Carton folding apparatus

Abstract

The utility model provides a carton folding device: including frame, paperboard conveying mechanism and carton folding mechanism, carton folding mechanism includes folding support, horizontal movement subassembly, first folding subassembly and second folding subassembly, folding support, first folding subassembly and second folding subassembly set up on the frame, and first folding subassembly is located between second folding subassembly and paperboard conveying mechanism, first folding subassembly is used for folding four sides of paperboard, and preliminary forms carton, and second folding subassembly is used for twice folding the outer end of four sides of carton to the inside side, horizontal movement subassembly is connected on folding support with sliding, is used for conveying the carton of four sides folding well on first folding subassembly to second folding subassembly, and conveying the carton of twice folding well on second folding subassembly to carton blanking station, the carton folding process of the utility model is full automatic, need not manual operation, not only high efficiency, and save time and effort.

Description

Technical Field

[0001] This utility model relates to the field of battery box folding technology, specifically to a paper box folding device. Background Technology

[0002] After the batteries are produced, they are transported to the battery packaging station via a conveyor line. Four batteries are packaged together as a group. The packaged batteries are then transported to the boxing station via a battery feeding device. Finally, these batteries are placed in rows into cardboard boxes to complete the boxing process.

[0003] When battery boxes leave the factory, they are flat pieces of cardboard that have been cut. They need to be folded on all four sides, and then the outer edges of the four sides are folded inwards a second time to form a box with an open top. Most existing battery boxes are folded manually, which is not only time-consuming and labor-intensive, but also inefficient. Moreover, manually folded boxes are prone to creases, which affect product quality. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a device that can automatically fold cardboard into a paper box.

[0005] The technical solution of this utility model is to provide a paper box folding device with the following structure: The device includes a frame and a material rack, a cardboard conveying mechanism, and a carton folding mechanism mounted on the frame. The material rack is used to hold stacked cardboard, the cardboard conveying mechanism is used to pick up the cardboard from the bottom of the material rack and convey it to the carton folding mechanism, and the carton folding mechanism is used to fold the cardboard into a carton. The cardboard box folding mechanism includes a folding bracket, a horizontal moving component, a first folding component, and a second folding component. The folding bracket, the first folding component, and the second folding component are mounted on a frame, with the first folding component located between the second folding component and the cardboard conveying mechanism. The first folding component is used to fold the four sides of the cardboard to initially form a cardboard box. The second folding component is used to fold the outer ends of the four sides of the cardboard box inwards a second time. The horizontal moving component is slidably connected to the folding bracket and is used to convey the cardboard box folded on the first folding component to the second folding component, and to convey the cardboard box folded on the second folding component to the cardboard box unloading station.

[0006] After adopting the above structure, the paper box folding device of this utility model has the following advantages compared with the prior art: This invention uses a cardboard conveying mechanism to pick up the cardboard from the bottom of the material rack and transport it to a cardboard box folding mechanism. A first folding component folds the cardboard on all four sides to initially form a cardboard box. Then, a horizontal moving component transports the folded cardboard box to a second folding component, which folds the outer edges of the cardboard box inwards a second time to form the final box. Finally, the horizontal moving component transports the folded cardboard box from the second folding component to the cardboard box unloading station. The cardboard box folding process of this invention is fully automated, requiring no manual operation, thus achieving high efficiency and saving time and labor.

[0007] Preferably, the rack has an inclined accommodating space extending through its upper and lower ends for accommodating stacked cardboard. Multiple radial protrusions are located at the bottom of the accommodating space on the rack to prevent the cardboard from automatically detaching from the accommodating space. Because cardboard has a certain degree of flexibility, the cardboard conveying mechanism can directly pull the cardboard from the bottom of the rack after picking it up; therefore, the radial protrusions do not affect the cardboard picking process.

[0008] Preferably, the cardboard conveying mechanism includes a first cardboard conveying cylinder, a cardboard suction plate, a second cardboard conveying cylinder, and a cardboard pushing rod. The first cardboard conveying cylinder is rotatably connected to the frame. One end of the cardboard suction plate is hinged to the frame, and the bottom of the other end is hinged to the output end of the first cardboard conveying cylinder. A first vacuum nozzle is connected to the cardboard suction plate. The first cardboard conveying cylinder drives the cardboard suction plate to rotate, thereby causing the first vacuum nozzle to adhere to the cardboard at the bottom of the material rack, remove the cardboard, and then rotate it until the cardboard is in a horizontal state. The second cardboard conveying cylinder is located on the frame on the side away from the first folding assembly. The cardboard pushing rod is connected to the output end of the second cardboard conveying cylinder. The second cardboard conveying cylinder drives the cardboard pushing rod to move horizontally and pushes the cardboard on the cardboard suction plate horizontally to the first folding assembly.

[0009] When picking up cardboard, the first cardboard conveying cylinder drives the cardboard suction plate to rotate, so that the first vacuum nozzle comes into contact with the cardboard at the bottom of the material rack. After the first vacuum nozzle picks up the cardboard, the first cardboard conveying cylinder drives the cardboard suction plate to rotate in the opposite direction, pulling the cardboard out of the material rack and rotating the cardboard to a horizontal position. Then the first vacuum nozzle releases its suction force on the cardboard, and the second cardboard conveying cylinder drives the cardboard push rod to move horizontally, pushing the cardboard horizontally to the first folding assembly.

[0010] Preferably, the horizontal moving assembly includes a first sliding seat, a paper box horizontal moving cylinder, a first forming seat, and a second forming seat; the folding bracket is provided with a first slide rail extending along the paper box conveying direction, and the first sliding seat is slidably connected to the first slide rail; the paper box horizontal moving cylinder is fixedly mounted on the frame, and its output end is connected to the first sliding seat for driving the first sliding seat to move along the first slide rail; The first forming seat and the second forming seat are arranged sequentially and at intervals below the first sliding seat along the paper box conveying direction. Both the first forming seat and the second forming seat are provided with a folding cavity with an open bottom. A second vacuum nozzle is connected to the folding cavity for adsorbing onto the top of the paper box. The first sliding seat is provided with a vertical lifting cylinder. The output end of the vertical lifting cylinder extends downward and is connected to the first forming seat and the second forming seat for driving the first forming seat and the second forming seat to lift synchronously. In the initial state, the first forming seat and the second forming seat are respectively located above the first folding assembly and the second folding assembly.

[0011] Preferably, the first folding assembly includes a first lifting cylinder and a first folding plate connected to the output end of the first lifting cylinder; the first lifting cylinder is used to drive the first folding plate to move vertically upward, pushing the cardboard into the folding cavity of the first forming seat, so that the four sides of the cardboard complete the first fold. The folding cavity matches the shape of the folded cardboard box, so when the cardboard is pushed into the folding cavity, the four sides of the cardboard will automatically complete the first fold.

[0012] Preferably, the first folding assembly further includes a first side-folding cylinder connected to the folding bracket. The output ends of both sides of the first side-folding cylinder are connected to first side-folding plates. The first side-folding cylinder drives the two first side-folding plates to move towards each other, thereby folding the outer ends of the two long sides of the cardboard box on the first forming seat inwards. This facilitates the subsequent folding of the outer ends of the two short sides inwards.

[0013] Preferably, the second folding assembly includes two horizontally folding cylinders symmetrically arranged on the frame, and a first support base disposed between the two horizontally folding cylinders; a second side folding plate and a flipping folding cylinder are connected to the output end of the horizontally folding cylinder, and a third side folding plate is rotatably connected to the output end of the flipping folding cylinder; the horizontally folding cylinder is used to drive the second side folding plate to move horizontally, folding the outer ends of the two short sides of the cardboard box on the second forming seat inward; the flipping folding cylinder is used to drive the third side folding plate to flip, folding the outer ends of the two short sides inward again. During this process, the outer ends of the two short sides will also press the outer ends of the two long sides that have been folded into the inner cavity of the cardboard box, thus completely completing the folding of the cardboard box.

[0014] Preferably, the carton folding mechanism further includes a carton unloading assembly, which includes a second slide rail mounted on the frame and extending along the carton conveying direction. A second sliding seat is slidably connected to the second slide rail, and a vertical drive cylinder is connected to the second sliding seat. A second support seat is connected to the output end of the vertical drive cylinder. The vertical drive cylinder is used to drive the second support seat to move vertically up and down, and the second support seat is used to carry the folded carton conveyed by the horizontal movement assembly. A horizontal drive cylinder is also connected to the frame, and the output end of the horizontal drive cylinder is connected to the second sliding seat to drive the second sliding seat to slide along the second slide rail and to switch the second support seat between the carton unloading station and the next station. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is a schematic diagram of the material rack structure of this utility model.

[0018] Figure 4 This is a partial structural diagram of the cardboard conveying mechanism in this utility model.

[0019] Figure 5 This is a schematic diagram of the paper box folding mechanism in this utility model.

[0020] Figure 6 This is a schematic diagram of the structure of the folding bracket and the horizontal moving component in this utility model.

[0021] Figure 7 Half-sectional view of the folding bracket and horizontal moving component in this utility model.

[0022] Figure 8 This is a schematic diagram of the structure of the first folding component in this utility model.

[0023] Figure 9 This is a schematic diagram of the structure of the second folding component in this utility model.

[0024] Figure 10 This is a schematic diagram of the paper box feeding assembly in this utility model.

[0025] Explanation of reference numerals in the attached figures: 1. Frame; 2. Material rack; 21. Radial protrusion; 3. Cardboard conveying mechanism; 31. First cardboard conveying cylinder; 32. Cardboard suction plate; 33. Second cardboard conveying cylinder; 34. Cardboard push rod; 35. First vacuum nozzle; 4. Carton folding mechanism; 41. Folding bracket; 411. First slide rail; 42. Horizontal movement assembly; 421. First sliding seat; 422. Carton horizontal movement cylinder; 423. First forming seat; 424. Second forming seat; 425. Second vacuum nozzle; 426. Vertical lifting cylinder; 4 3. First folding assembly, 431. First lifting cylinder, 432. First folding plate, 433. First side folding cylinder, 434. First side folding plate, 44. Second folding assembly, 441. Horizontal folding cylinder, 442. First support base, 443. Second side folding plate, 444. Flipping folding cylinder, 445. Third side folding plate, 45. Paper box feeding assembly, 451. Second slide rail, 452. Second sliding seat, 453. Vertical drive cylinder, 454. Second support base, 455. Horizontal drive cylinder. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0027] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc., are only used to distinguish the names of various components and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0028] like Figures 1-10 As shown, this utility model discloses a paper box folding device: including a frame 1 and a material rack 2, a paperboard conveying mechanism 3 and a paper box folding mechanism 4 arranged on the frame 1; the material rack 2 is used to accommodate stacked paperboards, the paperboard conveying mechanism 3 is used to pick up the paperboard at the bottom of the material rack 2 and convey it to the paper box folding mechanism 4, and the paper box folding mechanism 4 is used to fold the paperboard into a paper box.

[0029] like Figures 1-3As shown, the material rack 2 has an inclined accommodating space extending through its upper and lower ends for accommodating stacked cardboard. Multiple radial protrusions 21 are located at the bottom of the accommodating space on the material rack 2 to prevent the cardboard from automatically detaching from the accommodating space. Because cardboard has a certain degree of flexibility, the cardboard conveying mechanism 3 can directly pull the cardboard from the bottom of the material rack 2 after picking it up. Therefore, the radial protrusions 21 can both prevent the cardboard from automatically detaching from the accommodating space and not affect the normal picking up of the cardboard.

[0030] For example Figures 1-4 As shown, the cardboard conveying mechanism 3 includes a first cardboard conveying cylinder 31, a cardboard suction plate 32, a second cardboard conveying cylinder 33, and a cardboard pushing rod 34. The first cardboard conveying cylinder 31 is rotatably connected to the frame 1. One end of the cardboard suction plate 32 is hinged to the frame 1, and the bottom of the other end is hinged to the output end of the first cardboard conveying cylinder 31. A first vacuum nozzle 35 is connected to the cardboard suction plate 32. The first cardboard conveying cylinder 31 is used to drive the cardboard suction plate 32 to rotate, thereby causing the first vacuum nozzle 35 to adhere to the cardboard at the bottom of the material rack 2, remove the cardboard, and then rotate it until the cardboard is in a horizontal state. The second cardboard conveying cylinder 33 is set on the frame 1 on the side away from the carton folding mechanism 4. The cardboard pushing rod 34 is connected to the output end of the second cardboard conveying cylinder 33. The second cardboard conveying cylinder 33 is used to drive the cardboard pushing rod 34 to move horizontally and push the cardboard on the cardboard suction plate 32 horizontally to the carton folding mechanism 4.

[0031] When picking up cardboard, the first cardboard conveying cylinder 31 drives the cardboard suction plate 32 to rotate, so that the first vacuum nozzle 35 is in contact with the cardboard at the bottom of the material rack 2. After the first vacuum nozzle 35 sucks on the cardboard, the first cardboard conveying cylinder 31 drives the cardboard suction plate 32 to rotate in the opposite direction, pulls the cardboard out of the material rack 2, and rotates the cardboard to the horizontal direction. Then the first vacuum nozzle 35 releases the suction force on the cardboard, and the second cardboard conveying cylinder 33 drives the cardboard push rod 34 to move horizontally, pushing the cardboard horizontally to the carton folding mechanism 4.

[0032] The paper box folding mechanism 4 includes a folding bracket 41, a horizontal moving component 42, a first folding component 43, and a second folding component 44. The folding bracket 41, the first folding component 43, and the second folding component 44 are arranged on the frame 1, and the first folding component 43 is located between the second folding component 44 and the paperboard conveying mechanism 3. When the paperboard is conveyed, the paperboard conveying mechanism 3 will push it horizontally to the first folding component 43.

[0033] The first folding assembly 43 is used to fold the four sides of the cardboard to initially form a cardboard box. The second folding assembly 44 is used to fold the outer ends of the four sides of the cardboard box inward for a second time. The horizontal moving assembly 42 is slidably connected to the folding bracket 41 and is used to transport the cardboard box folded on the four sides of the first folding assembly 43 to the second folding assembly 44, and to transport the cardboard box folded twice on the second folding assembly 44 to the cardboard box unloading station.

[0034] The horizontal moving assembly 42 includes a first sliding seat 421, a paper box horizontal moving cylinder 422, a first forming seat 423, and a second forming seat 424; the folding bracket 41 is provided with a first slide rail 411 extending along the paper box conveying direction, and the first sliding seat 421 is slidably connected to the first slide rail 411; the paper box horizontal moving cylinder 422 is fixedly mounted on the frame 1, and its output end is connected to the first sliding seat 421 for driving the first sliding seat 421 to move along the first slide rail 411.

[0035] The first forming seat 423 and the second forming seat 424 are arranged sequentially and spaced below the first sliding seat 421 along the paper box conveying direction. Both the first forming seat 423 and the second forming seat 424 are provided with folding cavities with open bottoms. A second vacuum nozzle 425 is connected inside the folding cavity for adsorbing onto the top of the paper box. The first sliding seat 421 is provided with a vertical lifting cylinder 426. The output end of the vertical lifting cylinder 426 extends downward and is connected to the first forming seat 423 and the second forming seat 424 for driving the first forming seat 423 and the second forming seat 424 to lift synchronously. In the initial state, the first forming seat 423 and the second forming seat 424 are located above the first folding assembly 43 and the second folding assembly 44, respectively.

[0036] The first folding assembly 43 includes a first lifting cylinder 431 and a first folding plate 432 connected to the output end of the first lifting cylinder 431. The first lifting cylinder 431 is used to drive the first folding plate 432 to move vertically upward, pushing the cardboard into the folding cavity of the first forming seat 423, so that the four sides of the cardboard complete the first fold. The folding cavity matches the shape of the folded cardboard box, so when the cardboard is pushed into the folding cavity, the four sides of the cardboard will automatically complete the first fold.

[0037] The first folding assembly 43 also includes a first side folding cylinder 433 connected to the folding bracket 41. The output ends on both sides of the first side folding cylinder 433 are connected to first side folding plates 434. The first side folding cylinder 433 is used to drive the two first side folding plates 434 to move towards each other, thereby folding the outer ends of the two long sides of the cardboard box on the first forming seat 423 inward, which facilitates the subsequent folding of the outer ends of the two short sides inward.

[0038] The second folding assembly 44 includes two horizontal folding cylinders 441 symmetrically arranged on the frame 1, and a first support base 442 disposed between the two horizontal folding cylinders 441. A second side folding plate 443 and a flipping folding cylinder 444 are connected to the output end of the horizontal folding cylinder 441, and a third side folding plate 445 is rotatably connected to the output end of the flipping folding cylinder 444. The horizontal folding cylinder 441 is used to drive the second side folding plate 443 to move horizontally, folding the outer ends of the two short sides of the paper box on the second forming seat 424 inward. The flipping folding cylinder 444 is used to drive the third side folding plate 445 to flip, folding the outer ends of the two short sides inward again. During this process, the outer ends of the two short sides will also press the outer ends of the two long sides that have been folded into the inner cavity of the paper box, thus completely completing the folding of the paper box.

[0039] The paper box folding mechanism 4 also includes a paper box unloading assembly 45. The paper box unloading assembly 45 includes a second slide rail 451 mounted on the frame 1 and extending along the paper box conveying direction. A second sliding seat 452 is slidably connected to the second slide rail 451. A vertical drive cylinder 453 is connected to the second sliding seat 452. A second support seat 454 is connected to the output end of the vertical drive cylinder 453. The vertical drive cylinder 453 is used to drive the second support seat 454 to move vertically up and down. The second support seat 454 is used to carry the folded paper box conveyed by the horizontal moving assembly 42. A horizontal drive cylinder 455 is also connected to the frame 1. The output end of the horizontal drive cylinder 455 is connected to the second sliding seat 452 and is used to drive the second sliding seat 452 to slide along the second slide rail 451 and drive the second support seat 454 to switch between the paper box unloading station and the next station.

[0040] The specific working process of this paper box folding device is as follows: First, the first cardboard conveying cylinder 31 drives the cardboard suction plate 32 to rotate, so that the first vacuum nozzle 35 is in contact with the cardboard at the bottom of the material rack 2. After the first vacuum nozzle 35 is attached to the cardboard, the first cardboard conveying cylinder 31 drives the cardboard suction plate 32 to rotate in the opposite direction, pulls the cardboard out of the material rack 2, and rotates the cardboard to a horizontal position. Then, the first vacuum nozzle 35 releases its suction force on the cardboard, and the second cardboard conveying cylinder 33 drives the cardboard push rod 34 to move horizontally, pushing the cardboard horizontally to the first folding assembly 43.

[0041] Then, the first lifting cylinder 431 drives the first folding plate 432 to move vertically upward, pushing the cardboard into the folding cavity of the first forming seat 423, so that the four sides of the cardboard are folded for the first time; then the first side folding cylinder 433 drives the two first side folding plates 434 to move towards each other, folding the outer ends of the two long sides of the cardboard box on the first forming seat 423 inward multiple times; during this process, the horizontal folding cylinder 441 drives the second side folding plate 443 to move horizontally, folding the outer ends of the two short sides of the cardboard box on the second forming seat 424 inward, and the flipping folding cylinder 444 drives the third side folding plate 445 to flip, folding the outer ends of the two short sides inward again to completely complete the folding of the cardboard box.

[0042] Then, the vertical lifting cylinder 426 drives the first forming seat 423 and the second forming seat 424 to rise synchronously. Next, the carton horizontal moving cylinder 422 drives the first sliding seat 421 to move along the first slide rail 411, so that the first forming seat 423 is above the first support seat 442 and the second forming seat 424 is above the second support seat 454. Then, the vertical lifting cylinder 426 drives the first forming seat 423 and the second forming seat 424 to fall synchronously, so that the carton that has been initially folded in the first forming seat 423 is placed on the first support seat 442 and the carton that has been completely folded in the second forming seat 424 is placed on the second support seat 454. Then, the second vacuum nozzles 425 in the first forming seat 423 and the second forming seat 424 release their suction on the carton, and the vertical lifting cylinder 426 drives the first forming seat 423 and the second forming seat 424 to rise synchronously, so that the two cartons are detached from the folding cavities of the first forming seat 423 and the second forming seat 424.

[0043] Finally, the horizontal moving cylinder 422 and the vertical lifting cylinder 426 drive the first forming seat 423 and the second forming seat 424 to reset. After resetting, the second forming seat 424 will press the cardboard box on the first support seat 442 into its folding cavity, which will facilitate the second folding assembly 44 to fold again. The cardboard box located on the second support seat 454 will be moved to the next station under the drive of the horizontal driving cylinder 455.

[0044] The folding process of this paper box is fully automated, requiring no manual operation, which is not only highly efficient but also saves time and effort.

[0045] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A carton folding apparatus, characterised in that: It includes a frame (1) and a material rack (2), a cardboard conveying mechanism (3) and a cardboard folding mechanism (4) disposed on the frame (1); the material rack (2) is used to accommodate stacked cardboard, the cardboard conveying mechanism (3) is used to pick up the cardboard at the bottom of the material rack (2) and convey it to the cardboard folding mechanism (4), and the cardboard folding mechanism (4) is used to fold the cardboard into a cardboard box; The paper box folding mechanism (4) includes a folding bracket (41), a horizontal moving component (42), a first folding component (43), and a second folding component (44). The folding bracket (41), the first folding component (43), and the second folding component (44) are mounted on the frame (1), and the first folding component (43) is located between the second folding component (44) and the paperboard conveying mechanism (3). The first folding component (43) is used to fold the four sides of the paperboard to initially form a paper box. The second folding component (44) is used to fold the outer ends of the four sides of the paper box inward for a second time. The horizontal moving component (42) is slidably connected to the folding bracket (41) and is used to transport the paper box folded on the four sides of the first folding component (43) to the second folding component (44) and transport the paper box folded on the second folding component (44) to the paper box unloading station.

2. The carton folding apparatus of claim 1, wherein: The rack (2) is provided with an inclined accommodating space that extends through its upper and lower ends for accommodating stacked cardboard; the rack (2) is provided with multiple radial protrusions (21) at the bottom of the accommodating space to prevent the cardboard in the accommodating space from automatically falling out.

3. The carton folding apparatus of claim 2, wherein: The cardboard conveying mechanism (3) includes a first cardboard conveying cylinder (31), a cardboard suction plate (32), a second cardboard conveying cylinder (33), and a cardboard pushing rod (34). The first cardboard conveying cylinder (31) is rotatably connected to the frame (1). One end of the cardboard suction plate (32) is hinged to the frame (1), and the bottom of the other end is hinged to the output end of the first cardboard conveying cylinder (31). A first vacuum nozzle (35) is connected to the cardboard suction plate (32). The first cardboard conveying cylinder (31) is used to drive the cardboard suction plate (33). 2) Rotate to make the first vacuum nozzle (35) fit against the cardboard at the bottom of the material rack (2), remove the cardboard and then rotate until the cardboard is in a horizontal state; the second cardboard conveying cylinder (33) is set on the frame (1) on the side away from the first folding assembly (43), the cardboard push rod (34) is connected to the output end of the second cardboard conveying cylinder (33), the second cardboard conveying cylinder (33) is used to drive the cardboard push rod (34) to move horizontally and push the cardboard on the cardboard suction plate (32) horizontally to the first folding assembly (43).

4. The carton folding apparatus of claim 1, wherein: The horizontal moving assembly (42) includes a first sliding seat (421), a paper box horizontal moving cylinder (422), a first forming seat (423), and a second forming seat (424); the folding bracket (41) is provided with a first slide rail (411) extending along the paper box conveying direction, and the first sliding seat (421) is slidably connected to the first slide rail (411); the paper box horizontal moving cylinder (422) is fixedly mounted on the frame (1), and its output end is connected to the first sliding seat (421) for driving the first sliding seat (421) to move along the first slide rail (411); The first forming seat (423) and the second forming seat (424) are arranged sequentially and spaced below the first sliding seat (421) along the paper box conveying direction. Both the first forming seat (423) and the second forming seat (424) are provided with folding cavities with open bottoms. A second vacuum nozzle (425) is connected inside the folding cavity for adsorbing onto the top of the paper box. The first sliding seat (421) is provided with a vertical lifting cylinder (426). The output end of the vertical lifting cylinder (426) extends downward and is connected to the first forming seat (423) and the second forming seat (424) for driving the first forming seat (423) and the second forming seat (424) to lift synchronously. In the initial state, the first forming seat (423) and the second forming seat (424) are located above the first folding assembly (43) and the second folding assembly (44), respectively.

5. The carton folding apparatus of claim 4, wherein: The first folding assembly (43) includes a first lifting cylinder (431) and a first folding plate (432) connected to the output end of the first lifting cylinder (431); the first lifting cylinder (431) is used to drive the first folding plate (432) to move vertically upward, push the cardboard into the folding cavity of the first forming seat (423), so that the four sides of the cardboard are folded for the first time.

6. The carton folding apparatus of claim 5, wherein: The first folding assembly (43) also includes a first side folding cylinder (433) connected to the folding bracket (41). The output ends on both sides of the first side folding cylinder (433) are connected to first side folding plates (434). The first side folding cylinder (433) is used to drive the two first side folding plates (434) to move towards each other, thereby folding the outer ends of the two long sides of the paper box on the first forming seat (423) inward.

7. The carton folding apparatus of claim 6, wherein: The second folding assembly (44) includes two horizontal folding cylinders (441) symmetrically arranged on the frame (1) and a first support base (442) arranged between the two horizontal folding cylinders (441); a second side folding plate (443) and a flip folding cylinder (444) are connected to the output end of the horizontal folding cylinder (441), and a third side folding plate (445) is rotatably connected to the output end of the flip folding cylinder (444); the horizontal folding cylinder (441) is used to drive the second side folding plate (443) to move horizontally, folding the outer ends of the two short sides of the paper box on the second forming seat (424) inward; the flip folding cylinder (444) is used to drive the third side folding plate (445) to flip, folding the outer ends of the two short sides inward again.

8. The carton folding apparatus of claim 1, wherein: The paper box folding mechanism (4) further includes a paper box feeding assembly (45), which includes a second slide rail (451) mounted on the frame (1) and extending along the paper box conveying direction. A second slide seat (452) is slidably connected to the second slide rail (451), and a vertical drive cylinder (453) is connected to the second slide seat (452). A second support seat (454) is connected to the output end of the vertical drive cylinder (453). The second support (454) is used to drive the second support (454) to move vertically up and down. The second support (454) is used to carry the folded cardboard box conveyed by the horizontal moving component (42). The frame (1) is also connected to a horizontal driving cylinder (455). The output end of the horizontal driving cylinder (455) is connected to the second sliding seat (452) to drive the second sliding seat (452) to slide along the second slide rail (451) and drive the second support (454) to switch between the cardboard box unloading station and the next station.

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