Smooth pipe shaft sealing tool

Abstract

The utility model discloses a light pipe shaft sealing tool which comprises a bearing module and a sealing module. The enclasping module is arranged in the bearing module, and the enclasping module enclasps and fixes the outer wall of the light pipe shaft; the sealing module is arranged in the bearing module, the sealing module is connected with one end of the bearing module and abuts against the holding module, and the sealing module seals the port and the outer wall of the light pipe shaft; and the unlocking module is arranged at the other end of the bearing module and connected with the holding module, and the unlocking module unlocks the holding and fixing of the holding module on the light pipe shaft. According to the sealing tool, the outer wall of the polished pipe shaft can be completely sealed, the holding force of the sealing tool on the polished pipe shaft is increased, and meanwhile the inner diameter of the sealing ring is prevented from being scratched.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing tooling, in particular to a sealing tooling for a smooth tube shaft. Background Art

[0002] In the prior art, a smooth tube shaft needs to be tested for sealing after production and manufacturing. When the smooth tube shaft is sealed, a wedge-shaped three-jaw clamp is usually used to hold the smooth tube shaft, and gas is filled in the pipe of the smooth tube shaft. When the pressure reaches a certain level, insufficient clamping force is likely to occur, and eventually the smooth tube shaft automatically falls off and slides out under the action of the internal pressure. The sealing ring installed at the radial sealing position of the smooth tube shaft adopts a pre-compressed form. Since the inner diameter of the sealing ring is smaller than the outer diameter of the smooth tube shaft, the sharp corners of the end of the smooth tube shaft will directly scratch the inner diameter of the sealing ring when the smooth tube shaft is inserted into the sealing tooling, seriously affecting the service life of the sealing ring, and ultimately greatly increasing the cost of the user. Summary of the invention

[0003] According to an embodiment of the utility model, a light pipe shaft sealing tool is provided, comprising:

[0004] Carrying module;

[0005] A clamping module, which is arranged in the bearing module and clamps and fixes the outer wall of the optical tube shaft;

[0006] A sealing module, which is arranged in the carrier module, is connected to one end of the carrier module and abuts against the clamping module, and seals the port and outer wall of the light pipe shaft;

[0007] The unlocking module is arranged at the other end of the bearing module and connected with the clamping module. The unlocking module unlocks the clamping module to fix the optical tube shaft.

[0008] Further, the bearing module comprises: a guide sleeve and an end cover;

[0009] The guide sleeve fixes the clamping module, the sealing module and the unlocking module;

[0010] The end cover is arranged at one end of the guide sleeve and is connected to the sealing module.

[0011] Further, the clamping module comprises: a sleeve, a plurality of first springs, a plurality of grooves and a plurality of balls;

[0012] The shaft sleeve is installed in the bearing module, the top of the shaft sleeve is connected to the sealing module, the bottom of the shaft sleeve is in a contracted shape, and the outer diameter of the bottom of the shaft sleeve gradually decreases;

[0013] The groove is opened at the bottom of the sleeve along the axial direction of the sleeve, the groove is connected with the bearing module and the light pipe axis, and a plurality of grooves are arranged around the sleeve;

[0014] A plurality of first springs are respectively arranged in a plurality of grooves, a plurality of balls correspond to the plurality of first springs respectively, one end of the first spring is connected to the shaft sleeve, and the other end of the first spring is connected to the ball, and the plurality of first springs respectively drive the plurality of balls to move and hold the light tube shaft tightly;

[0015] The unlocking module is connected to a plurality of balls, and the unlocking module drives the balls to move to compress the spring.

[0016] Further, the unlocking module comprises: a driving sleeve, a plurality of unlocking pins, a waist-shaped hole and a fixing member;

[0017] The driving sleeve is sleeved on the outer wall of the bearing module, and the driving sleeve is arranged at the other end of the bearing module;

[0018] The waist-shaped hole is opened on the driving sleeve along the axial direction of the driving sleeve, the fixing piece passes through the waist-shaped hole and is fixed in the bearing module, the fixing piece fixes the driving sleeve on the bearing module, and the driving sleeve can slide along the waist-shaped hole;

[0019] A plurality of unlocking pins correspond to a plurality of balls respectively, one end of the unlocking pin is fixed on the driving sleeve, and the other end is inserted into the groove;

[0020] The driving sleeve is pressed, and the unlocking pin drives the ball to compress the first spring, so that the unlocking ball holds the light tube shaft tightly.

[0021] Furthermore, the unlocking module further comprises: a second spring, two ends of the second spring are respectively connected to the bearing module and the driving sleeve, and the second spring is used for resetting the driving sleeve.

[0022] Further, the sealing module comprises: a port sealing mechanism and an outer wall sealing mechanism;

[0023] The port sealing mechanism is arranged in the carrier module, one end of the port sealing mechanism is connected to one end of the carrier module, and the other end is inserted at the port of the optical tube shaft, and the port sealing mechanism seals the port of the optical tube shaft;

[0024] The outer wall sealing mechanism is sleeved on the port sealing mechanism, the outer wall of the outer wall sealing mechanism is connected with the inner wall of the bearing module and the inner wall of the clamping module, and the outer wall sealing mechanism seals the outer wall of the light pipe shaft.

[0025] Further, the port sealing mechanism comprises: a sealing sleeve, a third spring and a first sealing ring;

[0026] The sealing sleeve is arranged in the outer wall sealing mechanism, the top end of the sealing sleeve is connected to the bearing module, the outer diameter of the bottom end of the sealing sleeve is smaller than the inner diameter of the light pipe shaft, the bottom outer wall of the sealing sleeve is provided with an annular sealing groove, the first sealing ring is arranged in the annular sealing groove, the inner diameter of the first sealing ring is smaller than the inner diameter of the light pipe shaft, and the first sealing ring seals the port of the light pipe shaft;

[0027] The third spring is arranged in the sealing sleeve, one end of the third spring is connected to the bearing module, and the other end of the third spring is in contact with the sealing sleeve.

[0028] Further, the outer wall sealing mechanism comprises: a piston, a fourth spring, a sealing ring assembly and a second sealing ring;

[0029] The piston sleeve is arranged on the sealing sleeve, the outer wall of the piston is connected with the inner wall of the bearing module and the inner wall of the clamping module, one end of the piston is connected with the bearing module, and the other end is connected with the sealing ring assembly;

[0030] The fourth spring is sleeved on the piston, and two ends of the fourth spring are respectively in contact with the piston and the clamping module;

[0031] The sealing ring assembly is arranged at the other end of the piston, and the sealing ring assembly abuts against the bottom end of the piston and the clamping module. The piston moves in the direction of compressing the fourth spring, squeezes the sealing ring assembly, and seals the outer wall of the light pipe shaft;

[0032] A second sealing ring is arranged between the inner wall of the piston and the outer wall of the sealing sleeve, between the outer wall of the piston and the inner wall of the bearing module, and between the outer wall of the piston and the inner wall of the clamping module.

[0033] Further, the sealing ring assembly comprises: a pair of third sealing rings and a spacer ring;

[0034] The spacer ring is arranged between a pair of third sealing rings;

[0035] One of the third sealing rings is connected to the other end of the piston, and the other third sealing ring is connected to the clamping module. The pair of third sealing rings double-seal the outer wall of the light pipe shaft.

[0036] According to the optical tube shaft sealing tool of the embodiment of the utility model, the outer wall of the optical tube shaft can be completely sealed, the clamping force of the sealing tool on the optical tube shaft can be increased, and at the same time, scratches on the inner diameter of the sealing ring can be avoided.

[0037] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a structural diagram of a light pipe shaft sealing tool according to an embodiment of the utility model;

[0039] Figure 2 It is a cross-sectional view of a light tube shaft sealing tool according to an embodiment of the utility model. DETAILED DESCRIPTION

[0040] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0041] First, combine Figure 1~2 The light tube shaft sealing tool according to the embodiment of the utility model is described, which is used for sealing the light tube shaft and has a wide range of application scenarios.

[0042] like Figure 1~2 As shown, the light tube shaft sealing tool of the embodiment of the utility model includes: a bearing module, a clamping module, a sealing module and an unlocking module.

[0043] Specifically, Figure 1~2 As shown, in this embodiment, the clamping module is arranged in the carrier module, and the clamping module clamps and fixes the outer wall of the optical tube shaft 6; the sealing module is arranged in the carrier module, and the sealing module is connected to one end of the carrier module and abuts against the clamping module, and the sealing module seals the port and outer wall of the optical tube shaft 6; the unlocking module is arranged at the other end of the carrier module and is connected to the clamping module, and the unlocking module unlocks the clamping module from clamping and fixing the optical tube shaft 6. In this embodiment, the carrier module is used for the installation and fixation of the clamping module, the sealing module and the unlocking module, and the clamping module and the unlocking module cooperate with each other to realize the clamping, fixing and loosening of the outer wall of the optical tube shaft 6, so as to facilitate the fixing and removal of the optical tube shaft 6.

[0044] Specifically, Figure 1~2 As shown, in this embodiment, the bearing module includes: a guide sleeve 11 and an end cover 12; the guide sleeve 11 fixes the clamping module, the sealing module and the unlocking module; the end cover 12 is set at one end of the guide sleeve 11 and is connected to the sealing module, which is convenient for the installation, maintenance and disassembly and replacement of the whole tooling. In this embodiment, a sealing ring is also provided between the end cover 12 and the guide sleeve 11 to achieve the sealing between the end cover 12 and the guide sleeve 11 and enhance the overall sealing performance.

[0045] Specifically, Figure 1~2As shown, in this embodiment, the clamping module includes: a sleeve 21, a plurality of first springs 22, a plurality of grooves 23 and a plurality of balls 24; the sleeve 21 is installed in the bearing module, the top of the sleeve 21 is connected to the sealing module, the bottom of the sleeve 21 is in a contracted shape, and the outer diameter of the bottom of the sleeve 21 gradually decreases; the groove 23 is opened at the bottom of the sleeve 21 along the axial direction of the sleeve 21, the groove 23 is connected to the bearing module and the light pipe axis 6, and the plurality of grooves 23 are arranged around the sleeve 21; the plurality of first springs 22 are respectively arranged in the plurality of grooves 23, the plurality of balls 24 correspond to the plurality of first springs 22 one by one, one end of the first spring 22 is connected to the sleeve 21, and the first spring 22 The other end is connected to the ball 24, and the first springs 22 drive the balls 24 to move and hold the light tube shaft 6. Since the bottom of the sleeve 21 is in a contracted shape, the bottom of the groove 23 is also in a contracted shape. When the first spring 22 releases its elastic force, it drives the balls 24 to move to the contracted position at the bottom of the groove 23, and the balls 24 and the outer wall of the light tube shaft 6 squeeze each other to hold the light tube shaft 6. This structure has a large holding force and can allow a larger gas pressure to be filled into the light tube shaft 6 without falling off; the unlocking module is connected to the balls 24, and the unlocking module drives the balls 24 to move to compress the first spring 22, so as to achieve the loosening of the balls 24 from the light tube shaft 6, so as to facilitate the removal of the light tube shaft 6 after the sealing test.

[0046] Further, if Figure 1~2 As shown, in this embodiment, the unlocking module includes: a driving sleeve 31, a plurality of unlocking pins 32, a waist-shaped hole 33 and a fixing member 34; the driving sleeve 31 is sleeved on the outer wall of the carrying module, and the driving sleeve 31 is arranged at the other end of the carrying module; the waist-shaped hole 33 is opened on the driving sleeve 31 along the axial direction of the driving sleeve 31, and the fixing member 34 passes through the waist-shaped hole 33 and is fixed in the carrying module, and the fixing member 34 fixes the driving sleeve 31 on the carrying module, and the driving sleeve 31 can slide along the waist-shaped hole 33. In the example, the waist-shaped hole 33 helps to fix the drive sleeve 31 and the guide sleeve 11, and can also limit the moving distance of the drive sleeve 31. The number of waist-shaped holes 33 and fixing parts 34 can be multiple; a plurality of unlocking pins 32 correspond to a plurality of balls respectively, one end of the unlocking pin 32 is fixed on the drive sleeve 31, and the other end is inserted into the groove 23; when unlocking is required, the drive sleeve 31 is pressed, and the unlocking pin 32 drives the ball 24 to compress the first spring 22, thereby unlocking the ball 24 from holding the light tube shaft 6 tightly.

[0047] Further, if Figure 1~2 As shown, in this embodiment, the unlocking module further includes: a second spring 35, both ends of which are respectively connected to the bearing module and the driving sleeve 31, and the second spring 35 is used for resetting the driving sleeve 31, which is convenient to use.

[0048] Specifically, Figure 1~2As shown, in this embodiment, the sealing module includes: a port sealing mechanism and an outer wall sealing mechanism; the port sealing mechanism is arranged in the carrier module, one end of the port sealing mechanism is connected to one end of the carrier module, and the other end is inserted at the port of the light pipe shaft 6, and the port sealing mechanism seals the port of the light pipe shaft 6; the outer wall sealing mechanism is sleeved on the port sealing mechanism, the outer wall of the outer wall sealing mechanism is connected to the inner wall of the carrier module and the inner wall of the clamping module, and the outer wall sealing mechanism seals the outer wall of the light pipe shaft 6. Through the two-part sealing mechanism, the outer wall of the light pipe shaft 6 is fully sealed.

[0049] Further, if Figure 1~2 As shown, in this embodiment, the port sealing mechanism includes: a sealing sleeve 41, a third spring 42 and a first sealing ring 43; the sealing sleeve 41 is arranged in the outer wall sealing mechanism, the top of the sealing sleeve 41 is connected to the bearing module, the outer diameter of the bottom end of the sealing sleeve 41 is smaller than the inner diameter of the optical tube shaft 6, ensuring that the bottom of the sealing sleeve 41 can be inserted into the optical tube shaft 6, the bottom outer wall of the sealing sleeve 41 is provided with an annular sealing groove, the first sealing ring 43 is arranged in the annular sealing groove, the inner diameter of the first sealing ring 43 is smaller than the inner diameter of the optical tube shaft 6, then the inner diameter of the first sealing ring 43 is located in the annular sealing groove. The shaped sealing groove does not contact the port of the optical tube shaft 6, so no scratches will occur. The first sealing ring 43 seals the port of the optical tube shaft 6. When sealing, the top wall of the first sealing ring 43 and the sealing sleeve 41 abut against each other, and the port of the optical tube shaft 6 abuts against the bottom wall of the first sealing ring 43, thereby realizing the sealing of the port of the optical tube shaft 6; the third spring 42 is arranged in the sealing sleeve 41, one end of the third spring 42 is connected to the bearing module, and the other end abuts against the sealing sleeve 41, and the elastic force of the third spring 42 drives the first sealing ring 43 and the optical tube shaft 6 to squeeze each other, thereby enhancing the sealing effect.

[0050] Further, if Figure 1~2As shown, in this embodiment, the outer wall sealing mechanism includes: a piston 51, a fourth spring 52, a sealing ring assembly and a second sealing ring 53; the piston 51 is sleeved on the sealing sleeve 41, the outer wall of the piston 51 is connected to the inner wall of the load-bearing module and the inner wall of the clamping module, one end of the piston 51 is connected to the load-bearing module, and the other end is connected to the sealing ring assembly; the fourth spring 52 is sleeved on the piston 51, and the two ends of the fourth spring 52 are respectively abutted against the piston 51 and the clamping module, and the fourth spring 52 realizes the reset of the piston 51 after movement; the sealing ring assembly is arranged at the piston 51 At the other end, the sealing ring assembly is in contact with the bottom end of the piston 51 and the clamping module. In the natural state, the sealing ring assembly does not contact the outer wall of the light tube shaft 6. When sealing, the piston 51 moves in the direction of compressing the fourth spring 52, squeezing the sealing ring assembly, so that the sealing ring assembly expands radially to seal the outer wall of the light tube shaft 6; a second sealing ring 53 is provided between the inner wall of the piston 51 and the outer wall of the sealing sleeve 41, between the outer wall of the piston 51 and the inner wall of the bearing module, and between the outer wall of the piston 51 and the inner wall of the clamping module to ensure the sealing of the joints of the various components and ensure the overall comprehensive sealing.

[0051] Further, if Figure 1~2 As shown, in this embodiment, the sealing ring assembly includes: a pair of third sealing rings 54 and a spacer ring 55; the spacer ring 55 is arranged between the pair of third sealing rings 54; one of the third sealing rings 54 is connected to the other end of the piston 51, and the other third sealing ring 54 is connected to the clamping module, and the pair of third sealing rings 54 doubly seal the outer wall of the light tube shaft 6. In this embodiment, the spacer ring 55 is rigid to ensure the squeezing and expanding effect of the pair of third sealing rings 54, thereby ensuring the sealing effect.

[0052] like Figure 1~2As shown, since the bottom of the sleeve 21 is in a retracted shape, the guide sleeve 11, the groove 23, the first spring 22 and the ball 24 form an axial one-way motion mechanism, and the light pipe shaft 6 moves in the direction toward the end cover 12 until it reaches the sealing position. When the light pipe shaft 6 retreats, the ball 24 moves to the end of the sleeve 21 under the drive of the first spring 22, and the ball 24 and the outer wall of the light pipe shaft 6 squeeze each other to hold the light pipe shaft 6 tightly, so as to fix the light pipe shaft 6. When taking out the light pipe shaft 6, it is only necessary to press the drive sleeve 31 to drive the second spring 35 to compress, and at the same time, the unlocking pin 32 pushes the ball 24 to compress the first spring 22, so as to loosen the fastening of the ball 24 to the light pipe shaft 6. After loosening the drive sleeve 31, the second spring 35 releases its elastic force to realize the reset of the drive sleeve 31; the outer wall sealing mechanism is the main seal, and the natural state In this state, the third sealing ring 54 does not contact the outer wall of the light tube shaft 6. When pressurized gas is introduced into the light tube shaft 6, the gas enters the sealing sleeve 41 from the port of the light tube shaft 6. The sealing sleeve 41 guides the gas and then enters the piston 51 from the port of the sealing sleeve 41, pushing the piston 51 to move and squeezing the third sealing ring 54 and the fourth spring 52, so that the third sealing ring 54 expands to seal the outer wall of the light tube shaft 6. Due to the presence of the first sealing ring 43 and the second sealing ring 53, the pressurized gas will not be discharged to the outside of the tooling along the gap in the wall of the light tube shaft 6; under the action of the third spring 42, the first sealing ring 43 squeezes and seals the gap between the port of the light tube shaft 6 and the piston 51, thereby achieving complete sealing of the outer wall of the light tube shaft 6, so that the light tube shaft 6 will not slip out of the tooling due to gas pressure.

[0053] Above, refer to Figure 1~2 The light tube shaft 6 sealing tool according to the embodiment of the utility model is described, which can achieve complete sealing of the outer wall of the light tube shaft 6, increase the clamping force of the sealing tool on the light tube shaft 6, and at the same time avoid scratching the inner diameter of the sealing ring.

[0054] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0055] Although the content of the utility model has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the utility model. After reading the above content, various modifications and substitutions of the utility model will be obvious to those skilled in the art. Therefore, the protection scope of the utility model should be limited by the attached claims.

Claims

1. A light tube shaft sealing tool, characterized in that: Include: Carrying module; A clamping module, the clamping module is arranged in the bearing module, and the clamping module clamps and fixes the outer wall of the optical tube shaft; A sealing module, wherein the sealing module is disposed in the bearing module, the sealing module is connected to one end of the bearing module and abuts against the clamping module, and the sealing module seals the port and the outer wall of the optical tube shaft; An unlocking module is arranged at the other end of the carrying module and connected to the clamping module. The unlocking module unlocks the clamping and fixing of the optical tube axis by the clamping module.

2. The light pipe shaft sealing tool as claimed in claim 1, characterized in that: The bearing module comprises: a guide sleeve and an end cover; The guide sleeve fixes the clamping module, the sealing module and the unlocking module; The end cover is disposed at one end of the guide sleeve and is connected to the sealing module.

3. The light pipe shaft sealing tool as claimed in claim 1, characterized in that: The clamping module comprises: a sleeve, a plurality of first springs, a plurality of grooves and a plurality of balls; The shaft sleeve is installed in the bearing module, the top of the shaft sleeve is connected to the sealing module, the bottom of the shaft sleeve is in a contracted shape, and the outer diameter of the bottom of the shaft sleeve gradually decreases; The groove is opened at the bottom of the sleeve along the axial direction of the sleeve, the groove is connected with the bearing module and the optical tube axis, and the plurality of grooves are arranged around the sleeve; The plurality of first springs are respectively arranged in the plurality of grooves, the plurality of balls correspond to the plurality of first springs one by one, one end of the first spring is connected to the shaft sleeve, and the other end of the first spring is connected to the ball, and the plurality of first springs respectively drive the plurality of balls to move and hold the light tube shaft tightly; The unlocking module is connected to the plurality of balls, and the unlocking module drives the balls to move so as to compress the spring.

4. The light pipe shaft sealing tool as claimed in claim 3, characterized in that: The unlocking module comprises: a driving sleeve, a plurality of unlocking pins, a waist-shaped hole and a fixing member; The driving sleeve is sleeved on the outer wall of the carrying module, and the driving sleeve is arranged at the other end of the carrying module; The waist-shaped hole is opened on the driving sleeve along the axial direction of the driving sleeve, the fixing piece passes through the waist-shaped hole and is fixed in the carrying module, the fixing piece fixes the driving sleeve on the carrying module, and the driving sleeve can slide along the waist-shaped hole; The plurality of unlocking pins correspond to the plurality of balls one by one, respectively, one end of the unlocking pin is fixed on the driving sleeve, and the other end is inserted into the groove; The driving sleeve is pressed, and the unlocking pin drives the ball to compress the first spring, thereby unlocking the ball from holding the light tube shaft tightly.

5. The light pipe shaft sealing tool as claimed in claim 4, characterized in that: The unlocking module further includes: a second spring, two ends of which are respectively connected to the bearing module and the driving sleeve, and the second spring is used for resetting the driving sleeve.

6. The light pipe shaft sealing tool as claimed in claim 1, characterized in that: The sealing module comprises: a port sealing mechanism and an outer wall sealing mechanism; The port sealing mechanism is arranged in the carrier module, one end of the port sealing mechanism is connected to one end of the carrier module, and the other end is inserted at the port of the optical tube axis, and the port sealing mechanism seals the port of the optical tube axis; The outer wall sealing mechanism is sleeved on the port sealing mechanism, the outer wall of the outer wall sealing mechanism is connected with the inner wall of the bearing module and the inner wall of the clamping module, and the outer wall sealing mechanism seals the outer wall of the optical tube shaft.

7. The light pipe shaft sealing tool as claimed in claim 6, characterized in that: The port sealing mechanism comprises: a sealing sleeve, a third spring and a first sealing ring; The sealing sleeve is arranged in the outer wall sealing mechanism, the top end of the sealing sleeve is connected to the bearing module, the outer diameter of the bottom end of the sealing sleeve is smaller than the inner diameter of the optical tube shaft, the bottom outer wall of the sealing sleeve is provided with an annular sealing groove, the first sealing ring is arranged in the annular sealing groove, the inner diameter of the first sealing ring is smaller than the inner diameter of the optical tube shaft, and the first sealing ring seals the port of the optical tube shaft; The third spring is arranged in the sealing sleeve, one end of the third spring is connected to the bearing module, and the other end of the third spring is abutted against the sealing sleeve.

8. The light pipe shaft sealing tool as claimed in claim 7, characterized in that: The outer wall sealing mechanism comprises: a piston, a fourth spring, a sealing ring assembly and a second sealing ring; The piston sleeve is arranged on the sealing sleeve, the outer wall of the piston is connected with the inner wall of the bearing module and the inner wall of the clamping module, one end of the piston is connected with the bearing module, and the other end is connected with the sealing ring assembly; The fourth spring is sleeved on the piston, and two ends of the fourth spring are respectively in contact with the piston and the clamping module; The sealing ring assembly is arranged at the other end of the piston, and the sealing ring assembly abuts against the bottom end of the piston and the clamping module. The piston moves in the direction of compressing the fourth spring, squeezes the sealing ring assembly, and seals the outer wall of the light pipe shaft; The second sealing ring is disposed between the inner wall of the piston and the outer wall of the sealing sleeve, between the outer wall of the piston and the inner wall of the bearing module, and between the outer wall of the piston and the inner wall of the clamping module.

9. The light pipe shaft sealing tool as claimed in claim 8, characterized in that: The sealing ring assembly comprises: a pair of third sealing rings and a spacer ring; The spacer ring is arranged between the pair of third sealing rings; One of the third sealing rings is connected to the other end of the piston, and the other third sealing ring is connected to the clamping module. The pair of third sealing rings double-seal the outer wall of the light tube shaft.

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