Guide feeder for medical hypotube laser cutting

Abstract

The invention relates to the technical field of laser cutting machining, in particular to a guiding feeder for medical hypotube laser cutting, which comprises a laser cutting machine body, and a material tube guiding mechanism is arranged at the upper end of the laser cutting machine body. Through the arrangement of the air entraining and spraying guide unit, central high-speed airflow is formed, the hypotube is stably conveyed along a central path, meanwhile, direct contact friction between the hypotube and the extending outer tube is reduced, and dust on the surface of the hypotube can be blown in an auxiliary mode; dynamic compensation is carried out when the hypotube is conveyed, and distortion is avoided; through the arrangement of the tail end clamping unit, the hypotube is flexibly clamped at the laser cutting front end, clamping and matched feeding of the hypotube can be achieved, tube resonance can be offset, the edge defect rate is reduced, the stable progress of hypotube laser cutting operation is further guaranteed, and the cutting quality and the 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, which 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, but in actual use process, the thin tube is easy to resonate and cause edge wavy defects during high-speed cutting, which increases the post-processing cost, and the conveying distance of the traditional thin tube is long, which 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 easy to resonate and cause edge wavy defects during high-speed cutting of the pipe, which increases the post-processing cost, and the conveying distance of the traditional thin tube is long, which 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, the outer surface of the limiting piece is sleeved with a spring, 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, the inner and outer annular inner walls of one end of the spring clip close to the limiting piece are provided with an annular groove, and the inner side of the annular groove is movably provided with a C-shaped spring.

[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, the outer surface of the limiting rotation groove is fixedly provided with a fixed lining plate, the inner surface of the limiting rotation groove is rotatably connected with a rotating ring, the outer surface of the rotating ring is rotatably connected with the inner wall of the limiting rotation groove, the inner wall of one side of the rotating ring away from the limiting rotation groove is rotatably connected with an eccentric protruding column, the other end of the eccentric protruding column is fixedly connected with a cam plate, one end of the cam plate away from the eccentric protruding column is fixedly connected with a connecting shaft rod, the outer surface of the connecting shaft rod is movably connected with the inner side surface of the fixed lining plate, and the outer surface of one 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 present application has the following advantages: The medical hypotube laser cutting guiding feeder provided by the present application realizes the precision of hypotube guiding and feeding through the optimization design of the tube guiding mechanism, forms a central high-speed airflow by the setting of the air injection guiding unit, reduces the direct contact friction between the hypotube and the extending outer pipe while stably conveying the hypotube along the central path, can also assist in blowing the dust on the surface of the hypotube, and through the design of the floating guiding assembly, dynamic compensation is realized during the conveying of the hypotube to avoid distortion; through the setting of the tail end clamping unit, the hypotube is flexibly clamped at the front end of the laser cutting, which can realize the clamping and matching feeding of the hypotube, can offset the pipe resonance, can reduce the edge defect rate, can further guarantee the stable progress of the hypotube laser cutting operation, and can improve the cutting quality and production efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1A schematic view of a perspective structure of the present application; Figure 2 A schematic view of a half-section structure of the present application; Figure 3 A schematic view of a perspective structure of the present application; Figure 2 A schematic view of an enlarged structure at A of the present application; Figure 4 A schematic view of a perspective cross-section structure of a material pipe guiding mechanism of the present application; Figure 5 A schematic view of a perspective structure of the present application; Figure 4 A schematic view of an enlarged structure at B of the present application; Figure 6 A schematic view of a perspective structure of a spring collet assembly of the present application; Figure 7 A schematic view of a perspective structure of an air entraining jet guiding unit of the present application; Figure 8 A schematic view of a half-section structure of the air entraining jet guiding unit of the present application; Figure 9 A schematic view of a connecting cross-section structure of the air entraining jet guiding unit and an outer pipe vibration suppressing unit of the present application; Figure 10 A schematic view of a perspective structure of the present application; Figure 9 A schematic view of an enlarged structure at C of the present application; Figure 11 A schematic view of a perspective structure of the present application; Figure 10 A schematic view of an enlarged structure at C1 of the present application; Figure 12 A schematic view of a perspective structure of the present application; Figure 9 A schematic view of an enlarged structure at D of the present application; Figure 13 A schematic view of a partial cross-section structure of an outer pipe vibration suppressing unit of the present application; Figure 14 A schematic view of a connecting cross-section structure of a fixing column and an outer pipe abutting assembly of the present application.

[0019] 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

[0020] 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.

[0021] Example one, please refer to Figures 1-14The application provides a technical scheme: a guiding feeder for laser cutting of a medical hypotube, which comprises a laser cutting machine body 1, and a tube guiding mechanism is arranged at the upper end of the laser cutting machine body 1; the tube guiding mechanism comprises a mounting unit 2 which is composed of a guiding seat 21, a front cover plate 211 and a rear cover plate 212; a center of the guiding seat 21 is provided with an outer tube vibration suppression unit 5; the outer tube vibration suppression unit 5 comprises a driving assembly and an outer tube abutting assembly; the outer tube abutting assembly comprises a fixed column 51; a gas guide unit 3 is arranged on one side of the fixed column 51 close to the front cover plate 211; a tail end clamping unit 4 is arranged on one side of the fixed column 51 close to the rear cover plate 212; the gas guide unit 3 comprises a limiting sleeve 31, an extended outer tube 32, an inner sealing ring plate 33 and a floating guiding assembly 34; the outer surface of the limiting sleeve 31 is threadedly connected with the inner wall of the front cover plate 211; the tail end clamping unit 4 comprises a threaded sleeve 41, a protective cover 42 and a spring collet assembly 44; one end of the extended outer tube 32 is fixedly connected with the inner wall of the limiting sleeve 31; the other end of the extended outer tube 32 away from the limiting sleeve 31 penetrates through the center of the inner side of the spring collet assembly 44. In the embodiment, one end of the medical hypotube is transported into the front end by the limiting sleeve 31, so that the hypotube is transported along the axial path of the extended outer tube 32; the setting of the outer tube vibration suppression unit 5 avoids the shaking of the extended outer tube 32 under the action of high-speed airflow, realizes the vibration suppression of the extended outer tube 32, further avoids the twisting or shaking of the hypotube during the laser cutting operation, reduces the edge defect rate, the setting of the tail end clamping unit 4 realizes the flexible clamping of the medical hypotube at the tail end by the spring collet assembly 44, and ensures the normal feeding of the hypotube; the optimization design of the tube guiding mechanism realizes the accuracy of the guiding feeding of the hypotube, the setting of the gas guide unit 3 forms a central high-speed airflow, so that the hypotube is stably transported along the central path while reducing the direct contact friction between the hypotube and the extended outer tube 32, and the dust on the surface of the hypotube can be additionally blown off, and the design of the floating guiding assembly 34 realizes the dynamic compensation of the hypotube during the transportation to avoid the twisting; the setting of the tail end clamping unit 4 realizes the flexible clamping of the hypotube before the laser cutting front end, which can realize the clamping and matching feeding of the hypotube, can offset the pipe resonance, reduce the edge defect rate, further guarantee the stable process of the hypotube laser cutting operation, and improve the cutting quality and production efficiency.

[0022] In the embodiment, one end of the medical hypotube is transported into the front end by the limiting sleeve 31, so that the hypotube is transported along the axial path of the extended outer tube 32; the setting of the outer tube vibration suppression unit 5 avoids the shaking of the extended outer tube 32 under the action of high-speed airflow, realizes the vibration suppression of the extended outer tube 32, further avoids the twisting or shaking of the hypotube during the laser cutting operation, reduces the edge defect rate, the setting of the tail end clamping unit 4 realizes the flexible clamping of the medical hypotube at the tail end by the spring collet assembly 44, and ensures the normal feeding of the hypotube; the optimization design of the tube guiding mechanism realizes the accuracy of the guiding feeding of the hypotube, the setting of the gas guide unit 3 forms a central high-speed airflow, so that the hypotube is stably transported along the central path while reducing the direct contact friction between the hypotube and the extended outer tube 32, and the dust on the surface of the hypotube can be additionally blown off, and the design of the floating guiding assembly 34 realizes the dynamic compensation of the hypotube during the transportation to avoid the twisting; the setting of the tail end clamping unit 4 realizes the flexible clamping of the hypotube before the laser cutting front end, which can realize the clamping and matching feeding of the hypotube, can offset the pipe resonance, reduce the edge defect rate, further guarantee the stable process of the hypotube laser cutting operation, and improve the cutting quality and production efficiency. Figures 1-14 In the embodiment, one end of the medical hypotube is transported into the front end by the limiting sleeve 31, so that the hypotube is transported along the axial path of the extended outer tube 32; the setting of the outer tube vibration suppression unit 5 avoids the shaking of the extended outer tube 32 under the action of high-speed airflow, realizes the vibration suppression of the extended outer tube 32, further avoids the twisting or shaking of the hypotube during the laser cutting operation, reduces the edge defect rate, the setting of the tail end clamping unit 4 realizes the flexible clamping of the medical hypotube at the tail end by the spring collet assembly 44, and ensures the normal feeding of the hypotube; the optimization design of the tube guiding mechanism realizes the accuracy of the guiding feeding of the hypotube, the setting of the gas guide unit 3 forms a central high-speed airflow, so that the hypotube is stably transported along the central path while reducing the direct contact friction between the hypotube and the extended outer tube 32, and the dust on the surface of the hypotube can be additionally blown off, and the design of the floating guiding assembly 34 realizes the dynamic compensation of the hypotube during the transportation to avoid the twisting; the setting of the tail end clamping unit 4 realizes the flexible clamping of the hypotube before the laser cutting front end, which can realize the clamping and matching feeding of the hypotube, can offset the pipe resonance, reduce the edge defect rate, further guarantee the stable process of the hypotube laser cutting operation, and improve the cutting quality and production efficiency. The outer side of the limiting sleeve 31 is fixedly connected with a fixed ring 310, the inner ring surface of the fixed ring 310 is fixedly connected with the outer surface of the inner sealing ring plate 33, the outer ring surface of the inner sealing ring plate 33 is rotatably connected with a turbine 332, and the outer ring side wall of the limiting sleeve 31 is throughly connected with a gas guide hole; the side of the inner sealing ring plate 33 close to the extension outer tube 32 is fixedly connected with a gas equalizing cover 331, the gas equalizing cover 331 is integrally formed with the inner sealing ring plate 33, one end of the extension outer tube 32 close to the fixed ring 310 is provided with a flow expansion cover 321, the inner side of the flow expansion cover 321 and the outer side of the gas equalizing cover 331 form a flow cavity, the inner side surface of the gas equalizing cover 331 is fixedly installed with a reinforcing rib 3311, and one end of the gas equalizing cover 331 away from the inner sealing ring plate 33 is fixedly installed with a fixed ring 3312; the floating guide assembly 34 comprises a curved floating plate 341, a swing rod 342 and an elastic wire 343, one end of the curved floating plate 341 is movably connected with the outer surface of the fixed ring 3312, the other end of the curved floating plate 341 is rotatably connected with the outer surface of one end of the swing rod 342, the swing rod 342 is in the shape of a “√”-shaped plate, the inner side surface of the swing rod 342 is fixedly connected with one end of the elastic wire 343, the other end of the elastic wire 343 is fixedly connected with the inner side surface of the curved floating plate 341, and the lower side surface of the swing rod 342 is rotatably installed with a contact wheel 3421. In the embodiment, when the medical hypodermic tube is conveyed, one end of the hypodermic tube first enters the extension outer tube 32 through the inner sealing ring plate 33, at this time, the gas guide hole is connected with a high-pressure gas source, the gas flow 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 gas flow to rotate at high speed, and the gas flow is uniformly dispersed, the gas flow always rotates at high speed along the flow expansion cover 321 of the extension outer tube 32 and the inclined side wall of the gas equalizing cover 331, and the gas flow flows along the flow cavity formed by the inner side of the flow expansion cover 321 and the outer side of the gas equalizing cover 331, at this time, a high-speed gas flow is formed in the center, and the circumferential gas flow converges to the center, so that the hypodermic tube in the center is conveyed along the center path, and the high-speed gas flow in the center can avoid the distortion of the pipe material; and it is worth noting that the circumferential gas flow converges to the center, the high-speed gas flow in the center can reduce the direct contact and friction between the pipe material and the guide part in the moving degree, and can also assist in blowing the dust on the surface of the hypodermic tube, further improving the precision when the pipe material is cut subsequently. It also needs to be explained that the floating guide assembly 34 is designed at the narrowed end of the gas equalizing cover 331, when the gas flow of the flow cavity converges to the center under the influence of the high-speed gas flow in the center, at this time, a plurality of curved floating plates 341 swing inward, and under the elastic action of the elastic wire 343, dynamic compensation is realized, so that a plurality of contact wheels 3421 assist in guiding the pipe material, avoiding the distortion of the pipe material during conveying.

[0023] In the embodiment, when the medical hypodermic tube is conveyed, one end of the hypodermic tube first enters the extension outer tube 32 through the inner sealing ring plate 33, at this time, the gas guide hole is connected with a high-pressure gas source, the gas flow 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 gas flow to rotate at high speed, and the gas flow is uniformly dispersed, the gas flow always rotates at high speed along the flow expansion cover 321 of the extension outer tube 32 and the inclined side wall of the gas equalizing cover 331, and the gas flow flows along the flow cavity formed by the inner side of the flow expansion cover 321 and the outer side of the gas equalizing cover 331, at this time, a high-speed gas flow is formed in the center, and the circumferential gas flow converges to the center, so that the hypodermic tube in the center is conveyed along the center path, and the high-speed gas flow in the center can avoid the distortion of the pipe material; and it is worth noting that the circumferential gas flow converges to the center, the high-speed gas flow in the center can reduce the direct contact and friction between the pipe material and the guide part in the moving degree, and can also assist in blowing the dust on the surface of the hypodermic tube, further improving the precision when the pipe material is cut subsequently. Figures 1-14 On the basis of the embodiment two, in order to realize the clamping and feeding of the hypodermic tube: One end of the threaded sleeve 41 is threadedly connected with the outer surface of the rear cover plate 212, the inner side surface of the end of the threaded sleeve 41 away from the rear cover plate 212 is provided with an inner inclined surface 411, the outer surface of the threaded sleeve 41 is slidingly connected with a spring clamp 442, the outer annular surface of the spring clamp 442 is fixedly connected with the inner side annular surface of the protective cover 42, the end of the protective cover 42 close to the rear cover plate 212 is provided with an electric telescopic rod 43, the electric telescopic rod 43 is fixedly installed on the outer side surface of the rear cover plate 212, the output end of the electric telescopic rod 43 is fixedly connected with one end of the protective cover 42; the spring clamp head assembly 44 is composed of a limiting piece 441 and the spring clamp 442, the cross section of the limiting piece 441 is in a T-shaped structure, the outer surface of the limiting piece 441 is slidingly sleeved with a spring 4411, one end of the limiting piece 441 is fixedly connected with one end of the spring clamp 442; the outer surface of the threaded sleeve 41 and the outer surface of the push ring 421 are respectively provided with air floating bearings; through the arrangement of the air floating bearings, the pipe resonance can be offset, and the edge defect rate can be reduced; the inner surface of the spring clamp 442 is provided with a reserved gap 4420, the inner and outer annular inner walls of the end of the spring clamp 442 close to the limiting piece 441 are provided with an annular groove 4430, the inner side of the annular groove 4430 is movably installed with a C-shaped spring 443; the outer side surface of the end of the spring clamp 442 away from the C-shaped spring 443 is provided with an adaptive slope surface 4421, the outer surface of the adaptive slope surface 4421 movably abuts against the inner side surface of the inner inclined surface 411, and the outer surface of the adaptive slope surface 4421 movably abuts against the inner side of the push ring 421; In the embodiment, when the hypotube is under the center high-speed airflow and the conveying effect, the hypotube is output through the output end of the extension outer tube 32, when it is needed to clamp the hypotube, referring to Figures 4-5As shown, the control electric telescopic rod 43 is retracted, at this time its output end drives the protective cover 42 and the push ring 421 to move horizontally towards the rear cover plate 212 side, the push ring 421 extrudes the spring clamp 442 on the inner side, and the spring clamp head assembly 44 is pushed to the inner side as a whole, the adaptive slope surface 4421 on the outer side of the spring clamp 442 is in contact with the inner side wall of the inner inclined surface 411, so that the plurality of spring clamps 442 clamp the center hypotube, at the same time, the spring 4411 is elastically compressed, it is worth noting that the stepped tube 52 is embedded in the inner side of the fixed column 51, and the inner side is provided with two groups of stepped holes, one group is the limiting stepped hole of the spring 4411, and the other group is the retreat limiting stepped hole of the limiting piece 441, when the limiting piece 441 is pushed inward, the limiting stepped hole limits the spring 4411, and the spring 4411 is compressed; when the clamping of the hypotube is released, the control electric telescopic rod 43 is elongated, at this time the protective cover 42 drives the push ring 421 to move outward, and at this time the spring clamp 442 is no longer in contact with the push ring 421, the limiting piece 441 is in contact with the spring 4411, so that the spring clamp 442 returns to the initial position, and the hypotube is clamped, through the design of flexible clamping, the pipe vibration in the cutting process is reduced, the edge burr or breakpoint is avoided, and the hypotube is prevented from deforming in the clamping process, so that the cutting section is inclined.

[0024] Embodiment four, referring to the accompanying drawings Figures 1-14 On the basis of embodiment three, in order to realize the vibration of the extension outer tube 32, further ensure the stability of the hypotube guiding and feeding and laser cutting: The driving assembly comprises a driving wheel 510 and a gear ring 511, the driving wheel 510 is rotatably installed in the center inner wall of the fixed column 51, the outer surface of the gear ring 511 is in meshing rotation with the outer surface of the driving wheel 510, the outer surface of the gear ring 511 is rotatably connected with the inner wall of the fixed column 51, and the two sides of the gear ring 511 are fixedly connected with connecting arm rods 512; the inner surface of the fixed column 51 is provided with a limiting rotation groove 50, the outer surface of the limiting rotation groove 50 is fixedly provided with a fixed lining plate 501, the inner surface of the limiting rotation groove 50 is rotatably connected with a rotating ring 502, the outer surface of the rotating ring 502 is rotatably connected with the inner wall of the limiting rotation groove 50, the inner wall of the side of the rotating ring 502 away from the limiting rotation groove 50 is rotatably connected with an eccentric protruding column 503, the other end of the eccentric protruding column 503 is fixedly connected with a cam plate 504, one end of the cam plate 504 away from the eccentric protruding column 503 is fixedly connected with a connecting shaft 505, the outer surface of the connecting shaft 505 is movably connected with the inner side surface of the fixed lining plate 501, and the outer surface of the one end of the cam plate 504 away from the fixed lining plate 501 is movably abutted with the outer surface of the extension outer tube 32; 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.

[0025] 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: 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. 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. 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. Step four, when the hypotube is clamped, control the whole installation unit 2 to move horizontally on the laser cutting machine body 1, and drive the clamped hypotube to move to the laser cutting station to implement cutting operation.

[0026] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and spirit of the application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the application as defined by the appended claims and their equivalents.

Claims

1. A guiding feeder for laser cutting of medical hypotube, 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 pipe guide mechanism, the material pipe guide mechanism comprises a mounting unit (2), the mounting unit (2) is composed of a guide seat (21), a front cover plate (211) and a rear cover plate (212), the center of the guide seat (21) is provided with an outer pipe vibration suppression unit (5), the outer pipe vibration suppression unit (5) comprises a driving assembly and an outer pipe abutting assembly, the outer pipe abutting assembly comprises a fixed column (51), one side of the fixed column (51) close to the front cover plate (211) is provided with an air guide unit (3), one side of the fixed column (51) close to the rear cover plate (212) is provided with a tail end clamping unit (4), the air guide unit (3) comprises a limiting sleeve (31), an extended outer pipe (32), an inner sealing ring plate (33) and a floating guide assembly (34), the outer surface of the limiting sleeve (31) is threadedly connected with the inner wall of the front cover plate (211), the tail end clamping unit (4) comprises a threaded sleeve (41), a protective cover (42) and a spring collet assembly (44), one end of the extended outer pipe (32) is fixedly connected with the inner wall of the limiting sleeve (31), the end of the extended outer pipe (32) away from the limiting sleeve (31) penetrates through the center of the inner side of the spring collet assembly (44).

2. The guiding feeder for laser cutting of medical hypotube according to claim 1, characterized in that: One end of the limiting sleeve (31) is fixedly connected with a fixed ring (310), the inner ring surface of the fixed ring (310) is fixedly connected with the outer surface of the inner sealing ring plate (33), the outer ring surface of the inner sealing ring plate (33) is rotatably connected with a turbine (332), and the outer ring side wall of the limiting sleeve (31) is throughly connected with a gas guide hole.

3. The guiding feeder for laser cutting of medical hypotube according to claim 2, characterized in that: One side of the inner sealing ring plate (33) close to the extended outer pipe (32) is fixedly connected with a gas equalizing cover (331), the gas equalizing cover (331) is integrally formed with the inner sealing ring plate (33), one end of the extended outer pipe (32) close to the fixed ring (310) is provided with a flow expansion cover (321), the inner side of the flow expansion cover (321) and the outer side of the gas equalizing cover (331) form a flow cavity, the inner side surface of the gas equalizing cover (331) is fixedly installed with a reinforcing rib (3311), and one end of the gas equalizing cover (331) away from the inner sealing ring plate (33) is fixedly installed with a fixed circular ring (3312).

4. The guiding feeder for laser cutting of medical hypotube according to claim 3, characterized in that: The floating guide assembly (34) comprises a curved floating plate (341), a swing rod (342) and a elastic wire (343), one end of the curved floating plate (341) is movably clamped with the outer surface of the fixed circular ring (3312), the other end of the curved floating plate (341) is rotatably connected with the outer surface of one end of the swing rod (342), the swing rod (342) is in a "√" shaped plate structure, the inner side surface of the swing rod (342) is fixedly connected with one end of the elastic wire (343), the other end of the elastic wire (343) is fixedly connected with the inner side surface of the curved floating plate (341), and the lower side surface of the swing rod (342) is rotatably installed with an abutting wheel (3421).

5. The guiding feeder for laser cutting of medical hypotube according to claim 1, wherein: One end of the threaded sleeve (41) is threadedly connected with the outer surface of the rear cover plate (212), the inner side surface of the end of the threaded sleeve (41) away from the rear cover plate (212) is provided with an inner inclined surface (411), the outer surface of the threaded sleeve (41) is slidably connected with a spring clamp (442), the outer ring surface of the spring clamp (442) is fixedly connected with the inner side surface of a protective cover (42), the end of the protective cover (42) close to the rear cover plate (212) is provided with an electric telescopic rod (43), the electric telescopic rod (43) is fixedly installed on the outer side surface of the rear cover plate (212), and the output end of the electric telescopic rod (43) is fixedly connected with one end of the protective cover (42).

6. The guiding feeder for laser cutting of medical hypotube according to claim 1, characterized in that: The spring clamp head assembly (44) is combined by a limiting piece (441) and a spring clamp (442), the cross section of the limiting piece (441) is in a "T" shape structure, the outer surface of the limiting piece (441) is slidably sleeved with a spring (4411), and one end of the limiting piece (441) is fixedly connected with one end of the spring clamp (442).

7. The guiding feeder for laser cutting of medical hypotube according to claim 6, characterized in that: The inner surface of the spring clamp (442) is provided with a reserved gap (4420), the inner and outer ring inner walls of the end of the spring clamp (442) close to the limiting piece (441) are provided with an annular groove (4430), and the inner side of the annular groove (4430) movably installs a C-shaped spring (443).

8. The guiding feeder for laser cutting of medical hypotube according to claim 7, characterized in that: The outer side surface of the end of the spring clamp (442) away from the C-shaped spring (443) is provided with an adaptive slope surface (4421), the outer surface of the adaptive slope surface (4421) movably abuts against the inner side surface of the inner inclined surface (411), and the outer surface of the adaptive slope surface (4421) movably abuts against the inner side of the push ring (421).

9. The guiding feeder for laser cutting of medical hypotube according to claim 1, characterized in that: The driving assembly comprises a driving rotary wheel (510) and a gear ring (511), the driving rotary wheel (510) is rotatably installed on the center inner wall of the fixed column (51), the outer surface of the gear ring (511) is in meshing rotation with the outer surface of the driving rotary wheel (510), the outer surface of the gear ring (511) is rotatably connected with the inner wall of the fixed column (51), and the two sides of the gear ring (511) are fixedly connected with connecting arm rods (512).

10. The guiding feeder for laser cutting of medical hypotube according to claim 9, characterized in that: The inner side surface of the fixed column (51) is provided with a limiting rotary groove (50), the outer surface of the limiting rotary groove (50) is fixedly provided with a fixed lining plate (501), the inner surface of the limiting rotary groove (50) is rotatably connected with a rotary ring (502), the outer surface of the rotary ring (502) is rotatably connected with the inner wall of the limiting rotary groove (50), the inner wall of the side of the rotary ring (502) away from the limiting rotary groove (50) is rotatably connected with an eccentric protruding column (503), the other end of the eccentric protruding column (503) is fixedly connected with a cam plate (504), one end of the cam plate (504) away from the eccentric protruding column (503) is fixedly connected with a connecting shaft rod (505), the outer surface of the connecting shaft rod (505) is movably connected with the inner side surface of the fixed lining plate (501), and the outer surface of the end of the cam plate (504) away from the fixed lining plate (501) movably abuts against the outer surface of the extension outer pipe (32).

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