A heating plate for pressing honeycomb paperboard
By adjusting the local flatness of the hot plate through the frame structure, the problem of hot plate deformation during the drying process of honeycomb cardboard is solved, which improves drying efficiency and adhesion, and reduces energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI LINGMING MASCH TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-09
AI Technical Summary
Existing honeycomb paperboard heating plates suffer from uneven deformation during the drying process, resulting in incomplete paperboard pressing, low drying efficiency, and high energy consumption.
The frame structure includes a support base, frame, lifting unit, and adjustment groove. The flatness of the hot plate is adjusted by adjusting screws and nuts, and floating is provided by the lifting plate and springs to achieve local flatness adjustment of the hot plate, avoid frame deformation, improve fit and drying efficiency, and reduce energy consumption.
It effectively adjusts the local flatness of the hot plate, improves the adhesion with the honeycomb paperboard, enhances drying efficiency, reduces steam energy consumption, and avoids quality problems caused by frame deformation of the hot plate.
Smart Images
Figure CN224335233U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to honeycomb paperboard production technology, specifically a heating plate for pressing honeycomb paperboard. Background Technology
[0002] In the honeycomb paperboard forming process, there are two processes involving gluing, lamination, and two drying processes using hot plates. The second process, which involves laminating and drying the honeycomb paper core and the top paper, is the most critical. Therefore, the technical requirements for the hot plate used in this second lamination and drying process, which is pressed on top of the honeycomb paperboard and is commonly referred to as the "top hot plate," are particularly important.
[0003] To address the issue of insufficient surface drying technology for honeycomb cardboard, peripheral heating systems that appeared on the market a few years ago employed a structure with internal perforations in the steel plate to allow steam to flow and prevent condensate from accumulating in the hot plate. This effectively solved the problem of insufficient temperature at the contact surface between the hot plate and the cardboard. However, it also introduced another hidden danger: deformation of the hot plate. Because the hot plate is a single piece of steel, reinforcing ribs were welded around it to cope with the deformation caused by the pressure of the cardboard. When steam first enters the hot plate, only the area near the perforated cavity heats up rapidly, while the temperature of other parts remains low. As steam continues to enter, the entire hot plate gradually heats up. However, due to the uneven heating, which is evident between the perforated and non-perforated areas, and between the hot plate itself and the reinforcing ribs, the hot plate can deform due to thermal expansion, resulting in an uneven surface, insufficient pressure on the cardboard, and ultimately, delamination of the cardboard.
[0004] Moreover, although the deformation of the hot plate will decrease as the heating time increases and the temperature of the reinforcing ribs and non-steam cavity gradually rises, there will still be an error of 0.5-1mm. Furthermore, it takes 30-60 minutes to achieve uniform heating, which may cause quality problems with the cardboard produced during this time. Utility Model Content
[0005] To address the shortcomings of the prior art, this utility model provides a heating plate for pressing honeycomb paperboard, which can adjust local flatness, ensure the overall flatness of the heating plate, improve the adhesion between the heating plate and the upper surface of the honeycomb paperboard, improve drying efficiency, and reduce steam energy consumption.
[0006] To achieve the above technical objectives, the present invention adopts the following technical solution: a heating plate for pressing honeycomb paperboard, comprising a heating plate, a support base, and a frame. The support base is fixed to the middle of the heating plate, and the frame is fixed above the support base. Lifting units are provided at both ends of the frame. The frame includes two horizontal plates, and several vertical plates are evenly arranged between the two horizontal plates. Several adjusting grooves and adjusting units are provided on both sides of the horizontal plates and both sides of the vertical plates. The adjusting unit includes an adjusting screw and two adjusting nuts. The top of the adjusting screw is located in the adjusting groove, and the bottom end of the adjusting screw is fixed to the heating plate. The two adjusting nuts are threaded onto the top of the adjusting screw, and the two adjusting nuts are located above and below the frame, respectively.
[0007] Preferably, the width of the adjusting groove is greater than the diameter of the adjusting screw, and the width of the adjusting groove is less than the outer diameter of the adjusting nut.
[0008] Preferably, the hot plate is provided with a plurality of circulation holes.
[0009] Preferably, the lifting unit includes a lifting plate, with lifting screws passing through both ends of the lifting plate, a baffle at the bottom end of the lifting screw, a spring sleeved at the bottom end of the lifting screw, the spring being located between the baffle and the lifting plate, and a lifting nut threadedly fitted to the top end of the lifting screw.
[0010] In summary, this utility model achieves the following technical effects:
[0011] The heating plate for honeycomb paperboard pressing of this utility model has an adjustment groove width greater than the diameter of the adjustment screw, meaning there is an expansion gap between the adjustment screw and the adjustment groove. This automatically adapts to the lateral and longitudinal deformation of the heating plate. Furthermore, by rotating the two adjustment nuts, the adjustment screw moves up and down relative to the frame, thereby adjusting the local flatness of the heating plate in the area near the adjustment screw. This ensures the overall flatness of the heating plate, improves the adhesion between the heating plate and the upper surface of the honeycomb paperboard, increases drying efficiency, and reduces steam energy consumption. In addition, the effective direct contact area between the frame and the heating plate is very small, essentially open, so the frame will not deform with heating, thus avoiding deformation of the heating plate caused by frame heat deformation. Attached Figure Description
[0012] Figure 1 This is a three-dimensional structural diagram of the heating plate for pressing honeycomb paperboard according to this utility model;
[0013] Explanation of the markings on the attached diagrams: 1. Hot plate; 2. Support base; 3. Horizontal plate; 4. Vertical plate; 5. Adjusting screw; 6. Adjusting nut; 7. Lifting plate; 8. Lifting screw; 9. Lifting nut; 10. Spring; 11. Circulation hole. Detailed Implementation
[0014] The present invention will be further described in detail below with reference to the accompanying drawings.
[0015] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.
[0016] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0017] 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 indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0018] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between 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.
[0019] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0020] Example 1:
[0021] like Figure 1 As shown, a heating plate 1 for pressing honeycomb paperboard includes a heating plate 1, a support base 2, and a frame. The support base 2 is fixed to the middle of the heating plate 1, and the frame is fixed above the support base 2. Lifting units are provided at both ends of the frame. The frame includes two horizontal plates 3, and several vertical plates 4 are evenly arranged between the two horizontal plates 3. Several adjusting grooves and adjusting units are provided on both sides of the horizontal plates 3 and both sides of the vertical plates 4. The adjusting unit includes an adjusting screw and two adjusting nuts 6. The top of the adjusting screw is located in the adjusting groove, and the bottom of the adjusting screw is fixed to the heating plate 1. The two adjusting nuts 6 are threadedly engaged with the top of the adjusting screw, and the two adjusting nuts 6 are located above and below the frame, respectively.
[0022] In this embodiment, the heating plate 1 for pressing honeycomb paperboard has an adjustment groove width greater than the diameter of the adjustment screw, meaning there is an expansion gap between the adjustment screw and the adjustment groove. This automatically adapts to the lateral and longitudinal deformation of the heating plate 1. Furthermore, by rotating the two adjustment nuts 6, the adjustment screw moves up and down relative to the frame, thereby adjusting the local flatness of the heating plate 1 in the area near the adjustment screw. This ensures the overall flatness of the heating plate 1, improves the adhesion between the heating plate 1 and the upper surface of the honeycomb paperboard, increases drying efficiency, and reduces steam energy consumption. In addition, the effective direct contact area between the frame and the heating plate 1 is very small, essentially open, so the frame will not deform with heating, thus avoiding deformation of the heating plate 1 due to frame heat deformation.
[0023] The width of the adjusting groove is greater than the diameter of the adjusting screw, and the width of the adjusting groove is less than the outer diameter of the adjusting nut 6. The width of the adjusting groove being greater than the diameter of the adjusting screw can reserve an expansion gap to accommodate the lateral and longitudinal deformation of the hot plate 1, and work with the adjusting screw to adjust the deformation of the hot plate 1 in the thickness direction, ensuring that the hot plate 1 is flat as a whole. The width of the adjusting groove being less than the outer diameter of the adjusting nut 6 can prevent the adjusting nut 6 from dislodging from the adjusting groove, ensuring the adjusting screw's ability to adjust the deformation of the hot plate 1 in the thickness direction.
[0024] The hot plate 1 is provided with a number of circulation holes 11; steam is introduced through the circulation holes 11 to raise the temperature of the hot plate 1.
[0025] The lifting unit includes a lifting plate 7, with lifting screws 8 passing through both ends of the lifting plate 7. A baffle is provided at the bottom end of the lifting screw 8, and a spring 10 is sleeved at the bottom end of the lifting screw 8. The spring 10 is located between the baffle and the lifting plate 7. A lifting nut 9 is threadedly fitted to the top end of the lifting screw 8. The top end of the lifting screw 8 is fixed to a hydraulic device by the lifting nut 9. The hydraulic device is used to drive the entire frame and the hot plate 1 to lift. Therefore, by rotating the lifting nut 9, the length of the lifting screw 8 extending upward from the lifting plate 7 can be adjusted, thereby adjusting the height position of the frame and the hot plate 1. Moreover, the spring 10 can provide a certain floating space when the hydraulic device presses down excessively, preventing the cardboard from being crushed due to excessive pressure.
[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.
Claims
1. A heating plate for pressing honeycomb paperboard, characterized in that, The device includes a hot plate, a support base, and a frame. The support base is fixed to the middle of the hot plate, and the frame is fixed above the support base. Lifting units are provided at both ends of the frame. The frame includes two horizontal plates, and several vertical plates are evenly arranged between the two horizontal plates. Several adjustment slots and adjustment units are provided on both sides of the horizontal plates and both sides of the vertical plates. Each adjustment unit includes an adjustment screw and two adjustment nuts. The top of the adjustment screw is located in the adjustment slot, and the bottom of the adjustment screw is fixed to the hot plate. The two adjustment nuts are threaded onto the top of the adjustment screw and are located above and below the frame, respectively.
2. The heating plate for pressing honeycomb paperboard according to claim 1, characterized in that, The width of the adjusting groove is greater than the diameter of the adjusting screw, and the width of the adjusting groove is less than the outer diameter of the adjusting nut.
3. The heating plate for pressing honeycomb paperboard according to claim 1, characterized in that, The hot plate is provided with several circulation holes.
4. The heating plate for pressing honeycomb paperboard according to claim 1, characterized in that, The lifting unit includes a lifting plate, with lifting screws passing through both ends of the lifting plate. A baffle is provided at the bottom end of the lifting screw, and a spring is sleeved at the bottom end of the lifting screw. The spring is located between the baffle and the lifting plate, and a lifting nut is threaded onto the top end of the lifting screw.