An apparatus for removing the coating on the outer wall of a capillary tube

Abstract

This application relates to the technical field of capillary coating treatment equipment, and particularly to an equipment for removing the coating on the outer wall of a capillary. The equipment includes a clamping device, a driving device, a laser irradiation device, and an image acquisition device. The clamping device fixes the capillary through a first clamping tube and a second clamping tube rotatably connected to the base. The driving device drives the clamping tubes to rotate synchronously. The laser irradiation device generates a laser beam to irradiate the target area to remove the coating. The image acquisition device uses a vision sensor to obtain an image and determine whether the coating has been completely removed. In addition, it also includes a floating positioning device to ensure the stable fixation of the capillary, as well as a gas guiding mechanism and a sealing cover to enhance the reliability and efficiency of the equipment. This application achieves the effect of efficiently and accurately removing the coating on the outer wall of the capillary, improving the production quality and work efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of capillary coating processing equipment, and in particular to an equipment for removing the coating on the outer wall of a capillary. Background Art

[0002] Capillary electrophoresis (CE) is a liquid phase separation technology that uses capillaries as separation sites and high-voltage direct current electric fields as driving forces to achieve separation according to the size and charge of base fragments in sample components. This technology developed rapidly in the 1980s and has become one of the separation and analysis technologies comparable to gas chromatography and high-performance liquid chromatography. Especially in genetic analyzers, capillary arrays, as an important experimental consumable, are widely used in fields such as DNA sequence determination. However, in practical applications, in order to improve detection accuracy and efficiency, it is necessary to remove the outer wall coating of specific areas of the capillary in order to better observe the changes in the internal substances.

[0003] At present, the capillary outer wall coating removal methods on the market mainly include combustion decoating method, reagent decoating method and ozone decoating method; the combustion decoating method usually uses a lighter flame to burn the polyimide coating, and then wipes the remaining coal slag with paper or cloth. Although this method is simple, it can easily cause damage or deformation of the capillary and affect its optical properties; the reagent decoating method uses highly corrosive reagents such as hot sulfuric acid and hydrazine, which are not only harmful to human health, but also pollute the environment. In addition, the ozone decoating method places the capillary in a reaction chamber and exposes it to ozone-containing reaction gas, but it is difficult to accurately control the removal position, resulting in unstable removal effect.

[0004] The above-mentioned existing capillary outer wall coating removal methods have many shortcomings, such as easy damage to the capillary, complex operation, serious environmental pollution and inaccurate removal position. Therefore, it is urgent to develop a new method or device that can effectively avoid these problems to ensure the efficiency and accuracy of capillary coating removal. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the present application provides a device for removing the coating on the outer wall of a capillary. The laser can be directly irradiated on the surface of the coating on the outer wall of the capillary, and the uniform rotation of the capillary can quickly and once remove the coating in the target area without the need for additional wiping or cleaning steps.

[0006] This application is implemented through the following technical solutions:

[0007] A device for removing a coating on the outer wall of a capillary tube, comprising:

[0008] A clamping device for fixing a capillary tube, comprising a first clamping tube and a second clamping tube rotatably connected to a base. The first clamping tube and the second clamping tube are coaxially arranged, and there is a spaced space between the first clamping tube and the second clamping tube for exposing the capillary tube to the irradiation of a laser beam.

[0009] A driving device for driving the first clamping tube and the second clamping tube to rotate synchronously along their own axes.

[0010] A laser irradiation device for generating a laser beam and using the laser beam to irradiate a target area on the outer wall of the capillary tube to remove the coating on the outer wall of the target area.

[0011] An image acquisition device that uses a vision sensor to obtain an image of the target area to determine whether the outer wall coating of the target area has been removed.

[0012] By adopting the above technical solutions, efficient and precise removal of the coating on the outer wall of the capillary tube is achieved. Specifically, the laser directly irradiates the surface of the coating, and the capillary tube rotates at a constant speed to ensure that the coating is removed in one go for each revolution, without the need for pretreatment or subsequent cleaning processes, improving work efficiency; an electron microscope is equipped to monitor the coating removal situation in real time to ensure that the coating at each position is completely removed, avoiding residual images for subsequent use; the laser is precisely controlled to move the distance through a ball screw mechanism, capable of accurately removing the coating at a specified position and length, improving the controllability and consistency of the operation; no chemical reagents are used throughout the process, eliminating the harm to the human body and the environment, and reducing the cost and complexity of waste liquid treatment; the whole device is simply designed, small in size, easy to move and operate, and suitable for laboratory and on-site use.

[0013] Optionally, the driving device includes a driving motor and a transmission shaft. The driving motor provides rotational power for the transmission shaft; a first transmission member and a second transmission member are fixed on the transmission shaft. The first transmission member is used to drive the first clamping tube to rotate, and the second transmission member is used to drive the first clamping tube to rotate.

[0014] By adopting the above technical solutions, the cooperation between the driving motor and the transmission shaft is realized, which can ensure the synchronous rotation of the first clamping tube and the second clamping tube. Specifically, the driving motor provides stable rotational power, and the first transmission member and the second transmission member on the transmission shaft are respectively connected to the first clamping tube and the second clamping tube, so that the two clamping tubes can rotate synchronously under the drive of the same power source. This not only improves the stability of the capillary tube during the coating removal process but also avoids the risk of capillary tube distortion or fracture caused by non-synchronization.

[0015] Optionally, a worm gear is provided on the transmission shaft, and a worm meshing with the worm gear is provided at the output end of the driving motor; a first driven member adapted to the first transmission member is provided on the first clamping tube, and a second driven member adapted to the second transmission member is provided on the second clamping tube; the first transmission member and the first driven member are connected by a first transmission belt, and the second transmission member and the second driven member are connected by a second transmission belt.

[0016] By adopting the above technical solution, this design ensures that the two clamping tubes can rotate precisely synchronously, avoiding problems such as capillary twisting or breakage caused by non-synchronization, and improving the stability and reliability of the device.

[0017] Optionally, through channels arranged along the length direction are provided at the axes of the first clamping tube and the second clamping tube; the capillary tube is fixed in the through channels, and semi-circular cuts are provided in the middle sections of the first clamping tube and the second clamping tube.

[0018] By adopting the above technical solution, it is convenient to stably fix and precisely rotate the capillary tube. Specifically, through channels arranged along the length direction are provided at the axes of the first clamping tube and the second clamping tube, ensuring that the capillary tube can be smoothly inserted and fixed therein, improving the operation convenience and stability of the device; semi-circular cuts are provided in the middle sections of the first clamping tube and the second clamping tube, which provides a larger operation space, facilitating the observation and fixing of the state of the capillary tube, and ensuring the accuracy of coating removal.

[0019] Optionally, a cover plate for fixing the capillary tube is provided in the semi-circular cut, and a flexible rubber pad is provided between the cover plate and the through channel.

[0020] By adopting the above technical solution, mainly for capillary tubes that are not easily bent, the diameter of the through channel can be adapted to the diameter of the capillary tube. The capillary tube can be fixed between the first clamping tube and the second clamping tube through the cover plate, and the axis of the capillary tube can be ensured to be consistent with the axis of the clamping tube; the flexible rubber pad between the cover plate and the through channel can effectively protect the capillary tube from damage, ensuring that the capillary tube will not be damaged due to hard contact during the fixing and rotation processes; at the same time, the flexible rubber pad can also improve the stability of the capillary tube fixing, avoiding the displacement of the capillary tube during laser coating removal, and ensuring the accuracy and consistency of coating removal.

[0021] Optionally, floating positioning devices for defining the capillary on the rotation axis are provided on both the first clamping tube and the second clamping tube; the floating positioning device includes a fixed sleeve, an elastic member, and a sliding sleeve. At least three hinge seats are evenly distributed along the circumferential direction of the inner wall of the fixed sleeve. A floating rod is hinged on the hinge seat, and a positioning roller is rotatably connected to the floating rod. The sliding sleeve is slidably connected in the fixed sleeve, and the sliding sleeve abuts against the floating rod under the thrust provided by the elastic member to drive the positioning roller to move towards the axis of the fixed sleeve.

[0022] By adopting the above technical solution, the capillary can maintain accurate axial positioning during the clamping process, avoiding uneven coating removal or damage caused by deviation; the floating positioning device can adapt to capillaries of different diameters, ensuring that each capillary can be stably fixed on its axis during rotation, improving the accuracy and reliability of coating removal; at the same time, the design of this device makes it more convenient to clamp and unload the capillary, reducing the operation time and labor intensity.

[0023] Further optionally, a gas guiding mechanism for introducing gas into the lumen of the capillary to increase the air pressure in the capillary lumen is provided at the end of the first clamping tube; a sealing cover for sealing the capillary is provided at the end of the second clamping tube.

[0024] By adopting the above technical solution, the design of introducing gas into the capillary to increase the air pressure in the lumen can effectively prevent the capillary from bending deformation caused by uneven external pressure during its own gravity or laser impact; specifically, for a softer capillary, there is no support in the middle laser irradiation area, and it will sag under its own gravity, causing the capillary to bend and deform. When the capillary rotates, it is not conducive to the alignment of the laser. Moreover, when the laser irradiates on the coating on the outer wall of the capillary, the local high temperature will cause instantaneous pressure changes on the capillary surface. Without sufficient internal support, the capillary may deform or even break due to uneven stress. By providing a gas guiding mechanism at the end of the first clamping tube, gas can be injected into the capillary, and with the design of the sealing cover at the end of the second clamping tube, it is ensured that the gas will not leak from the other end, thereby keeping the air pressure in the lumen at a relatively high level all the time, forming an expansion effect in the capillary lumen to straighten the capillary wall, ensuring that the capillary can still maintain a stable state when subjected to laser impact, and avoiding the bending phenomenon caused by external pressure differences.

[0025] Further optionally, the air guiding mechanism includes a cylinder body arranged at the end of the first clamping tube and communicated with the through channel. A piston is slidably connected in the cylinder body. A threaded push rod is rotatably connected to the tail of the piston. The threaded push rod is threadedly connected to a threaded cover arranged at the tail end of the cylinder body. The sealing cover is hinged to the end of the second clamping tube. A locking mechanism for fixing the sealing cover is arranged at the end of the second clamping tube. A first sealing sleeve is arranged in the through channel close to the cylinder body, and a second sealing sleeve is arranged in the through channel close to the sealing cover.

[0026] By adopting the above technical solution, the air guiding mechanism has a simple structure and low manufacturing cost. It can effectively introduce gas into the capillary tube, promote the increase of the air pressure in the capillary tube cavity, and help to stabilize the position of the capillary tube during the laser coating removal process, avoiding displacement caused by external vibration or impact. At the same time, the design of the sealing cover ensures the sealing performance of the capillary tube end, prevents gas leakage, and further improves the reliability and stability of the system. The settings of the first sealing sleeve and the second sealing sleeve effectively prevent gas from overflowing from the gap between the through channel and the capillary tube, enhancing the sealing performance of the entire device.

[0027] Optionally, the laser irradiation device includes a laser generator installed on a guide base. The guide base is slidably connected to a guide rail, and the guide base is powered by a pushing mechanism to move. The image acquisition device includes an electron microscope fixed on a sliding seat. The sliding seat is slidably connected to a sliding rod, and a fastener is arranged on the sliding seat. The fastener is used to fix the sliding seat on the sliding rod.

[0028] By adopting the above technical solution, the laser generator can accurately move to the required position to ensure that the laser beam irradiates the target area on the outer wall of the capillary tube, effectively removing the coating. At the same time, the electron microscope of the image acquisition device can monitor the coating removal situation in real time during the laser removal process to ensure that the removal effect meets the expected standard. This design not only improves the accuracy and efficiency of coating removal, but also avoids the problems of multiple wiping or post-combustion cleaning in traditional methods, simplifies the operation process, and reduces the impact on the environment.

[0029] Further optionally, the pushing mechanism includes a pushing motor and a lead screw. A threaded hole adapted to the lead screw is arranged on the guide base.

[0030] By adopting the above technical solution, the pushing mechanism composed of the pushing motor and the screw can accurately control the moving distance of the sliding seat, ensure the precise movement of the laser on the axial direction of the capillary tube, and thus achieve the precise removal of the coating on the outer wall of the target area. The design of the threaded hole adapted to the screw enables the sliding seat to move smoothly under the drive of the screw, improving the operation stability and reliability of the entire device.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] The present application has high efficiency in removing coatings. The laser is directly irradiated on the coating surface, and combined with the uniform rotation of the capillary, the coating of the target area can be removed quickly and in one go without the need for additional wiping or cleaning procedures.

[0033] The coating removal effect of this application is good, and the coating removal is monitored in real time by electron microscope to ensure that each circle of coating is completely removed, meeting the high precision requirements required for detection;

[0034] The present application can adapt to capillaries of different diameters, ensuring that each capillary can be stably fixed on its axis during rotation, thus improving the accuracy and reliability of coating removal;

[0035] The present application can effectively prevent the capillary from bending and deforming due to uneven external pressure under its own gravity or laser impact, and ensure that the capillary can remain stable under its own gravity and when subjected to laser impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 is a schematic structural diagram of the device for removing the coating on the outer wall of a capillary tube described in Example 1;

[0037] Figure 2 is a schematic structural diagram of the first clamping tube in Embodiment 1;

[0038] Figure 3 is a schematic structural diagram of the cover plate in Embodiment 1;

[0039] Figure 4 is a schematic structural diagram of the second clamping tube in Embodiment 1;

[0040] Figure 5 is a schematic diagram of the structure of the laser irradiation described in Example 1;

[0041] Figure 6 is a schematic structural diagram of the guide seat described in the first embodiment;

[0042] Figure 7 is a structural schematic diagram of the image acquisition device described in Example 1;

[0043] Figure 8 is a schematic diagram of the arrangement structure of the first clamping tube and the second clamping tube in the second embodiment;

[0044] Figure 9 is a side structural schematic diagram of the floating positioning device described in Example 2;

[0045] Figure 10 is a front view structural schematic diagram of the floating positioning device described in the second embodiment;

[0046] Figure 11It is a schematic diagram of the arrangement structure of the first clamping tube and the second clamping tube described in the third embodiment;

[0047] Figure 12 It is a schematic diagram of the structure of the floating positioning device described in the third embodiment;

[0048] Figure 13 It is a schematic diagram of the structure of the sealing cover described in the third embodiment.

[0049] In the figure: 1, base; 2, first clamping tube; 21, first follower; 3, second clamping tube; 31, second follower; 4, driving device; 41, transmission shaft; 411, first transmission member; 412, second transmission member; 413, code disc; 42, driving motor; 43, first transmission belt; 44, second transmission belt; 5, laser irradiation device; 51, laser generator; 511, adjusting plate; 512, arc-shaped limiting groove; 52, guide base; 521, locking bolt hole; 522, threaded hole; 53, guide rail; 54, lead screw; 55, pushing motor; 6, image acquisition device; 61, electron microscope; 62, slide bar; 63, slide seat; 631, fastener; 7, floating positioning device; 71, fixed sleeve; 72, hinge seat; 73, floating rod; 74, positioning roller; 75, sliding sleeve; 76, elastic member; 77, snap ring; 8, air guiding mechanism; 81, cylinder block; 82, piston; 83, threaded push rod; 84, threaded cover; 85, positioning grid; 86, first sealing sleeve; 9, sealing cover; 91, sealing ring; 92, locking mechanism; 93, second sealing sleeve; 10, capillary tube; 11, through channel; 12, semi-circular cut; 13, cover plate; 131, buckle; 14, flexible rubber pad. Detailed implementation manners

[0050] The technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope protected by the present application. Embodiment 1

[0051] Refer to Figure 1, an embodiment of the present application discloses a device for removing the coating on the outer wall of a capillary tube, including a clamping device, a driving device 4, a laser irradiation device 5, and an image acquisition device 6. Among them, the clamping device is used to fix the capillary tube 10, including a first clamping tube 2 and a second clamping tube 3 rotatably connected to the base 1. These two clamping tubes are coaxially arranged, and an operation space is provided between the first clamping tube 2 and the second clamping tube 3; the driving device 4 is used to drive the first clamping tube 2 and the second clamping tube 3 to rotate synchronously along their own axes; the laser irradiation device 5 is used to generate a laser beam and irradiate the target area on the outer wall of the capillary tube 10 with the laser beam to remove the coating on the outer wall of the target area; the image acquisition device 6 uses a vision sensor to obtain the image of the target area to judge whether the coating on the outer wall of the target area has been removed.

[0052] Specifically, referring to Figure 1 , the clamping device includes two coaxially arranged clamping tubes, namely the first clamping tube 2 and the second clamping tube 3; these two clamping tubes are fixed on the base 1 through bearings and can rotate freely in the axial direction; a first transmission member 411 is fixed on the first clamping tube 2, specifically a synchronous pulley, and a second transmission member 412 is fixed on the second clamping tube 3, also a synchronous pulley. The driving device 4 includes a driving motor 42 and a transmission shaft 41. The driving motor 42 provides rotational power for the transmission shaft 41; a first transmission member 411 and a second transmission member 412 are fixed on the transmission shaft 41. The first transmission member 411 is used to drive the first clamping tube 2 to rotate, and the second transmission member 412 is used to drive the second clamping tube 3 to rotate. The two synchronous pulleys are respectively connected to the first transmission member 411 and the second transmission member 412 fixed at both ends of the transmission shaft 41 through a first transmission belt 43 and a second transmission belt 44, so that the two clamping tubes can rotate synchronously; the driving motor 42 can be a stepping motor with a self-locking function. There is also a third transmission member on the transmission shaft 41, which is connected to the stepping motor with a self-locking function through a synchronous belt, ensuring that when manually clamping the capillary tube 10, the clamping tube will not rotate easily, facilitating clamping; it should be noted that a worm and gear transmission method can also be adopted between the transmission shaft 41 and the stepping motor. The worm and gear mechanism has a high reduction ratio, enabling the system to operate at a lower rotational speed, reducing energy consumption, and extending the service life of the device. Moreover, the worm and gear mechanism has the characteristic of one-way transmission. When the worm stops rotating, the worm wheel can be locked to prevent the transmission rod from deflecting. If a code disk 413 is added to the transmission rod, the rotation angle of the transmission rod can be read through an encoder for precise control of the rotation angle of the transmission rod in the later stage.

[0053] Among them, referring to Figures 2 to 4, a through-channel 11 arranged along the length direction is provided at the axis of the first clamping tube 2 and the second clamping tube 3, and the capillary tube 10 is fixed in this through-channel 11; for the convenience of fixing and observing the capillary tube 10, semi-circular cuts 12 are provided in the middle sections of the first clamping tube 2 and the second clamping tube 3; in order to prevent the capillary tube 10 from being damaged during the clamping process, a cover plate 13 for fixing the capillary tube 10 is provided in the semi-circular cut 12, and a flexible rubber pad 14, specifically silicone foam, is provided between the cover plate 13 and the through-channel 11; this can not only ensure the reliable fixation of the capillary tube 10, but also reduce the damage of the capillary tube 10 caused by hard contact; for the convenience of fixing the cover plate 13 to the clamping tube, the cover plate 13 is provided with a clamping plate, and the first clamping tube 2 and the second clamping tube 3 are provided with clamping grooves.

[0054] Referring to Figures 5 to 6 , the laser irradiation device 5 includes a laser generator 51 installed on a guide base 52, the guide base 52 is slidably connected to a guide rail 53, and the guide base 52 is powered by a pushing mechanism to move; the pushing mechanism includes a pushing motor 55 and a screw rod, and a threaded hole 522 adapted to the screw rod is provided on the guide base 52. Such a design can accurately control the moving distance of the laser generator, so as to ensure that the position and length of the removed coating are very accurate; for the convenience of adjusting the irradiation angle of the laser generator 51, the laser generator 51 is fixed on an adjusting plate 511, and one end of the adjusting plate 511 is hinged to the guide base 52 and can rotate on the guide base 52. And an arc-shaped limit hole is provided at the end of the adjusting plate 511 far from the hinge point, a locking bolt hole 521 adapted to the arc-shaped limit hole is provided on the guide base 52, and a fastening bolt is threadedly connected in the locking bolt hole 521; among them, the laser generator 51 is a blue laser with a wavelength of 445 nm and a working power of 30 mW, which can efficiently remove the polyimide coating on the outer wall of the capillary tube 10 without damaging the capillary tube 10.

[0055] Referring to Figure 7 , the image acquisition device 6 includes an electron microscope 61 fixed on a slide base 63. The slide base 63 is provided with an open slide hole adapted to a slide rod 62 and is slidably connected to the slide rod 62 through the open slide hole, and the position of the electron microscope 61 can be adjusted as needed. After the adjustment is completed, it can be locked by a fastener 631 provided at the opening of the open slide hole to firmly fix the slide base 63 on the slide rod 62. Specifically, the fastener 631 is a bolt; when the laser irradiates the capillary tube 10, the microscope transmits images to the computer in real time, and the program automatically checks and judges whether the coating has been completely removed; if there is a residual coating, the position of the laser generator is adjusted and the impact continues until it is completely removed.

[0056] The implementation principle of this embodiment is as follows: First, insert a single capillary 10 between the first clamping tube 2 and the second clamping tube 3, and fix the capillary 10 through the cover plate 13 and the flexible rubber pad 14. Then start the stepper motor, and drive the two clamping tubes to rotate synchronously through the transmission shaft 41. After setting the target area and length of the coating to be removed, turn on the laser, and the laser beam irradiates on the outer wall of the capillary 10. As the capillary 10 rotates, a circle of coating is gradually removed; at this time, the microscope monitors and transmits images to the computer in real time, and the program automatically checks the coating removal situation. If it is not completely removed, adjust the position of the laser and continue to remove; the whole process has a high degree of automation, is easy to operate, has a good coating removal effect, and does not require chemical reagents, which is environmentally friendly and safe. Embodiment 2

[0057] Refer to Figures 8 to 10 , the difference between this embodiment and Embodiment 1 is that a floating positioning device 7 is added to enhance the applicability of the device and can accurately position capillaries 10 with different diameters.

[0058] Specifically, refer to Figures 9 to 10 , floating positioning devices 7 for restricting the capillary 10 on the rotation axis are provided on both the first clamping tube 2 and the second clamping tube 3. This floating positioning device 7 includes a fixed sleeve 71, an elastic member 76, and a sliding sleeve 75. At least three hinge seats 72 are evenly distributed along the circumferential direction of the inner wall of the fixed sleeve 71. A floating rod 73 is hinged on the hinge seat 72, and a positioning roller 74 is rotatably connected to the floating rod 73; the sliding sleeve 75 is slidably connected in the fixed sleeve 71, and the sliding sleeve 75 abuts against the floating rod 73 under the thrust provided by the elastic member 76, driving the positioning roller 74 to move towards the axis of the fixed sleeve 71, thereby firmly fixing the capillary 10 on the center line.

[0059] The implementation principle of this embodiment is: In addition to the basic functions of the above embodiment, the newly added floating positioning device 7 ensures a certain degree of freedom in axial movement through the coordinated action of multiple positioning rollers 74. The capillary 10 can penetrate axially in the clamping tube and is also limited coordinately in the radial direction, ensuring that the capillary 10 always remains on the center line during rotation, avoiding uneven coating removal caused by deviation, and can well transmit the rotational torque, enabling the capillary 10 to rotate together with the clamping tube. Embodiment 3

[0060] Refer to Figures 11 to 13 , the difference between this embodiment and Embodiment 2 is that a gas guiding mechanism 8 is added to enhance the air pressure in the lumen of the capillary 10, enhance the rigidity and stability of the capillary 10, and ensure that it maintains a stable posture during rotation even if the capillary 10 is slightly bent.

[0061] Specifically, refer to Figure 12, at the end of the first clamping tube 2, there is a gas guiding mechanism 8 for introducing gas into the lumen of the capillary tube 10 to increase the air pressure inside the lumen of the capillary tube 10; the gas guiding mechanism 8 includes a cylinder body 81 provided at the end of the first clamping tube 2 and communicating with the through-channel 11. A piston 82 is slidably connected in the cylinder body 81. A threaded push rod 83 is rotatably connected to the tail of the piston 82. The threaded push rod 83 is threadedly connected to a threaded cover 84 provided at the tail end of the cylinder body 81; by rotating the threaded push rod 83, the piston 82 is pushed forward to introduce gas into the capillary tube 10, increasing the air pressure inside the lumen; this helps to enhance the rigidity and stability of the capillary tube 10 and prevent uneven removal of the coating caused by vibration during laser irradiation; in order to position the capillary tube 10, a positioning grid 85 is also fixed at the bottom of the cylinder body 81.

[0062] Referring to Figure 13 , at the end of the second clamping tube 3, there is a sealing cover 9 for sealing the capillary tube 10; the sealing cover 9 is hinged at the end of the second clamping tube 3, and a locking mechanism 92 for fixing the sealing cover 9 is provided at the end of the second clamping tube 3; the locking mechanism 92 can be a bolt hinged on the second clamping tube 3, and a wing nut is threadedly connected to the bolt, and an opening clamping plate adapted to the butterfly bolt buckle is provided on the sealing cover 9; a first sealing sleeve 86 is provided in the through-channel 11 near the cylinder body 81, and a second sealing sleeve 93 is provided in the through-channel 11 near the sealing cover 9, which not only ensures the effective introduction of gas but also prevents gas leakage, improving the reliability and safety of the system.

[0063] The implementation principle of the embodiment of this application is: the gas guiding mechanism 8 enhances the rigidity and stability of the capillary tube 10 by introducing gas into the capillary tube 10, reducing the adverse effects caused by vibration. These improvement measures make the whole system more reliable and the coating removal effect better.

[0064] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of this application, not to limit them; although this application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the embodiments of this application.

Claims

1. A device for removing a coating on the outer wall of a capillary tube, characterized in that: include: A clamping device, the clamping device is used to fix the capillary (10), comprising a first clamping tube (2) and a second clamping tube (3) rotatably connected to the base (1), the first clamping tube (2) and the second clamping tube (3) being coaxially arranged, and a spacing space for exposing the capillary (10) to laser beam irradiation is provided between the first clamping tube (2) and the second clamping tube (3); A driving device (4), the driving device (4) being used to drive the first clamping tube (2) and the second clamping tube (3) to rotate synchronously along their own axes; the axes of the first clamping tube (2) and the second clamping tube (3) are both provided with through-channels (11) arranged along the length direction; the capillary tube (10) is fixed in the through-channel (11), and the middle sections of the first clamping tube (2) and the second clamping tube (3) are both provided with semicircular cutouts (12); a cover plate (13) for fixing the capillary tube (10) is provided in the semicircular cutout (12), and a flexible rubber pad (14) is provided between the cover plate (13) and the through-channel (11); the first clamping tube (2) and the second clamping tube (3) are both provided with a through-channel (11) and a through-channel (11) extending along the length direction; the capillary tube (10) is fixed in the through-channel (11), and the capillary tube (10) is fixed in the through-channel (11) and the middle sections of the first clamping tube (2) and the second clamping tube (3) are both provided with semicircular cutouts (12); a cover plate (13) for fixing the capillary tube (10) is provided in the semicircular cutout (12), and a flexible rubber pad (14) is provided between the cover plate (13) and the through-channel (11); The tube (3) is provided with a floating positioning device (7) for limiting the capillary tube (10) on the rotation axis; the floating positioning device (7) comprises a fixed sleeve (71), an elastic member (76) and a sliding sleeve (75); the inner wall of the fixed sleeve (71) is evenly distributed with at least three hinge seats (72) along the circumferential direction; a floating rod (73) is hingedly connected to the hinge seat (72); a positioning roller (74) is rotatably connected to the floating rod (73); the sliding sleeve (75) is slidably connected in the fixed sleeve (71); and the sliding sleeve (75) abuts against the floating rod (73) under the thrust provided by the elastic member (76) to drive the positioning roller (74) to move toward the axis of the fixed sleeve (71); A laser irradiation device (5), the laser irradiation device (5) being used to generate a laser beam and to irradiate a target area on the outer wall of the capillary (10) with the laser beam to remove the coating on the outer wall of the target area; An image acquisition device (6) is used to acquire an image of a target area using a visual sensor to determine whether the outer wall coating of the target area has been removed.

2. The device for removing the coating on the outer wall of a capillary according to claim 1, characterized in that: The driving device (4) comprises a driving motor (42) and a transmission shaft (41); the driving motor (42) provides rotational power for the transmission shaft (41); a first transmission member (411) and a second transmission member (412) are fixed to the transmission shaft (41); the first transmission member (411) is used to drive the first clamping tube (2) to rotate, and the second transmission member (412) is used to drive the first clamping tube (2) to rotate.

3. According to the device for removing the coating on the outer wall of a capillary tube as described in claim 2, the first clamping tube (2) is provided with a first follower (21) adapted to the first transmission member (411), and the second clamping tube (3) is provided with a second follower (31) adapted to the second transmission member (412); the first transmission member (411) and the first follower (21) are connected via a first transmission belt (43), and the second transmission member (412) and the second follower (31) are connected via a second transmission belt (44).

4. The device for removing the coating on the outer wall of a capillary according to claim 1, characterized in that: The end of the first clamping tube (2) is provided with a gas guide mechanism (8) for introducing gas into the lumen of the capillary tube (10) and increasing the gas pressure in the lumen of the capillary tube (10); the end of the second clamping tube (3) is provided with a sealing cover (9) for sealing the capillary tube (10).

5. The device for removing the coating on the outer wall of a capillary according to claim 4, characterized in that: The air guide mechanism (8) comprises a cylinder body (81) arranged at the end of the first clamping tube (2) and connected to the through-channel (11); a piston (82) is slidably connected in the cylinder body (81); a threaded push rod (83) is rotatably connected to the rear end of the piston (82); the threaded push rod (83) is threadedly connected to a threaded cover (84) arranged at the rear end of the cylinder body (81); the sealing cover (9) is hinged at the end of the second clamping tube (3); a locking mechanism (92) for fixing the sealing cover (9) is provided at the end of the second clamping tube (3); a first sealing sleeve (86) is provided in the through-channel (11) close to the cylinder body (81); and a second sealing sleeve (93) is provided in the through-channel (11) close to the sealing cover (9).

6. The device for removing the coating on the outer wall of a capillary according to claim 1, characterized in that: The laser irradiation device (5) comprises a laser generator (51) mounted on a guide seat (52), the guide seat (52) being slidably connected to a guide rail (53), and the guide seat (52) being moved by power provided by a pushing mechanism; the image acquisition device (6) comprises an electron microscope (61) fixed on a slide seat (63), the slide seat (63) being slidably connected to a slide rod (62), and a fastener (631) being provided on the slide seat (63); the fastener (631) is used to fix the slide seat (63) to the slide rod (62).

7. The device for removing the coating on the outer wall of a capillary according to claim 6, characterized in that: The pushing mechanism comprises a pushing motor (55) and a screw rod (54), and the guide seat (52) is provided with a threaded hole (522) adapted to the screw rod (54).

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