Packaging box sealing device

Abstract

The utility model discloses a packaging box sealing device which comprises a device rack, a conveying channel for conveying packaging boxes is arranged on the device rack, and a box sealing station is arranged in the conveying channel. The box sealing device comprises a limiting unit, a box sealing mechanism and a top pressing mechanism, the limiting unit limits the packaging box at the box sealing station, the box sealing mechanism seals a cover body of the packaging box located at the box sealing station, and the top pressing mechanism is located above the conveying channel at the box sealing station. The top pressing mechanism comprises a pressing driving part and a pressing part, the pressing part is arranged at the output end of the pressing driving part and can move in the height direction of the conveying channel to enter the packaging box and press objects in the packaging box, and the box sealing mechanism pushes a cover body of the packaging box to be turned over and sealed. According to the device, the top pressing mechanism is arranged to be matched with the box sealing mechanism, so that the box sealing efficiency of the box sealing device is improved.

Description

Technical Field

[0001] This utility model relates to the field of packaging-related technology, and in particular to a sealing device for packaging boxes. Background Technology

[0002] Sealing is a core process in the packaging of goods. Its function is to fix the packaging structure, protect the safety of goods, and ensure the stability of transportation and storage. Currently, there are sealing equipment or sealing devices on the market to seal packaging boxes. The working method is mostly to transport the packaging box on the assembly line. After being transported to the sealing station, the lid of the packaging box is folded and sealed by the folding mechanism set at the sealing station, and then the box is sealed by tape.

[0003] However, some items, when stacked inside a packaging box, may protrude beyond the box opening, affecting the sealing process. This necessitates manually pressing the items down firmly before sealing the box. For example, large quantities of packaging bags are typically stacked before being placed inside boxes for easier storage and transport. However, because packaging bags need to be flattened after forming and each bag has a certain thickness, gaps can easily form inside individual bags and between adjacent bags when multiple bags are stacked into a box. This causes multiple bags to protrude beyond the box opening, interfering with the box lid and preventing it from folding open and sealing smoothly.

[0004] To address these issues, existing solutions rely on manual pressing of the packaging bags inside the box before sealing. This compacts the bags and prevents any protruding bags from the box opening, ensuring the flap folding mechanism can seal the box smoothly. However, this manual pressing method suffers from low sealing efficiency, cannot match the pace of automated production lines, and fails to meet the requirements of automated production for large-volume packaging.

[0005] Therefore, existing sealing devices still require manual pressing before sealing the contents of a box, such as a bag, resulting in low sealing efficiency. Utility Model Content

[0006] The purpose of this application is to solve the problem that in the prior art, when sealing items such as bags inside a box, manual pressing is still required before sealing, resulting in low sealing efficiency.

[0007] To address the aforementioned technical problems, this application discloses a box sealing device, including a frame with a conveying channel for transporting the boxes, and a sealing station within the conveying channel. The sealing device includes a limiting unit, a sealing mechanism, and a top pressing mechanism. The limiting unit limits the box at the sealing station, the sealing mechanism seals the lid of the box at the sealing station, and the top pressing mechanism is positioned above the conveying channel at the sealing station.

[0008] The top pressing mechanism includes a pressing drive component and a pressing component. The pressing drive component is fixedly mounted on the device frame, and the pressing component is located at the output end of the pressing drive component and can move along the height direction of the conveying channel. The pressing component includes a pressing member, which can move along the height direction. After the pressing member enters the packaging box at the sealing station and presses down on the items inside, the sealing mechanism pushes the lid of the packaging box to flip and seal it.

[0009] The limiting unit includes a pair of width limiting components located on both sides of the sealing station in the width direction of the conveying channel. The pair of width limiting components extend along the length direction of the conveying channel and are disposed on the device frame, located below the lid of the packaging box in the height direction of the packaging box. Furthermore, the two sides of the pair of width limiting components that are opposite to each other in the width direction are in contact with the corresponding two side walls of the packaging box located at the sealing station.

[0010] Using the above technical solution, after the packaging box is transported to the sealing station in the conveying channel, the items inside the packaging box can be pressed by the top pressing mechanism. For example, when the items inside the packaging box are packaging bags, the top pressing mechanism can press the multiple packaging bags stacked inside the packaging box tightly, so that the top of the packaging bags inside the packaging box is lower than or flush with the box opening. This solves the problem of packaging bags protruding from the box opening and interfering with the sealing of the packaging box after being stacked. The pressing drive component can drive the pressing component to move along the height direction and enter the packaging box in the sealing station to press the items inside the packaging box. There is no need to manually press the packaging bags, reducing manual operation links. After the items inside the packaging box are pressed, the sealing mechanism pushes the lid of the packaging box to flip and seal it. The pressing action of the top pressing mechanism and the sealing action of the sealing mechanism work together to improve the automation level of the sealing device and the overall sealing efficiency.

[0011] Furthermore, a pair of width limiting components located on both sides of the sealing station in the width direction of the conveying channel can prevent the packaging box from shifting or shaking during the pressing and sealing process, so as to ensure that the packaging box is stably conveyed to the sealing station, ensure that the pressing component is aligned with the packaging bag inside the packaging box to press it, and ensure that the sealing mechanism acts precisely on the lid to seal the box, thereby improving the sealing quality.

[0012] The embodiments of this application also disclose a box sealing device, wherein the pressing component further includes a pair of stop members respectively disposed on both sides of the pressing component.

[0013] The pressing component includes a pressing plate disposed at the output end of the pressing drive component, and a pair of stop components configured as a pair of stop rods. The pair of stop rods are spaced apart on both sides of the pressing plate along the width direction of the conveying channel and are respectively connected to the output end for transmission. The pressing plate and the stop rods can move along the height direction respectively.

[0014] Using the above technical solution, when the pressing drive component drives the pressing component to move downwards to press the items inside the packaging box, the pressing plate and a pair of stop components can work together to press the items inside the packaging box, resulting in a better pressing effect. The pressing component is set as a pressing plate, and the side of the pressing plate facing the items inside the packaging box has a larger contact surface, so pressing the items inside the packaging box is more stable. A pair of stop bars are set on both sides of the pressing plate. When the pressing plate moves upwards and is withdrawn, the pair of stop bars can stop the items inside the packaging box to prevent the items inside the packaging box from rebounding and avoid interference with the lid when sealing the box.

[0015] The embodiments of this application also disclose a box sealing device. The box sealing mechanism includes a pair of first sealing assemblies and a pair of second sealing assemblies. The pair of first sealing assemblies are located on both sides of the top pressing mechanism in the length direction of the conveying channel, and the pair of second sealing assemblies are respectively installed on both sides of the box sealing station in the width direction.

[0016] Each first capping assembly is mounted on the top of the device frame and includes a first capping member movable along the height and conveying direction of the conveying channel; a pair of first capping members can move synchronously along the conveying direction. Each second capping assembly is mounted on the device frame and includes a second capping member movable along the width direction of the conveying channel; a pair of second capping members can move synchronously along the width direction.

[0017] The packaging box is conveyed along the conveyor channel to the sealing station and located below the top pressing mechanism. The pressing plate and a pair of stop members move along the height direction into the packaging box and press the items inside the packaging box. The pressing plate moves upward along the height direction to exit the packaging box. A pair of first sealing members move downward along the height direction and move towards each other in the conveying direction, pushing the first box covers on both sides of the packaging box in the conveying direction to flip to the first sealing state. A pair of stop bars move upward along the height direction to exit the packaging box. A pair of second sealing members move towards each other in the width direction and push the second box covers on both sides of the packaging box in the width direction to flip to the second sealing state.

[0018] By adopting the above technical solution, the sealing mechanism can seal the lids of the packaging box in different directions by setting a pair of first sealing components in the length direction of the conveying channel and a pair of second sealing components in the width direction, making the sealing action of the sealing mechanism smoother and improving the sealing efficiency.

[0019] The embodiments of this application also disclose a box sealing device, wherein each first sealing assembly further includes a first vertical driving unit and a first horizontal driving unit, wherein the first horizontal driving unit is disposed at the output end of the first vertical driving unit, and the first sealing member is disposed at the output end of the first horizontal driving unit; wherein the first vertical driving unit can drive the first horizontal driving unit and the first sealing member to move along the height direction, and the first horizontal driving unit can drive the first sealing member to move along the conveying direction.

[0020] Each second capping assembly also includes a second lateral drive unit, with the second capping member disposed at the output end of the second lateral drive unit and movable in the width direction.

[0021] Using the above technical solution, the first sealing assembly includes a first vertical driving unit and a first horizontal driving unit. The first vertical driving unit and the first horizontal driving unit cooperate to drive the first sealing component to move along the height direction and the conveying direction of the conveying channel, thereby achieving the sealing of the lids on both sides of the packaging box in the conveying direction. A pair of second horizontal driving units can drive a pair of second sealing components to move synchronously along the width direction, thereby achieving the sealing of the lids on both sides of the packaging box in the width direction of the conveying channel, and finally achieving the sealing of the lids of the packaging box.

[0022] The embodiments of this application also disclose a box sealing device. The limiting unit further includes a width adjustment component. The width adjustment component is disposed on the device frame, is connected to a pair of width limiting components, and can drive the pair of width limiting components to move in the width direction relative to the conveying channel.

[0023] By adopting the above technical solution, the width adjustment component can drive a pair of width limiting components to flexibly adjust in the width direction of the conveying channel, thereby adjusting the spacing between the pair of width limiting components in the width direction of the conveying channel. This allows for the adaptation to packaging boxes of different sizes, ensuring that packaging boxes of different sizes can be stably and accurately conveyed to the sealing station for sealing. This improves the versatility and application range of the sealing device. For example, when the packaging box to be sealed is changed from a smaller packaging box to a larger packaging box, the width adjustment component can be used to adjust the position of the pair of width limiting components in the width direction of the conveying channel, thereby increasing the spacing between the pair of width limiting components in the conveying channel to adapt to the packaging box of the corresponding volume. The adjustment is simple and convenient, and can be performed quickly, with high adjustment efficiency and reduced downtime.

[0024] The embodiments of this application also disclose a box sealing device. The width adjustment component includes a pair of first adjustment mechanisms respectively disposed on both sides of a pair of width limiting components on the device frame. The first adjustment mechanism located on each side in the width direction is respectively connected to the width limiting component on the corresponding side. The first adjustment mechanism is used to adjust the position of the width limiting component.

[0025] Each first adjustment mechanism includes a first adjustment component movably disposed along the width direction of the conveying channel, and a first drive component for driving the first adjustment component to move and adjust along the width direction. Each width limiting component is drively connected to a corresponding first adjustment component.

[0026] With the above technical solution, each width limiting component is provided with a first adjustment mechanism on one side, which can independently adjust each width limiting component. Each width limiting component is independently controllable and can be adjusted according to specific needs.

[0027] The embodiments of this application also disclose a box sealing device, each first driving component including a first crank and a first screw transmission assembly, and a first adjusting component including an adjusting push rod disposed at the output end of the first screw transmission assembly, the first screw transmission assembly and the adjusting push rod both extending along the width direction.

[0028] The first rocker arm is rotatably mounted on one side of the device frame. The output end of the first rocker arm is connected to the input end of the first screw drive assembly. The output end of the first screw drive assembly can move along the width direction. The first rocker arm drives the input end of the first screw drive assembly to rotate. The input end of the first screw drive assembly drives the output end of the first screw drive assembly to move along the width direction and drives the adjusting push rod to move along the width direction.

[0029] By adopting the above technical solution, setting the drive component as a crank handle results in a simpler structure and lower cost. Furthermore, the crank handle is easy and convenient to operate; operators can adjust the width limiting components by manually cranking the first crank handle. Further, a first helical transmission component converts the rotational motion of the first crank handle into linear motion. By controlling the rotation angle of the first crank handle, the movement distance of the adjusting push rod along the width direction of the conveying channel can be precisely controlled, thereby accurately adjusting each width limiting component.

[0030] More preferably, the first helical transmission assembly includes a ball screw extending in the width direction and a screw nut threaded onto the ball screw; wherein, the input end of the ball screw is fixedly connected to the output end of the first rocker handle, and one end of the adjusting push rod is fixedly connected to the screw nut, and the other end is fixedly connected to a corresponding width limiting assembly on the side away from the conveying channel.

[0031] By adopting the above technical solution, the first screw transmission component is set as a ball screw and screw nut, which results in higher transmission efficiency and accuracy, and the screw nut operates more smoothly and reliably.

[0032] The embodiments of this application also disclose a box sealing device, wherein the width adjustment component includes a driving member and a synchronous adjustment mechanism that is pulsatorically connected to the driving member. The synchronous adjustment mechanism extends along the width direction and is pulsatorically connected to a pair of width limiting components.

[0033] The driving component can drive the synchronous adjustment mechanism to move, and cause a pair of width limiting components to move closer or further away from each other in the width direction relative to the conveying channel.

[0034] By adopting the above technical solution, the synchronous adjustment mechanism can synchronously adjust a pair of width limiting components, so that the pair of width limiting components located on both sides of the width direction of the conveying channel can be adjusted by the same distance at the same time. Furthermore, the synchronous adjustment mechanism makes the adjustment process simpler, as only one drive component needs to be controlled to complete the synchronous adjustment of a pair of width limiting components at one time, without the need to operate the two limiting components separately, thus improving the operating efficiency.

[0035] More preferably, the pair of width limiting components also includes a pair of movable bases disposed on the device frame, on both sides of the conveying channel, and movable relative to the device frame in the width direction.

[0036] The driving component includes a driving crank, and the synchronous adjustment mechanism includes an adjusting screw extending along the width direction of the conveying channel. The adjusting screw has threaded grooves with opposite helical directions on both sides in the width direction. A pair of movable bases are threadedly sleeved on both sides of the adjusting screw in the width direction.

[0037] The drive handle drives the adjusting screw to rotate, which in turn causes a pair of movable bases to move closer or further apart in the width direction.

[0038] The above technical solution features a simple and convenient drive crank structure. The adjusting screw has threaded grooves with opposite spiral directions on both sides in the width direction. When the drive crank drives the adjusting screw to rotate, due to the interaction of the threads, a pair of movable bases threaded onto the threaded grooves on both sides will move synchronously in opposite directions. This adjusts the pair of movable bases of the pair of width limiting components to move closer or further apart. With this structure, the packaging box can always be in the center position in the conveying channel, further improving the accuracy and stability of sealing.

[0039] The embodiments of this application also disclose a box sealing device, each width limiting component including a limiting plate extending along the length direction of the conveying channel, and a plurality of rotating guides are provided on the side of the limiting plate facing the conveying channel. The plurality of rotating guides are evenly and spaced along the conveying direction of the conveying channel, and each rotating guide rotates around the height direction of the box.

[0040] More preferably, each limiting plate is also provided with a guide portion at its upstream end in the conveying direction, and the guide portion extends outward at an inclination relative to the conveying direction.

[0041] Using the above technical solution, the limiting plate restricts the packaging box, and multiple rotating guide components can assist in guiding or conveying the packaging box, reducing frictional resistance during conveying and preventing the packaging box from jamming or deflecting during transport. The guiding part extends outward at an angle relative to the conveying direction, forming a guiding structure with a wider inlet, which can smoothly guide the packaging box into the conveying channel of the limiting plate.

[0042] The embodiments of this application also disclose a box sealing device, wherein a sealing adjustment mechanism is provided on one side of each second sealing assembly.

[0043] Each capping adjustment mechanism is located on a corresponding side of the device frame along the height direction of the conveying channel. Each capping adjustment mechanism includes a movable seat that moves along the height direction and a second driving component that drives the movable seat to move and adjust along the height direction. A corresponding second capping assembly is located on the movable seat.

[0044] By adopting the above technical solution, the second sealing component can seal the lid of the packaging box, and the sealing adjustment mechanism can adjust the height of the second sealing component to adapt to packaging boxes of different sizes.

[0045] The embodiments of this application also disclose a box sealing device, wherein the second driving component includes a second crank handle, which is rotatably mounted on the device frame about the width direction.

[0046] The capping adjustment mechanism also includes a transmission assembly disposed between the second crank and the movable seat. The transmission assembly includes a rotating rod disposed at the output end of the second crank, a set of interlocking helical gears connected in transmission, and a second helical transmission assembly. The rotating rod extends along the length of the conveying channel and is disposed on one side of the device frame. The interlocking helical gear set includes a first helical gear and a second helical gear that mesh with each other. The first helical gear is fixedly disposed on the rotating rod. The second helical transmission assembly extends along the height direction. The second helical gear is fixedly disposed at the input end of the second helical transmission assembly. The output end of the second helical transmission assembly is connected to the movable seat.

[0047] The second crank can drive the rotating rod and the first helical gear to rotate, link the second helical gear and the second screw transmission assembly to move, and drive the moving seat to move along the height direction.

[0048] The above technical solution features a simpler and lower-cost second crank structure, which is convenient for manual operation and control. Furthermore, the interlocking helical gear set and the second helical transmission assembly enable the moving seat to move along the height direction, providing advantages such as high transmission accuracy and stable transmission.

[0049] The embodiments of this application also disclose a box sealing device, wherein two sets of intersecting helical gear sets are arranged at intervals on the rotating rod, and a second helical transmission component is provided at the output end of each set of intersecting helical gear sets.

[0050] By adopting the above technical solution, two sets of staggered helical gear sets and two sets of second helical transmission components are set up, which provides better support for the moving seat and makes the moving seat more stable when it moves and adjusts along the height direction.

[0051] In summary, this utility model discloses a box sealing device. A top pressing mechanism is provided at the top of the sealing station of the sealing device. The top pressing mechanism can press the items inside the box so that the top of the items inside the box is lower than or flush with the box opening, preventing the items from peeking out of the box opening and interfering with the box lid after being stacked. After the top pressing mechanism presses the items inside the box, the sealing mechanism pushes the box lid to flip and seal it. The pressing action of the top pressing mechanism and the sealing action of the sealing mechanism work together to further improve the automation level and overall sealing efficiency of the sealing device.

[0052] Furthermore, a limiting unit is installed at the sealing station in the conveyor channel of the sealing device. When the packaging box is conveyed within the channel, the width limiting component prevents it from deflecting, improving the stability of the conveying process. This ensures the packaging box is stably and accurately conveyed to the sealing station, facilitating the sealing operation and preventing sealing failures due to conveying deviation. Additionally, a width adjustment component allows for flexible adjustment of the pair of width limiting components along the width of the conveyor channel. This adjustment controls the spacing between the two components, accommodating packaging boxes of different sizes and ensuring that all boxes are stably and accurately conveyed to the sealing station for sealing. This enhances the versatility and applicability of the sealing device, increases adjustment efficiency, and reduces downtime. Attached Figure Description

[0053] Figure 1 A three-dimensional structural diagram of a box sealing device provided in an embodiment of this utility model;

[0054] Figure 2 A partial structural diagram of the top pressing mechanism of the sealing device for a packaging box provided in an embodiment of this utility model;

[0055] Figure 3 A partial structural schematic diagram of the width limiting component and the width adjusting component of the sealing device for a packaging box provided in an embodiment of this utility model;

[0056] Figure 4 Another structural schematic diagram of the width limiting component and width adjusting component of the sealing device for the packaging box provided in this embodiment of the utility model;

[0057] Figure 5 A partial structural schematic diagram of the second sealing assembly and sealing adjustment mechanism of the packaging box sealing device provided in this embodiment of the utility model;

[0058] Figure 6 A partial structural schematic diagram of the first sealing assembly of the packaging box sealing device provided in an embodiment of the present utility model.

[0059] Explanation of reference numerals in the attached figures:

[0060] 10. Equipment frame; 100. Conveying channel;

[0061] 200. Limiting unit;

[0062] 210. Width limiting component; 211. Limiting plate; 212. Rotation guide; 213. Guide part;

[0063] 220. Width adjustment assembly; 221. First crank handle; 222. First screw drive assembly; 223. Adjustment push rod;

[0064] 300. Sealing mechanism;

[0065] 310. Second capping assembly; 311. Second lateral drive unit; 312. Second capping component;

[0066] 320. First capping assembly; 321. First capping component; 322. First lateral drive unit; 323. Output end of the first vertical drive unit;

[0067] 400. Cap adjustment mechanism;

[0068] 410. Movable base; 420. Second crank handle; 430. Rotating rod; 440. Interlocking helical gear set; 441. First helical gear; 442. Second helical gear; 450. Second screw drive assembly;

[0069] 500. Top pressing mechanism;

[0070] 510. Pressing drive component; 520. Pressing component; 521. Pressing plate; 522. Stop bar; 523. Transmission connecting rod;

[0071] 600. Conveying mechanism;

[0072] A. Width direction of the conveying channel. Detailed Implementation

[0073] As mentioned in the background section, after a packaging box is filled with goods, it needs to be sealed by a sealing device before storage or transportation. However, after some items are stacked and put into the packaging box, there may be gaps between multiple items that protrude from the opening of the packaging box. This can interfere with the lid of the packaging box during sealing, making it impossible for the lid to be folded open and sealed smoothly. Taking packaging bags as an example, multiple packaging bags stacked together can easily protrude from the opening of the packaging box. Therefore, manual pressing is required to compress the packaging bags inside the packaging box before sealing, resulting in low sealing efficiency.

[0074] Therefore, this application provides a box sealing device. A top pressing mechanism is installed at the top of the sealing station of the sealing device. When the box is conveyed to the sealing station, the pressing component of the top pressing mechanism moves along the height direction of the conveyor channel into the box and presses down on the contents. After pressing down on the contents, the sealing mechanism pushes the lid of the box to flip and seal it. No manual pressing of the packaging bag is required, and the top pressing mechanism and the sealing mechanism work together to achieve higher sealing efficiency.

[0075] It should be noted that there are no restrictions on the items stacked inside the packaging box. For example, they can be sheet-like items such as non-woven fabric sheets, towels, envelopes, and packaging bags. In this embodiment, packaging bags are used as an example to illustrate the process.

[0076] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0077] This embodiment discloses a box sealing device for packaging boxes. Please refer to [link / reference]. Figure 1 The sealing device includes a frame 10 with a conveyor channel 100 for transporting packaging boxes. The conveyor channel 100 includes a sealing station. The sealing device includes a limiting unit 200, a sealing mechanism 300, and a top pressing mechanism 500. The limiting unit 200 limits the packaging box at the sealing station. The top pressing mechanism 500 is located above the conveyor channel 100 at the sealing station and can press the packaging bag inside the packaging box. The sealing mechanism 300 seals the lid of the packaging box located at the sealing station.

[0078] Specifically, in this embodiment, the conveying channel 100 is arranged in a horizontal direction. Figure 1 The conveying direction of the middle conveyor channel 100 is perpendicular to the paper surface, and the width direction of the conveyor channel 100 is the same as the width direction of the device frame 10. The width direction of the conveyor channel 100 is as follows: Figure 1 As shown in direction A, the height direction of the conveying channel 100 is the same as the height direction of the device frame 10. The packaging box is conveyed in the conveying channel 100 by the conveying mechanism 600. The conveying mechanism 600 is fixed to the bottom of the device frame 10 by the bracket. The conveying direction of the conveying mechanism 600 is consistent with the extension direction of the conveying channel 100.

[0079] Please see Figure 1 and Figure 2 The top pressing mechanism 500 includes a pressing drive component 510 and a pressing component 520. The pressing drive component 510 is fixedly mounted on the device frame 10, and the pressing component 520 is located at the output end of the pressing drive component 510 and can move along the height direction of the conveying channel 100. The pressing component 520 includes a pressing member that can move along the height direction. After the pressing member enters the packaging box at the sealing station and presses down the packaging bag inside the box, the sealing mechanism 300 pushes the lid of the packaging box to flip and seal it.

[0080] Specifically, in this embodiment, the specific structures of the pressing drive component 510 and the pressing component 520 are not limited. For example, the pressing drive component 510 can be a drive cylinder, a telescopic rod, or other linear drive component, provided that the output end can reciprocate along the height direction of the conveying channel 100 in a linear motion, and that the pressing component 520 can also reciprocate along the height direction of the conveying channel 100, extending into the packaging box to press and tighten the packaging bag. The pressing component 520 is preferably configured as a plate-like structure, with a larger contact area with the packaging bag inside the packaging box and a larger pressing area, so as to better press the packaging bag.

[0081] It should be noted that, in this embodiment, after the packaging box is transported to the sealing station, the top pressing mechanism 500 is activated first, and the pressing drive component 510 drives the pressing component 520 to move downward along the height direction of the conveying channel 100. Then, it contacts the packaging bag inside the packaging box and continuously presses the packaging bag so that the top surface of the packaging bag is flush with or lower than the opening of the packaging box. Then, the sealing mechanism 300 pushes the lid of the packaging box to flip and seal it.

[0082] In this embodiment, the specific structure and setting of the sealing mechanism 300 are not limited, as long as it can seal the lid. For example, the sealing mechanism 300 can be a movable sealing structure, such as a movable push plate, or a swing sealing structure, such as a swing rod or a swing plate, to seal the box.

[0083] For example, the sealing mechanism 300 can be a movable push plate located above the sealing station within the conveyor channel 100. The movable push plate pushes the lid of the packaging box toward the box opening and then seals the packaging box. For example, when it is set as a swing-type sealing structure, the swing end of the swing plate contacts the lid of the packaging box, pushes the lid toward the box opening, and then seals the packaging box.

[0084] More specifically, in this embodiment, the specific structure and arrangement of the conveying mechanism 600 for conveying packaging boxes are not limited. The conveying mechanism 600 can be a conveyor belt, a conveyor roller, etc. For example, when it is set as a conveyor belt, the conveyor belt is located at the bottom of the conveying channel 100 and extends along the conveying direction. For example, when it is set as a conveyor roller, multiple conveyor rollers are evenly and intermittently arranged at the bottom of the conveying channel 100 and extend along the conveying direction, so that the packaging boxes can be smoothly conveyed to the sealing station in the conveying channel 100 and continue to be conveyed after the boxes are sealed at the sealing station.

[0085] Please continue reading Figure 1 The limiting unit 200 includes a pair of width limiting components 210 located on both sides of the sealing station in the width direction of the conveying channel 100. The pair of width limiting components 210 extend along the length direction of the conveying channel 100 and are disposed on the device frame 10, located below the lid of the packaging box in the height direction of the packaging box. Furthermore, the two sides of the pair of width limiting components 210 that are opposite to each other in the width direction are in contact with the corresponding two side walls of the packaging box located at the sealing station.

[0086] Specifically, in this embodiment, a pair of width limiting components 210 are located below the lid of the packaging box in the height direction. The width limiting components 210 limit the box body located below the lid, preventing interference with the sealing mechanism 300 and the top pressing mechanism 500 above the conveying channel 100. Preferably, the length of the pair of width limiting components 210 within the conveying channel 100 is set to be greater than the length of the packaging box. The width limiting components 210 restrict the packaging box, preventing it from deflecting within the conveying channel 100, thus improving the stability of the packaging box during transport. The packaging box can be stably and accurately transported to the sealing station, facilitating the sealing operation of the sealing mechanism 300.

[0087] In this embodiment, the two opposite sides of a pair of width limiting components 210 in the width direction are fitted to the corresponding side walls of the packaging box located at the sealing station to improve the stability of the packaging box in the channel and prevent the packaging box from deflecting in the channel. In some embodiments, the width limiting component 210 can also be set to be slightly larger than the width of the packaging box in the width direction, for example, the width limiting component 210 is slightly larger than the width of the packaging box by 10mm, 20mm, etc., so that there is a certain space between the packaging box and the width limiting component 210 in the conveying channel 100, but the packaging box will not deflect significantly in the conveying channel 100, and the packaging box can be stably conveyed to the sealing station for sealing.

[0088] With this structural design, after the packaging box is conveyed to the sealing station in the conveyor channel 100, the top pressing mechanism 500 can press the packaging bags inside the packaging box to compress the multiple stacked packaging bags inside the packaging box, so that the top of the packaging bags inside the packaging box is lower than or flush with the box opening. This solves the problem of the packaging bags protruding from the box opening and interfering with the sealing of the packaging box after stacking. There is no need to manually press the packaging bags, reducing manual operation. After the packaging bags inside the packaging box are compressed, the sealing mechanism 300 pushes the lid of the packaging box to flip and seal it. The pressing action of the top pressing mechanism 500 and the sealing action of the sealing mechanism 300 work together to further improve the automation level and overall sealing efficiency of the sealing device.

[0089] Furthermore, a pair of width limiting components 210 located on both sides of the sealing station in the width direction of the conveying channel 100 can prevent the packaging box from shifting or shaking during the pressing and sealing process, so as to ensure that the packaging box is stably conveyed to the sealing station, and to ensure that the pressing component is aligned with the packaging bag inside the packaging box to press it, and the sealing mechanism 300 accurately acts on the lid to seal the box, thereby improving the sealing quality.

[0090] Next, the specific structure of the top pressing mechanism 500 in the box sealing device disclosed in this embodiment will be explained in more detail:

[0091] Please see Figure 2The top pressing mechanism 500 includes a pressing drive component 510 and a pressing component 520. The pressing drive component 510 is fixedly mounted on the device frame 10, and the pressing component 520 is located at the output end of the pressing drive component 510 and can move along the height direction of the conveying channel 100. In this embodiment, the pressing drive component 510 is preferably configured as a pressing drive cylinder, which is located at the top of the device frame 10. The output end of the pressing drive cylinder is a piston rod, and the pressing component 520 is located at the end of the piston rod. The pressing component 520 includes a pressing member and a pair of stop members respectively located on both sides of the pressing member. The pair of stop members are located on both sides of the pressing member along the width direction of the conveying channel 100.

[0092] See further Figure 2 The pressing component includes a pressing plate 521 disposed at the output end of the pressing drive component 510, and a pair of stop components configured as a pair of stop rods 522. The pair of stop rods 522 are spaced apart on both sides of the pressing plate 521 along the width direction of the conveying channel 100 and are respectively connected to the output end for transmission. The pressing plate 521 and the stop rods 522 can move separately along the height direction. In this embodiment, the pressing plate 521 and the stop rods 522 can be designed to be driven by separate drive components. Therefore, the pressing plate 521 and the stop rods 522 can move downward synchronously to press, and when they move upward to reset after pressing, the pressing plate 521 and the stop rods 522 can move separately.

[0093] Specifically, in this embodiment, each stop bar 522 extends in the same direction as the conveying direction of the conveying channel 100. A transmission link 523 is also provided above each stop bar 522. Each stop bar 522 is connected to the output end via the transmission link 523. The transmission link 523 can be configured as a multi-link structure. This structure allows the stop bar 522 to have a certain degree of freedom, facilitating its removal from the packaging box and upward repositioning. Furthermore, the transmission link 523 can also adjust the distance between a pair of stop bars 522 in the width direction of the conveying channel 100. For example, see [reference needed]. Figure 2 An adjustment hole is provided on one of the transmission links 523. When the transmission link 523 is connected to different adjustment holes, the spacing between a pair of stop rods 522 in the width direction of the conveying channel 100 can be adjusted.

[0094] More specifically, the fact that the pressing plate 521 and the stop bar 522 can move along the height direction means that the pressing plate 521 can move along the height direction and the stop bar 522 can also move along the height direction, and they can move independently of each other without interference. With this structural design, when the pressing plate 521 and the stop bar 522 move downwards along the height direction and press the packaging bag inside the packaging box to tighten it and make it lower than the opening of the packaging box, the pressing plate 521 will first move upwards and exit into the packaging box to facilitate the two covers on both sides of the packaging box in the conveying direction to flip and seal first. At this time, the stop bar 522 will press down on the packaging bag inside the packaging box to prevent the compressed packaging bag from rebounding. Because the stop bar 522 is set along the length direction of the conveying direction and is a rod-shaped structure, the stop bar 522 will not affect the sealing of the two covers on both sides of the packaging box in the conveying direction. Furthermore, a pair of stop bars 522 are spaced apart along the width direction of the conveying channel 100. After the two covers on both sides of the conveying direction seal the opening of the box, the pair of stop bars 522 can detach from the two covers and move upwards to reset.

[0095] In other words, with this structural design in this embodiment, when sealing the box, the packaging bag inside the box can be pressed first by the pressing plate 521 and a pair of stop bars 522. Then, the pressing plate 521 moves upward and resets, and the pair of stop bars 522 continue to stop and press the packaging bag. Then, the two covers of the packaging box in the conveying direction are flipped and sealed. Then, the pair of stop bars 522 moves upward and resets again, ensuring that the packaging bag inside the box is pressed and will not affect the sealing action of the sealing mechanism 300.

[0096] With the above-described structural design, when the pressing drive component 510 drives the pressing component 520 to move downwards and press the packaging bag inside the packaging box, the pressing plate 521 and a pair of stop components can work together to press the packaging bag inside the packaging box, resulting in a better pressing effect. The pressing component is set on the pressing plate 521, which has a large contact surface on the side facing the packaging bag inside the packaging box, thus making the pressing of the packaging bag inside the packaging box more stable. A pair of stop bars 522 are set on both sides of the pressing plate 521. When the pressing plate 521 moves upwards and is withdrawn, the pair of stop bars 522 can stop the packaging bag inside the packaging box to prevent the packaging bag inside the packaging box from rebounding and avoid interference with the lid when sealing the box.

[0097] Next, the specific structure of the sealing mechanism 300 in the packaging box sealing device disclosed in this embodiment will be explained in more detail:

[0098] Please see Figure 1 , Figure 5 as well as Figure 6The sealing mechanism 300 includes a pair of first sealing assemblies 320 and a pair of second sealing assemblies 310. The pair of first sealing assemblies 320 are located on both sides of the top pressing mechanism 500 in the length direction of the conveying channel 100, and the pair of second sealing assemblies 310 are respectively installed on both sides of the sealing station in the width direction.

[0099] Each first capping assembly 320 is mounted on the top of the device frame 10 and includes a first capping member 321 movable along the height and conveying direction of the conveying channel 100. A pair of first capping members 321 can move synchronously along the conveying direction. Each second capping assembly 310 is mounted on the device frame 10 and includes a second capping member 312 movable along the width direction of the conveying channel 100. A pair of second capping members 312 can move synchronously along the width direction.

[0100] It should be noted that, in this embodiment, the synchronous movement of a pair of first sealing members 321 along the conveying direction means that the pair of first sealing members 321 can move synchronously towards or away from each other along the conveying direction, and the synchronous movement of a pair of second sealing members 312 along the width direction means that the pair of second sealing members 312 can move synchronously towards or away from each other along the width direction.

[0101] Please see Figure 6 Each first capping assembly 320 further includes a first vertical drive unit and a first horizontal drive unit 322, wherein the first horizontal drive unit 322 is disposed at the output end 323 of the first vertical drive unit, and the first capping member 321 is disposed at the output end of the first horizontal drive unit 322; wherein the first vertical drive unit can drive the first horizontal drive unit 322 and the first capping member 321 to move along the height direction, and the first horizontal drive unit 322 can drive the first capping member 321 to move along the conveying direction.

[0102] Please see Figure 5 Each second capping assembly 310 also includes a second lateral drive unit 311, and a second capping member 312 is disposed at the output end of the second lateral drive unit 311 and can move along the width direction.

[0103] Specifically, in this embodiment, the specific structures of the first vertical drive unit, the first horizontal drive unit 322, and the second horizontal drive unit 311 are not limited. For example, they can be configured as linear drive elements such as drive cylinders, hydraulic cylinders, telescopic rods, and linear motors. Preferably, in this embodiment, the first vertical drive unit, the first horizontal drive unit 322, and the second horizontal drive unit 311 are all drive cylinders. The output end 323 of the first vertical drive unit is set along the height direction, and the first horizontal drive unit 322 is fixedly set at the output end 323 of the first vertical drive unit. The output end of the first horizontal drive unit 322 faces the conveying direction of the conveying channel 100.

[0104] Furthermore, in this embodiment, the specific structure of the first sealing member 321 and the second sealing member 312 is not limited, but in this embodiment, they are preferably set as push plates.

[0105] Therefore, with the above-described structural design, a pair of first sealing members 321 provided on a pair of first sealing assemblies 320 are located on both sides of the sealing station along the conveying direction of the conveying channel 100, and the pair of first sealing members 321 can move towards the packaging box in opposite directions along the conveying direction to seal the pair of lids of the packaging box in the conveying direction. A pair of second sealing members 312 provided on a pair of second sealing assemblies 310 are located on both sides of the sealing station along the width direction of the conveying channel 100, and the pair of second sealing members 312 can move towards the packaging box in opposite directions along the width direction to seal the pair of lids of the packaging box in the width direction.

[0106] When the packaging box is conveyed along the conveyor channel 100 to the sealing station and is located below the top pressing mechanism 500, the pressing plate 521 and a pair of stop members move vertically into the packaging box and press the packaging bag inside the packaging box. The pressing plate 521 moves vertically upward and exits the packaging box, and a pair of first sealing members 321 move vertically downward and move towards each other in the conveying direction, pushing the first box covers on both sides of the packaging box in the conveying direction to flip to the first sealing state. A pair of stop bars 522 move vertically upward and exit the packaging box, and a pair of second sealing members 312 move towards each other in the width direction, respectively pushing the second box covers on both sides of the packaging box in the width direction to flip to the second sealing state.

[0107] With this structural design, the first vertical drive unit and the first horizontal drive unit 322 cooperate to drive the first sealing member 321 to move along the height direction and the conveying direction of the conveying channel 100, which can realize the sealing of the lids of the packaging box on both sides of the conveying direction. A pair of second horizontal drive units 311 can drive a pair of second sealing members 312 to move synchronously along the width direction, which can realize the sealing of the lids of the packaging box in different directions, making the sealing action of the sealing mechanism 300 smoother and improving the sealing efficiency.

[0108] Finally, the sealing process of the packaging box sealing device disclosed in this embodiment will be described in detail:

[0109] First, after the packaging bag is placed inside the packaging box, it is transported to the sealing station by the conveying mechanism 600. When the packaging box is transported to the sealing station, the packaging box is located directly below the top pressing mechanism 500, and the pair of covers of the packaging box in the conveying direction of the conveying channel 100 are located between a pair of first sealing assemblies 320, and the pair of covers of the packaging box in the width direction of the conveying channel 100 are located between a pair of second sealing assemblies 310.

[0110] Next, the pressing plate 521 and a pair of stop bars 522 of the top pressing mechanism 500 move downward along the height direction into the packaging box and press the packaging bag inside the packaging box so that the height of the topmost packaging bag inside the packaging box is level with or lower than the opening of the packaging box. Then, the pressing plate 521 moves upward along the height direction to exit the packaging box. At this time, the pair of stop bars 522 will continue to press the packaging bag inside the packaging box to prevent the pressed packaging bag from rebounding.

[0111] Then, a pair of first sealing components 320 start to operate. The first vertical drive unit drives the first horizontal drive unit 322 and the first sealing component 321 to move along the height direction. The first horizontal drive unit 322 can drive the first sealing component 321 to move along the conveying direction, so that the pair of first sealing components 321 can move towards the packaging box in opposite directions along the conveying direction, and flip and seal the two caps located in the conveying direction of the conveying channel 100. At this time, a pair of stop bars 522 move upward and reset.

[0112] Finally, a pair of second sealing assemblies 310 begin to operate for secondary sealing. A pair of second lateral drive units 311 drive a pair of second sealing members 312 to move towards the packaging box in opposite directions along the width direction, flipping and sealing the two caps located in the width direction of the conveying channel 100, and covering the two already sealed caps. After the caps of the packaging box are finally sealed, the conveying continues, and the boxes are sealed and bonded with tape.

[0113] Further, please see Figure 1 and Figure 4 The limiting unit 200 also includes a width adjustment component 220, which is mounted on the device frame 10. The width adjustment component 220 is connected to a pair of width limiting components 210, and can drive the pair of width limiting components 210 to move relative to the conveying channel 100 in the width direction. This allows for flexible adjustment of the pair of width limiting components 210 in the width direction of the conveying channel 100, thereby adjusting the spacing between the pair of width limiting components 210 in the width direction of the conveying channel 100. This can accommodate packaging boxes of different sizes and ensure that different sizes of boxes can be accommodated. Small packaging boxes can be stably and accurately transported to the sealing station for sealing, improving the versatility and application range of the sealing device. For example, when the packaging box to be sealed is changed from a smaller packaging box to a larger packaging box, the width adjustment component 220 adjusts the position of a pair of width limiting components 210 in the width direction of the conveying channel 100, thereby increasing the width dimension of the pair of width limiting components 210 in the conveying channel 100 to adapt to the packaging box of the corresponding size. The adjustment is simple and convenient, and can be made quickly, with high adjustment efficiency and reduced downtime.

[0114] Specifically, in this embodiment, the width adjustment component 220 can be configured with various movable and adjustable structures. For example, the width adjustment component 220 can be a telescopic cylinder, a transmission screw, a gear rack, or other mechanisms, which can drive a pair of width limiting components 210 to adjust their positions in the width direction of the conveying channel 100. Furthermore, the pair of width limiting components 210 can be configured to be adjusted separately or synchronously. This will be described in detail below and will not be repeated here.

[0115] For example, when configured as a telescopic cylinder, two telescopic cylinders can be provided, and the output ends of the two telescopic cylinders can respectively drive a pair of width limiting components 210 to adjust in the width direction. For example, when configured as a transmission screw, gear rack, or other mechanism, a drive motor is also provided. The transmission screw or gear rack converts the rotational motion output by the drive motor into linear motion, thereby controlling the pair of width limiting components 210 to adjust in the width direction.

[0116] Next, we will explain in detail using the example of a pair of width limiting components 210 being individually controlled and adjusted by the width adjusting component 220:

[0117] Please see Figure 1 as well as Figure 3The width adjustment assembly 220 includes a pair of first adjustment mechanisms respectively disposed on both sides of a pair of width limiting assemblies 210 on the device frame 10. The first adjustment mechanism located on each side in the width direction is respectively connected to the width limiting assembly 210 on the corresponding side. Each first adjustment mechanism is located on the side of the width limiting assembly 210 away from the conveying channel 100 in the width direction.

[0118] Each first adjustment mechanism includes a first driving component and a first adjustment component. The first adjustment component is movably disposed along the width direction of the conveying channel 100. The first driving component drives the first adjustment component to move and adjust along the width direction. Each width limiting component 210 is connected to a corresponding first adjustment component. Each width limiting component 210 has a first adjustment mechanism on one side, which allows each width limiting component 210 to be adjusted independently, resulting in higher adjustment accuracy.

[0119] In one embodiment, the first driving component can be configured as a linear driving unit, such as a linear motor or a driving cylinder, and the first adjusting component is also configured as a linear adjusting unit, such as a telescopic rod or a piston rod. The linear driving unit can drive the linear adjusting unit to move back and forth along the width direction, thereby adjusting the position of each width limiting component 210.

[0120] In another embodiment, the first driving component can be configured as a rotary driving unit, such as a servo motor, a rotary rocker arm, etc. The output shaft of the servo motor or the rotary rocker arm is a rotary motion. The first adjusting component can be configured as a gear and rack mechanism, a screw transmission mechanism, etc., which can convert the rotary motion into linear motion, thereby adjusting the position of each width limiting component 210. Those skilled in the art can design or select according to actual needs, and this embodiment does not make specific limitations in this regard.

[0121] Further, please see Figure 3 In this embodiment, each first driving component includes a first rocker arm 221 and a first helical transmission assembly 222, and the first adjusting component includes an adjusting push rod 223 disposed at the output end of the first helical transmission assembly 222. Both the first helical transmission assembly 222 and the adjusting push rod 223 extend along the width direction.

[0122] The first rocker arm 221 is rotatably mounted on one side of the device frame 10. The output end of the first rocker arm 221 is connected to the input end of the first screw drive assembly 222. The output end of the first screw drive assembly 222 can move along the width direction. The first rocker arm 221 drives the input end of the first screw drive assembly 222 to rotate. The input end of the first screw drive assembly 222 drives the output end of the first screw drive assembly 222 to move along the width direction and drives the adjusting push rod 223 to move along the width direction.

[0123] It should be noted that when the first rocker 221 is set, the first rocker 221 rotates and provides rotational power. The first rocker 221 can be driven to rotate manually by the operator, or it can be driven to rotate by a belt, gear or other transmission mechanism. Preferably, in this embodiment, the first rocker 221 is driven to rotate manually by the operator, which makes the structure simpler and the cost lower.

[0124] This design, with the drive component set as the first crank handle 221 and operated by an operator, results in a simpler and lower-cost structure. Operation is also simple and convenient; the operator can adjust the width limiting component 210 by manually cranking the first crank handle 221. Furthermore, a first screw drive component 222 converts the rotational motion of the first crank handle 221 into linear motion. By controlling the rotation angle of the first crank handle 221, the movement distance of the adjusting push rod 223 along the width direction of the conveying channel 100 can be precisely controlled, thereby accurately adjusting each width limiting component 210.

[0125] In one embodiment, the first helical transmission assembly 222 can be configured as a transmission screw (not shown in the figure) and a slidable nut (not shown in the figure) threadedly connected to the transmission screw. For example, the transmission screw and the first rocker 221 are fixedly connected. When the first rocker 221 rotates, it drives the transmission screw to rotate. The rotation of the transmission screw drives the nut to slide along the transmission screw, thereby driving the adjusting push rod 223 to adjust in the width direction.

[0126] In another embodiment, the first helical drive assembly 222 includes a ball screw (not shown in the figure) extending in the width direction and a screw nut (not shown in the figure) threaded onto the ball screw; wherein, the input end of the ball screw is fixedly connected to the output end of the first rocker 221, and one end of the adjusting push rod 223 is fixedly connected to the screw nut, and the other end is fixedly connected to a corresponding width limiting assembly 210 on the side away from the conveying channel 100.

[0127] This structural design, which sets the first helical transmission component 222 as a ball screw and screw nut, results in higher transmission efficiency and accuracy, and smoother and more reliable operation of the screw nut.

[0128] Next, we will take the example of a pair of width limiting components 210 being synchronously controlled and adjusted by a synchronous adjustment mechanism for a detailed explanation:

[0129] The width adjustment assembly 220 includes a drive member and a synchronous adjustment mechanism (not shown in the figure) that is driven to the drive member. The synchronous adjustment mechanism extends along the width direction and is driven to a pair of width limiting assemblies 210.

[0130] The driving component can drive the synchronous adjustment mechanism to move, and cause a pair of width limiting components 210 to move synchronously closer to or further away from each other in the width direction relative to the conveying channel 100.

[0131] The synchronization adjustment mechanism can be configured as a timing belt mechanism, a timing screw mechanism, a timing screw mechanism, etc. For example, when the synchronization adjustment mechanism is configured as a timing belt, the timing belt is wound around a pair of timing pulleys, and the motor can drive one of the timing pulleys to rotate. A pair of width limiting components 210 are fixedly connected to both sides of the timing belt. When the motor drives the timing belt to move, it drives the pair of width limiting components 210 to move closer to each other or further away from each other synchronously.

[0132] For example, when configured as a synchronous lead screw mechanism or a synchronous screw mechanism, two sets of synchronous lead screws or two sets of synchronous screws can be set. A pair of width limiting components 210 are respectively connected to the two sets of synchronous lead screws or two sets of synchronous screws. Then, the two sets of synchronous lead screws or synchronous screws are synchronously controlled through a coupling. Alternatively, one set of synchronous lead screws or one set of synchronous screws can be set, and two sets of helical lines with different helical directions can be set on the one set of synchronous lead screws or one set of synchronous screws to control the pair of width limiting components 210 to synchronously move closer to each other or further away from each other.

[0133] With this structural design, the synchronous adjustment mechanism can simultaneously adjust a pair of width limiting components 210, so that the pair of width limiting components 210 located on both sides of the width direction of the conveying channel 100 can be adjusted by the same distance at the same time. Furthermore, the synchronous adjustment mechanism makes the adjustment process simpler, as only one drive component needs to be controlled to complete the synchronous adjustment of a pair of width limiting components 210 at once, without the need to operate the two limiting components separately, thus improving the operating efficiency.

[0134] Furthermore, this embodiment takes a set of synchronous adjusting screws as an example for detailed description of the synchronous adjusting mechanism. The driving component includes a driving crank, which can be manually operated by an operator to rotate, or driven by a belt, gear, or other transmission mechanism to rotate. The synchronous adjusting mechanism includes adjusting screws extending along the width direction of the conveying channel 100. The adjusting screws are provided with threaded grooves with opposite helical directions on both sides in the width direction. The pair of width limiting components 210 also include a pair of movable bases disposed on the device frame 10, on both sides of the conveying channel 100, and movable relative to the device frame 10 in the width direction. The pair of movable bases are respectively threadedly sleeved on both sides of the adjusting screws in the width direction through threaded grooves.

[0135] When the operator drives the crank handle to rotate, the crank handle drives the adjusting screw to rotate. The threaded grooves with opposite helical directions on the adjusting screw can drive a pair of movable bases to move closer or further apart synchronously in the width direction.

[0136] This design features a simple and convenient drive crank mechanism. The adjusting screw has oppositely oriented threaded grooves on both sides of the width direction. When the drive crank rotates the adjusting screw, the opposing threads cause a pair of movable bases, which are threaded onto the threaded grooves on both sides, to move synchronously in opposite directions. This adjusts the movable bases of the pair of width limiting components 210 to move closer or further apart, ensuring that the packaging box remains centered in the conveyor channel 100. This avoids problems such as packaging box offset and tilting caused by asynchronous limiting on both sides, further improving the accuracy and stability of sealing.

[0137] Next, the width limiting component 210 of the box sealing device disclosed in this application will be explained in more detail:

[0138] Please see Figure 3 and Figure 4 Each width limiting component 210 includes a limiting plate 211 extending along the length direction of the conveying channel 100. Multiple rotating guides 212 are also provided on the side of the limiting plate 211 facing the conveying channel 100. The multiple rotating guides 212 are evenly and spaced along the conveying direction of the conveying channel 100, and each rotating guide 212 rotates about the height direction of the packaging box. The rotating guides 212 are rotatably connected to the limiting plate 211 via rotating shafts arranged along the height direction of the packaging box, and both ends of the rotating shafts are fixed to the limiting plate 211 via bearings.

[0139] Specifically, in this embodiment, when the limiting plate 211 extends along the length direction of the conveying channel 100, its length is greater than the length of the packaging box. The specific structure of the rotating guide 212 is not limited and can be set as a rotating roller, rolling bearing, ball, etc. However, the rotation direction of the rotating roller, rolling bearing, etc. must be set to be the same as the conveying direction.

[0140] With this structural design, the limiting plate 211 limits the packaging box, and multiple rotating guides 212 can assist in guiding or conveying the packaging box, which can reduce the frictional resistance during the conveying of the packaging box and prevent the packaging box from getting stuck or deflected during the conveying process.

[0141] More preferably, see Figure 3 and Figure 4 Each limiting plate 211 is also provided with a guide part 213 at the upstream end of the conveying direction, and the guide part 213 extends outward at an inclination relative to the conveying direction.

[0142] In this embodiment, the guide portion 213 is preferably configured as a pair of guide plates, which are respectively disposed upstream of a pair of limiting plates 211. The width of the entrance of the pair of guide plates is greater than the width of the pair of guide plates, so that the guide portion 213 has a trumpet-shaped structure and guides the packaging box smoothly into the conveying channel 100 of the limiting plate 211.

[0143] Next, the sealing mechanism 400 of the sealing device for sealing boxes disclosed in this application will be explained in more detail:

[0144] Please see Figure 1 as well as Figure 5 Each second capping assembly 310 is also provided with a capping adjustment mechanism 400 on one side. Each capping adjustment mechanism 400 is provided on a corresponding side of the device frame 10 along the height direction of the conveying channel 100. Each capping adjustment mechanism 400 includes a movable seat 410 that is movable along the height direction, and a second driving component that drives the movable seat 410 to move and adjust along the height direction. A corresponding second capping assembly 310 is provided on the movable seat 410.

[0145] Specifically, in this embodiment, the capping adjustment mechanism 400 is used to adjust the dimensions of the second capping assembly 310 in the height direction. For example, when the packaging box conveyed in the conveying channel 100 is changed from a smaller packaging box to a larger packaging box, the height of the lid of the packaging box is higher. At this time, it is necessary to adjust the height of the second capping assembly 310 to avoid interference between the second capping assembly 310 and the box body during the capping process due to the second capping assembly 310 being too low. By adjusting the height of the second capping assembly 310, it can be adapted to packaging boxes of different sizes.

[0146] Furthermore, the movable seat 410 in this embodiment can be adjusted along the height direction by various movable and adjustable structures. For example, the second driving component can be set as a driving cylinder or a linear motor, and the output end of the driving cylinder or linear motor can drive the movable seat 410 to move along the height direction. Alternatively, the second driving component can be set as a servo motor or a crank, and a worm gear mechanism, rack and pinion mechanism, etc., can be set at the output end of the servo motor or crank to convert the rotational motion of the servo motor or crank into linear motion that drives the movable seat 410 to move. Those skilled in the art can adjust or design according to actual needs, and this embodiment does not impose a unique limitation on this.

[0147] More specifically, in this embodiment, the second driving component includes a second crank 420, which is rotatably mounted on the device frame 10 about its width. Similarly, the second crank 420 can be manually driven by an operator, or it can be driven by a belt, gear, or other transmission mechanism. Preferably, in this embodiment, the second crank 420 is manually driven by an operator, resulting in a simpler structure and lower cost.

[0148] Please see Figure 5 The cap adjustment mechanism 400 also includes a transmission assembly disposed between the second rocker 420 and the movable seat 410. The transmission assembly includes a rotating rod 430 disposed at the output end of the second rocker 420, a cross-shaft helical gear set 440 connected in transmission, and a second helical transmission assembly 450.

[0149] The rotating rod 430 is arranged on one side of the device frame 10 along the length direction of the conveying channel 100. The staggered shaft helical gear set 440 includes a first helical gear 441 and a second helical gear 442 that mesh with each other. The first helical gear 441 is fixedly arranged on the rotating rod 430. The second screw drive assembly 450 extends along the height direction. The second helical gear 442 is fixedly arranged at the input end of the second screw drive assembly 450. The output end of the second screw drive assembly 450 is connected to the moving seat 410. The second screw drive assembly 450 can drive the moving seat 410 to reciprocate along the height direction.

[0150] In this embodiment, the rotating rod 430 extends along the length of the conveying channel 100, and the first helical gear 441 is fixedly mounted on the rotating rod 430. Through the cooperation of the first helical gear 441 and the second helical gear 442, the power transmission path can be switched, switching the rotation of the rotating rod 430 along the length direction to the rotation of the second helical gear 442 along the height direction. When the second helical gear 442 rotates along the height direction and drives the input end of the second screw transmission assembly 450 to rotate along the height direction, the second screw transmission assembly 450 converts the rotation along the height direction into linear movement along the height direction, ultimately driving the moving seat 410 to move along the height direction to adjust the overall height of the second sealing assembly 310.

[0151] Therefore, the second crank 420 can drive the rotating rod 430 and the first helical gear 441 to rotate, and then link the second helical gear 442 and the second screw transmission assembly 450 to move, and finally drive the moving seat 410 to move along the height direction through the second screw transmission assembly 450.

[0152] In this embodiment, one, two, three or even more first helical gears 441 can be arranged along the transmission rod, and this embodiment does not make a specific limitation.

[0153] Furthermore, the staggered helical gear set 440 can also be configured as a bevel gear set, which can achieve switching of transmission paths. The second helical transmission assembly 450 can be configured as a ball screw, transmission screw, etc., and its working principle is the same as that of the first helical transmission assembly 222, which is to convert rotational motion into linear motion. This embodiment will not elaborate further on this.

[0154] More preferably, see Figure 5 Two sets of interleaved helical gear sets 440 are spaced apart on the rotating rod 430, and a second helical transmission assembly 450 is provided at the output end of each set of interleaved helical gear sets 440.

[0155] This structural design, with two sets of staggered helical gear sets 440 and two sets of second helical transmission components 450, provides better support for the movable seat 410 and makes the movable seat 410 move and adjust more smoothly in the height direction.

[0156] Finally, a brief description of the sealing process of the packaging box sealing device disclosed in this application is provided:

[0157] Unsealed boxes are placed on conveyor mechanism 600 and transported to sealing station via conveyor mechanism 600. After the boxes are transported to sealing station, they are located directly below top pressing mechanism 500. In the conveying direction of conveyor channel 100, a pair of lids of the boxes are located between a pair of first sealing assemblies 320, and in the width direction of conveyor channel 100, a pair of lids of the boxes are located between a pair of second sealing assemblies 310.

[0158] Next, the pressing plate 521 and a pair of stop bars 522 of the top pressing mechanism 500 move downward along the height direction into the packaging box and press the packaging bag inside the packaging box so that the height of the topmost packaging bag inside the packaging box is level with or lower than the opening of the packaging box. Then, the pressing plate 521 moves upward along the height direction to exit the packaging box. At this time, the pair of stop bars 522 will continue to press the packaging bag inside the packaging box to prevent the pressed packaging bag from rebounding.

[0159] Then, a pair of first sealing components 320 start to operate. The first vertical drive unit drives the first horizontal drive unit 322 and the first sealing component 321 to move along the height direction. The first horizontal drive unit 322 can drive the first sealing component 321 to move along the conveying direction, so that the pair of first sealing components 321 can move towards the packaging box in opposite directions along the conveying direction, and first flip and seal the two caps located in the conveying direction of the conveying channel 100. Then, a pair of stop bars 522 move upward to reset.

[0160] Finally, a pair of second sealing assemblies 310 begin to seal the boxes. A pair of second lateral drive units 311 drive a pair of second sealing members 312 to move towards the packaging box in opposite directions along the width direction, flipping and sealing the two lids located in the width direction of the conveying channel 100, and covering the two already sealed lids. After the lids of the packaging box are finally sealed, the conveying continues, and the boxes are sealed with tape.

[0161] When the size of the packaging boxes conveyed within the conveyor channel 100 changes, the width adjustment component 220 adjusts the spacing between the pair of width limiting components 210 in the width direction of the conveyor channel 100 to accommodate packaging boxes of different sizes. Furthermore, the capping adjustment mechanism 400 can adjust the height of the second capping component 310 on the device frame 10 to prevent interference between the second capping component 310 and the packaging box during the capping process due to its low height, or to prevent it from being too high to close the box. For example, when the packaging box to be sealed changes from a smaller box to a larger box, the width adjustment component 220 adjusts and increases the spacing between the pair of width limiting components 210 in the width direction of the conveyor channel 100, and the capping adjustment mechanism 400 adjusts and raises the height of the second capping component 310 on the device frame 10 to accommodate the corresponding box size. Those skilled in the art can adjust according to actual needs; this embodiment is not the only possible solution.

[0162] It should be noted that, in addition to the specific embodiments described above, those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model is presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to that embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. In order to provide a deep understanding of this utility model, many specific details are included in the above description, and this utility model may also be implemented without using these details. In addition, in order to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0163] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0164] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the 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. Therefore, they should not be construed as limitations on the utility model.

[0165] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0166] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set up," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0167] Although the present invention has been illustrated and described with reference to certain preferred embodiments, those skilled in the art should understand that the above description is a further detailed explanation of the present invention in conjunction with specific embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. Those skilled in the art can make various changes in form and detail, including some simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. A carton sealing apparatus comprising an apparatus frame, a conveying passage for conveying a carton being provided on the apparatus frame, and a sealing station being provided in the conveying passage, characterized in that, The sealing device comprises: The sealing device further comprises a top pressing mechanism above the sealing station on the conveying channel; wherein The top pressing mechanism comprises a pressing driving part fixedly arranged on the device rack and a pressing part arranged at the output end of the pressing driving part and movable along the height direction of the conveying channel; wherein the pressing part comprises a pressing member movable along the height direction, and after the pressing member enters the packaging box in the sealing station and presses the articles in the packaging box, the sealing mechanism pushes the cover of the packaging box to flip and seal; wherein The limiting unit comprises a pair of width limiting assemblies on both sides of the sealing station in the width direction of the conveying channel, which are arranged on the device rack along the length direction of the conveying channel, below the cover of the packaging box in the height direction of the packaging box, and the two sides of the pair of width limiting assemblies opposite to each other in the width direction are attached to the corresponding two side walls of the packaging box in the sealing station.

2. The apparatus for sealing a package according to claim 1, wherein The pressing part further comprises a pair of stop members arranged on both sides of the pressing member; wherein The pressing member comprises a pressing plate arranged at the output end of the pressing driving part, and the pair of stop members are arranged as a pair of stop rods arranged on both sides of the pressing plate in the width direction of the conveying channel and respectively in transmission connection with the output end; Wherein The pressing plate and the stop rod are respectively movable along the height direction.

3. The apparatus for sealing a package according to claim 2, wherein The sealing mechanism comprises a pair of first cover assemblies on both sides of the top pressing mechanism in the length direction of the conveying channel, and a pair of second cover assemblies respectively installed on both sides of the sealing station in the width direction; and Each of the first cover assemblies is respectively installed on the top of the device rack and comprises a first cover member movable along the height direction and the conveying direction of the conveying channel, and a pair of the first cover members are synchronously movable along the conveying direction; each of the second cover assemblies is respectively installed on the device rack and comprises a second cover member movable along the width direction of the conveying channel, and a pair of the second cover members are synchronously movable along the width direction; wherein The packaging box is conveyed along the conveying channel to the sealing station and is located below the top pressing mechanism. The pressing plate and the pair of stop members move into the packaging box along the height direction and press the articles in the packaging box. The pressing plate moves upward along the height direction and exits the packaging box. A pair of the first cover members moves downward along the height direction and moves towards each other in the conveying direction, pushing the first box covers on both sides of the packaging box in the conveying direction to flip to the first sealing state. The pair of stop rods moves upward along the height direction and exits the packaging box. A pair of the second cover members moves towards each other along the width direction and pushes the second box covers on both sides of the packaging box in the width direction to flip to the second sealing state.

4. The apparatus for sealing a package according to claim 3, wherein Each of the first cover assemblies further comprises a first vertical driving unit and a first horizontal driving unit. The first horizontal driving unit is arranged at the output end of the first vertical driving unit, and the first cover member is arranged at the output end of the first horizontal driving unit. The first vertical driving unit can drive the first horizontal driving unit and the first cover member to move along the height direction, and the first horizontal driving unit can drive the first cover member to move along the conveying direction. Each of the second cover assemblies further comprises a second horizontal driving unit, and the second cover member is arranged at the output end of the second horizontal driving unit and can move along the width direction.

5. The apparatus according to any one of claims 1 to 4, wherein The limiting unit further comprises a width adjusting assembly arranged on the device rack and drivingly connected with the pair of width limiting assemblies and capable of driving the pair of width limiting assemblies to move in the width direction relative to the conveying channel. The width adjusting assembly comprises a pair of first adjusting mechanisms arranged on the device rack on both sides of the pair of width limiting assemblies and drivingly connected with the width limiting assemblies on the corresponding side in the width direction. Each of the first adjusting mechanisms comprises a first adjusting member movably arranged in the width direction of the conveying channel and a first driving member driving the first adjusting member to move and adjust in the width direction. Each of the width limiting assemblies is drivingly connected with a corresponding first adjusting member. Each of the first driving members comprises a first crank handle and a first screw transmission assembly. The first adjusting member comprises an adjusting push rod arranged at the output end of the first screw transmission assembly. The first screw transmission assembly and the adjusting push rod are arranged in extension in the width direction. The first crank handle is rotatably arranged on one side of the device rack in the width direction. The output end of the first crank handle is drivingly connected with the input end of the first screw transmission assembly. The output end of the first screw transmission assembly is movable in the width direction. ​ 6. The apparatus for sealing a package according to claim 5, wherein ​ ​ The first crank drives the input end of the first screw transmission assembly to rotate, and the input end of the first screw transmission assembly drives the output end of the first screw transmission assembly to move along the width direction and drives the adjusting push rod to move along the width direction.

7. The apparatus for sealing a package according to claim 6, wherein The first screw transmission assembly comprises a ball screw extending along the width direction and a screw nut threadedly connected to the ball screw; wherein the input end of the ball screw is fixedly connected to the output end of the first crank; and One end of the adjusting push rod is fixedly connected to the screw nut, and the other end is fixedly connected to the side of the corresponding one of the width limiting assemblies away from the conveying channel.

8. The apparatus for sealing a package according to claim 5, wherein The width adjusting assembly comprises a driving member and a synchronous adjusting mechanism in transmission connection with the driving member, the synchronous adjusting mechanism extends along the width direction, and the synchronous adjusting mechanism is in transmission connection with the pair of width limiting assemblies; Wherein The driving member can drive the synchronous adjusting mechanism to move and drive the pair of width limiting assemblies to synchronously approach or move away from each other relative to the conveying channel in the width direction.

9. The carton sealing apparatus of claim 8 wherein, The pair of width limiting assemblies further comprises a pair of movable bases arranged on the device rack on both sides of the conveying channel and movable relative to the device rack along the width direction; The driving member comprises a driving crank, the synchronous adjusting mechanism comprises an adjusting screw extending along the width direction of the conveying channel, the adjusting screw is provided with thread grooves in opposite screw directions on both sides thereof in the width direction; the pair of movable bases are threadedly connected to both sides of the adjusting screw in the width direction; and The driving crank drives the adjusting screw to rotate and drives the pair of movable bases to synchronously approach or move away from each other in the width direction.

10. The apparatus for sealing a package according to claim 5, wherein Each of the width limiting assemblies comprises a limiting plate extending along the length direction of the conveying channel, and a plurality of rotation guides are further arranged on the side of the limiting plate facing the conveying channel; wherein The plurality of rotation guides are uniformly and spacedly arranged along the conveying direction of the conveying channel, and each of the rotation guides rotates around the height direction of the packaging box.

11. The carton sealing apparatus of claim 10 wherein, Wherein The limiting plate is further provided with a guide portion at the upstream end thereof in the conveying direction, and the guide portion extends outwardly and obliquely relative to the conveying direction.

12. The carton sealing apparatus of claim 11 wherein, Each of the second cover adjusting assemblies is further provided with a cover adjusting mechanism on one side thereof; wherein Each of the cover adjusting mechanisms is arranged on the corresponding side of the device rack along the height direction of the conveying channel; comprising a moving base movably arranged along the height direction, and a second driving component driving the moving base to move and adjust along the height direction, and a corresponding one of the second cover assemblies is arranged on the moving base.

13. The carton sealing apparatus of claim 12 wherein, The second driving component comprises a second crank, and the second crank is rotatably arranged on the device rack about the width direction; and The second crank drives the second cover adjusting mechanism to rotate and drives the corresponding one of the second cover assemblies to move and adjust along the height direction of the conveying channel. The cover adjusting mechanism further comprises a transmission assembly arranged between the second handle and the moving seat, the transmission assembly comprising a rotating rod arranged at the output end of the second handle, a transmission-connected staggered shaft helical gear set, and a second screw transmission assembly; wherein the rotating rod is arranged along the length direction of the conveying channel on one side of the device rack, the staggered shaft helical gear set comprises a first helical gear and a second helical gear in transmission engagement with each other, the first helical gear is fixedly arranged on the rotating rod, the second screw transmission assembly is arranged along the height direction, the second helical gear is fixedly arranged at the input end of the second screw transmission assembly, and the output end of the second screw transmission assembly is connected with the moving seat; wherein The second handle can drive the rotating rod and the first helical gear to rotate, drive the second helical gear and the second screw transmission assembly to move in linkage, and drive the moving seat to move along the height direction.

14. The carton sealing apparatus of claim 13, wherein, The rotating rod is arranged with two groups of staggered shaft helical gear sets at intervals, and the output end of each group of the staggered shaft helical gear sets is arranged with the second screw transmission assembly.

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