A film coating and film breaking system for degradable films and methods of use thereof

Abstract

The application relates to a film covering and cutting system suitable for degradable film and a use method thereof, the system comprising a rack connected to a rice film covering and transplanting machine, further comprising film spreading shafts, film pressing rollers and edge pressing wheels through which the degradable film sequentially passes, the rack being further provided with a film cutting knife sliding along the width direction of the degradable film, a cutting structure driving the film cutting knife to slide, and a collection device collecting rack position information. In use, the film spreading shafts, the film pressing rollers and the edge pressing wheels are arranged to realize that the degradable film is covered on the soil; through the arrangement of the collection device, the environmental data of the rice film covering and transplanting machine running is monitored in real time, transmission information is collected, and when the rack reaches the end point of the paddy field, a signal is transmitted to the cutting structure in time, so that the cutting structure drives the film cutting knife to cut the degradable film, thereby improving the film cutting efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of agricultural machinery, especially to the field of mulching technology, and particularly to a mulching and film cutting system suitable for degradable film and a using method thereof. BACKGROUND

[0002] With the continuous development of modern agricultural technology, the mode of agricultural production is gradually changing towards intelligence, high efficiency and green. In the field of rice planting, traditional mulching technology has always been one of the important means to improve the yield and quality of rice. However, the traditional mulching material is mostly plastic degradable film, which will generate a large amount of waste after use, causing serious pollution to the environment, and also increasing the labor cost and economic burden of farmers.

[0003] In order to solve this problem, in recent years, degradable film mulching technology has appeared, that is, using degradable materials to cover the soil surface, which can play the role of temperature and moisture preservation, weed growth inhibition and soil fertility improvement, and can naturally degrade after use, reducing environmental pollution.

[0004] However, the existing degradable film mulching technology still has some problems, such as low efficiency of traditional degradable film mulching and film cutting, and poor mulching effect. SUMMARY

[0005] The present application provides a mulching and film cutting system suitable for degradable film and a using method thereof to improve the efficiency of mulching and film cutting and ensure the mulching effect.

[0006] The present application is realized by the following technical scheme, a mulching and film cutting system suitable for degradable film, comprising a rack connected to a rice mulching and transplanting machine, further comprising a film spreading shaft, a film pressing roller and a edge pressing wheel through which the degradable film sequentially passes, the rack is further provided with a film cutting knife sliding along the width direction of the degradable film, a cutting structure driving the film cutting knife to slide, and a collection device collecting the position information of the rack.

[0007] In use, the film spreading shaft, film pressing roller and edge pressing wheel are arranged to cover the degradable film on the soil and stretch and tighten the degradable film by pulling. In addition, the black film surface is subjected to tension in the front and rear directions, and the width direction naturally expands and uniformly distributes on the surface of the film spreading shaft and the film pressing roller. At the same time, the edge of the degradable film is pressed into the soil by the action of the edge pressing wheel, so as to realize rapid mulching of the degradable film and fixation of the degradable film, thereby ensuring the mulching effect. Through the arrangement of the collection device, the environmental data of the rice mulching and transplanting machine running is monitored in real time, the transmission information is collected, and when the rack reaches the end point of the rice field, the signal is transmitted to the cutting structure in time, so that the cutting structure drives the film cutting knife to cut the degradable film, thereby improving the film cutting efficiency.

[0008] As preferred, the rack is further provided with a film cutting block between the film unwinding shaft and the film pressing roller, the film cutting block is provided with a through hole for the degradable film to pass through, and the film cutting knife is slidably connected to the film cutting block and extends into the through hole.

[0009] The preferred scheme provides support for the film cutting knife and guiding effect for the film cutting knife through the provision of the film cutting block.

[0010] As preferred, the cutting structure comprises a conveying belt conveying in the sliding direction of the film cutting knife, a stepping motor driving the conveying belt to convey and electrically connected with the collection device, the film cutting knife is further provided with a supporting wheel supporting the upper belt of the conveying belt, the lower belt of the conveying belt is detachably connected to the film cutting knife, and the rack is further provided with an infrared sensor detecting the supporting wheel.

[0011] The preferred scheme facilitates the sliding of the film cutting knife through the provision of the conveying belt, and the supporting wheel supports the upper belt. The infrared sensor is placed at the initial position of the film cutting knife when cutting, and an alarm is issued when the infrared sensor does not detect the film cutting knife, avoiding the risk of injury, damage to the film and the film cutting knife.

[0012] As preferred, the film pressing roller is in contact with the soil, and the edge pressing wheel is provided with two edge pressing wheels arranged along the width direction of the degradable film, and the edge pressing wheel extends into the soil.

[0013] The preferred scheme enables the degradable film to be covered with the soil through the provision of the position of the film pressing roller, and ensures that the edge of the degradable film is pressed into the soil through the provision of the position of the edge pressing wheel.

[0014] As preferred, the collection device comprises two industrial cameras arranged on the rack and facing the advancing direction, and an electromagnetic sensor extending to the front of the edge pressing wheel and detecting the motion of the mechanical hand of the transplanter.

[0015] The preferred scheme transmits images in real time for detection through the provision of the industrial camera, and detects the motion of the mechanical hand and stops the motion through the provision of the electromagnetic sensor. When the mechanical hand stops moving for 10 seconds and the image of the industrial camera is also within the range of the end of the rice field, the film cutting knife is cut.

[0016] As preferred, the rack is further provided with a control box, a display screen electrically connected with the control box, and a storage battery supplying power to the control box and the display screen, and the control box is further electrically connected with the industrial camera, the infrared sensor, the stepping motor, and the electromagnetic sensor.

[0017] The preferred scheme realizes the transmission and processing of electrical signals through the provision of the control box, and facilitates human-computer interaction through the provision of the display screen.

[0018] As preferred, the rack is further provided with a film placing shaft behind the film stretching shaft and used for supporting the degradable film roll.

[0019] The preferred scheme places the film placing shaft on the rack, and places the degradable film roll on the film placing shaft.

[0020] As preferred, the two ends of the film placing shaft are respectively connected with two first connecting plates, the first connecting plates are provided with a plurality of first positioning holes arranged along the height direction, and the rack is provided with a first pin shaft inserted into the first positioning holes.

[0021] The two ends of the film stretching shaft are respectively connected with two second connecting plates, the second connecting plates are provided with a plurality of second positioning holes arranged along the height direction, and the rack is provided with a second pin shaft inserted into the second positioning holes.

[0022] The preferred scheme adjusts the height of the film placing shaft through the two first connecting plates, the first pin shaft and the first positioning holes, and adjusts the height of the film stretching shaft through the two second connecting plates, the second pin shaft and the second positioning holes, so as to change the space stretching of the degradable film and facilitate the stretching of the degradable film.

[0023] As preferred, the film cutting block is further provided with a sliding hole extending along the width direction of the degradable film, the film cutting knife is fixedly connected with a sliding rod inserted into the sliding hole, the film cutting block is further provided with a groove in communication with the sliding hole and the through hole, and the film cutting knife is inserted into the groove and extends into the through hole.

[0024] The preferred scheme limits the height position of the film cutting knife by adjusting the height of the sliding hole and the through hole when the film cutting knife slides through the sliding hole, so as to facilitate the cutting of the film cutting knife.

[0025] A use method of a film covering and cutting system suitable for degradable film, comprising the following steps:

[0026] a. When the rice film covering and transplanting machine performs film covering work, the degradable film roll is placed on the film placing shaft, and the degradable film is stretched and rotated through the film stretching shaft, the film cutting block, the film pressing roller and the edge pressing wheel in sequence. The film pressing roller fully adheres the degradable film to the soil, and the edge pressing wheel extrudes the two edges of the degradable film under the soil. When the rice film covering and transplanting machine moves forward for work, the degradable film has a backward pulling force after covering the soil, so as to drive the film placing shaft to rotate in the opposite direction of the wheels of the rice film covering and transplanting machine, so that the degradable film starts to cover film along with the forward movement of the rice film covering and transplanting machine, and the degradable film can be covered on the paddy field to achieve the purpose of film covering.

[0027] b. When approaching the end of the rice field, the industrial camera located at the front end of the rice film mulching transplanter takes real-time images of the forward movement and uploads them to the control module in the control box. The control module has a large amount of pre-collected head picture information, with a rich sample data set. Then, the original data set is preliminarily processed through image processing technology to make the features of the head have a strong contrast, which facilitates further accurate identification of the features of the head. Next, through the deep learning model based on YOLOv8 after training, a horizontal line representing the end of the rice field is fitted in the picture of the head, and after verification by the verification set, it is concluded that the fitting degree meets the actual use requirements. By comparing the real-time image with the above pre-trained data set, the machine can quickly and accurately identify the end of the rice field;

[0028] At the same time, the electromagnetic inductor located above the manipulator of the transplanter will also detect the stop of the manipulator. When the manipulator has stopped moving for 10 seconds and the industrial camera detects that it is within the range of the end of the rice field, it will transmit communication to the STM32 single-chip microcomputer through the microcomputer in the control box to prepare the film cutting instruction;

[0029] c. After the film cutting instruction is issued, the STM32 single-chip microcomputer first detects whether the film cutting knife is in the initial position through the infrared sensor. If it is not in the initial position, the indicator light above it will flash red light to report an error through the single-chip microcomputer, avoiding the situation of mistakenly damaging or damaging the film and the film cutting knife. When the detection is correct, the STM32 single-chip microcomputer will cut the film according to the manually set film cutting speed.

[0030] That is, the control box transmits electrical signals to the stepper motor, which drives the conveyor belt transmission, and the conveyor belt drives the cutting knife to slide and cut the degradable film.

[0031] The beneficial effects of the application are: through the setting of the film spreading shaft, the film pressing roller and the edge pressing wheel, the degradable film is covered on the soil, and the degradable film is stretched and tightened in a pulling manner, in addition, the black film surface is subjected to tension in the front and rear directions, and the width direction is naturally expanded and uniformly distributed on the surface of the film placing shaft and the cutting film roller, and the edge of the degradable film is pressed into the soil by the action of the edge pressing wheel, so that the degradable film is quickly covered and fixed at the same time, thereby ensuring the film covering effect; through the setting of the collecting device, the environmental data of the rice film covering and transplanting machine is monitored in real time, the transmission information is collected, and when the machine frame reaches the end point of the rice field, the signal is transmitted to the cutting structure in time, so that the cutting structure drives the film cutting knife to cut the degradable film, thereby improving the film cutting efficiency; through the setting of the conveying belt, the film cutting knife is conveniently driven to slide, and the supporting wheel is set to support the upper belt, and through the setting of the infrared sensor, the infrared sensor is placed at the initial position of the film cutting knife when cutting, when the infrared sensor does not detect the film cutting knife, an alarm will be issued, avoiding the situation of mistakenly hurting and damaging the film and the film cutting knife. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 It is a structure perspective view of the application;

[0033] Fig. 2 It is a rear view schematic view of the structure of the application;

[0034] Fig. 3 It is a perspective view of the film cutting knife;

[0035] In the figure:

[0036] 1, display screen, 2, battery, 3, control box, 4, information interface, 5, film placing shaft, 6, edge pressing wheel, 7, stepping motor, 8, film pressing roller, 9, film cutting knife, 10, film cutting block, 11, conveying belt, 12, film spreading shaft, 13, roller, 14, machine frame, 15, first connecting plate, 16, second connecting plate, 17, fourth connecting plate, 18, third connecting plate, 19, industrial camera, 21, connecting frame, 22, infrared sensor, 23, U-shaped rod, 24, electromagnetic sensor, 25, second positioning hole. DETAILED DESCRIPTION

[0037] In order to clearly illustrate the technical features of the present application, the present application will be described below through specific embodiments.

[0038] Referring to the drawings Figs. 1-3The present invention discloses a film-covering and film-cutting system suitable for biodegradable films and its usage method. The system includes a frame 14 connected to a rice film-covering transplanter, a film-spreading shaft 12 for the biodegradable film to pass through sequentially, a film-pressing roller 8, and a pressing wheel 6. The film-pressing roller 8 is in contact with the soil. There are two pressing wheels 6, which are arranged along the width direction of the biodegradable film and extend into the soil.

[0039] The frame 14 is also axially connected to a film placement shaft 5 located behind the film spreading shaft 12 and used to support the biodegradable film roll. The two ends of the film placement shaft 5 are respectively axially connected to two first connecting plates 15. The first connecting plates 15 are provided with a plurality of first positioning holes arranged along the height direction. The frame 14 is provided with a first pin that is inserted into the first positioning hole.

[0040] The two ends of the film spreading shaft 12 are respectively axially connected to two second connecting plates 16. The second connecting plates 16 are provided with a plurality of second positioning holes arranged along the height direction. The frame 14 is provided with a second pin that is inserted into the second positioning hole.

[0041] The two ends of the pressing roller 8 are respectively shafted onto two fourth connecting plates 17, which are bolted to the frame 14.

[0042] The frame 14 is also provided with a film cutting block 10 located between the film spreading shaft 12 and the film pressing roller 8. The two ends of the cutting block are fixedly connected to two third connecting plates 18 respectively. The third connecting plates 18 are connected to the frame 14 by bolts.

[0043] The film cutting block 10 has a through hole for the biodegradable film to pass through. The film cutting block 10 also has a sliding hole located above the through hole. The sliding hole extends along the width direction of the biodegradable film and passes through the film cutting block 10 along the film coating direction. The top surface of the cutting module also has a groove extending downward and communicating with the sliding hole and the through hole. A cutting blade is provided in the groove. The film cutting blade 9 is inserted into the groove from above and extends into the through hole. A sliding rod inserted into the sliding hole is fixed to the film cutting blade 9. That is, the film cutting blade 9 slides to cut the biodegradable film along the width direction of the biodegradable film.

[0044] The frame 14 is also equipped with a cutting structure that drives the film cutting knife 9 to slide. The cutting structure includes a conveyor belt 11 that conveys along the sliding direction of the film cutting knife 9, a stepper motor 7 that drives the conveyor belt 11 and is electrically connected to the acquisition device, and a support wheel that supports the belt on the conveyor belt 11 is also axially connected to the film cutting knife 9. The lower belt of the conveyor belt 11 is detachably connected to the film cutting knife 9. A detection block located at the initial position of the film cutting knife is also fixed on the frame. The detection block is inverted U-shaped, and the support wheel is inserted into the detection block. An infrared sensor is provided on the inner side wall of the detection block. The infrared sensor is used to detect whether the support wheel is in the initial position, that is, to detect the initial position of the film cutting knife.

[0045] The rack 14 is also provided with a collection device electrically connected to the cutting structure and collecting the position information of the rack 14. The collection device includes an industrial camera and an electromagnetic sensor arranged on the connecting frame 21. The industrial camera is provided with two and faces the advancing direction. The electromagnetic sensor is provided with a plurality of electromagnetic sensors arranged along the width direction of the degradable film. The electromagnetic sensor is located in front of the edge roller. The rack is also provided with a U-shaped rod extending forward and fixing the electromagnetic sensor. The electromagnetic sensor is used to detect the movement of the mechanical hand, so as to upload the real-time situation to the control box. The mechanical hand is installed on the transplanter. When the film is covered, the mechanical hand will move.

[0046] The industrial camera 19 takes real-time images when advancing and uploads them to the control module in the control box 3. The control module has a large amount of picture information collected in the field in advance, with a rich sample data set. Then, the original data set is preliminarily processed through image processing technology, so that the features of the end of the field have strong contrast, facilitating further accurate identification of the features of the end of the field. Next, through the deep learning model based on YOLO v8 after training, a horizontal line representing the end of the rice field is fitted in the picture of the end of the field, and after verification by the verification set, it is concluded that the fitting degree meets the actual use requirements. By comparing the real-time image with the above-mentioned pre-trained data set, the terminal of the machine and the rice field can be quickly and accurately identified.

[0047] The rack 14 is also provided with a control box 3, a display screen 1 electrically connected to the control box 3, and a storage battery 2 for supplying power to the control box 3 and the display screen 1. The control box 3 is also electrically connected to the industrial camera 19 and the stepping motor 7. The control box 3 is provided with an information interface 4. The control box 3 receives information from the industrial camera 19 and the electromagnetic sensor through the information interface 4. The control box 3 is provided with a microcomputer. The microcomputer communicates with an STM32 single-chip microcomputer. The STM32 single-chip microcomputer is electrically connected to an infrared sensor 22. The STM32 single-chip microcomputer is also electrically connected to an indicator light located on the rack. The indicator light flashes red to report an error. The STM32 single-chip microcomputer is also electrically connected to the stepping motor.

[0048] The storage battery 2 is also connected to the stepping motor 7. The display screen 1 is a touch screen, which can realize man-machine interaction.

[0049] A use method of a film covering and cutting system suitable for degradable film, comprising the following steps:

[0050] a、When the rice film mulching and transplanting machine is performing film mulching work, the degradable film roll is placed on the film placing shaft 5, and the stretched degradable film rotates in turn through the film spreading shaft 12, the film cutting block 10, the film pressing roller 8 and the edge pressing wheel 6. The film pressing roller 8 fully adheres the degradable film to the soil, and the edge pressing wheel 6 extrudes the two edges of the degradable film under the soil. The degradable film is stretched and tightened by pulling, and in addition, the surface of the degradable film is naturally expanded in the width direction under the tension in the forward and backward directions, and is uniformly distributed on the surface of the film spreading shaft 12, the film placing shaft 5, the film cutting groove and the film pressing roller 8;

[0051] When the rice film mulching and transplanting machine moves forward for work, the degradable film has a backward pulling force after being covered on the soil, thereby driving the film placing shaft 5 to rotate in the opposite direction of the wheels of the rice film mulching and transplanting machine, so that the degradable film is conveyed. As the rice film mulching and transplanting machine starts to move forward for film mulching, the degradable film can be covered on the rice field to achieve the purpose of film mulching.

[0052] b、When approaching the end of the rice field, the industrial camera 19 located at the front end of the rice film mulching and transplanting machine takes real-time images during forward movement and uploads them to the control module in the control box 3. The control module has a large amount of collected picture information at the end of the field beforehand, with a rich sample data set. Then, the original data set is preliminarily processed through image processing technology, so that the characteristics of the end of the field have a strong contrast, facilitating further accurate identification of the characteristics of the end of the field. Next, through the deep learning model based on YOLO v8 after training, a horizontal line representing the end of the rice field is fitted in the picture at the end of the field, and after verification by the verification set, it is concluded that the fitting degree meets the actual use requirements. By comparing the real-time image with the above-mentioned pre-trained data set, rapid and accurate identification of the end of the machine and the rice field can be achieved.

[0053] Meanwhile, the electromagnetic inductor 24 located above the mechanical hand of the rice film mulching and transplanting machine also detects the stop of the mechanical hand. When the mechanical hand stops moving for 10 seconds and the industrial camera 19 also detects that it is within the range of the end of the rice field, it will transmit communication to the STM32 single-chip microcomputer through the microcomputer in the control box 3 to prepare for film cutting instructions.

[0054] c、After the film cutting instruction is issued, the STM32 single-chip microcomputer first detects whether the film cutting knife 9 is in the initial position through the infrared sensor 22. If it is not in the initial position, the indicator light above it will flash red light to report an error through the single-chip microcomputer, avoiding the situation of mistakenly damaging or damaging the film and the film cutting knife. When the detection is correct, the STM32 single-chip microcomputer will cut the film according to the manually set film cutting speed.

[0055] That is, the STM32 single-chip microcomputer 3 transmits an electrical signal to the stepping motor 7, which drives the conveyor belt 11 to drive the cutting knife to slide and cut the degradable film.

[0056] The display screen 1 located above the control box 3 can manually set parameters, adjust the operation of the rice film mulching and transplanting machine, and can perform human-computer interaction. The industrial camera 19, the infrared distance sensor 20, the display screen 1 and the control box 3 are connected with the storage battery 2, and power support is given, so that the functions of identification and detection are realized in operation.

[0057] The traditional film cutter needs to use a knife to cut the film manually, which is extremely inefficient and depends on the manual skills and speed of the operator. In large-area rice field operations, it significantly increases the operation time, thereby affecting the overall efficiency of the farmland management. The advantage of the present application is that the end point of the rice field is identified by the acquisition device to realize the automatic film cutting function, solving the problem of low working efficiency of the rice film mulching and transplanting machine in the past and improving the intelligent level.

[0058] The system effectively solves the problems of low efficiency and high labor intensity of manual film cutting. After using the device, the operator does not need to move frequently and bend for a long time in the field, greatly reducing the burden of physical labor, especially in bad weather conditions, which is particularly important.

[0059] Using a knife to cut the film has certain safety hazards, and improper operation may cause cutting injury, especially in poor visibility or complex operating conditions. In addition, this method may also cause uneven film covering and inaccurate use of film material, resulting in waste.

[0060] When using the present application, the system can more accurately control the cutting and laying of the film material, thereby improving the quality and uniformity of the film covering, helping to ensure the stability and controllability of the growth environment of crops, such as moisture retention and temperature control, thereby improving the growth quality and yield of crops.

[0061] Manual film cutting can easily lead to uneven or irregular film covering, further affecting the growth environment of crops, such as moisture retention and temperature control, thereby reducing the growth quality and yield of crops.

[0062] The system has the characteristics of strong adaptability and simple operation, which can meet the needs of different operating conditions, such as different field environments and film material characteristics, so that farmers can easily operate even if their technical level is not high. Due to the consistency of film cutting, each cutting can maintain the same quality and precision, maximizing the use of each piece of film material and reducing the waste of time caused by irregular or uneven cutting. The neat and consistent film cutting ensures the optimal use of film material, reduces material waste and reduces overall cost. The neat cutting makes subsequent film covering operations more convenient, and the subsequent film material can be easily and accurately connected to the previous film material. Due to the consistent film cutting, the overall film covering quality of the farmland is improved, which helps to maintain moisture, control temperature and control weeds, ultimately improving the yield and quality of crops

[0063] Of course, the above description is not limited to the above examples, and the technical features of the application not described can be implemented by or using the prior art, which will not be described here; the above examples and drawings are only used to illustrate the technical solutions of the application and are not a limitation on the application, and the application has been described in detail with reference to the preferred embodiments, and those skilled in the art should understand that changes, modifications, additions or substitutions made by those skilled in the art within the essential scope of the application do not deviate from the purpose of the application, and should also belong to the protection scope of the claims of the application.

Claims

1. A film-cutting system suitable for biodegradable films, comprising a frame (14) connected to a rice film-cutting transplanter, characterized in that: It also includes a film spreading shaft (12), a film pressing roller (8), and a pressing wheel (6) for the biodegradable film to pass through in sequence. The frame (14) is also provided with a film cutting knife (9) that slides along the width direction of the biodegradable film, a cutting structure that drives the film cutting knife (9) to slide, and a collection device for collecting the position information of the frame (14). The cutting structure includes a conveyor belt (11) that slides along the cutting blade (9), a stepper motor (7) that drives the conveyor belt (11) and is electrically connected to the acquisition device, a support wheel that supports the belt on the conveyor belt (11) is also axially connected to the cutting blade (9), the lower belt of the conveyor belt (11) is detachably connected to the cutting blade (9), and an infrared sensor for detecting the support wheel is also provided on the frame; The acquisition device includes two industrial cameras (19) mounted on the frame (14) and facing the forward direction, and an electromagnetic sensor extending in front of the pressing wheel and detecting the movement of the rice transplanter manipulator. By setting up a data acquisition device, the environmental data of the rice mulching transplanter can be monitored in real time, information can be collected and transmitted, and when the machine reaches the end point of the paddy field, the signal can be transmitted to the cutting structure in a timely manner, so that the cutting structure can drive the film cutting blade to cut the biodegradable film, thereby improving the film cutting efficiency.

2. The coating and cutting system for biodegradable membranes according to claim 1, characterized in that: The frame (14) is also provided with a film cutting block (10) located between the film spreading shaft (12) and the film pressing roller (8). The film cutting block (10) has a through hole for the biodegradable film to pass through. The film cutting knife (9) slides on the cutting block and extends into the through hole.

3. The coating and cutting system for biodegradable membranes according to claim 1, characterized in that: The pressing roller (8) is in contact with the soil. There are two pressing wheels (6), which are arranged along the width of the biodegradable film and extend into the soil.

4. The coating and cutting system for biodegradable membranes according to claim 1, characterized in that: The frame (14) is also equipped with a control box (3), a display screen (1) electrically connected to the control box (3), and a battery (2) that supplies power to the control box (3) and the display screen (1). The control box (3) is also electrically connected to the industrial camera (19), the electromagnetic sensor, and the stepper motor.

5. The coating and cutting system for biodegradable membranes according to claim 4, characterized in that: The frame (14) is also axially connected to a film placement shaft (5) located behind the film spreading shaft (12) and used to support the biodegradable film roll.

6. The coating and cutting system for biodegradable membranes according to claim 5, characterized in that: The two ends of the film placement shaft (5) are respectively axially connected to two first connecting plates (15). The first connecting plates (15) are provided with a plurality of first positioning holes arranged along the height direction. The frame (14) is provided with a first pin that is inserted into the first positioning hole. The two ends of the film spreading shaft (12) are respectively axially connected to two second connecting plates (16). The second connecting plates (16) are provided with a plurality of second positioning holes arranged along the height direction. The frame (14) is provided with a second pin that is inserted into the second positioning hole.

7. The coating and cutting system for biodegradable membranes according to claim 2, characterized in that: The cutting block (10) is also provided with a sliding hole extending along the width direction of the biodegradable film. The cutting blade (9) is fixed with a sliding rod inserted into the sliding hole. The cutting block is also provided with a groove communicating with the sliding hole and the through hole. The cutting blade (9) is inserted into the groove and extends into the through hole.

8. The method of using the coating and cutting system for biodegradable films according to claim 6, characterized in that, Includes the following steps: a. When the rice mulching transplanter is performing mulching work, the biodegradable film roll is placed on the film placement shaft (5), and the biodegradable film is stretched and rotated through the film spreading shaft (12), the film cutting block (10), the film pressing roller (8) and the edge pressing wheel (6) in sequence. The film pressing roller fully adheres the biodegradable film to the soil, and the edge pressing wheel squeezes the two sides of the biodegradable film under the soil. When the rice mulching transplanter moves forward, the biodegradable film has a backward pulling force after being covered by the soil, which drives the film placement shaft to rotate in the opposite direction to the rice mulching transplanter wheels, so that the biodegradable film begins to be covered as the rice mulching transplanter moves forward, and the biodegradable film can be covered on the paddy field to achieve the purpose of mulching. b. When approaching the end of the rice field, the industrial camera (19) at the front of the rice mulching transplanter captures real-time images of the machine moving forward and uploads them to the control module in the control box (3). The control module contains a large number of field head images collected in advance, and has a rich sample dataset. Then, the original dataset is preliminarily processed by image processing technology to make the features of the field head have a strong contrast, which facilitates the accurate identification of the features of the field head. Next, after training with a deep learning model based on YOLO v8, a model is developed that can fit a horizontal line in the field head image to represent the end of the rice field. After verification with the validation set, it is concluded that the fitting degree meets the actual use requirements. By comparing the real-time images with the pre-trained dataset, it is possible to quickly and accurately identify the machine and the rice field terminal. At the same time, the electromagnetic sensor (24) located above the robot arm of the rice transplanter will also detect that the robot arm has stopped moving. When the robot arm stops moving for 10 seconds and the industrial camera (19) also detects that it is within the range of the end of the paddy field, it will transmit communication to the STM32 microcontroller through the microcomputer in the control box (3) to prepare the film cutting instruction. c. After the film cutting command is issued, the STM32 microcontroller first uses the infrared sensor (22) to detect whether the film cutting knife (9) is in the initial position. If it is not in the initial position, the indicator light above it will flash red to report an error through the microcontroller, thus avoiding accidental damage to the film and the film cutting knife. When the detection is correct, the STM32 microcontroller will cut the film according to the film cutting speed set manually. That is, the control box (3) transmits the electrical signal to the stepper motor (7), the stepper motor (7) drives the conveyor belt (11) to drive the conveyor belt (11) to slide and cut the biodegradable film.

Images