Strip steel roll coating machine and roll coating method

Abstract

The invention relates to the technical field of roller coating machines, and provides a strip steel roller coating machine and a roller coating method.The strip steel roller coating machine comprises an installation machine table, a bottom side roller coating roller body and a top side roller coating roller body are rotationally arranged at the top of the installation machine table, and first drying equipment is arranged on one side of the bottom side roller coating roller body; a first drying device is arranged on one side of the top side roll coating roller body, a second drying device is arranged on the other side of the top side roll coating roller body, and a strip steel winding and unwinding structure used for conducting unwinding operation and winding operation on strip steel is arranged on one side of the mounting machine table. A driving conveying shaft used for moving strip steel and a plurality of guiding conveying shafts are arranged in the conveying box body, and a steering conveying mechanism is arranged on the other side of the top of the installation machine table. By means of the technical scheme, the problem that in the prior art, when a roll coating machine conducts roll coating operation on strip steel, efficiency is poor or using limitation is large is solved.

Description

Technical Field

[0001] Embodiments of the present invention relate to the technical field of roll coating machines, and more specifically, to a strip roll coating machine and a roll coating method. Background Art

[0002] A roll coating machine is a technical device in the prior art for roll coating corresponding coatings on the surface of metal sheets. The working principle of the roll coating machine is that during the horizontal transportation of the metal sheet, the coating is added to the coating roller, and after the coating roller contacts the roll coating end face of the metal sheet, the coating is roll coated on the surface of the metal sheet to complete the roll coating operation of the metal sheet.

[0003] Strip steel is a production raw material for various common steel structures. After the strip steel is rolled and formed, according to the actual production requirements of the subsequent strip steel and different usage scenarios, for the purpose of improving the corrosion resistance, protection, and insulation of the strip steel, the roll coating operation is usually carried out on both sides of the strip steel. In the working process of the roll coating machine in the prior art, the coating is usually added to the surface of the coating roller from top to bottom, and then the coating roller is brought into contact with one end face of the strip steel, and then the coating is applied to the end face of the strip steel. This will result in that when carrying out a thorough coating operation on the strip steel, usually two coating operations are carried out on the strip steel or two sets of coating adding structures and coating roller structures are prepared to carry out the roll coating operation on the strip steel. For the above two methods, the first one is relatively cumbersome and affects the efficiency of roll coating the strip steel, and the second method will increase the supporting structure of the entire roll coating machine and increase the floor area of the entire machine. Summary of the Invention

[0004] To overcome the above defects, embodiments of the present invention provide a strip roll coating machine and a roll coating method, which solve the technical problems of poor efficiency or large usage limitations of the roll coating machine in the prior art when carrying out the roll coating operation on strip steel.

[0005] A strip roll coating machine provided by the present invention includes an installation machine table. A bottom-side roll coating roller body and a top-side roll coating roller body are rotatably provided on the top of the installation machine table. A first drying device is provided on one side of the bottom-side roll coating roller body, and a second drying device is provided on the other side of the top-side roll coating roller body. A strip steel winding and unwinding structure for carrying out the unwinding operation and winding operation on the strip steel is provided on one side of the installation machine table. It further includes: Transport box body, the transport box body is fixedly connected to one side of the top of the installation machine table. A driving transport shaft and a plurality of guiding transport shafts for moving the strip steel are arranged in the transport box body. A steering transport mechanism is arranged on the other side of the top of the installation machine table. The strip steel is used to pass through the strip steel winding and unwinding structure, the transport box body, the bottom side roller coating roller body, the first drying device, the steering transport mechanism, the top side roller coating roller body and the second drying device in sequence, and then returns to the strip steel winding and unwinding structure after passing through the transport box body again; Coating injection mechanism, a coating injection mechanism for injecting roller coating is arranged between the bottom side roller coating roller body and the top side roller coating roller body.

[0006] In order to realize the transportation of the strip steel, further, a rotating bracket is fixedly connected to the inner top wall of the transport box body. The driving transport shaft is rotatably connected in the rotating bracket. A plurality of fixed brackets are fixedly connected to the inner bottom wall of the transport box body. The guiding transport shaft is rotatably connected in the fixed bracket. A strip steel pressing assembly is arranged between the rotating bracket and the driving transport shaft.

[0007] In order to move the strip steel in a cycle, further, a feed port for the uncoated strip steel to enter is opened on the lower side of one end of the transport box body facing the strip steel winding and unwinding structure. An outlet for the fully coated strip steel to move out is opened on the upper side of one end of the transport box body facing the strip steel winding and unwinding structure. An inlet for the strip steel after coating to enter the transport box body is also opened on the top of the transport box body.

[0008] In order to perform roller coating operations on both sides of the strip steel, further, two installation racks are fixedly connected to the installation machine table. The bottom side roller coating roller body and the top side roller coating roller body are both rotatably arranged on the top of the corresponding installation rack. A strip steel lifting assembly is arranged on the inner bottom of the installation rack.

[0009] In order to adjust the conveying direction of the strip steel, further, the steering transport mechanism includes a steering rack, the steering rack is fixedly connected to the installation machine table. Moving chambers are arranged on both the upper and lower sides of the steering rack. Steering drive shafts are rotatably arranged on one side of the inner walls of the two moving chambers close to each other. Among them, strip steel lifting assemblies are also arranged in the two moving chambers corresponding to the steering drive shafts.

[0010] In order to apply coating to the surfaces of the bottom-side roll coating roller body and the top-side roll coating roller body, further, the coating injection mechanism includes a uniform injection assembly and an installation groove frame. The uniform injection assembly is arranged at the top of the installation machine frame. The installation groove frame is arranged on the installation machine table. An injection pipeline is arranged in the installation groove frame. A flexible surface is arranged at the top of the injection pipeline. A coating extrusion assembly is arranged between the flexible surface and the installation groove frame. Among them, a plurality of injection valve pipes are communicated between the injection pipeline and the uniform injection assembly located on the upper side. Two feeding valve pipes are communicated between both sides of the injection pipeline and the uniform injection assembly located on the lower side. The second drying device is located between the two feeding valve pipes.

[0011] In order to uniformly apply the coating to the bottom-side roll coating roller body and the top-side roll coating roller body, further, the uniform injection assembly includes a feeding hopper. The feeding hopper is fixedly connected to the top of the installation machine frame. A feeding cylinder body is communicated with the top of the feeding hopper. The injection valve pipes and the feeding valve pipes are respectively communicated with the corresponding feeding cylinder bodies. Among them, the bottom of the feeding hopper is set as a slope surface. A slope-shaped part is fixedly connected in the feeding hopper. A discharge port is opened at the bottom of the feeding hopper. A plurality of discharge heads are communicated with the bottom of the feeding cylinder body. The discharge ends of the discharge heads face the slope-shaped part.

[0012] In order to make the strip move upward along with the driving conveying shaft, further, the strip extrusion assembly includes a sliding groove frame. The sliding groove frame is fixedly connected to the inner bottom wall of the rotating bracket. A moving groove body is slidably connected in the sliding groove frame. An extrusion roller body is rotatably connected in the moving groove body. A spring damper is arranged between the moving groove body and the inner wall of the sliding groove frame for conveying the strip between the driving conveying shaft and the extrusion roller body into the discharge port.

[0013] In order to make the strip fully contact with the roll coating roller body or the steering drive shaft, further, the strip lifting assembly includes a support groove frame. The support groove frame is fixedly connected to the installation machine frame or the steering machine frame. A sliding groove body is slidably connected in the support groove frame. An elastic bending piece is arranged between the sliding groove body and the inner wall of the support groove frame. A top material roller body is rotatably connected in the sliding groove body.

[0014] A strip roll coating method includes the following steps: Step 1, convey the strip: Fix the uncoated strip on the strip winding and unwinding structure, unwind the strip, move the strip into the conveying box body through the feed port, and make the driving conveying shaft and the guiding conveying shaft convey the strip. Step 2, roll coat the strip: Input the strip into the installation machine frame located at the bottom side, and use the bottom-side roll coating roller body to perform a roll coating operation on the end face of the strip facing the upper side. Step 3. Dry the strip: The strip after roll coating is continuously conveyed into the first drying device. After the coating on the strip surface is dried, the strip is conveyed to one side of the turning conveying mechanism; Step 4. Turn the strip: The strip is input onto the turning conveying mechanism, and the strip is moved back in the direction of the strip pay-off and rewind structure; Step 5. Secondarily roll coat the strip: The strip is conveyed into the installation rack located on the top side. At this time, the end face of the strip that has not undergone roll coating operation faces upward, and the end face of the strip is roll coated by the top-side roll coating roller body; Step 6. Secondarily dry the strip: The strip is continuously conveyed into the second drying device to dry the strip; Step 7. Finally convey the strip: The strip is re-input into the conveying box body, and finally the strip is conveyed to the corresponding strip pay-off and rewind rack to wind the strip after double-sided roll coating.

[0015] The beneficial effects of the embodiments of the present invention are as follows: In the present invention, when it is necessary to perform roll coating operations on both sides of the strip, first unwind the strip from the strip pay-off and rewind structure, pass the strip through the conveying box body and transmit it between the driving conveying shaft and the guiding conveying shaft, so that the strip first passes through the installation rack on the bottom side and is roll coated by the bottom-side roll coating roller body, so that one end face of the strip first undergoes roll coating operation. Then the strip is conveyed into the first drying device. After the coating on the strip surface is dried, through the turning conveying mechanism, the strip is conveyed back in the direction of the strip pay-off and rewind structure, so that the strip is turned over and then continues to enter another installation rack, so that the end face of the strip that has not been roll coated is moved to the bottom of the top-side roll coating roller body. Then, after the other end face of the strip undergoes roll coating operation, the strip enters the second drying device to continue drying. Finally, after the strip enters the conveying box body, it is re-conveyed to the strip pay-off and rewind structure for winding. By adjusting the movement path of the strip, on the premise of using a set of coating injection mechanisms, the roll coating operations on both end faces of the strip are completed, optimizing the roll coating operation efficiency of the strip and saving the floor space of the overall equipment more. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following will briefly introduce the drawings required for description in the embodiments of the present invention. Obviously, the following described drawings are only some exemplary embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the content of the exemplary embodiments of the present invention and these drawings.

[0017] Figure 1 It is a schematic structural diagram of the whole of the present invention; Figure 2Schematic structural diagram of the cooperation among the first drying device, the second drying device, the strip steel winding and unwinding structure and the conveying box body in the present invention; Figure 3 Schematic structural diagram of a partial cross-section of the cooperation among the conveying box body, the driving conveying shaft, the guiding conveying shaft and the sliding groove frame in the present invention; Figure 4 Schematic plan view of a partial cross-section of the cooperation among the driving conveying shaft, the rotating bracket, the sliding groove frame and the moving groove body in the present invention; Figure 5 Schematic structural diagram of a partial cross-section of the cooperation among the steering frame, the moving chamber, the steering drive shaft and the top feeding roller body in the present invention; Figure 6 Schematic structural diagram of a partial cross-section of the cooperation among the installation frame, the bottom side coating roller body, the top side coating roller body, the first drying device and the second drying device in the present invention; Figure 7 Schematic plan view of the coating injection mechanism in the present invention; Figure 8 For the present invention Figure 7 Schematic diagram of the enlarged partial structure at position A in the present invention; Figure 9 For the present invention Figure 7 Schematic diagram of the enlarged partial structure at position B in the present invention.

[0018] In the figure: 1. Installation machine table; 2. Bottom side coating roller body; 3. Top side coating roller body; 4. First drying device; 5. Second drying device; 6. Strip steel winding and unwinding structure; 7. Conveying box body; 8. Driving conveying shaft; 9. Guiding conveying shaft; 10. Rotating bracket; 11. Fixed bracket; 12. Feed inlet; 13. Discharge outlet; 14. Inlet; 15. Installation frame; 16. Steering frame; 17. Moving chamber; 18. Steering drive shaft; 19. Installation groove frame; 20. Injection pipeline; 21. Flexible surface; 22. Injection valve pipe; 23. Feeding valve pipe; 24. Feeding hopper; 25. Feeding cylinder body; 26. Slope-shaped part; 27. Discharge port; 28. Discharge head; 29. Sliding groove frame; 30. Moving groove body; 31. Spring damper; 32. Support groove frame; 33. Sliding groove body; 34. Elastic bending piece; 35. Top feeding roller body; 36. Strip steel winding and unwinding rack; 37. First driving motor; 38. First gear box; 39. Second driving motor; 40. Third driving motor; 41. Second gear box; 42. Rotating groove frame; 43. Rotating shaft; 44. Fourth driving motor; 45. Arc-shaped extrusion body. Detailed implementation manners The following further elaborates on the present invention in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are merely for explaining the present invention and not for limiting the present invention.

[0019] For the sake of simplicity of the drawings, only the parts related to the disclosure are schematically shown in each drawing, and they do not represent the actual structure of the product as a whole. In addition, for the sake of simplicity and easy understanding of the drawings, among the components with the same structure or function in some drawings, only one of them is schematically shown, or only one of them is labeled. In this text, "one" not only means "only this one", but also can mean "more than one", and "several" includes "two" and "more than two".

[0020] In this text, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", and "link" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "underneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.

[0022] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left" and "right" are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of description and simplifying the operation, rather than indicating or implying that the device or component referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention.

[0023] In addition, in the description of this application, the terms "first", "second", etc. are only used for distinguishing descriptions, and cannot be understood as indicating or implying relative importance.

[0024] Example 1, as Figures 1 to 9As shown in the figure, the present invention discloses a strip roll coater, which includes an installation machine table 1. A bottom-side roll coating roller body 2 and a top-side roll coating roller body 3 are rotatably arranged on the top of the installation machine table 1. A first drying device 4 is arranged on one side of the bottom-side roll coating roller body 2, and a second drying device 5 is arranged on the other side of the top-side roll coating roller body 3. A strip winding and unwinding structure 6 for unwinding and winding the strip is arranged on one side of the installation machine table 1. Both the first drying device 4 and the second drying device 5 are prior art devices for drying the strip after roll coating in the prior art, which can achieve the purpose of accelerating the solidification of the coating on the strip surface and are well-known prior art devices to those skilled in the art; The strip winding and unwinding structure 6 includes two strip winding and unwinding racks 36. The two strip winding and unwinding racks 36 respectively clamp the shaft body, and are respectively used to unwind the wound strip and wind the strip that has been roll-coated on both sides. The strip winding and unwinding rack pair 36 is a common prior art device in the prior art for winding and unwinding the strip by fixing the shaft body. By driving the fixed shaft body to rotate in the corresponding direction, the winding and unwinding operations of the strip are realized, which are well-known prior art devices to those skilled in the art. In addition, it should be supplemented that the strip winding and unwinding racks 36 in the prior art generally have an automatic centering function to correct the moving angle of the strip during movement and prevent the strip from running off during transportation.

[0025] It further includes a conveying box body 7. The conveying box body 7 is fixedly connected to one side of the top of the installation machine table 1. A driving conveying shaft 8 for moving the strip and a plurality of guiding conveying shafts 9 are arranged in the conveying box body 7. A first driving motor 37 and a first gear box 38 are arranged between the conveying box body 7 and the installation machine table 1. The output end of the first driving motor 37 is in transmission cooperation with the first gear box 38, and the driving conveying shaft 8 is in transmission cooperation with the first gear box 38. By starting the first driving motor 37, the driving conveying shaft 8 can be driven to rotate to convey the strip; On the other side of the top of the installation machine 1, there is a steering conveyor mechanism. The strip steel is used to pass through the strip steel winding and unwinding structure 6, the conveying box body 7, the bottom side roller coating roller body 2, the first drying device 4, the steering conveyor mechanism, the top side roller coating roller body 3 and the second drying device 5 in sequence, and then return to the strip steel winding and unwinding structure 6 after passing through the conveying box body 7 again. A rotating support 10 is fixedly connected to the inner top wall of the conveying box body 7, and the driving conveying shaft 8 is rotatably connected within the rotating support 10. A plurality of fixed supports 11 are fixedly connected to the inner bottom wall of the conveying box body 7, and the guiding conveying shaft 9 is rotatably connected within the fixed supports 11. A strip steel pressing assembly is arranged between the rotating support 10 and the driving conveying shaft 8. In order to perform double-sided roller coating operations on the strip steel during the conveying process, the strip steel is first input into the conveying box body 7, and then under the action of the driving conveying shaft 8 and a plurality of guiding conveying shafts 9, the strip steel is input into the installation rack 15 on the bottom side. The bottom side roller coating roller body 2 is used to perform roller coating operations on the upward-facing end surface of the strip steel. After the roller coating, the strip steel continues to be conveyed into the first drying device 4. After the coating on the strip steel surface is dried, the strip steel is input onto the steering conveyor mechanism, and the strip steel is moved back towards the strip steel winding and unwinding structure 6. Then the strip steel is conveyed into the installation rack 15 on the top side. At this time, the end surface of the strip steel that has not undergone roller coating operations faces upward. The top side roller coating roller body 3 is used to perform roller coating operations on the end surface of the strip steel. Then the strip steel continues to be conveyed into the second drying device 5. After drying the strip steel, the strip steel is re-input into the conveying box body 7, and finally the strip steel is conveyed onto the corresponding strip steel winding and unwinding rack 36 to perform winding operations on the double-sided roller-coated strip steel.

[0026] The strip steel pressing assembly includes a sliding groove frame 29, which is fixedly connected to the inner bottom wall of the rotating support 10. A moving groove body 30 is slidably connected within the sliding groove frame 29. An extrusion roller body is rotatably connected within the moving groove body 30. A spring damper 31 is arranged between the inner wall of the moving groove body 30 and the sliding groove frame 29, and is used to convey the strip steel between the driving conveying shaft 8 and the extrusion roller body into the discharge port 13. In order to convey the strip steel that has undergone double-sided roller coating operations again, the strip steel is re-input into the conveying box body 7, so that the strip steel moves between the extrusion roller body and the driving conveying shaft 8. Under the action of the spring damper 31, the moving groove body 30 moves within the sliding groove frame 29, and the extrusion roller body presses the strip steel, enabling the driving conveying shaft 8 to fully drive the strip steel to move. The main driving force during the conveying process of the strip steel is the traction force brought by the strip steel winding and unwinding rack 36, and making the driving conveying shaft 8 contact the strip steel can alleviate the problem of insufficient tension that occurs during the long-distance conveying of the strip steel.

[0027] On the lower side of one end of the conveying box body 7 facing the strip steel winding and unwinding structure 6, there is a feed port 12 for the uncoated strip steel to enter, and the completely uncoated strip steel is conveyed into the conveying box body 7 through the feed port 12; On the upper side of one end of the conveying box body 7 facing the strip steel winding and unwinding structure 6, there is an outlet 13 for the strip steel to move out after complete roller coating. The strip steel after complete roller coating finally moves out of the conveying box body 7 through the outlet 13; On the top of the conveying box body 7, there is also a feeding port 14 for the strip steel to enter the conveying box body 7 after roller coating. After the strip steel completes the roller coating operation, the strip steel will be conveyed through the feeding port 14 between the driving conveying shaft 8 and the extrusion roller body, so that the strip steel can be smoothly conveyed onto the strip steel winding and unwinding rack 36.

[0028] Two mounting frames 15 are fixedly connected to the mounting machine table 1. The bottom side roller coating roller body 2 and the top side roller coating roller body 3 are both rotatably arranged on the top of the corresponding mounting frame 15. A strip steel lifting assembly is arranged on the inner bottom of the mounting frame 15. A second driving motor 39 is arranged on the mounting frame 15. The output end of the second driving motor 39 is connected to the bottom side roller coating roller body 2 or the top side roller coating roller body 3. Starting the second driving motor 39 can drive the bottom side roller coating roller body 2 or the top side roller coating roller body 3 to rotate. When the coating is applied to the surface of the bottom side roller coating roller body 2 or the top side roller coating roller body 3 and the bottom side roller coating roller body 2 or the top side roller coating roller body 3 is rotated, the bottom side roller coating roller body 2 or the top side roller coating roller body 3 can roll the coating onto the surface of the strip steel; The steering conveying mechanism includes a steering frame 16. The steering frame 16 is fixedly connected to the mounting machine table 1. Moving chambers 17 are arranged on both the upper and lower sides of the steering frame 16. Steering drive shafts 18 are rotatably arranged on one side of the inner walls of the two moving chambers 17 close to each other. Among them, strip steel lifting assemblies are also arranged on the two moving chambers 17 corresponding to the steering drive shafts 18. After the roller coating operation is carried out on one side of the strip steel, the strip steel changes the conveying direction between the two moving chambers 17. The strip steel contacts the steering drive shafts 18 and the lifting roller bodies. A third driving motor 40 and a matching second gearbox 41 are arranged in the middle of the steering frame 16. Both steering drive shafts 18 are in transmission cooperation with the second gearbox 41. The output end of the third driving motor 40 is matched with the second gearbox 41. Starting the third driving motor 40 can drive the two steering drive shafts 18 to rotate synchronously to convey the strip steel.

[0029] The strip lifting assembly includes a support trough frame 32 which is fixedly connected to the installation frame 15 or the steering frame 16. A sliding trough body 33 is slidably connected inside the support trough frame 32. An elastic bending piece 34 is arranged between the sliding trough body 33 and the inner wall of the support trough frame 32. A top roller body 35 is rotatably connected inside the sliding trough body 33. In order to enable the strip to be in full contact with the bottom side coating roller body 2, the top side coating roller body 3 and the steering drive shaft 18 during the conveying process, during the strip conveying process, due to the characteristic of the elastic bending piece 34 made of metal material to bend and reset, the sliding trough body 33 moves inside the support trough frame 32, so that the top roller body 35 lifts the strip towards the bottom side coating roller body 2, the top side coating roller body 3 and the steering drive shaft 18.

[0030] A coating injection mechanism for injecting the coating for roller coating is arranged between the bottom side coating roller body 2 and the top side coating roller body 3. The coating injection mechanism includes a uniform injection assembly and an installation trough frame 19. The uniform injection assembly is arranged on the top of the installation frame 15. The installation trough frame 19 is arranged on the installation machine table 1. An injection pipeline 20 is arranged inside the installation trough frame 19. A flexible surface 21 is arranged at the top of the injection pipeline 20. A coating extrusion assembly is arranged between the flexible surface 21 and the installation trough frame 19. Among them, a plurality of injection valve pipes 22 are communicated between the injection pipeline 20 and the uniform injection assembly located on the upper side. Two feeding valve pipes 23 are communicated between both sides of the injection pipeline 20 and the uniform injection assembly located on the lower side. The second drying device 5 is located between the two feeding valve pipes 23. After injecting the roller coating into the injection pipeline 20, keep the injection valve pipes 22 and the feeding valve pipes 23 closed, fill the inside of the injection pipeline 20 with the roller coating, and then open the injection valve pipes 22 or the feeding valve pipes 23 to inject the roller coating into the corresponding feeding cylinder body 25. The coating extrusion assembly includes a rotating trough frame 42. A rotating shaft 43 is rotatably connected inside the rotating trough frame 42. A fourth driving motor 44 is arranged between the rotating trough frame 42 and the installation trough frame 19. The output end of the fourth driving motor 44 is fixedly connected to the rotating shaft 43. An arc-shaped extrusion body 45 is arranged on the rotating shaft 43. The arc-shaped extrusion body 45 contacts the flexible surface 21. In order to improve the speed of injecting the roller coating in the injection pipeline 20 into the injection valve pipes 22 and the feeding valve pipes 23, start the fourth driving motor 44 to drive the rotating shaft 43 and the arc-shaped extrusion body 45 to rotate, so that the arc-shaped extrusion body 45 contacts the flexible surface 21, and extrude the roller coating in the injection pipeline 20 to accelerate the discharge speed of the roller coating.

[0031] The uniform injection component includes a feed hopper 24, which is fixedly connected to the top of the installation frame 15. A feed cylinder 25 is connected to the top of the feed hopper 24. The injection valve pipe 22 and the feed valve pipe 23 are respectively connected to the corresponding feed cylinder 25. Among them, the bottom of the feed hopper 24 is set as a sloped surface, and a sloped part 26 is fixedly connected inside the feed hopper 24. A discharge port 27 is opened at the bottom of the feed hopper 24. A plurality of discharge heads 28 are connected to the bottom of the feed cylinder 25, and the discharge ends of the discharge heads 28 face the sloped part 26. After the roller coating is injected into the feed cylinder 25, the roller coating will be discharged through the discharge heads 28, and electromagnetic valves are also provided on the discharge heads 28, so that the roller coating can be discharged after the feed cylinder 25 is filled. However, there will still be a certain difference in the discharge speed of the roller coating by the plurality of discharge heads 28. In order to achieve the purpose of making the roller coating discharge fully and evenly, after the roller coating is discharged through the discharge heads 28, it will first flow onto the surface of the sloped part 26. The roller coating flows on the sloped surface of the sloped part 26, and then during the continuous flow of the roller coating, the roller coating will tilt on the inner sloped surface of the feed hopper 24, and finally the roller coating will flow into the area of the discharge port 27. By increasing the flow area of the roller coating, time is provided for adjusting the discharge speed of the roller coating by the discharge heads 28.

[0032] The working principle of this strip steel roller coater: First, the strip steel is first input into the conveying box 7, and then under the action of driving the conveying shaft 8 and a plurality of guiding conveying shafts 9, the strip steel is input into the installation frame 15 at the bottom side. The bottom side roller coating body 2 is used to perform roller coating operation on the upward-facing end surface of the strip steel. The roller-coated strip steel is continuously conveyed to the first drying device 4. After the coating on the strip steel surface is dried, the strip steel is input onto the turning conveying mechanism, and the strip steel is moved back towards the strip steel winding and unwinding structure 6, and then the strip steel is conveyed into the installation frame 15 at the top side. At this time, the end surface of the strip steel that has not been roller-coated faces upward, and the top side roller coating body 3 is used to perform roller coating operation on the end surface of the strip steel. Then the strip steel is continuously conveyed to the second drying device 5, and after drying the strip steel, the strip steel is input back into the conveying box 7, and finally the strip steel is conveyed to the corresponding strip steel winding and unwinding rack 36 to perform winding operation on the double-sided roller-coated strip steel.

[0033] Embodiment 2, based on a strip steel roller coater, the present invention also proposes a strip steel roller coating method, and the specific steps are as follows: Step 1. Convey the strip steel: Fix the unroller-coated strip steel on the strip steel winding and unwinding structure 6, unwind the strip steel, and move the strip steel into the conveying box 7 through the feed inlet 12, so that the driving conveying shaft 8 and the guiding conveying shafts 9 convey the strip steel. Step 2. Roller coat the strip steel: Input the strip steel into the installation frame 15 at the bottom side, and use the bottom side roller coating body 2 to perform roller coating operation on the upward-facing end surface of the strip steel. Step 3, drying the strip steel: The strip steel after roll coating is continuously conveyed into the first drying device 4. After the coating on the surface of the strip steel is dried, the strip steel is conveyed to one side of the turning conveying mechanism; Step 4, turning the strip steel: The strip steel is input onto the turning conveying mechanism, and the strip steel is moved back in the direction of the strip steel winding and unwinding structure 6; Step 5, secondary roll coating of the strip steel: The strip steel is conveyed into the installation frame 15 located on the top side. At this time, the end face of the strip steel that has not undergone roll coating is facing up, and the end face of the strip steel is roll coated by the top side roll coating roller body 3; Step 6, secondary drying of the strip steel: The strip steel is continuously conveyed into the second drying device 5 for drying the strip steel; Step 7, finally conveying the strip steel: The strip steel is re-input into the conveying box body 7, and finally the strip steel is conveyed to the corresponding strip steel winding and unwinding rack 36 for winding the strip steel after double-sided roll coating.

[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A strip coating machine, comprising a mounting platform (1), wherein a bottom coating roller body (2) and a top coating roller body (3) are rotatably arranged on the top of the mounting platform (1), a first drying device (4) is arranged on one side of the bottom coating roller body (2), and a second drying device (5) is arranged on the other side of the top coating roller body (3), and a strip retracting structure (6) for unwinding and rewinding the strip is arranged on one side of the mounting platform (1), characterized in that: Also includes: a conveying box (7), wherein the conveying box (7) is fixedly connected to one side of the top of the installation platform (1), wherein a driving conveying shaft (8) and a plurality of guiding conveying shafts (9) for moving the steel strip are arranged in the conveying box (7), and a steering conveying mechanism is arranged on the other side of the top of the installation platform (1), wherein the steel strip is used to sequentially pass through the steel strip receiving and releasing structure (6), the conveying box (7), the bottom coating roller body (2), the first drying device (4), the steering conveying mechanism, the top coating roller body (3) and the second drying device (5), and then pass through the conveying box (7) again before returning to the steel strip receiving and releasing structure (6); A paint injection mechanism, wherein the paint injection mechanism for injecting the roller coating paint is provided between the bottom roller coating roller body (2) and the top roller coating roller body (3).

2. A strip steel roller coating machine according to claim 1, characterized in that: A rotating bracket (10) is fixedly connected to the inner top wall of the conveying box (7), the driving conveying shaft (8) is rotatably connected in the rotating bracket (10), a plurality of fixed brackets (11) are fixedly connected to the inner bottom wall of the conveying box (7), the guiding conveying shaft (9) is rotatably connected in the fixed bracket (11), and a strip steel extrusion assembly is provided between the rotating bracket (10) and the driving conveying shaft (8).

3. A strip steel roller coating machine according to claim 2, characterized in that: The conveying box (7) is provided with a feed inlet (12) on the lower side of one end of the strip steel receiving and releasing structure (6) for allowing uncoated strip steel to enter, and the conveying box (7) is provided with a discharge outlet (13) on the upper side of one end of the strip steel receiving and releasing structure (6) for allowing the strip steel to be removed after being completely coated, and the top of the conveying box (7) is also provided with a feed inlet (14) for allowing the strip steel to enter the conveying box (7) after being completely coated.

4. A strip steel roller coating machine according to claim 3, characterized in that: The mounting platform (1) is fixedly connected to two mounting frames (15); the bottom coating roller body (2) and the top coating roller body (3) are both rotatably arranged on the top of the corresponding mounting frames (15); and a strip steel lifting assembly is arranged on the inner bottom of the mounting frame (15).

5. A strip steel roller coating machine according to claim 4, characterized in that: The steering conveying mechanism comprises: A steering frame (16), the steering frame (16) being fixedly connected to the mounting platform (1), the steering frame (16) being provided with movable chambers (17) on both upper and lower sides, and a steering drive shaft (18) being rotatably provided on one side of the inner wall adjacent to the two movable chambers (17); Wherein, the two movable chambers (17) corresponding to the steering drive shaft (18) are also provided with the strip steel lifting assembly.

6. A strip steel roller coating machine according to claim 5, characterized in that: The coating material injection mechanism comprises: A uniform injection assembly, wherein the top of the mounting frame (15) is provided with the uniform injection assembly; A mounting trough frame (19), the mounting trough frame (19) being arranged on the mounting machine platform (1), an injection pipeline (20) being arranged in the mounting trough frame (19), a flexible surface (21) being arranged on the top of the injection pipeline (20), and a coating material extrusion assembly being arranged between the flexible surface (21) and the mounting trough frame (19); A plurality of injection valve pipes (22) are connected between the injection pipeline (20) and the evenly distributed injection assembly located on the upper side, and two injection valve pipes (23) are connected between both sides of the injection pipeline (20) and the evenly distributed injection assembly located on the lower side.

7. A strip steel roller coating machine according to claim 6, characterized in that: The uniform injection assembly comprises: A material injection hopper (24), the material injection hopper (24) being fixedly connected to the top of the mounting frame (15), the top of the material injection hopper (24) being connected to a material injection barrel (25), the injection valve pipe (22) and the material injection valve pipe (23) being respectively connected to the corresponding material injection barrel (25); The bottom of the injection hopper (24) is configured as a sloped surface, a sloped component (26) is fixedly connected inside the injection hopper (24), a discharge port (27) is provided at the bottom of the injection hopper (24), and a plurality of discharge heads (28) are connected at the bottom of the injection barrel (25), with the discharge ends of the discharge heads (28) facing the sloped component (26).

8. A strip steel roller coating machine according to claim 7, characterized in that: The strip steel extrusion assembly comprises: A sliding trough frame (29), the sliding trough frame (29) is fixedly connected to the inner bottom wall of the rotating bracket (10), a movable trough body (30) is slidably connected in the sliding trough frame (29), an extrusion roller body is rotatably connected in the movable trough body (30), and a spring damper (31) is provided between the movable trough body (30) and the inner wall of the sliding trough frame (29) for conveying the strip between the driving conveying shaft (8) and the extrusion roller body to the discharge port (13).

9. A strip steel roller coating machine according to claim 8, characterized in that: The strip steel lifting assembly comprises: A support trough frame (32), the support trough frame (32) being fixedly connected to the mounting frame (15) or the steering frame (16), a sliding trough body (33) being slidably connected inside the support trough frame (32), an elastic bending sheet (34) being provided between the sliding trough body (33) and the inner wall of the support trough frame (32), and a material ejecting roller body (35) being rotatably connected inside the sliding trough body (33).

10. A strip coating method, using a strip coating machine according to claim 9, characterized in that: The following steps are involved: Step 1, conveying the steel strip: fixing the uncoated steel strip on the steel strip retracting and unwinding structure (6), unwinding the steel strip, moving the steel strip through the feed port (12) into the conveying box (7), and allowing the driving conveying shaft (8) and the guiding conveying shaft (9) to convey the steel strip; Step 2, rolling the steel strip: inputting the steel strip into the mounting frame (15) located at the bottom side, and using the bottom side rolling roller (2) to roll-coat the end surface of the steel strip facing upward; Step 3, drying the steel strip: the steel strip after roller coating is continuously conveyed to the first drying device (4), and after the coating on the surface of the steel strip is dried, the steel strip is conveyed to one side of the steering conveying mechanism; Step 4, turning the steel strip: inputting the steel strip to the turning conveying mechanism, and moving the steel strip back to the direction of the steel strip taking-up and releasing structure (6); Step 5, secondary rolling coating of the steel strip: conveying the steel strip to the installation frame (15) located at the top side, with the end surface of the steel strip not subjected to the rolling coating facing upward, and rolling coating the end surface of the steel strip by the top side rolling coating roller body (3); Step 6: Secondary drying of the steel strip: the steel strip is further conveyed to the second drying device (5) to be dried; Step 7, finally conveying the steel strip: re-inputting the steel strip into the conveying box (7), and finally conveying the steel strip to the corresponding steel strip taking-up and releasing structure (6), and performing a winding operation on the double-sided roll-coated steel strip.

Images