Catheter cutting and feeding method

Abstract

The present invention relates to the technical field of cutting and feeding, and discloses a method for cutting and feeding a catheter, comprising the following steps: 1) a catheter is clamped and conveyed by a catheter feeding seat to a positioning seat and passed through a movable seat; 2) when a sensor detects that the catheter feeding seat has moved to a set position, the sensor controls the positioning seat to clamp and position the catheter, and then the sensor controls the catheter feeding seat to release the clamping of the catheter and retreat to the original position; 3) when the positioning seat clamps and positions the catheter, a tool cuts the catheter, and after cutting, a tube strip is formed and positioned in the movable seat; 4) after the tube strip is placed on the movable seat, the movable seat deviates from its position relative to the positioning seat and moves to a feeding position, an insert is inserted into the movable seat, and the tube strip in the movable seat is ejected and placed on a feeding block; the catheter is clamped and conveyed to the positioning seat by the catheter feeding seat, the positioning seat is used to position and clamp the catheter, and then the tool cuts the catheter, thereby solving the problem of an overly complicated feeding process.

Description

Technical Field

[0001] The present invention relates to the technical field of cutting and feeding, and in particular to a method for cutting and feeding a catheter. Background Art

[0002] Pipeline cutting technology has been more widely used in the catheter, oil pipe and other industries. When the cutting equipment is cutting and feeding the catheter, a feeding structure is needed to transport the material.

[0003] In the prior art, when cutting a conveying catheter, the feeding process is too cumbersome to effectively fix the catheter, and the catheter is easily moved during cutting by the cutting equipment, affecting the cutting effect. At the same time, the feeding and discharging of the catheter require manual operation, which is time-consuming, labor-intensive, and inefficient. Summary of the Invention

[0004] The purpose of the present invention is to provide a catheter cutting and feeding method, aiming to solve the problem in the prior art that the feeding process is too complicated.

[0005] The present invention is implemented in this way: the catheter cutting and feeding method comprises the following steps:

[0006] 1) Insert the catheter into a horizontally movable tube delivery seat. The tube delivery seat clamps and delivers the catheter to the positioning seat and passes through the moving seat. The moving position of the tube delivery seat is detected by a sensor. The sensor is electrically connected to the tube delivery seat and the positioning seat respectively. A tool is provided between the moving seat and the positioning seat to cut the catheter to form a tube strip placed in the moving seat.

[0007] 2) When the sensor detects that the tube delivery seat moves to the set position, the sensor controls the positioning seat to clamp and position the catheter, and then controls the tube delivery seat to release the clamping of the catheter and retreat to the original position;

[0008] 3) When the sensor controls the delivery seat to clamp the catheter again and deliver it to the movable seat, the positioning seat releases the clamping and positioning of the catheter until the catheter extends into the movable seat to a set length. When the positioning seat clamps and positions the catheter, the cutter cuts the catheter, and the tube strip formed after cutting is located in the movable seat;

[0009] 4) After the tube is placed on the moving seat, the moving seat deviates from its position relative to the positioning seat and moves to the feeding position. The insert is inserted into the moving seat to push the tube out of the moving seat and place it on the feeding block.

[0010] Furthermore, the tube delivery seat, positioning seat and movable seat are respectively installed on the base, and the tube delivery seat, positioning seat and movable seat are arranged in sequence along the moving direction of the catheter.

[0011] Furthermore, a guide rail for the movement of the tube delivery seat is provided on the base, the guide rail is extended along the movement direction of the catheter, and a limiter is provided on the guide rail for limiting the movement position of the tube delivery seat.

[0012] Furthermore, a slide is provided at the bottom of the pipe delivery seat, and the slide is located on the guide rail; a cylinder for driving the pipe delivery seat to move is connected to the base, and the cylinder is connected to the slide through a telescopic shaft, and the slide is located between the cylinder and the positioning seat.

[0013] Furthermore, the tube feeding seat is provided with a tube feeding hole for the tube to pass through and a movable clamping head for clamping the tube, the movable clamping head is located in the tube feeding hole, and the movable clamping head is electrically connected to the sensor;

[0014] The positioning seat is provided with a positioning hole for the catheter to pass through and a fixed clamping head for clamping the catheter. The fixed clamping head is located in the positioning hole and is electrically connected to the sensor.

[0015] Furthermore, a movable hole for the catheter to pass through is provided in the movable seat, and the center of the movable hole, the center of the positioning hole and the center of the tube delivery hole are arranged relatively along the moving direction of the catheter.

[0016] Furthermore, there is a cutting area arranged at intervals between the movable seat and the positioning seat, and the tool is located in the cutting area.

[0017] Furthermore, the tool is provided with a clamping seat for clamping the tool and moving, and the clamping seat is connected to a driving structure for driving the clamping seat to move up and down, and the driving structure is located between the moving seat and the positioning seat;

[0018] The positioning seat is provided with a longitudinally arranged sliding groove, and the clamping seat abuts in the sliding groove and slides in cooperation with the positioning seat.

[0019] Furthermore, the movable seat is provided with a positioning structure for preventing the catheter from actively separating from the movable seat, and the positioning structure is located between the positioning seat and the movable seat; the positioning structure includes a telescopic slide rod and a positioning head abutting against the end of the tube strip, the positioning head has an inner end face facing the catheter and an outer end face facing the tool, the outer end face and the inner end face are arranged opposite to each other, the inner end face is arranged obliquely from top to bottom toward the outer end face, and the outer end face is arranged obliquely from bottom to top toward the inner end face, and the inner end face has an inwardly concave clamping groove for clamping the tube strip;

[0020] The positioning head is connected to the outer end of the telescopic slide rod, the inner end of the telescopic slide rod is embedded in the movable seat, and the movable seat has a mounting groove for inserting the telescopic slide rod, the mounting groove and the telescopic slide rod are connected by a spring, the mounting groove is located on the outer periphery of the movable hole, and the mounting groove is tilted from the outside to the inside away from the movable hole;

[0021] When the tube delivery seat clamps and delivers the catheter to the movable seat, the catheter presses against the inner end surface of the positioning head, and pushes the positioning head to drive the telescopic slide rod to move into the installation groove until the catheter passes through the movable hole, and the positioning head abuts against the outer periphery of the catheter;

[0022] During the process of the cutter cutting the conduit, the cutter presses against the outer end surface of the positioning head and pushes the positioning head to drive the telescopic slide bar to move into the installation groove again, until the conduit is cut and the tube strip is located in the movable seat, and the positioning head abuts against the outer periphery of the tube strip;

[0023] When the movable seat deviates from the position relative to the positioning seat and moves to the feeding position, the spring drives the positioning head to move onto the tube strip through the telescopic slide rod, and clamps and positions the tube strip through the clamping groove on the inner end surface.

[0024] Furthermore, a limit bar is provided on the outer end of the telescopic slide rod to limit the telescopic slide rod from being separated from the mounting groove. A spacing area is provided between the bottom of the limit bar and the bottom of the mounting groove. The spring is located in the spacing area and connected to the limit bar.

[0025] The inner end surface and the outer end surface are respectively provided with balls, and the tops of the balls are exposed outside the positioning head.

[0026] Compared with the prior art, the catheter cutting and feeding method provided by the present invention solves the problem of the feeding process being too complicated, by clamping the conveying catheter into the positioning seat through the pipe delivery seat, positioning and clamping the catheter by the positioning seat, and then cutting the catheter by the tool; the moving position of the pipe delivery seat is detected by the sensor, and when the sensor detects that the pipe delivery seat clamps the conveying catheter to the set position, the sensor simultaneously controls the pipe delivery seat to release the clamping of the catheter and controls the positioning seat to position and clamp the catheter for the tool to cut, and solves the problem of unstable catheter cutting by clamping and conveying the catheter and cutting and clamping and positioning the catheter throughout the process; the pipe strip formed after the catheter cutting is completed is clamped by the movable seat, and the pipe strip is pushed out and placed on the feeding block by the inserting strip, completing the workflow of conveying, positioning, cutting and discharging the catheter, and the structural design is simple and practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view schematic diagram of the catheter cutting and feeding structure corresponding to the catheter cutting and feeding method provided by the present invention;

[0028] Figure 2 It is a top view schematic diagram of the catheter cutting and feeding structure corresponding to the catheter cutting and feeding method provided by the present invention;

[0029] Figure 3 It is a structural schematic diagram of the positioning seat and the moving seat provided by the present invention;

[0030] Figure 4 It is a structural schematic diagram of the mobile seat provided by the present invention;

[0031] Figure 5 This invention Figure 4 A is an enlarged schematic diagram.

[0032] In the figure: catheter 100, tube feeding seat 200, positioning seat 300, movable seat 400, tool 500, base 600, guide rail 700, cylinder 800, positioning structure 900, tube strip 101, slide seat 201, movable clamping head 202, fixed clamping head 301, slide groove 302, mounting groove 401, spring 402, clamping seat 501, limiter 701, telescopic shaft 801, telescopic slide rod 901, positioning head 902, inner end surface 903, outer end surface 904, limit strip 905, ball bearing 906. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] The implementation of the present invention is described in detail below with reference to specific embodiments.

[0035] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "up", "down", "left", "right", etc. indicate directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting the present invention. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0036] Reference Figure 1-5 The figure shows a preferred embodiment of the present invention.

[0037] The method for cutting and feeding the catheter 100 comprises the following steps:

[0038] 1) Insert the catheter 100 into the horizontally movable tube delivery seat 200. The tube delivery seat 200 clamps and delivers the catheter 100 to the positioning seat 300 and passes through the movable seat 400. The moving position of the tube delivery seat 200 is detected by a sensor. The sensor is electrically connected to the tube delivery seat 200 and the positioning seat 300. A cutter 500 is provided between the movable seat 400 and the positioning seat 300 to cut the catheter 100 to form the tube strip 101 placed in the movable seat 400.

[0039] 2) When the sensor detects that the tube delivery seat 200 moves to the set position, the sensor controls the positioning seat 300 to clamp and position the catheter 100, and then controls the tube delivery seat 200 to release the clamping of the catheter 100 and retreat to the original position;

[0040] 3) The sensor controls the tube delivery seat 200 to grip the catheter 100 again and transport it to the movable seat 400. The positioning seat 300 releases the gripping and positioning of the catheter 100 until the catheter 100 extends into the movable seat 400 to a set length. While the positioning seat 300 grips and positions the catheter 100, the cutter 500 cuts the catheter 100. After cutting, the tube strip 101 is formed and located in the movable seat 400.

[0041] 4) After the tube strip 101 is placed on the movable seat 400, the movable seat 400 deviates from the position relative to the positioning seat 300 and moves to the feeding position. The insertion rod is inserted into the movable seat 400 to push the tube strip 101 in the movable seat 400 out and place it on the feeding block.

[0042] The above-mentioned method for cutting and feeding the catheter 100 provides a method for clamping the conveying catheter 100 to the positioning seat 300 by the pipe feeding seat 200, and using the positioning seat 300 to position and clamp the catheter 100, and then using the cutter 500 to cut the catheter 100, thereby solving the problem of the feeding process being too complicated; the moving position of the pipe feeding seat 200 is detected by the sensor. When the sensor detects that the pipe feeding seat 200 clamps the conveying catheter 100 to the set position, the sensor simultaneously controls the pipe feeding seat 200 to release the clamping of the catheter 100 and controls the positioning seat 300 to position and clamp the catheter 100 for cutting by the cutter 500. By clamping, conveying and cutting and clamping and positioning the catheter 100 throughout the entire process of conveying and cutting, the problem of unstable cutting of the catheter 100 is solved; the tube strip 101 formed after the cutting of the catheter 100 is clamped by the movable seat 400, and the tube strip 101 is pushed out and placed on the feeding block by the inserting strip, completing the workflow of conveying, positioning, cutting and discharging the catheter 100. The structural design is simple and practical.

[0043] The tube delivery seat 200 , the positioning seat 300 and the movable seat 400 are respectively installed on the base 600 , and the tube delivery seat 200 , the positioning seat 300 and the movable seat 400 are arranged in sequence along the moving direction of the catheter 100 ; this facilitates the directional delivery of the catheter 100 .

[0044] A guide rail 700 is provided on the base 600 for the movement of the delivery tube seat 200. The guide rail 700 extends along the movement direction of the catheter 100. A limiter 701 is provided on the guide rail 700 to limit the movement position of the delivery tube seat 200. The limiter 701 is located between the delivery tube seat 200 and the positioning seat 300. In this way, the stability of the delivery tube seat 200 when clamping the delivery catheter 100 is increased, and the movement position of the delivery tube seat 200 is limited by the limiter 701 to prevent the delivery tube seat 200 from colliding with the positioning seat 300 or detaching from the guide rail 700.

[0045] A slide 201 is provided at the bottom of the tube delivery seat 200, and the slide 201 is located on the guide rail 700; the guide rail 700 is conveniently installed, disassembled, cleaned or maintained with the slide 201; a cylinder 800 for driving the tube delivery seat 200 to move is connected to the base 600, and the cylinder 800 is connected to the slide 201 through a telescopic shaft 801, and the slide 201 is located between the cylinder 800 and the positioning seat 300; in this way, the cylinder 800 can push the slide 201 to move on the guide rail 700 through the telescopic shaft 801, thereby controlling the movement of the tube delivery seat 200.

[0046] In this embodiment, the tube delivery seat 200 is provided with a tube delivery hole for the tube 100 to pass through and a movable clamping head 202 for clamping the tube 100. The movable clamping head 202 is located in the tube delivery hole and is electrically connected to the sensor.

[0047] The positioning seat 300 is provided with a positioning hole for the catheter 100 to pass through and a fixed clamping head 301 for clamping the catheter 100. The fixed clamping head 301 is located in the positioning hole and is electrically connected to the sensor.

[0048] The tube delivery seat 200 increases the directional stability of the catheter 100 during delivery through the tube delivery hole, and then clamps and drags the catheter 100 during delivery through the movable clamping head 202 to prevent the tube delivery seat 200 from deflecting when delivering the catheter 100;

[0049] The positioning seat 300 increases the orientation and stability of the catheter 100 during transportation through the positioning hole, and then clamps and positions the catheter 100 during cutting through the fixed clamping head 301 to prevent the catheter 100 from moving or deviating during cutting;

[0050] When the sensor detects that the delivery tube seat 200 clamps the delivery tube 100 to the set position, the sensor is used to simultaneously control the movable clamping head 202 to release the clamping of the tube 100 and to control the fixed clamping head 301 to position and clamp the tube 100 for cutting by the tool 500. By clamping and conveying the tube 100 and positioning the cutting clamp during the entire process of delivery and cutting, the problem of unstable cutting of the tube 100 is solved.

[0051] The movable seat 400 is provided with a movable hole for the catheter 100 to pass through. The center of the movable hole, the center of the positioning hole and the center of the tube delivery hole are relatively arranged along the moving direction of the catheter 100; this can effectively improve the stability of the catheter 100 during transportation and reduce the friction loss of the catheter 100 during transportation.

[0052] There is a cutting area arranged at intervals between the movable seat 400 and the positioning seat 300, and the tool 500 is located in the cutting area; the positioning seat 300 clamps and positions the catheter 100, so that the catheter 100 will not be offset when the tool 500 cuts in the cutting area.

[0053] The cutter 500 is provided with a clamping seat 501 for holding the cutter 500 in motion. The clamping seat 501 is connected to a driving structure for driving the clamping seat 501 to move up and down. The driving structure is located between the moving seat 400 and the positioning seat 300. In this way, the driving structure can drive the cutter 500 toward the catheter 100 to perform cutting work by driving the clamping seat 501.

[0054] The positioning seat 300 is provided with a longitudinally arranged sliding groove 302, and the clamping seat 501 abuts against the sliding groove 302 and slides with the positioning seat 300; the positioning seat 300 allows the clamping seat 501 to slide in the sliding groove 302, which can effectively improve the stability of the clamping seat 501 when moving up and down, and avoid the deviation of the tool 500 during cutting, resulting in inconsistent lengths of the cut catheter 100.

[0055] In this embodiment, the movable seat 400 is provided with a positioning structure 900 for preventing the catheter 100 from actively separating from the movable seat 400. The positioning structure 900 is located between the positioning seat 300 and the movable seat 400. The positioning structure 900 includes a telescopic slide rod 901 and a positioning head 902 abutting against the end of the tube strip 101. The positioning head 902 has an inner end surface 903 facing the catheter 100 and an outer end surface 904 facing the tool 500. The outer end surface 904 and the inner end surface 903 are arranged opposite to each other. The inner end surface 903 is inclined from top to bottom toward the outer end surface 904, and the outer end surface 904 is inclined from bottom to top toward the inner end surface 903. The inner end surface 903 has an inwardly concave clamping groove for clamping the tube strip 101.

[0056] The positioning head 902 is connected to the outer end of the telescopic slide 901. The inner end of the telescopic slide 901 is embedded in the movable base 400. The movable base 400 has a mounting groove 401 for inserting the telescopic slide 901. The mounting groove 401 and the telescopic slide 901 are connected by a spring 402. The mounting groove 401 is located on the outer periphery of the movable hole and is arranged obliquely from the outside to the inside, away from the movable hole.

[0057] When the tube delivery base 200 clamps and delivers the catheter 100 to the movable base 400, the catheter 100 presses against the inner end surface 903 of the positioning head 902, and pushes the positioning head 902 to drive the telescopic slide 901 to move into the installation groove 401 until the catheter 100 passes through the movable hole and the positioning head 902 abuts against the outer periphery of the catheter 100;

[0058] During the process of cutting the catheter 100, the cutter 500 presses against the outer end surface 904 of the positioning head 902, pushing the positioning head 902 to drive the telescopic slide 901 to move again into the installation groove 401, until the catheter 100 is cut into a tube strip 101 located in the movable seat 400, and the positioning head 902 abuts against the outer periphery of the tube strip 101;

[0059] When the movable seat 400 deviates from its position relative to the positioning seat 300 and moves to the feeding position, the spring 402 drives the positioning head 902 to move onto the tube strip 101 through the telescopic slide rod 901, and clamps and positions the tube strip 101 through the clamping groove on the inner end surface 903.

[0060] The positioning structure 900 can limit the movement of the movable seat 400 relative to the positioning seat 300. The spring 402 drives the positioning head 902 to move onto the tube 101 through the telescopic slide 901, and the tube 101 is clamped and positioned by the clamping groove on the inner end surface 903, preventing the tube 101 from actively disengaging when the movable seat 400 moves.

[0061] It can also ensure that the tube strip 101 is oriented and stable when the insert pushes the tube strip 101 out.

[0062] In this embodiment, a limit bar 905 is provided on the outer end of the telescopic slide bar 901 to prevent the telescopic slide bar 901 from being separated from the mounting slot 401. A spacing area is provided between the bottom of the limit bar 905 and the bottom of the mounting slot 401. The spring 402 is located in the spacing area and is connected to the limit bar 905.

[0063] Balls 906 are respectively provided on the inner end surface 903 and the outer end surface 904 , and the tops of the balls 906 are exposed outside the positioning head 902 .

[0064] The limit bar 905 can prevent the telescopic slide rod 901 from automatically detaching from the mounting groove 401 when it is popped out by the spring 402, and the inner end surface 903 and the outer end surface 904 can reduce the contact area of ​​the catheter 100 or the tool 500 through the ball bearings 906, thereby reducing the friction loss when the catheter 100 or the tool 500 contacts the inner end surface 903 or the outer end surface 904.

[0065] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A catheter cutting and feeding method, characterized in that: The steps include: 1) Insert the catheter into a horizontally movable tube delivery seat. The tube delivery seat clamps and delivers the catheter to the positioning seat and passes through the moving seat. The moving position of the tube delivery seat is detected by a sensor. The sensor is electrically connected to the tube delivery seat and the positioning seat respectively. A tool is provided between the moving seat and the positioning seat to cut the catheter to form a tube strip placed in the moving seat. 2) When the sensor detects that the tube delivery seat moves to the set position, the sensor controls the positioning seat to clamp and position the catheter, and then controls the tube delivery seat to release the clamping of the catheter and retreat to the original position; 3) When the sensor controls the delivery seat to clamp the catheter again and deliver it to the movable seat, the positioning seat releases the clamping and positioning of the catheter until the catheter extends into the movable seat to a set length. When the positioning seat clamps and positions the catheter, the cutter cuts the catheter, and the tube strip formed after cutting is located in the movable seat; 4) After the tube strip is placed on the moving seat, the moving seat deviates from its position relative to the positioning seat and moves to the feeding position. The insert rod is inserted into the moving seat to push the tube strip out of the moving seat and place it on the feeding block; The tube feeding seat is provided with a tube feeding hole for the tube to pass through and a movable clamping head for clamping the tube. The movable clamping head is located in the tube feeding hole and is electrically connected to the sensor. The positioning seat is provided with a positioning hole for the catheter to pass through and a fixed clamping head for clamping the catheter, the fixed clamping head is located in the positioning hole, and the fixed clamping head is electrically connected to the sensor; The movable seat is provided with a movable hole for the catheter to pass through, and the center of the movable hole, the center of the positioning hole and the center of the tube feeding hole are arranged relatively along the moving direction of the catheter; The movable seat is provided with a positioning structure for preventing the catheter from actively separating from the movable seat, and the positioning structure is located between the positioning seat and the movable seat; the positioning structure includes a telescopic slide rod and a positioning head abutting against the end of the tube strip, the positioning head has an inner end face facing the catheter and an outer end face facing the tool, the outer end face and the inner end face are arranged opposite to each other, the inner end face is arranged obliquely from top to bottom toward the outer end face, and the outer end face is arranged obliquely from bottom to top toward the inner end face, and the inner end face has a clamping groove that is concave inwardly for clamping the tube strip; The positioning head is connected to the outer end of the telescopic slide rod, the inner end of the telescopic slide rod is embedded in the movable seat, and the movable seat has a mounting groove for inserting the telescopic slide rod, the mounting groove and the telescopic slide rod are connected by a spring, the mounting groove is located on the outer periphery of the movable hole, and the mounting groove is tilted from the outside to the inside away from the movable hole; When the tube delivery seat clamps and delivers the catheter to the movable seat, the catheter presses against the inner end surface of the positioning head, and pushes the positioning head to drive the telescopic slide rod to move into the installation groove until the catheter passes through the movable hole, and the positioning head abuts against the outer periphery of the catheter; During the process of the cutter cutting the conduit, the cutter presses against the outer end surface of the positioning head and pushes the positioning head to drive the telescopic slide bar to move into the installation groove again, until the conduit is cut and the tube strip is located in the movable seat, and the positioning head abuts against the outer periphery of the tube strip; When the movable seat deviates from the position relative to the positioning seat and moves to the feeding position, the spring drives the positioning head to move onto the pipe strip through the telescopic slide rod, and clamps and positions the pipe strip through the clamping groove on the inner end surface.

2. The catheter cutting and feeding method according to claim 1, wherein: The pipe delivery seat, the positioning seat and the movable seat are respectively installed on the base, and the pipe delivery seat, the positioning seat and the movable seat are arranged in sequence along the moving direction of the catheter.

3. The catheter cutting and feeding method according to claim 2, wherein: A guide rail for the movement of the tube delivery seat is provided on the base, the guide rail is extended along the movement direction of the catheter, and a limiter for limiting the movement position of the tube delivery seat is provided on the guide rail.

4. The catheter cutting and feeding method according to claim 3, wherein: A slide is provided at the bottom of the pipe delivery seat, and the slide is located on the guide rail; a cylinder for driving the pipe delivery seat to move is connected to the base, and the cylinder is connected to the slide through a telescopic shaft, and the slide is located between the cylinder and the positioning seat.

5. The catheter cutting and feeding method according to any one of claims 1 to 4, characterized in that: A cutting area is arranged at intervals between the movable seat and the positioning seat, and the tool is located in the cutting area.

6. The catheter cutting and feeding method according to claim 5, characterized in that: The tool is provided with a clamping seat for clamping the tool and moving, and the clamping seat is connected to a driving structure for driving the clamping seat to move up and down, and the driving structure is located between the moving seat and the positioning seat; The positioning seat is provided with a longitudinally arranged sliding groove, and the clamping seat abuts in the sliding groove and slides in cooperation with the positioning seat.

7. The catheter cutting and feeding method according to any one of claims 1 to 4, characterized in that: The outer end of the telescopic slide rod is provided with a limit bar for limiting the telescopic slide rod from being separated from the mounting groove. A spacing area is provided between the bottom of the limit bar and the bottom of the mounting groove. The spring is located in the spacing area and connected to the limit bar. The inner end surface and the outer end surface are respectively provided with balls, and the tops of the balls are exposed outside the positioning head.

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