Precise regulation and control device for coating thickness of color-coated aluminum coil

Abstract

The invention provides a color-coated aluminum coil coating thickness precise regulation and control device which comprises a roller coater, a coating roller, a steering roller and a strip roller are installed on the roller coater, the strip roller is arranged at the bottom of the coating roller, a coating plate bin is installed on the roller coater, the coating plate bin is of an open structure and is arranged at the bottom of the strip roller, and the coating plate bin is connected with the roller coater. The bottom of the coating tray bin is connected to the roller coater through a lifting mechanism, and two symmetrical bubble-isolating filter screens are mounted in the coating tray bin; through the arrangement of the foam isolation filter screen and the stirring bin, the problem that pigment sinks to the bottom due to long-time deposition of the pigment in the coating disc is effectively solved, the pigment can be stirred at the same time, and the phenomenon that the pigment is not uniform due to foam attachment on the surface of the strip roller can be prevented. And through the design of a plurality of layers of stainless steel wire meshes, the bubble-isolating filter screen can efficiently filter bubbles in the coating and ensure that the pigment on the surface of the strip roller is uniformly attached, so that the stability of the coating thickness and the coating quality are improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of color-coated roll processing, in particular to a color-coated aluminum roll coating thickness precision control device. BACKGROUND

[0002] Color-coated aluminum roll, referred to as color-coated roll, is uniformly coated with color pigments on the surface of aluminum plate, which not only increases the aesthetic level of aluminum plate, but also increases the corrosion resistance of aluminum plate to a certain extent. The durability of color-coated plate is increased. The pigments on the surface of the color-coated roll are coated by roller coating process. The aluminum roll to be coated is unwound by an uncoiler, and a series of pretreatment steps such as degreasing, washing, polishing, re-washing, drying, passivation and re-drying are carried out on the aluminum roll, and then painting is carried out. In the painting stage, the roller coater is used to uniformly coat the surface of the aluminum roll under the action of the coating roller, and then drying is carried out to make the coating solidify and adhere to the aluminum roll. After drying, proper cooling treatment is carried out for subsequent further processing and sales.

[0003] In the process of painting, the surface coating thickness of the color-coated roll is affected by the distance between the coating rollers. During the coating process, if the coating is not stirred evenly during the coating process, solid sedimentation will occur, resulting in a decrease in the amount of pigment during roller coating. The adhesion of the pigment on the surface of the color-coated roll is low, resulting in a thin topcoat. On the one hand, the paint is diluted, and the coating color is dull and lacks luster. On the other hand, it also leads to the fact that the thickness of the surface coating of the color-coated roll does not meet the standard. The pigment in the coating pan will cause the stirred coating to sediment for a long time. If the pigment in the coating pan is stirred during the running of the material roller, the surface of the coating in the coating pan will appear foam during the stirring process. The foam will adhere to the surface of the material roller, resulting in uneven adhesion of the pigment on the surface of the material roller. This not only affects the thickness of the coating, but also causes uneven coating.

[0004] Therefore, the present application provides a color-coated aluminum roll coating thickness precision control device to solve the above problems. SUMMARY

[0005] In order to solve the above technical problems, the present application provides a color-coated aluminum roll coating thickness precision control device to solve the problem that foam will adhere to the surface of the material roller, resulting in uneven adhesion of the pigment on the surface of the material roller, which not only affects the thickness of the coating, but also causes uneven coating.

[0006] The utility model provides a kind of color-coated aluminium coil coating thickness precision control device, including roll coater, coating roll, steering roll and tape roll are installed on the roll coater, the tape roll is arranged at the bottom of coating roll, coating disc bin is installed on the roll coater, the coating disc bin is open structure, and is arranged at the bottom of tape roll, the bottom of coating disc bin is connected on roll coater by lifting mechanism, two mutually symmetrical bubble traps are installed in the coating disc bin, the bubble trap is respectively arranged at the both ends of tape roll, stirring bin is respectively arranged between the both side ends of bubble trap and coating disc bin, two transmission channels are connected on the stirring bin, stirring spindle is rotatably connected in the stirring bin, one end of stirring spindle is movably penetrated through the bottom of stirring bin and is rotatably connected on the inner wall of coating disc bin away from the opening, liquid extraction hole is opened in the bottom of coating disc bin, communication main pipe is installed on the surface of liquid extraction hole, two shunt pipes are connected on the communication main pipe, two water pumps are installed on the bottom of coating disc bin, the water inlet end of water pump is respectively connected on shunt pipe, and the water outlet end of water pump is respectively connected with liquid storage pipe, the both ends of liquid storage pipe are respectively connected with flow guide pipe, the flow guide pipe is respectively communicated with the transmission channel of same side, the both ends of steering roll are sleeved with driving shaft sleeve, hydraulic rod is installed on the rack of roll coater and is fixedly connected on the surface of driving shaft sleeve.

[0007] Further, the stirring bin is a cylindrical hollow structure with an open top, a plurality of filter holes are formed in the side of the stirring bin away from the top, the transmission channels are symmetrically arranged along the center of the stirring bin, one end of the transmission channel is mounted on the stirring bin and communicates with the stirring bin, the other end of the transmission channel is mounted on the side wall of the coating disc bin, and the bottom of the stirring bin is fixedly connected to the two side inner walls of the coating disc bin by the mounting plate.

[0008] Further, one end of the stirring spindle extending into the stirring bin is provided with a plurality of guide scrapers, the guide scrapers are arranged in an array along the circumference of the stirring spindle, the guide scrapers are arc-shaped structures, and the other end of the stirring spindle is provided with a plurality of stirring paddles, the stirring paddles are conical stirring paddles.

[0009] Further, limit rails are respectively installed on the two sides of the coating disc bin, a plurality of layers of stainless steel wire meshes are installed on the surface of the bubble trap, plug-in sliding blocks are respectively installed at the two ends of the bubble trap, the plug-in sliding blocks are respectively slidably inserted into the surface of the limit rail, the bubble trap is arranged between the two opposite inner walls in the coating disc bin and at the opening of the coating disc bin.

[0010] Further, limit rail frames are installed on the rack of the roll coater, the two sides of the driving shaft sleeve are respectively slidably connected to the inner walls of the limit rail frames, and the piston rod of the hydraulic rod movably penetrates through the limit rail frame and is fixedly connected to the surface of the driving shaft sleeve.

[0011] Further, the lifting mechanism comprises a linkage shaft, both ends of the linkage shaft are sleeved with driving gears respectively, one side of the driving gear is provided with a lifting push rod respectively, both ends of the linkage shaft penetrate through the rack of the roll coater and are rotationally connected with the rack through bearings, one end of the linkage shaft is provided with a transmission worm gear, the surface of the transmission worm gear is engaged with a transmission worm, and one end of the lifting push rod is installed at the bottom of the paint disc bin.

[0012] Further, the transmission worm is installed on the rack of the roll coater through a bearing seat, and one end of the transmission worm is provided with a hand-held roller.

[0013] Further, the surface of the lifting push rod is sleeved with a anastomosis block, the driving gear is movably arranged in the anastomosis block, and an adjusting tooth groove is formed in one side surface of the lifting push rod, and the teeth on the driving gear are engaged with the adjusting tooth groove.

[0014] Further, the anastomosis block is installed on the inner walls on both sides of the rack of the roll coater, and the lifting push rods are arranged in parallel on one side of the rack.

[0015] Compared with the prior art, the present application has the following advantages: 1、The present application effectively avoids the problem of pigment sedimentation at the bottom of the paint disc caused by long-term deposition of pigment in the paint disc by providing a bubble separation filter screen and a stirring bin, which can simultaneously stir the pigment and prevent uneven distribution of pigment on the surface of the material carrying roller caused by foam adhesion. The bubble separation filter screen can efficiently filter out bubbles in the paint through the design of multiple layers of stainless steel wire mesh, ensuring uniform adhesion of pigment on the surface of the material carrying roller, thereby improving the stability of coating thickness and the quality of coating.

[0016] 2、In the present application, the combination of the stirring main shaft, the guide scraper and the stirring paddle, together with the transmission channels designed on both sides, can automatically drive the stirring paddle using the thrust direction of the water flow, thereby increasing the mixing effect of the paint. The guide scraper adopts an arc-shaped structure to guide the flow of paint during stirring, while the conical stirring paddle stirs the pigment at the bottom of the stirring area, making the distribution of pigment particles more uniform and reducing the possibility of solid sedimentation. The reasonable layout of the shunt pipe and the flow guide pipe ensures the smoothness of the paint during transmission, enabling the pigment in the middle of the paint disc bin to be transported to both sides and converted.

[0017] 3、The present application further introduces a lifting mechanism to achieve flexible adjustment of the height of the paint disc bin, which can better clean and maintain the stirring area and the transfer area in the paint disc bin. The meshing connection design of the transmission worm gear and the transmission worm makes the operation more convenient and precise.

[0018] 4. In this invention, the hydraulic rod and the drive bushing work together to adjust the horizontal height of the steering roller. At the same time, the design of the limiting rail frame prevents the drive bushing from shifting during operation, thereby improving the operating accuracy and reliability of the entire device. The adjustable height steering roller increases the precision of coating thickness control. Attached Figure Description

[0019] Figure 1 This invention is three-dimensional. Figure 1 ; Figure 2 This invention is three-dimensional. Figure 2 ; Figure 3 This is a perspective view of the bubble-proof filter screen of the present invention; Figure 4 This is a perspective view of the diversion tube of the present invention; Figure 5 This is a perspective view of the mixing chamber of the present invention; Figure 6 This is a perspective view of the paint storage tray of the present invention; Figure 7 This is a perspective view of the lifting mechanism of the present invention.

[0020] In the picture: 1. Roller coater; 2. Steering roller; 3. Paint hopper; 4. Material conveyor roller; 5. Lifting mechanism; 501. Matching block; 502. Linkage shaft; 503. Lifting push rod; 504. Transmission worm gear; 505. Transmission worm; 506. Drive gear; 6. Water pump; 7. Connecting main pipe; 8. Coating roller; 9. Foam-proof filter screen; 10. Limiting rail; 11. Mixing chamber; 12. Conveying channel; 13. Guide pipe; 14. Liquid extraction hole; 15. Insertion slider; 16. Guide scraper; 17. Liquid storage pipe; 18. Mounting plate; 19. Mixing paddle; 20. Diverter pipe; 21. Mixing main shaft; 22. Drive bushing; 23. Limiting rail frame; 24. Hydraulic rod. Detailed Implementation

[0021] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of the invention.

[0022] like Figures 1-7As shown, this invention provides a precision control device for the coating thickness of color-coated aluminum coils, including a roller coater 1. The roller coater 1 is equipped with a coating roller 8, a steering roller 2, and a conveyor roller 4. The conveyor roller 4 is located at the bottom of the coating roller 8. A paint hopper 3 is installed on the roller coater 1. The paint hopper 3 has an open structure and is located at the bottom of the conveyor roller 4. The bottom of the paint hopper 3 is connected to the roller coater 1 via a lifting mechanism 5. Two symmetrical bubble-blocking filters 9 are installed inside the paint hopper 3, respectively located at both ends of the conveyor roller 4. A mixing chamber 11 is respectively provided between the bubble-blocking filters 9 and the two ends of the paint hopper 3. Two conveying channels 12 are connected to the mixing chamber 11. A mixing main shaft 21 is rotatably connected inside the mixing chamber 11. One end of the main shaft 21 extends through the bottom of the mixing chamber 11 and is rotatably connected to the inner wall of the coating silo 3 at the end away from the opening. The bottom of the coating silo 3 is provided with a liquid extraction hole 14. A connecting main pipe 7 is installed on the surface of the liquid extraction hole 14. Two branch pipes 20 are connected to the connecting main pipe 7. Two water pumps 6 are installed at the bottom of the coating silo 3. The inlet end of the water pump 6 is connected to the branch pipe 20, and the outlet end of the water pump 6 is connected to the storage pipe 17. The two ends of the storage pipe 17 are connected to the guide pipe 13. The guide pipe 13 is connected to the conveying channel 12 on the same side. The two ends of the steering roller 2 are fitted with drive shaft sleeves 22. A hydraulic rod 24 is installed on the frame of the roller coating machine 1 and is fixedly connected to the surface of the drive shaft sleeve 22.

[0023] In one embodiment of the present invention, the mixing chamber 11 is a cylindrical hollow structure with an open top. Multiple filter holes are provided on the side of the mixing chamber 11 away from the top. The conveying channel 12 is symmetrically arranged along the center of the mixing chamber 11. One end of the conveying channel 12 is installed on the mixing chamber 11 and communicates with the inside of the mixing chamber 11. The other end of the conveying channel 12 is installed on the side wall of the paint tray 3. The bottom of the mixing chamber 11 is fixedly connected to the inner walls of both sides of the paint tray 3 by the mounting plate 18.

[0024] The conveying channel 12 establishes a connection between the guide pipe 13 and the mixing chamber 11. The guide pipe 13 connects the conveying channel 12 and the liquid storage pipe 17. The pigment liquid drawn from the main pipe 7 is distributed through the diversion pipe 20 by the water pump 6 and then transported to the mixing chamber 11. After being filtered and stirred in the mixing chamber 11, it is then coated on the surface of the conveying roller 4. The main purpose is to transport the pigment in the middle of the paint hopper 3 to both ends of the paint hopper 3. During the conveying process, the paint is stirred and filtered. When the conveying roller 4 is running, it prevents the pigment from standing for a long time, which would cause the pigment to sink to the bottom and become uneven. During use, the pigment is circulated and transported.

[0025] In one embodiment of the present invention, a plurality of guide scrapers 16 are installed at one end of the stirring main shaft 21 extending into the stirring chamber 11. The guide scrapers 16 are arranged in a circumferential array along the stirring main shaft 21 and have an arc-shaped structure. A plurality of stirring paddles 19 are installed at the other end of the stirring main shaft 21. The stirring paddles 19 are conical stirring paddles.

[0026] Pigment enters the mixing chamber 11 through the conveying channel 12, and the pigment pushes the arc-shaped concave end of the guide scraper 16, causing the guide scraper 16 to move. The mixing main shaft 21 rotates in the mixing chamber 11. After being filtered through the filter holes, the pigment enters the paint tray 3. When the mixing main shaft 21 is driven to rotate by the guide scraper 16, the conical mixing paddle at the bottom also rotates. The mixing paddle 19 stirs the pigment at both ends of the paint tray 3, increasing the degree of mixing. The conical mixing paddle reduces the foam generated during the mixing process.

[0027] In one embodiment of the present invention, limit rails 10 are respectively installed on both sides of the paint hopper 3, and multiple layers of stainless steel wire mesh are installed on the surface of the bubble-proof filter screen 9. Insertion sliders 15 are respectively installed at both ends of the bubble-proof filter screen 9. The insertion sliders 15 are respectively slidably inserted into the surface of the limit rails 10. The bubble-proof filter screen 9 is disposed between two opposite inner walls inside the paint hopper 3 and is disposed at the opening of the paint hopper 3.

[0028] The bubble-proof filter 9 divides the paint hopper 3 into a mixing zone and a transfer zone. The mixing zones are located at both ends of the paint hopper 3, and the mixing chamber 11 is located in the mixing zone. The conveyor roller 4 rotates in the transfer zone through the drive mechanism. The pigment is evenly covered on the surface of the conveyor roller 4. The liquid extraction hole 14 at the bottom transfers the pigment from the transfer zone to the mixing zone. After being mixed by the mixing paddle 19, the bubble-proof filter 9 adopts a stainless steel wire woven structure, which has the function of filtering liquid. It can block the foam generated during the mixing process in the mixing zone. The multi-layer stainless steel wire mesh is more resistant to high temperature and is not easily deformed. The foam attached to the surface of the pigment is blocked by the bubble-proof filter 9 and prevented from entering the transfer zone.

[0029] In one embodiment of the present invention, a limiting rail frame 23 is installed on the frame of the roller coating machine 1, and the two sides of the drive shaft sleeve 22 are slidably connected to the inner wall of the limiting rail frame 23 respectively. The piston rod of the hydraulic rod 24 moves through the limiting rail frame 23 and is fixedly connected to the surface of the drive shaft sleeve 22.

[0030] The limiting rail frame 23 is set at both ends of the steering roller 2 to adjust the height of both ends of the steering roller 2. The hydraulic rod 24 is used to drive and adjust the distance between the steering roller 2 and the coating roller 8. The hydraulic rod 24 can be adjusted more precisely according to the predetermined requirements, and the control of the coating thickness is more precise.

[0031] In one embodiment of the present invention, the lifting mechanism 5 includes a linkage shaft 502, with drive gears 506 respectively sleeved at both ends of the linkage shaft 502. Lifting push rods 503 are respectively provided on one side of the drive gears 506. Both ends of the linkage shaft 502 pass through the frame of the roller coating machine 1 and are rotatably connected to the frame through bearings. A transmission worm gear 504 is installed at one end of the linkage shaft 502, and a transmission worm 505 is meshed with the surface of the transmission worm gear 504. One end of the lifting push rod 503 is installed at the bottom of the paint hopper 3.

[0032] In one embodiment of the present invention, the transmission worm gear 505 is mounted on the frame of the roller coating machine 1 via a bearing seat, and a hand crank is installed at one end of the transmission worm gear 505.

[0033] The hand crank wheel drives the transmission worm 505 to rotate, and the transmission worm 505 can then drive the transmission worm wheel 504.

[0034] In one embodiment of the present invention, a matching block 501 is sleeved on the surface of the lifting push rod 503, and a drive gear 506 is movably disposed in the matching block 501. An adjustment tooth groove is provided on one side of the lifting push rod 503, and the teeth on the drive gear 506 mesh with the adjustment tooth groove.

[0035] The mating block 501 wraps around the surface of the lifting push rod 503 and the drive gear 506, which makes the transmission connection between the two more precise. When the drive gear 506 rotates, it can drive the lifting push rod 503 to slide up and down along the mating block 501, thereby driving the adjustment of the overall height of the paint hopper 3.

[0036] In one embodiment of the present invention, the matching block 501 is installed on the inner walls of both sides of the frame of the roller coating machine 1, and the lifting push rod 503 is arranged parallel to one side of the frame.

[0037] The outer wall of the matching block 501 is fixed to prevent the lifting push rod 503 from shaking during lifting.

[0038] During roller coating, water pump 6 is started, and water pump 6 transfers pigment from the middle of paint tray 3 to mixing chamber 11. Then, guide scraper 16 in mixing chamber 11 drives mixing spindle 21, and mixing paddle 19 is used to stir, increasing the degree of pigment stirring. Pigment is exchanged with pigment in transfer area through bubble filter 9. By rotating the hand crank, the transmission worm 505 is driven, which in turn drives the transmission worm wheel 504 to rotate, thereby driving the gear 506 to push the lifting push rod 503, adjusting the height of the paint hopper 3, and cleaning the mixing chamber 11.

[0039] The embodiments of the present invention are given for the purposes of illustration and description. Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A precision control device for coating thickness of color-coated aluminum coils, comprising a roller coater (1), wherein the roller coater (1) is equipped with a coating roller (8), a steering roller (2), and a conveyor roller (4), the conveyor roller (4) being disposed at the bottom of the coating roller (8), and a paint hopper (3) being installed on the roller coater (1), the paint hopper (3) being an open structure and disposed at the bottom of the conveyor roller (4), characterized in that, The bottom of the paint silo (3) is connected to the roller coating machine (1) via a lifting mechanism (5). Two symmetrical bubble-proof filters (9) are installed inside the paint silo (3). The bubble-proof filters (9) are respectively set at both ends of the conveying roller (4). A mixing chamber (11) is respectively set between the bubble-proof filters (9) and the two ends of the paint silo (3). Two conveying channels (12) are connected to the mixing chamber (11). A mixing main shaft (21) is rotatably connected inside the mixing chamber (11). One end of the mixing main shaft (21) moves through the bottom of the mixing chamber (11) and is rotatably connected to the inner wall of the paint silo (3) at the end away from the opening. A drawer is opened at the bottom of the paint silo (3). Liquid hole (14), the surface of the liquid extraction hole (14) is equipped with a connecting main pipe (7), the connecting main pipe (7) is connected with two branch pipes (20), the bottom of the paint silo (3) is equipped with two water pumps (6), the water inlet end of the water pump (6) is connected to the branch pipe (20) respectively, and the water outlet end of the water pump (6) is connected to the liquid storage pipe (17) respectively. The two ends of the liquid storage pipe (17) are connected to the guide pipe (13) respectively, and the guide pipe (13) is connected to the conveying channel (12) on the same side respectively. The two ends of the steering roller (2) are fitted with drive shaft sleeves (22), and the frame of the roller coating machine (1) is equipped with a hydraulic rod (24) and fixedly connected to the surface of the drive shaft sleeve (22).

2. The precision control device for coating thickness of color-coated aluminum coils as described in claim 1, characterized in that, The mixing chamber (11) is a cylindrical hollow structure with an open top. Multiple filter holes are provided on the side of the mixing chamber (11) away from the top. The conveying channel (12) is symmetrically arranged along the center of the mixing chamber (11). One end of the conveying channel (12) is installed on the mixing chamber (11) and communicates with the inside of the mixing chamber (11). The other end of the conveying channel (12) is installed on the side wall of the paint tray (3). The bottom of the mixing chamber (11) is fixedly connected to the inner walls of both sides of the paint tray (3) by the mounting plate (18).

3. The precision control device for coating thickness of color-coated aluminum coils as described in claim 1, characterized in that, The stirring spindle (21) extends into the stirring chamber (11) and is equipped with a plurality of guide scrapers (16). The guide scrapers (16) are arranged in a circumferential array along the stirring spindle (21). The guide scrapers (16) are arc-shaped. The other end of the stirring spindle (21) is equipped with a plurality of stirring paddles (19). The stirring paddles (19) are conical stirring paddles.

4. The precision control device for coating thickness of color-coated aluminum coils as described in claim 1, characterized in that, Limit rails (10) are installed on both sides of the paint hopper (3). The surface of the bubble-proof filter (9) is covered with multiple layers of stainless steel wire mesh. Insertion sliders (15) are installed at both ends of the bubble-proof filter (9). The insertion sliders (15) slide into the surface of the limit rails (10). The bubble-proof filter (9) is set between two opposite inner walls inside the paint hopper (3) and at the opening of the paint hopper (3).

5. The precision control device for coating thickness of color-coated aluminum coils as described in claim 1, characterized in that, The roller coating machine (1) is equipped with a limiting rail frame (23). The two sides of the drive bushing (22) are slidably connected to the inner wall of the limiting rail frame (23). The piston rod of the hydraulic rod (24) moves through the limiting rail frame (23) and is fixedly connected to the surface of the drive bushing (22).

6. The precision control device for coating thickness of color-coated aluminum coils as described in claim 1, characterized in that, The lifting mechanism (5) includes a linkage shaft (502), with drive gears (506) sleeved at both ends of the linkage shaft (502). Lifting push rods (503) are respectively provided on one side of the drive gears (506). Both ends of the linkage shaft (502) pass through the frame of the roller coating machine (1) and are rotatably connected to the frame through bearings. A transmission worm gear (504) is installed at one end of the linkage shaft (502), and a transmission worm (505) is meshed with the surface of the transmission worm gear (504). One end of the lifting push rod (503) is installed at the bottom of the paint silo (3).

7. The precision control device for coating thickness of color-coated aluminum coils as described in claim 6, characterized in that, The transmission worm (505) is mounted on the frame of the roller coating machine (1) via a bearing seat, and a hand crank is installed at one end of the transmission worm (505).

8. The precision control device for coating thickness of color-coated aluminum coils as described in claim 6, characterized in that, The lifting push rod (503) has a matching block (501) sleeved on its surface. The drive gear (506) is movably disposed in the matching block (501). An adjustment tooth groove is provided on one side of the lifting push rod (503). The teeth on the drive gear (506) mesh with the adjustment tooth groove.

9. The precision control device for coating thickness of color-coated aluminum coils as described in claim 8, characterized in that, The matching block (501) is installed on the inner walls of both sides of the frame of the roller coating machine (1), and the lifting push rod (503) is arranged parallel to one side of the frame.

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