Box closing device

Abstract

The application provides a boxing device and a boxing equipment. The boxing device comprises a crossbeam, a frame assembly arranged on the crossbeam, and a plurality of groups of rollers mounted on the frame assembly. The frame assembly comprises a fixing frame and connecting frames arranged on both sides of the fixing frame. The fixing frame is connected with the crossbeam. The top of the connecting frame is arranged on the top of the crossbeam. The bottom of the connecting frame is arranged below the crossbeam and is connected with the plurality of groups of rollers. The boxing device can improve the stability, realize uniform seams of the box during the boxing operation, and ensure the boxing quality.

Description

Technical Field

[0001] This application relates to the field of packaging technology, and in particular to a carton sealing device and a carton sealing equipment. Background Technology

[0002] During the packaging and transportation of the box, the top cover of the box needs to be sealed. The top cover of the box is tightly sealed with tape. Due to differences in the structural strength of the box and the manufacturing process, if the seam of the top cover is too large when it is closed, the tape cannot seal the top cover tightly. With the bumps during transportation, the top cover seal may fail.

[0003] The stability of the sealing device in existing box sealing equipment is poor. When the sealing device applies force to the side wall of the box, it cannot guarantee the uniformity of the overall joint, thus increasing the risk of sealing failure. Utility Model Content

[0004] The purpose of this application is to solve the aforementioned technical problems by providing a box-sealing device and a box-sealing equipment, thereby improving the stability of the box-sealing device, ensuring uniform seams in the box during sealing operations, and guaranteeing sealing quality. To achieve the above objective, the technical solution of this application is as follows:

[0005] In a first aspect, this application provides a loading box device, including a crossbeam, a frame assembly disposed on the crossbeam, and a plurality of rollers mounted on the frame assembly; the frame assembly includes a fixing frame and connecting frames disposed on both sides of the fixing frame, the fixing frame is connected to the crossbeam, the top of the connecting frame is disposed on the top of the crossbeam, the bottom of the connecting frame is located below the crossbeam, and the plurality of rollers are connected thereto.

[0006] In one possible implementation, the relative distance between the connecting frames located on both sides of the fixed frame is adjustable, and each set of rollers is arranged in pairs at the bottom of the opposite connecting frames, with the rolling surface of the rollers set to abut against the side wall of the housing.

[0007] In one possible implementation, an adjustment part is provided between the fixed frame and the connecting frame, and the connecting frame adjusts the relative distance through the adjustment part.

[0008] In one possible implementation, a mounting bracket is connected between the fixed frame and the crossbeam, the mounting bracket is connected to the middle of the fixed frame, and the middle of the connecting bracket abuts against the crossbeam.

[0009] In one possible implementation, the mounting bracket has a snap-fit ​​portion, which abuts against the mounting bracket and the connecting bracket respectively.

[0010] In one possible implementation, the crossbeam passes through the connecting frame, the fixing frame is perpendicularly connected to the connecting frame, and the opposite connecting frames are arranged in parallel.

[0011] Secondly, this application provides a box sealing device, including the aforementioned box sealing device and a conveyor line for conveying boxes. The box sealing device is located above the conveyor line, and the crossbeam of the box sealing device is mounted on a lifting device.

[0012] In one possible implementation, a first sealing tape device is provided on the crossbeam, and the first sealing tape device is located between opposing connecting frames.

[0013] In one possible implementation, the first tape sealing device includes a mounting base, a connecting roller group, and a cutter assembly; the connecting roller group is arranged in conjunction with the conveying direction of the conveyor line, and both the connecting roller group and the cutter assembly are rotatable and vertically adjustable relative to the mounting base.

[0014] In one possible implementation, the box sealing equipment further includes a box pushing device and a second sealing belt device. The box pushing device is located above the conveyor line, and the second sealing belt device is disposed on the conveyor line. The box pushing device includes pusher conveyor belts that are spaced apart and whose relative distance is adjustable, and the second sealing belt device is located between opposite pusher conveyor belts.

[0015] Compared with the prior art, the advantages of the carton sealing device and carton sealing equipment in this application are mainly reflected in:

[0016] The frame assembly is connected to the crossbeam, and the frame assembly has good structural stability. The connecting frame of the frame assembly is set on the crossbeam, and the bottom of the connecting frame is used to install multiple sets of rollers to ensure that the multiple sets of rollers can stably carry out the box-sealing operation. The multiple sets of rollers apply uniform force to the side wall of the box, and the top cover of the box has uniform seams during the sealing operation, ensuring the sealing quality. Attached Figure Description

[0017] Figure 1 One of the structural schematic diagrams of a sump packing device provided for an embodiment of this application;

[0018] Figure 2 for Figure 1 The diagram shown is a structural schematic of one embodiment of the duct box device;

[0019] Figure 3 A schematic diagram of a box sealing device provided for an embodiment of this application;

[0020] Figure 4 for Figure 3 The diagram shows an assembly of the first sealing tape device and the box device in one embodiment.

[0021] Figure 5 for Figure 3 The diagram shows a partial disassembly of the first sealing tape device in one embodiment;

[0022] Figure 6 for Figure 3The cutter assembly shown is a structural schematic diagram of one embodiment;

[0023] Figure 7 for Figure 3 The cutter assembly shown is illustrated in the second structural diagram of one embodiment.

[0024] Figure label:

[0025] 1. Crossbeam; 11. Reinforcing end plate;

[0026] Frame component 2, fixing bracket 21, connecting bracket 22, mounting bracket 23, snap-fit ​​part 24, upper connecting part 25, lower connecting part 26, side connecting part 27;

[0027] Roller 3;

[0028] Adjustment part 4, adjustment hole 41, adjustment component 42;

[0029] 51. Conveyor line; 52. Lifting device; 53. First sealing belt device; 54. Pushing box device; 55. Second sealing belt device;

[0030] Mounting base 61, connecting roller group 62, cutter assembly 63;

[0031] Front roller body 71, rear roller body 72, first rotating rod 73, second rotating rod 74, connecting rod 75, elastic pull rod 76, material roller 77, guide roller 78;

[0032] Cutting blade part 81, protective part 82, cutting blade support 83, protective support 84, torsion spring 85, cutting blade seat 86. Detailed Implementation

[0033] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0034] Example 1

[0035] This embodiment provides a box sealing device, which is applied to a box sealing equipment. The box sealing equipment uses the box sealing device during the process of sealing the box with tape, thereby applying force to the side wall of the box and reducing the seam distance of the top cover of the box by squeezing.

[0036] In related technologies, the force applied to the side wall of the box by the packing device is unstable, which makes the seam of the box top cover prone to failure after the tape is applied, affecting the packaging quality and transportation efficiency of the box. This embodiment solves the above problems by improving the packing device and enhancing its stability, which will be described in detail below.

[0037] like Figure 1 , Figure 2 As shown, the gantry device includes a crossbeam 1, a frame assembly 2 mounted on the crossbeam 1, and multiple sets of rollers 3 mounted on the frame assembly 2. The crossbeam 1 is movable and can be raised and lowered. The frame assembly 2 includes a fixed frame 21 and a connecting frame 22. The fixed frame 21 is connected to the crossbeam 1. The relative distance between the connecting frames 22 located on both sides of the fixed frame 21 is adjustable. The top of the connecting frame 22 is located on the top of the crossbeam 1, and the bottom of the connecting frame 22 is located below the crossbeam 1 and is connected to multiple sets of rollers 3.

[0038] Among them, the crossbeam 1 can be a hollow tube beam structure, specifically in the form of a roughly square column structure. The shape of the crossbeam 1 can also be other structures, so that the crossbeam 1 has good support performance and can achieve the effect of weight reduction.

[0039] The two ends of the crossbeam 1 are respectively provided with reinforcing end plates 11. The reinforcing end plates 11 have folded edges (not shown in the figure). The folded edges are connected to at least part of the outer wall of the crossbeam 1. The connection method between the folded edges and the crossbeam 1 is not limited to welding or screwing. The folded edges provide better connection strength for the end of the crossbeam 1. The lifting and moving function of the crossbeam 1 is realized by the lifting device 52. The crossbeam 1 is connected to the lifting device 52 through the reinforcing end plates 11. Then the driving force of the lifting device 52 is transmitted to the crossbeam 1, so that the crossbeam 1 can move up and down stably.

[0040] In this embodiment, the frame assembly 2 is connected to the crossbeam 1, enabling the frame assembly 2 to also have the function of lifting and moving, which can adaptively adjust the appropriate height of the box and improve the efficiency of the box-loading operation. The frame assembly 2 has good structural stability. The frame assembly 2 is used to install multiple sets of rollers 3, and the relative distance between the connecting frames 22 is adjustable, which can be used for boxes of different sizes. The connecting frames 22 are set on the crossbeam 1, and the bottom of the connecting frames 22 is connected to multiple sets of rollers 3, ensuring that the multiple sets of rollers 3 stably carry out the box-loading operation. The force applied by the multiple sets of rollers 3 to the side wall of the box is uniform, and the top cover of the box has uniform seams and small seam distance during the sealing operation, ensuring the sealing quality.

[0041] In one embodiment, each set of rollers 3 is arranged in pairs at the bottom of the opposite connecting frame 22, and the rolling surface of the rollers 3 is configured to abut against the side wall of the housing.

[0042] Among them, such as Figure 1 , Figure 2As shown, multiple rollers 3 are arranged at the bottom of the connecting frame 22, and the multiple rollers 3 are arranged sequentially along the conveying direction of the box; multiple rollers 3 are provided at the bottom of the two opposite connecting frames 22, and the number of rollers 3 on the two connecting frames 22 is equal. Thus, the rollers 3 on the two connecting frames 22 are arranged in pairs, and the two pairs of rollers 3 form a group. When the box is conveyed between the two connecting frames 22, it ensures that the same force is applied to the opposite side walls of the box, thereby improving the uniformity of the seam of the top cover of the box.

[0043] In one embodiment, an adjustment part 4 is provided between the fixed frame 21 and the connecting frame 22, and the relative distance between the connecting frame 22 and the adjusting part 4 is adjusted.

[0044] like Figure 1 , Figure 2 As shown, the adjusting part 4 can be configured as an adjusting element 42 cooperating with the adjusting hole 41. One of the fixed frame 21 and the connecting frame 22 is provided with the adjusting hole 41, and the other is provided with the adjusting element 42. The adjusting hole 41 can be an elongated hole structure, and the adjusting element 42 passes through the adjusting hole 41 and is movable along the adjusting hole 41. For example, the fixed frame 21 is provided with the adjusting hole 41, and the adjusting element 42 passes through the adjusting hole 41 to assemble the fixed frame 21 and the connecting frame 22. The adjusting element 42 can be a bolt. Multiple adjusting parts 4 can be provided between the fixed frame 21 and the connecting frame 22. The connecting frame 22 can be moved and adjusted relative to the fixed frame 21 through the adjusting parts 4. When the movement and adjustment are in place, the adjusting element 42 is tightened to fix the connecting frame 22 and the fixed frame 21, effectively controlling the distance between the relative connecting frames 22. The fixed frame 21 and the connecting frame 22 have a stable connection relationship and good connection strength through the cooperation of the adjusting parts 4.

[0045] In one embodiment, the fixing frame 21 is connected to the crossbeam 1 via the mounting frame 23, the mounting frame 23 is connected to the middle of the fixing frame 21, and the middle of the connecting frame 22 abuts against the crossbeam 1.

[0046] like Figure 1 , Figure 2 , Figure 4 As shown, the mounting frame 23 is used to install the first sealing tape device 53. The two sides of the mounting frame 23 are respectively connected to the crossbeam 1. One end of the mounting frame 23 along the conveying direction of the box is connected to the middle of the fixed frame 21, so that the fixed frame 21 has a better balanced support force.

[0047] The connecting frame 22 has a roughly hollow rectangular frame structure. It is formed by an upper connecting part 25, a lower connecting part 26, and two side connecting parts 27. One end of the connecting frame 22 is connected to the fixed frame 21, meaning both the upper connecting part 25 and one side connecting part 27 are connected to the fixed frame 21. The bottom of the middle part of the upper connecting part 25 abuts against the top of the crossbeam 1, maintaining the structural balance of the connecting frame 22 placed on the crossbeam 1. The lower connecting part 26 is located below the crossbeam 1, and multiple rollers 3 are installed at the bottom of the lower connecting part 26.

[0048] The spacing between the upper connecting part 25 and the lower connecting part 26 is adapted to the thickness of the crossbeam 1. The crossbeam 1 can be inserted between the upper connecting part 25 and the lower connecting part 26, and the crossbeam 1 provides support for the upper connecting part 25.

[0049] In one embodiment, the fixing frame 21 has a snap-fit ​​portion 24, which abuts against the mounting frame 23 and the connecting frame 22 respectively.

[0050] like Figure 1 , Figure 2 As shown, the fixing frame 21 has an approximately L-shaped structure. The snap-fit ​​part 24 can be the inner corner structure of the fixing frame 21. One side of the fixing frame 21 abuts against the upper connecting part 25, and the adjacent side of the fixing frame 21 abuts against the one-side connecting part 27. Thus, the fixing frame 21 is positioned with the connecting frame 22 through the snap-fit ​​part 24, which facilitates the subsequent installation and fixing of the fixing frame 21 and the connecting frame 22 through the adjustment part 4.

[0051] The mounting bracket 23 has a mounting part (not marked in the figure) at one end along the conveying direction of the box, that is, the top corner of the mounting bracket 23. The mounting part abuts against the snap-fit ​​part 24, thereby realizing the positioning and cooperation between the fixing bracket 21 and the mounting bracket 23, which facilitates the connection and fixation of the fixing bracket 21 and the mounting bracket 23. The connection method between the mounting bracket 23 and the fixing bracket 21 is not limited to screw connection or snap-fit.

[0052] In one embodiment, the crossbeam 1 is disposed through the connecting frame 22, the fixing frame 21 is perpendicularly connected to the connecting frame 22, and the opposite connecting frames 22 are disposed parallel to each other.

[0053] like Figure 1 , Figure 2 As shown, the fixed frame 21 and the connecting frame 22 are perpendicularly connected at one end along the conveying direction of the box; the opposite connecting frames 22 are parallel, and the fixed frame 21 and the two connecting frames are assembled to form an approximate C-shaped structure. At the same time, the connecting frame 22 also abuts against the crossbeam 1. The frame assembly 2 has better structural performance and more stable support.

[0054] In other embodiments, the connecting frame 22 is connected to the fixed frame 21 at both ends along the conveying direction of the box. The two fixed frames 21 and the two connecting frames 22 form a roughly rectangular frame structure, which has better structural stability than a single fixed frame 21. Considering the weight reduction effect and the spatial layout of other components, the C-shaped frame component 2 can meet the support performance requirements.

[0055] Example 2

[0056] This embodiment provides a box sealing device, including the box sealing device in the above embodiment and a conveyor line 51 for conveying the box. The box sealing device is located above the conveyor line 51, and the crossbeam 1 of the box sealing device is installed on the lifting device 52. The lifting device 52 is located on both sides of the conveyor line 51.

[0057] like Figure 3 As shown, the conveyor line 51 can be driven by conveyor rollers, belts, or other methods. The lifting device 52 drives the crossbeam 1, which in turn drives the box assembly and the first sealing belt assembly 53 to lift synchronously.

[0058] The lifting device 52 can adopt a screw and nut structure. The reinforcing end plate 11 located at the end of the crossbeam 1 can serve as the nut mating part of the screw and nut structure, thereby converting the rotational motion of the screw into the linear movement of the crossbeam 1. The lifting device 52 is not limited to the screw and nut structure, and can also be driven by electricity, pneumatics, etc.

[0059] In one embodiment, a first sealing tape device 53 is provided on the crossbeam 1, and the first sealing tape device 53 is located between the opposing connecting frames 22.

[0060] like Figure 4 As shown, when there is a box being conveyed between the opposing connecting frames 22, the first sealing tape device 53 can perform the sealing tape operation when the box conveying device is performing box conveying operation on the side wall of the box, ensuring the effectiveness of the sealing tape operation. The opposing connecting frames 22 are effectively guided by multiple sets of rollers 3 and apply force to the side wall of the box, reducing the seam distance of the box top cover, and working with the first sealing tape device 53 to adhere the tape to the seam position.

[0061] In one embodiment, the first tape sealing device 53 includes a mounting base 61, a connecting roller group 62 for guiding the tape and pressing it to the top of the box, and a cutter assembly 63 for cutting the tape; the connecting roller group 62 is arranged in conjunction with the conveying direction of the conveyor line 51, and both the connecting roller group 62 and the cutter assembly 63 are rotatable and raised / lowered relative to the mounting base 61.

[0062] like Figure 4 , Figure 5As shown, the connecting roller group 62 and the cutter assembly 63 are both set in the mounting base 61, which is set in the mounting frame 23, so as to realize the quick assembly of the first sealing tape device 53 and the mounting frame 23. The first sealing tape device 53 can be replaced according to different sealing requirements.

[0063] The linkage roller assembly 62 includes a front roller body 71 and a rear roller body 72. The front roller body 71 is axially connected to the front end of the mounting base 61 via a first rotating rod 73, and the rear roller body 72 is axially connected to the rear end of the mounting base 61 via a second rotating rod 74. A connecting rod 75 connects the first rotating rod 73 and the second rotating rod 74. The connecting rod 75 is hinged to the first rotating rod 73 above the axial connection position, and the other end of the connecting rod 75 is hinged to the second rotating rod 74 below the axial connection position. When the first rotating rod 73 rotates clockwise, the second rotating rod 74 rotates counterclockwise, thereby realizing the linkage function between the front roller body 71 and the rear roller body 72. The bottom end of the second rotating rod 74 is connected to the rear roller body 72, and the top end of the second rotating rod 74 is connected to the mounting base 61 via an elastic pull rod 76. The elastic pull rod 76 is located above the axial connection position of the second rotating rod 74.

[0064] The first tape sealing device 53 also includes a feed roller 77, on which tape is fed to a front roller body 71, with the adhesive side of the tape facing the top cover of the housing and the back side of the tape abutting against the front roller body 71. The front roller body 71 presses the tape to adhere it to the top cover of the housing.

[0065] To ensure that the conveyor belt is accurately positioned to the front roller body 71, multiple guide rollers 78 are also provided on the mounting base 61 to guide the conveyor belt and give it a certain conveying tension.

[0066] like Figure 6 , Figure 7 As shown, the cutter assembly 63 includes a cutter part 81 and a protective part 82 that are axially connected to the mounting base 61. The protective part 82 is elastically connected to the cutter part 81, specifically, the protective part 82 and the cutter part 81 are connected by a torsion spring 85. The blade arrangement direction of the protective part 82 and the cutter part 81 is the same, which is used to protect the blade of the cutter part 81. Under normal conditions, the cutter part 81 is stored in the protective part 82.

[0067] The cutting blade part 81 is connected to a downwardly extending cutting blade support member 83 via a cutting blade seat 86. Specifically, the cutting blade part 81 has an approximately L-shaped structure, with a downward-facing blade on one side. The adjacent side of the cutting blade part 81 is connected to the cutting blade seat 86, and the cutting blade support member 83 is mounted on the cutting blade seat 86. The cutting blade seat 86 is rotatably connected to the mounting base 61.

[0068] The protective part 82 is provided with a downwardly extending protective support 84. The cutter assembly 63 is located between the front roller body 71 and the rear roller body 72, and the cutter part 81 is closer to the front roller body 71 than the protective part 82. The protective part 82 is located on the side of the cutter part 81 that is away from the front roller body 71.

[0069] When the box body enters below the cutter assembly 63, the cutter support 83 contacts the top cover of the box body first, before the protective support 84. Then, the cutter part 81 and the protective part 82 rotate and rise, and the cutter part 81 does not contact the tape. When the top cover of the box body moves out of the position of the cutter part 81, the cutter support 83 detaches from the top cover of the box body and loses its supporting force. At this time, the protective support 84 is supported by the top cover of the box body. The cutter part 81 rotates and falls due to its own weight to cut the tape, and the torsion spring 85 is stretched. As the box body continues to be conveyed, when the top cover of the box body moves out of the position of the protective part 82, the protective support 84 loses the supporting force of the box body. The protective support 84 rotates again due to the contraction of the torsion spring 85 and blocks the cutter part 81.

[0070] The front roller 71 is located in front of the box in the conveying direction, and the rear roller 72 is located behind the box in the conveying direction. During the conveying process, when the box enters the first sealing tape device 53, as the box moves, the top cover of the box first contacts the front roller 71. The front roller 71 rotates and rises under force, and the rear roller 72 rises together with the front roller 71. Simultaneously, the elastic pull rod 76 stretches, and as the box moves, the front roller 71 presses the tape against the top cover of the box. When the box moves out of the position of the front roller 71, the supporting force of the front roller 71 is released. As the box moves out of the position of the cutter assembly 63, the cutter assembly 63 cuts the tape. At this time, the rear roller 72 falls last due to the support of the top cover of the box. The rear roller 72 presses the tape against the top cover of the box. When the box moves out of the position of the rear roller 72, the elastic pull rod 76 retracts, and the rear roller 72 rotates and descends, causing the rear roller 72 to slide from the top cover of the box to the side wall of the box. The rear roller 72 has a certain lateral pressure when it contacts the side wall of the box, so that the tape is cut and the end is tightly attached to the side wall of the box.

[0071] In one embodiment, the box sealing equipment further includes a box pushing device 54 and a second sealing tape device 55. The box pushing device 54 is located above the conveyor line 51, and the second sealing tape device 55 is disposed on the conveyor line 51. The box pushing device 54 includes pusher conveyor belts that are spaced apart and whose relative distance is adjustable, and the second sealing tape device 55 is located between opposite pusher conveyor belts.

[0072] like Figure 3As shown, the box-pushing device 54 also includes a box-pushing drive component (not shown) for driving the relative pusher conveyor belt to move. The box-pushing drive component is not limited to a screw and nut structure, but can also be an electric drive component or a pneumatic drive component. The pusher conveyor belt can clamp the conveyor box, ensuring that the box moves stably during the sealing operation and preventing the box from falling back under force.

[0073] The surface of the pusher conveyor belt has an anti-slip layer (not shown in the figure), which increases the friction with the side wall of the box and ensures stable transport of the box.

[0074] The second sealing tape device 55 can have the same structure as the first sealing tape device 53. The second sealing tape device 55 is used to seal the bottom cover of the box with tape. The second sealing tape device 55 and the first sealing tape device 53 are arranged symmetrically from top to bottom. Space is reserved in the conveyor line 51 for installing the second sealing tape device 55, so as not to affect the normal conveying of the box. The second sealing tape device 55 can also have other structures, which can be applied to the sealing tape operation of the box in this application.

[0075] In the description of this application:

[0076] Unless otherwise stated, directional terms such as "up" and "down" usually refer to the relative positions of the corresponding components in the direction of gravity when they are in use.

[0077] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0078] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, a direct connection, or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0079] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended embodiments are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0080] Obviously, those skilled in the art can make various changes and modifications to this application without departing from the inventive concept and scope of this application. Therefore, if such modifications and modifications fall within the scope of this application and its equivalents, this application also intends to include such modifications and modifications.

Claims

1. A trough-shaped box device, characterized in that: It includes a crossbeam (1), a frame assembly (2) disposed on the crossbeam (1), and multiple sets of rollers (3) mounted on the frame assembly (2); the frame assembly (2) includes a fixing frame (21) and connecting frames (22) disposed on both sides of the fixing frame (21), the fixing frame (21) is connected to the crossbeam (1), the top of the connecting frame (22) is disposed on the top of the crossbeam (1), the bottom of the connecting frame (22) is located below the crossbeam (1), and multiple sets of rollers (3) are connected.

2. The duct box device according to claim 1, characterized in that: The relative distance between the connecting frames (22) located on both sides of the fixed frame (21) is adjustable. Each set of rollers (3) is arranged in pairs at the bottom of the opposite connecting frames (22), and the rolling surface of the rollers (3) is set to abut against the side wall of the box.

3. The duct box device according to claim 1, characterized in that: An adjustment part (4) is provided between the fixed frame (21) and the connecting frame (22), and the relative distance between the connecting frame (22) and the connecting frame (22) is adjusted through the adjustment part (4).

4. The duct box device according to claim 1, characterized in that: A mounting bracket (23) is connected between the fixed frame (21) and the crossbeam (1). The mounting bracket (23) is connected to the middle part of the fixed frame (21), and the middle part of the connecting bracket (22) abuts against the crossbeam (1).

5. The duct box device according to claim 4, characterized in that: The fixing frame (21) has a snap-fit ​​part (24), and the fixing frame (21) abuts against the mounting frame (23) and the connecting frame (22) respectively through the snap-fit ​​part (24).

6. The duct box device according to claim 1, characterized in that: The crossbeam (1) is installed through the connecting frame (22), the fixing frame (21) is vertically connected to the connecting frame (22), and the opposite connecting frame (22) is installed in parallel.

7. A box sealing device, characterized in that: Includes a box-carrying device as described in any one of claims 1-6 and a conveyor line (51) for conveying boxes, wherein the box-carrying device is located above the conveyor line (51) and the crossbeam (1) of the box-carrying device is mounted on a lifting device (52).

8. The sealing device according to claim 7, characterized in that: A first sealing tape device (53) is provided on the crossbeam (1), and the first sealing tape device (53) is located between the opposite connecting frames (22).

9. The sealing device according to claim 8, characterized in that: The first sealing tape device (53) includes a mounting base (61), a connecting roller group (62), and a cutter assembly (63); the connecting roller group (62) is arranged in conjunction with the conveying direction of the conveyor line (51), and both the connecting roller group (62) and the cutter assembly (63) are rotatable and raised / lowered relative to the mounting base (61).

10. The sealing device according to claim 7, characterized in that: The sealing equipment also includes a box pushing device (54) and a second sealing tape device (55). The box pushing device (54) is located above the conveyor line (51), and the second sealing tape device (55) is disposed on the conveyor line (51). The box pushing device (54) includes a pusher conveyor belt that is spaced apart and whose relative distance is adjustable. The second sealing tape device (55) is located between the opposite pusher conveyor belts.

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