Fireproof composite board pressing device

Abstract

A kind of fireproof composite board pressing device, including support plate and the conveying roller, pre-pressing roller, even number of compensation roller and the current pressing roller in turn being arranged along the direction of plate conveying.Compensation roller is symmetrically arranged in the upper and lower sides of blank, and the surface of roller body has preset taper, and the cross-sectional diameter of two sides is less than the cross-sectional diameter of center.The unique structure makes compensation roller produce the force from the center of blank to edge when rolling, so as to drive the residual gas to be directed and discharged, effectively prevent bulging.At the same time, compensation roller is internally provided with cavity for circulation of cooling medium, can accurately control roller surface temperature, avoid adhesive to be cured in advance in exhaust stage, guarantee the flow and permeability of adhesive layer, significantly reduce the risk of plate warping.The present application solves the problem of incomplete exhaust and easy to produce defects in traditional process, improves the forming quality and yield of fireproof composite board.

Description

Technical Field

[0001] This invention belongs to the field of fireproof composite panels, specifically referring to a fireproof composite panel pressing device. Background Technology

[0002] With the improvement of building safety standards, fire-resistant composite panels, which are made of metal panels and inorganic mineral core layers (such as reinforced calcium silicate boards, magnesium oxide boards, etc.), are widely used due to their excellent fire resistance, environmental protection and structural performance. The mainstream production process is to laminate the core material and the metal panels on both sides with adhesives and then hot-press them into shape.

[0003] However, during this lamination process, due to the significant differences in physical properties (especially the coefficient of thermal expansion and modulus of elasticity) between the inorganic mineral core material and the metal panel, and the fact that volatile gases are easily generated when the adhesive cures, traditional one-step or simple two-step hot pressing processes often result in the incomplete removal of gases from the interior of the composite board and uneven curing of the adhesive layer, thus producing appearance and structural defects such as "bulging" and "warping," which seriously affect product quality, yield, and mechanical properties.

[0004] While existing technologies generally employ a pre-pressure venting process, these processes mostly involve static vertical pressure application, which has limited effectiveness in driving out interlayer gases and makes it difficult to achieve directional and thorough gas removal. Furthermore, during the preheating or pre-pressing stages, improper temperature control of the pressure plate or rollers can easily lead to premature localized curing of the surface adhesive, which in turn blocks the internal gas venting channels and exacerbates defect formation. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a fireproof composite board pressing device, which at least partially solves the above problems.

[0006] The technical solution adopted in this invention is as follows: The present invention proposes a fireproof composite board pressing device, which includes a support plate and a conveying roller, a pre-pressing roller, an even number of compensating rollers and the pressing roller arranged sequentially along the conveying direction of the board. The pre-pressing roller is used to perform preliminary rolling pressing on the fireproof composite board blank after assembly, and to discharge most of the gas. The compensating rollers are symmetrically arranged on the upper and lower sides of the slab and are used to apply secondary pressure to the slab after pre-pressing to expel gas. The roller body surface of the compensating roller has a preset taper, and the cross-sectional diameters on both sides of the compensating roller are smaller than the cross-sectional diameter at the center, so as to drive the gas in the middle of the slab to escape to the edge during rolling. The pressure roller is used for the final pressing and shaping of the slab; The compensation roller has a cavity inside which a cooling medium can circulate.

[0007] Furthermore, the compensation roller includes a central rotating shaft and an inclined cone fixedly sleeved on the rotating shaft, wherein the outer diameter of the inclined cone is smaller than the inner diameter.

[0008] Furthermore, the inclined cones are symmetrically arranged at both ends of the compensating roller.

[0009] Furthermore, the ends of the inclined cones on both sides are rotated and sealed by the first sealing disc. The inclined cones are provided with first pipe openings, and the ends of the inclined cones are provided with annular grooves. The annular grooves are connected to the cavity, and the first pipe openings are connected to the annular grooves. The first pipe openings on both sides serve as the inlet and outlet of the cooling medium, respectively.

[0010] Furthermore, the surface of the compensation roller has a textured structure.

[0011] Furthermore, the texture structure is a circumferentially distributed ridge-like protrusion or a spirally encircling annular groove.

[0012] Furthermore, two compensation rollers are arranged on both the upper and lower sides of the slab, and the compensation rollers on the same side are arranged symmetrically at the center. The inclined cone is located at the outer end of the compensation roller, and an avoidance cone is arranged at the end of the compensation roller opposite to the inclined cone. The taper of the avoidance cone is opposite to the taper direction of the inclined cone.

[0013] Furthermore, the end of the inclined cone is rotatably sealed by a first sealing disc, and the end of the clearance cone is rotatably sealed by a second sealing disc. The first sealing disc is provided with a first port, and the second sealing disc is provided with a second port. Both the first port and the second port are connected to the interior of the cavity and serve as the inlet and outlet of the cooling medium, respectively.

[0014] Furthermore, the shaft of the compensation roller is universally connected via a first universal joint and a second universal joint to adjust the angle at both ends of the shaft.

[0015] The beneficial effects achieved by this invention are as follows: By setting a compensating roller with a specific taper and integrating an internal cooling cavity, significant beneficial effects are produced; the compensating roller is symmetrically arranged above and below the slab, and its tapered profile, with "diameters on both sides smaller than the center diameter", can generate a transverse shear force from the center of the slab to the edge during rolling, thereby actively and directionally driving the gas remaining in the middle after pre-pressing to escape to the edge of the slab, fundamentally and effectively eliminating bulging caused by gas retention; at the same time, by introducing a cooling medium into the cavity inside the compensating roller, the roller surface temperature can be precisely controlled, avoiding premature local curing of the adhesive due to heat during the secondary venting stage, ensuring that the adhesive layer still maintains excellent flow and penetration performance before the final pressing, greatly improving the uniformity of pressing and significantly reducing the risk of warping. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the fireproof composite board pressing device according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the compensating roller structure; Figure 3 for Figure 2 A broken view of a sectional view; Figure 4 A schematic diagram of one embodiment of the compensating roller; Figure 5 This is a schematic diagram of another embodiment of the compensating roller; Figure 6 A schematic diagram of another embodiment of the compensating roller; Figure 7 for Figure 6 A broken view of a sectional view; Figure 8 for Figure 6 A diagram showing the state of the two compensating rollers working together; Figure 9 for Figure 8 Top view.

[0017] Among them, 1. support plate, 2. conveying roller, 3. pre-pressure roller, 4. compensation roller, 5. main pressure roller, 6. inclined cone, 7. rotating shaft, 8. first sealing disc, 9. first pipe opening, 10. cavity, 11. annular groove, 12. textured structure, 13. avoidance cone, 14. second sealing disc, 15. second pipe opening, 16. first universal rod, 17. second universal rod.

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0021] like Figure 1 As shown, the fireproof composite board pressing device of this embodiment includes a horizontal support plate 1, on which a conveying roller 2, a pre-pressing roller 3, a compensating roller 4, and a pressing roller 5 are sequentially installed along the conveying direction of the fireproof composite board blank (from left to right in the figure). The conveying roller 2 is responsible for smoothly feeding the assembled blank (i.e., the composite body to be pressed with an inorganic mineral core layer bonded between the upper and lower aluminum plates) into the plate. The pre-pressing roller 3 first performs a preliminary, relatively low-pressure roller press on the blank to squeeze out most of the air between the layers.

[0022] In some embodiments, the slab enters the core venting station managed by the compensating roller 4. In this embodiment, there are two compensating rollers 4, one above the slab and one below, arranged symmetrically. Please refer to... Figure 2 and Figure 3 Each compensating roller 4 includes a rotating shaft 7 and an inclined cone 6 fixedly sleeved on the rotating shaft 7. The outer end (the side away from the center of the device) of the inclined cone 6 has a smaller diameter and the inner end has a larger diameter, so that the entire roller body presents a symmetrical taper with a thicker center and thinner ends. When the slab passes through this pair of compensating rollers 4, the taper of the roller surface applies a greater linear pressure to the middle of the slab and generates a lateral force that "pushes" the material (along with the trapped gas) from the center to the two side edges, thereby forcefully driving the gas remaining in the middle of the slab after pre-compression to the sides and expelling it.

[0023] During this process, in order to create the optimal flow window for the adhesive, it is essential to prevent the surface temperature of the compensating roller 4 from becoming too high. For example... Figure 3 As shown, a hollow cavity 10 is machined inside the inclined cone 6. Both ends of the inclined cone 6 are rotary sealed by a first sealing disc 8, and an annular groove 11 is machined at each end. A first port 9 is installed on the first sealing disc 8, which communicates with the annular groove 11, which in turn communicates with the cavity 10. Cooling water can flow in from one side of the first port 9, pass through the annular groove 11 into the cavity 10, carry away heat, and then flow out from the other side of the first port 9, forming a circulating cooling system to ensure the roller surface is at a suitable temperature. It should be noted that when the compensating roller 4 rotates, the first sealing disc 8 remains fixed to prevent the water pipe connected to the first port 9 from becoming entangled.

[0024] Finally, the fully degassed slab is subjected to final hot or cold pressing by the pressure roller 5 to achieve a firm pressing and shaping.

[0025] Based on the above embodiments, such as Figure 4 and Figure 5 As shown, in order to further enhance the exhaust effect, a textured structure 12 can be machined on the surface of the inclined cone 6 of the compensation roller 4. Figure 4The texture structure 12 shown consists of rib-shaped protrusions evenly distributed along the circumference. These protrusions can slightly "plow" through the adhesive layer during rolling, breaking any air bubbles that may form. Figure 5 The textured structure 12 shown is a spirally encircling annular groove, which provides a channel for gas to escape along the spiral path. These textured structures 12 can increase the kneading and guiding effect of the roller on the slab, and improve the exhaust efficiency.

[0026] Based on the above embodiments, for wider or more demanding slabs, a more complex compensating roll layout can be adopted. For example... Figures 6 to 9 As shown, in this embodiment, two compensation rollers 4 are provided above and below the slab, and the two compensation rollers 4 on the same side (such as the upper side) are arranged in a centrally symmetrical manner.

[0027] like Figure 6 and Figure 7 As shown, the structure of each compensating roller 4 has changed: on the rotating shaft 7, an inclined cone 6 (with a taper direction that is thinner at the outer end and thicker at the inner end) is fixedly fitted at its outer end (the end away from the center line of the slab), while a clearance cone 13 is fixedly fitted at its inner end (the end closer to the center line of the slab). The taper direction of this clearance cone 13 is opposite to that of the inclined cone 6. This combination of "inclined cone-clearance cone" allows the two centrally symmetrical compensating rollers 4 to form an exhaust channel that gradually expands from the docking point to the outer ends on both sides when they are joined, which is very beneficial for driving the gas from the central area of ​​the slab to the outer ends on both sides.

[0028] The cooling flow path of this structure is as follows: Figure 7 As shown, the end of the inclined cone 6 is sealed by the first sealing disc 8 and connected to the first port 9, while the end of the clearance cone 13 is sealed by the second sealing disc 14 and connected to the second port 15. Both the first port 9 and the second port 15 are connected to the internal common cavity 10. During operation, the cooling medium can flow into the cavity 10 from one of the ports (such as the first port 9) and flow out from the other port (such as the second port 15).

[0029] In addition, such as Figure 8 and Figure 9 As shown, to ensure that the roller surfaces of the four compensating rollers 4 maintain ideal contact with the slab, the rotating shaft 7 of each compensating roller 4 is connected via a first universal joint 16 and a second universal joint 17. This universal connection method allows the operator to fine-tune the angles at both ends of the rotating shaft 7, thereby compensating for minor deviations that may exist in the equipment installation or the slab thickness, and ensuring uniform pressure.

[0030] The workflow is summarized as follows: The entire process of the device is coherent: the slab is fed in by the conveying roller 2 and initially vented by the pre-pressing roller 3; then it enters the secondary venting station composed of one or two pairs of compensating rollers 4, where it is subjected to the directional extrusion of the conical roller surface and the synergistic effect of internal cooling, the residual gas is efficiently driven away, and the adhesive remains active; finally, the slab is finally pressed at the pressure roller 5 to obtain a high-quality fireproof composite board with high flatness and no bulging or warping defects.

[0031] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0032] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A fireproof composite panel pressing device, characterized in that, It includes a support plate (1) and a conveying roller (2), a pre-pressing roller (3), a compensation roller (4) and a pressure roller (5) arranged sequentially along the conveying direction of the plate. The pre-pressing roller (3) is used to perform preliminary roller pressing on the fireproof composite board blank after assembly, and to discharge most of the gas; The compensation rollers (4) are an even number and symmetrically arranged on the upper and lower sides of the slab. They are used to apply secondary pressure to exhaust gas from the pre-pressed slab. The roller body surface of the compensation rollers (4) has a preset taper. The cross-sectional diameters on both sides of the compensation rollers (4) are smaller than the cross-sectional diameters at the center, so as to drive the gas in the middle of the slab to escape to the edge during rolling. The pressure roller (5) is used to perform the final pressing and shaping of the slab; The compensation roller (4) has a cavity (10) inside which the cooling medium can circulate.

2. The fireproof composite panel pressing device according to claim 1, characterized in that: The compensation roller (4) includes a rotating shaft (7) at its center and an inclined cone (6) fixedly sleeved on the rotating shaft (7), wherein the outer diameter of the inclined cone (6) is smaller than the inner diameter.

3. The fireproof composite panel pressing device according to claim 2, characterized in that: The oblique cone (6) is symmetrically arranged at both ends of the compensating roller (4).

4. The fireproof composite panel pressing device according to claim 3, characterized in that: The ends of the inclined cones (6) on both sides are rotated and sealed by the first sealing disc (8). The inclined cones (6) are provided with first pipe openings (9). The ends of the inclined cones (6) are provided with annular grooves (11). The annular grooves (11) are connected to the cavity (10). The first pipe openings (9) are connected to the annular grooves (11). The first pipe openings (9) on both sides serve as the inlet and outlet of the cooling medium, respectively.

5. The fireproof composite panel pressing device according to claim 1, characterized in that: The surface of the compensation roller (4) has a textured structure (12).

6. The fireproof composite panel pressing device according to claim 5, characterized in that: The texture structure (12) is a circumferentially distributed ridge-like protrusion or a spirally encircling annular groove.

7. The fireproof composite panel pressing device according to claim 2, characterized in that: Two compensation rollers (4) are arranged on both the upper and lower sides of the slab, and the compensation rollers (4) on the same side are symmetrically arranged in the center. The inclined cone (6) is located at the outer end of the compensation roller (4). A clearance cone (13) is arranged at one end of the compensation roller (4) opposite to the inclined cone (6). The taper of the clearance cone (13) is opposite to the taper direction of the inclined cone (6).

8. The fireproof composite panel pressing device according to claim 7, characterized in that: The end of the inclined cone (6) is rotated and sealed by the first sealing plate (8), and the end of the clearance cone (13) is rotated and sealed by the second sealing plate (14). The first sealing plate (8) is provided with a first port (9), and the second sealing plate (14) is provided with a second port (15). The first port (9) and the second port (15) are both connected to the inside of the cavity (10) and serve as the inlet and outlet of the cooling medium, respectively.

9. The fireproof composite panel pressing device according to claim 7, characterized in that: The shaft (7) of the compensation roller (4) is universally connected through the first universal rod (16) and the second universal rod (17) to adjust the angles at both ends of the shaft (7).

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