Scratch-resistant and UV-resistant sheet, preparation method and processing equipment

Abstract

The invention discloses a scratch-resistant and UV-proof sheet, a preparation method and processing equipment, and relates to the technical field of sheet processing. The scratch-resistant and UV-proof sheet is formed by mixing polycarbonate, acrylate-styrene-acrylonitrile copolymer and additives. The preparation method comprises the following steps: S1, pretreatment; S2, mixing; S3, melt extrusion; S4, surface coating treatment; S5, solidification and cooling; S6, cutting and post-processing. The processing equipment comprises a mixing device. In the invention, the mixing device can control the stirring speed of a stirring frame to ensure that in the initial stage of stirring the raw materials, when the viscosity of the raw materials is relatively large, the stirring speed is relatively slow. As the temperature of the raw materials increases, the viscosity decreases, and the stirring speed gradually increases. A heating component is provided to meet the special temperature requirements of different raw materials by gradually adjusting the heating temperature, thereby better exerting the performance of the raw materials, the raw materials can be mixed more evenly, and the overall quality of the product is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of sheet material processing, in particular to a scratch-resistant and UV-proof sheet material, a preparation method and processing equipment. Background Art

[0002] Scratch-resistant UV-resistant sheet is a high-performance, multifunctional composite material with excellent scratch resistance and UV protection. It utilizes advanced materials science and technology and sophisticated manufacturing processes. Through the mixing, processing, and surface treatment of specific raw materials, it achieves high strength, high transparency, high weather resistance, and long-lasting UV protection. This material is widely used in construction, automotive, eye protection lenses, and other fields, providing users with long-lasting and reliable protection.

[0003] The processing of scratch-resistant, UV-resistant sheeting requires the mixing of multiple raw materials. Temperature is a crucial process parameter during this mixing process, as some raw materials may require specific temperatures for optimal mixing or require heating to promote chemical reactions. Furthermore, temperature control can influence the rheological properties of the raw materials, such as reducing viscosity and enhancing fluidity, thereby improving mixing performance.

[0004] Therefore, the existing stirring method is usually to place the raw materials in a stirring barrel and use a stirring rack to stir the raw materials. During the stirring process, a constant stirring speed and a fixed temperature are often used. Although this method can also stir the raw materials;

[0005] However, since a variety of raw materials often need to be added during the stirring process, and different raw materials usually have their own optimal reaction temperatures due to their differences in chemical properties, if a constant temperature is used for stirring, it may not be possible to meet the optimal reaction conditions of all raw materials at the same time, thereby affecting the chemical reaction efficiency between the raw materials and the quality of the products, resulting in the risk of raw material decomposition or generation of by-products. Secondly, the constant temperature and stirring speed in the stirring barrel during the stirring process may also cause uneven mixing of the raw materials. For example, in the early stage of stirring, since some additives often need to be added, the raw materials may be in a high viscosity state. At this time, a slower stirring speed is required to avoid splashing and waste of raw materials. However, as the stirring proceeds, the temperature of the raw materials gradually increases, the viscosity decreases, and the fluidity increases. At this time, if the stirring speed remains unchanged, some raw materials may not be fully mixed, affecting the performance of the product. Summary of the Invention

[0006] The object of the present invention is to provide a scratch-resistant and UV-resistant sheet, a preparation method and a processing equipment to solve the problems raised in the above background technology.

[0007] To solve the above technical problems, the present invention provides a scratch-resistant and UV-proof sheet, which is made by mixing polycarbonate, acrylate-styrene-acrylonitrile copolymer and additives, wherein the additives include silicone compounds, hard fillers and UV absorbers.

[0008] A method for preparing a scratch-resistant and UV-resistant sheet comprises the following steps:

[0009] S1. Pretreatment: Polycarbonate, acrylate-styrene-acrylonitrile copolymer, and additives having UV resistance and enhanced scratch resistance are selected and transported to a cleaning device through a conveying device to clean the raw materials respectively, and then the cleaned raw materials are dried in a drying device;

[0010] S2. Mixing: polycarbonate, acrylate-styrene-acrylonitrile copolymer, and additives having UV resistance and enhanced scratch resistance are mixed in a certain proportion using a mixing device;

[0011] S3, melt extrusion: the mixed raw materials are transported to a melt extrusion device, heated to a molten state, and extruded into a continuous sheet shape;

[0012] S4. Surface coating treatment: applying one or more layers of UV protection and scratch resistance enhancing coating on the surface of the formed sheet;

[0013] S5, curing and cooling: the coated sheet is heated and cured, and then cooled to room temperature to allow the sheet to reach a stable state;

[0014] S6. Cutting and post-processing: Cut the sheet into the required size and shape as needed, and then perform necessary post-processing such as polishing, cleaning, etc.

[0015] A processing device for scratch-resistant and UV-resistant sheet material, comprising a conveying device, a cleaning device, a drying device, a mixing device, a melt extrusion device, a coating treatment device, a curing and cooling device, and a cutting device. The mixing device is used to mix raw materials. The mixing device includes a stirring kettle, a stirring frame rotatably connected to the stirring kettle, a speed regulating component connected to the stirring kettle, and a heating component connected to one side of the stirring kettle.

[0016] The speed regulating assembly includes a heating water tank arranged on one side of the stirring kettle, a steam extractor is connected to the upper part of the heating water tank, a gas delivery end of the steam extractor is connected to a piston cylinder, a gas compression plate is slidably connected in the piston cylinder, a sealing column is rotatably connected on the piston cylinder, a sealing cavity is opened in the sealing column, a plurality of piston rods are connected on the sealing column, the piston rod is communicated with the sealing cavity, as the steam in the piston cylinder increases, the gas compression plate moves vertically toward the side close to the sealing cavity to compress the gas in the sealing cavity, so that the piston rod extends, the telescopic end of the piston rod is connected with a telescopic plate, a synchronous wheel that drives the stirring frame to rotate is rotatably connected above the stirring kettle, an elastic synchronous belt is wound between the telescopic plate and the synchronous wheel, and a compression spring that supports the gas compression plate is connected in the sealing cavity;

[0017] The heating component includes a water pump connected to the heating water tank, the water outlet end of the water pump is connected to a connecting pipe, a water storage chamber is opened in the stirring frame, both ends of the stirring frame are rotatably connected to rotary joints, the water storage chamber is communicated with the rotary joint, the other end of the connecting pipe is connected to one of the rotary joints, and a return pipe is connected to the other rotary joint, and the other end of the return pipe extends into the heating water tank.

[0018] Furthermore, the exhaust end of the steam extractor, the water pumping end of the water pump and the return end of the return pipe are all connected to a graded adjustment component, and the graded adjustment component includes a plurality of mounting pipes, and a plurality of diversion nozzles are connected to the mounting pipes in a linear array with equal intervals along the length direction of the mounting pipes, and the diversion nozzles are provided with electronic valves. The heating water tank is connected to a plurality of partition plates to divide the heating water tank into a plurality of heating spaces, and each of the heating spaces is connected to a heating plate.

[0019] Furthermore, a premix assembly is provided on one side of the stirring kettle, and the premix assembly includes a mixing frame connected to the stirring kettle, a mixing chamber is provided in the mixing frame, at least two feeding pipes are connected to the mixing frame, a first mixing rack and multiple second mixing racks are rotatably connected in the mixing chamber, and the multiple second mixing racks are symmetrically arranged in the mixing frame with the first mixing rack as the center, and a driving member for driving the first mixing rack and the second mixing rack to rotate is further provided on one side of the mixing frame.

[0020] Furthermore, the driving member includes a connecting frame connected to one side of the mixing frame, a driving gear is rotatably connected in the connecting frame, the driving gear is coaxially arranged with the first mixing frame, one side of the driving gear is meshed with multiple driving gears, the driving gear is coaxially arranged with the second mixing frame, and one side of the connecting frame is connected to a driving motor that drives the driving gear to rotate.

[0021] Furthermore, a servo motor driving the sealing column to rotate is connected to the stirring kettle, a first driven gear is connected to the stirring frame, a second driven gear is meshed with one side of the first driven gear, a mounting shaft is connected to the second driven gear, and the synchronous wheel is connected to the mounting shaft.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. By heating the water tank and extracting and delivering steam through the steam extractor, the piston rod can automatically adjust the extension and contraction according to the change of hot water temperature, thereby controlling the stirring speed of the stirring frame. This ensures that in the initial stage of raw material stirring, when the viscosity of the raw material is high, the stirring speed is slow to avoid splashing and waste of raw materials. As the temperature of the raw material increases, the viscosity decreases, and the stirring speed gradually increases, thereby improving the mixing effect.

[0024] 2. The heating component can meet the special temperature requirements of different raw materials by gradually adjusting the heating temperature, so as to better exert the performance of the raw materials, the raw materials can be mixed more evenly, and the overall quality of the product can be improved.

[0025] 3. By using the partition plate in conjunction with multiple diversion nozzles and partition plates, multiple independent heating spaces are created in the heating water tank, realizing the alternating cycle of heating and cooling, ensuring a continuous and controllable raw material heating and stirring process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 It is a rear view of the present invention;

[0028] Figure 3 is a cross-sectional view of the present invention;

[0029] Figure 4 This is a schematic diagram of the internal structure of the heating water tank in the present invention;

[0030] Figure 5 Schematic diagram of the connection structure between the water pump and the connecting pipe in the present invention;

[0031] Figure 6 Schematic diagram of the connection structure between the stirring kettle and the discharge pipe in the present invention;

[0032] Figure 7 Schematic diagram of the connection structure of the premix assembly in the present invention;

[0033] Figure 8 For the present invention Figure 5 A magnified view of the structure at point A;

[0034] Figure 9For the present invention Figure 3 A magnified view of the structure at B in the middle;

[0035] Figure 10 For the present invention Figure 4 A magnified view of the structure at C in the middle;

[0036] Figure 11 For the present invention Figure 6 Enlarged view of the structure at point D in the middle.

[0037] Figure: 1. Mixing kettle; 2. Mixing frame; 300. Speed regulating assembly; 301. Heating water tank; 302. Steam extractor; 303. Piston cylinder; 304. Gas compression plate; 305. Piston rod; 306. Telescopic plate; 307. Synchronous pulley; 308. Elastic synchronous belt; 309. Compression spring; 400. Heating assembly; 401. Water pump; 402. Connecting pipe; 403. Rotary joint; 5. Servo motor; 6. First driven gear; 7. Second driven gear; 8. Mounting shaft; 900, graded adjustment component; 901, mounting pipe; 902, diverter nozzle; 903, electronic valve; 904, partition plate; 905, heating plate; 1000, premix component; 1001, mixing frame; 1002, feed pipe; 1003, first mixing rack; 1004, second mixing rack; 1100, driving member; 1101, driving gear; 1102, driving gear; 1103, driving motor; 12, discharge pipe; 13, water inlet pipe; 14, fixing cylinder; 15, connecting hole. DETAILED DESCRIPTION

[0038] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0039] The invention provides a scratch-resistant and UV-proof sheet material, which is prepared by mixing polycarbonate, acrylate-styrene-acrylonitrile copolymer and additives, wherein the additives include silicone compounds, hard fillers and UV absorbers.

[0040] The present invention provides a method for preparing a scratch-resistant and UV-resistant sheet, comprising the following steps:

[0041] S1. Pretreatment: Polycarbonate, acrylate-styrene-acrylonitrile copolymer, and additives having UV resistance and enhanced scratch resistance are selected and transported to a cleaning device through a conveying device to clean the raw materials respectively, and then the cleaned raw materials are dried in a drying device;

[0042] S2. Mixing: polycarbonate, acrylate-styrene-acrylonitrile copolymer, and additives having UV resistance and enhanced scratch resistance are mixed in a certain proportion using a mixing device;

[0043] S3, melt extrusion: the mixed raw materials are transported to a melt extrusion device, heated to a molten state, and extruded into a continuous sheet shape;

[0044] S4. Surface coating treatment: applying one or more layers of UV protection and scratch resistance enhancing coating on the surface of the formed sheet;

[0045] S5, curing and cooling: the coated sheet is heated and cured, and then cooled to room temperature to allow the sheet to reach a stable state;

[0046] S6. Cutting and post-processing: Cut the sheet into the required size and shape as needed, and then perform necessary post-processing such as polishing, cleaning, etc.

[0047] The present invention provides a processing device for scratch-resistant and UV-resistant sheet materials, comprising a conveying device, a cleaning device, a drying device, a mixing device, a melt extrusion device, a coating treatment device, a solidification and cooling device, and a cutting device, wherein the conveying device is used to convey mixed raw materials into the cleaning device, the cleaning device is used to clean the raw materials, the drying device is used to dry the cleaned raw materials, the mixing device is used to mix the raw materials, the melt extrusion device is used to heat the mixed raw materials to a molten state and extrude them into a continuous sheet shape, the coating treatment device is used to apply an UV-resistant and scratch-resistant coating on the surface of the sheet, the solidification and cooling device is used to heat and solidify the coated sheet, and the cutting device is used to cut the sheet into a required size and shape.

[0048] See also Figure 1-11 The mixing device includes a stirring tank 1, a stirring frame 2 rotatably connected to the stirring tank 1 for stirring the raw materials, a heating component 400 connected to one side of the stirring tank 1 for adjusting the stirring temperature, a speed regulating component 300 connected to the stirring tank 1 for synchronously adjusting the stirring rate with temperature changes, and a discharge pipe 12 connected to one side of the stirring tank 1 for discharging the materials;

[0049] Please refer to the specific Figure 1 、 Figure 8 and Figure 9The specific structure of the speed regulating assembly 300 is disclosed. The speed regulating assembly 300 includes a heating water tank 301 arranged on one side of the stirring tank 1. The heating water tank 301 is connected to a steam extractor 302. The gas delivery end of the steam extractor 302 is connected to a piston cylinder 303. A gas compression plate 304 is slidably connected to the piston cylinder 303. A sealing column is rotatably connected to the piston cylinder 303. A sealing cavity is opened in the sealing column. A plurality of piston rods 305 are connected to the sealing column. The piston rods 305 The piston cylinder 303 is connected to the sealed chamber. As the steam in the piston cylinder 303 increases, the gas compression plate 304 moves vertically toward the side close to the sealed chamber to compress the gas in the sealed chamber, causing the piston rod 305 to extend. The telescopic end of the piston rod 305 is connected to the telescopic plate 306. The top of the stirring kettle 1 is connected to a synchronous wheel 307 that drives the stirring frame 2 to rotate. An elastic synchronous belt 308 is wound between the telescopic plate 306 and the synchronous wheel 307. A compression spring 309 is connected to the sealed chamber to support the gas compression plate 304.

[0050] Please refer to Figure 5 and Figure 8 The structure inside the heating component 400 is further disclosed. The heating component 400 includes a water pump 401 connected to the heating water tank 301. The water outlet end of the water pump 401 is connected to a connecting pipe 402. A water storage chamber is opened in the stirring frame 2. Both ends of the stirring frame 2 are rotatably connected to a rotary joint 403. The water storage chamber is connected to the rotary joint 403. The other end of the connecting pipe 402 is connected to one of the rotary joints 403. The other rotary joint 403 is connected to a return pipe, and the other end of the return pipe extends into the heating water tank 301.

[0051] Preferably, a fixed cylinder 14 is connected to the mixing kettle 1, and the piston cylinder 303, piston rod 305, telescopic plate 306 and synchronous wheel 307 are all rotatably connected in the fixed cylinder 14. The rear side of the heating water tank 301 is connected to multiple water inlet pipes 13, and a plurality of connecting holes 15 are opened on the stirring frame 2. The provided connecting holes 15 can reduce the stirring pressure and prevent the stirring frame 2 from being damaged due to excessive pressure.

[0052] During specific implementation, the heating water tank 301 is used to heat and generate hot water, and then the steam extractor 302 is used to extract the steam generated by the heating of the hot water and transport it to the piston cylinder 303. Then the gas pressure in the piston cylinder 303 increases and compresses the gas, and the gas compression plate 304 moves downward to squeeze the gas in the sealed chamber. At this time, the pressure in the sealed chamber increases, thereby driving the piston rod 305 to extend and retract. During the synchronous extension and retraction of the multiple piston rods 305, the diameter of the driving wheel composed of the multiple piston rods 305 increases. At this time, the transmission ratio between the synchronous wheel 307 and the driving wheel composed of the multiple piston rods 305 changes, so that the speed of the synchronous wheel 307 increases, thereby driving the speed of the stirring frame 2 to increase. As the hot water is continuously heated, its temperature gradually increases, and the amount of steam generated gradually increases. At this time, the diameter of the driving wheel composed of the multiple piston rods 305 can be slowly increased, thereby continuously accelerating the speed of the stirring frame 2. At this time, the stirring speed of the stirring frame 2 can be changed from slow to fast. Starting the water pump 401 can pump the water in the heating water tank 301 into the stirring frame 2 to carry heat on the stirring frame 2, and then using the stirring The rack 2 heats the raw materials while stirring them. At the same time, since the temperature in the heating water tank 301 gradually increases, the stirring rack 2 can gradually heat the raw materials. When the raw materials are just added for stirring, the viscosity of the raw materials is relatively high due to the additives. Through the coordinated use of the speed regulating component 300 and the heating component 400, the raw materials have a slower stirring speed in the initial stage of stirring, at which time splashing and waste of raw materials can be avoided. As the stirring proceeds, as the temperature in the heating water tank 301 gradually increases, the raw materials are gradually heated by the stirring rack 2 and the temperature gradually increases, the viscosity decreases, and the fluidity increases. At this time, the piston rod 305 is affected by the gradually increasing steam and will also drive the stirring rack 2 to gradually increase the stirring speed, thereby accelerating the mixing speed and improving the mixing effect. Since different raw materials have different requirements for temperature, the heating temperature is gradually adjusted through this setting, which can meet the special temperature requirements of different raw materials, thereby better exerting the performance of the raw materials. Secondly, by making the stirring speed proportional to the temperature change, it is possible to reduce unnecessary energy consumption while ensuring the stirring effect.

[0053] Please continue to refer to Figure 4 、 Figure 5 and Figure 10In order to facilitate the water passing through the stirring frame 2 to be continuously in a gradually heated state, that is, to facilitate the mixing and stirring of multiple batches of raw materials, it is necessary to further disclose the structure of the graded adjustment component 900. The exhaust end of the steam extractor 302, the water extraction end of the water pump 401 and the return end of the return pipe are all connected to the graded adjustment component 900. The graded adjustment component 900 includes a plurality of mounting pipes 901. A plurality of diverter nozzles 902 are connected to the mounting pipes 901 in a linear array with equal intervals along the length direction of the mounting pipes 901. The diverter nozzles 902 are provided with electronic valves 903. A plurality of partition plates 904 are connected to the heating water tank 301 to divide the heating water tank 301 into a plurality of heating spaces. Each heating space is connected to a heating plate 905.

[0054] It should be noted that the partition plate 904 is a vacuum insulation panel, which has a good thermal insulation effect and is used to prevent heat transfer;

[0055] In a specific implementation, the partition plate 904 is used in conjunction with multiple diversion nozzles 902 and the partition plate 904 to divide the interior of the heating water tank 301 into multiple independent heating spaces. Each heating space can independently control the heating and cooling of water. The water in the first heating space is heated. When the temperature reaches the set value, the water is used to heat the stirring rack 2 and stir the raw materials at the same time. When the stirring of this batch of raw materials is completed and the next batch of raw materials is ready to be stirred, the heating of the first heating space is turned off and the heating plate 905 in the second heating space is turned on. At this time, the water in the first space is heated. Since it is no longer heated, it will begin to cool naturally, and the water in the second heating space will begin to be heated. Similarly, when the third batch of raw materials needs to be stirred, the hot water in the third heating space is used. At the same time, the water in the second heating space begins to cool, and the water in the first heating space may have cooled to a temperature that can be reheated. The diverter nozzle 902 and the partition plate 904 are conveniently controlled to control which space the water is drawn from to enter the stirring rack 2, and to which space the water in the stirring rack 2 is returned. This setting enables the speed regulating component 300 and the heating component 400 to work in a cycle to provide a stirring effect on the raw materials.

[0056] To further improve the mixing effect, premixing can be done in advance, please refer to Figure 7A premix assembly 1000 is also provided on one side of the stirring tank 1. The premix assembly 1000 includes a mixing frame 1001 connected to the stirring tank 1. A mixing chamber is provided in the mixing frame 1001. At least two feeding pipes 1002 are connected to the mixing frame 1001. A first mixing rack 1003 and a plurality of second mixing racks 1004 are rotatably connected in the mixing chamber. The plurality of second mixing racks 1004 are symmetrically arranged in the mixing frame 1001 with the first mixing rack 1003 as the center. A driving member 1100 for driving the first mixing rack 1003 and the second mixing rack 1004 to rotate is also provided on one side of the mixing frame 1001.

[0057] During specific implementation, the raw materials are introduced into the mixing chamber from the feed pipe 1002, and then the first mixing rack 1003 and the second mixing rack 1004 are started synchronously. The first mixing rack 1003 can perform initial premixing of the raw materials, and introduce the raw materials into the second mixing rack 1004, so that the second mixing rack 1004 performs secondary premixing of the raw materials. This setting is convenient for multiple premixing of the raw materials, which is beneficial to the uniformity of subsequent raw material mixing. This setting is convenient for mixing the remaining raw materials before introducing additives.

[0058] To facilitate the synchronous rotation of the first mixing rack 1003 and the second mixing rack 1004, please refer to Figure 11 The driving member 1100 includes a connecting frame connected to one side of the mixing frame 1001, a driving gear 1101 is rotatably connected in the connecting frame, the driving gear 1101 is coaxially arranged with the first mixing frame 1003, one side of the driving gear 1101 is meshed with a plurality of driving gears 1102, the driving gear 1102 is coaxially arranged with the second mixing frame 1004, and one side of the connecting frame is connected to a driving motor 1103 that drives the driving gear 1101 to rotate;

[0059] During specific implementation, starting the driving motor 1103 can drive the driving gear 1101 to rotate, and then the driving gear 1101 can drive the first mixing rack 1003 to rotate. During the rotation of the driving gear 1101, multiple first mixing racks 1003 can be driven to rotate, and then the driving gear 1102 can drive the second mixing rack 1004 to rotate, thereby making the second mixing rack 1004 and the first mixing rack 1003 rotate synchronously to premix the raw materials.

[0060] Please refer to Figure 3 In order to provide a driving source for the rotation of the stirring frame 2, a servo motor 5 for driving the sealing column to rotate is connected to the stirring kettle 1. The stirring frame 2 is connected to a first driven gear 6. One side of the first driven gear 6 is meshed with a second driven gear 7. The second driven gear 7 is connected to a mounting shaft 8, and the synchronous wheel 307 is connected to the mounting shaft 8.

[0061] During specific implementation, the servo motor 5 is started to drive the telescopic plate 306 to rotate, and the telescopic plate 306 drives the synchronous wheel 307 to rotate through the elastic synchronous belt 308. The synchronous wheel 307 can drive the installation shaft 8 to rotate. During the rotation process, the installation shaft 8 can drive the second driven gear 7 to rotate, and then the first driven gear 6 engaged with the second driven gear 7 can drive the stirring frame 2 to rotate to stir the raw materials.

[0062] Working principle: When the raw materials need to be stirred:

[0063] The heating water tank 301 is used to heat and generate hot water, and then the steam generated by the hot water heating is extracted and transported to the piston cylinder 303 by the steam extractor 302. Then the gas pressure in the piston cylinder 303 increases and compresses the gas compression plate 304, which moves downward to squeeze the gas in the sealed chamber. At this time, the pressure in the sealed chamber increases, thereby driving the piston rod 305 to retract. During the synchronous retraction of the multiple piston rods 305, the diameter of the driving wheel composed of the multiple piston rods 305 increases. At this time, the transmission ratio between the synchronous wheel 307 and the driving wheel composed of the multiple piston rods 305 changes, so that the speed of the synchronous wheel 307 increases, thereby driving the speed of the stirring frame 2 to increase. As the hot water is continuously heated, its temperature gradually increases, and the amount of steam generated gradually increases. At this time, the extension and retraction of the piston rod 305 can be slowly increased, thereby continuously accelerating the speed of the stirring frame 2. At this time, the stirring speed of the stirring frame 2 can be changed from slow to fast. Starting the water pump 401 can pump the water in the heating water tank 301 into the stirring frame 2 to carry heat on the stirring frame 2, and then the stirring frame 2 is used to stir the raw materials. At the same time, the raw materials are heated. At the same time, since the temperature in the heating water tank 301 is gradually increased, the stirring frame 2 can gradually heat the raw materials. When the raw materials are just added for stirring, the viscosity of the raw materials is relatively large due to the additives. Through the coordinated use of the speed regulating component 300 and the heating component 400, the raw materials have a slower stirring speed in the initial stage of stirring, at which time splashing and waste of raw materials can be avoided. As the stirring proceeds, as the temperature in the heating water tank 301 gradually increases, the raw materials are gradually heated by the stirring frame 2, the temperature gradually increases, the viscosity decreases, and the fluidity increases. At this time, the piston rod 305 is affected by the gradually increasing steam and also drives the stirring frame 2 to gradually increase the stirring speed, thereby accelerating the mixing speed and improving the mixing effect. Since different raw materials have different requirements for temperature, the heating temperature is gradually adjusted by this setting, which can meet the special temperature requirements of different raw materials, thereby better exerting the performance of the raw materials. Secondly, by making the stirring speed proportional to the temperature change, it is possible to reduce unnecessary energy consumption while ensuring the stirring effect.

[0064] When multiple batches of raw materials need to be mixed:

[0065] By using the partition plate 904 in conjunction with the multiple diversion nozzles 902 and the partition plate 904, the interior of the heating water tank 301 is divided into multiple independent heating spaces. Each heating space can independently control the heating and cooling of water. The water in the first heating space is heated. When the temperature reaches the set value, the water is used to heat the stirring rack 2 and stir the raw materials at the same time. When the stirring of this batch of raw materials is completed and the next batch of raw materials is ready to be stirred, the heating of the first heating space is turned off and the heating plate 905 in the second heating space is turned on. At this time, the water in the first space is not heated. After reheating, it will begin to cool naturally, while the water in the second heating space will begin to heat. Similarly, when the third batch of raw materials needs to be stirred, the hot water in the third heating space is used. At the same time, the water in the second heating space begins to cool, while the water in the first heating space may have cooled to a temperature suitable for reheating. The diverter nozzle 902 and partition plate 904 are provided to facilitate control of which space water is drawn from to enter the stirring frame 2 and to which space the water in the stirring frame 2 is returned. This configuration allows the speed adjustment component 300 and the heating component 400 to work in a cycle to provide a stirring effect on the raw materials.

[0066] When raw materials need to be premixed:

[0067] The raw materials are introduced into the mixing chamber from the feed pipe 1002, and then the first mixing rack 1003 and the second mixing rack 1004 are started synchronously. The first mixing rack 1003 can perform the initial premixing of the raw materials, and introduce the raw materials to the second mixing rack 1004, so that the second mixing rack 1004 can perform the secondary premixing of the raw materials. This arrangement facilitates multiple premixing of the raw materials, which is beneficial to the uniformity of subsequent raw material mixing. This arrangement facilitates mixing of the remaining raw materials before introducing additives.

Claims

1. A processing device for scratch-resistant and UV-resistant sheets, characterized by: The invention comprises a conveying device, a cleaning device, a drying device, a mixing device, a melt extrusion device, a coating treatment device, a curing and cooling device, and a cutting device, wherein the conveying device is used to convey the mixed raw material obtained by mixing polycarbonate, acrylate-styrene-acrylonitrile copolymer and additives with UV resistance and scratch resistance enhancement mixed by the mixing device to the cleaning device, the cleaning device is used to clean the raw material, the drying device is used to dry the cleaned raw material, the mixing device is used to mix the raw material, the melt extrusion device is used to heat the mixed raw material to a molten state and extrude it into a continuous sheet shape, the coating treatment device is used to apply an UV protection and scratch resistance coating on the surface of the sheet, the curing and cooling device is used to heat and cure the coated sheet, and the cutting device is used to cut the sheet into a required size and shape; The mixing device comprises a stirring kettle (1), a stirring frame (2) rotatably connected to the stirring kettle (1), a speed regulating component (300) connected to the stirring kettle (1), and a heating component (400) connected to one side of the stirring kettle (1); The speed regulating assembly (300) comprises a heating water tank (301) arranged on one side of the stirring kettle (1), a steam extractor (302) is connected to the heating water tank (301), a gas delivery end of the steam extractor (302) is connected to a piston cylinder (303), a gas compression plate (304) is slidably connected in the piston cylinder (303), a sealing column is rotatably connected to the piston cylinder (303), a sealing cavity is provided in the sealing column, a plurality of piston rods (305) are connected to the sealing column, the piston rods (305) are in communication with the sealing cavity, and as the When the steam in the piston cylinder (303) increases, the gas compression plate (304) moves vertically toward the side close to the sealed chamber to compress the gas in the sealed chamber, thereby extending the piston rod (305). The telescopic end of the piston rod (305) is connected to a telescopic plate (306). A synchronous wheel (307) for driving the stirring frame (2) to rotate is rotatably connected above the stirring kettle (1). An elastic synchronous belt (308) is wound between the telescopic plate (306) and the synchronous wheel (307). A compression spring (309) for supporting the gas compression plate (304) is connected to the sealed chamber. The heating component (400) includes a water pump (401) connected to the heating water tank (301), the water outlet end of the water pump (401) is connected to a connecting pipe (402), a water storage chamber is provided in the stirring frame (2), both ends of the stirring frame (2) are rotatably connected to rotary joints (403), the water storage chamber is communicated with the rotary joints (403), the other end of the connecting pipe (402) is connected to one of the rotary joints (403), and the other rotary joint (403) is connected to a return pipe, and the other end of the return pipe extends into the heating water tank (301).

2. The processing equipment for scratch-resistant and UV-resistant sheets according to claim 1, characterized in that: The air extraction end of the steam extractor (302), the water extraction end of the water pump (401), and the return end of the return pipe are all connected to a graded adjustment component (900). The graded adjustment component (900) includes a plurality of mounting pipes (901). The mounting pipes (901) are connected to a plurality of diversion nozzles (902) at equal intervals in a linear array along the length direction of the mounting pipes (901). The diversion nozzles (902) are provided with electronic valves (903). The heating water tank (301) is connected to a plurality of partition plates (904) to divide the heating water tank (301) into a plurality of heating spaces. Each of the heating spaces is connected to a heating plate (905).

3. The processing equipment for scratch-resistant and UV-resistant sheets according to claim 1, characterized in that: A premix assembly (1000) is further provided on one side of the stirring tank (1), and the premix assembly (1000) includes a mixing frame (1001) connected to the stirring tank (1), a mixing chamber is provided in the mixing frame (1001), at least two feeding pipes (1002) are connected to the mixing frame (1001), a first mixing rack (1003) and a plurality of second mixing racks (1004) are rotatably connected in the mixing chamber, and the plurality of second mixing racks (1004) are symmetrically arranged in the mixing frame (1001) with the first mixing rack (1003) as the center, and a driving member (1100) for driving the first mixing rack (1003) and the second mixing rack (1004) to rotate is further provided on one side of the mixing frame (1001).

4. The processing equipment for scratch-resistant and UV-resistant sheets according to claim 3, characterized in that: The driving member (1100) comprises a connecting frame connected to one side of the mixing frame (1001), a driving gear (1101) being rotatably connected in the connecting frame, the driving gear (1101) being coaxially arranged with the first mixing frame (1003), a plurality of driving gears (1102) being meshed and connected on one side of the driving gear (1101), the driving gears (1102) being coaxially arranged with the second mixing frame (1004), and a driving motor (1103) for driving the driving gear (1101) to rotate being connected to one side of the connecting frame.

5. The processing equipment for scratch-resistant and UV-resistant sheets according to claim 1, characterized in that: A servo motor (5) for driving the sealing column to rotate is connected to the stirring kettle (1), a first driven gear (6) is connected to the stirring frame (2), a second driven gear (7) is meshedly connected to one side of the first driven gear (6), a mounting shaft (8) is connected to the second driven gear (7), and the synchronous wheel (307) is connected to the mounting shaft (8).

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