Processing technology and processing equipment of multi-layer structure insulation board

Abstract

The application is suitable for the field of insulation board processing equipment, and provides a multi-layer structure insulation board processing technology and processing equipment, which comprises a filling layer nozzle, the output end of which corresponds to the filling area of the board; with the conveying of the conveying mechanism to the board, the filling layer nozzle sprays liquid filler; a diffusion roller forms a channel with a predetermined gap between the working surface of the support seat, and the filler is pressed and diffused after passing through the channel; a shaping mechanism shapes the diffused liquid filler, thereby, the application replaces the traditional precast board layer bonding by spraying and filling liquid filler, can adaptively fill the cavity between the outer layer boards, can not only ensure the uniformity of filling, but also can adapt to the processing needs of insulation boards of different specifications, greatly reduces the precise positioning strength during installation, and the overall structure of the equipment is simple and efficient; the spraying, diffusion and shaping processes are completed in turn during the conveying process, without additional transfer stations, and the processing efficiency of the multi-layer insulation board is effectively improved.

Description

Technical Field

[0001] This invention relates to the field of insulation board processing equipment, and in particular to a multi-layer insulation board processing technology and processing equipment. Background Technology

[0002] Insulation boards are commonly used in building walls, roofs, ceilings, and cold storage facilities where temperature control and insulation are required. Compared to traditional single-material insulation boards, multi-layer insulation boards offer a combination of structural strength, thermal insulation performance, waterproofing, and corrosion resistance, making them more widely applicable.

[0003] In existing sheet metal processing technologies, although electrostatic powder coating technology has been partially applied to the coating of metal sheets, existing powder coating systems still have shortcomings in balancing thin-coat uniformity, high weather resistance, and high adhesion. Some powder coatings require a relatively thick film to ensure corrosion resistance, which not only increases material consumption but also easily leads to stress accumulation within the coating. This increases the risk of coating cracking or interlayer delamination during subsequent insulation layer foaming and thermal bonding processes.

[0004] Meanwhile, in existing board structures, the insulation layer is mostly a sponge layer; in the processing of multi-layer insulation boards, the sponge layer needs to be laminated and bonded to other layers in sequence. However, most existing processing equipment requires manual assistance to align the layers, which is not only inefficient but also prone to affecting the final processing accuracy and quality of the insulation board due to interlayer misalignment, making it difficult to meet the needs of small and medium-sized insulation board production.

[0005] In conclusion, the existing technology obviously has inconveniences and defects in practical use, so it is necessary to improve it. Summary of the Invention

[0006] To address the aforementioned shortcomings, the present invention aims to provide a multi-layer insulation board processing equipment, which can: 1) In terms of process: Since this sprayed sheet takes into account the uniformity, weather resistance and adhesion of the coating, there is no need to deliberately increase the film thickness to ensure anti-corrosion performance, which reduces material consumption and reduces the accumulation of internal stress in the coating.

[0007] 2) In terms of structure: The liquid filler spray filling replaces the traditional prefabricated board layer bonding, which can adaptively fill the cavities between the outer boards. It can not only ensure the uniformity of filling, but also adapt to the processing requirements of insulation boards of different specifications, greatly reducing the intensity of precise positioning during installation. The overall structure of the equipment is simple and efficient. During the transmission process, the spraying, diffusion and shaping processes are completed in sequence without the need for additional transfer stations, which effectively improves the processing efficiency of multi-layer insulation boards.

[0008] To achieve the above objectives, the present invention provides a processing technology for multi-layer insulation boards, comprising the following steps: Step (1): Surface treatment of single-layer metal sheet; Phosphating or zirconium pretreatment is performed on the single-layer metal sheet constituting the composite sheet to form a chemical conversion film on its surface; then electrostatic powder spraying is performed on the surface to form a powder coating; then infrared radiation and hot air circulation are used to heat the powder coating in a coordinated manner to melt, flow, crosslink and solidify it, and after cooling, a coated single-layer metal sheet is obtained. Step (2): Transfer and foam layer composite; The coated metal single-layer plate obtained in step (1) is transferred along the production line, and fillable material is applied to its uncoated surface or designated composite surface to form an intermediate insulation layer; Step (3): Heating, fixing and cutting; The plate with filling material is heated so that the filling material is bonded and fixed to the coated metal single-layer plate. After cooling, it is cut to obtain the composite plate.

[0009] According to the multi-layer structure insulation board processing equipment of the present invention, the powder coating used in step (1) is a weather-resistant and corrosion-resistant powder coating, and the cured coating formed therefrom is subjected to color difference and peeling quality inspection.

[0010] According to the multi-layer structure insulation board processing equipment of the present invention, in step (1), when performing the electrostatic powder spraying, the powder falling off is recovered by a powder recovery system.

[0011] According to the multi-layer structure insulation board processing equipment of the present invention, in step (1), the infrared radiation and hot air circulation coordinated heating adopts a gradient heating mode and has real-time temperature feedback control.

[0012] The present invention also provides a multi-layer insulation board processing equipment, comprising: a filling layer nozzle, the output end of which corresponds to the area to be filled in the board; as the board is conveyed by the transmission mechanism, the filling layer nozzle sprays liquid filler; a diffusion roller, which forms a channel with a predetermined gap between itself and the working surface of the support base, through which the filler is pressed and diffused; and a shaping mechanism for shaping the diffused liquid filler.

[0013] According to the multi-layer insulation board processing equipment of the present invention, the shaping mechanism includes: a plurality of pressure rollers, wherein a pressing area is formed between the roller surface of each pressure roller and the working surface of the support seat; and a heating assembly, mounted on the frame, for heating and shaping the liquid filler.

[0014] According to the multi-layer insulation board processing equipment of the present invention, a plurality of pressure rollers are rotatably mounted on a movable frame, and a moving mechanism is installed between the movable frame and the equipment support for driving the pressure rollers away from or closer to the working surface of the support seat to adjust the spacing of the pressing areas.

[0015] According to the multi-layer insulation board processing equipment of the present invention, the filling area is the middle area formed between the first board layer and the second board layer in the laminated state, the filling position of the filling layer nozzle, and the first board layer and the second board layer being transported have a transport angle.

[0016] According to the multi-layer insulation board processing equipment of the present invention, the diffusion roller is perpendicular to the transmission direction of the first layer or the second layer.

[0017] According to the multi-layer insulation board processing equipment of the present invention, the diffusion roller is fixedly or rotatably mounted on the equipment support.

[0018] According to the multi-layer insulation board processing equipment of the present invention, the diffusion roller is rotatably mounted on the equipment support and is driven to rotate by the first driver; the roller surface of the diffusion roller is provided with oblique protrusions or oblique grooves, which are used to guide the filler relative to the spray point of the filler layer nozzle to one side or both sides in coordination with the rotation of the diffusion roller.

[0019] According to the multi-layer insulation board processing equipment of the present invention, the heating component includes: an insulation chamber surrounding a transmission channel on the working surface of a support base; and a heating pipe disposed on the inner wall of the insulation chamber.

[0020] This invention provides a processing technology and equipment for multi-layer insulation boards, comprising the following steps: Step (1): Surface treatment of single-layer metal sheet; Phosphating or zirconium pretreatment is performed on the single-layer metal sheet constituting the composite sheet to form a chemical conversion film on its surface; then electrostatic powder spraying is performed on the surface to form a powder coating; then infrared radiation and hot air circulation are used to heat the powder coating in a coordinated manner to melt, flow, crosslink and solidify it, and after cooling, a coated single-layer metal sheet is obtained. Step (2): Transfer and foam layer composite; The coated metal single-layer plate obtained in step (1) is transferred along the production line, and fillable material is applied to its uncoated surface or designated composite surface to form an intermediate insulation layer; Step (3): Heating, fixing, and cutting; The board with filling material is heated to bond and fix the filling material to the coated metal single-layer board. After cooling, it is cut to obtain the composite board. It also includes: a filling layer nozzle, the output end of which corresponds to the area to be filled on the board; as the conveying mechanism transports the board, the filling layer nozzle sprays liquid filler; a diffusion roller, which forms a channel with a predetermined gap between itself and the working surface of the support base, through which the filler is pressed and diffused; and a shaping mechanism, which shapes the diffused liquid filler. The liquid filler can be a foamed insulation filler material, sprayed into the preset filling area of ​​the board through the filling layer nozzle. As the board moves with the conveying mechanism, it enters the channel between the diffusion roller and the working surface of the support base. Through the squeezing action of the channel, the liquid filler can be evenly spread throughout the filling area, avoiding problems such as insufficient filling or uneven thickness. The evenly spread liquid filler then enters the shaping mechanism, where it is cured to form a stable filling layer, which, together with the outer layer board, completes the initial forming of the multi-layer insulation board.

[0021] This invention can: 1) In terms of process: Since this sprayed sheet takes into account the uniformity, weather resistance and adhesion of the coating, there is no need to deliberately increase the film thickness to ensure anti-corrosion performance, which reduces material consumption and reduces the accumulation of internal stress in the coating. 2) In terms of structure: The liquid filler spray filling replaces the traditional prefabricated board layer bonding, which can adaptively fill the cavities between the outer boards. It can not only ensure the uniformity of filling, but also adapt to the processing requirements of insulation boards of different specifications, greatly reducing the intensity of precise positioning during installation. The overall structure of the equipment is simple and efficient. During the transmission process, the spraying, diffusion and shaping processes are completed in sequence without the need for additional transfer stations, which effectively improves the processing efficiency of multi-layer insulation boards. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a side view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the shaping mechanism of the present invention; Figure 4 This is a structural diagram of the inclined groove on the diffusion roller; In the figure, 1-filling layer nozzle, 2-diffusion roller, 3-shaping mechanism, 4-pressure roller, 5-moving frame, 6-first plate layer, 7-second plate layer, 8-sloping groove, 9-insulation chamber, 10-heating pipe, 12-end of cylinder piston rod. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely for explaining the invention and are not intended to limit the invention.

[0024] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0025] Meanwhile, the meaning of "and / or" or "and / or" appearing throughout the text is that it includes three options. Taking "A and / or B" as an example, it includes option A, option B, or an option that satisfies both A and B.

[0026] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0027] This invention provides a processing technology and equipment for multi-layer insulation boards. This application discloses a processing technology for multi-layer insulation boards, comprising the following steps: (1) Surface treatment of single-layer metal sheet: The single-layer metal sheet constituting the composite sheet is pretreated by phosphating or zirconation to form a chemical conversion film on its surface; then, electrostatic powder spraying is performed on the surface to form a powder coating; then, infrared radiation and hot air circulation are used for coordinated heating to melt, level, cross-link and cure the powder coating, and after cooling, a coated single-layer metal sheet is obtained; wherein, the coordinated heating of hot air circulation is achieved by using a mid-wave infrared array and a ring hot air system, and rapid and uniform curing is achieved in a gradient temperature control mode. PID real-time feedback temperature control avoids internal stress in the coating, reduces curing energy consumption by 20%-30%, and significantly shortens the curing time. (2) Transfer and foam layer composite: The coated metal single-layer plate obtained in step (1) is transferred along the production line, and foamable foam material is applied to its uncoated surface or designated composite surface to form an intermediate insulation layer. (3) Heating, fixing and cutting: The board with foam material is heated to make the foam material foam and bond it to the coated metal single layer board. After cooling, it is cut to obtain the composite board.

[0028] The powder coating used in step (1) is a weather-resistant and corrosion-resistant powder coating, employing a "hyperbranched polyester-dynamic crosslinked siloxane" hybrid resin, combined with a core-shell structured ultraviolet absorber and composite anti-corrosion filler, to achieve thin coating (uniform film thickness), high weather resistance (2000h aging ΔE≤2.0), and heavy-duty anti-corrosion performance (no peeling after 2000h salt spray). After curing, the resulting coating needs to undergo testing to ensure the above performance. In the 2000-hour accelerated aging test, the color difference ΔE ≤2.0, and after the 2000-hour neutral salt spray test, the coating shows no peeling.

[0029] In step (1), during the electrostatic powder coating process, the coating parameters are adaptively adjusted according to the material of the metal single-layer plate, and a powder recovery system is configured to ensure that the powder recovery rate is not less than 95% and there are no VOC emissions. The process of adjusting the coating parameters involves dynamically controlling the voltage (60-80kV), spray distance (300-500mm), and powder flow rate (50-100g / min) through a machine learning model to ensure coating uniformity.

[0030] In step (1), the infrared radiation and hot air circulation heating adopts a gradient heating mode and has real-time temperature feedback control to suppress the generation of internal stress in the coating.

[0031] The advantages of the above process are: Environmentally friendly: Zero VOC emissions, powder utilization rate ≥95%. Performance: Coating adhesion ≥10MPa, excellent resistance to UV aging and salt spray. Economic: The overall cost is reduced by 15%-20% compared to traditional processes, making it suitable for large-scale production.

[0032] See Figure 1 and Figure 2 This application discloses a multi-layer insulation board processing equipment, comprising: A filling layer nozzle 1, with its output end corresponding to the area to be filled in the board, sprays liquid filler as the conveying mechanism transports the board. A diffusion roller 2 forms a channel with a predetermined gap between itself and the working surface of the support base, through which the filler is pressed and diffused. A shaping mechanism 3 shapes the diffused liquid filler. The liquid filler can be a foamed insulation filler material, sprayed into the preset filling area of ​​the board by the filling layer nozzle 1. As the board moves with the conveying mechanism, it enters the channel between the diffusion roller 2 and the working surface of the support base. Through the squeezing action of the channel, the liquid filler can be evenly spread throughout the filling area, avoiding problems such as insufficient filling or uneven thickness. The evenly spread liquid filler then enters the shaping mechanism 3, where it is cured to form a stable filling layer, which, together with the outer board, completes the initial forming of the multi-layer insulation board. By using liquid filler spraying to replace traditional prefabricated panel bonding, the system can adaptively fill the cavities between outer panels, ensuring uniform filling and adapting to the processing requirements of insulation boards of different specifications. This significantly reduces the intensity of precise positioning during installation, and the overall structure of the equipment is simple and efficient. The spraying, diffusion, and shaping processes are completed sequentially during the transmission process, eliminating the need for additional transfer stations and effectively improving the processing efficiency of multi-layer insulation boards.

[0033] The conveying mechanism for the sheet material consists of multiple conveying rollers arranged sequentially and at intervals along the processing line. Each conveying roller can rotate independently, forming a flat and supportive conveying working surface that can stably support the outer sheet material and transport it forward. During the conveying process, the rotation of the conveying rollers drives the sheet material to move smoothly, preventing it from slipping or deviating, and allowing the sheet material to pass through each processing step sequentially at a preset speed, ensuring a stable processing rhythm.

[0034] See Figure 3 In some embodiments of the present invention, the shaping mechanism 3 includes: a plurality of pressure rollers 4, each pressure roller 4 forming a pressing area H between its roller surface and the working surface of the support base, and rotating under the drive of a second driver; and a heating component, mounted on the frame, for heating and shaping the liquid filler. The conveying mechanism drives the sheet material with the liquid filler initially spread to move, passing sequentially through the pressing areas formed by each pressure roller 4. The pressure rollers 4 rotate under the drive of the second driver, continuously pressing and leveling the liquid filler to ensure that the filling layer reaches the preset thickness and that the thickness is uniform, and also assisting in the stable forward conveying of the sheet material. At the same time, the heating component continuously outputs heat to uniformly heat the pressed liquid filler, allowing the liquid filler to quickly heat up and solidify, forming a structurally stable and tightly bonded filling layer, thus completing the shaping process of the insulation board.

[0035] In some embodiments of the present invention, a plurality of pressure rollers 4 are rotatably mounted on a movable frame 5. A moving mechanism is installed between the movable frame 5 and the equipment support to drive the pressure rollers 4 away from or towards the working surface of the support seat, thereby adjusting the spacing between the pressing areas. During operation, the movable frame 5 can be moved by the moving mechanism according to the required filling layer thickness, adjusting the spacing between the pressure rollers 4 and the working surface of the support seat. This adapts to the processing requirements of insulation boards of different thicknesses, flexibly adjusting the pressing pressure, avoiding uneven filling layer thickness due to excessive spacing, or crushing of the board due to insufficient spacing, thus improving the adaptability and processing stability of the equipment.

[0036] The aforementioned moving mechanism can be selected as a traditional mechanical mechanism with a screw drive or a gear and rack drive. Taking the screw drive as an example, a drive screw is connected to the output end of the drive motor, and the moving frame 5 is sleeved on the drive screw through a threaded pair. When the drive motor rotates, the moving frame 5 can be driven to move smoothly along the preset direction through the screw drive, accurately controlling the displacement distance of the pressure roller 4. The structure is simple, the transmission accuracy is high, the adjustment is convenient, and the operation is stable. Alternatively, it can be the cylinder telescopic mechanism selected in this application. The cylinder body (not shown in the figure) is fixedly installed on the roof or equipment bracket, and the end 12 of the cylinder piston rod is connected and fixed to the moving frame 5. The position of the moving frame 5 can be quickly adjusted by controlling the extension length of the cylinder piston rod. The response speed is fast, the cost is lower, and it can meet the processing scenarios with moderate precision requirements.

[0037] In the embodiment shown in the figure, the board material includes a first layer 6 and a second layer 7 that are being transported. The filling area is the central region formed between the first layer 6 and the second layer 7 in a laminated state. The filling position of the filling nozzle 1 is located at the center of the surface of the first layer 6 and the second layer 7. The first layer 6 and the second layer 7 being transported have a transport angle A. The transport angle A allows the output end of the filling nozzle 1 to easily extend into the central region. The pressure roller 4 and the diffusion roller 2 only apply pressure to the upper first layer 6 and do not come into contact with the liquid filler. During filling, the liquid filler is injected into the central region between the two layers through the filling nozzle 1. The transport angle allows the filler to flow evenly and cover the entire filling area, eliminating the need for large-area segmentation and positioning of the layers in advance, thus simplifying the pre-processing preparation.

[0038] In some embodiments of the present invention, the diffusion roller 2 is perpendicular to the conveying direction of the first plate layer 6 or the second plate layer 7. The roller surface of the diffusion roller 2 can roll and comb the injected liquid filler, spreading and smoothing out the unevenly distributed filler in the filling area, further ensuring that the thickness of the filling layer is uniform. The diffusion roller 2 is fixedly or rotatably mounted on the equipment bracket.

[0039] See Figure 4In another embodiment of the present invention, the diffusion roller 2 is rotatably mounted on the equipment bracket and is driven to rotate by the first driver; the roller surface of the diffusion roller 2 is provided with inclined protrusions or inclined grooves 8, which are used to cooperate with the rotation of the diffusion roller 2 to drive the filler relative to the spray point of the filler layer nozzle 1 to one or both sides. Preferably, the inclined protrusions or inclined grooves 8 adopt a spiral structure. When the diffusion roller 2 rotates, the inclined protrusions or inclined grooves 8 of the spiral structure can use the convex surface (the side of the inclined protrusion or the side of the inclined groove 8) to gradually push and disperse the filler accumulated near the spray point to both sides of the filling area with the help of the rotation of the diffusion roller 2. This not only avoids local accumulation of filler at the nozzle injection position, but also helps the filler to spread evenly along the conveying direction of the plate layer, further improving the uniformity of the filler layer thickness, and at the same time, it can also speed up the filling rate and reduce the waiting time required for the natural flow of the filler.

[0040] In some embodiments of the present invention, the heating assembly includes: an insulated chamber 9 surrounding a transmission channel on the working surface of the support base; and heating pipes 10 disposed on the inner wall of the insulated chamber 9. Specifically, the heating pipes 10 can be point heating pipes 10 or steam heating pipes 10, and multiple sets of them are arranged along the transmission channel direction. The temperature inside the chamber can be adjusted in stages according to processing requirements, allowing the filler to gradually heat up and slowly solidify, avoiding voids inside the filler layer due to sudden temperature changes, and ensuring the overall structural stability of the insulation board. The heating assembly can also be equipped with a temperature sensor inside the insulated chamber 9, which, in conjunction with a temperature control unit, regulates the temperature inside the chamber in real time, maintaining the temperature stably within a range suitable for processing the filler.

[0041] Of course, the present invention may have other various embodiments. Without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding changes and modifications should all fall within the protection scope of the appended claims.

Claims

1. A processing technology for a multi-layer insulation board, characterized in that, Includes the following steps: Step (1): Surface treatment of single-layer metal sheet; Phosphating or zirconium pretreatment is performed on the single-layer metal sheet constituting the composite sheet to form a chemical conversion film on its surface; then electrostatic powder spraying is performed on the surface to form a powder coating; then infrared radiation and hot air circulation are used to heat the powder coating in a coordinated manner to melt, flow, crosslink and solidify it, and after cooling, a coated single-layer metal sheet is obtained. Step (2): Transfer and foam layer composite; The coated metal single-layer plate obtained in step (1) is transferred along the production line, and fillable material is applied to its uncoated surface or designated composite surface to form an intermediate insulation layer; Step (3): Heating, fixing and cutting; The plate with filling material is heated so that the filling material is bonded and fixed to the coated metal single-layer plate. After cooling, it is cut to obtain the composite plate.

2. The processing technology of the multi-layer structure insulation board according to claim 1, characterized in that, The powder coating used in step (1) is a weather-resistant and corrosion-resistant powder coating, and the cured coating formed therefrom is subjected to quality inspection for color difference and peeling.

3. The processing technology of the multi-layer structure insulation board according to claim 1, characterized in that, In step (1), during the electrostatic powder spraying process, the falling powder is recovered using a powder recovery system.

4. The processing technology of the multi-layer insulation board according to claim 1, characterized in that, In step (1), the infrared radiation and hot air circulation heating adopts a gradient heating mode and has real-time temperature feedback control.

5. A processing equipment employing the multi-layer structure insulation board processing technology described in any one of claims 1 to 4, characterized in that, include: The filler nozzle has its output end corresponding to the area of ​​the board to be filled; As the conveying mechanism transports the sheet material, the filling layer nozzles spray liquid filler. A diffusion roller has a channel with a predetermined gap between it and the working surface of the support base. The filler is pressed and diffused after passing through the channel. The shaping mechanism shapes the diffused liquid filler.

6. The multi-layer insulation board processing equipment according to claim 5, characterized in that, The shaping mechanism includes: Multiple pressure rollers, each of which forms a pressing area between its roller surface and the working surface of the support base; Heating components, mounted on the frame, are used to heat and shape liquid fillers.

7. The multi-layer insulation board processing equipment according to claim 6, characterized in that, Multiple pressure rollers are rotatably mounted on a movable frame. A moving mechanism is installed between the movable frame and the equipment support to drive the pressure rollers away from or towards the working surface of the support seat, so as to adjust the spacing of the pressing areas.

8. The multi-layer insulation board processing equipment according to claim 5, characterized in that, The filling area is the central region formed between the first and second layers in the laminated state. The filling position of the filling nozzle is such that the first and second layers being transported have a transport angle.

9. The multi-layer insulation board processing equipment according to claim 5, characterized in that, The diffusion roller is fixedly or rotatably mounted on the equipment bracket. The diffusion roller is rotatably mounted on the equipment bracket and rotates under the drive of the first driver. The surface of the diffusion roller is provided with convex or grooving to guide the filler to one or both sides relative to the spray point of the filler layer nozzle as the diffusion roller rotates.

10. The multi-layer insulation board processing equipment according to claim 6, characterized in that, The heating component includes: The insulated compartment, which surrounds the working surface of the support base; Heating tubes are installed on the inner wall of the insulated chamber.

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