Equipment for removing coating on outer wall of capillary tube

Abstract

The invention relates to the technical field of capillary tube coating treatment equipment, in particular to equipment for removing a coating on the outer wall of a capillary tube. The equipment comprises a clamping device, a driving device, a laser irradiation device and an image acquisition device. The clamping device fixes a capillary tube through a first clamping tube and a second clamping tube which are rotationally connected to the base, the driving device drives the clamping tubes to synchronously rotate, the laser irradiation device generates laser beams to irradiate a target area so as to remove a coating, and the image acquisition device acquires an image through a visual sensor and judges whether the coating is completely removed or not. In addition, a floating positioning device is further included to ensure that the capillary tube is stably fixed, and an air guide mechanism and a sealing cover enhance the reliability and efficiency of equipment. According to the device, the effect of efficiently and accurately removing the coating on the outer wall of the capillary tube is achieved, and the production quality and the working efficiency are improved.

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: A device for removing a coating on the outer wall of a capillary tube, comprising: A clamping device, the clamping device is used to fix the capillary, comprising a first clamping tube and a second clamping tube rotatably connected to the base, the first clamping tube and the second clamping tube are coaxially arranged, and a spacing space is provided between the first clamping tube and the second clamping tube for exposing the capillary to the laser beam; A driving device, the driving device is used to drive the first clamping tube and the second clamping tube to rotate synchronously along their own axes; A laser irradiation device, wherein the laser irradiation device is used to generate a laser beam and use the laser beam to irradiate a target area on the outer wall of the capillary to remove the coating on the outer wall of the target area; An image acquisition device uses a visual sensor to acquire an image of a target area to determine whether the outer wall coating of the target area has been removed.

[0007] By adopting the above technical solution, efficient and accurate removal of the coating on the outer wall of the capillary is achieved. Specifically, the laser is directly irradiated on the coating surface, and the capillary rotates at a uniform speed to ensure that each circle of coating is removed at one time, without the need for pretreatment or subsequent cleaning procedures, thereby 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 to avoid subsequent use of residual images; the laser accurately controls the moving distance through a ball screw mechanism, and can accurately remove the coating at a specified position and length, thereby improving the controllability and consistency of the operation; the entire process does not use chemical reagents, eliminating harm to the human body and the environment, and reducing the cost and complexity of waste liquid treatment; the entire device is simple in design, small in size, easy to move and operate, and suitable for laboratory and field use.

[0008] 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.

[0009] By adopting the above technical solution, the cooperation between the drive motor and the transmission shaft is achieved, which can ensure the synchronous rotation of the first clamping tube and the second clamping tube. Specifically, the drive motor provides stable rotational power, and the first transmission member and the second transmission member on the transmission shaft are connected to the first clamping tube and the second clamping tube respectively, 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 during the coating removal process, but also avoids the risk of capillary distortion or breakage due to asynchrony.

[0010] 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 drive motor; a first follower adapted to the first transmission member is provided on the first clamping tube, and a second follower adapted to the second transmission member is provided on the second clamping tube; the first transmission member and the first follower are connected via a first transmission belt, and the second transmission member and the second follower are connected via a second transmission belt.

[0011] By adopting the above technical solution, this design ensures that the two clamping tubes can rotate precisely and synchronously, avoiding the problem of capillary distortion or breakage caused by asynchrony, and improving the stability and reliability of the equipment.

[0012] Optionally, the axes of the first clamping tube and the second clamping tube are both provided with through channels arranged along the length direction; the capillary is fixed in the through channels, and the middle sections of the first clamping tube and the second clamping tube are both provided with semicircular cutouts.

[0013] By adopting the above technical solution, the capillary can be easily fixed and rotated stably. Specifically, the axes of the first clamping tube and the second clamping tube are provided with through channels arranged along the length direction, ensuring that the capillary can be smoothly inserted and fixed therein, thereby improving the operational convenience and stability of the device; the middle sections of the first clamping tube and the second clamping tube are provided with semicircular cutouts, which provide a larger operating space, facilitate observation and fixation of the state of the capillary, and ensure the accuracy of coating removal.

[0014] Optionally, a cover plate for fixing the capillary is provided in the semicircular cutout, and a flexible rubber pad is provided between the cover plate and the through channel.

[0015] By adopting the above technical solution, mainly for capillaries that are not easy to bend, the diameter of the through channel can be adapted to the diameter of the capillary, and the capillary can be fixed between the first clamping tube and the second clamping tube through the cover plate, and the axis of the capillary can be guaranteed 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 from damage, and ensure that the capillary will not be damaged by hard contact during the fixing and rotation process; at the same time, the flexible rubber pad can also improve the stability of the capillary fixation, avoid displacement of the capillary during laser coating removal, and ensure the accuracy and consistency of coating removal.

[0016] Optionally, the first clamping tube and the second clamping tube are both provided with a floating positioning device for confining the capillary on the rotation axis; the floating positioning device includes a fixed sleeve, an elastic member and a sliding sleeve, the inner wall of the fixed sleeve is evenly distributed with at least three hinge seats along the circumference, a floating rod is hinged on the hinge seat, 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, so as to drive the positioning roller to move toward the axis of the fixed sleeve.

[0017] By adopting the above technical solution, the capillary can maintain precise axial positioning during the clamping process, avoiding uneven coating removal or damage due to offset; the floating positioning device can adapt to capillaries of different diameters, ensuring that each capillary can be stably fixed on its axis during rotation, thereby improving the accuracy and reliability of coating removal; at the same time, the design of the device makes clamping and unloading capillaries more convenient, reducing operation time and labor intensity.

[0018] Further optionally, the end of the first clamping tube is provided with a gas guide mechanism for introducing gas into the lumen of the capillary to increase the gas pressure in the lumen of the capillary; the end of the second clamping tube is provided with a sealing cover for sealing the capillary.

[0019] 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 and deforming due to its own gravity or uneven external pressure during laser impact. Specifically, for a softer capillary, the middle laser irradiation area has no support and will sag under the action of its own gravity, causing the capillary to bend and deform. When the capillary rotates, it is not conducive to the alignment of the laser, and when the laser irradiates the coating on the outer wall of the capillary, the local high temperature will cause an instantaneous pressure change on the surface of the capillary. If there is not enough internal support, the capillary may be deformed or even broken due to uneven force. By arranging a gas guide mechanism at the end of the first clamping tube, gas can be injected into the capillary, and the sealing cover design at the end of the second clamping tube ensures that the gas will not leak from the other end, so that the air pressure in the lumen is always maintained at a high level, so as to form an expansion effect in the lumen of the capillary, straighten the wall of the capillary, ensure that the capillary can still maintain a stable state when it is impacted by the laser, and avoid bending caused by external pressure differences.

[0020] Further optionally, the air guide mechanism includes a cylinder body arranged at the end of the first clamping tube and connected to the through channel, a piston being slidably connected in the cylinder body, a threaded push rod being rotatably connected to the tail of the piston, and the threaded push rod being threadedly connected to a threaded cover arranged at the tail end of the cylinder body; the sealing cover is hinged at the end of the second clamping tube, and the end of the second clamping tube is provided with a locking mechanism for fixing the sealing cover, and a first sealing sleeve is provided in the through channel close to the cylinder body, and a second sealing sleeve is provided in the through channel close to the sealing cover.

[0021] By adopting the above technical scheme, the gas guide mechanism has a simple structure and low manufacturing cost, and can effectively introduce gas into the interior of the capillary, thereby increasing the air pressure in the capillary cavity, which helps to stabilize the position of the capillary during laser coating removal and avoid displacement caused by external vibration or impact; at the same time, the design of the sealing cover ensures the sealing of the end of the capillary, prevents gas leakage, and further improves the reliability and stability of the system. The setting of the first sealing sleeve and the second sealing sleeve effectively prevents gas from overflowing from the gap between the through channel and the capillary, thereby enhancing the sealing performance of the entire device.

[0022] Optionally, the laser irradiation device includes a laser generator mounted on a guide seat, the guide seat is slidably connected to a guide rail, and the guide seat is moved by power provided by a pushing mechanism; the image acquisition device includes an electron microscope fixed on a slide seat, the slide seat is slidably connected to a slide rod, and a fastener is provided on the slide seat; the fastener is used to fix the slide seat to the slide rod.

[0023] By adopting the above technical solution, the laser generator can be accurately moved to the desired position to ensure that the laser beam is irradiated on the target area of ​​the outer wall of the capillary and the coating is effectively removed. At the same time, the electron microscope of the image acquisition device can monitor the coating removal in real time during the laser removal process to ensure that the removal effect meets the expected standards. This design not only improves the accuracy and efficiency of coating removal, but also avoids the problem of multiple wiping or post-burning cleaning in traditional methods, simplifies the operation process, and reduces the impact on the environment.

[0024] Further optionally, the pushing mechanism includes a pushing motor and a screw rod, and the guide seat is provided with a threaded hole adapted to the screw rod.

[0025] By adopting the above technical solution, the push mechanism composed of the push motor and the screw can accurately control the moving distance of the slide, ensuring that the laser moves accurately in the axial direction of the capillary, thereby achieving accurate removal of the outer wall coating of the target area. The threaded hole design adapted to the screw enables the slide to move smoothly under the drive of the screw, improving the operational stability and reliability of the entire device.

[0026] In summary, the present application includes at least one of the following beneficial technical effects: 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. 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; The present application can adapt to capillaries of different diameters, ensuring that each capillary can be stably fixed on its axis during rotation, thereby improving the accuracy and reliability of coating removal; 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

[0027] 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; Figure 2 is a schematic structural diagram of the first clamping tube in Embodiment 1; Figure 3 is a schematic structural diagram of the cover plate in Embodiment 1; Figure 4 is a schematic structural diagram of the second clamping tube in Embodiment 1; Figure 5 is a schematic diagram of the structure of the laser irradiation described in Example 1; Figure 6 is a schematic structural diagram of the guide seat described in the first embodiment; Figure 7 is a structural schematic diagram of the image acquisition device described in Example 1; Figure 8 is a schematic diagram of the arrangement structure of the first clamping tube and the second clamping tube in the second embodiment; Fig. 9 is a side structural schematic diagram of the floating positioning device described in Example 2; Fig.10 is a front view structural schematic diagram of the floating positioning device described in the second embodiment; Fig.11 is a schematic diagram of the arrangement structure of the first clamping tube and the second clamping tube in the third embodiment; Fig.12 is a schematic structural diagram of the floating positioning device described in Example 3; Fig.13 It is a schematic diagram of the structure of the sealing cover described in the third embodiment.

[0028] 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 disk; 42, driving motor; 43, first transmission belt; 44, second transmission belt; 5, laser irradiation device; 51, laser generator; 511, adjustment plate; 512, arc-shaped limit groove; 52, guide seat; 521, locking bolt hole; 522, threaded hole; 53, guide rail; 54, lead screw; 55, push motor; 6, image acquisition device; 61, electron microscope mirror; 62, slide rod; 63, slide seat; 631, fastener; 7, floating positioning device; 71, fixed sleeve; 72, hinged seat; 73, floating rod; 74, positioning roller; 75, slide sleeve; 76, elastic member; 77, snap ring; 8, air guide mechanism; 81, cylinder body; 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; 11, through channel; 12, semicircular cut; 13, cover plate; 131, buckle; 14, flexible rubber pad. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions of the various embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application. Embodiment 1

[0030] Reference Figure 1 The embodiment of the present application discloses a device for removing the coating on the outer wall of a capillary, including a clamping device, a driving device 4, a laser irradiation device 5 and an image acquisition device 6, wherein the clamping device is used to fix the capillary 10, including a first clamping tube 2 and a second clamping tube 3 rotatably connected to a base 1, the two clamping tubes are coaxially arranged, and an operating 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 use the laser beam to irradiate a target area on the outer wall of the capillary 10 to remove the coating on the outer wall of the target area; the image acquisition device 6 uses a visual sensor to obtain an image of the target area to determine whether the outer wall coating of the target area is removed.

[0031] Specifically, refer to Figure 1The clamping device includes two coaxially arranged clamping tubes, namely a first clamping tube 2 and a second clamping tube 3; the two clamping tubes are fixed to the base 1 through bearings and can rotate freely in the axial direction; a first transmission member 411, specifically a synchronous pulley, is fixed to the first clamping tube 2, and a second transmission member 412, which is also a synchronous pulley, is fixed to the second clamping tube 3. The driving device 4 includes a driving motor 42 and a transmission shaft 41, and 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 second clamping tube 3 to rotate, and the two synchronous pulleys are 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, respectively. The transmission member 412 allows the two clamping tubes to rotate synchronously; the driving motor 42 can be a stepper motor with a self-locking function, and there is also a third transmission member on the transmission shaft 41, which is connected to the stepper motor with a self-locking function through a synchronous belt to ensure that the clamping tube will not rotate easily when the capillary 10 is manually clamped, thereby facilitating clamping; it should be pointed out that a worm gear transmission method can also be adopted between the transmission shaft 41 and the stepper motor. The worm gear mechanism has a higher reduction ratio, so that the system can operate at a lower speed, reduce energy consumption, and extend the service life of the equipment. The worm 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 by the encoder for precise control of the transmission rod angle in the later stage.

[0032] Among them, refer to Figure 2~Figure 4 The axes of the first clamping tube 2 and the second clamping tube 3 are both provided with a through channel 11 arranged along the length direction, and the capillary 10 is fixed in this through channel 11; in order to facilitate the fixation and observation of the capillary 10, the middle sections of the first clamping tube 2 and the second clamping tube 3 are both provided with a semicircular cutout 12; in order to prevent the capillary 10 from being damaged during the clamping process, a cover plate 13 for fixing the capillary 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, specifically silicone foam; this can not only ensure the firm fixation of the capillary 10, but also reduce the damage of the capillary 10 caused by hard contact; in order to facilitate the fixation of the cover plate 13 and the clamping tube, a clamping plate is provided on the cover plate 13, and the first clamping tube 2 and the second clamping tube 3 are provided with a clamping groove.

[0033] Reference Figure 5~Figure 6The laser irradiation device 5 includes a laser generator 51 mounted on a guide seat 52, the guide seat 52 is slidably connected to a guide rail 53, and the guide seat 52 is powered to move by a pushing mechanism; the pushing mechanism includes a pushing motor 55 and a screw, and a threaded hole 522 adapted to the screw is provided on the guide seat 52. Such a design can accurately control the moving distance of the laser, thereby ensuring that the position and length of the coating removal are very accurate; in order to facilitate the adjustment of the irradiation angle of the laser generator 51, the laser generator 51 is fixed on the adjustment plate 5 11, and one end of the adjustment plate 511 is hinged on the guide seat 52 and can rotate on the guide seat 52, and an arc-shaped limit hole is provided at the end of the adjustment plate 511 away from the hinge point, and a locking bolt hole 521 adapted to the arc-shaped limit hole is provided on the guide seat 52, and a fastening bolt is threadedly connected in the locking bolt hole 521; wherein, the laser generator 51 adopts a blue laser with a wavelength of 445nm and a working power of 30mW, which can efficiently remove the polyimide coating on the outer wall of the capillary 10 without causing damage to the capillary 10.

[0034] Reference Figure 7 The image acquisition device 6 includes an electron microscope 61 fixed on a slide seat 63. The slide seat 63 is provided with an open sliding hole adapted to the slide rod 62, and is slidably connected to the slide rod 62 through the open sliding hole. The position of the electron microscope 61 can be adjusted as needed. After the adjustment is completed, the slide seat 63 can be locked by setting a fastener 631 at the opening of the open sliding hole to securely fix the slide seat 63 on the slide rod 62. Specifically, the fastener 631 is a bolt; when the laser irradiates the capillary 10, the microscope transmits the image to the computer in real time, and the program automatically checks and determines whether the coating has been completely removed; if there is residual coating, the laser position is adjusted and the impact is continued until it is completely removed.

[0035] 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 by the cover plate 13 and the flexible rubber pad 14. Then start the stepper motor to 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 irradiate the laser beam 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 in real time and transmits the image to the computer, and the program automatically checks the coating removal. If it is not completely removed, adjust the laser position and continue to remove; the whole process has a high degree of automation, is easy to operate, has a good coating removal effect, does not require chemical reagents, and is environmentally friendly and safe. Embodiment 2

[0036] Reference Figure 8~Figure 10 The difference between this embodiment and the first embodiment is that a floating positioning device 7 is added to enhance the applicability of the device and can accurately position capillaries 10 of different diameters.

[0037] Specifically, refer to Figure 9~Figure 10 The first clamping tube 2 and the second clamping tube 3 are both provided with a floating positioning device 7 for limiting the capillary 10 on the rotation axis, and the floating positioning device 7 includes 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, and 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 toward the axis of the fixed sleeve 71, thereby firmly fixing the capillary 10 on the center line.

[0038] The implementation principle of this embodiment is as follows: in addition to the basic functions of the above-mentioned embodiments, 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 be inserted in the axial direction of the clamping tube and cooperatively limited in the radial direction to ensure that the capillary 10 always remains on the center line during rotation, avoiding uneven coating removal due to offset, and can well transmit the rotational torque, so that the capillary 10 can rotate with the clamping tube. Embodiment 3

[0039] Reference Figure 11~Figure 13 The difference between this embodiment and the second embodiment is that an air guide mechanism 8 is added to enhance the air pressure in the lumen of the capillary 10, thereby enhancing the rigidity and stability of the capillary 10, and ensuring that the capillary 10 maintains a stable posture during rotation even if the capillary 10 is slightly bent.

[0040] Specifically, refer to Fig.12 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 10 to increase the gas pressure in the lumen of the capillary 10; the gas guide mechanism 8 includes 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, and a threaded push rod 83 is rotatably connected to the rear end of the piston 82, and the threaded push rod 83 is threadedly connected to a threaded cover 84 arranged at the rear end of the cylinder body 81; by rotating the threaded push rod 83, the piston 82 is pushed forward, gas is introduced into the interior of the capillary 10, and the gas pressure in the lumen is increased; this helps to enhance the rigidity and stability of the capillary 10 and prevent uneven removal of the coating due to vibration during laser irradiation; in order to position the capillary 10, a positioning grid 85 is also fixed at the bottom of the cylinder body 81.

[0041] Reference Fig.13A sealing cover 9 for sealing the capillary 10 is provided at the end of the second clamping tube 3; 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, a butterfly nut is threadedly connected to the bolt, and an opening card matched with the butterfly bolt buckle is provided on the sealing cover 9; 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, which not only ensures the effective introduction of gas, but also prevents gas leakage, thereby improving the reliability and safety of the system.

[0042] The implementation principle of the embodiment of the present application is: the gas guide mechanism 8 introduces gas into the capillary 10, thereby enhancing the rigidity and stability of the capillary 10 and reducing the adverse effects caused by vibration. These improvements make the entire system more reliable and the coating removal effect better.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present 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; 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 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).

5. The device for removing the coating on the outer wall of a capillary according to claim 4, characterized in that: 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).

6. The device for removing the coating on the outer wall of a capillary according to claim 4, characterized in that: The first clamping tube (2) and the second clamping tube (3) are both provided with a floating positioning device (7) for limiting the capillary (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 hinged on 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).

7. The device for removing the coating on the outer wall of a capillary according to claim 6, 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).

8. The device for removing the coating on the outer wall of a capillary according to claim 7, 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).

9. 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).

10. The device for removing the coating on the outer wall of a capillary according to claim 9, 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).

Images