Artificial leather with flame retardant properties and preparation method and preparation device thereof

Abstract

The invention discloses an artificial leather with flame retardant performance and a preparation method and a preparation device thereof, and relates to the technical field of artificial leather. The artificial leather comprises a base fabric, which is specifically a spunlace non-woven fabric composed of ultrafine fibers; and a foaming layer, which is coated on the top surface of the base fabric, and is composed of a polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine, and is used to provide good elasticity and softness to the artificial leather. The supporting roller, the rubber box, the tension sensor, the bearing seat, the base fabric, the mounting frame, the movable roller, the DC motor, the gear three, the rack, the limit column, the limit hole, the clamping plate, the connecting block, the clamping block and the clamping groove cooperate with each other, so that the tension on the base fabric is always within a suitable threshold range during the process of coating the rubber material twice on the base fabric and drying and finalizing, so that the tension of the base fabric is kept consistent, the bonding strength between the rubber material and the base fabric is enhanced, the tension on the base fabric is adjusted, and the processing of the artificial leather is facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of artificial leather, in particular to artificial leather with flame retardancy and a preparation method and a preparation device thereof. Background Art

[0002] Artificial leather is a synthetic material that imitates the appearance, texture and performance of natural leather. It is mainly composed of a base fabric layer, a foaming layer, a flame retardant layer, a surface layer, etc. Artificial leather is as close to natural leather as possible in appearance, texture and performance, and has the characteristics of natural leather such as texture, feel and durability. It is mainly made of various synthetic resins, fibers, additives and other materials. Common substrates include polyvinyl chloride (PVC), polyurethane (PU), polyethylene (PE), etc. Compared with natural leather, artificial leather has a lower production cost and is relatively cheap, making it suitable for large-scale production. Artificial leather can adjust the material ratio and production process according to demand to produce artificial leather of different colors, textures and performances to meet diverse market needs. As a synthetic material to replace natural leather, artificial leather plays an important role in modern industrial production and daily life with its excellent performance and wide application fields.

[0003] After searching, it is found that there are problems with the artificial leather preparation equipment in the prior art. In the process of preparing artificial leather, the base fabric will be coated with rubber and the rubber will be dried and shaped. In the process of coating the rubber on the base fabric, the rubber has a certain weight, which may increase the tension on the base fabric. At the same time, the rubber on the base fabric may foam and release some gas during the drying process, which further changes the weight of the base fabric and the rubber. The change in weight also changes the tension on the base fabric. The change in tension will affect the uniformity of the coating of the rubber on the base fabric. If the tension is unstable, it may cause uneven coating thickness, and the phenomenon of local over-thickness or over-thinness will occur, affecting the quality of artificial leather. Therefore, based on the above search and combined with the prior art, an artificial leather with flame retardant properties and its preparation method and preparation device are proposed to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide an artificial leather with flame retardant properties and a preparation method and a preparation device thereof, which have the advantages of autonomous adjustment of tension, high stability, good preparation quality, etc., so as to solve the problem that the change of tension mentioned in the above background technology will affect the uniformity of coating of the rubber on the base cloth. If the tension is unstable, it may cause uneven coating thickness and local over-thickness or over-thinness.

[0005] To achieve the above object, the present invention provides the following technical solutions: As one of the technical solutions of the present invention, an artificial leather with flame retardant properties is provided, comprising a base fabric, which is specifically a spunlace non-woven fabric composed of ultrafine fibers; a foaming layer, which is coated on the top surface of the base fabric, and which is composed of a polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine, and is used to provide good elasticity and softness to the artificial leather; a flame retardant layer, which is coated on the top surface of the foaming layer, and which includes a polyurethane resin, ammonium polyphosphate, aluminum hydroxide and a plasticizer, and is used to prevent the spread of fire; a surface layer, which is coated on the top surface of the flame retardant layer, and which includes a polyurethane resin, a pigment and a leveling agent or a defoaming agent, and is used to provide the appearance effect and surface protection of the artificial leather; a waterproof soluble layer, which is coated on the bottom surface of the base fabric, and which includes a polymer emulsion, a powder, water and an additive, and is used to protect the base fabric and the coating layer.

[0006] As a second technical solution of the present invention, a device for preparing artificial leather with flame retardant performance is provided, comprising: a base plate, two fixing frames are fixedly installed on the top surface of the base plate, two clamps are fixedly installed on the top surface of the fixing frames, and the inner circular wall surfaces of the two clamps are rotatably connected with support rollers; Two glue boxes, both of which are fixedly installed on the top surface of the substrate, are used to store glue; two dryers, both of which are fixedly installed on the top surface of the substrate, are used to heat and cure the glue; a spraying robot arm, which is fixedly installed on the top surface of the substrate, is used to automatically spray waterproof coating; a coating machine, which is fixedly installed on the top surface of the substrate, is used to apply the glue required for the surface layer on the base fabric, and the coating machine is an existing technology for applying the glue on the base fabric and heating and curing it according to needs; an adjusting mechanism, which is arranged on the top surface of the substrate, is used to adjust the tension on the base fabric.

[0007] Furthermore, the adjustment mechanism includes two support frames, both of which are fixedly mounted on the top surface of the base plate, a movable plate is slidably connected to one side of the support frame, an electric push rod for supporting the movement of the movable plate is fixedly mounted on the inner bottom surface of the support frame, a plurality of mounting frames are provided on the top surface of the base plate, two tension sensors are fixedly mounted on the inner bottom surface of the mounting frame, a bearing seat is fixedly mounted on the top surface of the tension sensor, a movable roller is rotatably connected between the two bearing seats, a connecting frame is provided on one side of the mounting frame, a worm is rotatably connected to one side of the inner side of the connecting frame, a DC motor for driving the worm to rotate is installed on one side of the connecting frame, and one side of the DC motor is connected to the mounting frame One side of the frame is fixedly connected, and the inner bottom surface of the connecting frame is rotatably connected with two gear three, the top surface of the gear three is coaxially connected with a worm gear, the worm gear is meshed with the worm, and the inner bottom surface of the connecting frame is slidably connected with two racks, the gear three is meshed with the rack, one side of the rack is fixedly installed with a clamping plate, one side of the movable plate is fixedly installed with two connecting blocks, one side of the clamping plate is provided with a plurality of clamping grooves, both sides of the connecting block are fixedly installed with a plurality of clamping blocks, the inner circular wall surface of the clamping groove is movably clamped with the outer circular wall surface of the clamping block, the top surface of the base cloth is fixedly installed with a plurality of slide rails, the bottom surface of the mounting frame is slidably connected with a slide bar, and one side of the slide rail is fixedly installed with an electromagnet.

[0008] Furthermore, two stirring tanks are fixedly installed on the top surface of the base plate, and a stirring column for stirring materials is rotatably connected to the inner circular wall surface of the stirring tank, and a driving motor 2 for driving the stirring column to rotate is installed on the top surface of the stirring tank. A pump body is fixedly installed on the outer circular wall surface of the stirring tank, and a connecting pipe is fixedly installed on the inner circular wall surface of the discharge hole of the pump body, and one end of the connecting pipe passes through the rubber box and extends to the interior of the rubber box.

[0009] Furthermore, a connecting cover is fixedly installed on the bottom surface of the glue box, a roller for applying glue is rotatably connected inside the connecting cover, and a driving motor 1 for driving the roller to rotate is installed on one side of the connecting cover.

[0010] Furthermore, the rubber box is internally slidably connected with a plurality of scrapers for scraping the rubber material, and a tooth plate is fixedly installed on the top surface of the plurality of scrapers, and a connecting hole is opened on the top surface of the rubber box, and the tooth plate is slidably connected to the connecting hole, and telescopic plates are fixedly installed on both sides of the tooth plate, and a fixed plate is fixedly installed on the top surface of the rubber box, and a connecting rod is rotatably connected to one side of the fixed plate, and the top surface of the tooth plate is meshingly connected with sector teeth, and a mounting plate is fixedly installed on the top surface of the sector teeth, and the mounting plate is rotatably connected to one side of the fixed plate, and a sliding column is fixedly installed on one side of the connecting rod, and the sliding column is slidably connected to the mounting plate, and a driving motor three for driving the connecting rod to rotate is installed on one side of the fixed plate.

[0011] Furthermore, a limiting hole for supporting the sliding of the movable plate is opened on one side of the support frame, and two limiting blocks are fixedly installed on one side of the movable plate, and the limiting blocks are slidably connected to the limiting hole.

[0012] Furthermore, a gear 1 is fixedly mounted on one end of the support roller, a gear 2 is meshingly connected to the outer circumferential wall of the gear 1, and a servo motor for driving the gear 2 to rotate is mounted on one side of the interior of the fixed frame.

[0013] As a third technical solution of the present invention, a method for preparing artificial leather with flame retardant properties is provided, comprising the following steps: S1: Using a spunlace nonwoven fabric composed of ultrafine fibers as a base fabric, polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine are mixed and stirred in proportion to form a rubber compound, and a roller is used to evenly coat the rubber compound required to form a foaming layer on the top surface of the base fabric; S2: The threshold range of the tension sensor is set through the PLC controller, and the tension of the coated base fabric is adjusted by the adjustment mechanism to ensure that the tension is consistent. The base fabric coated with the foam layer is sent into the dryer for drying and shaping, so that the foam layer produces elasticity; S3: polyurethane resin, ammonium polyphosphate, aluminum hydroxide and plasticizer are mixed and stirred in proportion to form a rubber compound, and the rubber compound required to form a flame retardant layer is coated on the top surface of the base fabric after drying and shaping. The tension of the coated base fabric is also adjusted by the adjustment mechanism to keep the tension stable, and the base fabric is sent into the dryer again for drying and shaping; S4: coating a surface layer mainly composed of polyurethane resin on the top surface of the flame retardant layer by a coating machine and curing the surface, and coating a waterproof and soluble coating composed of polymer emulsion, powder, water and additives on the bottom surface of the base fabric to form a waterproof and soluble layer; S5: The processed artificial leather is rolled up by the support roller, and the servo motor controls the rotation speed of the support roller to keep the moving speed of the base fabric constant, further ensuring the consistency of the tension.

[0014] Compared with the prior art, the present invention has the following beneficial effects: The base fabric is provided, and the base fabric serves as the basic structural layer of the artificial leather to provide support and shape stability. The base fabric, the foaming layer, the flame retardant layer and the surface layer cooperate with each other, and the ammonium polyphosphate flame retardant in the foaming layer provides a basis for the flame retardant layer. The ammonium polyphosphate and aluminum hydroxide in the flame retardant layer work synergistically to form a dense carbon layer when encountering fire, which isolates oxygen and heat and effectively prevents the spread of fire. The flame retardant layer adopts an expandable flame retardant polyurethane material, which expands and foams when encountering fire to form a foam carbonized layer that is dozens or even hundreds of times thicker than the original coating, thereby producing a good heat-insulating and air-isolating effect. Compared with traditional artificial leather, the artificial leather in the present invention achieves excellent flame retardant effect through the multi-layer structure design and the application of expandable flame retardant materials, while avoiding the defects of traditional materials.

[0015] The supporting roller, the glue box, the tension sensor, the bearing seat, the base fabric, the mounting frame, the movable roller, the DC motor, the gear three, the rack, the limit column, the limit hole, the splint, the connecting block, the clamping block and the clamping groove cooperate with each other, so that the tension on the base fabric is always within the appropriate threshold range during the two times of coating the glue material on the base fabric and drying and shaping, so as to keep the tension of the base fabric consistent, enhance the bonding strength between the glue material and the base fabric, improve the adhesion of the foaming layer and the flame retardant layer on the base fabric, achieve the effect of adjusting the tension on the base fabric, and help to process artificial leather. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention; Figure 2 It is a schematic diagram of the connection structure between the support roller and the clamp of the present invention; Figure 3 It is a schematic diagram of the positions of the glue box and the dryer of the present invention; Figure 4 It is a schematic diagram of the connection structure between the support frame and the movable plate of the present invention; Figure 5 It is a schematic diagram of the connection structure of the mounting frame and the movable roller of the present invention; Figure 6 for Figure 5 A is a magnified schematic diagram of the local structure of the middle part; Figure 7 It is a bottom view schematic diagram of the connection structure of the rack and the connecting frame of the present invention; Figure 8 It is a schematic diagram of the installation structure of the stirring tank and the glue box of the present invention; Fig. 9 for Figure 8 A magnified schematic diagram of the local structure of B; Fig.10 It is an isometric schematic diagram of the base fabric structure of the present invention; Fig.11 It is a right side schematic diagram of the base fabric structure of the present invention.

[0017] In the figure: 1, base fabric; 2, foaming layer; 3, flame retardant layer; 4, surface layer; 5, substrate; 6, glue box; 7, drying machine; 8, adjustment mechanism; 9, coating machine; 10, stirring tank; 11, support roller; 12, fixing frame; 13, clamp; 14, connecting ring; 15, gear 1; 16, gear 2; 17, servo motor; 18, support frame; 19, movable plate; 20, electric push rod; 21, mounting frame; 22, movable roller; 23, limiting hole; 24, limiting block; 25, bearing seat; 26, tension sensor; 27, slide rail; 28, slide bar; 29, electromagnet; 30, connecting frame; 31, DC motor; 32. Worm; 33. Rack; 34. Clamp; 35. Worm wheel; 36. Gear three; 37. Connecting block; 38. Snap-in block; 39. Snap-in groove; 40. Limiting hole; 41. Limiting column; 42. Connecting hole; 43. Scraper; 44. Limiting rod; 45. Tooth plate; 46. Connecting cover; 47. Telescopic plate; 48. Drive motor one; 49. Roller; 50. Drive motor two; 51. Stirring column; 52. Pump body; 53. Connecting pipe; 54. Fixed plate; 55. Drive motor three; 56. Connecting rod; 57. Sliding column; 58. Mounting plate; 59. Spraying robot arm; 60. Fan-shaped teeth; 61. Waterproof layer. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In a typical implementation of this application, please refer to Figure 10-11 , an artificial leather with flame retardant properties, comprising a base fabric 1, the base fabric 1 being specifically a spunlace nonwoven fabric composed of ultrafine fibers, processed by a spunlace method, i.e., using a high-pressure fine water stream to spray onto one or more layers of a fiber web, so that the fibers are entangled with each other, thereby strengthening the fiber web; The top surface of the base fabric 1 is coated with a foaming layer 2, which is composed of 75% polyurethane prepolymer, ammonium polyphosphate, specifically accounting for 15% of the mass of the polyurethane prepolymer, water, specifically accounting for 7.5% of the mass of the polyurethane prepolymer, and triethylenediamine, specifically accounting for 0.55% of the mass of the polyurethane prepolymer; Among them, the foaming layer 2 containing polyurethane generates bubbles under the catalysis of triethylenediamine, and water is used as a foaming agent to form a porous structure, so that the leather has good resilience. The mixed ammonium polyphosphate flame retardant is evenly dispersed during the foaming process, providing a basis for the subsequent flame retardant layer 3 and enhancing the overall flame retardant performance; The top surface of the foaming layer 2 is coated with a flame retardant layer 3, which includes polyurethane resin, specifically accounting for 65% of the total mass of the flame retardant layer 3; ammonium polyphosphate, specifically accounting for 20% to 30% of the mass of the polyurethane resin, so that the flame retardant layer 3 will expand and foam when encountering fire, forming a dense carbon layer, thereby improving the flame retardant effect; Aluminum hydroxide, specifically accounting for 8% by weight of the polyurethane resin, is used to improve the thermal stability and mechanical properties of the flame retardant layer 3; Plasticizer, added in an amount of about 1% to 5% of the mass of the polyurethane resin, used to improve the processing performance and physical properties of the flame retardant layer 3; Among them, the polyurethane resin is used as a base material, and works synergistically with ammonium polyphosphate. When encountering fire, the ammonium polyphosphate decomposes to produce phosphate ester, which reacts with the hydroxyl group in the polyurethane resin to form a carbon layer, and releases gas to expand the coating; aluminum hydroxide improves the thermal stability and mechanical properties of the flame retardant layer 3, ensuring the strength and durability of the carbon layer; the plasticizer improves the processing performance and physical properties of the flame retardant layer 3, making it easier to coat and cure; The top surface of the flame retardant layer 3 is provided with a surface layer 4, which includes a polyurethane resin as a main component, accounting for 80% to 90% of the total mass of the surface layer; Pigments of different colors are added as needed, with the added amount being about 5% to 10% of the mass of the polyurethane resin, to give the epidermis the desired color; Such as leveling agent, defoamer, etc., the addition amount is about 1% to 3% of the mass of polyurethane resin, which is used to improve the coating performance and appearance quality of the surface layer; Among them, polyurethane resin is the main component, forming a tough skin layer with excellent mechanical strength and wear resistance. The added pigment gives the surface layer 4 the required color to meet the appearance requirements of different products. The leveling agent and defoaming agent improve the coating performance and appearance quality of the surface layer 4, making the coating surface smooth and uniform. The texture on the surface layer 4 will be processed by an embossing machine in the subsequent process, and the surface layer 4 can be processed according to the needs; The bottom surface of the base fabric 1 is coated with a waterproof soluble layer 61, which includes a polymer emulsion accounting for 40% to 50% of the total mass of the coating; Powder: such as cement, quartz powder, etc., accounting for 50% to 60% of the total mass of the coating; Water: used to adjust the viscosity and fluidity of the coating, the added amount is about 20% to 30% of the total mass of liquid and powder; Additives: such as thickeners, dispersants, etc., the addition amount is about 1% to 2% of the total mass of the coating, used to improve the stability and construction performance of the coating; The polymer emulsion is combined with powder such as cement and quartz powder to form a dense waterproof coating, which prevents the flame retardant in the foaming layer 2 from dissolving in water during the cleaning process, so that the overall flame retardant performance can be maintained for a longer time; With the above features, the base fabric 1 is provided, and the base fabric 1 serves as the basic structural layer of the artificial leather, providing support and shape stability, while giving the product certain air permeability and hygroscopicity. The spunlace nonwoven fabric composed of ultrafine fibers has good mechanical properties and flexibility, and can withstand the weight and external force of the subsequent coating layer, and maintain the overall structure of the artificial leather; The foaming layer 2 gives the artificial leather good elasticity and softness, and also plays a certain role in heat insulation and buffering; the flame retardant layer 3 expands and foams when encountering fire to form a dense carbon layer, isolating oxygen and heat, and effectively preventing the spread of fire, while the waterproof layer 61 prevents the flame retardant in the foaming layer 2 from dissolving in water during the cleaning process; In summary, the ammonium polyphosphate flame retardant in the foaming layer 2 provides a basis for the flame retardant layer 3. The ammonium polyphosphate and aluminum hydroxide in the flame retardant layer 3 work together to form a dense carbon layer when encountering fire, isolating oxygen and heat, and effectively preventing the spread of fire. The flame retardant layer 3 uses an expandable flame retardant polyurethane material, which expands and foams when encountering fire to form a foam carbonized layer that is dozens or even hundreds of times thicker than the original coating, producing a good heat insulation and air isolation effect. Compared with traditional artificial leather, such as PVC leather and PU leather, the artificial leather proposed in the present invention has better flame retardant performance. Although PVC leather has good flame retardant performance, its main resin contains a large amount of halogen flame retardant groups, which may have a certain impact on the environment and human health, while the flame retardant performance of PU leather is relatively poor; however, the artificial leather in the present invention achieves excellent flame retardant effect through multi-layer structure design and the application of expandable flame retardant materials, while avoiding the defects of traditional materials.

[0020] As a preferred implementation in this embodiment, please refer to Figures 1 to 9 A preparation device for artificial leather with flame retardant performance, comprising a base plate 5, two fixing frames 12 are fixedly installed on the top surface of the base plate 5, two clamps 13 are fixedly installed on the top surface of the fixing frames 12, the inner circular wall surfaces of the two clamps 13 are rotatably connected with support rollers 11, a base fabric 1 is wound around the outer circular wall surface of the right support roller 11, the right support roller 11 is used for winding the base fabric 1, and the left support roller 11 is used for winding the processed artificial leather; The outer circumferential wall surface of the support roller 11 is fixedly sleeved with a connecting ring 14, and the inner circumferential wall surface of the clamp 13 is provided with an annular groove for cooperating with the connecting ring 14. The annular groove cooperates with the connecting ring 14 to support the rotation of the clamp 13; Obviously, the support roller 11 can be taken out from the clamp 13 by removing the bolts on the clamp 13, so as to facilitate the placement of the base fabric 1 and the removal of the processed artificial leather; Two glue boxes 6 are fixedly mounted on the top surface of the base plate 5 for storing glue, two dryers 7 are fixedly mounted on the top surface of the base plate 5 for heating and curing the glue, a spraying robot arm 59 is fixedly mounted on the top surface of the base plate 5 for automatically spraying waterproof coating, a coating machine 9 is fixedly mounted on the top surface of the base plate 5 for coating the glue required for the surface layer 4 on the base fabric 1, the coating machine 9 is a prior art for coating the glue on the base fabric 1 and heating and curing it according to the requirements, and an adjustment mechanism 8 is arranged on the top surface of the base plate 5 for adjusting the tension on the base fabric 1; The adjustment mechanism 8 includes two support frames 18, both of which are fixedly mounted on the top surface of the base plate 5, and the two support frames 18 are staggered. A movable plate 19 is slidably connected to one side of the support frame 18, and an electric push rod 20 for supporting the movement of the movable plate 19 is fixedly mounted on the inner bottom surface of the support frame 18. The top surface of the telescopic shaft of the electric push rod 20 is fixedly connected to the bottom surface of the movable plate 19. A plurality of mounting frames 21 are arranged on the top surface of the base plate 5, and two tension sensors 26 are fixedly mounted on the inner bottom surface of the mounting frame 21. A bearing seat 25 is fixedly mounted on the top surface of the tension sensor 26, and a movable roller 22 is rotatably connected between the two bearing seats 25 through a bearing. There are four movable rollers 22, and every two movable rollers 22 and movable plates 19 form a group. One group of movable rollers 22 and movable plates 19 matches two glue boxes 6, that is, the tension of the coated base fabric 1 is adjusted. Another group of movable rollers 22 and movable plates 19 corresponds to two dryers 7, that is, the tension of the dried base fabric 1 is adjusted, so that the tension on the base fabric 1 is always consistent or similar during the process of being processed into artificial leather. A connecting frame 30 is provided on one side of the mounting frame 21, and a worm 32 is rotatably connected to one side of the connecting frame 30. A DC motor 31 for driving the worm 32 to rotate is installed on one side of the connecting frame 30. One side of the DC motor 31 is fixedly connected to one side of the mounting frame 21. The driving shaft of the DC motor 31 passes through the mounting frame 21 and is fixedly connected to one end of the worm 32. The inner bottom surface of the connecting frame 30 is rotatably connected to two gears 36 through bearings, and the top surface of the gear 36 is coaxially connected to a worm wheel 35 through a rotating shaft, and the worm wheel 35 is meshed with the worm 32. The inner bottom surface of the connecting frame 30 is slidably connected to two racks 33, and the gear 36 is meshed with the rack 33. A clamping plate 34 is fixedly installed on one side of the rack 33, and two connecting blocks 37 are fixedly installed on one side of the movable plate 19. A plurality of clamping grooves 39 are opened on one side of the clamping plate 34, and a plurality of clamping blocks 38 are fixedly installed on both sides of the connecting block 37. The inner circular wall surface of the clamping groove 39 is movably clamped with the outer circular wall surface of the clamping block 38; A plurality of slide rails 27 are fixedly mounted on the top surface of the base fabric 1, and a slide bar 28 is slidably connected to the bottom surface of the mounting frame 21. The slide bar 28 is an iron T-shaped structure. An electromagnet 29 is fixedly mounted on one side of the slide rail 27. The electromagnet 29 can restrict the slide bar 28 by magnetic adsorption. A PLC controller is fixedly mounted on one side of the substrate 5, and the electric push rod 20, the tension sensor 26, the electromagnet 29 and the DC motor 31 are all electrically connected to the PLC controller; Among them, a threshold range is set for multiple tension sensors 26 through a PLC controller, and the rubber in the first rubber box 6 from left to right on the substrate 5 will first be coated on the base fabric 1. At this time, the base fabric 1 and the rubber pass through the movable roller 22, and the tension sensor 26 under the movable roller 22 can measure the tension on the base fabric 1. If the tension is not within the threshold range, the DC motor 31 drives the worm 32 to rotate, and the rotation of the worm 32 drives the worm wheel 35 and the gear 36 to rotate, and the rotation of the gear 36 drives the rack 33 to move, and the rack 33 moves to drive the clamping plate 34 to move and engage with the clamping block 38 on the connecting block 37. At the same time, the electromagnet 29 corresponding to the movable roller 22 is powered off, and the electric push rod 20 drives the movable plate 19 and the movable roller 22 to move upward or downward until the value detected by the tension sensor 26 is the same as the threshold. In addition, the base fabric 1 after the first coating will enter the drying machine 7 for drying to shape the rubber thereon. During the drying process, the moisture content of the rubber is reduced and bubbles are generated, so that the tension on the base fabric 1 changes again. If the tension is within the threshold range, the movable roller 22 does not move, that is, the tension on the base fabric 1 is not adjusted. Otherwise, it is adjusted according to the above steps. The second coating of the rubber on the base fabric 1 and drying are also the same, so as to ensure that the tension of the base fabric 1 is consistent during the coating of the rubber, thereby improving the quality of the subsequent artificial leather. The inner bottom surface of the connecting frame 30 is provided with two limiting holes 40 for supporting the sliding of the rack 33. The bottom surface of the rack 33 is fixedly installed with a limiting column 41. The limiting column 41 is slidably connected with the limiting hole 40. The limiting hole 40 and the limiting column 41 cooperate to limit the movement of the rack 33. With the above technical features, the base fabric 1 on the left side support roller 11 first enters the bottom of the first glue box 6 through the support roller 11, and the rubber material constituting the flame retardant layer 3 inside the glue box 6 is coated on the top surface of the base fabric 1. The rubber material is a mixture of polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine. The tension threshold range is set for the multiple tension sensors 26 through the PLC controller. The range size is related to the concentration of the rubber material and the moving speed of the base fabric 1, and needs to be set comprehensively. After the rubber material constituting the foaming layer 2 is coated on the surface of the base fabric 1, the tension on the base fabric 1 changes. When the base fabric 1 coated with the adhesive contacts the movable roller 22 inside the mounting frame 21, the tension sensor 26 below the movable roller 22 can measure the tension on the base fabric 1. At this time, if the tension is greater than or less than the threshold value, the PLC controller starts the DC motor 31. The driving shaft of the DC motor 31 rotates to drive the worm 32 to rotate. The rotation of the worm 32 drives the worm wheel 35 to rotate. The rotation of the worm wheel 35 drives the gear three 36 to rotate. The rotation of the gear three 36 causes the rack 33 to move inward. The inward movement of the rack 33 drives the limit column 41 to move inside the upper limit hole 40 of the connecting frame 30. The limit hole 40 and the limit column 41 can limit the movement of the rack 33. The inward movement of the rack 33 drives the clamping plate 34 to move inward. The inward movement of the two clamping plates 34 will clamp the connecting block 37 and make the clamping block 38 enter the inside of the clamping groove 39. At this time, the movable roller 22 and the mounting frame 21 on the left side of the first glue box 6 are connected with the movable plate 19. At this time, the tension force detected by the tension sensor 26 corresponding to the movable roller 22 is greater than the threshold range, and the electromagnet 29 is powered off to cancel the adsorption of the slide bar 28 under the set of mounting frames 21 and the movable roller 22. Subsequently, the telescopic shaft of the electric push rod 20 moves downward to drive the movable plate 19 to move downward, and the movable plate 19 moves downward to drive the mounting frame 21 and the movable roller 22 to move downward, thereby reducing the tension on the base fabric 1 so that it is within the threshold range. At the same time, another set of mounting frames 21 and movable rollers 22 on the support frame 18 maintain a fixed position; After adjustment, when the tension force detected by the tension sensor 26 on the movable roller 22 is within the threshold range, the connecting frame 30 drives the worm 32, and the worm 32 resets the rack 33 and the clamping plate 34 through the worm wheel 35 and the gear 3 36. At the same time, the electromagnet 29 below it adsorbs the slide bar 28 again, thereby positioning the mounting frame 21 and the movable roller 22. If the tension detected by the tension sensor 26 corresponding to the active roller 22 is less than the threshold value, the mounting frame 21 and the active roller 22 will move upward to increase the tension on the base fabric 1. After adjustment, when the tension detected by the tension sensor 26 on the active roller 22 is within the threshold value, the rack 33 and the clamping plate 34 are reset. The stable tension helps to maintain the flatness of the base fabric 1, so that the rubber can be coated on the surface of the base fabric 1 continuously and evenly, avoiding the phenomenon of coating interruption or discontinuity; In addition, after the rubber material required for the foaming layer 2 is coated on the surface of the base fabric 1, the base fabric 1 together with the rubber material will enter the first dryer 7 for drying and shaping. The drying also makes the rubber material required for the foaming layer 2 elastic. After drying and shaping, the base fabric 1 together with the rubber material will contact the movable roller 22 on the left side of the first dryer 7. The tension sensor 26 under the movable roller 22 can measure the tension on the base fabric 1. If the tension is within the threshold range, the mounting frame 21 and the movable roller 22 will not be adjusted. If the tension is not within the threshold range, the electric push rod 20 will drive the corresponding mounting frame 21 and the movable roller 22 to move upward or downward to adjust the tension on the base fabric 1. Next, the base fabric 1 which has been coated with adhesive and dried for the first time will be moved to the next set of adhesive boxes 6 and dryers 7 for re-coating with adhesive and drying for setting. At this time, the other two sets of mounting frames 21 and movable rollers 22 can also independently adjust the tension on the base fabric 1, so that the tension on the base fabric 1 during the process of coating adhesive and drying is always consistent or similar. In summary, the base fabric 1 is coated with rubber and dried and shaped twice, but the tension on the base fabric 1 is always within a suitable threshold range during this process. Keeping the tension of the base fabric 1 consistent can make the rubber constituting the foaming layer 2 and the flame retardant layer 3 better contact with the surface of the base fabric 1, enhance the bonding strength between the rubber and the base fabric 1, and improve the adhesion of the foaming layer 2 and the flame retardant layer 3 on the base fabric 1, so as to achieve the effect of adjusting the tension on the base fabric 1, which is helpful for processing artificial leather; Two stirring tanks 10 are fixedly installed on the top surface of the base plate 5. A stirring column 51 for stirring materials is rotatably connected to the inner wall surface of the stirring tank 10. A driving motor 2 50 for driving the stirring column 51 to rotate is installed on the top surface of the stirring tank 10. The driving shaft of the driving motor 2 50 passes through the top surface of the stirring tank 10 and is fixedly connected to the top surface of the stirring column 51. A pump body 52 is fixedly installed on the outer wall surface of the stirring tank 10. A connecting pipe 53 is fixedly installed on the inner wall surface of the discharge hole of the pump body 52. ​​One end of the connecting pipe 53 passes through the rubber box 6 and extends to the inside of the rubber box 6. The driving motor 2 50 and the pump body 52 are both electrically connected to the PLC controller. The second driving motor 50 drives the stirring column 51 to rotate and stir the material in the stirring tank 10, and the pump body 52 starts to transport the stirred rubber in the stirring tank 10 to the inside of the rubber box 6 through the connecting pipe 53, so as to facilitate the subsequent coating of the rubber; Specifically, through the stirring tank 10, in the process of making the rubber material, the staff will pour the polyurethane prepolymer, ammonium polyphosphate, water and triethylene diamine into the first stirring tank 10 from left to right, and at the same time, the staff will pour the polyurethane resin, ammonium polyphosphate, aluminum hydroxide and plasticizer into the second stirring tank 10, and the driving shaft of the driving motor 2 50 rotates to drive the stirring column 51 to rotate, and the stirring column 51 rotates to stir and mix the materials inside the base fabric 1; Then, the pump body 52 is started to transport the mixed rubber in the mixing tank 10 to the inside of the rubber box 6 through the connecting pipe 53, so that the two rubbers coated on the base fabric 1 are stored in the inside of the two rubber boxes 6 respectively, which is convenient for the subsequent coating of the rubber on the base fabric 1; A connecting cover 46 is fixedly installed on the bottom surface of the glue box 6. The glue box 6 is a hollow trapezoidal structure with an open bottom surface. The connecting cover 46 is connected to the glue box 6. A roller 49 for applying glue is rotatably connected inside the connecting cover 46. A driving motor 48 for driving the roller 49 to rotate is installed on one side of the connecting cover 46. One end of the driving shaft of the driving motor 48 passes through the connecting cover 46 and is fixedly connected to one end of the connecting cover 46. The other end of the roller 49 is rotatably connected to one side of the connecting cover 46 through a bearing. The rubber inside the rubber box 6 will adhere to the outer wall of the roller 49, and the driving motor 48 drives the roller 49 to rotate. When the base fabric 1 passes under the roller 49, the roller 49 rotates to coat the rubber on the surface of the base fabric 1. Specifically, through the setting of the glue box 6, the glue inside the glue box 6 will fall on the surface of the roller 49, and the driving shaft of the driving motor 48 rotates to drive the roller 49 to rotate inside the connecting cover 46. When the base fabric 1 moves under the roller 49, the roller 49 rotates continuously to coat the glue inside the glue box 6 on the surface of the base fabric 1, thereby achieving a coating effect on the base fabric 1; The inside of the rubber box 6 is slidably connected with a plurality of scrapers 43 for scraping the rubber material, and a tooth plate 45 is fixedly installed on the top surface of the plurality of scrapers 43. A connecting hole 42 is opened on the top surface of the rubber box 6, and the tooth plate 45 is slidably connected with the connecting hole 42. A telescopic plate 47 is fixedly installed on both sides of the tooth plate 45, and one side of the telescopic plate 47 is fixedly connected with one side of the inside of the connecting hole 42. The telescopic plate 47 is a pleated rubber cover plate, and the telescopic plate 47 can seal the gap between the tooth plate 45 and the connecting hole 42 and can be telescopic without affecting the movement of the tooth plate 45. A fixing plate 54 is fixedly installed on the top surface of the glue box 6, and a connecting rod 56 is rotatably connected to one side of the fixing plate 54. A fan-shaped tooth 60 is meshed and connected to the top surface of the tooth plate 45. A mounting plate 58 is fixedly installed on the top surface of the fan-shaped tooth 60. The mounting plate 58 is rotatably connected to one side of the fixing plate 54 through a rotating shaft. A sliding column 57 is fixedly installed on one side of the connecting rod 56. The sliding column 57 is slidably connected to the mounting plate 58. A through hole for supporting the sliding column 57 to slide is provided on one side of the mounting plate 58. The sliding column 57 slides in the through hole. A driving motor 3 55 for driving the connecting rod 56 to rotate is installed on one side of the fixing plate 54. One end of the driving shaft of the driving motor 3 55 passes through the fixing plate 54 and is fixedly connected to the other side of the connecting rod 56. A limiting rod 44 is fixedly installed inside the glue box 6. Several scrapers 43 are slidably connected to the limiting rod 44. The limiting rod 44 can limit the movement of the scraper 43. The driving motor 3 55 is electrically connected to the PLC controller. The driving motor 3 55 drives the connecting rod 56 to rotate, and the connecting rod 56 rotates to drive the mounting plate 58 to swing left and right through the sliding column 57. The mounting plate 58 swings left and right, and the cooperation between the sector teeth 60 and the tooth plate 45 makes the multiple scrapers 43 move back and forth inside the rubber box 6, stirring the rubber inside the rubber box 6 to prevent the rubber from settling. Specifically, by setting the driving motor 3 55, the driving shaft of the driving motor 3 55 rotates to drive the connecting rod 56 to rotate, the connecting rod 56 rotates to make the sliding column 57 slide in the through hole on the mounting plate 58, the sliding column 57 slides in the through hole on the mounting plate 58 to make the mounting plate 58 swing left and right around the rotating shaft, the mounting plate 58 swings left and right to drive the fan-shaped teeth 60 to swing left and right, the fan-shaped teeth 60 swings left and right to drive the tooth plate 45 to move back and forth, the tooth plate 45 moves back and forth to drive the multiple scrapers 43 to move back and forth inside the glue box 6, the multiple scrapers 43 move back and forth to stir the rubber inside the glue box 6, prevent the rubber inside the glue box 6 from settling, improve the uniformity of the rubber, and achieve a better coating effect; A limiting hole 23 for supporting the sliding of the movable plate 19 is provided on one side of the support frame 18. Two limiting blocks 24 are fixedly installed on one side of the movable plate 19. The limiting blocks 24 are slidably connected to the limiting holes 23. The movement of the movable plate 19 can be limited by the cooperation between the limiting holes 23 and the limiting blocks 24. Specifically, by setting the movable plate 19, the movement of the movable plate 19 will drive the limiting block 24 to move inside the limiting hole 23 on the support frame 18, and the limiting hole 23 and the clamping plate 34 can cooperate to support the movement of the movable plate 19 and limit the movement of the movable plate 19, thereby achieving the limiting effect of the movable plate 19; One end of the support roller 11 is fixedly mounted with a gear 15, the outer circumferential wall of the gear 15 is meshedly connected with a gear 2 16, a servo motor 17 for driving the gear 2 16 to rotate is mounted on one side of the inner side of the fixed frame 12, one end of the driving shaft of the servo motor 17 penetrates the fixed frame 12 and is fixedly connected to one side of the gear 2 16, and the servo motor 17 is electrically connected to the PLC controller; The servo motor 17 drives the gear 2 16 to rotate, the gear 2 16 rotates to drive the gear 1 15, the gear 1 15 rotates to drive the support roller 11 to rotate, one support roller 11 rotates to release the base fabric 1 and the other support roller 11 rotates to reel up the processed artificial leather; Specifically, through the setting of the fixed frame 12, the servo motor 17 on the left fixed frame 12 is started, the driving shaft of the servo motor 17 rotates to drive the gear 2 16 to rotate, the gear 2 16 rotates to drive the gear 1 15 to rotate, the gear 1 15 rotates to drive the support roller 11 to rotate, the support roller 11 rotates to release the base fabric 1 on the left support roller 11, and at the same time, the support roller 11 on the right fixed frame 12 also rotates with the cooperation of another group of gears 1 15, gear 2 16 and servo motor 17. The two servo motors 17 maintain the same speed under the control of the PLC controller, so that the moving speed of the base fabric 1 remains constant, further ensuring that the tension on the base fabric 1 is consistent.

[0021] Working principle: through the servo motor 17, the servo motor 17 drives the gear 2 16 to rotate, the gear 2 16 rotates to drive the gear 1 15, the gear 1 15 rotates to drive the support roller 11 to rotate, one support roller 11 rotates to release the base fabric 1, and the other support roller 11 rotates to reel the processed artificial leather; Secondly, the second driving motor 50 drives the stirring column 51 to rotate and stir the material in the stirring tank 10, and the pump body 52 starts to transport the stirred rubber in the stirring tank 10 to the inside of the rubber box 6 through the connecting pipe 53, so as to facilitate the subsequent coating of the rubber; Next, the driving motor 3 55 drives the connecting rod 56 to rotate, and the connecting rod 56 rotates to drive the mounting plate 58 to swing left and right through the sliding column 57. The mounting plate 58 swings left and right, and the cooperation between the sector teeth 60 and the tooth plate 45 makes the multiple scrapers 43 move back and forth inside the rubber box 6, stirring the rubber inside the rubber box 6 to prevent the rubber from settling. Subsequently, the rubber inside the rubber box 6 will adhere to the outer wall of the roller 49, and the driving motor 48 will drive the roller 49 to rotate. When the base fabric 1 passes under the roller 49, the roller 49 rotates to coat the rubber on the surface of the base fabric 1. At the same time, a threshold range is set for multiple tension sensors 26 through the PLC controller. The rubber in the first rubber box 6 from left to right on the substrate 5 will be coated on the base fabric 1 first. At this time, the base fabric 1 and the rubber pass through the movable roller 22. The tension sensor 26 under the movable roller 22 can measure the tension on the base fabric 1. If the tension is not within the threshold range, the DC motor 31 drives the worm 32 to rotate, and the rotation of the worm 32 drives the worm wheel 35 and the gear 36 to rotate. The gear 36 drives the rack 33 to move, and the rack 33 moves to drive the clamping plate 34 to move and engage with the clamping block 38 on the connecting block 37. At the same time, the electromagnet 29 corresponding to the movable roller 22 is powered off, and the electric push rod 20 drives the movable plate 19 and the movable roller 22 to move upward or downward until the value detected by the tension sensor 26 is the same as the threshold. In addition, after the first coating, the base fabric 1 will enter the interior of the dryer 7 for drying to shape the rubber thereon. During the drying process, the moisture content of the rubber is reduced and bubbles are generated, causing the tension on the base fabric 1 to change again. If the tension is within the threshold range, the movable roller 22 will not move, that is, the tension on the base fabric 1 will not be adjusted. Otherwise, it will be adjusted according to the above steps. The same is true for the second coating of the rubber on the base fabric 1 and drying, ensuring that the tension of the base fabric 1 is consistent during the coating process, thereby improving the quality of subsequent artificial leather.

[0022] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An artificial leather with flame retardant properties, characterized in that: include: A base fabric (1), wherein the base fabric (1) is specifically a spunlace non-woven fabric composed of ultrafine fibers; A foaming layer (2), the foaming layer (2) being coated on the top surface of the base fabric (1), the foaming layer (2) being composed of a polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine, and being used to provide the artificial leather with good elasticity and softness; A flame retardant layer (3), the flame retardant layer (3) being coated on the top surface of the foaming layer (2), the flame retardant layer (3) comprising polyurethane resin, ammonium polyphosphate, aluminum hydroxide and a plasticizer, and being used to prevent the spread of fire; A surface layer (4), the surface layer (4) being coated on the top surface of the flame retardant layer (3), the surface layer (4) comprising a polyurethane resin, a pigment and a leveling agent or a defoaming agent, and being used to provide an appearance effect and surface protection for the artificial leather; A waterproof soluble layer (61), the waterproof soluble layer (61) is coated on the bottom surface of the base fabric (1), the waterproof soluble layer (61) comprises a polymer emulsion, powder, water and an auxiliary agent, and is used to protect the base fabric (1) and the coating layer.

2. A device for preparing artificial leather with flame retardant properties, used for the artificial leather with flame retardant properties as claimed in claim 1, characterized in that: include: A base plate (5), wherein two fixing frames (12) are fixedly mounted on the top surface of the base plate (5), two clamps (13) are fixedly mounted on the top surface of the fixing frames (12), and the inner circular wall surfaces of the two clamps (13) are rotatably connected to support rollers (11); Two glue boxes (6), both of which are fixedly mounted on the top surface of the base plate (5) and are used to store glue; Two drying machines (7), both of which are fixedly mounted on the top surface of the substrate (5) and are used to heat and cure the adhesive; A spraying mechanical arm (59), the spraying mechanical arm (59) being fixedly mounted on the top surface of the substrate (5) and being used for automatically spraying a waterproof coating; A coating machine (9), the coating machine (9) being fixedly mounted on the top surface of the substrate (5) and being used to coat the rubber material required for the surface layer (4) onto the base fabric (1); An adjusting mechanism (8), wherein the adjusting mechanism (8) is arranged on the top surface of the base plate (5) and is used to adjust the tension on the base fabric (1).

3. The device for preparing artificial leather with flame retardancy according to claim 2, characterized in that: The adjustment mechanism (8) comprises two support frames (18), both of which are fixedly mounted on the top surface of the base plate (5), one side of the support frame (18) is slidably connected to a movable plate (19), an electric push rod (20) for supporting the movement of the movable plate (19) is fixedly mounted on the inner bottom surface of the support frame (18), a plurality of mounting frames (21) are provided on the top surface of the base plate (5), two tension sensors (26) are fixedly mounted on the inner bottom surface of the mounting frame (21), a bearing seat (25) is fixedly mounted on the top surface of the tension sensor (26), a movable roller (22) is rotatably connected between the two bearing seats (25), a connecting frame (30) is provided on one side of the mounting frame (21), a worm (32) is rotatably connected to the inner side of the connecting frame (30), a DC motor (31) for driving the worm (32) to rotate is mounted on one side of the connecting frame (30), one side of the DC motor (31) is rotatably connected to one side of the mounting frame (21), The connecting frame (30) is fixedly connected to the side, the inner bottom surface of the connecting frame (30) is rotatably connected to two gear threes (36), the top surface of the gear three (36) is coaxially connected to a worm wheel (35), the worm wheel (35) is meshingly connected to the worm (32), the inner bottom surface of the connecting frame (30) is slidably connected to two racks (33), the gear three (36) is meshingly connected to the rack (33), one side of the rack (33) is fixedly installed with a clamping plate (34), and one side of the movable plate (19) is fixedly installed with Two connecting blocks (37), one side of the clamping plate (34) is provided with a plurality of clamping grooves (39), both sides of the connecting block (37) are fixedly mounted with a plurality of clamping blocks (38), the inner circular wall surface of the clamping groove (39) is movably clamped with the outer circular wall surface of the clamping block (38), the top surface of the base cloth (1) is fixedly mounted with a plurality of slide rails (27), the bottom surface of the mounting frame (21) is slidably connected with a slide bar (28), and one side of the slide rail (27) is fixedly mounted with an electromagnet (29).

4. The device for preparing artificial leather with flame retardancy according to claim 2, characterized in that: Two stirring tanks (10) are fixedly mounted on the top surface of the base plate (5); a stirring column (51) for stirring materials is rotatably connected to the inner circumferential wall surface of the stirring tank (10); a second driving motor (50) for driving the stirring column (51) to rotate is mounted on the top surface of the stirring tank (10); a pump body (52) is fixedly mounted on the outer circumferential wall surface of the stirring tank (10); a connecting pipe (53) is fixedly mounted on the inner circumferential wall surface of the discharge hole of the pump body (52); one end of the connecting pipe (53) passes through the rubber box (6) and extends into the interior of the rubber box (6).

5. The device for preparing artificial leather with flame retardancy according to claim 3, characterized in that: A connecting cover (46) is fixedly mounted on the bottom surface of the rubber box (6), a roller (49) for applying rubber is rotatably connected inside the connecting cover (46), and a driving motor (48) for driving the roller (49) to rotate is mounted on one side of the connecting cover (46).

6. The device for preparing artificial leather with flame retardancy according to claim 5, characterized in that: The rubber box (6) is slidably connected to a plurality of scrapers (43) for scraping rubber materials. A tooth plate (45) is fixedly mounted on the top surface of the plurality of scrapers (43). A connecting hole (42) is provided on the top surface of the rubber box (6). The tooth plate (45) is slidably connected to the connecting hole (42). Telescopic plates (47) are fixedly mounted on both sides of the tooth plate (45). A fixed plate (54) is fixedly mounted on the top surface of the rubber box (6). A connecting rod is rotatably connected to one side of the fixed plate (54). (56), the top surface of the tooth plate (45) is meshingly connected with a sector tooth (60), the top surface of the sector tooth (60) is fixedly mounted with a mounting plate (58), the mounting plate (58) is rotatably connected to one side of the fixed plate (54), a sliding column (57) is fixedly mounted on one side of the connecting rod (56), the sliding column (57) is slidably connected to the mounting plate (58), and a driving motor (55) for driving the connecting rod (56) to rotate is mounted on one side of the fixed plate (54).

7. The device for preparing artificial leather with flame retardancy according to claim 3, characterized in that: A limiting hole (23) for supporting the sliding of the movable plate (19) is provided on one side of the support frame (18), and two limiting blocks (24) are fixedly mounted on one side of the movable plate (19), wherein the limiting blocks (24) are slidably connected to the limiting hole (23).

8. The device for preparing artificial leather with flame retardancy according to claim 2, characterized in that: One end of the support roller (11) is fixedly mounted with a gear 1 (15), the outer circumferential wall surface of the gear 1 (15) is meshingly connected with a gear 2 (16), and one side of the interior of the fixed frame (12) is mounted with a servo motor (17) for driving the gear 2 (16) to rotate.

9. A method for preparing artificial leather with flame retardant properties, used in the device for preparing artificial leather with flame retardant properties as claimed in any one of claims 2 to 8, characterized in that: The steps include: S1: using a spunlace nonwoven fabric composed of ultrafine fibers as a base fabric (1), mixing polyurethane prepolymer, ammonium polyphosphate, water and triethylenediamine in proportion and stirring them evenly to form a rubber compound, and using a roller (49) to evenly coat the rubber compound required to form a foaming layer (2) on the top surface of the base fabric (1); S2: setting the threshold range of the tension sensor (26) through the PLC controller, adjusting the tension of the coated base fabric (1) using the adjustment mechanism (8) to ensure that the tension is consistent, and sending the base fabric (1) coated with the foam layer (2) into the drying machine (7) for drying and shaping, so that the foam layer (2) produces elasticity; S3: polyurethane resin, ammonium polyphosphate, aluminum hydroxide and plasticizer are mixed and stirred in proportion to form a rubber compound, and the rubber compound required to form a flame retardant layer (3) is coated on the top surface of the base fabric (1) after drying and shaping. The tension of the coated base fabric (1) is adjusted by the adjustment mechanism (8) to keep the tension stable, and the base fabric (1) is again sent into the drying machine (7) for drying and shaping; S4: coating the top surface of the flame retardant layer (3) with a surface layer (4) mainly composed of polyurethane resin by a coating machine (9) and curing the surface layer, and coating the bottom surface of the base fabric (1) with a waterproof and soluble coating composed of polymer emulsion, powder, water and additives to form a waterproof and soluble layer (61); S5: The processed artificial leather is rolled up by the support roller (11), and the servo motor (17) controls the rotation speed of the support roller (11) to keep the moving speed of the base fabric (1) constant, thereby further ensuring a consistent tensioning force.

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