Double-sided roller coater for plates

Abstract

The utility model discloses a double-sided roller coater for plates and relates to the technical field of metal surface treatment. The double-face roller coater comprises a first roller coating assembly, a lifting roller coating assembly and a second roller coating assembly. The first roller coating assembly comprises a first material disc capable of containing coating, a first coating roller capable of adhering the coating from the first material disc, and a metering roller capable of adhering the coating from the first coating roller. The lifting roller coating assembly comprises an upper coating roller capable of adhering coating from a metering roller. The second roller coating assembly comprises a second material disc capable of containing the coating, a second coating roller capable of adhering the coating from the second material disc, and a lower coating roller capable of adhering the coating from the second coating roller. And a plate gap for a plate material to pass through is formed between the upper coating roller and the lower coating roller. Wherein the upper coating roller can be attached to the upper surface of a plate material, and the lower coating roller can be attached to the lower surface of the plate material. Through the innovative three-roller structural design, the problem of uneven coating in the traditional waxing process can be effectively solved, and the uniformity of double-sided coating of the aluminum material is ensured.

Description

Technical Field

[0001] This utility model relates to the field of metal surface treatment technology, and more specifically, to a double-sided roller coating machine for sheet metal. Background Technology

[0002] In the field of metal surface treatment, especially in the waxing process for sheet materials such as aluminum, electrostatic spraying technology has traditionally been widely used. While this technology can achieve coating adhesion, it has significant limitations when applying uniform coating to both sides. First, the electrostatic spraying process is relatively complex, requiring multiple steps to complete the entire coating process, which not only increases the operational difficulty but also raises production costs. Second, because the coating thickness is difficult to control precisely during electrostatic spraying, the final product coating is inconsistent, affecting the consistency and stability of product quality.

[0003] To address these issues and improve waxing efficiency and uniformity, double-sided roller coating technology has received increasing attention in recent years. However, existing roller coating machines on the market still face a series of challenges. For example, in terms of roller design, current equipment often cannot effectively prevent wax loss during the coating process, which directly affects coating quality. The paint supply system is not precise enough, making it difficult to guarantee consistent wax layer thickness. The control system has limited intelligence and weak adaptability to different aluminum materials. In addition, the design of the double-sided coating mechanism needs further optimization to ensure uniform and high-quality coating results on both the upper and lower surfaces. Utility Model Content

[0004] This invention provides a double-sided roller coating machine for sheet metal, which aims to improve at least one of the above-mentioned technical problems.

[0005] To solve the above-mentioned technical problems, this utility model provides a double-sided roller coating machine for sheet materials, which includes a first roller coating assembly, a lifting roller coating assembly, and a second roller coating assembly.

[0006] The first roller coating assembly includes a first tray capable of holding coating material, a first coating roller capable of adhering coating material to the first tray, and a metering roller capable of adhering coating material to the first coating roller.

[0007] The lifting roller coating assembly includes an upper coating roller capable of adhering coating material to the metering roller.

[0008] The second roller coating assembly includes a second tray capable of holding coating material, a second coating roller capable of adhering coating material from the second tray, and a bottom coating roller capable of adhering coating material from the second coating roller.

[0009] A gap is formed between the upper coating roller and the lower coating roller to allow the sheet material to pass through. The upper coating roller is able to adhere to the upper surface of the sheet material, and the lower coating roller is able to adhere to the lower surface of the sheet material.

[0010] In an optional embodiment, the metering roller is located between the first coating roller and the top coating roller, and the height of the metering roller is higher than that of the first coating roller and the top coating roller.

[0011] In an alternative embodiment, the lowermost end of the metering roller is located above the first tray.

[0012] In an optional embodiment, the double-sided roller coater further includes a calibration assembly. The calibration assembly includes a calibration roller. The calibration roller, the metering roller, and the lower coating roller are spaced apart, with the two rollers at both ends located on the same side of the gap between the sheet materials. Preferably, the calibration assembly further includes a first linear movement member engaged with the calibration roller. The first linear movement member is configured to adjust the height of the calibration roller.

[0013] In an optional embodiment, the first roller coating assembly further includes a second linear movement member and a third linear movement member. The second linear movement member engages with the first coating roller and the metering roller and is configured to move the first coating roller and the metering roller along a first direction. The third linear movement member engages with the first coating roller or the metering roller and is configured to move the first coating roller or the metering roller to adjust the gap between the first coating roller and the metering roller.

[0014] In an optional embodiment, the lifting roller coating assembly further includes a fourth linear movement member engaged with the upper coating roller. The fourth linear movement member is configured to adjust the height of the upper coating roller to adjust the gap between the metering roller and the upper coating roller.

[0015] In an optional embodiment, the second roll coating assembly further includes a fifth linear movement member and a sixth linear movement member. The fifth linear movement member engages with the lower coating roller and the second coating roller and is configured to move the lower coating roller and the second coating roller along a second direction. The sixth linear movement member engages with the second coating roller or the lower coating roller and is configured to move the second coating roller or the lower coating roller to adjust the gap between the second coating roller and the lower coating roller.

[0016] In an optional embodiment, the second roller coating assembly further includes a seventh linear movement member. The seventh linear movement member engages with the second tray, the lower coating roller, and the second coating roller, and is configured to adjust the height of the second tray, the lower coating roller, and the second coating roller.

[0017] In an optional embodiment, the double-sided roller coater further includes a first blade assembly and a second blade assembly. The first blade assembly is configured to scrape paint from the first coating roller. The second blade assembly is configured to scrape paint from the second coating roller. Each blade assembly includes a scraper blade and a blade adjustment member engaged with the scraper blade. The blade adjustment member is configured to adjust the angle and extension distance of the scraper blade.

[0018] By adopting the above technical solution, the present invention can achieve the following technical effects:

[0019] This utility model discloses a double-sided roller coating machine for sheet metal. Through an innovative three-roller structure design, it effectively solves the problem of uneven coating in traditional waxing processes, ensuring uniform coating on both sides of aluminum materials. Furthermore, the optimized roller design and control system reduce wax waste, simplify the process, and lower production costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the specific embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0021] Figure 1 This is a half-section view of a double-sided roller coating machine.

[0022] Figure 2 This is a half-section view of the scraper assembly.

[0023] Figure 3 This is a half-section view of the first roller coating assembly.

[0024] Figure 4 This is a half-section view of the lifting roller coating assembly.

[0025] Figure 5 This is a half-section view of the calibration component.

[0026] Figure 6 This is a half-section view of the first material tray.

[0027] Figure 7 This is a half-section view of the second roller coating assembly.

[0028] Figure 8 This is a half-section view of the second feed tray.

[0029] The markings in the diagram are: 1-First linear moving component, 2-Correction roller, 3-Second linear moving component, 4-Third linear moving component, 5-First coating roller, 6-Metering roller, 7-First material tray, 8-Upper coating roller, 9-Sheet material, 10-Lower coating roller, 11-Second coating roller, 12-Sixth linear moving component, 13-Fifth linear moving component, 14-Second material tray, 15-Seventh linear moving component, 16-Fourth linear moving component, 17-Scraper adjusting component, 18-Scraper blade. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0031] Depend on Figures 1 to 8 As shown, this utility model embodiment provides a double-sided roller coating machine for sheet materials, comprising a first roller coating assembly, a lifting roller coating assembly, and a second roller coating assembly. The first roller coating assembly includes a first tray 7 for holding paint, a first paint roller 5 for adhering paint to the first tray 7, and a metering roller 6 for adhering paint to the first paint roller 5. The lifting roller coating assembly includes an upper coating roller 8 for adhering paint to the metering roller 6. The second roller coating assembly includes a second tray 14 for holding paint, a second paint roller 11 for adhering paint to the second tray 14, and a lower coating roller 10 for adhering paint to the second paint roller 11. A gap is formed between the upper coating roller 8 and the lower coating roller 10 for the sheet material 9 to pass through. The upper coating roller 8 is able to adhere to the upper surface of the sheet material 9, and the lower coating roller 10 is able to adhere to the lower surface of the sheet material 9.

[0032] This utility model discloses a double-sided roller coating machine for sheet metal. Through an innovative three-roller structure design, it effectively solves the problem of uneven coating in traditional waxing processes, ensuring uniform coating on both sides of aluminum materials. Furthermore, the optimized roller design and control system reduce wax waste, simplify the process, and lower production costs.

[0033] In this embodiment, the lifting roller coating assembly only includes the top coating roller 8. In other embodiments, the lifting roller coating assembly may include at least two continuous rollers in surface contact, provided that at least one roller is engaged with the metering roller 6 and at least one roller is in contact with the upper surface of the sheet material 9, it falls within the protection scope of this utility model.

[0034] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 As shown, the metering roller 6 is located between the first coating roller 5 and the top coating roller 8, and the height of the metering roller 6 is higher than that of the first coating roller 5 and the top coating roller 8. Preferably, the lowermost end of the metering roller 6 is located above the first material tray 7.

[0035] Specifically, the traditional dual-roller design, with separate wax-carrying and wax-applying rollers, is prone to wax overflow, resulting in uneven coating on the surface of the board material 9. This embodiment of the invention utilizes a three-roller design—a first coating roller 5, a metering roller 6, and an upper coating roller 8—allowing excess wax to flow back from the wax-carrying roller to the wax tray, reducing wax overflow and better ensuring the uniformity of the coating on the surface of the board material 9.

[0036] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 5 As shown, the double-sided roller coating machine also includes a calibration assembly. The calibration assembly includes a calibration roller 2. The calibration roller 2, the metering roller 6, and the lower coating roller 10 are spaced apart, with the two rollers at both ends located on the same side of the gap between the sheet materials. Preferably, the calibration assembly further includes a first linear movement member 1 engaged with the calibration roller 2. The first linear movement member 1 is configured to adjust the height of the calibration roller 2.

[0037] In this embodiment, the correction roller 2 and the lower coating roller 10 are located on the same side of the gap between the sheet materials, and the metering roller 6 is higher than the correction roller 2 and the lower coating roller 10. Specifically, the correction roller 2, the upper coating roller 8, and the lower coating roller 10 can form a three-point clamping structure, thereby tightly adhering to the surface of the sheet material 9.

[0038] When the raw material of sheet material 9 is in a roll structure, it may bend to some extent after being unrolled. In addition, when the thickness of sheet material 9 is relatively thin, it may also deform to some extent. The straightening roller 2 can fully flatten the sheet material 9 to ensure the uniformity of the subsequent coating.

[0039] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 3As shown, the first roller coating assembly further includes a second linear movement member 3 and a third linear movement member 4. The second linear movement member 3 engages with the first coating roller 5 and the metering roller 6, and is configured to move the first coating roller 5 and the metering roller 6 along a first direction. The third linear movement member 4 engages with either the first coating roller 5 or the metering roller 6, and is configured to move either the first coating roller 5 or the metering roller 6 to adjust the gap between the first coating roller 5 and the metering roller 6. Preferably, as... Figure 1 and Figure 4 As shown, the lifting roller coating assembly further includes a fourth linear movement member 16 engaged with the top coating roller 8. The fourth linear movement member 16 is configured to adjust the height of the top coating roller 8 to adjust the gap between the metering roller 6 and the top coating roller 8.

[0040] In this embodiment, the third linear moving member 4 engages with the first coating roller 5. The first coating roller 5 and the metering roller 6 move horizontally synchronously via the second linear moving member 3. The first coating roller 5 moves horizontally via the third linear moving member 4, thereby adjusting the gap between the first coating roller 5 and the metering roller 6. The top coating roller 8 moves up and down via the fourth linear moving member 16, adjusting the gap between the top coating roller 8 and the metering roller 6. By controlling the gaps between the first coating roller 5 and the metering roller 6, and between the top coating roller 8 and the metering roller 6, the amount of coating on the rollers can be well controlled, thereby controlling the thickness and uniformity of the coating film on the surface of the coated board material 9.

[0041] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 7 As shown, the second roller coating assembly further includes a fifth linear movement member 13 and a sixth linear movement member 12. The fifth linear movement member 13 engages with the lower coating roller 10 and the second coating roller 11, and is configured to move the lower coating roller 10 and the second coating roller 11 along a second direction. The sixth linear movement member 12 engages with the second coating roller 11 or the lower coating roller 10, and is configured to move the second coating roller 11 or the lower coating roller 10 to adjust the gap between the second coating roller 11 and the lower coating roller 10.

[0042] In this embodiment, the sixth linear moving member 12 engages with the second coating roller 11. The second coating roller 11 and the lower coating roller 10 move horizontally synchronously via the fifth linear moving member 13. The second coating roller 11 moves horizontally via the sixth linear moving member 12, thereby adjusting the gap between the second coating roller 11 and the lower coating roller 10.

[0043] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 7 As shown, the second roller coating assembly further includes a seventh linear movement member 15. The seventh linear movement member 15 is engaged with the second tray 14, the lower coating roller 10, and the second paint roller 11, and is configured to adjust the height of the second tray 14, the lower coating roller 10, and the second paint roller 11.

[0044] Specifically, the seventh linear moving member 15 is used for the overall lifting and lowering of the second roller coating assembly. Through the first linear moving member 1 and the seventh linear moving member 15, the assemblies containing the correction roller 2 and the lower coating roller 10 can be driven to move downward as a whole, thereby increasing the gap between the plates.

[0045] In this embodiment, both the first linear motion component 1 and the seventh linear motion component 15 are driven by automated components such as hydraulic cylinders, pneumatic cylinders, or linear motors. The second to sixth linear motion components 12 are all worm gear structures that are manually driven by handwheels.

[0046] In other embodiments, the first to seventh linear moving components 15 are all driven by automated structures such as lead screws and sliders. This utility model does not make specific limitations on this, as long as it can adjust the position of the object it is engaging according to the required position and precision.

[0047] Based on the above embodiments, in an optional embodiment of the present invention, such as... Figure 1 and Figure 2 As shown, the double-sided roller coating machine further includes a first scraper assembly and a second scraper assembly. The first scraper assembly is configured to scrape paint from the first coating roller 5. The second scraper assembly is configured to scrape paint from the second coating roller 11. The scraper assembly includes a scraper blade 18 and a scraper adjustment member 17 engaged with the scraper blade 18. The scraper adjustment member 17 is configured to adjust the angle and extension distance of the scraper blade 18.

[0048] Specifically, the scraper can remove excess wax, resulting in a more uniform wax film thickness on the upper and lower coating rollers 10 and a better coating effect. The scraper adjustment component 17 includes a toothed disc engaged with the scraper blade 18 and a screw engaged with the toothed disc. The angle of the toothed disc is adjusted by the screw. The scraper adjustment component 17 also includes a base engaged between the toothed disc and the scraper blade 18. The base is configured to fix the scraper after its position is adjusted, thereby adjusting the extension length of the scraper.

[0049] It should be noted that the first tray 7 can be engaged with the second linear moving member 3 or the third moving member; this utility model does not specifically limit this. The height of the second tray 14 is adjusted by the eighth linear moving member. The eighth linear moving member includes a worm gear reducer.

[0050] The working principle of the double-sided roller coating machine is explained below using aluminum sheet and strip as raw material.

[0051] The aluminum strip moves from left to right, and both the upper and lower coating rollers 10 operate in a sequential coating manner; the coating roller, metering roller 6, and coating roller are driven by the roller shaft head connected by a motor and a cross universal joint.

[0052] The first coating roller 5 of the first coating roller assembly is immersed in the first material tray 7, which is in a liquid state after heating. When rotating, it brings the wax to the surface of the metering roller 6 in a counterclockwise direction. The metering roller 6 rotates clockwise, and at the same time, the pressure between the two rollers is adjusted by hand-cranking the turbine (adjusted according to the required amount of wax) to squeeze all the excess wax back into the first material tray 7 below. The wax adhering to the metering roller 6 is then brought to the upper coating roller 8. The upper coating roller 8 rotates counterclockwise and adheres to the aluminum plate, thereby applying the wax to the surface of the aluminum plate.

[0053] The second coating roller 11 of the second coating roller assembly is also immersed in the second material tray 14, which is in a liquid state after heating. When rotating, it brings the wax to the surface of the lower coating roller 10 in a counterclockwise direction. The lower coating roller 10 rotates clockwise and adheres to the aluminum plate, thereby applying the wax to the lower surface of the aluminum plate.

[0054] Preferably, the coating roller, metering roller 6, and paint roller all adopt a hollow design, with water pipes inside to deliver water to the drive side and then back to the operating side via the inner surface of the rollers. A rotary joint for supplying hot water is installed on the shaft head on the operating side. At the same time, a heating coil is installed at the bottom of the wax disc to heat the solid wax into a liquid state.

[0055] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A double-sided roller coating machine for sheet metal, characterized in that, It includes a first roller coating assembly, a lifting roller coating assembly, and a second roller coating assembly; The first roller coating assembly includes a first tray (7) capable of holding coating material, a first coating roller (5) capable of adhering coating material from the first tray (7), and a metering roller (6) capable of adhering coating material from the first coating roller (5). The lifting roller coating assembly includes an upper coating roller (8) capable of adhering coating material from the metering roller (6); The second roller coating assembly includes a second tray (14) capable of holding coating material, a second coating roller (11) capable of adhering coating material from the second tray (14), and a bottom coating roller (10) capable of adhering coating material from the second coating roller (11). A gap is formed between the upper coating roller (8) and the lower coating roller (10) for the sheet material (9) to pass through; wherein the upper coating roller (8) can adhere to the upper surface of the sheet material (9) and the lower coating roller (10) can adhere to the lower surface of the sheet material (9).

2. The double-sided roller coating machine for sheet metal according to claim 1, characterized in that, The metering roller (6) is located between the first coating roller (5) and the top coating roller (8), and the height of the metering roller (6) is higher than that of the first coating roller (5) and the top coating roller (8).

3. The double-sided roller coating machine for sheet metal according to claim 1, characterized in that, The lowermost end of the metering roller (6) is located above the first material tray (7).

4. The double-sided roller coating machine for sheet metal according to claim 1, characterized in that, The double-sided roller coating machine also includes a correction component; the correction component includes a correction roller (2); the correction roller (2), the metering roller (6) and the bottom coating roller (10) are spaced apart, and the two rollers at both ends are located on the same side of the gap between the plates.

5. A double-sided roller coating machine for sheet metal according to claim 4, characterized in that, The correction assembly further includes a first linear motion member (1) engaged with the correction roller (2); the first linear motion member (1) is configured to adjust the height of the correction roller (2).

6. A double-sided roller coating machine for sheet metal according to any one of claims 1 to 5, characterized in that, The first roller coating assembly further includes a second linear motion component (3) and a third linear motion component (4); The second linear movement member (3) engages with the first paint roller (5) and the metering roller (6) and is configured to move the first paint roller (5) and the metering roller (6) along a first direction. The third linear moving member (4) engages with the first paint roller (5) or the metering roller (6) and is configured to move the first paint roller (5) or the metering roller (6) to adjust the gap between the first paint roller (5) and the metering roller (6).

7. A double-sided roller coating machine for sheet metal according to any one of claims 1 to 5, characterized in that, The lifting roller coating assembly also includes a fourth linear movement member (16) engaged with the top coating roller (8); the fourth linear movement member (16) is configured to adjust the height of the top coating roller (8) to adjust the gap between the metering roller (6) and the top coating roller (8).

8. A double-sided roller coating machine for sheet metal according to any one of claims 1 to 5, characterized in that, The second roller coating assembly also includes a fifth linear motion member (13) and a sixth linear motion member (12); The fifth linear movement member (13) engages with the lower coating roller (10) and the second coating roller (11) and is configured to move the lower coating roller (10) and the second coating roller (11) along the second direction. The sixth linear movement member (12) engages with the second paint roller (11) or the lower paint roller (10) and is configured to move the second paint roller (11) or the lower paint roller (10) to adjust the gap between the second paint roller (11) and the lower paint roller (10).

9. A double-sided roller coating machine for sheet metal according to any one of claims 1 to 5, characterized in that, The second roller coating assembly further includes a seventh linear movement member (15); the seventh linear movement member (15) engages with the second tray (14), the lower coating roller (10) and the second coating roller (11), and is configured to adjust the height of the second tray (14), the lower coating roller (10) and the second coating roller (11).

10. A double-sided roller coating machine for sheet metal according to any one of claims 1 to 5, characterized in that, The double-sided roller coating machine further includes a first scraper assembly and a second scraper assembly; the first scraper assembly is configured to scrape the coating on the first coating roller (5); the second scraper assembly is configured to scrape the coating on the second coating roller (11); The scraper assembly includes a scraper blade (18) and a scraper adjustment member (17) engaged with the scraper blade (18); the scraper adjustment member (17) is configured to adjust the angle and extension distance of the scraper blade (18).

Images