A blueberry packaging device and its method

Abstract

The present invention provides a blueberry packaging device and a method thereof, relating to the field of blueberry packaging. It includes a feeding mechanism for weighing and distributing blueberry fruits and a packaging mechanism for boxing the blueberry fruits. The packaging mechanism includes a housing, a driving mechanism, a packaging box rack, an input conveyor belt, a box sealing mechanism, an adjustable conveyor belt and an output conveyor belt. A plurality of groups of packaging box racks are distributed in a circular array inside the housing, and the packaging box racks are driven to rotate by the driving mechanism; by setting a plurality of groups of rotating packaging box racks, the packaging boxes are limited and supported by the packaging box racks, and the blueberries are filled into the packaging boxes in turn by means of rotation, while reducing the interval time of blueberry filling. At the same time, the input of the packaging boxes, the filling of blueberries and the output of the packaging boxes of this device are carried out at the same time. This method greatly reduces the time of the entire process and further increases the packaging rate of this device.

Description

Technical Field

[0001] The present invention relates to the technical field of blueberry packaging, and in particular to a blueberry packaging device and method thereof. Background Art

[0002] A blueberry packaging device is a device for packaging blueberries. Blueberry fruits contain rich nutritional components, which have functions such as preventing brain nerve aging, protecting eyesight, strengthening the heart, anti-cancer, softening blood vessels, and enhancing the body's immunity, and have high nutritional components. Among them, because blueberries are rich in anthocyanins, they have the effect of activating the retina, can strengthen eyesight, and prevent eye fatigue, thus attracting much attention.

[0003] With the improvement of the degree of automation, more and more blueberry automatic packaging devices have come into the view of blueberry manufacturers. The principle of these packaging devices is to drive the packaging box to move under the blueberry sorting and weighing structure through a conveyor belt, and then load and pack the blueberries into the box and transport them to the labeling place for labeling. As the number of blueberries loaded and packed in a single time increases, the interval time for re-packaging will increase. Therefore, the present invention proposes a blueberry packaging device and method to further increase the packaging speed of blueberries. Summary of the Invention

[0004] In view of the above problems, the present invention proposes a blueberry packaging device and method. The blueberry packaging device and method limit and support the packaging box through a plurality of rotating packaging box frames, and sequentially fill the blueberries into the packaging box in a rotating manner, while reducing the interval time for blueberry filling. At the same time, the input of the packaging box, the filling of blueberries, and the output of the packaging box of this device are carried out at the same time. This method greatly reduces the time of the entire process and further increases the packaging rate of this device.

[0005] To achieve the purpose of the present invention, the present invention is realized through the following technical solutions: A blueberry packaging device includes a feeding mechanism for weighing and dividing blueberry fruits and a packaging mechanism for loading blueberries into boxes. The packaging mechanism includes a housing, a driving mechanism, a packaging box frame, an input conveyor belt, a box sealing mechanism, an adjustable conveyor belt, and an output conveyor belt. A plurality of groups of packaging box frames are distributed in a circular array inside the housing. The packaging box frames are driven to rotate by the driving mechanism. The number of the packaging box frames is 2 nThere are n groups, where n is a positive integer and n > 1. At the bottom of the lowermost group of the packaging box racks, there is an input conveyor belt for feeding the packaging boxes into the packaging box racks. The uppermost group of the packaging box racks is connected to the feeding mechanism at the top of the outer shell. At the bottom of the outermost group of the packaging box racks, there is an adjustable conveyor belt for removing the packaging boxes from the packaging box racks. One end of the adjustable conveyor belt is provided with an output conveyor belt for removing the packaging boxes from the outer shell. On the outer wall of the inner wall of the outer shell near the inner end of the output conveyor belt, there is a box sealing mechanism for sealing the packaging boxes.

[0006] A further improvement lies in that: the driving mechanism includes a programmable motor, a turntable and a connecting plate. One end of the programmable motor is fixedly connected to the inner wall of the outer shell. The output end of the programmable motor is fixed with a turntable. Multiple groups of connecting plates are fixed on the outer wall of the turntable. The number of the connecting plates is equal to that of the packaging box racks and is rotationally connected to the packaging box racks.

[0007] A further improvement lies in that: the packaging box rack includes a counterweight ball, a connecting shaft, a connecting block, an adjustment chamber, a first adjustment component, a support bar and an opening rod. The top of the adjustment chamber is fixed with a connecting block. One end of the connecting shaft passes through the connecting plate through a bearing and is fixedly connected to the connecting block. The other end of the connecting shaft is fixedly connected to the counterweight ball. The adjustment chamber is symmetrically provided with support bars on one side. Inside the adjustment chamber, there is a first adjustment component for adjusting the distance between the two support bars. An opening rod for opening the lid of the packaging box is provided on one group of the support bars.

[0008] A further improvement lies in that: the opening rod includes a first electric telescopic rod, a fixed block and a flat strip. The first electric telescopic rod is fixed on the side wall of the support bar near one end of the adjustment chamber through the fixed block. The output end at the top of the first electric telescopic rod is fixed with a flat strip. The flat strip is inserted at the connection between the packaging box and the lid of the packaging box.

[0009] A further improvement lies in that: the adjustable conveyor belt includes a conveyor belt group, a hydraulic cylinder, a through groove and an installation chamber. The side wall of the outer shell is fixed with an installation chamber. Hydraulic cylinders are symmetrically arranged inside the installation chamber. A through groove is provided at the connection between the outer shell and the installation chamber. The output end of the hydraulic cylinder passes through the through groove and is fixedly connected to the side wall of the conveyor belt group.

[0010] A further improvement lies in that: the height of the through groove is greater than the height of the conveyor belt group.

[0011] A further improvement lies in that: the box sealing mechanism includes a box sealing plate, a second electric telescopic rod, a sealing strip, a third electric telescopic rod and a second adjustment assembly. The box sealing plate is located directly above the output conveyor belt. Second electric telescopic rods are symmetrically arranged at the top of the box sealing plate, and the second electric telescopic rods are fixedly connected to the inner wall of the housing. A fixed bin is provided at the outer end of the box sealing plate. Third electric telescopic rods are symmetrically arranged on one side of the fixed bin. A second adjustment assembly for adjusting the distance between the two groups of third electric telescopic rods is provided in the fixed bin. A sealing strip is fixed to the lower end of the third electric telescopic rod.

[0012] A further improvement lies in that: the first adjustment assembly and the second adjustment assembly have the same structure, and both include a bidirectional screw rod, a driving motor, a sliding groove and a connecting sleeve. The bidirectional screw rod is rotatably installed inside the adjustment bin, the bidirectional screw rod is driven by the driving motor, connecting sleeves are symmetrically arranged on the bidirectional screw rod, and one end of the connecting sleeve penetrates through the sliding groove.

[0013] A further improvement lies in that: the number of the packaging box racks is 8 groups.

[0014] Using the above blueberry packaging equipment, the packaging method includes the following steps;

[0015] S1. During the first packaging, empty packaging boxes are sent into the housing through the input conveyor belt and are successively sent onto the packaging box racks. At the same time, the flat strips are inserted at the connection between the packaging box and the packaging box lid. After a certain period of time, when the packaging box racks are fully loaded, the input conveyor belt stops working. The programmable motor drives the turntable to rotate, thereby driving the packaging box racks to rotate by 45°. At this time, the programmable motor stops working and locks itself. Then the input conveyor belt continues to work to load another group of packaging box racks. After a certain period of time, the input conveyor belt stops working. After repeating the above loading process three times, the packaging box racks that were loaded first move to the topmost position.

[0016] S2. At this time, by starting the first electric telescopic rod on the topmost packaging box rack, the first electric telescopic rod pushes the flat strip upward, thereby completely opening the packaging box lid to facilitate the feeding mechanism to fill blueberries into the packaging box. After the feeding mechanism finishes working, the flat strip is moved downward to reset the packaging box lid.

[0017] S3. Then the programmable motor drives the turntable to rotate, thereby realizing the synchronous progress of the feeding of the packaging boxes and the filling of blueberries. When the packaging box to be filled is about to move to the outermost side, at this time, the hydraulic cylinder pushes the adjustable conveyor belt out, thereby realizing the synchronous progress of the feeding of the packaging boxes, the filling of blueberries and the sending out of the filled packaging boxes. When the packaging box is completely sent out, the hydraulic cylinder then pulls back the adjustable conveyor belt to ensure the rotation of the packaging box racks.

[0018] S4. During the output process of the output conveyor belt for the packaging boxes, as the packaging box passes by the box sealing plate, the lid of the packaging box is gradually pressed by the box sealing plate as the packaging box moves. At the same time, the edge sealing strip also presses the edge of the packaging box, causing the lid of the packaging box to engage with the packaging box, and finally it is sent out of the packaging mechanism.

[0019] The beneficial effects of the present invention are as follows: By setting multiple groups of rotating packaging box frames, the packaging box frames are used to limit and support the packaging boxes. Through the rotating method, the blueberries are filled into the packaging boxes in sequence, while reducing the interval time of blueberry filling. At the same time, the input of the packaging boxes, the filling of blueberries, and the output of the packaging boxes of this device are carried out simultaneously. This method greatly reduces the time of the entire process, further increasing the packaging rate of this device. Moreover, the packaging box frame of this device is provided with a counterweight ball in cooperation with a connecting shaft, an adjustment bin, and a support bar, ensuring the stability of the packaging box during rotation, further enhancing the use effect of this device. At the same time, the packaging box frame of this device is provided with a first adjustment component. Through the adjustment of the first adjustment component, the packaging box frame can support packaging boxes of different widths. In cooperation with the second adjustment component and the edge sealing strip on the encapsulation plate, the edges of packaging boxes of different widths can be sealed, further increasing the applicable range of this device. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the present invention.

[0021] Figure 2 is the structural schematic diagram of the guarantee mechanism of the present invention.

[0022] Figure 3 is the structural schematic diagram of the driving mechanism of the present invention.

[0023] Figure 4 is the structural schematic diagram of the packaging box frame of the present invention.

[0024] Figure 5 is the structural schematic diagram of the opening rod of the present invention.

[0025] Figure 6 is the position schematic diagram of the input conveyor belt, adjustable conveyor belt, and output conveyor belt of the present invention.

[0026] Figure 7 is the structural schematic diagram of the box sealing mechanism of the present invention.

[0027] Figure 8 is the cross-sectional view of the first adjustment and second adjustment components of the present invention.

[0028] Among them: 1. Feeding mechanism; 2. Packaging mechanism; 3. Outer shell; 4. Packaging box rack; 5. Input conveyor belt; 6. Adjustable conveyor belt; 7. Output conveyor belt; 8. Box sealing mechanism; 9. Programmable motor; 10. Turntable; 11. Connecting plate; 12. Counterweight ball; 13. Connecting shaft; 14. Connecting block; 15. Adjusting bin; 16. Support bar; 17. Opening rod; 18. First electric telescopic rod; 19. Fixed block; 20. Flat strip; 21. Conveyor belt group; 22. Hydraulic cylinder; 23. Through groove; 24. Installation bin; 25. Box sealing plate; 26. Second electric telescopic rod; 27. Sealing edge strip; 28. Third electric telescopic rod; 29. Bidirectional screw; 30. Driving motor; 31. Slide groove; 32. Connecting sleeve; 33. Fixed bin. Specific implementation mode

[0029] To deepen the understanding of the present invention, the following will further elaborate on the present invention in combination with embodiments. These embodiments are only used to explain the present invention and do not constitute a limitation on the protection scope of the present invention.

[0030] According to Figures 1-8 As shown, this embodiment proposes a blueberry packaging device, which includes a feeding mechanism 1 for weighing and distributing blueberry fruits and a packaging mechanism 2 for boxing blueberry fruits. The packaging mechanism 2 includes an outer shell 3, a driving mechanism, a packaging box rack 4, an input conveyor belt 5, a box sealing mechanism 8, an adjustable conveyor belt 6 and an output conveyor belt 7. A plurality of groups of packaging box racks 4 are distributed in a circular array inside the outer shell 3. The packaging box racks 4 are driven to rotate by a driving mechanism. The number of the packaging box racks 4 is 2 n pieces, where n is a positive integer and n>1. At the bottom of the lowest group of the packaging box racks 4, there is an input conveyor belt 5 for sending the packaging box into the packaging box rack 4. The topmost group of the packaging box racks 4 is connected to the feeding mechanism 1 at the top of the outer shell 3. At the bottom of the outermost group of the packaging box racks 4, there is an adjustable conveyor belt 6 for moving the packaging box out of the packaging box rack 4. One end of the adjustable conveyor belt 6 is provided with an output conveyor belt 7 for moving the packaging box out of the outer shell 3. On the outer wall of the inner wall of the outer shell 3 near the inner end of the output conveyor belt 7, there is a box sealing mechanism 8 for sealing the packaging box;

[0031] The packaging box proposed in this device is a rectangular packaging box made of plastic. One end between the packaging box and the box cover is the connection end and can rotate along this end, while the other end and the rest of the edges can be fixed by clamping. In this device, the outer shell 3 wraps and protects the entire structure. Multiple sets of packaging box frames 4 arranged in a circular array are used to support the packaging boxes, and the driving mechanism is used to rotate multiple sets of packaging box frames 4, so as to achieve the purpose of rotating multiple different packaging box frames 4. Since the packaging boxes on the packaging box frames 4 are pre-stacked, the interval time between two material feedings of the feeding mechanism 1 is greatly reduced through the rotation method, further increasing the packaging efficiency of this device. To ensure the delivery of the packaging boxes on the packaging box frames 4 in this device, the number of packaging box frames 4 should be set to 2 n pieces, where n is a positive integer and n > 1, and it is preferably set to eight groups. When the eight groups of packaging box frames 4 rotate, the driving mechanism only needs to drive the packaging box frames 4 to rotate 45° to complete one operation. When the packaging box frame 4 at the bottom is loading the packaging box, the packaging box at the top is filling blueberries, and the packaging box at the leftmost or rightmost side is sent out by the adjustable conveyor belt 6 in cooperation with the output conveyor belt 7 and passes through the box sealing mechanism 8 during the output process, and the box sealing mechanism 8 clamps and fixes the packaging box and the box cover.

[0032] The driving mechanism includes a programmable motor 9, a turntable 10 and a connecting plate 11. One end of the programmable motor 9 is fixedly connected to the inner wall of the outer shell 3, the output end of the programmable motor 9 is fixed with a turntable 10, multiple sets of connecting plates 11 are fixed on the outer wall of the turntable 10, and the number of the connecting plates 11 is equal to that of the packaging box frames 4 and is rotatably connected to the packaging box frames 4.

[0033] The driving mechanism in this device uses the programmable motor 9 as the power source. By programming, the motor can start and stop precisely, so as to ensure that the packaging box frames 4 can rotate stably. The programmable motor 9 drives the turntable 10 to rotate, and the turntable 10 drives the packaging box frames 4 to rotate through the connecting plates 11, so as to achieve the purpose of rotation.

[0034] The packaging box frame 4 includes a counterweight ball 12, a connecting shaft 13, a connecting block 14, an adjustment chamber 15, a first adjustment component, a support bar 16 and an opening rod 17. A connecting block 14 is fixed on the top of the adjustment chamber 15. One end of the connecting shaft 13 passes through the connecting plate 11 through a bearing and is fixedly connected to the connecting block 14. The other end of the connecting shaft 13 is fixedly connected to the counterweight ball 12. Support bars 16 are symmetrically arranged on one side of the adjustment chamber 15. A first adjustment component for adjusting the distance between the two support bars 16 is arranged inside the adjustment chamber 15. An opening rod 17 for opening the box cover of the packaging box is arranged on one group of the support bars 16.

[0035] To further ensure the stability of the packaging box during rotation, this device is rotatably connected between the connecting shaft 13 and the connecting plate 11. At the same time, with the cooperation of the counterweight ball 12, when the packaging box rack 4 rotates, the opening of the packaging box can always face upward, avoiding the inclination of the packaging box. At the same time, an adjustment bin 15, support bars 16 and an opening rod 17 are also provided on the packaging box rack 4. The adjustment bin 15 can cooperate with the first adjustment component to adjust the distance between the two groups of support bars 16, so that the packaging box rack 4 can support and limit packaging boxes of different widths, further increasing the scope of application of this device. The setting of the opening rod 17 is used to adjust the position of the packaging box lid, so that the packaging box lid will not affect the filling when filling blueberries.

[0036] The opening rod 17 includes a first electric telescopic rod 18, a fixed block 19 and a flat strip 20. The first electric telescopic rod 18 is fixed on the side wall of the support bar 16 near one end of the adjustment bin 15 through the fixed block 19. The output end at the top of the first electric telescopic rod 18 is fixed with a flat strip 20, and the flat strip 20 is inserted at the connection between the packaging box and the packaging box lid.

[0037] The opening rod 17 pushes the flat strip 20 upward through the first electric telescopic rod 18, thereby driving the opening of the packaging box lid, and further ensuring that blueberries can be poured into the packaging box.

[0038] The adjustable conveyor belt 6 includes a conveyor belt group 21, a hydraulic cylinder 22, a through groove 23 and an installation bin 24. The side wall of the housing 3 is fixed with the installation bin 24. The hydraulic cylinders 22 are symmetrically arranged in the installation bin 24. A through groove 23 is provided at the connection between the housing 3 and the installation bin 24. The output end of the hydraulic cylinder 22 passes through the through groove 23 and is fixed to the side wall of the conveyor belt group 21.

[0039] The adjustable conveyor belt 6 is driven by the hydraulic cylinder 22. The hydraulic cylinder 22 drives the conveyor belt group 21 to move, thereby adjusting the position of the conveyor belt group 21. When the conveyor belt group 21 extends, the conveyor belt group 21 cooperates with the output conveyor belt 7 to send out the packaging box. When the conveyor belt group 21 retracts, the packaging box rack 4 rotates normally.

[0040] The height of the through groove 23 is greater than the height of the conveyor belt group 21.

[0041] The box sealing mechanism 8 includes a box sealing plate 25, a second electric telescopic rod 26, a sealing strip 27, a third electric telescopic rod 28 and a second adjustment component. The box sealing plate 25 is located directly above the output conveyor belt 7. Symmetrically arranged on the top of the box sealing plate 25 are second electric telescopic rods 26, which are fixedly connected to the inner wall of the housing 3. One end of the box sealing plate 25 near the outside is provided with a fixed bin 33. Symmetrically arranged on one side of the fixed bin 33 are third electric telescopic rods 28. Inside the fixed bin 33 is a second adjustment component for adjusting the distance between the two third electric telescopic rods 28. Fixed to the lower end of the third electric telescopic rod 28 is a sealing strip 27.

[0042] The box sealing mechanism 8 presses the box lid of the packaging box firmly through the box sealing plate 25, and makes the box lid engage with the edge of the packaging box by extrusion, so as to fix the box lid to the packaging box. The design of the sealing strip 27 further ensures the stability of the engagement at the edge. The setting of the second adjustment component enables the sealing strip 27 to seal packaging boxes of different widths, further increasing the application range of this device.

[0043] The first adjustment component and the second adjustment component have the same structure, and both include a bidirectional screw 29, a driving motor 30, a sliding groove 31 and a connecting sleeve 32. The bidirectional screw 29 is rotatably installed inside the adjustment bin 15. The bidirectional screw 29 is driven by the driving motor 30. Symmetrically arranged on the bidirectional screw 29 are connecting sleeves 32. One end of the connecting sleeve 32 penetrates through the sliding groove 31.

[0044] The driving motor 30 drives the bidirectional screw 29 to rotate, so that the connecting sleeve 32 moves on the bidirectional screw 29, and the sliding groove 31 limits the connecting sleeve 32 to ensure the stable displacement of the other end of the connecting sleeve 32.

[0045] Using the above blueberry packaging equipment, the packaging method includes the following steps;

[0046] S1. During the first packaging, the empty packaging boxes are sent into the housing 3 through the input conveyor belt 5 and are successively sent onto the packaging box racks 4. At the same time, the flat strips 20 are inserted at the connection between the packaging boxes and the box lids. After a certain period of time, when the packaging box racks 4 are fully loaded, the input conveyor belt 5 stops working. The programmable motor 9 drives the turntable 10 to rotate, thereby driving the packaging box racks 4 to rotate by 45°. At this time, the programmable motor 9 stops working and locks itself. Then the input conveyor belt 5 continues to work to load another group of packaging box racks 4. After a certain period of time, the input conveyor belt 5 stops working. After repeating the above loading process three times, the packaging box racks 4 that are loaded for the first time move to the topmost position;

[0047] S2. At this time, the first electric telescopic rod 18 on the uppermost packaging box rack 4 is activated, and the first electric telescopic rod 18 pushes the flat strip 20 upward, thereby completely opening the packaging box lid, facilitating the feeding mechanism 1 to fill blueberries into the packaging box. After the feeding mechanism 1 finishes working, the flat strip 20 is lowered again to reset the packaging box lid;

[0048] S3. Then, the programmable motor 9 drives the turntable 10 to rotate, thereby realizing the simultaneous feeding of the packaging box and the filling of blueberries. When the filled packaging box is about to move to the outermost side, at this time, the hydraulic cylinder 22 pushes the adjustable conveyor belt 6 out, thereby realizing the simultaneous feeding of the packaging box, the filling of blueberries, and the sending out of the filled packaging box. After the packaging box is completely sent out, at this time, the hydraulic cylinder 22 pulls the adjustable conveyor belt 6 back to ensure the rotation of the packaging box rack 4;

[0049] S4. During the output process of the output conveyor belt 7, the packaging box passes through the sealing plate 25. As the packaging box moves, the lid of the packaging box is gradually pressed by the sealing plate 25. At the same time, the sealing strip 27 also presses the edge of the packaging box, making the lid of the packaging box engage with the packaging box, and finally it is sent out of the packaging mechanism 2.

[0050] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the descriptions in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention will have various changes and improvements, and these changes and improvements all fall within the scope of the present invention claimed. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A blueberry packaging device, comprising a feeding mechanism (1) for weighing and distributing blueberry fruits and a packaging mechanism (2) for boxing the blueberry fruits, characterized in that: The packaging mechanism (2) includes a housing (3), a driving mechanism, a packaging box rack (4), an input conveyor belt (5), a box sealing mechanism (8), an adjustable conveyor belt (6) and an output conveyor belt (7). A plurality of groups of packaging box racks (4) are distributed in an annular array inside the housing (3). The packaging box racks (4) are driven to rotate by the driving mechanism. The number of the packaging box racks (4) is 2 n where n is a positive integer and n > 1. An input conveyor belt (5) for feeding the packaging box into the packaging box rack (4) is provided at the bottom of the lowermost group of the packaging box racks (4). The uppermost group of the packaging box racks (4) communicates with the feeding mechanism (1) at the top of the housing (3). An adjustable conveyor belt (6) for removing the packaging box from the packaging box rack (4) is provided at the bottom of the outermost group of the packaging box racks (4). One end of the adjustable conveyor belt (6) is provided with an output conveyor belt (7) for removing the packaging box from the housing (3). A box sealing mechanism (8) for sealing the packaging box is provided on the outer wall of the inner wall of the housing (3) near the inner end of the output conveyor belt (7); The packaging box rack (4) includes a counterweight ball (12), a connecting shaft (13), a connecting block (14), an adjustment chamber (15), a first adjustment assembly, a support bar (16), and an opening rod (17). A connecting block (14) is fixed to the top of the adjustment chamber (15). One end of the connecting shaft (13) passes through the connecting plate (11) through a bearing and is fixedly connected to the connecting block (14). The other end of the connecting shaft (13) is fixedly connected to the counterweight ball (12). Support bars (16) are symmetrically arranged on one side of the adjustment chamber (15). A first adjustment assembly for adjusting the distance between the two support bars (16) is arranged inside the adjustment chamber (15). An opening rod (17) for opening the lid of the packaging box is arranged on one group of the support bars (16).

2. The blueberry packaging device according to claim 1, characterized in that: The driving mechanism includes a programmable motor (9), a turntable (10), and a connecting plate (11). One end of the programmable motor (9) is fixedly connected to the inner wall of the housing (3). The output end of the programmable motor (9) is fixed with a turntable (10). Multiple groups of connecting plates (11) are fixed on the outer wall of the turntable (10). The number of the connecting plates (11) is equal to that of the packaging box racks (4) and is rotatably connected to the packaging box racks (4).

3. A blueberry packaging device according to claim 1, characterized in that: The opening rod (17) includes a first electric telescopic rod (18), a fixed block (19), and a flat strip (20). The first electric telescopic rod (18) is fixed to the side wall of the support bar (16) near one end of the adjustment chamber (15) through the fixed block (19). The output end at the top of the first electric telescopic rod (18) is fixed with a flat strip (20). The flat strip (20) is inserted at the connection between the packaging box and the lid of the packaging box.

4. A blueberry packaging device according to claim 1, characterized in that: The adjustable conveyor belt (6) includes a conveyor belt group (21), a hydraulic cylinder (22), a through groove (23), and an installation chamber (24). An installation chamber (24) is fixed to the side wall of the housing (3). Hydraulic cylinders (22) are symmetrically arranged inside the installation chamber (24). A through groove (23) is arranged at the connection between the housing (3) and the installation chamber (24). The output end of the hydraulic cylinder (22) passes through the through groove (23) and is fixedly connected to the side wall of the conveyor belt group (21).

5. The blueberry packaging device according to claim 4, characterized in that: The height of the through groove (23) is greater than the height of the conveyor belt group (21).

6. The blueberry packaging device according to claim 1, characterized in that: The box sealing mechanism (8) includes a box sealing plate (25), a second electric telescopic rod (26), a sealing strip (27), a third electric telescopic rod (28), and a second adjustment assembly. The box sealing plate (25) is located directly above the output conveyor belt (7). Second electric telescopic rods (26) are symmetrically arranged on the top of the box sealing plate (25). The second electric telescopic rods (26) are fixedly connected to the inner wall of the housing (3). A fixed chamber (33) is arranged at the outer end of the box sealing plate (25). Third electric telescopic rods (28) are symmetrically arranged on one side of the fixed chamber (33). A second adjustment assembly for adjusting the distance between the two third electric telescopic rods (28) is arranged inside the fixed chamber (33). The lower end of the third electric telescopic rod (28) is fixed with a sealing strip (27).

7. The blueberry packaging device according to claim 6, characterized in that: The first adjustment component and the second adjustment component have the same structure, and both include a bidirectional screw (29), a driving motor (30), a chute (31) and a connecting sleeve (32). The bidirectional screw (29) is rotatably installed inside the adjustment bin (15), the bidirectional screw (29) is driven by the driving motor (30), the connecting sleeves (32) are symmetrically arranged on the bidirectional screw (29), and one end of the connecting sleeve (32) penetrates through the chute (31).

8. A blueberry packaging device according to any one of claims 1-7, characterized in that: The number of the packaging box racks (4) is 8 groups.

9. A packaging method for the blueberry packaging equipment according to claim 8, characterized in that: Including the following steps; S1. During the first packaging, the empty packaging boxes are sent into the interior of the outer shell (3) through the input conveyor belt (5) and are successively sent onto the packaging box racks (4). At the same time, the flat strip (20) is inserted at the connection between the packaging box and the packaging box cover. After a certain period of time, the packaging box racks (4) are fully loaded. At this time, the input conveyor belt (5) stops working, and the programmable motor (9) drives the turntable (10) to rotate, thereby driving the packaging box racks (4) to rotate by 45°. At this time, the programmable motor (9) stops working and locks itself. At this time, the input conveyor belt (5) continues to work to load another group of packaging box racks (4). After a certain period of time, the input conveyor belt (5) stops working. After repeating the above feeding process three times, the packaging box racks (4) that are fed for the first time move to the topmost position. S2. At this time, by starting the first electric telescopic rod (18) on the topmost packaging box rack (4), the first electric telescopic rod (18) pushes the flat strip (20) upward, thereby completely opening the packaging box cover to facilitate the feeding mechanism (1) to fill the packaging box with blueberries. After the feeding mechanism (1) finishes working, the flat strip (20) is moved downward to reset the packaging box cover. S3. Then, the programmable motor (9) drives the turntable (10) to rotate, thereby realizing the synchronous feeding of the packaging boxes and the filling of blueberries. When the filled packaging box is about to move to the outermost side, at this time, the hydraulic cylinder (22) pushes the adjustable conveyor belt (6) out, thereby realizing the synchronous feeding of the packaging boxes, the filling of blueberries, and the sending out of the filled packaging boxes. When the packaging box is completely sent out, at this time, the hydraulic cylinder (22) pulls the adjustable conveyor belt (6) back to ensure the rotation of the packaging box racks (4). S4. During the output process of the output conveyor belt (7), the packaging box passes through the sealing plate (25). As the packaging box moves, the box cover of the packaging box is gradually pressed by the sealing plate (25). At the same time, the sealing strip (27) also presses the edge of the packaging box, so that the box cover of the packaging box is engaged with the packaging box, and finally it is sent out of the packaging mechanism (2).

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