Pressure cooker inner cylinder upper opening flanging circumference polishing device

Abstract

The invention discloses a pressure cooker inner cylinder upper opening flanging circumference polishing device, and relates to the field of cooker inner container polishing machining.The pressure cooker inner cylinder upper opening flanging circumference polishing device comprises a machining table top and a positioning claw disc fixedly erected on the upper end face of the machining table top, the positioning claw disc is used for clamping and positioning a cooker inner container, and a rotary disc is further placed over the positioning claw disc; the center point of the rotary disc and the center point of the positioning claw disc are located on the same vertical axis, a lifting plate is arranged above the rotary disc, a second motor is fixedly erected on the upper end face of the lifting plate, and a lifting mechanism playing a role in lifting the lifting plate is further arranged on the upper end face of the machining table top. The pot inner container can be limited to the bottom of the rotary disc through the positioning claw disc, the positions of the polishing units are adjusted through the lifting mechanism and the distance adjusting unit, the two polishing units are made to make contact with a crack between the outer wall of the pot inner container and the outer ring of the turned edge at the same time, and then the polishing units are started; and the two grinding units are used for carrying out all-directional polishing and grinding treatment on the outer ring of the turned edge of the pot liner.

Description

Technical Field

[0001] This invention relates to the field of pot inner liner polishing, specifically a device for circumferential polishing of the upper edge of a pressure cooker inner cylinder. Background Technology

[0002] After the pressure cooker inner pot is manufactured, both the inner and outer surfaces need to be polished to improve its oxidation resistance and smoothness, and also to make it easier for users to clean.

[0003] The upper edge of the inner pot has a flanged outer ring. This ring allows the inner pot to be secured inside the pressure cooker and also makes it easy for the user to remove it from the pressure cooker. However, when the inner pot cannot be polished along with the flanged outer ring, it cannot be effectively polished. Because there is an arc-shaped gap between the flanged outer ring and the outer wall of the inner pot, this area is currently polished manually with a hand-held polishing cloth. However, manually polishing the flanged outer ring of the rapidly rotating inner pot with a hand-held polishing cloth can easily lead to workplace injuries, posing a significant safety hazard. Summary of the Invention

[0004] The purpose of this invention is to provide a device for circumferential polishing of the flange at the top of the inner cylinder of a pressure cooker, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a circumferential polishing device for the flange of the inner cylinder of a pressure cooker, comprising: a processing table and a positioning claw plate fixedly mounted on the upper surface of the processing table, the positioning claw plate being used to clamp and position the inner liner of the cooker; a turntable is placed directly above the positioning claw plate, and the center point of the turntable and the center point of the positioning claw plate are located on the same vertical axis; a lifting plate is provided above the turntable, and a second motor is fixedly mounted on the upper surface of the lifting plate; the output end of the lifting plate faces downwards, and the output end of the lifting plate... Fixed to the center of the turntable, the upper surface of the processing table is also provided with a lifting mechanism for lifting the lifting plate. The lifting mechanism includes a slide rail frame located outside the positioning claw plate, and the slide rail frame is fixed to the processing table. The end of the lifting plate away from the second motor is slidably assembled inside the slide rail frame. A first motor is fixedly mounted on the top of the slide rail frame. A threaded rod is rotatably assembled inside the slide rail frame, and the output end of the first motor is fixed to the top of the first motor. The lifting plate is threadedly assembled outside the threaded rod. It also includes: a polishing unit, which is used to polish the outer ring of the port of the inner pot in all directions. The polishing unit is located below the turntable. There are two polishing units, and the two polishing units are distributed equidistantly in a circle with the turntable as the center. A spacing adjustment unit is used to adjust the spacing between the two grinding units, thereby adapting to the grinding of the outer ring of the inner pot port of different sizes.

[0006] Preferably, the polishing unit includes a sliding frame slidably mounted on the lower end face of the turntable, and a fixed frame is fixedly provided at the lower end of the sliding frame. The sliding trajectory of the two sliding frames is the diameter of the turntable. A third motor is placed at the bottom of the fixed frame, and a polishing wheel is fixedly sleeved on the output end of the third motor. The polishing wheel is a V-shaped flexible polishing wheel, and the polishing wheel faces the outer ring of the port of the inner pot. The two polishing wheels are symmetrically distributed. A displacement component is also provided between the third motor and the fixed frame. The displacement component causes the polishing wheel to perform a circumferential polishing treatment on the outer ring of the port of the inner pot.

[0007] Preferably, the two fixing frames are both arc-shaped on their adjacent sides, and the arc shape extends towards the inner pot. The displacement component includes an arc-shaped slide rail fixed inside the arc edge of the fixing frame. A sliding insert is fixedly provided at the end of the third motor away from the polishing wheel, and the sliding insert is slidably assembled inside the arc-shaped slide rail. A sleeve rod is placed inside the fixing frame, and a slider is slidably assembled inside the sleeve rod. A connecting rod that slides through the second spring is fixedly provided at the bottom of the slider, and the other end of the connecting rod is hinged to the inside of the sliding insert. A second spring is also fixedly provided between the end of the slider away from the connecting rod and the sleeve rod. A sleeve rod is fixedly provided at the top of the sleeve rod, and both ends of the sleeve rod rotatably pass through the fixing frame. The positioning rod is perpendicular to the output end of the second motor. A pushing component that causes the sleeve rod to swing back and forth is also provided inside the second motor.

[0008] Preferably, the pushing component includes a reciprocating lead screw vertically rotatably mounted on the top of the sliding frame, with the threads of the reciprocating lead screw distributed below the turntable. A reciprocating threaded sleeve is threadedly mounted on the outer surface of the reciprocating lead screw, and a limiting frame is fixedly provided on the outer wall of the reciprocating threaded sleeve. A limiting groove is formed on the side wall of the sliding frame, and a locking block that slidably engages with the limiting groove is fixedly provided at the end of the reciprocating threaded sleeve away from the limiting frame. A movable rod is slidably arranged inside the limiting frame, and a connecting arm is fixedly provided between both ends of the positioning rod and the movable rod. A first driving member is provided on the upper end face of the reciprocating lead screw, and the first driving member is used to drive the reciprocating lead screw to rotate.

[0009] Preferably, the first driving component includes a first motor located above the sliding frame, and the position of the first motor relative to the sliding frame is fixed, and the output end of the sliding frame is fixedly assembled to the top of the reciprocating lead screw through a coupling.

[0010] Preferably, the first driving component includes a second transmission wheel fixedly sleeved on the outer surface of the upper end of each of the reciprocating lead screws, a first transmission wheel fixedly mounted on the lower end face of the lifting plate, and the first transmission wheel located between the turntable and the lifting plate. A transmission belt is connected between the two second transmission wheels and the first transmission wheel. The second transmission wheels and the transmission belt can also be replaced by synchronous gears and synchronous toothed belts. A tensioning component is also provided between the turntable and the transmission belt.

[0011] Preferably, the tensioning member includes two circumferentially equidistant limiting blocks fixedly mounted on the upper surface of the turntable, and a sliding rod is axially slidably mounted inside the limiting block. A pulley frame is fixedly mounted at one end of the sliding rod near the transmission belt, and a pusher wheel is rotatably mounted inside the pulley frame. The pusher wheel abuts against the outer wall of the transmission belt. A first spring is also fixedly mounted between the limiting block and the pulley frame, and the first spring is sleeved on the outside of the sliding rod.

[0012] Preferably, the spacing adjustment unit includes a strip groove formed inside the turntable for the sliding of the reciprocating lead screw. Two racks are arranged alternately between the two sliding frames, and tension springs are fixedly provided between the ends of the two racks that are far apart from each other and the two sliding frames. The racks and tension springs are distributed at the bottom of the turntable. A limit frame is fixedly provided at the center of the bottom of the turntable, and the two racks are slidably inserted into the limit frame. A drive gear is distributed inside the limit frame, and the drive gear meshes with the two racks. A first rotating shaft that rotates through the limit frame is fixedly provided inside the drive gear, and a second driving member is provided at one end of the first rotating shaft.

[0013] Preferably, the second driving component includes a worm gear fixedly sleeved on one end of the first rotating shaft, a worm sleeve meshing with the outer side of the worm gear, and a second rotating shaft rotating through the turntable is fixedly installed inside the worm sleeve. A handle or a second motor is provided on the upper end face of the second rotating shaft. The handle is fixedly sleeved on the outside of the second rotating shaft; The second motor is fixed in position relative to the turntable, and the output end of the second motor is fixedly assembled with the second rotating shaft.

[0014] Preferably, a limiting component is further provided between the sliding frame and the turntable. The limiting component includes a hollow sleeve fixedly mounted on the upper end face of the sliding frame, and two symmetrically distributed branch sleeves are fixedly connected to the outer wall of the hollow sleeve. The hollow sleeve is also located inside the strip groove. The two branch sleeves are symmetrical front and back. A brake rod is slidably placed inside each branch sleeve, and a detachable rubber block is mounted on the lower end face of the brake rod. A friction strip that contacts the bottom of the rubber block is fixedly embedded on the upper end face of the turntable. A pull rod is coaxially mounted inside the hollow sleeve, and the bottom of the pull rod is fixed to the limiting frame. The pull rod slides through the sliding frame. Two limiting discs distributed inside the hollow sleeve are sleeved on the outer surface of the pull rod, and a third spring is fixedly provided between the two limiting discs. The two limiting discs are both distributed on the upper part of the brake rod. The two limiting discs, which are distributed vertically, are fixedly mounted and movably mounted to the pull rod, respectively.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This invention uses a positioning claw plate to confine the inner pot to the bottom of the turntable. The position of the polishing unit is adjusted by the lifting mechanism and the spacing adjustment unit, so that the two polishing units simultaneously contact the gap between the outer wall of the inner pot and the outer edge of the flange. At this time, the polishing units are started, and the two polishing units perform all-round polishing and grinding of the outer edge of the inner pot. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the bottom structure of the turntable of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 This is a schematic diagram of the structure of the first and second transmission wheels of the present invention; Figure 5 This is a schematic diagram of the internal structure of the fixing frame of the present invention; Figure 6 This is a schematic diagram of the circumferential displacement state structure of the polishing wheel of the present invention; Figure 7 This is a schematic diagram of the internal structure of the hollow sleeve in this invention; Figure 8 For the present invention Figure 7 Enlarged view of section B in the middle.

[0017] In the diagram: 1. Machining table; 2. Positioning claw plate; 3. Slide rail frame; 4. Threaded rod; 5. First motor; 6. Lifting plate; 7. Second motor; 8. Turntable; 9. Sliding frame; 10. Tension spring; 11. Rack; 12. Limiting frame; 13. Drive gear; 14. First rotating shaft; 15. Worm gear; 16. Second rotating shaft; 17. Worm sleeve; 18. First transmission wheel; 19. Reciprocating lead screw; 20. Second transmission wheel; 21. Transmission belt; 22. Limiting block; 23. Slide rod; 24. Pulley frame; 25. Push roller; 26. First 27. Spring; 28. Fixing frame; 29. ​​Third motor; 30. Polishing wheel; 31. Arc slide rail; 32. Sliding insert; 33. Positioning rod; 34. Sleeve rod; 35. Slider; 36. Second spring; 37. Connecting rod; 38. Moving rod; 39. Limiting frame; 40. Reciprocating threaded sleeve block; 41. Locking block; 42. Limiting groove; 43. Strip groove; 44. Hollow sleeve; 45. Pull rod; 46. Limiting disc; 47. Third spring; 48. Branch sleeve; 49. Brake rod; 50. Rubber block; 51. Friction strip. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1: Please refer to Figures 1-6 The diagram illustrates a circumferential polishing device for the flange of the inner rim of a pressure cooker. It includes: a processing table 1 and a positioning claw plate 2 fixedly mounted on the upper surface of the processing table 1. The positioning claw plate 2 is used to clamp and position the inner rim of the cooker. A turntable 8 is placed directly above the positioning claw plate 2, with the center point of the turntable 8 and the center point of the positioning claw plate 2 located on the same vertical axis. A lifting plate 6 is positioned above the turntable 8, and a second motor 7 is fixedly mounted on the upper surface of the lifting plate 6. The output end of the lifting plate 6 faces downwards and is fixed to the center of the turntable 8. The upper surface of the processing table 1 also includes... The lifting mechanism that lifts the lifting plate 6 includes a slide rail frame 3 located outside the positioning claw plate 2 and the slide rail frame 3 is fixed to the processing table 1. The end of the lifting plate 6 away from the second motor 7 is slidably mounted inside the slide rail frame 3. The top of the slide rail frame 3 is fixedly mounted with a first motor 5. The slide rail frame 3 is also rotatably mounted with a threaded rod 4 inside. The output end of the first motor 5 is fixed to the top of the first motor 5. The lifting plate 6 is threadedly mounted on the outside of the threaded rod 4. By driving the threaded rod 4 with the first motor 5, the lifting plate 6 can move up and down with the second motor 7 and the turntable 8. It also includes: a polishing unit, which is used to polish the outer ring of the port of the inner pot. The polishing unit is located below the turntable 8. There are two polishing units, and the two polishing units are distributed equidistantly in a circle with the turntable 8 as the center. The spacing adjustment unit is used to adjust the spacing between the two grinding units, thereby adapting to the grinding of the outer ring of the inner pot port of different sizes.

[0020] The polishing unit includes a sliding frame 9 slidably mounted on the lower end face of the turntable 8, and a fixed frame 27 is fixedly installed at the lower end of the sliding frame 9. The sliding trajectory of the two sliding frames 9 is the diameter of the turntable 8. A third motor 28 is placed at the bottom of the fixed frame 27, and a polishing wheel 29 is fixedly sleeved on the output end of the third motor 28. The polishing wheel 29 is a V-shaped flexible polishing wheel, and the polishing wheel 29 faces the outer ring of the port of the inner pot. The two polishing wheels 29 are symmetrically distributed. The polishing wheel 29 is driven by the third motor 28 to polish the surface of the outer ring of the port of the inner pot. A displacement component is also provided between the third motor 28 and the fixed frame 27. The displacement component causes the polishing wheel 29 to perform a circumferential polishing treatment on the outer ring of the port of the inner pot.

[0021] Both fixed brackets 27 have an arc-shaped side facing each other, extending towards the inner pot. The displacement component includes an arc-shaped slide rail 30 fixed within the arc edge of the fixed bracket 27. A sliding block 31 is fixedly mounted on the end of the third motor 28 away from the polishing wheel 29, and the sliding block 31 is slidably fitted inside the arc-shaped slide rail 30. A sleeve rod 33 is placed inside the fixed bracket 27, and a slider 34 is slidably fitted inside the sleeve rod 33. A connecting rod 36 that slides through the second spring 35 is fixedly mounted on the bottom of the slider 34, and the other end of the connecting rod 36 is hinged to the inside of the sliding block 31. A second spring 35 is also fixedly mounted between the end of the slider 34 away from the connecting rod 36 and the sleeve rod 33. A [missing information - likely a component or component] is fixedly mounted on the top of the sleeve rod 33. The sleeve rod 33 has two ends that rotate through the fixed frame 27. The positioning rod 32 is perpendicular to the output end of the second motor 7. The second motor 7 is also equipped with a pusher that makes the sleeve rod 33 swing back and forth. Under the action of the pusher, the sleeve rod 33 can swing back and forth in a circular motion inside the fixed frame 27. During the swing, the sliding insert 31 and the arc slide rail 30 can change the position of the third motor 28 and the polishing wheel 29. When the polishing wheel 29 is polished at the gap between the outer ring of the inner pot and the outer wall of the inner pot, the polishing wheel 29 can rotate around to the upper surface of the outer ring of the inner pot while rotating and polishing, so as to fully polish the outer ring of the inner pot without dead angles.

[0022] The pushing component includes a reciprocating screw 19 vertically rotatably mounted on the top of the sliding frame 9, with the threads of the reciprocating screw 19 distributed below the turntable 8. A reciprocating threaded sleeve 40 is threaded onto the outer surface of the reciprocating screw 19, and a limit frame 39 is fixedly provided on the outer wall of the reciprocating threaded sleeve 40. A limit groove 42 is formed in the side wall of the sliding frame 9, and a locking block 41 that slides and slidably engages with the limit groove 42 is fixedly provided at the end of the reciprocating threaded sleeve 40 away from the limit frame 39. The limit frame 39... An internal sliding movable rod 38 is provided. A connecting arm 37 is fixedly provided between both ends of the positioning rod 32 and the movable rod 38. When the reciprocating screw 19 rotates, the reciprocating threaded sleeve 40 can move up and down with the limiting frame 39. The limiting frame 39 can then lift the sleeve 33 through the movable rod 38, thereby causing the connecting rod 36 to change position with the sliding insert 31. A first driving member is provided on the upper end face of the reciprocating screw 19. The first driving member is used to drive the reciprocating screw 19 to rotate.

[0023] The first driving component includes a first motor located above the sliding frame 9, and the position of the first motor and the sliding frame 9 is fixed relative to each other. The output end of the sliding frame 9 is fixedly assembled with the top of the reciprocating lead screw 19 through a coupling. The first motor can drive the reciprocating lead screw 19 to rotate inside the sliding frame 9. Alternatively, the reciprocating lead screw 19 can be replaced with a common transmission lead screw. When the first motor drives the transmission lead screw to rotate back and forth, it can also cause the reciprocating threaded sleeve block 40 to move up and down back and forth.

[0024] The first driving component includes a second transmission wheel 20 fixedly sleeved on the outer surface of the upper end of each reciprocating lead screw 19. A first transmission wheel 18 is fixedly mounted on the lower end face of the lifting plate 6, and the first transmission wheel 18 is located between the turntable 8 and the lifting plate 6. A transmission belt 21 is connected between the two second transmission wheels 20 and the first transmission wheel 18. The second transmission wheels 20 and the transmission belt 21 can also be replaced by synchronous gears and synchronous toothed belts. A tensioning component is also provided between the turntable 8 and the transmission belt 21. Under the action of the tensioning component, when the distance between the two second transmission wheels 20 is shortened, the tension of the transmission belt 21 can still be maintained, so that when the turntable 8 rotates with the two reciprocating lead screws 19 and the second transmission wheel 20, the second transmission wheel 20 can rotate due to the fixation of the first transmission wheel 18.

[0025] The spacing adjustment unit includes a strip groove 43 inside the turntable 8 for sliding the reciprocating lead screw 19. Two racks 11 are arranged alternately between the two sliding frames 9. Tension springs 10 are fixedly installed between the ends of the two racks 11 that are far apart from each other and the two sliding frames 9. The racks 11 and tension springs 10 are distributed at the bottom of the turntable 8. A limit frame 12 is fixedly installed at the center of the bottom of the turntable 8. The two racks 11 slide through the inside of the limit frame 12. A drive gear 13 is distributed inside the limit frame 12 and meshes with the two racks 11. A first rotating shaft 14 is fixedly installed inside the drive gear 13 and rotates through the limit frame 12. A second driving member is also provided at one end of the first rotating shaft 14. Under the action of the second driving member, the first rotating shaft 14 can rotate with the drive gear 13, thereby making the two racks 11 move synchronously in opposite directions.

[0026] The second driving component includes a worm gear 15 fixedly sleeved on one end of the first rotating shaft 14. A worm sleeve 17 is meshed on the outer side of the worm gear 15, and a second rotating shaft 16 that rotates through the turntable 8 is also fixedly installed inside the worm sleeve 17. A handle or a second motor is provided on the upper end face of the second rotating shaft 16. The handle is fixedly sleeved on the outside of the second rotating shaft 16; The position of the second motor is fixed relative to the turntable 8, and the output end of the second motor is fixedly assembled with the second rotating shaft 16; The second shaft 16 and the worm sleeve 17 can be rotated manually via a handle, or automatically via a second motor. Example 2: Please refer to Figure 4 This embodiment is a further description of other embodiments. The tensioning member includes two circumferentially equidistant limiting blocks 22 fixedly mounted on the upper surface of the turntable 8. A sliding rod 23 is axially slidably mounted inside the limiting block 22. A pulley frame 24 is fixedly mounted at one end of the sliding rod 23 near the transmission belt 21. A pusher wheel 25 is rotatably mounted inside the pulley frame 24. The pusher wheel 25 abuts against the outer wall of the transmission belt 21. A first spring 26 is also fixedly mounted between the limiting block 22 and the pulley frame 24. The first spring 26 is sleeved on the outside of the sliding rod 23. Through the elastic pressure of the first spring 26 on the pulley frame 24, the pusher wheel 25 can push the transmission belt 21. When the distance between the two second transmission wheels 20 is shortened, the transmission belt 21 can be deformed under the elastic extension of the first spring 26, thereby maintaining the tension of the transmission belt 21. Example 3: Please refer to Figure 7 and Figure 8This embodiment is a further explanation of other embodiments. A limiting component is also provided between the sliding frame 9 and the turntable 8. The limiting component includes a hollow sleeve 44 fixedly mounted on the upper end face of the sliding frame 9. The outer wall of the hollow sleeve 44 is fixedly connected to two symmetrically distributed branch sleeves 48. The hollow sleeve 44 is also located inside the strip groove 43. The two branch sleeves 48 are symmetrical front and back. A brake rod 49 is slidably placed inside each branch sleeve 48. A detachable rubber block 50 is mounted on the lower end face of the brake rod 49. A friction strip 51 that contacts the bottom of the rubber block 50 is fixedly embedded on the upper end face of the turntable 8. A pull rod 45 is coaxially mounted inside the hollow sleeve 44. The bottom of the pull rod 45 is connected to the... The limiting frame 39 is fixed, and the pull rod 45 slides through the sliding frame 9. Two limiting discs 46 distributed inside the hollow sleeve 44 are sleeved on the outer surface of the pull rod 45, and a third spring 47 is fixedly installed between the two limiting discs 46. The two limiting discs 46 are both distributed on the upper part of the brake rod 49. The two limiting discs 46, which are distributed vertically, are fixedly assembled with the pull rod 45 and movablely assembled with it, respectively. When the limiting frame 39 moves downward with the pull rod 45, the upper limiting disc 46 can move the lower limiting disc 46 through the third spring 47 and push the brake rod 49 downward, so that the bottom of the rubber block 50 is tightly pressed against the surface of the friction strip 51, thereby braking the position of the sliding frame 9 and the turntable 8. Working principle: The inner pot is placed on the upper surface of the positioning claw plate 2 by manual operation or a robotic arm. The positioning claw plate 2 is then controlled to clamp and position the inner pot. The position between the two fixed frames 27 can be adjusted by the first motor 5 and the second motor. The opposite movement of the two racks 11 can move the sliding frame 9 through the tension spring 10. When the two polishing wheels 29 clamp the inner pot, the continuous movement of the two racks 11 can elastically stretch the tension spring 10, thereby allowing the polishing wheels 29 to elastically press against the outer wall of the polishing wheel 29. When the polishing wheel 29 rotates rapidly under the drive of the third motor 28, the polishing effect can be improved through elastic pressure. After the position of the rack 11 is adjusted, the position of the lifting plate 6 and the turntable 8 is adjusted by the first motor 5 so that the outer ring of the polishing wheel 29 can abut against the outer wall of the inner pot. At this time, the third motor 28 drives the polishing wheel 29 to rotate at high speed, and the first motor 5 drives the turntable 8 to rotate slowly or drive the turntable 8 to rotate back and forth between 180 degrees and 300 degrees, so that the polishing wheel 29 can fully polish the gap between the inner pot and the outer edge. During the rotation of turntable 8, since the first transmission wheel 18 remains stationary, the second transmission wheel 20, driven by the transmission belt 21, rotates the reciprocating lead screw 19. Combined with the limiting groove 42's limiting of the locking block 41, this allows the reciprocating threaded sleeve 40 to move up and down with the limiting frame 39. Each time the limiting frame 39 moves downwards, the movable rod 38 can lift the sleeve 33 and connecting rod 36. Through the sliding fit of the sliding insert 31 and the arc-shaped slide rail 30, the third motor 28 drives the polishing wheel 29 to rotate in a circular motion. The rotation state is referenced... Figure 6 The polishing wheel 29 is in a false position. When the sleeve rod 33 lifts up with the sliding insert 31, the polishing wheel 29 can effectively grind and polish the upper surface of the outer ring of the flange, thereby realizing automatic all-round polishing of the outer ring of the inner pot flange.

[0027] When the polishing wheel 29 flips over to the top of the outer ring of the inner pot liner, the tension spring 10 is still stretched and the rack 11 is locked. Therefore, there is a risk that the polishing wheel 29 may slide from the outer ring of the inner pot liner towards the center of the inner pot liner. To address this, each time the limiting frame 39 moves downward with the pull rod 45, the limiting plate 46 can elastically press the brake rod 49 downward, so that the rubber block 50 is tightly pressed against the upper surface of the friction strip 51. This ensures that the sliding frame 9 will not slip and that the polishing wheel 29 can effectively polish the outer ring of the inner pot liner.

[0028] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0029] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A device for polishing the circumference of the flange at the top of the inner cylinder of a pressure cooker, characterized in that, include: The processing table (1) and the positioning claw plate (2) are fixedly mounted on the upper surface of the processing table (1). A turntable (8) is placed directly above the positioning claw plate (2). A lifting plate (6) is provided above the turntable (8). A second motor (7) is fixedly mounted on the upper surface of the lifting plate (6). The output end of the lifting plate (6) is fixed to the center of the turntable (8). A lifting mechanism that lifts the lifting plate (6) is also provided on the upper surface of the processing table (1). Also includes: The polishing unit is used to polish the outer ring of the port of the inner pot in all directions. The polishing unit is located below the turntable (8). There are two polishing units, and the two polishing units are distributed equidistantly in a circle with the turntable (8) as the center. A spacing adjustment unit is used to adjust the spacing between the two grinding units, thereby adapting to the grinding of the outer ring of the inner pot port of different sizes.

2. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 1, characterized in that: The polishing unit includes a sliding frame (9) that is slidably mounted on the lower end face of the turntable (8), and a fixed frame (27) is fixedly provided at the lower end of the sliding frame (9). A third motor (28) is placed at the bottom of the fixed frame (27), and a polishing wheel (29) is fixedly sleeved on the output end of the third motor (28). The two polishing wheels (29) are symmetrically distributed. A displacement component is also provided between the third motor (28) and the fixed frame (27). The displacement component causes the polishing wheel (29) to perform a circumferential polishing treatment on the outer ring of the inner pot port.

3. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 2, characterized in that: The two fixed frames (27) are both arc-shaped on the side closest to each other. The displacement component includes an arc slide rail (30) fixed inside the arc edge of the fixed frame (27). A sliding block (31) is fixedly provided at the end of the third motor (28) away from the polishing wheel (29). The sliding block (31) is slidably assembled inside the arc slide rail (30). A sleeve rod (33) is placed inside the fixed frame (27). A slider (34) is slidably assembled inside the sleeve rod (33). A connecting rod (36) is fixedly provided at the bottom of the slider (34). The other end of the connecting rod (36) is hinged to the inside of the sliding block (31). A sleeve rod (33) is fixedly provided at the top of the sleeve rod (33). Both ends of the sleeve rod (33) rotate through the fixed frame (27). A pushing component is also provided inside the second motor (7) to make the sleeve rod (33) swing back and forth.

4. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 3, characterized in that: The pushing component includes a reciprocating screw (19) rotatably mounted on the top of the sliding frame (9). The outer surface of the reciprocating screw (19) is threaded with a reciprocating threaded sleeve (40), and a limiting frame (39) is fixedly provided on the outer wall of the reciprocating threaded sleeve (40). A limiting groove (42) is opened on the side wall of the sliding frame (9), and a locking block (41) that is slidably assembled with the limiting groove (42) is fixedly provided at one end of the reciprocating threaded sleeve (40) away from the limiting frame (39). A movable rod (38) is slidably provided inside the limiting frame (39). A connecting arm (37) is fixedly provided between both ends of the positioning rod (32) and the movable rod (38). A first driving member is provided on the upper end face of the reciprocating screw (19), and the first driving member is used to drive the reciprocating screw (19) to rotate.

5. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 4, characterized in that: The first driving component includes a first motor located above the sliding frame (9), and the position of the first motor relative to the sliding frame (9) is fixed. The output end of the sliding frame (9) is fixedly assembled with the top of the reciprocating screw (19).

6. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 4, characterized in that: The first driving component includes a second transmission wheel (20) fixedly sleeved on the outer surface of the upper end of each reciprocating screw (19), a first transmission wheel (18) fixedly mounted on the lower end face of the lifting plate (6), a transmission belt (21) is connected between the two second transmission wheels (20) and the first transmission wheel (18), and a tensioning component is also provided between the turntable (8) and the transmission belt (21).

7. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 6, characterized in that: The support includes two circumferentially equidistant limit blocks (22) fixedly mounted on the upper surface of the turntable (8), and a slide rod (23) is axially slidably mounted inside the limit block (22). A pulley frame (24) is fixedly mounted at one end of the slide rod (23) near the transmission belt (21), and a pusher wheel (25) is rotatably mounted inside the pulley frame (24). A first spring (26) is also fixedly mounted between the limit block (22) and the pulley frame (24).

8. The device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 4, characterized in that: The spacing adjustment unit includes a strip groove (43) inside the turntable (8) for sliding of the reciprocating screw (19). Two racks (11) are arranged between the two sliding frames (9) in an alternating manner. Tension springs (10) are fixedly arranged between the ends of the two racks (11) that are far apart from each other and the two sliding frames (9). A limit frame (12) is fixedly arranged at the bottom center of the turntable (8). The two racks (11) slide through the inside of the limit frame (12). A drive gear (13) is distributed inside the limit frame (12). The drive gear (13) meshes with the two racks (11). A first rotating shaft (14) is fixedly arranged inside the drive gear (13) and rotates through the limit frame (12). A second driving member is also provided at one end of the first rotating shaft (14).

9. A device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 8, characterized in that: The second driving component includes a worm gear (15) fixedly sleeved on one end of the first rotating shaft (14), a worm sleeve (17) meshing with the outer side of the worm gear (15), and a second rotating shaft (16) rotating through the turntable (8) is also fixedly installed inside the worm sleeve (17). A handle or a second motor is provided on the upper end face of the second rotating shaft (16). The handle is fixedly sleeved on the outside of the second rotating shaft (16); The second motor is fixed relative to the turntable (8), and the output end of the second motor is fixedly assembled with the second rotating shaft (16).

10. A device for polishing the circumference of the flange at the upper opening of the inner cylinder of a pressure cooker according to claim 4, characterized in that: A limiting component is also provided between the sliding frame (9) and the turntable (8). The limiting component includes a hollow sleeve (44) fixedly mounted on the upper surface of the sliding frame (9). The outer wall of the hollow sleeve (44) is fixedly connected to two symmetrically distributed branch sleeves (48). A brake rod (49) is slidably placed inside each branch sleeve (48). A detachable rubber block (50) is mounted on the lower end face of the brake rod (49). A pull rod (45) is mounted inside the hollow sleeve (44). The bottom of the pull rod (45) is fixed to the limiting frame (39). Two limiting discs (46) are sleeved on the outer surface of the pull rod (45). A third spring (47) is fixedly arranged between the two limiting discs (46). The two limiting discs (46) distributed vertically are fixedly mounted and movablely mounted to the pull rod (45), respectively.

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