Automatic carton edge folding and sealing equipment
By combining a ring plate and an electric push rod with a positioning sleeve, the problem of manually adjusting the positioning sleeve when changing film in existing equipment is solved, enabling precise adjustment of the film position and improving the efficiency of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI ZHIQING PACKAGING MATERIALS CO LTD
- Filing Date
- 2025-07-22
- Publication Date
- 2026-06-19
AI Technical Summary
Existing automatic edge-folding and sealing equipment requires manual adjustment of the positioning sleeves on both sides after film replacement, resulting in low efficiency.
The film roll is precisely positioned axially by using a ring plate and a first electric push rod in conjunction with a positioning sleeve. The film roll position can be adjusted by simply adjusting one positioning sleeve.
It simplifies the film changing process, reduces the operational difficulty for staff, and improves the efficiency of equipment use.
Smart Images

Figure CN224376071U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cardboard box technology, specifically to an automatic cardboard box folding and sealing device. Background Technology
[0002] Cardboard boxes are widely used packaging products, made primarily of paper. They are categorized into corrugated cardboard boxes and single-layer cardboard boxes, with common three- or five-layer structures. Corrugated flutes include types A, C, B, and E. They are low-cost, lightweight, and easy to process into various shapes, suitable for packaging different products. They offer excellent protection, providing cushioning and pressure resistance to prevent damage during transportation and storage. Furthermore, they are recyclable, aligning with environmental protection principles. They are widely used in logistics, sales, and warehousing management, playing a vital role in containing, protecting, and beautifying products.
[0003] Currently, when using cardboard boxes to seal items, the boxes need to be sealed. Automatic edge-folding and sealing equipment is used to seal the boxes. However, after using the automatic edge-folding and sealing equipment for a period of time, the film needs to be replaced. After the film is loaded, the adjustable positioning sleeves on both sides need to be adjusted to center the film position. Adjusting the two positioning sleeves is quite troublesome and affects the efficiency of the equipment. Utility Model Content
[0004] (a) Technical problems to be solved
[0005] To address the shortcomings of existing technologies, this utility model provides an automatic carton folding and sealing device. It solves the problem that after using the automatic folding and sealing device for a period of time, it is necessary to replace the film roll. After the film roll is loaded, the adjustable positioning sleeves on both sides need to be adjusted to center the film roll position. This adjustment of the two positioning sleeves is cumbersome and affects the efficiency of the device.
[0006] (II) Technical Solution
[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic carton folding and sealing device, comprising a conveying component, an mounting plate fixedly mounted on the upper surface of the conveying component, an mounting frame mounted on the lower end of the mounting plate, and a rectangular plate fixedly mounted on the right end of the upper surface of the mounting frame;
[0008] An auxiliary installation mechanism is set on the rectangular plate. The auxiliary installation mechanism includes an installation rod and a connecting plate. Two first electric push rods are fixedly installed on the front surface of the rectangular plate. The installation rod is slidably installed on the rear surface of the rectangular plate. The front end of the installation rod slides through to the front end of the rectangular plate. The connecting plate is fixedly installed on the telescopic end of the two first electric push rods. The connecting plate is fixedly connected to the installation rod. A positioning sleeve is threaded on the rear end of the installation rod.
[0009] Preferably, the auxiliary installation mechanism further includes an annular plate, which is fixedly installed on the outer surface of the installation rod and is located in front of the positioning sleeve.
[0010] Preferably, guide plates are slidably mounted on both the front and rear ends of the upper surface of the conveying assembly, and second electric push rods are fixedly mounted on both the front and rear surfaces of the mounting plate. The proximal ends of the two second electric push rods slide through into the interior of the mounting plate, and the two second electric push rods are fixedly connected to the two guide plates respectively.
[0011] Preferably, a folding edge assembly is installed on the left end of the upper surface of the mounting frame, and a folding edge plate is fixedly installed on the left end of the lower surface of the mounting frame.
[0012] Preferably, two cylinders are fixedly installed on the upper surface of the mounting plate, and the telescopic ends of the two cylinders slide through into the interior of the mounting plate. Both cylinders are fixedly connected to the mounting frame. Rectangular grooves are provided on the front and rear inner walls of the mounting plate, and the mounting frame is slidably connected to the interior of the two rectangular grooves.
[0013] Preferably, the mounting bracket has folded edge rods fixedly installed on both the front and rear surfaces.
[0014] (III) Beneficial Effects
[0015] Compared with the prior art, this utility model provides an automatic carton folding and sealing device, which has the following advantages:
[0016] 1. This automatic carton folding and sealing equipment uses a ring plate as the front fixed reference, a single positioning sleeve to fix the back of the film roll, and two first electric push rods to drive the film roll to move back and forth, accurately adjusting the position of the film roll. Only one positioning sleeve needs to be adjusted to achieve axial positioning of the film roll. There is no need for the staff to manually adjust the positioning sleeves on both sides, which reduces the difficulty of changing the film roll, saves the change time, and improves the efficiency of the equipment. Attached Figure Description
[0017] Figure 1 This is a top view schematic diagram of the overall structure of the automatic carton folding and sealing equipment of this utility model;
[0018] Figure 2 This is a front view of the internal cross-section structure of the automatic carton folding and sealing equipment of this utility model;
[0019] Figure 3 This is a schematic cross-sectional view of the rectangular plate structure of this utility model;
[0020] Figure 4 This is a schematic diagram of the internal cross-sectional side view of the rectangular plate of this utility model.
[0021] In the diagram: 1. Conveying assembly; 2. Mounting plate; 3. Mounting bracket; 4. Rectangular plate; 5. Mounting rod; 6. Connecting plate; 7. First electric push rod; 8. Positioning sleeve; 9. Annular plate; 10. Guide plate; 11. Second electric push rod; 12. Folding assembly; 13. Folding plate; 14. Cylinder; 15. Rectangular groove; 16. Folding rod. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4 This utility model provides a new technical solution: an automatic carton folding and sealing device, including a conveying component 1, an mounting plate 2 fixedly installed on the upper surface of the conveying component 1, an mounting frame 3 installed at the lower end of the mounting plate 2, and a rectangular plate 4 fixedly installed on the right end of the upper surface of the mounting frame 3.
[0024] An auxiliary installation mechanism is set on a rectangular plate 4. The auxiliary installation mechanism includes an installation rod 5 and a connecting plate 6. Two first electric push rods 7 are fixedly installed on the front surface of the rectangular plate 4. The installation rod 5 is slidably installed on the rear surface of the rectangular plate 4. The front end of the installation rod 5 slides through to the front end of the rectangular plate 4. The connecting plate 6 is fixedly installed on the telescopic ends of the two first electric push rods 7. The connecting plate 6 is fixedly connected to the installation rod 5. A positioning sleeve 8 is threadedly installed on the rear end of the installation rod 5.
[0025] Furthermore, the auxiliary installation mechanism also includes an annular plate 9, which is fixedly installed on the outer surface of the mounting rod 5 and is located in front of the positioning sleeve 8.
[0026] Furthermore, by using the annular plate 9 as the front fixed reference, and cooperating with the single positioning sleeve 8 to fix the rear side of the film, and the two first electric push rods 7 to drive the film to move back and forth, the film position can be precisely adjusted. Only one positioning sleeve needs to be adjusted to achieve the axial positioning of the film. There is no need for the staff to manually adjust the positioning sleeves on both sides, which reduces the difficulty of film replacement for the staff, saves replacement time, and improves the efficiency of equipment use.
[0027] Furthermore, guide plates 10 are slidably installed on both the front and rear ends of the upper surface of the conveying assembly 1, and second electric push rods 11 are fixedly installed on both the front and rear surfaces of the mounting plate 2. The near ends of the two second electric push rods 11 are slidably inserted into the interior of the mounting plate 2, and the two second electric push rods 11 are fixedly connected to the two guide plates 10 respectively.
[0028] Furthermore, a folding assembly 12 is installed on the left end of the upper surface of the mounting bracket 3, and a folding plate 13 is fixedly installed on the left end of the lower surface of the mounting bracket 3.
[0029] Furthermore, two cylinders 14 are fixedly installed on the upper surface of the mounting plate 2. The telescopic ends of the two cylinders 14 slide through into the interior of the mounting plate 2. Both cylinders 14 are fixedly connected to the mounting bracket 3. Rectangular grooves 15 are provided on the front and rear inner walls of the mounting plate 2. The mounting bracket 3 is slidably connected to the interior of the two rectangular grooves 15.
[0030] Furthermore, folded rods 16 are fixedly installed on both the front and rear surfaces of the mounting bracket 3.
[0031] Furthermore, when using this equipment, the conveyor assembly 1 is activated, and the carton is transported to the sealing station by the conveyor belt. Based on the carton width, the second electric push rod 11 on the mounting plate 2 extends and retracts, causing the front and rear guide plates 10 to slide, centering the carton and preventing it from shifting. The cylinder 14 on the mounting plate 2 extends and retracts, causing the mounting frame 3 to slide up and down along the rectangular groove 15, adjusting the height of the mounting frame 3 to fit the carton size. When the carton reaches the left folding area, the folding assembly 12 on the mounting frame 3 is activated: the folding electric push rod in the folding assembly 12 extends and retracts, causing the lower end of the folding plate to rotate up and down, cooperating with the lower fixed folding plate 13 to complete the folding of the left and right ends of the carton. Simultaneously, the folding rods 16 on the front and rear surfaces of the mounting frame 3 assist in folding the sides of the carton. The folded carton continues to be conveyed to the sealing station on the right. The pressure roller assembly applies tape to the carton seams, completing the application as the carton moves forward. Finally, the cutting assembly cuts the tape to complete the sealing. When the film needs to be replaced, remove the positioning sleeve 8 on the mounting rod 5, remove the remaining old film, and put the new film onto the mounting rod 5 so that it fits against the annular plate 9. Simply rotate the positioning sleeve 8 at the rear end of the mounting rod 5 to make it fit tightly against the back of the film. At this time, the two first electric push rods 7 can be activated to move the mounting rod 5 back and forth to adjust the position of the film. There is no need for the staff to manually adjust the positioning sleeves on both sides.
[0032] Structural Description: Conveying Component 1: As the conveying foundation of the equipment, it can stably transport cartons to various processing stations. It is the power carrier for the cartons to move through the folding, sealing and other stages, ensuring that the entire sealing process is carried out in an orderly manner;
[0033] Mounting plate 2: Fixed on the conveying assembly 1, it provides mounting support for components such as mounting frame 3, cylinder 14, and second electric push rod 11, and serves as the connection basis for each component, maintaining the stability of the equipment structure.
[0034] Mounting bracket 3: Installed at the lower end of mounting plate 2, it supports the folding assembly 12, folding plate 13, folding rod 16 and sealing components. Its height can be adjusted by cylinder 14 to adapt to different cartons.
[0035] Rectangular plate 4: Fixed to the right end of mounting frame 3, it serves as the mounting carrier for the auxiliary mounting mechanism, providing support for mounting rod 5, first electric push rod 7, etc., and ensuring the stability of the film mounting structure;
[0036] Mounting rod 5: Slidably mounted on rectangular plate 4, used to mount film rolls. Moves back and forth under the drive of the first electric push rod 7 to adjust the position of the film rolls. It is the core component for film roll mounting.
[0037] Connecting plate 6: Connects the first electric push rod 7 and the mounting rod 5, transmits the power of the first electric push rod 7 to the mounting rod 5, realizes the back-and-forth sliding of the mounting rod 5, and ensures stable power transmission;
[0038] First electric push rod 7: There are two of them, which are fixed on the front surface of rectangular plate 4. They move the connecting plate 6 and the mounting rod 5 back and forth by telescopic movement, so as to accurately adjust the front and back position of the film roll and ensure accurate tape application.
[0039] Positioning sleeve 8: It is threaded onto the rear end of the mounting rod 5 and cooperates with the annular plate 9 to fix the film roll. By tightening it to press against the rear side of the film roll, the film roll is axially positioned to prevent it from shifting to the left or right.
[0040] Ring plate 9: Fixed on the mounting rod 5 and located in front of the positioning sleeve 8, serving as a positioning reference for the front of the film roll, and working with the positioning sleeve 8 to quickly complete the centering of the film roll, simplifying installation and adjustment;
[0041] Guide plate 10: There are two in total. They are slidably installed at the front and rear ends of the conveying assembly 1. The spacing is adjusted under the drive of the second electric push rod 11 to center the carton and prevent it from deviating during the conveying process.
[0042] The second electric push rod 11: There are two in total. They are installed on the front and rear surfaces of the mounting plate 2. When they extend or retract, they drive the guide plate 10 to slide. The spacing of the guide plates 10 is adjusted according to the width of the carton to ensure that the carton is conveyed in the center.
[0043] Folding assembly 12: includes an electric folding push rod, a connecting frame and a folding plate. The electric folding push rod drives the folding plate to rotate, and together with the folding plate 13, completes the folding of the left end of the carton.
[0044] Folding plate 13: Fixed to the left end of the lower surface of the mounting frame 3, and cooperates with the folding plate of the folding assembly 12 to fold the left and right end panels of the carton.
[0045] Cylinder 14: There are two cylinders in total. They are installed on the upper surface of the mounting plate 2. The telescopic end is connected to the mounting frame 3, which drives the mounting frame 3 to slide up and down along the rectangular groove 15. The height of the mounting frame 3 is adjusted to fit the size of the carton.
[0046] Rectangular groove 15: There are two in total, which are opened on the front and rear inner walls of the mounting plate 2 to allow the mounting frame 3 to slide. They guide and limit the up and down movement of the mounting frame 3 to ensure its smooth and precise movement.
[0047] Folding rod 16: Two rods are provided and fixed on the front and rear surfaces of the mounting frame 3. They assist in folding the side panels during carton conveying to make the carton lid flat and prepare for subsequent sealing.
[0048] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic carton folding and sealing device, comprising a conveying assembly (1), wherein an mounting plate (2) is fixedly mounted on the upper surface of the conveying assembly (1), and a mounting bracket (3) is mounted on the lower end of the mounting plate (2), characterized in that: A rectangular plate (4) is fixedly installed on the right end of the upper surface of the mounting bracket (3); An auxiliary installation mechanism is set on a rectangular plate (4). The auxiliary installation mechanism includes an installation rod (5) and a connecting plate (6). Two first electric push rods (7) are fixedly installed on the front surface of the rectangular plate (4). The installation rod (5) is slidably installed on the rear surface of the rectangular plate (4). The front end of the installation rod (5) slides through to the front end of the rectangular plate (4). The connecting plate (6) is fixedly installed on the telescopic ends of the two first electric push rods (7). The connecting plate (6) is fixedly connected to the installation rod (5). The rear end of the installation rod (5) is threaded with a positioning sleeve (8).
2. The automatic folding and sealing equipment for cardboard boxes according to claim 1, characterized in that: The auxiliary installation mechanism also includes an annular plate (9), which is fixedly installed on the outer surface of the mounting rod (5) and is located in front of the positioning sleeve (8).
3. The automatic folding and sealing equipment for cardboard boxes according to claim 1, characterized in that: Guide plates (10) are slidably installed on both the front and rear ends of the upper surface of the conveying assembly (1), and second electric push rods (11) are fixedly installed on both the front and rear surfaces of the mounting plate (2). The near ends of the two second electric push rods (11) slide through into the interior of the mounting plate (2), and the two second electric push rods (11) are fixedly connected to the two guide plates (10) respectively.
4. The automatic folding and sealing equipment for cardboard boxes according to claim 1, characterized in that: A folding assembly (12) is installed on the left end of the upper surface of the mounting bracket (3), and a folding plate (13) is fixedly installed on the left end of the lower surface of the mounting bracket (3).
5. The automatic folding and sealing equipment for cardboard boxes according to claim 1, characterized in that: Two cylinders (14) are fixedly installed on the upper surface of the mounting plate (2). The telescopic ends of the two cylinders (14) slide through into the interior of the mounting plate (2). The two cylinders (14) are fixedly connected to the mounting bracket (3). Rectangular grooves (15) are provided on the front and rear inner walls of the mounting plate (2). The mounting bracket (3) is slidably connected to the interior of the two rectangular grooves (15).
6. The automatic folding and sealing equipment for cardboard boxes according to claim 1, characterized in that: The mounting bracket (3) has folded rods (16) fixedly installed on both the front and rear surfaces.