A cardboard box folding mechanism

Abstract

This invention provides a carton folding mechanism, including a support frame, a guide plate suspended below the support frame, and an inclined portion at the rear end of the guide plate. A first cylinder, arranged at an angle, is mounted at the rear end of the support frame, with its output end connected to a pressure head facing the inclined portion of the guide plate. Side pressure assemblies are provided on both sides of the support frame, each comprising a second cylinder, a connecting rod, and a side pressure plate. The second cylinder is inclinedly mounted beside the support frame, its output end pivotally connected to the upper end of the connecting rod, and the lower end of the connecting rod connected to the side pressure plate. Two downwardly extending vertical plates are provided on both sides of the support frame, with the two ends of the side pressure plate rotatably positioned between the two vertical plates. This invention, through the coordination of the guide plate, pressure head, and side pressure assemblies, achieves continuous automated folding of the front, back, left, and right flaps of the carton, significantly improving folding efficiency compared to manual folding and meeting the needs of large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of cardboard box folding technology, and in particular to a cardboard box folding mechanism. Background Technology

[0002] In most industries, such as electronics, daily necessities, and food, products are typically packaged in cardboard boxes before leaving the factory to facilitate storage, transportation, and protection from damage during distribution. The cardboard box packaging process involves first placing the product into an open cardboard box, then folding the box in the front, back, left, and right directions, and finally sealing the box with tape.

[0003] Currently, most carton folding operations in the industry are done manually. However, manual folding has significant drawbacks: on the one hand, manual operation is extremely inefficient, requiring operators to manually bend all four flaps one by one to complete the folding of each carton, which is difficult to meet the packaging efficiency requirements of large-scale production; on the other hand, when encountering thicker cardboard materials, manual bending requires considerable force, and operators who repeat this action for extended periods are prone to fatigue and may even suffer hand injuries from the edges of the cardboard, posing safety hazards. It also increases the company's labor costs and management complexity.

[0004] Therefore, there is an urgent need for an automated mechanism that can replace manual folding of cardboard boxes to solve the above problems. Utility Model Content

[0005] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a carton folding mechanism to solve the problems of low efficiency, laborious operation and easy injury caused by manual folding in the prior art.

[0006] To achieve the above and other related objectives, this utility model provides a carton folding mechanism for folding the four open sides of a carton. The carton folding mechanism includes a support, a guide plate suspended below the support, and an inclined portion at the rear end of the guide plate. The rear end of the bracket is equipped with an inclined first cylinder, the output end of which is connected to a pressure head, which faces the inclined portion of the guide plate. The bracket has side pressure assemblies on both sides. The side pressure assembly includes a second cylinder, a connecting rod, and a side pressure plate. The second cylinder is installed obliquely on the side of the bracket. The output end of the second cylinder is pivotally connected to the upper end of the connecting rod, and the lower end of the connecting rod is connected to the side pressure plate. The bracket has two downwardly extending vertical plates on both sides. The two ends of the side pressure plate are rotatably disposed between the two vertical plates.

[0007] In one embodiment of the present invention, the side pressure plate has a rotating shaft arranged along its length, and the two ends of the rotating shaft are respectively rotatably connected to the corresponding upright plate.

[0008] In one embodiment of this utility model, the side pressure plate is L-shaped.

[0009] In one embodiment of the present invention, the connecting rod is arc-shaped; the output end of the second cylinder is provided with a first pivot seat, and the upper end of the connecting rod is pivotally connected to the first pivot seat.

[0010] In one embodiment of the present invention, the second cylinder is mounted on the bracket via a second pivot seat, the end of the second cylinder is rotatably connected to the second pivot seat, and the second pivot seat is provided with a positioning structure for locking the rotation angle of the second cylinder relative to the second pivot seat.

[0011] In one embodiment of the present invention, the bottom of the guide plate is arranged horizontally, the angle between the inclined portion of the guide plate and the bottom is an obtuse angle, and the inclined portion of the guide plate and the bottom form an arc transition.

[0012] In one embodiment of the present invention, a conveying mechanism is provided below the carton folding mechanism for conveying the carton from back to front along the direction of the guide plate.

[0013] As described above, the carton folding mechanism of this utility model has the following beneficial effects: 1. This utility model achieves continuous automated folding of the four flaps (front, back, left, and right) of a carton through the cooperation of a guide plate, a pressure head, and a side pressure assembly. Compared with manual folding, it greatly improves folding efficiency and can meet the needs of large-scale production. There is no need for manual bending of the carton flaps, especially for thicker cardboard, which avoids operator fatigue caused by strenuous operation, prevents hand injuries from cardboard, reduces the labor intensity of operators, and ensures operational safety.

[0014] 2. By setting an adjustable second cylinder, this utility model enables the mechanism to adapt to the folding requirements of cartons of different sizes, making it widely applicable and usable in carton packaging production lines in multiple industries. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the carton folding mechanism disclosed in the embodiments of this utility model.

[0016] Figure 2 This is a side view of the carton folding mechanism disclosed in the embodiments of this utility model.

[0017] Figure 3This is a schematic diagram of the side pressure component of the carton folding mechanism disclosed in the embodiments of this utility model in the open state.

[0018] Figure 4 This is a rear view schematic diagram of the side pressure component of the carton folding mechanism disclosed in the embodiments of this utility model in the open state.

[0019] Figure 5 This is a schematic diagram of the side pressing component of the carton folding mechanism disclosed in the embodiments of this utility model in the pressed-down state.

[0020] Figure 6 This is a rear view schematic diagram of the side pressing component of the carton folding mechanism disclosed in the embodiments of this utility model in the pressed-down state.

[0021] Component designation explanation 1. Bracket; 11. Vertical plate; 2. Guide plate; 21. Inclined part; 3. Press head; 31. First cylinder; 4. Side pressing assembly; 41. Second cylinder; 42. First pivot seat; 43. Connecting rod; 44. Side pressing plate; 45. Second pivot seat; 5. Carton. Detailed Implementation

[0022] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. It should be noted that, unless otherwise specified, the following embodiments and features can be combined with each other.

[0023] Please see Figures 1-6 This utility model provides a carton folding mechanism for folding the four open sides of the carton 5.

[0024] The carton folding mechanism includes a support 1, with a guide plate 2 suspended below the support 1. The guide plate 2 is a vertically erected flat plate structure with an inclined portion 21 at its rear end. The bottom of the guide plate 2 is horizontal, and the angle between the inclined portion 21 and the bottom is an obtuse angle, with an arc-shaped transition between the inclined portion 21 and the bottom. The guide plate 2 guides the side flaps of the carton 5 during transport, and the design of its inclined portion 21 is a key structure for achieving the front folding action. The arc-shaped transition structure reduces friction and collision between the carton 5 and the guide plate 2, protecting the carton 5 and preventing scratches or damage to its surface.

[0025] A first cylinder 31, arranged at an angle, is installed at the rear end of the support 1. The output end of the first cylinder 31 is connected to a pressure head 3, which faces the inclined portion 21 of the guide plate 2. When the carton 5 is conveyed to a specific position, the first cylinder 31 drives the pressure head 3 to tilt and press down, thereby completing the folding action of the back cover of the carton 5. Preferably, the angle between the movement path of the pressure head 3 and the horizontal direction is between 30° and 50°, which can fold the back cover of the carton 5 with less effort.

[0026] Side pressure components 4 are provided on both sides of the bracket 1. The side pressure components 4 are used to complete the folding action of the left and right flaps of the carton 5. Each side pressure component 4 includes a second cylinder 41, a connecting rod 43, and a side pressure plate 44. The second cylinder 41 is mounted on the bracket 1 through a second pivot seat 45. The end of the second cylinder 41 is rotatably connected to the second pivot seat 45, and the second pivot seat 45 is provided with a positioning structure to lock the rotation angle of the second cylinder 41 relative to the second pivot seat 45. The output end of the second cylinder 41 is pivotally connected to the upper end of the connecting rod 43, and the lower end of the connecting rod 43 is connected to the side pressure plate 44. Two downwardly extending vertical plates 11 are provided on both sides of the bracket 1, and the two vertical plates 11 are arranged at intervals. The side pressure plate 44 has a rotating shaft arranged along its length direction, and the two ends of the rotating shaft are rotatably connected to the corresponding vertical plate 11. Through the extension and retraction movement of the second cylinder 41, the connecting rod 43 can be driven to move, thereby driving the side pressure plate 44 to rotate to complete the flap folding action.

[0027] Furthermore, the side pressure plate 44 is L-shaped. The L-shaped side pressure plate 44 structure design can better fit the side of the carton 5, and exert a more stable pressing effect on the carton 5 during the folding process, ensuring the flatness and reliability of the fold, and avoiding the situation of the fold offset or incomplete fold.

[0028] Furthermore, the connecting rod 43 is arc-shaped. The arc-shaped structure of the connecting rod 43 can reduce interference with other components during movement, and at the same time make the force transmission smoother. The output end of the second cylinder 41 is provided with a first pivot seat 42, and the upper end of the connecting rod 43 is pivotally connected to the first pivot seat 42.

[0029] The carton folding mechanism is equipped with a conveying mechanism below it, which is used to transport the carton 5 from back to front along the direction of the guide plate 2.

[0030] Working principle: First, place the open carton 5 containing the product on the conveyor mechanism. The conveyor mechanism starts and transports the carton 5 from back to front along the direction of the guide plate 2. During the forward conveying of the carton 5, the front cover of the carton 5 first contacts the inclined part 21 of the guide plate 2. As the conveying mechanism continues to convey, the front cover of the carton 5 gradually flips inward under the squeezing action of the inclined part 21, thereby realizing the folding action of the front cover of the carton 5. After the front cover is folded, the carton 5 continues to move forward under the drive of the conveying mechanism. When the rear cover of the carton 5 moves to the front of the pressure head 3, the first cylinder 31 receives the signal and starts, driving the pressure head 3 to tilt and press down in the direction of the inclined part 21. The pressure head 3 acts on the rear cover of the carton 5, causing the rear cover to fold inward, and the folding action is completed. Immediately afterwards, the folded carton 5 is conveyed between the side pressure components 4 on both sides. At this time, the second cylinders 41 on both sides are started at the same time. The output end of the second cylinder 41 extends and drives the connecting rod 43 to move. The connecting rod 43 drives the side pressure plate 44 to rotate around the rotating shaft. The side pressure plates 44 on both sides rotate to the left and right sides of the carton 5 respectively, squeezing and folding the left and right folds of the carton 5 to complete the left and right fold actions.

[0031] The entire folding process is carried out continuously as the carton is conveyed, without the need for manual intervention. This automates the folding process, significantly improving efficiency and avoiding the labor and safety issues associated with manual operation.

[0032] In summary, this invention, through the coordination of guide plates, pressure heads, and side pressure components, achieves continuous automated folding of the four flaps (front, back, left, and right) of a carton. Compared to manual folding, it significantly improves folding efficiency and can meet the needs of large-scale production. Therefore, this invention effectively overcomes the various shortcomings of existing technologies and has high industrial application value.

[0033] The terms used in this specification, such as "upper", "lower", "left", "right", "front", "back", "middle" and "one", are merely for clarity of description and are not intended to limit the scope of implementation of this utility model. Any changes or adjustments to their relative relationships, without substantially altering the technical content, shall also be considered within the scope of implementation of this utility model.

[0034] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit this utility model. All equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A carton folding mechanism, characterized in that, Includes a bracket, with a guide plate suspended below the bracket, and the rear end of the guide plate having an inclined portion; The rear end of the bracket is equipped with an inclined first cylinder, the output end of which is connected to a pressure head, which faces the inclined portion of the guide plate. The bracket has side pressure assemblies on both sides. The side pressure assembly includes a second cylinder, a connecting rod, and a side pressure plate. The second cylinder is installed obliquely on the side of the bracket. The output end of the second cylinder is pivotally connected to the upper end of the connecting rod, and the lower end of the connecting rod is connected to the side pressure plate. The bracket has two downwardly extending vertical plates on both sides. The two ends of the side pressure plate are rotatably disposed between the two vertical plates.

2. The carton folding mechanism according to claim 1, characterized in that, The side pressure plate has a rotating shaft arranged along its length, and the two ends of the rotating shaft are respectively rotatably connected to the corresponding upright plate.

3. The carton folding mechanism according to claim 1, characterized in that, The side pressure plate is L-shaped.

4. The carton folding mechanism according to claim 1, characterized in that, The connecting rod is arc-shaped; the output end of the second cylinder is provided with a first pivot seat, and the upper end of the connecting rod is pivotally connected to the first pivot seat.

5. The carton folding mechanism according to claim 1, characterized in that, The second cylinder is mounted on the bracket via a second pivot seat. The end of the second cylinder is rotatably connected to the second pivot seat, and the second pivot seat is provided with a positioning structure for locking the rotation angle of the second cylinder relative to the second pivot seat.

6. The carton folding mechanism according to claim 1, characterized in that, The bottom of the guide plate is arranged horizontally, the angle between the inclined part of the guide plate and the bottom is an obtuse angle, and the inclined part of the guide plate and the bottom form an arc transition.

7. The carton folding mechanism according to claim 1, characterized in that, Below the carton folding mechanism is a conveying mechanism for transporting the carton from back to front along the direction of the guide plate.

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