A film wrapping detection system and method for a cotton baler

Abstract

The present application discloses a film wrapping detection system and method for a cotton baler. The film wrapping detection system includes an electromagnetic clutch, a film covering speed measurement sensor, a characteristic label detection device, a cotton film detection sensor, an edge feature detection device, a baling speed measurement sensor, an interactive display screen, etc. The electromagnetic clutch is located on the side of the film covering mechanism; the film covering speed measurement sensor is used to measure the feeding speed of the cotton film of the baling film roll; the characteristic label detection device is used to detect the characteristic label at the tail of the cotton film; the cotton film detection sensor is used to detect the feeding characteristics of the cotton film; the edge feature detection device is used to detect the edge features of the cotton bale; the baling speed measurement sensor is used to detect the running speed of the baling belt of the baler; the interactive display screen is used to display various working parameters of the cotton baler, set delay parameters, etc. The present application can realize the synchronous detection of the cotton film packaging situation during the cotton baling operation, discover problems such as cotton film jamming and abnormal film wrapping, and handle them.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural intelligent equipment, and in particular, to a cotton baling machine coating detection system and method. Background Art

[0002] Cotton is an important economic crop in the world. It is also an important strategic material and raw material for the textile industry that concerns the national economy and people's livelihood. It occupies an important position in economic development.

[0003] At present, the traditional box-type cotton scattering machine is gradually replaced by the baling cotton picker with the function of compacting and baling seed cotton. The baling cotton picker can feed the harvested seed cotton into the circular baling cavity during the harvesting operation. The seed cotton is compacted and coiled to form a cylindrical cotton core, and then it is formed into a cotton bale after multiple layers of coiling and film coating. The maximum diameter of the cylindrical cotton bale produced exceeds two meters and the weight is close to two tons, which can significantly improve the storage and transportation efficiency and reduce the transportation cost. The quality of cotton after coating is not affected by weather changes, and it can also prevent fires and effectively prevent foreign fibers from mixing. The round bales are easy to move and stack, occupy a small space and have no special storage and transportation requirements. Seed cotton baling has outstanding advantages, and its advancedness and practicality have been recognized by production practice. It is an important direction for the development of cotton harvesting.

[0004] The packaging machine has a strong closed structure, and it is difficult to directly observe the packaging of the internal cotton bales. The existing packaging detection technology is not perfect, and the detection method is simple. The current technologies mainly include the following: 1. Use the RFID module or photoelectric switch at the bottom of the film coating mechanism to detect the characteristic tag at the tail of the cotton film, then delay the cotton film feeding action, and determine that the cotton core has completed the film coating, and the cotton bale in the packaging box can be expelled, but there is a problem of not being able to detect whether the cotton film has entered the packaging machine. 2. Use the color sensor in the packaging machine to detect the color characteristics of the cotton bale edge. When the color characteristics of the cotton film are detected, the film coating is determined to be normal, but there is a problem of misrecognition without combining the cotton film packaging length, and it cannot be determined whether the cotton film is normally disconnected. In addition to the above defects, the existing method cannot determine the smoothness of the film head entering the baler, cannot detect the reasonableness of the tail film position, and often cannot timely detect the blockage, deviation, and tearing of the cotton film caused by inappropriate cotton film size specifications, inappropriate film breaking delay, or film feeding mechanism failure. In such abnormal situations, when the baler ejects the cotton bales, it spits out tons of loose cotton that has not been packaged, which poses a great safety hazard, takes up a lot of personnel cleaning time, and seriously affects the harvesting efficiency of the equipment. When the ejected cotton bales are damaged and loose, it is difficult to put them in the baler for re-wrapping, which affects the storage and transportation of cotton bales.

[0005] In summary, in view of the above problems faced in the process of harvesting and packing unginned cotton, it is very necessary to study an envelope detection system and method for a cotton baler that can synchronously detect the packing effect of cotton bales, protect the safety of personnel, save packing cotton film, and ensure the harvesting operation efficiency during the packing process. Summary of the Invention

[0006] On the one hand, the present application provides an envelope detection system for a cotton baler to solve the technical problems in the prior art that it is difficult to synchronously detect the packing effect of cotton bales, protect the safety of personnel, save packing cotton film, and ensure the harvesting operation efficiency during the process of harvesting and packing unginned cotton.

[0007] The technical solutions adopted in the present application are as follows:

[0008] An envelope detection system for a cotton baler, the cotton baler includes a baler and a film covering mechanism, including:

[0009] An electromagnetic clutch, located on the side of the film covering mechanism. When the electromagnetic clutch is engaged, the packing film roll rotates with the packing mechanism to feed the cotton film. When it is disengaged, the packing film roll does not rotate with the packing mechanism to feed the cotton film.

[0010] A film covering speed measurement sensor, used to measure the feeding speed of the cotton film of the packing film roll.

[0011] A feature label detection device, arranged at the bottom position of the film covering mechanism, used to detect the feature label at the tail of the cotton film.

[0012] Cotton film detection sensors, arranged in pairs on the left and right sides behind the film inlet at the bottom of the baler, used to detect the feeding characteristics of the cotton film.

[0013] Edge feature detection devices, arranged in pairs on the left and right sides inside the baler, used to detect the edge features of the cotton bale.

[0014] A packing speed measurement sensor, used to detect the running speed of the packing belt of the baler.

[0015] An interactive display screen, used to display various working parameters of the cotton baler, set delay parameters, the number of cotton film sheets, and the packing speed.

[0016] A controller, circuit-connected to the electromagnetic clutch, the film covering speed measurement sensor, the feature label detection device, the cotton film detection sensors, the edge feature detection devices, the packing speed measurement sensor, and the interactive display screen. During the cotton packing operation process, according to the set delay parameters, the number of cotton film sheets, the packing speed, and the detection data of the film covering speed measurement sensor, the feature label detection device, the cotton film detection sensors, the edge feature detection devices, and the packing speed measurement sensor, it is used to monitor in real time whether there is cotton film jamming or abnormal film covering.

[0017] Further, the feature label detection device uses an optoelectronic switch or an RFID signal module.

[0018] Further, the edge feature detection device uses a color mark sensor or a camera.

[0019] On the one hand, the present application provides a film wrapping detection method for a cotton baler. Based on the film wrapping detection system, the method includes the following steps:

[0020] When the film wrapping action is executed, the controller controls the packing hydraulic pump to drive the packing belt to run, and stably adjusts the running speed of the packing belt within the calibrated range during the film wrapping process;

[0021] The controller controls the oil cylinder to raise the film supporting frame, so that the front end of the cotton film fits the packing belt running at the bottom of the baler, stretches and flattens the cotton film, and triggers the signals of the cotton film detection sensors on both sides at the bottom of the baler;

[0022] The controller controls the electromagnetic clutch to engage, so that the film covering roller supporting the packing film roll runs, and the cotton film fits the packing belt and enters the baler. Among them, the running speed of the packing belt is greater than that of the film covering roller and has a certain speed ratio relationship;

[0023] The controller calculates the feeding length of the cotton film based on the signal triggering conditions of the cotton film detection sensors on both sides at the bottom of the baler, combined with the feeding speed and action duration detected by the film covering speed measurement sensor;

[0024] The controller calculates the effective wrapping length of the cotton film based on the signal triggering conditions of the edge feature detection devices on both sides inside the baler, combined with the packing speed signal and action duration detected by the packing speed measurement sensor;

[0025] When the edge feature detection device is in the feeding action execution situation, if the controller does not detect the edge cotton film on the side of the cotton core within the signal triggering interval time, it is determined that the cotton film is stuck and fails to enter the baler. At this time, the film wrapping action is stopped and a warning is given to the driver, reminding to check and maintain and re - execute the film wrapping action after adjustment; otherwise, it is determined that the feeding of the cotton film is normal;

[0026] After the set length of the cotton film packaging, the film supporting frame is controlled to lower. At this time, the front end of the cotton film has tightly wound the cotton core, and the remaining cotton film continues to follow the packing belt to wrap the inner cotton core;

[0027] After the film wrapping action has been carried out for a certain time, if the tail feature label of the cotton film is detected within the reasonable single - sheet cotton film wrapping time, it is determined that the film wrapping is normal; otherwise, it is determined that the film wrapping is abnormal, and the system stops the film wrapping action and gives a warning to the driver;

[0028] After the tail feature label of the cotton film is detected, the controller delays the control to separate the electromagnetic clutch. At this time, the film covering roller supporting the packaging film roll stops rotating, and the packing belt continues to run, so that the folding joint between the current cotton film and the next cotton film is naturally pulled apart to realize the separation of the cotton film;

[0029] The packing hydraulic pump runs with a delay to ensure that the sealing adhesive layer at the tail of the cotton film is closely attached to the cotton film. After the packing belt stops, the cotton bale is ejected according to the operation instruction.

[0030] Further, it also includes the steps:

[0031] Before the equipment leaves the factory, calibrate the operating speed of the baler, and determine the standard operation time of the cotton film packaging process and the delay time for cotton film separation in combination with the specification characteristics of the cotton film.

[0032] Further, the signal triggering interval time is determined according to the installation position relationship of the cotton film detection sensor and the edge feature detection device, and in combination with the feeding speed measured by the film covering speed measurement sensor.

[0033] Further, the reasonable single-piece cotton film packaging time is determined according to the length dimension of the single-piece cotton film, the position of the tail feature label of the cotton film, and in combination with the feeding speed of the cotton film.

[0034] Further, when the controller delays the control to separate the electromagnetic clutch, it also includes the steps:

[0035] Judge whether the length of the next cotton film laid on the film supporting frame meets the needs of the next packaging operation.

[0036] Further, the step of judging whether the length of the next cotton film laid on the film supporting frame meets the needs of the next packaging operation specifically includes the steps:

[0037] The controller obtains the length of the next cotton film laid on the film supporting frame according to the time interval when the detection signal of the cotton film detection sensor is re-triggered, in combination with the feeding speed of the cotton film. Among them, when the tail of the previous cotton film is about to enter the baler, the detection signal of the cotton film detection sensor is disconnected; when the next cotton film follows and is laid on the film supporting frame, the detection signal of the cotton film detection sensor is re-triggered, and the interval duration between the disconnection of the detection signal and the re-triggering of the detection signal is the re-triggering time interval;

[0038] Judge whether the film head position of the next cotton film meets the needs of the next packaging operation according to the length of the next cotton film laid on the film supporting frame.

[0039] Further, it also includes the steps:

[0040] During the film wrapping operation, if the signal of the cotton film detection sensor is unstable or the edge feature detection device detects abnormal color signals on the side edges of the cotton core, it is determined that the cotton film has shifted or the cotton bale is damaged. At this time, the workflow still proceeds downward, but before the cotton bale is finally ejected, the operator is reminded to check and the cotton bale is directly ejected according to the on-site working conditions.

[0041] Or,

[0042] Accept manual control by the operator to re-execute the packing operation and re-cover the cotton core with the film.

[0043] Compared with the prior art, the present application has the following beneficial effects:

[0044] (1) The technical solution proposed in the present application can realize the synchronous detection of the cotton film packaging situation during the cotton bale packing operation, and can timely detect and handle problems such as cotton film jamming and abnormal film wrapping. There is no need to eject the cotton bale first and then judge the film wrapping, which makes up for the deficiencies of the existing detection technology, significantly improves the packing detection level of domestic equipment, reduces the failure rate of cotton bale packing, improves the safety and harvesting efficiency of the cotton harvesting and packing operation of agricultural machinery, and reduces the economic losses of cotton farmers.

[0045] (2) The operation process of the present application has a high degree of automation, is safe, convenient and flexible in operation, greatly reduces the operation difficulty of the operator during the unginned cotton packing operation, protects the personal safety at the same time, and ensures the film wrapping quality.

[0046] (3) When the electromagnetic clutch is engaged in the present application, the running speed of the packing belt of the packer and the running speed of the film covering roller supporting the cotton packing film roll always have a certain speed ratio relationship, which can realize the elastic wrapping of the cotton film on the cotton core, and the packaging is tighter and not easy to loosen, meeting the market demand for multiple transfers and long-term stacked storage.

[0047] (4) When the cotton film jamming is detected, the system can stop in time, shorten the resumption time, and does not damage the current packing cotton film; when the tail feature label of the cotton film is triggered in advance, the cotton film is not disconnected in advance, causing cotton film damage; when the packing process times out, the film wrapping operation is stopped in time to avoid continuous feeding of the tail film, saving cotton film. For example, the cost of the cotton film is about 700 - 1000 yuan, making the present solution have good economy.

[0048] In addition to the purposes, features and advantages described above, the present application has other purposes, features and advantages. The present application will be further described in detail below with reference to the accompanying drawings. Description of the Drawings

[0049] The accompanying drawings, which form a part of this application, are used to provide a further understanding of this application. The schematic embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation of this application. In the drawings:

[0050] Figure 1 is a schematic structural principle diagram of the film wrapping detection system of the cotton baling machine according to the preferred embodiment of this application.

[0051] Figure 2 is a schematic circuit principle diagram of the film wrapping detection system of the cotton baling machine according to the preferred embodiment of this application.

[0052] Figure 3 is a schematic diagram of the unfolding of a single cotton film used in this application.

[0053] Figure 4 is a schematic structural diagram of the folding joint at the junction of two adjacent cotton films.

[0054] Figure 5 is a schematic flow diagram of the film wrapping detection method of the cotton baling machine according to the preferred embodiment of this application.

[0055] Figure 6 is a schematic flow diagram of the film wrapping detection method of the cotton baling machine according to another preferred embodiment of this application.

[0056] Figure 7 is a schematic sub-step flow diagram of step S10 according to the preferred embodiment of this application.

[0057] Figure 8 is a schematic sub-step flow diagram of step S101 according to the preferred embodiment of this application.

[0058] Figure 9 is a schematic flow diagram of the film wrapping detection method of the cotton baling machine according to another preferred embodiment of this application.

[0059] Figure 10 is a schematic diagram of the electronic device entity according to the preferred embodiment of this application.

[0060] Figure 11 is a schematic diagram of the composition of the computer device according to the preferred embodiment of this application.

[0061] As shown in the figure: 1. electromagnetic clutch; 2. packing film roll; 3. film covering speed measurement sensor; 4. photoelectric switch; 5. cotton film detection sensor; 6. film supporting frame; 7. edge folding device; 8. color mark sensor; 9. packing belt; 10. packing speed measurement sensor; 11. non-sticky layer at the film head; 12. sticky layer at the film tail; 13. characteristic label at the cotton film tail; 14. cotton film tail; 15. cotton film head. Detailed implementation manners

[0062] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0063] As Figure 1 and Figure 2 shown, a preferred embodiment of the present embodiment provides a film wrapping detection system for a cotton baler. The cotton baler includes a baling device and a film covering mechanism. The baling device winds the fed cotton into a cylindrical cotton core through multiple groups of baling belts 9 inside. The film covering mechanism controls the start and stop of the cotton film feeding through an electromagnetic clutch 1. The cotton film enters the packing cavity along the bottom of the baling device through the film inlet, and after being folded by the edge folding device 7, it realizes the film wrapping of the cotton core in the packing cavity. The film wrapping detection system includes an electromagnetic clutch 1, a film covering speed sensor 3, a feature label detection device, a cotton film detection sensor 5, an edge feature detection device, a baling speed sensor 10, an interactive display screen, and a controller, where:

[0064] The electromagnetic clutch 1 is located on the side of the film covering mechanism. When the electromagnetic clutch 1 is engaged, the packing film roll 2 rotates with the packing mechanism to feed the cotton film. When it is disengaged, the packing film roll 2 does not rotate with the packing mechanism to feed the cotton film;

[0065] The film covering speed sensor 3 is used to measure the feeding speed of the cotton film of the packing film roll 2;

[0066] The feature label detection device is arranged at the bottom position of the film covering mechanism and is used to detect the feature label at the tail of the cotton film. The feature label detection device uses a photoelectric switch 4 or an RFID signal module. In this embodiment, the photoelectric switch 4 with lower cost is adopted;

[0067] The cotton film detection sensors 5 are arranged in pairs on the left and right sides behind the film inlet at the bottom of the baling device and are used to detect the cotton film feeding features, including;

[0068] The edge feature detection devices are arranged in pairs on the left and right sides inside the baling device and are used to detect the cotton bale edge features. The edge feature detection device uses a color mark sensor 8 or a camera. In this embodiment, the color mark sensor 8 with lower cost is adopted, including a left color mark sensor and a right color mark sensor;

[0069] The baling speed sensor 10 is used to detect the running speed of the baling belts 9 of the baling device;

[0070] The interactive display screen is used to display various working parameters of the cotton baler, set delay parameters, the number of cotton films, and the baling speed;

[0071] The controller is electrically connected to the electromagnetic clutch 1, the film covering speed sensor 3, the feature label detection device, the cotton film detection sensor 5, the edge feature detection device, the packing speed sensor 10, and the interactive display screen, and is used to monitor in real time whether there is cotton film jamming or abnormal film covering during the cotton packing operation according to the set delay parameters, the number of cotton films, the packing speed, and the detection data of the film covering speed sensor 3, the feature label detection device, the cotton film detection sensor 5, the edge feature detection device, and the packing speed sensor 10.

[0072] Figure 2 In the [description], a vehicle-mounted controller is mainly used as the controller of the film covering detection system for data processing and instruction output; a hydraulic cylinder is used as the actuator of the system to control its extension and contraction to realize the lifting action of the film support frame and the opening and closing actions of the packing box body; a hydraulic pump and a motor are used as the actuators of the system to control the operation of the packing belt 9; an interactive display screen is used as the display to realize the setting of the number of cotton films, action delay, and display of various parameters of the film covering detection system; and an armrest box is involved in the action control of the film covering detection system.

[0073] During the execution of the film covering action, the packing belt 9 runs at the set speed, the film support frame 6 rises to make the film head of the packing film roll 2 close to the packing belt 9, and then the electromagnetic clutch 1 engages to control the cotton film on the packing film roll 2 to pass through the photoelectric switch 4 and the cotton film detection sensor 5 with the packing belt 9 and enter the packing cavity. The folding device 7 folds and edges both sides of the cotton film. The color mark sensor 8 detects the edge wrapping situation of the cotton core. After the cotton film enters the packing cavity, the film support frame 6 delays in falling. After the photoelectric switch 4 detects the cotton film tail feature label 13 at the tail 14 of the cotton film, the electromagnetic clutch 1 delays in disengaging to lay an appropriate length of the cotton film tail 14 on the film support frame 6. The packing film roll 2 stops feeding, and the packing belt 9 continues to run with a delay to drive the fed cotton film, separate it from the tail film at the joint, and ensure that the film tail adhesive layer 12 at the tail 14 of the cotton film is firmly adhered. Among them, in this embodiment, there are 24 cotton films in one roll of film, only one cotton film is required for one cotton bale, and there is a white cotton film tail feature label 13 at the tail of each cotton film. The cotton film tail 14 of the previous cotton film is connected to the cotton film head 15 of the next cotton film and is very brittle. When the photoelectric switch 4 detects the white cotton film tail feature label 13 at the tail of the previous film, the electromagnetic clutch 1 delays in disconnecting and does not feed film into the packer, but the packing belt 9 will also delay in disconnecting for a longer period of time, so as to tear and separate the previous film and the next film.

[0074] The cotton film detection sensor 5 is specifically a reflection-diffusion type photoelectric switch with the ability to detect transparent substances; the color mark sensor 8 can effectively detect the color characteristics of white cotton and differently colored bale cotton films. By combining the signals of the film covering speed sensor 3 and the cotton film detection sensor 5, the feeding length of the next cotton film is calculated to determine the position of the cotton film head 15 of the next cotton film. Among them, when the system detects the cotton film tail feature label 13, the feeding delay stops. At this time, it is judged whether the cotton film head 15 of the next cotton film reaches the correct position range. Assuming that the duration when the cotton film detection sensor 5 is re-triggered is t1, combined with the film covering speed, the feeding film length can be calculated to judge whether there is jamming (smoothness) when the cotton film enters the baler. If the time is short, the position of the cotton film head 15 is relatively backward; if the time is long, the position of the cotton film head 15 is relatively forward; by combining the packing speed sensor 10 and the color mark sensor 8, the cotton film packing length is calculated. The color mark sensor 8 has two functions. One is to inspect the edge wrapping situation of the cotton bale, and the other is to serve as a flag bit. When the color mark sensor 8 is triggered, timing starts. When the system detects the cotton film tail feature label 13, the timing ends. According to the packing belt speed and duration, the length of the cotton film is calculated, and it can also compare whether there is film feeding jamming by comparing the trigger time length of the color mark sensor 8 after the electromagnetic clutch 1 works.

[0075] Figure 3 This is a schematic diagram of the cotton film unfolding used in the present invention. The front end of the cotton film is relatively narrow, suitable for the winding width of the baler belt, and can fit the baling belt to drive the cotton film to smoothly enter the baler; the middle part of the cotton film is relatively wide and unfolds and closes in a trapezoidal shape to realize the edge wrapping of the cotton core. The cotton film detection sensor 5 and the color mark sensor 8 in this application detect based on this side wing part of the cotton film. Currently, yellow cotton films are basically used in the market to wrap cotton into a cylinder, and the circular surfaces on both sides of the cylinder need film edge wrapping. A color mark sensor that can detect yellow can be installed at a fixed position to detect whether the cotton bale is edge-wrapped. If the color mark sensor 8 is not triggered during the cotton film covering process, it proves that the edge wrapping situation is not good and there is film feeding jamming. The cotton film tail 14 is provided with a light-shielding cotton film tail feature label 13 and a film tail adhesive layer 12. The photoelectric switch 4 in this application detects based on the cotton film tail feature label 13. This application can ensure that when the front end of the cotton film tail 14 can be laid on the film support 6 for 1.2 - 1.5 meters after the cotton film joint is disconnected, the cotton film detection sensor 5 can detect the cotton film side wing feature.

[0076] Figure 4Schematic diagram of a folding joint structure at the connection between two adjacent cotton films. The cotton film tail 14 of the previous cotton film is coated with a film tail adhesive layer 12 for wrapping the cotton bale. The film head non - adhesive layer 11 coated with silicone oil on the cotton film head 15 of the adjacent next cotton film faces the part of the film tail adhesive layer 12 of the cotton film tail 14 of the adjacent previous cotton film. The film tail adhesive layer 12 and the film head non - adhesive layer 11 can be pulled apart by an external force. A certain number of cotton films are connected and wound around the core tube in the above - mentioned manner to form a packing film roll 2. Since the film tail adhesive layer 12 of the cotton film cannot be directly fixed on the core tube, it is necessary to wind a non - adhesive layer base film around the core tube for a section and fold - connect the last cotton film, but this base film is not sufficient to wrap the cotton bale.

[0077] As Figure 5 shown, on the one hand, the present application provides a method for detecting the film wrapping of a cotton baler. Based on the above - mentioned film wrapping detection system, it includes the steps:

[0078] S2. When the film wrapping operation is executed, the controller controls the packing hydraulic pump to drive the packing belt 9 to operate, and stably adjusts the operating speed of the packing belt 9 within the calibrated range during the film wrapping process;

[0079] S3. The controller controls the oil cylinder to raise the film support frame 6, so that the front end of the cotton film fits the packing belt 9 running at the bottom of the baler, stretches and flattens the cotton film, and triggers the signals of the cotton film detection sensors 5 on both sides at the bottom of the baler;

[0080] S4. The controller controls the electromagnetic clutch 1 to engage, so that the film - covering roller supporting the packing film roll 2 operates, and the cotton film fits the packing belt 9 and enters the baler. Among them, the operating speed of the packing belt 9 is greater than the operating speed of the film - covering roller and has a certain speed ratio relationship;

[0081] S5. The controller calculates the feeding length of the cotton film by triggering the signals of the cotton film detection sensors 5 on both sides at the bottom of the baler, and combining the feeding speed and action duration detected by the film - covering speed - measuring sensor 3;

[0082] S6. The controller calculates the effective wrapping length of the cotton film by triggering the signals of the edge feature detection devices on both sides inside the baler, and combining the packing speed signal and action duration detected by the packing speed - measuring sensor 10;

[0083] S7. When the edge feature detection device is in the feeding operation, if the controller does not detect the edge - wrapping cotton film on the side of the cotton core within the signal - triggering interval time range, it is determined that the cotton film is stuck and fails to enter the baler. At this time, the film wrapping operation is stopped and a warning is given to the driver, reminding to check and maintain, and then restart the film wrapping operation after adjustment; otherwise, it is determined that the feeding of the cotton film is normal;

[0084] S8. After setting the specified length of the cotton film packaging, control the film support frame 6 to lower. At this time, the front end of the cotton film has tightly wound around the cotton core, and the remaining cotton film continues to follow the packing belt 9 to wrap the cotton core inside;

[0085] S9. After the film wrapping operation has been carried out for a certain period of time, if the characteristic label at the tail of the cotton film is detected within the reasonable single-piece cotton film wrapping time, it is determined that the film wrapping is normal; otherwise, it is determined that the film wrapping is abnormal, the system stops the film wrapping operation and warns the driver;

[0086] S10. After detecting the characteristic label at the tail of the cotton film, the controller delays to control the electromagnetic clutch 1 to disengage. At this time, the film covering roller supporting the packing film roll 2 stops rotating, and the packing belt 9 continues to run, so that the folding joint between the current cotton film and the next cotton film is naturally pulled apart to realize the separation of the cotton films;

[0087] S11. The packing hydraulic pump runs with a delay to ensure that the sealing adhesive layer at the tail of the cotton film is closely attached to the cotton film. After the packing belt 9 stops, the cotton bale is ejected according to the operation instruction.

[0088] Preferably, as Figure 6 shown, the film wrapping detection method of the cotton bale press further includes the steps:

[0089] S1. Before the equipment leaves the factory, calibrate the operating speed of the bale press, and combine with the specifications of the cotton film to determine the standard operation time of the cotton film packaging process and the cotton film separation delay time.

[0090] Preferably, the signal triggering interval time is determined according to the installation position relationship between the cotton film detection sensor 5 and the edge feature detection device, and combined with the feeding speed measured by the film covering speed sensor 3.

[0091] Preferably, the reasonable single-piece cotton film wrapping time is determined according to the length dimension of the single-piece cotton film, the position of the characteristic label at the tail of the cotton film, and combined with the feeding speed of the cotton film.

[0092] Preferably, as Figure 7 shown, when the controller delays to control the electromagnetic clutch 1 to disengage, it further includes the steps:

[0093] S101. Determine whether the length of the next cotton film laid on the film support frame 6 meets the requirements of the next film wrapping operation.

[0094] Preferably, as Figure 8 shown, determining whether the length of the next cotton film laid on the film support frame 6 meets the requirements of the next film wrapping operation specifically includes the steps:

[0095] S1011. The controller obtains the length of the next cotton film laid on the film support 6 based on the time interval of the re-triggering of the detection signal by the cotton film detection sensor 5 and the feeding speed of the cotton film. When the tail of the previous cotton film is about to enter the baler, the detection signal of the cotton film detection sensor 5 is disconnected; when the next cotton film follows and is laid on the film support 6, the detection signal of the cotton film detection sensor 5 is re-triggered, and the interval duration between the disconnection of the detection signal and the re-triggering of the detection signal is the re-triggering time interval.

[0096] S1012. Determine whether the position of the film head of the next cotton film meets the requirements of the next film wrapping operation according to the length of the next cotton film laid on the film support 6.

[0097] Preferably, as Figure 9 shown, the film wrapping detection method of the cotton baler further includes the steps:

[0098] S12. During the film wrapping operation, if the signal of the cotton film detection sensor 5 is unstable or the edge feature detection device detects that the color signal of the side wrapping of the cotton core is abnormal, it is determined that the cotton film is offset or the cotton bale is damaged. At this time, the workflow still proceeds downward, but before the cotton bale is finally ejected, the operator is reminded to check, and the cotton bale is directly ejected according to the on-site working conditions; or, accept the manual control of the operator to re-execute the packing action and re-cover the cotton core with the film.

[0099] As Figure 10 shown, a preferred embodiment of the present application also provides an electronic device, including a memory, a processor, and a computer program stored on the memory and executable on the processor. When the processor executes the program, it implements the steps of the film wrapping detection method of the cotton baler in the above embodiment.

[0100] As Figure 11 shown, a preferred embodiment of the present application also provides a computer device, which can be a terminal or a living body detection server, and its internal structure diagram can be as Figure 11 shown. The computer device includes a processor, a memory, and a network interface connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with other external computer devices through a network connection. When the computer program is executed by the processor, it implements the steps of the film wrapping detection method of the above cotton baler.

[0101] Those skilled in the art can understand, Figure 11The structure shown is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0102] A preferred embodiment of this application also provides a storage medium, which includes a stored program that controls the device where the storage medium is located to execute the steps of the film wrapping detection method of the cotton baler in the above embodiment when the program runs.

[0103] It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. And although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in a different order than here.

[0104] In summary, compared with the prior art, the above embodiments of this application have the following technical advantages:

[0105] (1) The technical solution proposed in this application can realize the synchronous detection of the cotton film packaging situation during the cotton baling operation, and can timely detect and handle problems such as cotton film jamming and abnormal film wrapping. There is no need to eject the cotton bale first and then judge the film wrapping, which makes up for the deficiencies of the existing detection technology, significantly improves the domestic equipment packaging detection level, reduces the cotton baling failure rate, improves the safety and harvesting efficiency of the cotton agricultural machinery harvesting and baling operation, and reduces the economic losses of cotton farmers.

[0106] (2) The operation process of this application has a high degree of automation, is safe, convenient and flexible, greatly reduces the operation difficulty of the operator during the seed cotton baling operation, protects the personal safety at the same time, and ensures the film wrapping quality.

[0107] (3) When the electromagnetic clutch is engaged in this application, the running speed of the baling belt of the baler and the running speed of the film covering roller supporting the cotton film roll always have a certain speed ratio relationship, which can realize the elastic wrapping of the cotton film on the cotton core, and the packaging is tighter and not easy to loosen, meeting the market demand for multiple transfers and long-term stacked storage.

[0108] (4) When the cotton film jamming is detected, the system can stop in time, shorten the resumption time, and does not damage the current packaging cotton film; when the tail feature label of the cotton film is triggered in advance, the cotton film is not disconnected in advance, causing the cotton film to be damaged; when the packaging process times out, the film wrapping action is stopped in time to avoid continuous feeding of the tail film, saving the cotton film. For example, the cost of the cotton film is about 700 - 1000 yuan, making this solution have good economy.

[0109] When the functions described in the method of this embodiment are implemented in the form of software function units and sold or used as independent products, they can be stored in one or more computer-readable storage media. Based on this understanding, the part of this application embodiment that contributes to the prior art or part of this technical solution can be embodied in the form of a software product. This software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, a mobile computing device, or a network device, etc.) to execute all or part of the steps of the methods described in various embodiments of this application. The foregoing storage media include: USB flash drives, mobile hard disks, read-only memories (ROMs), random access memories (RAMs), magnetic disks, or optical discs, etc., which can store program codes of various kinds.

[0110] Those skilled in the art should understand that the embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware aspects. Moreover, this application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk memories, CD-ROMs, optical memories, etc.) containing computer-usable program codes. The solutions in the embodiments of this application can be implemented using various computer languages. For example, object-oriented programming languages such as Java and interpreted scripting languages such as JavaScript.

[0111] This application is described with reference to the flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to the embodiments of this application. It should be understood that each flow and / or block in the flowchart and / or block diagram can be implemented by computer program instructions, and the combination of flows and / or blocks in the flowchart and / or block diagram can also be implemented by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing devices to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing devices generate a device for implementing the functions specified in Figure 1 one flow or multiple flows and / or blocks Figure 1 one block or multiple blocks.

[0112] These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in this computer-readable memory generate a manufactured article including an instruction device, and this instruction device implements the functions in Figure 1 one flow or multiple flows and / or blocks Figure 1The functions specified in one or more boxes.

[0113] These computer program instructions can also be loaded onto a computer or other programmable data processing apparatus, so that a series of operation steps are executed on the computer or other programmable apparatus to generate a computer-implemented process, and thus the instructions executed on the computer or other programmable apparatus provide for implementing steps of the functions specified in one Figure 1 one process or more processes and / or boxes Figure 1 step of the functions specified in one or more boxes.

[0114] Although the preferred embodiments of the present application have been described, those skilled in the art can make additional changes and modifications once they learn the basic creative concepts. Therefore, the appended claims are intended to be construed to include the preferred embodiments as well as all changes and modifications falling within the scope of the present application.

[0115] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A film wrapping detection method for a cotton baler, based on a film wrapping detection system of the cotton baler. The cotton baler includes a baling device and a film covering mechanism, and it includes: A film-coated speed sensor is used to measure the feeding speed of the cotton film of the bale wrapping film roll; A feature label detection device is arranged at the bottom position of the film coating mechanism and is used to detect the feature label at the tail of the cotton film; cotton film detection sensors are arranged in pairs on the left and right sides behind the film inlet at the bottom of the baler and are used to detect the feeding features of the cotton film; Edge feature detection devices are arranged in pairs on the left and right sides inside the baler and are used to detect the edge features of the cotton bale; A bale wrapping speed sensor is used to detect the running speed of the bale wrapping belt of the baler; a controller is used to monitor in real time whether there is cotton film jamming or abnormal film wrapping according to the set delay parameters, the number of cotton film sheets, the bale wrapping speed, the film-coated speed sensor, the feature label detection device, the cotton film detection sensors, the edge feature detection devices and the detection data of the bale wrapping speed sensor during the cotton bale wrapping operation. It is characterized by including the steps: When the film wrapping action is executed, the controller controls the bale wrapping hydraulic pump to drive the bale wrapping belt (9) to run, and stably adjusts the running speed of the bale wrapping belt (9) within the calibration range during the film wrapping process; The controller controls the oil cylinder to raise the film supporting frame (6) so that the front end of the cotton film fits the bale wrapping belt (9) running at the bottom of the baler, stretches and flattens the cotton film, and triggers the signals of the cotton film detection sensors (5) on both sides of the bottom of the baler; The controller controls the electromagnetic clutch (1) to engage, so that the film coating roller supporting the bale wrapping film roll (2) runs, and the cotton film fits the bale wrapping belt (9) and enters the baler. Among them, the running speed of the bale wrapping belt (9) is greater than the running speed of the film coating roller and has a certain speed ratio relationship; The controller calculates the feeding length of the cotton film according to the signal triggering situation of the cotton film detection sensors (5) on both sides of the bottom of the baler, combined with the feeding speed and action duration detected by the film-coated speed sensor (3); The controller calculates the effective wrapping length of the cotton film according to the signal triggering situation of the edge feature detection devices on both sides inside the baler, combined with the bale wrapping speed signal and action duration detected by the bale wrapping speed sensor (10); When the edge feature detection device is in the feeding action execution situation, if the controller does not detect the edge wrapping cotton film on the side of the cotton core within the signal triggering interval time range, it is judged that the cotton film is jammed and fails to enter the baler. At this time, the film wrapping action is stopped and a warning is given to the driver to remind to check and maintain and re-execute the film wrapping action after adjustment; otherwise, it is judged that the cotton film feeding is normal; After the set length of the cotton film packaging, the film supporting frame (6) is controlled to lower. At this time, the front end of the cotton film has formed a tight winding around the cotton core, and the remaining cotton film continues to follow the bale wrapping belt (9) to wrap the inner cotton core; After the film wrapping action has been carried out for a certain time, if the feature label at the tail of the cotton film is detected within the reasonable single-sheet cotton film wrapping time, it is judged that the film wrapping is normal; otherwise, it is judged that the film wrapping is abnormal, and the system stops the film wrapping action and gives a warning to the driver; After detecting the feature label at the tail of the cotton film, the controller controls the electromagnetic clutch (1) to disengage with a delay. At this time, the film coating roller supporting the bale wrapping film roll (2) stops rotating, and the bale wrapping belt (9) continues to run, so that the folding joint between the current cotton film and the next cotton film is naturally pulled apart to realize the separation of the cotton films; The packing hydraulic pump runs with a delay to ensure that the adhesive layer at the tail of the cotton film is closely attached to the cotton film, and the cotton bale is ejected according to the operation instruction after the packing belt (9) stops.

2. The film wrapping detection method for a cotton baler according to claim 1, characterized in that, Previously, it also includes the steps of: Calibrating the running speed of the baler before the equipment leaves the factory, and determining the standard operation time of the cotton film packaging process and the cotton film separation delay time in combination with the specifications and characteristics of the cotton film.

3. The film wrapping detection method for a cotton baler according to claim 1, characterized in that, The signal triggering interval time is determined according to the installation position relationship between the cotton film detection sensor (5) and the edge feature detection device, and in combination with the feeding speed measured by the film covering speed sensor (3).

4. The film wrapping detection method for a cotton baler according to claim 1, characterized in that, The reasonable single-piece cotton film coating time is determined according to the length dimension of the single-piece cotton film, the position of the characteristic label at the tail of the cotton film, and in combination with the feeding speed of the cotton film.

5. The film wrapping detection method for a cotton baler according to claim 1, characterized in that, When the controller delays the control of the electromagnetic clutch (1) to separate, it also includes the steps of: Determining whether the length of the next cotton film laid on the film supporting frame (6) meets the requirements of the next coating operation.

6. The film wrapping detection method for a cotton baler according to claim 5, characterized in that, The determination of whether the length of the next cotton film laid on the film supporting frame (6) meets the requirements of the next coating operation specifically includes the steps of: The controller obtains the length of the next cotton film laid on the film supporting frame (6) according to the time interval of the detection signal of the cotton film detection sensor (5) being re-triggered and in combination with the feeding speed of the cotton film. Among them, when the tail of the previous cotton film is about to enter the baler, the detection signal of the cotton film detection sensor (5) is disconnected; when the next cotton film follows and is laid on the film supporting frame (6), the detection signal of the cotton film detection sensor (5) is re-triggered, and the interval time between the disconnection of the detection signal and the re-triggering of the detection signal is the re-triggering time interval; Judging whether the film head position of the next cotton film meets the requirements of the next coating operation according to the length of the next cotton film laid on the film supporting frame (6).

7. The film wrapping detection method for a cotton baler according to claim 1, characterized in that, It also includes the steps of: During the coating operation, if the signal of the cotton film detection sensor (5) is unstable or the edge feature detection device detects that the color signal of the side edge of the cotton core is abnormal, it is judged that the cotton film is offset or the cotton bale is damaged. At this time, the work process still proceeds downward, but before the cotton bale is finally ejected, the operator is reminded to check, and the cotton bale is directly ejected according to the on-site working conditions; Or, Accept the manual control of the operator to re-execute the packing action and re-coat the cotton core.

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