Flame retardant coating equipment and method for producing flame retardant decorative paper using the equipment

Abstract

The invention discloses a flame retardant coating device. When the flame retardant is coated on a substrate by a coating device, the substrate is squeezed by a rolling device so that the flame retardant fully penetrates into the paper fiber, thereby improving the flame retardant performance of the flame retardant decorative paper; and in the air-drying device, the dust cover can prevent dust from falling on the flame retardant on the surface of the substrate, and the dust cover and the driving cylinder are arranged to open the dust cover, so as to conveniently guide the substrate to pass through the part where the dust cover is located; a plurality of transmission rollers are used to support the substrate during transportation; the flame retardant on the substrate is air-dried by an exhaust fan, an air supply pipeline, and a plurality of cooling pipes; during the air-drying process, the flame retardant will emit odor, and the activated carbon adsorption mechanism, the air collection hood and the air inlet pipe between the exhaust fan can be used to purify and adsorb the odor; the linkage mechanism between the air supply pipeline and the transmission roller can drive the transmission roller to rotate, so as to reduce the friction resistance during the transportation of the substrate.

Description

Technical Field

[0001] The invention relates to the technical field of flame retardant decorative paper processing, and in particular to flame retardant coating equipment and a method for producing flame retardant decorative paper using the equipment. Background Art

[0002] ‌Flame retardant decorative paper‌ is decorative paper with flame retardant properties, mainly used for interior decoration and decoration, with non-combustible or difficult-to-combust properties. Flame retardant paper is generally divided into two categories: one is paper made of asbestos fiber, which does not undergo any changes in fire, also known as fireproof paper; the other is decorative paper that has flame retardant chemicals added to the pulp or treated with flame retardants.

[0003] In the production process of paper treated with flame retardants, the flame retardant coating device of the flame retardant coating equipment is required to coat the flame retardant on the paper. For example, the working principle of the coating device of the comma roller coating equipment is mainly based on the reverse transfer coating principle of the comma scraper. The comma scraper is fixed and does not rotate, and the notched edge of the scraper faces the tangent point of the coating roller or the backing roller, so as to scrape the passing coating to ensure uniform coating.

[0004] The process of coating decorative paper with flame retardant coating equipment involves unwinding, coating, air drying and winding. However, for the flame retardant coating of decorative paper, the flame retardant after coating is located on one side of the decorative paper, but the flame retardant is difficult to fully and evenly penetrate into the paper fibers, resulting in the flame retardant performance of the flame retardant decorative paper after production is not ideal. Summary of the invention

[0005] The object of the present invention is to provide a flame retardant coating device, which can press the flame retardant into a substrate by adding a roller pressing device, thereby improving the flame retardant performance of flame retardant decorative paper.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a flame retardant coating device, comprising a machine body, a reeling device arranged on the machine body, a coating device arranged on the machine body, a drying device arranged on the machine body, and a winding device arranged on the machine body, wherein the machine body is provided with a roller pressing device located between the coating device and the drying device, and the roller pressing device comprises a frame arranged on both sides of the machine body, a lower pressure roller rotatably connected between the two frames at both ends, two lifting seats arranged on the frame for lifting, an upper pressure roller rotatably connected between the two lifting seats at both ends, and an adjustment component arranged between the frame and the lifting seat for adjusting the height of the lifting seat; the drying device comprises a plurality of rollers rotatably connected to the machine body and arranged side by side. A transmission roller is arranged on the machine body, a dust cover is hingedly arranged on the rear side, a driving cylinder is arranged between the front side of the machine body and the front side of the dust cover and drives the front side of the dust cover to rotate upward, an exhaust fan is arranged on the top of the dust cover, a plurality of cooling pipes are arranged in the dust cover, and an air supply pipeline, the air supply pipeline is used to transport the air of the exhaust fan to the plurality of cooling pipes, and a plurality of cooling air outlets are arranged at the bottom of the cooling pipes; an air collecting hood is arranged on the top of the dust cover, an air inlet pipe is arranged between the air inlet of the exhaust fan and the air collecting hood, and an activated carbon adsorption mechanism for adsorbing odors is arranged in the air collecting hood; a linkage mechanism is arranged between the air supply pipeline and the plurality of transmission rollers to drive the plurality of transmission rollers to rotate in the same direction to assist in the transportation of the substrate.

[0007] By adopting the above technical scheme, when the flame retardant is coated on the substrate by the coating device, the substrate is squeezed by the rolling device so that the flame retardant can fully penetrate into the paper fibers, thereby improving the flame retardant performance of the flame retardant decorative paper; and in the air-drying device, the dust cover can prevent dust from falling on the flame retardant on the surface of the substrate, and the setting of the dust cover and the driving cylinder can realize the opening of the dust cover, so as to conveniently guide the substrate through the part where the dust cover is located; multiple transmission rollers are used to support the substrate during transportation; the flame retardant on the substrate is air-dried by the exhaust fan, the air supply pipeline, and multiple cooling pipes; the flame retardant will emit odor during the air-drying process, and the activated carbon adsorption mechanism, the air collection hood and the air inlet pipe between the exhaust fan can be used to purify and adsorb the odor; the linkage mechanism between the air supply pipeline and the transmission roller can drive the transmission roller to rotate to reduce the friction resistance during the transportation of the substrate.

[0008] The present invention is further configured as follows: the activated carbon adsorption mechanism includes a grille frame hingedly arranged at the dust cover at the rear side, an elastic connecting component arranged between the front side of the grille frame and the dust cover and driving the grille frame to fit into the dust cover, a plug-in frame arranged on the grille frame and having an opening facing the front side, a rubber buffer sleeve arranged on the peripheral side of the plug-in frame and used to abut against the inner circle of the bottom of the wind collecting cover, an activated carbon air filter plate plugged into the plug-in frame from the side, and a connecting rod assembly arranged between the grille frame and the front side of the machine body and overcoming the elastic connecting component to make the front side of the grille frame rotate downward during the upward rotation of the front side of the dust cover; when the front side of the dust cover rotates upward to the limit state, the opening height of the plug-in frame is lower than the height of the bottom of the front side of the dust cover, and the rubber buffer sleeve does not interfere with the plug-in process of the activated carbon air filter plate.

[0009] By adopting the above technical scheme, when the exhaust fan is working, the air in the dust cover passes through the activated carbon air filter plate of the activated carbon adsorption mechanism and then enters the wind collecting hood to form air flow. During the air flow, the activated carbon air filter plate can purify the air and absorb odor; at the same time, because the activated carbon adsorption mechanism needs to be replaced regularly, when the front side of the dust cover rotates upward to the limit state, the connecting rod assembly overcomes the effect of the elastic connection assembly, so that the front side of the grille frame rotates downward, so that the opening height of the plug-in frame is lower than the height of the bottom of the front side of the dust cover, and it is convenient to disassemble and replace the new activated carbon air filter plate; at the same time, a rubber buffer sleeve is provided on the peripheral side of the plug-in frame to achieve sealing with the inner ring of the bottom of the wind collecting hood.

[0010] The present invention is further configured as follows: the elastic connection component includes two connecting plates arranged on the front side of the grille frame, two arc-shaped rods respectively arranged on the connecting plates and passing through the dust cover, two first compression springs respectively sleeved on the parts of the arc-shaped rods passing through the dust cover, and two anti-detachment end covers respectively arranged on the upper ends of the arc-shaped rods, the center of the arc-shaped rods is on the rotation axis of the grille frame, and the elastic connection component does not affect the insertion of the activated carbon air filter plate.

[0011] By adopting the above technical solution, the elastic connection component includes a connecting plate, an arc-shaped rod, a first compression spring, and an anti-detachment end cover. At this time, the setting of the first compression spring can keep the grille frame in a state of being fitted inside the dust cover; when the front side of the dust cover rotates upward to the limit state, the connecting rod assembly overcomes the elastic force of the elastic connection component to rotate the grille frame downward, and the center of the arc-shaped rod is on the rotation axis of the grille frame, which can ensure the basic conditions for the grille frame to rotate downward.

[0012] The present invention is further configured as follows: the connecting rod assembly includes two first connecting rods hinged at one end to the machine body, and two second connecting rods hinged at one end to the first connecting rods and at the other end to the grid frame, and the connecting rod assembly does not affect the insertion of the activated carbon air filter plate.

[0013] By adopting the above technical solution, the connecting rod assembly includes a first connecting rod and a second connecting rod. When the front side of the dust cover rotates upward to the extreme state, the first connecting rod and the second connecting rod rotate relative to each other to pull the front side of the grille frame, thereby realizing the downward rotation of the grille frame.

[0014] The present invention is further configured as follows: the air supply pipeline includes an air supply main pipe arranged on the rear side of the machine body, a plurality of air supply branch pipes arranged on the upper surface of the air supply main pipe, a plurality of first hoses arranged between the air supply branch pipe and one end of the cooling pipe, a connecting pipe arranged at the air outlet end of the exhaust fan, and a second hose arranged between the connecting pipe and the air supply main pipe; the linkage mechanism includes a rotating shaft arranged at one end of the transmission roller and rotatably connected to the air supply branch pipe through a bearing, and an impeller arranged on the rotating shaft and located in the air supply branch pipe.

[0015] By adopting the above technical solution, when the exhaust fan supplies air to the cooling pipe through the air supply pipeline, the air flows through the air supply branch pipe, driving the impeller to rotate, and the impeller drives the transmission roller to rotate, so as to reduce the friction resistance during the transportation of the substrate.

[0016] The present invention is further configured as follows: two limit shafts are provided for lifting on the front side of the upper surface of the plug-in frame, a pressing head is provided on the upper end of the limit shaft, a second compression spring is sleeved on the limit shaft with both ends abutting between the plug-in frame and the pressing head, a limit hole is provided at the position of the activated carbon air filter plate corresponding to the limit shaft, and a pressing block is provided at the position of the air collecting hood corresponding to the pressing head; when the dust cover is in the initial state, the pressing block applies force downward to the pressing head so that the lower end of the limit shaft is embedded in the limit hole; when the front side of the dust cover rotates upward to the limit state, the pressing block is separated from the pressing head, and the lower end of the limit shaft is disengaged from the limit hole.

[0017] By adopting the above technical solution, a limiting shaft is set to limit the activated carbon air filter plate, and when the dust cover is in the initial state, the pressing block applies force downward to the pressing head so that the lower end of the limiting shaft is embedded in the limiting hole; when the front side of the dust cover is rotated upward to the limit state, the pressing block is separated from the pressing head, and the lower end of the limiting shaft is disengaged from the limiting hole, which is convenient for use.

[0018] The present invention is further configured as follows: the adjustment assembly comprises an adjustment screw which is threadedly connected to the frame and whose lower end is rotatably connected to the lifting seat, and an adjustment hand wheel arranged on the adjustment screw.

[0019] By adopting the above technical solution, the connection position of the adjusting screw and the frame is changed by rotating the adjusting hand wheel, so as to adjust the height of the lifting seat and thus adjust the height of the upper pressure roller.

[0020] The object of the present invention is to provide a method for producing flame retardant decorative paper by flame retardant coating equipment, by adding a roller pressing device to press the flame retardant into a substrate, thereby improving the flame retardant performance of the flame retardant decorative paper.

[0021] The above technical objectives of the present invention are achieved through the following technical solutions: A method for producing flame retardant decorative paper using a flame retardant coating device comprises the following steps: (S1) The substrate is unwound through an unwinding device; (S2) the substrate passes through a coating device, and the coating device coats the flame retardant on the surface of the substrate; (S3) The substrate coated with the flame retardant passes through a rolling device, and the upper and lower rollers of the rolling device press the flame retardant into the substrate to improve the uniformity of the flame retardant after penetration on the substrate; (S4) When the substrate passes through the air drying device, the dust cover can prevent dust from falling on the substrate, and the exhaust fan inputs cooling air into the cooling pipe through the air supply pipeline, and the multiple cooling air ports of the cooling pipe air dry the substrate coated with the flame retardant; (S5) The substrate is rolled up by a rolling device.

[0022] The present invention is further configured as follows: in step (S3), by connecting the exhaust fan to the top of the dust cover, the air in the dust cover is filtered by the activated carbon adsorption mechanism and then used for air drying, thereby purifying the odor generated during the air drying process of the flame retardant; at the same time, the linkage mechanism between the air supply pipeline and the multiple transmission rollers can drive the multiple transmission rollers to rotate in the same direction to assist in the transportation of the substrate.

[0023] The present invention is further configured as follows: in step (S3), the air output from the dust cover is purified by the activated carbon adsorption mechanism, and when a new activated carbon air filter plate needs to be replaced, the front side of the dust cover is rotated upward to the limit state by driving the cylinder, and under the action of the connecting rod assembly, the opening height of the plug-in frame is made lower than the height of the bottom of the front side of the dust cover, thereby achieving direct removal of the old activated carbon air filter plate and installation of a new activated carbon air filter plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is a schematic structural diagram of Example 1; Figure 2 yes Figure 1 A local enlarged view at A in the figure; Figure 3 It is a structural schematic diagram of the upper half of Example 1; Figure 4 is a partial structural cross-sectional view of the upper half of Example 1 (the dust cover is in the initial state); Figure 5is a schematic diagram of the partial structure of the upper plate portion in Example 1 (the dust cover is rotated upward to the limit state); Figure 6 yes Figure 4 A partial enlarged view at B in the figure; Figure 7 is a schematic diagram of a local structure of an air-drying device in Example 1; Figure 8 yes Figure 7 A partial enlarged view of point C in the figure.

[0025] Figure numerals: 1, machine body; 2, unwinding device; 3, coating device; 4, rolling device; 41, frame; 42, lower pressure roller; 43, lifting seat; 44, upper pressure roller; 45, adjustment component; 451, adjustment screw; 452, adjustment hand wheel; 5, air drying device; 51, transmission roller; 52, dust cover; 53, driving cylinder; 54, exhaust fan; 541, air inlet pipe; 55, cooling pipe; 551, cooling air outlet; 56, air supply pipeline; 561, air supply main pipe; 562, air supply branch pipe; 563, first hose; 564, connecting pipe; 565, second hose; 57, collection pipe Wind hood; 571, pressing block; 58, activated carbon adsorption mechanism; 581, grille frame; 582, elastic connection assembly; 5821, connecting piece; 5822, arc rod; 5823, first compression spring; 5824, anti-drop end cover; 583, plug-in frame; 5831, limit shaft; 5832, pressing head; 5833, second compression spring; 584, rubber buffer sleeve; 585, activated carbon air filter plate; 586, connecting rod assembly; 5861, first connecting rod; 5862, second connecting rod; 59, linkage mechanism; 591, rotating shaft; 592, impeller; 6, winding device. DETAILED DESCRIPTION

[0026] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0027] Embodiment 1: A flame retardant coating device, such as Figure 1 As shown, it includes a machine body 1, a reeling device 2 arranged on the machine body 1, a coating device 3 arranged on the machine body 1, an air-drying device 5 arranged on the machine body 1, a reeling device 6 arranged on the machine body 1, and a rolling device 4 arranged between the coating device 3 and the air-drying device 5.

[0028] like Figure 1 and Figure 2As shown, the roller pressing device 4 includes a frame 41 arranged on both sides of the machine body 1, a lower pressing roller 42 whose two ends are rotatably connected between the two frames 41, two lifting seats 43 arranged on the frame 41, an upper pressing roller 44 whose two ends are rotatably connected between the two lifting seats 43, and an adjusting component 45 arranged between the frame 41 and the lifting seat 43 to adjust the height of the lifting seat 43. The adjusting component 45 includes an adjusting screw 451 which is threadedly connected to the frame 41 and whose lower end is rotatably connected to the lifting seat 43, and an adjusting hand wheel 452 arranged on the adjusting screw 451.

[0029] like Figure 1 , Figure 3 and Figure 4 As shown, the air-drying device 5 includes a plurality of transmission rollers 51 rotatably connected to the machine body 1 and arranged side by side, a dust cover 52 hingedly arranged on the machine body 1 at the rear side, a driving cylinder 53 hingedly arranged at both ends between the front side of the machine body 1 and the front side of the dust cover 52 and driving the front side of the dust cover 52 to rotate upward, an exhaust fan 54 arranged on the top of the dust cover 52, a plurality of cooling pipes 55 arranged in the dust cover 52, and an air supply pipeline 56, the air supply pipeline 56 is used to transport the air of the exhaust fan 54 to the plurality of cooling pipes 55, and a plurality of cooling air outlets 551 are arranged at the bottom of the cooling pipes 55; an air collecting hood 57 is arranged on the top of the dust cover 52, an air inlet pipe 541 is arranged between the air inlet of the exhaust fan 54 and the air collecting hood 57, and an activated carbon adsorption mechanism 58 for adsorbing odor is arranged in the air collecting hood 57; a linkage mechanism 59 is arranged between the air supply pipeline 56 and the plurality of transmission rollers 51 to drive the plurality of transmission rollers 51 to rotate in the same direction to assist in the transportation of the substrate.

[0030] like Figure 4 , Figure 6 and Figure 8 As shown, the activated carbon adsorption mechanism 58 includes a grille frame 581 hingedly arranged at the dust cover 52 at the rear side, an elastic connection component 582 arranged between the front side of the grille frame 581 and the dust cover 52 and driving the grille frame 581 to fit inside the dust cover 52, a plug-in frame 583 arranged on the grille frame 581 and having an opening facing the front side, a rubber buffer sleeve 584 arranged on the peripheral side of the plug-in frame 583 and used to abut against the inner circle of the bottom of the wind collecting cover 57, an activated carbon air filter plate 585 plugged into the plug-in frame 583 from the side, and a connecting rod component 586 arranged between the grille frame 581 and the front side of the body 1 and overcoming the elastic connection component 582 during the upward rotation of the front side of the dust cover 52 so that the front side of the grille frame 581 rotates downward. When the front side of the dust cover 52 rotates upward to the limit state, the opening height of the plug-in frame 583 is lower than the height of the bottom of the front side of the dust cover 52, and the rubber buffer sleeve 584 does not interfere with the plug-in process of the activated carbon air filter plate 585.

[0031] like Figure 4 and Figure 5 As shown, the elastic connection assembly 582 includes two connecting pieces 5821 arranged at the front side of the grid frame 581, two arc-shaped rods 5822 respectively arranged on the connecting pieces 5821 and passing through the dust cover 52, two first compression springs 5823 respectively sleeved on the part of the arc-shaped rod 5822 passing through the dust cover 52, and two anti-drop end caps 5824 respectively arranged on the upper ends of the arc-shaped rods 5822. The center of the arc-shaped rods 5822 is located on the rotation axis of the grid frame 581. The elastic connection assembly 582 does not affect the plugging of the activated carbon air filter plate 585. The connecting rod assembly 586 includes two first connecting rods 5861 with one end hinged on the body 1, and two second connecting rods 5862 with one end hinged on the first connecting rod 5861 and the other end hinged on the grid frame 581. The connecting rod assembly 586 does not affect the plugging of the activated carbon air filter plate 585.

[0032] like Figure 4 and Figure 6 As shown, at the same time, two limit shafts 5831 are provided on the front side of the upper surface of the plug-in frame 583 for lifting, a pressing head 5832 is provided on the upper end of the limit shaft 5831, a second compression spring 5833 is sleeved on the limit shaft 5831 with both ends abutting between the plug-in frame 583 and the pressing head 5832, a limit hole (not shown in the figure) is provided at the position of the activated carbon air filter plate 585 corresponding to the limit shaft 5831, and a pressing block 571 is provided at the position of the air collecting hood 57 corresponding to the pressing head 5832; when the dust cover 52 is in the initial state, the pressing block 571 applies force downward to the pressing head 5832 so that the lower end of the limit shaft 5831 is embedded in the limit hole; when the front side of the dust cover 52 rotates upward to the limit state, the pressing block 571 is separated from the pressing head 5832, and the lower end of the limit shaft 5831 is separated from the limit hole.

[0033] like Figure 3 and Figure 4 As shown, the air supply pipeline 56 includes an air supply main pipe 561 arranged at the rear side of the machine body 1, a plurality of air supply branch pipes 562 arranged on the upper surface of the air supply main pipe 561, a plurality of first hoses 563 arranged between the air supply branch pipes 562 and one end of the cooling pipe 55, a connecting pipe 564 arranged at the air outlet end of the exhaust fan 54, and a second hose 565 arranged between the connecting pipe 564 and the air supply main pipe 561. The linkage mechanism 59 includes a rotating shaft 591 arranged at one end of the transmission roller 51 and rotatably connected to the air supply branch pipe 562 through a bearing, and an impeller 592 arranged on the rotating shaft 591 and located in the air supply branch pipe 562.

[0034] Implementation effect: When the flame retardant is coated on the substrate by the coating device 3, the substrate is squeezed by the rolling device 4 so that the flame retardant can fully penetrate into the paper fiber, thereby improving the flame retardant performance of the flame retardant decorative paper; and in the air-drying device 5, the dust cover 52 can prevent dust from falling on the flame retardant on the surface of the substrate. The dust cover 52 and the driving cylinder 53 can be opened to facilitate guiding the substrate through the part where the dust cover 52 is located; multiple transmission rollers 51 are used to support the substrate during transportation; the flame retardant on the substrate is air-dried by the exhaust fan 54, the air supply pipeline 56, and the multiple cooling pipes 55; during the air-drying process, the flame retardant will emit odor, and the activated carbon adsorption mechanism 58, the air collection cover 57 and the air inlet pipe 541 between the exhaust fan 54 can be used to purify and adsorb the odor; the linkage mechanism 59 between the air supply pipeline 56 and the transmission roller 51 can drive the transmission roller 51 to rotate to reduce the friction resistance during the transportation of the substrate.

[0035] When the exhaust fan 54 is working, the air in the dust cover 52 passes through the activated carbon air filter plate 585 of the activated carbon adsorption mechanism 58 and then enters the wind collecting hood 57, forming air flow. During the air flow, the activated carbon air filter plate 585 can purify the air and absorb odor; at the same time, because the activated carbon adsorption mechanism 58 needs to be replaced regularly, when the front side of the dust cover 52 rotates upward to the limit state, at this time, the connecting rod assembly 586 overcomes the effect of the elastic connection assembly 582, so that the front side of the grille frame 581 rotates downward, so that the opening height of the plug-in frame 583 is lower than the height of the bottom of the front side of the dust cover 52, and it is convenient to disassemble and replace the new activated carbon air filter plate 585; at the same time, a rubber buffer sleeve 584 is provided on the peripheral side of the plug-in frame 583 to achieve sealing with the inner ring at the bottom of the wind collecting hood 57.

[0036] The elastic connection assembly 582 includes a connection piece 5821, an arc rod 5822, a first compression spring 5823, and an anti-drop end cap 5824. At this time, the first compression spring 5823 can keep the grid frame 581 in a state of being fitted in the dust cover 52. When the front side of the dust cover 52 rotates upward to the limit state, the connecting rod assembly 586 overcomes the elastic force of the elastic connection assembly 582 to rotate the grid frame 581 downward. The center of the arc rod 5822 is on the rotation axis of the grid frame 581, which can ensure the basic conditions for the grid frame 581 to rotate downward. The connecting rod assembly 586 includes a first connecting rod 5861 and a second connecting rod 5862. When the front side of the dust cover 52 rotates upward to the limit state, the first connecting rod 5861 and the second connecting rod 5862 rotate relative to each other to pull the front side of the grid frame 581, thereby realizing the grid frame 581 to rotate downward.

[0037] When the exhaust fan 54 supplies air to the cooling pipe 55 through the air supply pipe 56, the air flows through the air supply branch pipe 562, driving the impeller 592 to rotate, and the impeller 592 drives the transmission roller 51 to rotate, so as to reduce the friction resistance during the transportation of the substrate. The limit shaft 5831 is set to limit the activated carbon air filter plate 585, and when the dust cover 52 is in the initial state, the pressing block 571 applies force downward to the pressing head 5832, so that the lower end of the limit shaft 5831 is embedded in the limit hole; when the front side of the dust cover 52 rotates upward to the limit state, the pressing block 571 is separated from the pressing head 5832, and the lower end of the limit shaft 5831 is separated from the limit hole, which is convenient for use. By rotating the adjustment hand wheel 452, the connection position of the adjustment screw 451 and the frame 41 is changed, so as to adjust the height of the lifting seat 43, thereby adjusting the height of the upper pressure roller 44.

[0038] Embodiment 2: A method for producing flame-retardant decorative paper by flame retardant coating equipment, comprising the following steps: (S1) a substrate is unwound through an unwinding device 2; (S2) the substrate passes through a coating device 3, and the coating device 3 coats a flame retardant on the surface of the substrate; (S3) the substrate coated with the flame retardant passes through a rolling device 4, and the extrusion effect of the upper pressing roller 44 and the lower pressing roller 42 of the rolling device 4 presses the flame retardant into the substrate, thereby improving the uniformity of the flame retardant after penetration on the substrate; (S4) during the process of the substrate passing through the air-drying device 5, the dust cover 52 can prevent dust from falling on the substrate, and the exhaust fan 54 inputs cooling air into the cooling pipe 55 through the air supply pipeline 56, and the multiple cooling air outlets 551 of the cooling pipe 55 air-dry the substrate coated with the flame retardant; (S5) the substrate is rolled up by the winding device 6.

[0039] In step (S3), the exhaust fan 54 is connected to the top of the dust cover 52, so that the air in the dust cover 52 is filtered by the activated carbon adsorption mechanism 58 and then used for air drying, thereby purifying the odor generated during the air drying of the flame retardant; at the same time, the linkage mechanism 59 between the air supply pipeline 56 and the multiple transmission rollers 51 can drive the multiple transmission rollers 51 to rotate in the same direction to assist in the transportation of the substrate. In addition, in step (S3), the air output from the dust cover 52 is purified by the activated carbon adsorption mechanism 58. When a new activated carbon air filter plate 585 needs to be replaced, the front side of the dust cover 52 is rotated upward to the limit state by driving the cylinder 53, and the opening height of the plug-in frame 583 is lower than the height of the bottom of the front side of the dust cover 52 under the action of the connecting rod assembly 586, so that the old activated carbon air filter plate 585 can be directly removed and a new activated carbon air filter plate 585 can be installed.

[0040] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A flame retardant coating device, comprising a machine body (1), an unwinding device (2) arranged on the machine body (1), a coating device (3) arranged on the machine body (1), an air drying device (5) arranged on the machine body (1), and a winding device (6) arranged on the machine body (1), characterized in that: The machine body (1) is provided with a roller pressing device (4) located between the coating device (3) and the air drying device (5), and the roller pressing device (4) comprises a frame (41) arranged on both sides of the machine body (1), a lower pressing roller (42) with two ends rotatably connected between the two frames (41), two lifting seats (43) arranged on the frame (41) for lifting, an upper pressing roller (44) with two ends rotatably connected between the two lifting seats (43), and an adjusting component (45) arranged between the frame (41) and the lifting seat (43) for adjusting the height of the lifting seat (43); The air drying device (5) comprises a plurality of transmission rollers (51) rotatably connected to the machine body (1) and arranged side by side, a dust cover (52) hingedly arranged on the machine body (1) at the rear, a driving cylinder (53) arranged between the front side of the machine body (1) and the front side of the dust cover (52) and driving the front side of the dust cover (52) to rotate upward, an exhaust fan (54) arranged on the top of the dust cover (52), a plurality of cooling pipes (55) arranged in an array in the dust cover (52), and an air supply pipeline (56), wherein the air supply pipeline (56) is used to transport air from the exhaust fan (54) to the Among the multiple cooling tubes (55), the bottom of the cooling tubes (55) is arranged with multiple cooling air outlets (551); the top of the dust cover (52) is provided with an air collecting cover (57); an air inlet pipe (541) is provided between the air inlet of the exhaust fan (54) and the air collecting cover (57); an activated carbon adsorption mechanism (58) for adsorbing odor is provided in the air collecting cover (57); and a linkage mechanism (59) is provided between the air supply pipeline (56) and the multiple transmission rollers (51) to drive the multiple transmission rollers (51) to rotate in the same direction to assist in the transportation of the substrate.

2. A flame retardant coating device according to claim 1, characterized in that: The activated carbon adsorption mechanism (58) comprises a grille frame (581) hingedly arranged at the rear side of the dust cover (52), an elastic connection component (582) arranged between the front side of the grille frame (581) and the dust cover (52) and driving the grille frame (581) to fit into the dust cover (52), a plug-in frame (583) arranged on the grille frame (581) and having an opening facing the front side, a rubber buffer sleeve (584) arranged on the peripheral side of the plug-in frame (583) and used to abut against the inner ring of the bottom of the wind collecting cover (57), and a side plug-in component (585) arranged on the plug-in frame (583). 3) an activated carbon air filter plate (585) inside, and a connecting rod assembly (586) arranged between the grille frame (581) and the front side of the body (1) and overcoming the elastic connection assembly (582) during the upward rotation of the front side of the dust cover (52) to allow the front side of the grille frame (581) to rotate downward; when the front side of the dust cover (52) rotates upward to an extreme state, the opening height of the plug-in frame (583) is lower than the height of the bottom of the front side of the dust cover (52), and the rubber buffer sleeve (584) does not interfere with the plug-in process of the activated carbon air filter plate (585).

3. A flame retardant coating device according to claim 2, characterized in that: The elastic connection assembly (582) comprises two connection plates (5821) arranged on the front side of the grid frame (581), two arc-shaped rods (5822) respectively arranged on the connection plates (5821) and passing through the dust cover (52), two first compression springs (5823) respectively sleeved on the parts of the arc-shaped rods (5822) passing through the dust cover (52), and two anti-detachment end caps (5824) respectively arranged on the upper ends of the arc-shaped rods (5822), the center of the circle of the arc-shaped rods (5822) being located on the rotation axis of the grid frame (581), and the elastic connection assembly (582) does not affect the insertion of the activated carbon air filter plate (585).

4. A flame retardant coating device according to claim 3, characterized in that: The connecting rod assembly (586) comprises two first connecting rods (5861) with one end hinged to the machine body (1), and two second connecting rods (5862) with one end hinged to the first connecting rods (5861) and the other end hinged to the grid frame (581). The connecting rod assembly (586) does not affect the insertion of the activated carbon air filter plate (585).

5. A flame retardant coating device according to claim 4, characterized in that: The air supply pipeline (56) comprises an air supply main pipe (561) arranged at the rear side of the machine body (1), a plurality of air supply branch pipes (562) arranged in an array on the upper surface of the air supply main pipe (561), a plurality of first hoses (563) arranged between the air supply branch pipes (562) and one end of the cooling pipe (55), a connecting pipe (564) arranged at the air outlet end of the exhaust fan (54), and a second hose (565) arranged between the connecting pipe (564) and the air supply main pipe (561); the linkage mechanism (59) comprises a rotating shaft (591) arranged at one end of the transmission roller (51) and rotatably connected to the air supply branch pipe (562) via a bearing, and an impeller (592) arranged on the rotating shaft (591) and located in the air supply branch pipe (562).

6. The flame retardant coating device according to claim 5, characterized in that: The front side of the upper surface of the plug-in frame (583) is provided with two limit shafts (5831) for lifting, the upper end of the limit shaft (5831) is provided with a pressing head (5832), the limit shaft (5831) is sleeved with a second compression spring (5833) with two ends abutting between the plug-in frame (583) and the pressing head (5832), the activated carbon air filter plate (585) is provided with a limit hole corresponding to the limit shaft (5831), and the air collecting cover (585) is provided with a pressure relief valve (5832). 7) A pressing block (571) is provided at a position corresponding to the pressing head (5832); when the dust cover (52) is in an initial state, the pressing block (571) applies force downward to the pressing head (5832) so that the lower end of the limiting shaft (5831) is embedded in the limiting hole; when the front side of the dust cover (52) is rotated upward to an extreme state, the pressing block (571) is separated from the pressing head (5832), and the lower end of the limiting shaft (5831) is disengaged from the limiting hole.

7. The flame retardant coating device according to claim 6, characterized in that: The adjustment assembly (45) comprises an adjustment screw (451) which is threadedly connected to the frame (41) and whose lower end is rotatably connected to the lifting seat (43), and an adjustment hand wheel (452) arranged on the adjustment screw (451).

8. A method for producing flame retardant decorative paper using the flame retardant coating equipment according to claim 7, characterized in that: The steps include: (S1) The substrate is unwound through an unwinding device (2); (S2) the substrate passes through a coating device (3), and the coating device (3) coats the flame retardant on the surface of the substrate; (S3) the substrate coated with the flame retardant passes through a rolling device (4), and the upper pressing roller (44) and the lower pressing roller (42) of the rolling device (4) press the flame retardant into the substrate through the extrusion effect, thereby improving the uniformity of the flame retardant after penetration on the substrate; (S4) When the substrate passes through the air drying device (5), the dust cover (52) can prevent dust from falling on the substrate, and the exhaust fan (54) inputs cooling air into the cooling pipe (55) through the air supply pipeline (56), and the multiple cooling air ports (551) of the cooling pipe (55) air dry the substrate coated with the flame retardant; (S5) The substrate is rolled up by a rolling device (6).

9. The method for producing flame retardant decorative paper using a flame retardant coating device according to claim 8, characterized in that: In step (S3), the exhaust fan (54) is connected to the top of the dust cover (52), so that the air in the dust cover (52) is filtered by the activated carbon adsorption mechanism (58) and then used for air drying, thereby purifying the odor generated during the air drying process of the flame retardant; at the same time, the linkage mechanism (59) between the air supply pipeline (56) and the plurality of conveying rollers (51) can drive the plurality of conveying rollers (51) to rotate in the same direction, so as to assist in the transportation of the substrate.

10. The method for producing flame retardant decorative paper using a flame retardant coating device according to claim 8, characterized in that: In step (S3), the air output from the dust cover (52) is purified by the activated carbon adsorption mechanism (58). When a new activated carbon air filter plate (585) needs to be replaced, the front side of the dust cover (52) is rotated upward to the limit state by driving the cylinder (53). Under the action of the connecting rod assembly (586), the opening height of the plug-in frame (583) is lower than the height of the bottom of the front side of the dust cover (52), thereby directly removing the old activated carbon air filter plate (585) and installing a new activated carbon air filter plate (585).

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