Blueberry packaging equipment and method thereof

Abstract

The invention provides blueberry packaging equipment and a method thereof, and relates to the field of blueberry packaging. The blueberry packaging equipment comprises a feeding mechanism for weighing and distributing blueberry fruits and a packaging mechanism for boxing the blueberry fruits; the packaging mechanism comprises a shell, a driving mechanism, packaging box frames, an input conveying belt, a box sealing mechanism, an adjustable conveying belt and an output conveying belt, the multiple packaging box frames are distributed in the shell in an annular array mode, and the packaging box frames are driven by the driving mechanism to rotate; according to the blueberry filling device, the multiple sets of rotating packaging box frames are arranged, packaging boxes are limited and supported through the packaging box frames, blueberry filling is sequentially conducted on the packaging boxes in a rotating mode, meanwhile, the interval time of blueberry filling is shortened, and the blueberry filling efficiency is improved. And meanwhile, input of the packaging boxes, filling of the blueberries and output of the packaging boxes of the device are carried out at the same time, the time of the whole process is greatly shortened through the mode, and the packaging speed of the device is further increased.

Description

Technical Field

[0001] The present invention relates to the technical field of blueberry packaging, and in particular to a blueberry packaging device and a 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 human body's immunity, and have high nutritional value; among them, because blueberries are rich in anthocyanins and have the effect of activating the retina, they can strengthen eyesight and prevent eye fatigue, thus attracting much attention; With the improvement of the degree of automation, more and more blueberry automatic packaging devices have come into the sight of blueberry manufacturers. The principle of these packaging devices is that the conveyor belt drives the packaging box to move under the blueberry sorting and weighing structure, and then the blueberries are packed into the box and then transported to the labeling place for labeling. As the number of packages per box increases, the interval time for re-packaging will increase. Therefore, the present invention proposes a blueberry packaging device and a method thereof to further increase the packaging speed of blueberries. Summary of the Invention

[0003] In view of the above problems, the present invention proposes a blueberry packaging device and a method thereof. The blueberry packaging device and the method thereof limit and support the packaging box by setting multiple groups of rotating packaging box frames, and successively fill the blueberries into the packaging boxes in a rotating manner, while reducing the interval time of blueberry filling. At the same time, the input of the packaging box, the filling of the blueberries, and the output of the packaging box of the device are all carried out at the same time. This method greatly reduces the time of the entire process and further increases the packaging rate of the device.

[0004] 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 distributing blueberry fruits and a packaging mechanism for packing blueberry fruits. 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 n where n is a positive integer and n>1. The bottom of the lowest group of the packaging box frames is provided with an input conveyor belt for feeding the packaging box into the packaging box frame. The uppermost group of the packaging box frames is communicated with the feeding mechanism at the top of the housing. The bottom of the outermost group of the packaging box frames is provided with an adjustable conveyor belt for removing the packaging box from the packaging box frame. One end of the adjustable conveyor belt is provided with an output conveyor belt for removing the packaging box from the housing. A box sealing mechanism for sealing the packaging box is provided on the outer wall of the inner wall of the housing near the inner end of the output conveyor belt.

[0005] 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 housing. A turntable is fixed to the output end of the programmable motor. 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 frames and they are rotatably connected to the packaging box frames.

[0006] A further improvement lies in that: the packaging box frame includes a counterweight ball, a connecting shaft, a connecting block, an adjustment chamber, a first adjustment component, a support bar and an opening rod. A connecting block is fixed to the top of the adjustment chamber. 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. Support bars are symmetrically arranged on one side of the adjustment chamber. A first adjustment component for adjusting the distance between the two support bars is arranged inside the adjustment chamber. An opening rod for opening the lid of the packaging box is arranged on one group of the support bars.

[0007] 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 to the side wall of the support bar close to 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 part between the packaging box and the lid of the packaging box.

[0008] 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. An installation chamber is fixed to the side wall of the housing. Hydraulic cylinders are symmetrically arranged inside the installation chamber. A through groove is arranged at the connection part between the housing 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.

[0009] A further improvement lies in that: the height of the through groove is greater than the height of the conveyor belt group.

[0010] 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 component. The box sealing plate is located directly above the output conveyor belt. Second electric telescopic rods are symmetrically arranged on the top of the box sealing plate. The second electric telescopic rods are fixedly connected to the inner wall of the housing. A fixed chamber is arranged at the outer end of the box sealing plate. Third electric telescopic rods are symmetrically arranged on one side of the fixed chamber. A second adjustment component for adjusting the distance between the two third electric telescopic rods is arranged inside the fixed chamber. The lower end of the third electric telescopic rod is fixed with a sealing strip.

[0011] A further improvement lies in that: the first adjustment component and the second adjustment component 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 chamber. The bidirectional screw rod is driven by the driving motor. Connecting sleeves are symmetrically arranged on the bidirectional screw rod. One end of the connecting sleeve passes through the sliding groove.

[0012] A further improvement lies in that the number of the packaging box racks is 8 groups.

[0013] Using the above blueberry packaging equipment, the packaging method includes the following steps; S1. During the first packaging, the empty packaging boxes are sent into the interior of 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 boxes and the box lids. 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, and then the above-mentioned repeated loading is carried out three more times. At this time, the packaging box racks that are loaded for the first time move to the uppermost position. S2. At this time, by starting the first electric telescopic rod on the uppermost packaging box rack, the first electric telescopic rod pushes the flat strip upward, thereby completely opening the packaging box lid, facilitating the feeding mechanism to fill the blueberries into the packaging box. After the feeding mechanism finishes working, the flat strip is moved downward to reset the packaging box lid. S3. Then, the programmable motor drives the turntable to rotate, thereby realizing the simultaneous feeding of the packaging boxes and the filling of the blueberries. When the filled packaging box is about to move to the outermost side, at this time, the hydraulic cylinder pushes the adjustable conveyor belt out, thereby realizing the simultaneous feeding of the packaging boxes, the filling of the blueberries, and the sending out of the packaging boxes after canning. When the packaging box is completely sent out, at this time, the hydraulic cylinder pulls the adjustable conveyor belt back to ensure the rotation of the packaging box racks. S4. During the output process of the output conveyor belt, when the packaging box passes through the sealing plate, as the packaging box moves, the box lid of the packaging box is gradually pressed by the sealing plate. At the same time, the sealing strip also presses the edge of the packaging box, making the box lid of the packaging box engage with the packaging box, and finally it is sent out of the packaging mechanism.

[0014] The beneficial effects of the present invention are as follows: By setting multiple sets of rotating packaging box racks, the packaging boxes are limited and supported by the packaging box racks. The blueberries are filled into the packaging boxes in turn by the rotating method, and the interval time of blueberry filling is reduced at the same time. 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 all carried out at the same time. This method greatly reduces the time of the entire process, further increases the packaging rate of this device, and the packaging box rack of this device adopts 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 increasing the use effect of this device. At the same time, a first adjustment component is provided on the packaging box rack of this device. Through the adjustment of the first adjustment component, the packaging box rack can support packaging boxes of different widths. Cooperating with the second adjustment component and the edge sealing strip on the encapsulation board, the edge sealing of packaging boxes of different widths can be carried out, further increasing the applicable range of this device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is the structural schematic diagram of the present invention; Figure 2 is the structural schematic diagram of the guarantee mechanism of the present invention; Figure 3 is the structural schematic diagram of the driving mechanism of the present invention; Figure 4 is the structural schematic diagram of the packaging box rack of the present invention; Figure 5 is the structural schematic diagram of the opening rod of the present invention; Figure 6 is the position schematic diagram of the input conveyor belt, adjustable conveyor belt and output conveyor belt of the present invention; Figure 7 is the structural schematic diagram of the box sealing mechanism of the present invention; Figure 8 is the cross-sectional view of the first adjustment and second adjustment components of the present invention;

[0016] Wherein: 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. Adjustment 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. Edge sealing strip; 28. Third electric telescopic rod; 29. Bidirectional screw; 30. Driving motor; 31. Slide groove; 32. Connecting sleeve; 33. Fixed bin. DETAILED DESCRIPTION OF THE INVENTION

[0017] To deepen the understanding of the present invention, the present invention will be further described in detail below in conjunction 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.

[0018] According to Figures 1-8 As shown, this embodiment provides a blueberry packaging device, including a feeding mechanism 1 for weighing and distributing blueberry fruits and a packaging mechanism 2 for boxing blueberry fruits. 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 a circular array inside the housing 3. The packaging box rack 4 is driven to rotate by a driving mechanism. The number of the packaging box racks 4 is 2 n Where n is a positive integer and n>1. At the bottom of the lowermost group of the packaging box racks 4, there is an input conveyor belt 5 for feeding the packaging box into the packaging box rack 4. The uppermost group of the packaging box racks 4 is communicated with the feeding mechanism 1 at the top of the housing 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 housing 3. On the outer wall of the inner wall of the housing 3 near the inner end of the output conveyor belt 7, there is a box sealing mechanism 8 for sealing the packaging box; The packaging box proposed in this device is a rectangular packaging box made of plastic material. One end between the packaging box and the box cover is a connecting 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 housing 3 wraps and protects the entire structure. A plurality of groups of packaging box racks 4 arranged in a circular array are used to support the packaging box, and the driving mechanism is used to rotate the plurality of groups of packaging box racks 4, so as to achieve the purpose of rotating a plurality of different packaging box racks 4. Since the packaging boxes on the packaging box rack 4 are pre-stacked, the interval time between two 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 rack 4 in this device, the number of the packaging box racks 4 should be set to 2 n Where n is a positive integer and n>1. It is preferably set to eight groups. When the eight groups of packaging box racks 4 rotate, the driving mechanism only needs to drive the packaging box rack 4 to rotate 45° to complete one operation. When the lowermost packaging box rack 4 is feeding the packaging box, the uppermost packaging box is filled with blueberries, and the packaging box on the leftmost or rightmost side is sent out by the cooperation of the adjustable conveyor belt 6 and the output conveyor belt 7, and passes through the box sealing mechanism 8 during the output process, and the box sealing mechanism 8 fixes the clamping between the packaging box and the box cover.

[0019] 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 they are rotatably connected to the packaging box racks 4.

[0020] In this device, the driving mechanism 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 rack 4 can rotate stably. The programmable motor 9 drives the turntable 10 to rotate, and the turntable 10 drives the packaging box rack 4 to rotate through the connecting plate 11, so as to achieve the purpose of rotation.

[0021] 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 component, 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 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 lid of the packaging box is arranged on one group of the support bars 16.

[0022] To further ensure the stability of the packaging box during rotation, in this device, the connecting shaft 13 is rotatably connected to the connecting plate 11, and 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 upwards, avoiding the packaging box from tilting. At the same time, an adjustment chamber 15, support bars 16 and an opening rod 17 are also arranged on the packaging box rack 4. The adjustment chamber 15 can cooperate with the first adjustment component to adjust the distance between the two 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 lid of the packaging box, so that the lid of the packaging box will not affect the filling when blueberries are filled.

[0023] 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.

[0024] The opening rod 17 pushes the flat strip 20 to move upwards through the first electric telescopic rod 18, thereby driving the lid of the packaging box to open, and further ensuring that blueberries can be poured into the packaging box.

[0025] The adjustable conveyor belt 6 includes a conveyor belt group 21, a hydraulic cylinder 22, a through groove 23, and an installation bin 24. An installation bin 24 is fixed on the side wall of the housing 3. 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 fixedly connected to the side wall of the conveyor belt group 21.

[0026] 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.

[0027] The height of the through groove 23 is greater than the height of the conveyor belt group 21.

[0028] 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. Second electric telescopic rods 26 are symmetrically arranged at 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 bin 33 is provided at the outer end of the box sealing plate 25. Third electric telescopic rods 28 are symmetrically arranged on one side of the fixed bin 33. A second adjustment component for adjusting the distance between the two third electric telescopic rods 28 is provided in the fixed bin 33. The lower end of the third electric telescopic rod 28 is fixedly connected with a sealing strip 27.

[0029] The box sealing mechanism 8 presses the lid of the packaging box firmly through the box sealing plate 25, and makes the lid engage with the edge of the packaging box by extrusion, so as to fix the 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 the edges of packaging boxes with different widths, further increasing the applicable range of the device.

[0030] 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. Connecting sleeves 32 are symmetrically arranged on the bidirectional screw 29. One end of the connecting sleeve 32 penetrates through the sliding groove 31.

[0031] 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.

[0032] Using the above blueberry packaging equipment, the packaging method includes 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 placed on the packaging box rack 4. At the same time, the flat strip 20 is inserted at the connection between the packaging box and the box cover. After a certain period of time, when the packaging box rack 4 is fully loaded, the input conveyor belt 5 stops working. The programmable motor 9 drives the turntable 10 to rotate, thereby driving the packaging box rack 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. Then the above feeding process is repeated three times. At this time, the packaging box rack 4 that was fed first moves to the uppermost position; S2. At this time, by starting the first electric telescopic rod 18 on the uppermost 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 blueberries into the packaging box. 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 simultaneous 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 simultaneous feeding of the packaging boxes, the filling of blueberries, and the sending out of the packaging boxes after filling. When the packaging box is completely sent out, the hydraulic cylinder 22 then pulls back the adjustable conveyor belt 6 to ensure the rotation of the packaging box rack 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.

[0033] 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. What is described in the above embodiments and the specification only illustrates 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 dividing blueberry fruits and a packaging mechanism (2) for packing blueberry fruits, characterized in that: The packaging mechanism (2) comprises 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 packaging box racks (4) are distributed in a circular 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), the bottom of the group of packaging box racks (4) located at the bottom is provided with an input conveyor belt (5) for feeding packaging boxes into the packaging box racks (4), the group of packaging box racks (4) located at the top is connected to the feeding mechanism (1) located at the top of the shell (3), the bottom of the group of packaging box racks (4) located at the outermost is provided with an adjustable conveyor belt (6) for moving packaging boxes out of the packaging box racks (4), one end of the adjustable conveyor belt (6) is provided with an output conveyor belt (7) for moving packaging boxes out of the shell (3), and a sealing mechanism (8) for sealing the packaging boxes is provided on the outer wall of the inner wall of the shell (3) near the inner end of the output conveyor belt (7).

2. A blueberry packaging device according to claim 1, characterized in that: The driving mechanism comprises 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 turntable (10) is fixed to the output end of the programmable motor (9); a plurality of groups of connecting plates (11) are fixed to the outer wall of the turntable (10); the number of the connecting plates (11) is equal to that of the packaging box rack (4) and the connecting plates are rotatably connected to the packaging box rack (4).

3. A blueberry packaging device according to claim 1, characterized in that: The packaging box frame (4) comprises a counterweight ball (12), a connecting shaft (13), a connecting block (14), an adjusting chamber (15), a first adjusting component, a supporting bar (16) and an opening rod (17); a connecting block (14) is fixed to the top of the adjusting chamber (15); one end of the connecting shaft (13) passes through a connecting plate (11) via 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); one side of the adjusting chamber (15) is symmetrically provided with supporting bars (16); a first adjusting component for adjusting the spacing between two groups of supporting bars (16) is provided inside the adjusting chamber (15); and an opening rod (17) for opening a cover of the packaging box is provided on one group of the supporting bars (16).

4. A blueberry packaging device according to claim 3, characterized in that: The opening rod (17) comprises a first electric telescopic rod (18), a fixing block (19) and a flat bar (20); the first electric telescopic rod (18) is fixed to a side wall of the support bar (16) close to one end of the adjustment chamber (15) via the fixing block (19); the output end at the top of the first electric telescopic rod (18) is fixed with a flat bar (20); the flat bar (20) is inserted into the connection between the packaging box and the packaging box cover.

5. The blueberry packaging equipment according to claim 1, characterized in that: The adjustable conveyor belt (6) comprises a conveyor belt group (21), a hydraulic cylinder (22), a through slot (23) and a mounting bin (24); the mounting bin (24) is fixed on the side wall of the housing (3); the hydraulic cylinder (22) is symmetrically arranged in the mounting bin (24); a through slot (23) is provided at the connection between the housing (3) and the mounting bin (24); the output end of the hydraulic cylinder (22) passes through the through slot (23) and is fixedly connected to the side wall of the conveyor belt group (21).

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

7. The blueberry packaging equipment according to claim 3, characterized in that: The box sealing mechanism (8) comprises a box sealing plate (25), a second electric telescopic rod (26), an edge banding 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). The second electric telescopic rod (26) is symmetrically arranged on the top of the box sealing plate (25). The second electric telescopic rod (26) is fixedly connected to the inner wall of the housing (3). A fixed bin (33) is arranged at an outer end of the box sealing plate (25). A third electric telescopic rod (28) is symmetrically arranged on one side of the fixed bin (33). A second adjustment component for adjusting the distance between two groups of third electric telescopic rods (28) is arranged in the fixed bin (33). The lower end of the third electric telescopic rod (28) is fixed with an edge banding strip (27).

8. The blueberry packaging equipment according to claim 7, characterized in that: The first adjustment assembly and the second adjustment assembly have the same structure, both comprising a bidirectional screw (29), a drive motor (30), a slide groove (31) and a connecting sleeve (32); a bidirectional screw (29) is rotatably mounted inside the adjustment chamber (15); the bidirectional screw (29) is driven by the drive motor (30); a connecting sleeve (32) is symmetrically arranged on the bidirectional screw (29); one end of the connecting sleeve (32) passes through the slide groove (31).

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

10. A packaging method for blueberries according to claim 9, characterized in that: The steps include: S1. During the first packaging, the empty packaging boxes are fed into the housing (3) through the input conveyor belt (5), and then fed into the packaging box rack (4) in sequence. At the same time, the flat strip (20) is inserted into the connection between the packaging box and the box cover. After a certain period of time, the packaging box rack (4) is 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 rack (4) to rotate 45 degrees. At this time, the programmable motor (9) stops working and self-locks. At this time, the input conveyor belt (5) continues to work and loads another group of packaging box racks (4). After a certain period of time, the input conveyor belt (5) stops working, and then the above loading is repeated three times. At this time, the packaging box rack (4) loaded for the first time moves to the top; S2, at this time, by starting the first electric telescopic rod (18) located on the uppermost packaging box rack (4), the first electric telescopic rod (18) pushes the flat bar (20) upward, thereby completely opening the packaging box cover, making it easier for the feeding mechanism (1) to fill the blueberries into the packaging box. After the feeding mechanism (1) has finished working, the flat bar (20) is moved downward to reset the packaging box cover; S3, the programmable motor (9) then drives the turntable (10) to rotate, thereby realizing synchronous loading of the packaging boxes and filling of the blueberries. When the filled packaging boxes are about to move to the outermost side, the hydraulic cylinder (22) pushes the adjustable conveyor belt (6) to move out, thereby realizing synchronous loading of the packaging boxes, filling of the blueberries and delivery of the packaging boxes after canning. When the packaging boxes are completely delivered, the hydraulic cylinder (22) pulls back the adjustable conveyor belt (6) to ensure the rotation of the packaging box rack (4); S4. During the process of outputting the packaging box by 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 pressed little by little by the sealing plate (25). At the same time, the edge sealing strip (27) also presses the edge of the packaging box so that the lid of the packaging box is engaged with the packaging box, and finally the packaging box is sent out of the packaging mechanism (2).

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