A special cleaning and oiling machine for fiber cement board

Abstract

The application discloses a special cleaning and oiling machine for fiber cement boards, and relates to the technical field of board cleaning, which comprises at least two double-sided dry brush cleaning machines connected in sequence and arranged in sequence along the conveying direction; a cleaning roller assembly arranged in the double-sided dry brush cleaning machine and used for continuously cleaning the lower roller body of the double-sided dry brush cleaning machine during the dry brushing process; at least three double-sided washing machines connected in sequence and arranged downstream of the double-sided dry brush cleaning machine along the conveying direction; and a board conveying machine arranged at the feeding end of each double-sided dry brush cleaning machine and the feeding end of each double-sided washing machine and used for conveying the boards. The cleaning roller assembly is introduced to continuously clean the lower roller body, scrape off or brush off the adhered release agent, dust and other dirt in time, and the double-sided water scraping assembly is used to forcibly scrape off most of the water stains on the board surface, so that the oiling area caused by water stain repulsion is eliminated.

Description

Technical Field

[0001] This invention relates to the field of panel cleaning technology, and in particular to a special cleaning and oiling machine for fiber cement boards. Background Technology

[0002] After fiber cement boards are manufactured, their surfaces generally retain residual release agents, mineral salts, cutting dust, and potentially oil or rust contaminants. If these stains are not removed promptly, they will directly hinder the even spreading and firm adhesion of the oil film in the subsequent oiling process, leading to pinholes or even peeling of the curing oil or moisture-proof oil. At the same time, salts and dust may absorb moisture and turn white under subsequent environmental changes, seriously affecting the appearance of the board and the durability of the coating. Cleaning fiber cement boards with a cleaning machine can remove contaminants and activate the surface, providing a clean, uniform substrate surface with good wetting properties for subsequent oiling and finished product stacking. As disclosed in the patent announcement CN117696484B, a board cleaning device includes a cleaning component and conveying components located on both sides of the cleaning component. The conveying components include a transmission frame, a transmission roller, and a driven roller. The transmission roller is mounted on the transmission frame, which is equipped with a slider and a track matching the slider. The driven roller is connected to the slider and is located above the transmission roller. The cleaning component includes a base, an upper support, and two roller brush modules. The upper support is mounted on the base. Each roller brush module is equipped with a brush roller, a follower block, a servo motor, and a brush covering the outer wall of the brush roller. The brush roller is mounted on the follower block. The upper support is equipped with a lifting cylinder, which has a conveying component on each side of the cleaning component to improve the conveying thrust of the board. It can provide sufficient power to convey the board when the brush is cleaning. The driven roller holds the board under its own weight to avoid indentation on the surface of the board during the conveying process. As can be seen, the above technical solution uses a combination of conveying and cleaning components to clean boards such as fiber cement boards. However, in the process of using the above solution, the one or two cleaning machines that clean the fiber cement boards first have to directly face these boards with the most severe original pollution. With continuous production, dirt accumulates layer by layer on the roller surface, especially in dry sweeping, making subsequent cleaning and maintenance difficult. Moreover, after cleaning, the fiber cement boards are directly sent to the dryer and then processed by the subsequent oiling machine. The upper and lower surfaces of the fiber cement boards still have a lot of water stains. Short-term and short-distance drying treatment cannot effectively remove the water stains, resulting in the boards still having high humidity when they leave the dryer. When such damp boards with a small amount of water stains enter the oiling machine, the high surface tension of the water stain areas repels the oil, causing local oil leakage. At the same time, discontinuous water spots or water flow patterns on the board surface will disrupt the uniform transfer of the oiling rollers, forming strip-shaped or wavy drag marks during subsequent conveying. Summary of the Invention

[0003] The purpose of this invention is to provide a special cleaning and oiling machine for fiber cement boards. A palletizer places single fiber cement boards at fixed intervals on a roller conveyor line. The conveyor line sequentially feeds them into at least two double-sided dry brush cleaning machines for dry brushing. During the dry brushing process, the cleaning roller assembly continuously cleans the lower roller of the cleaning machine. Subsequently, the boards enter at least three double-sided water washing machines to complete the thorough cleaning of the board surface. Each double-sided dry brush cleaning machine and double-sided water washing machine is equipped with a board feeder at the feeding end to provide sufficient conveying thrust. The cleaned boards are sent to a double-chain rubber roller conveyor, whose feeding end is equipped with a double-sided scraping assembly to first remove residual water stains on the board surface. At the same time, a wheel-type centering assembly centers and aligns the boards. After removing water stains, the boards pass through an oven and a blower heating assembly, and finally arrive at the upper and lower cotton roller oiling assemblies to complete the oiling of the corresponding surfaces, thereby solving the problems of the device proposed in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a special cleaning and oiling machine for fiber cement boards, comprising; At least two double-sided dry brush sweepers connected in sequence are arranged sequentially along the conveying direction; A cleaning roller assembly is provided in the double-sided dry brush sweeper and is used to continuously clean the lower roller of the double-sided dry brush sweeper during the dry brushing process. At least three double-sided washing machines connected in sequence are arranged downstream of the double-sided dry brush cleaning machine along the conveying direction; The plate feeders are respectively installed at the feeding end of each double-sided dry brush cleaning machine and the feeding end of each double-sided water washing machine, and are used to convey the plates. A double-chain rubber roller conveyor is located downstream of the three double-sided washing machines to receive and transport the washed boards. The feed end of the double-chain rubber roller conveyor is equipped with a double-sided scraping assembly for scraping off residual water stains on the upper and lower surfaces of the boards. Downstream of the double-sided scraping assembly is a wheel-type centering assembly for centering and aligning the boards. An oven is installed on the frame of the double-chain rubber roller conveyor and located downstream of the wheel centering assembly. A blower heating assembly is installed on the outer wall of the oven. Two upper and lower cotton roller oiling assemblies are located on the outlet side of the oven. A central control box is installed on one side of the double-chain rubber roller conveyor. The central control box is electrically connected to the double-sided dry brush cleaner, double-sided water washing machine, plate feeder, double-chain rubber roller conveyor, double-sided scraper assembly, wheel centering assembly and blower heating assembly.

[0005] Preferably, the double-sided dry brush sweeper includes a main frame, a lower brush roller, a synchronous belt rotary drive assembly, a lifting assembly, an upper brush roller, and a permanent magnet synchronous servo motor. The lower brush roller is rotatably mounted inside the main frame at an upper position. The lifting assembly is mounted on the top of the main frame. The permanent magnet synchronous servo motor is mounted on the drive block of the lifting assembly. The upper brush roller is fixed on the output shaft of the permanent magnet synchronous servo motor and located diagonally above the lower brush roller. The synchronous belt rotary drive assembly is located inside the main frame at a lower position and is used to drive the lower brush roller to rotate.

[0006] Preferably, the cleaning roller assembly includes a longitudinal beam frame fixed at a lower position inside the main frame, a longitudinal shaft rotatably mounted at a higher position inside the main frame via a bearing seat, and a swing frame fitted on the longitudinal shaft. The side of the swing frame facing the lower brush roller is integrally formed with a comb plate. The top of the longitudinal beam frame is hinged with two cylinders along the length of the longitudinal shaft, and the top of the piston rod of the cylinders is hinged to the swing frame.

[0007] Preferably, one of the plate feeders includes a side platform fixed on the outer wall of the main frame's feeding side, a second lifting assembly mounted on the side platform, a rubber roller rotatably mounted on the drive block of the second lifting assembly via a bearing seat along the length of the first lower brush roller, and a support roller rotatably mounted inside the main frame at a lower position. The support roller is flush with the first lower brush roller, and a reduction motor unit for driving the support roller to rotate is mounted on one side of the outer wall of the side platform.

[0008] Preferably, one of the double-sided washing machines includes a sub-frame installed on the discharge side of the main frame, a second lower brush roller rotatably installed inside the sub-frame via a bearing seat, a sprocket rotation drive assembly located on the outer wall of the sub-frame and driving the two second lower brush rollers to rotate together, and a third lifting assembly installed on the sub-frame. An second upper brush roller is rotatably installed on the drive block of the third lifting assembly. The left and right sides of the second upper brush roller are provided with a double-pipe spray washing structure. The interior of the sub-frame is provided with a dirt collection structure.

[0009] Preferably, the dual-pipe spray washing structure consists of a U-shaped main pipe, two electrically controlled valves, and two L-shaped flushing pipes. The two L-shaped flushing pipes are symmetrically arranged on the left and right sides of the upper brush roller. Each of the two L-shaped flushing pipes is equipped with several downward-sloping nozzles at equal intervals along the axial direction. The electrically controlled valves are installed at the liquid inlet end of the L-shaped flushing pipes, and the U-shaped main pipe is installed at the liquid inlet end of the two electrically controlled valves.

[0010] Preferably, the sewage collection structure includes a sewage tank fixed inside the sub-frame and a T-shaped flange pipe installed at the center of the bottom end of the sewage tank.

[0011] Preferably, the double-sided scraper assembly includes a bracket fixed to the feed end of the double-chain rubber roller conveyor frame, two spaced-apart short shafts rotatably mounted on the inner wall of one side of the bracket, and two spaced-apart long shafts rotatably mounted on the inner wall of the other side of the bracket. A plate frame is detachably mounted between the opposite ends of the short shafts and long shafts on the same horizontal plane. A scraper is mounted at the bottom end of the plate frame. Two mirror-symmetrical cylinders are hinged to the inner wall of the bracket on one side of the short shafts. A clamping block is hinged to the piston rod end of the cylinder. The other end of the clamping block and the short shaft are fastened and fixed by a pin. At least one photoelectric switch is mounted on the top of the bracket.

[0012] Preferably, the wheel-type centering assembly includes a side frame bolted to the outer wall of the support, a cylinder three mounted on the outer wall of the side frame, a T-shaped inverted seat fixedly connected to the piston rod of the cylinder three, and a wheel frame bolted to the bottom end of the T-shaped inverted seat. The length direction of the wheel frame is parallel to the conveying direction of the double-chain rubber roller conveyor and extends into the interior of the oven. Several rollers are evenly spaced on the outer wall of the wheel frame away from the side frame.

[0013] Preferably, one of the cotton roller oiling components includes a U-shaped platform fixed to the top wall of the oven, a cylinder four installed on the bottom wall of the U-shaped platform, a roller frame fixed to the lower end of the piston rod of the cylinder four, and a hollow oil outlet roller rotatably installed inside the roller frame via bearings. A sponge sleeve is fixed to the outer circumference of the hollow oil outlet roller, and a rotary joint is fixed to one side of the roller frame. The rotating end of the rotary joint is connected to the liquid inlet end of the hollow oil outlet roller.

[0014] Compared with the prior art, the beneficial effects of the present invention are: 1. By connecting at least two double-sided dry brush cleaning machines in series, the first machine undertakes the main coarse cleaning task, and the second machine handles residual light dirt, thereby dispersing the pollution load and slowing down the rate of severe dirt accumulation on the roller. At the same time, the introduction of the cleaning roller assembly continuously cleans the lower roller, promptly scraping or brushing off the adhering release agent, dust and other dirt, preventing them from being repeatedly compacted and solidified into a hard shell under dry sweeping conditions. This eliminates the need for frequent machine stops for laborious manual scraping, keeping the roller surface relatively clean at all times, effectively reducing maintenance intensity and downtime, and also avoiding secondary scratches or contamination of the board surface caused by uneven dirt accumulation on the roller surface. 2. A double-sided scraper assembly is added at the transition point between the double-chain rubber roller conveyor and the last double-sided washing machine. This assembly forcibly scrapes away most of the free water stains on the board surface, leaving only a thin layer of moisture on the board entering the drying oven. Combined with the wheel-type centering assembly, this ensures that the board moves straight and that the hot air can evenly cover the board surface. Even under the original short-time and short-distance drying conditions, the residual moisture can be completely evaporated, and the board will be delivered dry and spotless, laying the foundation for subsequent oiling. 3. The cotton roller oiling component is soft and absorbs oil evenly, and can fit closely to the board surface. The upper and lower independent components can adjust the oil supply and contact pressure respectively, so that the oil can smoothly penetrate into the dry board surface and form a continuous and smooth oil film, reducing the oil leakage area caused by water stain repulsion, and also eliminating the wavy drag marks caused by water film rupture or water flow impact. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a schematic diagram of the front cross-sectional structure of the present invention; Figure 3 This is a three-dimensional cross-sectional structural diagram of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 1 ; Figure 5 This is a three-dimensional structural diagram of the double-sided dry brush cleaning machine and double-sided water washing machine of the present invention in their assembled state; Figure 6 This is a schematic diagram of the three-dimensional structure of the double-sided dry brush sweeper of the present invention. Figure 1 ; Figure 7 This is a three-dimensional cross-sectional structural diagram of the double-sided dry brush sweeper of the present invention; Figure 8 This is a schematic diagram of the three-dimensional structure of the double-sided dry brush sweeper of the present invention. Figure 2 ; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point A in the middle; Figure 10 This is a schematic diagram of the three-dimensional structure of the swing frame of the present invention; Figure 11 This is a three-dimensional structural diagram of the double-sided washing machine of the present invention; Figure 12 This is a three-dimensional cross-sectional structural diagram of the double-sided washing machine of the present invention; Figure 13 This is a three-dimensional structural diagram of the double-chain rubber roller conveyor of the present invention; Figure 14 This is a three-dimensional structural diagram of the double-sided wiper assembly and wheel-type centering assembly of the present invention in their assembled state. Figure 1 ; Figure 15 This is a three-dimensional structural diagram of the double-sided wiper assembly and wheel-type centering assembly of the present invention in their assembled state. Figure 2 ; Figure 16 For the present invention Figure 13 Enlarged structural diagram at point B; Figure 17 This is a schematic diagram of the three-dimensional structure of the present invention. Figure 2 ; Figure 18 This is a three-dimensional structural diagram of the roller-type oiling assembly of the present invention; Figure 19 This is a three-dimensional cross-sectional structural diagram of the roller-type oiling assembly of the present invention.

[0016] In the diagram: 1. Double-sided dry brush cleaning machine; 101. Main frame; 102. Lower brush roller one; 103. Synchronous belt rotary drive assembly; 104. Lifting assembly one; 105. Upper brush roller one; 106. Permanent magnet synchronous servo motor; 107. Longitudinal beam frame; 2. Double-sided washing machine; 201. Lower brush roller two; 202. Sprocket rotary drive assembly; 203. Lifting assembly three; 204. Upper brush roller two; 205. L-shaped rinsing pipe; 2051. Nozzle; 206. U-shaped main pipe; 207. Electrically controlled valve; 208. Sub-frame; 3. Plate feeder; 301. Side table; 302. Lifting assembly two; 303. Rubber roller; 304. Idler roller; 305. Gear motor unit; 4. Double-chain rubber roller conveyor; 5. Drying oven; 6. Double-sided squeegee assembly; 601 1. Support; 602. Short shaft; 603. Long shaft; 604. Plate frame; 605. Scraper; 606. Cylinder II; 607. Clamping block; 608. Photoelectric switch; 7. Wheel-type centering assembly; 701. Side platform; 702. Cylinder III; 703. T-shaped inverted seat; 704. Wheel frame; 705. Roller; 8. Blower heating assembly; 9. Cotton roller oiling assembly; 901. U-shaped hanging platform; 902. Cylinder IV; 903. Roller frame; 904. Rotary joint; 905. Hollow oil outlet roller; 906. Sponge sleeve; 10. Central control box; 11. Sewage collection structure; 1101. Sewage tank; 1102. T-shaped flange pipe; 12. Cleaning roller assembly; 1201. Cylinder I; 1202. Longitudinal shaft; 1203. Swing frame; 1204. Comb plate. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.

[0018] Example 1, by Figures 1 to 5 As shown, the present invention includes at least two double-sided dry brush sweepers 1 connected in sequence and arranged in sequence along the conveying direction; The cleaning roller assembly 12 is installed in the double-sided dry brush sweeper 1 and is used to continuously clean the lower roller of the double-sided dry brush sweeper 1 during the dry brushing process. At least three double-sided washing machines 2 connected in sequence are arranged downstream of the double-sided dry brush sweeper 1 along the conveying direction; The plate feeder 3 is set at the feeding end of each double-sided dry brush cleaning machine 1 and the feeding end of each double-sided water washing machine 2, and is used to convey the plate parts. The double-chain rubber roller conveyor 4 is located downstream of the three double-sided washing machines 2 and is used to receive and transport the washed boards. Compared with ordinary belt conveyors, the double-chain rubber roller conveyor 4 will not slip or run off-center due to water stains or oil stains. The gap between the rubber rollers allows water and debris to leak down naturally and will not accumulate on the conveying surface. The feed end of the double-chain rubber roller conveyor 4 is equipped with a double-sided scraper assembly 6 for scraping off residual water stains on the upper and lower surfaces of the board. Downstream of the double-sided scraper assembly 6, a wheel-type centering assembly 7 is installed for centering and aligning the board. Oven 5 is installed on the frame of double-chain rubber roller conveyor 4 and is located downstream of wheel centering assembly 7. Blower heating assembly 8 is installed on the outer wall of oven 5. Two upper and lower cotton roller oiling components 9 are set on the outlet side of the oven 5. A central control box 10 is installed on one side of the double-chain rubber roller conveyor 4. The central control box 10 is electrically connected to the double-sided dry brush cleaner 1, the double-sided water washing machine 2, the plate feeder 3, the double-chain rubber roller conveyor 4, the double-sided scraper assembly 6, the wheel centering assembly 7, and the blower heating assembly 8. The central control box 10 integrates a programmable logic controller, a touch screen human-machine interface, a frequency converter control circuit, and various sensor signal acquisition modules. The touch screen on the central control box 10 sets and stores the process formulas for different specifications of fiber cement boards, including the linear speed of each conveying section, the brush roller speed and forward / reverse mode of the double-sided dry brush sweeper 1, the spray pressure and start / stop sequence of the double-sided water washing machine 2, the heating temperature curve and air volume of the blower heating component 8, and the oil supply and contact pressure of the cotton roller oiling component 9.

[0019] Example 2, based on Example 1, is... Figure 6 , Figure 7 , Figure 8 , Figure 9 and Figure 10 The double-sided dry brush sweeper 1 includes a main frame 101, a lower brush roller 102, a synchronous belt rotary drive assembly 103, a lifting assembly 104, an upper brush roller 105, and a permanent magnet synchronous servo motor 106. The lower brush roller 102 is rotatably mounted inside the main frame 101 at an upper position. The lifting assembly 104 is mounted on the top of the main frame 101. The permanent magnet synchronous servo motor 106 is mounted on the drive block of the lifting assembly 104. The upper brush roller 105 is fixed on the output shaft of the permanent magnet synchronous servo motor 106 and is located diagonally above the lower brush roller 102. The synchronous belt rotary drive assembly 103 is located inside the main frame 101 at a lower position and is used to drive the lower brush roller 102 to rotate. When the double-sided dry brush cleaning machine 1 is working, the lifting component 104 is controlled by the central control box 10 to adjust the distance between the upper brush roller 105 and the lower brush roller 102 according to the thickness of the fiber cement board, so as to ensure that there is sufficient contact pressure between the upper brush roller 105, the lower brush roller 102 and the fiber cement board. The permanent magnet synchronous servo motor 106 is used to independently drive the upper brush roller 105 to rotate in order to clean the upper board surface, while the synchronous belt rotation drive assembly 103 independently drives the lower brush roller 102 to rotate. The two remove most of the dry dust, loose release agent and cutting debris from the surface of the fiber cement board by mechanical brushing. During this process, the upper brush roller 105 and the lower brush roller 102 rotate relative to each other and the rotation direction is opposite to the forward direction of the board, forming reverse friction and peeling the dirt off the board surface. The cleaning roller assembly 12 includes a longitudinal beam 107 fixed at a lower position inside the main frame 101, a longitudinal shaft 1202 rotatably mounted at an upper position inside the main frame 101 via bearing seats, and a swing frame 1203 mounted on the longitudinal shaft 1202. A comb plate 1204 is integrally formed on the side of the swing frame 1203 facing the lower brush roller 102. Two cylinders 1201 are hinged to the top of the longitudinal beam 107 along the length of the longitudinal shaft 1202. The piston rods of the cylinders 1201 are hinged to the swing frame 1203. The cleaning roller assembly 12... During cleaning, the staff activates cylinder 1201 through the central control box 10, causing the piston rod of cylinder 1201 to extend. This causes the swing frame 1203 to swing about the longitudinal axis 1202 towards the lower brush roller 102 until the comb plate 1204 is embedded into the bristles or tufts of the lower brush roller 102. When the lower brush roller 102 rotates, the dust and sludge adhering to the roots of the bristles and the roller surface are forcibly removed by the comb plate 1204. Continuous cleaning ensures that even the lower roller of the first double-sided dry brush cleaning machine 1 will not accumulate dirt quickly, thus maintaining a stable brushing effect. One of the plate feeders 3 includes a side platform 301 fixed on the outer wall of the main frame 101 on the feeding side, a second lifting assembly 302 mounted on the side platform 301, a rubber roller 303 rotatably mounted on the drive block of the second lifting assembly 302 along the length of the lower brush roller 102 via a bearing seat, and a support roller 304 rotatably mounted inside the main frame 101 at a lower position. The support roller 304 is flush with the lower brush roller 102. A reduction motor unit 305 for driving the support roller 304 to rotate is mounted on one side of the outer wall of the side platform 301. The rubber roller 303 and the support roller are also included. The spacing of the 304 is adjusted by the lifting assembly 302 controlled by the central control box 10. The rotation of the idler roller 304 is driven by the geared motor unit 305 to overcome the problem of insufficient friction between the board and the cleaning roller, ensuring that each board can get enough thrust to enter the processing area smoothly, avoiding brushing damage, water washing blind spots or board jamming accidents caused by slippage, pause or tilt. The speed of the geared motor unit 305 is set by the central control box 10 and is synchronized with or slightly ahead of the speed of the double-chain rubber roller conveyor 4 and the main conveyor line, thereby pushing the board in.

[0020] Example 3, based on Example 2, by Figure 11 and Figure 12 As shown, one of the double-sided washing machines 2 includes a sub-frame 208 installed on the discharge side of the main frame 101, a second lower brush roller 201 rotatably installed inside the sub-frame 208 via a bearing seat, a sprocket rotation drive assembly 202 set on the outer wall of the sub-frame 208 and driving the two second lower brush rollers 201 to rotate together, and a third lifting assembly 203 installed on the sub-frame 208. An second upper brush roller 204 is rotatably installed on the drive block of the third lifting assembly 203. The left and right sides of the second upper brush roller 204 are provided with a double-pipe spray washing structure. The interior of the sub-frame 208 is provided with a dirt collection structure 11. The dual-pipe spray washing structure consists of a U-shaped main pipe 206, two electrically controlled valves 207 and two L-shaped flushing pipes 205. The two L-shaped flushing pipes 205 are symmetrically arranged on the left and right sides of the upper brush roller 204. Several inclined downward spray nozzles 2051 are installed at equal intervals along the axial direction on both L-shaped flushing pipes 205. The sprocket rotation drive assembly 202 drives the two lower brush rollers 201 to rotate continuously to clean the lower plate surface together. A motor is also required on the drive end of the lifting assembly 203 to drive the upper brush roller 204 to rotate. During this process, the nozzles 2051 of one of the L-shaped rinsing pipes 205 face the upper brush roller 204 and the front lower brush roller 201 to wet and clean the upper plate surface. The nozzles 2051 of the other L-shaped rinsing pipe 205 face the rear lower brush roller 201 to keep the rear lower brush roller 201 wet to clean the lower plate surface. The solenoid valve 207 is installed at the inlet end of the L-shaped flushing pipe 205, and the U-shaped main pipe 206 is installed at the inlet ends of the two solenoid valves 207. Each double-sided washing machine 2 has a U-shaped main pipe 206 that can be independently connected to an external cleaning fluid supply, so that the cleaning fluid is sent into the electronic control valve 207 and the L-shaped rinsing pipe 205, and sprayed onto the roller body through the nozzle 2051. The first machine can use a higher concentration of cleaning agent and a higher pressure, such as 0.5-0.8MPa, to break down stubborn oil stains. The second machine uses medium-pressure clean water for transition rinsing, such as 0.3-0.5MPa. The third machine uses low-pressure clean water for final rinsing, such as 0.2-0.3MPa. The U-shaped main pipe 206 of the three double-sided washing machines 2 can also share the same cleaning solution through a single main pipe; The sewage collection structure 11 includes a sewage tank 1101 fixed inside the sub-frame 208 and a T-flange pipe 1102 installed at the center of the bottom end of the sewage tank 1101. The sewage generated during the cleaning process of the double-sided washing machine 2 is collected in the sewage tank 1101 and discharged through the T-flange pipe 1102.

[0021] Example 4, based on Example 3, by Figure 13 , Figure 14 , Figure 15 and Figure 16 As the fiber cement board is fed from the last double-sided washing machine 2 onto the double-chain rubber roller conveyor 4, the double-sided scraper assembly 6 mechanically removes water stains from the upper and lower surfaces of the board after washing, thereby significantly reducing the heat load on the subsequent drying oven and preventing drying failure due to a large amount of liquid water entering the oven. The double-sided scraper assembly 6 includes a bracket 601 fixed on the feed end of the frame of the double-chain rubber roller conveyor 4, two spaced short shafts 602 rotatably mounted on the inner wall of one side of the bracket 601, and two spaced long shafts 603 rotatably mounted on the inner wall of the other side of the bracket 601. The short shafts 602 and long shafts 603 on the same horizontal plane are detachably mounted between their opposite ends. The plate is equipped with a plate frame 604, and a scraper 605 is installed at the bottom of the plate frame 604. Two mirror-symmetrical cylinders 606 are hinged to the inner wall of the bracket 601 on one side of the short shaft 602. A clamping block 607 is hinged to the piston rod end of the cylinder 606. The other end of the clamping block 607 and the short shaft 602 are fastened and fixed by a pin. The plate passes between the upper and lower scrapers 605. The operator controls the cylinder 606 through the central control box 10. When the piston rod of the cylinder 606 retracts, it will drive the short shaft 602 to deflect through the clamping block 607, so that the scraper 605 connected to the plate frame 604 presses against the plate surface with a certain pressure to remove water stains from the plate surface. If the scraper 605 is made of rubber, it can adapt to certain board thickness fluctuations, is elastic and will not scratch the surface of the fiber cement board. At least one photoelectric switch 608 is installed at the top of the bracket 601. The wheel centering assembly 7 includes a side frame 701 bolted to the outer wall of the bracket 601, a cylinder 3 702 installed on the outer wall of the side frame 701, a T-shaped inverted seat 703 fixed to the piston rod of the cylinder 3 702, and a wheel frame 704 bolted to the bottom end of the T-shaped inverted seat 703. The length direction of the wheel frame 704 is parallel to the conveying direction of the double-chain rubber roller conveyor 4 and extends into the interior of the oven 5. Several rollers 705 are installed at equal intervals on the outer wall of the wheel frame 704 away from the side frame 701. When the board passes the photoelectric switch 608, the photoelectric switch 608 sends the workpiece signal to the central control box 10. The central control box 10 then instructs the double-sided squeegee assembly 6 and the wheel-type centering assembly 7 to operate. The cylinder 3 702 operates once according to the instruction. That is, the piston rod of the cylinder 3 702 pushes the T-shaped inverted seat 703, the wheel frame 704 and each roller 705 to move horizontally, so as to apply a component force pointing towards the center line to the board, so that the board is automatically aligned.

[0022] Example 5, based on Example 4, by Figure 17 , Figure 18 and Figure 19 As shown, one of the cotton roller oiling components 9 includes a U-shaped platform 901 fixed on the top wall of the oven 5, a cylinder 902 installed on the bottom wall of the U-shaped platform 901, a roller frame 903 fixed at the lower end of the piston rod of the cylinder 902, and a hollow oil outlet roller 905 rotatably installed inside the roller frame 903 via bearings. A sponge sleeve 906 is fixed on the outer circumference of the hollow oil outlet roller 905. A rotary joint 904 is fixed on one side of the roller frame 903. The rotating end of the rotary joint 904 is connected to the liquid inlet end of the hollow oil outlet roller 905. Taking the cotton roller type oiling component 9 on the top wall of the double-chain rubber roller conveyor 4 as an example, the cylinder 902 is controlled to work according to the thickness of the plate. The cylinder 902 drives the roller frame 903 and the hollow oil outlet roller 905 to move down until the plate can contact the sponge sleeve 906 when it passes through. The rotary joint 904 needs to be connected to the external oil supply equipment. The rotary joint 904 supplies the maintenance oil into the hollow oil outlet roller 905, and the oil seeps into the sponge sleeve 906 through the through holes on the outer wall of the hollow oil outlet roller 905. The sponge sleeve 906 absorbs and stores the oil. When the board passes between the upper and lower sponge sleeves 906, the oil in the sponge sleeves 906 is transferred to the surface of the board, forming a uniform oil film. Since the hollow oil roller 905 and the sponge sleeves 906 can rotate and are continuously connected to the external oil supply equipment through the rotary joint 904, the oil film is continuous and firm when the oil supply pressure is stable, which can reduce defects such as missed coating and smearing.

[0023] Working principle: Based on the specifications of the produced fiber cement boards, including thickness, length, and moisture content, the corresponding process parameters are retrieved from the central control box 10, or the brush roller speed of the double-sided dry brush cleaning machine 1, the spray pressure of the double-sided water washing machine 2, the heating temperature of the blower heating component 8, and the conveying speed of the board feeding machine 3 and the double-chain rubber roller conveyor 4 are manually input. After the parameters are set, the equipment is started. The upstream palletizer places single fiber cement boards at fixed intervals onto the roller conveyor line connected to the frontmost double-sided dry brush cleaning machine 1. During the dry brushing stage, at least two double-sided dry brush cleaning machines 1 sequentially brush the upper and lower surfaces of the board. Mechanical brushing removes most of the dry dust and release agent residue. During this process, the cleaning roller assembly 12 continuously cleans the dirt adhering to the surface of the lower roller of the double-sided dry brush cleaner 1. Each double-sided dry brush cleaner 1 and double-sided washing machine 2 is equipped with a board feeder 3 at its feeding end. The board feeder 3 can prevent the board from stopping or jamming in front of the brush roller due to insufficient thrust. If the board feeding speed is found to be uneven, the feeding pressure and speed of the board feeder 3 can be appropriately increased. After two rounds of dry brushing, large particulate pollutants on the surface of the fiber cement board have been basically removed. The spray pressure of each double-sided washing machine 2 can be adjusted separately through the central control box 10. The first double-sided washing machine 2 uses high pressure and a weakly alkaline cleaning agent to break down stubborn mold release agents. The second and third machines use lower pressure clean water for rinsing. After being thoroughly cleaned by the three double-sided washing machines 2, the surface contaminants of the board have been completely removed, but the board surface still carries a lot of water stains. The board is then conveyed to the feed end of the double-chain rubber roller conveyor 4 and passes sequentially through the double-sided squeegee assembly 6 and the wheel-type centering assembly 7. The clamping force of the double-sided squeegee assembly 6 needs to be adjusted in advance according to the thickness of the board to remove the water stains from the board surface. The wheel-type centering assembly 7 is matched with the width of the board to ensure the board... Before entering the drying oven 5, the board always moves along the center line of the conveyor to avoid deviation and uneven oiling. After the water stains are removed, the board enters the drying oven 5. Hot air is continuously blown onto the board surface by the blower heating component 8 until the board is dry. The completely dry and precisely centered fiber cement board reaches the upper and lower cotton roller oiling components 9. The oil supply and contact pressure with the board surface of the upper and lower cotton roller oiling components 9 can be controlled by the central control box 10 to print a layer of oil film on the corresponding board surface. The board surface is always kept in a uniformly moist state but without dripping oil. The qualified product is then sent to the next process by the double chain rubber roller conveyor 4. The double-sided dry brush sweeper 1, located at the front of the equipment, needs to be connected to a roller conveyor line. This roller conveyor line can be equipped with a spray pre-humidification chamber, which sprays room temperature water to moisten the dry dust and salt stains on the surface, softening and loosening them to prevent dust from flying and re-adhering during the subsequent cleaning stage. In addition, a dust removal device can be connected above the double-sided dry brush sweeper 1 to remove the dust generated by the double-sided dry brush sweeper 1 and the cleaning roller assembly 12 during operation.

[0024] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A fiber cement board dedicated cleaning and oiling machine, characterized in that, include; At least two double-sided dry brush sweepers (1) are connected in sequence and arranged in sequence along the conveying direction; The cleaning roller assembly (12) is disposed in the double-sided dry brush sweeper (1) and is used to continuously clean the lower roller body of the double-sided dry brush sweeper (1) during the dry brushing process; At least three double-sided washing machines (2) connected in sequence are arranged downstream of the double-sided dry brush cleaning machine (1) along the conveying direction; The plate feeder (3) is set at the feeding end of each double-sided dry brush cleaning machine (1) and the feeding end of each double-sided water washing machine (2) to convey the plate parts. A double-chain rubber roller conveyor (4) is located downstream of the three double-sided washing machines (2) and is used to receive and transport the cleaned plates. The feed end of the double-chain rubber roller conveyor (4) is equipped with a double-sided scraper assembly (6) for scraping off residual water stains on the upper and lower surfaces of the plates. Downstream of the double-sided scraper assembly (6) is a wheel-type centering assembly (7) for centering and aligning the plates. The oven (5) is installed on the frame of the double-chain rubber roller conveyor (4) and is located downstream of the wheel centering assembly (7). The outer wall of the oven (5) is equipped with a blower heating assembly (8). Two upper and lower cotton roller oiling components (9) are set on the outlet side of the oven (5). A central control box (10) is installed on one side of the double-chain rubber roller conveyor (4). The central control box (10) is electrically connected to the double-sided dry brush cleaner (1), the double-sided water washing machine (2), the plate feeder (3), the double-chain rubber roller conveyor (4), the double-sided scraper assembly (6), the wheel centering assembly (7), and the blower heating assembly (8).

2. The special cleaning and oiling machine for fiber cement board according to claim 1, characterized in that, The double-sided dry brush sweeper (1) includes a main frame (101), a lower brush roller (102), a synchronous belt rotation drive assembly (103), a lifting assembly (104), an upper brush roller (105), and a permanent magnet synchronous servo motor (106). The lower brush roller (102) is rotatably installed inside the main frame (101) at an upper position. The lifting assembly (104) is installed at the top of the main frame (101). The permanent magnet synchronous servo motor (106) is installed on the drive block of the lifting assembly (104). The upper brush roller (105) is fixed on the output shaft of the permanent magnet synchronous servo motor (106) and located diagonally above the lower brush roller (102). The synchronous belt rotation drive assembly (103) is located inside the main frame (101) at a lower position and is used to drive the lower brush roller (102) to rotate.

3. The special cleaning and oiling machine for fiber cement board according to claim 2, characterized in that, The cleaning roller assembly (12) includes a longitudinal beam frame (107) fixed at a lower position inside the main frame (101), a longitudinal shaft (1202) rotatably mounted at a higher position inside the main frame (101) via a bearing seat, and a swing frame (1203) fitted on the longitudinal shaft (1202). The side of the swing frame (1203) facing the lower brush roller (102) is integrally formed with a comb plate (1204). The top of the longitudinal beam frame (107) is hinged with two cylinders (1201) along the length direction of the longitudinal shaft (1202). The top of the piston rod of the cylinders (1201) is hinged to the swing frame (1203).

4. The special cleaning and oiling machine for fiber cement board according to claim 2, characterized in that, One of the plate feeders (3) includes a side platform (301) fixed on the outer wall of the feed side of the main frame (101), a second lifting assembly (302) installed on the side platform (301), a rubber roller (303) rotatably mounted on the drive block of the second lifting assembly (302) along the length of the first lower brush roller (102) via a bearing seat, and a support roller (304) rotatably mounted at a lower position inside the main frame (101). The support roller (304) is flush with the first lower brush roller (102). A geared motor unit (305) for driving the support roller (304) to rotate is installed on one side of the outer wall of the side platform (301).

5. The special cleaning and oiling machine for fiber cement board according to claim 2, characterized in that, One of the double-sided washing machines (2) includes a sub-frame (208) installed on the discharge side of the main frame (101), a second lower brush roller (201) rotatably installed inside the sub-frame (208) via a bearing seat, a sprocket rotation drive assembly (202) located on the outer wall of the sub-frame (208) and driving the two second lower brush rollers (201) to rotate together, and a third lifting assembly (203) installed on the sub-frame (208). An second upper brush roller (204) is rotatably installed on the drive block of the third lifting assembly (203). A double-pipe spray washing structure is provided on the left and right sides of the second upper brush roller (204). A dirt collection structure (11) is provided inside the sub-frame (208).

6. The special cleaning and oiling machine for fiber cement board according to claim 5, characterized in that, The dual-pipe spray washing structure consists of a U-shaped main pipe (206), two electrically controlled valves (207), and two L-shaped flushing pipes (205). The two L-shaped flushing pipes (205) are symmetrically arranged on the left and right sides of the upper brush roller (204). Each of the two L-shaped flushing pipes (205) has several downward-sloping nozzles (2051) installed at equal intervals along the axial direction. The electrically controlled valves (207) are installed at the liquid inlet end of the L-shaped flushing pipes (205), and the U-shaped main pipe (206) is installed at the liquid inlet end of the two electrically controlled valves (207).

7. A special cleaning and oiling machine for fiber cement boards according to claim 5, characterized in that, The sewage collection structure (11) includes a sewage tank (1101) fixed inside the sub-frame (208) and a T-flange pipe (1102) installed at the center of the bottom end of the sewage tank (1101).

8. A special cleaning and oiling machine for fiber cement boards according to claim 1, characterized in that, The double-sided scraper assembly (6) includes a bracket (601) fixed on the feed end of the frame of the double-chain rubber roller conveyor (4), two spaced short shafts (602) rotatably mounted on the inner wall of one side of the bracket (601), and two spaced long shafts (603) rotatably mounted on the inner wall of the other side of the bracket (601). A plate frame (604) is detachably mounted between the opposite ends of the short shafts (602) and long shafts (603) on the same horizontal plane. A scraper (605) is mounted at the bottom end of the plate frame (604). Two cylinders (606) with mirror symmetry are hinged on the inner wall of the bracket (601) on one side of the short shafts (602). A clamping block (607) is hinged to the piston rod end of the cylinder (606). The other end of the clamping block (607) and the short shaft (602) are fastened and fixed by a pin. At least one photoelectric switch (608) is mounted on the top of the bracket (601).

9. A special cleaning and oiling machine for fiber cement boards according to claim 8, characterized in that, The wheel centering assembly (7) includes a side frame (701) bolted to the outer wall of the bracket (601), a cylinder three (702) mounted on the outer wall of the side frame (701), a T-shaped inverted seat (703) fixedly connected to the piston rod of the cylinder three (702), and a wheel frame (704) bolted to the bottom end of the T-shaped inverted seat (703). The length direction of the wheel frame (704) is parallel to the conveying direction of the double-chain rubber roller conveyor (4) and extends into the interior of the oven (5). Several rollers (705) are evenly spaced on the outer wall of the wheel frame (704) away from the side frame (701).

10. A special cleaning and oiling machine for fiber cement boards according to claim 9, characterized in that, One of the said cotton roller oiling components (9) includes a U-shaped hanging platform (901) fixed on the top wall of the oven (5), a cylinder four (902) installed on the bottom wall of the U-shaped hanging platform (901), a roller frame (903) fixed at the lower end of the piston rod of the cylinder four (902), and a hollow oil outlet roller (905) rotatably installed inside the roller frame (903) via bearings. A sponge sleeve (906) is fixed on the outer circumference of the hollow oil outlet roller (905). A rotary joint (904) is fixed on one side of the roller frame (903), and the rotating end of the rotary joint (904) is connected to the liquid inlet end of the hollow oil outlet roller (905).

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