Metal plate film coating production line

Abstract

The utility model discloses a metal plate film coating production line which is characterized in that the metal plate film coating production line comprises an uncoiler, an inlet loop, a first processing mechanism, an outlet loop and a coiler which are sequentially arranged, and the first processing mechanism comprises a double-sided coating machine, a heating oven, a front side film pressing part and a heat preservation oven which are sequentially arranged between the inlet loop and the outlet loop; a film releasing machine and a preheating drying oven are further arranged at an inlet of the front film pressing part; a back protective film pressing machine is further arranged between the heat preservation drying oven and the outlet loop, and a first protective film placing part is arranged at an inlet of the back protective film pressing machine; a front face protective film pressing machine is further arranged between the outlet loop and the winding machine, and a second protective film placing part is arranged at an inlet of the front face protective film pressing machine. According to the utility model, the production efficiency is effectively ensured, so that the production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of metal plate production and processing, and more particularly to a metal plate coating production line. Background Technology

[0002] Metal sheet lamination technology is a processing technique that applies a plastic film to a metal sheet by hot pressing it at high temperature. In existing technologies, after unwinding, the metal sheet is fed into a lamination machine for lamination, and then subsequently rewound. This structure has the following drawbacks:

[0003] 1. Changing rolls requires stopping the machine, which is inefficient;

[0004] 2. After the product is manufactured, its surface is easily scratched, affecting the product's appearance and quality. Summary of the Invention

[0005] The purpose of this invention is to provide a metal plate coating production line. By using this structure, processing efficiency can be improved while ensuring processing quality.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a metal plate coating production line, comprising an uncoiler, an inlet looper, a first processing mechanism, an outlet looper and a rewinder arranged in sequence, wherein the first processing mechanism comprises a double-sided coating machine, a heating oven, a front pressing section and an insulated oven arranged in sequence between the inlet looper and the outlet looper;

[0007] The inlet of the front pressing section is also equipped with a film feeding machine and a preheating oven;

[0008] A back protective film pressing machine is also provided between the heat-insulating oven and the outlet looper, and a first protective film feeding part is provided at the inlet of the back protective film pressing machine;

[0009] A front protective film pressing machine is also provided between the outlet looper and the winding machine, and a second protective film feeding section is provided at the entrance of the front protective film pressing machine.

[0010] In the above technical solution, an air-cooling device, a water-cooled correction machine, and a first tensioning machine are sequentially arranged between the heat-insulating oven and the outlet looper.

[0011] In the above technical solution, an edge trimming machine is also provided between the export looper and the front protective film pressing machine, and a third tensioning machine is also provided between the front protective film pressing machine and the winding machine.

[0012] In the above technical solution, a sewing machine and a second tensioning machine are also sequentially arranged between the unwinding machine and the inlet loop.

[0013] In the above technical solution, the inlet loop and the outlet loop are mounted on a frame, and the inlet loop is located on the right side of the outlet loop;

[0014] The frame is provided with a base frame, a top frame, and three sets of vertical frames arranged at intervals from left to right. The top frame is connected to the base frame via the three sets of vertical frames.

[0015] In the above technical solution, the inlet loop includes an inlet fixed frame, an inlet movable frame, an inlet drive unit, multiple inlet fixed rollers, and multiple inlet movable rollers. The two ends of the inlet fixed frame are fixedly connected to two upright frames respectively. The multiple inlet fixed rollers are rotatably mounted on the inlet fixed frame. The inlet movable frame is vertically moved and positioned directly above the inlet fixed frame. The multiple inlet movable rollers are rotatably mounted on the inlet movable frame. The inlet drive unit is mounted on the top frame and is configured to drive the inlet movable frame to move vertically and to move the inlet movable frame closer to or further away from the inlet fixed frame.

[0016] The outlet looper includes an outlet fixed frame, an outlet movable frame, an outlet drive unit, multiple outlet fixed rollers, and multiple outlet movable rollers. The two ends of the outlet fixed frame are fixedly connected to two upright frames respectively. The multiple outlet fixed rollers are rotatably mounted on the outlet fixed frame. The outlet movable frame is vertically moved and positioned directly above the outlet fixed frame. The multiple outlet movable rollers are rotatably mounted on the outlet movable frame. The outlet drive unit is mounted on the top frame and is configured to drive the outlet movable frame to move vertically, and to position the outlet movable frame closer to or further away from the outlet fixed frame.

[0017] In the above technical solution, the two ends of the inlet fixing frame are respectively fixedly connected to the right-side upright frame and the middle upright frame, and the two ends of the outlet fixing frame are respectively fixedly connected to the left-side upright frame and the middle upright frame. The inlet fixing frame and the outlet fixing frame are respectively arranged close to the base frame, and the bottom plane of the outlet fixing frame is arranged above the bottom plane of the inlet fixing frame.

[0018] In the above technical solution, the number of inlet fixed rollers is one more than the number of inlet movable rollers, and each inlet movable roller is positioned directly above the adjacent inlet fixed roller; the number of outlet fixed rollers is one more than the number of outlet movable rollers, and each outlet movable roller is positioned directly above the adjacent outlet fixed roller.

[0019] The inlet movable frame is rotatably mounted with inlet movable guide wheels at both ends, and the outer surfaces of the inlet movable guide wheels abut against the side walls of the corresponding uprights; the outlet movable frame is rotatably mounted with outlet movable guide wheels at both ends, and the outer surfaces of the outlet movable guide wheels abut against the side walls of the corresponding uprights.

[0020] In the above technical solution, a first guide roller is provided on the upper right side of the right-side upright, and a second guide roller is provided on the middle upright. The top planes of the first and second guide rollers are located above the top plane of the inlet movable roller. A third guide roller is provided on the lower left side of the left-side upright, and the bottom plane of the third guide roller is flush with the bottom plane of the outlet fixed roller.

[0021] In the above technical solution, the inlet drive unit is disposed on the top frame directly above the inlet movable frame. The inlet drive unit includes an inlet drive motor, an inlet drive shaft, an inlet take-up reel, and an inlet chain. The inlet drive shaft is rotatably mounted on the top frame. The inlet drive motor is configured to drive the inlet drive shaft to rotate. The inlet take-up reel is mounted on the inlet drive shaft. The bottom of the inlet chain is connected to the inlet movable frame, and the top of the inlet chain is wound onto the inlet take-up reel.

[0022] The outlet drive unit is located on the top frame directly above the outlet movable frame. The outlet drive unit includes an outlet drive motor, an outlet drive shaft, an outlet take-up reel, and an outlet chain. The outlet drive shaft is rotatably mounted on the top frame. The outlet drive motor is configured to drive the outlet drive shaft to rotate. The outlet take-up reel is mounted on the outlet drive shaft. The bottom of the outlet chain is connected to the outlet movable frame, and the top of the outlet chain is wound onto the outlet take-up reel.

[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0024] 1. This utility model is equipped with an inlet looper and an outlet looper. By utilizing the inlet looper and the outlet looper, the production line does not need to be stopped during material change, thereby improving production efficiency.

[0025] 2. This utility model also includes a back protective film pressing machine and a second protective film feeding part, which are used to apply protective film to the surface of the product after lamination, to protect the two sides of the product, and to ensure the product's aesthetics and quality.

[0026] 3. In this utility model, the inlet loop is located next to the outlet loop, making full use of the loop space and reducing space occupation;

[0027] 4. This utility model uses air cooling to improve cooling efficiency, save energy, and ensure production efficiency. Attached Figure Description

[0028] Figure 1 This is a simplified structural diagram of Embodiment 1 of this utility model;

[0029] Figure 2 This is a schematic diagram of the structure in Embodiment 1 of this utility model;

[0030] Figure 3 This is a schematic diagram of the installation location of the inlet and outlet loops in Embodiment 1 of this utility model.

[0031] The components include: 1. Unwinder; 2. Inlet looper; 3. Outlet looper; 4. Rewinder; 5. Double-sided coating machine; 6. Heating oven; 7. Front-side pressing section; 8. Insulated oven; 9. Film unloading machine; 10. Preheating oven; 11. Back protective film pressing machine; 12. First protective film unloading section; 13. Front protective film pressing machine; 14. Second protective film unloading section; 15. Sewing machine; 16. Air-cooling device; 17. Water-cooled web guiding machine; 18. First tension machine; 19. Edge trimming machine; 20. Third tension machine; 21. Hydraulic clamping shear; 22. Second tension machine; 23. Fourth tension machine; 24. Frame; 25. Base frame; 26. 27. Top frame; 28. Vertical frame; 29. ​​Inlet fixed frame; 30. Inlet movable frame; 31. Inlet fixed roller; 32. Inlet movable roller; 33. Outlet fixed frame; 34. Outlet movable frame; 35. Outlet movable roller; 36. Inlet movable guide wheel; 37. Outlet movable guide wheel; 38. First guide roller; 39. Second guide roller; 40. Third guide roller; 41. Inlet drive motor; 42. Inlet transmission shaft; 43. Inlet take-up reel; 44. Inlet chain; 45. Outlet drive motor; 46. Outlet transmission shaft; 47. Outlet take-up reel; 48. Outlet chain; 50. Metal strip. Detailed Implementation

[0032] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0033] Example 1: See Figures 1-3 As shown, a metal sheet coating production line includes an uncoiler 1, an inlet looper 2, a first processing mechanism, an outlet looper 3, and a rewinder 4 arranged in sequence. The first processing mechanism includes a double-sided coating machine 5, a heating oven 6, a front-side pressing section 7, and a heat-insulating oven 8 arranged in sequence between the inlet looper 2 and the outlet looper 3.

[0034] The inlet of the front pressing section 7 is also provided with a film feeding machine 9 and a preheating oven 10;

[0035] A back protective film pressing machine 11 is also provided between the heat preservation oven 8 and the outlet looper 3, and a first protective film feeding part 12 is provided at the inlet of the back protective film pressing machine 11.

[0036] A front protective film pressing machine 13 is also provided between the outlet looper 3 and the winding machine 4, and a second protective film feeding section 14 is provided at the entrance of the front protective film pressing machine 13.

[0037] In this embodiment, during actual use, the uncoiler is used to unwind the metal sheet. The metal sheet is wound on a shaft and loaded onto the uncoiler. Multiple drive shafts are installed on the production line for driving the metal sheet, and these drive shafts can be arranged between adjacent mechanisms. After unwinding, the sheet is fed into the inlet looper, where it is stored and transported. Then, it sequentially passes through a double-sided coating machine, a heating oven, a front-side laminating section, a heat-insulating oven, a back-side protective film laminating machine, an outlet looper, and a front-side protective film laminating machine before being wound up by a rewinder. In this process, a double-sided coating machine is used to coat the front and back of the product (metal sheet and strip) with the materials to be coated. In this embodiment, the double-sided coating machine is equipped with two coating rollers. One coating roller coats the front of the metal sheet with TPO / PVC adhesive (the metal sheet can then be used as the base of the lightning protection bracket, which is then heat-welded to the flexible roof). The other coating roller coats the back of the metal sheet with anti-corrosion paint. With the structure of the coating rollers, it can coat metal sheets with a width range of 800mm to 1200mm. Wider metal sheets can be processed in a single operation, thus increasing the processing range. After coating, the TPO / PVC adhesive is heated in a heating oven to a set temperature (230℃~250℃, total heating time approximately 80 seconds) to dry both the adhesive and the anti-corrosion paint. Then, it is fed into the front lamination section, which uses two pressure rollers. The metal plate passes between these rollers, and as it enters this section, the film release machine releases the material to be laminated (laminar materials include PP, PE, PET, nylon, cloth, laser film, and paper; materials can be selected based on different application requirements, such as transparent and white). After the plastic film is released, it is first preheated in a preheating oven and then simultaneously enters between two pressure rollers of the front laminating section, on the adhesive layer of the metal plate (front side). The two pressure rollers heat-press the film to the adhesive layer of the metal plate. After passing through an insulated oven for heat preservation, it enters the back protective film laminating machine. At the same time, the first protective film release section releases the protective film and enters the back protective film laminating machine, pressing and attaching the protective film to the back of the metal plate to protect the back of the metal plate. After the coating material and the back protective film are both applied to the metal plate (the coating material is bonded with adhesive, and the adhesive is heated before bonding, so its peel resistance is strong, more than 3 times that of existing coated plates, and its lifespan is more than 2 times), it enters the exit loop. The exit loop stores and transports the metal plate. After being sent out of the exit loop, it passes through the front protective film pressing machine, which also uses two pressure rollers. The metal plate passes between the two pressure rollers, and the second protective film release section releases the protective film, which also passes through two pressure rollers. The two pressure rollers press the protective film onto the front of the metal plate, so that the protective film (front protective film) is applied to the coating material and protects the coating material.Finally, the metal sheet is wound up using a rewinding machine.

[0038] In this embodiment, an inlet looper and an outlet looper are provided. When the film roll on the uncoiler is about to be unwound, the uncoiler pauses, and the inlet looper is used to unwind the uncoated metal sheet stored on it. Simultaneously, the operator quickly replaces the metal sheet roll onto the uncoiler, achieving rapid unwinding. Furthermore, a sewing machine 15 is installed between the uncoiler and the inlet looper. When the uncoiler performs a roll change, the end of the metal sheet on the production line is on the sewing machine, while the metal sheet closer to the end is inside the inlet looper. When the inlet looper unwinds the metal sheet, the end of the metal sheet at the sewing machine is pressed down and does not move, allowing the metal sheet to be released using the inlet looper. After the metal sheet roll on the uncoiler is changed, the end of the metal sheet on the uncoiler is pulled out and placed on the sewing machine to connect the end of the metal sheet on the production line with the end of the metal sheet on the uncoiler. Subsequently, the uncoiler continues to unwind normally, and the inlet looper re-stores and transports the metal sheet.

[0039] Similarly, with the exit looper, after the metal sheet on the winding machine is fully wound, the winding machine pauses. At this time, the exit looper stores the laminated metal sheet. The metal sheet is not fed towards the rear end of the exit looper. During this process, the operator quickly removes the metal sheet from the winding machine, replaces the empty winding shaft, and then winds the laminated metal sheet onto the winding shaft. The winding shaft operates normally, and the exit looper does not need to store the metal sheet. After the product on the uncoiler has been released to a certain extent, the inlet looper quickly stores the film roll, allowing the inlet looper to store longer metal sheets. Subsequently, when changing metal sheets on the uncoiler, the inlet looper can be used to gradually release the stored longer metal sheets, thus eliminating the need to stop the production line. Before the winding machine changes metal sheets, the exit looper does not store much metal sheet and mainly serves a conveying function. When the winding machine changes metal sheets, the exit looper acts as a metal sheet storage device, storing longer metal sheets. After the winding machine is replaced, it can quickly wind up the metal sheet stored in the exit loop, so that the exit loop does not store as much metal sheet as possible, mainly serving a transmission function. When the winding machine changes rolls, the exit loop stores the metal sheet strip. Even if the winding machine is not working, the production line can still operate normally.

[0040] See Figure 1 , 2 As shown, an air-cooling device 16, a water-cooled correction machine 17, and a first tensioning machine 18 are sequentially arranged between the heat-insulating oven 8 and the outlet looper 3.

[0041] In this embodiment, the air-cooling device can employ multiple sets of fans arranged along the extension direction of the metal sheet to blow air onto the metal strip and cool it down. The air-cooling device enables rapid cooling of the metal sheet, which has a certain temperature after exiting the insulated oven, with higher efficiency and lower energy consumption. The water-cooled alignment machine not only corrects the alignment of the metal sheet during transport but also further cools it on top of the air-cooling process. The first tensioning machine is used to adjust the tension between the metal sheet coating and the outlet looper, ensuring it is transported in a taut state to prevent slack and guarantee stability during transport.

[0042] See Figure 1 , 2 As shown, an edge trimming machine 19 is also provided between the outlet looper 3 and the front protective film pressing machine 13, and a third tensioning machine 20 is also provided between the front protective film pressing machine 13 and the winding machine 4.

[0043] The edge trimming machine is used to cut off the edges of the metal sheet, making the edges neat or adjusting the width of the metal sheet to the required width. The third tensioning machine is used to adjust the tension between the exit looper and the winding machine. Furthermore, a clamping hydraulic shear 21 is installed between the third tensioning machine and the winding machine to cut off and limit the ends of the metal sheet, allowing the winding machine to remove the wound metal sheet. At the same time, when the exit looper is storing the metal sheet, the clamping hydraulic shear clamps the ends of the metal sheet (which is strip-shaped), preventing the metal sheet at the winding machine from being pulled into the exit looper during storage; only the laminated metal sheet is pulled for storage.

[0044] A sewing machine 15 and a second tensioning machine 22 are sequentially arranged between the uncoiler 1 and the inlet looper 2. The second tensioning machine is used to adjust the tension of the metal strip between the uncoiler and the inlet looper, so that the metal strip is taut and the conveying stability is guaranteed.

[0045] A fourth tensioner 23 will also be installed between the inlet looper 2 and the double-sided coating machine 5. The fourth tensioner will be used to adjust the conveying tension of the metal strip between the inlet looper and the double-sided coating machine, so that it is actually in a taut conveying state.

[0046] See Figure 2 , 3 As shown, the inlet loop 2 and the outlet loop 3 are mounted on a frame 24, with the inlet loop 2 located to the right of the outlet loop 3;

[0047] The frame 24 is provided with a base frame 25, a top frame 26 and three sets of uprights 27 arranged from left to right. The top frame 26 is connected to the base frame 25 via the three sets of uprights 27.

[0048] The inlet loop 2 includes an inlet fixed frame 28, an inlet movable frame 29, an inlet drive unit, multiple inlet fixed rollers 30 and multiple inlet movable rollers 31. The two ends of the inlet fixed frame are fixedly connected to two uprights respectively. The multiple inlet fixed rollers are rotatably mounted on the inlet fixed frame. The inlet movable frame is vertically moved and positioned directly above the inlet fixed frame. The multiple inlet movable rollers are rotatably mounted on the inlet movable frame. The inlet drive unit is mounted on the top frame 26. The inlet drive unit is configured to drive the inlet movable frame 29 to move vertically and to move the inlet movable frame 29 closer to or away from the inlet fixed frame 28.

[0049] The outlet looper 3 includes an outlet fixed frame 32, an outlet movable frame 33, an outlet drive unit, multiple outlet fixed rollers 34, and multiple outlet movable rollers 35. The two ends of the outlet fixed frame 33 are fixedly connected to two upright frames 27 respectively. The multiple outlet fixed rollers 34 are rotatably mounted on the outlet fixed frame 32. The outlet movable frame 33 is vertically moved and positioned directly above the outlet fixed frame 32. The multiple outlet movable rollers 35 are rotatably mounted on the outlet movable frame 33. The outlet drive unit is mounted on the top frame 26. The outlet drive unit is configured to drive the outlet movable frame 33 to move vertically and to move the outlet movable frame 33 closer to or further away from the outlet fixed frame 32.

[0050] The two ends of the inlet fixing frame are respectively fixedly connected to the right-side upright frame and the middle upright frame, and the two ends of the outlet fixing frame are respectively fixedly connected to the left-side upright frame and the middle upright frame. The inlet fixing frame and the outlet fixing frame are respectively arranged close to the base frame. The bottom plane of the outlet fixing frame is arranged above the bottom plane of the inlet fixing frame, and the bottom plane of the outlet fixing roller is arranged above the bottom plane of the inlet fixing roller.

[0051] The number of inlet fixed rollers is one more than the number of inlet movable rollers, and each inlet movable roller is positioned directly above an adjacent inlet fixed roller; the number of outlet fixed rollers is one more than the number of outlet movable rollers, and each outlet movable roller is positioned directly above an adjacent outlet fixed roller; in this embodiment, there are 7 inlet fixed rollers, 6 inlet movable rollers, 6 outlet fixed rollers, and 5 outlet movable rollers.

[0052] The metal strip passes sequentially from the left, around an inlet fixed roller, an inlet movable roller, an inlet fixed roller, and so on, until it exits from the rightmost inlet fixed roller to the next process. As the inlet movable frame moves down and approaches the inlet fixed frame, the length of metal strip that can be stored on the inlet loop gradually shortens. When storage is needed, the inlet movable frame moves upward away from the inlet fixed roller. At this time, the uncoiler accelerates the release of the metal strip, while the speed at which the double-sided coating machine pulls the metal strip 50 remains unchanged. This allows the inlet loop to store as much metal strip as possible, facilitating material changing by the uncoiler in the preceding process. After material changing is completed, the uncoiler's unwinding speed is less than the double-sided coating machine's traction speed. Simultaneously, the inlet movable frame moves down and approaches the inlet fixed frame, gradually releasing the stored metal strip, so that it stores no metal strip or only a small amount of metal strip. Similarly, as the exit movable frame moves down and approaches the exit fixed frame, the length of the metal strip stored on the exit loop gradually shortens. During the rewinding process at the rear, the double-sided coating machine's speed remains constant, and the rear rewinding machine has no traction speed. At this point, the exit movable frame moves up, drawing the coated metal strip and storing it in the exit loop. After the rewinding is complete, the rewinding machine quickly winds up the metal strip. At this point, the rewinding speed of the rewinding machine is greater than the coating speed of the double-sided coating machine. The exit movable frame then gradually moves down, rapidly winding up the metal strip stored in the exit loop without affecting the metal strip winding, until the amount of metal strip stored in the exit loop is reduced to a preset value. The rewinding speed of the rewinding machine then decreases to match the coating speed. In this method, coating and lamination are carried out continuously without stopping the machine, effectively ensuring both coating efficiency and quality.

[0053] See Figure 3 As shown, inlet movable guide wheels 36 are rotatably installed at both ends of the inlet movable frame 29, and the outer surfaces of the inlet movable guide wheels 36 abut against the right side of the upright and the middle side wall of the upright, respectively; outlet movable frame 33 is rotatably installed at both ends of the outlet movable frame 37, and the outer surfaces of the outlet movable guide wheels 37 at both ends abut against the middle side of the upright and the left side wall of the upright, respectively.

[0054] By setting up inlet and outlet movable guide wheels, the inlet and outlet movable frames can move stably when moving vertically, ensuring vertical movement and preventing damage to the corresponding inlet and outlet drive parts, thus reducing maintenance rate and extending service life.

[0055] See Figure 3As shown, a first guide roller 38 is provided on the upper right side of the right-side support frame 27, and a second guide roller 39 is provided on the middle support frame 27. The top planes of the first guide roller 38 and the second guide roller 39 are located above the top plane of the inlet movable roller 31. A third guide roller 40 is provided on the lower left side of the left-side support frame 27. The bottom plane of the third guide roller 40 is flush with the bottom plane of the outlet fixed roller 34.

[0056] When the inlet movable frame is moved to its highest position, both the first and second guide rollers are positioned above the top plane of the inlet movable roller. In this configuration, the normal entry of the metal strip into the outlet looper is not affected. Furthermore, in this embodiment, the outlet looper and the inlet looper are mounted on the same frame, maximizing space utilization, reducing space occupation, minimizing frame material usage, and lowering costs.

[0057] See Figure 3 As shown, the inlet drive unit is located on the top frame directly above the inlet movable frame. The inlet drive unit includes an inlet drive motor 41, an inlet drive shaft 42, an inlet take-up reel 43, and an inlet chain 44. The inlet drive shaft 42 is rotatably mounted on the top frame 26, and the inlet drive motor is fixedly mounted on the top frame. The inlet drive motor 41 is configured to drive the inlet drive shaft 42 to rotate. The inlet take-up reel 43 is mounted on the inlet drive shaft 42. When the inlet drive shaft rotates, it synchronously drives the inlet take-up reel to rotate. The bottom of the inlet chain 44 is connected to the inlet movable frame 29, and the top of the inlet chain 44 is wound onto the inlet take-up reel 43. There is at least one inlet chain, preferably an even number, to ensure the stability of the drive for the inlet movable frame.

[0058] The outlet drive unit is located on the top frame 26 directly above the outlet movable frame 33. The outlet drive unit includes an outlet drive motor 45, an outlet drive shaft 46, an outlet take-up reel 47, and an outlet chain 48. The outlet drive shaft 46 is rotatably mounted on the top frame 26, and the outlet drive motor is fixedly mounted on the top frame. The outlet drive motor 45 is configured to drive the outlet drive shaft 46 to rotate. The outlet take-up reel 47 is mounted on the outlet drive shaft 46, and when the outlet drive shaft rotates, it synchronously drives the outlet take-up reel to rotate. The bottom of the outlet chain 48 is connected to the outlet movable frame 33, and the top of the outlet chain 48 is wound onto the outlet take-up reel 47. There is at least one outlet chain, preferably an even number, to ensure the stability of the drive for the outlet movable frame.

[0059] In this embodiment, the corresponding drive motor drives the corresponding transmission shaft to rotate. When the transmission shaft rotates, the corresponding chain can pull the corresponding movable frame to move up and down (when moving down, it moves automatically downwards due to the weight of the movable frame and the weight of the metal strip wound on top), thereby stably realizing the storage and release of the metal strip without stopping the machine to change materials, ensuring processing efficiency and reducing costs.

[0060] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In the description of the invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0061] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. For instance, the two components can be mechanically connected by contact or abutting; they can also be directly hooked or connected by an intermediate medium; or they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

Claims

1. A metal plate coating production line, characterized in that: It includes an unwinder, an inlet looper, a first processing mechanism, an outlet looper, and a rewinder arranged in sequence. The first processing mechanism includes a double-sided coating machine, a heating oven, a front-side pressing section, and a heat-insulating oven arranged in sequence between the inlet looper and the outlet looper. The inlet of the front pressing section is also equipped with a film feeding machine and a preheating oven; A back protective film pressing machine is also provided between the heat-insulating oven and the outlet looper, and a first protective film feeding part is provided at the inlet of the back protective film pressing machine; A front protective film pressing machine is also provided between the outlet looper and the winding machine, and a second protective film feeding section is provided at the entrance of the front protective film pressing machine.

2. The metal plate coating production line according to claim 1, characterized in that: An air-cooling device, a water-cooled alignment machine, and a first tensioning machine are sequentially installed between the insulated oven and the outlet looper.

3. The metal plate coating production line according to claim 1, characterized in that: An edge trimming machine is also provided between the outlet looper and the front protective film pressing machine, and a third tensioning machine is also provided between the front protective film pressing machine and the winding machine.

4. The metal plate coating production line according to claim 1, characterized in that: A sewing machine and a second tensioning machine are also sequentially arranged between the uncoiling machine and the inlet looper.

5. The metal plate coating production line according to claim 1, characterized in that: The inlet loop and the outlet loop are mounted on a frame, with the inlet loop located to the right of the outlet loop; The frame is provided with a base frame, a top frame, and three sets of vertical frames arranged at intervals from left to right. The top frame is connected to the base frame via the three sets of vertical frames.

6. The metal plate coating production line according to claim 5, characterized in that: The inlet loop includes an inlet fixed frame, an inlet movable frame, an inlet drive unit, multiple inlet fixed rollers, and multiple inlet movable rollers. The two ends of the inlet fixed frame are fixedly connected to two upright frames respectively. The multiple inlet fixed rollers are rotatably mounted on the inlet fixed frame. The inlet movable frame is vertically moved and positioned directly above the inlet fixed frame. The multiple inlet movable rollers are rotatably mounted on the inlet movable frame. The inlet drive unit is mounted on the top frame and is configured to drive the inlet movable frame to move vertically and to move the inlet movable frame closer to or away from the inlet fixed frame. The outlet looper includes an outlet fixed frame, an outlet movable frame, an outlet drive unit, multiple outlet fixed rollers, and multiple outlet movable rollers. The two ends of the outlet fixed frame are fixedly connected to two upright frames respectively. The multiple outlet fixed rollers are rotatably mounted on the outlet fixed frame. The outlet movable frame is vertically moved and positioned directly above the outlet fixed frame. The multiple outlet movable rollers are rotatably mounted on the outlet movable frame. The outlet drive unit is mounted on the top frame and is configured to drive the outlet movable frame to move vertically, and to position the outlet movable frame closer to or further away from the outlet fixed frame.

7. The metal plate coating production line according to claim 6, characterized in that: The two ends of the inlet fixing frame are respectively fixedly connected to the right-side upright frame and the middle upright frame, and the two ends of the outlet fixing frame are respectively fixedly connected to the left-side upright frame and the middle upright frame. The inlet fixing frame and the outlet fixing frame are respectively arranged close to the base frame, and the bottom plane of the outlet fixing frame is arranged above the bottom plane of the inlet fixing frame.

8. The metal plate coating production line according to claim 7, characterized in that: The number of fixed inlet rollers is one more than the number of movable inlet rollers, and each movable inlet roller is positioned directly above the adjacent fixed inlet roller. The number of the fixed outlet rollers is one more than the number of the movable outlet rollers, and each of the movable outlet rollers is positioned directly above the adjacent fixed outlet roller. The inlet movable frame is rotatably mounted with inlet movable guide wheels at both ends, and the outer surfaces of the inlet movable guide wheels abut against the side walls of the corresponding uprights; the outlet movable frame is rotatably mounted with outlet movable guide wheels at both ends, and the outer surfaces of the outlet movable guide wheels abut against the side walls of the corresponding uprights.

9. The metal plate coating production line according to claim 7, characterized in that: A first guide roller is provided on the upper right side of the right-side support frame, and a second guide roller is provided on the middle support frame. The top planes of the first and second guide rollers are located above the top plane of the inlet movable roller. A third guide roller is provided on the lower left side of the left-side support frame, and the bottom plane of the third guide roller is flush with the bottom plane of the outlet fixed roller.

10. The metal plate coating production line according to claim 6, characterized in that: The inlet drive unit is located on the top frame directly above the inlet movable frame. The inlet drive unit includes an inlet drive motor, an inlet drive shaft, an inlet take-up reel, and an inlet chain. The inlet drive shaft is rotatably mounted on the top frame. The inlet drive motor is configured to drive the inlet drive shaft to rotate. The inlet take-up reel is mounted on the inlet drive shaft. The bottom of the inlet chain is connected to the inlet movable frame, and the top of the inlet chain is wound onto the inlet take-up reel. The outlet drive unit is located on the top frame directly above the outlet movable frame. The outlet drive unit includes an outlet drive motor, an outlet drive shaft, an outlet take-up reel, and an outlet chain. The outlet drive shaft is rotatably mounted on the top frame. The outlet drive motor is configured to drive the outlet drive shaft to rotate. The outlet take-up reel is mounted on the outlet drive shaft. The bottom of the outlet chain is connected to the outlet movable frame, and the top of the outlet chain is wound onto the outlet take-up reel.

Images