A roll-coating aluminum plate drying color protection system

Abstract

The application discloses a kind of roll-coated aluminum plate drying color protection system, including support, chain type conveying frame and drying box, the middle part of chain type conveying frame is communicated up and down, the input end of transmission chain is installed with forward and reverse motor by chain wheel mechanism, and two transmission chains are jointly installed with limit mechanism;Drying box is installed with double-shaft motor inside, the output end of double-shaft motor is installed with screw rod, the inside of drying box outside screw rod is installed with clamping adjusting mechanism, the inside of drying box in the upper and lower orientation of double-shaft motor is installed with drying mechanism;Detection platform is installed at the top of chain type conveying frame on one side of drying box, and mobile carrier is installed on electric drive belt.The application is provided with a series of structures, so that the roll-coated aluminum plate drying color protection system is suitable for multiple roll-coating and multiple drying requirements of the upper and lower two aluminum plates, avoids the influence on drying while carrying out targeted drying treatment on the roll-coating thickness, and has quality auxiliary detection and qualified product discharge control function.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of aluminum plate roll coating processing, in particular to a drying and color protection system for roll-coated aluminum plate. BACKGROUND

[0002] In the conventional aluminum plate processing process, for some special purposes, such as factory building, exhibition center, large-scale store, etc., the colored aluminum plate obtained by roll coating is often used in the building enclosure of the outer wall of the building. Most of such aluminum plates are made of aluminum-manganese-magnesium alloy.

[0003] In the corresponding aluminum plate processing process, such as conventional single-sided aluminum plate roll coating processing, in order to ensure sufficient coloring effect, the aluminum plate needs to be roll coated multiple times and dried and color protected multiple times. In order to increase the actual production efficiency, the existing aluminum plate roll coating processing is usually in the form of a production line, and multiple drying and color protection devices and corresponding roll coating devices need to be configured in the production line. Therefore, the devices configured on the entire production line are more, resulting in higher actual device cost.

[0004] Correspondingly, in the existing process, the top and bottom of the aluminum plate are simultaneously roll coated, which further increases the number of drying. If a single production line conveying and drying synchronization mode is adopted, the device cost is further increased or the length of the production line is increased. Moreover, because the number of coatings on the top and bottom of the aluminum plate may be different, the actual coating thickness is different, and the drying operation is not performed for different thicknesses of the coating during the drying process, resulting in problems in the quality of drying and color protection. SUMMARY

[0005] The present application aims to provide a roll-coated aluminum plate drying and color protection system to solve the problems in the background art.

[0006] To achieve the above-mentioned purpose, the present application provides the following technical scheme: a roll-coated aluminum plate drying and color protection system, comprising a support, a chain conveying frame installed at the top end of the support, and a drying box installed above the chain conveying frame, the middle part of the chain conveying frame is vertically connected, and two transmission chains arranged in parallel front and back are installed inside the chain conveying frame, the input end of the transmission chain is installed with a forward and reverse motor through a chain wheel mechanism, and a limiting mechanism is installed on the two transmission chains;

[0007] A double-shaft motor is installed inside the drying box, screw rods are installed at the output end of the double-shaft motor, a clamping and adjusting mechanism is installed inside the drying box outside the screw rods, and drying mechanisms are installed inside the drying box above and below the double-shaft motor;

[0008] The top end of the chain conveying frame on one side of the drying box is provided with a detection table, and an electric transmission belt is arranged along the vertical direction of the chain conveying frame, and a moving carrier is arranged on the electric transmission belt.

[0009] Preferably, the clamping adjusting mechanism comprises a limiting groove, a sliding block, a connecting rod and a clamping assembly. The limiting groove is arranged on the inner wall surface of the drying box on the front and rear sides of the screw rod. The surface of the screw rod is threadedly connected with the sliding block. The surface of the sliding block is limitedly matched with the limiting groove. Two sliding blocks are arranged on the surfaces of the limiting grooves on the front and rear sides. The two sliding blocks on the front and rear sides are arranged in a group. The connecting rod is arranged between the sliding blocks in a single group. The clamping assembly is arranged on the surface of the connecting rod.

[0010] Preferably, the clamping assembly comprises a pneumatic finger and a telescopic cylinder. Two telescopic cylinders are arranged in parallel on the surface of the connecting rod on the front and rear sides. The pneumatic finger is arranged at the end of the telescopic cylinder.

[0011] Preferably, a hot air blower is arranged on the outer surface of the drying box. A multi-purpose pipe is arranged on the output end of the hot air blower. A three-way valve is arranged on the surface of the multi-purpose pipe. The two ends of the three-way valve extend to the top inner cavity of the drying box and the lower part of the drying box, respectively.

[0012] Preferably, the drying mechanism comprises a lower heat pipe, an upper heat pipe and a spray head. The lower heat pipe is arranged on the inner side of the chain conveying frame below the drying box. The upper heat pipe is arranged in the top inner cavity of the drying box. A plurality of spray heads are arranged at equal intervals on the top end of the lower heat pipe and the bottom end of the upper heat pipe. The input ends of the lower heat pipe and the upper heat pipe are connected with the two ends of the three-way valve through pipes.

[0013] Preferably, temperature sensors are arranged on the surfaces of the lower heat pipe and the upper heat pipe. A control panel is arranged on the surface of the drying box on one side of the hot air blower. The control panel is electrically connected with the temperature sensors.

[0014] Preferably, the limiting mechanism comprises a non-slip pad, a linkage rod and a bracket. A plurality of brackets are arranged on the opposite surfaces of the two transmission chains. The linkage rod is arranged between the bottoms of the left and right brackets. The top end of the bracket is provided with a non-slip pad.

[0015] Preferably, the moving carrier comprises a carrier, a suction cup and a lifting cylinder. The carrier is arranged on the bottom of the electric transmission belt. At least two lifting cylinders are arranged on the bottom end of the carrier. The bottom end of the lifting cylinder is provided with a suction cup.

[0016] Preferably, a color-changing light strip is arranged on the inner wall of the detection table on the outer side of the lifting cylinder.

[0017] Preferably, a gas control box is arranged on the top end of the drying box. Monitors are arranged above the inlet and outlet of the drying box.

[0018] Compared with the prior art, the present application has the following advantages:

[0019] 1、The roll-coating aluminum plate drying color protection system, through the chain type conveying frame, the configuration of the forward and reverse motor, can bear the aluminum plate at the same time, reciprocating conveying operation in left and right direction, in the roll-coating aluminum plate processing technology, especially in the operation of the second or more than twice of the front and back roll-coating operation, can make the aluminum plate left and right between the back and front roll-coating equipment, different from the existing single production line roll-coating mode, in the case of needing to roll-coating for many times, can avoid setting multiple coating equipment or multiple drying equipment along the production line, save the equipment cost at the same time, and by the up and down guide performance of the chain type conveying frame, different from the existing roll body form of conveying, can save the contact area of the roll body and the aluminum plate, avoid uneven heating at the same time, can be beneficial to the synchronous color protection drying treatment operation of the front and back of the aluminum plate.

[0020] 2、The roll-coating aluminum plate drying color protection system, through the double-shaft motor, can drive the left and right two screw rods to rotate at the same time, provide the required moving power for the clamping assembly, convenient for precise position clamping of the lower aluminum plate, and at least four pneumatic fingers can be left and right to the aluminum plate for clamping, and under the action of the telescopic cylinder, the height of the aluminum plate can be changed, in the case of the existence of the upper and lower heat pipes, when the heat gas temperature output by the upper and lower heat pipes is the same, the telescopic state of the telescopic cylinder can change whether the upper surface of the aluminum plate is close to the upper heat pipe or the lower surface is close to the lower heat pipe, and then the distance is adjusted to adjust the drying temperature or efficiency, suitable for the case that the thickness of the pigment coated on the aluminum plate is different, the thicker pigment can be close to the lower heat pipe or the upper heat pipe, and the higher temperature is used for drying and protecting the color, meeting the use in special cases, suitable for more complex process requirements.

[0021] 3、The roll-coating aluminum plate drying color protection system, through the suction cup, when quality detection is needed during the drying process, at least two suction cups can be used to lift the lower aluminum plate, and two lifting cylinders can be used to change the height difference between the two suction cups under the action of the two lifting cylinders, so that the bottom surface of the aluminum plate is laterally displayed, which is beneficial to manual observation of the roll-coating or drying quality of the bottom of the aluminum plate, and under the action of the electric transmission belt, after the qualified aluminum plate is detected, it can be directly transported in the front and rear directions, and the conveying line or other transfer equipment on one side or both sides is used to directly transfer the processed aluminum plate, optimizing the whole processing system. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0023] Figure 2 It is a schematic diagram of the internal structure of the drying box of the present application;

[0024] Figure 3 For the carrier frame side view structure of the present application Figure 2 is a local enlarged view of A in the present application

[0025] Figure 4 For the carrier frame side view structure of the present application

[0026] Figure 5 For the carrier frame side view structure of the present application

[0027] Figure: 1, support; 2, chain conveyor frame; 3, hot air machine; 4, pneumatic control box; 5, multi-purpose pipe; 6, control panel; 7, drying box; 8, detection table; 9, forward and reverse motor; 10, limit groove; 11, spray head; 12, temperature sensor; 13, lower heating pipe; 14, upper heating pipe; 15, double shaft motor; 16, screw piece; 17, pneumatic finger; 18, connecting rod; 19, sliding block; 20, telescopic cylinder; 21, transmission chain; 22, non-slip pad; 23, linkage rod; 24, bracket; 25, electric transmission belt; 26, carrier; 27, suction cup; 28, color-changing light bar; 29, lifting cylinder; 30, monitor. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] As Figures 1 to 5As shown, the roll-coating aluminum plate drying color protection system of the embodiment comprises a support 1, a chain type conveying frame 2 installed at the top end of the support 1, and a drying box 7 installed above the chain type conveying frame 2, the drying box 7 is provided with an inlet and an outlet on the left and right sides, the middle part of the chain type conveying frame 2 is vertically connected, and two transmission chains 21 parallel to the front and back are installed in the chain type conveying frame 2, the transmission chains 21 are arranged in the left and right directions along the chain type conveying frame 2, and pass through the drying box 7, the input end of the transmission chain 21 is provided with a forward and reverse motor 9 through a chain wheel mechanism, the chain wheel is provided with at least two, and a corresponding shaft part is also required to be arranged, the shaft part is rotated by the forward and reverse motor 9, and then the chain wheel is rotated, the chain wheel drives the transmission chain 21 to move, and the forward and reverse motor 9 can be a servo motor provided with a forward and reverse control circuit, and a limiting mechanism is installed on the two transmission chains 21, the aluminum plate is placed on the transmission chain 21 and is limited by the limiting mechanism;

[0031] A double-shaft motor 15 is installed in the drying box 7, there are two output shafts, the rotation rates of the two output shafts are the same, screw rods 16 are installed at the output ends of the double-shaft motor 15, the screw rods 16 are large in size, the left and right screw rods 16 can be simultaneously rotated by the double-shaft motor 15, a clamping adjusting mechanism is installed in the drying box 7 outside the screw rods 16, and the clamping adjusting mechanism clamps and adjusts the aluminum plate, the drying mechanisms are installed in the drying box 7 above and below the double-shaft motor 15, and the drying mechanisms can realize synchronous drying of the upper and lower surfaces of the aluminum plate;

[0032] A detection table 8 is installed at the top end of the chain type conveying frame 2 on one side of the drying box 7, the detection table 8 is erected above the chain type conveying frame 2, the aluminum plate can pass through the detection table 8 for conveying, an electric transmission belt 25 is arranged in the vertical direction of the chain type conveying frame 2, the electric transmission belt 25 is actually provided with a transmission chain and a motor and other driving components, and can convey the aluminum plate forward and backward, a moving carrier is installed on the electric transmission belt 25, the moving carrier can move forward and backward along the electric transmission belt 25, synchronously conveys the aluminum plate below forward and backward, and realizes unloading or sorting and other operations.

[0033] Specifically, the clamping adjusting mechanism includes limiting grooves 10, sliding block parts 19, connecting rod parts 18 and clamping assemblies. The limiting grooves 10 are arranged on the inner wall surfaces of the drying box 7 on the front and rear sides of the screw part 16. The actual length is large and is arranged in a concave manner. The sliding block part 19 is arranged on the surface of the screw part 16 in a threaded sleeve manner. The surface of the sliding block part 19 is limitedly matched with the limiting grooves 10, that is, the sliding block part 19 is limitedly arranged in the limiting grooves 10, and the sliding block part 19 has a threaded hole which can be used in cooperation with the screw part 16, which is similar to a ball screw. Two sliding block parts 19 are arranged on the surfaces of the two limiting grooves 10 on the front and rear sides in a limiting manner. Thus, there are four sliding block parts 19. The two sliding block parts 19 on the front and rear sides form a group, and the connecting rod part 18 is arranged between the sliding block parts 19 in a single group. The connecting rod part 18 enables the two sliding block parts 19 to move synchronously after being connected. The clamping assembly is arranged on the surface of the connecting rod part 18 to bear the movement of the clamping assembly.

[0034] Further, the clamping assembly includes pneumatic fingers 17 and telescopic cylinders 20. Two parallel telescopic cylinders 20 are arranged on the surface of the connecting rod part 18 of a single group of sliding block parts 19 in a front and rear direction. The telescopic cylinders 20 are controlled by an external pneumatic control system and have the function of telescopic movement. The pneumatic finger 17 is arranged at the end of the telescopic cylinder 20. The pneumatic finger 17 shares a pneumatic control system with the telescopic cylinder 20. The pneumatic finger 17 can be used for clamping operation under the condition of pneumatic control. When there are four telescopic cylinders 20, there are four pneumatic fingers 17. The pneumatic fingers 17 are arranged at four parts of the aluminum plate to clamp the aluminum plate at four positions, which is beneficial to lifting the aluminum plate by means of the telescopic cylinder 20.

[0035] Further, the outer surface of the drying box 7 is provided with a hot air blower 3. The hot air blower 3 is a conventional prior art and is provided with an air pump and a heating part. The output end of the hot air blower 3 is provided with a multi-purpose pipe 5. The multi-purpose pipe 5 is a large-diameter hot air output pipe. A three-way valve part is arranged on the surface of the multi-purpose pipe 5. The two ends of the three-way valve part extend to the top cavity of the drying box 7 and below the drying box 7, respectively. Thus, the three-way valve part has a T-shaped structure as a whole, which can control the flow of hot air.

[0036] Further, the drying mechanism comprises the lower heat pipe 13, the upper heat pipe 14 and the spray head 11, the lower heat pipe 13 is installed inside the chain conveying frame 2 below the drying box 7, which is distinguished from the transmission chain 21 for use, and is actually arranged left and right along the drying box 7, the upper heat pipe 14 is installed in the top cavity of the drying box 7, the top end of the lower heat pipe 13 and the bottom end of the upper heat pipe 14 are both arranged with a plurality of spray heads 11 at equal intervals, and the input ends of the lower heat pipe 13 and the upper heat pipe 14 are both connected with the two ends of the three-way valve through pipes, under normal use, the upper heat pipe 14 is above the aluminum plate, and the lower heat pipe 13 is below the aluminum plate, when the upper and lower surfaces of the aluminum plate are dried, hot air can be sprayed outwards through the spray head 11 to dry and cure the paint on the surface of the aluminum plate, forming a color protection treatment effect.

[0037] Further, the surfaces of the lower heat pipe 13 and the upper heat pipe 14 are both installed with temperature sensors 12, the specific model of the temperature sensor 12 can be selected according to the required temperature range of the hot air, which can detect the air temperature around the upper heat pipe 14 and the lower heat pipe 13, so as to know the temperature value of the hot air and facilitate temperature control operation, and the surface of the drying box 7 on one side of the air heater 3 is installed with a control panel 6, the control panel 6 is electrically connected with the temperature sensor 12, the temperature value detected by the temperature sensor 12 can be displayed through the touch screen on the control panel 6, which is convenient for manual control operation.

[0038] Further, the limiting mechanism comprises the anti-skid pad 22, the linkage rod 23 and the bracket 24, a plurality of brackets 24 are installed on the opposite surfaces of the two transmission chains 21, so that the plurality of brackets 24 are mainly divided into two groups and arranged on the inside of the chain conveying frame 2, which is supported by the transmission chain 21, the surface area of the bracket 24 is moderate, which can support the four corners of the aluminum plate while avoiding a large contact area and affecting the drying operation, the linkage rod 23 is installed between the bottoms of the left and right brackets 24 to connect the left and right brackets 24, which is beneficial to synchronous movement, and the anti-skid pad 22 is installed at the top end of the bracket 24, which can be a high-temperature resistant silica gel pad, which can increase the friction coefficient between the bracket 24 and the aluminum plate to achieve the anti-skid effect.

[0039] Further, the moving carrier comprises the carrier 26, the suction cup 27 and the lifting cylinder 29, the carrier 26 is installed at the bottom of the electric transmission belt 25 and moves in the forward and backward directions through the electric transmission belt 25, at least two lifting cylinders 29 are installed at the bottom end of the carrier 26, the lifting cylinder 29 can move up and down, and the suction cup 27 is installed at the bottom end of the lifting cylinder 29, the suction cup 27 and the lifting cylinder 29 share a pneumatic control system and can be in contact with the aluminum plate and then perform vacuum suction treatment.

[0040] Further, the inside wall of the detection table 8 outside the lifting cylinder 29 is provided with a color-changing light bar 28. If a three-color LED light bar is selected, it can detect the drying and curing effect of the special coating on the surface of the aluminum plate by changing the color of the light bar 28. It is suitable for special situations.

[0041] Furthermore, the top end of the drying box 7 is provided with an air control box 4, which is internally provided with air supply pumps and other equipment to provide a pneumatic control system for the entire device. The top of the inlet and outlet of the drying box 7 is provided with a monitor 30, which is similar to a camera and can take pictures of the incoming and outgoing aluminum plates. It is connected to a remote transmission system and can feed the image or video of the aluminum plate to a remote control terminal for remote quality detection operation.

[0042] The use method of the embodiment is: in use, for the required processing technology, the back roll coating equipment is installed on the left side of the whole chain conveyor 2, and the front roll coating equipment is installed on the right side of the chain conveyor 2, thereby facilitating the subsequent repeated roll coating or multiple roll coating operations, and after the aluminum plate completes one back coating and front coating operation, the aluminum plate is directly conveyed to the inside of the drying box 7 through the transmission chain 21 for drying operation, and the two pipes of the three-way valve are started at the same time to provide the required hot air for the upper heat pipe 14 and the lower heat pipe 13, and slowly heat. When the aluminum plate enters the drying box 7, the double-shaft motor 15 is started to rotate, and then the screw rod 16 rotates, so that the two connecting rods 18 are close to each other, and then the distance between the two left and right pneumatic fingers 17 is changed. Along the direction of the aluminum plate, first start the single telescopic cylinder 20 to change the height of the pneumatic finger 17, and the aluminum plate height is between the two fingers of the pneumatic finger 17. After the pneumatic finger 17 contacts one side of the aluminum plate, direct clamping operation is performed. Then start the telescopic cylinder 20 on the other side to change the height of the pneumatic finger 17, and slowly start the double-shaft motor 15 to make the pneumatic finger 17 on the other side and the originally clamped pneumatic finger 17 simultaneously clamp the aluminum plate. The telescopic cylinder 20 is started to retract, so that the aluminum plate is away from the chain conveyor 2. For different process requirements, such as back or bottom roll coating twice, thick pigment, and top roll coating once, thin pigment, thereby, without affecting the transmission chain 21, the telescopic cylinder 20 is started to make the lower part closer to the lower heat pipe 13, and the top part farther away from the upper heat pipe 14, so that the air flow rate or temperature of the upper heat pipe 14 or the lower heat pipe 13 does not need to be adjusted, and the drying efficiency or temperature quality can be adjusted by means of far away or close, facilitating the whole drying color protection operation. Because the bottom surface cannot appear in people's field of vision, when quality detection of the bottom surface after drying is required, two suction cups 27 are needed to adsorb the aluminum plate, and the different extension states of the two lifting cylinders 29 connected with the suction cups 27, that is, one high and one low, make the whole aluminum plate tilt, and then the bottom surface is directly exposed to the outside, facilitating manual detection. When the detection is qualified, the aluminum plate can be directly conveyed to a specific conveying line by the electric transmission belt 25, and then transported.

[0043] Finally, it should be noted that the above description is only a preferred embodiment of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A drying and color protection system for roll-coated aluminum sheets, comprising a support (1), a chain conveyor (2) mounted on the top of the support (1), and a drying chamber (7) mounted above the chain conveyor (2), characterized in that: The chain conveyor (2) is connected vertically in the middle, and two transmission chains (21) are installed inside the chain conveyor (2) in parallel arrangement. The input end of the transmission chain (21) is equipped with a forward and reverse motor (9) through a sprocket mechanism, and a limit mechanism is installed on both transmission chains (21). The drying box (7) is equipped with a dual-axis motor (15), and the output end of the dual-axis motor (15) is equipped with a screw (16). The drying box (7) outside the screw (16) is equipped with a clamping adjustment mechanism. The drying box (7) above and below the dual-axis motor (15) is equipped with a drying mechanism. A testing platform (8) is installed at the top of the chain conveyor (2) on one side of the drying box (7). An electric drive belt (25) is arranged on the testing platform (8) along the vertical direction of the chain conveyor (2). A mobile carrier is installed on the electric drive belt (25). The clamping adjustment mechanism includes a limiting groove (10), a slider (19), a connecting rod (18), and a clamping assembly. The limiting groove (10) is set on the inner wall surface of the drying box (7) on the front and rear sides of the screw (16). The slider (19) is threadedly installed on the surface of the screw (16). The surface of the slider (19) is limited and matched with the limiting groove (10). Two sliders (19) are limited and installed on the surfaces of the two sets of limiting grooves (10) on the front and rear sides. The two sliders (19) on the front and rear sides form a group, and a connecting rod (18) is installed between each group of sliders (19). The clamping assembly is installed on the surface of the connecting rod (18). The clamping assembly includes a pneumatic finger (17) and a telescopic cylinder (20). (19) The connecting rod (18) has two parallel telescopic cylinders (20) installed on its front and rear sides. The pneumatic finger (17) is installed at the end of the telescopic cylinder (20). The outer surface of the drying box (7) is equipped with a hot air blower (3). The output end of the hot air blower (3) is equipped with a multi-purpose pipe (5). The surface of the multi-purpose pipe (5) is equipped with a three-way valve. The two ends of the three-way valve extend to the top inner cavity of the drying box (7) and the bottom of the drying box (7), respectively. The drying mechanism includes a lower heating pipe (13), an upper heating pipe (14) and a nozzle (11). The lower heating pipe (13) is installed inside the chain conveyor frame (2) below the drying box (7). The upper heating pipe (14) is installed in the top inner cavity of the drying box (7). The top of the lower heat pipe (13) and the bottom of the upper heat pipe (14) are each provided with a number of nozzles (11) at equal intervals, and the input ends of the lower heat pipe (13) and the upper heat pipe (14) are connected to the two ends of the three-way valve through pipes.

2. The roller-coated aluminum sheet drying and color protection system according to claim 1, characterized in that: Temperature sensors (12) are installed on the surfaces of the lower heat pipe (13) and the upper heat pipe (14), and a control board (6) is installed on the surface of the drying oven (7) on one side of the hot air blower (3). The control board (6) is electrically connected to the temperature sensor (12).

3. The roller-coated aluminum sheet drying and color protection system according to claim 1, characterized in that: The limiting mechanism includes an anti-slip pad (22), a linkage rod (23), and a bracket (24). Several brackets (24) are installed on the opposite surfaces of two transmission chains (21). A linkage rod (23) is installed between the bottoms of the left and right brackets (24), and an anti-slip pad (22) is installed on the top of each bracket (24).

4. The roller-coated aluminum sheet drying and color protection system according to claim 1, characterized in that: The mobile carrier includes a carrier (26), a suction cup (27) and a lifting cylinder (29). The carrier (26) is installed at the bottom of the electric drive belt (25). At least two lifting cylinders (29) are installed at the bottom of the carrier (26), and each lifting cylinder (29) is equipped with a suction cup (27).

5. The roller-coated aluminum sheet drying and color protection system according to claim 4, characterized in that: A color-changing light strip (28) is installed on the inner wall of the detection platform (8) outside the lifting cylinder (29).

6. The roller-coated aluminum sheet drying and color protection system according to claim 1, characterized in that: The top of the drying box (7) is equipped with a pneumatic control box (4), and monitors (30) are installed above the inlet and outlet of the drying box (7).

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