Automatic folding device for inner card of paper-plastic package
By designing an automatic folding device for inner cards in paper-plastic packaging, fully automatic transfer and four-corner folding were achieved, solving the problems of low efficiency and low precision of manual operation, and improving production efficiency and product standardization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WING FAT (HENAN) MOLDED FIBER TECH DEV CO LTD
- Filing Date
- 2025-07-26
- Publication Date
- 2026-07-07
AI Technical Summary
The processing efficiency and precision of paper-plastic packaging inner cards are low, and manual operation is prone to fatigue and errors, making it difficult to meet the needs of mass production.
Design an automatic folding device for inner cards of paper-plastic packaging, including a frame, a transfer component and a folding component, to achieve fully automatic transfer and four-corner folding, replacing manual operation with mechanized operation to ensure folding accuracy and efficiency.
The entire process of loading and folding the paper-plastic inner card has been automated, which has significantly improved production efficiency, reduced labor intensity and human error, and ensured the standardization of the inner card and product quality.
Smart Images
Figure CN224467091U_ABST
Abstract
Description
Technical Field
[0001] This utility model specifically relates to an automatic folding device for inner cards in paper-plastic packaging, belonging to the field of paper-plastic packaging technology. Background Technology
[0002] In the paper-plastic packaging production industry, inner cards are key components for protecting products and achieving internal positioning of packaging. Their processing quality and efficiency directly affect the overall packaging production progress. Currently, the folding processing of inner cards for paper-plastic packaging relies heavily on manual operation. Operators need to first move the sheet-like inner cards from the stacking area to the folding station, and then manually fold the four corners of the inner card along the preset creases. After folding, the formed inner card must be transferred to the next process.
[0003] This traditional processing method has many drawbacks: on the one hand, manual handling and folding are extremely inefficient, and the processing time for a single inner card is long, making it difficult to meet the needs of mass production. Moreover, repetitive manual handling and folding can easily lead to fatigue, further reducing production efficiency. On the other hand, the accuracy of manual folding is greatly affected by operating experience and physical strength, and problems such as crease deviation and inconsistent folding angles at the four corners occur frequently, resulting in inconsistent inner card specifications, affecting the stability of subsequent packaging and assembly, and may even cause product damage due to folding deviations.
[0004] Therefore, the market urgently needs an automatic folding device for inner cards in paper-plastic packaging. Utility Model Content
[0005] The purpose of this utility model is to address the shortcomings of existing technologies by providing an automatic folding device for inner cards in paper-plastic packaging. This device enables fully automatic transfer, significantly improves production efficiency, and automatically drives the folding plate to flip and complete the folding of the four corners of the inner card. It eliminates the need for manual folding and transforms the folding process from manual operation to automated mechanical operation, thereby significantly improving overall processing efficiency.
[0006] This utility model achieves the above-mentioned objectives through the following technical solution: an automatic folding device for paper-plastic packaging inner cards, including a frame, a loading frame fixed on one side of the frame, a transfer component installed on the top of the frame, the transfer component including a transfer slide rail fixed on the top of the frame, a transfer trolley body slidably connected to the surface of the transfer slide rail, and a lifting cylinder screwed to the lower surface of the transfer trolley body, the output end of the lifting cylinder being fixed with a suction cup frame, realizing fully automatic transfer, greatly improving production efficiency, realizing fully automated transfer of paper-plastic packaging inner cards from the loading frame to the folding base, eliminating the need for manual handling and placement, and greatly improving overall processing efficiency;
[0007] It also includes a folding assembly installed on the surface of the frame. The folding assembly includes a folding base fixed to the surface of the frame and folding plates connected to the four corners of the folding base surface by hinges. The folding plates flip smoothly and make gentle contact with the edge of the inner card, ensuring that the inner card remains structurally intact and undamaged during the folding process, thus guaranteeing product quality.
[0008] Preferably, a transfer threaded rod is rotatably connected to the surface of the frame, and a transfer motor is screwed to the surface of the frame. The output end of the transfer motor is connected to one end of the transfer threaded rod. The entire transfer process can be completed automatically by simply starting the equipment. Operators do not need to perform repetitive bending, grabbing, and carrying actions, which greatly reduces labor intensity, effectively reduces human fatigue, and reduces the risk of production interruption due to human error.
[0009] Preferably, the surface of the transfer threaded rod is threaded with a transfer screw block, and the transfer screw block is fixedly connected to the transfer vehicle body.
[0010] Preferably, a pressure plate is provided directly above the folding base, and several sets of springs arranged in a ring array are fixed between the pressure plate and the folding base. The lowering force of the lifting cylinder is adjustable, and with the buffering effect of the springs, excessive force during folding can be avoided to prevent tearing or deformation of the inner clamp.
[0011] Preferably, limit posts are fixed at the four corners of the upper surface of the folding base, and the top of the limit posts is directly opposite the four corners of the pressure plate. The limit posts corresponding to the four corners of the pressure plate can accurately limit the maximum downward movement distance of the pressure plate, effectively avoid fatigue damage to the spring due to excessive compression, and prevent the pressure column, flip hinge and other components from deforming or breaking due to excessive force, thereby reducing the failure rate of the equipment, extending the service life of the core components and reducing maintenance costs.
[0012] Preferably, a pressure post is fixed at the center of the lower surface of the pressure plate, and a through groove adapted to the pressure post is provided inside the folding base.
[0013] Preferably, hinge seats are fixed at all four corners of the surface of the pressing column, and a flip hinge rod is hinged inside the hinge seat. A pusher is fixed at the end of the flip hinge rod away from the hinge seat. A flip hinge seat is fixed on the surface of the frame. The flip hinge seat is hinged to the flip hinge rod, so as to realize the automatic driving of the folding plate to flip and complete the folding of the four corners of the inner card. There is no need for manual folding. The folding process is transformed from manual operation to mechanical automation, which greatly shortens the folding time of a single inner card and significantly improves the overall processing efficiency.
[0014] Preferably, the top of the pusher has an arc-shaped structure, and the interior of the flip hinge has a clearance groove that matches the flip hinge seat.
[0015] The beneficial effects of this utility model are as follows: This automatic folding device for paper-plastic packaging inner cards achieves fully automatic transfer, greatly improving production efficiency. It realizes fully automated transfer of paper-plastic inner cards from the loading frame to the folding base, eliminating the need for manual handling and placement, and significantly improving overall processing efficiency. It automatically drives the folding plate to flip and complete the four corner folding of the inner card, eliminating the need for manual edge folding. It transforms the folding process from manual operation to mechanical automation, greatly shortening the folding time of a single inner card and significantly improving overall processing efficiency. The flipping angle is precisely controlled by the mechanical transmission of the flipping hinge and the pusher, which can accurately fold along the preset creases of the inner card, ensuring strong synchronization of the four corner folding actions. It avoids problems such as crease deviation and inconsistent angles that are prone to occur during manual folding, making the folding shape of each inner card uniform and improving the standardization of the product. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;
[0017] Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ;
[0018] Figure 3 This is a schematic diagram of the structure of the transfer component in this utility model;
[0019] Figure 4 This is a schematic diagram of the folding component in this utility model. Figure 1 ;
[0020] Figure 5 This is a schematic diagram of the folding component in this utility model. Figure 2 ;
[0021] Figure 6 This is a schematic diagram of the lower pressure column and the flip hinge rod in this utility model;
[0022] In the diagram: 1. Frame; 2. Loading frame; 3. Transfer assembly; 301. Transfer threaded rod; 302. Transfer motor; 303. Transfer screw block; 304. Transfer vehicle body; 305. Transfer slide rail; 306. Lifting cylinder; 307. Suction cup frame; 4. Folding assembly; 401. Folding base; 402. Pressure plate; 403. Spring; 404. Limiting post; 405. Folding plate; 406. Downward pressure post; 407. Hinge seat; 408. Flip hinge rod; 409. Flip hinge seat; 410. Push frame. Detailed Implementation
[0023] 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.
[0024] Please see Figures 1-6 As shown, an automatic folding device for paper-plastic packaging inner cards includes a frame 1, a loading frame 2 fixed on one side of the frame 1, and a transfer component 3 installed on the top of the frame 1. The transfer component 3 includes a transfer slide rail 305 fixed on the top of the frame 1, a transfer vehicle body 304 slidably connected to the surface of the transfer slide rail 305, and a lifting cylinder 306 screwed to the lower surface of the transfer vehicle body 304. A suction cup frame 307 is fixed to the output end of the lifting cylinder 306, realizing fully automatic transfer, greatly improving production efficiency, and realizing fully automated transfer of paper-plastic inner cards from the loading frame 2 to the folding base 401 without manual handling and placement, which can greatly improve the overall processing efficiency.
[0025] It also includes a folding assembly 4 installed on the surface of the frame 1. The folding assembly 4 includes a folding base 401 fixed to the surface of the frame 1 and folding plates 405 connected to the four corners of the surface of the folding base 401 by hinges. The folding plate 405 flips smoothly and makes gentle contact with the edge of the inner card, ensuring that the inner card remains structurally intact and undamaged during the folding process, thus guaranteeing product quality.
[0026] The surface of the frame 1 is rotatably connected to a transfer threaded rod 301, and the surface of the frame 1 is screwed to a transfer motor 302. The output end of the transfer motor 302 is connected to one end of the transfer threaded rod 301. The entire transfer process can be completed automatically by simply starting the equipment. Operators do not need to perform repetitive bending, grabbing, and carrying actions, which greatly reduces labor intensity, effectively reduces human fatigue, and reduces the risk of production interruption due to human error.
[0027] The surface of the transfer threaded rod 301 is threaded with a transfer screw block 303, and the transfer screw block 303 is fixedly connected to the transfer vehicle body 304.
[0028] A pressure plate 402 is provided directly above the folding base 401. Several sets of springs 403 arranged in a ring array are fixed between the pressure plate 402 and the folding base 401. The lowering force of the lifting cylinder 306 is adjustable. With the buffering effect of the springs 403, it can prevent the inner clamp from tearing or deforming due to excessive force during folding.
[0029] Limiting posts 404 are fixed at the four corners of the upper surface of the folding base 401, and the top of the limiting posts 404 is directly opposite the four corners of the pressure plate 402. The limiting posts 404 at the four corners of the pressure plate 402 can accurately limit the maximum downward movement distance of the pressure plate 402, effectively preventing the spring 403 from fatigue damage due to excessive compression. At the same time, it prevents components such as the pressing post 406 and the flipping hinge 408 from deforming or breaking due to excessive force, thereby reducing the failure rate of the equipment, extending the service life of the core components, and reducing maintenance costs.
[0030] A pressure post 406 is fixed at the center of the lower surface of the pressure plate 402, and a through groove adapted to the pressure post 406 is provided inside the folding base 401.
[0031] Hinges 407 are fixed at the four corners of the surface of the pressure column 406. A flip hinge rod 408 is hinged inside the hinge seat 407. A pusher 410 is fixed at the end of the flip hinge rod 408 away from the hinge seat 407. A flip hinge seat 409 is fixed on the surface of the frame 1. The flip hinge seat 409 is hinged to the flip hinge rod 408, so as to automatically drive the folding plate 405 to flip and complete the folding of the four corners of the inner card. There is no need for manual folding. The folding process is transformed from manual operation to mechanical automation, which greatly shortens the folding time of a single inner card and significantly improves the overall processing efficiency.
[0032] The top of the pusher 410 has an arc-shaped structure, and the interior of the flip hinge 408 has a clearance groove that matches the flip hinge seat 409.
[0033] The working principle and usage process of this utility model are as follows: When it is necessary to fold the inner card of the paper-plastic packaging, the transfer motor 302 is started first. Its output end drives the transfer threaded rod 301 to rotate. Since the transfer screw block 303, which is threadedly connected to the surface of the transfer threaded rod 301, is fixedly connected to the transfer carriage 304, and the transfer carriage 304 is limited by the transfer slide rail 305, the transfer screw block 303 will move axially along the transfer threaded rod 301, thereby driving the transfer carriage 304 to slide laterally on the surface of the transfer slide rail 305, realizing the horizontal position adjustment of the suction cup frame 307. When the transfer... When the vehicle body 304 moves above the loading frame 2, the output end of the lifting cylinder 306 extends, pushing the suction cup frame 307 down to the surface of the paper-plastic inner card inside the loading frame 2. The suction cup frame 307 uses negative pressure to grip the inner card. Then, the lifting cylinder 306 retracts, causing the inner card to rise. The transfer motor 302 rotates in the opposite direction, and through the cooperation of the transfer threaded rod 301 and the transfer screw block 303, the transfer vehicle body 304 is moved above the folding base 401. Then, the lifting cylinder 306 descends, placing the inner card on the surface of the folding base 401, realizing fully automatic transfer and greatly improving production efficiency. This achieves fully automated transfer of the paper-plastic inner card from the loading frame 2 to the folding base 401, eliminating the need for manual handling and placement. This significantly improves overall processing efficiency. The entire transfer process can be completed automatically simply by starting the equipment. Operators do not need to perform repetitive bending, gripping, and carrying actions, greatly reducing labor intensity, effectively reducing human fatigue, and lowering the risk of production interruptions due to human error.
[0034] Furthermore, after the inner card of the paper-plastic packaging is placed on the pressure plate 402, the continued descent of the lifting cylinder 306 can drive the pressure plate 402 to move downward, compressing the spring 403 between the pressure plate 402 and the folding base 401. At this time, the lower pressure column 406 on the lower surface of the pressure plate 402 passes through the through groove inside the folding base 401 and moves downward. When the lower pressure column 406 moves downward, the hinge seats 407 at the four corners of its surface descend synchronously, causing the hinged flipping hinge rod 408 to rotate around the flipping hinge seat 409 as the fulcrum. The end of the flipping hinge rod 408 away from the hinge seat 407 tilts upward, pushing the folding plates 405 at the four corners of the folding base 401 through the pusher frame 410, so that the folding plates 405 are aligned with the folding base. The hinge connection of 401 flips upward, thereby folding the four corners of the paper-plastic inner card placed on the surface of the folding base 401 upward, completing the folding action. This automatically drives the folding plate 405 to flip and complete the folding of the four corners of the inner card, eliminating the need for manual folding. This transforms the folding process from manual operation to automated mechanical operation, significantly shortening the folding time of a single inner card and greatly improving the overall processing efficiency. The flipping angle is precisely controlled by the mechanical transmission of the flipping hinge 408 and the pusher 410, which can accurately fold along the preset creases of the inner card, ensuring strong synchronization of the four corner folding action. This avoids problems such as crease deviation and inconsistent angles that are prone to occur during manual folding, making the folding shape of each inner card uniform and improving the standardization of the product.
[0035] During the flipping process, the inner side of the folding plate 405 contacts the inner edge of the pressure plate 402, folding the four corners of the inner edge upwards along the preset creases. The limiting posts 404 at the corresponding positions of the four corners of the pressure plate 402 can limit the maximum downward movement of the pressure plate 402, preventing excessive compression of the spring 403 or damage to components. After the inner edge is folded into shape, the lifting cylinder 306 drives the suction cup frame 307 to move upwards, the spring 403 releases its elastic potential energy, pushing the pressure plate 402 to return to its original position, the lowering post 406 rises accordingly, the flipping hinge 408 rotates in the opposite direction, the pusher 410 descends, and the folding plate 405 falls back to its initial position under its own gravity, completing one folding cycle. The limiting posts 404 at the four corners of the pressure plate 402 limit the maximum downward movement of the pressure plate 402, preventing excessive compression of the spring 403 or damage to components. 04 can precisely limit the maximum downward movement distance of the pressure plate 402, effectively preventing fatigue damage to the spring 403 due to excessive compression. At the same time, it prevents components such as the pressure column 406 and the flip hinge 408 from deforming or breaking due to excessive force, reducing the equipment failure rate, extending the service life of core components, and reducing maintenance costs. The folding and resetting process is completely completed automatically by the mechanical structure without the need for manual adjustment or resetting, reducing the chance of contact between operators and moving parts of the equipment, reducing safety hazards such as pinching and bumping. The automatic resetting function ensures that the equipment always maintains the initial working state, preparing for the next folding, further reducing manual operation steps and improving the safety and convenience of production.
[0036] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
[0037] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.
Claims
1. An automatic folding device for inner cards in paper-plastic packaging, comprising a frame (1), characterized in that: A loading frame (2) is fixed on one side of the surface of the frame (1), and a transfer assembly (3) is installed on the top of the frame (1). The transfer assembly (3) includes a transfer slide rail (305) fixed on the top of the frame (1), a transfer vehicle body (304) slidably connected to the surface of the transfer slide rail (305), and a lifting cylinder (306) screwed to the lower surface of the transfer vehicle body (304). A suction cup frame (307) is fixed to the output end of the lifting cylinder (306). It also includes a folding assembly (4) mounted on the surface of the frame (1), the folding assembly (4) including a folding base (401) fixed on the surface of the frame (1) and folding plates (405) hinged to the four corners of the surface of the folding base (401).
2. The automatic folding device for inner card of paper-plastic packaging as described in claim 1, characterized in that: The surface of the frame (1) is rotatably connected to a transfer threaded rod (301), and the surface of the frame (1) is screwed to a transfer motor (302). The output end of the transfer motor (302) is connected to one end of the transfer threaded rod (301).
3. The automatic folding device for inner cards in paper-plastic packaging as described in claim 2, characterized in that: The transfer threaded rod (301) has a transfer screw block (303) threadedly connected to its surface, and the transfer screw block (303) is fixedly connected to the transfer vehicle body (304).
4. The automatic folding device for inner card of paper-plastic packaging as described in claim 1, characterized in that: A pressure plate (402) is provided directly above the folding base (401), and a number of springs (403) arranged in a ring array are fixed between the pressure plate (402) and the folding base (401).
5. The automatic folding device for inner card of paper-plastic packaging as described in claim 4, characterized in that: Limiting posts (404) are fixed at the four corners of the upper surface of the folding base (401), and the top of the limiting posts (404) is directly opposite the four corners of the pressure plate (402).
6. The automatic folding device for inner card of paper-plastic packaging as described in claim 4, characterized in that: A pressure post (406) is fixed at the center of the lower surface of the pressure plate (402), and a through groove adapted to the pressure post (406) is provided inside the folding base (401).
7. The automatic folding device for inner card of paper-plastic packaging as described in claim 6, characterized in that: Hinges (407) are fixed at the four corners of the surface of the lower pressure column (406). A flip hinge (408) is hinged inside the hinge (407). A pusher (410) is fixed at the end of the flip hinge (408) away from the hinge (407). A flip hinge (409) is fixed on the surface of the frame (1). The flip hinge (409) is hinged to the flip hinge (408).
8. The automatic folding device for inner card of paper-plastic packaging as described in claim 7, characterized in that: The top of the pusher (410) has an arc-shaped structure, and the interior of the flip hinge (408) is provided with a clearance groove that is compatible with the flip hinge seat (409).