A rapid chemical conversion production line for thin aluminum plates and its chemical conversion process

Abstract

The present invention relates to a rapid chemical conversion production line for thin aluminum sheets and its chemical conversion process. The production line includes a coil feeder, a pickling and degreasing tank, a water washing tank, a chemical conversion film treatment machine, a water removal and drying device, a cooling device, and a reel-up machine connected in sequence. The coil feeder is a tension-controlled coil feeder, and the reel-up machine is a torque automatic proportional reel-up machine. The chemical conversion film treatment machine includes a frame, rollers arranged above the frame, and a material tank arranged below the rollers. The rollers include upper rollers and lower rollers, and spraying devices are arranged on both the upper rollers and the lower rollers. The spraying devices are used to spray chemical solutions. Through the extrusion of the upper rollers and the lower rollers, uniform spraying of the chemical solutions is achieved, and the residual chemical solutions are squeezed out. The present invention first performs pre-treatment before the chemical conversion of the aluminum sheets, then uniformly sprays chemical solutions on the surface of the aluminum sheets, dries and cools them, and uniformly performs chemical conversion treatment on the surface of the aluminum sheets, improving the operation efficiency and chemical conversion effect of the aluminum sheets, realizing automated production, and meeting the requirements of batch production.

Description

Technical Field

[0001] The present invention relates to the technical field of surface treatment of aluminum plates, and more specifically, to a rapid chemical conversion production line for thin aluminum plates and its chemical conversion process. Background Art

[0002] As a new type of surface decoration plate, aluminum core plates have been very popular in recent years. They have won recognition in the decoration market with their unique excellent physical properties and are a decoration material sought after by decoration companies, designers, and property owners.

[0003] During the long-term use of aluminum plates, chemical oxidation reactions are likely to occur on their surfaces. Therefore, generally, chemical conversion treatment is carried out on aluminum plates to form an oxide film on the surface of the aluminum plates to achieve passivation of the aluminum plates, thereby protecting the aluminum plates during their later use. Most existing aluminum plate chemical conversion equipment is equipped with a large water tank. After the aluminum plates enter the water tank, they are directly immersed in the chemical solution. This has the following disadvantages: the chemical solution on the surface of the aluminum plates is uneven, the chemical conversion effect is poor, the chemical conversion efficiency is low, it is not suitable for automated production, and it cannot meet the requirements of batch production. With the continuous development of production technology, chemical conversion equipment also needs to be continuously updated.

[0004] Therefore, providing a rapid chemical conversion production line for thin aluminum plates and its chemical conversion process to solve the problems existing in the prior art is of great significance for its application and promotion. Summary of the Invention

[0005] In view of this, the purpose of this application is to provide a rapid chemical conversion production line for thin aluminum plates and its chemical conversion process to achieve uniform spraying of chemical solution on the surface of the aluminum plates, uniformly perform chemical conversion treatment on the surface of the aluminum plates, improve the chemical conversion operation efficiency and chemical conversion effect of the aluminum plates, realize automated production, and meet the requirements of batch production.

[0006] To achieve the above purpose, the following technical solutions are provided in this application.

[0007] A rapid chemical conversion production line for thin aluminum plates includes a coil feeder, a pickling and degreasing tank, a water washing tank, a chemical conversion film treatment machine, a water removal and drying device, a cooling device, and a coiler connected in sequence;

[0008] The coil feeder is a tension-controlled coil feeder, and the coiler is a torque automatic proportional coiler;

[0009] The chemical conversion film treatment machine includes a frame, rollers arranged above the frame, and a material tank arranged below the rollers; the rollers include upper rollers and lower rollers, and spray devices are arranged on both the upper rollers and the lower rollers. The spray devices are used to spray chemical solution, and through the extrusion of the upper rollers and the lower rollers, uniform spraying of the chemical solution is achieved, and the residual chemical solution is squeezed out.

[0010] Preferably, both the unwinder and the winder are equipped with splicers, which facilitate the replacement of two rolls of materials after unwinding and before winding.

[0011] The splicer includes a workbench, first cylinders arranged at both ends of the workbench, and a transition pulley group corresponding to the first cylinders. The aluminum plates at both ends are pressed by the first cylinders on both sides, and then the bonding of the joint seam is realized through high-temperature resistant tapes.

[0012] Preferably, a cooling fan is further arranged on one side of the cooling device away from the water removal and drying device. The number of cooling fans is 3 groups, and the 3 groups of cooling fans are arranged side by side.

[0013] Preferably, a take-up roller unit is further arranged on one side of the cooling fan away from the cooling device. The take-up roller unit includes two upper and lower rollers, and the aluminum plates are respectively transmitted through the two upper and lower rollers to achieve the stable transmission of the aluminum plates from the cooling fan to the splicer.

[0014] Preferably, second transition rollers are arranged at the feeding ends of the pickling and degreasing tank and the water washing tank to achieve the stable feeding of the aluminum plates; squeezing wheel groups are arranged at the discharging ends of the pickling and degreasing tank and the water washing tank.

[0015] Preferably, a pressure roller group is arranged in the pickling and degreasing tank. The pressure roller group includes two outer pressure rollers and two inner pressure rollers. The two outer pressure rollers are respectively arranged on both sides of the pickling and degreasing tank, and the two inner pressure rollers are respectively arranged inside the two outer pressure rollers.

[0016] Preferably, fine-tuning devices are respectively arranged at both ends of the upper roller. The fine-tuning devices are used to adjust the distance between the upper roller and the lower roller to achieve the chemical conversion treatment of aluminum plates with different thickness specifications.

[0017] Preferably, the fine-tuning device includes a second cylinder and a sliding seat. The rotating shaft connected to the upper roller is fixed in the sliding seat through a bearing. The second cylinder is fixed above the vertical plate, and the second cylinder drives the sliding seat to move up and down to achieve the fine-tuning of the distance between the upper roller and the lower roller.

[0018] Preferably, the production line further includes a main power control box and an electrical operation control box.

[0019] The chemical conversion process of the above-mentioned fast chemical conversion production line for thin aluminum plates includes the following steps:

[0020] 101. The thin aluminum plate is unwound by the unwinder and first undergoes pickling and degreasing in the pickling and degreasing tank to remove the surface oil stains.

[0021] 102. The pickled and degreased thin aluminum plate passes through the water washing tank to remove the residual pickling solution on the surface.

[0022] 103. After washing with water, the thin aluminum plate is processed by a chemical conversion film processor to evenly spray the chemical conversion liquid on the surface;

[0023] 104. It is dried by a water removal and drying device. The water removal and drying device adopts a high-frequency heating method to form an oxide film on the surface;

[0024] 105. After the drying process, the thin aluminum plate is cooled by air cooling;

[0025] 106. After cooling is completed, the processed thin aluminum plate is wound by a winding machine for easy storage and transportation.

[0026] The beneficial technical effects obtained by the present invention:

[0027] 1) The present invention solves the problems existing in the existing chemical conversion equipment, such as uneven chemical solution on the surface of the aluminum plate, poor chemical conversion effect, low chemical conversion efficiency, and inadaptability to automated production. First, pre-treatment before aluminum plate chemical conversion is carried out, then the chemical solution is evenly sprayed on the surface of the aluminum plate, dried and cooled, and the surface of the aluminum plate is evenly chemically converted, improving the chemical conversion operation efficiency and effect of the aluminum plate, realizing automated production, and meeting the requirements of batch production;

[0028] 2) The present invention sets up a pickling and degreasing tank and a water washing tank. Before chemical conversion, pickling and degreasing are carried out first to remove the oil on the surface of the aluminum plate, and then water washing is carried out to remove the residual pickling solution on the surface of the aluminum plate, realizing the pre-treatment before aluminum plate chemical conversion, which is beneficial to improving the uniform chemical conversion treatment on the surface of the aluminum plate when spraying the chemical conversion liquid later;

[0029] 3) In the chemical conversion film processor of the present invention, by setting an upper roller and a lower roller, spray devices are arranged on both the upper roller and the lower roller. The spray devices are used to spray the chemical solution. Through the extrusion of the upper roller and the lower roller, the chemical solution is evenly sprayed, and the residual chemical conversion liquid is squeezed out, achieving the goal of evenly spraying the chemical conversion liquid on the surface;

[0030] 4) The present invention is beneficial to forming an oxide film on the surface of the aluminum plate by setting a water removal and drying device, shortening the chemical conversion treatment time, and improving the chemical conversion efficiency; by setting a cooling device, the cooling and temperature reduction of the aluminum plate after chemical conversion are realized, facilitating the subsequent winding operation.

[0031] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, so as to be implemented in accordance with the content of the specification, and in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following is a preferred embodiment of the present application and is described in detail in conjunction with the accompanying drawings as follows.

[0032] Those skilled in the art will understand the above and other purposes, advantages and features of the present application more clearly according to the following detailed description of the specific embodiments of the present application in conjunction with the accompanying drawings. Brief Description of the Drawings

[0033] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts do not necessarily draw according to the actual scale.

[0034] Figure 1 It is a schematic plan view of a rapid chemical conversion production line for thin aluminum plates in an embodiment of the present disclosure;

[0035] Figure 2 It is a schematic structural view of a splicing machine in an embodiment of the present disclosure;

[0036] Figure 3 It is a schematic structural view of a pickling and degreasing tank in an embodiment of the present disclosure;

[0037] Figure 4 It is a schematic structural view of a chemical conversion film treatment machine in an embodiment of the present disclosure;

[0038] Figure 5 It is a schematic structural view of a fine-tuning device in an embodiment of the present disclosure.

[0039] In the above drawings: 100, unwinder; 200, pickling and degreasing tank; 210, second transition roller; 220, water squeezing wheel group; 230, external pressure roller; 240, internal pressure roller; 300, water washing tank; 400, chemical conversion film treatment machine; 410, frame; 420, upper roller; 430, lower roller; 440, rotating shaft; 450, vertical plate; 451, notch; 452, slide rail; 460, mounting seat; 461, mounting plate; 470, material tank; 480, second cylinder; 490, sliding seat; 491, chute; 500, water removal and drying device; 600, cooling device; 610, cooling fan; 700, rewinder; 800, splicing machine; 810, workbench; 820, first cylinder; 830, transition wheel group; 900, take-up roller group. Detailed implementation manners

[0040] To make the objectives, technical solutions and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are some, but not all, of the embodiments of this application. In the following description, specific details such as specific configurations and components are provided only to assist in a comprehensive understanding of the embodiments of this application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of this application. In addition, descriptions of known functions and structures are omitted for clarity and conciseness in the embodiments.

[0041] It should be understood that the term "one embodiment" or "the embodiment" mentioned throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, the appearances of the term "one embodiment" or "the embodiment" throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures, or characteristics can be combined in one or more embodiments in any suitable manner.

[0042] In addition, this application may repeat reference numerals and / or letters in different instances. This repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or arrangements discussed.

[0043] The term "and / or" in this document is merely a description of the associated relationship of the associated objects, indicating that three relationships can exist. For example, A and / or B can represent: A exists alone, B exists alone, and both A and B exist simultaneously. The term " / and" in this document describes another associated object relationship, indicating that two relationships can exist. For example, A / and B can represent: A exists alone, and both A and B exist. In addition, the character " / " in this document generally indicates that the associated objects before and after are in an "or" relationship.

[0044] The term "at least one" in this document is merely a description of the associated relationship of the associated objects, indicating that three relationships can exist. For example, at least one of A and B can represent: A exists alone, both A and B exist simultaneously, and B exists alone.

[0045] It should also be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion.

[0046] As attached Figure 1As shown in the figure, a rapid chemical conversion production line for thin aluminum plates includes a coil feeder 100, a pickling and degreasing tank 200, a water washing tank 300, a chemical conversion film treatment machine 400, a water removal and drying device 500, a cooling device 600, and a coiler 700 that are connected in sequence.

[0047] The coil feeder 100 is a tension control type coil feeder, and the coiler 700 is a torque automatic proportional coiler.

[0048] Both the coil feeder 100 and the coiler 700 are equipped with a splicer 800, which facilitates the replacement of two coils of materials after unwinding and before winding.

[0049] As shown in the appendix Figure 2 As shown in the figure, the splicer 800 includes a workbench 810, first cylinders 820 arranged at both ends of the workbench 810, and a transition wheel group 830 corresponding to the first cylinders 820. The aluminum plates at both ends are pressed by the first cylinders 820 on both sides, and then the bonding of the joint seam is realized through a high-temperature resistant tape.

[0050] Furthermore, a first transition roller is arranged at one end of the coiler 700 close to the splicer 800 to achieve the smooth feeding and winding of the aluminum plates.

[0051] As shown in the appendix Figure 3 As shown in the figure, second transition rollers 210 are arranged at the feeding ends of the pickling and degreasing tank 200 and the water washing tank 300 to achieve the smooth feeding of the aluminum plates; squeezing wheel groups 220 are arranged at the discharging ends of the pickling and degreasing tank 200 and the water washing tank 300.

[0052] Furthermore, the number of squeezing wheel groups 220 at the discharging end of the water washing tank 300 is 2 groups, and the 2 groups of squeezing wheel groups 220 are arranged side by side, greatly improving the squeezing efficiency and effect on both sides of the aluminum plates.

[0053] Furthermore, the squeezing wheel group 220 includes an upper squeezing wheel and a lower squeezing wheel, and the aluminum plate passes between the upper squeezing wheel and the lower squeezing wheel to achieve the squeezing and discharging of water or acid on the surface of the aluminum plate.

[0054] A pressure roller group is arranged in the pickling and degreasing tank 200. The pressure roller group includes 2 outer pressure rollers 230 and 2 inner pressure rollers 240. The 2 outer pressure rollers 230 are respectively arranged on both sides of the pickling and degreasing tank 200, and the 2 inner pressure rollers 240 are respectively arranged inside the 2 outer pressure rollers 230.

[0055] Furthermore, one of the outer pressure rollers 230 and one of the inner pressure rollers 240 are both equipped with fine adjustment rollers to achieve the smooth transmission of the aluminum plates.

[0056] On the side of the cooling device 600 away from the water removal and drying device 500, there is also a cooling fan 610. The number of the cooling fans 610 is 3 groups, and the 3 groups of cooling fans 610 are arranged side by side.

[0057] On the side of the cooling fan 610 away from the cooling device 600, there is also a pick-up roller unit 900. The pick-up roller unit 900 includes 2 upper and lower rollers, and the aluminum plate is transmitted through the 2 upper and lower rollers respectively to achieve the stable transmission of the aluminum plate from the cooling fan 610 to the splicer 800.

[0058] As shown in the attached Figure 4 As shown, the chemical film treatment machine 400 includes a frame 410, rollers arranged above the frame 410, and a trough 470 arranged below the rollers; the rollers include an upper roller 420 and a lower roller 430. Spraying devices are arranged on both the upper roller 420 and the lower roller 430. The spraying devices are used to spray the chemical solution. Through the extrusion of the upper roller 420 and the lower roller 430, the uniform spraying of the chemical solution is realized, and the residual chemical solution is squeezed out.

[0059] Further, vertical plates 450 are respectively arranged on both sides of the frame 410. Rotating shafts 440 are arranged at both ends of the rollers. An installation seat 460 is arranged at the rotating shaft of the lower roller 430. The rotating shaft is fixed in the installation seat 460 through a bearing, and then the installation seat 460 is fixed on the vertical plate 450 to realize the connection between both ends of the lower roller 430 and the vertical plate 450.

[0060] Further, a notch 451 corresponding to the installation seat 460 is arranged on the support plate. An installation plate 461 is arranged on the installation seat 460, and through holes are arranged on the installation plate 461. The fixed connection between the installation plate 461 and the vertical plate 450 is realized through bolts.

[0061] Further, a discharge pipe is arranged below the trough 470. The discharge pipe is used to facilitate the discharge of the chemical solution in the trough 470.

[0062] Fine adjustment devices are respectively arranged at both ends of the upper roller 420. The fine adjustment devices are used to adjust the distance between the upper roller 420 and the lower roller 430 to realize the chemical treatment of aluminum plates with different thickness specifications.

[0063] In one embodiment, as shown in the attached Figure 5 As shown, the fine adjustment device includes a second cylinder 480 and a sliding seat 490. The rotating shaft connected to the upper roller 420 is fixed in the sliding seat 490 through a bearing. The second cylinder 480 is fixed above the vertical plate 450. The second cylinder 480 drives the up and down movement of the sliding seat 490 to realize the fine adjustment of the distance between the upper roller 420 and the lower roller 430 to adapt to the chemical treatment of aluminum plates with different specifications and sizes.

[0064] Further, sliding grooves 491 are respectively arranged on both sides of the sliding seat 490, and sliding rails 452 corresponding to the sliding grooves 491 are arranged on the inner side of the slot opening 451. The cooperation of the sliding grooves 491 and the sliding rails 452 realizes the guiding function for the up-and-down movement of the upper roller 420.

[0065] Further, the spraying device is spraying nozzles distributed at equal intervals, and the spraying nozzles are arranged on the upper roller 420 or the lower roller 430.

[0066] Further, the production line further includes a main power control box and an electrical operation control box to realize the normal operation and control of each device on the production line.

[0067] It should be noted that the specific structures and internal components of the main power control box and the electrical operation control box are not specifically limited in this application. For those skilled in the art, they belong to the prior art, so they will not be elaborated here.

[0068] The chemical conversion process of the above-mentioned rapid chemical conversion production line for thin aluminum plates includes the following steps:

[0069] 101. The thin aluminum plate is unrolled by the uncoiler 100, first undergoes pickling and degreasing in the pickling and degreasing tank 200 to remove the surface oil and grease.

[0070] 102. The pickled and degreased thin aluminum plate passes through the water washing tank 300 to remove the residual pickling solution on the surface.

[0071] 103. After water washing, the thin aluminum plate passes through the chemical conversion film treatment machine 400 to uniformly spray the chemical conversion liquid on the surface.

[0072] 104. It undergoes drying treatment by the water removal and drying device 500. The water removal and drying device 500 adopts high-frequency heating to form an oxide film on the surface.

[0073] 105. After the drying treatment, the thin aluminum plate is cooled by air cooling.

[0074] 106. After cooling is completed, the processed thin aluminum plate is wound by the coiler 700 for easy storage and transportation.

[0075] The above are only the preferred embodiments of the present invention, and it does not thereby limit the protection scope of the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any changes, modifications, substitutions, integrations, and parameter changes made to these embodiments by conventional substitutions or capable of achieving the same functions without departing from the principle and spirit of the present invention fall within the protection scope of the present invention.

Claims

1. A rapid chemical conversion production line for thin aluminum plates, characterized in that, It includes a coil feeding machine (100), a pickling and degreasing tank (200), a water washing tank (300), a chemical conversion film treating machine (400), a water removal and drying device (500), a cooling device (600), and a coil winding machine (700) which are connected in sequence. The coil feeding machine (100) is a tension control type coil feeding machine (100), and the coil winding machine (700) is a torque automatic proportional coil winding machine (700). Second transition rollers (210) are arranged at the feeding ends of the pickling and degreasing tank (200) and the water washing tank (300) to achieve smooth feeding of the aluminum plate; squeeze wheel groups (220) are arranged at the discharging ends of the pickling and degreasing tank (200) and the water washing tank (300). A pressure roller group is arranged in the pickling and degreasing tank (200). The pressure roller group includes two outer pressure rollers (230) and two inner pressure rollers (240). The two outer pressure rollers (230) are respectively arranged on both sides of the pickling and degreasing tank (200), and the two inner pressure rollers (240) are respectively arranged inside the two outer pressure rollers (230). After the aluminum plate bypasses above the second transition roller (210) and below the two outer pressure rollers (230) in sequence, it winds back from above the outer pressure roller (230) far away from the second transition roller (210), and then bypasses below the two inner pressure rollers (240) in sequence, and enters the squeeze wheel group (220) obliquely upward from above the inner pressure roller (240) close to the second transition roller (210); one of the outer pressure rollers (230) and one of the inner pressure rollers (240) are both equipped with fine adjustment rollers. The chemical conversion film treating machine (400) includes a frame (410), rollers arranged above the frame (410), and a material tank (470) arranged below the rollers; the rollers include an upper roller (420) and a lower roller (430). Spraying devices are arranged on both the upper roller (420) and the lower roller (430). The spraying devices are used for spraying the chemical solution. The bottom of the lower roller (430) is located in the material tank (470). Through the extrusion of the upper roller (420) and the lower roller (430), uniform spraying of the chemical solution is achieved, and the residual chemical solution is squeezed out. The spraying devices are spraying nozzles distributed at equal intervals. Fine adjustment devices are respectively arranged at both ends of the upper roller (420). The fine adjustment devices are used to adjust the distance between the upper roller (420) and the lower roller (430) to achieve chemical conversion treatment of aluminum plates with different thickness specifications. The fine adjustment devices include second cylinders (480) and sliding seats (490). The rotating shafts connected to the upper roller (420) are fixed in the sliding seats (490) through bearings. The second cylinders (480) are fixed above the vertical plates (450). The second cylinders (480) drive the sliding seats (490) to move up and down to achieve fine adjustment of the distance between the upper roller (420) and the lower roller (430).

2. The rapid chemical conversion production line for thin aluminum plates according to claim 1, characterized in that, The coil feeding machine (100) and the coil winding machine (700) are both equipped with splicing machines (800). The splicing machines (800) facilitate the replacement of two coils of materials after unwinding and before winding. The splicer (800) includes a workbench (810), first cylinders (820) arranged at both ends of the workbench (810), and a transition pulley group (830) corresponding to the first cylinders (820). The aluminum plates at both ends are pressed by the first cylinders (820) on both sides, and then the bonding of the feeding seam is achieved through a high-temperature resistant tape.

3. The rapid chemical conversion production line for thin aluminum plates according to claim 2, characterized in that, On one side of the cooling device (600) away from the water removal and drying device (500), there is also a cooling fan (610). The number of the cooling fans (610) is 3 groups, and the 3 groups of cooling fans (610) are arranged side by side.

4. The rapid chemical conversion production line for thin aluminum plates according to claim 3, characterized in that, On one side of the cooling fan (610) away from the cooling device (600), there is also a take-up roller unit (900). The take-up roller unit (900) includes two upper and lower rollers, and the aluminum plates are respectively transported through the two upper and lower rollers to achieve the smooth transportation of the aluminum plates from the cooling fan (610) to the splicer (800).

5. The rapid chemical conversion production line for thin aluminum plates according to claim 1, characterized in that, This production line also includes a main power control box and an electrical operation control box.

6. The chemical conversion process of the rapid chemical conversion production line for thin aluminum plates according to any one of claims 1 - 5, characterized in that, It includes the following steps:

101. The thin aluminum plate is unwound by the pay-off reel (100), first undergoes pickling and degreasing in the pickling and degreasing tank (200) to remove the surface oil stain.

102. The thin aluminum plate after pickling and degreasing passes through the water washing tank (300) to remove the residual pickling solution on the surface.

103. After water washing, the thin aluminum plate passes through the chemical conversion film treatment machine (400), and the chemical conversion liquid is evenly sprayed on the surface.

104. It undergoes a drying process by the water removal and drying device (500). The water removal and drying device (500) adopts a high-frequency heating method to form an oxide film on the surface.

105. After the drying process, the thin aluminum plate is cooled by an air-cooling method.

106. After the cooling is completed, the processed thin aluminum plate is wound by the take-up reel (700) for easy storage and transportation.

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