Automatic carton folding device
By using an electric telescopic rod and an angle sensor in the automatic carton folding device, the problem of folding corners during the paper lid pressing process was solved, achieving higher quality carton sealing and folding effects.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-04
- Publication Date
- 2026-03-10
AI Technical Summary
In existing automatic carton folding devices, the paper lid is prone to hitting the limiting plate during the pressing process, resulting in folded corners and affecting the sealing quality of the carton.
The system employs an electric telescopic rod and an angle sensor in conjunction with a limit plate and a rotating arm to achieve precise pressing of the paper cover, avoiding corner folds. The spherical protrusions increase the contact area and reduce damage.
It improved the sealing quality of cardboard boxes, reduced damage to cardboard boxes, and increased folding efficiency and automation.
Smart Images
Figure CN223982221U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of cardboard box manufacturing technology, specifically relating to an automatic cardboard box folding device. Background Technology
[0002] A box folding machine is a mechanical device used to make packaging boxes. It takes cardboard boxes made by stamping and cutting equipment and uses the box folding machine to form them. The formed boxes are then fed into the folding area by a conveyor mechanism. In the folding area, the paper cover (ear) of the box opening is pressed and sealed. In the existing technology, after the box enters the folding area, a robotic arm presses the paper cover closer to the center of the box. Then, a limiting plate shapes the pressed paper cover. The paper cover closer to the limiting plate is pressed directly by the limiting plate. The paper cover farther from the limiting plate is pressed in the opposite direction to the conveyor mechanism and needs to be pressed onto the paper cover by the robotic arm. During the pressing process, the paper cover on the side farther from the limiting plate is prone to hitting the limiting plate when pressed, which can cause the bottom of the paper cover to fold, affecting the normal sealing of the box and thus affecting the quality of the box production. Utility Model Content
[0003] To address the above problems, the purpose of this utility model is to provide an automatic carton folding device to solve the problems mentioned in the background art.
[0004] This utility model provides an automatic carton folding device, including a conveying mechanism for conveying the carton and a folding assembly for pressing the first and second ears of the carton together. The folding assembly includes a limiting plate for pressing the first ear together, a rotating arm for pressing the second ear together, a rotating shaft fixedly installed at the end of the rotating arm away from the conveying mechanism, and a motor installed at the bottom end of the rotating shaft. It also includes an installation cylinder that passes through the end of the rotating arm away from the rotating shaft and an electric telescopic rod fixedly installed inside the installation cylinder for pressing the second ear, which is in the pressed state, back towards the inner cavity of the carton.
[0005] Preferably, it also includes an angle sensor and a controller. The signal output terminal of the angle sensor is connected to the signal input terminal of the controller to provide an angle signal to the controller. The signal output terminal of the controller is used to output a control signal to control the operation of the electric telescopic pole.
[0006] Preferably, the end of the electric telescopic rod is equipped with a spherical protrusion.
[0007] Preferably, the end of the limiting plate near the rotating shaft is folded into an arc shape.
[0008] Preferably, the end of the mounting cylinder away from the rotating shaft is flush with the end of the rotating arm, and the end away from the rotating shaft is fixedly connected to the rotating arm.
[0009] Preferably, it also includes a position sensor for detecting the position of the cardboard box. When the cardboard box is conveyed along the conveyor mechanism to the appropriate position near the rotating shaft, the controller controls the operation of the motor.
[0010] The beneficial effects of this utility model are: by adding components such as an installation cylinder and an electric telescopic rod on the basis of the existing technology, the ears that are in the same direction as the conveying mechanism can be pressed again during the pressing process of the ears of the carton, thereby avoiding the ear from folding during the pressing process and improving the quality of carton production.
[0011] By designing a spherical protrusion at the end of the electric telescopic rod, damage to the cardboard box during the pressing process is reduced; by designing an arc-shaped limiting plate, the cardboard box can be folded naturally, improving folding efficiency. Attached Figure Description
[0012] Figure 1 This is a first-view structural schematic diagram of the present invention;
[0013] Figure 2 This is an enlarged structural diagram of point A in this utility model;
[0014] Figure 3 This is a schematic diagram of the second-view structure of the present invention;
[0015] Figure 4 This is a first cross-sectional view of the present invention.
[0016] Figure 5 This is an enlarged structural diagram of section B in this utility model;
[0017] Figure 6 This is a second cross-sectional view of the present invention.
[0018] In the diagram: 1. Conveying mechanism; 2. Paper box; 3. First ear; 4. Second ear; 5. Limiting plate; 6. Rotating arm; 7. Rotating shaft; 8. Motor; 9. Mounting cylinder; 10. Folding mechanism; 11. Electric telescopic rod; 12. Angle sensor; 13. Controller; 14. Spherical protrusion; 15. Position sensor. Detailed Implementation
[0019] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of this utility model in any way.
[0020] This utility model discloses an automatic carton folding device, which mainly includes a conveying mechanism 1 for conveying the carton 2 and a folding assembly for pressing the first ear 3 and the second ear 4 of the carton 2. The folding assembly includes a limiting plate 5 for pressing the first ear 3, a rotating arm 6 for pressing the second ear 4, a rotating shaft 7 fixedly installed at the end of the rotating arm 6 away from the conveying mechanism 1, and a motor 8 installed at the bottom of the rotating shaft 7. It also includes components or other components for limiting the overall position of the carton 2. The device uses a folding mechanism to fold the carton cardboard, which is made by a stamping and cutting equipment. The formed paper box 2 is fed into the folding area by the conveying mechanism 1. In the folding area, the paper cover of the opening of the paper box 2 is pressed and sealed. In the prior art, after the paper box 2 enters the folding area, the paper cover is pressed towards the middle of the paper box 2 by the robotic arm. Then, the pressed paper cover is plasticized by the limiting plate 5. The paper cover close to the limiting plate 5 is directly pressed by the limiting plate 5. The paper cover away from the limiting plate 5 is pressed in the opposite direction to the conveying direction of the conveying mechanism 1 and needs to be pressed onto the paper cover by the robotic arm. The above is an introduction to an existing automatic paper box folding device.
[0021] As can be seen from the above, the existing automatic carton folding device has the following defects when in use: during the pressing process of the paper cover, the paper cover on the side away from the limiting plate 5 is prone to hitting the limiting plate 5 when pressed, which will cause the bottom of the paper cover to be folded, affecting the normal sealing of the carton 2 and thus affecting the quality of the carton 2. Based on the above problems, the present invention adopts the following improvement method to solve them.
[0022] like Figure 1-6 As shown, an automatic carton folding device includes a conveying mechanism 1 for conveying a carton 2 and a folding assembly for pressing a first ear 3 and a second ear 4 of the carton 2. The folding assembly includes a limiting plate 5 for pressing the first ear 3, a rotating arm 6 for pressing the second ear 4, a rotating shaft 7 fixedly installed at the end of the rotating arm 6 away from the conveying mechanism 1, and a motor 8 installed at the bottom of the rotating shaft 7. It also includes an installation cylinder 9 that passes through the end of the rotating arm 6 away from the rotating shaft 7 and an electric telescopic rod 11 fixedly installed inside the installation cylinder 9 for pressing the second ear 4, which is in the pressed state, towards the inner cavity of the carton 2 again. By adding components such as the installation cylinder 9 and the electric telescopic rod 11 to the existing technology, the ear in the same conveying direction as the conveying mechanism 1 can be pressed again during the pressing of the carton's ear, thereby avoiding the ear from folding at an angle during the pressing process and improving the quality of carton production.
[0023] Furthermore, such as Figure 2As shown, it also includes an angle sensor 12 and a controller 13. The signal output terminal of the angle sensor 12 is connected to the signal input terminal of the controller 13 to provide an angle signal to the controller 13. The signal output terminal of the controller 13 is used to output a control signal, which is used to control the operation of the electric telescopic rod 11. The angle sensor 12 is installed on the rotating shaft 7. When the angle sensor 12 detects that the motor 8 rotates 90 degrees, driving the rotating shaft 7 and the rotating arm 6 to rotate 90 degrees together, the end of the rotating arm 6 is exactly perpendicular to the second ear 4. At this time, the controller 13 drives the electric telescopic rod 11 to perform telescopic movement, which again abuts the second ear 4 pressed against the opening of the carton, causing the second ear 4 to flip towards the inner cavity of the carton at a certain angle. When the conveying mechanism 1 drives the carton to the limiting plate 5, the second ear 4 returns to the state of being in contact with the opening of the carton, thus avoiding the second ear 4 from being bent at an angle. Then the motor 8 rotates 90 degrees in the opposite direction again, driving the rotating shaft 7 and the rotating arm 6 to reset together.
[0024] Furthermore, such as Figure 5 As shown, a spherical protrusion 14 is installed at the end of the electric telescopic rod 11. The design of the spherical protrusion 14 increases the contact area between the end of the electric telescopic rod 11 and the second ear 4 of the cardboard box 2, thereby improving the pressing effect. At the same time, the spherical protrusion 14 can also reduce damage to the cardboard box 2 during the pressing process, protecting the integrity of the carton.
[0025] Furthermore, such as Figure 4-5 As shown, the end of the limiting plate 5 near the rotating shaft 7 is folded into an arc shape. The arc-shaped limiting plate 5 can naturally fold and press the first ear 3 of the carton 2 during the movement of the carton, ensuring that the carton 2 will not be damaged during the pressing process.
[0026] Furthermore, such as Figure 4-5 As shown, the end of the mounting cylinder 9 away from the rotating shaft 7 is flush with the end of the rotating arm 6, and the end away from the rotating shaft 7 is fixedly connected to the rotating arm 6. When the electric telescopic rod 11 is not working, it is stored in the mounting cylinder 9. The mounting cylinder 9 can protect the electric telescopic rod 11. At the same time, the length of the rotating arm 6 is the same as the distance from the rotating shaft 7 to the carton when it moves to a position on the same straight line as the rotating shaft 7. The end of the mounting cylinder 9 extends beyond the end of the rotating arm 6, which can prevent the mounting cylinder 9 from contacting the carton or the second ear 4 when the rotating arm 6 has not been rotated to a position perpendicular to the carton, thus affecting the normal pressing of the second ear 4.
[0027] Furthermore, such as Figure 6As shown, it also includes a position sensor 15 for detecting the position of the paper box 2. When the paper box 2 is conveyed to the appropriate position along the conveyor mechanism 1 towards the side near the rotating shaft 7, the controller 13 controls the operation of the motor 8. The position sensor 15 can accurately detect the position of the paper box 2, ensuring that the paper box 2 only starts to fold after being conveyed to the appropriate position. This improves the automation and accuracy of the folding process and avoids folding failure or damage caused by improper position of the paper box 2.
[0028] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Specific examples have been used in this document to illustrate the principles and implementation methods of this utility model. The above examples are merely to aid in understanding the method and core ideas of this utility model. The above descriptions are only preferred embodiments of this utility model. It should be pointed out that, due to the limitations of written expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or variations can be made without departing from the principles of this utility model, and the above technical features can be combined in an appropriate manner. These improvements, modifications, variations, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this utility model.
Claims
1. A carton automatic folding device, comprising a conveying mechanism (1) for conveying a carton (2) and a folding assembly for pressing a first ear (3) and a second ear (4) of the carton (2), the folding assembly comprising a limiting plate (5) for pressing the first ear (3), a rotating arm (6) for pressing the second ear (4), a rotating shaft (7) fixedly installed at an end of the rotating arm (6) away from the conveying mechanism (1), and a motor (8) installed at a bottom end of the rotating shaft (7), characterized in that: It also comprises a mounting cylinder (9) arranged through the rotating arm (6) away from the rotating shaft (7), and a motorized telescopic rod (11) fixedly arranged inside the mounting cylinder (9) and used for re-compressing the second ear part (4) in the compressed state to the position close to the inner cavity of the carton (2).
2. An automatic folding device for cartons as claimed in claim 1, characterized in that: It also comprises an angle sensor (12) and a controller (13), the signal output end of the angle sensor (12) is connected with the signal input end of the controller (13) for providing an angle signal to the controller (13), and the signal output end of the controller (13) is used for outputting a control signal for controlling the operation of the motorized telescopic rod (11).
3. An automatic folding device for cartons as claimed in claim 2, wherein: The end of the motorized telescopic rod (11) is provided with a spherical protrusion (14).
4. The automatic folding device for carton according to claim 1, characterized in that: The end of the limiting plate (5) close to the rotating shaft (7) is folded into an arc shape.
5. The automatic folding device for carton according to claim 1, characterized in that: The end of the mounting cylinder (9) away from the rotating shaft (7) is flush with the end of the rotating arm (6), and the end of the mounting cylinder (9) away from the rotating shaft (7) is fixedly connected with the rotating arm (6).
6. An automatic folding device for cartons as defined in claim 1, characterized in that: It also comprises a position sensor (15) for detecting the position of the carton (2), and when the carton (2) is conveyed to a suitable position along the conveying mechanism (1) to the side close to the rotating shaft (7), the controller (13) controls the operation of the motor (8).