Multi-layer pressing device for corrugated boards

Abstract

The utility model relates to the technical field of corrugated board multi-layer pressing, and discloses a corrugated board multi-layer pressing device which comprises a placing table, a sliding cavity is formed in the placing table, a supporting plate is fixedly connected to the top end in the sliding cavity, an electric push rod is fixedly connected to the bottom end of the supporting plate, and the electric push rod is fixedly connected to the bottom end of the sliding cavity. The driving end of the electric push rod is fixedly connected with a transmission block, the top end of the exterior of the transmission block is fixedly connected with a plurality of connecting blocks, the interiors of the connecting blocks are fixedly connected with supporting rods, the exteriors of the supporting rods are rotatably connected with rotating plates, and the other ends of the rotating plates are rotatably connected with L-shaped blocks. According to the utility model, the accurate relative positions of the multiple layers of paperboards can be kept before the lamination, and the correct alignment of the areas which should be uniformly coated with glue and tightly attached originally is ensured, so that all layers of paperboards can be tightly combined together after the lamination, and the overall structural strength and stability of the corrugated paperboards are improved.

Description

Technical Field

[0001] This utility model relates to the field of corrugated cardboard multilayer pressing technology, and in particular to a corrugated cardboard multilayer pressing device. Background Technology

[0002] Corrugated cardboard is a multi-layered paperboard made of one or more layers of corrugated core paper and one or two layers of flat paper (face paper and liner paper) bonded together with glue and pressed. This special structure gives corrugated cardboard good cushioning performance, compressive strength and stiffness, making it a primary material for making packaging containers (such as cartons and boxes). Before being made into packaging containers, it needs to be pressed and shaped using a corrugated cardboard multi-layer pressing device. This device is used to tightly bond multiple layers of corrugated cardboard together by applying pressure. It is one of the key pieces of equipment in the corrugated cardboard production process, ensuring the structural strength and stability of the corrugated cardboard.

[0003] Its working principle is as follows: the hydraulic cylinder pushes the pressure plate downward, reducing the distance between the layers of paper. For cardboard coated with glue, the pressure causes the glue to be evenly distributed between the papers, filling the tiny gaps between the papers and enhancing the adhesion between the papers. At the same time, the pressure also compresses and fixes the shape of the corrugated core paper to a certain extent, making it better adhere to the face paper and liner paper, thus making the entire corrugated cardboard structure more compact and stable.

[0004] In the prior art, corrugated cardboard is prone to positional misalignment during the lamination process. When the relative positions of multiple layers of cardboard change, the areas that should be evenly coated with glue and tightly bonded will not be properly aligned. In subsequent use, if the packaged items are subjected to certain external forces or bumps during transportation, the corrugated cardboard is prone to delamination, which will reduce the overall structural strength. Therefore, a multi-layer corrugated cardboard lamination device is proposed to solve the above problems. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a multi-layer pressing device for corrugated cardboard, which aims to improve the problem of positional displacement of corrugated cardboard during the pressing process in the prior art.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A corrugated cardboard multi-layer pressing device includes a placement platform with a sliding cavity inside. A support plate is fixedly connected to the top of the sliding cavity, and an electric push rod is fixedly connected to the bottom of the support plate. A transmission block is fixedly connected to the driving end of the electric push rod, and multiple connecting blocks are fixedly connected to the top of the transmission block. A support rod is fixedly connected inside each of the multiple connecting blocks, and a rotating plate is rotatably connected to the outside of the support rod. An L-shaped block is rotatably connected to the other end of the rotating plate. Multiple sliding grooves are opened at the top of the placement platform, and a clamping plate is fixedly connected to the top of the L-shaped block. A pressing drive assembly is fixedly connected to the outside of the placement platform.

[0008] As a further description of the above technical solution:

[0009] The drive assembly includes a connecting frame, the connecting frame being fixedly connected to the outer top of the placement platform, and a cylinder being fixedly connected to the top of the connecting frame.

[0010] As a further description of the above technical solution:

[0011] The cylinder's drive end is fixedly connected to a transmission plate, the transmission plate's interior is fixedly connected to multiple screws, each screw is fitted with a spring, the screw's bottom end is fixedly connected to a driven plate, and the screw's top and bottom ends are threaded with nuts. The connecting frame's interior left and right sides are fixedly connected to guide grooves, the transmission plate's exterior left and right sides are fixedly connected to guide blocks, and the driven plate's bottom end is fixedly connected to a pressure plate.

[0012] As a further description of the above technical solution:

[0013] The transmission block is externally slidably connected to the inside of the sliding cavity, and the rotating plate is externally rotatably connected to the inside of the sliding cavity;

[0014] As a further description of the above technical solution:

[0015] The L-shaped block is externally slidably connected to the top of the support plate, and the clamping plate is externally slidably connected to the inside of the sliding groove;

[0016] As a further description of the above technical solution:

[0017] The L-shaped block is internally slidably connected to the inside of the sliding cavity, and a rubber gasket is fixedly connected to the adjacent side of each pair of clamping plates;

[0018] As a further description of the above technical solution:

[0019] The guide block is externally slidably connected to the inside of the guide groove, the outer part of the top nut contacts the top part of the transmission plate, and the outer part of the bottom nut contacts the top part of the driven plate.

[0020] As a further description of the above technical solution:

[0021] One end of the spring is fixedly connected to the bottom end of the transmission plate, and the other end of the spring is fixedly connected to the top end of the driven plate.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the corrugated cardboard is placed on the placement table, and then the electric push rod is activated to drive the transmission block to move downward, which in turn drives the L-shaped block to slide. Then, the transmission clamping plate, together with the rubber pad, clamps and positions the corrugated cardboard. This allows the multi-layer cardboard to maintain an accurate relative position before pressing, ensuring that the areas that should be evenly coated with glue and tightly bonded are correctly aligned. This allows the cardboard layers to be tightly bonded together after pressing, improving the overall structural strength and stability of the corrugated cardboard.

[0024] 2. In this utility model, by starting the cylinder, the transmission plate is driven to slide, and then the transmission is sent to the pressure plate to press the corrugated cardboard. During the pressing process, the spring will adaptively compress according to the thickness of the corrugated cardboard, and then drive the pressure plate to make corresponding adjustments. It can automatically adapt to changes in cardboard thickness, greatly reduce downtime for adjustment during production, improve the operating efficiency of the equipment and the continuity of production, thereby improving the overall production efficiency. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of the corrugated cardboard multilayer pressing device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the placement platform structure of the corrugated cardboard multilayer pressing device proposed in this utility model;

[0027] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0028] Figure 4 for Figure 2 Enlarged view of point B in the middle.

[0029] Legend:

[0030] 1. Placement platform; 2. Sliding cavity; 3. Support plate; 4. Electric push rod; 5. Transmission block; 6. Connecting block; 7. Support rod; 8. Rotating plate; 9. L-shaped block; 10. Sliding groove; 11. Clamping plate; 12. Rubber gasket; 13. Connecting frame; 14. Cylinder; 15. Transmission plate; 16. Screw; 17. Spring; 18. Driven plate; 19. Nut; 20. Guide groove; 21. Guide block; 22. Pressure plate. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figures 1 to 3This utility model provides an embodiment of a corrugated cardboard multi-layer pressing device, including a placement platform 1, which is the supporting part of the entire device. A sliding cavity 2 is provided inside the placement platform 1, providing installation space for a support plate 3 and an electric push rod 4. The support plate 3 is fixedly connected to the top of the sliding cavity 2, and the electric push rod 4 is fixedly connected to the bottom of the support plate 3, enabling a transmission block 5 to slide within the sliding cavity 2. The drive end of the electric push rod 4 is fixedly connected to the transmission block 5, and the external end of the transmission block 5 is slidably connected inside the sliding cavity 2. The top of the external end of the transmission block 5 is fixedly connected to... There are multiple connecting blocks 6, which provide installation space for the support rods 7. Each connecting block 6 has a support rod 7 fixedly connected inside. The support rod 7 provides a support point and a rotation axis for the rotation of the rotating plate 8. The rotating plate 8 is rotatably connected to the outside of the support rod 7. The rotating plate 8 converts the vertical movement of the transmission block 5 into the horizontal sliding of the L-shaped block 9. The outside of the rotating plate 8 is rotatably connected to the inside of the sliding cavity 2. The other end of the rotating plate 8 is rotatably connected to the L-shaped block 9. The inside of the L-shaped block 9 is slidably connected to the inside of the sliding cavity 2, and the outside of the L-shaped block 9 is slidably connected to the support plate 3. At the top, the support plate 3 provides horizontal movement guidance for the L-shaped block 9, which helps control the spacing of the clamping plates 11. Multiple sliding grooves 10 are provided at the top of the placement platform 1, guiding the sliding of the clamping plates 11 and allowing them to move along a predetermined trajectory. The clamping plates 11 are fixedly connected to the top of the L-shaped block 9, fixing the position of the cardboard and preventing it from shifting during pressing. The external parts of the clamping plates 11 are slidably connected to the inside of the sliding grooves 10, and each pair of clamping plates 11 are fixedly connected to each other on adjacent sides. There is a rubber pad 12, which can increase the friction between the clamping plate 11 and the corrugated cardboard, further enhancing the fixing effect of the cardboard, and also play a buffering and protective role to avoid damage to the surface of the cardboard during clamping. The external fixed connection of the placement platform 1 is a drive assembly for pressing. The drive assembly includes a connecting frame 13, which provides support for the cylinder 14. The external fixed connection of the connecting frame 13 is on the top of the placement platform 1, and the top of the connecting frame 13 is fixedly connected to the cylinder 14, which is the main power source in the pressing process.

[0033] Reference Figure 2 , Figure 4A transmission plate 15 is fixedly connected to the drive end of cylinder 14. The transmission plate 15 can transmit the pressure of cylinder 14. Multiple screws 16 are fixedly connected inside the transmission plate 15. The screws 16 cooperate with springs 17 and driven plate 18 to adjust the pressure. Springs 17 are sleeved on the outside of each screw 16. The springs 17 can play a buffering role during the pressing process. One end of the spring 17 is fixedly connected to the bottom end of the transmission plate 15, and the other end of the spring 17 is fixedly connected to the top end of the driven plate 18. The driven plate 18 is fixedly connected to the bottom end of the screw 16. The driven plate 18 can effectively transmit the elastic force of the spring 17 and the transmission force of the screw 16 to the pressure plate 22. Both the top and bottom ends of the outer part are threaded with nuts 19, which can adjust the preload of the spring 17. The outer part of the top nut 19 contacts the top of the transmission plate 15, and the outer part of the bottom nut 19 contacts the top of the driven plate 18. The left and right sides of the inner part of the connecting frame 13 are fixedly connected with guide grooves 20. The guide grooves 20 cooperate with guide blocks 21 to provide guidance for the up and down movement of the transmission plate 15. The left and right sides of the outer part of the transmission plate 15 are fixedly connected with guide blocks 21. The outer part of the guide blocks 21 is slidably connected to the inside of the guide grooves 20. The bottom end of the driven plate 18 is fixedly connected with a pressure plate 22. The pressure plate 22 acts directly on the corrugated cardboard, transmitting pressure to the cardboard and making the layers of cardboard tightly bonded.

[0034] Working principle: First, place the corrugated cardboard to be pressed on the placement table 1, start the electric push rod 4, the drive end of the electric push rod 4 drives the transmission block 5 to slide downward, the transmission block 5 drives the connecting block 6 to move downward in sync, and then the support rod 7 moves accordingly. Since the support rod 7 is rotatably connected to the rotating plate 8, the downward movement of the transmission block 5 will pull the rotating plate 8 to rotate. The rotation of the rotating plate 8 will drive the L-shaped block 9 to slide, thereby driving the clamping plate 11 to move in the opposite direction. The rubber pad 12 will clamp and fix the corrugated cardboard to prevent it from shifting during the pressing process.

[0035] Next, cylinder 14 is activated, and the driving end of cylinder 14 pushes the transmission plate 15 downward. The guide blocks 21 on the left and right sides of the transmission plate 15 slide in the guide groove 20 inside the connecting frame 13 to ensure the stability of the vertical downward movement of the transmission plate 15. When the transmission plate 15 moves downward, the spring 17 is compressed, and the driven plate 18 also moves downward under the combined action of the spring 17 and the transmission plate 15, driving the pressure plate 22 downward to perform a pressing operation on the corrugated cardboard that is clamped and fixed on the placement table.

[0036] After the pressing is completed, the driving end of the cylinder 14 retracts, causing the transmission plate 15 to move upward. The spring 17 resets, pushing the driven plate 18 and the pressure plate 22 to move upward and reset. Then the driving end of the electric push rod 4 retracts, causing the transmission block 5 to move upward, causing the clamping plate 11 to move in the opposite direction to release the corrugated cardboard. At this time, the pressed corrugated cardboard can be taken out from the placement table 1, completing one multi-layer pressing process of corrugated cardboard.

[0037] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-layer corrugated cardboard pressing device, comprising a placement table (1), characterized in that: The placement platform (1) has a sliding cavity (2) inside. A support plate (3) is fixedly connected to the top of the sliding cavity (2). An electric push rod (4) is fixedly connected to the bottom of the support plate (3). A transmission block (5) is fixedly connected to the driving end of the electric push rod (4). Multiple connecting blocks (6) are fixedly connected to the top of the transmission block (5). A support rod (7) is fixedly connected inside each of the multiple connecting blocks (6). A rotating plate (8) is rotatably connected to the outside of the support rod (7). An L-shaped block (9) is rotatably connected to the other end of the rotating plate (8). Multiple sliding grooves (10) are opened at the top of the placement platform (1). A clamping plate (11) is fixedly connected to the top of the L-shaped block (9). A driving assembly for pressing is fixedly connected to the outside of the placement platform (1).

2. The corrugated cardboard multilayer pressing device according to claim 1, characterized in that: The drive assembly includes a connecting frame (13), which is externally fixedly connected to the top of the placement platform (1), and a cylinder (14) is fixedly connected to the top of the connecting frame (13).

3. The corrugated cardboard multilayer pressing device according to claim 2, characterized in that: The drive end of the cylinder (14) is fixedly connected to a transmission plate (15). Multiple screws (16) are fixedly connected inside the transmission plate (15). Springs (17) are sleeved on the outside of each screw (16). A driven plate (18) is fixedly connected to the bottom outside of each screw (16). Nuts (19) are threaded to the top and bottom of each screw (16). Guide grooves (20) are fixedly connected to the left and right sides inside the connecting frame (13). Guide blocks (21) are fixedly connected to the left and right sides outside the transmission plate (15). A pressure plate (22) is fixedly connected to the bottom of the driven plate (18).

4. The corrugated cardboard multilayer pressing device according to claim 1, characterized in that: The transmission block (5) is externally slidably connected to the inside of the sliding cavity (2), and the rotating plate (8) is externally rotatably connected to the inside of the sliding cavity (2).

5. The corrugated cardboard multilayer pressing device according to claim 1, characterized in that: The L-shaped block (9) is externally slidably connected to the top of the support plate (3), and the clamping plate (11) is externally slidably connected to the inside of the sliding groove (10).

6. The corrugated cardboard multilayer pressing device according to claim 1, characterized in that: The L-shaped block (9) is slidably connected inside the sliding cavity (2), and a rubber gasket (12) is fixedly connected to the adjacent side of each pair of clamping plates (11).

7. The corrugated cardboard multilayer pressing device according to claim 3, characterized in that: The guide block (21) is externally slidably connected to the inside of the guide groove (20), the outer part of the top nut (19) is in contact with the top of the transmission plate (15), and the outer part of the bottom nut (19) is in contact with the top of the driven plate (18).

8. The corrugated cardboard multilayer pressing device according to claim 3, characterized in that: One end of the spring (17) is fixedly connected to the bottom end of the transmission plate (15), and the other end of the spring (17) is fixedly connected to the top end of the driven plate (18).

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