Core pulling machine for medical braided tube production

Abstract

The invention relates to the technical field of medical braided tube production, in particular to a core pulling machine for medical braided tube production, which comprises an operation table and a moving mechanism, the moving mechanism is mounted on the right side of the table top of the operation table, the moving mechanism comprises guide rails, a pushing assembly and a transverse rack plate, the bottom end of the pushing assembly is connected with the two guide rails, and the transverse rack plate is connected with the two guide rails. The two sets of guide rails are fixedly arranged on the right side of the table top of the operation table, a transverse rack plate is installed at the left end of the pushing assembly, the pushing assembly comprises a material storage box and sliding blocks, and the two sets of sliding blocks are installed at the bottom end of the material storage box; when the pushing assembly moves leftwards, the ratchet wheel cannot be rotated, so that core pulling can be conveniently conducted on the braided tube body in the clamping arm on the right side, semi-automatic operation can be conducted only by manually filling the braided tube body, the efficiency is further improved, and resource consumption is reduced; the two groups of clamping blocks which are embedded in a staggered manner are gradually staggered inwards in the driving box of the clamping assembly, so that deformation is avoided during core pulling, and the quality of a braided tube main body after core pulling is improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical braided tube production, in particular to a core-pulling machine used for producing medical braided tubes. Background Art

[0002] Medical braided tubes are widely used in the medical field, such as various catheters, drainage tubes, etc. It is usually composed of an inner layer, a braided layer and an outer layer. The presence of the braided layer can enhance the strength, flexibility and anti-twisting performance of the pipeline, so that it can better adapt to various needs in medical operations, while ensuring the safety and reliability of the pipeline in the body. The materials of medical braided tubes are diverse, and during the braiding process, the braided layer and the core shaft may have a certain adhesion. When facing some braided tubes with high viscosity or complex materials, some existing core pulling equipment has a large resistance during the core pulling process, which is easy to cause the core shaft to break or the pipeline to deform, affecting the product quality ratio. With the widespread application of medical braided tubes, the demand for medical braided tubes is increasing, but the existing core pulling machines are mostly operated in a single group, and the core pulling efficiency is low. At the same time, the medical braided tube needs to be manually positioned during core pulling, which is not only time-consuming, but also has a certain deviation in manual operation, resulting in deformation of the braided tube during core pulling, affecting the final quality. Summary of the invention

[0003] The purpose of the present invention is to provide a core pulling machine for the production of medical braided tubes, so as to solve the problem proposed in the above background technology that the existing core pulling machines are mostly operated in a single group, the core pulling efficiency is low, and the medical braided tubes need to be manually positioned during core pulling, which is not only time-consuming but also has certain deviations in manual operation, resulting in deformation of the braided tube during core pulling, affecting the final quality.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical scheme: a core pulling machine for the production of medical braided tubes, comprising an operating table and a moving mechanism, wherein a moving mechanism is installed on the right side of the table top of the operating table, and the moving mechanism comprises a guide rail, a pushing assembly and a transverse rack plate, the bottom end of the pushing assembly is connected to two guide rails, and the two groups of guide rails are fixedly arranged on the right side of the table top of the operating table, and a transverse rack plate is installed on the left end of the pushing assembly, and the pushing assembly comprises a material storage box and a slider, two groups of sliders are installed on the bottom end of the material storage box, and the slider is sleeved in the guide rail, and the right end of the material storage box is provided with a hydraulic oil pump for pushing, and a transverse rack plate is fixedly arranged on the left end of the material storage box, and a core pulling mechanism is installed on the left end of the moving mechanism, and the core pulling mechanism comprises a C-shaped frame, a lifting assembly and a conveying pipe, the C-shaped frame is fixedly arranged on the left wall of the material storage box, the lifting assembly is installed on the inner bottom side of the C-shaped frame, and the conveying pipe is installed on the inner top end of the C-shaped frame, and the conveying pipe is perpendicular to the lifting assembly on the bottom side, The gear train is a gear that is coupled to the gear train, and the gear train is coupled to the gear train, and the gear train is coupled to the gear train, and the gear train is coupled to the gear train.

[0005] Preferably, a built-in groove is downwardly opened at the top of the material storage box, and a discharge port is opened at the right end of the built-in groove.

[0006] Preferably, the lifting assembly includes a hollow cylinder and a sliding column, the bottom end of the hollow cylinder is fixed to the inner bottom end of the C-shaped frame, the sliding column is sleeved inside the hollow cylinder, a circular notch is opened on the right side of the bottom end of the hollow cylinder, a vertical tooth plate is installed inside the right end of the sliding column, and a triangular block is fixed on the top of the sliding column.

[0007] Preferably, the right end of the vertical tooth plate engages with the first gear, the first gear is fixed at the center of the rotating rod, the rear side of the rotating rod is inserted into the internal rear side plate of the C-shaped frame, and the front end of the rotating rod is provided with a chain group connected to the servo motor, and the servo motor is installed at the internal bottom end of the C-shaped frame.

[0008] Preferably, the conveying pipe includes a long square tube and a drop tube, the long square tube is inserted in the center of the top of the C-shaped frame, U-shaped blocks are fixed on both walls of the inner bottom end of the long square tube, fixed columns are fixed in the centers of two groups of the U-shaped blocks, the centers of the two groups of the fixed columns are both sleeved inside the bottom end of the rotating plate, a discharge slot is opened on the right side of the top of the long square tube, and the right outer wall of the discharge slot is connected to the inner wall of the left end of the drop tube.

[0009] Preferably, a limiting block is fixedly provided at the inner top end of the long square tube, and a curved groove is opened on the right side of the limiting block.

[0010] Preferably, a fixed bearing is installed at the inner center of the fixed box, the bottom end of the rotating shaft is inserted into the inner part of the fixed bearing, and through openings are opened on the two rear walls of the fixed box.

[0011] Preferably, the inner ring side of the outer gear is surrounded by a limiting groove, a clamping block is provided in a single group of the limiting grooves, and a torsion spring is inserted in each of the clamping blocks.

[0012] Preferably, the clamping assembly includes a second drive box and a threaded rod, the top of the second drive box is connected to a controller, the inner side of the second drive box is connected to a threaded rod, the threaded rod is inserted through the inner rear wall of the limit box, two groups of opposite long barrel nuts are sleeved on the center of the threaded rod, the front ends of the two groups of long barrel nuts are fixed with connecting frames, and the front ends of the connecting frames are fixed with moving wheels.

[0013] Preferably, the clamp includes a fixed block and a clamping block, a fixed block is fixedly provided at the inner center of the two groups of connecting frames, a clamping block is fixedly provided on the inner side of the two groups of fixed blocks, a semicircular groove is provided at the front end of the two groups of clamping blocks, a claw-shaped groove is provided on the side of the two groups of clamping blocks, and the two groups of clamping blocks can be staggered and interlocked relative to each other.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] 1. By setting four groups of clamping arms with the same structure, the main body of the braided tube that needs to be pulled out can be clamped and limited, and the filling and pulling out can be carried out continuously to further improve the production efficiency. The clamping assembly provided inside the limit box can move the two groups of clamps relatively to clamp the main body of the braided tube. Through this design, the main body of the braided tube of different sizes can be clamped, which is convenient and fast to improve the applicability of the device. Through the two groups of staggered clamping blocks, they are gradually staggered inwards in the driving box of the clamping assembly. Through this design, the main body of the braided tube can be clamped, which is convenient for core pulling without deformation, and the quality of the main body of the braided tube after core pulling is improved;

[0016] 2. The material storage box and the core pulling mechanism can be pushed to the core pulling position by setting a hydraulic oil pump. This design allows the core pulling mechanism to move within a specified moving distance without the need for multiple positioning, making it convenient to pull the core of the braided tube body. This reduces manual contact with the core pulling position to avoid accidental injuries caused by accidental contact, thus reducing potential safety hazards. The built-in slot inside the material storage box allows the core columns to be easily collected without manual extraction, thus reducing the labor burden of the workers.

[0017] 3. The main body of the braided tube can be vertically pulled out through the lifting assembly and the conveying tube vertically arranged at the upper and lower ends of the C-shaped frame, which is convenient and fast to improve efficiency. The servo motor drives the first gear meshing sliding column to rise under the drive of the chain group, so that the triangular block at the top pushes the core column inside the main body of the braided tube into the conveying tube. The deformation of the main body of the braided tube can be further reduced by vertical pushing. The rotating plate that can only rotate upward is arranged on the bottom side of the conveying tube to limit the core column to prevent it from falling. The curved groove opened by the limit block fixed at the top of the conveying tube can push the next core column through the discharge slot opened on the right side and send it into the storage box. This design can facilitate the storage of core columns without manual picking, reduce the number of personnel and reduce production costs;

[0018] 4. While the above-mentioned structure is designed, when the material storage box is pushed to move by the moving mechanism, the fixed transverse rack plate can pass through the interior of the fixed box and then engage the ratchet gear to facilitate the rotation of the rotating shaft. Through the structure inside the ratchet gear, only when the pushing mechanism pushes back, the meshing rotation drives the rotating shaft to rotate ninety degrees clockwise to rotate the next set of clamping arms to the current position, which is convenient for continuing to load the braided tube body and improve production efficiency. When the pushing component moves to the left, the ratchet gear will not be rotated, thereby facilitating the core pulling of the braided tube body inside the clamping arm on the right. Through this design, only manual loading of the braided tube body is required to perform semi-automatic operation, which further improves efficiency and saves resource consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic front view of the structure of the present invention;

[0021] Figure 2 It is a schematic diagram of the main structure of the present invention;

[0022] Figure 3 It is a schematic top view of the rotating assembly structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the internal structure of the limit box of the present invention;

[0024] Figure 5 It is a schematic diagram of the clamp structure of the present invention;

[0025] Figure 6 It is a front view schematic diagram of the moving mechanism of the present invention;

[0026] Figure 7 It is an enlarged schematic diagram of the lifting assembly structure of the present invention;

[0027] Figure 8 It is a schematic cross-sectional view of the delivery pipe structure of the present invention;

[0028] Fig. 9 It is a bottom view schematic diagram of the ratchet gear structure of the present invention.

[0029] In the figure: 1, operating table; 11, positioning sticker; 2, moving mechanism; 21, guide rail; 22, pushing assembly; 221, material storage box; 2211, built-in groove; 2212, discharge port; 222, slider; 223, hydraulic oil pump; 23, horizontal rack plate; 3, core pulling mechanism; 31, C-shaped frame; 32, lifting assembly; 321, hollow cylinder; 322, circular notch; 323, sliding column; 324, vertical rack plate; 325, triangular block; 326, first gear; 327, rotating rod; 328, chain group; 329, servo motor; 33, conveying pipe; 331, long square tube; 332, U-shaped block; 333, fixed column; 334, rotating plate; 335, limit block; 3 36. curved groove; 337. discharge groove; 338. drop tube; 4. rotating assembly; 41. fixed box; 411. fixed bearing; 412. through-hole; 42. rotating shaft; 43. ratchet gear; 431. external gear; 4311. limit groove; 4312. block; 4313. torsion spring; 432. internal bearing; 433. internal gear; 5. clamping arm; 51. extension arm; 52. limit box; 53. clamping assembly; 531. second drive box; 532. threaded rod; 533. controller; 534. long barrel nut; 535. connecting frame; 536. moving wheel; 54. clamp; 541. fixed block; 542. clamping block; 543. semicircular groove; 544. claw groove. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1-Figure 9 The present invention provides an embodiment: a core pulling machine for producing medical braided tubes, comprising an operating table 1 and a moving mechanism 2, wherein the moving mechanism 2 is installed on the right side of the table of the operating table 1, and the moving mechanism 2 comprises a guide rail 21, a pushing assembly 22 and a transverse rack plate 23, the bottom end of the pushing assembly 22 is connected to two guide rails 21, and the two sets of guide rails 21 are fixedly arranged on the right side of the table of the operating table 1, and the left end of the pushing assembly 22 is installed with a transverse rack plate 23, and the pushing assembly 22 comprises a material storage box 221 and a slider 222, and two sets of sliders are installed at the bottom end of the material storage box 221 222, the slider 222 is sleeved in the guide rail 21, the right end of the material storage box 221 is provided with a hydraulic oil pump 223 to push, the left end of the material storage box 221 is fixed with a transverse rack plate 23, the left end of the mobile mechanism 2 is installed with a core pulling mechanism 3, the core pulling mechanism 3 includes a C-shaped frame 31, a lifting component 32 and a conveying pipe 33, the C-shaped frame 31 is fixed to the left wall of the material storage box 221, the lifting component 32 is installed on the bottom side of the C-shaped frame 31, and the conveying pipe 33 is installed on the top of the C-shaped frame 31. The conveying pipe 33 is perpendicular to the lifting component 32 on the bottom side, and the top of the operating table 1 A rotating assembly 4 is installed on the left side of the end, and the rotating assembly 4 includes a fixed box 41, a rotating shaft 42 and a ratchet gear 43. The rotating shaft 42 is inserted into the interior of the fixed box 41, and the rear side of the ratchet gear 43 engages with the horizontal rack plate 23. The ratchet gear 43 includes an outer gear 431, an inner bearing 432 and an inner gear 433. The inner bearing 432 is provided on the center bottom side of the outer gear 431, and the inner gear 433 is fixedly provided at the center of the inner bearing 432. The center of the rotating shaft 42 is fixedly provided at the center of the inner gear 433. Four sets of clamping arms 5 are installed on the top of the rotating shaft 42. The four sets of clamping arms 5 is fixed at the top of the rotating shaft 42 in the front, back, left and right directions. The four groups of clamping arms 5 have the same structure. A single group of clamping arms 5 includes an extension arm 51 and a limit box 52. The outer end of the extension arm 51 is fixed to the outer wall of the limit box 52. The inner two walls of the limit box 52 are equipped with a clamping assembly 53. A clamp 54 is installed inside the clamping assembly 53. The clamp 54 can drive the clamp 54 to move synchronously toward the center. A positioning sticker 11 is adhered to the vertical lower side of the right clamping arm 5, that is, the table surface of the operating table 1. The positioning sticker 11 is perpendicular to the lifting assembly 32 and the conveying pipe 33.

[0032] As a further feature of the present invention, a built-in groove 2211 is downwardly provided at the top of the material storage box 221, and a discharge port 2212 is provided at the right end of the built-in groove 2211 to facilitate the rotation of the four groups of clamping arms.

[0033] The lifting assembly 32 further includes a hollow cylinder 321 and a sliding cylinder 323. The bottom end of the hollow cylinder 321 is fixed to the inner bottom end of the C-shaped frame 31. The sliding cylinder 323 is sleeved inside the hollow cylinder 321. A circular notch 322 is opened on the right side of the bottom end of the hollow cylinder 321. A vertical tooth plate 324 is installed inside the right end of the sliding cylinder 323. A triangular block 325 is fixed on the top of the sliding cylinder 323. The right end of the vertical tooth plate 324 engages with a first gear 326. The first gear 326 is fixed to the center of the rotating rod 327. The rear side of the rotating rod 327 is inserted into the inner rear side plate of the C-shaped frame 31. A chain group 328 is provided at the front end of the rotating rod 327 to connect the servo motor 329. The servo motor 329 is installed at the inner bottom end of the C-shaped frame 31. The chain group drives the first gear to engage the sliding cylinder to rise, so that the triangular block at the top pushes the core column inside the braided tube body into the conveying tube to reduce the deformation of the braided tube body.

[0034] Furthermore, the conveying pipe 33 includes a long cylindrical square tube 331 and a drop tube 338. The long cylindrical square tube 331 is inserted in the center of the top of the C-shaped frame 31. U-shaped blocks 332 are fixed on both walls of the inner bottom end of the long cylindrical square tube 331. Fixed columns 333 are fixed in the centers of the two groups of U-shaped blocks 332. The centers of the two groups of fixed columns 333 are both sleeved inside the bottom end of the rotating plate 334. A discharge slot 337 is provided on the right side of the top of the long cylindrical square tube 331. The right outer wall of the discharge slot 337 is connected to the left inner wall of the drop tube 338. A limit block 335 is fixed on the top of the inner body of the long cylindrical square tube 331. A curved groove 336 is provided on the right side of the limit block 335, which can facilitate the storage of core columns without manual picking, thereby reducing the number of personnel and reducing production costs.

[0035] As a further feature of the present invention, a fixed bearing 411 is installed at the inner center of the fixed box 41, and the bottom end of the rotating shaft 42 is inserted into the fixed bearing 411. Through openings 412 are provided on the two rear walls of the fixed box 41, and limiting grooves 4311 are provided around the inner ring sides of the external gear 431. A clamping block 4312 is provided in each set of limiting grooves 4311, and a torsion spring 4313 is inserted in each of the clamping blocks 4312. Through this design, semi-automatic operation can be performed by manually loading the braided tube body, thereby further improving efficiency and saving resource consumption.

[0036] Furthermore, the clamping assembly 53 includes a second drive box 531 and a threaded rod 532. The top of the second drive box 531 is connected to a controller 533. The inner side of the second drive box 531 is connected to the threaded rod 532. The threaded rod 532 penetrates and is inserted into the inner rear wall of the limit box 52. Two sets of opposite long barrel nuts 534 are sleeved in the center of the threaded rod 532. The front ends of the two sets of long barrel nuts 534 are fixed with connecting frames 535. The front ends of the connecting frames 535 are fixed with moving wheels 536. 54 includes a fixing block 541 and a clamping block 542. The fixing block 541 is fixedly arranged at the inner center of the two sets of connecting frames 535. The clamping block 542 is fixedly arranged on the inner side of the two sets of fixing blocks 541. The front ends of the two sets of clamping blocks 542 are provided with a semicircular groove 543. The sides of the two sets of clamping blocks 542 are provided with a claw-shaped groove 544. The two sets of clamping blocks 542 can be staggered and interlocked with each other to clamp the main body of the braided tube, so that deformation will not occur during core pulling, thereby improving the quality of the main body of the braided tube after core pulling.

[0037] Working principle: During operation, first place a group of braided tube bodies that need to be cored out on the inner side of the clamp 54 inside the front clamping arm 5, and then press the controller 533 to energize and drive the second drive box 531 to drive the threaded rod 532 connected on the right side to rotate on the rear side inside the limit box 52. When the threaded rod 532 rotates in situ, it can drive two groups of opposite long barrel nuts 534 set in the center to move inward synchronously. When the long barrel nuts 534 move inward, the claw grooves 544 opened in the semicircular grooves 543 on the inner sides of the two groups of clamping blocks 542 can be staggered and interlocked through the connected connecting frame 535 to clamp the braided tube body.Then manually rotate the rotating shaft 42 to clamp the braided tube body of the other three groups of clamping arms 5 in turn. When the four groups of clamping arms 5 complete the clamping, power on and start the hydraulic oil pump 223 to push the storage box 221 and the core pulling mechanism 3 to the specified position on the left end. When the core pulling mechanism 3 moves to the specified position, the lifting assembly 32 and the conveying box 33 inside the C-shaped frame 31 are perpendicular to the braided tube body clamped by the right clamping arm 5. When the storage box 221 moves, the fixed transverse rack plate 23 moves to the left to engage the ratchet gear 43. When the outer gear 431 is engaged and rotated by the transverse rack plate 23, the block 4312 installed in the internal limit groove 4311 will not be pressed by the inner gear under the action of the torsion spring 4313 433 resists, so that the outer gear 431 rotates and the inner gear 433 inside does not rotate. The inner gear 433 does not rotate, so the rotating shaft 42 and the clamping arm 5 do not rotate either. When it is necessary to pull the core of the braided tube body, start the servo motor 329 to drive the chain group 328 to rotate. The rotation of the chain group 328 can drive the inserted rotating rod 327 to rotate. The rotation of the rotating rod 327 can drive the first gear 326 fixed in the center to rotate and engage with the vertical tooth plate 324 on the right wall of the left sliding column 323 to engage and rise. The vertical tooth plate 324 rises and can push the core column in the braided tube body to the top of the long cylindrical square tube 331 through the triangular block 325 fixed at the top. When the core column By pushing upwards through the rotating plate 334 which can only rotate upwards, when the core column is completely pushed out, the servo motor 329 can be started in the reverse direction to return the triangular block 325 to its original position, and the core column remains in the long square tube 331 under the resistance of the rotating plate 334, and then the hydraulic oil pump 223 drives the material storage box 221 and the core pulling mechanism 3 to return to their original positions. When the material storage box 221 returns to its original position, the fixed transverse rack plate 23 can reversely mesh with the external gear 431 to rotate. When the external gear 431 rotates, the torsion spring 4313 in the limiting groove 4311 can lock the block 4312 on the side of the internal gear 433 so that it cannot rotate. When the internal gear 433 cannot rotate, the external gear 431 can rotate. The rotating shaft 42 and the top clamping arm 5 are driven to rotate clockwise by 90 degrees, and the rear clamping arm 5 can be turned to the core pulling position, and the front clamping arm 5 moves to the front position, and the second driving box 531 is started in reverse to take out the braided tube body, and then the braided tube body that needs to be pulled out is placed again for clamping, and the hydraulic oil pump 223 can be started again to work. When the core column in the long square tube 331 continues to rise, it can fall into the built-in groove 221 inside the knife storage box 221 through the right discharge groove 337 and the drop tube 338 under the guidance of the limit block 335 with the curved groove 336. When the core column needs to be taken out, it can be taken out through the discharge port 2212 opened on the right, and the operation ends here. ;

[0038] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and described above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A core pulling machine for producing medical braided tubes, comprising an operating table (1) and a moving mechanism (2), characterized in that: A moving mechanism (2) is installed on the right side of the table top of the operating table (1), and the moving mechanism (2) comprises a guide rail (21), a pushing assembly (22) and a transverse rack plate (23). The bottom end of the pushing assembly (22) is connected to two guide rails (21), and the two groups of guide rails (21) are fixedly arranged on the right side of the table top of the operating table (1). The left end of the pushing assembly (22) is installed with a transverse rack plate (23). The pushing assembly (22) comprises a material storage box (221) and a slider (222). Two groups of sliders (222) are installed at the bottom end of the material storage box (221), and the sliders (222) are sleeved in the guide rails (21). The right end of the material storage box (221) is provided with a liquid The movable mechanism (2) is driven by a hydraulic oil pump (223). A transverse rack plate (23) is fixedly arranged at the left end of the material storage box (221). A core pulling mechanism (3) is installed at the left end of the movable mechanism (2). The core pulling mechanism (3) comprises a C-shaped frame (31), a lifting assembly (32) and a conveying pipe (33). The C-shaped frame (31) is fixedly arranged on the left wall of the material storage box (221). The lifting assembly (32) is installed at the bottom side of the C-shaped frame (31). The conveying pipe (33) is installed at the top end of the C-shaped frame (31). The conveying pipe (33) is perpendicular to the lifting assembly (32) at the bottom side. A rotating assembly (4) is installed at the left side of the top end of the operating table (1). The rotating assembly (4) includes The invention comprises a fixed box (41), a rotating shaft (42) and a ratchet gear (43); the rotating shaft (42) is inserted into the interior of the fixed box (41); the rear side of the ratchet gear (43) is meshed with a transverse rack plate (23); the ratchet gear (43) comprises an outer gear (431), an inner bearing (432) and an inner gear (433); the inner bearing (432) is provided at the center bottom side of the outer gear (431); the inner gear (433) is fixed at the center of the inner bearing (432); the center of the rotating shaft (42) is fixed at the center of the inner gear (433); four groups of clamping arms (5) are installed at the top end of the rotating shaft (42); the four groups of clamping arms (5) are arranged in the front, back, left and right directions. The four groups of clamping arms (5) are fixed on the top of the rotating shaft (42). The structures of the four groups of clamping arms (5) are the same. A single group of the clamping arms (5) comprises an extension arm (51) and a limit box (52). The outer end of the extension arm (51) is fixed on the outer wall of the limit box (52). The inner two walls of the limit box (52) are equipped with a clamping assembly (53). A clamp (54) is installed inside the clamping assembly (53). The clamping assembly (53) can drive the clamp (54) to move synchronously toward the center. A positioning sticker (11) is bonded to the vertical lower side of the right clamping arm (5), i.e., the table surface of the operating table (1). The positioning sticker (11) is perpendicular to the lifting assembly (32) and the conveying pipe (33).

2. A core pulling machine for producing medical braided tubes according to claim 1, characterized in that: A built-in groove (2211) is formed downwardly at the top of the material storage box (221), and a material discharge port (2212) is formed at the right end of the built-in groove (2211).

3. The core pulling machine for producing medical braided tubes according to claim 1, characterized in that: The lifting assembly (32) comprises a hollow cylinder (321) and a sliding column (323). The bottom end of the hollow cylinder (321) is fixedly arranged at the bottom end of the C-shaped frame (31). The sliding column (323) is sleeved inside the hollow cylinder (321). A circular notch (322) is provided on the right side of the bottom end of the hollow cylinder (321). A vertical tooth plate (324) is installed inside the right end of the sliding column (323). A triangular block (325) is fixedly arranged at the top end of the sliding column (323).

4. A core pulling machine for producing medical braided tubes according to claim 3, characterized in that: The right end of the vertical toothed plate (324) meshes with a first gear (326), and the first gear (326) is fixed to the center of a rotating rod (327). The rear side of the rotating rod (327) is inserted into the inner rear side plate of the C-shaped frame (31). A chain group (328) is provided at the front end of the rotating rod (327) to connect to a servo motor (329), and the servo motor (329) is installed at the inner bottom end of the C-shaped frame (31).

5. The core pulling machine for producing medical braided tubes according to claim 1, characterized in that: The conveying pipe (33) comprises a long square tube (331) and a drop tube (338). The long square tube (331) is inserted in the center of the top end of the C-shaped frame (31). U-shaped blocks (332) are fixedly provided on both walls of the inner bottom end of the long square tube (331). Fixed columns (333) are fixedly provided at the centers of two groups of the U-shaped blocks (332). The centers of the two groups of the fixed columns (333) are sleeved inside the bottom end of the rotating plate (334). A discharge slot (337) is provided on the right side of the top end of the long square tube (331). The right outer wall of the discharge slot (337) is connected to the left inner wall of the drop tube (338).

6. A core pulling machine for producing medical braided tubes according to claim 5, characterized in that: A limiting block (335) is fixedly provided at the inner top end of the long square tube (331), and a curved groove (336) is provided on the right side of the limiting block (335).

7. The core pulling machine for producing medical braided tubes according to claim 1, characterized in that: A fixed bearing (411) is installed at the center of the fixed box (41), the bottom end of the rotating shaft (42) is inserted into the fixed bearing (411), and through openings (412) are opened on the two rear walls of the fixed box (41).

8. The core pulling machine for producing medical braided tubes according to claim 1, characterized in that: The inner ring side of the outer gear (431) is surrounded by a limiting groove (4311), and a clamping block (4312) is provided in a single group of the limiting grooves (4311), and a torsion spring (4313) is inserted in each of the clamping blocks (4312).

9. The core pulling machine for producing medical braided tubes according to claim 1, characterized in that: The clamping assembly (53) comprises a second driving box (531) and a threaded rod (532); the top end of the second driving box (531) is connected to a controller (533); the inner side of the second driving box (531) is connected to a threaded rod (532); the threaded rod (532) penetrates and is inserted into the inner rear wall of the limit box (52); two groups of opposite long tube nuts (534) are sleeved at the center of the threaded rod (532); the front ends of the two groups of long tube nuts (534) are fixedly provided with connecting frames (535); and the front ends of the connecting frames (535) are fixedly provided with moving wheels (536).

10. A core pulling machine for producing medical braided tubes according to claim 9, characterized in that: The clamp (54) comprises a fixing block (541) and a clamping block (542). The fixing blocks (541) are fixedly arranged at the inner centers of the two groups of the connecting frames (535). The clamping blocks (542) are fixedly arranged at the inner sides of the two groups of the fixing blocks (541). The front ends of the two groups of the clamping blocks (542) are provided with semicircular grooves (543). The sides of the two groups of the clamping blocks (542) are provided with claw-shaped grooves (544). The two groups of the clamping blocks (542) can be interlaced with each other.

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