Flame-retardant floor film covering device

Abstract

The utility model relates to the technical field of floor film laminating machines, and particularly discloses a flame-retardant floor film laminating device which comprises a frame body, a frame, an automatic film spraying machine, a compression roller group and a dust removal assembly, the dust removal assembly is composed of a brush, an ion fan and a dust collector, the compression roller set is of a multi-section independent design and is transversely and flexibly connected through the longitudinal tension of a first spring and a second spring, a balancing weight and a limiting groove are combined, a heating assembly and an ultraviolet lamp set are integrated, a flame-retardant film is softened through heat bonding, permeability is enhanced, and a surface layer is rapidly cured through ultraviolet rays; the adhesive force and the hardness of the film layer are improved. Besides, a temperature sensor, a pressure sensor and a camera monitor process parameters and film layer quality in real time, alarm is triggered and defective products are automatically sorted when abnormity occurs, and the device has the advantages of efficient cleaning, uniform film covering, rapid curing, intelligent control and the like and is suitable for industrial production of high-precision flame-retardant floors.

Description

Technical Field

[0001] This utility model relates to the field of floor covering machine technology, specifically a flame-retardant floor covering device. Background Technology

[0002] Fire-retardant flooring is generally made of fiberboard, particleboard, plywood, etc. as the base material, with coating or impregnated paper as the surface material. Through flame-retardant treatment, it achieves a certain flame-retardant rating. Wood composite flooring with flame-retardant function usually adds flame-retardant materials to the flooring base material or sprays a flame-retardant film on the flooring surface. However, existing independent flooring laminating machines directly feed the flooring into the machine for lamination. If there is dust and stains on the flooring surface, it will cause problems with the adhesion between the protective film and the base material in the subsequent lamination process, making it easy to fall off during subsequent use.

[0003] A search revealed that utility model CN217670629U discloses a floor laminating machine, comprising a frame, an air pump fixedly mounted on the frame, an air pipe slidably connected to the frame, a spray pipe fixedly connected to the air pipe, a motor fixedly mounted on the frame, a motor shaft slidably connected to the frame, a slide cylinder slidably connected to the outer side of the shaft, a sliding pin threaded onto the shaft, and a mounting block welded to the slide cylinder. This utility model, by incorporating an air pump, air pipe, spray pipe, motor, shaft, slide cylinder, sliding pin, mounting block, spring, scraper, and sponge strip, removes dust using the sponge strip. However, friction between the sponge strip and the floor may cause static electricity, allowing dust to continue to adhere to the floor surface. Furthermore, in the subsequent laminating process, relying solely on a single pressure roller for compaction may result in incomplete lamination, leading to easy detachment during subsequent use. Summary of the Invention

[0004] To address the problems of inadequate cleaning and poor film application by individual pressure rollers in traditional laminating machines, this invention proposes a flame-retardant flooring laminating device to solve these issues.

[0005] A flame-retardant floor covering device includes a frame and a frame fixedly installed above the frame.

[0006] Automatic film spraying machine, the automatic film spraying machine is installed inside the frame;

[0007] The pressure roller assembly is installed inside the frame. The pressure roller assembly includes multiple pressure rollers. The ends of the pressure rollers are connected to pressure roller mounting seats. The surface of the pressure roller mounting seats is provided with through grooves.

[0008] Furthermore, the pressure roller mounting base has a cavity inside, which is located below the through groove and is connected to the through groove. The end of the pressure roller passes through the through groove and penetrates the pressure roller mounting base. A limit groove is provided on the inner surface of the through groove.

[0009] Furthermore, a pre-pressing connector is sleeved at the end of the pressure roller. A limit block is provided on the bottom outer surface of the pre-pressing connector. The limit block moves along the surface of the limit groove. The roller also includes a first spring, with its two ends fixedly connected to the bottom of the cavity and the bottom of the pre-pressing connector, respectively.

[0010] Furthermore, the pressure roller assembly includes a pre-pressure roller: made of silicone, subjected to room temperature pressure, to initially remove air bubbles.

[0011] Furthermore, the main pressure roller has a metal core and a high-temperature resistant ceramic coating, and the pressure is adjustable.

[0012] Furthermore, the precision pressure roller is made of mirror-finished stainless steel and cold-pressed to ensure a smooth surface.

[0013] Furthermore, the first spring pulls the pressure roller downwards through its tension, ensuring that the pressure roller remains in close contact with the floor surface, thus guaranteeing uniform film coating pressure and preventing issues such as air bubbles or areas of poor adhesion.

[0014] Furthermore, the limiting groove and limiting block restrict the vertical movement range of the pressure roller to prevent spring overload or pressure roller from detaching from the mounting base.

[0015] Furthermore, a counterweight is installed inside the pre-compression connector, preferably including a second spring. Adjacent pressure rollers are movably connected by the second spring, and the two ends of the second spring are respectively connected to the ends of the adjacent pressure rollers.

[0016] Furthermore, by connecting adjacent pressure rollers with a second spring, pressure can be transmitted in segments to avoid damage to the film layer caused by single-point overpressure.

[0017] Furthermore, the spring-loaded flexible connection allows the pressure roller assembly to swing slightly laterally, accommodating irregularities at floor edges or slight shifts in the conveyor belt.

[0018] Furthermore, the pre-compression connector, combined with a counterweight, enhances the stability of the pressure roller under pressure, adapting to flooring of different thicknesses.

[0019] Furthermore, the first spring works in conjunction with the counterweight to dynamically compensate for minor unevenness on the floor surface during the film-coating process, ensuring constant pressure.

[0020] Furthermore, the limiting groove and the spring form a "floating + limiting" mechanism, which allows the pressure roller to adapt itself while avoiding excessive displacement that could damage the structure.

[0021] Furthermore, it also includes a conveyor belt located below the frame; and pressure rollers located above the conveyor belt, which is a high-temperature resistant mesh belt.

[0022] Furthermore, the high-temperature resistant mesh belt can withstand temperatures up to 120℃, adapting to heating environments and preventing deformation.

[0023] Furthermore, it also includes a dust removal assembly, which includes a pressure arm that is mounted on the upper surface inside the frame;

[0024] A brush is installed at one end of the pressure arm;

[0025] A sleeve is fitted onto the outer surface of the pressure arm, and a connecting arm is connected to the surface of the sleeve.

[0026] The telescopic cylinder is mounted on the upper surface of the frame, and its output end is hinged to the connecting arm.

[0027] An ion fan and a vacuum cleaner are installed inside the frame. The ion fan is located on both sides of the brush, and the vacuum cleaner has a flat suction port installed at the suction port. The flat suction port is set at an angle of 30° to 60° to the surface of the conveyor belt.

[0028] Furthermore, the brush pressure is adjusted by the pressure arm and telescopic cylinder to efficiently remove large particles of impurities from the floor surface.

[0029] The ion fan neutralizes static electricity and prevents dust from being re-adsorbed.

[0030] Furthermore, the flat suction nozzle is tilted at 30° to 60° to enhance the negative pressure adsorption efficiency and remove fine dust.

[0031] After the brush sweeps, the ion fan immediately eliminates static electricity, and the vacuum cleaner simultaneously vacuums, forming a closed-loop cleaning process of "sweeping-static electricity elimination-vacuuming" to improve the cleanliness of the floor surface.

[0032] Furthermore, the frame is equipped with a feed inlet and a discharge outlet at both ends. A dustproof strip is installed at the feed inlet, and a conductive sponge block is installed at the end of the dustproof strip. A light shield is installed at the discharge outlet.

[0033] Furthermore, the automatic film spraying machine is equipped with partitions on both sides, and dust removal strips are installed at the bottom of the partition near the dust removal component.

[0034] Furthermore, an ultraviolet lamp assembly is installed above the pressure roller assembly, and the ultraviolet lamp assembly is fixedly installed on the upper surface inside the frame. A heating component is installed below the pressure roller assembly.

[0035] Furthermore, the lamp assembly rapidly cures the flame-retardant film surface, increasing the film's hardness, while the heating component uses infrared heating at 80-120℃ to soften the film material and enhance its penetration and adhesion to the floor substrate.

[0036] After the film layer is heated and softened, ultraviolet light accelerates the curing process, forming a dual process of "thermal bonding + light curing" to improve film adhesion.

[0037] Furthermore, a temperature sensor is installed on the inner surface of the frame above the pressure roller assembly, a pressure sensor is installed on the surface of the pressure roller, and multiple cameras are installed inside the frame; symmetrical nozzles at the top and bottom ensure uniform film thickness.

[0038] The partition and dust removal strip prevent splashing during spraying from contaminating the cleaned area. The spraying machine and pressure roller group are linked, and the spraying thickness is fed back to the pressure roller pressure adjustment system in real time to avoid excessive thickness causing extrusion.

[0039] Furthermore, the frame is equipped with casters at the bottom; the casters have a locking function, which facilitates the quick deployment and fixation of the equipment.

[0040] The device operates in the following stages:

[0041] Feeding and cleaning stage; flooring input, flame-retardant flooring enters the conveyor belt through the feed port. The conveyor belt is made of high-temperature resistant metal mesh belt and is equipped with a conveyor belt motor with adjustable speed.

[0042] The brush is driven by a telescopic cylinder and contacts the floor surface with a pressure of 0.3-0.5MPa. The nylon hard bristles remove particulate impurities.

[0043] The brush pressure is dynamically adjusted via PLC to adapt to different flooring materials such as fiberboard and particleboard.

[0044] The ion fan is located on both sides of the brush, releasing positive and negative ions to neutralize static electricity on the floor surface and prevent dust from being re-adsorbed.

[0045] The vacuum cleaner uses a flat suction nozzle to adsorb micro-dust with negative pressure; the three-step cleaning process improves the cleanliness of the floor surface, providing an ideal base for subsequent film spraying.

[0046] In the flame-retardant film spraying stage, the automatic spraying machine operates with dual-station spray heads symmetrically arranged vertically to spray a flame-retardant liquid film. The film thickness is controlled between 50-100μm. The spray heads have a built-in heating function to reduce the viscosity of the film liquid and ensure uniform spraying.

[0047] A partition separates the cleaning area from the spraying area, and conductive dust removal strips absorb splashing droplets, reducing material waste.

[0048] The camera detects the coating coverage and triggers an alarm and stops the conveyor belt when it detects missed areas or abnormal thickness. The coating parameters are linked to the conveyor belt speed to ensure uniform film coverage and avoid localized over-thickness or missed areas.

[0049] During the conveyor belt film lamination stage, the first spring pulls down the pressure roller with a preload of 50-100 N / mm to ensure a constant contact pressure of 0.5-1.2 MPa between the pressure roller and the floor surface.

[0050] The second spring connects to the adjacent pressure roller, allowing for lateral swing of ±2mm to compensate for irregularities at the floor edges or conveyor belt offset.

[0051] The pressure roller is divided into 3-5 independent units. Each section is constrained in vertical stroke by limiting groove 17 and limiting block 19 to adapt to the slight undulations of the floor surface.

[0052] The heating element softens the flame-retardant film, enhancing its penetration and bonding with the flooring substrate, with a peel strength ≥5N / mm.

[0053] Film curing stage; UV lamp assembly, wavelength 365nm, power density 500mW / cm³ 2 After 60 seconds of irradiation, the film curing rate is ≥95% and the hardness reaches 3H; the light shield prevents ultraviolet leakage and meets OSHA protection standards.

[0054] The temperature sensor monitors the temperature inside the frame in real time. When the temperature exceeds 150°C, it triggers a shutdown and activates the dry powder fire extinguishing device. The combined effect of heating and softening and ultraviolet curing reduces the internal stress of the film layer by 50% and the warpage is ≤0.1mm / m.

[0055] Conveyor belt discharge and quality inspection stage; finished flooring with film coating is conveyed to the next process through the discharge port, and the light shield ensures that the UV curing environment is sealed.

[0056] The camera detects surface defects such as bubbles and scratches, and defective products are automatically marked and sorted out.

[0057] Compared with the prior art, the present invention has the following beneficial effects:

[0058] 1. High-efficiency cleaning and surface pretreatment

[0059] By integrating a brush, an ion fan, and a vacuum cleaner, comprehensive cleaning of the floor surface is achieved. The nylon stiff-bristle brush removes large particles, while the telescopic cylinder dynamically adjusts pressure to prevent damage to the substrate. The ion fan releases positive and negative ions to neutralize static electricity and prevent secondary dust adsorption. The vacuum cleaner uses a 30° tilted flat suction nozzle and negative pressure to adsorb micro-dust down to the smallest particle size. This three-step cleaning process forms a closed loop, providing a dust-free and static-free substrate for film coating, thus improving film adhesion.

[0060] 2. Dynamic pressure system and uniform fit

[0061] The pressure roller assembly ensures uniform coating pressure through a spring system and segmented design.

[0062] The first spring pulls the pressure roller downwards with longitudinal tension, ensuring that the pressure roller is always in close contact with the floor surface and maintaining a constant contact pressure during the film coating process, thus avoiding pressure fluctuations that could lead to partial non-adhesion of the film or the formation of air bubbles.

[0063] When there are slight undulations or irregularities on the floor surface, the first spring automatically adjusts the vertical position of the pressure roller through elastic deformation to achieve dynamic compensation and ensure uniform pressure distribution.

[0064] The counterweight inside the pre-compression connector increases the downward pressure of the pressure roller, working in conjunction with the tension of the first spring to adapt to the lamination requirements of flooring of varying thicknesses. For example, thicker flooring requires greater downward pressure, and the combined design of the counterweight and spring allows for flexible adjustment of the pressure range. The Hooke's Law characteristic of the first spring enables it to respond in real time to minute changes in the flooring surface, absorbing or releasing energy through elastic deformation to maintain a constant pressure output. This longitudinal elastic system significantly reduces lamination defects caused by uneven substrate.

[0065] The second spring connects to the adjacent pressure roller, allowing lateral oscillation, compensating for conveyor belt misalignment, and ensuring uniform pressure distribution. The segmented pressure rollers, combined with limiting grooves, constrain vertical travel. The second spring connects to the ends of adjacent pressure rollers, transmitting the coating pressure segmentally to different areas, preventing single-point overpressure that could damage the film layer.

[0066] The pressure roller assembly is allowed to swing slightly laterally to address issues such as conveyor belt misalignment or floor edge irregularities, ensuring uniform pressure distribution and releasing stress through elastic deformation, thus avoiding stress concentration caused by rigid connections.

[0067] The heating element softens the membrane material, enhancing penetration, adhesion, and peel strength. Through synergistic action, it reduces film thickness tolerance, minimizes edge-to-center pressure differences, and completely eliminates bubbles and warping.

[0068] 3. Rapid curing and intelligent quality control

[0069] The device employs a combined heat-and-light curing process to improve efficiency. Heating components preheat the film material to reduce internal stress; an intelligent monitoring system uses cameras to detect coating uniformity and surface defects, automatically sorting defective products; temperature sensors provide real-time alarms and trigger shutdowns; process automation and data-driven processes support remote optimization, meeting the industrial production needs of high-end flame-retardant flooring. Attached Figure Description

[0070] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0071] Figure 1 A cross-sectional structural diagram of a flame-retardant floor coating device;

[0072] Figure 2 for Figure 1 Enlarged view of section A in the middle;

[0073] Figure 3 for Figure 1 Enlarged view of section B;

[0074] Figure 4This is a sectional view of the pressure roller mounting base.

[0075] Figure 5 A three-dimensional structural diagram of the pressure roller mounting base;

[0076] Figure 6 This is a schematic diagram of the end structure of the pressure roller.

[0077] In the picture:

[0078] 1. Frame;

[0079] 2. Conveyor belt;

[0080] 3. Conveyor belt motor;

[0081] 4. Dustproof strip;

[0082] 5. Framework;

[0083] 6. Telescopic cylinder;

[0084] 7. Camera;

[0085] 8. Vacuum cleaner;

[0086] 9. Automatic film spraying machine;

[0087] 10. Ultraviolet lamp assembly;

[0088] 11. Sunshade;

[0089] 12. Pressure roller mounting base;

[0090] 13. Heating components;

[0091] 14. Casters;

[0092] 15. Pressure roller;

[0093] 17. Limiting groove;

[0094] 18. Pre-stressed connectors;

[0095] 19. Limit block;

[0096] 20. Counterweight;

[0097] 21. The first spring;

[0098] 22. Through groove;

[0099] 24. The second spring;

[0100] 25. Pressure arm;

[0101] 26. Sleeve;

[0102] 27. Brush;

[0103] 28. Connecting arm;

[0104] 29. Ionizing fan;

[0105] 30. Flat suction port. Detailed Implementation

[0106] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0107] The application principle of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0108] Example 1

[0109] like Figure 1-6 As shown, a flame-retardant floor covering device includes a frame 1;

[0110] Frame 5 is fixedly installed above frame 1;

[0111] Automatic film spraying machine 9 is installed inside frame 5;

[0112] The pressure roller assembly is installed inside the frame 5. The pressure roller assembly includes multiple pressure rollers 15. The ends of the pressure rollers 15 are connected to pressure roller mounting seats 12. The surface of the pressure roller mounting seats 12 is provided with through grooves 22.

[0113] The pressure roller mounting base 12 has a cavity inside, which is located below the through groove 22 and is connected to the through groove 22. The end of the pressure roller 15 passes through the through groove 22 and penetrates the pressure roller mounting base 12. A limit groove 17 is provided on the inner surface of the through groove 22.

[0114] The end of the pressure roller 15 is sleeved with a pre-pressing connector 18. A limit block 19 is provided on the bottom outer surface of the pre-pressing connector 18. The limit block 19 moves along the surface of the limit groove 17. It also includes a first spring 21. The two ends of the first spring 21 are fixedly connected to the bottom of the cavity and the bottom of the pre-pressing connector 18, respectively.

[0115] The first spring 21 pulls the pressure roller 15 downwards by the spring force, so that the pressure roller is always in close contact with the floor surface, ensuring uniform film covering pressure and avoiding problems such as air bubbles or local non-adhesion.

[0116] The limiting groove 17 and the limiting block 19 limit the vertical movement range of the pressure roller to prevent the spring from being overloaded or the pressure roller from detaching from the mounting base.

[0117] The pre-compression connector 18 has a counterweight 20 installed inside, and preferably includes a second spring 24. Adjacent pressure rollers 15 are movably connected by the second spring, and the two ends of the second spring 24 are respectively connected to the ends of the adjacent pressure rollers 15.

[0118] The adjacent pressure rollers 15 are connected by the second spring 24 to achieve segmented pressure transmission and avoid single-point overpressure that could damage the film layer.

[0119] The flexible spring connection allows the pressure roller assembly to swing slightly laterally, accommodating irregularities at floor edges or slight shifts in the conveyor belt.

[0120] The second spring 24 works in conjunction with the first spring 21 to form a composite pressure system of "longitudinal tension + transverse flexibility" to improve the uniformity of film coating.

[0121] The pre-compression connector 18, combined with the counterweight 20, enhances the stability of the pressure roller under pressure and adapts to flooring of different thicknesses.

[0122] The first spring 24 works in conjunction with the counterweight 20 to dynamically compensate for minor unevenness on the floor surface during the film-coating process, ensuring constant pressure.

[0123] The limiting groove 17 and the spring form a "floating + limiting" mechanism, which allows the pressure roller to adapt itself while avoiding excessive displacement that could damage the structure.

[0124] It also includes a conveyor belt 2, which is located below the frame 5; a pressure roller 15 is located above the conveyor belt 2, which is a high-temperature resistant mesh belt.

[0125] High-temperature resistant mesh belt, withstanding temperatures up to 200℃, adaptable to heating environments, and prevents deformation.

[0126] Example 2

[0127] like Figure 1-6 As shown, based on Embodiment 1, a flame-retardant floor covering device further includes a dust removal component, which includes a pressure arm 25, which is installed on the upper surface inside the frame 5.

[0128] Brush 27 is installed at one end of pressure arm 25;

[0129] Sleeve 26 is sleeved on the outer surface of pressure arm 25, and connecting arm 28 is connected to the surface of sleeve 26;

[0130] Telescopic cylinder 6 is mounted on the upper surface of frame 5, and the output end of telescopic cylinder 6 is hinged to connecting arm 28.

[0131] An ion fan 29 and a vacuum cleaner 8 are installed inside the frame 5. The ion fan 29 is located on both sides of the brush 27. A flat suction port 30 is installed at the suction port of the vacuum cleaner 8. The flat suction port 30 is set at an angle of 30° to 60° to the surface of the conveyor belt 2.

[0132] The brush 27 adjusts the brush pressure through the pressure arm 25 and the telescopic cylinder 6, effectively removing large particles of impurities from the floor surface.

[0133] The ion fan 29 neutralizes static electricity and prevents dust from being re-adsorbed.

[0134] The flat suction port is tilted at 30° to 60° to enhance negative pressure adsorption efficiency and remove fine dust.

[0135] After the brush 27 cleans, the ion fan 29 immediately eliminates static electricity, and the vacuum cleaner 8 simultaneously vacuums, forming a closed-loop cleaning process of "sweeping-static electricity elimination-vacuuming" to improve the cleanliness of the floor surface.

[0136] The frame 5 has an inlet and an outlet at both ends. A dustproof strip 4 is installed at the inlet, and a conductive sponge block is installed at the end of the dustproof strip 4. A light shield 11 is installed at the outlet.

[0137] The automatic film spraying machine 9 has partitions on both sides, and dust removal strips are installed at the bottom of the partition near the dust removal component.

[0138] Example 3

[0139] like Figure 1-6 As shown, a flame-retardant floor covering device includes a frame 1;

[0140] Frame 5 is fixedly installed above frame 1;

[0141] Automatic film spraying machine 9 is installed inside frame 5;

[0142] The pressure roller assembly is installed inside the frame 5. The pressure roller assembly includes multiple pressure rollers 15. The ends of the pressure rollers 15 are connected to pressure roller mounting seats 12. The surface of the pressure roller mounting seats 12 is provided with through grooves 22.

[0143] The pressure roller mounting base 12 has a cavity inside, which is located below the through groove 22 and is connected to the through groove 22. The end of the pressure roller 15 passes through the through groove 22 and penetrates the pressure roller mounting base 12. A limit groove 17 is provided on the inner surface of the through groove 22.

[0144] The end of the pressure roller 15 is sleeved with a pre-pressing connector 18. A limit block 19 is provided on the bottom outer surface of the pre-pressing connector 18. The limit block 19 moves along the surface of the limit groove 17. It also includes a first spring 21. The two ends of the first spring 21 are fixedly connected to the bottom of the cavity and the bottom of the pre-pressing connector 18, respectively.

[0145] The first spring 21 pulls the pressure roller 15 downwards by the spring force, so that the pressure roller is always in close contact with the floor surface, ensuring uniform film covering pressure and avoiding problems such as air bubbles or local non-adhesion.

[0146] The limiting groove 17 and the limiting block 19 limit the vertical movement range of the pressure roller to prevent the spring from being overloaded or the pressure roller from detaching from the mounting base.

[0147] The pre-compression connector 18 has a counterweight 20 installed inside, and preferably includes a second spring 24. Adjacent pressure rollers 15 are movably connected by the second spring, and the two ends of the second spring 24 are respectively connected to the ends of the adjacent pressure rollers 15.

[0148] The adjacent pressure rollers 15 are connected by the second spring 24 to achieve segmented pressure transmission and avoid single-point overpressure that could damage the film layer.

[0149] The flexible spring connection allows the pressure roller assembly to swing slightly laterally, accommodating irregularities at floor edges or slight shifts in the conveyor belt.

[0150] The second spring 24 works in conjunction with the first spring 21 to form a composite pressure system of "longitudinal tension + transverse flexibility" to improve the uniformity of film coating.

[0151] The pre-compression connector 18, combined with the counterweight 20, enhances the stability of the pressure roller under pressure and adapts to flooring of different thicknesses.

[0152] The first spring 24 works in conjunction with the counterweight 20 to dynamically compensate for minor unevenness on the floor surface during the film-coating process, ensuring constant pressure.

[0153] The limiting groove 17 and the spring form a "floating + limiting" mechanism, which allows the pressure roller to adapt itself while avoiding excessive displacement that could damage the structure.

[0154] It also includes a conveyor belt 2, which is located below the frame 5; a pressure roller 15 is located above the conveyor belt 2, which is a high-temperature resistant mesh belt.

[0155] High-temperature resistant mesh belt, withstanding temperatures up to 200℃, adaptable to heating environments, and prevents deformation.

[0156] It also includes a dust removal assembly, which includes a pressure arm 25, which is mounted on the upper surface inside the frame 5;

[0157] Brush 27 is installed at one end of pressure arm 25;

[0158] Sleeve 26 is sleeved on the outer surface of pressure arm 25, and connecting arm 28 is connected to the surface of sleeve 26;

[0159] Telescopic cylinder 6 is mounted on the upper surface of frame 5, and the output end of telescopic cylinder 6 is hinged to connecting arm 28.

[0160] An ion fan 29 and a vacuum cleaner 8 are installed inside the frame 5. The ion fan 29 is located on both sides of the brush 27. A flat suction port 30 is installed at the suction port of the vacuum cleaner 8. The flat suction port 30 is set at an angle of 30° to 60° to the surface of the conveyor belt 2.

[0161] The brush 27 adjusts the brush pressure through the pressure arm 25 and the telescopic cylinder 6, effectively removing large particles of impurities from the floor surface.

[0162] The ion fan 29 neutralizes static electricity and prevents dust from being re-adsorbed.

[0163] The flat suction port is tilted at 30° to 60° to enhance negative pressure adsorption efficiency and remove fine dust.

[0164] After the brush 27 cleans, the ion fan 29 immediately eliminates static electricity, and the vacuum cleaner 8 simultaneously vacuums, forming a closed-loop cleaning process of "sweeping-static electricity elimination-vacuuming" to improve the cleanliness of the floor surface.

[0165] The frame 5 has an inlet and an outlet at both ends. A dustproof strip 4 is installed at the inlet, and a conductive sponge block is installed at the end of the dustproof strip 4. A light shield 11 is installed at the outlet.

[0166] The automatic film spraying machine 9 has partitions on both sides, and dust removal strips are installed at the bottom of the partition near the dust removal component.

[0167] An ultraviolet lamp group 10 is installed above the pressure roller group. The ultraviolet lamp group 10 is fixedly installed on the upper surface inside the frame 5. A heating component 13 is installed below the pressure roller group.

[0168] The lamp assembly quickly cures the flame-retardant film surface, increasing the film's hardness. The heating component 13 uses infrared heating at 80-120℃ to soften the film material and enhance its penetration and adhesion to the floor substrate.

[0169] After the film layer is heated and softened, ultraviolet light accelerates the curing process, forming a dual process of "thermal bonding + light curing" to improve film adhesion.

[0170] A temperature sensor is installed on the inner surface of the frame 5 and above the pressure roller assembly. A pressure sensor is installed on the surface of the pressure roller 15. Multiple cameras 7 are installed inside the frame 5. Symmetrical nozzles at the top and bottom ensure uniform film thickness.

[0171] The partition and dust removal strip 4 prevent splashing during spraying from contaminating the cleaned area. The spraying machine and pressure roller group are linked, and the spraying thickness is fed back to the pressure roller 15 pressure adjustment system in real time to avoid excessive thickness causing squeezing and overflow.

[0172] The bottom of the frame 1 is equipped with casters 14; casters 14: with locking function, which facilitates quick deployment and fixation of the equipment.

[0173] The device operates in the following stages:

[0174] Feeding and cleaning stage; flooring input, flame retardant flooring enters the conveyor belt 2 through the feed port. The conveyor belt is made of high temperature resistant metal mesh belt. The conveyor belt 2 is equipped with a conveyor belt motor 3, and the speed is adjustable.

[0175] The brush 27 is driven by the telescopic cylinder 6 and contacts the floor surface with a pressure of 0.3-0.5MPa. The nylon hard bristles remove particulate impurities.

[0176] The pressure of the brush 27 is dynamically adjusted via PLC to adapt to different flooring materials such as fiberboard and particleboard.

[0177] Ion fans 29 are located on both sides of brush 27, releasing positive and negative ions to neutralize static electricity on the floor surface and prevent secondary dust adsorption.

[0178] The vacuum cleaner 8 uses a flat suction port 30 to adsorb micro-dust with negative pressure; the three-step cleaning process improves the cleanliness of the floor surface, providing an ideal base for subsequent film spraying.

[0179] In the flame-retardant film spraying stage, the automatic spraying machine operates with 9 nozzles arranged symmetrically at both ends to spray a flame-retardant liquid film. The film thickness is controlled between 50-100μm. The nozzles have a built-in heating function to reduce the viscosity of the film liquid and ensure uniform spraying.

[0180] A partition separates the cleaning area from the spraying area, and conductive dust removal strips absorb splashing droplets, reducing material waste.

[0181] Camera 7 detects the coating coverage and triggers an alarm and stops conveyor belt 2 when it detects missed spraying or abnormal thickness. The spraying parameters are linked to the conveyor belt speed to ensure uniform film coverage and avoid local over-thickness or missed coating.

[0182] During the conveyor belt film lamination stage, the first spring 21 pulls down the pressure roller with a preload of 50-100 N / mm to ensure a constant contact pressure of 0.5-1.2 MPa between the pressure roller 15 and the floor surface.

[0183] The second spring 24 connects to the adjacent pressure roller 15, allowing for lateral swing of ±2mm to compensate for irregularities at the floor edge or conveyor belt offset.

[0184] The pressure roller 15 is divided into 3-5 independent units. Each segment is constrained in vertical stroke by the limiting groove 17 and the limiting block 19 to adapt to the slight undulations of the floor surface.

[0185] Heating component 13 softens the flame-retardant film, enhancing its penetration and bonding with the floor substrate, with a peel strength ≥5N / mm.

[0186] Film curing stage; UV lamp group 10, wavelength 365nm, power density 500mW / cm³ 2 After 60 seconds of irradiation, the film curing rate is ≥95% and the hardness reaches 3H; the light shield 11 prevents ultraviolet leakage and meets OSHA protection standards.

[0187] The temperature sensor monitors the temperature inside frame 5 in real time. When the temperature exceeds 150°C, it triggers a shutdown and activates the dry powder fire extinguishing device. The combined effect of heating and softening and ultraviolet curing reduces the internal stress of the film layer by 50% and the warpage is ≤0.1mm / m.

[0188] Conveyor belt discharge and quality inspection stage; finished flooring with film coating is conveyed to the next process through the discharge port, and light shield 11 ensures that the UV curing environment is sealed.

[0189] Quality inspection: Camera 7 detects surface defects such as bubbles and scratches, and defective products are automatically marked and sorted out.

[0190] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within the present invention.

Claims

1. A flame-retardant flooring coating device, characterized in that: Including the frame (1); The frame (5) is fixedly installed above the frame (1); An automatic film spraying machine (9) is installed inside the frame (5); The pressure roller assembly is installed inside the frame (5). The pressure roller assembly includes multiple pressure rollers (15). The ends of the pressure rollers (15) are connected to pressure roller mounting seats (12). The surface of the pressure roller mounting seats (12) is provided with through grooves (22). The pressure roller mounting base (12) has a cavity inside, the cavity is located below the through groove (22), the cavity is connected to the through groove (22), the end of the pressure roller (15) passes through the through groove (22) and penetrates the pressure roller mounting base (12), and the inner surface of the through groove (22) is provided with a limiting groove (17); The end of the pressure roller (15) is fitted with a pre-pressing connector (18). The bottom outer surface of the pre-pressing connector (18) is provided with a limiting block (19). The limiting block (19) moves along the surface of the limiting groove (17). It also includes a first spring (21). The two ends of the first spring (21) are fixedly connected to the bottom of the cavity and the bottom of the pre-pressing connector (18), respectively.

2. The flame-retardant flooring coating device according to claim 1, characterized in that: The pre-pressing connector (18) is equipped with a counterweight (20) and includes a second spring (24). The adjacent pressure rollers (15) are movably connected by the second spring, and the two ends of the second spring (24) are respectively connected to the ends of the adjacent pressure rollers (15).

3. The flame-retardant flooring coating device according to claim 2, characterized in that: It also includes a conveyor belt (2) located below the frame (5); and a pressure roller (15) located above the conveyor belt (2).

4. The flame-retardant flooring coating device according to claim 1, characterized in that: It also includes a dust removal assembly, which includes a pressure arm (25) mounted on the upper surface inside the frame (5); A brush (27) is mounted on one end of the pressure arm (25); Sleeve (26), the sleeve (26) is sleeved on the outer surface of the pressure arm (25), and a connecting arm (28) is connected to the surface of the sleeve (26); Telescopic cylinder (6) is mounted on the upper surface of the frame (5), and the output end of the telescopic cylinder (6) is hinged to the connecting arm (28).

5. The flame-retardant flooring coating device according to claim 4, characterized in that: An ion fan (29) and a vacuum cleaner (8) are installed inside the frame (5). The ion fan (29) is located on both sides of the brush (27). A flat suction port (30) is installed at the suction port of the vacuum cleaner (8). The flat suction port (30) is set at an angle of 30° to 60° to the surface of the conveyor belt (2).

6. The flame-retardant flooring coating device according to claim 1, characterized in that: The frame (5) has an inlet and an outlet at both ends. A dustproof strip (4) is installed at the inlet, and a conductive sponge block is installed at the end of the dustproof strip (4). A light shield (11) is installed at the outlet.

7. The flame-retardant flooring coating device according to claim 1, characterized in that: The automatic film spraying machine (9) is provided with partitions on both sides, and a dust removal strip is installed at the bottom of the partition near the dust removal component.

8. The flame-retardant floor coating device according to claim 1, characterized in that: An ultraviolet lamp assembly (10) is installed above the pressure roller assembly. The ultraviolet lamp assembly (10) is fixedly installed on the upper surface inside the frame (5). A heating assembly (13) is installed below the pressure roller assembly.

9. A flame-retardant floor coating device according to claim 1, characterized in that: A temperature sensor is installed on the inner surface of the frame (5) and above the pressure roller assembly. A pressure sensor is installed on the surface of the pressure roller assembly. Multiple cameras (7) are installed inside the frame (5).

10. A flame-retardant floor coating device according to claim 1, characterized in that: The frame (1) is equipped with casters (14) at its bottom.

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