Automatic spreading type fermentation device for tea processing

Abstract

The invention provides an automatic spreading type fermentation device for tea processing. The automatic spreading type fermentation device comprises a fermentation box, and a conveying mechanism and a spreading mechanism which are arranged in the fermentation box, two openings with upper covers are formed in the fermentation box; the conveying mechanism comprises a plurality of flexible placing trays and a conveying assembly for circularly conveying each flexible placing tray to each opening; the conveying assembly comprises a supporting plate; the spreading mechanism comprises a stirring execution assembly and a pushing execution assembly, the stirring execution assembly is arranged at the upper end of the supporting plate and used for stirring the tea leaves in each flexible placing disc, and the pushing execution assembly is arranged at the lower end of the supporting plate and used for driving each flexible placing disc to vibrate and spreading the tea leaves in the flexible placing disc; the problems that due to structural defects of an existing tea spreading structure, tea is prone to being damaged, the appearance quality and the fermentation effect of the tea are affected, flexibility is poor, and accurate spreading is difficult to achieve are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of tea fermentation devices, and in particular relates to an automatic spreading type fermentation device for tea processing. Background Art

[0002] The processing of tea usually includes key steps such as picking, withering, killing green, rolling, fermentation and drying. Among them, the fermentation process specifically refers to the transformation of tea substances through enzymatic oxidation under suitable temperature and humidity. The core function of the fermentation process is to shape the color, aroma and taste characteristics of tea, reduce irritation, increase the content of antioxidants to enhance health functions, and the precise control of its degree directly determines the quality and flavor of tea.

[0003] At present, in order to ensure the fermentation effect of tea, spreading structures such as mechanical spreading and conveying devices and turning machines are usually used to spread the tea during fermentation. However, these existing spreading structures still have many problems: on the one hand, mechanical contact or high-speed airflow may cause the tea leaves to break, squeeze or damage the leaves, affecting the appearance quality and fermentation effect. On the other hand, the spreading uniformity is affected by factors such as design, operation and airflow, and it is difficult to achieve precise control. In addition, some structures may generate dust and impurities, posing health risks. At the same time, these structures have poor adaptability and insufficient flexibility, and it is difficult to meet the needs of different tea varieties and fermentation processes, and they are in urgent need of improvement and optimization. Summary of the invention

[0004] The purpose of the present invention is to solve the problems that the existing tea spreading structure has structural defects, which causes the tea leaves to be easily damaged, affecting its appearance quality and fermentation effect, and has poor flexibility and is difficult to achieve precise spreading.

[0005] In order to achieve the above-mentioned object, the present invention provides a fermentation box and a conveying mechanism and a spreading mechanism arranged in the fermentation box;

[0006] The fermentation box is provided with two openings, both of which have upper covers;

[0007] The conveying mechanism includes a plurality of flexible placement trays and a conveying assembly for cyclically conveying each flexible placement tray to each opening, and the conveying assembly includes a supporting plate;

[0008] The spreading mechanism includes a toggling actuator component and a pushing actuator component. The toggling actuator component is arranged at the upper end of the supporting plate to toggle the tea leaves in each flexible placement tray. The pushing actuator component is arranged at the lower end of the supporting plate to drive each flexible placement tray to vibrate and spread the tea leaves therein.

[0009] Optionally, the support plate has an open area, racks are provided on both sides of the open area along the extension direction thereof, and each rack is connected to a movable seat for driving each flexible placement plate to move along the rack.

[0010] Optionally, a gear meshing with each rack and a first motor for driving the gear to rotate are arranged in the movable seat.

[0011] Optionally, a connection block for connecting to or disconnecting from each flexible placement plate is provided on one side of the movable seat facing the open area.

[0012] Optionally, each of the flexible placement plates has a protective plate arranged along its circumference, and four connecting grooves are evenly arranged on the protective plate, and each connecting groove is used to be connected to a connecting block.

[0013] Optionally, four linear modules for driving each flexible placement plate to be lifted and lowered are symmetrically arranged in pairs at the lower end of the support plate, and a sliding frame is arranged on each linear module for supporting each flexible placement plate.

[0014] Optionally, the sliding frame is divided into a sliding portion connected to each linear module and an arc-shaped supporting portion for connecting to each flexible placement plate.

[0015] Optionally, a conveyor belt and a driving assembly are provided below the support plate, and the conveyor belt is used to receive each flexible placement plate on the arc-shaped supporting portion on one side thereof, and transport it to the arc-shaped supporting portion on the opposite side through the driving assembly.

[0016] Optionally, the toggle actuator assembly includes mechanical arms arranged on a support plate in pairs relative to each other, and the actuator ends of the mechanical arms are provided with toggle claws.

[0017] Optionally, the pushing execution component includes a bracket connected to the support plate, a third motor is arranged on the bracket, a driving end of the third motor is connected to a base, a second electric push rod and two third electric push rods are arranged on the base, the second electric push rod is provided with a push plate for pushing the middle area of the bottom of each flexible placement disk, the two third electric push rods are connected to an annular bottom plate, four push frames are evenly arranged along the circumference of the bottom plate, and each push frame is configured to be able to push the bottom of each flexible placement disk along its radial direction.

[0018] The beneficial effects of the present invention are:

[0019] The present invention proposes an automatic spreading type fermentation device for tea processing. By setting a conveying mechanism, the tea leaves in the fermentation box are circulated to each opening by using a conveying component and a plurality of flexible placement trays, so as to facilitate the feeding and discharging of the tea leaves. And by setting a spreading mechanism, the tea leaves in each flexible placement tray are moved by using a toggle actuator component and a push actuator component, and each flexible placement tray is driven to vibrate and spread the tea leaves therein. Compared with the existing tea fermentation device, the push actuator component of the present invention can spread the tea leaves without contacting them, thereby significantly reducing the damage rate of the tea leaves, so as to ensure the integrity of the tea leaves, improve their appearance quality and fermentation effect, and the present invention can realize efficient transportation and precise spreading of each flexible placement tray by combining a conveying mechanism and a spreading mechanism, and has high reliability.

[0020] Furthermore, the present invention can accurately move the tea leaves according to fermentation needs through the provision of the mechanical arm and the claws, prevent the tea leaves from piling up, and avoid damage to the appearance of the tea leaves caused by excessive mechanical contact.

[0021] Furthermore, the present invention can realize contactless and precise spreading of tea leaves through the arrangement of the second electric push rod, the third electric push rod, the push plate and each push rack, which is more flexible.

[0022] From the above content, it can be seen that the technical solution of the present invention can effectively solve the problems of the existing tea spreading structure, which has structural defects, causing the tea leaves to be easily damaged, affecting its appearance quality and fermentation effect, and poor flexibility, making it difficult to achieve precise spreading.

[0023] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention may be better understood by referring to the following description taken in conjunction with the accompanying drawings, in which the same or similar reference numerals are used throughout the drawings to represent the same or similar components.

[0025] Figure 1 A cross-sectional view of an automatic spreading type tea processing fermentation device at a first viewing angle according to an embodiment of the present invention is shown;

[0026] Figure 2 A cross-sectional view of an automatic spreading type tea processing fermentation device at a second viewing angle according to an embodiment of the present invention is shown;

[0027] Figure 3 It shows a schematic structural diagram of an automatic spreading type tea processing fermentation device according to an embodiment of the present invention;

[0028] Figure 4A schematic structural diagram of a movable seat according to an embodiment of the present invention is shown;

[0029] Figure 5 A cross-sectional view of a movable seat according to an embodiment of the present invention is shown;

[0030] Figure 6 It shows a structural schematic diagram of a toggle actuator according to an embodiment of the present invention;

[0031] Figure 7 A schematic structural diagram of a vibration actuator according to an embodiment of the present invention is shown;

[0032] Figure 8 A schematic structural diagram of a sliding frame according to an embodiment of the present invention is shown.

[0033] Reference numerals:

[0034] 1. Fermentation box; 2. Opening; 3. Flexible placement plate; 4. Support plate; 41. Open area; 5. Control panel; 6. Temperature and humidity control mechanism; 7. Rack; 8. Movable seat; 9. Gear; 10. First motor; 11. Connecting block; 12. First electric telescopic rod; 13. Guide rod; 14. Protective plate; 141. Connecting groove; 15. Linear module; 16. Sliding frame; 161. Sliding part; 162. Arc-shaped supporting part; 17. Conveyor belt; 18. Mounting plate; 19. Second motor; 20. Visual camera; 21. Robotic arm; 22. Push claw; 23. Bracket; 24. Third motor; 25. Base; 26. Second electric push rod; 27. Third electric push rod; 28. Push plate; 29. Bottom plate; 30. Push frame; 31. Base; 32. Fourth motor. DETAILED DESCRIPTION

[0035] In order to enable those skilled in the art to more fully understand the technical solution of the present invention, the exemplary embodiments of the present invention will be described in more comprehensive and detailed in conjunction with the accompanying drawings below. Obviously, the one or more embodiments of the present invention described below are only one or more of the specific ways in which the technical solution of the present invention can be implemented, and are not exhaustive. It should be understood that other ways belonging to a general inventive concept can be used to implement the technical solution of the present invention, and should not be limited by the exemplary embodiments described. Based on one or more embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present invention.

[0036] Reference Figure 1-8 , an embodiment of the present invention provides an automatic spreading type tea processing fermentation device, comprising a fermentation box 1 and a conveying mechanism and a spreading mechanism arranged in the fermentation box 1;

[0037] The fermentation box 1 is provided with two openings 2 each having an upper cover (not shown in the figure);

[0038] The conveying mechanism includes a plurality of flexible placement trays 3 and a conveying assembly for cyclically conveying each flexible placement tray 3 to each opening 2, and the conveying assembly includes a supporting plate 4;

[0039] The spreading mechanism includes a toggling actuator component and a pushing actuator component. The toggling actuator component is arranged at the upper end of the supporting plate 4 to toggle the tea leaves in each flexible placement tray 3. The pushing actuator component is arranged at the lower end of the supporting plate 4 to drive each flexible placement tray 3 to vibrate and spread the tea leaves therein.

[0040] In one embodiment, the inner diameter of each opening 2 is equal to the inner diameter of each flexible placement tray 3, so as to ensure that the tea leaves entering the fermentation box through each opening can fall into each flexible placement tray. At the same time, it is also convenient to fully take out the fermented tea leaves in each flexible placement tray.

[0041] In a specific embodiment, a control panel 5 is provided on the fermentation box 1, and a control end of the control panel 5 is connected to a controller to realize electrical control of the fermentation box and the conveying mechanism and the spreading mechanism therein.

[0042] In a specific embodiment, the upper cover is a column that is adapted to the structure of each opening and has a handle.

[0043] Specifically, the two openings are used for feeding and discharging tea leaves, or for feeding or discharging tea leaves at the same time. The upper cover can be used to seal the tea leaves, and the upper cover can be used to closely connect the tea leaves to the external rolling device and the external drying device, so as to prevent external impurities or excessive air from entering the fermentation box, thereby ensuring the fermentation effect of the tea leaves.

[0044] In one embodiment, a temperature and humidity control mechanism 6 for regulating the fermentation environment is provided in the fermentation box 1. Specifically, the temperature and humidity control mechanism is mainly composed of a sensor, a controller, an actuator and a ventilation component. The sensor, as a sensing unit, includes a temperature sensor and a humidity sensor, which can capture the temperature and humidity data in the fermentation box in real time, and convert this information into an electrical signal and transmit it to the controller. After receiving the sensor signal, the controller compares it with the preset temperature and humidity values, and outputs a control instruction based on the deviation. The actuator, according to the instructions of the controller, increases the temperature through a heating device, lowers the temperature through a refrigeration device, increases the humidity through a humidifying device, and reduces the humidity through a dehumidifying device, so as to accurately control the fermentation environment. At the same time, the ventilation components work together to promote air circulation, ensure that the temperature and humidity are evenly distributed in the fermentation box, and avoid local differences affecting the fermentation effect. The above-mentioned structure and working principle of the temperature and humidity control mechanism are all prior art, and will not be described in detail here.

[0045] In a specific embodiment, each flexible placement disc 3 is a disc-shaped structure made of rubber or silica gel. Of course, it should be realized that each flexible placement disc can also be made of other materials. The present invention is not limited thereto, and any material that can achieve the same technology as the present invention is also within the protection scope of the present invention.

[0046] In a specific embodiment, the thickness range of each flexible placement disc 3 is 4 - 10 mm. So that it can meet the requirements of carrying tea leaves and vibrating under the drive of the pushing execution component, while also having good durability and stability, and being suitable for long-term use.

[0047] In one embodiment, the support plate 4 has an open area 41 inside, and racks 7 are arranged on both sides of the open area 41 along its extending direction. A movable seat 8 for driving each flexible placement disc 3 to move along the rack is connected to each rack 7.

[0048] In a specific embodiment, a gear 9 meshing with each rack 7 and a first motor 10 for driving the gear 9 to rotate are arranged inside the movable seat 8.

[0049] In one embodiment, a connecting block 11 for connecting or disconnecting from each flexible placement disc 3 is arranged on one side of the movable seat 8 facing the open area 41.

[0050] In a specific embodiment, a first electric telescopic rod 12 is connected to the connecting block 11, and the other end of the first electric telescopic rod 12 is connected to the movable seat 8.

[0051] Specifically, the connecting block can be driven by the first electric telescopic rod to connect with each flexible placement disc located in the open area, so as to drive it to move along the rack through the movable seat, and realize the transportation of tea leaves.

[0052] In one embodiment, a guide rod 13 for guiding the movement of the movable seat 8 is arranged on one side of each rack 7.

[0053] In one embodiment, a protective plate 14 is arranged along the circumferential side of each flexible placement disc 3, and four connecting grooves 141 are evenly arranged on the protective plate 14. Each connecting groove 141 is used for connecting with the connecting block 11.

[0054] In one embodiment, four linear modules 15 for driving each flexible placement disc 3 to lift are symmetrically arranged in pairs at the lower end of the support plate 4.

[0055] In one embodiment, a sliding frame 16 is arranged on each linear module 15, and the sliding frame 16 is used for supporting each flexible placement disc 3.

[0056] In a specific embodiment, the sliding frame 16 is divided into a sliding portion 161 connected to each linear module 15 and an arc-shaped supporting portion 162 for connecting to each flexible placement plate 3 .

[0057] Specifically, when each flexible placement plate moves to above the arc-shaped supporting portion, the arc-shaped supporting portion can move upward under the drive of the linear module to support each flexible placement plate, and can drive each flexible placement plate to move downward after the connecting block moves out of the connecting groove.

[0058] In one embodiment, a conveyor belt 17 and a driving assembly are provided below the support plate 4. The conveyor belt 17 is used to receive each flexible placement plate 3 on the arc-shaped supporting portion 162 on one side thereof and convey it to the arc-shaped supporting portion 162 on the opposite side through the driving assembly.

[0059] In a specific embodiment, the driving assembly includes a mounting plate 18, a second motor 19 disposed on the mounting plate 18, an active roller connected to the transmission end of the second motor 19, and a driven roller disposed on the mounting plate 18 on the opposite side of the active roller. The two ends of the conveyor belt 17 are respectively mounted on the active roller and the driven roller.

[0060] In addition, the distance between the two relatively arranged arc-shaped supporting parts is greater than the width of the conveyor belt, and the height of the upper surface of the conveyor belt is greater than the height of the arc-shaped supporting parts when they move to the lowest end, so as to ensure that each flexible placement plate can be placed horizontally on the conveyor belt.

[0061] In one embodiment, each flexible placement tray 3 is provided with a visual camera 20 for detecting the fermentation state of the tea leaves therein. Specifically, the visual camera captures the image of the tea leaves during the fermentation process through the lens, converts the optical signal into an electrical signal, and then generates a digital image. Subsequently, the color, shape, texture and other features of the tea leaves in the image are extracted and analyzed using a pre-trained image analysis algorithm. These features can reflect the degree of fermentation of the tea leaves, such as changes in the depth of color, the degree of stretch of the shape, etc. The algorithm will compare the changes in these features with the preset fermentation standards to determine whether the fermentation state of the tea leaves meets expectations, and feed back the judgment results to the controller, so that the tea fermentation environment can be accurately regulated to achieve better fermentation effects.

[0062] In one embodiment, the toggle actuator assembly includes mechanical arms 21 disposed on the support plate 4 in pairs opposite to each other, and the actuator ends of the mechanical arms 21 are provided with toggle claws 22 .

[0063] In a specific embodiment, the robotic arm 21 is a three-axis robotic arm.

[0064] Specifically, the robotic arm can drive the pawls to move towards each flexible placement tray 3 within its movement range to stir the tea leaves inside, prevent the tea leaves from piling up, and have an adverse effect on its fermentation effect.

[0065] In one embodiment, the pushing execution component includes a bracket 23 connected to the support plate 4. A third motor 24 is provided on the bracket 23. The transmission end of the third motor 24 is connected to a base 25. A second electric push rod 26 and two third electric push rods 27 are provided on the base 25. A push plate 28 for pushing the middle area of the bottom of each flexible placement tray 3 is provided on the second electric push rod 26. A ring-shaped bottom plate 29 is connected to the two third electric push rods 27. Four push frames 30 are evenly arranged along the circumference of the bottom plate 29. Each push frame 30 is configured to be able to push the bottom of each flexible placement tray 3 along its radial direction.

[0066] In a specific embodiment, a base 31 is connected to the lower end of each push frame 30. A fourth motor 32 for driving each push frame 30 to rotate is provided on the base 31.

[0067] Specifically, each push frame can be at a certain angle with the bottom plate under the drive of the fourth motor, and under the drive of the two third electric push rods, it can contact different positions of the bottom of each flexible placement tray to push each flexible placement tray to vibrate, so as to realize the paving of the tea leaves inside.

[0068] In addition, two adjacent or opposite push frames can be set to have different diameters and / or different angles, such as perpendicular or at a certain included angle, etc., so as to adjust the pushing force and distribution according to the requirements of different fermentation stages, optimize the vibration effect of the flexible placement tray, and improve the flexibility and adaptability of the pushing execution component.

[0069] Specifically, the first electric push rod, the second electric push rod, and the third electric push rod all include components such as an internal motor, a push rod, a lead screw, a nut, and a guide sleeve. Its working principle is that the internal motor drives the lead screw to rotate through a reduction gear or a worm and worm gear transmission. The nut on the lead screw moves linearly along the lead screw under the restriction of the guide sleeve, thereby driving the push rod to expand and contract. And the internal motor is electrically connected to the controller so that the controller can accurately control the forward and reverse rotation and speed of the internal motor according to the input signal, and realize the accurate adjustment of the push rod stroke, speed, and force.

[0070] In a specific embodiment, the control ends of the first motor 10, the second motor 19, the third motor 24, and the fourth motor 32 are all electrically connected to the controller, so that the controller can accurately control the four motors.

[0071] The usage method of the fermentation device of the present invention is as follows:

[0072] First, each flexible placement tray can be driven to move to the bottom of the two openings in turn, and then the two openings or any one of the two openings are selected to feed the tea leaves, so as to place the tea leaves in each flexible placement tray;

[0073] Then, each opening is closed by the cover body, and the temperature and humidity control mechanism is activated to adjust the fermentation environment in the fermentation box so that the tea leaves in each flexible placement tray can be fermented;

[0074] Then, during the fermentation process, each flexible placement tray can be moved to the toggle actuator and the push actuator in turn, so as to drive the toggle claw, the push plate and / or each push frame to spread the tea leaves in each flexible placement tray according to the detection results of the visual camera, wherein the push plate can repeatedly push the bottom of each flexible placement tray under the drive of the second electric push rod, so that the tea leaves in each flexible placement tray are vibrated by force and diffused toward its inner wall to achieve spreading; and each push frame can not only repeatedly push the bottom of each flexible placement tray under the drive of the third electric push rod, but also push the bottom of each flexible placement tray circumferentially under the drive of the third motor. In addition, each push frame can also be driven by the fourth motor to form a specific angle with the bottom of each flexible placement tray, so as to push any position of the bottom of each flexible placement tray according to the fermentation needs.

[0075] Finally, each flexible placement plate can be driven again to move to the bottom of the two openings in turn, and then the two openings or any one of the two openings can be selected to discharge the fermented tea leaves.

[0076] The present invention proposes an automatic spreading type fermentation device for tea processing. By setting a conveying mechanism, the tea leaves in the fermentation box are circulated to each opening by using a conveying component and a plurality of flexible placement trays, so as to facilitate the feeding and discharging of the tea leaves. And by setting a spreading mechanism, the tea leaves in each flexible placement tray are moved by using a toggle actuator component and a push actuator component, and each flexible placement tray is driven to vibrate and spread the tea leaves therein. Compared with the existing tea fermentation device, the push actuator component of the present invention can spread the tea leaves without contacting them, thereby significantly reducing the damage rate of the tea leaves, so as to ensure the integrity of the tea leaves, improve their appearance quality and fermentation effect, and the present invention can realize efficient transportation and precise spreading of each flexible placement tray by combining a conveying mechanism and a spreading mechanism, and has high reliability.

[0077] Furthermore, the present invention can accurately move the tea leaves according to fermentation needs through the provision of the mechanical arm and the claws, prevent the tea leaves from piling up, and avoid damage to the appearance of the tea leaves caused by excessive mechanical contact.

[0078] Furthermore, through the settings of the second electric push rod, the third electric push rod, the push plate and each push frame, the present invention can achieve non-contact and precise paving of tea leaves, which is more flexible.

[0079] In summary, the fermentation device of the present invention has made remarkable progress compared with the existing tea fermentation devices. It can meet the requirements of different tea varieties and fermentation processes, and has strong adaptability.

[0080] Although one or more embodiments of the present invention have been described above, those of ordinary skill in the art should understand that the present invention can be implemented in any other form without departing from its gist and scope. Therefore, the above-described embodiments are illustrative rather than restrictive, and many modifications and substitutions are obvious to those of ordinary skill in the art without departing from the spirit and scope of the present invention as defined by the appended claims.

Claims

1. An automatic spreading type fermentation device for tea processing, characterized in that, It includes a fermentation box and a conveying mechanism and a spreading mechanism arranged in the fermentation box; The fermentation box is provided with two openings, both of which have upper covers; The conveying mechanism includes a plurality of flexible placement trays and a conveying assembly for cyclically conveying each flexible placement tray to each opening, and the conveying assembly includes a supporting plate; The spreading mechanism includes a toggling actuator component and a pushing actuator component. The toggling actuator component is arranged at the upper end of the supporting plate to toggle the tea leaves in each flexible placement tray. The pushing actuator component is arranged at the lower end of the supporting plate to drive each flexible placement tray to vibrate and spread the tea leaves therein.

2. The automatic paving type fermentation device for tea processing according to claim 1, wherein, The support plate has an open area inside, and racks are arranged on both sides of the open area along the extension direction thereof, and each rack is connected to a movable seat for driving each flexible placement plate to move along the rack.

3. The automatic paving type fermentation device for tea processing according to claim 2, characterized in that, The movable seat is provided with a gear meshing with each rack and a first motor for driving the gear to rotate.

4. The automatic paving type fermentation device for tea processing according to claim 3, characterized in that, A connection block for connecting with or disconnecting from each flexible placement plate is arranged on one side of the movable seat facing the open area.

5. The automatic paving type fermentation device for tea processing according to claim 4, characterized in that, Each flexible placement plate has a protective plate arranged along its circumference, and four connecting grooves are evenly arranged on the protective plate, and each connecting groove is used to be connected to a connecting block.

6. The automatic paving type fermentation device for tea processing according to claim 5, wherein, Four linear modules for driving each flexible placement plate to be lifted and lowered are symmetrically arranged in pairs at the lower end of the support plate. A sliding frame is arranged on each linear module, and the sliding frame is used to support each flexible placement plate.

7. The automatic paving type fermentation device for tea processing according to claim 6, wherein, The sliding frame is divided into a sliding part connected to each linear module and an arc-shaped supporting part used to be connected to each flexible placement plate.

8. The automatic paving type fermentation device for tea processing according to claim 7, wherein A conveyor belt and a driving assembly are arranged below the support plate. The conveyor belt is used to receive each flexible placement plate on the arc-shaped supporting portion on one side thereof and convey it to the arc-shaped supporting portion on the opposite side through the driving assembly.

9. The automatic paving type fermentation device for tea processing according to claim 8, characterized in that, The toggle actuator assembly comprises mechanical arms arranged on a support plate in pairs relative to each other, and the actuator ends of the mechanical arms are provided with toggle claws.

10. The automatic paving type fermentation device for tea processing according to claim 9, characterized in that, The pushing execution component includes a bracket connected to the support plate, a third motor is arranged on the bracket, a driving end of the third motor is connected to a base, a second electric push rod and two third electric push rods are arranged on the base, the second electric push rod is provided with a push plate for pushing the middle area of the bottom of each flexible placement disk, the two third electric push rods are connected to an annular bottom plate, four push frames are evenly arranged along the circumference of the bottom plate, and each push frame is configured to be able to push the bottom of each flexible placement disk along its radial direction.

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