Automatic pressure regulating type down pressing and laminating device
By using an automatic pressure-adjusting bonding device with a parallelogram structure and pressure sensors, the problem of uneven pressure in corrugated cardboard production is solved, achieving uniform pressing and improved bonding strength of corrugated cardboard, thus improving the quality of finished products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIN HUA BAI ZHI PIN DONG GUAN YOU XIAN GONG SI
- Filing Date
- 2025-07-08
- Publication Date
- 2026-07-07
AI Technical Summary
In the existing corrugated cardboard production process, the pressure device cannot be adjusted according to the number of layers and width of the specific product, resulting in uneven pressure, which causes the corrugated core paper to collapse, the surface to be uneven, and the glue to be bonded unevenly, thus reducing the quality and pass rate of the finished cardboard.
It adopts an automatic pressure-adjusting pressing and bonding device, which forms a parallelogram structure through cantilever, pressure plate and support arm. Combined with the design of top pressure cylinder and compression spring, it realizes the parallel movement of pressure plate and constant downward pressure. It is equipped with pressure sensor for real-time adjustment.
It achieves uniform pressing of corrugated cardboard, improves bonding strength, avoids deformation, simplifies adjustment work, and ensures the quality and reliability of hot pressing.
Smart Images
Figure CN224465411U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of corrugated cardboard processing machinery, and in particular to an automatic pressure-adjusting type pressing and bonding device. Background Technology
[0002] Corrugated cardboard is a composite board made of a face paper layer bonded to a corrugated core paper. Its history dates back to the late 18th century, and its application expanded rapidly in the early 19th century due to its lightweight, low cost, versatility, ease of manufacture, and recyclability. By the early 20th century, it had become a widely used material for packaging various goods. Corrugated cardboard containers possess unique advantages in enhancing the appearance of goods and protecting their contents, making them stand out in the competition among packaging materials and a consistently popular and continuously developing major packaging material.
[0003] However, in the current corrugated board production process, the glued surface paper and corrugated core paper need to be laminated and pressed together. To meet the production needs of board with different widths and number of layers, reliance on machine functions and manual operation is inherently unstable. Existing pressure devices use an integrated design, with pressing and lifting actions occurring simultaneously, making it impossible to adjust them specifically according to the number of layers and width of the product. This leads to uneven pressure, causing problems such as corrugated core paper collapse, uneven surface, and weak or uneven internal glue adhesion. Uneven stress on the corrugated board makes it prone to deformation after lamination, ultimately reducing the quality and pass rate of the finished board, resulting in obvious defects. Utility Model Content
[0004] The technical problem to be solved by this utility model is to provide an automatic pressure-adjusting pressing and bonding device that can completely flatten and press corrugated paper in a glued state and can adjust the pressure.
[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: an automatic pressure-adjusting type pressing and bonding device, comprising a frame, a conveying table disposed on the frame, a crossbeam fixedly mounted on the frame, and a pressing assembly movably mounted on the crossbeam. The pressing assembly includes a cantilever fixedly mounted on the crossbeam, a pressure plate, and two support arms movably disposed at both ends of the cantilever. The cantilever and the pressure plate are parallel to the conveying table, and the two ends of the pressure plate are movably pivotally connected to the lower ends of the two support arms. A top-pressure cylinder is installed at the lower part of the cantilever, and a compression spring is installed at the upper part of the pressure plate. The piston rod of the top-pressure cylinder is fixedly connected to the compression spring.
[0006] Preferably, a telescopic rod is fitted in the middle of the compression spring. The lower end of the telescopic rod is pivotally connected to the pressure plate, and the upper end of the telescopic rod is fixedly connected to the outer end of the piston rod of the top pressure cylinder. The two ends of the compression spring abut against the upper and lower ends of the telescopic rod, respectively.
[0007] Preferably, the telescopic rod is provided with spring retaining rings at both the upper and lower ends, and the two ends of the compression spring abut against the two spring retaining rings respectively.
[0008] Preferably, both ends of the pressure plate are curved upwards in an arc to form guide bends.
[0009] Preferably, the conveyor table is provided with a plurality of pressure sensors corresponding to the positions of the pressure plates.
[0010] The beneficial effects of this utility model are as follows: This utility model provides an automatic pressure-adjusting down-pressing bonding device. In practical applications, after the glued surface paper and corrugated core paper are bonded together, they pass through the conveyor table. At this time, the pressing component presses down on the cardboard to ensure that the surface paper and corrugated core paper are fully pressed and bonded, improving the bonding strength of the cardboard. Because the cantilever, pressure plate, and two support arms are connected to form a parallelogram structure, the pressure plate can always remain parallel to the cantilever and conveyor table during the lifting and lowering process, thereby ensuring that the lower surface of the pressure plate is flatly pressed with the corrugated cardboard, avoiding deformation of the cardboard when local pressure is applied, resulting in high reliability and strong practicality. The design of the top pressure cylinder can be automatically adjusted according to the thickness of the corrugated cardboard, eliminating the need for disassembly and adjustment of the bonding device, greatly simplifying the adjustment work and reducing the difficulty; the design of the compression spring provides a certain amount of follow-up space for the up and down floating of the pressure plate, so that the pressure plate always maintains a relatively constant down-pressing bonding force with the corrugated cardboard, ensuring the quality of heat pressing bonding and high reliability. Attached Figure Description
[0011] Figure 1 This is a three-dimensional structural diagram of the automatic pressure-adjusting bonding device of this utility model.
[0012] Figure 2 This is a three-dimensional structural diagram of the pressing component in this utility model.
[0013] Figure 3 This is a three-dimensional structural diagram of the automatic pressure-adjusting bonding device of this utility model in conjunction with the longitudinal cutting device during actual application. Detailed Implementation
[0014] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments. The content mentioned in the embodiments is not intended to limit the present invention.
[0015] like Figures 1 to 3As shown, an automatic pressure-adjusting type pressing and bonding device includes a frame 1, a conveying table 2 disposed on the frame 1, a crossbeam 3 fixedly mounted on the frame 1, and a pressing assembly movably mounted on the crossbeam 3. The pressing assembly includes a cantilever 4 fixedly mounted on the crossbeam 3, a pressure plate 5, and two support arms 6 movably disposed at both ends of the cantilever 4. The cantilever 4 and the pressure plate 5 are parallel to the conveying table 2, and the two ends of the pressure plate 5 are movably pivotally connected to the lower ends of the two support arms 6. A top-pressure cylinder 7 is installed at the lower part of the cantilever 4, and a compression spring 8 is installed at the upper part of the pressure plate 5. The piston rod of the top-pressure cylinder 7 is fixedly connected to the compression spring 8.
[0016] In practical applications, after the glued surface paper and corrugated core paper are bonded together, they pass over the conveyor table 2. At this time, the pressing assembly presses down on the cardboard to ensure that the surface paper and corrugated core paper are fully pressed and bonded, improving the bonding strength of the cardboard. Because the cantilever 4, pressure plate 5, and two support arms 6 are connected to form a parallelogram structure, the pressure plate 5 remains parallel to the cantilever 4 and the conveyor table 2 during its lifting and lowering movements. This ensures that the lower surface of the pressure plate 5 is pressed flat against the corrugated cardboard, avoiding deformation of the cardboard due to localized pressing force, resulting in high reliability and practicality. The design of the top pressure cylinder 7 allows for automatic adjustment according to the thickness of the corrugated cardboard, eliminating the need for disassembly and adjustment of the bonding device, greatly simplifying the adjustment work and reducing its difficulty. The design of the compression spring 8 provides a certain amount of follow-up space for the up and down floating of the pressure plate 5, ensuring that the pressure plate 5 always maintains a relatively constant downward pressing force against the corrugated cardboard, guaranteeing the quality of heat pressing and bonding, and ensuring high reliability.
[0017] In this embodiment, a telescopic rod 9 is fitted in the middle of the compression spring 8. The lower end of the telescopic rod 9 is pivotally connected to the pressure plate 5, and the upper end of the telescopic rod 9 is fixedly connected to the outer end of the piston rod of the top pressure cylinder 7. The two ends of the compression spring 8 abut against the upper and lower ends of the telescopic rod 9 respectively. The design of the telescopic rod 9 can keep the spring in the direction of force and avoid lateral displacement when the spring is compressed, which is highly practical.
[0018] In this embodiment, spring retaining rings 10 are provided at both the upper and lower ends of the telescopic rod 9, and the two ends of the compression spring 8 abut against the two spring retaining rings 10 respectively, which facilitates the installation of the compression spring 8, optimizes the force on the compression spring 8, and improves the service life of the telescopic rod 9 and the compression spring 8.
[0019] In this embodiment, both ends of the pressure plate 5 are bent upwards in an arc to form guide bends 11. When the initial end of the corrugated cardboard enters the hot pressing and bonding device, the design of the guide bends 11 can effectively prevent the initial end of the corrugated cardboard from curling up, resulting in high reliability and stability.
[0020] In this embodiment, the conveyor table 2 is equipped with several pressure sensors corresponding to the positions of the pressure plate 5. These sensors are used to detect the downward pressure of the corrugated cardboard on the pressure sensors in real time, thereby indirectly monitoring the downward pressure of the pressure plate 5 on the corrugated cardboard. On the one hand, it can monitor whether the pressure plate 5 is working properly in real time. On the other hand, it can automatically adjust the extension of the top pressure cylinder 7 based on the pressure value fed back by the pressure sensors, so that the bonding downward pressure is always within the set range. This achieves automatic adjustment of the bonding downward pressure, making it convenient to operate and more practical.
[0021] In the description of this utility model, it should be noted that the directional terms such as "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", and "counterclockwise" indicate the orientation and positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. They should not be construed as limiting the specific protection scope of this utility model.
[0022] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Thus, the use of "first" and "second" to define a feature may explicitly or implicitly include one or more of that feature. In this description of the utility model, "a number" means two or more, unless otherwise explicitly specified.
[0023] In this utility model, unless otherwise explicitly specified and limited, the terms "assembly," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection; they can refer to a direct connection or a connection through an intermediate medium; or they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0024] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.
Claims
1. An automatic pressure-adjusting pressing and bonding device, comprising a frame (1), a conveyor table (2) disposed on the frame (1), a crossbeam (3) fixedly mounted on the frame (1), and a pressing assembly movably mounted on the crossbeam (3), characterized in that: The pressing assembly includes a cantilever (4) fixedly mounted on the crossbeam (3), a pressure plate (5), and two support arms (6) movably mounted on both ends of the cantilever (4). The cantilever (4) and the pressure plate (5) are parallel to the conveying table (2), and the two ends of the pressure plate (5) are movably pivotally connected to the lower ends of the two support arms (6). The lower part of the cantilever (4) is pivotally fitted with a top pressure cylinder (7), and the upper part of the pressure plate (5) is fitted with a compression spring (8). The piston rod of the top pressure cylinder (7) is fixedly connected to the compression spring (8).
2. The automatic pressure-adjusting type pressing and bonding device according to claim 1, characterized in that: The compression spring (8) is fitted with a telescopic rod (9) in the middle. The lower end of the telescopic rod (9) is pivotally connected to the pressure plate (5), and the upper end of the telescopic rod (9) is fixedly connected to the outer end of the piston rod of the top pressure cylinder (7). The two ends of the compression spring (8) abut against the upper and lower ends of the telescopic rod (9) respectively.
3. The automatic pressure-adjusting type pressing and bonding device according to claim 2, characterized in that: Both ends of the telescopic rod (9) are provided with spring retaining rings (10), and the two ends of the compression spring (8) abut against the two spring retaining rings (10) respectively.
4. The automatic pressure-adjusting type pressing and bonding device according to claim 1, characterized in that: Both ends of the pressure plate (5) are bent upwards in an arc to form guide bends (11).
5. The automatic pressure-adjusting type pressing and bonding device according to claim 1, characterized in that: The conveying platform (2) is equipped with several pressure sensors corresponding to the positions of the pressure plate (5).