A sealing ring cutting structure and production device

Abstract

This invention discloses a sealing ring circumferential cutting structure and production device, relating to the field of sealing ring circumferential cutting technology. The invention includes a workbench, a negative pressure cylinder, a worm gear, and two turbines. The worm gear is rotatably connected to the negative pressure cylinder, and both turbines mesh with the worm gear. A first negative pressure mechanism includes two lifting members disposed on the inner wall of the negative pressure cylinder, each lifting member meshing with one of the two turbines. It also includes a negative pressure plate, with each pair of lifting members fixedly connected to the negative pressure plate. A second negative pressure mechanism includes multiple sliding cylinders slidably disposed on the bottom wall of the negative pressure cylinder, each sliding cylinder rotatably equipped with a sealing element. The worm gear drives the turbines to rotate, causing the lifting members to lift the negative pressure plate upwards, thus forming a negative pressure space between the negative pressure plate and the inner bottom wall of the negative pressure cylinder. This allows the sealing ring to be tightly adsorbed onto each sliding cylinder. By controlling the lifting distance of the negative pressure plate, the adsorption force can be controlled, eliminating the need for manual clamping of the sealing ring and making it suitable for sealing rings of different sizes.

Description

Technical Field

[0001] This invention relates to the field of sealing ring circumferential cutting technology, specifically to a sealing ring circumferential cutting structure and production apparatus. Background Technology

[0002] Most sealing rings are made from a variety of domestic and imported rubbers, with operating temperatures ranging from -60℃ to +200℃. The products are available in oil-resistant, steam-resistant, medical-grade, food-grade, fully transparent, high-strength, flame-retardant, and conductive rubbers. Sealing rings are used in various mechanical equipment to provide a seal under specified temperature and pressure conditions, as well as in different liquids and gases, whether stationary or in motion. The choice of sealing ring material is crucial to its sealing performance and service life. In the production process, most sealing rings are manufactured by using vulcanizing equipment with molds to heat and pressurize the rubber material into sealing rings.

[0003] When using vulcanizing equipment and molds to produce sealing rings, after the sealing ring is initially formed, it is necessary to perform a circumferential cut on one side of the sealing ring to remove the excess part of the main body side in order to achieve the required shape.

[0004] Currently, the common practice for circumferential cutting of sealing rings is to use a cylindrical clamp to hold the sealing ring and then rotate the clamp at high speed. The cutting blade contacts the sealing ring on the high-speed rotating clamp to circumferentially cut the sealing ring. This method requires manual care to hold the sealing ring to be processed on the clamp during circumferential cutting, and then manually remove the processed sealing ring after circumferential cutting. This is quite labor-intensive. In addition, the inner diameter of the cylindrical clamp is usually fixed, which cannot be used for sealing rings with different opening sizes. Summary of the Invention

[0005] The purpose of this invention is to provide a sealing ring circumferential cutting structure and production apparatus to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a sealing ring circumferential structure, comprising a worktable, a negative pressure cylinder, a worm gear, and two turbines, wherein the worm gear is rotatably connected to the negative pressure cylinder, and both turbines mesh with the worm gear; further comprising: a first negative pressure mechanism, comprising two lifting members slidably disposed on the inner wall of the negative pressure cylinder, wherein the two lifting members mesh with the two turbines in a one-to-one correspondence; and a negative pressure plate for forming a negative pressure space inside the negative pressure cylinder, wherein the two lifting members are fixedly connected to the negative pressure plate; and a second negative pressure mechanism, comprising a plurality of sliding cylinders slidably disposed on the bottom wall of the negative pressure cylinder, wherein each sliding cylinder is rotatably disposed with a sealing member.

[0007] Preferably, the bottom wall of the negative pressure cylinder is fixedly provided with a plurality of second screws, and a top plate is fixedly provided on the outer circumference of each of the slide cylinders. Each top plate is sleeved on the second screw in a corresponding manner, and a third spring is fixedly provided between each top plate and the bottom wall of the negative pressure cylinder.

[0008] Preferably, a guide rail is fixedly installed on the worktable, and a cutting component and a feeding component are slidably installed on the guide rail. A loading mechanism is also provided on the worktable.

[0009] Preferably, the feeding assembly includes a first slider that is slidably connected to the guide rail, a first sleeve that is fixedly mounted on the first slider, a first slide rod that is slidably mounted inside the first sleeve, and abutment posts that are fixedly mounted on both sides of the first slide rod. Two lifting plates are fixedly mounted on the worktable, and each of the lifting plates is provided with a lifting groove.

[0010] Preferably, a lifting plate is fixedly provided at the end of the first slide bar away from the first slider, and a limiting protrusion is fixedly provided on the lifting plate.

[0011] Preferably, the cutting assembly includes a second slider slidably disposed on a guide rail, a second sleeve fixedly disposed on the second slider, a second slide rod slidably disposed inside the second sleeve, a tool holder fixedly disposed at the end of the second slide rod away from the second slider, a cutting blade fixedly disposed on the tool holder, and a downward pressure rod fixedly disposed on the tool holder.

[0012] Preferably, the feeding mechanism includes a feeding cylinder, the outer circumferential surface of which is provided with a plurality of grooves, a third slide rod is slidably disposed in each groove, a rotating cylinder is sleeved on the outer circumferential surface of each third slide rod, and a baffle is fixedly disposed at both ends of each rotating cylinder.

[0013] Preferably, each of the rotating cylinders has a rotating groove on its outer circumferential surface, and each of the third sliding rods has an abutment rod fixedly installed on its outer circumferential surface.

[0014] Preferably, a support frame is fixedly installed on the workbench, a first support plate and a second support plate are fixedly installed on the workbench, a connecting plate is slidably installed on the side of the second support plate near the feeding cylinder, a first screw is rotatably installed on the workbench, the first screw is threadedly connected to the connecting plate, and the connecting plate is fixedly connected to the feeding cylinder.

[0015] Preferably, a sealing ring production apparatus includes the aforementioned sealing ring circumferential cutting structure.

[0016] In the above technical solution, the present invention provides a sealing ring circumferential structure, which has the following beneficial effects: the worm gear drives the turbine to rotate, thereby causing the lifting member to lift the negative pressure plate upward, thereby forming a negative pressure space between the negative pressure plate and the bottom wall of the negative pressure cylinder, so that the sealing ring is tightly adsorbed on each sliding cylinder. By controlling the lifting distance of the negative pressure plate, the adsorption force can be controlled, and no manual clamping of the sealing ring is required. It can be used for sealing rings of different sizes.

[0017] Since the above-mentioned sealing ring circumferential structure has the aforementioned technical effects, the sealing ring production device including the above-mentioned sealing ring circumferential structure should also have the corresponding technical effects. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0019] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram of the feeding mechanism provided in an embodiment of the present invention;

[0021] Figure 3 This is a schematic diagram of the structure of the feeding assembly provided in an embodiment of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the rotating drum provided in an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of the structure of the abutment column provided in an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of the lifting plate provided in an embodiment of the present invention;

[0025] Figure 7 This is a schematic diagram of the suction cup structure provided in an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of the lifting component provided in an embodiment of the present invention;

[0027] Figure 9 This is a schematic diagram of the cutting assembly provided in an embodiment of the present invention;

[0028] Figure 10 Provided for embodiments of the present invention Figure 8 Enlarged view of the structure at point A in the middle.

[0029] Figure 11 This is a schematic diagram of the structure of the contact ball provided in an embodiment of the present invention;

[0030] Explanation of reference numerals in the attached figures:

[0031] 11. Workbench; 12. Support frame; 21. Feeding cylinder; 22. First servo motor; 23. Groove; 24. Rotary drum; 25. Third slide bar; 26. First spring; 27. Rotary groove; 28. Abutment rod; 29. ​​Baffle; 31. Negative pressure cylinder; 32. Second servo motor; 33. Suction cup; 34. Worm gear; 35. Turbine; 351. Rotating shaft; 352. Fixed shaft; 36. Lifting component; 37. Negative pressure plate; 38. Sealed bearing; 41. Hydraulic cylinder; 42. Guide rail; 43. Connecting rod; 44. Lifting plate; 441. Lifting 45. First support plate; 46. Second support plate; 47. First screw; 48. Limiting rod; 49. Connecting plate; 51. Abutment post; 52. Limiting protrusion; 53. Lifting plate; 54. First slider; 55. First sleeve; 56. First sliding rod; 61. Second slider; 62. Second sleeve; 63. Tool holder; 64. Cutting knife; 65. Downward pressure rod; 66. Second spring; 67. Second sliding rod; 71. Sliding cylinder; 72. Sealing component; 721. Abutment ball; 73. Second screw; 74. Third spring; 75. Top plate; Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0033] Please see Figure 1-11 The present invention provides a sealing ring circumferential structure, including a worktable 11, a negative pressure cylinder 31, a worm gear 34, and two turbines 35. The worm gear 34 is rotatably connected to the negative pressure cylinder 31, and both turbines 35 are engaged with the worm gear 34. The invention is characterized by further comprising: a first negative pressure mechanism, which includes two lifting members 36 slidably disposed on the inner wall of the negative pressure cylinder 31, the two lifting members 36 being engaged with the two turbines 35 in a one-to-one correspondence, and a negative pressure plate 37 for forming a negative pressure space inside the negative pressure cylinder 31, the two lifting members 36 being fixedly connected to the negative pressure plate 37; and a second negative pressure mechanism, which includes a plurality of sliding cylinders 71 slidably disposed on the bottom wall of the negative pressure cylinder 31, each sliding cylinder 71 being rotatably disposed with a sealing member 72.

[0034] Specifically: the outer circumferential surface of the negative pressure plate 37 is slidably connected to the inner wall of the negative pressure cylinder 31, the bottom wall of the negative pressure cylinder 31 is rotatably connected to the side wall of the negative pressure cylinder 31, the worm 34 is fixedly connected to the bottom wall of the negative pressure cylinder 31, a sealing bearing 38 is provided at the connection between the worm 34 and the negative pressure plate 37, the inner ring of the sealing bearing 38 is slidably connected to the worm 34, rubber rings are fixedly provided at the inner ring of the sealing bearing 38, the outer circumferential surface of the negative pressure plate 37, the bottom wall of the negative pressure cylinder 31 and the rotatable connection of the negative pressure cylinder 31, a rubber ring is also fixedly provided at the contact position between the bottom wall of the negative pressure cylinder 31 and the slide cylinder 71, and the outer ring of the sealing bearing 38 is fixedly connected to the negative pressure plate 37. The sealing performance of the negative pressure cylinder 31 is ensured by the various rubber rings and the sealing bearing 38.

[0035] Both turbines 35 have coaxially fixed rotating shafts 351 on both sides. The inner wall of the negative pressure cylinder 31 has four fixed shafts 352, each fixed shaft 352 being rotatably connected to each rotating shaft 351. Through the cooperation of the worm gear 34 and the turbine 35, when the worm gear 34 rotates rapidly, the lifting member 36 moves upward slowly. The lifting member 36 is set as a toothed plate that meshes with the corresponding turbine 35. Each sealing member 72 is set as a semi-fan-shaped plate. Rotating the worm gear causes the turbine 35 to rotate, thereby lifting the lifting member 36 upward. The negative pressure plate 37 is located between the bottom wall of the negative pressure cylinder 31 and the lifting member 36. When the lifting member 36 moves upward, it drives the negative pressure plate 37 to move upward, so that a negative pressure space is formed between the negative pressure plate 37 and the bottom wall of the negative pressure cylinder 31. The sealing ring is attracted by the sliding cylinder 71 that is slidably set on the bottom wall of the negative pressure cylinder 31.

[0036] The side of the slide cylinder 71 away from the sealing component 72 is fixedly mounted to the suction cup 33. When the sealing ring is adsorbed onto each slide cylinder 71, the suction cup 33 abuts against the sealing ring to prevent excessive deformation of the sealing ring. The worm gear 34 continues to rotate, causing the negative pressure plate 37 to move upward. At this time, the sealing ring will be tightly adsorbed onto the slide cylinder 71. After the negative pressure plate 37 moves upward a certain distance, the pressure between the negative pressure plate 37 and the bottom wall of the negative pressure cylinder 31 will cause each slide cylinder 71 to move upward. When the slide cylinder 71 moves upward, it will drive each sealing component 72 to rotate, thereby sealing the slide cylinder 71 and forming an independent negative pressure space inside each slide cylinder 71. This prevents the sealing ring from falling off the slide cylinder 71 immediately when the worm gear 34 reverses, making it convenient for the tool to cut the sealing ring.

[0037] In another embodiment of the present invention: a plurality of second screws 73 are fixedly provided on the bottom wall of the negative pressure cylinder 31, and a top plate 75 is fixedly provided on the outer circumferential surface of each slide cylinder 71. Each top plate 75 is sleeved on the second screw 73 in a corresponding manner, and a third spring 74 is fixedly provided between each top plate 75 and the bottom wall of the negative pressure cylinder 31; each sealing member 72 is slidably connected to the second screw 73 in a corresponding manner, and an abutment ball 721 is fixedly provided inside each sealing member 72. The sealing member 72 rotates when the slide cylinder 71 moves upward due to the threaded engagement between the abutment ball 721 and the second screw 73, thereby sealing the slide cylinder 71. Each sealing member 72 corresponds to each top plate 75. The rotating connection is such that each sealing component 72 is equipped with a rubber pad on the side near the slide cylinder 71. The slide cylinder 71 will only move upward after the pressure between the bottom wall of the negative pressure cylinder 31 and the negative pressure plate 37 reaches a certain level through the third spring 74, ensuring that the sealing ring is tightly adsorbed on each slide cylinder 71. When the worm gear 34 reverses, the negative pressure plate 37 moves downward, and the negative pressure between the bottom wall of the negative pressure cylinder 31 and the negative pressure plate 37 decreases. The third spring 74 causes the slide cylinder 71 to move downward, thereby allowing the sealing component 72 to open the slide cylinder 71. When the negative pressure between the bottom wall of the negative pressure cylinder 31 and the negative pressure plate 37 is insufficient to adsorb the sealing ring, the sealing ring falls off the suction cup 33.

[0038] In another embodiment of the present invention: a guide rail 42 is fixedly provided on the worktable 11, and a cutting component and a feeding component are slidably provided on the guide rail 42. A feeding mechanism is also provided on the worktable 11. In use, the sealing ring is placed on the feeding mechanism through the feeding mechanism, and the feeding mechanism is moved to below the suction cup 33 through the guide rail 42 so that the slide cylinder 71 on the suction cup 33 can adsorb the sealing ring on the feeding mechanism. The cutting component is moved to below the negative pressure cylinder 31 through the guide rail 42 so as to cut the sealing ring adsorbed on the slide cylinder 71.

[0039] In another embodiment of the present invention: the feeding assembly includes a first slider 54 slidably connected to the guide rail 42, a first sleeve 55 fixedly disposed on the first slider 54, a first slide rod 56 slidably disposed inside the first sleeve 55, and abutment posts 51 fixedly disposed on both sides of the first slide rod 56. Two lifting plates 44 are fixedly disposed on the worktable 11, and each lifting plate 44 is provided with a lifting groove 441. The lifting plates 44 are located below the negative pressure cylinder 31. When the sealing ring is placed on the first slide rod 56, the first slider 54 is moved towards the negative pressure cylinder 31. When the first slider 54 moves to the two lifting plates 44, the first slide rod 56 abuts against the two abutment posts 51 and the two lifting grooves 441 in a one-to-one correspondence. Through the cooperation of the abutment posts 51 and the lifting grooves 441, the first slide rod 56 is lifted when it moves to the bottom of the negative pressure cylinder 31, so that the sealing ring placed on the first slide rod 56 comes into contact with the suction cup 33, which facilitates the suction cup 33 to adsorb the sealing ring.

[0040] In another embodiment of the present invention: a lifting plate 53 is fixedly provided at the end of the first slide bar 56 away from the first slider 54, and a limiting protrusion 52 is fixedly provided on the lifting plate 53; the sealing ring is lifted by the lifting plate 53, and the sealing ring is limited by the limiting protrusion 52 by fitting the inner ring of the sealing ring onto the limiting protrusion 52.

[0041] In another embodiment of the present invention: the cutting assembly includes a second slider 61 slidably disposed on a guide rail 42, a second sleeve 62 fixedly disposed on the second slider 61, a second slide rod 67 slidably disposed inside the second sleeve 62, a tool holder 63 fixedly disposed at the end of the second slide rod 67 away from the second slider 61, a cutter 64 fixedly disposed on the tool holder 63, and a pressing rod 65 fixedly disposed on the tool holder 63; a second spring 66 is fixedly disposed between the tool holder 63 and the second slide rod 67. When the negative pressure plate 37 moves upward, when the pressure reaches a certain value, the suction cup 33 and the slide cylinder 71 drive the sealing ring to move upward, and the second slider 61 slides to move the second slider 61 below the negative pressure cylinder 31. At this time, the cutter 64 on the second slider 61 will not contact the sealing ring on the suction cup 33.

[0042] Reverse the worm gear 34 to move the negative pressure plate 37 downward, thereby causing each slide cylinder 71 and suction cup 33 to move the sealing ring downward, so that the sealing ring comes into contact with the cutter 64. Since the worm gear 34 is fixedly connected to the bottom wall of the negative pressure cylinder 31, when the worm gear 34 rotates, the bottom wall of the negative pressure cylinder 31, the suction cup 33, and each slide cylinder 71 all rotate around the worm gear 34, so that the cutter 64 can perform a ring cut on the sealing ring adsorbed on the slide cylinder 71. The lower pressure rod 65 is at the same height as the ring cut sealing ring. When the suction cup 33 moves downward, the lower pressure rod 65 abuts against the suction cup 33, and the second spring 66 prevents the cutter 64 from cutting the sealing ring excessively. The second spring 66 can also make the lower pressure rod 65 abut tightly against the suction cup 33, which facilitates the ring cut of the sealing ring.

[0043] In another embodiment of the present invention: the feeding mechanism includes a feeding cylinder 21, and a plurality of grooves 23 are formed on the outer peripheral surface of the feeding cylinder 21. A third slide rod 25 is slidably disposed in each groove 23. A rotating cylinder 24 is sleeved on the outer peripheral surface of each third slide rod 25. A baffle 29 is fixedly disposed at both ends of each rotating cylinder 24. The rotating cylinder 24 is rotatably connected to the lower bottom wall of the groove 23. The third slide rods 25 are slidably disposed in the grooves 23. Both ends of each third slide rod 25 are slidably connected to the feeding cylinder 21. When the feeding mechanism moves to below the feeding cylinder 21, it presses the feeding cylinder 21 down, so that each third slide rod 25 on the feeding cylinder 21 abuts against the lifting plate 53 on the feeding mechanism. The feeding cylinder 21 is pressed down further. Each third slide rod 25 moves upward, driving the rotating drum 24 to rotate. The baffles 29 at both ends of each rotating drum 24 are symmetrically arranged. In the initial state, the baffle 29 below the rotating drum 24 is inside the feeding drum 21, preventing the sealing ring inside the feeding drum 21 from falling out. Pressing down on the third slide rod 25 causes the baffle 29 above the rotating drum 24 to rotate inside the feeding drum 21, while the baffle 29 below the rotating drum 24 rotates outside the feeding drum 21. This causes the lowest sealing ring inside the feeding drum 21 to fall onto the lifting plate 53, while the other sealing rings are blocked by the baffles 29, thus completing the feeding process.

[0044] In another embodiment of the present invention: each rotating cylinder 24 has a rotating groove 27 on its outer peripheral surface, and each third sliding rod 25 has a fixed abutment rod 28 on its outer peripheral surface; each abutment rod 28 extends out of each rotating groove 27 in a corresponding manner, and through the cooperation of the abutment rod 28 and the rotating groove 27, the rotating cylinder 24 rotates when the third sliding rod 25 moves up and down; a ring is fixedly provided on the outer peripheral surface of the third sliding rod 25, and a first spring 26 is fixedly provided on each ring and the top wall of each groove 23 in a corresponding manner, so that the third sliding rod 25 rotates through the first spring 26. When the third slide rod 25 is not in contact with the lifting plate 53, it moves downward, thereby driving the rotating drum 24 to rotate, so that each baffle 29 returns to its original position and blocks the sealing ring again. The length of the third slide rod 25 extending from the bottom wall of the upper material cylinder 21 is equal to twice the height of the sealing ring, and the height of the rotating groove 27 is equal to the height of the sealing ring. When the third slide rod 25 slides upward to its limit, the length of the third slide rod 25 extending from the upper material cylinder 21 is equal to the height of the sealing ring. At this time, the two baffles 29 on each rotating drum 24 rotate 180° around the corresponding third slide rod 25.

[0045] In another embodiment of the present invention: a support frame 12 is fixedly installed on the workbench 11, a first support plate 45 and a second support plate 46 are fixedly installed on the workbench 11, a connecting plate 49 is slidably installed on the side of the second support plate 46 near the feeding cylinder 21, a first screw 47 is rotatably installed on the workbench 11, the first screw 47 is threadedly connected to the connecting plate 49, and the connecting plate 49 is fixedly connected to the feeding cylinder 21; the first support plate 45 is fixedly connected to the negative pressure cylinder 31, a first servo motor 22 and a second servo motor 32 are fixedly installed on the support frame 12, and two limiting rods 48 are fixedly installed on the workbench 11, both of which are slidably connected to the connecting plate 49. The first servo motor 22 drives the first screw 47 to rotate, thereby driving the feeding cylinder 21 to move up and down, so that each third sliding rod 25 abuts against the lifting plate 53, so that the sealing ring in the feeding cylinder 21 is placed on the lifting plate 53, and the output end of the second servo motor 32... The worm gear 34 is fixedly connected to the first slider 54, thereby driving the worm gear 34 to rotate in both directions, thus completing the adsorption and release of the sealing ring. A connecting rod 43 is fixedly provided between the first slider 54 and the second slider 61, so that the first slider 54 and the second slider 61 can move synchronously through the connecting rod 43. A hydraulic cylinder 41 is fixedly provided on the side of the second slider 61 away from the first slider 54. The movement of the second slider 61 is controlled by the hydraulic cylinder 41, thereby controlling the movement of the first slider 54. When the hydraulic cylinder 41 is fully retracted, the first slider 54 moves to the bottom of the negative pressure cylinder 31. When the hydraulic cylinder 41 is fully extended, the first slider 54 moves to the bottom of the feeding cylinder 21, and the second slider 61 moves to the bottom of the negative pressure cylinder 31, thus completing the feeding and sealing ring circumferential cutting work synchronously, greatly saving time. A controller is fixedly provided on the worktable 11, which controls the start and stop of the first servo motor 22, the second servo motor 32 and the hydraulic cylinder 41.

[0046] The present invention also provides a sealing ring production apparatus, including the aforementioned sealing ring circumferential cutting structure. Since the aforementioned sealing ring circumferential cutting structure has the above-mentioned technical effects, the sealing ring production apparatus including this sealing ring circumferential cutting structure should also have corresponding technical effects.

[0047] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A sealing ring circumferential structure, comprising a worktable (11), a negative pressure cylinder (31), a worm gear (34), and two turbines (35), wherein the worm gear (34) is rotatably connected to the top wall of the negative pressure cylinder (31), and both turbines (35) mesh with the worm gear (34), characterized in that, Also includes: The first negative pressure mechanism includes two lifting members (36) slidably disposed on the inner wall of the negative pressure cylinder (31), the two lifting members (36) meshing with the two turbines (35) in a one-to-one correspondence, and also includes a negative pressure plate (37) for forming a negative pressure space inside the negative pressure cylinder (31), the two lifting members (36) being fixedly connected to the negative pressure plate (37); The second negative pressure mechanism includes a plurality of slide cylinders (71) slidably disposed on the bottom wall of the negative pressure cylinder (31), and each slide cylinder (71) is rotatably provided with a sealing element (72).

2. The sealing ring circumferential structure according to claim 1, characterized in that, The bottom wall of the negative pressure cylinder (31) is fixedly provided with a plurality of second screws (73), and the outer circumferential surface of each of the slide cylinders (71) is fixedly provided with a top plate (75). Each top plate (75) is sleeved on the second screw (73) in a corresponding manner, and a third spring (74) is fixedly provided between each top plate (75) and the bottom wall of the negative pressure cylinder (31).

3. The sealing ring circumferential structure according to claim 1, characterized in that, The worktable (11) is fixedly provided with a guide rail (42), and a cutting component and a feeding component are slidably provided on the guide rail (42). The worktable (11) is also provided with a feeding mechanism.

4. The sealing ring circumferential structure according to claim 3, characterized in that, The feeding assembly includes a first slider (54) slidably connected to the guide rail (42), a first sleeve (55) is fixedly provided on the first slider (54), a first slide rod (56) is slidably provided inside the first sleeve (55), and abutment posts (51) are fixedly provided on both sides of the first slide rod (56). Two lifting plates (44) are fixedly provided on the worktable (11), and each of the lifting plates (44) is provided with a lifting groove (441).

5. The sealing ring circumferential structure according to claim 4, characterized in that, A lifting plate (53) is fixedly provided at the end of the first slide bar (56) away from the first slider (54), and a limiting protrusion (52) is fixedly provided on the lifting plate (53).

6. The sealing ring circumferential structure according to claim 5, characterized in that, The cutting assembly includes a second slider (61) slidably disposed on a guide rail (42), a second sleeve (62) fixedly disposed on the second slider (61), a second slide rod (67) slidably disposed inside the second sleeve (62), a tool holder (63) fixedly disposed at one end of the second slide rod (67) away from the second slider (61), a cutting blade (64) fixedly disposed on the tool holder (63), and a downward pressure rod (65) fixedly disposed on the tool holder (63).

7. The sealing ring circumferential structure according to claim 6, characterized in that, The feeding mechanism includes a feeding cylinder (21), and the outer circumferential surface of the feeding cylinder (21) is provided with a plurality of grooves (23). A third slide rod (25) is slidably arranged in each groove (23). A rotating cylinder (24) is sleeved on the outer circumferential surface of each third slide rod (25). A baffle (29) is fixedly arranged at both ends of each rotating cylinder (24).

8. The sealing ring circumferential structure according to claim 7, characterized in that, Each of the rotating cylinders (24) has a rotating groove (27) on its outer circumferential surface, and each of the third sliding rods (25) has an abutment rod (28) fixedly installed on its outer circumferential surface.

9. The sealing ring circumferential structure according to claim 8, characterized in that, A support frame (12) is fixedly installed on the workbench (11). A first support plate (45) and a second support plate (46) are fixedly installed on the workbench (11). A connecting plate (49) is slidably installed on the side of the second support plate (46) near the feed cylinder (21). A first screw (47) is rotatably installed on the workbench (11). The first screw (47) is threadedly connected to the connecting plate (49). The connecting plate (49) is fixedly connected to the feed cylinder (21).

10. A sealing ring production apparatus, characterized in that, Includes the sealing ring circumferential structure as described in any one of claims 1-9.

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