CN111264647A - Tea rolling machine, barrel cover and tea rolling method - Google Patents

Abstract

The invention provides a tea rolling machine, a barrel cover and a tea rolling method, wherein the tea rolling machine comprises: kneading the disc; a kneading barrel for accommodating tea leaves and capable of making a revolving motion on the kneading disc; the barrel cover is arranged on the kneading barrel, and the lifting mechanism is used for driving the barrel cover to move up and down so as to apply kneading pressure to the tea leaves in the kneading barrel; and a pressure sensor is arranged on the barrel cover to detect the upward pressure applied to the barrel cover. The technical problem that the quality of tea leaves is difficult to control in the tea making process is solved through the tea making method.

Description

Tea rolling machine, barrel cover and tea rolling method

technical field

The invention relates to the technical field of tea processing, in particular to a tea rolling machine, a barrel cover and a tea rolling method.

Background technique

Tea rolling is an important process in the tea making process, and a tea rolling machine is usually used for tea rolling. CN205196906U, CN207721126U and CN204811790U respectively disclose a tea kneading machine. The disclosed tea kneading machine includes a kneading plate, a kneading barrel and a barrel cover. The kneading of tea leaves; the lid can move up and down in the kneading barrel to adjust the kneading effect. The kneading effect has a great influence on the quality of tea leaves. In order to improve the quality of tea leaves and ensure the stability of tea quality, the upper and lower positions of the barrel lid are usually adjusted according to experience. However, in actual work, it is difficult to control the quality of tea leaves.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a tea rolling machine, a barrel cover and a tea rolling method, so as to alleviate the technical problem that the quality of tea leaves is difficult to control in the process of tea making.

Above-mentioned purpose of the present invention can adopt following technical scheme to realize:

The present invention provides a tea rolling machine, comprising:

kneading plate;

a kneading barrel, which is used for accommodating tea leaves and can perform rotary motion on the kneading plate;

A barrel cover and a lifting mechanism, the barrel cover is arranged on the kneading barrel, and the lifting mechanism is used to drive the barrel cover to move up and down, so as to apply a rolling pressure to the tea leaves in the kneading barrel;

The barrel cover is provided with a pressure sensor to detect the upward pressure on the barrel cover.

In a preferred embodiment, the bucket cover includes an upper cover seat, a lower cover plate and a plurality of springs, the upper cover seat is mounted on the lifting mechanism, and the upper end of the spring is connected to the upper cover seat, so The lower cover plate is connected with the lower ends of each of the springs; the pressure sensor is connected between the upper cover base and the lower cover plate.

In a preferred embodiment, a plurality of said springs are distributed around the circumference of said pressure sensor.

In a preferred embodiment, the bucket cover includes a plurality of guide posts arranged in an up-down direction, and the lower cover plate can slide along the guide posts relative to the upper cover seat; the guide posts and the springs , distributed alternately along the circumferential direction of the pressure sensor.

In a preferred embodiment, the lifting mechanism includes a column, a connecting crossbar and a lifting motor, the first end of the connecting crossbar is slidably connected to the vertical column, and the bucket cover is mounted on the second end of the connecting crossbar , the lifting motor can drive the connecting crossbar to slide up and down on the vertical column.

In a preferred embodiment, an upper travel switch for controlling the upper limit position of the connecting crossbar and a down travel switch for controlling the lower limit position of the connecting crossbar are provided on the upright column.

In a preferred embodiment, the tea rolling machine includes a control device, the pressure sensor and the lifting motor are both electrically connected to the control device, and the control device controls the pressure detection value of the pressure sensor according to the pressure detection value of the pressure sensor. The lift motor drives the bucket cover to move up and down.

In a preferred embodiment, the tea tea rolling machine includes a display electrically connected to the control device, and the display can display the pressure detection value of the pressure sensor in real time.

The invention provides a barrel cover, which is applied to a tea rolling machine and applies rolling pressure to the tea leaves in the barrel of the tea rolling machine. The barrel cover includes: an upper cover seat, a lower cover plate, a pressure sensor and a plurality of springs, The upper cover seat is installed on the lifting mechanism of the tea rolling machine, the upper end of the spring is connected to the upper cover seat, the lower cover plate is connected to the lower end of each of the springs; the pressure sensor is connected to the between the upper cover base and the lower cover plate.

The present invention provides a tea rolling method, which adopts the above-mentioned tea rolling machine to control the movement amount of the elevating mechanism to drive the barrel cover to move up and down according to the pressure detection value of the pressure sensor.

In a preferred embodiment, the tea leaf rolling method comprises:

Step S10, setting a preset pressure curve of the twisting pressure changing with time;

Step S20, the tea tea rolling machine performs rolling treatment on the tea leaves, and the pressure sensor detects,

When the pressure detection value is higher than the preset pressure value at the corresponding time point of the preset pressure curve, increase the upward movement of the barrel cover;

When the pressure detection value is lower than the preset pressure value at the corresponding time point of the preset pressure curve, the downward movement amount of the bucket lid is increased.

The features and advantages of the present invention are:

When the tea kneading machine is running, the barrel cover applies kneading pressure to the tea leaves in the kneading barrel, and the pressure sensor can detect the reaction force received by the kneading barrel, so as to monitor the size of the kneading pressure applied to the tea leaves more intuitively, which is convenient for establishing The quantitative index relationship between kneading pressure and tea quality is easy to adjust the kneading pressure. The kneading pressure is an important parameter in the kneading process and has an important impact on the kneading quality, which is conducive to controlling the quality of tea and ensuring the stability of tea quality. .

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present invention more clearly, the following briefly introduces the accompanying drawings used in the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can also be obtained from these drawings without creative effort.

Fig. 1 is the front view of tea tea rolling machine provided by the present invention;

Fig. 2 is the top view of the kneading plate and kneading barrel in the tea tea kneading machine shown in Fig. 1;

Fig. 3 is the structural representation of the barrel cover in the tea-leaf rolling machine shown in Fig. 1;

Fig. 4 is the sectional view of the A-A direction of Fig. 3;

Fig. 5 is the control schematic diagram in the tea-leaf rolling machine shown in Fig. 1;

Fig. 6 is the control principle diagram in the tea rolling machine shown in Fig. 1;

Fig. 7 is the pressure curve diagram of the tea rolling machine provided by the present invention;

Figure 8 is a schematic diagram of the tea rolling method provided by the present invention.

Description of reference numbers:

10, kneading plate; 11, ribs; 20, kneading bucket;

30, barrel cover; 301, upper cover seat; 302, lower cover plate; 31, pressure sensor; 32, spring; 33, guide post;

40. Lifting mechanism; 41. Lifting motor; 42. Upright column; 43. Connecting crossbar; 441. Upstroke switch; 442, Downstroke switch;

51. Display; 52. Warning light; 60. Control device; 70. Rack;

81. Connecting seat; 82. Kneading motor.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Under normal circumstances, adjusting the position of the barrel lid downward can increase the rolling pressure on the tea leaves. In some tea kneading machines, a height sensor is provided to detect the height position of the barrel cover in the kneading barrel, and the tea quality is controlled by controlling the height position of the barrel cover. However, the inventor found that it is difficult to achieve accurate and consistent control of the tea quality by controlling the height position of the barrel cover.

Example 1

The present invention provides a tea kneading machine, as shown in Figures 1 and 3, the tea kneading machine includes: a kneading plate 10, a kneading barrel 20, a barrel cover 30 and a lifting mechanism 40; the kneading barrel 20 is used for accommodating tea leaves, And it can make a rotary motion on the kneading plate 10; the barrel cover 30 is arranged on the kneading barrel 20, and the lifting mechanism 40 is used to drive the barrel cover 30 to move up and down to apply kneading pressure to the tea leaves in the kneading barrel 20; There is a pressure sensor 31 to detect the upward pressure on the lid 30 .

When the tea kneading machine is running, the barrel cover 30 exerts a kneading pressure on the tea leaves in the kneading barrel 20, and the pressure sensor 31 can detect the reaction force received by the kneading barrel 20, so as to more intuitively monitor the effect of the kneading pressure on the tea leaves. It is convenient to establish the quantitative index relationship between the rolling pressure and the tea quality, and it is convenient to adjust the rolling pressure. The rolling pressure is an important parameter in the rolling process and has an important impact on the rolling quality, which is conducive to controlling the tea quality and ensuring the tea leaves. Quality stability.

The inventor found that when the kneading bucket 20 is rotated, the height of the tea leaves in the kneading bucket 20 will change with the rotation of the kneading bucket 20, and the actual kneading pressure of the tea leaves at the position with the higher tea leaf height will increase, and the height of the tea leaves will be higher. The actual rolling pressure of the tea leaves in the lower position will be reduced.

Further, the tub cover 30 includes an upper cover seat 301, a lower cover plate 302 and a plurality of springs 32. As shown in FIG. 3 and FIG. , the lower cover plate 302 is connected with the lower end of each spring 32 ; the pressure sensor 31 is connected between the upper cover base 301 and the lower cover plate 302 . The lower cover plate 302 can move up and down relative to the upper cover base 301 , and is acted by the elastic force of the spring 32 during relative movement. When the rolling pressure exerted on the tea leaves by the local position of the lower cover plate 302 is greater than other positions, the position of the lower cover plate 302 with the larger rolling pressure will automatically move upward, and the spring 32 at this position will be compressed at the same time, and the rolling pressure at this position will automatically move upward. By reducing the pressure, the rolling pressure of the tea leaves at each position of the lower cover plate 302 is more uniform and consistent, which is beneficial to ensure the accuracy of the pressure detection by the pressure sensor.

Further, as shown in FIG. 4 , a plurality of springs 32 are distributed around the circumference of the pressure sensor 31 , and through the compression and extension of each spring 32 , the rolling pressure of the tea leaves at each position of the lower cover 302 can be kept uniform. In addition, the pressure sensor 31 is arranged at the center position, and the pressure at each position in the circumferential direction is relatively consistent, which can reduce the influence of the torque on the pressure sensor 31 due to the large pressure on one side, so that the pressure sensor 31 can be more accurately affected by the lower cover 302. The size of the upward pressure can more accurately reflect the size of the kneading pressure applied to the tea leaves, which is convenient for more accurate adjustment of the kneading pressure, and establishes a more accurate relationship between the tea quality and the kneading pressure.

As shown in FIG. 3 and FIG. 4 , the tub cover 30 includes a plurality of guide posts 33 arranged in the up-down direction. The lower cover plate 302 can slide relative to the upper cover base 301 along the guide posts 33 , and the lower cover plate can be The movement of 302 relative to the upper cover seat 301 is more stable and smooth. A fitting gap can be set between the guide post 33 and the upper cover base 301 to allow the lower cover plate 302 to deflect in a small range relative to the upper cover base 301 in the vertical direction, so as to facilitate the compression or extension of the spring 32 at a local position. long.

In an embodiment of the present invention, the lifting mechanism 40 includes a vertical column 42 , a connecting cross bar 43 and a lifting motor 41 , the first end of the connecting horizontal bar 43 is slidably connected to the vertical column 42 , and the bucket cover 30 is installed on the second connecting cross bar 43 . At both ends, the lift motor 41 can drive the connecting cross bar 43 to slide up and down on the upright column 42 . Specifically, the upright column 42 and the kneading bucket 20 can be connected together through the connecting seat 81 to perform a rotary motion on the kneading plate 10 together. The elevating motor 41 is connected with the connecting cross bar 43 through a transmission structure, and the transmission mechanism can adopt a screw mechanism or a rack and pinion mechanism. Further, an upper travel switch 441 for controlling the upper limit position of the connecting cross bar 43 and a down travel switch 442 for controlling the lower limit position of the connecting cross bar 43 are arranged on the upright column 42, which is beneficial to ensure the safety in the production process. .

In one embodiment of the present invention, the tea kneading machine includes a control device 60, the pressure sensor 31 and the lift motor 41 are both electrically connected to the control device 60, and the pressure detection value of the pressure sensor 31 is transmitted to the control device 60, so as to facilitate the adjustment of the rolling process. The rolling pressure of the tea leaves is recorded, so as to understand the relationship between the rolling pressure and the tea quality, and to regulate the rolling process to improve the stability of the tea quality and improve the tea quality.

The control device 60 can control the operation of the lift motor 41 to control the height of the tub cover 30 . Further, the control device 60 controls the lift motor 41 to drive the tub cover 30 to move up and down according to the pressure detection value of the pressure sensor 31 . For example: preset pressure preset value, during operation, when the pressure detection value is higher than the pressure preset value, control the barrel cover 30 to adjust the position upward to reduce the kneading pressure; when the pressure detection value is lower than the pressure preset value , control the barrel cover 30 to adjust the position downward to increase the kneading pressure.

During the kneading process, the pressure value can be set by time period, and the “pressure light-heavy-light-empty” setting operation can be performed, for example, the pressure is 100N in 5 minutes before starting, the pressure is 200N in 5-10 minutes, the pressure is 300N in 10-20 minutes, and the pressure is 20 -30 minutes 200N, 30-35 minutes pressure 0N; the pressure can also be set to change continuously with time. In this case, a preset pressure curve of the variation of the kneading pressure and time is preset; during operation, according to the preset pressure curve, the control device 60 controls the barrel cover 30 to move up and down, when the pressure detection value is above the preset pressure curve , increase the upward shift amount; when the pressure detection value is below the preset pressure curve, increase the downward shift amount. The tea kneading machine controls the kneading pressure in real time, and records the pressure detection value of the pressure sensor 31 to obtain the pressure graph shown in FIG. 7 .

Further, the tea kneading machine includes a display 51 electrically connected to the control device 60 , and the display 51 can display the pressure detection value of the pressure sensor 31 in real time. The display 51 has a man-machine interface for easy input of control parameters. Furthermore, a warning light 52 electrically connected to the control device 60 is installed on the display 51 . The control device 60 may use a PLC controller (Programmable Logic Controller, programmable logic controller) or a single-chip microcomputer, and the tea rolling machine may be controlled in the manner shown in FIG. 5 and FIG. 6 .

As shown in FIG. 1 , the tea kneading machine includes a frame 70 , and a kneading plate 10 is fixed on the frame 70 . The kneading plate 10 is provided with ribs 11 as shown in FIG. 2 , and the ribs 11 can rub the tea leaves. A tea outlet door is provided on the kneading plate 10, and when the tea outlet door is opened, the tea leaves in the kneading barrel 20 can fall out through the tea outlet door. The tea kneading machine includes a kneading motor 82 , and the kneading motor 82 drives the connecting base 81 and the kneading barrel 20 installed on the connecting base 81 through a transmission mechanism to rotate on the kneading plate 10 .

The tea kneading machine can achieve the kneading requirements of gentle-heavy kneading-soft-air kneading by setting the kneading parameters, and the pressure of each kneading stage can be set and adjusted to ensure the kneading pressure of each kneading time period.

First, set the rotating speed of the kneading bucket 20 and the kneading pressure value in each time period on the man-machine interface. The rotating speed of the kneading bucket 20 is realized by adjusting the rotating speed of the kneading motor by the frequency converter. The pressure value in each time period is controlled by the control device 60 to control the lifting motor 41 to drive the bucket cover. 30 lifts up and down to adjust, and the pressure sensor 31 detects the pressure signal and feeds it back to the control device 60 . The specific work flow is as follows:

(1) Close all air switches, turn on the main control switch, power on the equipment, reverse the lift motor 41, and return to the highest position;

(2) Fill material;

(3) Set the upper and lower limits of the required pressure value on the operation screen, and at the same time set the working time and the speed of the kneading motor;

(4) Press the start button, the kneading motor does not work, the lifting motor 41 rotates forward, and pressurizes the material. When the pressure reaches the upper limit of the set pressure value, the lifting motor 41 stops rotating, the kneading motor starts, and the material is processed. Kneading, when the set pressure value is less than the lower limit, the lift motor 41 continues to rotate forward to pressurize the material, and when the pressure reaches the set pressure value upper limit, the lift motor 41 stops rotating and repeats the above action repeatedly;

(5) During the kneading process, the pressure value can be set by time period, and the “pressure light-heavy-light-empty” setting operation can be performed, for example, the pressure is 100N 5 minutes before starting the machine, the pressure is 200N in 5-10 minutes, and the pressure is 10-20 minutes. 300N, 200N for 20-30 minutes, pressure 0N for 30-35 minutes. The above scheme can be saved in the recipe management interface, and the recipe can be directly called up next time.

(6) When the set working time is reached, the lift motor 41 is reversed, and the reverse time can be set to 5 seconds to 10 seconds. When the set position is reached, the lift motor 41 stops rotating, and the kneading motor continues to work. When the set total working hours are reached, the kneading motor stops rotating; the lifting motor 41 continues to rotate in the reverse direction, and when the set uppermost position is reached, the lifting motor 41 stops rotating and the alarm light flashes;

The tea rolling machine includes a safety cover, and the safety cover is provided with a safety door. All the above actions must be completed when the safety door is closed; if the safety door is suddenly opened or the safety grating is blocked, all motors will stop working and stop timing. When the safety door is closed, the previous movement will continue.

After the kneading is completed, the tea outlet door on the kneading plate 10 is automatically opened, and the kneaded tea leaves enter the next process after the tea is out.

When the tea kneading machine is running, the pressure sensor 31 detects the pressure change during the kneading process, transmits the pressure signal to the control device 60, and communicates with the man-machine interface, which can display and adjust the pressure parameters through the man-machine interface. The rotating speed of the kneading bucket 20 is displayed through the communication between the frequency converter and the man-machine interface, and the rotating speed is displayed and set through the man-machine interface. All parameters are displayed on the touch screen of the monitor in real time to generate a pressure curve graph, which has the advantages of more accurate data, more intuitive display and more convenient adjustment.

Operators and tea-making technicians can test and review products rolled according to different pressure curves, and conduct content detection and on-site review for teas produced under different parameters, compare the quality of tea, and adjust parameters if necessary It can be input directly on the touch screen. It can be rolled according to the traditional process or developed and tested. The operation is convenient and the data is accurate. It can effectively solve the traditional adjustment of operating parameters only by personal perception.

Various types of tea have different requirements for rolling during the tea making process. The formula management of this scheme also provides more convenience for production in the actual use process, and avoids manual misoperation, thereby ensuring the quality.

It can monitor and adjust the kneading pressure more accurately, and quantify the optimal artificial experience value, so as to realize standardized operation and ensure product quality. The convenience of data adjustment, display and storage can be designed and developed on the basis of the existing rolling process, and the tea rolling process can be improved. It can not only fully automate the production of traditional process products, but also design and develop on the basis of the existing rolling process to improve the tea rolling process. The kneading plan including kneading parameters such as kneading pressure is stored for easy retrieval and use at any time.

(1) Alleviate the problem of adjustment based solely on manual experience, realize the standardization of rolling parameters, and quantify the optimal value of manual experience; automatically record, adjust, and display, and conduct formula management according to product quality requirements; the most manual operation can be adjusted. The excellent experience value is transformed into equipment standardized operation to ensure the stability of product quality;

(2) The kneading process is automatically completed according to the set plan, which takes less time than personnel to operate, reduces the labor intensity of personnel, and improves production efficiency;

(3) It is convenient for the collection, sorting and analysis of operating parameters such as rolling pressure, and can provide data support for optimizing the product process;

(4) Recipe management can store and form recipes for the different kneading data of each category of tea. After the quality data is determined and stored, the recipe data can be directly retrieved during production to avoid frequent manual input and reduce the risk of misoperation.

Embodiment 2

The present invention provides a barrel cover 30, which is applied to a tea rolling machine and applies a rolling pressure to the tea leaves in the barrel 20 of the tea rolling machine. As shown in FIG. 3 and FIG. 4, the barrel cover 30 includes: an upper cover seat 301 , a lower cover plate 302, a pressure sensor 31 and a plurality of springs 32, the upper cover seat 301 is installed on the lifting mechanism 40 of the tea rolling machine, the upper end of the spring 32 is connected to the upper cover seat 301, the lower cover plate 302 and the lower end of each spring 32 Connection; the pressure sensor 31 is connected between the upper cover base 301 and the lower cover plate 302 . The barrel cover 30 can make the rolling pressure of the lower cover 302 on the tea leaves more uniform, so that the pressure sensor 31 can more accurately reflect the upward pressure on the lower cover 302 and more accurately reflect the pressure on the tea leaves. The magnitude of the applied kneading pressure facilitates more accurate adjustment of the kneading pressure, and establishes a more accurate relationship between the tea quality and the kneading pressure.

Embodiment 3

The present invention provides a tea rolling method, which uses the above-mentioned tea rolling machine to control the movement amount of the elevating mechanism to drive the barrel cover 30 to move up and down according to the pressure detection value of the pressure sensor 31 . The pressure detection value of the pressure sensor 31 is transmitted to the control device 60, which is convenient for recording the rolling pressure on the tea leaves during the rolling process, so as to understand the relationship between the rolling pressure and the quality of the tea leaves, and to regulate the rolling process to improve the quality of the tea leaves. stability and improve tea quality.

Further, as shown in Figure 8, this tea leaf rolling method comprises:

Step S10, setting a preset pressure curve of the twisting pressure changing with time;

In step S20, the tea leaf rolling machine performs rolling processing on the tea leaves, and the pressure sensor 31 detects the pressure. When the pressure detection value is higher than the preset pressure value at the corresponding time point of the preset pressure curve, the upward movement of the barrel cover 30 is increased; When the value is lower than the preset pressure value at the corresponding time point of the preset pressure curve, the downward movement amount of the barrel cover 30 is increased. The tea rolling method can more accurately control the rolling pressure, improve the stability of tea quality, and improve tea quality.

The above are only a few embodiments of the present invention, and those skilled in the art can make various changes or modifications to the embodiments of the present invention according to the contents disclosed in the application documents without departing from the spirit and scope of the present invention.

Claims (11)

1. A tea leaf rolling machine, characterized by comprising:

kneading the disc;

a kneading barrel for accommodating tea leaves and capable of making a revolving motion on the kneading disc;

the barrel cover is arranged on the kneading barrel, and the lifting mechanism is used for driving the barrel cover to move up and down so as to apply kneading pressure to the tea leaves in the kneading barrel;

and a pressure sensor is arranged on the barrel cover to detect the upward pressure applied to the barrel cover.

2. The tea twisting machine according to claim 1, wherein the barrel cover includes an upper cover seat mounted to the elevating mechanism, a lower cover plate connected to the upper cover seat at an upper end thereof, and a plurality of springs connected to lower ends of the respective springs at a lower end thereof;

the pressure sensor is connected between the upper cover seat and the lower cover plate.

3. A tea leaf rolling machine according to claim 2, wherein a plurality of said springs are distributed circumferentially around said pressure sensor.

4. The tea twisting machine according to claim 3, wherein the tub cover includes a plurality of guide posts arranged in an up-down direction, and the lower cover plate is slidable along the guide posts with respect to the upper cover base;

the guide posts and the springs are alternately distributed along the circumferential direction around the pressure sensor.

5. The tea twisting machine according to claim 1, wherein the elevating mechanism comprises a vertical post, a connecting cross bar and an elevating motor, a first end of the connecting cross bar is slidably connected to the vertical post, the barrel cover is mounted to a second end of the connecting cross bar, and the elevating motor can drive the connecting cross bar to slide up and down on the vertical post.

6. The tea twisting machine according to claim 5, wherein an upper limit switch for controlling an upper limit position of the connecting cross bar and a lower limit switch for controlling a lower limit position of the connecting cross bar are provided on the column.

7. The tea rolling machine according to claim 5, comprising a control device, wherein the pressure sensor and the lifting motor are electrically connected to the control device, and the control device controls the lifting motor to drive the barrel cover to move up and down according to a pressure detection value of the pressure sensor.

8. The tea rolling machine according to claim 7, comprising a display electrically connected to the control device, the display being capable of displaying in real time a pressure detection value of the pressure sensor.

9. A barrel lid for a tea leaf rolling machine for applying rolling pressure to tea leaves in a rolling barrel of the tea leaf rolling machine, comprising: the tea leaf rolling machine comprises an upper cover seat, a lower cover plate, a pressure sensor and a plurality of springs, wherein the upper cover seat is mounted on a lifting mechanism of the tea leaf rolling machine, the upper ends of the springs are connected to the upper cover seat, and the lower cover plate is connected with the lower ends of the springs;

the pressure sensor is connected between the upper cover seat and the lower cover plate.

10. A tea leaf rolling method, characterized in that the tea leaf rolling machine according to any one of claims 1 to 8 is used, and the amount of movement of the lid to be moved up and down by the elevating mechanism is controlled based on the pressure detected by the pressure sensor.

11. A method of tea rolling according to claim 10, comprising:

step S10, setting a preset pressure curve of the twisting pressure along with the time change;

step S20, the tea rolling machine rolls tea, the pressure sensor detects the tea, and when the pressure detection value is higher than the preset pressure value of the corresponding time point of the preset pressure curve, the upward movement amount of the barrel cover is increased; and when the pressure detection value is lower than the preset pressure value of the corresponding time point of the preset pressure curve, increasing the downward movement amount of the barrel cover.

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