Hinge cover type packaging box automatic cover closing device

Abstract

The utility model discloses an automatic cover closing device for a hinge cover type packaging box, and relates to the technical field of product packaging, the automatic cover closing device comprises a first conveyor for feeding a packaging box and a second conveyor for outputting the packaging box, a transfer mechanism for transferring the packaging box is arranged between the first conveyor and the second conveyor, and a box cover buckling mechanism is arranged on the second conveyor. After being boxed, products are conveyed by the first conveyor, and packaging boxes on the first conveyor are transferred to the second conveyor by the transfer mechanism; the packaging box is conveyed on the second conveyor and passes through the box cover buckling mechanism, and buckling of the box cover of the packaging box is completed. Through the transfer device, the box cover of the packaging box can be directly buckled on a production line, the packaging box does not need to be transferred to independent box cover buckling equipment for packaging, the step of transferring the packaging box is optimized, the packaging time is shortened, and the production efficiency is improved.

Description

Technical Field

[0001] This application relates to the technical field of product packaging, and in particular to an automatic lid-closing device for a hinged lid type packaging box. Background Technology

[0002] Currently, for products packaged in cardboard boxes, after the product is placed in the cardboard box, the top cover and the box body need to be fastened together. In order to improve product packaging efficiency, automated equipment is usually used to fasten the top cover and the box body together.

[0003] In the prior art, Chinese utility model patent application CN202010982277.4 discloses an automatic closing device for paper packaging boxes, including a base plate and a processing frame. The front end of the top plate of the processing frame is provided with a movable through groove, and a rotatable and movable top cover plate is provided in the movable through groove. The front end of the top of the top cover plate is provided with a vertical plate. A positioning frame is provided in front of the processing frame. A lifting and lowering pressure plate is provided in the top plate of the positioning frame and is directly opposite the top cover plate. Side limiting blocks are movably provided on both sides of the top plate of the processing frame, and a rear limiting block is movably provided on the rear side of the top surface of the top plate of the processing frame. The positioning frame automatically positions the carton. A rotatable and movable box cover plate is provided at the bottom of the opening end of the packaging box. A lifting and lowering pressure plate is provided directly above the box cover plate. The pressure plate can press the main cover plate on the opening end of the packaging box into a 90° bend. By rotating the box cover plate, the bent main cover plate can be pushed into the opening end of the packaging box, thereby completing the automatic closing.

[0004] While the aforementioned patent document describes an automatic lid-closing device that can automatically close the packaging box lid, it requires transferring the packaging box from the production line to the device before the lid is closed, reducing production efficiency. Therefore, an automatic lid-closing device adapted to the production line is needed. Utility Model Content

[0005] To address the issue of reduced production efficiency caused by the inability to complete the packaging box filling and lid closing on the same production line, this application provides an automatic lid closing device for hinged lid packaging boxes.

[0006] This application provides an automatic lid-closing device for hinged lid packaging boxes, which adopts the following technical solution:

[0007] An automatic lid-closing device for hinged lid packaging boxes includes a first conveyor for feeding the packaging box and a second conveyor for outputting the packaging box. A transfer mechanism for transferring the packaging box is provided between the first conveyor and the second conveyor, and a lid-closing mechanism is provided on the second conveyor.

[0008] The transfer mechanism includes a carrying platform, a first pushing component, and a second pushing component; the carrying platform is disposed between the first conveyor and the second conveyor and connects their conveying planes; the first pushing component is disposed between the first conveyor and the carrying platform and pushes the packaging boxes on the first conveyor toward the carrying platform; the second pushing component is disposed on the carrying platform and pushes the packaging boxes on the carrying platform toward the conveying plane of the second conveyor.

[0009] By adopting the above technical solution, after the product is boxed, it is conveyed by the first conveyor. The packaging box is pushed to the carrying platform by the first pushing component, and then the packaging box is pushed onto the second conveyor by the second pushing component. The packaging box is transported by the second conveyor through the lid fastening mechanism, and the lid of the packaging box is fastened. Through the transfer device, the packaging box can complete the lid fastening directly on the continuous production line, without having to transfer the packaging box to a separate lid fastening device for packaging. This optimizes the step of transferring the packaging box, shortens the packaging time, and improves production efficiency.

[0010] Preferably, the second conveyor is provided in two sets, with the two sets of second conveyors located on both sides of the first conveyor, and the conveying direction of the second conveyor being parallel to the conveying direction of the first conveyor; the bearing platform is provided in two sets corresponding to the second conveyor, with the two bearing platforms located on both sides of the first conveyor, and the feeding ends of the two sets of second conveyors docking with the two bearing platforms respectively; it also includes a frame, which is fixed to the first conveyor and the second conveyor;

[0011] The first pushing component includes a first driving member, a toggle block, and a linear slide rail; the linear slide rail is fixed on the frame and located above the first conveyor, with both ends of the linear slide rail suspended above the bearing platforms on both sides; the toggle block is slidably installed on the linear slide rail, and the first driving member drives the toggle block to slide on the linear slide rail; the toggle block is located on the side of the linear slide rail close to the first conveyor and can move the packaging boxes on the first conveyor.

[0012] By adopting the above technical solution, the setting of two sets of second conveyors not only doubles the work efficiency of the lid closing process, but also, when the first driving component drives the pusher to reciprocate on the linear slide rail, the packaging box is pushed onto the bearing platform on both sides of the first conveyor and then transferred to the two sets of second conveyors. The reciprocating motion of the pusher plays the role of transferring the packaging box, thus improving the transfer efficiency. The frame setting facilitates the installation of other functional components.

[0013] The preferred second pushing component includes a first cylinder, which is parallel to the transport direction of the packaging box, and one end of the first cylinder is fixedly installed on the side of the carrying platform away from the second conveyor.

[0014] By adopting the above technical solution, the first cylinder pushes the packaging box onto the second conveyor. This solution has a simple and efficient structure and saves installation costs.

[0015] Preferably, the transfer mechanism further includes a first blocking wall, a second blocking wall, a first position sensor, and a second position sensor; the first blocking wall is located at the end of the first conveyor in the transport direction, and the first position sensor is installed at the center of the first blocking wall to detect the packaging box being in place; two second blocking walls and two second position sensors are provided, with the second blocking walls respectively located on the side of the two carrying platforms away from the first conveyor, and the two second position sensors respectively installed at the center of the two second blocking walls to detect the packaging box being in place.

[0016] By adopting the above technical solution, the first blocking arm blocks the packaging box transported by the first conveyor. After the first position sensor detects the packaging box, the packaging box is pushed onto the carrying platform by the pusher block. The second blocking wall blocks the packaging box pushed by the pusher block. After the second position sensor detects the packaging box, the packaging box is pushed onto the second conveyor by the first cylinder. This solution has no complex mechanical structure, is simple and efficient, easy to control, and has low installation cost.

[0017] Preferably, the box positioning mechanism includes positioning plates, two of which are arranged parallel to each other along the length of the first conveyor. The two positioning plates are fixed to both sides of the first conveyor, and a guide groove adapted to the size of the packaging box is formed between the two positioning plates.

[0018] By adopting the above technical solution, the positioning plate prevents the packaging box from rotating during transportation, ensuring that the packaging box is oriented vertically, which is beneficial to subsequent processes.

[0019] Preferably, the positioning plate is bent outward on the side away from the second conveyor to form a figure-eight shaped feed inlet.

[0020] By adopting the above technical solution, the figure-eight shaped feed inlet helps guide the packaging box to enter the guide groove area vertically.

[0021] Preferably, the lid fastening mechanism includes a side cover fastening assembly, which includes a first pressure rod, a second cylinder, and a robotic arm. The first pressure rod is fixedly mounted on the frame and is located directly above the transport track of the second conveyor and along the transport direction of the second conveyor. The distance between the first pressure rod and the transport track of the second conveyor is greater than the height of the packaging box and less than the height of the side cover of the packaging box when it is upright. The second cylinder is hinged to the frame, one end of the robotic arm is hinged to the cylinder shaft of the second cylinder, and the middle hinge of the robotic arm is mounted on the frame. The hinge shafts on the second cylinder and the robotic arm are parallel. The end of the robotic arm away from the second cylinder is located on the side of the first pressure rod closer to the support platform.

[0022] By adopting the above technical solution, during the operation of the packaging box on the second conveyor, the side cover of the packaging box and the side cover near the first pressure bar are first pressed down by the first pressure bar. When the side cover of the packaging box away from the first pressure bar approaches the first pressure bar, the second cylinder drives the robotic arm to bend the side cover of the packaging box near the carrying platform. The side cover of the packaging box near the carrying platform is then pressed down by the first pressure bar, completing the fastening of the two side covers of the packaging box. This solution can fasten the two side covers of the packaging box while the packaging box is in transit, without stopping the packaging box, saving packaging time, improving packaging efficiency, and the structure is simple, efficient, and saves installation costs.

[0023] Preferably, the lid fastening mechanism further includes a top cover fastening assembly, which includes a third position sensor and a third cylinder. The third position sensor is mounted on the frame and is located at the end of the first pressure rod away from the bearing platform. The third cylinder is fixedly mounted on the frame and is positioned corresponding to the position of the third position sensor to fold the top cover of the packaging box onto the first pressure rod.

[0024] By adopting the above technical solution, after the third position sensor detects the packaging box, the third cylinder works to fold the top cover of the packaging box and make it contact the upper side of the first pressure rod, preparing for the top cover of the packaging box to be fully fastened. This solution can fold the top cover of the packaging box while the packaging box is in the transportation state, without stopping the packaging box, saving packaging time and improving packaging efficiency. Moreover, the structure is simple and efficient, saving installation costs.

[0025] Preferably, the top cover fastening assembly further includes a second pressure rod, a fourth position sensor, a fourth cylinder, a fifth cylinder, and a pressure plate;

[0026] The second pressure bar is fixedly installed on the frame, located directly above the packaging box in the transport direction and along the transport direction of the second conveyor. The second pressure bar is located on the side of the first pressure bar away from the bearing platform, and its height is higher than that of the first pressure bar. The top cover of the packaging box is pressed under the second pressure bar. The fourth position sensor, the fourth cylinder, and the fifth cylinder are positioned corresponding to the second pressure bar. The fourth cylinder is fixedly installed on one side of the second conveyor, and a limit plate is provided on the opposite side of the fourth cylinder. The fourth cylinder and the limit plate cooperate to clamp the packaging box. The fourth position sensor is installed on the limit plate to detect when the packaging box is in place. The fifth cylinder is fixedly installed on the frame, located directly above the packaging box in the transport direction. The pressure plate is fixed to the end of the cylinder shaft of the fifth cylinder for pressing the top cover, and the pressure plate is located between the fourth cylinder and the second pressure bar.

[0027] By adopting the above technical solution, the second pressure rod presses down on the top cover, which is folded by the third cylinder, making the top cover easy to press; the fourth sensor detects the packaging box, and the fourth cylinder operates to push the packaging box to the side of the limiting plate and clamp it; then the fifth cylinder operates to push the pressure plate to fasten the top cover to the box body, completing the closing. This solution can accurately fasten the top cover of the packaging box, with good fastening quality, improving packaging quality, and its simple structure saves installation costs.

[0028] Preferably, the pressure plate includes a top plate and a pressure plate; the top plate is connected to the cylinder shaft of the fifth cylinder, the top plate is horizontally arranged, and the pressure plate is fixedly installed on the side of the top plate near the second conveyor; on the lower end face of the pressure plate, near the edge of the fourth cylinder, a limiting protrusion is provided along the edge of the plate body, the cross-sectional profile of the limiting protrusion is a triangle with the tip pointing downwards, when the pressure plate presses the top cover of the packaging box, the limiting protrusion is located between the pressing surface of the fourth cylinder and the tongue of the top cover.

[0029] By adopting the above technical solution, the top plate is pushed down by the fifth cylinder, and the pressure plate presses the top cover to a horizontal state. During the pressing down of the top plate, the limiting protrusion presses the tongue of the top cover into the box body, and finally completes the fastening of the top cover. The limiting protrusion is beneficial to better guide the tongue into the box body, ensuring accurate and high-quality fastening of the top cover and the box body.

[0030] In summary, this application includes at least one of the following beneficial technical effects:

[0031] 1. After the product is boxed, it is conveyed by the first conveyor. The packaging box is pushed to the carrying platform by the first pushing component. Then, the packaging box is pushed onto the second conveyor by the second pushing component. The packaging box is transported by the second conveyor through the lid fastening mechanism. The lid of the packaging box is fastened. Through the transfer device, the packaging box can complete the lid fastening directly on the production line, without having to transfer the packaging box to a separate lid fastening device for packaging. This optimizes the transfer of packaging boxes, shortens the packaging time, and improves production efficiency.

[0032] 2. By setting up two transport lines to simultaneously fasten the box lid, the efficiency of lid fastening is doubled, greatly improving packaging efficiency;

[0033] 3. This device has a simple and reliable structure, is easy to control, and saves on the installation and use costs of complex equipment. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0035] Figure 2 This is a structural schematic diagram illustrating the installation position of the box positioning mechanism in an embodiment of this application;

[0036] Figure 3 yes Figure 1 A magnified view of part A in the middle;

[0037] Figure 4 This is a structural schematic diagram illustrating the installation position of the box lid fastening mechanism in an embodiment of this application;

[0038] Figure 5 yes Figure 4 A magnified view of part B in the middle section;

[0039] Figure 6 This is a structural schematic diagram illustrating the installation position of the pressure plate in an embodiment of this application.

[0040] Reference numerals: 1. First conveyor; 2. Second conveyor; 3. Frame; 4. Box positioning mechanism; 41. Positioning plate; 42. Guide groove; 43. Connecting rod; 44. Mounting plate; 441. Fastening bolt; 5. Transfer mechanism; 51. Bearing platform; 52. First pushing assembly; 521. Driving component; 522. Pulley; 53. First blocking wall; 54. Second blocking wall; 55. First position sensor; 56. Second position sensor; 571. First cylinder; 6. Box cover fastening mechanism; 61. Side cover fastening assembly; 61 1. First pressure rod; 6111. First diagonal rod; 6112. First horizontal rod; 612. Second cylinder; 613. Robotic arm; 62. Top cover fastening assembly; 621. Third position sensor; 622. Third cylinder; 623. Second pressure rod; 6231. Second diagonal rod; 6232. Second horizontal rod; 624. Fourth position sensor; 625. Fourth cylinder; 626. Fifth cylinder; 627. Pressure plate; 6271. Top plate; 6272. Pressure plate; 6273. Limiting protrusion; 63. Limiting plate; 7. Packaging box. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1 -Appendix Figure 6 This application will be described in further detail.

[0042] This application discloses an automatic lid-closing device for hinged lid packaging boxes.

[0043] Reference Figure 1 An automatic lid-closing device for hinged lid packaging boxes includes a first conveyor 1 for feeding packaging boxes 7, a second conveyor 2 for outputting packaging boxes 7, and a frame 3 for mounting and fixing other mechanisms. The frame 3 is fixed to the first conveyor 1 and the second conveyor 2. It also includes a box positioning mechanism 4, a transfer mechanism 5, and a lid fastening mechanism 6. The box positioning mechanism 4 is set on the first conveyor 1 to adjust the position and angle of the packaging box 7. The transfer mechanism 5 is set between the first conveyor 1 and the second conveyor 2 to transfer the packaging box 7. The lid fastening mechanism 6 is set on the second conveyor 2 to close the packaging box 7.

[0044] The first conveyor 1 is connected to the conveyor belt of the upstream packaging box 7 filling equipment, as shown in the reference. Figure 1 and Figure 2 The box positioning mechanism 4 includes a positioning plate 41. Two positioning plates 41 are arranged parallel to each other along the length of the first conveyor 1. The two positioning plates 41 are fixed to the two sides of the first conveyor 1 respectively. A guide groove 42 that is adapted to the width of the packaging box 7 is formed between the two positioning plates 41. The side of the positioning plate 41 away from the second conveyor 2 is bent outward to form a figure-eight shaped feed port, which is used to guide the packaging box 7 vertically into the area of ​​the guide groove 42.

[0045] The positioning plate 41 is fixedly installed with connecting rods 43 at both ends, and the connecting rods 43 are perpendicular to the positioning plate 41; the first conveyor 1 is fixedly installed with mounting plates 44 on both sides in the transport direction, and the top of the mounting plate 44 has a through hole through which the connecting rods 43 pass. The mounting plate 44 is screwed with fastening bolts 441 that pass through the through hole; by tightening or loosening the fastening bolts 441, the position through which the connecting rods 43 pass can be adjusted, thereby adjusting the position of the positioning plate 41.

[0046] Reference Figure 1 The first conveyor 1 and the second conveyor 2 are arranged side by side and connected end to end. The second conveyor 2 is designed with two sets, which are located on both sides of the first conveyor 1. The feeding ends of the two sets of second conveyors 2 are respectively connected to the transfer mechanism 5. Both sets of second conveyors 2 are equipped with a box lid fastening mechanism 6. After the packaging box 7 is transported by the first conveyor 1 through the box positioning mechanism 4, it is transferred by the transfer mechanism 5 to the two sets of second conveyors 2. The packaging box 7 is transported by the second conveyor 2 and the box lid fastening mechanism 6 fastens the box lid. The setting of two sets of second conveyors 2 doubles the work efficiency of the lid closing process.

[0047] Reference Figure 1 and Figure 3The transfer mechanism 5 includes a carrying platform 51, a first pushing component 52, a first blocking wall 53, a second blocking wall 54, a first position sensor 55, a second position sensor 56, and a second pushing component. Two carrying platforms 51 are provided corresponding to the second conveyor 2, located on opposite sides of the first conveyor 1 and connected to the conveying plane of the two conveyors 1 and 2. The first pushing component 52 transfers the packaging box 7 from the first conveyor 1 to the carrying platform 51. The first blocking wall 53 is located at the end of the first conveyor 1 to prevent the packaging box 7 from moving further. The first position sensor 55 is installed on the first blocking wall 53 to detect whether the packaging box 7 is in position. The second pushing component pushes the packaging box 7 from the carrying platform 51 onto the second conveyor 2. The second blocking wall 54 is located on the side of the carrying platform 51 away from the first conveyor 1. The second position sensor 56 is installed on the second blocking wall 54 to detect whether the packaging box 7 is in position. Two second blocking walls 54 and two position sensors 56 are provided and installed on the two carrying platforms 51 respectively.

[0048] The first pushing assembly 52 includes a first driving component 521, a lever 522, and a linear slide rail. The first driving component 521 is a cylinder. The frame 3 includes a portal frame spanning the first conveyor 1 and two carrying platforms 51. The first driving component 521 and the linear slide rail are bolted to the portal frame. The linear slide rail includes a track and a sliding table that slides with the track. The slide rail is fixed to the frame 3. The lever 522 is fixedly installed on the sliding table of the linear slide rail. The lever 522 is a cuboid with a width corresponding to the length of the packaging box 7. When the packaging box 7 is blocked by the first blocking wall 53 while being transported along the transport direction, the first position sensor 55 senses the packaging box 7, and the first driving component 521 operates to drive the lever 522 to push the packaging box 7 into the carrying platform 51.

[0049] The second pushing component includes a first cylinder 571, which is parallel to the transport direction of the packaging box 7. One end of the first cylinder 571 is fixedly installed on the edge of the carrying platform 51 away from the second conveyor 2, and the other end of the first cylinder 571 is suspended in the air. When the packaging box 7 is pushed onto the carrying platform 51 by the first pushing component 52, the packaging box 7 is blocked by the second blocking wall 54. After the second position sensor 56 senses the packaging box 7, it transmits information to the first cylinder 571, and the first cylinder 571 operates to push the packaging box 7 away from the carrying platform 51 and into the second conveyor 2.

[0050] Reference Figure 4 and Figure 5The lid fastening mechanism 6 includes a side cover fastening assembly 61 and a top cover fastening assembly 62, which are sequentially arranged on the second conveyor 2 along the transport direction of the packaging box 7. The frame 3 includes two portal frames spanning the second conveyor 2 and a cross plate frame fixed between the two portal frames, and the lid fastening mechanism 6 is mounted on the frame 3.

[0051] The side cover fastening assembly 61 includes a first pressure rod 611, a second cylinder 612, and a robotic arm 613.

[0052] The first pressure bar 611 is fixedly installed on the frame 3. The first pressure bar 611 is suspended above the transport track of the second conveyor 2 and is set along the transport direction. The first pressure bar 611 consists of a first inclined bar 6111 and a first horizontal bar 6112. The distance between the first horizontal bar 6112 and the transport track of the second conveyor 2 is greater than the height of the packaging box 7 and less than the height of the side cover of the packaging box 7 when it is upright. The first inclined bar 6111 is located at the end of the first horizontal bar 6112 near the bearing platform 51. The first inclined bar 6111 is inclined upward to guide the bending of the side cover of the packaging box 7.

[0053] The second cylinder 612 is hinged to the frame 3, and the cylinder shaft of the second cylinder 612 is hinged to the robotic arm 613. The axes of the two hinges are parallel. (Reference) Figure 5 The second cylinder 612 is used to drive the robotic arm 613 to fold the right side cover of the packaging box 7; the second position sensor 56 senses that the packaging box 7 has left and transmits the information to the control system to control the second cylinder 612 to work. The second cylinder 612 manipulates the robotic arm 613 to fold the left side cover of the packaging box 7. After that, the packaging box 7 is immediately transported to the bottom of the first pressure bar 611 to prevent the folded side cover from returning to its original state.

[0054] The robotic arm 613 is located on the side of the first inclined bar 6111 away from the first horizontal bar 6112. The middle hinge of the robotic arm 613 is mounted on the frame 3. The upper end of the robotic arm 613 is hinged to the cylinder shaft of the second cylinder 612. The second cylinder 612 can drive the lower end of the robotic arm 613 to swing. The swing of the lower end of the robotic arm 613 realizes the knocking and fastening of the right side cover of the packaging box 7. An extension rod can be welded and fixed to the lower end of the robotic arm 613 to facilitate knocking the side cover of the packaging box 7.

[0055] The top cover fastening assembly 62 includes a third position sensor 621 and a third cylinder 622. The third position sensor 621 is located on the side of the first pressure rod 611 away from the bearing platform 51 and is mounted on the frame 3. The third position sensor 621 is located on the left side of the transport trajectory of the packaging box 7. The third cylinder 622 is fixedly mounted on the frame 3. The third cylinder 622 is positioned relative to the third position sensor 621 to fold the top cover of the packaging box 7 and press it against the first pressure rod 611. When the packaging box 7 passes the side cover fastening assembly 61, the third position sensor 621 detects the passing of the packaging box 7 and transmits the information to the third cylinder 622. The third cylinder 622 then pushes the top cover, causing it to fold to an inclined state.

[0056] refer to Figure 4 A limiting plate 63 is fixedly installed on the second conveyor 2. The limiting plate 63 is parallel to the transport direction of the packaging box 7 and is located on the side of the second conveyor 2 away from the third position sensor 621. One end of the limiting plate 63 is close to the bearing platform 51, and the other end of the limiting plate 63 is close to the discharge port of the second conveyor 2. The limiting plate 63 restricts the position and angle of the packaging box 7 pushed by the transfer mechanism 5 to ensure that the packaging box 7 remains in a vertical position.

[0057] The top cover fastening assembly 62 also includes a second pressure rod 623, a fourth position sensor 624, a fourth cylinder 625, a fifth cylinder 626, and a pressure plate 627.

[0058] The second pressure rod 623 is fixedly installed on the frame 3. The second pressure rod 623 is suspended above the transport track of the second conveyor 2 and is set along the transport direction. The height of the second pressure rod 623 is higher than that of the first pressure rod 611. The second pressure rod 623 consists of a second inclined rod 6231 and a second horizontal rod 6232. The second inclined rod 6231 is located on the side of the first horizontal rod 6112 away from the bearing platform 51, and is used to smoothly allow the top cover, which is folded by the third cylinder 622, to enter the area below the second horizontal rod 6232. The second horizontal rod 6232 is located on the side of the inclined rod away from the first horizontal rod, which restricts the top cover to keep it in the folded state, making it convenient for fastening operation.

[0059] The fourth position sensor 624 and the fourth cylinder 625 are positioned corresponding to the second pressure rod 623. The fourth cylinder 625 is fixedly installed on the second conveyor 2 and located on the opposite side of the limiting plate 63. A push plate is fixed to the end of the cylinder shaft of the fourth cylinder 625. When the fourth position sensor 624 detects the packaging box 7, the fourth cylinder 625 works, and the fourth cylinder 625 and the limiting plate 63 cooperate to clamp the packaging box 7, causing the packaging box 7 to stop moving.

[0060] The fifth cylinder 626 is also positioned corresponding to the second pressure rod 623. The fifth cylinder 626 is fixedly mounted on the frame 3 and suspended above the second conveyor 2. The cylinder shaft of the fifth cylinder 626 is positioned downwards, and the cover plate 627 is fixed to the end of the cylinder shaft of the fifth cylinder 626. The cover plate 627 is located between the fourth cylinder 625 and the second horizontal rod 6232, and the cover plate 627 is used to fasten the top cover to the box body.

[0061] Reference Figure 6 The cover plate 627 includes a top plate 6271 and a pressure plate 6272. The top plate 6271 is connected to the cylinder shaft end of the fifth cylinder 626. The top plate 6271 is horizontally arranged. The pressure plate 6272 is fixedly installed on the side of the top plate 6271 near the second conveyor 2. The lower end face of the pressure plate 6272 is provided with a limiting protrusion 6273 on the edge near the fourth cylinder 625. The cross-sectional profile of the limiting protrusion 6273 is a triangle with the tip pointing downwards.

[0062] When the fourth cylinder 625 works and cooperates with the limiting plate 63 to clamp the packaging box 7, the top cover is restricted by the second pressure rod 623 and the degree of tilt does not change. However, the tongue on the top cover is pushed by the push plate and bends inward toward the box body. Then the fifth cylinder 626 works to drive the pressure plate 627 to press down. The limiting protrusion 6273 on the pressure plate 6272 applies a force to the tongue that is tilted toward the box body. At the same time, the top plate 6271 presses down on the top cover, and finally the top cover and the box body are fastened together.

[0063] The implementation principle of this application embodiment is as follows:

[0064] After the product is boxed, it enters the first conveyor 1 for transport. After passing the box positioning mechanism 4, the packaging box 7 is blocked by the first blocking wall 53. The reciprocating motion of the pusher block 522 pushes the packaging box 7 onto the two carrying platforms 51 respectively. The packaging box 7 is then blocked by the second blocking wall 54. The second pushing component pushes the packaging box 7 from the two carrying platforms 51 onto the two sets of second conveyors 2 respectively. The packaging box 7 continues to be transported by the second conveyor 2, passing in sequence through the side cover fastening component 61 and the top cover fastening component 62, which fasten the side cover and top cover of the packaging box 7 to the box body, completing the packaging. The automatic lid closing of box 7 is achieved entirely on the production line, eliminating the need for transfer to other equipment, thus reducing packaging time and improving production efficiency. Furthermore, during the lid closing process, except for the final pressing of the top lid by the pressure plate 627, box 7 does not need to stop on the second conveyor for the closing process, shortening the lid closing time and improving closing efficiency. Simultaneously, the two sets of second conveyors 2 double the lid closing efficiency of box 7, significantly improving production efficiency.

[0065] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic hinge-lid packaging box lid closing device, characterized in that, It includes a first conveyor (1) for feeding into the packaging box (7) and a second conveyor (2) for outputting the packaging box (7). A transfer mechanism (5) for transferring the packaging box (7) is provided between the first conveyor (1) and the second conveyor (2). A box cover fastening mechanism (6) is provided on the second conveyor (2). The transfer mechanism (5) includes a carrying platform (51), a first pushing component (52), and a second pushing component; the carrying platform (51) is disposed between the first conveyor (1) and the second conveyor (2) and connects their conveying planes; the first pushing component (52) is disposed between the first conveyor (1) and the carrying platform (51) and pushes the packaging box (7) on the first conveyor (1) toward the carrying platform (51); the second pushing component is disposed on the carrying platform (51) and pushes the packaging box (7) on the carrying platform (51) toward the conveying plane of the second conveyor (2).

2. The hinge-lid type packaging box automatic lid closing device according to claim 1, characterized in that, The second conveyor (2) is provided in two sets, with the two sets of second conveyors (2) located on both sides of the first conveyor (1), and the conveying direction of the second conveyor (2) is parallel to the conveying direction of the first conveyor (1); the carrying platform (51) is provided in two sets corresponding to the second conveyor (2), with the two carrying platforms (51) located on both sides of the first conveyor (1), and the feeding ends of the two sets of second conveyors (2) are respectively connected to the two carrying platforms (51); it also includes a frame (3), which is fixed to the first conveyor (1) and the second conveyor (2); The first pushing component (52) includes a first driving member (521), a toggle block (522) and a linear slide rail; the linear slide rail is fixed on the frame (3) and located above the first conveyor (1), with both ends of the linear slide rail suspended above the bearing platforms (51) on both sides; the toggle block (522) is slidably mounted on the linear slide rail, and the first driving member (521) drives the toggle block (522) to slide on the linear slide rail; the toggle block (522) is located on the side of the linear slide rail close to the first conveyor (1) and can toggle the packaging box (7) on the first conveyor (1).

3. The hinge-lid type packaging box automatic lid closing device according to claim 2, characterized in that, The second pushing component includes a first cylinder (571) which is parallel to the transport direction of the packaging box (7) and one end of the first cylinder (571) is fixedly installed on the side of the carrying platform (51) away from the second conveyor (2).

4. The hinge-lid type packaging box automatic lid closing device according to claim 2, characterized in that, The transfer mechanism (5) further includes a first barrier wall (53), a second barrier wall (54), a first position sensor (55), and a second position sensor (56); the first barrier wall (53) is located at the end of the first conveyor (1) in the transport direction, and the first position sensor (55) is installed at the center of the first barrier wall (53) to detect the packaging box (7) in place; there are two second barrier walls (54) and two second position sensors (56), the second barrier walls (54) are respectively located on the side of the two carrying platforms (51) away from the first conveyor (1), and the two second position sensors (56) are respectively installed at the center of the two second barrier walls (54) to detect the packaging box (7) in place.

5. The hinge-lid type packaging box automatic lid closing device according to claim 1, characterized in that, The first conveyor (1) is provided with a box positioning mechanism (4), which includes a positioning plate (41). The positioning plate (41) is arranged along the length of the first conveyor (1) and two positioning plates (41) are arranged in parallel. The two positioning plates (41) are fixed to the two sides of the first conveyor (1) respectively, and a guide groove (42) adapted to the size of the packaging box (7) is formed between the two positioning plates (41).

6. The automatic closing device for a hinged lid type packaging box according to claim 5, characterized in that, The positioning plate (41) is bent outward on the side away from the second conveyor (2) to form a figure-eight shaped feed inlet.

7. The hinge-lid type packaging box automatic lid closing device according to claim 3, characterized in that, The lid fastening mechanism (6) includes a side cover fastening assembly (61), which includes a first pressure rod (611), a second cylinder (612), and a robotic arm (613). The first pressure rod (611) is fixedly installed on the frame (3). The first pressure rod (611) is located directly above the transport track of the second conveyor (2) and is arranged along the transport direction of the second conveyor (2). The distance between the first pressure rod (611) and the transport track of the second conveyor (2) is greater than the height of the packaging box (7). The height is less than the height of the side cover of the packaging box (7) when it is upright; the second cylinder (612) is hinged on the frame (3), one end of the mechanical arm (613) is hinged to the cylinder shaft of the second cylinder (612), the middle hinge of the mechanical arm (613) is mounted on the frame (3), and the hinge shafts on the second cylinder (612) and the mechanical arm (613) are parallel; the end of the mechanical arm (613) away from the second cylinder (612) is located on the side of the first pressure rod (611) near the bearing platform (51).

8. The hinge-lid type packaging box automatic lid closing device according to claim 7, characterized in that, The lid fastening mechanism (6) further includes a top cover fastening assembly (62), which is mounted on the frame (3). The top cover fastening assembly (62) includes a third position sensor (621) and a third cylinder (622). The third position sensor (621) is fixedly mounted on the frame (3) and is located at the end of the first pressure rod (611) away from the bearing platform (51). The third cylinder (622) is fixedly mounted on the frame (3) and is positioned corresponding to the third position sensor (621) to fold the top cover of the packaging box (7) onto the first pressure rod (611).

9. The hinge-lid type packaging box automatic lid closing device according to claim 8, characterized in that, The top cover fastening assembly (62) also includes a second pressure rod (623), a fourth position sensor (624), a fourth cylinder (625), a fifth cylinder (626), and a pressure plate (627); The second pressure bar (623) is fixedly installed on the frame (3). The second pressure bar (623) is located directly above the transport direction of the packaging box (7) and is set along the transport direction of the second conveyor (2). The second pressure bar (623) is set on the side of the first pressure bar (611) away from the bearing platform (51). The height of the second pressure bar (623) is higher than that of the first pressure bar (611). The top cover of the packaging box (7) is pressed under the second pressure bar (623). The fourth position sensor (624), the fourth cylinder (625), and the fifth cylinder (626) are set at the position corresponding to the second pressure bar (623). The fourth cylinder (625) is fixedly installed on the first... On one side of the second conveyor (2), a limit plate (63) is provided on the opposite side of the fourth cylinder (625). The fourth cylinder (625) and the limit plate (63) cooperate to clamp the packaging box (7). The fourth position sensor (624) is installed on the limit plate (63) to detect the packaging box (7) in place. The fifth cylinder (626) is fixedly installed on the frame (3). The fifth cylinder (626) is located directly above the packaging box (7) in the transport direction. The pressure plate (627) is fixed at the cylinder shaft end of the fifth cylinder (626) for pressing the top cover. The pressure plate (627) is located between the fourth cylinder (625) and the second pressure rod (623).

10. The hinge-lid type packaging box automatic lid closing device according to claim 9, characterized in that, The pressure plate (627) includes a top plate (6271) and a pressure plate (6272); the top plate (6271) is connected to the cylinder shaft of the fifth cylinder (626), the top plate (6271) is horizontally arranged, and the pressure plate (6272) is fixedly installed on the side of the top plate (6271) near the second conveyor (2); on the lower end face of the pressure plate (6272), on the edge near the fourth cylinder (625), a limiting protrusion (6273) is provided along the edge of the plate body. The cross-sectional profile of the limiting protrusion (6273) is a triangle with the tip pointing downwards. When the pressure plate (6272) presses the top cover of the packaging box (7), the limiting protrusion (6273) is located between the pressing surface of the fourth cylinder (625) and the tongue of the top cover.

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