Automatic film strapping machine

Abstract

The invention discloses an automatic film strapping machine which comprises a strapping machine body, a notch is formed in the surface of the strapping machine body, an object sensor is arranged on one side of the notch, a partition plate is vertically arranged in the strapping machine body, an arc-shaped notch is formed in the upper portion of the partition plate, an annular fluted disc capable of rotating is arranged on one side of the partition plate, the annular fluted disc is in a C shape, and the upper portion of the annular fluted disc is provided with an arc-shaped groove. A detachable thin film roll is arranged on one side of the annular fluted disc, a driving mechanism for driving the annular fluted disc to rotate is arranged on the other side of the partition plate, and a cutting device for cutting off a thin film is arranged in the strapping machine body. When the thin film strapping machine is used, objects can be strapped in a full-automatic mode, the thin film does not need to be manually cut off during strapping, in addition, the film head of the thin film is clamped all the time, circulating packaging and strapping work is facilitated, and the thin film strapping machine is suitable for application and popularization.

Description

Technical Field

[0001] The invention relates to the technical field of film bundling, and in particular to an automatic film bundling machine. Background Art

[0002] In many fields such as medicine, food, workpieces and equipment, products are usually packaged in boxes before leaving the factory for easy collection and transportation.

[0003] However, multiple packaging boxes are rather scattered and not easy to be stacked together for transportation; therefore, people have come up with the idea of ​​bundling multiple scattered products together through film for centralized and large-scale transportation.

[0004] However, in actual use, the current bundling methods are mostly manual or semi-automatic bundling, which is inefficient and labor-intensive for employees. In addition, manual bundling or semi-automatic bundling usually requires manual cutting of the film, which is inconvenient to use, and the internal film head cannot be clamped during bundling, which affects the bundling quality and the use effect is not ideal. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide an automatic film strapping machine which can fully automatically strap objects without manual cutting of the film during strapping. In addition, the film head is always clamped, which is convenient for circular packaging and strapping work.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is: an automatic film strapping machine, comprising a strapping machine body, a surface of the strapping machine body is provided with a notch, one side of the notch is provided with an object sensor, a partition is vertically provided in the strapping machine body, an arc-shaped notch is provided above the partition, one side of the partition is provided with a rotatable annular gear disk, the annular gear disk is C-shaped, one side of the annular gear disk is provided with a detachable film roll, the other side of the partition is provided with a driving mechanism for driving the annular gear disk to rotate, and a cutting device for cutting the film is provided in the strapping machine body.

[0007] Preferably, the outer circumference of the annular gear disk is provided with a plurality of driving wheels and outer limiting wheels, the driving wheel is provided with a meshing tooth 1, the annular gear disk is provided with a meshing tooth 2, the meshing tooth 1 matches the meshing tooth 2, and the inner side of the annular gear disk is provided with a plurality of inner limiting wheels, and the driving wheel, outer limiting wheel and inner limiting wheel can all be rotatably arranged on the partition.

[0008] Preferably, the driving mechanism includes two synchronous pulleys 2 that are transmission-connected to the driving wheel, and the two synchronous pulleys 2 are connected by a synchronous belt 2. One of the synchronous pulleys 2 is provided with a motor 3, and when the motor 3 is running, it drives the annular gear disk to rotate through the synchronous pulley 2, the synchronous belt 2 and the driving wheel.

[0009] Preferably, the strapping machine body is also provided with a clamping mechanism for clamping the film head, the clamping mechanism includes a sliding seat and an electromagnet above the sliding seat, one side of the electromagnet is provided with two parallel vertical rods, a lifting block is sleeved on the vertical rod, a spring is provided under the lifting block, an L-shaped moving clamp is provided on one side of the lifting block, a fixed clamp is provided on the top of the vertical rod, the fixed clamp is arranged directly above the moving clamp, and the film head is clamped between the fixed clamp and the moving clamp.

[0010] Preferably, a base is provided below the sliding seat, and the sliding seat can translate left and right on the base, and the left and right translation of the sliding seat can clamp or release the film head.

[0011] Preferably, a motor and two synchronous pulleys are provided on one side of the base, the two synchronous pulleys are connected by a synchronous belt, the synchronous belt is fixedly connected to the sliding seat through a connecting rod, guide wheels are provided on both sides below the sliding seat, the circumference of the guide wheel is provided with an annular recess, guide rods are provided on both sides of the base, the guide wheels cooperate with the guide rods through the annular recesses, and the sliding seat is driven to translate along the guide rods when the synchronous belt rotates.

[0012] Preferably, the cutting device includes an electromagnet 2 away from the film roll and a telescopic rod passing through the partition, a lever is provided at the output end of the electromagnet 2, a sleeve is provided on the telescopic rod, the sleeve is fixed on the partition, one end of the telescopic rod extends outward through the sleeve and the partition, and a connecting block is provided at the other end, a hinge shaft is provided at the end of the connecting block, the lever is connected to the hinge shaft, a telescopic block is provided at the extending end of the telescopic rod, a cutting motor is provided on the telescopic block, and a circular cutting knife is provided at the output end of the cutting motor, and the electromagnet 2 drives the telescopic rod to extend and retract when it is in operation, and the telescopic rod drives the cutting knife to contact or move away from the film when it is extended and retracted.

[0013] Preferably, the lever is curved, the lever is hinged to the wedge block at the curved portion, a waist slot hole is provided at the end of the lever, and the lever is connected to the hinge shaft at the waist slot hole.

[0014] Preferably, the partition is provided with a vertically fixed upright plate on the side away from the annular gear disk, a motor 2 is provided on the inner side of the upright plate, a horizontally fixed optical axis is provided on the top of the upright plate, an upper support is provided on the optical axis sleeve, a rocker arm is provided at the output end of the motor 2, the rocker arm is connected to the bottom surface of the upper support through a connecting shaft, a fixed reference rod is provided on the surface of the upper support, the reference rod passes through the partition and extends to the other side, and the reference rod performs plugging and pulling movements in the partition when the motor 2 is working.

[0015] Preferably, a partition cover is provided around the annular gear disc, and a control circuit board and a power supply are provided on the inner bottom surface of the strapping machine body.

[0016] An automatic film strapping machine disclosed in the present invention comprises a strapping machine body, a surface of the strapping machine body is provided with a notch, one side of the notch is provided with an object sensor, a partition is vertically provided in the strapping machine body, an arc-shaped notch is provided above the partition, one side of the partition is provided with a rotatable annular gear disk, the annular gear disk is C-shaped, one side of the annular gear disk is provided with a detachable film roll, the other side of the partition is provided with a driving mechanism for driving the annular gear disk to rotate, and a cutting device for cutting the film is provided in the strapping machine body; compared with the prior art, the film strapping machine has the advantages of being able to fully automatically strap objects when in use, and no manual cutting of the film is required during strapping, and in addition, the film head of the film is always clamped, which is convenient for the circular packaging and strapping work. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the automatic film strapping machine of the present invention.

[0018] Figure 2 The internal structure of the automatic film strapping machine of the present invention is shown in FIG. Figure 1 .

[0019] Figure 3 The internal structure of the automatic film strapping machine of the present invention is shown in FIG. Figure 2 .

[0020] Figure 4 The internal structure of the automatic film strapping machine of the present invention is shown in FIG. Figure 3 .

[0021] Figure 5 The internal structure of the automatic film strapping machine of the present invention is shown in FIG. Figure 4 .

[0022] Figure 6 For the present invention Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0023] Figure 7 For the present invention Figure 5 Schematic diagram of the enlarged structure at point B in the middle.

[0024] Figure 8 It is a structural schematic diagram of the clamping mechanism in the present invention.

[0025] Fig. 9 For the present invention Figure 8 Schematic diagram of the enlarged structure at point C in the middle.

[0026] Fig.10 The structure of the cutting device in the present invention is shown in FIG. Figure 1 .

[0027] Fig.11 The structure of the cutting device in the present invention is shown in FIG. Figure 2.

[0028] Fig.12 It is a schematic diagram of the movement of the movable jaw and the fixed jaw clamping the film in the present invention.

[0029] In the figure: 1, strapping machine body; 2, object sensor; 3, partition; 4, annular gear plate; 41, driving wheel; 42, meshing tooth 1; 43, outer limit wheel; 44, inner limit wheel; 45, meshing tooth 2; 5, film roll; 6, partition cover; 7, base; 71, guide rod; 8, motor 1; 81, synchronous pulley 1; 82, synchronous belt 1; 9, sliding seat; 91, guide wheel; 10, electromagnet 1; 11, vertical rod; 111, lifting block; 112, moving clamp Plate; 113, fixed jaw; 114, spring; 12, vertical plate; 13, electromagnet 2; 131, lever; 1311, wedge block; 132, connecting block; 133, hinge shaft; 134, telescopic rod; 135, sleeve; 136, telescopic block; 14, cutting motor; 15, cutting blade; 16, motor 2; 17, rocker arm; 18, upper support; 181, optical axis; 19, reference rod; 20, motor 3; 21, synchronous pulley 2; 22, synchronous belt 2. DETAILED DESCRIPTION

[0030] The present invention will now be described in further detail with reference to the accompanying drawings. The accompanying drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and thus only show the components related to the present invention.

[0031] Please refer to Figure 1-11 An automatic film strapping machine comprises a strapping machine body 1, a notch is provided on the surface of the strapping machine body 1, an object sensor 2 is provided on one side of the notch, a partition 3 is vertically provided inside the strapping machine body 1, an arc-shaped notch is provided above the partition 3, a rotatable annular gear disc 4 is provided on one side of the partition 3, the annular gear disc 4 is C-shaped, a detachable film roll 5 is provided on one side of the annular gear disc 4, a driving mechanism for driving the annular gear disc 4 to rotate is provided on the other side of the partition 3, and a cutting device for cutting the film is provided inside the strapping machine body 1.

[0032] A partition cover 6 is provided around the annular gear disc 4, and a control circuit board and a power supply for driving are provided on the inner bottom surface of the strapping machine body 1.

[0033] When in use, the object to be bundled and wrapped is placed on the strapping machine body 1. After being placed, the object sensor 2 receives a response signal, which drives the driving mechanism to operate. After the driving mechanism operates, the annular gear disk 4 starts to rotate; since the film roll 5 is arranged on the annular gear disk 4, the film roll also rotates accordingly, so that the film is wound onto the object to realize automatic film bundling. After bundling is completed, the film is cut by the cutting device.

[0034] In this embodiment, the outer circumference of the annular gear disk 4 is provided with a plurality of driving wheels 41 and outer limiting wheels 43, wherein there are two driving wheels 41 and two outer limiting wheels 43, the two driving wheels 41 are arranged below the annular gear disk 4, and the two outer limiting wheels 43 are arranged above the annular gear disk 4, wherein the driving wheel 41 can also play a limiting role; the driving wheel 41 is provided with a meshing tooth 1 42, the annular gear disk 4 is provided with a meshing tooth 2 45, the meshing tooth 1 42 is matched with the meshing tooth 2 45, and the inner side of the annular gear disk 4 is provided with a plurality of inner limiting wheels 44, and the driving wheel 41, the outer limiting wheel 43 and the inner limiting wheel 44 can all be rotatably arranged on the partition 3.

[0035] In addition, the circumference of the driving wheel 41 is provided with an annular flange, and the outer circumference of the annular gear plate 4 is provided with an annular recess. When the annular gear plate 4 rotates, the annular flange always matches the annular recess, so that the rotation of the annular gear plate 4 is more stable.

[0036] Specifically, the driving mechanism includes two synchronous pulleys 21 that are transmission-connected to the driving wheel 41, and the two synchronous pulleys 21 are connected by a synchronous belt 22. One of the synchronous pulleys 21 is provided with a motor 3 20. When the motor 3 20 is running, it drives the annular gear plate 4 to rotate through the synchronous pulley 21, the synchronous belt 22 and the driving wheel 41.

[0037] That is to say, the synchronous pulley 21 and the driving wheel 41 are coaxially connected, and the synchronous pulley 21 is set up to drive the driving wheel 41 to rotate; in addition, since the two synchronous pulleys 21 are connected by the synchronous belt 22, and one of the synchronous pulleys 21 is provided with a motor 3 20; therefore, when the motor 3 20 is started, the synchronous pulley 21, the synchronous belt 22, and the driving wheel 41 rotate in conjunction, and since the driving wheel 41 is engaged with the annular gear disc 4 through teeth, the annular gear disc 4 is driven to rotate to achieve film bundling; the entire equipment is controlled by a PLC program, and bundling starts when the object sensor receives a response signal, and is cut after the set number of bundling circles.

[0038] Please refer again Figure 8-9 In order to improve the bundling quality and avoid the internal confusion of the film head, a clamping mechanism for clamping the film head is also provided in the strapping machine body 1, and the clamping mechanism includes a sliding seat 9 and an electromagnet 10 above the sliding seat 9, and two parallel vertical rods 11 are provided on one side of the electromagnet 10, and a lifting block 111 is sleeved on the vertical rod 11, and a spring 114 is provided under one of the lifting blocks 111, and an L-shaped moving clamp 112 is provided on one side of the lifting block 111, and a fixed clamp 113 is provided on the top of the vertical rod 11, and the fixed clamp 113 is arranged directly above the moving clamp 112, and the film head is clamped between the fixed clamp 113 and the moving clamp 112.

[0039] After the electromagnet 10 is energized, the movable jaw 112 and the lifting block 111 move downward along the vertical rod 11 together, while pressing the spring 114; at this time, the movable jaw 112 is not in contact with the fixed jaw 113, and the gap between the movable jaw 112 and the fixed jaw 113 is reserved for clamping the membrane head; when the membrane head is between the movable jaw 112 and the fixed jaw 113, the electromagnet 10 is de-energized, and at this time the movable jaw 112 (lifting block 111) moves upward through the electromagnet 10 and the spring 114 below, and after moving upward, the movable jaw 112 contacts the fixed jaw 113; at this time, the membrane head is clamped between the movable jaw 112 and the fixed jaw 113, which provides convenience for subsequent film bundling and avoids internal confusion of the membrane head affecting the bundling quality.

[0040] Please refer again Figure 5-6 A base 7 is provided below the sliding seat 9, and the sliding seat 9 can translate left and right on the base 7. Since the clamping device is provided on the sliding seat 9, the left and right translation of the sliding seat 9 can clamp or release the film head.

[0041] Specifically, a motor 8 and two synchronous pulleys 81 are provided on one side of the base 7, and the two synchronous pulleys 81 are connected by a synchronous belt 82. The synchronous belt 82 is fixedly connected to the sliding seat 9 through a connecting rod. Guide wheels 91 are provided on both sides of the lower side of the sliding seat 9. The circumference of the guide wheel 91 is provided with an annular recess. Guide rods 71 ​​are provided on both sides of the base 7. The guide wheels 91 cooperate with the guide rods 71 ​​through the annular recess. When the synchronous belt 82 rotates, it drives the sliding seat 9 to translate along the guide rods 71.

[0042] The specific working process is: when the motor 8 is running, the synchronous belt 82 starts to rotate. Since the synchronous belt 82 is fixedly connected to the sliding seat 9 through a connecting rod, the sliding seat 9 can move in the rotation direction of the synchronous belt 82; during the movement, the guide wheel 91 under the sliding seat 9 is always matched with the guide rod 71.

[0043] That is to say, the motor 8 drives the sliding seat 9 to move left and right in order to clamp or release the membrane head; when the membrane head needs to be clamped, the motor 8 rotates to make the sliding seat 9 move toward the partition 3, and then the electromagnet is energized to make the movable clamp 112 and the fixed clamp 113 clamp the membrane head; after the membrane head is released, the motor 8 rotates in the opposite direction to make the sliding seat 9 move away from the partition, and at this time the movable clamp 112 and the fixed clamp 113 are not in contact with the membrane head.

[0044] Please refer again Figure 10-11The cutting device includes an electromagnet 13 away from the film roll 5 and a telescopic rod 134 passing through the partition 3. A lever 131 is provided at the output end of the electromagnet 13. A sleeve 135 is sleeved on the telescopic rod 134. The sleeve 135 is fixed on the partition 3. One end of the telescopic rod 134 extends outward through the sleeve 135 and the partition 3, and a connecting block 132 is provided at the other end. A hinge shaft 133 is provided at the end of the connecting block 132. The lever 131 is connected to the hinge shaft 133. A telescopic block 136 is provided at the extending end of the telescopic rod 134. A cutting motor 14 is provided on the telescopic block 136. A circular cutting blade 15 is provided at the output end of the cutting motor 14. When the electromagnet 13 is in operation, the telescopic rod 134 is driven to extend and retract. When the telescopic rod 134 is extended and retracted, the cutting blade 15 is driven to contact or move away from the film.

[0045] In this embodiment, the lever 131 is bent, and the lever 131 is hinged to the wedge block 1311 at the bend. The wedge block 1311 is fixed on the vertical plate 12. The end of the lever 131 is provided with a waist slot hole, and the lever 131 is connected to the hinge shaft 133 at the waist slot hole.

[0046] When the film needs to be cut after being bundled, the electromagnet 13 is energized and the output rod is retracted. Since the lever 131 is bent, the telescopic rod 134 will be further extended outward in the sleeve 135. After the extension, the telescopic block 136, the cutting motor 14 and the cutting blade 15 move toward the film, and the cutting motor 14 drives the cutting blade 15 to rotate to cut the film.

[0047] In the scheme of the present invention, in order to provide a good reference for bundling and cutting, the partition 3 is provided with a vertically fixed upright plate 12 on the side away from the annular gear disk 4, and a motor 2 16 is provided on the inner side of the upright plate 12. A horizontally fixed optical axis 181 is provided on the top of the upright plate 12, and an upper support 18 is sleeved on the optical axis 181, wherein the upper support 18 can move along the optical axis 181, and a swing rod 17 (which can also be understood as a cam) is provided at the output end of the motor 2 16, and the swing rod 17 is connected to the bottom surface of the upper support 18 through a connecting shaft. After the motor 2 16 is running, the swing rod 17 starts to rotate, and the swing rod drives the upper support 18 to move along the optical axis 181 through the upper connecting shaft. A fixed reference rod 19 is provided on the surface of the upper support 18, and the reference rod 19 extends through the partition 3 to the other side. When the motor 2 16 is working, the reference rod 19 performs plug-in and pull-out movements in the partition 3.

[0048] In this embodiment, the electromagnet 10 and the motor 2 16 are operated alternately.

[0049] In this embodiment, the fixed jaw 113 and the movable jaw 112 are disposed between two reference rods 19 ; the fixed jaw 113 and the movable jaw 112 clamp or release the membrane head between the two reference rods 19 .

[0050] Before the strapping machine is used for strapping, the film roll 5 is first installed, and the film head is clamped between the two reference rods 19 by the fixed clamp piece 113 and the movable clamp piece 112; The entire film bundling process is as follows: ① First, the object to be bundled is placed in the strapping machine, and the object sensor 2 first senses the object; ② Then the motor 3 20 first runs to drive the synchronous pulley 2, the driving wheel 41 and the annular gear disc 4 to start rotating and bundling; ③ When the annular toothed disc 4 rotates 1.3 circles, the electromagnet 10 is energized to make the movable clamp 112 move downward to release the clamped film head, and at the same time, the motor 8 rotates to make the sliding seat 9 (and the clamping mechanism above) move to the left to separate from the film; ④ The operation of the second motor 16 drives the upper support 18 to move rightward along the optical axis 181 to retract the reference rod 19; ⑤ After the annular toothed disc 4 rotates to a predetermined number of circles, the reference rod 19 extends out of the partition plate 3 again. Since the annular toothed disc 4 is still in a rotating state, the film will also be wound around the extended reference rod 19. At the same time, the motor 8 moves the sliding seat 9 to the right. During the movement, the electromagnet 10 drives the movable clamp 112 to move upward to clamp the film again. The extension of the reference rod 19 facilitates the film to be clamped again. ⑥ The electromagnet 13 operates, and the telescopic rod 134 will extend further outward in the sleeve 135. After extending, the cutting motor 14 drives the cutting blade 15 to rotate to cut the film, and the whole returns to its original position after cutting.

[0051] Step ⑤ Please refer to Fig.12 When the reference rod 19 extends out of the partition 3, the annular toothed disk 4 continues to wind around, and when it continues to wind around the bottom of the reference rod 19, the motor 1 8 moves the sliding seat 9 to the right, so that the fixed clamp 113 and the movable clamp 112 clamp the film under the reference rod 19; finally, the annular toothed disk 4 stops rotating, and the electromagnet 2 13 drives the cutting motor 14 and the cutting blade 15 to cut the film.

[0052] After cutting is completed, the fixed clamp piece 113 and the movable clamp piece 112 clamp the film head again for the next bundling, and the cycle continues; that is to say, before bundling or after bundling, the fixed clamp piece 113 and the movable clamp piece 112 always clamp the film head; the reference rod 19 is provided to provide a film clamping reference, so that the fixed clamp piece 113 and the movable clamp piece 112 clamp the film head more accurately, and the cooperation between the two can greatly improve the packaging and bundling efficiency.

[0053] The annular toothed disc 4 is always in a rotating state during the whole bundling and winding process, and stops rotating and starts cutting the film after reaching the set number of winding turns. The whole bundling process can automatically clamp and cut the film in a cycle, with a high degree of automation, and can achieve efficient automatic bundling and packaging.

[0054] In this embodiment, the motor 1 8 and the motor 2 16 are both stepper motors.

[0055] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. An automatic film strapping machine, comprising a strapping machine body, characterized in that: A notch is provided on the surface of the strapping machine body, an object sensor is provided on one side of the notch, a partition is vertically provided in the strapping machine body, an arc-shaped notch is provided above the partition, a rotatable annular gear disk is provided on one side of the partition, the annular gear disk is C-shaped, a detachable film roll is provided on one side of the annular gear disk, a driving mechanism for driving the annular gear disk to rotate is provided on the other side of the partition, and a cutting device for cutting the film is provided in the strapping machine body.

2. The automatic film strapping machine according to claim 1, characterized in that: The outer circumference of the annular gear disk is provided with multiple driving wheels and outer limiting wheels, the driving wheel is provided with meshing tooth 1, the annular gear disk is provided with meshing tooth 2, the meshing tooth 1 matches the meshing tooth 2, and the inner side of the annular gear disk is provided with multiple inner limiting wheels, and the driving wheel, outer limiting wheel and inner limiting wheel can all be rotatably arranged on the partition.

3. The automatic film strapping machine according to claim 2, characterized in that: The driving mechanism includes two synchronous pulleys 2 connected to the driving wheel, and the two synchronous pulleys 2 are connected by a synchronous belt 2. One of the synchronous pulleys 2 is provided with a motor 3. When the motor 3 is running, it drives the annular gear disk to rotate through the synchronous pulley 2, the synchronous belt 2 and the driving wheel.

4. The automatic film strapping machine according to claim 1, characterized in that: The strapping machine body is also provided with a clamping mechanism for clamping the film head, the clamping mechanism includes a sliding seat and an electromagnet above the sliding seat, one side of the electromagnet is provided with two parallel vertical rods, a lifting block is sleeved on the vertical rod, a spring is provided under the lifting block, an L-shaped moving clamp is provided on one side of the lifting block, a fixed clamp is provided on the top of the vertical rod, the fixed clamp is arranged directly above the moving clamp, and the film head is clamped between the fixed clamp and the moving clamp.

5. The automatic film strapping machine according to claim 4, characterized in that: A base is provided below the sliding seat, and the sliding seat can translate left and right on the base. The left and right translation of the sliding seat can clamp or release the film head.

6. The automatic film strapping machine according to claim 5, characterized in that: A motor and two synchronous pulleys are provided on one side of the base, and the two synchronous pulleys are connected by a synchronous belt. The synchronous belt is fixedly connected to the sliding seat through a connecting rod. Guide wheels are provided on both sides of the lower side of the sliding seat, and an annular recess is provided on the circumference of the guide wheel. Guide rods are provided on both sides of the base, and the guide wheels cooperate with the guide rods through the annular recesses. When the synchronous belt rotates, the sliding seat is driven to translate along the guide rods.

7. The automatic film strapping machine according to any one of claims 1 to 6, characterized in that: The cutting device includes an electromagnet 2 away from the film roll and a telescopic rod passing through the partition, a lever is provided at the output end of the electromagnet 2, a sleeve is sleeved on the telescopic rod, the sleeve is fixed on the partition, one end of the telescopic rod extends outward through the sleeve and the partition, and a connecting block is provided at the other end, a hinge shaft is provided at the end of the connecting block, the lever is connected to the hinge shaft, a telescopic block is provided at the extending end of the telescopic rod, a cutting motor is provided on the telescopic block, and a circular cutting knife is provided at the output end of the cutting motor, the electromagnet 2 drives the telescopic rod to extend and retract when in operation, and the cutting knife is driven to contact or move away from the film when the telescopic rod is extended and retracted.

8. The automatic film strapping machine according to claim 7, characterized in that: The lever is in a curved shape, and is hinged to the wedge block at the curved portion. A waist slot hole is provided at the end of the lever, and the lever is connected to the hinge shaft at the waist slot hole.

9. The automatic film strapping machine according to claim 1, characterized in that: The partition is provided with a vertically fixed upright plate on the side away from the annular gear disk, and a second motor is provided on the inner side of the upright plate. A horizontally fixed optical axis is provided on the top of the upright plate, and an upper support is provided on the optical axis sleeve. A rocker arm is provided at the output end of the second motor, and the rocker arm is connected to the bottom surface of the upper support through a connecting shaft. A fixed reference rod is provided on the surface of the upper support, and the reference rod extends to the other side through the partition. When the second motor is working, the reference rod performs plugging and pulling movements in the partition.

10. The automatic film strapping machine according to claim 1, characterized in that: A partition cover is arranged around the annular gear disc, and a control circuit board and a power supply are arranged on the inner bottom surface of the strapping machine body.

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