A writing and projection integrated board and its production process

Abstract

The present invention discloses a writing and projection integrated board and its production process. The writing and projection integrated board includes a board body, and the board body includes an aluminum plate layer, a first surface coating and a second surface coating. The aluminum plate layer is provided with a plurality of through holes. The first surface coating is coated on the first surface of the aluminum plate layer. When the first surface coating is coated, a part of the first surface coating penetrates through the through holes, forms an overflow part in the through holes, and overflows to the second surface of the aluminum plate layer to form an overflow part. The second surface coating is coated on the second surface of the aluminum plate layer, and the second surface coating can cover the overflow part at the through holes. By providing a plurality of through holes in the aluminum plate layer in the present invention, and during the coating process of the first surface coating, the coating of the first surface coating can overflow from the through holes to form an overflow part and an overflow section, which can form additional structural strengthening anchor points between the aluminum plate layer and the coating of the first surface coating, can increase the bonding surface between the first surface coating and the aluminum plate layer, and further can ensure the bonding fastness after the first surface coating is coated.

Description

Technical Field

[0001] The present invention relates to aluminum processing equipment, and more specifically, to a production process for a writing and projection integrated board, and also to a writing and projection integrated board produced by this process. Background Art

[0002] When processing aluminum sheets, it is usually necessary to coat the surface of the aluminum with the required slurry, so as to be able to coat a coating with the required function on the surface of the aluminum, thereby improving the applicability of the aluminum sheet.

[0003] Currently, there is a type of aluminum sheet on the market suitable for writing, with a white coating on the surface of the aluminum sheet, which can be used for writing with black water-based pens. Moreover, in order to improve the texture of the sheet surface, the surface layer usually adopts a matte texture, and a diffuse reflection effect can be formed on the surface, which can be used for writing and projection at the same time. However, the coating on the surface of this type of aluminum sheet generally requires a relatively large thickness, generally 0.50 mm - 1.5 mm. Due to the relatively thick thickness, the fastness is insufficient, and it is easy to fall off after coating, resulting in easy damage to the surface of the aluminum sheet.

[0004] Therefore, a new solution needs to be proposed to solve this problem. Summary of the Invention

[0005] The purpose of the present invention is to overcome the above-mentioned deficiencies of the prior art and provide a writing and projection integrated board and its production process.

[0006] To achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A production process for a writing and projection integrated board, the writing and projection integrated board includes a board body, the board body includes an aluminum plate layer, a first surface coating and a second surface coating. The aluminum plate layer is provided with a plurality of through holes. The first surface coating is coated on the first surface of the aluminum plate layer. When the first surface coating is coated, a part of the first surface coating penetrates through the through holes, forms an overflow part in the through holes, and overflows to the second surface of the aluminum plate layer to form an overflow part; the second surface coating is coated on the second surface of the aluminum plate layer, and the second surface coating can cover the overflow part at the through hole.

[0008] The present invention is further arranged such that during the coating process of the first surface coating, the second surface of the aluminum plate layer is heated, and the overflow part and the overflow part are partially cured, and then, the first surface coating is cured and formed; then, the second surface coating is coated.

[0009] The present invention is further arranged such that the aluminum plate layer is provided with a plurality of groups of through holes, and each group of through holes is distributed along the length direction of the aluminum plate layer; and, each group of through holes is distributed in the width direction of the aluminum plate layer.

[0010] The present invention is further configured such that each group of through holes includes two columns of through holes distributed along the length direction of the aluminum plate layer.

[0011] The present invention is further configured such that during the coating process of the first surface coating, a coating device is used for coating;

[0012] The coating device includes a coating roller, a scraping roller, and a support roller mechanism. The coating roller is located below the support roller mechanism, and the scraping roller is located above the coating roller. During the coating process, the aluminum plate layer is input between the support roller mechanism and the coating roller, passes around the support roller mechanism, and then is output between the scraping roller and the support roller mechanism. The scraping roller is used to coat the first surface of the aluminum plate layer, and the scraping roller can evenly scrape the surface after coating the first surface coating. The part of the aluminum plate layer passing around the support roller mechanism forms a coating section.

[0013] The present invention is further configured such that the support roller mechanism includes a support shaft, and a plurality of annular convex portions are fixedly connected to the outer periphery of the support shaft. An annular groove portion is formed between adjacent annular convex portions. The annular groove portion corresponds to the through holes of the aluminum plate layer.

[0014] The present invention is further configured such that the support roller mechanism further includes an arc-shaped stopper. The arc-shaped stopper has a C-shaped structure, is embedded in the annular groove portion, and surrounds the outer periphery of the support shaft. An arc-shaped space is formed between the two ends of the arc-shaped stopper, the support shaft, and the coating section.

[0015] The present invention is further configured such that a hollow air inlet channel is formed in the upper half of the interior of the arc-shaped stopper. An opening one is provided at a position of the upper end of the arc-shaped stopper opposite to the arc-shaped space. An air inlet through hole penetrating to the outside of the arc-shaped stopper is provided at one end of the air inlet channel far from the opening one. A heater is provided in the air inlet channel.

[0016] The present invention is further configured such that a hollow air outlet channel is formed in the lower half of the interior of the arc-shaped stopper. An opening two is provided at a position of the lower end of the arc-shaped stopper opposite to the arc-shaped space. An air guiding outlet is provided at one end of the air outlet channel far from the opening two. The air guiding outlet is communicated with an air extraction device outside to form a negative pressure air flow.

[0017] The present invention is further configured to further include a support pipe. The support pipe is arranged along the width direction of the aluminum plate layer, and each arc-shaped stopper is fixedly installed on the outer periphery of the support pipe. A wind guiding channel is formed in the support pipe. The air outlet channel is communicated with the wind guiding channel through the air guiding outlet.

[0018] The present invention is further configured such that a circumferentially penetrating central hole is provided in the support shaft. One end of the central hole is communicated with the wind guiding channel through a wind guiding pipe. The other end of the central hole is connected to an air extraction device.

[0019] The present invention is further configured such that the arc-shaped stopper further includes an arc-shaped scraping plate, the arc-shaped scraping plate is fixedly connected to the upper side of the arc-shaped stopper, the arc-shaped scraping plate includes a scraping edge, the scraping edge is in close contact with the second surface of the aluminum plate layer, and the scraping edge and the scraping part of the scraping roller are respectively located on both sides of the aluminum plate layer for jointly limiting and supporting the aluminum plate layer.

[0020] The present invention also provides a writing and projection integrated board, which is produced by using the production process as described above, and a board body suitable for writing and projection can be produced.

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

[0022] By providing a plurality of through holes in the aluminum plate layer, and during the coating process of the coating of the first surface coating, it can overflow from the through holes to form an overflow part and an overflow section, which can form additional structural strengthening anchor points between the aluminum plate layer and the coating of the first surface coating, can increase the bonding surface between the first surface coating and the aluminum plate layer, and further can ensure the bonding fastness after the first surface coating is coated.

[0023] By adopting the strengthening anchor points formed by the overflow part and the overflow section, the bonding strength of the first surface coating can be improved. Even when the first surface coating is relatively thick, the bonding stability between the first surface coating and the aluminum plate layer can be maintained, the adhesion fastness of the first surface coating can be maintained, and the situation of easy peeling due to the relatively thick first surface coating can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a cross-sectional view of the writing and projection integrated board in this embodiment;

[0025] Figure 2 It is a schematic structural diagram of the aluminum plate layer in this embodiment;

[0026] Figure 3 It is a perspective view of the coating device in this embodiment;

[0027] Figure 4 It is a side view of the coating device in this embodiment;

[0028] Figure 5 It is a schematic structural diagram of the support roller mechanism in this embodiment;

[0029] Figure 6 It is a cross-sectional schematic view of the support roller mechanism in this embodiment Figure 1 ;

[0030] Figure 7 It is a side cross-sectional view of the coating device in this embodiment;

[0031] Figure 8 It is a cross-sectional schematic view of the support roller mechanism in this embodiment Figure 2 ;

[0032] Figure 9 Cross-sectional schematic diagram of the support roller mechanism in this embodiment Figure 3 。

[0033] Reference numerals: plate body 1; aluminum plate layer 11; through hole 111; first surface coating 12; overflow part 121; overflow portion 122; second surface coating 13; coating section 100; coating roller 2; scraping roller 3; scraping part 31; support roller mechanism 4; support shaft 41; central hole 411; annular convex part 42; annular groove part 43; arc-shaped space 431; arc-shaped stopper 44; air inlet channel 441; first opening 4411; air inlet through hole 4412; heater 4413; air outlet channel 442; second opening 4421; air guiding outlet 4422; arc-shaped scraping plate 45; scraping edge 451; support pipe 46; air guiding channel 461; air guiding pipe 47; guiding roller 5. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0035] This embodiment discloses a production process for a writing and projection integrated board, and the writing and projection integrated board is produced and processed by using this production process.

[0036] Refer to Figure 1 、 Figure 2 As shown, the writing and projection integrated board in this embodiment includes a plate body 1, and the plate body 1 includes an aluminum plate layer 11, a first surface coating 12, and a second surface coating 13. The first surface coating 12 and the second surface coating 13 are respectively coated on both sides of the aluminum plate layer 11.

[0037] On the outer side of the first surface coating 12, writing and projection can be performed. The first surface coating 12 is generally in a white state, and the surface is matte, which can achieve diffuse reflection, avoid the mirror effect, and has good visual effects. The first surface coating 12 needs to have a certain thickness, generally 0.50 mm - 1.5 mm, to form a sufficient thickness. A relatively thick first surface coating 12 is prone to detachment, especially during the winding and bending process, and the first surface coating 12 is more likely to crack and fall off.

[0038] A number of through holes 111 are provided in the aluminum plate layer 11, and the first surface coating 12 is coated on the first surface of the aluminum plate layer 11. When the first surface coating 12 is coated, a part of the first surface coating 12 passes through the through holes 111, forms an overflow part 121 in the through holes 111, and overflows to the second surface of the aluminum plate layer 11 to form an overflow portion 122.

[0039] The overflow part 122 and the first surface coating 12 are respectively on both sides of the aluminum plate layer 11, and with the help of the overflow part 121, the overflow part 121 can connect the parts on both sides of the aluminum plate layer 11, increase the bonding surface between the first surface coating 12 and the aluminum plate layer 11, and thus ensure the bonding fastness after the first surface coating 12 is coated.

[0040] The second surface coating 13 is coated on the second surface of the aluminum plate layer 11, and the second surface coating 13 can cover the overflow part 122 at the through hole 111. After coating, the second surface coating 13 can combine with the overflow part 122 and form another surface by coating the second surface of the aluminum plate layer 11.

[0041] During the coating process of the first surface coating 12, the second surface of the aluminum plate layer 11 is heated. During the process of the coated slurry overflowing, the overflow part 121 and the overflow part 122 are partially cured. Then, the first surface coating 12 is cured and formed until the first surface coating 12 can be completely formed.

[0042] Then, the second surface coating 13 is coated. During the coating process of the second surface coating 13, the second surface of the aluminum plate layer 11 is covered and the overflow part 122 is covered. Then, the surface of the second surface coating 13 is scraped flat and dried and cured.

[0043] Refer to Figure 2 As shown, the aluminum plate layer 11 is provided with several groups of through holes 111, and each group of through holes 111 is distributed along the length direction of the aluminum plate layer 11. Moreover, each group of through holes 111 is distributed in the width direction of the aluminum plate layer 11, and the through holes 111 are uniformly arranged in a striped structure, which can maintain the uniformity of the distribution of the through holes 111 and ensure that the back surface of the first surface coating 12 has a uniform additional attached strengthening structure.

[0044] Specifically, each group of through holes 111 includes two columns of through holes 111 distributed along the length direction of the aluminum plate layer 11. The aperture of the through holes 111 can be 0.1 - 0.3 cm, which can allow the coated slurry to pass through and maintain a uniform attachment effect.

[0045] Refer to Figures 3 - 9 As shown, during the coating process of the first surface coating 12, a coating device is used for coating;

[0046] The coating device includes a coating roller 2, a scraping roller 3 and a support roller mechanism 4. Among them, the coating roller 2 is located below the support roller mechanism 4, and the scraping roller 3 is located above the scraping roller 3. During the coating process, the aluminum plate layer 11 is input between the support roller mechanism 4 and the coating roller 2, winds around the support roller mechanism 4, and then outputs from between the scraping roller 3 and the support roller mechanism 4.

[0047] The slurry to be coated adhering to the lower part of the scraping roller 3 can coat the first surface of the aluminum plate layer 11 after the scraping roller 3 contacts the surface of the aluminum plate layer 11. The scraping roller 3 can scrape the surface of the coated slurry, can uniformly scrape the surface after the coating layer 12 on the coating surface, and a surface coating layer 12 with a corresponding thickness can be formed on the surface of the aluminum plate layer 11.

[0048] Correspondingly, the part of the aluminum plate layer 11 passing around the support roller mechanism 4 forms a coating section 100.

[0049] Refer to Figure 5 、 Figure 6 As shown, the support roller mechanism 4 includes a support shaft 41. Both ends of the support shaft 41 are rotatably supported on the equipment frame through bearings, and a plurality of annular convex parts 42 are fixedly connected to the outer periphery of the support shaft 41. An annular groove part 43 is formed between the adjacent annular convex parts 42. The annular groove part 43 corresponds to the through hole 111 of the aluminum plate layer 11, which can avoid the influence of the annular convex part 42 on the overflow part 121 and the overflow part 122 formed by the overflow at the through hole 111. Through the annular groove part 43, an annular relief space can be formed on the outer periphery of the support shaft 41.

[0050] In addition, the support roller mechanism 4 further includes an arc-shaped stopper 44. The arc-shaped stopper 44 has a C-shaped structure and is embedded in the annular groove part 43 and surrounds the outer periphery of the support shaft 41. Through the arc-shaped stopper 44, partial blocking can be formed in the annular groove part 43. An arc-shaped space 431 is formed between both ends of the arc-shaped stopper 44, the support shaft 41, and the coating section 100. The outer peripheral dimension of the arc-shaped stopper 44 is adapted to the outer peripheral dimension of the annular convex part 42, so that a narrow gap can be formed between the outer periphery of the arc-shaped stopper 44 and the aluminum plate layer 11, and thus the arc-shaped space 431 can form a generally distributed space.

[0051] Refer to Figure 8 、 Figure 9 As shown, upper and lower ends are respectively formed on the upper and lower sides of the arc-shaped stopper 44. A hollow air inlet channel 441 is formed in the upper half of the interior of the arc-shaped stopper 44, and the air inlet channel 441 forms an arc-shaped channel. An opening one 4411 is opened at the position where the upper end of the arc-shaped stopper 44 faces the arc-shaped space 431, and an air inlet through hole 4412 penetrating through the outer side of the arc-shaped stopper 44 is opened at one end of the air inlet channel 441 far away from the opening one 4411; a heater 4413 is arranged in the air inlet channel 441. The heater 4413 generally can adopt an electric heater, which can generate the heat required for heating and maintain the required temperature.

[0052] A hollow air outlet channel 442 is formed in the lower half of the interior of the arc-shaped stopper 44. An opening two 4421 is opened at the position where the lower end of the arc-shaped stopper 44 faces the arc-shaped space 431, and a wind guiding outlet 4422 is opened at one end of the air outlet channel 442 far away from the opening two 4421.

[0053] The air guiding outlet 4422 is communicated with the air extraction device outside, and under the action of negative pressure, a negative pressure air flow can be formed.

[0054] In addition, the coating device further includes a support pipe 46, and the support pipe 46 is arranged along the width direction of the aluminum plate layer 11. The support pipe 46 is fixedly installed on the frame, and each arc-shaped baffle 44 is fixedly installed on the outer periphery of the support pipe 46. The support pipe 46 can play a role in supporting and fixing.

[0055] An air guiding channel 461 is formed in the support pipe 46, and the air outlet channel 442 is communicated with the air guiding channel 461 through the air guiding outlet 4422.

[0056] A circumferentially penetrating central hole 411 is arranged in the support shaft 41, and one end of the central hole 411 is communicated with the air guiding channel 461 through an air guiding pipe. The other end of the central hole 411 is connected to the air extraction device.

[0057] Refer to Figure 5 、 Figure 8 、 Figure 9 As shown, under the negative pressure action of the air extraction device, negative pressure is generated in the central hole 411 of the support shaft 41 and the air guiding channel 461 of the support pipe 46, and then corresponding negative pressure can also be generated in the annular groove part 43.

[0058] After negative pressure is generated in the annular groove part 43, since the slurry of the first surface coating 12 has been coated on the outer surface of the coating section 100, the through holes 111 of the aluminum plate layer 11 can be covered by the slurry of the first surface coating 12, and part of the coating slurry can penetrate through the through holes 111 of the aluminum plate layer 1 with the action of negative pressure, enter the second surface of the aluminum plate layer 11, and then an overflow part 121 and an overflow section 122 can be formed.

[0059] Most of the air flow in the annular groove part 43 is input into the air inlet channel 441 through the air inlet through hole 4412. The heater 4413 in the air inlet channel 441 can heat to form hot air, and then flow into the arc-shaped space 431. The hot air flows through the inner surface of the aluminum plate layer 11 and then enters the air guiding channel 461 of the support pipe 46 from the air outlet channel 442 to realize the circulation of hot air.

[0060] In addition, when the hot air flows through the air guiding channel 461 of the support pipe 46, it can also flow through the central hole 411 of the support shaft 41. When the hot air flows through the support shaft 41, the heat can also be transferred to the scraping roller 3 and the annular convex part 42, and then the heat can be evenly transferred to the surfaces of the support shaft 41 and the annular convex part 42. A certain degree of heating can also be realized through the support shaft 41 and the annular convex part 42 to more effectively heat and maintain the temperature of the coating section 100 of the aluminum plate layer 11.

[0061] In addition, the arc-shaped stopper 44 further includes an arc-shaped scraping plate 45. The arc-shaped scraping plate 45 is fixedly connected to the upper side of the arc-shaped stopper 44, and the arc-shaped scraping plate 45 has an arc-shaped structure. The arc-shaped scraping plate 45 includes a scraping edge 451, and the scraping edge 451 is in close contact with the second surface of the aluminum plate layer 11.

[0062] The scraping edge 451 of the arc-shaped scraping plate 45 and the scraping part 31 of the scraping roller 3 are respectively located on both sides of the aluminum plate layer 11 and are used to jointly limit and support the aluminum plate layer 11. The scraping edge 451 of the arc-shaped scraping plate 45 can also perform surface scraping treatment on the second surface of the aluminum plate layer 11, evenly scrape the excess part of the overflow part 122, and thus can maintain the surface flatness of the overflow part 122 and avoid generating a too-high protruding state.

[0063] In addition, the height of the scraping roller 3 can also be adjusted. By adjusting the positions of the scraping roller 3 and the scraping part 31, the adjustment can be made according to the coating thickness required for the first surface coating 12.

[0064] This embodiment also discloses a writing and projection integrated board. The board body 1 is produced by using the production process in the above embodiment, and a writing and projection integrated board can be obtained.

[0065] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as within the protection scope of the present invention.

Claims

1. A production process of an integrated writing and projection board, characterized in that, The writing and projection integrated board includes a board body (1), and the board body (1) includes an aluminum plate layer (11), a first surface coating (12), and a second surface coating (13). The aluminum plate layer (11) is provided with a plurality of through holes (111). The first surface coating (12) is coated on the first surface of the aluminum plate layer (11). When the first surface coating (12) is coated, a part of the first surface coating (12) penetrates through the through holes (111) to form an overflow part (121) in the through holes (111), and overflows to the second surface of the aluminum plate layer (11) to form an overflow part (122). The second surface coating (13) is coated on the second surface of the aluminum plate layer (11), and the second surface coating (13) can cover the overflow part (122) at the through holes (111). During the coating process of the first surface coating (12), the second surface of the aluminum plate layer (11) is heated, and the overflow part (121) and the overflow part (122) are partially cured. Then, the first surface coating (12) is cured and formed. Then, the second surface coating (13) is coated. The aluminum plate layer (11) is provided with a plurality of groups of through holes (111), and each group of through holes (111) is distributed along the length direction of the aluminum plate layer (11). Moreover, each group of through holes (111) is distributed in the width direction of the aluminum plate layer (11). During the coating process of the first surface coating (12), a coating device is used for coating. The coating device includes a coating roller (2), a scraping roller (3), and a support roller mechanism (4). The coating roller (2) is located below the support roller mechanism (4), and the scraping roller (3) is located above the scraping roller (3). During the coating process, the aluminum plate layer (11) is input between the support roller mechanism (4) and the coating roller (2), winds around the support roller mechanism (4), and then is output between the scraping roller (3) and the support roller mechanism (4). The scraping roller (3) is used for coating the first surface of the aluminum plate layer (11), and the scraping roller (3) can uniformly scrape the surface after coating the first surface coating (12). The part of the aluminum plate layer (11) that winds around the support roller mechanism (4) forms a coating section (100). The support roller mechanism (4) includes a support shaft (41), and a plurality of annular convex parts (42) are fixedly connected to the outer periphery of the support shaft (41). An annular groove part (43) is formed between adjacent annular convex parts (42). The annular groove part (43) corresponds to the through holes (111) of the aluminum plate layer (11).

2. The production process of the integrated writing and projection board according to claim 1, characterized in that, Each group of through holes (111) includes two columns of through holes (111) distributed along the length direction of the aluminum plate layer (11).

3. The production process of the integrated writing and projection board according to claim 1, characterized in that, The support roller mechanism (4) further includes an arc-shaped stopper (44). The arc-shaped stopper (44) has a C-shaped structure, is embedded in the annular groove part (43), and surrounds the outer periphery of the support shaft (41). An arc-shaped space (431) is formed between the two ends of the arc-shaped stopper (44), the support shaft (41), and the coating section (100). A hollow air inlet channel (441) is formed in the upper half of the interior of the arc-shaped baffle (44). An opening one (4411) is provided at a position where the upper end of the arc-shaped baffle (44) faces the arc-shaped space (431). The end of the air inlet channel (441) far from the opening one (4411) is provided with an air inlet through hole (4412) that penetrates through to the outside of the arc-shaped baffle (44); a heater (4413) is arranged in the air inlet channel (441); A hollow air outlet channel (442) is formed in the lower half of the interior of the arc-shaped baffle (44). An opening two (4421) is provided at a position where the lower end of the arc-shaped baffle (44) faces the arc-shaped space (431). The end of the air outlet channel (442) far from the opening two (4421) is provided with an air guiding outlet (4422), and the outside of the air guiding outlet (4422) is communicated with an air extraction device to form a negative pressure air flow.

4. The production process of the integrated writing and projection board according to claim 3, characterized in that, It further includes a support pipe (46). The support pipe (46) is arranged along the width direction of the aluminum plate layer (11), and each arc-shaped baffle (44) is fixedly installed on the outer periphery of the support pipe (46); a wind guiding channel (461) is formed in the support pipe (46); the air outlet channel (442) is communicated with the wind guiding channel (461) through the air guiding outlet (4422); A circumferentially penetrating central hole (411) is arranged in the support shaft (41). One end of the central hole (411) is communicated with the wind guiding channel (461) through a wind guiding pipe, and the other end of the central hole (411) is connected to an air extraction device.

5. The production process of the integrated writing and projection board according to claim 4, characterized in that, The arc-shaped baffle (44) further includes an arc-shaped scraping plate (45). The arc-shaped scraping plate (45) is fixedly connected to the upper side of the arc-shaped baffle (44). The arc-shaped scraping plate (45) includes a scraping material retaining edge (451). The scraping material retaining edge (451) is in close contact with the second surface of the aluminum plate layer (11). The scraping material retaining edge (451) and the scraping part (31) of the scraping roller (3) are respectively located on both sides of the aluminum plate layer (11) and are used for jointly limiting and supporting the aluminum plate layer (11).

6. A writing and projection integrated board, characterized in that, The production is carried out by using the production process described in any one of claims 1-5.

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