A rotary internal polishing machine

Abstract

A rotary inner polishing machine comprises a frame, a rotating table rotatably connected to the frame, a polishing assembly for polishing the inner bottom wall of a thermos cup, and three polishing structures fixed to the frame for polishing the inner side wall of the thermos cup. The invention realizes all-round automatic polishing of the thermos cup, uniform polishing, and high working efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of polishing, in particular to a rotary internal polishing machine. Background Art

[0002] During the production process of thermos bottles, the inner wall of the thermos needs to be polished. Currently, most of the polishing of the inner wall is done manually. During polishing, the uniformity of the polishing cannot be controlled manually, which affects the performance of the product. In addition, the polishing process of the thermos inner wall is usually carried out by rough polishing, then fine polishing, and finally fine polishing. During this process, the polishing pad needs to be replaced midway to achieve different polishing effects, which affects work efficiency and is time-consuming and labor-intensive.

[0003] The present invention proposes a technical solution to solve the problem that when polishing the inner cavity of a cylindrical workpiece, it is difficult to manually control the uniformity of the polishing of the inner cavity of the cylindrical workpiece and the frequent replacement of polishing pads leads to low work efficiency. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the present invention provides a rotary internal polishing machine.

[0005] A rotary internal polishing machine comprises a frame, a rotating table rotatably connected to the frame, and three polishing structures fixed to the frame;

[0006] The rotary table includes a first rotary table, a first driving structure, a second rotary table, a plurality of fixed sleeves and a plurality of second driving structures, the first rotary table is located at the top of the frame and is rotatably connected to the frame, the second rotary table is located in the frame, and a plurality of fixed rods are fixedly connected between the second rotary table and the first rotary table. The first driving structure includes a first motor and a cam divider, the first motor is installed in the frame, the output shaft of the first motor is fixedly connected to the first driving wheel, the input end of the cam divider is fixedly connected to the first driven wheel, the first driven wheel and the first driving wheel are connected by a belt transmission, the output end of the cam divider is fixedly connected to the second rotary table, and the plurality of fixed sleeves are distributed in an array and rotate. The gear train is connected to the first rotating disk and the gear train is connected to the first rotating disk by a gear. The gear train is connected to the first rotating disk by a gear. The gear train is connected to the first rotating disk by a gear. The gear train is connected to the first rotating disk by a gear. The gear train is connected to the first rotating disk by a gear.

[0007] The positions of the three polishing structures correspond to three adjacent fixed sleeves one by one. The polishing structure includes a bracket, a third motor, a sliding block and a rotating rod. The bracket is longitudinally arranged and fixed to the top of the frame, and a fourth motor is installed at the top of the bracket, and a first screw rod is fixed to the output shaft of the fourth motor, and the first screw rod is rotatably connected to the bottom end of the bracket, and the outer sleeve of the first screw rod is provided with a first nut seat. The bracket is also provided with two first slide rails respectively located on both sides of the first screw rod, and the two first slide rails are arranged parallel to the first screw rod, and the two ends of the first nut seat are slidably sleeved on the outside of the two first slide rails, the sliding block is fixedly connected to the first nut seat, the third motor is installed at the top of the sliding block, and the output shaft of the third motor passes through the sliding block and is fixedly connected to the rotating rod, and a grinding wheel is installed at the bottom end of the rotating rod, and the grinding wheel corresponds to the position of the fixed sleeve. The grinding wheels on the three polishing structures are respectively a coarse polishing grinding wheel, a fine polishing grinding wheel and a fine polishing grinding wheel along the rotation direction of the first turntable.

[0008] Preferably, a horizontally arranged sliding seat is fixed on the first nut seat, a fifth motor is installed at one end of the sliding seat, a second screw rod is fixed on the output shaft of the fifth motor, the other end of the second screw rod is rotatably connected to the other end of the sliding seat, a second nut seat is sleeved on the outside of the second screw rod, a sliding plate is fixed on the second nut seat, and two second slide rails are also provided in the sliding seat, which are respectively located on both sides of the second screw rod, and the two second slide rails are arranged parallel to the second screw rod, and a sliding sleeve for being sleeved on the second slide rail and moving along the second slide rail is fixed on the sliding plate, and the sliding block is fixedly connected to the sliding plate.

[0009] Preferably, a connecting rod is slidably connected to the sliding block, and the connecting rod extends along the direction of the rotating rod. A cover body is fixed to the bottom of the connecting rod and is sleeved on the outside of the grinding wheel. A connecting pipe is provided at the top of the cover body, and the connecting pipe is connected to the external dust suction device through a pipe.

[0010] Preferably, a dustproof folding tube is fixedly connected between the cover body and the sliding block.

[0011] Preferably, the frame is further provided with a polishing assembly for polishing the inner bottom wall of the thermos cup, and the positions of the polishing assembly and the three polishing structures correspond one-to-one to the four adjacent fixed sleeves respectively. The polishing assembly includes a first base, a second base, a mounting plate and a silicone grinding head. The first base is longitudinally arranged at the top of the frame, and a sixth motor is installed at the top of the first base. A third screw rod is fixed on the output shaft of the sixth motor, and the bottom end of the third screw rod is rotatably connected to the bottom end of the first base. The outer sleeve of the third screw rod is provided with a third nut seat, and two nuts are further provided in the first base, which are respectively located on both sides of the third screw rod. The second end of the second cam is connected to the. second end of the second cam, and the third end of the second cam is connected to the. third end of the second cam. The driving mechanism of the second cam is connected to the control frame, and the control frame is connected to the control frame by a belt drive mechanism. The outer sleeve is provided with a fourth nut seat, and two fourth slide rails are further provided in the second base, which are respectively located on both sides of the fourth screw rod. The two fourth slide rails are arranged parallel to the fourth screw rod, and the two ends of the fourth nut seat are respectively slidably sleeved on the outside of the two fourth slide rails. The mounting plate is fixedly connected to the fourth nut seat, and the top end of the mounting plate is rotatably connected to the sand belt loading disc and the sand belt receiving disc. The top end of the mounting plate is also provided with a sand belt receiving motor for driving the sand belt receiving disc to rotate. The silicone grinding head is installed at the bottom end of the mounting plate, and a tensioning wheel and a tensioning part are provided in the middle position of the mounting plate. The tensioning part includes a frame, an active roller and a driven roller, the frame is fixedly mounted on the mounting plate, the active roller and the driven roller are both rotatably connected to the frame, the active roller is fixedly connected with a rotating rod passing through the frame, the mounting plate is also provided with a sand belt feeding cylinder, the piston rod of the sand belt feeding cylinder is rotatably connected to the rotating rod, the mounting plate is also provided with a sand belt clamping cylinder and a top block, a pressure block is fixed on the piston rod of the sand belt clamping cylinder, the sand belt loading disc is equipped with a sand belt, one end of the sand belt passes around the tensioning wheel, passes through between the pressure block and the top block, passes around the silicone grinding head, and passes through the gap between the active roller and the driven roller, and is fixedly connected to the sand belt receiving disc.

[0012] Preferably, a sanding belt tightening cylinder is further provided on the mounting plate, and a tightening wheel is rotatably connected to the piston rod of the sanding belt tightening cylinder.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] A rotary internal polishing machine, as the first turntable rotates, the thermos cup enters the polishing structure equipped with different grinding wheels in sequence. The polishing structure automatically polishes the cup wall of the thermos cup, and a polishing component is provided to polish the inner wall of the cup bottom of the thermos cup, thereby realizing all-round automatic polishing of the thermos cup, uniform polishing, and high work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a rotary internal polishing machine of the present invention. Figure 1 ;

[0016] Figure 2 This is a schematic diagram of the structure of a rotary internal polishing machine of the present invention. Figure 2 ;

[0017] Figure 3 This is a schematic diagram of the structure of a rotary internal polishing machine of the present invention. Figure 3 ;

[0018] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0019] Figure 5 It is a structural schematic diagram of a polishing structure of a rotary internal polishing machine of the present invention;

[0020] Figure 6 for Figure 5 Enlarged view of point B in the middle;

[0021] Figure 7 This is a schematic structural diagram of a polishing assembly of a rotary internal polishing machine of the present invention;

[0022] Figure 8 for Figure 7 Enlarged view of point C in the middle.

[0023] Figure numerals: 1, frame; 2, rotating table; 3, polishing structure; 4, first turntable; 5, second turntable; 6, fixed sleeve; 7, fixed rod; 8, first motor; 9, cam divider; 10, first driving wheel; 11, first driven wheel; 12, mounting frame; 13, second motor; 14, rotating shaft; 15, second driving wheel; 16, second driven wheel; 17, bracket; 18, third motor; 19, sliding block; 20, rotating rod; 21, fourth motor; 22, first screw rod; 23, first nut seat; 24, first slide rail; 25, grinding wheel; 26, sliding seat; 27, fifth motor; 28, second screw rod; 29, second nut seat; 30, sliding plate; 31 , second slide rail; 32, sliding sleeve; 33, connecting rod; 34, cover body; 35, connecting pipe; 36, dustproof folding pipe; 37, polishing assembly; 38, first base; 39, second base; 40, mounting plate; 41, silicone grinding head; 42, sixth motor; 43, seventh motor; 44, third driving wheel; 45, third driven wheel; 46, sand belt loading disc; 47, sand belt collection disc; 48, sand belt collection motor; 49, tensioning wheel; 50, tensioning part; 51, frame; 52, driving roller; 53, driven roller; 54, rotating rod; 55, sand belt feeding cylinder; 56, sand belt clamping cylinder; 57, top block; 58, pressure block; 59, sand belt tightening cylinder; 60, tightening wheel. DETAILED DESCRIPTION

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] A rotary internal polishing machine, such as Figures 1-8 As shown, it includes a frame 1, a rotating table 2 rotatably connected to the frame 1, a polishing assembly 37 for polishing the inner bottom wall of the thermos cup, and three polishing structures 3 fixed to the frame 1 for polishing the inner side walls of the thermos cup;

[0026] The rotating table 2 includes a first turntable 4, a first driving structure, a second turntable 5, five fixed sleeves 6 and five second driving structures. The first turntable 4 is located at the top of the frame 1 and is rotatably connected to the frame 1. The second turntable 5 is located in the frame 1. Several fixed rods 7 are fixedly connected between the second turntable 5 and the first turntable 4. The first driving structure includes a first motor 8 and a cam divider 9. The first motor 8 is installed in the frame 1. The output shaft of the first motor 8 is fixedly connected to the first driving wheel 10. The input end of the cam divider 9 is fixedly connected to the first driven wheel 11. The first driven wheel 11 is connected to the first driving wheel 10 through a belt drive. The output end of the cam divider 9 is fixedly connected to the second turntable 5. Several fixed sleeves 6 rotate in an array distribution. Connected to the top of the second turntable 5, the top of the fixed sleeve 6 passes through the first turntable 4 and is rotatably connected to the first turntable 4, the inner side wall of the fixed sleeve 6 is adhered with an annular rubber sleeve, and the annular rubber sleeve is interference fit with the thermos cup. The positions of the several second driving structures correspond one to one with the several fixed sleeves 6 respectively. The second driving structure includes a mounting frame 12, a second motor 13 and a rotating shaft 14. The mounting frame 12 is mounted on the bottom end of the second turntable 5, and the second motor 13 is fixedly mounted on the mounting frame 12. The output shaft of the second motor 13 is fixedly connected to the second driving wheel 15. The top of the rotating shaft 14 is fixedly connected to the fixed sleeve 6, and the bottom end of the rotating shaft 14 is fixed with a second driven wheel 16. The second driven wheel 16 and the second driving wheel 15 are connected by a belt drive;

[0027] The positions of the polishing assembly 37 and the three polishing structures 3 correspond to the four adjacent fixed sleeves 6. The polishing structure 3 includes a bracket 17, a third motor 18, a sliding block 19 and a rotating rod 20. The bracket 17 is longitudinally arranged and fixed to the top of the frame 1. The top of the bracket 17 is installed with a fourth motor 21. The first screw rod 22 is fixed on the output shaft of the fourth motor 21. The bottom end of the first screw rod 22 is rotatably connected to the bottom end of the bracket 17. The outer sleeve of the first screw rod 22 is provided with a first nut seat 23. Two first slide rails 24 are also provided in the bracket 17, which are respectively located on both sides of the first screw rod 22. The two first slide rails 24 are arranged parallel to the first screw rod 22. The two ends of the first nut seat 23 are respectively slidably sleeved on the outside of the two first slide rails 24. A horizontally arranged sliding seat 26 is fixed on the first nut seat 23. A fifth motor 27 is installed at one end of the sliding seat 26. A second screw rod 28 is fixed on the output shaft of the fifth motor 27. The other end of the second screw rod 28 The second nut seat 29 is provided on the outer side of the second screw rod 28, and a sliding plate 30 is fixed on the second nut seat 29. Two second slide rails 31 are also provided in the sliding seat 26, which are respectively located on both sides of the second screw rod 28. The two second slide rails 31 are arranged parallel to the second screw rod 28. A sliding sleeve 32 is fixed on the sliding plate 30 for being sleeved on the second slide rail 31 and moving along the second slide rail 31. The sliding block 19 is fixedly connected to the sliding plate 30. The third motor 18 is installed at the top of the sliding block 19. The output shaft of the third motor 18 passes through the sliding block 19 and is fixedly connected to the rotating rod 20. The bottom end of the rotating rod 20 is installed with a grinding wheel 25. The grinding wheel 25 corresponds to the position of the fixed sleeve 6. The grinding wheels 25 on the three polishing structures 3 are respectively a coarse polishing grinding wheel, a fine polishing grinding wheel and a fine polishing grinding wheel along the rotation direction of the first turntable 4.

[0028] The polishing assembly 37 includes a first base 38, a second base 39, a mounting plate 40 and a silicone grinding head 41. The first base 38 is longitudinally arranged at the top of the frame 1. A sixth motor 42 is installed at the top of the first base 38. A third screw is fixed to the output shaft of the sixth motor 42. The bottom end of the third screw is rotatably connected to the bottom end of the first base 38. A third nut seat is sleeved on the outside of the third screw. Two third slide rails are also provided in the first base 38, which are respectively located on both sides of the third screw. The two third slide rails are arranged parallel to the third screw. The two ends of the third nut seat are respectively slidably sleeved on the outside of the two third slide rails. The second base 3 9 is fixedly connected to the third nut seat and is perpendicular to the first base 38. A seventh motor 43 is installed at one end of the second base 39. A third driving wheel 44 is fixed on the output shaft of the seventh motor 43. A fourth screw rod is provided in the second base 39. A third driven wheel 45 is fixed to one end of the fourth screw rod. The third driven wheel 45 is connected to the third driving wheel 44 through a belt transmission. The other end of the fourth screw rod is rotatably connected to the other end of the second base 39. A fourth nut seat is provided on the outer sleeve of the fourth screw rod. Two fourth slide rails are also provided in the second base 39, which are respectively located on both sides of the fourth screw rod. The two fourth slide rails are connected to the fourth screw rod. The rods are arranged in parallel, and the two ends of the fourth nut seat are respectively slidably sleeved on the outside of the two fourth slide rails. The mounting plate 40 is fixedly connected to the fourth nut seat. The top of the mounting plate 40 is rotatably connected with the sanding belt disc 46 and the sanding belt disc 47. The top of the mounting plate 40 is also provided with a sanding belt motor 48 for driving the sanding belt disc 47 to rotate. The silicone grinding head 41 is installed at the bottom end of the mounting plate 40. The middle position of the mounting plate 40 is provided with a tensioning wheel 49 and a tensioning part 50. The tensioning part 50 includes a frame 51, an active roller 52 and a driven roller 53. The frame 51 is fixedly mounted on the mounting plate 40. The active roller 52 and the driven roller 53 They are all rotatably connected within the frame 51. The active roller 52 is fixedly connected to a rotating rod 54 that passes through the frame 51. The mounting plate 40 is also provided with a sanding belt feeding cylinder 55. The piston rod of the sanding belt feeding cylinder 55 is rotatably connected to the rotating rod 54. The mounting plate 40 is also provided with a sanding belt clamping cylinder 56 and a top block 57. The piston rod of the sanding belt clamping cylinder 56 is fixed to a pressure block 58. The sanding belt loading disk 46 is equipped with a sanding belt. One end of the sanding belt passes through the tensioning wheel 49, passes between the pressure block 58 and the top block 57, passes through the silicone grinding head 41, and passes through the gap between the active roller 52 and the driven roller 53, and is fixedly connected to the sanding belt receiving disk 47. The mounting plate 40 is also provided with a sanding belt tightening cylinder 59. The piston rod of the sanding belt tightening cylinder 59 is rotatably connected to a tightening wheel 60.

[0029] Additionally, a connecting rod 33 is slidably connected to the sliding block 19. The connecting rod 33 extends in the direction of the rotating rod 20. A cover 34 is fixed to the bottom of the connecting rod 33, which is mounted outside the grinding wheel 25. A connecting pipe 35 is provided at the top of the cover 34. The connecting pipe 35 is connected to an external dust collection device via a pipe. A dustproof folding pipe 36 is fixedly connected between the cover 34 and the sliding block 19.

[0030] Working principle: Before work, no thermos cup is placed in the five fixing sleeves 6, one fixing sleeve 6 is located in front of the staff, and the other four fixing sleeves 6 correspond to the positions of three polishing structures 3 and one polishing assembly 37 respectively.

[0031] The abrasive belt is installed in the abrasive belt loading disc 46. One end of the abrasive belt first passes over the tensioning wheel 49, then through the gap between the pressure block 58 and the top block 57, then around the tensioning wheel 60, then around the silicone grinding head 41, and finally through the gap between the active roller 52 and the driven roller 53, finally being fixedly connected to the abrasive belt receiving disc 47. Next, the abrasive belt clamping cylinder 56 is activated. The piston rod of the abrasive belt clamping cylinder 56 drives the pressure block 58 toward the top block 57, clamping the abrasive belt between them and preventing the abrasive belt from moving due to force during the polishing process. The abrasive belt tensioning cylinder 59 is then activated. The piston rod of the abrasive belt tensioning cylinder 59 extends, causing the tensioning wheel 60 on it to tighten the abrasive belt, thereby increasing the force required to tension the abrasive belt.

[0032] The staff member inserts the thermos cup into the fixed sleeve 6 in front of him. The thermos cup is fixed in the fixed sleeve 6 by means of an interference fit with the annular rubber sleeve inside the thermos cup. Then the first motor 8 is started. The output shaft of the first motor 8 rotates to drive the first driving wheel 10 fixedly connected to it to rotate. The first driving wheel 10 drives the first driven wheel 11 connected to it by a belt drive to rotate, thereby driving the first turntable 4 to rotate through the cam divider 9. The first turntable 4 is fixedly connected to the second turntable 5 through the fixed rod 7, so that the second turntable 5 rotates with the first turntable 4. When the fixed sleeve 6 with the thermos cup rotates to the position where the polishing structure 3 with the rough polishing wheel is installed is located, the first motor 8 is turned off and the fourth motor 21 is started. The output shaft of the fourth motor 21 rotates to drive the first screw rod 22 fixed to it to rotate. The first screw rod 22 drives the first nut seat 23 to move along the first screw rod 22 and the first slide rail 24. The first nut seat 23 drives the sliding block 19 to move downward. The sliding block 19 drives the rotating rod 20 and the grinding wheel 25 to move downward, thereby inserting the grinding wheel 25 into the thermos cup. Next, the third motor 18 and the second motor 13 are activated. The output shaft of the third motor 18 rotates, driving the rotating rod 20, which in turn drives the grinding wheel 25. The output shaft of the second motor 13 rotates, driving the second driving wheel 15 fixedly connected thereto. The second driving wheel 15 drives the second driven wheel 16 connected thereto via a belt drive. The second driven wheel 16 drives the rotating shaft 14, which in turn drives the fixed sleeve 6. It is worth noting that in this embodiment, the third motor 18 and the second motor 13 are configured so that the grinding wheel 25 rotates in the opposite direction of the fixed direction, thereby grinding and polishing the inner wall of the thermos cup.

[0033] At the same time, when the grinding wheel 25 is inserted into the thermos cup, the cover body 34 contacts the first turntable 4, and the cover body 34 cannot move further downward. The connecting rod 33 moves on the sliding block 19, thereby causing the dust-proof folding tube 36 to fold and shrink. The cover body 34 is buckled at the mouth of the fixed sleeve 6. While polishing, the dust suction device is started, and the dust suction device absorbs the dust generated by grinding and polishing through the connecting tube 35.

[0034] After the rough polishing process is completed, similarly, the output shaft of the fourth motor 21 is rotated in the opposite direction to raise the grinding wheel 25, and then the first turntable 4 is rotated to rotate the fixed sleeve 6 with the thermos cup in turn to the polishing structure 3 equipped with the fine polishing wheel and the fine polishing wheel for polishing.

[0035] Afterwards, the first turntable 4 rotates the fixed sleeve 6 with the thermos cup to the polishing assembly 37, and starts the sixth motor 42. The sixth motor 42 drives the third screw rod to rotate, and the third screw rod drives the third nut seat to move downward along the third screw rod and the third slide rail, so that the silicone grinding head 41 is inserted into the thermos cup until the silicone grinding head 41 contacts the inner wall of the bottom of the thermos cup. The fixed sleeve 6 is rotated to polish the inner wall of the bottom of the thermos cup.

[0036] Finally, the fixing sleeve 6 containing the thermos cup is turned back in front of the staff, who then takes it out.

[0037] In this embodiment, when the sanding belt needs to be replaced, the sanding belt feeding cylinder 55 is started, the piston rod of the sanding belt feeding cylinder 55 is extended, driving the rotating rod 54 to rotate, and the rotating rod 54 drives the active roller 52 to rotate, thereby pulling a portion of the sanding belt into the sanding belt receiving disk 47, and then the sanding belt receiving motor 48 is started to rotate the sanding belt receiving disk 47, so that the pulled part of the sanding belt is wound around the sanding belt receiving disk 47.

[0038] In this embodiment, if the polishing process requires stopping for inspection, after the grinding wheel 25 and the silicone grinding head 41 are raised, the grinding wheel 25 and the silicone grinding head 41 are still located above the fixed sleeve 6, which will affect the removal of the thermos cup. In this case, the fifth motor 27 can be started, and the output shaft of the fifth motor 27 rotates to drive the second screw 28 to rotate, thereby driving the second nut seat 29 to move, the second nut seat 29 drives the sliding plate 30 to move, and the sliding plate 30 drives the sliding block 19 to move laterally, thereby causing the grinding wheel 25 to move laterally, so that the grinding wheel 25 is no longer located above the fixed sleeve 6. By starting the seventh motor 43, the output shaft of the seventh motor 43 rotates to drive the fourth screw to rotate, thereby driving the fourth nut seat to move, the fourth nut seat drives the mounting plate 40 to move, and the mounting plate 40 drives the silicone grinding head 41 to move laterally, thereby causing the silicone grinding head 41 to move laterally, so that the silicone grinding head 41 is no longer located above the fixed sleeve 6.

[0039] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "mounted / connected," and "connected" should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention in specific circumstances.

[0041] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0042] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method 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 can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A rotary internal polishing machine, characterized in that: It comprises a frame (1), a rotating table (2) rotatably connected to the frame (1), and three polishing structures (3) fixed to the frame (1); The rotating table (2) comprises a first rotating disk (4), a first driving structure, a second rotating disk (5), a plurality of fixed sleeves (6) and a plurality of second driving structures. The first rotating disk (4) is located at the top of a frame (1) and is rotatably connected to the frame (1). The second rotating disk (5) is located in the frame (1). A plurality of fixed rods (7) are fixedly connected between the second rotating disk (5) and the first rotating disk (4). The first driving structure comprises a first motor (8) and a cam divider (9). The first motor (8) is installed in the frame (1). A first driving wheel (10) is fixedly connected to the output shaft of the first motor (8). A first driven wheel (11) is fixedly connected to the input end of the cam divider (9). The first driven wheel (11) is connected to the first driving wheel (10) via a belt transmission. The output end of the cam divider (9) is fixedly connected to the second rotating disk (5). The plurality of fixed sleeves (6) are distributed in an array. The fixing sleeve (6) is rotatably connected to the top end of the second rotating disk (5), the top end of the fixing sleeve (6) passes through the first rotating disk (4) and is rotatably connected to the first rotating disk (4), the inner side wall of the fixing sleeve (6) is adhered with an annular rubber sleeve, the annular rubber sleeve is interference fit with the thermos cup, the positions of the plurality of second driving structures correspond to the plurality of fixing sleeves (6) one by one, the second driving structure comprises a mounting frame (12), a second motor (13) and a rotating shaft (14), the mounting frame (12) is mounted on the bottom end of the second rotating disk (5), the second motor (13) is fixedly mounted on the mounting frame (12), a second driving wheel (15) is fixedly connected to the output shaft of the second motor (13), the top end of the rotating shaft (14) is fixedly connected to the fixing sleeve (6), the bottom end of the rotating shaft (14) is fixedly connected to the second driven wheel (16), and the second driven wheel (16) and the second driving wheel (15) are connected via a belt transmission; The positions of the three polishing structures (3) correspond to the three adjacent fixed sleeves (6) one by one. The polishing structure (3) comprises a bracket (17), a third motor (18), a sliding block (19) and a rotating rod (20). The bracket (17) is longitudinally arranged and fixed to the top of the frame (1). A fourth motor (21) is installed on the top of the bracket (17). A first screw rod (22) is fixed on the output shaft of the fourth motor (21). The bottom end of the first screw rod (22) is rotatably connected to the bottom end of the bracket (17). A first nut seat (23) is sleeved on the outside of the first screw rod (22). Two first slide rails (24) are also arranged in the bracket (17) and are respectively located on both sides of the first screw rod (22). , the two first slide rails (24) are arranged in parallel with the first screw rod (22), the two ends of the first nut seat (23) are respectively slidably sleeved on the outside of the two first slide rails (24), the sliding block (19) is fixedly connected to the first nut seat (23), the third motor (18) is installed on the top of the sliding block (19), the output shaft of the third motor (18) passes through the sliding block (19) and is fixedly connected to the rotating rod (20), the bottom end of the rotating rod (20) is installed with a grinding wheel (25), the position of the grinding wheel (25) corresponds to the position of the fixed sleeve (6), and the grinding wheels (25) on the three polishing structures (3) are respectively a coarse polishing grinding wheel, a fine polishing grinding wheel and a fine polishing grinding wheel along the rotation direction of the first turntable (4); The frame (1) is also provided with a polishing assembly (37) for polishing the inner bottom wall of the thermos cup. The positions of the polishing assembly (37) and the three polishing structures (3) correspond to the four adjacent fixing sleeves (6) one by one. The polishing assembly (37) comprises a first base (38), a second base (39), a mounting plate (40) and a silicone grinding head (41). The first base (38) is longitudinally arranged at the top of the frame (1). A sixth motor (42) is installed at the top of the first base (38). A third screw rod is fixed on the output shaft of the sixth motor (42). The bottom end of the third screw rod is rotatably connected to the bottom end of the first base (38). The outer sleeve of the third screw rod is provided with a third nut seat. The first base (3 8) is also provided with two third slide rails respectively located on both sides of the third screw rod, the two third slide rails are arranged in parallel with the third screw rod, the two ends of the third nut seat are respectively slidably sleeved on the outside of the two third slide rails, the second base (39) is fixedly connected to the third nut seat, and is perpendicular to the first base (38), one end of the second base (39) is installed with a seventh motor (43), the output shaft of the seventh motor (43) is fixed with a third driving wheel (44), the second base (39) is provided with a fourth screw rod, one end of the fourth screw rod is fixed with a third driven wheel (45), the third driven wheel (45) is connected to the third driving wheel (44) through a belt drive, and the other end of the fourth screw rod is connected to the second base The other end of the seat (39) is rotatably connected, the outer part of the fourth screw rod is sleeved with a fourth nut seat, and two fourth slide rails are also arranged in the second base (39) and are respectively located on both sides of the fourth screw rod, and the two fourth slide rails are arranged in parallel with the fourth screw rod. The two ends of the fourth nut seat are respectively slidably sleeved on the outside of the two fourth slide rails, and the mounting plate (40) is fixedly connected to the fourth nut seat, and the top end of the mounting plate (40) is rotatably connected with a sanding belt disc (46) and a sanding belt disc (47), and the top end of the mounting plate (40) is also provided with a sanding belt motor (48) for driving the sanding belt disc (47) to rotate, and the silicone grinding head (41) is installed at the bottom end of the mounting plate (40), and the middle position of the mounting plate (40) is provided with A tensioning wheel (49) and a tensioning part (50) are provided. The tensioning part (50) comprises a frame (51), an active roller (52) and a driven roller (53). The frame (51) is fixedly mounted on a mounting plate (40). The active roller (52) and the driven roller (53) are both rotatably connected to the frame (51). A rotating rod (54) passing through the frame (51) is fixedly connected to the active roller (52). A sanding belt feeding cylinder (55) is also provided on the mounting plate (40). The piston rod of the sanding belt feeding cylinder (55) is rotatably connected to the rotating rod (54). A sanding belt clamping cylinder (56) and a top block (57) are also provided on the mounting plate (40). A pressing block (58) is fixed to the piston rod of the sanding belt clamping cylinder (56).The sand belt loading disk (46) is equipped with a sand belt, one end of which passes through the tensioning wheel (49), passes through the pressure block (58) and the top block (57), passes through the silicone grinding head (41), passes through the gap between the driving roller (52) and the driven roller (53), and is fixedly connected to the sand belt receiving disk (47).

2. A rotary internal polishing machine according to claim 1, characterized in that: A transversely arranged sliding seat (26) is fixed on the first nut seat (23), a fifth motor (27) is installed on one end of the sliding seat (26), a second screw rod (28) is fixed on the output shaft of the fifth motor (27), the other end of the second screw rod (28) is rotatably connected to the other end of the sliding seat (26), a second nut seat (29) is sleeved on the outside of the second screw rod (28), a sliding plate (30) is fixed on the second nut seat (29), two second slide rails (31) are respectively located on both sides of the second screw rod (28) are arranged in parallel with the second screw rod (28), a sliding sleeve (32) for sleeved on the second slide rail (31) and moving along the second slide rail (31) is fixed on the sliding plate (30), and the sliding block (19) is fixedly connected to the sliding plate (30).

3. A rotary internal polishing machine according to claim 1, characterized in that: A connecting rod (33) is slidably connected to the sliding block (19), and the connecting rod (33) extends in the direction of the rotating rod (20). A cover body (34) sleeved on the outside of the grinding wheel (25) is fixed to the bottom of the connecting rod (33), and a connecting pipe (35) is arranged at the top of the cover body (34), and the connecting pipe (35) is connected to an external dust collection device through a pipeline.

4. A rotary internal polishing machine according to claim 3, characterized in that: A dustproof folding tube (36) is fixedly connected between the cover body (34) and the sliding block (19).

5. A rotary internal polishing machine according to claim 1, characterized in that: The mounting plate (40) is also provided with a sanding belt tightening cylinder (59), and a tightening rotating wheel (60) is rotatably connected to the piston rod of the sanding belt tightening cylinder (59).

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