Surface treatment auxiliary equipment for aluminum profile substrate and treatment method of surface treatment auxiliary equipment

Abstract

The invention discloses an aluminum profile substrate surface treatment auxiliary device in the technical field of aluminum profile surface treatment, the aluminum profile substrate surface treatment auxiliary device comprises a rack and an adjusting device, guide sliding rails are arranged on the two sides of the rack, and the adjusting device comprises a motor, a two-way lead screw and two symmetrically-arranged adjusting assemblies; the adjusting assembly comprises a movable cross beam and a plurality of splayed adjusting rods, the middles of the adjusting rods are rotationally arranged, the middles of the adjusting rods are rotationally connected with the movable cross beam, the two ends of each adjusting rod are rotationally connected with sliding blocks respectively, each sliding block is connected with a hanging tool, and the sliding blocks are in sliding connection with the adjacent guide sliding rails; the two ends of the two-way lead screw are in threaded connection with nut seats which are connected to the movable cross beam. The two-way screw rod is mounted on the rack, and a motor for driving the two-way screw rod to rotate is arranged on the rack. According to the invention, batch substrate treatment is realized in a short time, the working efficiency is greatly improved, multiple cranes do not need to be arranged on line, and a large-area plant does not need to be correspondingly matched, so that the equipment and site cost is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of surface treatment of aluminum profiles, and in particular relates to surface treatment auxiliary equipment for an aluminum profile substrate and a treatment method thereof. Background Art

[0002] Traditional building decoration usually consumes a lot of wood, which leads to the deterioration of the environment on which people live. With the increase of global environmental awareness, people also begin to pay attention to environmental protection. Therefore, in order to adapt to the needs of rapid development, some new materials have emerged.

[0003] Aluminum profiles are currently a commonly used material in the fields of construction, decoration, warehousing, etc. With its advantages such as light structure, corrosion resistance, environmentally friendly raw materials, and industrial mass production, it has become a commonly used building material in people's lives and production.

[0004] At present, the output and consumption of aluminum are second only to steel, making it the second largest metal used by humans. With the widespread application of aluminum products, most aluminum products are cut and assembled from aluminum profile substrates, so the appearance of the aluminum profile substrate will affect the quality of the aluminum products. In order to improve the quality of aluminum profiles, the surface treatment of the aluminum profile substrate is often carried out. The process generally includes cleaning and deashing, alkali solution soaking, vacuum drying, passivation treatment, water washing and drying again, spraying topcoat, baking, curing, etc.

[0005] At present, multiple cranes are usually arranged in aluminum profile processing plants. In certain links such as cleaning and dust removal and spraying of topcoat, the substrate is suspended in the air using the hanger on the crane. The number of cranes on the line determines the number of aluminum profile substrates that can be processed simultaneously. When large-scale production is planned, the production method of equipping the line with multiple cranes has the following problems: (1) The maximum processing capacity of aluminum profile substrates is limited by the number of cranes, and the processing efficiency is difficult to improve; (2) Equipping a large number of cranes will cause a sharp increase in the cost of production equipment; (3) Accommodating more cranes requires a larger production site area, and the site cost of the factory building is high. Summary of the invention

[0006] The present invention aims to provide an auxiliary device for surface treatment of aluminum profile substrates to solve the problem in the prior art that the processing volume of aluminum profile substrates is greatly affected by the number of vehicles in mass production, making it difficult to achieve high-efficiency mass production.

[0007] A surface treatment auxiliary equipment for an aluminum profile substrate in the present scheme comprises a frame and an adjusting device, guide rails are arranged on both sides of the frame, the adjusting device comprises a motor, a bidirectional screw and two groups of symmetrically arranged adjusting components; the adjusting component comprises a movable crossbeam and a plurality of "eight"-shaped adjusting rods, the middle part of the adjusting rods is rotatably arranged, the middle part of the adjusting rods is rotatably connected to the movable crossbeam, the two ends of the adjusting rods are rotatably connected to sliders, each slider is connected to a hanger, and the slider is slidably connected to the adjacent guide rails; the two ends of the bidirectional screw are threadedly connected to nut seats, and the nut seats are connected to the movable crossbeam; the bidirectional screw is installed on the frame, and a motor for driving the bidirectional screw to rotate is provided on the frame.

[0008] The working principle of the present invention is: passing the two ends of the substrate through parallel hangers (i.e. two hangers at opposite positions on the adjustment component), and the hangers lift the substrate, so that multiple substrates can be hung on the device, and the substrates are suspended in the air at intervals.

[0009] When cleaning, dust removal and spraying topcoat, in order to have enough space for operation, and more importantly, to make the surface treatment more uniform, the motor is started, and the motor operation drives the bidirectional screw to rotate, and the motor rotates forward or reversely, so that the two nut seats on the bidirectional screw are close to or away from each other. Since the adjustment rod between the movable crossbeam and the guide rail is in an "eight" shape, and the middle part of the adjustment rod is rotating, the middle part of the adjustment rod is connected to the movable crossbeam, and the two ends of the adjustment rod are respectively connected to the slider, and the slider is connected to the guide rail. Therefore, when the nut seats are close to each other, the movable crossbeam is away from the guide rail, the angle of the middle part of the adjustment rod will decrease, and the sliders at both ends of the adjustment rod will slide towards each other. On the contrary, when the nut seats are away from each other, the sliders at both ends of the same adjustment rod are away from each other, and the sliders connected to two adjacent adjustment rods at the same time are close to each other. Since the hanger is fixed on the slider, the two substrates corresponding to the two mirror-symmetrical adjustment rods can be close to or away from each other.

[0010] Based on the above principle, for example, the sliders on the same guide rail are numbered, and the corresponding substrates are numbered the same as the sliders, such as No. 1, No. 2, No. 3, No. 4... When the angle of the adjusting rod decreases, No. 1 and No. 2 are close, and the corresponding substrates are close. Similarly, No. 3 and No. 4 are close, and No. 2 and No. 3 are far away. At this time, the sides of No. 1 and No. 2 substrates, No. 3 and No. 4 substrates that are far away from each other are rinsed or sprayed with topcoat. At the same time, the same process is also performed on the four sides of the substrates. Then the angle of the adjusting rod is increased, then No. 1 and No. 2 are far away, and the corresponding substrates are far away. Similarly, No. 3 and No. 4 are far away, and No. 2 and No. 3 are close. At this time, the adjacent side of No. 1 and No. 2 substrates, No. 3 and No. 4 substrates (that is, the side not processed in the previous link) is rinsed or sprayed with topcoat.

[0011] When carrying out other processes such as alkali solution soaking, a crane is used to hook the lifting ring on the frame to transfer the entire equipment and the substrate on the equipment to the workstation of the corresponding process for processing.

[0012] The beneficial technical effect of the present invention is as follows: based on the structure of the present solution and its working principle and the above-mentioned exemplified method, the present invention realizes the processing of multiple substrates in a short time, and there is no need to manually turn over the substrates one by one in the middle. The substrates are in a suspended state, and multiple substrates can be processed simultaneously conveniently and quickly in the steps of cleaning and dust removal, spraying of topcoat, and alkali solution soaking, thereby greatly improving work efficiency and greatly reducing manual labor intensity.

[0013] When this solution is used for substrate surface treatment, there is no need to equip the line with multiple cranes, so there is no need to match a large-scale factory building, thereby reducing equipment and site costs.

[0014] Furthermore, the hanger is a hanging rope, and both ends of the hanging rope are respectively connected to the sliders at both ends of the adjusting rod.

[0015] Furthermore, the suspension rope is connected to the slider via a "┻"-shaped expansion piece, the top of the expansion piece is connected to the slider, and the two ends of the suspension rope are connected to the ends of the expansion piece at both horizontal ends. The expansion piece spreads the two ends of the suspension rope apart to increase the distance, which can reduce the contact area between the suspension rope and the substrate, making it easier to process the substrate surface more comprehensively.

[0016] Furthermore, the suspension rope is slidably connected with a clamp for clamping on both sides of the aluminum profile substrate, and the clamp includes two clamping parts, and a spring is connected between the two clamping parts, and the clamping force of the clamping parts is maintained by the restoring force of the spring. Usually, mounting holes are drilled at the edge of the substrate. In the prior art, marking is performed before drilling to determine the drilling point and the size of the hole. This solution is positioned by adding a support point, eliminating the need for marking before drilling, omitting the process, improving efficiency, and saving paint.

[0017] Furthermore, the contact surface between the clamping part and the aluminum profile substrate is a circular surface. The mounting hole is usually a circular hole, and the clamping part is provided with a circular surface here so as to locate the circular mounting hole.

[0018] Furthermore, the expansion piece is connected with a fixing claw, which is used to clamp the edge of the substrate. The fixing claw can help the substrate to be in an upright state and not fall to one side.

[0019] Furthermore, the contact surface between the fixing claw and the aluminum profile substrate is a circular surface. This solution can also locate the mounting hole by the contact portion between the fixing claw and the substrate. The mounting hole is usually a circular hole. The clamping part is set as a circular surface here to locate the circular mounting hole.

[0020] Furthermore, the frame includes a top plate and side plates symmetrically arranged on both sides of the top plate, the side plates are slidably connected to the top plate, and the sliding direction of the side plates is the same as the moving direction of the nut seat. The distance between the two side plates can be easily adjusted by the sliding connection, so as to be suitable for auxiliary processing of substrates of different lengths.

[0021] The present invention also provides a surface treatment method for an aluminum profile substrate, using the auxiliary equipment provided by the present invention to assist in the surface treatment of the aluminum profile substrate, comprising the following steps:

[0022] S1. Fix the substrate: pass the two ends of the substrate through two parallel hanging ropes, the lower edge of the substrate is supported by the hanging ropes, the hanging ropes lift the substrate, the expansion piece stretches the hanging ropes to reduce the contact between the hanging ropes and the side wall of the substrate, and the fixing claws are clamped on both sides of the top of the substrate to assist in fixing the substrate to make it upright;

[0023] S2, cleaning and dust removal: start the motor to drive the two nut seats on the bidirectional screw to move toward each other, so that the movable crossbeam approaches the guide rail and the sliders at both ends of the adjusting rod approach each other, and then use a water pipe to spray and wash the outer sides of the two substrates that are close to each other; after cleaning, the motor rotates in the other direction, the nut seats on the bidirectional screw move away from each other, the movable crossbeam moves away from the guide rail, so that the sliders at both ends of the adjusting rod move away from each other, and the substrates corresponding to the adjacent sliders between adjacent adjusting rods approach each other, and the side of the substrate that was not cleaned in the previous step is rinsed after water is passed through the water pipe;

[0024] S3, alkali solution soaking: Use a crane to hook up the lifting ring on the frame, lift the entire processing equipment and the substrate on the equipment and transfer it to a container filled with alkali solution, so that the substrate is immersed in the alkali solution for soaking treatment;

[0025] S4, vacuum drying: After soaking in alkali solution, the crane lifts the processing equipment and the substrate on the equipment again to drip the alkali solution and transfer it to the vacuum drying equipment, and then removes the substrate from the lifting rope and performs vacuum drying;

[0026] S5, passivation treatment: the dried substrate is taken out from the vacuum drying equipment and then subjected to passivation treatment;

[0027] S6, washing and drying again: the passivated substrate is fixed on the hanging rope by the method of S1, and then washed by the method of S2, and the entire processing equipment and the substrate on the equipment are lifted again by the crane and transferred to the drying room for drying and then taken out;

[0028] S7, spraying topcoat: adopt the S2 method, replace the water pipe with a paint spraying equipment to spray paint on the surface of the substrate, and finally heat and bake to solidify the paint into a stable coating on the surface of the substrate.

[0029] In the method, the surface treatment auxiliary equipment of the aluminum profile substrate is used for auxiliary treatment. During the treatment process, the spacing between the substrates is adjusted in the cleaning and dust removal steps and the topcoat spraying steps, which improves the treatment efficiency, enhances the treatment effect, and makes the surface treatment of the substrate more comprehensive and uniform, thereby improving the quality of the aluminum profile substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a front view of a surface treatment auxiliary device for an aluminum profile substrate in Example 1 of the present invention;

[0031] Figure 2 for Figure 1 The enlarged view of point A in the middle;

[0032] Figure 3 It is a side view of a partial structure of a surface treatment auxiliary device for an aluminum profile substrate in Example 1 of the present invention;

[0033] Figure 4 This is a top view of the partial structure of a surface treatment auxiliary equipment for an aluminum profile substrate in Example 1 of the present invention. DETAILED DESCRIPTION

[0034] The following is further described in detail through specific implementation methods:

[0035] The figure marks in the drawings of the specification include: lifting ring 1, top plate 2, bidirectional screw 3, nut seat 4, motor 5, screw 6, side plate 7, lifting rope 8, base plate 9, movable cross beam 10, rotating shaft 11, adjusting rod 12, slider 13, guide rail 14, expansion piece 15, fixing claw 16.

[0036] Embodiment 1 is basically as attached Figures 1 to 4 As shown: A surface treatment auxiliary equipment for an aluminum profile substrate, including a frame, an adjustment device and a plurality of lifting ropes 8, as shown in the figure, there are sixteen lifting ropes 8, the frame includes a top plate 2 and side plates 7 symmetrically connected to the two ends of the top plate 2, the side plates 7 are slidably connected to the top plate 2, the two side plates 7 can be adjusted to move away from or close to each other, the side plates 7 and the top plate 2 are limited and fixed by screws 6, and four lifting rings 1 arranged in a rectangular array are provided on the top plate 2 of the frame.

[0037] The adjusting device comprises a motor 5, a bidirectional screw rod 3 and two groups of symmetrically arranged adjusting components.

[0038] The adjustment component includes a movable crossbeam 10, a guide rail 14 and four "eight"-shaped adjustment rods 12. The middle part of the adjustment rod 12 is rotatable and is fixed by a rotating shaft 11. The middle part of the adjustment rod 12 is rotatably connected to the movable crossbeam 10. That is, after the rotating shaft 11 is fixedly connected to the movable crossbeam 10, the adjustment rod 12 and the movable crossbeam 10 are rotatably connected through the rotating shaft 11. A groove is opened in the length direction of the movable crossbeam 10 for installing the rotating shaft 11 and becoming a movable space for the adjustment rod 12 to rotate.

[0039] The two ends of the adjusting rod 12 are rotatably connected with a slider 13, the slider 13 is slidably connected with the guide rail 14, and the movable crossbeam 10 is connected with the nut seat 4 through a connecting rod; each slider 13 is connected with a "┻"-shaped expansion piece 15, the top of the expansion piece 15 is connected with the slider 13, and the two ends of the suspension rope 8 are connected to the ends of the expansion piece 15 at both ends. The two parallel suspension ropes 8 are used to be sleeved on the two ends of the base plate 9, and the suspension ropes 8 are made of alkali-resistant and corrosion-resistant materials. The expansion piece 15 is connected with a fixed claw 16, and the fixed claw 16 is used to clamp the base plate 9.

[0040] The guide rail 14 is fixedly connected to the side plate 7, the nut seats 4 in the two adjustment assemblies are respectively threadedly connected to the two ends of the bidirectional screw rod 3, the ends of the bidirectional screw rod 3 are rotatably connected to the side plate 7, and the motor 5 is used to drive the bidirectional screw rod 3 to rotate.

[0041] Embodiment 2 is different from Embodiment 1 in that: a clamp for clamping the two sides of the aluminum profile substrate is slidably connected to the suspension rope, the clamp includes two clamping parts, a spring is connected between the two clamping parts, and the clamping force of the clamping parts is maintained by the restoring force of the spring. The contact surface between the clamping part and the aluminum profile substrate is a circular surface.

[0042] Embodiment 3, using the equipment described in embodiment 1 to assist in surface treatment of an aluminum profile substrate, comprises the following steps:

[0043] S1. Fix the substrate 9: pass the two ends of the substrate 9 through two parallel hanging ropes 8, the lower edge of the substrate 9 abuts against the hanging ropes 8, the hanging ropes 8 lift the substrate 9, the expansion piece 15 spreads the hanging ropes 8 to reduce the contact between the hanging ropes 8 and the side wall of the substrate 9, and the fixing claws 16 are clamped on both sides of the top of the substrate 9 to assist in fixing the substrate 9 so that the substrate 9 stands upright;

[0044] S2, cleaning and dust removal: start the motor 5 to drive the two nut seats 4 to move toward each other on the bidirectional screw rod 3, so that the movable crossbeam 10 approaches the guide rail 14 so that the sliders 13 at both ends of the adjusting rod 12 are close to each other, and then use a water pipe to spray water on the outer sides of the two substrates 9 close to each other; after cleaning, the motor 5 rotates in the other direction, the nut seats 4 move away from each other on the bidirectional screw rod 3, and the movable crossbeam 10 moves away from the guide rail 14, so that the sliders 13 at both ends of the adjusting rod 12 move away from each other, and the substrates 9 corresponding to the adjacent sliders 13 between adjacent adjusting rods 12 are close to each other, and the side of the substrate 9 that was not cleaned in the previous step is rinsed after water is passed through the water pipe;

[0045] S3, alkali solution soaking: use the crane to hook up the lifting ring 1 on the frame, lift the entire processing equipment and the substrate 9 on the equipment and transfer them to a container filled with alkali solution, so that the substrate 9 is immersed in the alkali solution for soaking treatment;

[0046] S4, vacuum drying: After soaking in alkali solution, the driving crane lifts up the processing equipment and the substrate 9 on the equipment again to drip the alkali solution and transfer it to the vacuum drying equipment, and then removes the substrate 9 from the hanging rope 8 and performs vacuum drying;

[0047] S5, passivation treatment: the dried substrate 9 is taken out from the vacuum drying device and then subjected to passivation treatment;

[0048] S6, washing and drying again: the passivated substrate 9 is fixed on the hanging rope 8 by the method of S1, and then washed by the method of S2, and the entire processing equipment and the substrate 9 on the equipment are lifted again by the crane and transferred to the drying room for drying and then taken out;

[0049] S7, spraying topcoat: adopt the method of S2, replace the water pipe with a paint spraying device to spray paint on the surface of the substrate 9, and finally heat and bake to solidify the paint on the surface of the substrate 9 into a stable coating.

[0050] When cleaning, dust removal and spraying topcoat, in order to have enough space for operation, and more importantly, to make the surface treatment more uniform, the motor 5 is started, and the motor 5 drives the bidirectional screw 3 to rotate. The motor 5 rotates forward or reversely, so that the two nut seats 4 on the bidirectional screw 3 are close to or away from each other. Since the adjustment rod 12 between the movable crossbeam 10 and the guide rail 14 is in an "eight" shape, and the middle part of the adjustment rod 12 is rotating, the middle part of the adjustment rod 12 is connected to the movable crossbeam 10, and the two ends of the adjustment rod 12 are respectively connected to the slider 13, and the slider 13 is connected to the guide rail 14. When the nut seats 4 are close to each other, the movable crossbeam 10 is away from the guide rail 14, the angle of the middle part of the adjustment rod 12 will decrease, and the sliders 13 at both ends of the adjustment rod 12 will slide towards each other. On the contrary, when the nut seats 4 are away from each other, the sliders 13 at both ends of the same adjustment rod 12 are away from each other, and the sliders 13 connected to two adjacent adjustment rods 12 are close to each other. Since the suspension rope 8 is fixed on the slider 13, the two base plates 9 corresponding to the two mirror-symmetrical adjustment rods 12 can move closer to or farther from each other.

[0051] Based on the above principle, for example, the sliders 13 located on the same guide rail 14 are numbered, and the corresponding substrates 9 are numbered the same as the sliders 13, such as No. 1, No. 2, No. 3, No. 4..., when the angle of the adjusting rod 12 decreases, No. 1 and No. 2 are close, and the corresponding substrates 9 are close. Similarly, No. 3 and No. 4 are close, and No. 2 and No. 3 are far away. At this time, the sides of No. 1 and No. 2 substrates 9 and No. 3 and No. 4 substrates 9 that are far away from each other are washed or sprayed with topcoat, and the same process is also performed on the four sides of the substrates 9, and then the angle of the adjusting rod 12 is increased, then No. 1 and No. 2 are far away, and the corresponding substrates 9 are far away. Similarly, No. 3 and No. 4 are far away, and No. 2 and No. 3 are close. At this time, the side adjacent to No. 1 and No. 2 substrates 9 and No. 3 and No. 4 substrates 9 (that is, the side not processed in the previous link) is washed or sprayed with topcoat.

[0052] When other processes such as alkali solution soaking are carried out, the lifting ring 1 on the frame is hooked by a crane, and the entire equipment and the substrate 9 on the equipment are transferred to the station of the corresponding process for processing.

Claims

1. A surface treatment auxiliary equipment for aluminum profile substrate, characterized in that: It includes a frame and an adjusting device. Guide rails are arranged on both sides of the frame. The adjusting device includes a motor, a bidirectional screw rod and two groups of symmetrically arranged adjusting components. The adjusting component includes a movable crossbeam and a plurality of "eight"-shaped adjusting rods. The middle part of the adjusting rod is rotatably arranged, and the middle part of the adjusting rod is rotatably connected to the movable crossbeam. Both ends of the adjusting rod are rotatably connected with sliders, each slider is connected with a hanger, and the slider is slidably connected with the adjacent guide rails. Both ends of the bidirectional screw rod are threadedly connected with nut seats, and the nut seats are connected to the movable crossbeam. The bidirectional screw rod is installed on the frame, and a motor for driving the bidirectional screw rod to rotate is arranged on the frame.

2. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 1, characterized in that: The hanging device is a hanging rope, and the two ends of the hanging rope are respectively connected to the sliders at the two ends of the adjusting rod.

3. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 2 is characterized in that: The suspension rope is connected to the slider via a "┻"-shaped expansion piece, the top of the expansion piece is connected to the slider, and the two ends of the suspension rope are connected to the ends of the two horizontal ends of the expansion piece.

4. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 2 or 3, characterized in that: The suspension rope is slidably connected with a clamp for clamping on both sides of the aluminum profile substrate. The clamp includes two clamping parts, a spring is connected between the two clamping parts, and the clamping force of the clamping parts is maintained by the restoring force of the spring.

5. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 4, characterized in that: The contact surface between the clamping portion and the aluminum profile substrate is a circular surface.

6. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 3, characterized in that: The expansion piece is connected with a fixing claw, and the fixing claw is used for clamping the edge of the substrate.

7. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 6, characterized in that: The contact surface between the fixing claw and the aluminum profile substrate is a circular surface.

8. The surface treatment auxiliary equipment for aluminum profile substrate according to claim 7, characterized in that: The frame comprises a top plate and side plates symmetrically arranged on both sides of the top plate, the side plates are slidably connected to the top plate, and the sliding direction of the side plates is the same as the moving direction of the nut seat.

9. A surface treatment method for an aluminum profile substrate, characterized in that: The surface treatment of the aluminum profile substrate is assisted by the device according to claim 8, comprising the following steps: S1. Fix the substrate: pass the two ends of the substrate through two parallel hanging ropes, the lower edge of the substrate is supported by the hanging ropes, the hanging ropes lift the substrate, the expansion piece stretches the hanging ropes to reduce the contact between the hanging ropes and the side wall of the substrate, and the fixing claws are clamped on both sides of the top of the substrate to assist in fixing the substrate to make it upright; S2, cleaning and dust removal: start the motor to drive the two nut seats on the bidirectional screw to move toward each other, so that the movable crossbeam approaches the guide rail and the sliders at both ends of the adjusting rod approach each other, and then use a water pipe to spray and wash the outer sides of the two substrates that are close to each other; after cleaning, the motor rotates in the other direction, the nut seats on the bidirectional screw move away from each other, the movable crossbeam moves away from the guide rail, so that the sliders at both ends of the adjusting rod move away from each other, and the substrates corresponding to the adjacent sliders between adjacent adjusting rods approach each other, and the side of the substrate that was not cleaned in the previous step is rinsed after water is passed through the water pipe; S3, alkali solution soaking: Use a crane to hook up the lifting ring on the frame, lift the entire processing equipment and the substrate on the equipment and transfer it to a container filled with alkali solution, and soak the substrate in the alkali solution for soaking treatment; S4, vacuum drying: After soaking in alkali solution, the crane lifts the processing equipment and the substrate on the equipment again to drip the alkali solution and transfer it to the vacuum drying equipment, and then removes the substrate from the lifting rope and performs vacuum drying; S5, passivation treatment: the dried substrate is taken out from the vacuum drying equipment and then subjected to passivation treatment; S6, washing and drying again: the passivated substrate is fixed on the hanging rope by the method of S1, and then washed by the method of S2, and the entire processing equipment and the substrate on the equipment are lifted again by the crane and transferred to the drying room for drying and then taken out; S7, spraying topcoat: adopt the S2 method, replace the water pipe with a paint spraying equipment to spray paint on the surface of the substrate, and finally heat and bake to solidify the paint into a stable coating on the surface of the substrate.

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