A color-resistant metal color-coated plate and a roll coating processing system thereof

Abstract

This invention discloses a colorfast metallic color-coated sheet and its roller coating system, comprising a support roller, a coating roller, and two sizing rollers. The support roller is used for aluminum material to pass over, and the coating roller is located below the support roller, used to coat the surface of the aluminum material passing over the support roller. The two sizing rollers are also located below the coating roller, respectively, and are used to coat the surface of the coating roller with sizing material. The outer circumference of the sizing roller is provided with several evenly distributed annular protrusions, with annular grooves formed between adjacent protrusions. The lower part of each annular protrusion is immersed in the sizing material to be coated, and the annular grooves are located above the surface of the sizing material. The annular protrusions are used to coat the outer circumference of the coating roller to form strip-shaped coating sections, and a strip-shaped interval is formed between two strip-shaped coating sections opposite to the annular grooves. This invention can effectively coat and protect the surface of aluminum material, forming an aluminum sheet material with colorfastness.

Description

Technical Field

[0001] This invention relates to aluminum processing equipment, and more specifically, to a roll coating system suitable for aluminum surface processing, and also to a colorfast metallic color-coated sheet. Background Technology

[0002] Aluminum sheets are typically made from aluminum coils. By coating the surface of the aluminum coil, special functional surface conditions can be created. For example, a primer layer can be applied to protect the surface of the aluminum layer before applying colors or patterns. For instance, some aluminum layers require a striped texture to be coated on the surface, with the stripes distributed along the length of the aluminum coil. During coating, a roller with annular protrusions on its surface is used to apply the coating to the aluminum surface.

[0003] However, in the reprocessing of aluminum coils, the width of the stripes needs to be adjusted, requiring the replacement of different coating rollers. If multiple stripe widths are required, different coating rollers must be used, significantly increasing coating costs. In some production processes, coating rollers of the required width may not be available under current production conditions. In such cases, masking stickers need to be applied to the corresponding positions on the aluminum surface during production. During roller coating, most of the coating is applied to the aluminum surface to form stripes, with the edges remaining on the masking stickers. After coating is complete, the masking stickers are peeled off to remove the coating from the edges of the stripes, thus allowing the desired width of stripes to be coated on the aluminum coil surface. While this achieves coating production, it adds the steps of applying and peeling off masking stickers, making production cumbersome and unsuitable for large-scale production.

[0004] Therefore, a new solution is needed to address this problem. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and provide a colorfast metallic color-coated sheet and its roller coating system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A roll coating system includes a support roller, a roll coating roller, and two sizing rollers. The support roller is used for aluminum material to be rolled around, and the roll coating roller is located below the support roller and is used to roll coat the aluminum material that has been rolled around the support roller.

[0008] Both sizing rollers are located below the roller coating roller and abut against the surface of the roller coating roller, used to apply slurry to the surface of the roller coating roller; the outer periphery of the sizing roller is provided with several evenly distributed annular protrusions, and annular grooves are formed between adjacent annular protrusions. The lower part of the annular protrusions is immersed in the slurry to be coated, and the annular grooves are located above the liquid surface of the slurry to be coated. The annular protrusions are used to coat the outer periphery of the roller coating roller to form a strip-shaped roller coating section, and a strip-shaped interval section opposite to the annular groove is formed between two strip-shaped roller coating sections.

[0009] The present invention is further configured such that the two sizing rollers have the same shape and the annular protrusions on the outer periphery of the two sizing rollers are opposite each other, and the two sizing rollers work together to sizing the surface of the roller coating roller.

[0010] The invention is further configured such that the two sizing rollers can be axially adjusted separately. After axial adjustment, the annular protrusions of the two sizing rollers are misaligned, and the two annular protrusions form two strip-shaped roller coating sections outside the roller coating roller. The two strip-shaped roller coating sections overlap each other, which can increase the total width of the two strip-shaped roller coating sections. By adjusting the relative axial position of the two sizing rollers, the width of the overlapping part of the two strip-shaped roller coating sections can be adjusted, and the total width of the two strip-shaped roller coating sections can be adjusted.

[0011] The invention is further configured such that, during the axial adjustment of the two coating rollers, the first coating roller can be reciprocated to the left from the initial position, and the second coating roller can be reciprocated to the right from the initial position; and the adjustment directions of the two coating rollers are opposite, the distance is equal, and the middle position of the total width of the two strip-shaped roller coating sections remains fixed.

[0012] The present invention is further configured such that both ends of the sizing roller are rotatably supported by bearing seats, and the bearing seats are slidably connected to the frame, and the position of the bearing seats can be locked.

[0013] The present invention is further configured to include a leveling roller, which is located below the support roller and abuts against the outside of the support roller, pressing the aluminum material between the support roller and the leveling roller; the leveling roller is located on the side near the roller coating roller and is in contact with the roller coating roller; the position where the roller coating roller contacts the leveling roller is located after the position where the roller coating roller contacts the aluminum material.

[0014] The present invention is further configured such that the aluminum material bypasses the support roller and moves with the support roller, the rotation direction of the coating roller is opposite to that of the support roller, and the rotation direction of the leveling roller is consistent with that of the coating roller; the contact position of the leveling roller and the coating roller is differential contact.

[0015] The present invention is further configured such that the roller coating roller includes a central rotating shaft, an outer sleeve, a plurality of rotating connecting seats and rotating connecting seats, the two ends of the central rotating shaft are mounted on the frame, and the outer sleeve is fitted around the outer periphery of the central rotating shaft and can rotate coaxially around the central rotating shaft;

[0016] The invention is further configured such that the outer layer is an outer rubber layer; the outer layer of the outer layer has a plurality of material storage holes, one end of the material storage hole is open and the other end is closed; the material storage holes are opened along the middle of two overlapping strip-shaped roller coating sections to form a ring-shaped distribution structure.

[0017] The invention is further configured such that the rotating connecting seat is rotatably connected to the outer periphery of the central rotating shaft, and a support frame is fixedly connected to the outer periphery of the central rotating shaft. The outer side of the support frame is fixedly connected to the inner periphery of the outer jacket layer. Along the axial direction of the central rotating shaft, a plurality of support frames are distributed, and an interval space is formed between adjacent support frames. An abutment roller group is installed in the interval space. The abutment roller group is supported by the central rotating shaft and can abut against the inner side of the outer jacket layer corresponding to the material leveling roller. The material leveling roller and the abutment roller group abut against the inner and outer sides of the outer jacket layer and are opposite to the position of the material storage hole.

[0018] The present invention is further configured such that the pressure roller assembly includes a mounting frame and a pressure roller, the mounting frame is fixedly connected to the outer periphery of the central rotating shaft, the mounting frame is fixedly connected to two mounting lugs, and the pressure roller is rotatably connected between the two mounting lugs via a support shaft; the pressure roller rolls against the inner side of the outer jacket layer.

[0019] The present invention is further configured such that a plurality of annular protrusions are fixedly formed on the outer periphery of the material leveling roller, and each annular protrusion corresponds one-to-one with the position of the strip-shaped roller coating part, and the annular protrusions of the material leveling roller and the position of the pressure roller correspond to each other.

[0020] The present invention also provides a colorfast metallic color-coated sheet, comprising an aluminum material, a primer layer coated on the surface of the aluminum material, a topcoat layer coated on the surface of the primer layer, and a clear coat layer coated on the surface of the topcoat layer; the topcoat layer is coated by a roller coating system as described above to form a plurality of strip-shaped textures.

[0021] In summary, the present invention has the following beneficial effects:

[0022] By using two sizing rollers to apply sizing to the outer surface of the roller coating roller, and then coating the aluminum surface with the sizing roller, a stable texture can be formed on the aluminum surface, resulting in a stable coating structure. By axially adjusting the two sizing rollers, which have evenly distributed convex rings on their outer circumferences, the convex rings of the two sizing rollers can partially overlap, thereby adjusting the width of the strip-shaped sizing formed on the surface of the roller coating roller. By adjusting the width of the overlapping part, the width of the sizing on the roller coating roller can be adjusted.

[0023] By setting up a uniform material pressure roller, the aluminum material and the surface outside the roller coating roller on the lower side of the support roller are pressed by the uniform material pressure roller. After being pressed, the thicker middle part of the coating stripes on the aluminum material surface will be transferred to both sides, thereby making the coating stripes on the aluminum material surface more uniform.

[0024] By opening a material storage hole on the outer layer of the roller coating roll, a portion of the coating slurry can be accommodated through the material storage hole on the surface of the outer layer. Furthermore, since the position of the material storage hole corresponds to the middle position of the two overlapping strip roller coating sections, excess slurry at the overlapping position of the two coatings is temporarily stored in the material storage hole. Moreover, through the rolling support action of the pressure roller, pressure support can be provided on the back side of the inner layer of the outer layer and the material storage hole, thereby achieving pressure extrusion of the material storage hole to achieve effective paint replenishment and coating. Attached Figure Description

[0025] Figure 1 This is a perspective view of a roller coating system in this embodiment;

[0026] Figure 2 This is a side view of a roller coating system in this embodiment. Figure 1 ;

[0027] Figure 3 This is a schematic diagram of the external appearance of the coating roller in this embodiment;

[0028] Figure 4 This is a schematic diagram of the sizing roller assembly in this embodiment. Figure 1 ;

[0029] Figure 5 This is a schematic diagram of the sizing roller assembly in this embodiment. Figure 2 ;

[0030] Figure 6 This is a side view of a roller coating system in this embodiment. Figure 2 ;

[0031] Figure 7 This is a schematic diagram of the structure of the roller coating roller in this embodiment;

[0032] Figure 8 This is a cross-sectional view of the coating roller 2 in this embodiment;

[0033] Figure 9 for Figure 8 Enlarged view of a portion of the image.

[0034] Reference numerals: Aluminum material 100; Support roller 1; Roller coating roller 2; Strip-shaped roller coating section 21; Strip-shaped spacer section 22; Central rotating shaft 201; Outer jacket layer 202; Material storage hole 2021; Rotating connecting seat 203; Support frame 204; Spacer space 205; Pressure roller group 206; Mounting frame 2061; Mounting lug 2062; Pressure roller 2063; Support shaft 2064; Sizing roller group 3; Sizing roller 31; Annular protrusion 311; Annular groove 312; Bearing seat 32; Evenly leveling roller 4. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] This embodiment discloses a roller coating system, referring to... Figures 1-5 As shown, it includes a support roller 1, a coating roller 2, and two sizing rollers 31. The support roller 1 is used for aluminum material 100 to pass over, and the aluminum material 100 moves with the support roller 1. The two sizing rollers 31 together form a sizing roller group 3.

[0037] The roller coating roller 2 is located below the support roller 1. The surface of the roller coating roller 2 can be pressed against the surface of the aluminum material that the support roller 1 passes over to perform roller coating. When they are pressed against each other, the slurry on the outer periphery of the roller coating roller 2 can be transferred to the surface of the aluminum material 100. The two slurry rollers 31 are both located below the roller coating roller 2. The two slurry rollers 31 are pressed against the surface of the roller coating roller 2 respectively, and the slurry can be applied to the surface of the roller coating roller 2.

[0038] Reference Figure 1 , Figure 4 As shown, the outer periphery of the coating roller 31 is provided with a plurality of evenly distributed annular protrusions 311, and annular grooves 312 are formed between adjacent annular protrusions 311. The lower part of the annular protrusions 311 is immersed in the slurry to be coated, and the annular grooves 312 are located above the surface of the slurry to be coated. The lower part of the coating roller 31 can contact the slurry, and the slurry adheres to the surface of the annular protrusions 311 of the coating roller 31, forming an annular strip structure, while the position of the annular grooves 312 can form gaps where no slurry adheres.

[0039] When the annular protrusions 311 of the two coating rollers 31 pass upward, they can contact the lower side of the coating roller 2, transferring the coating paste to the surface of the coating roller 2 and forming a strip-shaped coating portion 21 on the outside of the coating roller 2. A strip-shaped spacing portion 22 is formed between adjacent strip-shaped coating portions 21. Then, the coating roller 2 directly contacts the surface of the aluminum material 100, transferring the strip-shaped coating portion 21 outside the coating roller 2 to the surface of the aluminum material 100, forming spaced strip-shaped stripes on the surface of the aluminum material 100.

[0040] Since there are two sizing rollers 31, the annular protrusions 311 of the two sizing rollers 31 are used to jointly coat the outer periphery of the roller coating roller 2 to form a strip-shaped roller coating portion 21, and a strip-shaped interval portion 22 opposite to the annular groove portion 312 is formed between the two strip-shaped roller coating portions 21. The strip-shaped pattern on the surface of the sizing roller 31 is formed by the joint coating of the two strip-shaped roller coating portions 21.

[0041] Reference Figure 3 , Figure 4 , Figure 5 As shown, the two sizing rollers 31 have the same shape, and the annular protrusions 311 on the outer periphery of the two sizing rollers 31 are opposite to each other. The two sizing rollers 31 together apply sizing to the surface of the roller coating roller 2.

[0042] The two sizing rollers 31 can be adjusted axially. After axial adjustment, the annular protrusions 311 of the two sizing rollers 31 are misaligned. The two annular protrusions 311 form two strip-shaped roller coating sections 21 outside the roller coating roller 2. The two strip-shaped roller coating sections 21 overlap each other, which can increase the total width of the two strip-shaped roller coating sections 21. By adjusting the relative axial position of the two sizing rollers 31, the width of the overlapping part of the two strip-shaped roller coating sections 21 can be adjusted, and the total width of the two strip-shaped roller coating sections 21 can be adjusted.

[0043] Both ends of the coating roller 31 are rotatably supported by bearing seats 32, and the bearing seats 32 are slidably connected to the frame, and the position of the bearing seats 32 can be locked. By axially adjusting the bearing seats 32 and the coating roller 31, the axial position of the coating roller 31 can be adjusted, thereby adjusting the total width of the two strip-shaped roller coating sections 21 formed by the corresponding coating.

[0044] Reference Figure 4 As shown, during the axial adjustment process, the first sizing roller 31 can be adjusted back and forth to the left from the initial position, and the second sizing roller 31 can be adjusted back and forth to the right from the initial position; and the adjustment directions of the two sizing rollers 31 are opposite, the distance is equal, and the middle position of the total width of the two strip-shaped roller coating sections 21 remains fixed.

[0045] When both sizing rollers 31 are in their initial positions, the annular protrusions 311 of the two sizing rollers 31 are completely opposite to each other, causing the strip-shaped roller coating portions 21 formed by the annular protrusions 311 on the roller coating roller 2 to completely overlap. The total width of the two strip-shaped roller coating portions 21 on the roller coating roller 2 is the same as the width of one strip-shaped roller coating portion 21, resulting in the narrowest coating strips. When the first sizing roller 31 is adjusted to the left and the second sizing roller 31 is adjusted to the right, the coating positions of the two strip-shaped roller coating portions 21 on the surface of the roller coating roller 2 are offset from each other, and the middle positions of the two strip-shaped roller coating portions 21 partially overlap, widening the total width. By adjusting and controlling the axial adjustment positions of the two sizing rollers 31, the stripe width on the surface of the aluminum material 100 can be controlled.

[0046] Furthermore, referring to Figures 6-9 As shown, the roller coating system in this embodiment also includes a leveling roller 4, which is located below the support roller 1 and abuts against the outside of the support roller 1, pressing the aluminum material 100 between the support roller 1 and the leveling roller 4.

[0047] Reference Figure 6 , Figure 7 As shown, the leveling roller 4 is located near the side of the roller coating roller 2 and can contact the roller coating roller 2. The contact position between the roller coating roller 2 and the leveling roller 4 is located after the contact position between the roller coating roller 2 and the aluminum material 100. After the roller coating roller 2 coats the aluminum material 100, the residual slurry on the surface of the aluminum material 100 adheres to the leveling roller 4. The leveling roller 4 can wipe the slurry on the surface of the roller coating roller 2 onto the surface of the leveling roller 4, and then the leveling roller 4 will contact the surface of the aluminum material 100 again to replenish the slurry on the surface of the aluminum material 100.

[0048] Aluminum material 100 moves around the support roller 1 and follows the support roller 1. The rotation direction of the roller coating roller 2 is opposite to that of the support roller 1, and the rotation direction of the leveling roller 4 is consistent with that of the roller coating roller 2. The contact position between the leveling roller 4 and the roller coating roller 2 is differential contact.

[0049] The surface of the aluminum material 100 is rolled by the surface of the leveling roller 4. The strip coating section 21 outside the roller coating roller 2 has two partially overlapping layers, resulting in two overlapping coatings in the middle of the coating stripes, while the middle areas near the sides only have one coating. This causes the coating stripes to be thicker in the middle and thinner on the sides. After coating the surface of the aluminum material 100, this may also result in a situation where the coating stripes are thicker in the middle and relatively thinner on the sides. Rolling the surface of the aluminum material 100 by the leveling roller 4 causes the thicker middle areas of the coating stripes on the surface of the aluminum material 100 to transfer to the sides, thus making the coating stripes on the surface of the aluminum material 100 more uniform.

[0050] Reference Figure 8 , Figure 9As shown, the roller coating roller 2 includes a central rotating shaft 20, an outer jacket layer 202, and several rotating connecting seats 203. The two ends of the central rotating shaft 20 are mounted on the frame, and the central rotating shaft 20 can remain in a fixed state, serving as a rotational support.

[0051] The outer layer 202 is fitted around the outer periphery of the central rotating shaft 20 and can rotate coaxially around the central rotating shaft 20. Between the outer layer 202 and the central rotating shaft 20, a multi-point support structure is formed between the central rotating shaft 20 and the outer layer 202 through a number of rotating connecting seats 203.

[0052] The outer layer 202 is an outer rubber layer with a metal skeleton structure embedded within it. This structure maintains the structural stability of the outer layer 202 while also giving its surface a certain degree of elasticity. During the roll coating process, it can effectively coat the surface of the aluminum material 100. Under pressure, the outer part of the outer layer 202 can undergo a small elastic deformation.

[0053] A plurality of material storage holes 2021 are provided on the outer layer of the outer jacket 202. One end of each material storage hole 2021 is open and the other end is closed. The position of the material storage holes 2021 corresponds to the middle position of the two overlapping strip-shaped roller coating sections 21. Along the axial direction of the central rotating shaft 20, several groups of material storage holes 2021 are formed, and each group of material storage holes 2021 is arranged in a ring. The structure of each group of material storage holes 2021 corresponds to that of each strip-shaped roller coating section 21.

[0054] The material storage hole 2021 on the surface of the outer layer 202 can accommodate a portion of the coating slurry. Furthermore, since the position of the material storage hole 2021 corresponds to the middle position of the two overlapping strip roller coating sections 21, excess slurry is temporarily stored in the material storage hole 2021 at the overlapping position of the two coating sections.

[0055] Specifically, the rotating connecting seat 203 is rotatably connected to the outer periphery of the central rotating shaft 201, and a support frame 204 is fixedly connected to the outer periphery of the central rotating shaft 201. The outer side of the support frame 204 is connected and fixed to the inner periphery of the outer jacket layer 202. Along the axial direction of the central rotating shaft 201, a number of support frames 204 are distributed. The support frames 204 have a disc-shaped structure, and a space 205 is formed between adjacent support frames 204.

[0056] A pressure roller assembly 206 is installed in the space 205 between the two support frames 204. The pressure roller assembly 206 is supported by a central rotating shaft 201 and can abut against the inner side of the outer jacket layer 202 corresponding to the material leveling roller. The material leveling roller 4 and the pressure roller assembly 206 press against the inner and outer sides of the outer jacket layer 202 and are opposite to the position of the material storage hole 2021, applying mutual pressure to the inner and outer sides of the outer jacket layer 202.

[0057] Reference Figure 9 As shown, the pressure roller assembly 206 includes a mounting frame 2061 and a pressure roller 2063. The mounting frame 2061 is fixedly connected to the outer periphery of the central rotating shaft 201. Two mounting ears 2062 are fixedly connected to the mounting frame 2061, and the pressure roller 2063 is rotatably connected between the two mounting ears 2062 via a support shaft 2064. The pressure roller 2063 rolls and presses against the inner side of the outer jacket layer 202. The pressure roller 2063 can exert a pressing effect on the inner side of the material storage hole 2021 of the outer jacket layer 202, thereby applying pressure away from the material storage hole 2021. On the one hand, it can keep the coating near the material storage hole 2021 in a firm and stable state; on the other hand, it can maintain pressure on the back side of the material storage hole 2021, providing support and facilitating the extrusion of the slurry in the material storage hole 2021.

[0058] When pressure is applied to the outer side of the material storage hole 2021 of the outer layer 202, the surface of the outer layer 202 will undergo a small elastic deformation, and pressure will be applied at the position of the material storage hole 2021. The slurry accumulated in the material storage hole 2021 can be transferred to the surface of the leveling roller 4, so that the outer side of the leveling roller 4 and the position of the coating stripe on the surface of the aluminum material 100 will form a stripe structure of a certain width, which can play a coating compensation role for the position of the coating stripe on the surface of the aluminum material 100.

[0059] Furthermore, when the outer layer of the uniform pressure roller 4 is coated with slurry, it can roll-press the surface of the aluminum material 100. On the one hand, it can homogenize the slurry on the surface of the aluminum material 100, and on the other hand, it can also coat a portion of the slurry onto the surface of the aluminum material 100, achieving uniform pressure coating of the striped stripe positions. Moreover, through the rolling support action of the pressure roller 2063, it can provide pressure support on the back side of the inner layer of the outer jacket 202 and the material storage hole 2021, thereby achieving pressure extrusion of the material storage hole 2021, so as to achieve effective coating replenishment and coating.

[0060] Furthermore, several annular protrusions (not shown in the figure) are fixedly formed on the outer periphery of the material leveling roller 4. The positions of the annular protrusions correspond one-to-one with the positions of the strip coating section 21. The annular protrusions of the material leveling roller 4 and the positions of the pressure roller 2063 correspond to each other.

[0061] Each annular protrusion forms a smooth arc transition on its outer surface and is distributed in a ring shape on the outer periphery of the leveling roller 4. Moreover, the shape of the annular protrusions on the outer periphery of the leveling roller 4 can be consistent with the shape of the annular protrusions 311 on the outer periphery of the slurry roller 31. The annular protrusions can focus on coating the slurry coating area on the surface of the aluminum material 100, and can focus on coating the middle overlapping position on the surface of the aluminum material 100. This can also roll the thicker layer area and homogenize the slurry in the thicker middle coating position, avoiding excessive thickness difference between the middle and side stripes of the strip.

[0062] If excess slurry adheres to the surface of the aluminum material 100 after coating, it is generally located in the middle of the two strip-shaped roller coating sections 21. After the leveling roller 4 comes into contact with the surface of the aluminum material 100, the excess slurry on the surface of the aluminum material 100 can be partially transferred to the surface of the leveling roller 4. At this time, the leveling roller 4 can play the role of leveling and removing excess slurry. Through the roller pressure adjustment of the leveling roller 4, a uniform coating effect can be formed on the surface of the aluminum material 100.

[0063] This embodiment also discloses a colorfast metallic color-coated sheet, including an aluminum material 100, a primer layer coated on the surface of the aluminum material 100, a topcoat layer coated on the surface of the primer layer, and a clear coat layer coated on the surface of the topcoat layer. The primer serves to protect the surface of the aluminum material 100, forming a dense protective film on the surface, and also improves the bonding strength of the outer topcoat layer and other coatings.

[0064] The coating layer can protect the outermost part of the aluminum material 100. The main material of the coating layer 100 is a transparent polyurethane coating with tiny polyamide particles added to it, which has good scratch resistance and good UV resistance, and can further improve the stability of the aluminum surface color.

[0065] The topcoat layer is applied using the roller coating system described in the above embodiment to form several striped textures. In this embodiment, there is a color difference between the striped textures of the primer layer and the topcoat layer. By contrasting the color differences, a striped effect can be formed on the surface of the aluminum material 100.

[0066] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A roller coating system, characterized in that, It includes a support roller (1), a roller coating roller (2) and two sizing rollers (31). The support roller (1) is used for aluminum material to pass around, and the roller coating roller (2) is located below the support roller (1) and is used to roll coat the aluminum material that passes around the support roller (1). Both sizing rollers (31) are located on the lower side of the roller coating roller (2) and abut against the surface of the roller coating roller (2) respectively, for applying sizing material to the surface of the roller coating roller (2); The outer periphery of the coating roller (31) is provided with a plurality of evenly distributed annular protrusions (311), and an annular groove (312) is formed between adjacent annular protrusions (311). The lower part of the annular protrusions (311) is immersed in the slurry to be coated, and the annular groove (312) is located above the liquid surface of the slurry to be coated. The annular protrusions (311) are used to coat the outer periphery of the roller coating roller (2) to form a strip-shaped roller coating section (21). A strip-shaped interval section (22) opposite to the annular groove (312) is formed between two strip-shaped roller coating sections (21). The two sizing rollers (31) have the same shape, and the annular protrusions (311) on the outer periphery of the two sizing rollers (31) are opposite to each other. The two sizing rollers (31) together apply sizing to the surface of the roller coating roller (2). The two sizing rollers (31) can be adjusted axially. After axial adjustment, the annular protrusions (311) of the two sizing rollers (31) are misaligned. The two annular protrusions (311) form two strip-shaped roller coating sections (21) outside the roller coating roller (2). The two strip-shaped roller coating sections (21) overlap each other, which can increase the total width of the two strip-shaped roller coating sections (21). By adjusting the relative axial position of the two sizing rollers (31), the width of the overlapping part of the two strip-shaped roller coating sections (21) can be adjusted, and the total width of the two strip-shaped roller coating sections (21) can be adjusted.

2. The roller coating system according to claim 1, characterized in that, During the axial adjustment process, the first sizing roller (31) can be adjusted back and forth to the left from the initial position, and the second sizing roller (31) can be adjusted back and forth to the right from the initial position; and the adjustment directions of the two sizing rollers (31) are opposite, the distance is equal, and the middle position of the total width of the two strip-shaped roller coating sections (21) remains fixed.

3. The roller coating system according to claim 1, characterized in that, It also includes a leveling roller (4), which is located below the support roller (1) and abuts against the outside of the support roller (1), pressing the aluminum material (100) between the support roller (1) and the leveling roller (4); the leveling roller (4) is located on the side close to the roller coating roller (2) and is in contact with the roller coating roller (2); the position where the roller coating roller (2) contacts the leveling roller (4) is located after the position where the roller coating roller (2) contacts the aluminum material (100).

4. The roller coating system according to claim 3, characterized in that, The aluminum material (100) moves around the support roller (1) and follows the support roller (1). The rotation direction of the roller coating roller (2) is opposite to that of the support roller (1), and the rotation direction of the leveling roller (4) is consistent with that of the roller coating roller (2). The contact position of the leveling roller (4) and the roller coating roller (2) is in differential contact.

5. The roller coating system according to claim 3, characterized in that, The roller coating roller (2) includes a central rotating shaft (201), an outer sleeve (202), a plurality of rotating connecting seats (203), and rotating connecting seats (203). The two ends of the central rotating shaft (201) are mounted on the frame, and the outer sleeve (202) is fitted around the outer periphery of the central rotating shaft (201) and can rotate coaxially around the central rotating shaft (201). The outer layer (202) is an outer rubber layer; the outer layer (202) has a plurality of material storage holes (2021) on its outer surface, with one end of the material storage hole (2021) open and the other end closed; the material storage holes (2021) are opened along the middle of two overlapping strip-shaped roller coating sections (21) to form a ring-shaped distribution structure.

6. The roller coating system according to claim 5, characterized in that, The rotating connecting seat (203) is rotatably connected to the outer periphery of the central rotating shaft (201). A support frame (204) is fixedly connected to the outer periphery of the central rotating shaft (201). The outer side of the support frame (204) is fixedly connected to the inner periphery of the outer jacket layer (202). Along the axial direction of the central rotating shaft (201), several support frames (204) are distributed. An interval space (205) is formed between adjacent support frames (204). A pressure roller group (206) is installed in the interval space (205). The pressure roller group (206) is supported by the central rotating shaft (201) and can abut against the inner side of the outer jacket layer (202) corresponding to the material leveling roller. The material leveling roller (4) and the pressure roller group (206) abut against the inner and outer sides of the outer jacket layer (202) and are opposite to the position of the material storage hole (2021).

7. The roller coating system according to claim 6, characterized in that, The pressure roller assembly (206) includes a mounting frame (2061) and a pressure roller (2063). The mounting frame (2061) is fixedly connected to the outer periphery of the central rotating shaft (201). The mounting frame (2061) is fixedly connected to two mounting lugs (2062). The two mounting lugs (2062) are rotatably connected to the pressure roller (2063) through a support shaft (2064). The pressure roller (2063) rolls and presses against the inner side of the outer jacket layer (202).

Images