A knot-tying device

Abstract

The present invention relates to an auxiliary knotting device, comprising a base, a slide, a positioning mechanism, and a rope threading mechanism. The slide is slidably arranged on the base, and the slide is driven to move by a displacement driving assembly. The positioning mechanism and the rope threading mechanism are arranged on the slide; the positioning mechanism comprises a positioning and pulling assembly, and the positioning and pulling assembly comprises a positioning pressure rod, a pulling rod, and a pulling driving assembly. A connecting rod is connected between the positioning pressure rods, and a pulling rod is arranged on one side of the connecting rod; the rope threading mechanism comprises a clamping assembly, a slide rail seat, and a flip driving assembly. A clamping assembly is arranged at one end of the flip driving assembly, and the flip driving assembly drives the clamping assembly to clamp and flip while moving horizontally, so that the bag mouth end surrounds the two positioning pressure rods and passes from bottom to top between the two positioning pressure rods to form a loop. When the slide moves, the pulling rod stretches the ring part of the loop, so that the loop shrinks and forms a slipknot, thereby realizing automatic knotting processing of the bag mouth end. The steps are simple and efficient, and the slipknot phenomenon is not easy to occur.

Description

Technical Field

[0001] The invention belongs to the technical field of auxiliary striking devices, and in particular relates to an auxiliary knotting device used for packaging bags. Background Art

[0002] After the on-site packaging bags are packed, the bag mouths need to be knotted. Currently, knotting is done manually by tying a slipknot. The slipknot is easy to tie and easy to untie, and is widely used. However, manual knotting has the problems of high labor intensity and low efficiency. The prior art has equipment or tools for assisting knotting or tying, which can help users complete knotting tasks faster and more accurately, and improve work efficiency. There are many types of auxiliary knotting devices, and the most common ones are knotting machines, knotting pliers, etc. Knotting pliers are a handheld tool that users can manually operate to complete knotting. An auxiliary knotting machine is a mechanical device that can automatically complete the knotting action. The user only needs to put the items to be tied into the machine and press a button to complete the knot. The use of auxiliary knotting devices can be widely used in various fields, especially in industries that require a large number of knotting operations, such as gardening, agriculture, and packaging industries. It can improve work efficiency and reduce labor costs, while also ensuring the quality and stability of knotting.

[0003] Patent No.: CN202010794614.7, discloses a rope and slipknot knotting device, including a knotting mechanism and a rope winding device, the knotting mechanism includes a first surrounding body for winding a first ring; a second surrounding body for winding a second ring, a folding device for folding the first ring relative to the second ring, including a turning table and a folding power device for swinging the turning table, and the second surrounding body is installed on the turning table; the rope winding device includes a rope-dispensing tube, a telescopic loose clamp that stretches and contracts along the Z-axis, and a translation manipulator that moves along the X-axis and Y-axis, the loose clamp and the rope-dispensing tube are installed on the translation manipulator, and the first surrounding body and the second surrounding body are located within the travel range of the translation manipulator. The structure of the knotting mechanism in this application is relatively complex, and multiple steps need to be performed in sequence when tying a knot, which is prone to slip knot phenomenon, and requires the cooperation of multiple driving devices, and the manufacturing cost is high. Summary of the Invention

[0004] In view of the above problems, the present invention discloses an auxiliary knotting device, which can realize automatic knotting processing, has a compact overall structure and low manufacturing cost.

[0005] The specific technical solutions are as follows:

[0006] An auxiliary knotting device includes a base, a slide, a positioning mechanism, and a rope threading mechanism. The slide is arranged on the base for horizontal sliding movement via a guide rail, and the slide is driven to move by a displacement driving assembly installed on the base. The positioning mechanism and the rope threading mechanism are respectively arranged at both ends of the slide; the positioning mechanism includes a positioning platform, a flipping assembly, and a positioning and pulling assembly. The positioning platform is provided with two left and right distributed placement platforms at one end close to the rope threading mechanism, and the two placement platforms are used to place the bag opening end horizontally; the flipping assembly is arranged on the other end of the positioning platform, and the flipping assembly includes a flipping plate hingedly arranged at one end of the positioning platform and a flipping motor that drives the flipping plate to rotate along the hinge axis; the positioning and pulling assembly is arranged on the flipping plate, and the positioning and pulling assembly includes a plurality of positioning and pulling components. The cam is secured to the upper and lower ends of the cams and is secured to the bottom of the cams by means of a pull rod, and the cams are secured to the upper and lower ends of the cams by means of a pull rod.

[0007] A limiting seat is further provided on one side of the slide on the base, and a limiting groove for passing the bag opening is opened on the limiting seat, so that the limiting seat limits the packaging bag body;

[0008] The cam is fixedly mounted on the sliding platform, and the sliding platform is fixedly mounted on the sliding platform, and the cam is fixedly mounted on the sliding platform, wherein the cam is fixedly mounted on the sliding platform, and the cam is fixedly mounted on the sliding platform.

[0009] Furthermore, the height of the top of the two placing platforms is higher than the height of the top of the positioning platform, and one of the placing platforms close to the limit seat is suspended, and one end of the suspended placing platform is fixedly connected to the positioning platform, so that the bottom of the suspended placing platform is used to clamp the component to pass through.

[0010] Furthermore, the surfaces of the two positioning rods on the side away from each other are both arranged with arc structures, and the ends of the two positioning rods close to the rope threading mechanism are both arranged to be bent inwardly in an arc shape.

[0011] Furthermore, the pulling drive assembly includes a pulling motor and a first screw rod, the output end of the pulling motor is horizontally connected to the first screw rod, one end of the first screw rod horizontally passes through the connecting rod and the pulling rod, and one end of the pulling rod is a hollow structure, and an internal thread that cooperates with the first screw rod is provided on the inner wall of the pulling rod, so that when the pulling motor drives the first screw rod to rotate, the first screw rod cooperates with the internal thread of the pulling rod, thereby driving the positioning pressure rod and the pulling rod to translate along the direction of the guide cylinder.

[0012] Furthermore, the flip driving assembly includes a transverse movement seat, a rotating motor, and a rotating disk. The transverse movement seat is arranged to slide laterally on the slide rail seat, and the rotating disk and the rotating motor are respectively arranged on both side surfaces of the transverse movement seat. The rotating disk is rotatably connected to the transverse movement seat, and the output shaft of the rotating motor passes through the center of the rotating disk and is connected to the driving gear. A guide rod and a rotating shaft are horizontally arranged on one side of the rotating disk surface, one end of the guide rod is fixedly connected to the rotating disk, one end of the rotating shaft is rotatably connected to the rotating disk surface through a bearing, and a driven gear is arranged on one end of the rotating shaft, and the driven gear is meshed with the driving gear to realize that the rotating motor drives the rotating shaft to rotate, and the other end of the rotating shaft is fixedly connected to the second screw rod, and the rotating shaft is connected to the second screw rod The cam is connected to the second guide rod by the second stop member, and the cam is connected to the first guide rod by the second stop member.

[0013] Furthermore, a shaft sleeve is provided at the center of the rotating disk, and the shaft sleeve is rotatably connected to the transverse seat. The inner side of the shaft sleeve is rotatably connected to the output shaft of the rotating motor through a bearing, and the rotational resistance between the shaft sleeve and the output shaft of the rotating motor is smaller than the rotational resistance between the shaft sleeve and the transverse seat.

[0014] Furthermore, the first clamping block and the second clamping block are both hook-shaped structures, and both ends of the first clamping block and the second clamping block are provided with a handle and a clamping part, the handles of the first clamping block and the second clamping block are respectively connected to the guide rod and the second screw rod, and the clamping part of the first clamping block is provided with a clamping groove on the side close to the second clamping block, and the clamping part of the second clamping block is provided with a clamping block matching the clamping groove on the side close to the first clamping block, and the bag opening end is clamped and fixed by the cooperation of the first clamping block and the second clamping block. When the transverse moving seat moves to one end under the drive of the displacement driving assembly, the rotating motor drives the rotating disk to rotate, so that the hook-shaped clamping assembly drives the bag opening end to surround the two positioning pressure rods through the clamping part and move between the two positioning pressure rods, so that the bag opening end is embedded in the hook groove at the bottom of the pulling rod.

[0015] Furthermore, both ends of the slide rail seat are provided with limiting plates for limiting the transverse seat.

[0016] Furthermore, the displacement drive assembly includes a displacement motor, a third screw rod, and a rotating seat. The displacement motor and the rotating seat are respectively arranged on both sides of the base. The output end of the displacement motor is set at one end of the third screw rod, and the other end of the third screw rod is rotatably set on the rotating seat. The third screw rod passes through the two limit plates horizontally and is threadedly connected to the transverse seat. When one side of the transverse seat is limited by the limit plate, the displacement motor drives the slide to move to the side away from the limit seat through the third screw rod.

[0017] The beneficial effects of the present invention are embodied in:

[0018] The present invention has a compact structure and low manufacturing cost. The bag mouth end is driven to form a loop by the clamping component, and then one end of the loop is hooked out from the center of the loop by the pulling rod to form a ring portion. At the same time, the other end of the loop is stretched by moving the slide, so that the loop shrinks to form a slipknot, thereby realizing automatic knotting processing of the bag mouth end. The steps are simple and efficient, and the slip knot phenomenon is not easy to occur. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention.

[0020] Figure 2 It is a top view of the present invention.

[0021] Figure 3 It is a structural schematic diagram of the positioning platform in the present invention.

[0022] Figure 4 It is a front cross-sectional view of the flip drive assembly in the present invention.

[0023] Figure 5 It is a side sectional view of the flip drive assembly in the present invention.

[0024] Figure 6 It is a structural schematic diagram of the clamping assembly in the present invention.

[0025] Figure 7 Schematic diagram of the structure of the clamping assembly in the initial state of the present invention.

[0026] Figure 8 This is a schematic diagram of the structure of the clamping assembly when flipping in the present invention.

[0027] Figure 9 This is a schematic diagram of the structure of the clamping assembly after flipping in the present invention.

[0028] Figure 10 This is a schematic diagram of the structure of the bag after the auxiliary knotting device of the present invention has tied a knot at the bag opening.

[0029] Base 1, limiting seat 11, limiting slot 111, guide rail 12, displacement motor 13, third screw rod 14, rotating seat 15;

[0030] Slide 2;

[0031] Positioning platform 3, flip plate 31, hinge shaft 311, flip motor 32, positioning pressure rod 33, accommodating groove 331, guide cylinder 34, connecting rod 35, pulling rod 36, hook groove 361, pulling motor 37, first screw rod 38, placement platform 39;

[0032] Slide rail base 41, limiting plate 411, transverse movement base 42, rotating motor 43, driving gear 431, rotating disk 44, shaft sleeve 441, rotating shaft 45, driven gear 451, second screw rod 452, limiting ring 453, guide rod 46;

[0033] Clamping assembly 5, first clamping block 51, second clamping block 52, handle 53, clamping portion 54, clamping groove 541, clamping block 542;

[0034] The packaging bag body 6 , the bag opening 61 , the ring sleeve 62 , and the ring portion 63 . DETAILED DESCRIPTION

[0035] To make the technical solution of the present invention more clear and specific, the present invention is further described below with reference to the accompanying drawings. Any equivalent replacement of the technical features of the technical solution of the present invention and any solution derived from conventional reasoning shall fall within the scope of protection of the present invention. The fixed connection and fixed setting mentioned in the present invention are all common connection methods in the mechanical field, including welding, bolt and nut connection, and screw connection.

[0036] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0037] An auxiliary knotting device includes a base 1, a slide 2, a positioning mechanism, and a rope threading mechanism. The slide 2 is set on the base 1 for horizontal sliding through a guide rail 12. The slide 2 is driven and displaced by a displacement drive component installed on the base 1. A positioning mechanism and a rope threading mechanism are respectively set at both ends of the slide 2; the positioning mechanism includes a positioning platform 3, a flip component, and a positioning and pulling component. The positioning platform 3 is provided with two left and right distributed placement platforms 39 at one end near the rope threading mechanism. The two placement platforms 39 are used to place the bag opening 61 of the packaging bag horizontally. The top of the two placement platforms 39 The height of the part is higher than the height of the top of the positioning platform 3, and a placement platform 39 close to the limit seat 11 is suspended. One end of the suspended placement platform 39 is fixedly connected to the positioning platform 3, so that the bottom of the suspended placement platform 39 is used to clamp the component 5 to drive the bag end 61 to pass through; a flip component is set on the other end of the positioning platform 3, and the flip component includes a flip plate 31 hingedly set at one end of the positioning platform 3 through a hinge shaft 311 and a flip motor 32 that drives the flip plate 31 to rotate along the hinge shaft 311, and a positioning pulling component is set on the flip plate 31.

[0038] The positioning and pulling assembly includes a positioning pressure rod 33, a guide cylinder 34, a pulling rod 36 and a pulling drive assembly. There are two guide cylinders and they are fixed on both sides of the upper surface of the flip plate 31. The guide cylinders 34 are arranged along the two end directions of the slide 2. One end of a positioning pressure rod 33 is slidably set in the two guide cylinders 34. The bottom of the other end of the two positioning pressure rods 33 is placed on the two placement platforms 39 respectively and the bag mouth end 61 is pressed and positioned. The bottom of the two positioning pressure rods 33 is provided with a accommodating groove 331 for accommodating the bag mouth end 61. The two positioning pressure rods 33 are both arranged with an arc structure on the surface away from each other, and the two positioning pressure rods 33 are both arranged with an inward arc bending at one end close to the rope threading mechanism, so that when stretched, the ring sleeve 62 can shrink and fall off from the two positioning pressure rods 33. The two positioning rods 33 are laterally connected with a connecting rod 35, and the pulling rod 36 is horizontally arranged on the surface of one side of the connecting rod 35 close to the rope threading mechanism. A hook groove 361 is provided at the end of the bottom of the pulling rod 36 close to the rope threading mechanism. The hook groove 361 and the two accommodating grooves 331 are not in a straight line, and the hook groove 361 is located at the end closer to the rope threading mechanism, so that when the positioning rod 33 is retracted into the guide cylinder 34, the position of the hook groove 361 can correspond to the position of the clamping assembly 5, so that the ring portion 63 of the ring sleeve 62 is embedded in the hook groove 361, and the bottom of the pulling rod 36 is slightly higher than the bottom of the positioning rod 33 to avoid pulling the lower half of the ring sleeve 62 when the pulling rod 36 is displaced. The connecting rod 35 is driven to move by the pulling drive assembly installed on the positioning platform 3, so that the positioning rod 33 and the pulling rod The rod 36 is longitudinally displaced along the guide cylinder 34 through the connecting rod 35; the pulling drive assembly includes a pulling motor 37 and a first screw rod 38, the output end of the pulling motor 37 is horizontally connected to the first screw rod 38, one end of the first screw rod 38 horizontally passes through the connecting rod 35 and the pulling rod 36, and one end of the pulling rod 36 is a hollow structure, and an internal thread that cooperates with the first screw rod 38 is provided on the inner wall of the pulling rod 36, so that when the pulling motor 37 drives the first screw rod 38 to rotate, the first screw rod 38 cooperates with the internal thread of the pulling rod 36, thereby driving the positioning pressure rod 33 and the pulling rod 36 to translate along the direction of the guide cylinder 34, and the positioning pressure rod 33 can drive the bag mouth end 61 to move through the accommodating groove 331 when displacing, and when the positioning pressure rod 33 retracts, the bag mouth end 61 can slide onto the positioning platform 3. And during the rope threading process, the pulling motor 37 needs to drive the two positioning pressure rods 33 to extend to the front end first and then retract backward through the first screw rod 38, so that the positioning pressure rods 33 drive the bag mouth end 61 to move forward and then move backward to ensure that the bag mouth end 61 can be inserted downward from its rear end and then inserted upward from its front end when threading the rope.

[0039] A limiting seat 11 is also provided on the base 1 on one side of the slide 2. The limiting seat 11 is provided with a limiting groove 111 for passing the bag opening end 61. The position of the limiting groove 111 corresponds to the position of the two accommodating grooves 331, and the limiting seat 11 limits the packaging bag body 6 to prevent the packaging bag body from moving together when the slide is displaced.

[0040] The rope threading mechanism is arranged at one end of the positioning mechanism and is driven to move laterally by the displacement driving component. The rope threading mechanism includes a clamping component 5, a slide rail seat 41, and a flip driving component. The slide rail seat 41 is fixedly arranged on the slide 2. The flip driving component is arranged to slide laterally on the slide rail seat 41. The flip driving component is driven to move laterally by the displacement driving component. The clamping component 5 is arranged at one end of the flip driving component close to the positioning mechanism. The position of the clamping component 5 corresponds to the position of the accommodating groove 331 of the two positioning pressure rods 33 and clamps one end of the bag end 61 The bag is held fixed, and when the flip driving assembly drives the clamping assembly 5 to clamp and flip clockwise while moving horizontally, the bag end 61 surrounds the two positioning pressure rods 33 from top to bottom and passes through between the two positioning pressure rods 33 from bottom to top to form a ring sleeve 62, and the ring portion 63 of the ring sleeve 62 is embedded in the hook groove 361 at the bottom of the pulling rod 36. By using the displacement driving assembly to drive the slide 2 to move toward the end away from the limit seat 11, the pulling rod 36 stretches the ring portion 63 of the ring sleeve 62, so that the ring sleeve 62 contracts and forms the following Figure 10 Slipknot shown.

[0041] like Figure 4-6The cam 42 is provided with a plurality of guide wheels 44a and 45b, and the guide wheels 44b are provided with a plurality of guide wheels 45c, 45d, 45e and 45e, and the guide wheels 42a and 45b are provided with a plurality of guide wheels 44b, 45e and 45e, respectively. When the second screw rod 452 is rotated, the first clamping block 51 is displaced on the guide rod 46, and the second screw rod 452 is rotated by the second clamping block 51.

[0042] A shaft sleeve 441 is provided at the center of the rotating disk 44, and the shaft sleeve 441 is rotatably connected to the transverse shift seat 42. The inner side of the shaft sleeve 441 is rotatably connected to the output shaft of the rotating motor 43 through a bearing, and the rotational resistance between the shaft sleeve 441 and the output shaft of the rotating motor 43 is smaller than the rotational resistance between the shaft sleeve 441 and the transverse shift seat 42, so that the output shaft of the rotating motor 43 can preferentially drive the rotating shaft 45 to rotate through gear cooperation when rotating.

[0043] The first clamping block 51 and the second clamping block 52 are both hook-shaped structures, and both ends of the first clamping block 51 and the second clamping block 52 are provided with a handle 53 and a clamping portion 54. The handles 53 of the first clamping block 51 and the second clamping block 52 are connected to the guide rod 46 and the second screw rod 452 respectively. The clamping portion 54 of the first clamping block 51 is provided with a clamping groove 541 on the side close to the second clamping block 52. The position of the clamping groove 541 is on the same straight line as the position of the limiting groove 111. The clamping portion 54 of the second clamping block 52 is provided with a clamping groove 541 on the side close to the first clamping block 51. The clamping block 542 that matches the groove 541 rotates through the second screw rod 452, so that the first clamping block 51 is displaced and cooperates with the second clamp to clamp and fix the bag mouth end 61. When the transverse displacement seat 42 is displaced to one end under the drive of the displacement driving component, the rotating motor 43 drives the rotating disk 44 to rotate, so that the hook-shaped clamping component 5 drives the bag mouth end 61 through the clamping part 54 to surround the two positioning pressure rods 33 and move between the two positioning pressure rods 33, so that the bag mouth end 61 is embedded in the hook groove 361 at the bottom of the pulling rod 36.

[0044] The displacement drive assembly includes a displacement motor 13, a third screw rod 14, and a rotating seat 15. The displacement motor 13 and the rotating seat 15 are respectively arranged on both sides of the base 1. The output end of the displacement motor 13 is provided with one end of the third screw rod 14, and the other end of the third screw rod 14 is rotatably set on the rotating seat 15. The third screw rod 14 transversely passes through the two limit plates 411 and is threadedly connected to the transverse seat 42. The friction resistance between the slide 2 and the guide rail 12 is greater than the friction resistance between the transverse seat 42 and the slide rail seat 41, so that when the third screw rod 14 rotates, it preferentially drives the transverse seat 42 to move. Therefore, when one side of the transverse seat 42 is limited by the limit plate 411, the displacement motor 13 drives the slide 2 to move to the side away from the limit seat 11 through the third screw rod 14.

[0045] The working principle of the present invention is as follows: when tying the bag mouth end 61 of the packaging bag, the bag mouth end 61 of the packaging bag is first shrunk into a thin strip, and then the bag mouth end 61 is placed on two placement platforms 39, and at the same time, the two ends of the bag mouth end 61 are respectively clamped into the limiting groove 111 of the limiting seat 11 and the clamping groove 541 of the clamping assembly 5, and then the auxiliary knotting device is started, and the flip motor 32 drives the flip plate 31 to descend, so that the two positioning pressure rods 33 are pressed on the bag mouth end 61, and at the same time, the rotating motor 43 drives the rotating shaft 45 to rotate through the gear cooperation, and the first clamping block 51 is displaced and cooperates with the second clamping block 52 to clamp the bag mouth end 61. After clamping and fixing, as shown in FIG. Figure 7-9As shown, the rotating motor 43 starts to drive the rotating disk 44 and the clamping assembly 5 to rotate. At the same time, the displacement motor 13 drives the third screw rod 14 to rotate, so that the transverse seat 42 moves toward the limit seat 11 until it reaches the position of the limit plate 411 and stops. The clamping assembly 5 drives the bag end 61 to surround the two positioning pressure rods 33 from top to bottom and pass through from bottom to top between the two positioning pressure rods 33 to form a ring sleeve 62. In this process, the pulling motor 37 drives the two positioning pressure rods 33 through the first screw rod 38 to first extend to the front end and then retract backward, so that the positioning pressure rod 33 drives the bag end 61 to move forward and then backward to ensure that one end of the bag end 61 can pass downward from the rear end of the ring sleeve 62 and then pass upward from the front end of the ring sleeve 62, so that the bag end 61 clamped by the clamping assembly 5 is located at the front end of the ring sleeve 62. At this time, the bag end 61 clamped by the clamping assembly 5 The bag mouth end 61 is embedded in the hook groove 361 at the bottom of the pulling rod 36. Due to the height difference between the placement platform 39 and the positioning platform 3, the positioning pressure rod 33 can drive the lower half of the ring sleeve 62 to slide onto the positioning platform 3 when it is retracted, thereby preventing the pulling rod 36 from hooking the lower half of the ring sleeve 62 when pulling; then the pulling motor 37 drives the pulling rod 36 to move backward, so that the bag mouth end 61 clamped by the clamping assembly 5 extends into the ring sleeve 62 to form a ring portion 63. At this time, the slide 2 starts to move under the drive of the displacement motor 13, so that the ring sleeve 62 starts to shrink. During the shrinkage process, the ring sleeve 62 disengages from the two positioning pressure rods 33, and finally the ring sleeve 62 shrinks to form a slipknot. Then the displacement motor 13 and the rotation motor 43 reverse, so that the clamping assembly 5 loosens one end of the slipknot and returns to the initial position, and finally the slipknot is taken out to complete the automatic knotting process of the bag.

[0046] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An auxiliary knotting device, characterized in that: The invention comprises a base (1), a slide (2), a positioning mechanism, and a rope threading mechanism. The slide (2) is arranged on the base (1) for horizontal sliding by a guide rail (12). The slide (2) is driven to move by a displacement driving assembly installed on the base (1). The positioning mechanism and the rope threading mechanism are respectively arranged at two ends of the slide (2); the positioning mechanism comprises a positioning platform (3), a flip assembly, and a positioning pulling assembly. The positioning platform (3) is provided with two left and right distributed placement platforms (39) at one end close to the rope threading mechanism. The two placement platforms (39) are used for horizontal movement. The bag opening end (61) is placed toward the bag opening; the flip assembly is arranged on the other end of the positioning platform (3), and the flip assembly includes a flip plate (31) hingedly arranged at one end of the positioning platform (3) and a flip motor (32) driving the flip plate (31) to rotate along the hinge axis (311); the positioning pulling assembly is arranged on the flip plate (31), and the positioning pulling assembly includes a positioning pressure rod (33), a guide cylinder (34), a pulling rod (36) and a pulling drive assembly, and the guide cylinders (34) are two in number and are fixedly arranged on the flip plate (31). On both sides of the upper surface, one end of a positioning pressure rod (33) is slidably set in the two guide cylinders (34), and the bottoms of the other ends of the two positioning pressure rods (33) are respectively placed on the two placement platforms (39) and press the bag end (61) to position, and the bottoms of the two positioning pressure rods (33) are provided with a receiving groove (331) for receiving the bag end (61), and a connecting rod (35) is horizontally connected between the two positioning pressure rods (33). The pulling rod (36) is horizontally set on the surface of one side of the connecting rod (35) close to the rope threading mechanism. The pulling rod (36) ) A hook groove (361) is provided at one end of the bottom near the rope threading mechanism, and the connecting rod (35) is driven to move by a pulling drive assembly installed on the positioning platform (3), so that the positioning pressure rod (33) and the pulling rod (36) are longitudinally displaced along the guide cylinder (34) through the connecting rod (35); a limiting seat (11) is also provided on one side of the slide (2) on the base (1), and a limiting groove (111) for threading the bag opening end (61) is opened on the limiting seat (11), so that the limiting seat (11) limits the packaging bag body (6); The rope threading mechanism is arranged at one end of the positioning mechanism and is driven to move laterally by the displacement drive assembly. The rope threading mechanism includes a clamping assembly (5), a slide rail seat (41), and a flip drive assembly. The slide rail seat (41) is fixedly arranged on the slide (2). The flip drive assembly is arranged on the slide rail seat (41) to slide laterally. The flip drive assembly is driven to move laterally by the displacement drive assembly. The clamping assembly (5) is arranged at one end of the flip drive assembly close to the positioning mechanism. The position of the clamping assembly (5) corresponds to the position of the accommodating grooves (331) of the two positioning pressure rods (33) and clamps and fixes one end of the bag opening end (61). When the flip driving assembly drives the clamping assembly (5) to clamp and flip clockwise while moving horizontally, the bag mouth end (61) surrounds the two positioning pressure rods (33) from top to bottom and passes through between the two positioning pressure rods (33) from bottom to top to form a ring (62), and the ring portion (63) of the ring (62) is embedded in the hook groove (361) at the bottom of the pulling rod (36). By using the displacement driving assembly to drive the slide (2) to move toward the end away from the limit seat (11), the pulling rod (36) stretches the ring portion (63) of the ring (62), so that the ring (62) contracts and forms a slipknot.

2. The auxiliary knotting device according to claim 1, characterized in that: The heights of the tops of the two placement platforms (39) are higher than the height of the top of the positioning platform (3), and one of the placement platforms (39) close to the limiting seat (11) is suspended, and one end of the suspended placement platform (39) is fixedly connected to the positioning platform (3), so that the bottom of the suspended placement platform (39) is used for the clamping component (5) to pass through.

3. The auxiliary knotting device according to claim 1, characterized in that: The surfaces of the two positioning pressure rods (33) on the side away from each other are both arranged in an arc surface structure, and the ends of the two positioning pressure rods (33) close to the rope threading mechanism are both arranged in an inward arc shape.

4. The auxiliary knotting device according to claim 1, characterized in that: The pulling drive assembly includes a pulling motor (37) and a first screw rod (38), the output end of the pulling motor (37) is horizontally connected to the first screw rod (38), one end of the first screw rod (38) horizontally passes through the connecting rod (35) and the pulling rod (36), and one end of the pulling rod (36) is a hollow structure. An internal thread that matches the first screw rod (38) is provided on the inner wall of the pulling rod (36), so that when the pulling motor (37) drives the first screw rod (38) to rotate, the first screw rod (38) matches the internal thread of the pulling rod (36), thereby driving the positioning pressure rod (33) and the pulling rod (36) to translate along the direction of the guide cylinder (34).

5. The auxiliary knotting device according to claim 1, characterized in that: The flip drive assembly includes a transverse shift seat (42), a rotary motor (43), and a rotary disk (44). The transverse shift seat (42) is arranged to slide laterally on the slide rail seat (41). The rotary disk (44) and the rotary motor (43) are respectively arranged on both sides of the transverse shift seat (42). The rotary disk (44) is rotatably connected to the transverse shift seat (42). The output shaft of the rotary motor (43) passes through the center of the rotary disk (44) and is connected to a driving gear (431). A guide rod (46) is horizontally arranged on one side of the surface of the rotary disk (44). ) and a rotating shaft (45), one end of the guide rod (46) is fixedly connected to the rotating disk (44), one end of the rotating shaft (45) is rotatably connected to the surface of the rotating disk (44) through a bearing, and a driven gear (451) is provided on one end of the rotating shaft (45), and the driven gear (451) is meshedly connected with the driving gear (431) to realize that the rotating motor (43) drives the rotating shaft (45) to rotate, and the other end of the rotating shaft (45) is fixedly connected to a second screw rod (452), and the connection between the rotating shaft (45) and the second screw rod (452) is A limiting ring (453) is provided at the position where the guide rod (46) and the second screw rod (452) are connected to the clamping assembly (5), and the clamping assembly (5) includes a first clamping block (51) and a second clamping block (52), wherein the first clamping block (51) is located at one end close to the rotating disk (44), the guide rod (46) and the second screw rod (452) are provided through the first clamping block (51), and the first clamping block (51) and the guide rod (46) are slidably connected, and the first clamping block (51) and the second screw rod (452) are threadedly connected. The second clamping block (52) is fixedly connected to the guide rod (46), and the second clamping block (52) is rotatably connected to the second screw rod (452) via a bearing, so that when the rotary motor (43) drives the second screw rod (452) to rotate, the first clamping block (51) is driven to move on the guide rod (46), and when the displacement of the first clamping block (51) is limited by the second clamping block (52) or the limiting ring (453), the rotation of the second screw rod (452) is limited, and the rotary motor (43) drives the rotating disk (44) to rotate.

6. The auxiliary knotting device according to claim 5, characterized in that: A shaft sleeve (441) is provided at the center of the rotating disk (44), the shaft sleeve (441) is rotatably connected to the transverse seat (42), the inner side of the shaft sleeve (441) is rotatably connected to the output shaft of the rotating motor (43) via a bearing, and the rotational resistance between the shaft sleeve (441) and the output shaft of the rotating motor (43) is smaller than the rotational resistance between the shaft sleeve (441) and the transverse seat (42).

7. The auxiliary knotting device according to claim 5, characterized in that: The first clamping block (51) and the second clamping block (52) are both hook-shaped structures. Both ends of the first clamping block (51) and the second clamping block (52) are provided with a handle (53) and a clamping portion (54). The handles (53) of the first clamping block (51) and the second clamping block (52) are connected to the guide rod (46) and the second screw rod (452) respectively. The clamping portion (54) of the first clamping block (51) is provided with a clamping groove (541) on one side close to the second clamping block (52). The clamping portion (54) of the second clamping block (52) is provided with a clamping groove (541) on one side close to the first clamping block (51). The clamping block (542) matched with the groove (541) clamps and fixes the bag mouth end (61) through the cooperation of the first clamping block (51) and the second clamping block. When the transverse displacement seat (42) is displaced to one end under the drive of the displacement driving component, the rotating motor (43) drives the rotating disk (44) to rotate, so that the hook-shaped clamping component (5) drives the bag mouth end (61) through the clamping portion (54) to surround the two positioning pressure rods (33) and move to between the two positioning pressure rods (33), so that the bag mouth end (61) is embedded in the hook groove (361) of the pulling rod (36).

8. The auxiliary knotting device according to claim 5, characterized in that: Limiting plates (411) for limiting the position of the transverse seat (42) are provided at both ends of the slide rail seat (41).

9. The auxiliary knotting device according to claim 8, characterized in that: The displacement drive assembly includes a displacement motor (13), a third screw rod (14), and a rotating seat (15). The displacement motor (13) and the rotating seat (15) are respectively arranged on both sides of the base (1). The output end of the displacement motor (13) is arranged on one end of the third screw rod (14), and the other end of the third screw rod (14) is rotatably arranged on the rotating seat (15). The third screw rod (14) horizontally penetrates two limit plates (411) and is threadedly connected to the transverse seat (42). When one side of the transverse seat (42) is limited by the limit plate (411), the displacement motor (13) drives the slide (2) to move toward the side away from the limit seat (11) through the third screw rod (14).

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