A liquid chromatograph sampling rod processing device

Abstract

The application relates to the technical field of gas chromatograph spare part processing equipment, and discloses a liquid chromatograph sampling rod processing device, which comprises a bottom plate, an auxiliary supporting mechanism and a driving mechanism are arranged on the top of the bottom plate, a burr removing mechanism is arranged on the driving mechanism, the driving mechanism comprises a supporting plate, the bottom of the supporting plate is fixedly connected to the top of the bottom plate, a servo motor C is fixedly connected to the side of the supporting plate, the burr removing mechanism comprises a hard alloy core shaft, a fixed sleeve ball and a spiral groove on the surface of the core shaft, the burr removing mechanism can realize the effect that the cam pushes and drives the core shaft to penetrate into the pipe to serve as internal rigid support, and when the core shaft retreats, the spiral blade can be forced to rotate at high speed to instantaneously spin and cut the inner hole edge to achieve the effect of scraping off, so that the problem that the in-turned burr generated after the drill bit cuts through the micro tube wall is difficult to completely cut off and peel off and is prone to sticking to the inner wall to cause subsequent liquid blocking and even equipment shutdown in the prior art can be solved.

Description

Technical Field

[0001] This invention relates to the field of gas chromatograph component processing equipment, specifically a liquid chromatograph sampling rod processing device. Background Technology

[0002] The sampling rod of a liquid chromatograph is a core precision flow guiding component of the chromatographic fluid delivery system, used for the stable delivery of trace reagents. The smoothness of the inner wall of the fitting and the quality of the port molding directly affect the detection accuracy and the service life of the equipment. In actual production, the end face of the hollow sampling rod needs to be drilled to form a fluid inlet and outlet channel. The fitting is mostly made of thin-walled stainless steel, with a small aperture and thin wall thickness. Deburring the port opening is a key process to ensure product qualification rate.

[0003] The current industry standard processing method involves segmented and independent operations: first, the sampling rod is placed on a simple V-shaped base, and the outer wall of the pipe is clamped and positioned by the top pressure block. Then, the micro drill bit is fed by the electric telescopic rod to drill a through hole at the end of the sampling rod. After the drilling is completed and the drill bit is retracted, a smooth cylindrical guide bar is manually pushed into the inside of the pipe. The metal flash generated during hole processing is cleaned by the reciprocating linear pushing and pulling friction of the guide bar. After processing is completed, the clamp is released and the part is removed. Each process of the entire processing fixture is independent and separate, with low automation integration, cumbersome processing flow, and the fixture structure lacks a stable clamping structure suitable for slender and thin-walled pipes, resulting in many processing defects.

[0004] When the drill bit drills the end of the sampling rod, the metal is compressed, torn, and deformed, forming a continuous ring of inward-turned burrs at the opening of the inner hole of the fitting. The root of the burrs is connected to the tube base. Existing ordinary cylindrical scrubbing rods can only perform linear reciprocating scraping and do not have the ability to rotate and cut. They can only squeeze the protruding burrs to adhere to the inner wall of the tube and cannot completely cut and peel them off from the root of the burrs. The residual burrs adhering to the wall are prone to lifting and breaking under long-term flushing by reagent fluid. The detached metal fragments will block the small flow channels of the sampling rod, causing poor fluid delivery in the liquid chromatograph. In severe cases, it will directly lead to blockage of the instrument tubing and failure of the entire instrument.

[0005] Slender, thin-walled sampling rods rely solely on single-point clamping for fixation. During drilling and deburring, the tube is prone to radial vibration, causing tilting of the end face opening, pressure-induced indentation and deformation of the tube wall, and poor dimensional consistency among parts in the same batch. Conventional external air blowing for debris removal only allows airflow from the outer end of the tube, leaving fine metal debris trapped in the dead corner at the bottom of the inner hole, unable to be completely and directionally discharged, resulting in the tube's internal cleanliness failing to meet the standards for chromatographic components. Traditional deburring components rely solely on linear friction to remove burrs, leading to unstable burr removal and time-consuming and labor-intensive manual cleaning, which is insufficient to meet the requirements for automated mass production of precision sampling rods. Summary of the Invention

[0006] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a liquid chromatograph sampling rod processing device, which solves the problems of low automation, inability to completely remove burrs from the end inner hole, easy vibration and deformation during thin-walled pipe processing, and incomplete cleaning of inner hole debris in existing technologies.

[0007] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a liquid chromatograph sampling rod processing device, comprising a base plate, an auxiliary support mechanism and a driving mechanism disposed on the top of the base plate, a burr removal mechanism disposed on the driving mechanism, the driving mechanism including a support plate, the bottom of the support plate being fixedly connected to the top of the base plate, a servo motor C being fixedly connected to the side of the support plate, a rotating rod B being fixedly connected to the output shaft of the servo motor C, and the burr removal mechanism including an elliptical cam A, the inner wall of the elliptical cam A being fixedly connected to the outer surface of the rotating rod B, and the outer side of the elliptical cam A... A roller is abutted against the edge of the shaft. A U-shaped plate is rotatably connected to the central axis of the roller. A carbide mandrel is fixedly connected to the side wall of the U-shaped plate. A compression ring is fixedly connected to the outer surface of the carbide mandrel. A return spring B abuts against the side of the compression ring. The inner side of the return spring B is sleeved on the outer surface of the carbide mandrel. A fixing sleeve is sleeved on the outer side of the carbide mandrel. A ball is embedded in the inner side wall of the fixing sleeve. A spiral groove is formed on the outer surface of the carbide mandrel. The surface of the ball is slidably connected to the inner wall of the spiral groove. A spiral blade is fixedly connected to the outer surface of the end of the carbide mandrel.

[0008] Preferably, the surface of the rotating rod B is provided with a debris cleaning mechanism, which includes an elliptical cam B. The inner wall of the elliptical cam B is fixedly connected to the outer surface of the rotating rod B. The outer edge of the elliptical cam B abuts against a pressure plate B. A piston rod is fixedly connected to the bottom of the pressure plate B. A spring C is sleeved on the outer surface of the piston rod. A sealing plug is fixedly connected to the bottom end of the piston rod. The outer edge of the sealing plug is slidably connected to the inner wall of the gas tank. The bottom of the gas tank is fixedly connected to the top of the base plate. The outer surface of the gas tank is connected to an inlet one-way valve and an outlet valve. The system includes an air check valve, the output end of which is connected to an air outlet hose, and the output end of an air inlet check valve, which is connected to an air inlet pipe. The end of the air outlet hose is connected to an L-shaped air inlet channel, which is located inside the carbide mandrel. The output end of the L-shaped air inlet channel is connected to the inner cavity of the shaft, which is located at the center of the carbide mandrel. The outer surface of the carbide mandrel has a Venturi-shaped groove, and the inner wall of the Venturi-shaped groove has an inclined conical nozzle. The inner end of the inclined conical nozzle is connected to the inner cavity of the shaft.

[0009] Preferably, the auxiliary support mechanism includes a slide rail, the bottom of which is fixedly connected to the top of the base plate. A follower support seat is slidably connected to the outer surface of the slide rail. An L-shaped connecting plate is fixedly connected to the side of the follower support seat. A threaded sleeve is fixedly connected to the other side of the L-shaped connecting plate. A lead screw is threadedly connected to the inner wall of the threaded sleeve. A servo motor B is fixedly connected to the end of the lead screw. A support frame is fixedly connected to the side of the servo motor B. The bottom of the support frame is fixedly connected to the top of the base plate.

[0010] Preferably, a switching mechanism is provided on the top of the base plate, and an end face drilling mechanism is provided on the switching mechanism. The switching mechanism includes a U-shaped bracket, the bottom of which is fixedly connected to the base plate. A servo motor D is fixedly connected to the ear end of the U-shaped bracket. The output shaft of the servo motor D is fixedly connected to a turntable. The inner wall of the turntable is fixedly connected to the outer surface of the fixed sleeve. The end face drilling mechanism includes an electric telescopic rod. The fixed end of the electric telescopic rod is fixedly connected to the side of the turntable. The telescopic end of the electric telescopic rod is fixedly connected to a chassis. The output end of the chassis is drivenly connected to a drill bit.

[0011] Preferably, a cam locking mechanism is provided on the top of the base plate. The cam locking mechanism includes a fixed V-shaped base, the bottom of which is fixedly connected to the top of the base plate. A vertical plate is fixedly connected to the top of the base plate, and a horizontal plate is fixedly connected to the side wall of the vertical plate. A movable rod is slidably inserted through the internal opening of the horizontal plate. A V-shaped guide block is fixedly connected to the bottom end of the movable rod, and the V-shaped guide block is located directly above the fixed V-shaped base. A pressure plate A is fixedly connected to the top end of the movable rod. A return spring A is sleeved on the outer surface of the movable rod. The top end of the return spring A is fixedly connected to the bottom surface of the pressure plate A, and the bottom end of the return spring A is fixedly connected to the top surface of the horizontal plate. A servo motor A is fixedly connected to the top of the side wall of the vertical plate. A rotating rod A is fixedly connected to the output shaft of the servo motor A. An elliptical cam C is fixedly connected to the outer surface of the rotating rod A, and the bottom edge of the elliptical cam C abuts against the top of the pressure plate A.

[0012] Preferably, the top of the fixed V-shaped base is provided with a V-shaped groove structure, the bottom of the V-shaped guide block is provided with an inverted V-shaped groove structure, the inner surface of the groove structure is adapted to the outer surface of the sampling rod, and the side of the base plate is fixedly connected with an extension plate with a rectangular flat structure.

[0013] Preferably, the gas tank has a hollow cylindrical structure, the sealing plug has a disc-shaped structure that matches the cross-section of the gas tank's inner cavity, the inclined conical nozzle has a conical channel structure with the diameter gradually decreasing from the inside to the outside, and the spring C has a spiral coiled structure.

[0014] Preferably, the cemented carbide mandrel has a slender cylindrical rod structure, the spiral groove has a groove structure that spirals around the outer wall of the cemented carbide mandrel, the U-shaped plate has a U-shaped plate structure with one side open, and the roller has a cylindrical structure.

[0015] Preferably, the support frame is an inverted U-shaped frame structure, the threaded sleeve is a cylindrical tube structure with internal threads, the L-shaped connecting plate is a plate structure with a 90-degree bending angle, and the bottom of the follower support seat is provided with a strip groove structure that matches the slide rail.

[0016] Preferably, the turntable has a flat disc-shaped structure with a central rotating shaft, the housing has a hollow rectangular box structure, and the surface of the drill bit is machined with a chip removal groove structure arranged in a spiral.

[0017] (III) Beneficial Effects Compared with the prior art, the present invention provides a liquid chromatograph sampling rod processing device, which has the following beneficial effects: 1. This liquid chromatograph sampling rod processing device, through a burr removal mechanism including a carbide mandrel, a fixed sleeve ball bearing, and a spiral groove on the mandrel surface, achieves the effect of using a cam to push and drive the mandrel to penetrate into the tube to act as an internal rigid support, and using the spiral pair to force high-speed rotation during retraction to make the spiral blade instantly spin-cut and scrape the inner hole edge. This solves the problem in the prior art that the inward burrs generated after the drill bit cuts through the micro tube wall are difficult to completely cut off and peel off with conventional cleaning rods, and are easy to stick to the inner wall, causing subsequent liquid flow obstruction or even equipment failure.

[0018] 2. This liquid chromatograph sampling rod processing device, through a debris cleaning mechanism including a gas tank, a linkage piston sealing plug, and an inclined conical nozzle at the end of the mandrel, achieves the effect of generating instantaneous high-pressure airflow by synchronously pressing down the gas tank using the phase difference of the cam, and introducing it into the micro Venturi-shaped nozzle through the inner cavity of the mandrel for powerful directional waste purging from the inside out. This solves the problem in the prior art that when using external positive pressure air blowing to clean small blind end hole areas, it is easy to cause airflow backflow, which will cause the cut metal waste to be stuck in the dead corner and cannot be completely recovered.

[0019] 3. This liquid chromatograph sampling rod processing device, through a cam locking mechanism including a fixed V-shaped base, an elliptical cam, and a V-shaped guide block, achieves the effect of using the cam to overcome the spring force to make the guide block and the base fit together seamlessly from the outside, clamping and precisely guiding the sampling rod during drilling. This solves the problem in the prior art that slender hollow sampling rods are prone to micro-vibration when drilled on the side, causing the hole to deviate and the tube wall to be flattened and deformed under pressure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a liquid chromatograph sampling rod processing device proposed in this invention; Figure 2 This is a partial structural schematic diagram of the driving mechanism, end face drilling mechanism, switching mechanism, and burr removal mechanism of the present invention; Figure 3 This is a schematic cross-sectional view of the fixed sleeve in the burr removal mechanism of the present invention. Figure 4 This is a top sectional view of the U-shaped plate, air outlet hose, and cemented carbide mandrel of the present invention; Figure 5 This is a schematic cross-sectional view of the gas tank in the debris cleaning mechanism of the present invention; Figure 6 This is a partial top sectional view of the carbide mandrel in the burr removal mechanism of the present invention; Figure 7 This is a schematic diagram of the cam locking mechanism and auxiliary support mechanism of the present invention.

[0021] In the diagram: 1. Base plate; 2. Extension plate; 3. Cam locking mechanism; 301. Vertical plate; 302. Servo motor A; 303. Rotating rod A; 304. Elliptical cam C; 305. Pressure plate A; 306. Return spring A; 307. Horizontal plate; 308. Movable rod; 309. V-shaped guide block; 3010. Fixed V-shaped base; 4. Auxiliary support mechanism; 401. Support frame; 402. Servo motor B; 403. Lead screw; 404. Threaded sleeve; 405. L-shaped connecting plate; 406. Follow-up support seat; 407. Slide rail; 5. Burr removal mechanism; 501. Carbide mandrel; 502. Spiral blade; 505. Fixed sleeve; 506. Ball bearing; 507. Spiral groove; 508. Return spring B; 509. Extrusion ring; 5010. U-shaped plate; 5011. 5012. Roller; 6. Elliptical Cam A; 6. Debris Cleaning Mechanism; 601. Air Tank; 602. Piston Rod; 603. Sealing Plug; 604. Air Outlet Hose; 605. Air Inlet Pipe; 606. Air Inlet Check Valve; 607. Air Outlet Check Valve; 608. Venturi-shaped External Groove; 609. Elliptical Cam B; 6010. L-shaped Air Inlet Channel; 6011. Shaft Inner Cavity; 6012. Inclined Conical Nozzle; 6013. Pressure Plate B; 6014. Spring C; 7. Sampling Rod; 8. Drive Mechanism; 801. Support Plate; 802. Servo Motor C; 803. Rotating Rod B; 9. End Face Drilling Mechanism; 901. Electric Telescopic Rod; 902. Chassis; 903. Drill Bit; 10. Switching Mechanism; 1001. U-shaped Bracket; 1002. Servo Motor D; 1003. Turntable. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Please see Figure 1 - Figure 7 This invention provides a liquid chromatograph sampling rod processing device, including a base plate 1. An auxiliary support mechanism 4 and a drive mechanism 8 are disposed on the top of the base plate 1. A burr removal mechanism 5 is disposed on the drive mechanism 8. The drive mechanism 8 includes a support plate 801, the bottom of which is fixedly connected to the top of the base plate 1. A servo motor C802 is fixedly connected to the side of the support plate 801. A rotating rod B803 is fixedly connected to the output shaft of the servo motor C802. The burr removal mechanism 5 includes an elliptical cam A5012, the inner wall of which is fixedly connected to the outer surface of the rotating rod B803. A roller 5011 abuts against the outer edge of the elliptical cam A5012. The roller 5011 has a cylindrical structure. A U-shaped plate 5010 is rotatably connected to the central axis of the roller 5011. The U-shaped plate 5010 is open on one side. The U-shaped plate structure has a carbide mandrel 501 fixedly connected to the side wall of the U-shaped plate 5010. The carbide mandrel 501 is a slender cylindrical rod structure. A compression ring 509 is fixedly connected to the outer surface of the carbide mandrel 501. A return spring B508 abuts against the side of the compression ring 509. The inner side of the return spring B508 is sleeved on the outer surface of the carbide mandrel 501. A fixing sleeve 505 is sleeved on the outer side of the carbide mandrel 501. A ball bearing 506 is embedded in the inner wall of the fixing sleeve 505. A spiral groove 507 is formed on the outer surface of the carbide mandrel 501. The spiral groove 507 is a groove structure that spirals along the outer wall of the carbide mandrel 501. The surface of the ball bearing 506 is slidably connected to the inner wall of the spiral groove 507. A spiral blade 502 is fixedly connected to the outer surface of the end of the carbide mandrel 501.

[0024] It is worth noting that the surface of the rotating rod B803 is provided with a debris cleaning mechanism 6, which includes an elliptical cam B609. The inner wall of the elliptical cam B609 is fixedly connected to the outer surface of the rotating rod B803. The outer edge of the elliptical cam B609 abuts against a pressure plate B6013. A piston rod 602 is fixedly connected to the bottom of the pressure plate B6013. A spring C6014 is sleeved on the outer surface of the piston rod 602. The spring C6014 has a spiral coiled structure. A sealing plug 603 is fixedly connected to the bottom end of the piston rod 602. The sealing plug 603 has a disc-shaped structure that matches the cross-section of the inner cavity of the gas tank 601. The outer edge of the sealing plug 603 is slidably connected to the inner wall of the gas tank 601. The gas tank 601 has a hollow cylindrical structure. The bottom of the gas tank 601 is fixedly connected to the top of the base plate 1. An inlet check valve 606 and an outlet check valve 607 are respectively connected to the outer surface of the gas tank 601. The output end of the outlet check valve 607 is connected to the outlet hose 604, and the output end of the inlet check valve 606 is connected to the inlet pipe 605. After the sealing plug 603 is reset upwards, air is introduced through the inlet pipe 605 and the inlet check valve 606 to fill the interior of the air tank 601. The end of the outlet hose 604 is connected to an L-shaped inlet channel 6010, which is located inside the carbide mandrel 501. The output of the L-shaped inlet channel 6010... The shaft is connected to an inner cavity 6011, which is located at the center of the carbide mandrel 501. A venturi-shaped outer groove 608 is formed on the outer surface of the carbide mandrel 501. An inclined conical nozzle 6012 is formed on the inner wall of the venturi-shaped outer groove 608. The inclined conical nozzle 6012 has a conical channel structure with the diameter gradually decreasing from the inside to the outside. The inner end of the inclined conical nozzle 6012 is connected to the inner cavity 6011.

[0025] Furthermore, the auxiliary support mechanism 4 includes a slide rail 407, the bottom of which is fixedly connected to the top of the base plate 1. A follower support 406 is slidably connected to the outer surface of the slide rail 407. The bottom of the follower support 406 is provided with a strip-shaped groove structure that matches the slide rail 407. An L-shaped connecting plate 405 is fixedly connected to the side of the follower support 406. The L-shaped connecting plate 405 has a plate structure with a 90-degree bend angle. A threaded sleeve 404 is fixedly connected to the other side of the L-shaped connecting plate 405. The threaded sleeve 404 has a cylindrical tube structure with internal threads. A lead screw 403 is threadedly connected to the inner wall of the threaded sleeve 404. A servo motor B402 is fixedly connected to the end of the lead screw 403. A support frame 401 is fixedly connected to the side of the servo motor B402. The support frame 401 has an inverted U-shaped frame structure. The bottom of the support frame 401 is fixedly connected to the top of the base plate 1.

[0026] It is worth noting that a switching mechanism 10 is provided on the top of the base plate 1. The switching mechanism 10 is provided with an end face drilling mechanism 9. The switching mechanism 10 includes a U-shaped bracket 1001. The bottom of the U-shaped bracket 1001 is fixedly connected to the top of the base plate 1. A servo motor D1002 is fixedly connected to the side of the U-shaped bracket 1001. The output shaft of the servo motor D1002 is fixedly connected to a turntable 1003. The turntable 1003 has a flat disc-shaped structure with a central rotating shaft. The inner wall of the turntable 1003 is fixedly connected to the outer surface of the fixed sleeve 505.

[0027] Furthermore, the end face drilling mechanism 9 includes an electric telescopic rod 901. The fixed end of the electric telescopic rod 901 is fixedly connected to the side of the turntable 1003, and the telescopic end of the electric telescopic rod 901 is fixedly connected to a housing 902. The housing 902 has a hollow rectangular box structure. The output end of the housing 902 is connected to a drill bit 903. The surface of the drill bit 903 is machined with a chip removal groove structure arranged in a spiral.

[0028] In this embodiment, a cam locking mechanism 3 is provided on the top of the base plate 1, and an extension plate 2 with a rectangular flat structure is fixedly connected to the side of the base plate 1. The cam locking mechanism 3 includes a fixed V-shaped base 3010, the top of which has a V-shaped groove structure, and the bottom of which is fixedly connected to the top of the base plate 1. A vertical plate 301 is fixedly connected to the top of the base plate 1, and a horizontal plate 307 is fixedly connected to the side wall of the vertical plate 301. A movable rod 308 is slidably inserted through the internal opening of the horizontal plate 307, and a V-shaped guide block 309 is fixedly connected to the bottom end of the movable rod 308. The bottom of the V-shaped guide block 309 has an inverted V-shaped groove structure. The inner surface of the structure is adapted to the outer surface of the sampling rod 7. The V-shaped guide block 309 is located directly above the fixed V-shaped base 3010. The top of the movable rod 308 is fixedly connected to the pressure plate A305. The outer surface of the movable rod 308 is fitted with a return spring A306. The top of the return spring A306 is fixedly connected to the bottom surface of the pressure plate A305. The bottom end of the return spring A306 is fixedly connected to the top surface of the horizontal plate 307. The top of the side wall of the vertical plate 301 is fixedly connected to the servo motor A302. The output shaft of the servo motor A302 is fixedly connected to the rotating rod A303. The outer surface of the rotating rod A303 is fixedly connected to the elliptical cam C304. The bottom edge of the elliptical cam C304 abuts against the top of the pressure plate A305.

[0029] Working principle: The operator first places the sampling rod 7 to be processed horizontally inside the V-shaped groove on the top of the fixed V-shaped base 3010 for initial positioning and support. Then, the servo motor C802 on the side of the base plate 1 is started. The output shaft of the servo motor C802 drives the rotating rod B803 to rotate. The rotation of the rotating rod B803 synchronously drives the elliptical cam A5012 and elliptical cam B609 fixed on its surface to rotate.

[0030] In the initial processing stage, utilizing the phase difference in installation angle between elliptical cams A5012 and B609, the protruding end of elliptical cam A5012 first rotates to abut against roller 5011. Elliptical cam A5012 presses against roller 5011, forcing U-shaped plate 5010 to drive carbide mandrel 501 to overcome the resistance of return spring B508 and move laterally towards sampling rod 7. During this process, carbide mandrel 501 precisely extends into the pre-drilled slot or inner hole inside sampling rod 7. The spiral blade 502 at the end of the carbide mandrel 501 mechanically scrapes against the inner wall of the sampling rod 7, thereby removing the inward burrs inside the hole. At the same time, since the surface of the carbide mandrel 501 has a spiral groove 507, and the ball bearings 506 on the inner wall of the fixing sleeve 505 slide and fit into the spiral groove 507, the carbide mandrel 501 is forced to rotate synchronously under the guidance of the spiral groove 507 during the transverse linear movement, so that the spiral blade 502 produces a high-speed spiral cutting effect on the burrs, thereby achieving complete cutting and cleaning of the burrs inside the hole.

[0031] After the above-mentioned rotary cutting action is completed, the protruding end of the elliptical cam B609 rotates to abut against the pressure plate B6013. The elliptical cam B609 presses down on the pressure plate B6013, causing the piston rod 602 to overcome the elastic force of the spring C6014 and drive the bottom sealing plug 603 to slide rapidly downward on the inner wall of the air tank 601. The sealing plug 603 presses down to compress the air inside the air tank 601, causing an instantaneous high-pressure airflow to be generated inside the air tank 601. This high-pressure airflow opens the outlet check valve 607, passes through the outlet hose 604, and flows into the L-shaped air inlet channel 6010 inside the hard alloy mandrel 501, and then enters the shaft inner cavity 6011. The high-pressure airflow entering the shaft inner cavity 6011... The flow is finally ejected at high speed from the inclined conical nozzle 6012 on the inner wall of the Venturi-shaped outer groove 608. Because the inclined conical nozzle 6012 has a conical channel structure with a diameter narrowing from the inside to the outside, the airflow velocity increases dramatically when ejected, generating a strong directional purging force. This blows the burr debris cut off by the spiral blade 502 outward along the slot of the sampling rod 7, preventing metal debris from being retained or blocked in the tube. When the rotating rod B803 continues to rotate so that the short shaft end of the cam corresponds to the roller 5011 and the pressure plate B6013, the return spring B508 and the spring C6014 release potential energy, causing the carbide spindle 501 and the piston rod 602 to automatically reset, completing a single action cycle.

[0032] Furthermore, when the processing position needs to be adjusted according to the sampling rod 7 of different lengths, the servo motor B402 is started. The servo motor B402 drives the lead screw 403 to rotate. Since the threaded sleeve 404 is threadedly connected to the lead screw 403, and the bottom of the follower support 406 is constrained by the guide rail 407 and cannot rotate circumferentially, the rotational kinetic energy of the lead screw 403 is converted into linear translation of the threaded sleeve 404. The threaded sleeve 404 drives the follower support 406 to slide along the slide rail 407 through the L-shaped connecting plate 405, thereby smoothly and accurately adjusting the end face. The relative processing distance between the drilling mechanism 9 and the sampling rod 7 is determined during this process. The servo motor D1002 is started, and the servo motor D1002 drives the turntable 1003 to rotate, so that the drill bit 903 fixed at the output end of the chassis 902 is precisely aligned with the end of the sampling rod 7. Then, the power source inside the chassis 902 is started to drive the drill bit 903 to rotate at high speed, and the electric telescopic rod 901 pushes the chassis 902 forward as a whole to complete the drilling or grooving operation on the end face of the sampling rod 7. After the operation is completed, the electric telescopic rod 901 drives the drill bit 903 to return to the initial position.

[0033] During drilling or deburring operations, the servo motor A302 at the top of the vertical plate 301 drives the rotating rod A303 and the elliptical cam 304 to rotate. The elliptical cam 304 presses down on the pressure plate A305, causing the movable rod 308 to move downward against the upward elastic force of the return spring A306. The bottom of the movable rod 308 drives the V-shaped guide block 309 to descend. The inverted V-shaped groove at the bottom of the block presses the sampling rod 7 firmly into the fixed V-shaped base 3010 below. Through the interlocking of the upper and lower V-shaped surfaces, any micro-vibration or radial offset generated by the sampling rod 7 during processing is completely eliminated, ensuring high-precision and stable processing of micro-tubes.

[0034] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

Claims

1. A sampling rod processing device for a liquid chromatograph, comprising a base plate (1), characterized in that: The top of the base plate (1) is provided with an auxiliary support mechanism (4) and a drive mechanism (8), and the drive mechanism (8) is provided with a burr removal mechanism (5). The drive mechanism (8) includes a support plate (801), the bottom of the support plate (801) is fixedly connected to the top of the base plate (1), a servo motor C (802) is fixedly connected to the side of the support plate (801), and a rotating rod B (803) is fixedly connected to the output shaft of the servo motor C (802). The burr removal mechanism (5) includes an elliptical cam A (5012), the inner wall of which is fixedly connected to the outer surface of the rotating rod B (803). A roller (5011) abuts against the outer edge of the elliptical cam A (5012). A U-shaped plate (5010) is rotatably connected to the central axis of the roller (5011). A carbide mandrel (501) is fixedly connected to the side wall of the U-shaped plate (5010). A compression ring (509) is fixedly connected to the outer surface of the carbide mandrel (501). The side of the compression ring (509)... A return spring B (508) is abutted against the surface of the carbide mandrel (501). The inner side of the return spring B (508) is sleeved on the outer surface of the carbide mandrel (501). A fixing sleeve (505) is sleeved on the outer side of the carbide mandrel (501). A ball (506) is embedded in the inner wall of the fixing sleeve (505). A spiral groove (507) is opened on the outer surface of the carbide mandrel (501). The surface of the ball (506) is slidably connected to the inner wall of the spiral groove (507). A spiral blade (502) is fixedly connected to the outer surface of the end of the carbide mandrel (501).

2. The liquid chromatograph sampling rod processing device according to claim 1, characterized in that: The surface of the rotating rod B (803) is provided with a debris cleaning mechanism (6); The debris cleaning mechanism (6) includes an elliptical cam B (609), the inner wall of which is fixedly connected to the outer surface of the rotating rod B (803). The outer edge of the elliptical cam B (609) abuts against a pressure plate B (6013). A piston rod (602) is fixedly connected to the bottom of the pressure plate B (6013). A spring C (6014) is sleeved on the outer surface of the piston rod (602). A sealing plug (603) is fixedly connected to the bottom end of the piston rod (602). The outer edge of the sealing plug (603) is slidably connected to the inner wall of the gas tank (601). The bottom of the gas tank (601) is fixedly connected to the top of the base plate (1). An inlet check valve (606) and an outlet check valve (607) are respectively connected to the outer surface of the gas tank (601). The outlet check valve (606) The output end of the 607) is connected to the air outlet hose (604), the output end of the air inlet check valve (606) is connected to the air inlet pipe (605), the end of the air outlet hose (604) is connected to the L-shaped air inlet channel (6010), the L-shaped air inlet channel (6010) is opened inside the carbide mandrel (501), the output end of the L-shaped air inlet channel (6010) is connected to the shaft cavity (6011), the shaft cavity (6011) is opened at the center of the carbide mandrel (501), the outer surface of the carbide mandrel (501) is provided with a Venturi-shaped outer groove (608), the inner side wall of the Venturi-shaped outer groove (608) is provided with an inclined conical nozzle (6012), and the inner end of the inclined conical nozzle (6012) is connected to the shaft cavity (6011).

3. The liquid chromatograph sampling rod processing device according to claim 1, characterized in that: The auxiliary support mechanism (4) includes a slide rail (407), the bottom of which is fixedly connected to the top of the base plate (1). A follower support seat (406) is slidably connected to the outer surface of the slide rail (407). An L-shaped connecting plate (405) is fixedly connected to the side of the follower support seat (406). A threaded sleeve (404) is fixedly connected to the other side of the L-shaped connecting plate (405). A lead screw (403) is threadedly connected to the inner wall of the threaded sleeve (404). A servo motor B (402) is fixedly connected to the end of the lead screw (403). A support frame (401) is fixedly connected to the side of the servo motor B (402). The bottom of the support frame (401) is fixedly connected to the top of the base plate (1).

4. The liquid chromatograph sampling rod processing device according to claim 1, characterized in that: The top of the base plate (1) is provided with a switching mechanism (10), and the switching mechanism (10) is provided with an end face drilling mechanism (9). The switching mechanism (10) includes a U-shaped bracket (1001), the bottom of which is fixedly connected to the base plate (1), and a servo motor D (1002) is fixedly connected to the ear end of the U-shaped bracket (1001). The output shaft of the servo motor D (1002) is fixedly connected to a turntable (1003), and the inner wall of the turntable (1003) is fixedly connected to the outer surface of the fixed sleeve (505). The end face drilling mechanism (9) includes an electric telescopic rod (901), the fixed end of which is fixedly connected to the side of the turntable (1003), the telescopic end of which is fixedly connected to a housing (902), and the output end of the housing (902) is connected to a drill bit (903).

5. The sampling rod processing device for a liquid chromatograph according to claim 1, characterized in that: The top of the base plate (1) is provided with a cam locking mechanism (3). The cam locking mechanism (3) includes a fixed V-shaped base (3010), the bottom of which is fixedly connected to the top of the base plate (1). A vertical plate (301) is fixedly connected to the top of the base plate (1). A horizontal plate (307) is fixedly connected to the side wall of the vertical plate (301). A movable rod (308) is slidably inserted through the internal opening of the horizontal plate (307). A V-shaped guide block (309) is fixedly connected to the bottom end of the movable rod (308). The V-shaped guide block (309) is located directly above the fixed V-shaped base (3010). A pressure plate A is fixedly connected to the top end of the movable rod (308). 305), the outer surface of the movable rod (308) is fitted with a return spring A (306), the top end of the return spring A (306) is fixedly connected to the bottom surface of the pressure plate A (305), the bottom end of the return spring A (306) is fixedly connected to the top surface of the horizontal plate (307), the top of the side wall of the vertical plate (301) is fixedly connected with a servo motor A (302), the output shaft of the servo motor A (302) is fixedly connected with a rotating rod A (303), the outer surface of the rotating rod A (303) is fixedly connected with an elliptical cam C (304), and the bottom edge of the elliptical cam C (304) abuts against the top of the pressure plate A (305).

6. The liquid chromatograph sampling rod processing device according to claim 5, characterized in that: The top of the fixed V-shaped base (3010) is provided with a V-shaped groove structure, and the bottom of the V-shaped guide block (309) is provided with an inverted V-shaped groove structure. The inner surface of the groove structure is adapted to the outer surface of the sampling rod (7). The side of the base plate (1) is fixedly connected with an extension plate (2) with a rectangular flat structure.

7. The liquid chromatograph sampling rod processing device according to claim 2, characterized in that: The gas tank (601) has a hollow cylindrical structure, the sealing plug (603) has a disc-shaped structure that matches the cross-section of the inner cavity of the gas tank (601), the inclined conical nozzle (6012) has a conical channel structure with the diameter gradually decreasing from the inside to the outside, and the spring C (6014) has a spiral coiled structure.

8. The liquid chromatograph sampling rod processing device according to claim 1, characterized in that: The carbide mandrel (501) has a slender cylindrical rod structure, the spiral groove (507) has a groove structure that spirals along the outer wall of the carbide mandrel (501), the U-shaped plate (5010) has a U-shaped plate structure with one side open, and the roller (5011) has a cylindrical structure.

9. The liquid chromatograph sampling rod processing device according to claim 3, characterized in that: The support frame (401) is an inverted U-shaped frame structure, the threaded sleeve (404) is a cylindrical tube structure with internal threads, the L-shaped connecting plate (405) is a plate structure with a 90-degree bending angle, and the bottom of the follower support (406) is provided with a strip groove structure that matches the slide rail (407).

10. The liquid chromatograph sampling rod processing device according to claim 4, characterized in that: The turntable (1003) has a flat disc-shaped structure with a central rotating shaft, the housing (902) has a hollow rectangular box structure, and the surface of the drill bit (903) is machined with a chip removal groove structure arranged in a spiral.

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