Box body assembly, vertical box filling machine and fruit and vegetable sorting equipment

By introducing a tension adjustment module into the vertical packing machine, the problem of reduced tension in flexible doors caused by stretching deformation or displacement of connecting parts is solved, realizing dynamic automatic compensation and precise adjustment of flexible doors, and improving the smoothness and reliability of opening and closing.

CN224211344UActive Publication Date: 2026-05-08REEMOON TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
REEMOON TECH CO LTD
Filing Date
2025-05-29
Publication Date
2026-05-08

AI Technical Summary

Technical Problem

During long-term use, the flexible doors of vertical packing machines may experience a decrease in tension due to stretching deformation or displacement of connecting parts, resulting in looseness, poor sealing, and affecting the smoothness and reliability of opening and closing.

Method used

The tension adjustment module, which includes components such as threaded joints, springs, and guide shafts, is used to adjust the tension of the flexible door, thereby achieving dynamic automatic compensation and precise adjustment of the flexible door and ensuring stable tension.

Benefits of technology

It effectively avoids the decrease in tension of flexible doors caused by material deformation or displacement of connecting parts, maintains a good sealing effect, and improves the smoothness of opening and closing and the reliability and service life of the cabinet components.

✦ Generated by Eureka AI based on patent content.

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Abstract

The embodiment of the utility model relates to the technical field of fruit and vegetable sorting, in particular to a box body assembly, a vertical box filling machine and fruit and vegetable sorting equipment. The box body assembly comprises a box structure, a flexible door and a traction mechanism. The traction mechanism comprises a first traction piece and a second traction piece which are connected with the two sides of the flexible door respectively, and a connecting piece located above the second traction piece. A tension adjusting module of the box assembly is connected with the second traction piece and the connecting piece and used for adjusting the distance between the second traction piece and the connecting piece in the height direction, so that the lifting degree of the second traction piece to the flexible door is changed, and then the tension force of the flexible door is adjusted. The driving module synchronously drives the first traction piece to laterally move and the second traction piece to lift, so that the bottom opening of the box structure is opened and closed by the flexible door. Through the design, the tension degree of the flexible door can be conveniently adjusted, looseness, untight sealing or clamping stagnation of the flexible door are effectively avoided, smooth opening and closing are guaranteed, the reliability of the box body assembly is improved, and the service life of the box body assembly is prolonged.
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Description

Technical Field

[0001] This application relates to the field of fruit and vegetable sorting technology, and in particular to a box assembly, a vertical boxing machine, and fruit and vegetable sorting equipment. Background Technology

[0002] In vertical packing machines, some box components use flexible doors to open and close openings, such as for loading and unloading goods. The tension of the flexible door is crucial to the sealing effect and smoothness of opening opening. In these systems, the flexible door is typically opened and closed by a traction mechanism, and its tension depends on the initial installation accuracy of the components of the traction mechanism and the characteristics of the flexible door itself.

[0003] However, during long-term use, flexible doors may undergo some degree of tensile deformation, or the connecting parts of the traction mechanism may experience slight displacement due to vibration, wear, or other reasons. These factors can all lead to a decrease in the tension of the flexible door. Once the tension is insufficient, the flexible door may become loose, fail to seal properly, or even become stuck or unstable during opening and closing, affecting the normal use of the enclosure components. Utility Model Content

[0004] One objective of this application is to provide a box assembly, a vertical boxing machine, and a fruit and vegetable sorting device to solve the technical problem in the related art where the flexible door of the box assembly of the vertical boxing machine becomes loose and poorly sealed due to a decrease in tension after stretching and deformation.

[0005] In a first aspect, embodiments of this application provide a box assembly, including a box structure, a flexible door, and a traction mechanism. The box structure has an opening at its bottom, the flexible door includes a first side and a second side opposite to each other, and the traction mechanism includes:

[0006] The first traction component is connected to the first side;

[0007] The second traction component is connected to the second side;

[0008] The connector is located above the second traction member;

[0009] The tension adjustment module is connected to the second traction member and the connecting member respectively, and is used to adjust the distance between the second traction member and the connecting member in the height direction;

[0010] A drive module is connected to the first traction member and the connecting member respectively. The first traction member is suspended below the opening by the drive module. The second traction member is suspended on the outer periphery of the box structure by the drive module through the tension adjustment module and the connecting member. The flexible door is supported and tensioned by the first traction member, the second traction member and one side edge of the bottom of the box structure. The drive module is used to simultaneously drive the first traction member to move laterally along the opening and drive the second traction member to move up and down, so that the flexible door opens or closes the opening.

[0011] With the above structure, the tension adjustment module can easily adjust the tension of the flexible door, effectively avoiding the problem of reduced tension caused by material stretching deformation or displacement of connecting parts. This ensures that the flexible door can maintain a good sealing effect after long-term use, avoids loosening and jamming, and improves the smoothness of opening and closing and the reliability and service life of the cabinet components.

[0012] Optionally, the tension adjustment module includes:

[0013] The first mating component is connected to the second traction component;

[0014] The second mating component is connected to the connecting component;

[0015] The first connecting rod is respectively connected to the first mating component and the second mating component;

[0016] The first mating component and the second mating component are arranged at intervals along the length of the first connecting rod, and the position of either the first mating component or the second mating component along the length of the first connecting rod is adjustable.

[0017] By adjusting the position of at least one of the first and second mating parts on the first connecting rod through the above structure, the tension can be precisely changed. The operation is relatively simple and intuitive, and the tension force of the flexible door can be effectively controlled and compensated.

[0018] Optionally, both the first mating component and the second mating component are threaded joints, the first connecting rod is a screw, one end of the first connecting rod is threadedly connected to the first mating component, and the other end of the first connecting rod is threadedly connected to the second mating component.

[0019] The aforementioned structure allows for more precise and effortless tension adjustment. The threaded connection is self-locking, ensuring a stable and secure adjustment without loosening, while also providing a wide adjustment range and strong tensile strength.

[0020] Optionally, the connector is provided with a first through hole, and the tension adjustment module includes:

[0021] The third mating component is located below the connecting component and connected to the second traction component. The third mating component is provided with a second through hole, and the first through hole and the second through hole are aligned with each other.

[0022] The second connecting rod is respectively inserted into the first through hole and the second through hole. The second connecting rod includes a first limiting part and a second limiting part. The outer contour dimension of the first limiting part is larger than the first through hole and is located above the first through hole. The outer contour dimension of the second limiting part is larger than the second through hole and is located below the third mating part.

[0023] The first spring is sleeved on the second connecting rod;

[0024] The first spring abuts against the end face of the first limiting part and the first through hole, or the first spring abuts against the end face of the second limiting part and the second through hole.

[0025] The above structure utilizes the elastic properties of springs to achieve dynamic automatic compensation of the tension force of the flexible door, thus enabling the flexible door to self-tension. When the flexible door undergoes minor deformation or the system vibrates, the springs can absorb these changes, maintaining a relatively constant tension force. This reduces the need for frequent manual adjustments, buffers impacts, and improves the adaptability and stability of the system.

[0026] Optionally, at least one of the first limiting part and the second limiting part is a detachable component on the second connecting rod, and its position in the length direction of the second connecting rod is adjustable.

[0027] With the above structure, the initial preload of the tension adjustment module can be set and adjusted as needed. This allows for automatic compensation using springs, while also enabling the convenient preset of a basic tension level based on the specific conditions or usage requirements of the flexible door, enhancing the flexibility and accuracy of the adjustment.

[0028] Optionally, the connector includes a support and a guide shaft, one end of the guide shaft is connected to the support, and the other end of the guide shaft extends upward in the height direction of the box structure. The tension adjustment module further includes:

[0029] The bracket is partially located above the support portion and connected to the second traction member. The bracket is equipped with a guide sleeve, which is connected to the guide shaft. The bracket is movable relative to the connector in the length direction of the guide shaft.

[0030] A second spring is sleeved on the guide shaft, with one end of the second spring abutting against the support portion and the other end of the second spring abutting against the bracket.

[0031] Through the aforementioned structure, the guide shaft and guide sleeve cooperate to ensure the stability and guidance of the bracket and the connected second traction component during the lifting process, preventing deflection or jamming. The second spring also provides elastic tension, which can automatically compensate for changes in the flexible door and maintain its tension.

[0032] Optionally, the housing assembly further includes a blocking structure, which is installed on the housing structure and located above the connector, and is used to block the connector when it rises to a preset height.

[0033] The aforementioned structure effectively limits the upward stroke of the connector, preventing excessive upward movement that could lead to overstretching of the flexible door, overload of the drive module, or damage to other related components. This provides stroke limiting and protection, enhancing the operational safety of the enclosure assembly.

[0034] Optionally, the blocking structure includes a blocking member and a buffer member, the blocking member and the buffer member are respectively installed on the box structure and are both located above the connecting member, the buffer member includes a retractable buffer top rod, the buffer top rod is arranged to extend toward the connecting member;

[0035] Specifically, when the buffer rod is at its minimum buffer stroke, the height of the end of the buffer rod is less than that of the blocking member; when the buffer rod is at its maximum buffer stroke, the height of the end of the buffer rod is greater than that of the blocking member.

[0036] With the above structure, when the connector reaches its upper limit position, it is first buffered by the buffer to absorb some kinetic energy and reduce the impact, and then rigidly limited by the blocking component. This effectively reduces the impact and noise during the limiting process, protects the relevant components, extends the service life, and makes the operation more stable.

[0037] In a second aspect, embodiments of this application provide a vertical packing machine, comprising:

[0038] frame;

[0039] A fruit and vegetable conveyor belt, installed on the frame, is used to transport fruits and vegetables;

[0040] The box assembly as described in any of the above claims is vertically mounted on the frame and located at the output end of the fruit and vegetable conveyor belt, for receiving the fruit and vegetable conveyor belt, closing the opening during loading, and opening the opening during unloading.

[0041] In a third aspect, embodiments of this application provide a fruit and vegetable sorting device, including the vertical packing machine as described above.

[0042] The embodiments of this application can achieve the following technical effects: By setting a tension adjustment module, the tension of the flexible door can be easily adjusted, effectively avoiding the problem of tension reduction caused by material stretching deformation or displacement of connecting parts, ensuring that the flexible door can still maintain a good sealing effect after long-term use, avoiding loosening and jamming, and improving the smoothness of opening and closing and the reliability and service life of the box components. Attached Figure Description

[0043] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings do not constitute a limitation on scale.

[0044] Figure 1 This is a schematic diagram of the structure of a vertical packing machine provided in an embodiment of this application;

[0045] Figure 2 This is a schematic diagram of the structure of a first type of box assembly for a vertical box packer provided in an embodiment of this application;

[0046] Figure 3 for Figure 2 A magnified view of detail A in the middle;

[0047] Figure 4 This is a schematic diagram of the structure of a second type of box assembly for a vertical box packer provided in an embodiment of this application;

[0048] Figure 5 Another structural schematic diagram of the second type of box assembly of the vertical box packer provided in the embodiments of this application;

[0049] Figure 6 A schematic diagram of the tension adjustment module for the second type of housing assembly provided in this application embodiment;

[0050] Figure 7 This is a schematic diagram of the structure of a third type of box assembly for a vertical box packer provided in an embodiment of this application.

[0051] Label Explanation:

[0052] 1000. Vertical packing machine; 100. Box assembly; 10. Box structure; 11. Opening; 20. Flexible door; 21. First side; 22. Second side; 30. Traction mechanism; 31. Drive module; 311. Rocker arm; 312. Drive unit; 313. Linkage unit; 3131. Strap; 32. First traction component; 33. Second traction component; 34. Connector; 341. First crossbeam; 342. Support; 343. Guide shaft; 35. Tension adjustment module; 351. 352. First mating component; 353. Second mating component; 354. First connecting rod; 355. Third mating component; 356. Second connecting rod; 357. First limiting part; 358. Second limiting part; 359. First spring; 350. Bracket; 351. Guide sleeve; 352. Second crossbeam; 353. Side arm; 354. Second spring; 455. Blocking structure; 46. Blocking component; 47. Buffer component; 48. Buffer top rod; 200. Frame; 300. Fruit and vegetable conveyor belt. Detailed Implementation

[0053] To facilitate understanding of this utility model, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is described as "connected" to another element, it can be directly on the other element, or one or more intermediate elements can exist between them. The terms "upper," "lower," "left," "right," "upper end," "lower end," "top," and "bottom," etc., used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0054] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention.

[0055] In related technologies, during long-term use, the flexible door at the bottom of a vertical packing machine may undergo a certain degree of tensile deformation, or the connecting parts of the traction mechanism may experience slight displacement due to vibration, wear, or other reasons. These factors can all lead to a decrease in the tension of the flexible door. Once the tension is insufficient, the flexible door may become loose, fail to seal properly, or even become stuck or unstable during opening and closing, affecting the normal use of the box assembly.

[0056] Please refer to the following: Figure 1 and Figure 2 In order to solve the above-mentioned technical problems, in a first aspect, this application provides a box assembly 100, which is applied to a vertical box packer 1000 and can also be applied to other box hoisting devices or equipment.

[0057] In some embodiments, the housing assembly 100 includes a housing structure 10, a flexible door 20, and a traction mechanism 30. The housing structure 10 has an opening 11 at its bottom. The flexible door 20 includes a first side 21 and a second side 22 facing each other. The traction mechanism 30 includes a first traction member 32 connected to the first side 21. A second traction member 33 is connected to the second side 22. A connecting member 34 is located above the second traction member 33. A tension adjustment module 35 is connected to both the second traction member 33 and the connecting member 34, and is used to adjust the distance between the second traction member 33 and the connecting member 34 in the height direction.

[0058] The drive module 31 is connected to the first traction member 32 and the connecting member 34 respectively. The first traction member 32 is suspended below the opening 11 by the drive module 31. The second traction member 33 is suspended on the outer periphery of the box structure 10 by the drive module 31 through the tension adjustment module 35 and the connecting member 34. The flexible door 20 is supported and tensioned by the first traction member 32, the second traction member 33 and one side edge of the bottom of the box structure 10. The drive module 31 is used to simultaneously drive the first traction member 32 to move laterally along the opening 11 and drive the second traction member 33 to move up and down, so that the flexible door 20 opens or closes the opening 11.

[0059] The structural principle of the box assembly 100 in this embodiment is as follows: the box structure controls the opening and closing of the flexible door 20 on the bottom opening 11 of the box structure 10 through a traction mechanism 30 including a first traction member 32, a second traction member 33, a connecting member 34, a tension adjustment module 35, and a drive module 31. The first side 21 and the second side 22 of the flexible door 20 are connected to the first traction member 32 and the second traction member 33, respectively. The drive module 31 suspends the first traction member 32 below the opening 11 and suspends the second traction member 33 on the outer periphery of the box structure 10 through the connecting member 34 and the tension adjustment module 35. The flexible door 20 is tensioned by the two traction members and one edge of the bottom of the box structure 10. The tension adjustment module 35 is located between the second traction member 33 and the connecting member 34 and can adjust the distance between the two in the height direction, thereby changing the degree of lifting of the flexible door 20 by the second traction member 33. The drive module 31 synchronously drives the first traction member 32 to move laterally and drives the second traction member 33 to move up and down. That is, it synchronously drives the first traction member 32 to open and close the opening 11 laterally and drives the second traction member 33 to cooperate with the opening and closing of the flexible door 20, so as to realize the opening or closing of the opening 11 by the flexible door 20.

[0060] Understandably, by setting the tension adjustment module 35, the tension of the flexible door 20 can be easily adjusted, effectively avoiding the problem of reduced tension caused by material stretching deformation or displacement of connecting parts. This ensures that the flexible door 20 can maintain a good sealing effect after long-term use, avoids loosening and jamming, and improves the smoothness of opening and closing and the reliability and service life of the box assembly 100.

[0061] In some embodiments, the number of tension adjustment modules 35 can be one or at least two. When the number of tension adjustment modules 35 is at least two, they are arranged at intervals in the width direction of the flexible door 20 to uniformly tension the flexible door 20 and ensure the stable operation of the flexible door 20.

[0062] In some embodiments, both the first traction member 32 and the second traction member 33 are traction rollers, and the flexible door 20 can be a belt, textile belt, or chain plate, etc., and is wound around or fixed to the first traction member 32 and the second traction member 33. In other embodiments, the flexible door 20 can be a belt, textile belt, or chain plate, etc., and the flexible door 20 can be fastened to each of the first traction member 32 and the second traction member 33 by bolts and nuts, or by other fastening methods such as riveting.

[0063] Please see Figure 3 In some embodiments, the tension adjustment module 35 includes a first mating member 351, a second mating member 352, and a first connecting rod 353. The first mating member 351 is connected to the second traction member 33. The second mating member 352 is connected to the connecting member 34. The first connecting rod 353 is mated and connected to both the first mating member 351 and the second mating member 352.

[0064] The first mating component 351 and the second mating component 352 are arranged at intervals along the length of the first connecting rod 353, and the position of either the first mating component 351 or the second mating component 352 along the length of the first connecting rod 353 is adjustable.

[0065] Understandably, the tension adjustment module 35 includes a first mating member 351 connected to the second traction member 33, a second mating member 352 connected to the connecting member 34, and a first connecting rod 353 that simultaneously mates with both mating members. The first and second mating members 352 are spaced apart along the length of the first connecting rod 353, and the position of at least one of the mating members on the first connecting rod 353 is adjustable. In this embodiment, by changing the position of at least one of the first mating members 351 and the second mating member 352 on the first connecting rod 353, the distance between the first mating member 351 and the second mating member 352 can be adjusted, thereby changing the height distance between the second traction member 33 and the connecting member 34. More readily understood, this embodiment allows for precise change of tension by adjusting the position of at least one of the first mating members 351 and the second mating member 352 on the first connecting rod 353. The operation is relatively simple and intuitive, achieving effective control and compensation of the tension force of the flexible door 20.

[0066] In some embodiments, the first mating member 351 and the second mating member 352 are both threaded joints, the first connecting rod 353 is a screw, one end of the first connecting rod 353 is threadedly connected to the first mating member 351, and the other end of the first connecting rod 353 is threadedly connected to the second mating member 352.

[0067] Understandably, both ends of the screw are threadedly connected to these two threaded connectors. By rotating the screw or either threaded connector, the two threaded connectors can be moved relative to each other along the screw's axial direction using threaded transmission, thereby changing the distance between them. The embodiment of this application uses a threaded connector and screw structure, making tension adjustment more precise and effortless. The threaded connection has self-locking properties, ensuring a stable and secure state after adjustment, while also providing a large adjustment range and strong tensile strength.

[0068] In other embodiments, the first connecting rod 353 has a plurality of spaced first pin holes along its length. Each of the first mating member 351 and the second mating member 352 has a sleeve hole and is fitted onto the first connecting rod 353. A second pin hole is provided inside the sleeve hole of each of the first mating members 351 and the second mating member 352. The second pin hole of any one of the first mating members 351 and the second mating member 352 can be aligned with one of the first pin holes on the first connecting rod 353, and locked in place by a pin passing through both the second pin hole and the first pin hole, thus achieving a fixed connection with the first connecting rod 353. It can be understood that any one of the first mating members 351 and the second mating member 352 can align its second pin hole with different first pin holes to change the distance between the two mating members.

[0069] In other embodiments, at least one of the first mating member 351 and the second mating member 352 has a plurality of spaced third pin holes in the length direction, and the first connecting rod 353 is laterally provided with a spring pin that engages with the third pin holes. The spring pin on the first connecting rod 353 can engage with the third pin hole of either the first mating member 351 or the second mating member 352 to achieve a fixed connection. It can be understood that the first connecting rod 353 uses the spring pin to align and match different third pin holes on either the first mating member 351 or the second mating member 352 to change the distance between the two mating members 351 and 352.

[0070] Please refer to the following: Figures 4 to 6 In some embodiments, the connector 34 is provided with a first through hole, and the tension adjustment module 35 includes a third mating part 354, a second connecting rod 355 and a first spring 356.

[0071] The third mating component 354 is located below the connecting component 34 and connected to the second traction component 33. The third mating component 354 has a second through hole, and the first through hole and the second through hole are aligned with each other. The second connecting rod 355 passes through the first through hole and the second through hole respectively. The second connecting rod 355 includes a first limiting part 3551 and a second limiting part 3552. The outer contour dimension of the first limiting part 3551 is larger than the first through hole and is located above the first through hole. The outer contour dimension of the second limiting part 3552 is larger than the second through hole and is located below the third mating component 354. The first spring 356 is sleeved on the second connecting rod 355.

[0072] The first spring 356 abuts against the end face of the first limiting part 3551 and the first through hole respectively, or the first spring 356 abuts against the end face of the second limiting part 3552 and the second through hole respectively.

[0073] Understandably, the connector 34 has a first through hole, and the tension adjustment module includes a third mating part 354 located below the connector 34 and connected to the second traction member 33. The third mating part 354 has a second through hole aligned with the first through hole. The second connecting rod 355 passes through these two through holes and has a first limiting part 3551 and a second limiting part 3552 with an outer dimension larger than the through hole. The first limiting part 3551 is located above the first through hole, and the second limiting part 3552 is located below the second through hole. A first spring 356 is sleeved on the second connecting rod 355, with its two ends respectively abutting between the first limiting part 3551 and the end face of the first through hole, or between the second limiting part 3552 and the end face of the second through hole. The spring force acts between the connector 34 and the third mating part 354, and further acts between the connector 34 and the second traction member 33, forming an elastic height gap.

[0074] To be more easily understood, this embodiment utilizes the elastic properties of a spring to achieve dynamic automatic compensation of the tension force of the flexible door 20, that is, to achieve self-tensioning of the flexible door 20. When the flexible door 20 undergoes minor deformation or the system vibrates, the spring can absorb these changes, maintain a relatively constant tension force, reduce the need for frequent manual adjustments, and buffer impacts, thereby improving the adaptability and stability of the system.

[0075] In some embodiments, at least one of the first limiting part 3551 and the second limiting part 3552 is a detachable component on the second connecting rod 355, and its position in the length direction of the second connecting rod 355 is adjustable.

[0076] At least one of the first limiting part 3551 and the second limiting part 3552 on the second connecting rod 355 is a detachable component, such as a nut or a retaining ring, and its position in the length direction of the second connecting rod 355 is adjustable. By adjusting the position of these adjustable limiting parts, the initial compression or tension of the first spring 356 can be changed.

[0077] Understandably, the embodiments of this application allow the initial preload of the tension adjustment module 35 to be set and adjusted as needed. In this way, while utilizing the spring for automatic compensation, a basic tension level can be conveniently preset according to the specific conditions or usage requirements of the flexible door 20, enhancing the flexibility and accuracy of adjustment.

[0078] Please see Figure 7 In some embodiments, another flexible implementation of the tension adjustment module 35 is provided, wherein the connector 34 includes a support 342 and a guide shaft 343, one end of the guide shaft 343 is connected to the support 342, and the other end of the guide shaft 343 extends upward in the height direction of the box structure 10. The tension adjustment module 35 also includes a bracket 357 and a second spring 358.

[0079] The bracket 357 is located above the support portion 342 and connected to the second traction member 33. The bracket 357 is equipped with a guide sleeve 3571, which is connected to the guide shaft 343. The bracket 357 can move relative to the connecting member 34 in the length direction of the guide shaft 343. The second spring 358 is sleeved on the guide shaft 343. One end of the second spring 358 abuts against the support portion 342, and the other end of the second spring 358 abuts against the bracket 357.

[0080] Understandably, the connector 34 includes a support portion 342 and an upwardly extending guide shaft 343. The tension adjustment module 35 also includes a bracket 357 partially located above the support portion 342 and connected to the second traction member 33. A guide sleeve 3571, which slides on the guide shaft 343, is mounted on the bracket 357. A second spring 358 is sleeved on the guide shaft 343, with one end connected to the support portion 342 and the other end abutting against the bracket 357. Under the tension of the second traction member 33 or the spring force, the bracket 357 moves up and down along the guide shaft 343.

[0081] To be more easily understood, this embodiment of the application, through the cooperation of the guide shaft 343 and the guide sleeve 3571, ensures the stability and guidance of the bracket 357 and the second traction member 33 connected thereto during the lifting process, preventing deflection or jamming. The second spring 358 also provides elastic tension, which can automatically compensate for changes in the flexible door 20 and maintain its tensioned state.

[0082] For example, the connector 34 further includes a first crossbeam 341, which connects the support portion 342 and the drive module 31 respectively. The support portion 342 has an L-shaped structure, and the guide shaft 343 is installed in the horizontal part of the L-shaped structure of the support portion 342. The vertical part of the support portion 342 is perpendicularly connected to the first crossbeam 341. The bracket 357 includes a second crossbeam 3572 and a side arm 3573. The second traction member 33 is a traction roller parallel to the second crossbeam 3572 and located below the second crossbeam 3572. One end of the side arm 3573 is connected to the second crossbeam 3572, and the other end of the side arm 3573 is connected to the second traction member 33. Each end of the second crossbeam 3572 is connected to a corresponding side arm 3573. The second crossbeam 3572, the side arm 3573, and the second traction member 33 together form a "U"-shaped structure.

[0083] In some embodiments, the drive module 31 includes a joystick 311, a drive unit 312, and a linkage unit 313. Please refer to... Figure 2 and Figure 4 In one embodiment, the drive unit 312 is connected to the rocker arm 311 to drive the rocker arm 311 to swing, thereby causing the first traction member 32 to move laterally along the opening 11. The linkage unit 313 is connected to the connecting member 34 and the rocker arm 311 respectively to synchronously drive the connecting member 34 to move up and down. The drive unit 312 can be a cylinder, electric push rod, or electric cylinder, etc., and the linkage unit 313 is a connecting rod or similar device. Figure 2 , Figure 4 The pull strap 3131 is shown.

[0084] Please see Figure 7In another embodiment, the drive unit 312 is connected to the connector 34 to drive the connector 34 to move up and down, thereby causing the second traction member 33 to move up and down. The linkage unit 313 includes a drive member and a controller. The drive member of the linkage unit 313 is connected to the rocker arm 311 and can drive the rocker arm 311 to swing, thereby causing the first traction member 32 to move laterally along the opening 11. The controller is connected to the drive member of the linkage unit 313 and the drive unit 312 respectively, so that the drive member of the linkage unit 313 and the drive unit 312 work together, thereby synchronizing the movements of the first traction member 32 and the second traction member 33. The drive member of the drive unit 312 and the linkage unit 313 can be a cylinder, an electric push rod, or an electric cylinder, etc., and the controller can be an existing programmable logic controller or a microcontroller. Alternatively, the linkage unit 313 includes a connecting rod, which is connected to the connector 34 and the rocker arm 311 respectively, so that when the connector 34 moves up and down, it drives the rocker arm 311 to swing, thereby synchronizing the movements of the first traction member 32 and the second traction member 33.

[0085] Please review Figure 7 In some embodiments, the housing assembly 100 further includes a blocking structure 40, which is mounted on the housing structure 10 and located above the connector 34. The blocking structure 40 is used to block the connector 34 when it rises to a preset height.

[0086] Understandably, the blocking structure 40 is installed on the box structure 10 and positioned above the connector 34. When the connector 34 and its driven second traction member 33 rise to a preset height, they will contact the blocking structure 40, thus limiting further upward movement. By setting the blocking structure 40, this embodiment effectively limits the upward stroke of the connector 34, preventing excessive upward movement that could lead to overstretching of the flexible door 20, overload of the drive module 31, or damage to other related components. This provides stroke limiting and protection, improving the operational safety of the box assembly 100.

[0087] In some embodiments, the blocking structure 40 includes a blocking member 41 and a buffer member 42, which are respectively installed on the box structure 10 and are both located above the connector 34. The buffer member 42 includes a telescopic buffer rod 421, which is arranged to extend toward the connector 34.

[0088] Specifically, when the buffer rod 421 is at its minimum buffer stroke, the height of the end of the buffer rod 421 is less than that of the blocking member 41; when the buffer rod 421 is at its maximum buffer stroke, the height of the end of the buffer rod 421 is greater than that of the blocking member 41.

[0089] Understandably, the blocking structure 40 includes a blocking element 41 and a buffer element 42, both mounted on the box structure 10 and located above the connector 34. The buffer element 42 includes a telescopic buffer rod 421 extending toward the connector 34. When the buffer rod 421 is at its minimum buffer stroke (compressed), its end height is lower than the blocking element 41; when it is at its maximum buffer stroke (no force or little force), its end height is higher than the blocking element 41. When the connector 34 rises, it first contacts and compresses the buffer rod 421; only if it continues to rise will it contact the rigid blocking element 41. This arrangement ensures that when the connector 34 reaches its maximum rising position, it is first buffered by the buffer element 42, absorbing some kinetic energy and mitigating the impact, and then rigidly limited by the blocking element 41. This effectively reduces the impact and noise during limiting, protects related components, extends service life, and makes operation smoother.

[0090] Exemplarily, the blocking member 41 includes a fixing block and a screw. The fixing block is mounted on the housing structure, and the screw is mounted on the fixing block and extends partially beyond the outside of the fixing block while facing the connector 34. The length of the structure located outside the fixing block can be adjusted by rotating the screw, thereby adjusting the limiting height of the blocking member 41 on the connector 34. Also exemplaryly, the buffer member 42 in this embodiment is a hydraulic buffer member 42.

[0091] In a second aspect, embodiments of this application provide a vertical boxing machine 1000, including a frame 200, a fruit and vegetable conveyor belt 300, and a box assembly 100 as described in the above embodiments. The fruit and vegetable conveyor belt 300 is mounted on the frame 200 for transporting fruits and vegetables. The box assembly 100 is vertically mounted on the frame 200 and located at the output end of the fruit and vegetable conveyor belt 300, for receiving the fruit and vegetable conveyor belt 300, closing the opening 11 during loading, and opening the opening 11 during unloading.

[0092] The box assembly 100 of the vertical boxing machine 1000 is vertically mounted on the frame 200 and located at the output end of the fruit and vegetable conveyor belt 300. Its working principle is to use the flexible door 20 of the box assembly 100 to control the bottom opening 11. When loading, the opening 11 is closed to receive the fruits and vegetables falling from the conveyor belt, and when unloading, the opening 11 is opened to release the fruits and vegetables.

[0093] Understandably, applying the box assembly 100 with the adjustable tension flexible door 20 to the vertical box packer 1000 makes the opening and closing of the opening 11 more reliable and smooth, and the sealing performance better when the box packer receives and unloads materials such as fruits and vegetables.

[0094] In a third aspect, embodiments of this application provide a fruit and vegetable sorting device, including the vertical packing machine 1000 as described above.

[0095] It is understandable that integrating the vertical boxing machine 1000 with the box assembly 100 of the above embodiments into the fruit and vegetable sorting equipment can improve the boxing efficiency and reliability of the post-sorting stage. Since the flexible door 20 of the box assembly 100 has good tensioning and opening / closing performance, it helps reduce damage to fruits and vegetables during the boxing process and ensures long-term stable operation of the equipment, thereby improving the automation level and operational quality of the entire fruit and vegetable sorting equipment.

[0096] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; under the concept of this utility model, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of this utility model as described above. For the sake of brevity, they are not provided in detail; although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A housing assembly, characterized in that, The system includes a box structure, a flexible door, and a traction mechanism. The box structure has an opening at its bottom. The flexible door includes a first side and a second side facing each other. The traction mechanism includes: The first traction component is connected to the first side; The second traction component is connected to the second side; The connector is located above the second traction member; The tension adjustment module is connected to the second traction member and the connecting member respectively, and is used to adjust the distance between the second traction member and the connecting member in the height direction; A drive module is connected to the first traction member and the connecting member respectively. The first traction member is suspended below the opening by the drive module. The second traction member is suspended on the outer periphery of the box structure by the drive module through the tension adjustment module and the connecting member. The flexible door is supported and tensioned by the first traction member, the second traction member and one side edge of the bottom of the box structure. The drive module is used to simultaneously drive the first traction member to move laterally along the opening and drive the second traction member to move up and down, so that the flexible door opens or closes the opening.

2. The housing assembly according to claim 1, characterized in that, The tension adjustment module includes: The first mating component is connected to the second traction component; The second mating component is connected to the connecting component; The first connecting rod is respectively connected to the first mating component and the second mating component; The first mating component and the second mating component are arranged at intervals along the length of the first connecting rod, and the position of either the first mating component or the second mating component along the length of the first connecting rod is adjustable.

3. The housing assembly according to claim 2, characterized in that, Both the first mating component and the second mating component are threaded joints. The first connecting rod is a screw rod. One end of the first connecting rod is threadedly connected to the first mating component, and the other end of the first connecting rod is threadedly connected to the second mating component.

4. The housing assembly according to claim 1, characterized in that, The connector is provided with a first through hole, and the tension adjustment module includes: The third mating component is located below the connecting component and connected to the second traction component. The third mating component is provided with a second through hole, and the first through hole and the second through hole are aligned with each other. The second connecting rod is respectively inserted into the first through hole and the second through hole. The second connecting rod includes a first limiting part and a second limiting part. The outer contour dimension of the first limiting part is larger than the first through hole and is located above the first through hole. The outer contour dimension of the second limiting part is larger than the second through hole and is located below the third mating part. The first spring is sleeved on the second connecting rod; The first spring abuts against the end face of the first limiting part and the first through hole, or the first spring abuts against the end face of the second limiting part and the second through hole.

5. The housing assembly according to claim 4, characterized in that, At least one of the first limiting part and the second limiting part is a detachable component on the second connecting rod, and its position in the length direction of the second connecting rod is adjustable.

6. The housing assembly according to claim 1, characterized in that, The connector includes a support portion and a guide shaft, one end of the guide shaft is connected to the support portion, and the other end of the guide shaft extends upward in the height direction of the box structure. The tension adjustment module further includes: The bracket is partially located above the support portion and connected to the second traction member. The bracket is equipped with a guide sleeve, which is connected to the guide shaft. The bracket is movable relative to the connector in the length direction of the guide shaft. A second spring is sleeved on the guide shaft, with one end of the second spring abutting against the support portion and the other end of the second spring abutting against the bracket.

7. The housing assembly according to claim 1, characterized in that, It also includes a blocking structure, which is installed on the box structure and located above the connector, and is used to block the connector when it rises to a preset height.

8. The housing assembly according to claim 7, characterized in that, The blocking structure includes a blocking member and a buffer member. The blocking member and the buffer member are respectively installed on the box structure and are both located above the connecting member. The buffer member includes a retractable buffer rod that extends toward the connecting member. Specifically, when the buffer rod is at its minimum buffer stroke, the height of the end of the buffer rod is less than that of the blocking member; when the buffer rod is at its maximum buffer stroke, the height of the end of the buffer rod is greater than that of the blocking member.

9. A vertical packing machine, characterized in that, include: frame; A fruit and vegetable conveyor belt, installed on the frame, is used to transport fruits and vegetables; The box assembly as described in any one of claims 1-8 is vertically mounted on the frame and located at the output end of the fruit and vegetable conveyor belt, for receiving the fruit and vegetable conveyor belt, closing the opening during loading, and opening the opening during unloading.

10. A fruit and vegetable sorting device, characterized in that, Including the vertical packing machine as described in claim 9.