Smooth treatment device for composite paperboard package

Abstract

The utility model discloses a composite paperboard packaging smoothing processing device, which relates to the technical field of composite paperboard processing, and comprises an operation table, a through hole is arranged at the top end of the operation table, a support is in threaded connection with the top end of the operation table, the support is positioned on the inner side of the through hole, a telescopic air cylinder is arranged at the top end of the support, and the telescopic air cylinder is positioned on the inner side of the through hole. A pressing plate is slidably connected to the inner wall of the support. By the adoption of the structure, a paperboard is placed on the limiting plate, the telescopic air cylinder is started to limit the paperboard through the limiting frame, then a user can pull the limiting plate according to the sliding principle, and the abrasive paper at the top end of the limiting plate can effectively grind and polish the surface of the paperboard; when the paperboard processing device is used, a user pulls the limiting plate to the position where the whole through opening is exposed, the paperboard can fall onto the collecting plate through the through opening, then the user can directly place and process a second paperboard, and therefore the working efficiency of paperboard processing can be effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of composite paperboard processing, in particular to a composite paperboard packaging smooth processing device. Background Art

[0002] Composite paperboard is a material made of multiple layers of paperboard. In addition to the basic characteristics of paperboard, it can also increase rigidity and compressive resistance. This kind of paperboard has high strength, rigidity and water resistance, so it is widely used in packaging, printing and construction. When composite paperboard is produced, there will be many burrs on its surface. Before use, the staff will remove these burrs, so the composite paperboard packaging smoothing device will be used.

[0003] A Chinese patent with publication number "CN220330827U" discloses a device for smoothing the surface of an outer packaging cardboard, comprising a central column; a grinding mechanism is assembled and connected to the central column, and the grinding mechanism includes an annular adjustment seat assembled on the central column; a plurality of grinding rod assemblies are assembled and connected to the annular adjustment seat; the grinding rod assemblies include a plurality of long grinding rods assembled on the annular adjustment seat, and the bottom of the long grinding rods is integrally formed with a curved grinding convex portion, and the curved grinding convex portion is provided with a plurality of burr scraping structures; a plurality of inner claw plates are fixedly connected to the inner side wall of the annular adjustment seat, and the inner claw plates are slidably limited on the central column.

[0004] However, this device still has some shortcomings. When processing cardboard, the user needs to install the cardboard at a specific limit position. After the cardboard processing is completed, the user needs to remove the fixed cardboard first, and then install and process another cardboard. Processing the cardboard by disassembling and assembling the cardboard back and forth will waste a lot of time, thereby reducing the work efficiency of the device itself in cardboard processing. Utility Model Content

[0005] In view of the problems mentioned in the background technology, the purpose of the utility model is to provide a composite cardboard packaging smoothing processing device to solve the problems mentioned in the background technology.

[0006] The above technical objectives of the utility model are achieved through the following technical solutions:

[0007] A composite cardboard packaging smooth processing device comprises an operating table, a through opening is provided at the top of the operating table, a bracket is threadedly connected to the top of the operating table, the bracket is located on the inner side of the through opening, a telescopic cylinder is installed at the top of the bracket, a pressing plate is slidably connected to the inner wall of the bracket, the bottom end of the telescopic cylinder is fixedly connected to the top of the pressing plate, the bottom end of the pressing plate is fixedly connected to a limiting frame, a strip opening is provided at the front side of the operating table, the strip opening is communicated with the through opening, a limiting plate is slidably connected to the inner wall of the strip opening, sandpaper is pasted on the top of the limiting plate, the sandpaper covers the top of the limiting plate, the position of the sandpaper is symmetrical to the position of the pressing plate, a collecting trough is provided at the front side of the operating table, the collecting trough is communicated with the through opening, the inner bottom end of the collecting trough is slidably connected to A collecting plate is connected, and a rubber pad is fixedly connected to the top of the collecting plate. The rubber pad covers the top of the collecting trough. A protective door is slidably connected to the front side of the operating table. The cardboard is placed on the limit plate. The telescopic cylinder can be started to press the pressing plate down, and its limit frame can limit the cardboard. Then the user can pull the limit plate through the sliding principle, and the sandpaper on the top of the limit plate can effectively grind and polish the surface of the cardboard. When the cardboard is polished, the user pulls the limit plate to the position where the entire opening is exposed, and the cardboard will fall onto the collecting plate through the opening. Then the user can directly place and process the second cardboard, which improves the unloading efficiency while also improving the overall cardboard processing efficiency of the device.

[0008] As a preferred technical solution, a fixing plate is fixedly connected to the outer wall of the bracket, the bottom end of the fixing plate is abutted against the top of the operating table, a screw hole is opened at the top of the fixing plate, the screw holes penetrate the top of the fixing plate and the operating table, the inner side of the screw hole is threadedly connected with a bolt, the bottom end of the bolt is threadedly connected to the inside of the operating table through the screw hole, and the bracket is threadedly connected to the top of the operating table through the screw hole and the bolt. The position of the bracket can be effectively limited and fixed through the bolt and the screw hole. When the bracket needs to be disassembled, the bolt is unscrewed out of the screw hole, and then the bracket is pulled out of the opening, thereby achieving the purpose of facilitating disassembly and assembly of the bracket.

[0009] As a preferred technical solution, a first sliding groove matching the pressure plate is provided on the inner wall of the bracket, and the pressure plate is slidably connected to the inner wall of the bracket through the first sliding groove. A telescopic rod is fixedly connected to the top of the pressure plate, and the telescopic rod is fixedly connected to the four sides of the top of the pressure plate near the corners. The top of the telescopic rod is fixedly connected to the bottom end of the bracket. By opening the first sliding groove, the moving position of the pressure plate can be effectively limited, thereby improving the stability of the position adjustment of the pressure plate. The telescopic rod can also further improve the stability of the movement of the pressure plate without hindering the movement of the pressure plate, thereby avoiding the angle deviation of the pressure plate.

[0010] As a preferred technical solution, a second sliding groove matching the limit plate is opened on the inner wall of the strip mouth, and the limit plate is slidably connected to the inner wall of the strip mouth through the second sliding groove. The limit plate covers the inner side of the strip mouth. By opening the second sliding groove, it is convenient to effectively limit the moving position of the limit plate, thereby improving the stability of the limit plate position movement.

[0011] As a preferred technical solution, a third slide groove matching the protective door is provided on the front side of the operating table, and the protective door is slidably connected to the front side of the operating table through the third slide groove. The protective door covers the front side of the collecting trough, and a handle is fixedly connected to the front side of the protective door. The shape of the handle is concave, and the shape of the handle corner is arc-shaped. A slot is provided on one side of the protective door, and a plug plate matching the slot is fixedly connected to the other side of the protective door. The position of the plug plate is symmetrical to that of the slot. The third slide groove is provided to facilitate the sliding of the protective door, and the handle can provide the user with a grabbing point. The purpose of conveniently opening and closing the protective door can be achieved by pulling the protective door with the handle. When the plug plate is inserted into the slot, the position of the protective door will be effectively limited, thereby preventing the protective door from being displaced.

[0012] As a preferred technical solution, a rectangular opening is provided on the front side of the protective door, the rectangular opening passes through the protective door, the rectangular opening is communicated with the inner side of the collecting trough, a protective glass is fixedly connected to the inner side of the rectangular opening, the protective glass covers the inner side of the rectangular opening, and through the opening of the rectangular opening, the user can directly view the inner side of the collecting trough through the protective glass, thereby facilitating the user to observe the status of cardboard collection at all times.

[0013] As a preferred technical solution, a fourth slide groove matching the collecting plate is provided at the inner bottom end of the collecting trough, and the collecting plate is slidably connected to the inner bottom end of the collecting trough through the fourth slide groove. The collecting plate covers the inner bottom end of the collecting trough, and a handle is fixedly connected to the front side of the collecting plate. The shape of the handle is concave, and the shape of the corners of the handle is arc-shaped. The fourth slide groove is provided to facilitate the sliding of the collecting plate, and the handle can provide the user with a grabbing point. The collecting plate can be pulled open by the handle to achieve the purpose of quickly removing the cardboard.

[0014] As a preferred technical solution, a power supply module is installed on the top of the bracket, and a control module is installed on the top of the operating table. The power supply module is connected to the control module and the telescopic cylinder circuit, and the control module is electrically connected to the telescopic cylinder. Through the control module, the user can effectively control the operation of the telescopic cylinder, which is more conducive to the user's operation of the device itself.

[0015] In summary, the utility model mainly has the following beneficial effects:

[0016] First, when in use, place the cardboard on the limit plate, start the telescopic cylinder to adjust the position of the pressing plate, and its limit frame can limit the cardboard. Then the user can pull the limit plate through the sliding principle. At this time, the sandpaper and the surface of the cardboard to be processed are in a state of contact. The sandpaper on the top of the limit plate can effectively grind and polish the surface of the cardboard. When the cardboard is polished, the user pulls the limit plate to the position where the entire opening is exposed, and the cardboard will fall through the opening onto the collection plate. Then the user can directly place the second cardboard for processing, thereby effectively improving the work efficiency of cardboard processing;

[0017] Second, because the bracket is fixed by the thread principle, when the bracket needs to be removed, the bolt can be screwed out of the screw hole. When the bracket is removed, the electrical equipment on the bracket will also be taken out together. While facilitating the disassembly and assembly of the bracket, it is also more conducive to the user's later maintenance of the electrical equipment on the bracket. Due to the existence of the telescopic rod, the telescopic rod can effectively limit the angle of movement of the pressure plate without hindering the adjustment of the height of the pressure plate. While improving the stability of the movement of the pressure plate, it can also avoid the angle deviation of the pressure plate when it moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the utility model;

[0019] Figure 2 It is a schematic diagram of the support structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the inner structure of the through-port of the utility model;

[0021] Figure 4 It is a schematic diagram of the plane structure of the utility model.

[0022] Figure numerals: 1. operating table, 2. through opening, 3. bracket, 4. fixing plate, 5. screw hole, 6. bolt, 7. telescopic cylinder, 8. pressure plate, 9. first slide groove, 10. telescopic rod, 11. limit frame, 12. power supply module, 13. control module, 14. strip opening, 15. limit plate, 16. sandpaper, 17. second slide groove, 18. collecting groove, 19. third slide groove, 20. protective door, 21. rectangular opening, 22. protective glass, 23. plug-in plate, 24. handle, 25. slot, 26. fourth slide groove, 27. collecting plate, 28. rubber pad, 29. handle. DETAILED DESCRIPTION

[0023] refer to Figures 1 to 4A composite paperboard packaging smoothing processing device of this embodiment includes an operating table 1, a through hole 2 is opened at the top of the operating table 1, a bracket 3 is threadedly connected to the top of the operating table 1, the bracket 3 is located on the inner side of the through hole 2, a telescopic cylinder 7 is installed on the top of the bracket 3, a pressing plate 8 is slidably connected to the inner wall of the bracket 3, the bottom end of the telescopic cylinder 7 is fixedly connected to the top of the pressing plate 8, the bottom end of the pressing plate 8 is fixedly connected to the limited position frame 11, and a strip opening 14 is opened on the front side of the operating table 1, and the strip opening 14 The strip-shaped opening 14 is connected to the through-port 2, and a limiting plate 15 is slidably connected to the inner wall thereof. A sandpaper 16 is pasted on the top of the limiting plate 15, and the sandpaper 16 covers the top of the limiting plate 15. The position of the sandpaper 16 is symmetrical to the position of the pressing plate 8. A collecting groove 18 is provided on the front side of the operating table 1, and the collecting groove 18 is connected to the through-port 2. A collecting plate 27 is slidably connected to the inner bottom end of the collecting groove 18, and a rubber pad 28 is fixedly connected to the top of the collecting plate 27, and the rubber pad 28 covers the top of the collecting groove 18. The front side of the operating table 1 is slidably connected with a protective door 20. When in use, the cardboard is placed on the limiting plate 15, and the telescopic cylinder 7 is started to adjust the position of the pressing plate 8. The limiting frame 11 can limit the cardboard, and then the user can pull the limiting plate 15 through the sliding principle. At this time, the sandpaper 16 and the surface of the cardboard to be processed are in a state of being in contact with each other. The sandpaper 16 on the top of the limiting plate 15 can effectively grind and polish the surface of the cardboard. When the cardboard is polished, the user pulls the limiting plate 15 away, and the through hole 2 will be exposed. The cardboard can fall onto the collecting plate 27 through the through hole 2. The rubber pad 28 has good anti-slip ability and rubber shock absorption ability. While protecting the cardboard, the processed cardboard can also be collected uniformly. The protective door 20 can seal the front side of the collecting trough 18, thereby preventing the cardboard from falling. Then the user can directly place and process the second cardboard, thereby effectively improving the work efficiency of cardboard processing.

[0024] refer to Figures 1 to 3 A fixing plate 4 is fixedly connected to the outer wall of the bracket 3, and the bottom end of the fixing plate 4 is in contact with the top of the operating table 1. A screw hole 5 is opened at the top of the fixing plate 4, and the screw hole 5 passes through the fixing plate 4 and the top of the operating table 1. The inner side of the screw hole 5 is threadedly connected with a bolt 6, and the bottom end of the bolt 6 is threadedly connected to the inside of the operating table 1 through the screw hole 5. The bracket 3 is threadedly connected to the top of the operating table 1 through the screw hole 5. Because the bracket 3 is fixed by the thread principle, when the bracket 3 needs to be disassembled, the bolt 6 can be screwed out of the screw hole 5. When the bracket 3 is disassembled, the electrical equipment on the bracket 3 will also be taken out together. While achieving the convenience of disassembling and assembling the bracket 3, it is also more conducive to the user to perform maintenance and processing on the electrical equipment on the bracket 3 in the later stage.

[0025] refer to Figure 1 and Figure 2The first slide groove 9 is provided on the inner wall of the bracket 3 to match the pressing plate 8. The pressing plate 8 is slidably connected to the inner wall of the bracket 3 through the first slide groove 9. The top of the pressing plate 8 is fixedly connected with a telescopic rod 10. The telescopic rod 10 is fixedly connected to the four sides of the top of the pressing plate 8 near the corners. The top of the telescopic rod 10 is fixedly connected to the bottom end of the bracket 3. Due to the opening of the first slide groove 9, the position of the pressing plate 8 can be effectively limited, thereby effectively improving the stability of the position movement of the pressing plate 8. The telescopic rod 10 includes a movable rod and a sleeve rod. The movable rod is sleeved on the inner side of the sleeve rod. The bottom end of the sleeve rod is fixedly connected to the top of the pressing plate 8. The top end of the movable rod is fixedly connected to the bottom end of the bracket 3. Due to the existence of the telescopic rod 10, the telescopic rod 10 can effectively limit the angle of movement of the pressing plate 8 without interfering with the adjustment of the height of the pressing plate 8. While achieving the goal of improving the stability of the position movement of the pressing plate 8, it can also avoid the situation where the angle of the pressing plate 8 is offset when it moves.

[0026] refer to Figure 3 A second slide groove 17 matching the limit plate 15 is provided on the inner wall of the strip opening 14. The limit plate 15 is slidably connected to the inner wall of the strip opening 14 through the second slide groove 17. The limit plate 15 covers the inner side of the strip opening 14. Due to the opening of the second slide groove 17, the sliding position of the limit plate 15 can be effectively limited. While improving the stability of the position movement of the limit plate 15, it can also avoid the situation where the limit plate 15 moves at an angle.

[0027] refer to Figure 1 and Figure 4A third slide groove 19 matching the protective door 20 is provided on the front side of the operating table 1. The protective door 20 is slidably connected to the front side of the operating table 1 through the third slide groove 19. The protective door 20 covers the front side of the collecting tank 18. A handle 24 is fixedly connected to the front side of the protective door 20. The shape of the handle 24 is concave, and the shape of the corner of the handle 24 is arc-shaped. A slot 25 is provided on one side of the protective door 20. A plug-in plate 23 matching the slot 25 is fixedly connected to the other side of the protective door 20. The position of the plug-in plate 23 is symmetrical to the position of the slot 25. A rectangular opening 21 is provided on the front side of the protective door 20. The rectangular opening 21 passes through the protective door 20. The rectangular opening 21 communicates with the inner side of the collecting tank 18. A protective glass 22 is fixedly connected to the inner side of the rectangular opening 21. The protective glass 22 covers the inner side of the rectangular opening 21. Due to the opening of the third slide slot 19, it is convenient to adjust the position of the protective door 20. The protective door 20 is divided into two, each covering half of the front side of the collection slot 18. The handle 24 can also provide the user with a gripping point. By pulling the protective door 20 with the handle 24, the purpose of conveniently opening and closing the protective door 20 can be achieved. When the plug plate 23 is inserted into the slot 25, the positions of the two protective doors 20 will be plugged and fixed, so the positions of the two protective doors 20 can also be effectively limited. Due to the opening of the rectangular opening 21, the user can also directly view the inner side of the collection slot 18 through the protective glass 22 without opening the protective door 20, so that the user can observe the status of the cardboard collection inside the collection slot 18 at all times, and at the same time effectively improve the protection of cardboard collection.

[0028] refer to Figure 3 and Figure 4 A fourth slide groove 26 matching the collecting plate 27 is provided at the inner bottom end of the collecting trough 18. The collecting plate 27 is slidably connected to the inner bottom end of the collecting trough 18 through the fourth slide groove 26. The collecting plate 27 covers the inner bottom end of the collecting trough 18. A handle 29 is fixedly connected to the front side of the collecting plate 27. The shape of the handle 29 is concave, and the shape of the corner of the handle 29 is arc-shaped. Due to the opening of the fourth slide groove 26, it is convenient to adjust the position of the collecting plate 27. The handle 29 can provide the user with a gripping point. It will be more convenient and quick to pull the collecting plate 27 through the handle 29. When it is necessary to take the cardboard out of the collecting trough 18, the user can directly pull the collecting plate 27 out of the collecting trough 18 through the fourth slide groove 26, which is convenient for the user to uniformly transport the collected cardboard later.

[0029] refer to Figure 1A power supply module 12 is installed on the top of the bracket 3, and a control module 13 is installed on the top of the operating table 1. The power supply module 12 is connected to the control module 13 and the telescopic cylinder 7 circuit, and the control module 13 is electrically connected to the telescopic cylinder 7. Due to the existence of the power supply module 12, the electrical equipment on the device can be effectively energized, so that the electrical equipment can operate normally. The control module 13 can effectively control the operation of the telescopic cylinder 7, and it will be more convenient and quick for the user to control the operation of the telescopic cylinder 7 through the control module 13.

[0030] Principle and advantages of use: When in use, the limit plate 15 can be used to place the composite cardboard to be processed, and starting the telescopic cylinder 7 can adjust the position of the pressing plate 8, and the limit frame 11 can limit the cardboard. Then the user can pull the limit plate 15 through the sliding principle. At this time, the sandpaper 16 and the surface of the cardboard to be processed are in a state of contact. The sandpaper 16 on the top of the limit plate 15 can effectively grind and polish the surface of the cardboard. When the cardboard is polished, the user pulls the limit plate 15 away, and the through hole 2 will be exposed. The cardboard can fall onto the collection plate 27 through the through hole 2. The rubber pad 28 has good anti-slip ability and rubber shock absorption ability. While protecting the cardboard, the processed cardboard can also be collected uniformly. The protective door 2 0 can seal the front side of the collecting tank 18, so as to prevent the cardboard from falling, and then the user can directly place the second cardboard for processing. Because the bracket 3 is fixed by the threaded principle, when the bracket 3 needs to be disassembled, the bolt 6 can be screwed out of the screw hole 5. When the bracket 3 is disassembled, the electrical equipment on the bracket 3 will also be taken out together. While achieving the convenience of disassembling and assembling the bracket 3, it is also more conducive to the user to perform maintenance on the electrical equipment on the bracket 3 in the later stage. Due to the opening of the first sliding groove 9, the position of the pressing plate 8 can be effectively limited, thereby effectively improving the stability of the position movement of the pressing plate 8. Due to the existence of the telescopic rod 10, the telescopic rod 10 can be adjusted without hindering the height adjustment of the pressing plate 8. The angle of the position movement of the pressure plate 8 is effectively limited, and while improving the stability of the position movement of the pressure plate 8, the angle deviation of the pressure plate 8 when it moves can also be avoided. Due to the opening of the second slide groove 17, the sliding position of the limit plate 15 can be effectively limited. While improving the stability of the position movement of the limit plate 15, the angle deviation of the position movement of the limit plate 15 can also be avoided. Due to the opening of the third slide groove 19, it is convenient to adjust the position of the protective door 20. The protective door 20 is divided into two, which respectively covers half of the front side of the collection tank 18. The handle 24 can also provide the user with a gripping point. The purpose of conveniently opening and closing the protective door 20 can be achieved by pulling the protective door 20 with the handle 24. When the plug plate 23 is inserted into the slot 25, its two protective The position of the guard door 20 will be plugged and fixed, so the position of the two guard doors 20 can be effectively limited. Due to the opening of the rectangular opening 21, the user can also directly view the inner side of the collection tank 18 through the protective glass 22 without opening the guard door 20, so that it is convenient for the user to observe the cardboard collection status inside the collection tank 18 at all times, and at the same time, it also effectively improves the protection of cardboard collection. Due to the opening of the fourth slide 26, it is convenient to adjust the position of the collection plate 27, and its handle 29 can provide the user with a gripping point. It is more convenient and quick to pull the collection plate 27 through the handle 29. When the cardboard needs to be taken out of the collection tank 18, the user can directly pull the collection plate 27 out of the collection tank 18 through the fourth slide 26.Therefore, it is convenient for users to uniformly transfer the collected cardboards later.

Claims

1. A composite paperboard packaging smoothing device, comprising an operating table (1), characterized in that: The top of the operating table (1) is provided with a through opening (2), the top of the operating table (1) is threadedly connected with a bracket (3), the bracket (3) is located on the inner side of the through opening (2), a telescopic cylinder (7) is installed on the top of the bracket (3), a pressing plate (8) is slidably connected to the inner wall of the bracket (3), the bottom end of the telescopic cylinder (7) is fixedly connected to the top of the pressing plate (8), the bottom end of the pressing plate (8) is fixedly connected to a limited position frame (11), a strip opening (14) is provided on the front side of the operating table (1), the strip opening (14) is communicated with the through opening (2), and the inner wall of the strip opening (14) is slidably connected to the limited position frame (11). A positioning plate (15) is provided, the top of the positioning plate (15) is pasted with sandpaper (16), the sandpaper (16) covers the top of the positioning plate (15), the position of the sandpaper (16) is symmetrical with the position of the pressure plate (8), a collecting groove (18) is provided on the front side of the operating table (1), the collecting groove (18) is communicated with the through port (2), the inner bottom end of the collecting groove (18) is slidably connected with a collecting plate (27), the top of the collecting plate (27) is fixedly connected with a rubber pad (28), the rubber pad (28) covers the top of the collecting groove (18), and a protective door (20) is slidably connected to the front side of the operating table (1).

2. The composite paperboard packaging smoothing device according to claim 1, characterized in that: A fixing plate (4) is fixedly connected to the outer wall of the bracket (3), the bottom end of the fixing plate (4) is in contact with the top end of the operating table (1), a screw hole (5) is provided at the top end of the fixing plate (4), the screw hole (5) penetrates the fixing plate (4) and the top end of the operating table (1), a bolt (6) is threadedly connected to the inner side of the screw hole (5), the bottom end of the bolt (6) is threadedly connected to the inside of the operating table (1) through the screw hole (5), and the bracket (3) is threadedly connected to the top end of the operating table (1) through the screw hole (5) and the bolt (6).

3. The composite paperboard packaging smoothing device according to claim 1, characterized in that: The inner wall of the bracket (3) is provided with a first sliding groove (9) matching with the pressing plate (8); the pressing plate (8) is slidably connected to the inner wall of the bracket (3) through the first sliding groove (9); the top end of the pressing plate (8) is fixedly connected with a telescopic rod (10); the telescopic rod (10) is fixedly connected to the four sides of the top end of the pressing plate (8) near the corners; the top end of the telescopic rod (10) is fixedly connected to the bottom end of the bracket (3).

4. The composite paperboard packaging smoothing device according to claim 1, characterized in that: A second sliding groove (17) matching the limiting plate (15) is provided on the inner wall of the strip-shaped opening (14); the limiting plate (15) is slidably connected to the inner wall of the strip-shaped opening (14) via the second sliding groove (17); and the limiting plate (15) covers the inner side of the strip-shaped opening (14).

5. The composite paperboard packaging smoothing device according to claim 1, characterized in that: The front side of the operating table (1) is provided with a third slide groove (19) matching with the protective door (20); the protective door (20) is slidably connected to the front side of the operating table (1) through the third slide groove (19); the protective door (20) covers the front side of the collecting tank (18); the front side of the protective door (20) is fixedly connected with a handle (24); the shape of the handle (24) is concave; the shape of the corner of the handle (24) is arc-shaped; a slot (25) is provided on one side of the protective door (20); the other side of the protective door (20) is fixedly connected with a plug plate (23) matching with the slot (25); the position of the plug plate (23) is symmetrical with the position of the slot (25).

6. The composite paperboard packaging smoothing device according to claim 5, characterized in that: A rectangular opening (21) is provided on the front side of the protective door (20), the rectangular opening (21) passes through the protective door (20), the rectangular opening (21) is communicated with the inner side of the collecting tank (18), a protective glass (22) is fixedly connected to the inner side of the rectangular opening (21), and the protective glass (22) covers the inner side of the rectangular opening (21).

7. The composite paperboard packaging smoothing device according to claim 1, characterized in that: The inner bottom end of the collecting trough (18) is provided with a fourth sliding groove (26) matching with the collecting plate (27); the collecting plate (27) is slidably connected to the inner bottom end of the collecting trough (18) through the fourth sliding groove (26); the collecting plate (27) covers the inner bottom end of the collecting trough (18); a handle (29) is fixedly connected to the front side of the collecting plate (27); the shape of the handle (29) is concave; and the shape of the corner of the handle (29) is arc-shaped.

8. The composite paperboard packaging smoothing device according to claim 1, characterized in that: A power supply module (12) is installed at the top of the bracket (3), and a control module (13) is installed at the top of the operating table (1). The power supply module (12) is connected to the control module (13) and the telescopic cylinder (7) in an electrical circuit, and the control module (13) is electrically connected to the telescopic cylinder (7).

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