Sealing device for intelligent air cylinder

Abstract

The invention relates to the technical field of sealing equipment, in particular to a sealing device for an intelligent air cylinder. The technical problems that when an intelligent air cylinder is sealed in an existing mode, air pressure and sealing force are difficult to balance, sealing performance is wasted, unnecessary abrasion is generated, the service life is short, friction force changes along with sealing force adjustment, the balance speed is affected, sealing efficiency is low, and the sealing effect is poor are solved. A sealing device for an intelligent air cylinder comprises the intelligent air cylinder provided with a first air hole and a second air hole. A torsion rod rotates to enable an extrusion block to extrude a sleeve rod to move, the sleeve rod extrudes a pressure applying spring to enable a sealing ring to apply pressure to the inner wall of an intelligent air cylinder through a pressure applying frame, the sleeve rod moves to drive a piston ring to move, and the piston ring moves to extrude air in an air storage cylinder into a cavity of the sealing ring through an air conveying pipe to generate air pressure; and the contact area between the sealing ring and the inner wall of the intelligent cylinder is increased due to deformation, so that the sealing effect of the intelligent cylinder during use is obviously enhanced.

Description

Technical Field

[0001] The invention relates to the technical field of sealing equipment, and in particular to a sealing device for an intelligent cylinder. Background Art

[0002] A cylinder is a mechanical device that uses compressed air as a power source to drive a piston to perform linear motion. It is used to perform various automated control tasks. In order to ensure the sealing and normal operation of the cylinder, the edge of the piston of a traditional cylinder is often stuck in sealing rings with different degrees of sealing. This method is not flexible enough and the sealing effect is not good. Improvements in the existing technology usually apply an outward force to the sealing ring and inflate the sealing ring to cause the sealing ring to deform and increase the contact area with the inner wall of the cylinder to achieve effective sealing.

[0003] Due to the change between the air pressure and the sealing effect, there is a critical value of the equilibrium state between the air pressure and the sealing force. When the existing sealing device seals the intelligent cylinder, it is not convenient to accurately adjust the pressure of the sealing ring according to the stable air pressure, resulting in a waste of the sealing performance of the sealing ring. At the same time, the sealing ring may cause unnecessary wear due to the large contact surface, which in turn leads to a short service life of the sealing ring. In addition, there is friction between the sealing ring and the inner wall of the intelligent cylinder. When the sealing force of the sealing ring is adjusted, the friction will also change, affecting the equilibrium speed between the sealing force and the air pressure, resulting in low sealing efficiency and thus poor sealing effect. Summary of the invention

[0004] In order to overcome the above-mentioned shortcomings, the present invention provides a sealing device for an intelligent cylinder, which can adjust the sealing force according to the air pressure, reduce unnecessary wear of the sealing ring, significantly improve the service life of the sealing ring, and can coat the surface of the sealing ring with lubricating liquid when adjusting the sealing force, thereby directly reducing the friction force and avoiding changes in the friction force affecting the adjustment rate, thereby enhancing the sealing effect of the intelligent cylinder.

[0005] The technical solution is as follows: A sealing device for an intelligent cylinder, comprising:

[0006] An intelligent cylinder having an air hole 1 and an air hole 2 respectively;

[0007] An outer frame with a liquid hole is fixedly connected to one side of the intelligent cylinder;

[0008] A sliding rod is slidably connected to the smart cylinder;

[0009] A slide plate is fixedly connected to one end of the slide bar and has two sets of arc grooves;

[0010] A sealing assembly is arranged on the slide plate;

[0011] A pressure mechanism is arranged on the slide plate, the outer frame and the intelligent cylinder;

[0012] The inflation mechanism is arranged on the slide plate and the pressure applying mechanism.

[0013] Optionally, the sealing assembly includes: four pressure racks slidably connected to the slide plate; a sealing ring which is sleeved on the outer side of the slide plate and has a cavity, and the inner side of the sealing ring is in contact with the four pressure racks.

[0014] Optionally, the pressure mechanism includes: a sliding ring slidably connected between two groups of arc grooves; an extrusion block fixed to the sliding ring, on which four inclined surfaces are evenly spaced; a torsion bar rotatably connected between the outer frame and one side of the intelligent cylinder; a rotating frame fixed to one end of the torsion bar, the two sides of the rotating frame are respectively rotatably connected to the two sides of the inner wall of the intelligent cylinder, and the sliding ring is slidably connected to the rotating frame; sleeve rods respectively slidably connected to the ends of the four pressure frames that are close to each other, and the ends of the four sleeve rods that are close to each other are respectively in contact with the four inclined surfaces of the extrusion block; and pressure springs are connected between the four sleeve rods and the four pressure frames.

[0015] Optionally, the inflation mechanism includes: four air cylinders fixedly connected to the slide plate, four pressure racks and four sleeve rods are slidingly connected to the four air cylinders respectively; air pipes are respectively connected to one side of the four air cylinders, and the other ends of the four air pipes pass through the four pressure racks and are connected to the cavity of the sealing ring; piston rings are respectively fixed to the four sleeve rods, and the four piston rings are slidingly connected to the inner walls of the four air cylinders respectively.

[0016] Optionally, two communication holes are formed on a side of the smart cylinder close to the outer frame.

[0017] Optionally, a rotation groove is provided on the torsion bar.

[0018] Optionally, an adjustment mechanism is also included for adjusting the sealing force according to the air pressure in the smart cylinder, and is arranged on the smart cylinder and the torsion bar. The adjustment mechanism includes: two piston cylinders symmetrically fixed to one side of the smart cylinder, and the two piston cylinders are connected to the inside of the smart cylinder through two connecting holes respectively; piston rods 1 are respectively slidably connected to the two piston cylinders; compression springs are respectively connected between the two piston rods 1 and the two piston cylinders 1; clamping blocks are respectively fixed to the two piston rods 1; and an extrusion ring slidably connected to the rotating groove, and the outer sides of the extrusion ring are respectively in close contact with the two clamping blocks, and the extrusion ring is made of rubber.

[0019] Optionally, a filling mechanism is also included, which is used to fill the sealing ring with lubricating liquid when the air pressure inside the intelligent cylinder is relatively high, and is arranged on the outer frame and the card block. The filling mechanism includes: two piston cylinders 2 fixedly connected to one side of the inner wall of the outer frame; a fixing frame fixedly connected to one of the card blocks; two piston rods 2 fixedly connected to the bottom of the fixing frame, and the two piston rods 2 are respectively slidably connected to the two piston cylinders 2; and a connecting component arranged on the outer frame, the piston cylinder 2 and the intelligent cylinder.

[0020] Optionally, an annular groove is opened in one side of the smart cylinder, a plurality of small holes are opened between the annular groove and the inside of the smart cylinder, and two liquid passage grooves are connected between the annular groove and the outside of the smart cylinder.

[0021] Optionally, the connecting component includes: two one-way valves 1, respectively connected to the upper part of one side of two piston cylinders 2; a bifurcated tube connected between the two one-way valves, the top of the bifurcated tube is connected to the liquid hole; two one-way valves 2, respectively connected to the lower part of one side of two piston cylinders 2, for a total of two; two one-way valves 3, respectively connected to the two liquid grooves, for a total of two; an infusion tube is connected between the one-way valve 2 and the one-way valve 3 on the same side, for a total of two.

[0022] Beneficial effects: 1. The present invention drives the rotating frame, the sliding ring and the extrusion block to rotate along the arc groove through the rotation of the torsion bar. The four inclined surfaces of the extrusion block will respectively squeeze the four sleeve rods to move away from each other, and the four sleeve rods will respectively squeeze the four pressure springs. The forces of the four pressure springs will be applied to the inner side of the sealing ring through the four pressure frames, so that the sealing ring presses the inner wall of the intelligent cylinder outward, and the sealing ring is deformed and the contact area between the inner wall of the intelligent cylinder is increased; the movement of the sleeve rod drives the movement of the piston ring, and the movement of the piston ring squeezes the gas in the gas storage cylinder into the cavity of the sealing ring through the gas pipe to generate air pressure, so that the contact area between the sealing ring and the inner wall of the intelligent cylinder is further increased, which significantly enhances the sealing effect of the intelligent cylinder when it is in use.

[0023] 2. It is possible to establish a connection between the air pressure and the sealing force without affecting the normal use of the intelligent cylinder. The pressure of the sealing ring can be accurately adjusted by stabilizing the air pressure, so that the sealing force of the sealing ring and the pressure of the air pressure are balanced, avoiding the waste of the sealing performance of the sealing ring, reducing the unnecessary wear of the sealing ring due to the large contact surface, and significantly improving the service life of the sealing ring, thereby further enhancing the sealing performance of the intelligent cylinder during use.

[0024] 3. The movement of the block drives the piston rod 2 to squeeze the lubricating fluid inside the piston cylinder 2. The reset of the block drives the piston rod 2 to draw the external lubricating fluid into the piston cylinder 2. The squeezed lubricating fluid passes through the one-way valve 2, the infusion tube, the one-way valve 3, the liquid groove, the ring groove and the small hole in turn to be coated on the outer surface of the sealing ring, directly reducing the friction between the sealing ring and the inner wall of the intelligent cylinder, avoiding the influence of the change of friction on the balance speed of the sealing force and the air pressure, and improving the sealing efficiency, thereby further enhancing the sealing effect of the intelligent cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0026] Figure 2 It is a schematic diagram of the cross-sectional three-dimensional structure of the present invention.

[0027] Figure 3 It is a schematic diagram of a partially cutaway three-dimensional structure of the intelligent cylinder of the present invention.

[0028] Figure 4 It is a schematic diagram of a partially disassembled three-dimensional structure of the present invention.

[0029] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the present invention.

[0030] Figure 6 It is a schematic diagram of a partially cutaway three-dimensional structure of a skateboard of the present invention.

[0031] Figure 7 It is a schematic diagram of the disassembled three-dimensional structure of the slide plate, the sealing assembly and the sliding ring of the present invention.

[0032] Figure 8 It is a partially cutaway three-dimensional structural schematic diagram of the inflation mechanism and the sealing assembly of the present invention.

[0033] Fig. 9 It is a partial cross-sectional three-dimensional structural schematic diagram of the pressure frame, sleeve rod and pressure spring of the present invention.

[0034] Fig.10 It is a schematic diagram of a partially disassembled three-dimensional structure of the pressure mechanism and the pressure frame of the present invention.

[0035] Fig.11 It is a schematic diagram of a partially disassembled three-dimensional structure of the inflation mechanism and sleeve rod of the present invention.

[0036] Fig.12 It is a partial cross-sectional three-dimensional structural schematic diagram of the adjustment mechanism and the filling mechanism of the present invention.

[0037] Fig.13 It is a partial three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0038] Fig.14 It is a partial cross-sectional three-dimensional structural schematic diagram of the adjustment mechanism of the present invention.

[0039] Fig.15 It is a schematic diagram of a partially disassembled three-dimensional structure of the adjustment mechanism of the present invention.

[0040] Fig.16 It is a partial three-dimensional structural schematic diagram of the filling mechanism of the present invention.

[0041] Fig.17 It is a partially cutaway three-dimensional structural schematic diagram of the filling mechanism of the present invention.

[0042] Fig.18 It is a partial cross-sectional three-dimensional structural schematic diagram of the connecting component and the intelligent cylinder of the present invention.

[0043] The meanings of the reference numerals in the figure are as follows: 1: intelligent cylinder, 101: air hole 1, 102: air hole 2, 2: outer frame, 201: liquid hole, 3: sliding rod, 4: sliding plate, 401: arc groove, 51: pressure frame, 52: sealing ring, 61: sliding ring, 62: extrusion block, 63: torsion bar, 64: rotating frame, 65: sleeve rod, 66: pressure spring, 71: air storage cylinder, 72: air pipe, 73: piston ring, 8 01: connecting hole, 802: rotating groove, 81: piston cylinder one, 82: piston rod one, 83: compression spring, 84: block, 85: extrusion ring, 91: piston cylinder two, 92: fixing frame, 93: piston rod two, 9401: ring groove, 9402: small hole, 9403: liquid groove, 941: one-way valve one, 942: bifurcated tube, 943: one-way valve two, 944: one-way valve three, 945: infusion tube. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0045] Embodiment 1: A sealing device for an intelligent cylinder, such as Figure 1-Figure 11 As shown, including:

[0046] An intelligent cylinder 1 having an air hole 101 and an air hole 2 102;

[0047] An outer frame 2 having a liquid hole 201 is connected to one side of the smart cylinder 1 by bolts. The liquid hole 201 is located at the top of the side of the outer frame 2 away from the smart cylinder 1. The first air hole 101 is located at the top of the side of the smart cylinder 1 away from the outer frame 2. The second air hole 102 is located at the top of the side of the smart cylinder 1 close to the outer frame 2.

[0048] The slide rod 3 is slidably connected to the smart cylinder 1, and the connecting head of the slide rod 3 is located outside the smart cylinder 1;

[0049] The slide plate 4 is connected to one end of the slide bar 3 close to the outer frame 2 by bolts. The slide plate 4 is located in the smart cylinder 1. The slide plate 4 divides the interior of the smart cylinder 1 into two chambers. The air hole 101 and the air hole 2 102 are respectively connected to the two chambers of the smart cylinder 1. Two groups of arc grooves 401 are opened on the slide plate 4. Two arc grooves 401 in the same direction arranged on opposite surfaces of the slide plate 4 form a group, and there are four arc grooves 401 in total.

[0050] A sealing component, used for preliminarily sealing the connection between the two cavities in the intelligent cylinder 1, and arranged on the slide plate 4;

[0051] A pressure mechanism, used to apply pressure to the sealing component to achieve further sealing, is provided on the slide plate 4, the outer frame 2 and the intelligent cylinder 1;

[0052] The inflation mechanism is used to inflate the sealing component to achieve further sealing, and is arranged on the slide plate 4 and the pressure mechanism.

[0053] The sealing assembly includes: four pressure frames 51 slidably connected to the slide plate 4 and arranged at even intervals; a sealing ring 52 which is sleeved on the outside of the slide plate 4 and has a cavity, and is used to initially seal the connection between the two cavities in the intelligent cylinder 1. The inner side of the sealing ring 52 is in contact with the four pressure frames 51, and the pressure frames 51 are used to apply pressure to the sealing ring 52 toward the outside.

[0054] The pressure mechanism includes: a sliding ring 61 slidably connected between two groups of arc grooves 401; an extrusion block 62 welded on the sliding ring 61, located in the slide plate 4, and four inclined surfaces are evenly spaced on the extrusion block 62; a torsion bar 63 rotatably connected between the outer frame 2 and one side of the intelligent cylinder 1, which can be twisted manually; a rotating frame 64 welded to one end of the torsion bar 63, and the two sides of the rotating frame 64 are respectively rotatably connected to the two sides of the inner wall of the intelligent cylinder 1, and the sliding ring 61 is slidably connected to the rotating frame 64; sleeve rods 65 are respectively slidably connected to the ends of the four pressure frames 51 that are close to each other, and the ends of the four sleeve rods 65 that are close to each other are respectively in contact with the four inclined surfaces of the extrusion block 62, and the four inclined surfaces of the extrusion block 62 are respectively used to squeeze the four sleeve rods 65; pressure springs 66 are connected between the four sleeve rods 65 and the four pressure frames 51, and the pressure springs 66 are used to apply pressure to the pressure frames 51.

[0055] The inflation mechanism includes: four air cylinders 71 welded to the slide plate 4 and arranged at even intervals, four pressure frames 51 and four sleeve rods 65 are respectively slidably connected to the four air cylinders 71; air pipes 72 respectively connected to one side of the four air cylinders 71, and the other ends of the four air pipes 72 respectively pass through the four pressure frames 51 and are connected to the cavity of the sealing ring 52; piston rings 73 respectively clamped on the four sleeve rods 65, and the four piston rings 73 are respectively slidably connected to the inner walls of the four air cylinders 71, and the piston rings 73 are used to input the air in the air cylinder 71 into the cavity of the sealing ring 52 through the air pipe 72.

[0056] Before using the smart cylinder 1, the staff first connects the external air pump to the air hole 1 101 and the air hole 2 102 through two pipes respectively; when it is necessary to push the slide bar 3 of the smart cylinder 1 to extend outward, the air pump connects one of the pipes to fill the gas into the chamber of the smart cylinder 1 close to the outer frame 2 through the air hole 2 102. Under the initial sealing effect of the sealing ring 52, the filled gas generates air pressure to squeeze the slide plate 4, the sealing assembly, the pressure mechanism (except the torsion bar 63 and the rotating frame 64) and the inflation mechanism together to move in the direction away from the outer frame 2, thereby pushing the gas in the other chamber of the smart cylinder 1 through the air hole 101 and the other pipe. The slide plate 4 moves to drive the slide bar 3 to extend out of the smart cylinder 1; when the slide bar 3 that needs to be pushed out of the smart cylinder 1 is retracted inward, the air pump is connected to another pipeline to fill the gas into another chamber of the smart cylinder 1 through the air hole 101, so that the slide bar 3 is retracted into the inside of the smart cylinder 1, and the gas in the chamber of the smart cylinder 1 close to the outer frame 2 will be squeezed out through the air hole 2 102 and the pipeline. In this way, the smart cylinder 1 can be used by switching the connection of the air pump; before using the smart cylinder 1, the staff can first twist the torsion bar 63 to rotate a certain angle, and the rotation of the torsion bar 63 drives the rotating frame 64, the sliding ring 61 and the extrusion block 62 to move along the arc groove 401 rotates, the four inclined surfaces of the extrusion block 62 will respectively squeeze the four sleeve rods 65 to move away from each other, and the four sleeve rods 65 will squeeze the four pressure springs 66 respectively. The forces of the four pressure springs 66 will be applied to the inner side of the sealing ring 52 through the four pressure frames 51, so that the sealing ring 52 presses the inner wall of the intelligent cylinder 1 outward, and the sealing ring 52 is deformed and the contact area between the inner wall of the intelligent cylinder 1 is increased; the movement of the sleeve rod 65 drives the piston ring 73 to move, and the movement of the piston ring 73 squeezes the gas in the gas storage cylinder 71 into the cavity of the sealing ring 52 through the gas pipe 72 to generate air pressure, so that the sealing ring 52 and the inner wall of the intelligent cylinder 1 are pressed against each other. The contact surface between them is further increased, which significantly enhances the sealing effect of the intelligent cylinder 1 when it is used; after the intelligent cylinder 1 is used, the staff twists the torsion bar 63 in the direction to reset it, and the torsion bar 63 resets to drive the rotating frame 64, the sliding ring 61 and the extrusion block 62 to rotate in the opposite direction to reset, and the pressure spring 66 resets to drive the sleeve rod 65 and the piston ring 73 to reset together, and the pressure spring 66 resets and no longer applies pressure to the sealing ring 52 through the pressure frame 51, and the piston ring 73 resets to draw the gas input in the sealing ring 52 back into the air storage cylinder 71 through the air supply pipe 72, and then the staff removes the external air pump from the air hole 101 and the air hole 2 102 through the two pipes.

[0057] Embodiment 2: Based on embodiment 1, Figure 12-16 As shown, two communication holes 801 are symmetrically opened on one side of the intelligent cylinder 1 close to the outer frame 2 .

[0058] The torsion bar 63 is provided with a rotation groove 802 .

[0059] It also includes an adjustment mechanism for adjusting the sealing force according to the air pressure in the smart cylinder 1, and is arranged on the smart cylinder 1 and the torsion bar 63. The adjustment mechanism includes: two piston cylinders 81 symmetrically connected to one side of the smart cylinder 1 by bolts, and the two piston cylinders 81 are connected to the inside of the smart cylinder 1 through two connecting holes 801 respectively, and the two piston cylinders are both located in the outer frame 2; piston rods 82 respectively connected to the two piston cylinders 81 in a sliding manner; compression springs 83 are respectively connected between the two piston rods 82 and the two piston cylinders 81; blocks 84 respectively welded to the two piston rods 82 are symmetrically arranged; an extrusion ring 85 slidably connected to the rotating groove 802, used for extruding the rotating groove 802 to rotate the torsion bar 63, and the outer sides of the extrusion ring 85 are in close contact with the two blocks 84 respectively, and the extrusion ring 85 is made of rubber.

[0060] Before using the smart cylinder 1, the staff twists the torsion bar 63 to rotate, which will drive the extrusion ring 85 to rotate through the rotating groove 802. When the gas is pumped into the chamber of the smart cylinder 1 close to the outer frame 2, under the action of air pressure, part of the gas will squeeze the piston rod 82 through the connecting hole 801 to move a distance away from the smart cylinder 1, and the compression spring 83 will be partially compressed. The movement of the piston rod 82 drives the block 84 and the extrusion ring 85 to move together. Since the extrusion ring 85 is made of rubber, the block 84 is in close contact with the extrusion ring 85, and the rotating groove 802 is difficult to rotate the extrusion ring 85 in a passive state. Then, the extrusion ring 85 moves a certain distance, which will cause the torsion bar 63 to rotate in the opposite direction by a certain angle through the extrusion rotating groove 802. The torsion bar 63 rotates in the opposite direction by a certain angle, which reduces the pressure of the sealing ring 52 on the inner wall of the smart cylinder 1 to a certain extent, thereby making the sealing ring 52 and the smart cylinder 1 The contact surface of the inner wall is reduced to a certain extent. If the air pressure decreases at this time, it means that the sealing degree of the sealing ring 52 is not enough. The reduction of air pressure causes the compression spring 83 to reset a certain distance, driving the piston rod 82 to reset a certain distance, and the extrusion ring 85 to reset a certain distance, driving the torsion bar 63 to rotate forward a certain angle, thereby allowing the sealing ring 52 to enhance the contact surface to a certain extent again until the air pressure stabilizes. In this way, without affecting the normal use of the intelligent cylinder 1, a connection is established between the air pressure and the sealing strength, and the pressure of the sealing ring 52 is accurately adjusted through the stability of the air pressure, so that the sealing strength of the sealing ring 52 and the pressure of the air pressure are balanced, thereby avoiding wasting the sealing performance of the sealing ring 52, reducing unnecessary wear of the sealing ring 52 caused by the excessive contact surface, and significantly improving the service life of the sealing ring 52, thereby further enhancing the sealing performance of the intelligent cylinder 1 during use.

[0061] Embodiment 3: Based on Embodiment 2, Figure 12-Figure 18As shown, a filling mechanism is also included, which is used to fill the sealing ring 52 with lubricating fluid when the internal air pressure of the intelligent cylinder 1 is relatively high, and is arranged on the outer frame 2 and the block 84. The filling mechanism includes: two piston cylinders 91 connected to one side of the inner wall of the outer frame 2 by bolts, which are symmetrically arranged; a fixing frame 92 welded to one of the blocks 84; two piston rods 93 welded to the bottom of the fixing frame 92, which are symmetrically arranged, and the two piston rods 93 are respectively slidably connected to the two piston cylinders 91; and a connecting component arranged on the outer frame 2, the piston cylinder 91 and the intelligent cylinder 1.

[0062] An annular groove 9401 is opened in one side of the smart cylinder 1, and a plurality of small holes 9402 are opened between the annular groove 9401 and the inside of the smart cylinder 1. The annular groove 9401 is connected to the inside of the smart cylinder 1 through the small holes 9402. Two liquid grooves 9403 are connected between the annular groove 9401 and the outside of the smart cylinder 1. The annular groove 9401 is connected to the outside of the smart cylinder 1 through the liquid grooves 9403.

[0063] The connecting component includes: two one-way valves 941, which are respectively connected to the upper part of one side of two piston cylinders 91; a bifurcated tube 942 is connected between the two one-way valves, and the top of the bifurcated tube 942 is connected to the liquid hole 201; two one-way valves 943 are respectively connected to the lower part of one side of two piston cylinders 91, and a total of two; two one-way valves 944 are respectively connected to the two liquid grooves 9403, and a total of two infusion tubes 945 are connected between the one-way valve 943 and the one-way valve 944 on the same side.

[0064] When adjusting the sealing strength of the sealing ring 52, the friction between the sealing ring 52 and the inner wall of the smart cylinder 1 will also change. At first, the interior of the piston cylinder 91 is filled with lubricating liquid, and the gas pumped into the smart cylinder 1 passes through the small hole 9402, the ring groove 9401 and the liquid groove 9403 in turn and is blocked by the one-way valve 944. Before using the smart cylinder 1, the staff first connects the lubricating liquid to the liquid hole 201 through a pipeline. When the block 84 moves away from the smart cylinder 1, it will drive the fixing frame 92 and the piston rod 93 to move together. The piston rod 93 moves to squeeze the lubricating liquid inside the piston cylinder 91. When the air pressure becomes smaller The reset of the block 84 drives the reset of the piston rod 93, and the reset of the piston rod 93 draws the lubricating fluid into the piston cylinder 91 through the one-way valve 941 and the bifurcated tube 942. In this way, the squeezed lubricating fluid passes through the one-way valve 943, the infusion tube 945, the one-way valve 944, the liquid groove 9403, the annular groove 9401 and the small hole 9402 in sequence and is coated on the outer surface of the sealing ring 52, directly reducing the friction between the sealing ring 52 and the inner wall of the intelligent cylinder 1, avoiding the influence of the change of friction on the balance speed of the sealing force and the air pressure, and improving the sealing efficiency, thereby further enhancing the sealing effect of the intelligent cylinder 1.

[0065] The embodiments of the present invention are described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the enlightenment of the present invention, ordinary technicians in this field can also make many forms without departing from the scope of protection of the purpose of the present invention and the claims, which all fall within the protection of the present invention.

Claims

1. A sealing device for an intelligent cylinder, characterized in that: include: An intelligent cylinder (1) having a first air hole (101) and a second air hole (102); An outer frame (2) having a liquid hole (201) is fixedly connected to one side of the intelligent cylinder (1); A sliding rod (3) is slidably connected to the intelligent cylinder (1); A slide plate (4) is fixedly connected to one end of the slide bar (3), and two groups of arc grooves (401) are formed on the slide plate (4); A sealing assembly is arranged on the slide plate (4); A pressure-applying mechanism is arranged on the slide plate (4), the outer frame (2) and the intelligent cylinder (1); The inflation mechanism is arranged on the slide plate (4) and the pressure applying mechanism.

2. The sealing device for an intelligent cylinder according to claim 1, characterized in that: The sealing assembly comprises: four pressure frames (51) slidably connected to the slide plate (4); a sealing ring (52) sleeved on the outside of the slide plate (4) and having a cavity, the inner side of the sealing ring (52) being in contact with the four pressure frames (51).

3. The sealing device for an intelligent cylinder according to claim 2, characterized in that: The pressure mechanism comprises: a sliding ring (61) slidably connected between two groups of arc grooves (401); an extrusion block (62) fixedly connected to the sliding ring (61), and four inclined surfaces are evenly spaced on the extrusion block (62); a torsion bar (63) rotatably connected between the outer frame (2) and one side of the intelligent cylinder (1); a rotating frame (64) fixedly connected to one end of the torsion bar (63), and the two sides of the rotating frame (64) are respectively rotatably connected to the two sides of the inner wall of the intelligent cylinder (1), and the sliding ring (61) is slidably connected to the rotating frame (64); sleeve rods (65) are respectively slidably connected to the ends of the four pressure frames (51) close to each other, and the ends of the four sleeve rods (65) close to each other are respectively in contact with the four inclined surfaces of the extrusion block (62); and pressure springs (66) are respectively connected between the four sleeve rods (65) and the four pressure frames (51).

4. The sealing device for an intelligent cylinder according to claim 3, characterized in that: The inflation mechanism comprises: four air storage cylinders (71) fixedly connected to the slide plate (4); four pressure racks (51) and four sleeve rods (65) are respectively connected to the four air storage cylinders (71) in a sliding manner; air delivery pipes (72) respectively connected to one side of the four air storage cylinders (71); the other ends of the four air delivery pipes (72) respectively pass through the four pressure racks (51) and are connected to the cavity of the sealing ring (52); and piston rings (73) respectively fixedly connected to the four sleeve rods (65); the four piston rings (73) are respectively connected to the inner walls of the four air storage cylinders (71) in a sliding manner.

5. The sealing device for an intelligent cylinder according to claim 4, characterized in that: Two communication holes (801) are formed on one side of the intelligent cylinder (1) close to the outer frame (2).

6. The sealing device for an intelligent cylinder according to claim 5, characterized in that: The torsion bar (63) is provided with a rotation groove (802).

7. The sealing device for an intelligent cylinder according to claim 6, characterized in that: The invention also comprises an adjustment mechanism for adjusting the sealing force according to the air pressure in the intelligent cylinder (1), and is arranged on the intelligent cylinder (1) and the torsion bar (63), wherein the adjustment mechanism comprises: two piston cylinders (81) symmetrically fixed to one side of the intelligent cylinder (1), wherein the two piston cylinders (81) are respectively connected to the inside of the intelligent cylinder (1) through two connecting holes (801); piston rods (82) respectively connected to the two piston cylinders (81) in a sliding manner; compression springs (83) are respectively connected between the two piston rods (82) and the two piston cylinders (81); clamping blocks (84) respectively fixed to the two piston rods (82); and an extrusion ring (85) slidably connected to the rotating groove (802), wherein the outer sides of the extrusion ring (85) are respectively in close contact with the two clamping blocks (84), and the extrusion ring (85) is made of rubber.

8. The sealing device for an intelligent cylinder according to claim 7, characterized in that: The intelligent cylinder (1) also includes a filling mechanism for filling the sealing ring (52) with lubricating fluid when the internal air pressure of the intelligent cylinder (1) is relatively high, and is arranged on the outer frame (2) and the clamping block (84), the filling mechanism comprising: two piston cylinders (91) fixedly connected to one side of the inner wall of the outer frame (2); a fixing frame (92) fixedly connected to one of the clamping blocks (84); two piston rods (93) fixedly connected to the bottom of the fixing frame (92), the two piston rods (93) being respectively slidably connected to the two piston cylinders (91); and a connecting component arranged on the outer frame (2), the piston cylinder (91) and the intelligent cylinder (1).

9. The sealing device for an intelligent cylinder according to claim 8, characterized in that: An annular groove (9401) is formed in one side of the intelligent cylinder (1), a plurality of small holes (9402) are formed between the annular groove (9401) and the inside of the intelligent cylinder (1), and two liquid passage grooves (9403) are connected between the annular groove (9401) and the outside of the intelligent cylinder (1).

10. The sealing device for an intelligent cylinder according to claim 9, characterized in that: The connecting component comprises: two one-way valves (941), respectively connected to the upper part of one side of two piston cylinders (91); a bifurcated tube (942) connected between the two one-way valves, the top of the bifurcated tube (942) being connected to the liquid hole (201); two one-way valves (943) respectively connected to the lower part of one side of two piston cylinders (91); two one-way valves (944) respectively connected to the two liquid grooves (9403); and a liquid infusion tube (945) connected between the one-way valves (943) and the one-way valves (944) on the same side, two in total.

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