Falling bag turnover mechanism
By using a rotating receiving rack and pusher plate structure in the plastic bag manufacturing process, the problems of unsightly folded ends and difficulty in counting plastic bags are solved. This enables the vertical position of the plastic bag to be swapped and centered, improving both aesthetics and processing efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2026-04-07
AI Technical Summary
During the manufacturing process of plastic bags, folding and turning the ends over makes them unsightly and hinders quick quantity counting. It is also necessary to ensure that the bags are centered for easy subsequent processing.
The system uses a rotating receiving rack to receive plastic bags and discharge them through a discharge plate. Combined with a pusher plate structure and a rotating drive mechanism, it achieves vertical position adjustment and centering, improving aesthetics and stacking success rate.
This technology enables the top and bottom positions of plastic bags to be interchanged and centered, improving aesthetics, increasing the success rate of subsequent mechanical processing, and simplifying the production process.
Smart Images

Figure CN224090536U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of plastic bag manufacturing technology, and in particular to a bag dropping and flipping mechanism. Background Technology
[0002] Before being packaged, plastic bags need to be folded. Before the plastic bag folding mechanism releases the plastic bag, it is folded downwards from the middle. After folding, the packaged plastic bags have two folded ends on the top and only one folded end on the bottom. The two folded ends facing upwards are not aesthetically pleasing and are not conducive to quickly counting the number of packaged plastic bags. In addition, since the plastic bags need to be grasped and packaged later, it is also necessary to ensure that the plastic bags are in the center position for easy sorting, grasping and packing. Utility Model Content
[0003] The technical problem to be solved by this utility model is to address the above-mentioned technical deficiencies by providing a bag-dropping and flipping mechanism. This mechanism uses a rotating receiving rack to receive plastic bags falling from above and then discharge them along the discharge plate, thereby achieving the reversal of the vertical position of the plastic bags. At the same time, the structure is simple, highly integrated, and improves the aesthetics of the plastic bags. Furthermore, by integrating a pusher plate structure on the receiving rack, the centering of the plastic bags is ensured while receiving and discharging them, which improves the success rate of subsequent mechanical processing and stacking of plastic bags, and also improves the aesthetics of the stacked plastic bags.
[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a plastic bag folding mechanism and a plastic bag holding plate are provided on the frame, including a receiving rack; the receiving rack is located below the plastic bag folding mechanism; the receiving rack is also located above the plastic bag holding plate; the receiving rack is provided with an opening for receiving and discharging plastic bags; the receiving rack is rotated and positioned facing the plastic bag holding plate; a discharge plate is provided on the side of the receiving rack near the plastic bag holding plate; when the plastic bag is discharged from the receiving rack, it slides outward along the discharge plate from the receiving rack.
[0005] To further optimize this technical solution, push plates are also provided on both sides of the receiving rack; and a push plate drive mechanism is used to drive the push plates on both sides to move in opposite directions.
[0006] To further optimize this technical solution, the receiving rack is mounted on the machine frame, the receiving rack is rotatably connected to the machine frame, and a rotation drive mechanism is installed between the receiving rack and the machine frame.
[0007] To further optimize this technical solution, the rotation drive mechanism is a drive motor, and the output end of the motor is connected to the receiving frame.
[0008] To further optimize this technical solution, the rotation drive mechanism is a push cylinder set between the receiving rack and the machine frame.
[0009] To further optimize this technical solution, the push plate driving mechanism is a circulating belt mechanism driven by a motor on the back of the receiving frame; the push plates on both sides are respectively connected to the upper and lower sides of the circulating belt.
[0010] To further optimize this technical solution, the discharge plate is provided with upward-opening slits at intervals, and the plastic bag holding plate is provided with reciprocating fork plates corresponding to the slits, which are used to push the plastic bags that slide out of the discharge plate onto the plastic bag holding plate.
[0011] Compared with the prior art, this utility model has the following advantages: 1. The rotating receiving rack receives the plastic bags falling from the top and then discharges them along the discharge plate. This structure effectively ensures the interchange of the upper and lower positions of the plastic bags. At the same time, the structure is simple, highly integrated, and improves the aesthetics of the plastic bags. 2. Furthermore, by integrating a push plate structure on the receiving rack, this structure effectively ensures the centering of the plastic bags while receiving and discharging them, improving the success rate of subsequent mechanical processing and stacking of plastic bags, and also improving the aesthetics of the stacked plastic bags. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of a folded plastic bag structure with a bag-dropping and flipping mechanism.
[0013] Figure 2 This is a schematic diagram of the overall structure of a bag-dropping and flipping mechanism.
[0014] Figure 3 This is a schematic diagram of the front structure of a receiving rack for a bag-dropping and flipping mechanism.
[0015] Figure 4 This is a schematic diagram of the back structure of a receiving rack for a bag-dropping and flipping mechanism.
[0016] Figure 5 This is a partial structural diagram of a bag-dropping and flipping mechanism.
[0017] In the diagram: 1. Plastic bag folding mechanism; 2. Plastic bag holding plate; 3. Receiving rack; 4. Discharge plate; 5. Push plate; 6. Frame; 7. Rotation drive mechanism; 8. Push cylinder; 9. Circulating belt mechanism; 10. Folding end; 11. Gap; 12. Fork plate. Detailed Implementation
[0018] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this utility model. Furthermore, descriptions of well-known structures and technologies are omitted in the following description to avoid unnecessarily obscuring the concept of this utility model. Detailed Implementation Example 1
[0020] Combination Figure 1-5 As shown,
[0021] Plastic bags are shaped like Figure 1 As shown, in the plastic bag folding mechanism 1, there are two folding ends 10 at the top and one folding end 10 at the bottom. If the bag is allowed to fall naturally and then be packed and collected, the two folding ends 10 at the top are not aesthetically pleasing and are not conducive to counting the quantity.
[0022] A plastic bag folding mechanism 1 and a plastic bag holding plate 2 are provided on the frame 6, including a receiving rack 3; the receiving rack 3 is located below the plastic bag folding mechanism 1; the receiving rack 3 is also located above the plastic bag holding plate 2; the receiving rack 3 is provided with an opening for receiving and discharging plastic bags; the receiving rack 3 is rotatably positioned facing the plastic bag holding plate 2; a discharge plate 4 is provided on the side of the receiving rack 3 near the plastic bag holding plate 2; when the plastic bag is discharged from the receiving rack 3, it slides outward along the discharge plate 4 from the receiving rack 3.
[0023] The receiving rack 3 is also provided with push plates 5 on both sides; and a push plate 5 driving mechanism for pushing the push plates 5 on both sides to move in opposite directions; the receiving rack 3 is mounted on the frame 6, the receiving rack 3 is rotatably connected to the frame 6, and a rotation driving mechanism 7 is installed between the receiving rack 3 and the frame 6; the rotation driving mechanism 7 is a push cylinder 8 set between the receiving rack 3 and the frame 6; the push plate 5 driving mechanism is a circulating belt mechanism 9 driven by a motor on the back of the receiving rack 3; the push plates 5 on both sides are respectively connected to the upper and lower sides of the circulating belt.
[0024] The discharge plate 4 has upward-opening slits 11 spaced apart, and the plastic bag holding plate 2 is provided with a reciprocating fork plate 12 corresponding to the slits 11, which is used to push the plastic bags that slide out of the discharge plate 4 onto the plastic bag holding plate 2. Example 2
[0025] The difference from Embodiment 1 is that the rotation drive mechanism 7 is a drive motor, and the output end of the motor is connected to the receiving frame 3.
[0026] Combination Figure 1-5 As shown, during use, a receiving rack 3 is set between the plastic bag folding mechanism 1 and the plastic bag holding plate 2 on the frame 6. Through the transfer and discharge of the receiving rack 3, the upper and lower positions of the plastic bags are interchanged, which improves the aesthetics of the packaged plastic bags. At the same time, it is also convenient to count the number of discharged plastic bags. Meanwhile, a pusher plate 5 is set on the receiving rack 3 to push the plastic bags to the center, which saves production line space and further simplifies the workflow. This improves the integration of the plastic bag making device and further enhances the neatness and aesthetics of the plastic bags.
[0027] Combination Figure 1-5 As shown, the receiving rack 3 is rotatably connected to the frame 6 and is driven to rotate on the frame 6 by a motor or a push cylinder 8 to realize material receiving and discharge.
[0028] Combination Figure 1-5 As shown, when the receiving rack 3 receives the falling plastic bag, one side of the two folded ends 10 of the plastic bag is still on top. When the plastic bag slides out of the receiving rack 3 along the discharge plate 4, the part that was originally on the top side first slides outward to the bottom, and then falls onto the plastic bag holding plate 2. In order to improve the discharge efficiency, a fork plate 12 can be set on the plastic bag holding plate 2 at the position corresponding to the discharge plate 4. Driven by a reciprocating drive mechanism, it cooperates with the upward opening gap 11 on the discharge plate 4. When the discharge plate 4 rotates to tilt downward, the insert plate moves along the gap 11 to the plastic bag holding plate 2, pushing the plastic bag onto the plastic bag holding plate 2.
[0029] The control method of this utility model is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by those skilled in the art, which is common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail.
[0030] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within its protection scope. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.
Claims
1. A bag-dropping and flipping mechanism, wherein a plastic bag folding mechanism (1) and a plastic bag holding plate (2) are provided on a frame (6), characterized in that: Includes a receiving rack (3); the receiving rack (3) is located below the plastic bag folding mechanism (1); the receiving rack (3) is also located above the plastic bag holding plate (2); the receiving rack (3) is provided with an opening for receiving and discharging plastic bags; the receiving rack (3) is rotatably positioned facing the plastic bag holding plate (2); the receiving rack (3) is provided with a discharge plate (4) on the side near the plastic bag holding plate (2); when the plastic bag is discharged from the receiving rack (3), it slides out of the receiving rack (3) along the discharge plate (4).
2. The bag-dropping and flipping mechanism according to claim 1, characterized in that: The receiving rack (3) is also provided with push plates (5) on both sides; and a push plate (5) drive mechanism for pushing the push plates (5) on both sides to move in opposite directions.
3. The bag-dropping and flipping mechanism according to claim 1, characterized in that: The receiving rack (3) is mounted on the frame (6), the receiving rack (3) is rotatably connected to the frame (6), and a rotation drive mechanism (7) is installed between the receiving rack (3) and the frame (6).
4. The bag-dropping and flipping mechanism according to claim 3, characterized in that: The rotation drive mechanism (7) is a drive motor, and the output end of the motor is connected to the receiving frame (3).
5. The bag-dropping and flipping mechanism according to claim 3, characterized in that: The rotation drive mechanism (7) is a push cylinder (8) located between the receiving rack (3) and the frame (6).
6. The bag-dropping and flipping mechanism according to claim 2, characterized in that: The push plate (5) driving mechanism is a circulating belt mechanism (9) driven by a motor on the back of the receiving frame (3); the push plates (5) on both sides are respectively connected to the upper and lower sides of the circulating belt.
7. The bag-dropping and flipping mechanism according to claim 1, characterized in that: The discharge plate (4) is provided with upward-opening slits (11) at intervals, and the plastic bag holding plate (2) is provided with reciprocating fork plates (12) corresponding to the slits (11) to push the plastic bags that slide out of the discharge plate (4) onto the plastic bag holding plate (2).