A carton erecting mechanism for a cartoning machine

Abstract

The application relates to the field of article packaging, in particular to a case supporting mechanism of a case packing machine, which comprises a lifting mechanism, a translation mechanism and a case supporting mechanism, the lifting mechanism is used for lifting or lowering the translation mechanism, the case supporting mechanism comprises two swing arm assemblies and four case supporting fingers, the translation mechanism is used for driving the two swing arm assemblies to translate towards each other or in the opposite direction, each swing arm assembly is detachably provided with two case supporting fingers, and the case supporting fingers are driven to swing, the case supporting fingers correspond to the top corners of a case one by one, and each case supporting finger abuts against the inner walls of two adjacent surfaces of the corresponding top corner of the case. The case supporting mechanism has the advantages of simple structure, reduced maintenance cost, improved universality of the case supporting mechanism, flexible adaptation to the production requirements of cases with different sizes, avoidance of the problem that a case supporting frame structure needs to be specially customized due to different case sizes, and improved overall production efficiency.

Description

Technical Field

[0001] This application relates to the field of product packaging, and in particular to a box-supporting mechanism for a box packing machine. Background Technology

[0002] In the product packaging industry, boxing is a crucial step. With the rapid development of the manufacturing industry and the continuous expansion of production scale, enterprises have reached new heights in their pursuit of production efficiency, cost control, and product quality. As a key step in product packaging, boxing's efficiency and quality directly impact the entire production process. An efficient and stable box-opening mechanism ensures that products are smoothly loaded into the box, avoiding problems such as product damage and boxing failure caused by boxes not being properly opened. This is of paramount importance for improving overall production efficiency, reducing production costs, and ensuring product quality.

[0003] To address the issue of opening boxes before product packaging, the industry standard for box-opening mechanisms typically uses a connecting frame as the basic structure. A conveyor roller conveyor is installed inside the connecting frame, its main function being to transport the boxes smoothly to the opening position. A box-opening frame is fixedly connected to the outside of the connecting frame, providing support for the subsequent opening action. Two positioning components are installed at the top of the connecting frame to ensure the box is in the correct position for opening. Two support bases are fixedly connected to the top of the box-opening frame, with lifting cylinders mounted on the outside of the support bases. The output shaft of the lifting cylinder is connected to a rectangular box-opening frame that matches the shape of the box. Driving the lifting cylinder simultaneously raises or lowers the box-opening frame. Box-opening cylinders are fixedly connected to the bottom of each of the four sides of the box-opening frame. The output shaft of the box-opening cylinder is connected to a box-opening plate. When the box-opening cylinder is activated, the box-opening plate moves accordingly, thus opening the box.

[0004] However, existing automatic box-supporting mechanisms have significant drawbacks. Due to their complex structure, multiple parameters need to be adjusted in practical applications to ensure that multiple box-supporting plates work synchronously. This not only increases the manufacturing difficulty and cost of the equipment but also raises maintenance costs. Furthermore, the box-supporting frame structure needs to be customized according to the size of the box to achieve proper alignment with the conveyed box, resulting in low versatility and an inability to flexibly adjust to boxes of different sizes, making it difficult to meet diverse production needs. Utility Model Content

[0005] In order to simplify the structure of the box-supporting mechanism, reduce the operation and maintenance costs of the box-supporting mechanism, and improve the versatility of the box-supporting mechanism so that it can be flexibly adapted to boxes of different sizes, this application provides a box-supporting mechanism for a box packing machine.

[0006] A box-supporting mechanism for a box-packing machine includes a lifting mechanism, a translation mechanism, and a box-supporting mechanism. The lifting mechanism is used to raise or lower the translation mechanism. The box-supporting mechanism includes two swing arm assemblies and four box-supporting fingers. The translation mechanism drives the two swing arm assemblies to translate towards or away from each other. Each swing arm assembly is detachably equipped with two box-supporting fingers, and drives the box-supporting fingers to swing. Each box-supporting finger corresponds to a top corner of a box, and each box-supporting finger abuts against the inner walls of two adjacent surfaces of the corresponding top corner of the box. By adopting the above technical solution, the lifting mechanism can raise or lower the translation mechanism, so that the box-supporting mechanism can be positioned at a suitable height for supporting boxes placed at different heights. The translation mechanism can drive the two swing arm assemblies to translate towards or away from each other to support boxes of different lengths. The translation mechanism drives the box-supporting fingers detachably mounted on the swing arm assemblies to move synchronously, allowing the box-supporting fingers to approach or move away from the boxes. When the supporting fingers reach the corresponding position at the top corner of the box, a swing arm assembly drives two supporting fingers to swing synchronously, so that each supporting finger abuts against the inner wall of two adjacent surfaces at the top corner of the box. When each supporting finger swings, it applies a pushing force to the corresponding two adjacent surfaces, thus effectively opening the two adjacent surfaces. The opening principle of the other surfaces is the same. This structural design reduces the need for complex parameter adjustments and multiple synchronous drive coordination in traditional box-supporting mechanisms, lowers the manufacturing difficulty and cost of the equipment, and further improves the box-supporting effect. At the same time, since the supporting fingers and the swing arm assembly are detachably connected, the installation position of the supporting fingers can be changed according to boxes of different widths, improving the versatility of the box-supporting mechanism and flexibly adapting to diverse production needs. It avoids the problem of needing to customize the box-supporting frame structure due to different box sizes, reduces maintenance costs, and improves overall production efficiency. Preferably, each swing arm assembly includes: a rotating shaft and a swinging component. The rotating shaft is spaced apart by two supporting fingers, and the swinging component is slidably disposed on the translation mechanism, and the swinging component drives the rotating shaft. By adopting the above technical solution, the swing arm assembly is equipped with a rotating shaft and a swinging component. Two support fingers are spaced apart on the rotating shaft. When the swinging component slides on the translation mechanism and drives the rotating shaft, the rotating shaft causes the two support fingers to swing. Since each support finger corresponds to a apex corner of the box and abuts against the inner wall of two adjacent surfaces of the corresponding apex corner, the rotation of the rotating shaft allows the support fingers to accurately act on the apex corner of the box, achieving the opening action. This structural design makes the box-opening action more precise. Compared to traditional box-opening mechanisms that require multiple parameters to be adjusted to achieve synchronous operation of multiple drives, this swing arm assembly, through the cooperation of the rotating shaft and the swinging component, reduces the complexity and adjustment difficulty of the equipment, and lowers manufacturing and maintenance costs.Preferably, the swinging component includes a pivot seat and a swing rod. The pivot seat is slidably disposed on the translation mechanism. The rotating shaft passes through the pivot seat and is connected to the swing rod. The rotating shaft is rotatably connected to the pivot seat and rotates synchronously with the swing rod. By adopting the above technical solution, the pivot seat is slidably disposed on the translation mechanism, which allows the swinging component to move flexibly on the translation mechanism, thereby driving the rotating shaft to adjust its position in the translation direction. The rotating shaft passes through the pivot seat and is connected to the swing rod. The rotating shaft is rotatably connected to the pivot seat and rotates synchronously with the swing rod. When the swing rod swings, it will drive the rotating shaft to rotate synchronously. Since two box-supporting fingers are spaced apart on the rotating shaft, the rotation of the rotating shaft will drive the box-supporting fingers to swing synchronously. This structure allows the box-supporting fingers to swing as needed. When the box-supporting mechanism approaches the box, the box-supporting fingers can more accurately abut against the inner walls of the two adjacent surfaces of the top corner of the box through swinging, thereby effectively opening the box. Preferably, the box-supporting fingers include a first finger portion and a second finger portion. The first finger portion is detachably connected to the rotating shaft and located below the rotating shaft. The second finger portion extends from the first finger portion toward the adjacent surface of the corresponding top corner of the box, and the first finger portion and the second finger portion form an obtuse angle. By adopting the above technical solution, the box-supporting fingers include a first finger portion and a second finger portion. The first finger portion is detachably connected to the rotating shaft, allowing the box-supporting fingers to be replaced according to different sizes of boxes, improving the versatility of the mechanism. The obtuse angle between the first finger portion and the second finger portion allows the box-supporting fingers to better fit against the inner walls of the two adjacent surfaces of the top corner of the box when swinging to open the box, increasing the contact area with the inner wall of the box, thereby opening the box more stably, ensuring smooth packing, and improving packing efficiency and quality. Preferably, the bottom of the second finger portion is inclined upward toward the adjacent surface of the corresponding top corner of the box. By adopting the above technical solution, the bottom of the second finger is tilted upwards towards the adjacent surface of the corresponding top corner of the box. During the descent of the supporting finger into the box, this upward tilt allows the second finger to fit more closely to the inner wall of the box during its swinging motion, avoiding potential jamming or jamming during vertical descent. This reduces collisions between the supporting finger and the inner wall of the box, allowing the supporting finger to open the box more smoothly. Simultaneously, this tilting design also reduces friction with the inner wall of the box when the supporting finger rises out of the box, allowing it to quickly and easily detach from the box. This further improves the working efficiency of the supporting mechanism, reduces wear on the supporting finger and the box, extends the service life of the supporting finger, and ensures the integrity of the box during the opening process. Preferably, the edges of both the first and second fingers are rounded curves.By adopting the above technical solution, the edges of the first and second fingers are set to a smooth curve shape. During the process of the supporting fingers contacting and opening the box by the inner walls of the two adjacent surfaces at the top corners of the box, the smooth curve shape of the edges avoids sharp contact or friction with the inner wall of the box. This not only effectively prevents scratches and damage to the inner wall of the box, ensuring the integrity and appearance quality of the box, but also reduces the friction between the supporting fingers and the inner wall of the box, making the box-opening action smoother, reducing resistance during the box-opening process, improving box-opening efficiency, and also reducing wear on the supporting fingers, extending their service life. Preferably, the lifting mechanism includes: a support frame, a lifting screw, a guide shaft, and a lifting plate. The lifting screw and the guide shaft are parallel and vertically arranged on the support frame. The lifting plate is sleeved on the lifting screw and the guide shaft. The lifting screw drives the lifting plate to rise or fall along the guide shaft. By adopting the above technical solution, the lifting screw and guide shaft are parallel and vertically arranged on the support frame, and the lifting plate is sleeved on the lifting screw and guide shaft. When the lifting screw is driven, due to the guiding effect of the guide shaft, the lifting plate can make a stable linear movement along the guide shaft, realizing precise lifting or lowering actions. This allows the translation mechanism and box-supporting mechanism connected to the lifting plate to accurately reach the appropriate height position, thereby ensuring that the box-supporting mechanism can perform box-supporting operations at different height positions, improving the applicability and accuracy of the box-supporting mechanism in different box-packing scenarios. Furthermore, the stable lifting motion helps reduce shaking and deviation during equipment operation, improving the stability and reliability of the box-supporting operation. Preferably, the translation mechanism includes a guide rail, a bidirectional drive component, and two sliders. The guide rail is arranged on the lifting plate, and the bidirectional drive component is arranged on the guide rail. The bidirectional drive component drives the two sliders to translate in opposite directions along the guide rail, and the rotating shaft seat is arranged on the corresponding slider. By adopting the above technical solution, the guide rail of the translation mechanism is arranged on the lifting plate, and the bidirectional drive component is arranged on the guide rail, enabling the bidirectional drive component to drive the two sliders to move along the guide rail. Because the sliders and the swing arm assembly have corresponding pivot seats, when the bidirectional drive is working, the two sliders will translate in opposite directions along the guide rail, thereby driving the swing arm assembly to translate in opposite directions. This structural design allows the box-supporting mechanism to flexibly adjust its position in the horizontal direction, accurately aligning the box-supporting fingers with the top corner of the box according to the needs of boxes of different lengths. By driving the sliders with the bidirectional drive, the box-supporting mechanism achieves good horizontal movement performance and positioning accuracy, ensuring the efficiency and accuracy of the box-supporting operation. It also enhances the versatility of the box-supporting mechanism for boxes of different sizes, better adapting to diverse production needs. Preferably, the bidirectional drive is a forward and reverse threaded rod structure.By adopting the above technical solution, the bidirectional drive component uses a positive and negative threaded screw structure. Because the positive and negative threaded screw has both positive and negative threads, when the screw rotates, the mating nut moves in the opposite direction. In the box-supporting mechanism of this packing machine, this structure allows the bidirectional drive component to drive two sliders to translate in opposite directions along the guide rail, realizing the opposite or opposite translational movement of the two swing arm assemblies. Compared with other drive structures, the positive and negative threaded screw structure can precisely control the movement direction and distance of the two sliders, making the box-supporting mechanism's movement more precise and stable, improving the accuracy and reliability of the box-supporting operation. Preferably, it also includes a conveying mechanism for conveying boxes. The lifting mechanism is located on one side of the conveying mechanism, and the box-supporting mechanism is suspended directly above the conveying mechanism. By adopting the above technical solution, the conveying mechanism can realize the automatic conveying of boxes, transporting them to the box-supporting position. Placing the lifting mechanism on one side of the conveying mechanism avoids occupying too much space above the conveying mechanism, ensuring smooth operation of the conveying mechanism. The box-supporting mechanism is suspended directly above the conveying mechanism. When the box is conveyed to the box-supporting position, the lifting mechanism can promptly lower the box-supporting mechanism to the appropriate height to open the box. This avoids the problem of the box not being able to be opened smoothly due to improper position of the box-supporting mechanism, and achieves efficient connection between the conveying and box-supporting processes. This improves the overall working efficiency of the box packing machine, ensures that the box can be opened smoothly for subsequent packing, reduces manual intervention, lowers labor costs, and can better adapt to the needs of large-scale production.

[0007] In summary, this application includes at least one of the following beneficial technical effects: 1. The box-supporting mechanism of the box-packing machine in this application consists only of a lifting mechanism, a translation mechanism and a box-supporting mechanism. One box-supporting mechanism drives two box-supporting fingers to swing, thereby opening the box. This avoids the problem that existing related box-supporting mechanisms require adjustment of multiple parameters, thereby reducing the manufacturing and maintenance costs of the equipment. 2. The box-supporting fingers and the swing arm assembly are detachable. At the same time, the lifting mechanism drives the swing arm assembly to rise or fall, and the translation mechanism can drive the swing arm assembly to translate in opposite directions. The swing arm assembly can synchronously drive the two box-supporting fingers to swing through the rotating shaft. With these structures and driving methods, the box-supporting frame structure of the existing related box-supporting mechanism is not required. The position and angle of the box-supporting fingers can be flexibly adjusted according to the box of different sizes, thereby improving the versatility of the box-supporting mechanism. 3. The supporting fingers of the box correspond one-to-one with the top corner of the box, and each supporting finger abuts against the inner wall of two adjacent surfaces of the corresponding top corner of the box. This structure can stably open the box, ensuring that the product can be smoothly loaded into the box. It avoids product damage and packing failure caused by the box not being opened properly, effectively improving production efficiency and ensuring product quality. Attached Figure Description

[0008] Figure 1 This is a structural diagram of a box-supporting mechanism for a box-packing machine according to this application; Figure 2 yes Figure 1 A magnified view of the swing arm assembly at point A in the middle; Figure 3 yes Figure 1 A magnified view of the fingers supporting the box at point B.

[0009] Explanation of reference numerals in the attached drawings: 1. Conveying mechanism; 2. Lifting mechanism; 3. Translation mechanism; 4. Box support mechanism; 21. Support frame; 22. Lifting screw; 23. Guide shaft; 24. Lifting plate; 31. Guide rail; 32. Bidirectional drive component; 33. Slider; 41. Swing arm assembly; 42. Box support finger; 411. Rotating shaft; 412. Rotating shaft seat; 413. Swing rod; 414. Cylinder; 421. First finger part; 422. Second finger part; 423. Disassembly block. Detailed Implementation

[0010] The following is in conjunction with the appendix Figure 1-3 This application will be described in further detail.

[0011] This application provides a case-supporting mechanism for a case packing machine, as shown in the embodiments below. Figure 1 The system includes a conveying mechanism 1, a lifting mechanism 2, a translating mechanism 3, and a box-supporting mechanism 4. The conveying mechanism 1 transports boxes. The lifting mechanism 2 is located to one side of the conveying mechanism 1 and is connected to the translating mechanism 3 to raise or lower the translating mechanism 3 vertically. The translating mechanism 3 has the box-supporting mechanism 4 horizontally mounted above the conveying mechanism 1, driving it to move horizontally back and forth and supporting the boxes below. The lifting mechanism 2 adjusts the height, the translating mechanism 3 adjusts the width, and the box-supporting mechanism 4 performs the opening operation. Compared to traditional, complex, and less versatile box-supporting mechanisms, this system can be flexibly adjusted according to the height and length of the boxes to accommodate different sizes, improving work efficiency and versatility.

[0012] In this embodiment, the conveying mechanism 1 is a roller conveyor. In other embodiments, a belt conveyor or other conveying mechanism 1 can also be used, as long as the box can be transported smoothly to the box-supporting processing position.

[0013] Specifically, the lifting mechanism 2 in this embodiment includes a support frame 21, a lifting screw 22, a guide shaft 23, and a lifting plate 24. The support frame 21 is vertically mounted to one side of the conveying mechanism 1 by bolts. The support frame 21 supports the entire lifting mechanism 2 and is made of metal, possessing high strength and stability. Its shape is a frame structure designed according to the actual scenario, providing a mounting base for other components. The lifting screw 22 is a key component for realizing the lifting function. It is vertically mounted on the support frame 21 and fixedly connected to the support frame 21 by a nut, ensuring the stability of the screw. The screw adopts a high-precision thread structure to ensure its transmission accuracy. The guide shaft 23 is vertically mounted on the support frame 21. There are two guide shafts 23, each parallel to the two sides of the lifting screw 22. The guide shafts 23 are fixed to the support frame 21 by bushings and, together with the lifting screw 22, provide guidance for the movement of the lifting plate 24. The guide shafts 23 are made of smooth metal shafts to reduce frictional resistance. The lifting plate 24 is a flat plate structure, which is sleeved on the lifting screw 22 and the guide shaft 23. It has a threaded hole that mates with the lifting screw 22 and a smooth sleeve hole that mates with the guide shaft 23. When the lifting screw 22 rotates, it drives the lifting plate 24 to rise or fall along the guide shaft 23.

[0014] The combination logic of the lifting mechanism 2 is as follows: the support frame 21 provides stable support for the entire mechanism; the lifting screw 22, as a power transmission component, converts the rotational motion into the linear motion of the lifting plate 24; and the guide shaft 23 ensures the accurate movement direction of the lifting plate 24, preventing deviation. This combination enables the lifting plate 24 to perform lifting operations smoothly and accurately, providing a basis for height adjustment in subsequent box-supporting actions.

[0015] Specifically, the translation mechanism 3 in this embodiment includes a guide rail 31, a bidirectional drive component 32, and two sliders 33. The guide rail 31 is mounted on the lifting plate 24 along the box conveying direction and is fixedly connected to the lifting plate 24 by bolts. The guide rail 31 is a linear guide rail. The bidirectional drive component 32 is mounted on the guide rail 31, and its function is to drive the two sliders 33 to move towards or in opposite directions along the guide rail 31. In this embodiment, the bidirectional drive component 32 is a positive and negative threaded rod structure, which consists of a threaded rod with positive and negative threads and corresponding nuts. The threaded rod is mounted on the guide rail 31 through a bearing seat, and the two nuts are respectively engaged with the positive and negative threads of the threaded rod. When the threaded rod rotates, the two nuts will move along the positive and negative thread directions respectively, thereby realizing the opposite or opposite movement of the two sliders 33. The sliders 33 are slidably mounted on the guide rail 31. The sliders 33 have grooves inside that are adapted to the guide rail 31, and their shape is adapted to the guide rail 31, allowing them to slide smoothly on the guide rail 31 along the box conveying direction.

[0016] The combination logic of the translation mechanism 3 is as follows: the guide rail 31 provides a path and support for the movement of the slider 33, and the bidirectional drive component 32 provides power, enabling the two sliders 33 to translate towards or in opposite directions as needed. This combination allows for flexible adjustment of the distance between the two sliders 33 to accommodate boxes of different widths.

[0017] Specifically, the box-supporting mechanism 4 in this embodiment includes two swing arm assemblies 41 and four box-supporting fingers 42. It is divided into two groups, with one swing arm assembly 41 and two box-supporting fingers 42 forming a group. Each swing arm assembly 41 includes a rotating shaft 411 and a swinging element. The two rotating shafts 411 are spaced apart on the guide rail 31 along the box conveying direction. The two box-supporting fingers 42 in one group are spaced apart along a direction perpendicular to the box conveying direction, so that the four box-supporting fingers 42 are respectively located above the four apex corners of the box top.

[0018] Reference Figure 2 The swinging component includes a pivot seat 412 and a swing rod 413. The pivot seat 412 is connected to the slider 33 by bolts, so the pivot seat 412 and the slider 33 can be synchronously slidably mounted on the translation mechanism 3. Specifically, the pivot seat 412 is provided with a through hole, and a bearing is provided in the through hole. The rotating shaft 411 passes through the through hole of the pivot seat 412 and is rotatably connected to the bearing, so the rotating shaft 411 can rotate freely in the pivot seat 412. The rotating shaft 411 and the swing rod 413 are connected by a key to achieve synchronous rotation. The other end of the swing rod 413 is rotatably connected to a cylinder 414. The cylinder 414 is mounted on the slider 33 and slides synchronously with the pivot seat 412 on the guide rail 31. When the cylinder 414 drives the swing rod 413 to move, the swing rod 413 will drive the rotating shaft 411 to rotate, thereby driving the support finger 42 to swing. In this embodiment, the initial state of the box-supporting fingers 42 is vertically located directly below the rotating shaft 411. The two sets of box-supporting fingers 42 swing in opposite directions. The swing angle range of the box-supporting fingers 42 is 0°-120°. When the swing angle range is 0°-90°, the box is opened. When the swing angle range is 90°-120°, the box-supporting fingers 42 disengage from the box. When the cylinder 414 drives the box-supporting fingers 42 to return to their original position, the box-supporting fingers 42 can also close the already packed box again, so as to flexibly adapt to the scenario where the box needs to be opened, packed, and closed in the same workstation.

[0019] Reference Figure 3Specifically, the box-supporting finger 42 includes a first finger portion 421, a second finger portion 422, and a disassembly block 423. The disassembly block 423 is fitted onto the outer wall of the rotating shaft 411 and is detachably connected by screws for fastening. The first finger portion 421 is vertically positioned below the disassembly block 423. The second finger portion 422 extends from the first finger portion 421 toward the adjacent surface corresponding to the top corner of the box, forming an obtuse angle between the first finger portion 421 and the second finger portion 422. The bottom of the second finger portion 422 slopes upward toward the adjacent surface corresponding to the top corner of the box. The edges of both the first finger portion 421 and the second finger portion 422 are rounded curves to prevent scratching the box during the box-supporting process.

[0020] The combination logic of the box-supporting mechanism 4 is as follows: the swinging component drives the rotating shaft 411 to rotate, and the rotating shaft 411 drives the box-supporting fingers 42 to swing. Driven by the translation mechanism 3, the two swing arm assemblies 41 translate towards or away from each other, ensuring that the four box-supporting fingers 42 accurately align with the top corners of the box and open it through swinging motion. This combination allows the box-supporting mechanism 4 to be flexibly adjusted according to the size and shape of the box, improving the accuracy and efficiency of box-supporting.

[0021] The implementation principle of this embodiment is as follows: The box-supporting mechanism of this packing machine adjusts the height through the lifting mechanism 2, adjusts the width through the translation mechanism 3, and performs the opening operation through the box-supporting mechanism 4, achieving flexible adaptation to boxes of different sizes. The support frame 21 provides a stable support foundation for the entire mechanism. The lifting screw 22, as a power transmission component, converts the rotational motion into the linear motion of the lifting plate 24. The guide shaft 23 ensures the accurate direction of movement of the lifting plate 24, preventing deviation. When the lifting screw 22 rotates, it drives the lifting plate 24 to rise or fall along the guide shaft 23, thereby adjusting the height of the subsequent box-supporting mechanism 4 to adapt to the box-supporting requirements of boxes of different heights. The guide rail 31 provides a path and support for the movement of the slider 33, and the bidirectional drive component 32 provides power. When the positive and negative threaded rods rotate, the two nuts move along the positive and negative thread directions respectively, driving the two sliders 33 to move towards or in opposite directions along the guide rail 31, thereby flexibly adjusting the distance between the two sliders 33 to adapt to the support requirements of boxes of different widths; Two rotating shafts 411 are spaced apart on the guide rail 31 along the box conveying direction. Two box-supporting fingers 42 of one set are spaced apart in a direction perpendicular to the box conveying direction, so that the four box-supporting fingers 42 are respectively located above the four top corners of the box. The rotating shaft seat 412 is connected to the slider 33 by bolts and can slide synchronously with the slider 33. The rotating shaft 411 passes through the through hole of the rotating shaft seat 412 and is rotatably connected to the bearing. It is connected to the rocker arm 413 by a key to achieve synchronous rotation. The other end of the rocker arm 413 is rotatably connected to the cylinder 414 set on the slider 33. When the cylinder 414 drives the rocker arm 413 to move, the rocker arm 413 drives the rotating shaft 411 to rotate, which in turn drives the box-supporting fingers 42 to swing. The initial state of the box-supporting fingers 42 is vertically located directly below the rotating shaft 411. The two sets of box-supporting fingers 42 swing in opposite directions, with an swing angle range of 0°-120°. When the swing angle is within the range of 0°-90°, the box is in an open state; when the swing angle is within the range of 90°-120°, the box-opening finger 42 disengages from the box, and the cylinder 414 drives the box-opening finger 42 to return to its original position, which can also close the already packed box again. This adapts to scenarios where boxes need to be opened, packed, and closed at the same workstation. Compared with existing related box-opening mechanisms 4, this mechanism has a simpler structure, reduces manufacturing and maintenance costs, improves versatility and work efficiency, and solves the problem that traditional mechanisms cannot meet diverse production needs.

[0022] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A box-supporting mechanism for a box-packing machine, characterized in that, include: The lifting mechanism (2), the translation mechanism (3), and the box-supporting mechanism (4) are provided. The lifting mechanism (2) is used to raise or lower the translation mechanism (3). The box-supporting mechanism (4) includes two swing arm assemblies (41) and four box-supporting fingers (42). The translation mechanism (3) is used to drive the two swing arm assemblies (41) to translate towards or away from each other. Each swing arm assembly (41) can be detachably provided with two box-supporting fingers (42) and drive the box-supporting fingers (42) to swing. Each box-supporting finger (42) corresponds to the top corner of the box. Each box-supporting finger (42) abuts against the inner wall of two adjacent surfaces of the corresponding top corner of the box.

2. The case-supporting mechanism of the case-packing machine according to claim 1, characterized in that, Each of the swing arm assemblies (41) includes a rotating shaft (411) and a swing member. The rotating shaft (411) is provided with two of the box-supporting fingers (42) spaced apart. The swing member is slidably disposed on the translation mechanism (3) and drives the rotating shaft (411).

3. The case-supporting mechanism of the case-packing machine according to claim 2, characterized in that, The swinging component includes a pivot seat (412) and a swing rod (413). The pivot seat (412) is slidably disposed on the translation mechanism (3). The rotating shaft (411) passes through the pivot seat (412) and is connected to the swing rod (413). The rotating shaft (411) is rotatably connected to the pivot seat (412). The rotating shaft (411) and the swing rod (413) rotate synchronously.

4. The case-supporting mechanism of the case-packing machine according to claim 2, characterized in that, The box-supporting finger (42) includes a first finger portion (421) and a second finger portion (422). The first finger portion (421) is detachably connected to the rotating shaft (411) and is located below the rotating shaft (411). The second finger portion (422) extends from the first finger portion (421) toward the adjacent surface of the top corner of the box. The first finger portion (421) and the second finger portion (422) form an obtuse angle.

5. The case-supporting mechanism of the case-packing machine according to claim 4, characterized in that, The bottom of the second finger (422) is inclined upward toward the adjacent surface of the corresponding top corner of the box.

6. The case-supporting mechanism of the case-packing machine according to claim 4, characterized in that, The edges of the first finger portion (421) and the second finger portion (422) are both rounded curves.

7. The case-supporting mechanism of the case-packing machine according to claim 3, characterized in that, The lifting mechanism (2) includes: a support frame (21), a lifting screw (22), a guide shaft (23), and a lifting plate (24). The lifting screw (22) and the guide shaft (23) are parallel and vertically arranged on the support frame (21). The lifting plate (24) is sleeved on the lifting screw (22) and the guide shaft (23). The lifting screw (22) drives the lifting plate (24) to rise or fall along the guide shaft (23).

8. The case-supporting mechanism of the case-packing machine according to claim 7, characterized in that, The translation mechanism (3) includes a guide rail (31), a bidirectional drive member (32), and two sliders (33). The guide rail (31) is disposed on the lifting plate (24), and the bidirectional drive member (32) is disposed on the guide rail (31). The bidirectional drive member (32) drives the two sliders (33) to translate in opposite directions along the guide rail (31). The rotating shaft seat (412) is disposed on the corresponding slider (33).

9. The case-supporting mechanism of the case-packing machine according to claim 8, characterized in that, The bidirectional drive component (32) is a positive and negative threaded rod structure.

10. The case-supporting mechanism of the case-packing machine according to claim 1, characterized in that, It also includes a conveying mechanism (1) for conveying boxes, a lifting mechanism (2) located on one side of the conveying mechanism (1), and a box-supporting mechanism (4) suspended directly above the conveying mechanism (1).

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