Automatic opening and closing mechanism of injection molding machine cartoning paper box
By designing an automatic opening and closing mechanism for cartons in injection molding machines, components such as cylinders, suction cups, and synchronous belts are used to achieve automatic opening and closing of cartons and quantitative feeding, solving the problem of low efficiency in manual operation and improving production efficiency and the stability of the packaging process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU HUIDI INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-27
- Publication Date
- 2026-06-23
AI Technical Summary
In existing technologies, the opening and closing of cartons in injection molding machines relies on manual operation, resulting in low production efficiency, difficulty in meeting the needs of high-speed production lines, and easy damage to the cartons or incomplete opening, which affects the smoothness of the packaging process.
An automatic opening and closing mechanism for cartons in injection molding machines was designed. The mechanism utilizes components such as cylinders, suction cups, synchronous belts, and electric push rods to achieve automatic opening and closing of cartons and quantitative feeding. The cylinders drive the connecting blocks to move, the suction cups adsorb the cartons, the synchronous belts control the feeding, and the electric push rods press the cartons together, ensuring fast and accurate opening and closing and feeding of the cartons.
It improves the automation level of carton opening and closing, enhances production efficiency, avoids carton damage and inconsistency caused by manual operation, and ensures a smooth and efficient packaging process.
Smart Images

Figure CN224393131U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mechanical engineering, and in particular to an automatic opening and closing mechanism for carton packing in injection molding machines. Background Technology
[0002] In the injection molding production process, automatic carton opening and closing machines significantly improve production efficiency. The machine opens and closes quickly and accurately, far exceeding manual methods, allowing injection-molded products to quickly enter the cartoning stage. Secondly, it ensures stable packaging quality, avoiding dimensional deviations and damage caused by manual opening and closing, ensuring the carton fits the product perfectly. Thirdly, it reduces labor costs, freeing workers from repetitive tasks and allowing them to focus on more valuable processes, thus enhancing the company's competitiveness.
[0003] The opening and closing of cartons for injection molding machines has specific applications in the production and packaging process. When products produced by the injection molding machine need to be packed, workers manually unfold and shape the folded cartons to accommodate the products. This process typically takes place alongside the packaging production line, with workers opening and closing the cartons one by one according to the production rhythm to ensure they are ready for loading, preparing for the rapid packing of subsequent products and ensuring a smooth and efficient packaging process.
[0004] In existing technologies, the opening and closing of some injection molding machine cartons is done manually during the production and packaging process. However, the speed of manual opening and closing is limited, which is difficult to meet the packaging needs of high-speed production lines. This can easily cause production bottlenecks, reduce overall production efficiency, and lead to inconsistent carton forming results. It can even cause the cartons to be damaged or not fully opened, affecting the smoothness of the packaging process. Therefore, an automatic opening and closing mechanism for injection molding machine cartons is proposed to solve the above problems. Utility Model Content
[0005] To overcome the above shortcomings, this utility model provides an automatic opening and closing mechanism for cartons in injection molding machines, which aims to improve the problem that manual opening and closing in the prior art is slow, inefficient, and can also damage the carton.
[0006] To achieve the above objectives, the present invention adopts the following technical solution:
[0007] An automatic opening and closing mechanism for carton packaging in an injection molding machine includes a mounting platform. A rotating rod is fixedly connected to the inner wall of the mounting platform. A control rod is rotatably connected to the outer wall of the rotating rod. A connecting block is rotatably connected to the bottom end of the control rod. A cylinder is fixedly connected to the outer wall of the connecting block. Another connecting block is fixedly connected to the other end of the cylinder. A rotating column is fixedly connected to the top of the control rod. A long rod is rotatably connected to the outer wall of the rotating column. A connecting plate is fixedly connected to the other end of the long rod. A quantitative feeding component is installed on the top of the mounting platform.
[0008] As a further description of the above technical solution:
[0009] The quantitative feeding assembly includes a synchronous roller, which is rotatably connected to the top of the mounting platform. A synchronous motor is fixedly connected to the top of the synchronous roller, and a synchronous belt is coupled to the outer wall of the synchronous roller.
[0010] As a further description of the above technical solution:
[0011] A storage box is fixedly connected to the top of the mounting platform, and a sliding groove is provided on the outer wall of the storage box;
[0012] As a further description of the above technical solution:
[0013] A control block is fixedly connected to the outer wall of the synchronous belt, the outer wall of the control block is slidably connected to the inner wall of the slide groove, and a suction cup is fixedly connected to the outer wall of the connecting plate.
[0014] As a further description of the above technical solution:
[0015] An electric push rod is fixedly connected to the top of the mounting platform, and a pressure plate is fixedly connected to the drive end of the electric push rod. Multiple unopened cartons are placed on the inner wall of the storage box, and a conveyor belt is installed on the top of the mounting platform.
[0016] As a further description of the above technical solution:
[0017] The control block contacts one side of one of the unopened cartons, and the outer wall of the pressure plate contacts the outer wall of one of the unopened cartons.
[0018] As a further description of the above technical solution:
[0019] The suction cup is fixedly connected to the inner wall of the suction cup and the conveyor belt is fixedly connected to the outer wall of the conveyor belt.
[0020] As a further description of the above technical solution:
[0021] The other end of the suction pipe is fixedly connected to an air pump, the outer wall of the air pump is fixedly connected to the side wall of the mounting platform, an opened and closed carton is placed on the top of the conveyor belt, and the outer wall of the suction cup is in contact with the side wall of the opened and closed carton.
[0022] This utility model has the following beneficial effects:
[0023] 1. In this utility model, the cylinder is activated, which drives the connecting blocks on both sides to move in opposite directions. The opposite movement of the two connecting blocks causes a part of the control rod to move towards the outer wall of the mounting platform. The movement of the top of the control rod causes the long rod and the connecting plate to move towards the inner side of the mounting platform at the same time, so that the suction cup contacts the inner wall of the unopened carton. At this time, the air pump is activated, and the air pump sucks the two outer walls of the unopened carton through the suction pipe. Then the cylinder is activated again, so that the connecting plate drives the suction cup to move in the opposite direction, thereby opening the unopened carton into an opened carton, thus improving work efficiency.
[0024] 2. In this utility model, the electric push rod is started, which pushes the pressure plate to the outer wall of the unopened carton. Then, the synchronous motor is started, which drives the synchronous roller to rotate. The rotation of the synchronous roller causes the synchronous belt to rotate. The rotation of the synchronous belt causes the control block to slide on the inner wall of the slide groove and contact the unopened carton. Thus, the unopened carton can be pushed out by the control block to the inner wall of the storage box to complete the unloading. Each rotation of the synchronous belt completes one unloading operation. Attached Figure Description
[0025] Figure 1 This is a three-dimensional schematic diagram of the automatic opening and closing mechanism for injection molding machine carton packaging proposed in this utility model;
[0026] Figure 2 This is a schematic diagram of the synchronous belt of the automatic opening and closing mechanism for injection molding machine cartons proposed in this utility model.
[0027] Figure 3 This is a schematic diagram of the control lever of the automatic opening and closing mechanism for the packing carton of the injection molding machine proposed in this utility model;
[0028] Figure 4 This is a schematic diagram of the control block of the automatic opening and closing mechanism for the injection molding machine carton proposed in this utility model.
[0029] Legend:
[0030] 1. Mounting platform; 2. Conveyor belt; 3. Conveyor motor; 4. Cylinder; 5. Connecting block; 6. Control lever; 7. Rotating rod; 8. Rotating column; 9. Long rod; 10. Connecting plate; 11. Suction cup; 12. Air pump; 13. Suction pipe; 14. Electric push rod; 15. Storage bin; 16. Pressure plate; 17. Unopened carton; 18. Synchronous belt; 19. Synchronous motor; 20. Synchronous roller; 21. Slide chute; 22. Control block; 23. Opened carton. Detailed Implementation
[0031] 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.
[0032] Reference Figures 1 to 3 This utility model provides an embodiment of an automatic opening and closing mechanism for injection molding machine carton packaging, including a mounting platform 1. The mounting platform 1 serves to support and fix other components, providing a stable mounting foundation for the entire opening and closing mechanism. A rotating rod 7 is fixedly connected to the inner wall of the mounting platform 1. The rotating rod 7, fixed to the inner wall of the mounting platform 1, provides a support point for the subsequent rotation of the control rod 6, allowing the control rod 6 to rotate around it. The control rod 6 is rotatably connected to the outer wall of the rotating rod 7, allowing the control rod 6 to rotate flexibly on the outer wall of the rotating rod 7, thereby controlling other components. A connecting block 5 is rotatably connected to the bottom end of the control rod 6. The rotatable connection between the connecting block 5 and the control rod 6 allows the connecting block 5 to move with the rotation of the control rod 6, thereby transmitting power. A cylinder 4 is fixedly connected to the outer wall of the connecting block 5. The cylinder 4 serves as a power source, capable of driving the movement of the connecting block 5 through telescopic movement.
[0033] Another connecting block 5 is fixedly connected to the other end of the cylinder 4. The other connecting block 5 is also connected to the cylinder 4 and can move under the drive of the cylinder 4, thereby driving the connected parts to move. A rotating column 8 is fixedly connected to the top of the control rod 6. The rotating column 8 is fixed to the top of the control rod 6 and provides a connection point for the rotation of the long rod 9, so that the long rod 9 can rotate around it. The long rod 9 is rotatably connected to the outer wall of the rotating column 8. The long rod 9 can rotate flexibly on the outer wall of the rotating column 8. Through rotation, the power transmission and motion control between it and the control rod 6 are realized. A connecting plate 10 is fixedly connected to the other end of the long rod 9. The connecting plate 10 is connected to the long rod 9 and can move under the drive of the long rod 9, thereby driving the suction cup 11 to perform corresponding actions. A quantitative feeding component is installed on the top of the mounting platform 1. The quantitative feeding component can realize the quantitative feeding of the unopened carton 17, ensuring the accuracy and stability of the feeding.
[0034] A suction pipe 13 is fixedly connected to the inner wall of the suction cup 11. The suction pipe 13 is connected to the suction cup 11 and can transmit the suction force generated by the air pump 12 to the suction cup 11, enabling the suction cup 11 to adhere to the cardboard box. A conveyor motor 3 is fixedly connected to the outer wall of the conveyor belt 2. The conveyor motor 3 provides power for the rotation of the conveyor belt 2, enabling the conveyor belt 2 to transport the cardboard box. The other end of the suction pipe 13 is fixedly connected to the air pump 12. The air pump 12 can generate suction force, which is transmitted to the suction cup 11 through the suction pipe 13 to achieve the adsorption of the cardboard box. The outer wall of the pump 12 is fixedly connected to the side wall of the mounting platform 1. The air pump 12 is fixed to the side wall of the mounting platform 1 to ensure its stability and facilitate the connection with the suction pipe 13. The top of the conveyor belt 2 is placed with an opened and closed carton 23. The opened and closed carton 23 is placed on the conveyor belt 2 and the subsequent operation is carried out by the conveyor belt 2. The outer wall of the suction cup 11 is in contact with the side wall of the opened and closed carton 23. The suction cup 11 is in contact with the side wall of the opened and closed carton 23. Under the action of the air pump 12, it can suck up the carton so as to perform the opening and closing operation.
[0035] Reference Figures 2 to 4 The quantitative feeding component includes a synchronous roller 20, which is an important part of the quantitative feeding component. It can rotate under the drive of the synchronous motor 19 to control the carton. The synchronous roller 20 is rotatably connected to the top of the mounting platform 1. The synchronous roller 20 is rotatably connected to the top of the mounting platform 1, which ensures that it can rotate flexibly and provides stable support. The synchronous motor 19 is fixedly connected to the top of the synchronous roller 20. The synchronous motor 19 provides power for the rotation of the synchronous roller 20, so that the synchronous roller 20 can rotate at a set speed and direction. The synchronous belt 18 is coupled to the outer wall of the synchronous roller 20. The synchronous belt 18 is connected to the synchronous roller 20 and can rotate under the drive of the synchronous roller 20, thereby driving the control block 22.
[0036] A storage box 15 is fixedly connected to the top of the mounting platform 1. The storage box 15 is used to store multiple unopened cartons 17, providing storage space for quantitative feeding. A slide groove 21 is opened on the outer wall of the storage box 15. The slide groove 21 provides a track for the sliding of the control block 22, so that the control block 22 can slide accurately on the outer wall of the storage box 15. The control block 22 is fixedly connected to the outer wall of the synchronous belt 18. The control block 22 is connected to the synchronous belt 18 and can slide in the slide groove 21 under the drive of the synchronous belt 18, thereby realizing the push-out and feeding control of the unopened cartons 17. The outer wall of the control block 22 is slidably connected to the inner wall of the slide groove 21. The control block 22 slides on the inner wall of the slide groove 21, ensuring the accuracy and stability of its movement. A suction cup 11 is fixedly connected to the outer wall of the connecting plate 10. The suction cup 11 is connected to the connecting plate 10 and can move under the drive of the connecting plate 10. At the same time, it can suck up the cartons under the action of the air pump 12.
[0037] An electric push rod 14 is fixedly connected to the top of the mounting platform 1. The electric push rod 14 can push the pressure plate 16 when needed to press and control the unopened carton 17. The driving end of the electric push rod 14 is fixedly connected to the pressure plate 16. The pressure plate 16 is connected to the driving end of the electric push rod 14 and can contact the unopened carton 17 under the push of the electric push rod 14 to press or release the carton. Multiple unopened cartons 17 are placed on the inner wall of the storage box 15, which provides a material source for quantitative feeding. A conveyor belt 2 is installed on the top of the mounting platform 1. The conveyor belt 2 is used to transport cartons, conveying the opened cartons 23 or the closed cartons 17 to the corresponding positions. The control block 22 is in contact with one side of one of the closed cartons 17. The control block 22 is in contact with the closed cartons 17 and can push the closed cartons 17 out of the storage box 15 under the drive of the synchronous belt 18 to realize the unloading operation. The outer wall of the pressure plate 16 is in contact with the outer wall of one of the closed cartons 17. The pressure plate 16 is in contact with the outer wall of the closed cartons 17 and can press the closed cartons 17 under the action of the electric push rod 14 to prevent them from moving or falling in the storage box 15.
[0038] Working principle: When the opening and closing mechanism is needed to transform an unopened carton 17 into an opened carton 23, the unopened carton 17 is first fed onto the surface of the conveyor belt 2. Then, the cylinder 4 is activated, which drives the connecting blocks 5 on both sides to move in opposite directions. The opposite movement of the two connecting blocks 5 causes one part of the control rod 6 to move towards the outer wall of the mounting platform 1. Then, due to the restriction of the rotating rod 7, the top of the control rod 6 moves towards the inner wall of the mounting platform 1. The movement of the top of the control rod 6 drives the long rod 9 and the connecting plate 10 to move towards the inner side of the mounting platform 1, so that the suction cup 11 contacts the inner wall of the unopened carton 17. At this time, the air pump 12 is activated, and the air pump 12 sucks the two outer walls of the unopened carton 17 through the suction pipe 13. Then, the cylinder 4 is activated again, which causes the connecting plate 10 to drive the suction cup 11 to move in the opposite direction, so that the unopened carton 17 opens and becomes the opened carton 23.
[0039] When it is necessary to quantitatively feed unopened cartons 17, multiple unopened cartons 17 are placed into the inner wall of the storage bin 15. Then, the electric push rod 14 is started, which pushes the pressure plate 16 to the outer wall of the unopened cartons 17. Then, the synchronous motor 19 is started, which drives the synchronous roller 20 to rotate. The rotation of the synchronous roller 20 causes the synchronous belt 18 to rotate. The rotation of the synchronous belt 18 causes the control block 22 to slide on the inner wall of the slide chute 21 and contact the unopened cartons 17. Thus, the unopened cartons 17 can be pushed out by the control block 22 to the inner wall of the storage bin 15 to complete the feeding. Each rotation of the synchronous belt 18 completes one feeding.
[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. An automatic opening and closing mechanism of a carton for a carton loading machine of an injection molding machine, comprising a mounting table (1), characterized in that: A rotating rod (7) is fixedly connected to the inner wall of the mounting platform (1). A control rod (6) is rotatably connected to the outer wall of the rotating rod (7). A connecting block (5) is rotatably connected to the bottom end of the control rod (6). A cylinder (4) is fixedly connected to the outer wall of the connecting block (5). Another connecting block (5) is fixedly connected to the other end of the cylinder (4). A rotating column (8) is fixedly connected to the top of the control rod (6). A long rod (9) is rotatably connected to the outer wall of the rotating column (8). A connecting plate (10) is fixedly connected to the other end of the long rod (9). A quantitative feeding assembly is installed on the top of the mounting platform (1).
2. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 1, characterized in that: The quantitative feeding assembly includes a synchronous roller (20), which is rotatably connected to the top of the mounting platform (1). A synchronous motor (19) is fixedly connected to the top of the synchronous roller (20), and a synchronous belt (18) is coupled to the outer wall of the synchronous roller (20).
3. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 2, characterized in that: The top of the mounting platform (1) is fixedly connected to a storage box (15), and the outer wall of the storage box (15) is provided with a sliding groove (21).
4. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 3, characterized in that: The outer wall of the synchronous belt (18) is fixedly connected to a control block (22), the outer wall of the control block (22) is slidably connected to the inner wall of the slide groove (21), and the outer wall of the connecting plate (10) is fixedly connected to a suction cup (11).
5. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 4, characterized in that: An electric push rod (14) is fixedly connected to the top of the mounting platform (1), and a pressure plate (16) is fixedly connected to the drive end of the electric push rod (14). Multiple unopened cartons (17) are placed on the inner wall of the storage box (15), and a conveyor belt (2) is provided on the top of the mounting platform (1).
6. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 5, characterized in that: The control block (22) is in contact with one side of one of the unopened cartons (17), and the outer wall of the pressure plate (16) is in contact with the outer wall of one of the unopened cartons (17).
7. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 5, characterized in that: The suction cup (11) is fixedly connected to the inner wall of the suction pipe (13), and the conveyor belt (2) is fixedly connected to the outer wall of the conveyor motor (3).
8. The automatic opening and closing mechanism for injection molding machine carton packaging according to claim 7, characterized in that: The other end of the suction pipe (13) is fixedly connected to an air pump (12), the outer wall of the air pump (12) is fixedly connected to the side wall of the mounting platform (1), an opened and closed carton (23) is placed on the top of the conveyor belt (2), and the outer wall of the suction cup (11) is in contact with the side wall of the opened and closed carton (23).