A guiding feeder for laser cutting of medical hypotube

Abstract

The application relates to the technical field of laser cutting processing, in particular to a guiding feeder for laser cutting of a medical hypotube, which comprises a laser cutting machine body, and a material pipe guiding mechanism is arranged at the upper end of the laser cutting machine body. By arranging an air injection guiding unit, a central high-speed airflow is formed, so that the hypotube is stably conveyed along a central path, direct contact friction between the hypotube and an extended outer pipe is reduced, dust on the surface of the hypotube can be assisted to be blown, and dynamic compensation for the hypotube conveying is realized to avoid distortion through the design of a floating guiding assembly. By arranging a tail end material clamping unit, the hypotube is flexibly clamped at the front end of laser cutting, so that the hypotube can be clamped and matched with feeding, pipe resonance can be offset, the edge defect rate can be reduced, the stable progress of the hypotube laser cutting operation is further ensured, and the cutting quality and production efficiency are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of laser cutting processing, in particular to a guiding feeder for laser cutting of medical hypotube. BACKGROUND

[0002] Hypotube is a core component of minimally invasive interventional instruments (such as catheters, guide wires, balloon catheter stents), usually made of 304 stainless steel or nickel-titanium alloy, and the guiding feeder is a key component of the laser cutting system. The guiding feeder is generally used to transport the pipe to be processed to the laser cutting station during cutting.

[0003] In the prior art, such as a very thin tube feeding rack and cutting equipment with publication number CN117506183A, a limiting mechanism is arranged close to the rib plate and located at the arrangement part, which is used to limit the very thin tube; the jacking mechanism includes a bearing surface for bearing the very thin tube, which is used to transport the very thin tube from the arrangement part to the conveying part; the first driving mechanism drives the jacking mechanism to move; the clamping mechanism includes clamping plates arranged oppositely and with adjustable spacing, which is used to clamp the very thin tube; the second driving mechanism drives the clamping mechanism to move along the direction of the very thin tube conveying; the control effect of the feeding device is improved, and the stability effect of the very thin tube during conveying is improved.

[0004] In order to solve the problem of shaking of the thin tube during feeding, the above-mentioned scheme adopts the mode of cooperation of the limiting mechanism and the jacking mechanism to realize the control of the very thin tube. However, in actual use process, when the thin tube is cut at high speed, resonance is easily caused to generate edge wavy defects, which increases the post-processing cost, and the conveying distance of the traditional thin tube is long, it is difficult to ensure that the thin tube does not collapse and twist during conveying, and the thin tube cannot be continuously guided and fed along the center path.

[0005] Therefore, the present application provides a guiding feeder for laser cutting of medical hypotube to solve the problem that the existing equipment is prone to resonance to generate edge wavy defects when cutting the pipe at high speed, which increases the post-processing cost, and the conveying distance of the traditional thin tube is long, it is difficult to ensure that the thin tube does not collapse and twist during conveying, and the thin tube cannot be continuously guided and fed along the center path. SUMMARY

[0006] In view of the deficiencies of the prior art, the present application aims to provide a guiding feeder for laser cutting of medical hypotube to solve the problems raised in the background art.

[0007] In order to achieve the above object, the present application provides the following technical scheme: a guiding feeder for laser cutting of medical hypotube, comprising a laser cutting machine body, an upper end of the laser cutting machine body is provided with a tube guiding mechanism, the tube guiding mechanism comprises a mounting unit, the mounting unit is composed of a guiding seat, a front cover plate and a rear cover plate, a center of the guiding seat is provided with an outer tube vibration suppression unit, the outer tube vibration suppression unit comprises a driving assembly and an outer tube abutting assembly, the outer tube abutting assembly comprises a fixed column, one side of the fixed column close to the front cover plate is provided with an air guide unit, one side of the fixed column close to the rear cover plate is provided with a tail end clamping unit, the air guide unit comprises a limiting sleeve, an extended outer tube, an inner sealing ring plate and a floating guiding assembly, an outer surface of the limiting sleeve is threadedly connected with an inner wall of the front cover plate, the tail end clamping unit comprises a threaded sleeve, a protective cover and a spring collet assembly, one end of the extended outer tube is fixedly connected with an inner wall of the limiting sleeve, the other end of the extended outer tube away from the limiting sleeve penetrates through the center of the inner side of the spring collet assembly.

[0008] Preferably, one end of the outer side of the limiting sleeve is fixedly connected with a fixed ring, an inner ring surface of the fixed ring is fixedly connected with an outer surface of the inner sealing ring plate, an outer ring surface of the inner sealing ring plate is rotatably connected with a turbine, and a gas guiding hole is through-connected on an outer ring side wall of the limiting sleeve.

[0009] Preferably, one side of the inner sealing ring plate close to the extended outer tube is fixedly connected with an air equalizing cover, the air equalizing cover is integrally formed with the inner sealing ring plate, one end of the extended outer tube close to the fixed ring is provided with a flow expansion cover, a flow cavity is formed in the inner side of the flow expansion cover and the outer side of the air equalizing cover, a reinforcing rib is fixedly installed on the inner side surface of the air equalizing cover, and a fixed ring is fixedly installed on the other end of the air equalizing cover away from the inner sealing ring plate.

[0010] Preferably, the floating guiding assembly comprises a curved floating plate, a swing rod and an elastic wire, one end of the curved floating plate is movably clamped with an outer surface of the fixed ring, the other end of the curved floating plate is rotatably connected with an outer surface of one end of the swing rod, the swing rod is in a ''√'' shaped plate structure, an inner side surface of the swing rod is fixedly connected with one end of the elastic wire, the other end of the elastic wire is fixedly connected with an inner side surface of the curved floating plate, and a abutting wheel is rotatably installed on the lower side surface of the swing rod.

[0011] Preferably, one end of the threaded sleeve is threadedly connected with an outer surface of the rear cover plate, an inner inclined surface is arranged on the inner side ring surface of the other end of the threaded sleeve away from the rear cover plate, a spring clamp is slidably connected with the outer surface of the threaded sleeve, an outer ring surface of the spring clamp is fixedly connected with an inner side ring surface of the protective cover, the protective cover is provided with an electric telescopic rod close to the rear cover plate, the electric telescopic rod is fixedly installed on the outer side of the rear cover plate, and an output end of the electric telescopic rod is fixedly connected with one end of the protective cover.

[0012] Preferably, the spring chuck assembly is combined by a limiting piece and a spring clip, the limiting piece has a T-shaped structure in the cross section, a spring is sleeved on the outer surface of the limiting piece, and one end of the limiting piece is fixedly connected with one end of the spring clip.

[0013] Preferably, the inner surface of the spring clip is provided with a reserved gap, an annular groove is formed in the inner and outer annular inner wall of the end of the spring clip close to the limiting piece, and a C-shaped spring is movably arranged on the inner side of the annular groove.

[0014] Preferably, the outer side of the end of the spring clip away from the C-shaped spring is provided with an adaptive slope surface, the outer surface of the adaptive slope surface movably abuts against the inner side surface of the inner inclined surface, and the outer surface of the adaptive slope surface movably abuts against the inner side of the push ring.

[0015] Preferably, the driving assembly comprises a driving wheel and a gear ring, the driving wheel is rotatably installed on the center inner wall of the fixed column, the outer surface of the gear ring is in meshing rotation with the outer surface of the driving wheel, the outer surface of the gear ring is rotatably connected with the inner wall of the fixed column, and the two sides of the gear ring are fixedly connected with connecting arm rods.

[0016] Preferably, the inner side surface of the fixed column is provided with a limiting rotation groove, a fixed lining plate is additionally arranged on the outer surface of the limiting rotation groove, a rotating ring is rotatably connected with the inner surface of the limiting rotation groove, the outer surface of the rotating ring is rotatably connected with the inner wall of the limiting rotation groove, an eccentric protruding column is rotatably connected with the inner wall of the side of the rotating ring away from the limiting rotation groove, the other end of the eccentric protruding column is fixedly connected with a cam plate, a connecting shaft rod is fixedly connected with the end of the cam plate away from the eccentric protruding column, the outer surface of the connecting shaft rod movably abuts against the inner side surface of the fixed lining plate, and the outer surface of the end of the cam plate away from the fixed lining plate movably abuts against the outer surface of the extending outer pipe.

[0017] Compared with the prior art, the medical hypotube laser cutting guiding feeder has the following beneficial effects:

[0018] The medical hypotube laser cutting guiding feeder disclosed by the application realizes the precision of hypotube guiding feeding through the optimized design of the material pipe guiding mechanism, forms a central high-speed airflow by arranging the air injection guiding unit, stably transports the hypotube along the central path while reducing the direct contact friction between the hypotube and the extending outer pipe, can also assist in blowing and cleaning the dust on the surface of the hypotube, and through the design of the floating guiding assembly, dynamic compensation is realized during the transportation of the hypotube to avoid distortion; through the arrangement of the tail end material clamping unit, the hypotube is flexibly clamped at the front end of the laser cutting, so that the clamping and cooperating feeding of the hypotube can be realized, the pipe resonance can be offset, the edge defect rate can be reduced, the stable progress of the hypotube laser cutting operation is further ensured, and the cutting quality and production efficiency are improved. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a perspective view of the present application;

[0020] Figure 2 is a half cutaway view of the present application;

[0021] Figure 3 is a perspective view of the present application; Figure 2 is an enlarged view of A of the present application;

[0022] Figure 4 is a perspective view of the material pipe guiding mechanism of the present application;

[0023] Figure 5 is a perspective view of the present application; Figure 4 is an enlarged view of B of the present application;

[0024] Figure 6 is a perspective view of the spring collet assembly of the present application;

[0025] Figure 7 is a perspective view of the air entraining jet guide unit of the present application;

[0026] Figure 8 is a half cutaway view of the air entraining jet guide unit of the present application;

[0027] Figure 9 is a connection cross-sectional view of the air entraining jet guide unit and the outer pipe vibration damping unit of the present application;

[0028] Figure 10 is an enlarged view of C of the present application; Figure 9

[0029] Figure 11 is an enlarged view of C1 of the present application; Figure 10

[0030] Figure 12 is an enlarged view of D of the present application; Figure 9

[0031] Figure 13 is a partial cross-sectional view of the outer pipe vibration damping unit of the present application;

[0032] Figure 14 is a connection cross-sectional view of the fixed column and the outer pipe contact assembly of the present application.

[0033] ​​​In the figure: 1, the laser cutting machine body; 2, the installation unit; 21, the guide seat; 211, the front cover plate; 212, the rear cover plate; 3, the air injection guide unit; 31, the limiting sleeve; 310, the fixed ring; 32, the extended outer tube; 321, the flow diffuser; 33, the inner sealing ring plate; 331, the air equalizing cover; 332, the turbine; 3311, the reinforcing rib; 3312, the fixed ring; 34, the floating guide assembly; 341, the curved floating plate; 342, the swing rod; 343, the elastic wire; 3421, the contact wheel; 4, the tail end clamping unit; 41, the threaded sleeve; 411, the inner inclined surface; 42, the protective cover; 421, the push ring; 43, the electric telescopic rod; 44, the spring collet assembly; 441, the limiting piece; 4411, the spring; 442, the spring clamp; 4421, the adaptive slope surface; 4420, the reserved clamping gap; 4430, the annular groove; 443, the C-shaped spring; 5, the outer tube vibration suppression unit; 510, the driving runner; 511, the tooth ring; 512, the connecting arm rod; 51, the fixed column; 50, the limiting rotary groove; 501, the fixed lining plate; 502, the rotary ring; 503, the eccentric protruding column; 504, the cam plate; 505, the connecting shaft; 52, the stepped tube. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical scheme of the present application clear, complete description, and the advantages are more clear and obvious, the following will be further described in detail with the embodiments of the present application combined with the drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present application, not all embodiments, only to explain the embodiments of the present application, and not for the purpose of limiting the embodiments of the present application, all other embodiments obtained by the person skilled in the art without doing creative work, belong to the scope of protection of the present application.

[0035] Example one, please refer to Figures 1-14This invention provides a technical solution: a guide feeder for laser cutting of medical hypotubes, comprising a laser cutting machine body 1, a tube guiding mechanism at the upper end of the laser cutting machine body 1, the tube guiding mechanism including an installation unit 2, the installation unit 2 consisting of a guide seat 21, a front cover plate 211 and a rear cover plate 212, an outer tube vibration damping unit 5 at the center of the guide seat 21, the outer tube vibration damping unit 5 including a driving component and an outer tube contact component, the outer tube contact component including a fixing post 51, and an air duct guide provided on the side of the fixing post 51 near the front cover plate 211. Unit 3, the fixed column 51 is provided with a tail end clamping unit 4 on the side near the rear cover plate 212. The air ducting and guiding unit 3 includes a limiting sleeve 31, an extension outer tube 32, an inner sealing ring plate 33 and a floating guide assembly 34. The outer surface of the limiting sleeve 31 is threadedly connected to the inner wall of the front cover plate 211. The tail end clamping unit 4 includes a threaded sleeve 41, a protective cover 42 and a spring chuck assembly 44. One end of the extension outer tube 32 is fixedly connected to the inner wall of the limiting sleeve 31, and the end of the extension outer tube 32 away from the limiting sleeve 31 passes through the center inner side of the spring chuck assembly 44.

[0036] In this embodiment, one end of the medical hypochlorous tube enters through the limiting sleeve 31, allowing the hypochlorous tube to be conveyed forward along the axial path of the extended outer tube 32. The outer tube vibration suppression unit 5 prevents the extended outer tube 32 from shaking under high-speed airflow, thus suppressing vibration and further preventing twisting or shaking of the hypochlorous tube during laser cutting, reducing the edge defect rate. The tail-end clamping unit 4, using a spring chuck assembly 44, flexibly clamps the medical hypochlorous tube at the conveying tail end, ensuring normal feeding. The optimized design of the tube guide mechanism ensures accurate guiding and feeding of the hypochlorous tube. By utilizing the air-guiding unit 3, a high-speed airflow is formed in the center, which allows the hyaluronic acid tube to be stably transported along the central path while reducing direct contact friction with the extended outer tube 32. It can also assist in blowing away dust on the surface of the hyaluronic acid tube. Furthermore, the design of the floating guide component 34 enables dynamic compensation during the transport of the hyaluronic acid tube to avoid twisting. By using the tail clamping unit 4, the hyaluronic acid tube is flexibly clamped at the laser cutting front end, which can not only achieve clamping and feeding of the hyaluronic acid tube, but also counteract tube resonance, reduce the edge defect rate, and further ensure the stable progress of the hyaluronic acid tube laser cutting operation, thereby improving cutting quality and production efficiency.

[0037] Example 2, see attached document Figures 1-14 Based on Example 1, to avoid twisting of the medical hypochlorous acid tube during feeding and to maintain the central path guiding the conveying process:

[0038] A fixing ring 310 is fixedly connected to one outer end of the limiting sleeve 31. The inner ring surface of the fixing ring 310 is fixedly connected to the outer surface of the inner sealing ring plate 33. A turbine 332 is rotatably connected to the outer ring surface of the inner sealing ring plate 33. An air guide hole is connected through the outer ring sidewall of the limiting sleeve 31. A gas equalization hood 331 is fixedly connected to the side of the inner sealing ring plate 33 near the extension outer tube 32. The gas equalization hood 331 is integrally formed with the inner sealing ring plate 33. A flow diffuser hood 321 is provided at the end of the extension outer tube 32 near the fixing ring 310. A flow cavity is formed on the inner side of the flow diffuser hood 321 and the outer side of the gas equalization hood 331. A reinforcing rib is fixedly installed on the inner surface of the gas equalization hood 331. A fixed ring 3312 is fixedly installed at one end of the air distribution hood 331 away from the inner sealing ring plate 33; the floating guide assembly 34 includes a curved float 341, a rocker arm 342 and a spring wire 343. One end of the curved float 341 is movably engaged with the outer surface of the fixed ring 3312, and the other end of the curved float 341 is rotatably connected to the outer surface of one end of the rocker arm 342. The rocker arm 342 has a "√" shaped plate structure. The inner surface of the rocker arm 342 is fixedly connected to one end of the spring wire 343, and the other end of the spring wire 343 is fixedly connected to the inner surface of the curved float 341. An abutment wheel 3421 is rotatably installed on the lower surface of the rocker arm 342.

[0039] In this embodiment, when the medical hypotube is being transported, one end of the hypotube first enters the extended outer tube 32 through the inner sealing ring plate 33. At this time, the air guide hole is connected to a high-pressure air source, and the airflow enters the cavity formed by the inner sealing ring plate 33 and the limiting sleeve 31. At this time, the turbine 332 is driven by the airflow to rotate at high speed, and the airflow is evenly dispersed. The airflow always rotates and flows at high speed along the inclined sidewall of the diffuser 321 and the equalizing hood 331 of the extended outer tube 32. The airflow will flow along the flow cavity formed by the inner side of the diffuser 321 and the outer side of the equalizing hood 331. At this time, a high-speed airflow is formed in the center, and the circumferential airflow converges to the center, so that the hypotube in the center is transported along the central path. The high-speed airflow in the center can avoid the twisting of the tube. It is worth noting that the surrounding airflow converges to the center, and the high-speed airflow in the center can reduce the direct contact friction between the tube and the guide component in terms of movement. At the same time, it can also assist in blowing away the dust on the surface of the hypotube, further improving the precision of the subsequent tube cutting.

[0040] It should also be noted that a floating guide component 34 is designed at the narrowing end of the air distribution hood 331. When the airflow in the flow cavity is affected by the high-speed airflow in the center and converges towards the center, multiple sets of curved floating plates 341 swing inward. Under the elastic action of the elastic wire 343, dynamic compensation is achieved, so that multiple sets of contact wheels 3421 provide auxiliary guidance for the pipe and avoid the pipe from twisting during transport.

[0041] Example 3, refer to Appendix Figures 1-14 Based on Example 2, in order to achieve clamping and feeding of the sodium hypochlorite tube:

[0042] One end of the threaded sleeve 41 is threadedly connected to the outer surface of the rear cover plate 212. An inner bevel 411 is provided on the inner circumferential surface of the end of the threaded sleeve 41 away from the rear cover plate 212. A spring clip 442 is slidably connected to the outer surface of the threaded sleeve 41. The outer circumferential surface of the spring clip 442 is fixedly connected to the inner circumferential surface of the protective cover 42. An electric telescopic rod 43 is provided at the end of the protective cover 42 near the rear cover plate 212. The electric telescopic rod 43 is fixedly installed on the outer side of the rear cover plate 212, and its output end is fixedly connected to one end of the protective cover 42. The spring clip assembly 44 is composed of a limiting member 441 and a spring clip 442. The cross-section of the limiting member 441 is T-shaped, and a spring 4411 is slidably sleeved on the outer surface of the limiting member 441. One end of the limiting member 441 is fixedly connected to one end of the spring clip 442; the outer surface of the threaded sleeve 41 and the outer surface of the push ring 421 are respectively provided with air bearings; the air bearings can offset the resonance of the pipe and reduce the edge defect rate; the inner surface of the spring clip 442 is provided with a reserved slot 4420, and the inner and outer rings of the end of the spring clip 442 near the limiting member 441 are provided with an annular groove 4430, and a C-type spring 443 is movably installed on the inner side of the annular groove 4430; the outer side of the end of the spring clip 442 away from the C-type spring 443 is provided with an adapting slope 4421, the outer surface of the adapting slope 4421 is movably abutting with the inner surface of the inner inclined surface 411, and the outer surface of the adapting slope 4421 is movably abutting with the inner side of the push ring 421;

[0043] In this embodiment, when the sodium hypochlorite tube is subjected to high-speed airflow and transport at the center, the output is conveyed through the output end of the extended outer tube 32. When it is necessary to clamp the sodium hypochlorite tube, refer to... Figures 4-5As shown, when the electric telescopic rod 43 retracts, its output end drives the protective cover 42 and the push ring 421 to move horizontally towards the side closer to the rear cover plate 212. The push ring 421 squeezes the inner spring clip 442. During the process of the spring clip assembly 44 being pushed inward, the adapting slope 4421 on the outer side of the spring clip 442 abuts against the inner side wall of the inner slope 411. This causes multiple sets of spring clips 442 to clamp the central hyaluronic acid tube. At the same time, the spring 4411 undergoes elastic compression. It is worth noting that the stepped tube 52 is embedded in the inner side of the fixed post 51, and its inner side is provided with two sets of stepped holes, one set being the limiting stepped hole for the spring 4411 and the other set being the limiting member 44. The stepped hole of the 1-type anti-reverse mechanism, when the limiting member 441 is pushed inward, the limiting stepped hole limits and supports the spring 4411, and the spring 4411 is compressed; when the clamping restriction on the hyaluronic acid tube is released, the electric telescopic rod 43 is extended, at which time the protective cover 42 drives the push ring 421 to move outward, and at this time the spring clamp 442 is no longer resisted by the push ring 421. The limiting member 441, under the elastic force of the spring 4411, makes the spring clamp 442 return to its initial position and contact the clamping of the hyaluronic acid tube. Through the flexible clamping design, the vibration of the tube during the cutting process is reduced, the edge burrs or breakage points are avoided, and the deformation of the hyaluronic acid tube during the clamping process is prevented, which would lead to the tilting of the cutting surface.

[0044] Example 4, see attached document Figures 1-14 Based on Example 3, in order to achieve a vibration cycle on the extended outer tube 32 and further ensure the stability of the hyaluronic acid tube during guiding feeding and laser cutting:

[0045] The drive assembly includes a drive wheel 510 and a gear ring 511. The drive wheel 510 is rotatably mounted on the inner wall of the center of the fixed column 51. The outer surface of the gear ring 511 meshes with the outer surface of the drive wheel 510 and rotates. The outer surface of the gear ring 511 is rotatably connected to the inner wall of the fixed column 51. Connecting arms 512 are fixedly connected to both sides of the gear ring 511. A limiting groove 50 is formed on the inner surface of the fixed column 51. A fixing liner 501 is fixedly added to the outer surface of the limiting groove 50. A rotating ring 502 is rotatably connected to the inner surface of the limiting groove 50. The outer surface of the rotating ring 502 is rotatably connected to the inner wall of the limiting rotating groove 50. An eccentric protrusion 503 is rotatably connected to the inner wall of the rotating ring 502 away from the limiting rotating groove 50. A cam plate 504 is fixedly connected to the other end of the eccentric protrusion 503. A connecting shaft 505 is fixedly connected to the end of the cam plate 504 away from the eccentric protrusion 503. The outer surface of the connecting shaft 505 is movably connected to the inner surface of the fixed liner 501. The outer surface of the end of the cam plate 504 away from the fixed liner 501 is movably abutting against the outer surface of the extension outer tube 32.

[0046] In this embodiment, an outer tube vibration damping unit 5 is provided on the inner side of the guide seat 21 to increase the stability of the air jet guide unit 3 during installation. When the hyaluronic acid tube is being transported, the high-speed airflow in the center transmits vibration to the extended outer tube 32. At this time, the active rotating wheel 510 is controlled to rotate, and the toothed ring 511 meshes with the outer surface of the active rotating wheel 510, thus realizing the linkage of the connecting arm 512. (Refer to...) Figure 9 and Figure 12 As shown, when the connecting arm 512 rotates in both directions, it drives the rotating ring 502 to deflect. At this time, the cam plate 504 swings under the deflection action of the eccentric protrusion 503, thus realizing the synchronous deflection of multiple sets of cam plates 504. This allows the cam plate 504 to provide auxiliary support to the surface of the extension tube 32, suppressing the vibration at both ends of the extension tube 32 and maintaining stability, thereby further achieving a stable effect when guiding and feeding the hyaluronic acid tube.

[0047] Example 5, see attached document Figures 1-14 Based on Embodiment 4, the present invention also proposes a method for using a guide feeder for laser cutting of medical hypotubes, comprising the following steps:

[0048] Step 1: First, one end of the hyaluronic acid tube enters the extended outer tube 32 through the inner sealing ring plate 33. The air guide hole is connected to a high-pressure air source. The airflow enters the cavity formed by the inner sealing ring plate 33 and the limiting sleeve 31. At this time, the turbine 332 is driven by the airflow to rotate at high speed, and the airflow is evenly dispersed. The airflow always rotates and flows at high speed along the inclined side wall of the diffuser 321 and the equalizer 331 of the extended outer tube 32. The airflow will flow along the flow cavity formed by the inner side of the diffuser 321 and the outer side of the equalizer 331. A high-speed airflow is formed in the center, and the circumferential airflow converges to the center, so that the hyaluronic acid tube in the center is transported along the central path. The high-speed airflow in the center can avoid the twisting of the tube.

[0049] Step 2: When the airflow in the flow cavity is affected by the high-speed airflow in the center and converges towards the center, multiple sets of curved floats 341 swing inward. Under the elastic action of the elastic wire 343, dynamic compensation is achieved, so that multiple sets of contact wheels 3421 provide auxiliary guidance for the pipe and avoid pipe twisting during transport.

[0050] Step 3: When the sodium hypochlorite tube is under the action of high-speed airflow and transport in the center, the sodium hypochlorite tube outputs through the output end of the extended outer tube 32. When the sodium hypochlorite tube is clamped, the electric telescopic rod 43 is controlled to retract. At this time, its output end drives the protective cover 42 and the push ring 421 to move horizontally towards the side closer to the rear cover plate 212. The push ring 421 squeezes the inner spring clip 442. During the process of the spring clip assembly 44 being pushed inward as a whole, the adapting slope 4421 on the outer side of the spring clip 442 abuts against the inner side wall of the inner slope 411. In this way, multiple sets of spring clips 442 clamp the sodium hypochlorite tube in the center.

[0051] Step 4: After the hyaluronic acid tube is clamped, the control installation unit 2 moves horizontally on the laser cutting machine body 1, and drives the clamped hyaluronic acid tube to move towards the laser cutting station to carry out the cutting operation.

[0052] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A guide feeder for laser cutting of medical hypotubes, comprising a laser cutting machine body (1), characterized in that: The upper end of the laser cutting machine body (1) is provided with a material tube guiding mechanism. The material tube guiding mechanism includes an installation unit (2). The installation unit (2) consists of a guide seat (21), a front cover plate (211), and a rear cover plate (212). An outer tube vibration damping unit (5) is provided at the center of the guide seat (21). The outer tube vibration damping unit (5) includes a driving component and an outer tube contact component. The outer tube contact component includes a fixing column (51). An air duct spraying unit (3) is provided on the side of the fixing column (51) near the front cover plate (211). The side of the fixing column (51) near the rear cover plate (212) is provided with an air duct spraying unit (3). The tail end clamping unit (4) is provided. The air jet guiding unit (3) includes a limiting sleeve (31), an extension outer tube (32), an inner sealing ring plate (33), and a floating guide assembly (34). The outer surface of the limiting sleeve (31) is threadedly connected to the inner wall of the front cover plate (211). The tail end clamping unit (4) includes a threaded sleeve (41), a protective cover (42), and a spring collet assembly (44). One end of the extension outer tube (32) is fixedly connected to the inner wall of the limiting sleeve (31). The end of the extension outer tube (32) away from the limiting sleeve (31) passes through the inner center of the spring collet assembly (44). A fixing ring (310) is fixedly connected to one end of the outer side of the limiting sleeve (31). The inner ring surface of the fixing ring (310) is fixedly connected to the outer surface of the inner sealing ring plate (33). A turbine (332) is rotatably connected to the outer ring surface of the inner sealing ring plate (33). An air guide hole is connected through the outer ring side wall of the limiting sleeve (31). A gas equalization hood (331) is fixedly connected to the side of the inner sealing ring plate (33) near the extension outer tube (32). The gas equalization hood (331) is integrally formed with the inner sealing ring plate (33). A flow diffuser (321) is provided at one end of the extension outer tube (32) near the fixing ring (310). A flow cavity is formed on the inner side of the flow diffuser (321) and the outer side of the gas equalization hood (331). A reinforcing rib (3311) is fixedly installed on the inner surface of the gas equalization hood (331). A fixing ring (3312) is fixedly installed at one end of the gas equalization hood (331) away from the inner sealing ring plate (33). The floating guide assembly (34) includes a curved float (341), a rocker arm (342), and a spring wire (343). One end of the curved float (341) is movably engaged with the outer surface of a fixed ring (3312), and the other end of the curved float (341) is rotatably connected to the outer surface of one end of the rocker arm (342). The rocker arm (342) has a "√" shaped plate structure. The inner surface of the rocker arm (342) is fixedly connected to one end of the spring wire (343), and the other end of the spring wire (343) is fixedly connected to the inner surface of the curved float (341). An abutment wheel (3421) is rotatably installed on the lower surface of the rocker arm (342).

2. The guide feeder for laser cutting of medical hypotubes according to claim 1, characterized in that: One end of the threaded sleeve (41) is threaded to the outer surface of the rear cover plate (212). The inner circumferential surface of the end of the threaded sleeve (41) away from the rear cover plate (212) is provided with an inner inclined surface (411). A spring clip (442) is slidably installed on the inner side of the threaded sleeve (41). The outer circumferential surface of the spring clip (442) is fixedly connected to the inner circumferential surface of the protective cover (42). An electric telescopic rod (43) is provided at the end of the protective cover (42) near the rear cover plate (212). The electric telescopic rod (43) is fixedly installed on the outer side of the rear cover plate (212). The output end of the electric telescopic rod (43) is fixedly connected to one end of the protective cover (42).

3. The guide feeder for laser cutting of medical hypotubes according to claim 1, characterized in that: The spring clip assembly (44) is composed of a limiting member (441) and a spring clip (442). The limiting member (441) has a "T" shaped cross section. A spring (4411) is slidably sleeved on the outer surface of the limiting member (441). One end of the limiting member (441) is fixedly connected to one end of the spring clip (442).

4. The guide feeder for laser cutting of medical hypotubes according to claim 3, characterized in that: The inner surface of the spring clip (442) is provided with a reserved slot (4420). The inner and outer rings of the spring clip (442) near the limiting member (441) are provided with an annular groove (4430). A C-type spring (443) is movably installed on the inner side of the annular groove (4430).

5. A guide feeder for laser cutting of medical hypotubes according to claim 4, characterized in that: The outer side of the end of the spring clip (442) away from the C-shaped spring (443) is provided with an adapting slope (4421). The outer surface of the adapting slope (4421) is in movable contact with the inner surface of the inner inclined surface (411), and the outer surface of the adapting slope (4421) is in movable contact with the inner side of the push ring (421).

6. The guide feeder for laser cutting of medical hypotubes according to claim 1, characterized in that: The drive assembly includes a drive wheel (510) and a toothed ring (511). The drive wheel (510) is rotatably mounted on the inner wall of the center of the fixed column (51). The outer surface of the toothed ring (511) meshes with the outer surface of the drive wheel (510) and rotates. The outer surface of the toothed ring (511) is rotatably connected to the inner wall of the fixed column (51). Connecting arms (512) are fixedly connected to both sides of the toothed ring (511).

7. A guide feeder for laser cutting of medical hypotubes according to claim 6, characterized in that: The inner surface of the fixed column (51) is provided with a limiting groove (50), and a fixed liner (501) is fixedly added to the outer surface of the limiting groove (50). A rotating ring (502) is rotatably connected to the inner surface of the limiting groove (50). The outer surface of the rotating ring (502) is rotatably connected to the inner wall of the limiting groove (50). An eccentric protrusion (503) is rotatably connected to the inner wall of the rotating ring (502) away from the limiting groove (50). A cam plate (504) is fixedly connected to the other end of the eccentric protrusion (503). A connecting shaft (505) is fixedly connected to the end of the cam plate (504) away from the eccentric protrusion (503). The outer surface of the connecting shaft (505) is movably connected to the inner surface of the fixed liner (501). The outer surface of the end of the cam plate (504) away from the fixed liner (501) is movably abutting against the outer surface of the extension tube (32).

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