a second bidirectional screw (55) is rotatably mounted on the surface of the mounting frame (54) via a bearing, and the two long plates (53) are threadedly sleeved on the surface of the second bidirectional screw (55).

10. The inner wall grinding device of a casting pipe according to claim 5, characterized in that: A locking bolt (49) is threadedly inserted on the surface of the mounting plate (46), and the locking bolt (49) can be pressed into contact with the mounting block (32). A scale is arranged on the surface of the driving shaft (42).

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