Paper package separating device for opening a moisture-proof package film of printed paper

Abstract

This invention discloses a paper-packing separation device that can open the moisture-proof packaging film of printed paper, belonging to the technical field of auxiliary equipment for printing. It includes a frame, a conveyor table, a film suction assembly, a film cutting assembly, and a paper pushing mechanism. The conveyor table has a film-removing station with a cutting slit on its right side near the film-removing station. The film suction assembly and the film cutting assembly are mounted on the frame. The film suction assembly includes a negative pressure chamber and an air intake. The negative pressure chamber is located to the right of the film-removing station and above the conveyor table. The air intake is located on the side wall of the housing of the negative pressure chamber and faces the film-removing station. The film cutting assembly is located below the worktable, and its working end can extend through the cutting slit onto the conveyor table. The paper pushing mechanism is located on the conveyor table and separates the paper from the open packaging bag. This avoids tearing the paper inside the packaging film during manual cutting, reducing manpower and increasing efficiency.

Description

Technical Field

[0001] This invention belongs to the technical field of auxiliary equipment for printing, and in particular to a paper package separation device that can open the moisture-proof packaging film of printing paper. Background Technology

[0002] Securities have extremely high printing precision requirements, and controlling the quality of the printing paper and preventing moisture damage and deformation is a very effective measure. At the factory, 500 or 1000 sheets of paper are usually packaged together, with each sheet approximately 1 meter in size, making the package quite heavy. These are then sealed in plastic film bags, stacked, and transported by truck. Because static electricity is generated between the packaging film and the paper during transportation, the packaging bags are removed one by one before production. During unpacking, the packaging film and the top layer of paper may adhere together due to static electricity; therefore, when making the opening with a knife, great care must be taken to avoid cutting the top layer of paper and causing damage.

[0003] The handling process is also very difficult in the subsequent production and processing stages.

[0004] Currently, the industry faces the following main technical challenges in opening, handling, and dismantling this type of flexible packaging: First, the automation level is low and labor costs are high. Currently, manual handling, unpacking, paper collection, and waste film collection are widely used. This method of operation is labor-intensive, monotonous, and not only inefficient and labor-intensive, but also prone to paper damage due to human factors, seriously affecting the continuity of subsequent production processes.

[0005] Secondly, existing automated unpacking solutions suffer from poor reliability. Patent document 201621481985.5 proposes an intelligent unpacking system that relies solely on bottom suction holes to adsorb the packaging film after cutting. However, this single adsorption method is highly prone to failure during bottle packaging material transfer and pushing: the bottom packaging film is easily lifted up. This unstable adsorption method severely hinders the automated and stable operation of the unpacking process, reducing production efficiency. It is also unsuitable for unpacking highly sensitive securities.

[0006] Therefore, how to achieve an automated opening technology that is precise in cutting, reliable in grasping, and adaptable to flexible packaging has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] This invention provides a paper packaging separation device that can open the moisture-proof packaging film of printed paper, which avoids tearing the paper inside the packaging film during manual demolding and reduces the intensity of manual labor.

[0008] The present invention solves the above-mentioned technical problems through the following technical solutions: A paper packaging separation device for opening moisture-proof packaging film of printed paper includes a frame, a conveyor table, a film suction assembly, a film cutting assembly, and a paper pushing mechanism. The conveyor table is provided with a film removal station, and a cutting slit is opened on the right side of the film removal station. The film suction assembly and the film cutting assembly are mounted on the frame. The film suction assembly includes a negative pressure chamber and an air inlet. The negative pressure chamber is located on the right side of the film removal station and above the conveyor table. The air inlet is opened on the side wall of the housing of the negative pressure chamber and faces the film removal station. The film cutting assembly is located below the worktable, and the working end of the film cutting assembly can extend through the cutting slit to the conveyor table. The paper pushing mechanism is located on the conveyor table to separate the paper from the open packaging bag.

[0009] The aforementioned paper packaging separation device for opening the moisture-proof packaging film of printed paper is further provided with a pressing mechanism in the negative pressure chamber. The pressing mechanism includes a pressing cylinder, a pressing plate and a support plate. The support plate is fixed in the negative pressure chamber and connected to the air inlet. The pressing plate is located above the support plate. The cylinder barrel and cylinder rod of the pressing cylinder are respectively fixed to the top wall of the negative pressure chamber and the pressing plate.

[0010] The aforementioned paper pack separation device for opening the moisture-proof packaging film of printed paper also includes a paper pressing mechanism. The paper pressing mechanism is located above the film removal station. The paper pressing mechanism includes a paper pressing cylinder and a pressure plate. The paper pressing cylinder is installed on the frame, and the cylinder rod of the paper pressing cylinder is connected to the top surface of the pressure plate.

[0011] The aforementioned paper packaging separation device for opening the moisture-proof packaging film of printed paper also includes a connecting frame, a push-pull cylinder, and a lifting cylinder. The cylinder barrel and cylinder rod of the push-pull cylinder are respectively fixedly connected to the connecting frame and the housing of the negative pressure chamber. The lifting cylinder is arranged longitudinally, and the cylinder barrel and cylinder rod of the lifting cylinder are respectively fixedly connected to the frame and the connecting frame.

[0012] The aforementioned paper package separation device for opening the moisture-proof packaging film of printed paper includes a film cutting assembly comprising a cutter, a lifting mechanism, and a translation mechanism. The cutter's blade holder is mounted on the moving end of the lifting mechanism, the fixed end of the lifting mechanism is fixedly connected to the moving end of the translation mechanism, and the fixed end of the translation mechanism is fixedly connected to the frame. The lifting mechanism drives the cutter to rise and fall, and the cutter can extend through the cutting slit to above the conveyor table.

[0013] The aforementioned paper pack separation device for opening the moisture-proof packaging film of printed paper includes a paper pushing mechanism comprising a negative pressure adsorption mechanism, a push plate, and a pushing cylinder. The pushing cylinder is installed on the edge of the conveyor table and is connected to the push plate. The negative pressure adsorption mechanism includes a negative pressure chamber and a negative pressure suction hole. The negative pressure suction hole is located on the surface of the conveyor table, and the negative pressure chamber is located below the conveyor table. The negative pressure suction hole communicates with the negative pressure chamber.

[0014] The aforementioned paper package separation device for opening the moisture-proof packaging film of printed paper is also provided with a push-pull guide mechanism. The push-pull guide mechanism includes a push-pull guide block and a push-pull guide rail. The push-pull guide block and the push-pull guide rail are matched. The push-pull guide rail is fixed on the frame. The push-pull guide block is fixedly connected to the bottom of the connecting frame.

[0015] The aforementioned paper package separation device with an openable moisture-proof packaging film for printed paper also includes a lifting guide mechanism. This lifting guide mechanism comprises a lifting guide block and a lifting guide rail, which are matched. The lifting guide rail is fixed to the side of the connecting frame, and the lifting guide block is fixedly connected to the side wall of the negative pressure chamber housing. The working process includes the following steps: A. Packaging: The paper package is placed on the conveyor table, and the pushing mechanism pushes the paper package to the film cutting station. The conveyor table surface of the film cutting station is equipped with negative pressure suction holes, which suck up the packaging bag outside the paper package. B. Film suction: The film suction mechanism moves to the left and close to the right side of the paper package, and the film suction mechanism sucks the right edge of the packaging film; C. Tightening: The film suction mechanism moves to the right and resets, tightening the right edge of the packaging film to the right; D. Film cutting: A cutting slit is set on the right side of the cutting board, which runs through the conveyor. The cutter rises, passes through the cutting slit, and cuts the packaging bag. After cutting, the right edge of the packaging bag is connected to the packaging bag body only on the top surface. E. Paper-film separation: The pushing mechanism continues to push to the right, pushing the paper out of the packaging bag and moving the paper to the next station; Compared with existing technologies, this invention stabilizes the paper package at the demolding station by setting up negative pressure suction holes and a paper pressing mechanism. Then, a film suction mechanism sucks up and tightens the edge of the packaging bag, followed by a film cutting mechanism that cuts the bottom and side surfaces of the packaging bag. Finally, the film suction mechanism lifts up, and a paper pushing mechanism pushes the paper out of the packaging bag, completing the paper package separation. Simultaneously, it avoids human-caused damage during manual dismantling, improves work efficiency, facilitates integration with existing automated production lines, and significantly reduces the labor intensity of manually handling paper stacks. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the film suction assembly of the present invention (before film cutting); Figure 3 This is a schematic diagram of the structure of the film suction assembly of the present invention (after film cutting); Figure 4 This is a schematic diagram of the internal structure of the suction cavity of the present invention; Figure 5 This is a schematic diagram of the side structure of the present invention; Figure 6This is a diagram showing the location of the cutting points (opening direction) of the packaging bag according to the present invention. The labels in the attached diagram represent: 1. Frame, 2. Conveyor table, 3. Film suction assembly, 4. Film cutting assembly, 5. Paper pushing mechanism, 6. Cutting slit, 7. Negative pressure chamber, 8. Air suction port, 9. Pressing cylinder, 10. Pressing plate, 11. Support plate, 12. Paper pressing cylinder, 13. Pressing plate, 14. Connecting frame, 15. Push-pull cylinder, 16. Lifting cylinder, 17. Cutter, 18. Lifting mechanism, 19. Translation mechanism, 20. Push plate, 21. Pushing cylinder, 22. Negative pressure chamber, 23. Negative pressure suction hole, 24. Push-pull guide block, 25. Push-pull guide rail, 26. Lifting guide block, 27. Lifting guide rail. Detailed Implementation

[0017] The specific embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention.

[0018] like Figures 1 to 6 The present invention includes a frame 1, a conveyor 2, a film suction assembly 3, a film cutting assembly 4, and a paper pushing mechanism 5. The conveyor 2 is provided with a film removal station, and a cutting slit 6 is opened on the conveyor 2 near the right side of the film removal station. The film suction assembly 3 and the film cutting assembly 4 are mounted on the frame 1. The film suction assembly 3 includes a negative pressure chamber 7 and an air intake 8. The negative pressure chamber 7 is located to the right of the film removal station and above the conveyor 2. The air intake 8 is opened on the side wall of the housing of the negative pressure chamber 7 and faces the film removal station. The film cutting assembly 4 is located below the worktable, and the working end of the film cutting assembly 4 can extend through the cutting slit 6 onto the conveyor 2. The paper pushing mechanism 5 is located on the conveyor 2 and pushes the paper out of the open packaging bag. When the paper package reaches the demolding station, the negative pressure in the negative pressure chamber 7 draws the edge of the packaging film into the suction port 8, thereby stretching the edge of the packaging film and creating a gap between the edge of the packaging film and the paper. Then, the film cutting assembly 4 cuts the packaging film at the gap to form an opening. The paper pushing mechanism 5 separates the packaging film from the paper inside the packaging film.

[0019] To prevent the packaging film edge from detaching from the air intake 8 during the cutting process, a pressing mechanism is provided within the negative pressure chamber 7. This pressing mechanism includes a pressing cylinder 9, a pressing plate 10, and a support plate 11. The support plate 11 is fixed within the negative pressure chamber 7 and connected to the air intake 8. The pressing plate 10 is positioned above the support plate 11. The cylinder barrel and cylinder rod of the pressing cylinder 9 are respectively fixed to the top wall of the negative pressure chamber 7 and the pressing plate 10. After the packaging film passes through the air intake 8 and enters the negative pressure chamber 7, the pressing cylinder 9 drives the pressing plate 10 to press down, pressing the edge of the packaging film between the pressing plate 10 and the support plate 11. This ensures that the packaging film is flattened during the cutting process.

[0020] To ensure the paper package remains stably positioned at the demolding station during the film-cutting process, a paper-pressing mechanism is installed. Located above the demolding station, the mechanism includes a paper-pressing cylinder 12 and a pressure plate 13. The paper-pressing cylinder 12 is mounted on the frame 1, and its cylinder rod is connected to the top surface of the pressure plate 13. When the paper-pressing cylinder 12 is activated, it presses the pressure plate 13 onto the paper package, ensuring the package remains stably positioned at the demolding station throughout the entire opening process.

[0021] To ensure that the suction port 8 can accurately suck up the edge of the packaging film, a connecting frame 14, a push-pull cylinder 15, and a lifting cylinder 16 are also provided. The cylinder barrel and cylinder rod of the push-pull cylinder 15 are fixedly connected to the connecting frame 14 and the housing of the negative pressure chamber 7, respectively. The lifting cylinder 16 is arranged longitudinally, and its cylinder barrel and cylinder rod are fixedly connected to the frame 1 and the connecting frame 14, respectively. The push-pull cylinder 15 can first press against the right edge of the paper package, and then the negative pressure chamber 7 operates to suck the packaging film into the suction port 8.

[0022] Furthermore, the film cutting assembly 4 includes a cutter 17, a lifting mechanism 18, and a translation mechanism 19. The cutter holder of the cutter 17 is mounted on the moving end of the lifting mechanism 18, and the fixed end of the lifting mechanism 18 is fixedly connected to the moving end of the translation mechanism 19. The fixed end of the translation mechanism 19 is fixedly connected to the frame 1. The lifting mechanism 18 drives the cutter 17 to rise and fall, and the cutter 17 can extend through the cutting slit 6 to above the conveyor table 2. When the edge of the packaging film enters the suction port 8, the right edge of the paper package separates from the paper inside the package. The cutter 17 rises to cut the packaging film, preventing it from cutting the paper. Depending on actual needs, the lifting mechanism 18 and the translation mechanism 19 can be combined with commercially available suitable models of electric cylinders, hydraulic cylinders, or linear guide pairs and connecting parts. The paper pushing mechanism 5 includes a push plate 20 and a push cylinder 21. The push cylinder 21 is installed on the edge of the conveyor table 2 and is connected to the push plate 20. The push plate 20 is arranged perpendicular to the conveyor table 2, and the push cylinder 21 is connected to the rear side of the push plate 20. A gap is left between the push plate 20 and the conveyor table 2 so that when the paper package is separated, the packaging bag remains on the demolding station of the conveyor table 2. To ensure the paper package remains stably on the conveyor platform 2, a negative pressure adsorption mechanism is installed. This mechanism includes a negative pressure chamber 22 and a negative pressure suction hole 23. The suction hole 23 is located on the surface of the conveyor platform 2, and the negative pressure chamber 22 is located below it. The suction hole 23 communicates with the negative pressure chamber 22. The suction hole holds the packaging bag at the bottom of the paper package.

[0023] To ensure stable lifting and lowering of the film suction assembly 3, a push-pull guide mechanism is provided. This mechanism includes a push-pull guide block 24 and a push-pull guide rail 25, which are matched. The push-pull guide rail 25 is fixed to the frame 1, and the push-pull guide block 24 is fixedly connected to the bottom of the connecting frame 14. This allows for stable pushing and pulling of the negative pressure chamber 7.

[0024] To facilitate the lifting and lowering of the connecting frame 14, a lifting guide mechanism is also provided. This mechanism includes a lifting guide block 26 and a lifting guide rail 27. The lifting guide block 26 and the lifting guide rail 27 are matched, with the lifting guide rail 27 fixed to the side of the connecting frame 14. The lifting guide block 26 is fixedly connected to the side wall of the negative pressure chamber 7. This allows the negative pressure chamber 7 to be raised, making room for the paper pushing mechanism 5 to push the paper.

[0025] The working process is as follows: The paper package is placed on the conveyor table 2, and the paper pushing mechanism 5 pushes the paper package to the film cutting station. The suction hole sucks up the packaging bag at the bottom of the paper package, preventing the bottom of the paper package from sliding. The pressure plate presses down on the top of the packaging bag. The negative pressure chamber of the film suction mechanism moves to the left, close to the right side of the packaging bag, and sucks up the right edge of the packaging film. The right edge of the packaging bag enters the negative pressure chamber, and the pressing plate presses down on the right edge of the packaging bag. The film suction mechanism moves to the right, pulling the right edge of the packaging bag to the right, so that the right edge of the packaging bag is away from the paper stack inside the packaging bag. At this time, the right edge of the packaging bag crosses the cutting seam 6 and is taut. This prepares for film cutting. It also prevents the cutter 17 from cutting the paper and facilitates the cutter 17 to cut the packaging bag.

[0026] Then the film is cut: the cutter 17 rises and cuts the four points A, B, C, and D of the packaging bag. Point A is located at the junction of the front and top surfaces of the packaging bag. Point B is located at the junction of the front and bottom of the packaging bag. Point C is located at the junction of the back and bottom of the packaging bag. Point D is located at the junction of the back and top surfaces of the packaging bag. The lifting mechanism 18 and the translation mechanism 19 operate, causing the cutter 17 to rise and cut the four points ABCD of the packaging bag. The cutting sequence of the cutter 17 is ABCD, and the trajectory of the cutter 17 is U-shaped. After cutting, the right edge of the packaging bag is only connected to the top surface of the packaging bag body. Then, the lifting cylinder 16 retracts, and the film suction mechanism, holding the right edge of the packaging film, rises to a height higher than the paper package. The paper pushing mechanism 5 moves to the right side of the film removal station, pushing the paper stack out of the packaging bag and out of the film removal station. The suction hole leaves the packaging bag on the conveyor table 2, thus separating the paper stack and the packaging bag. The packaging bag is then collected by the film receiving mechanism in the next process.

[0027] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A paper package separation device that allows opening of a moisture-proof packaging film for printed paper, characterized in that, The system includes a frame (1), a conveyor (2), a film suction assembly (3), a film cutting assembly (4), and a paper pushing mechanism (5). The conveyor (2) has a film removal station and a cutting slit (6) on the right side of the film removal station. The film suction assembly (3) and the film cutting assembly (4) are mounted on the frame (1). The film suction assembly (3) includes a negative pressure chamber (7) and an air intake (8). The negative pressure chamber (7) is located on the right side of the film removal station and above the conveyor (2). The air intake (8) is located on the side wall of the housing of the negative pressure chamber (7) and faces the film removal station. The film cutting assembly (4) is located below the workbench. The working end of the film cutting assembly (4) can extend through the cutting slit (6) onto the conveyor (2). The paper pushing mechanism (5) is located on the conveyor (2) and separates the paper from the open packaging bag.

2. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 1, characterized in that, The negative pressure chamber (7) is also provided with a pressing mechanism, which includes a pressing cylinder (9), a pressing plate (10) and a support plate (11). The support plate (11) is fixed in the negative pressure chamber (7) and connected to the air intake (8). The pressing plate (10) is located above the support plate (11). The cylinder barrel and cylinder rod of the pressing cylinder (9) are respectively fixed to the top wall of the negative pressure chamber (7) and the pressing plate (10).

3. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 2, characterized in that, A paper pressing mechanism is also provided. The paper pressing mechanism is located above the film removal station. The paper pressing mechanism includes a paper pressing cylinder (12) and a pressure plate (13). The paper pressing cylinder (12) is installed on the frame (1). The cylinder rod of the paper pressing cylinder (12) is connected to the top surface of the pressure plate (13).

4. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 3, characterized in that, It also includes a connecting frame (14), a push-pull cylinder (15) and a lifting cylinder (16). The cylinder barrel and cylinder rod of the push-pull cylinder (15) are fixedly connected to the connecting frame (14) and the housing of the negative pressure chamber (7), respectively. The lifting cylinder (16) is arranged longitudinally, and the cylinder barrel and cylinder rod of the lifting cylinder (16) are fixedly connected to the frame (1) and the connecting frame (14), respectively.

5. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 4, characterized in that, The film cutting assembly (4) includes a cutter (17), a lifting mechanism (18), and a translation mechanism (19). The cutter holder of the cutter (17) is installed on the moving end of the lifting mechanism (18). The fixed end of the lifting mechanism (18) is fixedly connected to the moving end of the translation mechanism (19). The fixed end of the translation mechanism (19) is fixedly connected to the frame (1). The lifting mechanism (18) drives the cutter (17) to rise and fall. The cutter (17) can extend through the cutting seam (6) to the top of the conveyor table (2).

6. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 5, characterized in that, The paper pushing mechanism (5) includes a negative pressure adsorption mechanism, a push plate (20) and a push cylinder (21). The push cylinder (21) is installed on the edge of the conveyor table (2) and is connected to the push plate (20). The negative pressure adsorption mechanism includes a negative pressure chamber (22) and a negative pressure suction hole (23). The negative pressure suction hole (23) is opened on the table surface of the conveyor table (2). The negative pressure chamber (22) is located under the conveyor table (2) and the negative pressure suction hole (23) is connected to the negative pressure chamber (22).

7. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 6, characterized in that, It is also provided with a push-pull guide mechanism, which includes a push-pull guide block (24) and a push-pull guide rail (25). The push-pull guide block (24) and the push-pull guide rail (25) are matched. The push-pull guide rail (25) is fixed on the frame (1). The push-pull guide block (24) is fixed to the bottom of the connecting frame (14).

8. The paper package separation device for opening the moisture-proof packaging film of printed paper as described in claim 7, characterized in that, It is also provided with a lifting guide mechanism, which includes a lifting guide block (26) and a lifting guide rail (27). The lifting guide block (26) and the lifting guide rail (27) are matched. The lifting guide rail (27) is fixed on the side of the connecting frame (14). The lifting guide block (26) is fixed to the side wall of the shell of the negative pressure chamber (7).

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