Bag opening wrapping and tying mechanism and ton bag tying machine

Abstract

A bag opening wrapping and tying mechanism and a ton bag tying machine belong to the field of packaging machinery, and comprise a mounting seat, a circular turntable assembly is arranged in a circular notch of the mounting seat, a turntable opening which extends outwards from the circle center and can accommodate a folded bag opening is formed in the turntable assembly, and a film roll mandrel assembly is arranged on the edge of the upper end of the turntable assembly. The film roll mandrel assembly is used for installing and fixing a film roll and can form rotating resistance when a film is pulled out, a driving mechanism is arranged at the lower end of the installation base and drives the rotating disc assembly and the film roll to horizontally rotate around the center of the rotating disc assembly, and a pneumatic clamping jaw capable of horizontally stretching out and drawing back and vertically swinging is arranged on the side face of a round notch of the installation base. When the pneumatic clamping jaw swings to the lower position, the pneumatic clamping jaw can stretch out forwards to clamp the film and retract to pull the film apart, and when the pneumatic clamping jaw swings to the upper position, the pulled-apart film is in the initial state of film winding and tying. The bag mouth wrapping and tying device achieves bag mouth wrapping and tying, is simple in overall structure and low in consumable cost, and can adapt to the severe packaging working environment.

Description

TECHNICAL FIELD

[0001] The present application relates to a bag mouth film wrapping and sealing mechanism and a ton bag sealing machine, belonging to the field of packaging machinery. BACKGROUND

[0002] In the field of automatic packaging of powder particles, especially in ton bag packaging, two sealing forms are mainly used: one is heat sealing, which needs to blow the dust in the bag mouth before sealing in order to achieve sealing effect, which makes the structure complex and reduces the overall packaging efficiency, so it is usually not preferred; the other is the form of sealing tape, which uses a sealing tape gun to seal after the bag mouth is gathered, on the one hand, the cost of nylon sealing tape is high, on the other hand, the working environment is limited, and the internal precise structure of the sealing tape gun is easily affected by the long-term exposure to the dust environment, causing the problem of poor movement, sealing tape jamming and even sealing failure. SUMMARY

[0003] In order to solve the problem of poor reliability and high sealing cost caused by the limited working environment of the existing packaging sealing machine, the present application provides a bag mouth film wrapping and sealing mechanism, which comprises a mounting seat, a circular notch in the mounting seat is provided with a circular rotating disc assembly, the rotating disc assembly is provided with a rotating disc opening extending outward from the center and capable of accommodating the gathered bag mouth, a film roll core shaft assembly is arranged at the upper edge of the rotating disc assembly, the film roll core shaft assembly is used for mounting and fixing the film roll and can form a rotating resistance when the film is pulled out, a driving mechanism is arranged at the lower end of the mounting seat, the driving mechanism drives the rotating disc assembly and the film roll rotating disc assembly to rotate horizontally, a side of the circular notch of the mounting seat is provided with a pneumatic clamp jaw capable of horizontal extension and up-down swinging, when the pneumatic clamp jaw swings to the lower position, it can extend forward to clamp and break the film, when the pneumatic clamp jaw swings to the upper position, the broken film is in the initial state of film wrapping and sealing.

[0004] The rear end of the pneumatic clamp jaw is connected with the cylinder rod of the telescopic cylinder, the cylinder body of the telescopic cylinder is connected with one end of the swing arm, the other end of the swing arm is hinged to the cylinder rod of the swing cylinder, the middle part of the swing arm is hinged to one side of the lower end of the mounting seat, the cylinder body of the swing cylinder is hinged to the lower end of the mounting seat, the telescopic cylinder can drive the pneumatic clamp jaw to extend and break the clamped film, and the swing cylinder can drive the swing arm to swing up and down to drive the pneumatic clamp jaw and the telescopic cylinder.

[0005] A plurality of horizontally rotating guide wheels are uniformly arranged on the outer circumference of the circular notch of the mounting seat, the wheel part of the guide wheel is provided with a groove in the middle, the rotating disc assembly comprises a rotary guide disc, the outer circumference of the rotary guide disc is embedded in the groove of the guide wheel, the lower end of the rotary guide disc is provided with a rotary sprocket concentric with it, and the rotary guide disc and the rotary sprocket are provided with rotating disc openings aligned above and below and extending outward from the center.

[0006] The drive mechanism includes a motor connected to the mounting base, the motor output end of which meshes with a chain drive mechanism, and the chain drive mechanism meshes with a rotary sprocket.

[0007] The membrane roll mandrel assembly includes a rotating shaft, with a membrane roll mounted on the upper part of the rotating shaft. A membrane roll pressure plate is provided at the upper end of the rotating shaft, and a radial grooved wheel is provided at the lower part of the rotating shaft. The radial grooved wheel abuts against a transversely arranged ball plunger. The ball plunger is connected inside a first seated bearing. The lower end of the first seated bearing is connected to the upper end of the turntable assembly. A second seated bearing is also provided at the lower end of the rotating shaft and is mounted on the turntable assembly.

[0008] The rotating shaft has a code disk in the middle, and multiple sets of sensing teeth are evenly distributed along the circumference of the code disk. A proximity switch is provided on one side of the sensing teeth and is mounted on the mounting base.

[0009] The present invention also proposes a ton bag sealing machine, including a sealing frame, a bag mouth horizontal movement mechanism, a bag mouth gathering mechanism, a bag mouth rotation mechanism, and the bag mouth wrapping and sealing mechanism; the sealing frame has a longitudinally horizontally arranged bag mouth gathering mechanism in the middle of its vertical direction, a bag mouth rotation mechanism is located directly above the bag mouth gathering mechanism, a transversely horizontally arranged bag mouth horizontal movement mechanism is located above one side of the bag mouth gathering mechanism, and a bag mouth wrapping and sealing mechanism is located at the upper end of the other side of the bag mouth gathering mechanism.

[0010] The bag opening transverse movement mechanism includes a synchronous belt drive mechanism. A transfer seat is provided on the synchronous belt of the synchronous belt drive mechanism. A bag opening clamping mechanism is provided on the transfer seat. The bag opening clamping mechanism includes a support seat. The support seat is hinged to a set of swing clamping rods. The swing clamping rods are driven by a swing cylinder to realize the opening and closing action. The cylinder body of the swing cylinder is hinged to the support seat.

[0011] The bag opening gathering mechanism includes a longitudinally horizontally arranged gathering bracket. The upper end of the gathering bracket is provided with a slide rail, and the two ends of the slide rail are provided with relatively movable closing fork plates. The closing fork plates are arranged vertically and staggered. The closing fork plates are driven by a closing cylinder to realize the horizontal opening and closing movement along the slide rail. A bag opening limiting rod is provided below the closing fork plate. Both sides of the bag opening limiting rod are provided with swing limiting rods. The swing limiting rods are driven by a limiting cylinder to realize the swinging action of approaching or moving away from the bag opening limiting rod. A bag opening wrapping and sealing mechanism is provided at the upper end of one of the closing fork plates.

[0012] The bag opening rotation mechanism includes a hanger, with a vertically arranged lifting slide in the middle of the hanger. The lifting slide is driven to move vertically up and down by a lifting cylinder. A rotation drive mechanism is provided on the lifting slide. The output end of the rotation drive mechanism is provided with an openable and closable swing clamp. The rotation drive mechanism can drive the swing clamp to rotate horizontally.

[0013] The tying frame is also equipped with a lifting mechanism, and the bag opening horizontal movement mechanism, bag opening gathering mechanism and bag opening rotation mechanism are all connected to the lifting slide of the lifting mechanism.

[0014] The beneficial effects of this invention are:

[0015] A. The pneumatic gripper, swinging to the upper position, clamps the torn film as the initial state for wrapping and sealing. In conjunction with the turntable assembly, it first gathers the bag opening to the turntable opening, then drives the film roll to rotate. This allows the film on the roll to wrap around the bag opening. The film roll mandrel assembly creates rotational resistance during wrapping, tightening the film and ensuring a tight seal. The pneumatic gripper, swinging to the lower position, extends and tears the film, completing the seal. This mechanism has a simple overall structure, uses film roll sealing materials at low cost, and its wrapping method has low requirements for bag cleanliness, making it suitable for dusty working environments. It is also applicable to a wide variety of packaging materials and various bag sizes.

[0016] B. Multiple sets of sensing teeth are evenly distributed along the circumference of the code disk. The rotation of the sensing teeth on the code disk is sensed by a proximity switch. On the one hand, when the pneumatic gripper tears the film, the rotation of the code disk can be used to determine whether the pneumatic gripper has successfully gripped the film. On the other hand, the rotation of the code disk can also be used to determine whether the film roll has been used up, thus improving the reliability of the sealing mechanism.

[0017] C. The bag mouth lateral movement mechanism clamps the bag mouth into a straight line and moves it to the bag mouth gathering mechanism. The bag mouth gathering mechanism gathers the straight bag mouth to the turntable opening of the bag mouth wrapping and sealing mechanism. The bag mouth rotation mechanism rotates the gathered bag mouth into a twisted shape, and then the bag mouth wrapping and sealing mechanism wraps around the bag mouth of the ton bag, completing the sealing action of the ton bag and solving the problem of poor sealing reliability of ton bags after filling powder and granular materials.

[0018] D. The sealing frame is equipped with a lifting mechanism, which can adjust the height to adapt to the position of different bag openings, meet the sealing requirements of packaging bags of different sizes, and broaden the application range of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the bag opening wrapping and sealing mechanism of the present invention.

[0020] Figure 2 This is a schematic diagram of the bag opening wrapping and sealing mechanism of the present invention from another angle.

[0021] Figure 3 This is a structural diagram of the turntable assembly and drive mechanism.

[0022] Figure 4 This is a schematic diagram of the membrane roll mandrel assembly.

[0023] Figure 5 This is a partial cross-sectional view of the membrane roll mandrel assembly.

[0024] Figure 6This is a schematic diagram showing the state of the pneumatic gripper preparing to tear the film.

[0025] Figure 7 This is a schematic diagram of the state after the pneumatic gripper tears the film.

[0026] Figure 8 This is a structural schematic diagram of the ton bag sealing machine of the present invention.

[0027] Figure 9 This is a schematic diagram of the bag opening horizontal movement mechanism.

[0028] Figure 10 This is a schematic diagram of the bag opening closing mechanism.

[0029] Figure 11 This is a schematic diagram of the bag opening rotation mechanism.

[0030] Figure 12 This is a diagram showing the state of the ton bag opening being closed. Detailed Implementation

[0031] To make the objectives, technical solutions, and beneficial effects of the present invention clearer, the embodiments of the present invention are described in detail below with reference to the accompanying drawings. The embodiments are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0032] The purpose of this invention is to provide a bag opening wrapping and sealing mechanism, see below. Figures 1-7 It includes a mounting base 11, in which a circular turntable assembly 12 is provided within a circular notch. The turntable assembly 12 has a turntable opening extending outward from the center and capable of accommodating the bag opening after it is closed. A film roll mandrel assembly 19 is provided at the upper edge of the turntable assembly 12. The film roll mandrel assembly 19 is used to install and fix the film roll A and can generate rotational resistance when the film is pulled out. A drive mechanism 17 is provided at the lower end of the mounting base 11. The drive mechanism 17 drives the turntable assembly 12 and the film roll A to rotate horizontally around the center of the turntable assembly 12. A pneumatic gripper 13 that can extend horizontally and swing up and down is provided on the side of the circular notch of the mounting base 11. When the pneumatic gripper 13 swings to the lower position, it can extend forward and clamp the film and retract to tear the film. When the pneumatic gripper 13 swings to the upper position, the torn film is in the initial state of wrapping and tying. The film roll A is preferably a film with electrostatic adsorption capability.

[0033] Furthermore, the rear end of the pneumatic gripper 13 is connected to the cylinder rod of the telescopic cylinder 15, the cylinder body of the telescopic cylinder 15 is connected to one end of the swing arm 16, the other end of the swing arm 16 is hinged to the cylinder rod of the swing cylinder 14, the middle part of the swing arm 16 is hinged to one side of the lower end of the mounting base 11, and the cylinder body of the swing cylinder 14 is hinged to the lower end of the mounting base 11. The telescopic cylinder 15 can drive the pneumatic gripper 13 to extend and retract and tear the clamped film, and the swing cylinder 14 can drive the swing arm 16 to realize the up and down swing of the pneumatic gripper 13 and the telescopic cylinder 15.

[0034] Furthermore, multiple horizontally rotatable guide wheels 111 are evenly distributed on the outer circumference of the circular notch of the mounting base 11. The wheel portion of the guide wheel 111 has a groove along the middle. The turntable assembly 12 includes a rotary guide disk 121. The outer circumference of the rotary guide disk 121 is embedded in the groove of the guide wheel 111. The lower end of the rotary guide disk 121 is provided with a rotary sprocket 123 concentric with it. The rotary guide disk 121 and the rotary sprocket 123 are provided with turntable openings that are aligned vertically and extend outward from the center. The guide wheel 111 is preferably a V-shaped pulley structure with a groove in the middle.

[0035] Furthermore, the drive mechanism 17 includes a motor 171 connected to the mounting base 11. The output end of the motor 171 meshes with the chain drive mechanism 172, and the chain drive mechanism 172 meshes with the sprocket 123. The chain drive mechanism 172 includes a master sprocket, a slave sprocket, a chain, and a tension sprocket.

[0036] Furthermore, the membrane roll mandrel assembly 19 includes a rotating shaft 191, on which the membrane roll A is mounted. The upper end of the rotating shaft 191 is provided with a membrane roll pressure plate 196, and the lower part of the rotating shaft 191 is provided with a radial groove wheel 197. The radial groove wheel 197 abuts against a transversely arranged ball plunger 198. The ball plunger 198 is connected inside a first seated bearing 194. The lower end of the first seated bearing 194 is connected to the upper end of the turntable assembly 12. The lower end of the rotating shaft 191 is also provided with a second seated bearing 195, which is mounted on the turntable assembly 12. When the rotating shaft 191 rotates, its rotational speed slows down under the action of the ball plunger 198.

[0037] Furthermore, a code disk 192 is provided in the middle of the rotating shaft 191. Multiple sets of sensing teeth 193 are evenly distributed along the circumference of the code disk 192. A proximity switch 18 is provided on one side of the sensing teeth 193. The proximity switch 18 is mounted on the mounting base 11. After the proximity switch 18 senses the rotational changes of the sensing teeth 193 on the code disk 192, the system determines whether the diaphragm A has been torn.

[0038] This embodiment explains the working principle of the bag opening wrapping and sealing mechanism:

[0039] Once the previous bag opening has been wrapped with film, the pneumatic gripper 13 extends between the bag opening of the turntable assembly 12 and the film roll core assembly 19 to clamp the film. The pneumatic gripper 13 retracts away from the turntable assembly 12, tears the film, and swings to the upper position.

[0040] After the next bag opening is closed to the turntable opening of the turntable assembly 12, the motor 171 drives the turntable assembly 12 to rotate horizontally, causing the film on the film roll A to rotate around the bag opening. When the film has rotated around the bag opening two or three times, the pneumatic gripper 13 releases the film. Under the action of the ball plunger 198, the rotating shaft 191 forms rotational resistance, which tightens the film wrapped around the bag opening. After the bag opening has completed the predetermined number of wrappings, the motor 171 stops. At this time, the swing cylinder 14 drives the pneumatic gripper 13 to swing to the lower position, and the telescopic cylinder 15 drives the pneumatic gripper 13 to extend again, clamp the film, and then retract to tear the film. At this time, the rotating shaft 191 is driven to rotate. The proximity switch 18 can sense the rotational change of the sensing teeth 193 on the code disk 192 to determine that the film A has been torn by the pneumatic gripper 13. If the proximity switch 18 cannot sense the rotational change of the sensing teeth 193, the system determines that the film A has not been successfully torn, and the system will sound an alarm.

[0041] The second objective of this invention is to provide a ton bag sealing machine, see [link to relevant documentation]. Figures 8-12 It includes a sealing frame 4, a bag opening horizontal movement mechanism 6, a bag opening gathering mechanism 2, a bag opening rotation mechanism 5, and the bag opening wrapping and sealing mechanism 1; the sealing frame 4 has a vertically arranged bag opening gathering mechanism 2 in the middle of its vertical direction, a bag opening rotation mechanism 5 is located directly above the bag opening gathering mechanism 2, a horizontally arranged bag opening horizontal movement mechanism 6 is located above one side of the bag opening gathering mechanism 2, and a bag opening wrapping and sealing mechanism 1 is located at the upper end of the other side of the bag opening gathering mechanism 2.

[0042] Furthermore, the bag opening transverse movement mechanism 6 includes a synchronous belt drive mechanism 61, on which a transfer seat 62 is provided, and on which a bag opening clamping mechanism is provided. The bag opening clamping mechanism includes a support seat 63, which is hinged to a set of swing clamping rods 64. The swing clamping rods 64 are driven by a swing cylinder 65 to achieve opening and closing actions. The cylinder body of the swing cylinder 65 is hinged to the support seat 63.

[0043] Furthermore, the bag opening gathering mechanism 2 includes a longitudinally horizontally arranged gathering bracket 21. The upper end of the gathering bracket 21 is provided with a slide rail 22. Both ends of the slide rail 22 are provided with relatively movable closing fork plates 23. The closing fork plates 23 are arranged vertically and staggered. The closing fork plates 23 are driven by the closing cylinder 24 to realize the horizontal opening and closing movement along the slide rail 22. The lower part of the closing fork plate 23 is provided with a bag opening limiting rod 25. Both sides of the bag opening limiting rod 25 are provided with swing limiting rods 26. The swing limiting rods 26 are driven by the limiting cylinder 27 to realize the swinging action of approaching or moving away from the bag opening limiting rod 25. The upper end of one closing fork plate 23 is provided with a bag opening wrapping and sealing mechanism 1.

[0044] Furthermore, the bag opening rotation mechanism 5 includes a hanger 51, and a vertically arranged lifting slide 52 is provided in the middle of the hanger 51. The lifting slide 52 is driven to rise and fall vertically by a lifting cylinder 53. A rotation drive mechanism 54 is provided on the upper part of the lifting slide 52. The output end of the rotation drive mechanism 54 is provided with an openable and closable swing clamp 55. The rotation drive mechanism 54 can drive the swing clamp 55 to rotate horizontally. The rotation drive mechanism 54 is preferably a motor drive structure. The opening and closing action of the swing clamp 55 is preferably achieved by a pneumatic gripper driving the swing clamp 55 to open and close.

[0045] Furthermore, the sealing frame 4 is also equipped with a lifting mechanism 3. The bag opening horizontal movement mechanism 6, the bag opening gathering mechanism 2, and the bag opening rotation mechanism 5 are all connected to the lifting slide of the lifting mechanism 3. The lifting mechanism 3 can be selected to automatically control the lifting or manually operate the lifting as needed to meet the sealing requirements of packaging bags of different specifications.

[0046] Explanation of the working principle of the ton bag sealing machine in this embodiment:

[0047] After the ton bag is filled, the bag opening is opened into a straight line, and the bottom of the bag is placed on the external roller conveyor. The swing cylinder 65 drives the swing clamping rod 64 to close and clamp the bag opening to complete the handover. The synchronous belt drive mechanism 61 is started and the external roller conveyor moves the bag opening of the ton bag laterally to the bag opening limit rod 25 of the bag opening closing mechanism 2. The limit cylinder 27 drives the swing limit rod 26 to swing towards the bag opening limit rod 25, which can restrict the bag opening and make it completely close in the closing fork plate 23. The lifting cylinder 53 drives the lifting slide 52 to descend vertically, and then the swing clamping plate 55 closes to clamp the uppermost bag opening. The swing cylinder 65 drives the swing clamping rod 64 to open, and the closing cylinder 24 drives the closing fork plate 23 to move towards the middle, so that the bag opening is closed to the closing fork plate 23 and the turntable opening. The rotation drive mechanism 54 drives the swing clamping plate 55 to rotate horizontally, so that the closed bag opening is twisted into a hemp. In a flower-shaped pattern, motor 171 drives turntable assembly 12 to rotate horizontally, causing the film on film roll A to rotate around the bag opening. When the film has rotated around the bag opening two or three times, pneumatic gripper 13 releases the film. Under the action of ball plunger 198, rotating shaft 191 forms rotational resistance, causing the film wrapped around the bag opening to be tightened. After the bag opening has completed the predetermined number of wrappings, motor 171 stops. At this time, swing cylinder 14 drives pneumatic gripper 13 to swing to the lower position. Telescopic cylinder 15 drives pneumatic gripper 13 to extend again, clamp the film, and then retract to tear the film. At this time, rotating shaft 191 is driven to rotate. Proximity switch 18 judges that the film has been torn by pneumatic gripper 13 by the rotational change of sensing tooth 193. Swing cylinder 14 drives pneumatic gripper 13 to swing to the upper position. Swing clamp plate 55, closing fork plate 23, swing limit rod 26 and swing clamping rod 64 return to the initial position and enter the next cycle.

Claims

1. A bag mouth film wrapping and knotting mechanism comprising a mounting base (11), characterized in that: The circular notch of the mounting base (11) is provided with a circular rotating disc assembly (12), the rotating disc assembly (12) is provided with rotating disc openings extending outward from the center and capable of accommodating the bag opening after being folded, the upper end edge of the rotating disc assembly (12) is provided with a film roll core shaft assembly (19) for mounting and fixing the film roll (A) and capable of forming rotating resistance when the film is pulled out, the lower end of the mounting base (11) is provided with a driving mechanism (17) for driving the rotating disc assembly (12) and the film roll (A) to rotate horizontally around the center of the rotating disc assembly (12), the side of the circular notch of the mounting base (11) is provided with a pneumatic clamp jaw (13) capable of horizontally extending and oscillating up and down, when the pneumatic clamp jaw (13) oscillates to the lower position, it can extend forward to clamp and break the film, when the pneumatic clamp jaw (13) oscillates to the upper position, the broken film is in the initial state of being wound and tied.

2. The bag mouth film wrapping and binding mechanism according to claim 1, characterized by: The rear end of the pneumatic clamp jaw (13) is connected with the cylinder rod of the telescopic cylinder (15), the cylinder body of the telescopic cylinder (15) is connected with one end of the swing arm (16), the other end of the swing arm (16) is hinged to the cylinder rod of the oscillating cylinder (14), the middle part of the swing arm (16) is hinged to one side of the lower end of the mounting base (11), the cylinder body of the oscillating cylinder (14) is hinged to the lower end of the mounting base (11), the telescopic cylinder (15) can drive the pneumatic clamp jaw (13) to extend and retract and break the clamped film, the oscillating cylinder (14) can drive the swing arm (16) to oscillate up and down to drive the pneumatic clamp jaw (13) and the telescopic cylinder (15).

3. The bag mouth film wrapping and binding mechanism according to claim 1, characterized by: A plurality of horizontally rotatable guide wheels (111) are uniformly arranged on the outer side circumference of the circular notch of the mounting base (11), the wheel part of the guide wheel (111) is provided with a groove in the middle, the rotating disc assembly (12) comprises a rotary guide disc (121), the outer circumference of the rotary guide disc (121) is embedded in the groove of the guide wheel (111), the lower end of the rotary guide disc (121) is provided with a rotary sprocket (123) concentric with it, the rotary guide disc (121) and the rotary sprocket (123) are provided with rotating disc openings aligned up and down and extending outward from the center.

4. The bag mouth film wrapping and binding mechanism according to claim 1, characterized by: The film roll core shaft assembly (19) comprises a rotating shaft (191), the upper part of the rotating shaft (191) is provided with a film roll (A), the upper end of the rotating shaft (191) is provided with a film roll pressing plate (196), the lower part of the rotating shaft (191) is provided with a radial groove wheel (197), the radial groove wheel (197) abuts against a transversely arranged ball head plunger (198), the ball head plunger (198) is connected inside a first bearing with seat (194), the lower end of the first bearing with seat (194) is connected to the upper end of the rotating disc assembly (12), the lower end of the rotating shaft (191) is also provided with a second bearing with seat (195), the second bearing with seat (195) is mounted on the rotating disc assembly (12).

5. The bag mouth film wrapping and knotting mechanism according to claim 4, characterized by: The middle part of the rotating shaft (191) is provided with a code disc (192), a plurality of groups of induction teeth (193) are uniformly arranged in the circumferential direction of the code disc (192), one side of the induction teeth (193) is provided with a proximity switch (18), the proximity switch (18) is mounted on the mounting base (11).

6. A ton bag tacking machine characterized by: The bag mouth wrapping and knotting mechanism comprises a knotting frame (4), a bag mouth transverse moving mechanism (6), a bag mouth folding mechanism (2), a bag mouth rotating mechanism (5) and the bag mouth wrapping and knotting mechanism as claimed in any one of claims 1-5. The knotting frame (4) is vertically provided with the bag mouth folding mechanism (2) in the middle, the bag mouth rotating mechanism (5) is arranged above the bag mouth folding mechanism (2), the bag mouth transverse moving mechanism (6) is arranged horizontally above one side of the bag mouth folding mechanism (2), and the bag mouth wrapping and knotting mechanism is arranged at the upper end of the other side of the bag mouth folding mechanism (2).

7. The ton bag tucker of claim 6, wherein: The bag mouth transverse moving mechanism (6) comprises a synchronous belt transmission mechanism (61), a moving seat (62) is arranged on the synchronous belt of the synchronous belt transmission mechanism (61), a bag mouth clamping mechanism is arranged on the moving seat (62), the bag mouth clamping mechanism comprises a support seat (63), the support seat (63) is hinged to a group of swing clamping rods (64), the swing clamping rods (64) are driven by a swing cylinder (65) to realize opening and closing actions, and the cylinder body of the swing cylinder (65) is hinged to the support seat (63).

8. The ton bag tucker of claim 6, wherein: The bag mouth folding mechanism (2) comprises a folding support (21) arranged longitudinally and horizontally, the folding support (21) is provided at the upper end with a slide rail (22), the slide rail (22) is provided at both ends with oppositely movable closing fork plates (23), the closing fork plates (23) are arranged in an upper-lower staggered manner, the closing fork plates (23) are driven by a closing cylinder (24) to realize horizontal opening and closing movements along the slide rail (22), the lower side of the closing fork plates (23) is provided with a bag mouth limiting rod (25), the both sides of the bag mouth limiting rod (25) are provided with swing limiting rods (26), the swing limiting rods (26) are driven by limiting cylinders (27) to realize swing actions of approaching or moving away from the bag mouth limiting rod (25), and the upper end of one of the closing fork plates (23) is provided with the bag mouth wrapping and knotting mechanism.

9. The ton bag tucker of claim 6, wherein: The bag mouth rotating mechanism (5) comprises a hanging bracket (51), the hanging bracket (51) is provided in the middle with a vertically arranged lifting slide (52), the lifting slide (52) is vertically lifted by a lifting cylinder (53), the lifting slide (52) is provided at the upper side with a rotating driving mechanism (54), the output end of the rotating driving mechanism (54) is provided with an openable and closable swing clamping plate (55), and the rotating driving mechanism (54) can drive the swing clamping plate (55) to horizontally rotate.

10. The ton bag tucker of claim 6, wherein: The knotting frame (4) is further provided with a lifting mechanism (3), and the bag mouth transverse moving mechanism (6), the bag mouth folding mechanism (2) and the bag mouth rotating mechanism (5) are connected to the lifting slide of the lifting mechanism (3).

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