Binding device with drawstring tying function

Abstract

The invention provides a drawing rope tying binding device which comprises a punching assembly and a knotting assembly, meanwhile, through rotation of a third stepping motor, accurate reciprocating movement of an arc-shaped variable-diameter needle head in the axis direction of a through hole of a punching platform is achieved, it is ensured that the punching position is accurate each time, and under driving of a second stepping motor, a fluted disc is driven to rotate, so that the binding efficiency is improved. The rope clamping mechanism and the knotting mechanism are driven to act through the first sector rack, the second sector rack and the third sector rack correspondingly, and clamping, knotting and other operations of a rope are achieved. The arc-shaped block drives the rope releasing mechanism to act at a proper time to complete releasing of a rope knot so as to complete binding of the pulling rope knot, compared with a buckled stitching needle, the binding mode is easier to manually open, book paper which is mistakenly fixed can be easily adjusted or added paper can be disassembled, 180-degree full-width opening can be achieved after binding, the rope material is soft, and the binding effect is good. And more comfortable writing and reading experience can be provided.

Description

Technical Field

[0001] This invention relates to the field of bookbinding, and more specifically to a binding device with drawstring ties. Background Technology

[0002] Binding devices are commonly used tools in people's daily study, work and life. They are widely used in office, textile, handicraft and other fields to effectively fix different materials such as paper, cloth and leather.

[0003] In the process of developing this solution, the inventors discovered that existing binding solutions on the market still have shortcomings in terms of actual needs in daily life. For example, when the binding material is thick, one side always needs to be pressed down when turning the pages, otherwise it will be easy to close. Furthermore, since the thickness of the spine cannot be changed, the spine is always easy to be obstructed when writing. Excessive pressure on the spine will damage the binding. At the same time, once the pages are removed, they cannot be bound back together.

[0004] In view of this, the inventor has specifically designed a binding device for drawstring tying, and this invention arises from this. Summary of the Invention

[0005] To solve the above problems, the technical solution of the present invention is as follows: A drawstring binding device includes a fixing frame and a distance measuring and pressing system. A punching platform is fixed on the fixing frame. The distance measuring and pressing system is used to detect material thickness and press the material. The distance measuring and pressing system includes a pressure plate, and the material is placed between the pressure plate and the punching platform. The device also includes: A punching assembly includes a punching needle, a first drive shaft, and a third stepper motor. The punching needle includes a base and an arc-shaped variable diameter needle head. The arc-shaped variable diameter needle head includes a needle tip and a needle shank. The diameter of the arc-shaped variable diameter needle head gradually increases from the needle tip to the needle shank. The needle shank of the arc-shaped variable diameter needle head is fixedly connected to one end of the base. The other end of the base is fixedly connected to the middle of the first drive shaft. Both ends of the first drive shaft are rotatably connected to a fixed frame. One end of the first drive shaft is connected to the output shaft of the third stepper motor. The third stepper motor is fixedly connected to the fixed frame. The punching platform has a through hole. The arc-shaped variable diameter needle head is correspondingly arranged with the through hole. The third stepper motor drives the base to rotate around the end of the base near the first drive shaft as the center and the length of the base as the radius along the axis of the through hole, thereby driving the needle tip of the arc-shaped variable diameter needle head to reciprocate along the axis of the through hole to perform a punching operation by penetrating the material. The knotting assembly includes a drive gear, a rope clamping mechanism, a knotting mechanism, a rope unwinding mechanism, and a second stepper motor. The drive gear is connected to the second stepper motor. The inner ring of the drive gear has a first sector rack and a second sector rack, the outer ring has a third sector rack fixed thereon, and the innermost ring has an arc-shaped block. The rope clamping mechanism has a worm gear that meshes with the first and second sector racks. The first and second sector racks are spaced apart along the inner ring. The knotting mechanism has a second bevel gear that meshes with the third sector rack. The center of the arc-shaped block protrudes outward. The rope unwinding mechanism has a contact rod. When the arc-shaped block rotates to the end of the contact rod near the drive gear, the arc-shaped block pushes the end of the contact rod to make the rope unwinding mechanism complete the rope unwinding action.

[0006] Preferably, the rope clamping mechanism includes a rope clamping disc, a rope clamping adjuster, and a turbine. The rope clamping disc is mounted on a fixed frame via bearings. The rope clamping disc and the turbine are coaxially fixed. The turbine meshes with one end of a worm gear. A first bevel gear is fixed to the other end of the worm gear. The first bevel gear cooperates with a first sector rack and a second sector rack. The rope clamping disc has several slots inside. The rope clamping adjuster has several plates that insert into the slots. The rope clamping disc controls the clamping force by adjusting the distance between the slots and the plates.

[0007] Preferably, the knotting mechanism includes a knotting nozzle and a knotting nozzle upper jaw, the third sector rack cooperates with the second bevel gear, the second bevel gear extends downward with a gear shaft, the gear shaft is fixedly connected to the top of the knotting nozzle, and the bottom of the knotting nozzle is provided with an eagle beak structure and is hinged to the knotting nozzle upper jaw by a torsion spring.

[0008] Preferably, the upper jaw end of the knotting beak is equipped with a pulley, and a frame sleeve is fitted on the gear shaft. The pulley slides along the arc-shaped edge at the bottom of the frame sleeve to control the opening and closing of the beak.

[0009] Preferably, the rope-removing mechanism includes a rope-cutting arm, one end of which is provided with a contact rod that cooperates with an arc-shaped block. The contact rod is slidably abutted against the periphery of the drive gear plate. The other end of the rope-cutting arm is provided with a blade. The arc-shaped block is used to drive the rope-cutting arm to swing, thereby driving the blade to cut the binding rope and remove the knot.

[0010] Preferably, the arc-shaped variable diameter needle has a rope groove in the middle and a rope threading hole at the top.

[0011] Preferably, a guide device is installed inside the rope threading hole.

[0012] Preferably, the ranging and pressing system is located on the front of the device and fixed above the drilling platform. The ranging and pressing system includes an ultrasonic ranging module, a cam drive mechanism, and a first stepper motor. The ultrasonic ranging module is installed on the front of the mounting frame, the first stepper motor is fixedly installed on the top of the mounting frame, and the cam drive mechanism is fixedly connected to the output shaft of the first stepper motor. The cam drive mechanism is used to control the advancing distance of the push rod, and a pressure plate is provided at the bottom of the push rod.

[0013] Preferably, the push rod is fitted with a spring.

[0014] The technical solution provided by this invention has the following beneficial effects: This invention uses the rotation of a third stepper motor to drive the base to rotate, thereby enabling the arc-shaped variable-diameter needle to move precisely back and forth along the axis of the through hole of the punching platform. This ensures accurate positioning and consistent depth for each punch, resulting in a stable and reliable punching effect. Simultaneously, the drive gear in the knotting assembly is connected to the second stepper motor via a second transmission shaft. Driven by the second stepper motor, the gear rotates, driving the rope clamping mechanism and the knotting mechanism through the first, second, and third sector racks, respectively, to perform operations such as clamping and knotting the rope. The arc-shaped block then drives the rope release mechanism at the appropriate time to release the knot, thus completing the binding with a pull-string knot. This binding method is easier to open manually than using staples, allowing for easy adjustment of misplaced pages or removal and addition of pages. Furthermore, the bound book can be opened 180° after binding, and the soft rope provides a more comfortable writing and reading experience. Attached Figure Description

[0015] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0016] in: Figure 1 This is the right view of the present invention; Figure 2 This is the left view of the present invention; Figure 3 This is a front view of the present invention; Figure 4 This is a rear view of the present invention; Figure 5 This is a front view of the knotter of the present invention; Figure 6 This is a side view of the knotter of the present invention; Figure 7 This is a front view of the drive wheel of the present invention; Figure 8 This is a top view of the knotting needle of the present invention; Figure 9 This is a front view of the push rod of the present invention.

[0017] Label Explanation: In the diagram: 1. Distance measuring and clamping system; 2. Punching and knotting mechanism; 3. Punching platform; 4. Ultrasonic ranging module; 5. Drive mechanism; 6. First stepper motor; 7. Punching assembly; 8. Knotting assembly; 9. Punching needle; 10. Power system; 11. Drive gear; 12. Control board; 101. Rope clamping mechanism; 102. Knotting mechanism; 103. Rope release mechanism; 104. Rope cutting arm; 105. Blade; 107. Second bevel gear; 108. Knotting nozzle; 109. Knotting nozzle upper jaw; 110. Frame sleeve; 111. Pulley; 201. Upper outer shell; 2 02. First drive shaft; 203. Push rod; 204. Base; 205. Arc-shaped variable diameter needle; 206. Second stepper motor; 207. Spring; 208. Cam; 210. Second drive shaft; 301. First sector rack; 302. Second sector rack; 303. Third sector rack; 304. Arc block; 401. First bevel gear; 402. Turbine; 403. Worm gear; 404. Rope clamping disc; 405. Rope clamping adjuster; 501. Third stepper motor; 502. Rope release shaft; 503. Rope coil; 504. Lower outer shell; 505. Pressure plate. Detailed Implementation

[0018] To make the technical problems, solutions, and beneficial effects of this invention clearer, the 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 merely illustrative and not intended to limit the scope of the invention.

[0019] Please see Figures 1-9 This is a drawstring binding device, which is the preferred embodiment of the present invention. It includes a fixing frame and a distance measuring and pressing system 1. The fixing frame includes an upper outer shell 201 and a lower outer shell 504. The upper outer shell 201 and the lower outer shell 504 are fixedly connected. A punching platform 3 is fixed on the top of the lower outer shell 504. A control plate 12 is installed on the side wall of the upper outer shell 201. The punching assembly 7 includes a punching needle 9, a first drive shaft 202, and a third stepper motor 501. The punching needle 9 includes a base 204 and an arc-shaped variable diameter needle head 205. The arc-shaped variable diameter needle head 205 includes a needle tip and a needle shank. The diameter of the arc-shaped variable diameter needle head 205 gradually increases from the needle tip to the needle shank. The needle shank of the arc-shaped variable diameter needle head 205 is fixedly connected to one end of the base 204. The other end of the base 204 is fixedly connected to the middle of the first drive shaft 202. Both ends of the first drive shaft 202 are rotatably connected to a fixed frame. One end of the first drive shaft 202 is connected to the output shaft of the third stepper motor 501. The third stepper motor 501 is fixedly connected to the fixed frame. The punching platform 3 has a through hole, and the arc-shaped variable diameter needle head 205 is correspondingly arranged with the through hole. The third stepper motor 501 carries... The movable base 204 rotates along the axis of the through hole with the end of the base 204 near the first drive shaft 202 as the center and the length of the base 204 as the radius. This drives the tip of the arc-shaped variable diameter needle 205 to reciprocate along the axis of the through hole to perform a punching operation through the material. The third stepper motor 501 is fixedly connected to the lower housing 504 and is electrically connected to the control board 12. The control board 12 can precisely control the rotation of the third stepper motor 501, thereby realizing the precise reciprocating movement of the arc-shaped variable diameter needle 205 along the axis of the through hole of the punching platform 3. This ensures that the position and depth of each punch are accurate and consistent, and the punching effect is stable and reliable. It can meet the punching requirements of different binding materials and provides a good foundation for subsequent drawstring tying operations. The knotting assembly 8 includes a drive gear 11, a rope clamping mechanism 101, a knotting mechanism 102, a rope unwinding mechanism 103, and a second stepper motor 206. The drive gear 11 is connected to the second stepper motor 206. The inner ring of the drive gear 11 is provided with a first sector-shaped rack 301 and a second sector-shaped rack 302, the outer ring is fixed with a third sector-shaped rack 303, and the innermost ring is provided with an arc-shaped block 304. The rope clamping mechanism 101 has a worm gear 403 that meshes with the first sector-shaped rack 301 and the second sector-shaped rack 302. The first sector-shaped rack 301 and the second sector-shaped rack 302 are spaced apart along the inner ring. The knotting mechanism 102 has a mechanism that meshes with the third sector-shaped rack 303. The second bevel gear 107 has an arc-shaped block 304 that protrudes outward from its center. The rope-removing mechanism 103 has a contact rod. When the arc-shaped block 304 rotates to the end of the contact rod near the drive gear 11, the arc-shaped block 304 pushes the end of the contact rod, so that the rope-removing mechanism 103 completes the rope-removing action. The second stepper motor 206 is the power system 10. Driven by the second stepper motor 206, the drive gear 11 rotates, which drives the rope clamping mechanism 101 and the knotting mechanism 102 to perform operations such as clamping and knotting the rope through each sector rack. The arc-shaped block 304 drives the rope-removing mechanism 103 to perform operations at the appropriate time, so as to complete the rope knot removal. This ingenious transmission design makes the various actions in the knotting process orderly connected, improves the efficiency and reliability of knotting, and can quickly complete the rope pulling and knotting work of binding materials, adapting to the needs of binding operations with different rhythms. The punching component 7 and the knotting component 8 together constitute the punching and knotting cooperation mechanism 2.

[0020] For details, please refer to Figures 1-4 The rope clamping mechanism 101 includes a rope clamping disc 404, a rope clamping adjuster 405, and a worm gear 402. The rope clamping disc 404 is mounted on a fixed frame via bearings. The rope clamping disc 404 and the worm gear 402 are coaxially fixed. The worm gear 402 meshes with one end of a worm 403. A first bevel gear 401 is fixed to the other end of the worm gear 403. The first bevel gear 401 engages with a first sector rack 301 and a second sector rack 302. The rope clamping disc 404 has several slots inside for rope clamping adjustment. The device 405 is equipped with several insert slots and clamping plates. The rope clamping disc 404 controls the clamping force by adjusting the distance between the slots and the clamping plates. The second stepper motor 206 rotates at a certain angle to drive the drive gear disc 11, so that the first sector rack 301 drives the first bevel gear 401, and further drives the worm gear 402 to drive the rope clamping disc 404 to rotate. At the same time, when the arc-shaped variable diameter needle 205 is above one of the notches, the rope in the previous notch is disengaged from the rope clamping adjuster 405, and the previous section of the rope is released.

[0021] For details, please refer to Figures 1-6The knotting mechanism 102 includes a second bevel gear 107, a knotting nozzle 108, and a knotting nozzle upper jaw 109. A third sector rack 303 cooperates with the second bevel gear 107. The second bevel gear 107 extends downward with a gear shaft, which is fixedly connected to the top of the knotting nozzle 108. The bottom of the knotting nozzle 108 is provided with an eagle beak structure and is hinged to the knotting nozzle upper jaw 109 by a torsion spring. The second stepper motor 206 rotates at a certain angle to drive the drive gear disk 11, so that the third sector rack 303 drives the second bevel gear 107, further causing the knotting nozzle 108 and the knotting nozzle upper jaw 109 to rotate. The knotting nozzle 108 and the knotting nozzle upper jaw 109 are concentrically fitted with torsion springs, so that the knotting nozzle 108 and the knotting nozzle upper jaw 109 maintain a closed tendency. The undulating arc of the bottom edge of the frame sleeve 110, together with the torsion spring, controls the opening and closing of the eagle beak. In this way, the eagle beak knotter ties a knot after rotating one revolution.

[0022] For details, please refer to Figure 5 and Figure 6 The upper jaw 109 of the knotting beak is equipped with a pulley 111 at its tail end. A frame sleeve 110 is fitted on the gear shaft. The pulley 111 slides along the arc-shaped edge at the bottom of the frame sleeve 110. The pulley 111 contacts the arc-shaped edge at the bottom of the frame sleeve 110 to control the opening and closing of the beak.

[0023] For details, please refer to Figures 1 to 7 The rope-removing mechanism 103 includes a rope-cutting arm 104. One end of the rope-cutting arm 104 is provided with a contact rod that cooperates with the arc-shaped block 304. The contact rod slidably abuts against the periphery of the drive gear plate 11. The arc-shaped block 304 is used to drive the rope-cutting arm 104 to swing, thereby driving the blade 105 to cut the binding rope and remove the knot. The second stepper motor 206 rotates at a certain angle to drive the drive gear plate 11. The contact between the rope-cutting arm 104 and the innermost ring of the drive gear plate 11 encounters the arc-shaped block 304, pressing down one end of the rope-cutting arm 104 to make it swing. The blade 105 fixed at the other end of the rope-cutting arm 104 then cuts the rope. Further swinging the lower end of the rope-cutting arm 104, the rope knot is removed from the knotting assembly 8.

[0024] For details, please refer to Figure 1 , Figure 3 as well as Figure 8 The arc-shaped variable diameter needle 205 has a rope groove in the middle and a rope threading hole at its top. A guide device is installed inside the rope threading hole. The third stepper motor 501 drives the punching needle 9 to move with the rope to the upper limit position. The distance between the tip of the needle and the rope clamping disc 404 is small enough that the rope falls into the notch above the rope clamping disc 404. The guide device makes it easy for the rope to pass through. Figure 8 The surface shown is easy to pass through from the outside to the inside rather than from the inside to the outside. When the punch needle 9 moves upward, the rope is pulled out from the rope coil 503. The rope coil 503 is installed on the lower outer shell 504 through the rope release shaft 502.

[0025] For details, please refer to Figures 1-9 It also includes a ranging and clamping system 1, which is located on the front of the device and fixed above the drilling platform 3. The ranging and clamping system 1 includes an ultrasonic ranging module 4, a drive mechanism 5, and a first stepper motor 6. The ultrasonic ranging module 4 is installed on the front of the upper housing 201 and is electrically connected to the control board 12. The control board 12 is electrically connected to the first stepper motor 6, which is fixedly installed on the top of the upper housing 201. The drive mechanism 5 is fixedly connected to the output shaft of the first stepper motor 6. The drive mechanism 5 is used to control the advancing distance of the push rod 203. 5 includes a cam 208, a pressure plate 505 at the bottom of the push rod 203, a spring 207 sleeved on the push rod 203, an ultrasonic ranging module 4 (HC-SR04), and a lower housing 504 integrated with the drilling platform 3. The drilling platform 3 has a through hole in the middle, which cooperates with the pressure plate 505 to allow the drilling needle 9 to pass through. The drilling platform 3 and the pressure plate 505 together limit the thickness of the placed material. The material to be bound is placed on the drilling platform 3. At this time, because the rope clamping disc 404 clamps the rope, the material will push the rope reel 503 to pull the rope. After placing the material to be bound, press... Pressing the start button causes the control indicator light on control board 12 to illuminate red, indicating that it is working. HC-SR04 measures the distance between the material and the upper limit position of the pressure plate 505, and transmits the signal to control board 12. The difference between the distance between the upper limit position of the pressure plate 505 and the drilling platform 3 and the measured distance is considered the material thickness. Control board 12 then outputs a signal to control the first stepper motor 6 to rotate by a calculated angle, causing the drive mechanism 5 to drive the cam 208 to rotate by a certain angle, further pushing the push rod 203 downward from the upper limit position to the distance between the upper limit position and the material thickness. This process presses the material down, improving the quality of the punching. After the above process is completed, the third stepper motor 501 drives the punching needle 9 to move to the lower limit position with the rope. The control board 12 controls the indicator light to turn green, indicating that the binding is complete and the material can be removed. At the same time, the HC-SR04 ultrasonic ranging module 4 detects in real time whether the distance between the material below and the upper limit position of the pressure plate 505 is equal to the distance between the upper limit position of the pressure plate 505 and the punching platform 3. If the error is small enough to be considered equal, it means that the material has been removed, the indicator light goes out, and it waits for the next start to complete a complete operation.

[0026] In summary, this invention precisely controls the rotation of the third stepper motor 501 via the control board 12, thereby achieving precise reciprocating movement of the arc-shaped variable-diameter needle 205 along the axis of the through hole of the punching platform 3. This ensures accurate positioning and consistent depth for each punching operation, resulting in a stable and reliable punching effect. Simultaneously, the drive gear 11 in the knotting assembly 8 is connected to the second stepper motor 206 via the second transmission shaft 210. Driven by the second stepper motor 206, the drive gear 11 rotates, moving through the first sector rack 301 and the second sector rack 302... The third sector rack 303 drives the rope clamping mechanism 101 and the knotting mechanism 102 to perform operations such as clamping and knotting the rope. The arc block 304 drives the rope release mechanism 103 at the appropriate time to release the knot and complete the binding by pulling the rope. This binding method is easier to open manually than fastened staples. It can easily adjust the mis-fixed pages of the book or remove and add pages. After binding, it can be opened 180°. The rope is soft and can provide a more comfortable writing and reading experience.

[0027] The present invention has been described above by way of example with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution of the present invention to other occasions without modification, are all within the protection scope of the present invention.

Claims

1. A drawstring binding device, comprising a fixing frame and a distance measuring and pressing system (1), wherein a punching platform (3) is fixed on the fixing frame, the distance measuring and pressing system (1) is used to detect the material thickness and press the material, the distance measuring and pressing system (1) includes a pressure plate (505), the material is placed between the pressure plate (505) and the punching platform (3), characterized in that, Also includes: The punching assembly (7) includes a punching needle (9), a first drive shaft (202), and a third stepper motor (501). The punching needle (9) includes a base (204) and an arc-shaped variable diameter needle head (205). The arc-shaped variable diameter needle head (205) includes a needle tip and a needle shank. The diameter of the arc-shaped variable diameter needle head (205) gradually increases from the needle tip to the needle shank. The needle shank of the arc-shaped variable diameter needle head (205) is fixedly connected to one end of the base (204), and the other end of the base (204) is fixedly connected to the middle of the first drive shaft (202). Both ends of the first drive shaft (202) are rotatably connected to a fixed frame. One end of the first drive shaft (202) is connected to the output shaft of the third stepper motor (501). The third stepper motor (501) is fixedly connected to the fixing frame. The drilling platform (3) has a through hole. The arc-shaped variable diameter needle (205) is set in correspondence with the through hole. The third stepper motor (501) drives the base (204) to rotate along the axis of the through hole with the end of the base (204) close to the first drive shaft (202) as the center and the length of the base (204) as the radius. This drives the tip of the arc-shaped variable diameter needle (205) to move back and forth along the axis of the through hole to perform a drilling operation through the material. The knotting assembly (8) includes a drive gear (11), a rope clamping mechanism (101), a knotting mechanism (102), a rope unwinding mechanism (103), and a second stepper motor (206). The drive gear (11) is connected to the second stepper motor (206). The inner ring of the drive gear (11) is provided with a first sector rack (301) and a second sector rack (302), the outer ring is fixed with a third sector rack (303), and the innermost ring is provided with an arc block (304). The rope clamping mechanism (101) has a worm gear (403) that meshes with the first sector rack (301) and the second sector rack (302). The first sector rack (301) and the second sector rack (302) are spaced apart along the inner ring. The knotting mechanism (102) has a second bevel gear (107) that meshes with the third sector rack (303). The arc-shaped block (304) protrudes outward from the center, and the rope-removing mechanism (103) has a contact rod. When the arc-shaped block (304) rotates to the end of the contact rod that is close to the drive gear plate (11), the arc-shaped block (304) pushes the end of the contact rod so that the rope-removing mechanism (103) completes the rope-removing action.

2. The binding device for drawstring tying according to claim 1, characterized in that, The rope clamping mechanism (101) includes a rope clamping disc (404), a rope clamping adjuster (405), and a turbine (402). The rope clamping disc (404) is mounted on a fixed frame via bearings. The rope clamping disc (404) and the turbine (402) are coaxially fixed. The turbine (402) meshes with one end of a worm gear (403). The other end of the worm gear (403) is fixed with a first bevel gear (401). The first bevel gear (401) cooperates with a first sector rack (301) and a second sector rack (302). The rope clamping disc (404) has several slots inside. The rope clamping adjuster (405) has several plates that can be inserted into the slots. The rope clamping disc (404) controls the clamping force by adjusting the distance between the slots and the plates.

3. The binding device for drawstring tying according to claim 1, characterized in that, The knotting mechanism (102) includes a knotting nozzle (108) and a knotting nozzle upper jaw (109). The third sector rack (303) cooperates with the second bevel gear (107). The second bevel gear (107) extends downward with a gear shaft. The gear shaft is fixedly connected to the top of the knotting nozzle (108). The bottom of the knotting nozzle (108) is provided with an eagle beak structure and is hinged to the knotting nozzle upper jaw (109) by a torsion spring.

4. The binding device for drawstring tying according to claim 3, characterized in that, The upper jaw (109) of the knotted beak is equipped with a pulley (111) at its tail end, and a frame sleeve (110) is fitted on the gear shaft. The pulley (111) slides along the arc-shaped edge at the bottom of the frame sleeve (110) to control the opening and closing of the beak.

5. The binding device for drawstring tying according to claim 1, characterized in that, The rope-removing mechanism (103) includes a rope-cutting arm (104). One end of the rope-cutting arm (104) is provided with a contact rod that cooperates with the arc-shaped block (304). The contact rod is slidably abutted against the periphery of the drive gear plate (11). The other end of the rope-cutting arm (104) is provided with a blade (105). The arc-shaped block (304) is used to drive the rope-cutting arm (104) to swing, thereby driving the blade (105) to cut the binding rope and remove the knot.

6. The binding device for drawstring tying according to claim 1, characterized in that, The arc-shaped variable diameter needle (205) has a rope groove in the middle and a rope hole at the top.

7. A binding device for drawstring tying according to claim 6, characterized in that, A guide device is installed inside the rope threading hole.

8. The binding device for drawstring tying according to claim 1, characterized in that, The ranging and pressing system (1) is located on the front of the device and fixed above the drilling platform (3). The ranging and pressing system (1) includes an ultrasonic ranging module (4), a cam (208) drive mechanism (5) and a first stepper motor (6). The ultrasonic ranging module (4) is installed on the front of the fixed frame. The first stepper motor (6) is fixedly installed on the top of the fixed frame. The cam (208) drive mechanism (5) is fixedly connected to the output shaft of the first stepper motor (6). The cam (208) drive mechanism (5) is used to control the advancing distance of the push rod (203). The bottom end of the push rod (203) is provided with a pressure plate (505).

9. A binding device for drawstring tying according to claim 8, characterized in that, The push rod (203) is fitted with a spring (207).

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