Enshi Yulu digital rolling unit and rolling method

Abstract

The invention discloses an Enshi Yuwu digital rolling unit and a rolling method. The Enshi Yuwu digital rolling unit comprises a continuous dynamic circulating feeding system, a rolling device, a secondary vibration discharging system and a control system, through effective matching of the continuous dynamic circulating feeding and discharging device, the rolling device and the control system, digital operation of the Enshi Yulu rolling procedure can be achieved, redundant tea which does not enter the rolling machine can be recycled in the operation process, compared with a traditional method, a user does not need to frequently and manually carry the redundant tea, the workload is reduced, and the production efficiency is improved. The working efficiency is improved. Through cooperative use of the mechanisms, the problems of difficult excess material recovery, non-uniform deblocking, low rolling process standard and the like in the tea rolling process are solved, the quality of the Enshi Yulu dews is improved, the processed Enshi Yulu dews have the characteristics of high efficiency, high standard, high intelligence and the like, and the Enshi Yulu dews are of great significance to development of the Enshi Yulu dews.

Description

Technical Field

[0001] The invention belongs to the technical field of agricultural machinery, and more specifically relates to an Enshi Yu Lu digital rolling unit and a rolling method. Background Art

[0002] Enshi Yulu is a traditional steamed green tea in my country. Its processing technology includes steaming, fanning, frying at the first stage of fire, rolling, frying at the second stage of fire, shaping and polishing, baking, and picking. Among them, rolling is one of the processing steps of Enshi Yulu tea. It is to roll the tea leaves after withering to further reduce the volume of the tea leaves, which is conducive to shaping. Secondly, the tea leaves cells are moderately destroyed during the rolling process, which promotes the transformation of the substances contained in the tea leaves and increases the aroma and taste of the tea leaves.

[0003] At present, the traditional way of rolling Enshi Yu Lu tea is that tea farmers hold a proper amount of tea leaves in both hands, and roll the tea ball on the roasting plate from left to right or from right to left in one direction over and over again like rolling a ball; or two people stand opposite each other and roll the tea ball into a cylindrical shape on the roasting plate like pushing a millstone. The traditional rolling method requires a lot of manpower and material resources and is not suitable for mass production.

[0004] At present, most of the rolling machines on the market are flat rotary single-action rolling machines, which use single-arm or double-arm pressure, and the feeding method is vertical feeding. However, the single-machine operation has problems such as low automation and high labor cost; although the rolling production line can improve production efficiency during processing, there are problems such as difficult control of rolling process parameters and imprecise pressure control, and it is difficult to recover the residual materials during rolling loading and unloading, and the tea discharging and feeding process is easy to accumulate and jam the equipment, which still requires manual control; in addition, the judgment of the rolling degree in production mainly relies on manual experience, which is subjective. Studies have shown that the end of rolling needs to meet the conditions of greater than 85% of the strip rate and less than 3% of the broken tea rate. At this time, the quality of processed tea is higher. With the aggravation of population aging and the continuous reduction of rural labor force, the problem of population resources has become prominent. In view of the problems of high labor intensity and low rolling strip rate in the traditional rolling process on the market, it is urgent to develop a digital rolling unit and rolling method for Enshi Yulu to solve the problem of Enshi Yulu processing in my country and improve the economic benefits of tea in my country. Summary of the invention

[0005] In view of the deficiencies in the above-mentioned prior art, the technical problem to be solved by the present invention is to provide a digital kneading unit and kneading method for Enshi Yu Lu. Through the coordinated use of various mechanisms, the production efficiency can be improved, and the problems of difficult control of kneading process parameters in the tea kneading process, difficulty in recovering residual materials in the kneading loading and unloading process, easy accumulation of tea leaves in the feeding and discharging process, and inaccurate pressure control are solved. The quality of Enshi Yu Lu is significantly improved, and the processed Enshi Yu Lu has the characteristics of high efficiency, high standards, and high intelligence, which is of great significance to the development of Enshi Yu Lu.

[0006] In order to achieve the above-mentioned purpose, the present invention adopts the following technical measures:

[0007] The Enshi Yulu digital kneading machine group of the present invention comprises a continuous dynamic cycle feeding system, a kneading device, a secondary vibration discharging system and a control system; the continuous dynamic cycle feeding system comprises a conveying device, a feeding device and a residual material recovery device, the conveying device comprises a chain plate elevator, a tea belt conveyor, a tea distributing machine, and two tea left and right moving weighing machines; the tea belt conveyor, the tea distributing machine, and the tea left and right moving weighing machines are arranged in three layers from top to bottom, the outlet of the chain plate elevator is located above the tea belt conveyor, the chain plate elevator and the tea belt conveyor are installed in parallel, the outlet of the tea belt conveyor is located above the middle position of the tea distributing machine, the tea belt conveyor and the tea distributing machine are installed vertically, and each of the two ends of the tea distributing machine is provided with a discharging port, and the discharging port is located above the tea left and right moving weighing machine; the feeding device comprises a conical feeding mechanism and a weighing platform, and the weighing platform is installed on the conical feeding mechanism; The kneading device includes 8 kneading machines arranged in two rows and four columns. The kneading machines work independently of each other and are respectively installed on the left side of the discharge port of the conical feeding mechanism; the kneading machine includes a frame, a triangular arm, a pressure screw, a pressure cover, a frequency conversion motor, a pressure sensor, a column, a kneading barrel, a position sensor, a tea discharge port, a driven crank, a kneading plate, a kneading machine drive motor, a reducer, a rib, a micro camera, a small pulley, a large pulley, a V-belt, and an active crank; the kneading barrel is fixed on the frame, and the kneading barrel is driven to rotate by the active crank and the driven crank, and the kneading plate is located below the frame; the conical feeding mechanism is located on the right side of the kneading barrel, and the kneading barrel is located above the kneading plate. A circular discharge port is opened in the middle of the kneading plate, and the tea discharge port is below the circular discharge port. 12 ribs are installed on the kneading plate, and the frequency conversion motor is installed on the column to control the up and down movement of the pressure cover; a pressure sensor is installed on the pressure cover, and a position sensor is installed on the outside of the column.

[0008] Furthermore, three triangular arms are welded on the frame, a leather brush is installed at the lower end of the triangular arm, the triangular arm is hinged with the active crank and the driven crank, the active crank is located above the reducer, the reducer is located on the left side of the kneading machine driving motor and is connected through a V-belt; the tea leaves in the conical feeding mechanism fall onto the outside of the kneading plate, and the kneading machine driving motor transmits power to the reducer through a V-belt, one end of the V-belt is connected to a small pulley, and the other end thereof is connected to a large pulley, and the input end of the reducer is coaxially connected to the large pulley The output end of the reducer is coaxial with one end of the active crank, and the other end of the active crank is hinged to the triangular arm. One end of the driven crank is installed on the frame, and the other end is hinged to the triangular arm. The reducer transmits power to the active crank, and the active crank drives the driven crank and the kneading barrel to rotate on the kneading plate through the triangular arm installed on the kneading barrel, and drives the leather brush on the triangular arm to realize circular operation. The tea leaves fall to the outside of the kneading plate through the conveyor, and the tea leaves enter the kneading barrel driven by the circular operation of the leather brush, so as to realize side feeding and kneading while feeding;

[0009] The position sensor receives tea position information to control the amount of leaves added. When the specified amount of leaves is reached, the conical feeding mechanism stops feeding, and the pressure cover starts to move down and kneading begins. The pressure cover moves up and down according to the information of the position sensor. At the same time, the pressure sensor collects pressure data in real time and feeds back to control the operation of the variable frequency motor. After kneading is completed, the tea leaves enter the vibration groove from the tea outlet. Three miniature cameras are installed on the kneading plate. The pressure cover is used to apply pressure to the tea leaves in the kneading barrel. The kneading barrel is constantly rotating, and the tea leaves in the kneading barrel are also rotating. The tea leaves are constantly in contact and friction with the ribs on the kneading plate, gradually curling up, and the cells are broken.

[0010] Furthermore, the secondary vibration discharging system includes a vibration opening and closing mechanism and two vibration troughs; a vibration opening and closing mechanism is installed below the tea outlet, and the vibration opening and closing mechanism includes a linear cylinder, a cross groove, an opening and closing semicircle I, an opening and closing semicircle II, a connecting shaft and a bearing; the vibration opening and closing mechanism is installed below the kneading plate, the opening and closing semicircle I and the opening and closing semicircle II are located at the circular discharging port in the middle of the kneading plate, the opening and closing semicircle I and the opening and closing semicircle II are connected by a connecting shaft, one end of the connecting shaft is fixed to the outer wall of the tea outlet through a bearing, and the other end thereof is connected to the cross groove; the pin shaft I of the opening and closing semicircle I is connected to the hole II of the opening and closing semicircle II, and the pin shaft II of the opening and closing semicircle II is connected to the hole I of the opening and closing semicircle I; the vibration trough is located below the tea outlet of the kneading machine.

[0011] Preferably, the vibration trough includes a feeding channel, a deblocking mechanism, a vibration trough driving motor, and a sprocket group; the tea outlet of the kneading machine is located above the feeding channel, and the tea leaves enter the feeding channel through the outlet on the kneading plate and fall into the vibration trough. A plurality of deblocking mechanisms are installed on the vibration trough, and the steel bars bent at the front of the deblocking mechanism are symmetrically arranged in a spiral line pattern and installed on the deblocking shaft, and the angles between two adjacent steel bars differ by 30 degrees; the deblocking shaft is installed on the vibration trough, and the center line of the deblocking mechanism is perpendicular to the discharge direction of the feeding channel and is located on the right side of the feeding channel; during the rotation of the deblocking mechanism, the clumped tea leaves on the feeding channel are broken up and transported backwards.

[0012] Furthermore, the residual material recovery device includes a belt elevator and a residual material recovery conveyor; the inlet of the belt elevator is located below the left-right moving weighing machine for the front row of tea leaves, and the belt elevator and the left-right moving weighing machine for the front row of tea leaves are arranged in parallel; the outlet of the belt elevator is located above the residual material recovery conveyor, and the belt elevator and the residual material recovery conveyor are installed vertically, and the outlet of the residual material recovery conveyor is located above the chain elevator, so as to realize dynamic circulation transportation of residual materials.

[0013] Preferably, the control system includes a main control module and a sensor module; the main control module includes a PLC controller, which is responsible for sensor data processing and control of the kneading machine group; the sensor module includes a pressure sensor and a position sensor; the pressure sensor is located on the pressure cover of the kneading machine and is used to measure the kneading pressure; the position sensor is located on the column and is used to measure the weight of tea in the kneading barrel; the output ends of the pressure sensor and the position sensor are respectively connected to the analog input module of the main control module.

[0014] Correspondingly, the present invention also provides a digital kneading method for Enshi Yulu, which comprises the following steps:

[0015] Step 1: After the leaves are loaded, the touch operation display shows the initial working information of each device of the conveying device, the kneading device, and the secondary vibration discharging system. The pressure sensor and the position sensor send pressure and position data to the main control module. After receiving the data, the main control module sends it to the communication module and the touch screen display;

[0016] Step 2: Input tea variety, tea grade, rolling machine model, and leaf weight on the touch screen, click to start rolling, and the control system will automatically calculate the optimal working parameters and start recording rolling data based on the standardized data in the database combined with the BP neural network; when working, the PLC processor receives the data information obtained by the pressure and position sensor unit in real time for analysis, controls the working parameters of the conveying device, rolling device, and unloading device in the current production and processing process, and uploads them to the industrial control system at the same time; after the leaves are loaded, the control system starts to send information to the control module to control the start of the conveying device, rolling device, and unloading device, and the tea belt conveyor delivers the tea to the tea spreading machine, which can move forward and backward to respectively deliver the tea to the front row of tea left and right moving weighing machine and the back row of tea left and right moving weighing machine;

[0017] Step three, the control system collects the current pressure and position in real time, and will continue to run if the exit condition is not triggered; if the specified weight is reached, it will start to knead according to the optimal working parameters, and start unloading after the kneading time is reached; when the tea leaves start to be unloaded, the corresponding kneading machine starts to work, and the tea leaves in the conical feeding mechanism enter the weighing platform. When the weighing platform of the unloading mechanism reaches the set weight, the unloading mechanism switch is turned on, and the tea leaves fall onto the conveyor and then enter the outside of the kneading plate. The kneading machine drive motor drives the driven crank through the active crank, thereby driving the leather brush on the triangular arm to operate, and the leather brush brings the tea leaves into the kneading plate and into the kneading barrel, realizing side feeding and kneading while feeding. The tea leaves enter two rows and four columns of 8 kneading machines in turn. When all eight kneading machines are working, the weighing machine in the back row moves left and right to send the tea leaves to the belt elevator. The tea leaves flow to the chain plate elevator again through the belt conveyor to realize the recovery of residual tea leaves;

[0018] Step 4: When all eight rolling machines in the rolling unit are working, the control system recycles the residual material, and transports the tea leaves from the tea leaves moving left and right weighing machine to the belt elevator, and the belt conveyor transports the tea leaves to the chain plate elevator again. When one of the rolling machines in the rolling unit completes the rolling operation and the unloading is completed, the residual material recycling is stopped and the loading is started; after the loading is completed, the rolling starts, and the original image of the rolled leaves on the rolling plate is collected;

[0019] Read the original image, preprocess the original image, and obtain a binary image, a color image, and a grayscale image;

[0020] Feature extraction is performed on binary images, color images and grayscale images respectively to obtain the morphological feature parameters, color feature parameters and texture feature parameters of the rolled leaves;

[0021] The random forest model is used to rank the acquired morphological feature parameters, color feature parameters, and texture feature parameters according to their importance, and the important image features of the rolling process are screened out with a threshold of 0.5;

[0022] Construct a back-propagation neural network model and use a genetic algorithm to optimize the initial weights and thresholds of the back-propagation neural network model;

[0023] The selected important image features of the rolling process are used as input to determine whether the rolling rate requirement is met. If the requirement is met, material feeding begins.

[0024] Step 5: After the rolling and twisting is completed, the tea leaves fall into the vibration trough through the feeding port of the rolling and twisting machine, and the clumping tea leaves are broken up and transported backwards by the de-blocking mechanism on the vibration trough, completing the de-blocking operation.

[0025] Furthermore, the steps of BP neural network optimization are as follows:

[0026] Step S1, data preprocessing, preprocessing the experience data of tea makers, eliminating the data of tea stripping rate and tea breakage rate that do not meet the standards of tea rolling machines, shuffling and normalizing the remaining data, and dividing the data set and the test set into 4:1 after normalization;

[0027] Step S2, model construction, taking tea variety, tea grade, rolling machine model, and leaf weight as inputs, and taking rolling speed, rolling time, empty rolling time, light rolling time, heavy rolling time, light rolling pressure, heavy rolling pressure, strip forming rate, and tea breaking rate as outputs, to construct a 4-input 9-output BP neural network model; the evaluation functions selected in the cross-validation process of the model include determination coefficient, mean square error, mean absolute error, and mean absolute percentage error;

[0028] Step S3, parameter setting and model training, setting the number of hidden layers to 13, the output layer activation function to logsig, the training function to Trainlm, the learning rate to 0.01, and the number of iterations to 1000;

[0029] Step S4, model prediction.

[0030] Therefore, in the rolling process, the rolling parameters predicted by the BP neural network algorithm are used to roll the tea and provide timely feedback. The color and texture characteristics of the tea during the rolling process are collected through machine vision, and a rolling degree discrimination model based on the BP neural network is constructed to realize intelligent regulation of the rolling operation, thereby improving the uniformity of tea rolling, improving the rolling processing quality and rolling process standards of Enshi Yu Lu tea, and ensuring the quality of Enshi Yu Lu tea. This is of great significance to the development of the Enshi Yu Lu tea industry.

[0031] Compared with the prior art, the Enshi Yu Lu digital rolling unit and rolling method of the present invention have the following beneficial effects:

[0032] 1. Through the effective combination of continuous dynamic cycle loading and unloading devices, rolling devices, and control systems, not only can the digital operation of Enshi Yu Lu's rolling process be realized, but also the excess tea that has not entered the rolling machine can be recycled during the operation. Compared with traditional methods, users do not need to frequently carry excess tea manually, which reduces workload and improves work efficiency.

[0033] 2. A leather brush is installed on the frame of the kneading machine. The circular motion of the leather brush enables the side feeding of the kneading machine to achieve the purpose of kneading while feeding, effectively improving the kneading efficiency and tea quality.

[0034] 3. In the present invention, a vibration opening and closing mechanism is installed at the tea outlet of the rolling machine. The opening size of the vibration opening and closing mechanism is controlled by a cylinder, which can effectively control the flow rate of tea leaves after rolling, avoid tea leaves from piling up, and effectively reduce the difficulty of deblocking.

[0035] 4. The vibration trough is equipped with a de-agglomeration mechanism, which breaks up the clumped tea leaves on the feeding channel during rotation and transports them backwards to avoid tea accumulation and improve tea quality.

[0036] 5. The present invention can program the kneading process according to production needs to achieve timed operation, which can save labor; at the same time, relying on the equipped touch screen, the production data and control switches are intuitively displayed, and it has a friendly human-computer interaction interface, which is convenient for application and promotion in production.

[0037] 6. By equipping with a data storage module, the initial production data and process data can be recorded to avoid the loss of initial data due to accidental shutdown. In addition, data can be transmitted to the host computer through the communication module to provide data support for improving the quality of tea in the future.

[0038] 7. The method for predicting the operating process parameters of the tea rolling process based on the back propagation neural network of the present invention predicts the rolling speed, rolling time, empty rolling time, light rolling time, heavy rolling time, light rolling pressure, heavy rolling pressure, strip formation rate, and tea breakage rate through the experience data of tea makers, and provides timely feedback and adjusts the parameters. The operation is simple and time-saving; it can predict the rolling process more accurately.

[0039] 8. The present invention solves the problems of difficulty in recovering residual materials, uneven deblocking, and low standards in the rolling process during tea rolling through the coordinated use of various mechanisms, thereby improving the quality of Enshi Yu Lu and making the processed Enshi Yu Lu have the characteristics of high efficiency, high standards, and high intelligence, which is of great significance to the development of Enshi Yu Lu. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0041] Figure 1 It is a front view of the Enshi Yulu digital kneading machine unit of the present invention;

[0042] Figure 2 It is a top view of the Enshi Yulu digital kneading machine unit of the present invention;

[0043] Figure 3 It is a structural schematic diagram of the vibration trough of the present invention;

[0044] Figure 4 It is a structural schematic diagram of the frame of the kneading machine of the present invention;

[0045] Figure 5 It is a front view of the kneading machine of the present invention;

[0046] Figure 6 A top view of the kneading machine of the present invention;

[0047] Figure 7 It is a structural schematic diagram of the vibration opening and closing mechanism of the present invention;

[0048] Figure 8 It is a structural schematic diagram of the opening and closing semicircle I of the vibration opening and closing mechanism of the present invention;

[0049] Fig. 9 It is a structural schematic diagram of the opening and closing semicircle II of the vibration opening and closing mechanism of the present invention;

[0050] Fig.10 It is a structural schematic diagram of the block-releasing mechanism of the present invention;

[0051] Fig.11 It is a schematic diagram of the power transmission of the vibration trough of the present invention;

[0052] Fig.12 This is a diagram of the tea rolling process process parameter prediction model of the back propagation neural network of the present invention.

[0053] In the figure: 1. Chain plate elevator; 2-1. Tea belt conveyor; 2-2. Residual material recovery conveyor; 3. Tea spreading machine; 4-1. Weighing machine for moving the front row of tea leaves left and right; 4-2. Weighing machine for moving the rear row of tea leaves left and right; 5. Belt elevator; 6. Twisting machine; 6-1. Frame; 6-2. Triangular arm; 6-3. Leather brush; 6-4. Conical feeding mechanism; 6-5. Pressurizing screw; 6-6. Pressurizing cover; 6-7. Frequency conversion motor; 6-8. Pressurizing Force sensor; 6-9, column; 6-10, kneading barrel; 6-11, position sensor; 6-12, tea outlet; 6-13, driven crank; 6-14, kneading plate; 6-15, kneading machine drive motor; 6-16, reducer; 6-17, rib; 6-18, micro camera; 6-19, cylinder; 6-20, weighing platform; 6-21, conveyor; 6-22, linear cylinder; 6-23, cross slot; 6-24, opening and closing Semicircle Ⅰ; 6-25, opening and closing semicircle Ⅱ; 6-26, connecting shaft; 6-27, bearing; 6-28, pin shaft Ⅰ; 6-29, hole Ⅰ; 6-30, pin shaft Ⅱ; 6-31, hole Ⅱ; 6-32, small pulley; 6-33, large pulley; 6-34, V-belt; 6-35, active crank; 7-1, front row vibration trough; 7-2, rear row vibration trough; 7-3, unloading channel; 7-4, block release mechanism; 7-5, vibration trough drive motor ;7-7, fifth deblocking shaft;7-8, first sprocket;7-9, second sprocket;7-10, third sprocket;7-11, fourth sprocket;7-12, fifth sprocket;7-13, sixth sprocket;7-14, seventh sprocket;7-15, eighth sprocket;7-16, ninth sprocket;7-17, tenth sprocket;7-18, first deblocking shaft;7-19, second deblocking shaft;7-20, third deblocking shaft;7-21, fourth deblocking shaft. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0055] like Figures 1 to 12As shown, the digital kneading machine unit of Enshi Yulu of the present invention includes a continuous dynamic cycle feeding system, a kneading device, a secondary vibration discharging system, and a control system. The continuous dynamic cycle feeding system includes a conveying device, a feeding device and a residual material recovery device. The conveying device includes a chain plate elevator 1, a tea belt conveyor 2-1, a tea distributing machine 3, and two tea left and right moving weighing machines; the tea belt conveyor 2-1, the tea distributing machine 3, and the tea left and right moving weighing machines are arranged in three layers from top to bottom, the outlet of the chain plate elevator 1 is located above the tea belt conveyor 2-1, the chain plate elevator 1 is installed parallel to the tea belt conveyor 2-1, the outlet of the tea belt conveyor 2-1 is located above the middle position of the tea distributing machine 3, the tea belt conveyor 2-1 is installed vertically to the tea distributing machine 3, and there is a discharging port at each end of the tea distributing machine 3, and the discharging port is located above the tea left and right moving weighing machine.

[0056] Specifically, the feeding device includes a conical feeding mechanism 6-4 and a weighing platform 6-20. The weighing platform 6-20 is installed on the conical feeding mechanism 6-4. The weighing platform 6-20 is an inverted triangle shape and is fixed to the frame with bolts on the top. A discharge door is installed on one side of the weighing platform 6-20, and the opening and closing of the discharge door is controlled by a cylinder 6-19.

[0057] Specifically, the residual material recovery device includes a belt elevator 5 and a residual material recovery conveyor 2-2. The inlet of the belt elevator 5 is located below the front row tea leaves left and right moving weighing machine 4-1, and the belt elevator 5 and the front row tea leaves left and right moving weighing machine 4-1 are arranged in parallel; the outlet of the belt elevator 5 is located above the residual material recovery conveyor 2-2, and the belt elevator 5 and the residual material recovery conveyor 2-2 are installed vertically, and the outlet of the residual material recovery conveyor 2-2 is located above the chain plate elevator 1, so as to realize the dynamic circulation and transportation of residual materials.

[0058] Specifically, the kneading device includes 8 kneading machines 6, which are arranged in two rows and four columns. The kneading machines 6 work independently of each other and are respectively installed on the left side of the discharge port of the conical feeding mechanism 6-4.

[0059] like Figure 5 and Figure 6As shown, the kneading machine 6 includes a frame 6-1, a triangular arm 6-2, a pressure screw 6-5, a pressure cover 6-6, a frequency conversion motor 6-7, a pressure sensor 6-8, a column 6-9, a kneading barrel 6-10, a position sensor 6-11, a tea outlet 6-12, a driven crank 6-13, a kneading plate 6-14, a kneading machine drive motor 6-15, a reducer 6-16, a rib 6-17, a micro camera 6-18, a small pulley 6-32, a large pulley 6-33, a V-belt 6-34, and an active crank 6-35. The kneading barrel 6-10 is fixed on the frame 6-1, and the kneading barrel 6-10 is driven to rotate by the active crank 6-35 and the driven crank 6-13, and the kneading plate 6-14 is located below the frame 6-1. The conical feeding mechanism 6-4 is located on the right side of the kneading barrel 6-10, and the kneading barrel 6-10 is located above the kneading plate 6-14. A circular discharge port is opened in the middle of the kneading plate 6-14, and the tea discharge port 6-12 is below the circular discharge port. Twelve ribs 6-17 are installed on the kneading plate 6-14. The variable frequency motor 6-7 is installed on the column 6-9 to control the up and down movement of the pressure cover 6-6. A lead screw is arranged in the column 6-9, and a nut is threadedly connected with the lead screw and slides along the direction of the column 6-9. One end of the pressure cover 6-6 is connected with the nut, and the lead screw is driven to rotate by the rotation of the variable frequency motor 6-7, so as to realize the up and down movement of the pressure cover 6-6. A pressure sensor 6-8 is installed on the pressure cover 6-6, and a position sensor 6-11 is installed on the outer side of the column 6-9.

[0060] Among them, three triangular arms 6-2 are welded on the frame 6-1, and a leather brush 6-3 is installed at the lower end of the triangular arm 6-2. The triangular arm 6-2 is hinged with the active crank 6-35 and the driven crank 6-13. The active crank 6-35 is located above the reducer 6-16, and the reducer 6-16 is located on the left side of the kneading machine drive motor 6-15 and is connected by a V-belt 6-34. The tea leaves in the conical feeding mechanism 6-4 fall onto the outside of the kneading plate 6-14, and the kneading machine driving motor 6-15 transmits power to the reducer 6-16 through the V-belt 6-34. One end of the V-belt 6-34 is connected to the small pulley 6-32, and the other end is connected to the large pulley 6-33. The input end of the reducer 6-16 is coaxially connected to the large pulley 6-33, and the output end of the reducer 6-16 is coaxial with one end of the active crank 6-35. The other end of the active crank 6-35 is hinged to the triangular arm 6-2. One end of the driven crank 6-13 is installed on the frame, and the other end is hinged to the triangular arm 6-2. The reducer 6-16 transmits power to the active crank 6-35, and the active crank 6-35 drives the driven crank 6-13 and the kneading barrel 6-10 through the triangular arm 6-2 installed on the kneading barrel 6-10. The barrel 6-10 rotates on the kneading plate 6-14, and drives the leather brush 6-3 on the triangular arm 6-2 to realize circular motion. The tea leaves fall to the outside of the kneading plate 6-14 through the conveyor 6-21. Driven by the circular motion of the leather brush 6-3, the tea leaves enter the kneading barrel 6-10 to realize side feeding and kneading while feeding. The position sensor 6-11 receives the tea position information to control the amount of leaves fed. After the specified amount of leaves is reached, the conical feeding mechanism 6-4 stops feeding, and the pressure cover 6-6 starts to move down and kneading starts. The pressure cover 6-6 moves up and down according to the information of the position sensor 6-11. At the same time, the pressure sensor 6-8 collects pressure data in real time and feeds back to control the operation of the variable frequency motor 6-7. After the kneading is completed, the tea leaves enter the vibration trough from the tea outlet 6-12. Three miniature cameras 6-18 are installed on the kneading plate 6-14. The function of the pressure cover 6-6 is to apply pressure to the tea leaves in the kneading barrel 6-10. The kneading barrel 6-10 is constantly rotating, and the tea leaves in the kneading barrel 6-10 are also rotating. The tea leaves are constantly in contact and friction with the ribs 6-17 on the kneading plate 6-14, gradually rolling up, and the cells are broken. The kneading plate 6-14 is stationary during work, and only the kneading barrel 6-10 is moving, and the movement of the kneading barrel 6-10 is driven by the crank.

[0061] Specifically, the secondary vibration discharging system includes a vibration opening and closing mechanism and two vibration troughs. The vibration opening and closing mechanism is installed below the tea outlet 6-12. The vibration opening and closing mechanism includes a linear cylinder 6-22, a cross slot 6-23, an opening and closing semicircle I 6-24, an opening and closing semicircle II 6-25, a connecting shaft 6-26 and a bearing 6-27. The vibration opening and closing mechanism is installed below the kneading plate 6-14. The opening and closing semicircle I 6-24 and the opening and closing semicircle II 6-25 are located at the circular discharging port in the middle of the kneading plate 6-14. The opening and closing semicircle I 6-24 and the opening and closing semicircle II 6-25 are connected by a connecting shaft 6-26. One end of the connecting shaft 6-26 is fixed to the outer wall of the tea outlet 6-12 through a bearing 6-27, and the other end is connected to the cross slot 6-23. The pin shaft I6-28 of the opening and closing semicircle I6-24 is connected to the hole II6-31 of the opening and closing semicircle II6-25, and the pin shaft II6-30 of the opening and closing semicircle II6-25 is connected to the hole I6-29 of the opening and closing semicircle I6-24. The vibration trough is located below the tea outlet 6-12 of the rolling machine 6.

[0062] like Figure 3 , 10As shown in Figure 11, the vibration trough includes a feeding channel 7-3, a deblocking mechanism 7-4, a vibration trough driving motor 7-5, and a sprocket group; the discharge port of the kneading machine 6 is located above the feeding channel 7-3, and the tea leaves enter the feeding channel 7-3 through the tea discharge port 6-12 on the kneading plate 6-14 and fall into the vibration trough. A plurality of deblocking mechanisms 7-4 are installed on the vibration trough. The steel bars bent at the front of the deblocking mechanism 7-4 are symmetrically arranged on the deblocking shaft in a spiral line pattern, and the angles between two adjacent steel bars differ by 30 degrees. The deblocking shaft of the deblocking mechanism 7-4 is installed on the vibration trough, and the center line of the deblocking mechanism 7-4 is perpendicular to the discharge direction of the feeding channel 7-3 and is located on the right side of the feeding channel 7-3. The vibration trough driving motor 7-5 is used to drive the deblocking mechanism 7-4 to rotate around its own center line. The first sprocket 7-8 is installed on the vibration trough driving motor 7-5, and the second sprocket 7-9 and the third sprocket 7-18 are installed on the first deblocking shaft. The sprocket 7-10 is provided with a fourth sprocket 7-11 and a fifth sprocket 7-12 on the second deblocking shaft 7-19, the sixth sprocket 7-13 and the seventh sprocket 7-14 are provided on the third deblocking shaft 7-20, the eighth sprocket 7-15 and the ninth sprocket 7-16 are provided on the fourth deblocking shaft 7-21, the tenth sprocket 7-17 is provided on the fifth deblocking shaft 7-7, the first sprocket 7-8 on the vibration trough driving motor 7-5 transmits power to the second sprocket 7-9 through a chain, the third sprocket 7-10 transmits power to the fourth sprocket 7-11 through a chain, the fifth sprocket 7-12 transmits power to the sixth sprocket 7-13 through a chain, the seventh sprocket 7-14 transmits power to the eighth sprocket 7-15 through a chain, the ninth sprocket 7-16 transmits power to the tenth sprocket 7-17 through a chain, and the deblocking mechanism 7-4 breaks up the clumped tea leaves on the feeding channel 7-3 during rotation and conveys them backwards. Five deblocking mechanisms 7-4 are installed on the vibration trough. After kneading, the vibration opening and closing mechanism at the tea outlet 6-12 on the kneading plate 6-10 is opened, and the tea leaves fall from the outlet 6-12 into the feeding channel 7-3. During the falling process, the tea leaves are vibrated once by the vibration opening and closing mechanism and vibrated again by the vibration trough.

[0063] Working principle: before rolling, input tea variety, tea grade, rolling machine model, and leaf weight on the touch screen, click to start rolling, the control system will automatically calculate the optimal working parameters based on the standardized data in the database combined with the BP neural network, start rolling and record the rolling data, the chain plate elevator 1 transports the tea to the tea belt conveyor 2-1, the tea belt conveyor 2-1 sends the tea to the tea spreading machine 3, the tea spreading machine 3 can move forward and backward, and send the tea to the front row of tea left and right moving weighing machine 4-1 and the back row of tea left and right moving weighing machine 4-2 respectively. When the tea starts to be unloaded, the corresponding rolling The twisting machine 6 starts to work, and the tea leaves in the conical feeding mechanism 6-4 enter the weighing platform 6-20. When the weighing platform 6-20 reaches the set weight, the discharge door is opened, and the tea leaves fall onto the conveyor 6-21 and then enter the outer side of the kneading plate 6-14. The kneading machine driving motor 6-15 drives the active crank 6-35, and drives the leather brush 6-3 on the triangular arm 6-2 to operate through the driven crank 6-13. The leather brush 6-3 brings the tea leaves into the kneading plate 6-14 and into the kneading barrel 6-10, realizing side feeding and kneading while feeding. During the kneading process, the kneading parameters are adjusted according to the real-time feedback of the tea information. The tea leaves enter the two rows and four columns of eight kneading machines 6 in turn. When all eight kneading machines 6 are working, the weighing machine 4-2 in the back row moves left and right to send the tea leaves to the belt elevator 5. The tea leaves flow to the chain plate elevator 1 again through the belt conveyor 5 to realize the recycling of tea residues. After the rolling and twisting is completed, the tea leaves fall into the vibration trough through the feeding port of the rolling and twisting machine 6, and the agglomerated tea leaves are broken up and transported backward by the deagglomeration mechanism 7-4 on the vibration trough, thereby completing the deagglomeration operation.

[0064] The control system of the present invention includes a main control module, a sensor module, a power supply module, a communication module, a control module, a data storage module, and a terminal module. The above modules are integrated and installed in an electrical control cabinet. The main control module includes a PLC controller, which is responsible for sensor data processing and control of the kneading machine group. The sensor module includes a pressure sensor 6-8 and a position sensor 6-11; the pressure sensor 6-8 is located on the pressure cover 6-6 of the kneading machine and is used to measure the kneading pressure; the position sensor 6-11 is located on the column 6-9 and is used to measure the weight of tea in the kneading barrel; the output ends of the pressure sensor 6-8 and the position sensor 6-11 are respectively connected to the analog input module of the main control module.

[0065] The power supply module (DC24V to DC5V: MORNSUN, model: K7805-2000R3; DC5V to DC3.3V: TMI, model: TMI3411) mainly provides one or more of DC5V and DC3.3V power supplies, and meets the requirements of various voltages. The output end of the power supply module is electrically connected to the input end of the communication module, the sensor module, the main control module, the control module, and the data storage module, and is used to supply power to the communication module, the main control module, the sensor module, the control module, and the data storage module;

[0066] Communication module (RS232 manufacturer: MORNSUN, model: TD331S232H; RS485 manufacturer: MORNSUN, model: TD301D485H-A), connected with pressure sensor, position sensor, and main control module, used to communicate with pressure sensor (Dayang, model: DYLF-102), position sensor (Woqi Electric, model: LJ12A3-4-Z), and main control module;

[0067] The main control module (Huichuang, model: AM400) is the core of the entire control system, responsible for sensor data processing and rolling process control, processing input data and then controlling rolling process parameters; the control module is integrated on the main control module, including a frequency converter group, a conveying device motor group, a rolling device motor group, and a feeding device motor group. The output end of the frequency converter group is connected to the input end of the conveying device motor group, the rolling device motor group, and the feeding device motor group, and is used to control the start and stop of the conveying device, the rolling device, and the feeding device;

[0068] The data storage module (MICROCHIP, model: AT24C256C-SSHL-T) is connected to the main control module and is responsible for storing production data. The standardized data in the database is obtained based on the experience of tea makers, including tea varieties, tea grades, rolling machine models, leaf weight, rolling speed, rolling time, empty rolling time, light rolling time, heavy rolling time, light rolling pressure, heavy rolling pressure, striping rate, and broken tea rate parameters.

[0069] The terminal module includes WiFi communication, touch operation display, and industrial control system; WiFi communication is connected to the main control module for communicating with the host computer; the touch operation display is used to control the rolling unit and display operating parameters; the industrial control system is used to monitor the operation of the rolling unit and collect rolling information.

[0070] In this embodiment, the power supply module provides reliable power to each module of the entire control system and external devices, and the external devices include electromagnetic relays and touch screens.

[0071] In the present invention, the digital kneading method of Enshi Yulu comprises the following steps:

[0072] Step 1: After the leaves are loaded, the touch operation display shows the initial working information of each device of the conveying device, the kneading device, and the secondary vibration discharging system. The pressure sensor and the position sensor send pressure and position data to the main control module. After receiving the data, the main control module sends it to the communication module and the touch screen display;

[0073] Step 2: Input the tea variety, tea grade, rolling machine model, and leaf weight on the touch screen, and click to start rolling. The control system will automatically calculate the optimal working parameters based on the standardized data in the database combined with the BP neural network and start recording the rolling data. During operation, the PLC processor receives the data information obtained by the pressure and position sensor units in real time for analysis, controls the working parameters of the conveying device, rolling device, and unloading device in the current production process, and uploads them to the industrial control system at the same time; after the leaves are loaded, the control system starts to send information to the control module to control the start of the conveying device, rolling device, and unloading device. The tea belt conveyor 2-1 delivers the tea to the tea spreading machine 3. The tea spreading machine 3 can move forward and backward to deliver the tea to the front row of tea left and right moving weighing machine 4-1 and the back row of tea left and right moving weighing machine 4-2 respectively;

[0074] Step three, the control system collects the current pressure and position in real time, and will continue to run if the exit condition is not triggered; if the specified weight is reached, it will start to knead according to the optimal working parameters, and start unloading after the kneading time is reached; when the tea leaves start to be unloaded, the corresponding kneading machine 6 starts to work, and the tea leaves in the conical feeding mechanism 6-4 enter the weighing platform 6-20. When the weighing platform of the unloading mechanism reaches the set weight, the unloading mechanism switch is turned on, and the tea leaves fall onto the conveyor 6-21 and then enter the outer side of the kneading plate 6-14, and the kneading machine drives the motor The machine 6-15 drives the driven crank 6-13 through the active crank 6-35, thereby driving the leather brush 6-3 on the triangular arm 6-2 to operate, and the tea leaves are brought into the kneading plate 6-14 and then into the kneading barrel 6-10 through the leather brush 6-3, so as to realize side feeding and kneading while feeding. The tea leaves are sequentially fed into the eight kneading machines 6 in two rows and four columns. When all eight kneading machines 6 are working, the weighing machine 4-2 in the rear row moves left and right to send the tea leaves to the belt elevator 5. The tea leaves flow to the chain elevator 1 again through the belt conveyor 5 to realize the recovery of the residual tea leaves.

[0075] Step 4: When all 8 rolling machines in the rolling unit are working, the control system recycles the residual material, and transports the tea leaves from the tea leaves moving left and right weighing machine to the belt elevator 5, and the belt conveyor 5 transports the tea leaves to the chain plate elevator 1 again. When one of the rolling machines in the rolling unit completes the rolling operation and the unloading is completed, the residual material recovery is stopped and the loading is started; after the loading is completed, the rolling starts, and the original images of the rolled leaves on the rolling plates 6-14 are collected;

[0076] Read the original image, preprocess the original image, and obtain a binary image, a color image, and a grayscale image;

[0077] Feature extraction is performed on binary images, color images and grayscale images respectively to obtain the morphological feature parameters, color feature parameters and texture feature parameters of the rolled leaves;

[0078] The random forest model is used to rank the acquired morphological feature parameters, color feature parameters, and texture feature parameters according to their importance, and the important image features of the rolling process are screened out with a threshold of 0.5;

[0079] Construct a back-propagation neural network model and use a genetic algorithm to optimize the initial weights and thresholds of the back-propagation neural network model;

[0080] The selected important image features of the rolling process are used as input to determine whether the rolling rate requirements are met. If the conditions are met, material feeding begins.

[0081] Step 5, after the rolling and twisting is completed, the tea leaves fall into the vibration trough through the feeding port of the rolling machine 6, and the agglomerated tea leaves are broken up and transported backwards by the deagglomeration mechanism 7-4 on the vibration trough, completing the deagglomeration operation.

[0082] Among them, the steps of BP neural network optimization are as follows:

[0083] Step S1, data preprocessing, preprocessing the experience data of tea makers, eliminating the data of tea stripping rate and tea breakage rate that do not meet the standards of tea rolling machines, shuffling and normalizing the remaining data, and dividing the data set and the test set into 4:1 after normalization;

[0084] Step S2, model construction, taking tea variety, tea grade, rolling machine model, and leaf weight as input, and taking rolling speed, rolling time, empty rolling time, light rolling time, heavy rolling time, light rolling pressure, heavy rolling pressure, strip forming rate, and tea breaking rate as output, to construct a 4-input 9-output BP neural network model; the evaluation functions selected in the cross-validation process of the model include determination coefficient, mean square error, mean absolute error, and mean absolute percentage error.

[0085] Step S3, parameter setting and model training, setting the number of hidden layers to 13, the output layer activation function to logsig, the training function to Trainlm, the learning rate to 0.01, and the number of iterations to 1000;

[0086] Step S4, model prediction.

[0087] In the digital kneading method of Enshi Yulu of the present invention, a kneading degree judgment method of multi-feature machine vision is proposed: the morphological feature parameters include major axis, minor axis, rectangularity, circularity, compactness, diagonal length and slenderness; the color feature parameters include the first-order moment of red, green, blue, hue, saturation and brightness; the texture feature parameters include contrast, angular second-order moment, correlation, entropy and inverse difference matrix.

[0088] The method for the five morphological characteristics of rectangularity, roundness, compactness, diagonal length and slenderness is:

[0089]

[0090] J=D / L

[0091]

[0092] Where: R is rectangularity, E is circularity, J is compactness, Len is linearity, T is slenderness, A is the area of ​​the tea leaf outline, C is the perimeter of the tea leaf outline, D is the diameter of the circle with the same area as the tea leaf outline, L is the length of the circumscribed rectangle of the tea leaf outline, and S is the width of the circumscribed rectangle of the tea leaf outline;

[0093] The calculation method of the first-order moment of color characteristic parameters including red, green, blue, hue, saturation, and brightness is:

[0094]

[0095] Where: N represents the total number of pixels in the image, P ij represents the pixel value of the i-th color channel in the j-th image, E i Represents the first-order moment of color feature parameters.

[0096] The invention can improve production efficiency through the coordinated use of various mechanisms, solves the problems of difficult control of rolling process parameters in the tea rolling process, difficulty in recovering residual materials in the rolling loading and unloading process, easy accumulation of tea leaves in the feeding and discharging process, inaccurate pressure control, etc., and significantly improves the quality of Enshi Yu Lu, so that the processed Enshi Yu Lu has the characteristics of high efficiency, high standards, high intelligence, etc., which is of great significance to the development of Enshi Yu Lu.

[0097] The above description is only a specific implementation of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be understood by anyone familiar with the technology within the technical scope disclosed by the present invention should be included in the scope of the present invention.

Claims

1. An Enshi Yulu digital rolling unit, characterized in that: It includes continuous dynamic cycle feeding system, kneading device, secondary vibration discharging system and control system; The continuous dynamic cycle feeding system comprises a conveying device, a feeding device and a residual material recovery device. The conveying device comprises a chain plate elevator (1), a tea belt conveyor (2-1), a tea distributing machine (3) and two tea left and right moving weighing machines; the tea belt conveyor (2-1), the tea distributing machine (3) and the tea left and right moving weighing machines are arranged in three layers from top to bottom, the outlet of the chain plate elevator (1) is located above the tea belt conveyor (2-1), the chain plate elevator (1) and the tea belt conveyor (2-1) are installed in parallel, the outlet of the tea belt conveyor (2-1) is located above the middle position of the tea distributing machine (3), the tea belt conveyor (2-1) and the tea distributing machine (3) are installed vertically, and the tea distributing machine (3) has a discharge port at each end, and the discharge port is located above the tea left and right moving weighing machines; The feeding device comprises a conical feeding mechanism (6-4) and a weighing platform (6-20), and the weighing platform (6-20) is installed on the conical feeding mechanism (6-4); The kneading device comprises 8 kneading machines (6) arranged in two rows and four columns. The kneading machines (6) work independently of each other and are respectively installed on the left side of the discharge port of the conical feeding mechanism (6-4); The kneading machine (6) comprises a frame (6-1), a triangular arm (6-2), a pressure screw (6-5), a pressure cover (6-6), a frequency conversion motor (6-7), a pressure sensor (6-8), a column (6-9), a kneading barrel (6-10), a position sensor (6-11), a tea outlet (6-12), a driven crank (6-13), a kneading plate (6-14), a kneading machine drive motor (6-15), a reducer (6-16), a rib (6-17), a micro camera (6-18), a small pulley (6-32), a large pulley (6-33), a V-belt (6-34), and an active crank (6-35); the kneading barrel (6-10) is fixed on the frame (6-1), and is driven by the active crank (6-35) and the driven crank (6-35). The crank (6-13) drives the kneading barrel (6-10) to rotate, and the kneading plate (6-14) is located below the frame (6-1); the conical feeding mechanism (6-4) is located on the right side of the kneading barrel (6-10), and the kneading barrel (6-10) is located above the kneading plate (6-14); a circular discharge port is opened in the middle of the kneading plate (6-14), and a tea discharge port (6-12) is located below the circular discharge port; 12 ribs (6-17) are installed on the kneading plate (6-14); the variable frequency motor (6-7) is installed on the column (6-9) to control the pressure cover (6-6) to move up and down; a pressure sensor (6-8) is installed on the pressure cover (6-6), and a position sensor (6-11) is installed on the outer side of the column (6-9).

2. The Enshi Yu Lu digital rolling unit according to claim 1 is characterized in that: Three triangular arms (6-2) are welded on the frame (6-1), a leather brush (6-3) is installed at the lower end of the triangular arm (6-2), the triangular arm (6-2) is hinged with the active crank (6-35) and the driven crank (6-13), the active crank (6-35) is located above the reducer (6-16), the reducer (6-16) is located on the left side of the kneading machine driving motor (6-15), and is connected through a V-belt (6-34); The tea leaves in the conical feeding mechanism (6-4) fall onto the outside of the kneading plate (6-14), and the kneading machine driving motor (6-15) transmits power to the reducer (6-16) through the V-belt (6-34). One end of the V-belt (6-34) is connected to the small pulley (6-32), and the other end is connected to the large pulley (6-33). The input end of the reducer (6-16) is coaxially connected to the large pulley (6-33), and the output end of the reducer (6-16) is coaxially connected to one end of the active crank (6-35). The other end of the active crank (6-35) is hinged to the triangular arm (6-2). One end of the driven crank (6-13) is connected to the The driving crank (6-35) is installed on the frame, and the other end thereof is hinged with the triangular arm (6-2). The reducer (6-16) transmits power to the active crank (6-35). The active crank (6-35) drives the driven crank (6-13) and the kneading barrel (6-10) to rotate on the kneading plate (6-14) through the triangular arm (6-2) installed on the kneading barrel (6-10), and drives the leather brush (6-3) on the triangular arm (6-2) to realize circular movement. The tea leaves fall to the outer side of the kneading plate (6-14) through the conveyor (6-21). The tea leaves enter the kneading barrel (6-10) driven by the circular movement of the leather brush (6-3), so as to realize side feeding and kneading while feeding. The position sensor (6-11) receives tea position information to control the amount of tea leaves fed. When the specified amount of tea leaves is reached, the conical feeding mechanism (6-4) stops feeding, and the pressure cover (6-6) starts to move down and kneading begins. The pressure cover (6-6) moves up and down according to the information of the position sensor (6-11). At the same time, the pressure sensor (6-8) collects pressure data in real time and feeds back to control the operation of the variable frequency motor (6-7). After the kneading is completed, the tea leaves enter the vibration groove from the tea outlet (6-12). Three miniature cameras (6-18) are installed on the kneading plate (6-14); the pressure cover (6-6) is used to apply pressure to the tea leaves in the kneading barrel (6-10). The kneading barrel (6-10) is constantly rotating, and the tea leaves in the kneading barrel (6-10) are also rotating. The tea leaves are constantly in contact and friction with the ribs (6-17) on the kneading plate (6-14), gradually curling up, and the cells are broken.

3. The Enshi Yu Lu digital kneading unit according to claim 2 is characterized in that: The secondary vibration discharging system comprises a vibration opening and closing mechanism and two vibration troughs; the vibration opening and closing mechanism is installed below the tea outlet (6-12), and the vibration opening and closing mechanism comprises a linear cylinder (6-22), a cross groove (6-23), an opening and closing semicircle I (6-24), an opening and closing semicircle II (6-25), a connecting shaft (6-26) and a bearing (6-27); the vibration opening and closing mechanism is installed below the kneading plate (6-14), the opening and closing semicircle I (6-24) and the opening and closing semicircle II (6-25) are located at the circular discharging port in the middle of the kneading plate (6-14), and the opening and closing semicircle I (6-24) and the opening and closing semicircle II (6-25) are connected to each other. The opening and closing semicircle II (6-25) is connected via a connecting shaft (6-26), one end of the connecting shaft (6-26) is fixed to the outer wall of the tea outlet (6-12) via a bearing (6-27), and the other end is connected to the cross groove (6-23); the pin shaft I (6-28) of the opening and closing semicircle I (6-24) is connected to the hole II (6-31) of the opening and closing semicircle II (6-25), and the pin shaft II (6-30) of the opening and closing semicircle II (6-25) is connected to the hole I (6-29) of the opening and closing semicircle I (6-24); and the vibration groove is located below the tea outlet (6-12) of the rolling machine (6).

4. The Enshi Yu Lu digital kneading unit according to claim 3 is characterized in that: The vibration trough comprises a feeding channel (7-3), a deblocking mechanism (7-4), a vibration trough driving motor (7-5), and a sprocket group; the tea outlet (6-12) of the kneading machine (6) is located above the feeding channel (7-3), and the tea leaves enter the feeding channel (7-3) through the outlet on the kneading plate (6-14) and fall into the vibration trough; a plurality of deblocking mechanisms (7-4) are installed on the vibration trough, and the steel bars bent at the front of the deblocking mechanisms (7-4) are symmetrically arranged in a spiral line pattern and installed on the deblocking shaft, and the angles between two adjacent steel bars differ by 30 degrees; the deblocking shaft is installed on the vibration trough, and the center line of the deblocking mechanism (7-4) is perpendicular to the discharge direction of the feeding channel (7-3) and is located on the right side of the feeding channel (7-3); during the rotation of the deblocking mechanism (7-4), the clumped tea leaves on the feeding channel (7-3) are broken up and transported backwards.

5. The Enshi Yu Lu digital rolling unit according to claim 1 is characterized in that: The residual material recovery device comprises a belt elevator (5) and a residual material recovery conveyor (2-2); the inlet of the belt elevator (5) is located below the front row tea leaf left-right moving weighing machine (4-1), and the belt elevator (5) and the front row tea leaf left-right moving weighing machine (4-1) are arranged in parallel; the outlet of the belt elevator (5) is located above the residual material recovery conveyor (2-2), the belt elevator (5) and the residual material recovery conveyor (2-2) are vertically installed, and the outlet of the residual material recovery conveyor (2-2) is located above the chain plate elevator (1), so as to realize dynamic circulation transportation of residual materials.

6. The Enshi Yu Lu digital rolling unit according to claim 1 is characterized in that: The control system comprises a main control module and a sensor module; the main control module comprises a PLC controller for processing sensor data and controlling a rolling machine group; the sensor module comprises a pressure sensor (6-8) and a position sensor (6-11); the pressure sensor (6-8) is located on a pressure cover (6-6) of the rolling machine and is used to measure rolling pressure; the position sensor (6-11) is located on a column (6-9) and is used to measure the weight of tea leaves in a rolling barrel; the output ends of the pressure sensor (6-8) and the position sensor (6-11) are respectively connected to an analog input module of the main control module.

7. An Enshi Yu Lu digital rolling method of the Enshi Yu Lu digital rolling unit according to any one of claims 1 to 6, characterized in that: The steps are: Step 1: After the leaves are loaded, the touch operation display shows the initial working information of each device of the conveying device, the kneading device, and the secondary vibration discharging system. The pressure sensor and the position sensor send pressure and position data to the main control module. After receiving the data, the main control module sends it to the communication module and the touch screen display; Step 2: Input tea variety, tea grade, rolling machine model, and leaf weight on the touch screen, click to start rolling, and the control system will automatically calculate the optimal working parameters based on the standardized data in the database combined with the BP neural network and start recording the rolling data; when working, the PLC processor receives the data information obtained by the pressure and position sensor unit in real time for analysis, controls the working parameters of the conveying device, rolling device, and unloading device in the current production and processing process, and uploads them to the industrial control system at the same time; after the leaves are loaded, the control system starts to send information to the control module to control the start of the conveying device, rolling device, and unloading device, and the tea belt conveyor (2-1) delivers the tea to the tea distributing machine (3), and the tea distributing machine (3) can move forward and backward to respectively deliver the tea to the front row tea left and right moving weighing machine (4-1) and the rear row left and right moving weighing machine (4-2); Step 3: The control system collects the current pressure and position in real time, and will continue to run if the exit condition is not triggered; if the specified weight is reached, it will start to knead according to the optimal working parameters, and start unloading after the kneading time is reached; when the tea leaves start to be unloaded, the corresponding kneading machine (6) starts to work, and the tea leaves in the conical feeding mechanism (6-4) enter the weighing platform (6-20). When the weighing platform of the unloading mechanism reaches the set weight, the unloading mechanism switch is turned on, and the tea leaves fall onto the conveyor (6-21) and then enter the outer side of the kneading plate (6-14). The kneading machine drive motor (6-15) passes The active crank (6-35) drives the driven crank (6-13), thereby driving the leather brush (6-3) on the triangular arm (6-2) to operate, and the tea leaves are brought into the kneading plate (6-14) and then into the kneading barrel (6-10) through the leather brush (6-3), so as to realize side feeding and kneading while feeding. The tea leaves are sequentially fed into two rows and four columns of eight kneading machines (6). When all eight kneading machines (6) are working, the weighing machine (4-2) in the rear row moves left and right to send the tea leaves to the belt elevator (5). The tea leaves flow through the belt conveyor (5) to the chain plate elevator (1) again to realize the recovery of tea leaves. Step 4: When all eight rolling machines in the rolling unit are working, the control system recycles the residual material, and the tea leaves are transported to the belt elevator (5) by the tea leaves moving left and right weighing machine, and the belt conveyor (5) transports the tea leaves to the chain elevator (1) again. When one of the rolling machines in the rolling unit completes the rolling operation and the unloading is completed, the residual material recovery is stopped and the loading is started; after the loading is completed, the rolling is started, and the original image of the rolled leaves on the rolling plate (6-14) is collected; Read the original image, preprocess the original image, and obtain a binary image, a color image, and a grayscale image; Feature extraction is performed on binary images, color images and grayscale images respectively to obtain the morphological feature parameters, color feature parameters and texture feature parameters of the rolled leaves; The random forest model is used to rank the acquired morphological feature parameters, color feature parameters, and texture feature parameters according to their importance, and the important image features of the rolling process are screened out with a threshold of 0.5; Construct a back-propagation neural network model and use a genetic algorithm to optimize the initial weights and thresholds of the back-propagation neural network model; The selected important image features of the rolling process are used as input to determine whether the rolling rate requirement is met. If the requirement is met, material feeding begins. Step 5, after the rolling and twisting is completed, the tea leaves fall into the vibration trough through the feeding port of the rolling and twisting machine (6), and the agglomerated tea leaves are broken up and transported backwards by the deagglomeration mechanism (7-4) on the vibration trough, thus completing the deagglomeration operation.

8. The Enshi Yu Lu digital kneading method according to claim 7, characterized in that: The steps of BP neural network optimization are as follows: Step S1, data preprocessing, preprocessing the experience data of tea makers, eliminating the data of tea stripping rate and tea breakage rate that do not meet the standards of tea rolling machines, shuffling and normalizing the remaining data, and dividing the data set and the test set into 4:1 after normalization; Step S2, model construction, taking tea variety, tea grade, rolling machine model, and leaf weight as inputs, and taking rolling speed, rolling time, empty rolling time, light rolling time, heavy rolling time, light rolling pressure, heavy rolling pressure, strip forming rate, and tea breaking rate as outputs, to construct a 4-input 9-output BP neural network model; the evaluation functions selected in the cross-validation process of the model include determination coefficient, mean square error, mean absolute error, and mean absolute percentage error; Step S3, parameter setting and model training, setting the number of hidden layers to 13, the output layer activation function to logsig, the training function to Trainlm, the learning rate to 0.01, and the number of iterations to 1000; Step S4, model prediction.

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