TW201442789A - Coating device and coating method - Google Patents

Abstract

Disclosed are a coating device and a coating method. The coating device is provided to coat ink on two installation surfaces of a substrate so as to form two ink layers. The coating device comprises a base for receiving and containing ink; a conveyance mechanism for driving and dipping the substrate into the ink so as to enable the installation surfaces to be soaked in and coated with the ink; a shaping mechanism for scraping the ink coated on the installation surfaces so as to form the ink layers; and a leveling mechanism for being abutted against the ink layers to level the surfaces of the ink layers. With the aforementioned novel structure design, the present invention is able to form the ink layers on the two installation surfaces of the substrate at the same time, so as to not only simplify the production line and reduce the installation cost, but also shorten the manufacturing time and increase the manufacturing efficiency, thereby improving the product yield rate and reducing the manufacturing cost.

Description

Coating equipment and coating method

The present invention relates to a coating apparatus and a coating method, and more particularly to a coating apparatus and a coating method for coating an ink material on a substrate in the process of manufacturing a flexible printed circuit board.

Generally, the Flexible Printed Circuit Board (FPCB) is mainly used for loading electronic components such as resistors, integrated circuit chips, capacitors, etc., and is widely used in electronic products. Generally, a flexible printed circuit board is usually manufactured through a plurality of processes such as a photoresist, exposure, development, etching, coating of an ink, and baking. Wherein, in the manufacturing process of the coating ink, the ink layer is usually coated on a substrate by a coating device to form an ink layer, and the ink layer can provide insulation protection and protect the copper wire. It also prevents the aforementioned electronic parts from being soldered to the wrong place.

Referring to Figure 1, the coating apparatus 91 generally includes a base 911 containing an ink material 99, a paint roller 912 mounted in the base 911, and a coating roller 912 positioned to drive a substrate 97. a conveyor roller 913 moving along a line direction 900, and a forming roller located downstream of the base 911 along the line direction 900 914. When the substrate 97 moves in the line direction 900, the substrate 911 passes through the forming roller 914.

The substrate 97 has two opposite setting faces 971 that can be applied to the substrate 97 when the substrate 97 is transported to the coating apparatus 91 along the line direction 900. On one of the setting faces 971, the thickness of the ink material 99 coated on the setting surface 971 is adjusted in conjunction with the forming roller 914 to form an ink layer 98.

However, in the single-step process, the coating device 91 can only apply the ink material 99 to one of the setting faces 971 of the substrate 97, if it is required to be on the opposite two setting faces 971 of the substrate 97. When the ink material 99 is applied, after coating one of the setting faces 971, it is often necessary to wind up the substrate 97 first, and the other setting surface 971 can be coated again using the coating device 91. In the above-mentioned two-step manufacturing method, not only the working time is long, but also the manufacturing efficiency is lowered, and the equipment components required for the above-mentioned manufacturing method are also complicated, thereby increasing the equipment cost.

More importantly, the coating roller 912 has a large amount of coating material for applying the ink material 99 on the setting surface 971 of the substrate 97, and the coating roller 912 cannot accurately control the amount of the coating material, plus the coating. The device 91 adjusts the thickness of the ink material 99 applied to the substrate 97 only by the forming roller 914, and the effect is not satisfactory. Therefore, the thickness of the ink layer 98 produced by the coating apparatus 91 is uneven and the surface is not flat, so that the defective rate of the product is high and the production cost is increased.

Therefore, the object of the present invention is to provide a manufacturing efficiency Coating equipment and coating method with high equipment cost and high product yield.

Thus, the coating apparatus of the present invention is for coating an ink material on two opposite setting faces of a substrate to form two ink layers respectively coated on the setting surface, the coating apparatus comprising: A base, a conveying mechanism, a forming mechanism, and a leveling mechanism.

The base includes a seat body and a receiving slot defined by the seat body for receiving ink. The conveying mechanism is configured to send the substrate into the receiving groove along a production line and then out of the receiving groove. The conveying mechanism comprises a rotatably mounted in the receiving groove and dipped in the receiving groove. The steering roller in the ink material. The steering roller drives the substrate into the ink material, so that the two setting surfaces of the substrate are dip coated with the ink material, and then the substrate is transferred to the outside of the container.

The forming mechanism is installed in the receiving groove and located downstream of the steering roller, and includes a plurality of scraper rotating members respectively corresponding to opposite sides of the substrate, and the scraping rotating members are respectively rotatably scraped An ink material coated on the setting surface to form the ink layer. The leveling mechanism is installed in the receiving groove and located downstream of the forming mechanism, and includes a plurality of flat rotating members respectively corresponding to opposite sides of the substrate, the flat rotating members respectively rotatably The ink layer is applied against the surface of the ink layer.

The coating method of the present invention is for coating an ink material on two opposite setting faces of a substrate to form two ink layers respectively covering the setting surface, the coating method comprising: dip coating Step: feeding the substrate to a coating device Having the ink material in the receiving tank, the two setting surfaces of the substrate are dip coated with the ink material; and the forming step: conveying the substrate to a forming mechanism of the coating device, the forming mechanism comprising several Correspondingly, the scraping rotating members respectively located on opposite sides of the substrate, rotatably scraping the ink material coated on the setting surface through the scraping rotating members to form the ink layer; and the leveling step: Transporting the substrate to a leveling mechanism of the coating apparatus, the leveling mechanism comprising a plurality of leveling rotating members respectively corresponding to opposite sides of the substrate, rotatably passing through the leveling rotating members The ink layer is applied to level the surface of the ink layer.

The invention has the effect that the invention can simultaneously form the ink layer on two opposite arrangement faces of the substrate, and the design of the foregoing innovative structure can simplify the production line, thereby not only reducing equipment cost, but also saving manufacturing time and improving Manufacturing efficiency. In addition, the ink material coated on the setting surface can be scraped through the forming mechanism to form the ink layer, and the flattening mechanism can be used to flatten the surface of the ink layer to improve product quality, thereby improving the product. Yield reduces production costs.

1‧‧‧Base

11‧‧‧

111‧‧‧ Entrance

112‧‧‧Export

113‧‧‧ discharge opening

12‧‧‧容容槽

13‧‧‧Installation plate

14‧‧‧ Valve

15‧‧‧Level gauge

2‧‧‧Transportation agency

21‧‧‧Transport roller

22‧‧‧Steering wheel

23‧‧‧Clamping roller unit

231‧‧‧First pin wheel

232‧‧‧Second pin wheel

3‧‧‧Forming institutions

31‧‧‧Scraper rotating parts

311‧‧‧ scraping surface

312‧‧‧Scraper guide groove

32‧‧‧ Forming adjustment unit

33‧‧‧Shaping locator

331‧‧‧Shaping positioning base

332‧‧‧Shaping positioning side

34‧‧‧Formed push frame

341‧‧‧ Forming push base

342‧‧‧Formed push side

35‧‧‧Formed pusher

4‧‧‧ leveling agency

41‧‧‧Flating rotating parts

411‧‧‧ by face

42‧‧‧ Leveling adjustment unit

43‧‧‧Leveling locating frame

431‧‧‧Leveling base

432‧‧‧ leveling the side

44‧‧‧Flating push frame

441‧‧‧Flat push base

442‧‧‧Flating push side

45‧‧‧Flating pusher

51‧‧‧Production direction

52‧‧‧Adjustment direction

6‧‧‧Oven equipment

7‧‧‧Ink material

7'‧‧‧Ink

81‧‧‧Substrate

811‧‧‧Setting surface

82‧‧‧Ink layer

S01‧‧‧ dip coating step

S02‧‧‧forming step

S03‧‧‧Leveling steps

D1‧‧‧ distance

D2‧‧‧ distance

Other features and effects of the present invention will be apparent from the following description of the drawings, wherein: FIG. 1 is a schematic view of a device showing the process of coating an ink on a substrate by a general coating apparatus; Is a schematic view of a device showing a preferred embodiment of the coating apparatus of the present invention for coating an ink on a substrate; 3 is a partial enlarged view of FIG. 2; FIG. 4 is a schematic cross-sectional view showing the corresponding relationship between a forming mechanism and the substrate of the preferred embodiment; FIG. 5 is a schematic cross-sectional view of the substrate, mainly showing the same Corresponding relationship between a leveling mechanism of the preferred embodiment and the substrate; and Figure 6 is a block flow diagram of a preferred embodiment of the coating method of the present invention.

Referring to FIG. 2, a preferred embodiment of the coating apparatus of the present invention is one of the implements used in the process of manufacturing a Flexible Printed Circuit Board (FPCB). When a substrate 81 is transported to the coating apparatus along a line direction 51, the coating apparatus is used to apply an ink material 7 on two opposite setting faces 811 of the substrate 81 to make an ink material. 7 forms two ink layers 82 respectively covering the setting faces 811. The substrate 81 is then moved along the line direction 51 to an oven apparatus 6, through which the ink layer 82 is baked to harden it, after which the substrate 81 continues along the line direction. 51 moves to sequentially perform the processes required to manufacture a flexible printed circuit board.

The material of the substrate 81 may be a polyimide (PI) film, a glass fiber cloth, or a flexible printed circuit board on which both sides have been formed, but is not limited to the foregoing examples. The ink material is mainly used to form the insulating ink layer 82, which can protect the copper wire and prevent the electronic component from being soldered to an incorrect place. Further, the ink material 7 may be a photosensitive resin or a thermosetting resin, and a specific material such as polyimide, Epoxy, Polymethylmethacrylate (PMMA), etc., but are not limited thereto. Since the specific structure of the substrate 81 and other processes for manufacturing the flexible printed circuit board are not the focus of the present invention, they will not be described in detail herein.

The coating apparatus comprises: a base 1, a transport mechanism 2 mounted in conjunction with the base 1, and a forming mechanism 3 and a leveling mechanism 4 respectively mounted in the base 1.

The susceptor 1 of the present embodiment includes a seat body 11, a receiving groove 12 defined by the seat body 11 for accommodating the ink material 7, and a plurality of spacers 12 installed in the receiving groove 12 at intervals. The mounting plate body 13 (see Figure 4). The seat body 11 has an inlet 111, an outlet 112 and a discharge opening 113 respectively communicating with the receiving groove 12. The inlet 111 and the outlet 112 respectively supply the substrate 81 into and out of the receiving groove 12, and the discharge opening 113 is located below and the ink material 7 flows out of the receiving groove 12.

In practice, the base 1 may of course also include a valve 14 mounted to the discharge opening 113 and a level gauge 15 mounted in the seat body 11. In use, the switch of the valve 14 can control whether the ink material 7 flows out of the receiving tank 12, and the liquid level of the ink material 7 can be detected through the liquid level gauge 15 to timely replenish the ink material 7 to the It is accommodated in the tank 12. Since the detailed structure of the susceptor 1 and the actions and structures for feeding the ink material 7 into the accommodating groove 12 are not the focus of the present invention, they will not be described in detail.

The conveying mechanism 2 of the present embodiment is configured to feed the substrate 81 into the receiving groove 12 along the line direction 51, and then send the substrate 81 out of the receiving groove 12. The transport mechanism 2 includes a rotatably located base A conveying roller 21 above the seat 1 and a steering roller 22 rotatably mounted in the receiving groove 12 and a clamping roller unit 23.

The conveying roller 21 can feed the substrate 81 from the inlet 111 into the receiving groove 12. The steering roller 22 is immersed in the ink material 7, and the substrate 81 can be immersed in the ink material 7. After the two setting surfaces 811 of the substrate 81 are immersed in the ink material 7, the substrate 81 is further coated. It is transported outside the container slot 12. The clamping roller unit 23 is located above the ink material 7 and can move the substrate 81. The clamping roller unit 23 has a plurality of first clamping wheels 231 located between the inlet 111 and the steering roller 22, and A plurality of second pinch wheels 232 are located between the outlet 112 and the steering roller 22. The first pinch rollers 231 are mutually corresponding to each other and are rotatably clamped to opposite sides of the base material 81, respectively. The second pinch wheels 232 also correspond to each other in pairs, and are respectively rotatably clamped to opposite sides of the base material 81.

Referring to Figures 2, 3 and 4, the forming mechanism 3 of the present embodiment is mounted in the receiving slot 12 and located downstream of the steering roller 22 between the outlet 112 and the steering roller 22, that is, the When the substrate 81 moves in the line direction 51, it passes through the turning roller 22 before passing through the forming mechanism 3. The forming mechanism 3 includes a plurality of scraper rotating members 31 correspondingly respectively located on opposite sides of the base material 81, and a forming adjustment unit 32 for controlling the distance d1 between the axial centers of the scraping rotating members 31. .

The scraping rotors 31 are rotatably mounted between the mounting plates 13 and applied to the ink material 7' coated on the setting surface 811 opposite to the line direction 51. Further, the ink material 7' can be scraped to form the ink layer 82 having a desired thickness. Each scraper rotating member 31 Each has a scraping surface 311 which can scrape the ink material 7' on the setting surface 811, and a spirally extending recessed surface of the scraping surface 311 for the scraped ink material 7' to flow out of the setting surface The scraper guide groove 312 of the 811.

The forming adjustment unit 32 can move one of the scraping rotating members 31 closer to or away from the other scraping rotating member 31 to adjust the distance d1 between the axial centers of the scraping rotating members 31, thereby adjusting the ink. The thickness of layer 82. The forming adjustment unit 32 has a forming positioning frame 33 fixedly mounted between the mounting plate bodies 13, a forming push frame 34 movably mounted between the mounting plate bodies 13, and a plurality of separately mounted Forming the pushing member 35 of the forming push frame 34 on the mounting plate body 13 and extending in an adjusting direction 52, the forming positioning frame 33 and the forming pushing frame 34 are respectively located on opposite sides of the scraping rotating member 31 .

The forming locator 33 has a forming positioning base 331 that is linearly extended between the mounting plate bodies 13, and two shaped positioning side portions 332 that extend outwardly from the forming positioning bases 331, respectively. The side portion 332 is rotatably provided at the opposite end of one of the scraper rotating members 31. The forming push frame 34 has a forming push base 341 extending linearly between the mounting plate bodies 13 and two forming push side portions 342 extending outwardly from the forming push bases 341, respectively. The portion 342 is rotatably provided at the opposite end of the other scraping rotor 31.

The forming and pushing members 35 can respectively move the forming and pushing base portion 341 along the adjusting direction 52, and then move the scraping rotating member 31 attached to the forming and pushing side portion 342 to move, so that the scraping rotating member 31 can be Another scraping rotating member 31 is moved closer to or away from the adjusting direction 52 to adjust the distance d1 between the axial centers of the scraping rotating members 31. The smaller the distance d1 is, the thinner the thickness of the ink layer 82 is. The larger the distance d1 is, the thicker the thickness of the ink layer 82 is, whereby the thickness of the ink layer 82 is adjusted.

Referring to Figures 2, 3 and 5, the leveling mechanism 4 of the present embodiment is mounted in the receiving slot 12 and located downstream of the forming mechanism 3 between the outlet 112 and the steering roller 22, that is, When the substrate 81 moves in the line direction 51, it passes through the forming mechanism 3 before passing through the leveling mechanism 4. The leveling mechanism 4 includes a plurality of flattening rotating members 41 correspondingly located on opposite sides of the substrate 81, and a leveling adjustment for controlling the distance d2 between the axes of the leveling rotating members 41. Unit 42.

The flattening rotating members 41 are rotatably mounted between the mounting plate bodies 13 respectively, and apply a force corresponding to the ink layer 82 opposite to the line direction 51 to level the ink layer 82. The surface of the ink layer 82 is flat to enhance product quality. Each of the flattening rotating members 41 has an abutment surface 411 that is securely opposed to the surface of the ink layer 82 corresponding thereto.

The leveling adjusting unit 42 can move one of the flat rotating members 41 closer to or away from the other flat rotating member 41, thereby adjusting the distance d2 between the axes of the flat rotating members 41 to level the The surface of the ink layer 82 is described. The leveling adjustment unit 42 has a leveling positioning frame 43 fixedly mounted between the mounting plate bodies 13, a leveling pushing frame 44 movably mounted between the mounting plate bodies 13, and a plurality Installed on the mounting plate bodies 13 and can push the leveling push frame 44 along the adjustment direction 52 Leveling the pusher 45.

The leveling locating frame 43 and the leveling cradle 44 are respectively located on opposite sides of the leveling rotating member 41, and the leveling locating frame 43 has a flatteningly mounted flattening between the mounting plates 13 The positioning base 431 and the two flat positioning side portions 432 respectively extending outward from the flat positioning base portion 431 and rotatably provided at opposite ends of one of the flattening rotating members 41 are provided. The leveling push frame 44 has a flattening push base 441 extending linearly between the mounting plate bodies 13, and two of the flattening push bases 441 extending outwardly for the other flattening rotating member 41. The opposite end is rotatably disposed to flatten the push side 442.

The leveling pushing members 45 respectively drive the leveling pushing base portion 441 to move along the adjusting direction 52, and further move the flattening rotating member 41 mounted on the leveling pushing side portion 442 to move the flattening rotating member 41. Moving or moving away from the other leveling rotating member 41, thereby adjusting the distance d2 between the axes of the flat rotating members 41 to match the substrate 81 or the ink layer 82 of different thicknesses to ensure the leveling The abutting faces 411 of the rotating member 41 are all reliably resisted to level the surface of the ink layer 82.

It is to be noted that the forming pusher 35 and the leveling pusher 45 of the present embodiment are both in the form of a pneumatic cylinder. Of course, in practice, the forming pusher 35 and the leveling pusher 45 may also be oil pressure. The form of a cylinder or an empty hydraulic cylinder. In addition, in this embodiment, the conveying roller 21, the steering roller 22, the clamping roller unit 23, the scraping rotating members 31, and the flattening rotation are driven by a plurality of driving members (not shown). The member 41 is rotated, and the aforementioned driving member such as a servo motor is not a technique for driving the rotation of the member. The focus of the invention is not explained.

Referring to Figures 2, 3 and 6, a preferred embodiment of the coating method of the present invention is one of the steps of manufacturing a flexible printed circuit board, and comprises the following steps: dip coating step S01: feeding the substrate 81 to the coating The two mounting faces 811 of the substrate 81 are dip coated with the ink material 7 in the receiving tank 12 of the apparatus.

Specifically, when the substrate 81 is transported to the coating device along the line direction 51, the substrate 81 is fed into the receiving groove 12 through the inlet 111 through the conveying mechanism 2, and then transmitted through The first clamping wheels 231 are respectively rotatably clamped on opposite sides of the substrate 81, and cooperate with the steering roller 22 to drive the substrate 81 into the ink material 7, so that the two of the substrate 81 The setting surface 811 is dip coated with the ink material 7.

Forming step S02: conveying the substrate 81 to the forming mechanism 3 of the coating apparatus, and rotatably scraping the ink material 7' coated on the setting surface 811 through the scraping rotating members 31 to form a thickness The ink layer 82 is ideal.

Specifically, the second pinch wheel 232 of the transport mechanism 2 is rotatably clamped to the opposite side of the substrate 81, so that the line direction 51 of the substrate 81 can be transmitted outside the container slot 12. The substrate 81 is transported from the ink material 7 to the forming mechanism 3, and at this time, the ink material 7' coated on the setting surface 811 is scraped through the scraping surface 311 of the scraping rotating member 31 to form a The ink layer 82, the scraped ink material 7' can flow out through the setting surface 811 through the scraping guide grooves 312, and drop down into the ink material 7 accommodated in the receiving groove 12, To use again.

It is further explained that when the substrate 81 passes through the forming mechanism 3, the thickness of the ink layer 82 can be adjusted by controlling the distance d1 between the axes of the scraping rotating members 31 through the forming adjusting unit 32. . Further, in this embodiment, the thickness of the ink layer 82 can be adjusted by controlling the rotational speed of the scraping rotating member 31 to scrape the ink material 7' through driving members not shown. That is, the faster the rotational speed of the scraping member 31 is, the larger the amount of the ink material 7' is scraped, and the thinner the thickness of the ink layer 82 thus produced. Therefore, the means for the shaping mechanism 3 to adjust the thickness of the ink layer 82 is not limited to the form disclosed in the embodiment.

Leveling step S03: conveying the substrate 81 to the leveling mechanism 4 of the coating apparatus, rotatably abutting against the ink layer 82 through the flattening rotating members 41 to level the surface of the ink layer 82 The surface of the ink layer 82 is flattened to enhance product quality.

Specifically, the substrate 81 is transported by the transport mechanism 2 along the line direction 51 to the leveling mechanism 4 by the forming mechanism 3, and at this time, the abutting surface 411 of the flattening rotating member 41 is transmitted. The ink layer 82 is rotatably supported to planarize the surface of the ink layer 82 to enhance the surface quality of the ink layer 82. Then, the substrate 81 is transported to the outside of the receiving slot 12 through the second pinch pulleys 232, so that the substrate 81 can be moved along the line direction 51 to sequentially manufacture the flexible printed circuit. The process required for the board.

It can be seen from the above description that it takes two steps to coat the ink on the two setting faces of the substrate compared with the general coating equipment, which not only takes time and reduces the manufacturing efficiency, but also the components of the coating equipment are complicated. Increase Add equipment costs. In contrast, the present invention drives the substrate 81 to be immersed in the ink material 7 through the steering roller 22, so that the two setting surfaces 811 of the substrate 81 are simultaneously dip coated with the ink material 7. Therefore, the present invention can complete the double process in one operation. Surface coating action. Therefore, the present invention can simplify the line design, which not only reduces equipment costs, but also saves manufacturing time and improves manufacturing efficiency.

More importantly, the present invention scrapes the ink material 7' coated on the setting surface 811 through the forming mechanism 3 to form the ink layer 82, and the scraping surface 311 of the scraping rotating member 31 is concave. Provided by spirally extending the scraper guide grooves 312 (see Fig. 4), the aforementioned innovative structure can effectively scrape the ink material 7' on the setting surface 811, and the scraped ink material 7' can also pass through the same The scraper guide groove 312 flows out, thereby allowing the forming mechanism 3 to precisely adjust the thickness of the ink layer 82 to be produced. The foregoing design cooperates with the leveling mechanism 4 to level the surface of the ink layer 82, thereby enhancing the surface quality of the ink layer 82. Therefore, the coating apparatus of the present invention can produce the ink layer 82 which is ideal in both thickness and surface condition, thereby increasing flexibility and convenience in use. In addition, the present invention can control the distance d1 between the axes of the scraping rotating members 31 through the forming adjustment unit 32, and the coating device of the present invention can accurately control the desired preparation through the aforementioned novel design. The thickness of the ink layer 82 thus further enhances manufacturing precision.

In summary, the present invention can simultaneously form the ink layer 82 on the two mounting faces 811 of the substrate 81. Through the design of the innovative structure, the production line can be simplified, the equipment cost can be reduced, and manufacturing can be saved. Time to increase manufacturing efficiency. In addition, the thickness of the ink layer 82 can be adjusted through the forming mechanism 3, and the ink layer 82 can be made by the flattening mechanism 4. The surface is flat and the quality is improved, so that the product yield can be improved and the production cost can be reduced, so that the object of the present invention can be achieved.

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.

1‧‧‧Base

11‧‧‧

111‧‧‧ Entrance

112‧‧‧Export

113‧‧‧ discharge opening

12‧‧‧容容槽

13‧‧‧Installation plate

14‧‧‧ Valve

15‧‧‧Level gauge

2‧‧‧Transportation agency

21‧‧‧Transport roller

22‧‧‧Steering wheel

23‧‧‧Clamping roller unit

231‧‧‧First pin wheel

232‧‧‧Second pin wheel

3‧‧‧Forming institutions

31‧‧‧Scraper rotating parts

32‧‧‧ Forming adjustment unit

4‧‧‧ leveling agency

41‧‧‧Flating rotating parts

42‧‧‧ Leveling adjustment unit

51‧‧‧Production direction

6‧‧‧Oven equipment

7‧‧‧Ink material

81‧‧‧Substrate

811‧‧‧Setting surface

82‧‧‧Ink layer

Claims (10)

A coating apparatus for coating an ink material on two opposite setting faces of a substrate to form two ink layers respectively covering the setting surface, the coating device comprising: a base The utility model comprises a seat body, and a receiving groove defined by the seat body for accommodating the ink material; a conveying mechanism for feeding the substrate into the receiving groove along a production line direction And then sent out of the container, the conveying mechanism includes a steering roller rotatably mounted in the receiving groove and immersed in the ink material, the steering roller drives the substrate into the ink material to make the base The two setting surfaces of the material are dip coated with the ink material and then transferred to the outside of the container; a forming mechanism is installed in the receiving groove and located downstream of the steering roller, and includes several corresponding The scraping rotating members respectively located on opposite sides of the substrate, the scraping rotating members respectively rotatably scraping the ink material coated on the setting surface to form the ink layer; and a flattening mechanism, Installed in the receiving groove and located under the forming mechanism At, and comprising a plurality of correspondingly located flattened side rotational member opposite to the substrate, are rotatably abuts against said ink layer in a leveling of the ink layer surface of the rotatable member such leveling. The coating apparatus of claim 1, wherein each of the scraper rotating members has a scraping surface that scrapes the ink material on the setting surface, and a spirally extending recessed surface of the scraping surface And the scraped ink material flows out of the scraping guide groove of the setting surface, and each flattening rotating piece They all have an abutment surface that reliably counters the surface of the ink layer corresponding thereto. The coating apparatus of claim 1, wherein the forming mechanism further comprises a shaping adjustment unit for controlling a distance of the scraping rotating members to adjust a thickness of the ink layer. The coating apparatus of claim 3, wherein the base further comprises a plurality of mounting plates that are mounted in the receiving groove at intervals, and the forming adjustment unit has a fixed mounting plate on the mounting plate a forming locator between the bodies and rotatably disposed by one of the scraping rotating members, a forming cradle movably mounted between the mounting plates and rotatably disposed by the other scraping rotating member, And a plurality of forming push members respectively mounted on the mounting plate bodies and capable of pushing the forming push frame in an adjusting direction, the forming positioning frames and the forming push frames being respectively located on opposite sides of the scraping rotating members. The coating apparatus of claim 1, wherein the leveling mechanism further comprises a leveling adjustment unit for controlling a distance of the leveling rotating members. The coating apparatus of claim 1, wherein the base body of the base has an inlet that communicates with the receiving groove for the substrate to enter the receiving groove, and a connecting port for the base The material exits the outlet of the receiving tank, and the forming mechanism and the leveling mechanism are located between the outlet and the turning roller. The coating apparatus of claim 6, wherein the conveying mechanism further comprises a conveying roller located above the base and feeding the substrate from the inlet into the receiving groove. The coating apparatus of claim 6, wherein the conveying mechanism further comprises a clamping roller unit mounted in the receiving groove to drive the substrate to move, the clamping roller unit having a plurality of the positioning at the inlet The first pinch wheel between the steering rollers, the first pinch wheels are respectively corresponding to each other and are respectively rotatably clamped to opposite sides of the substrate. The coating apparatus of claim 6, wherein the conveying mechanism further comprises a clamping roller unit mounted in the receiving groove to drive the substrate to move, the clamping roller unit having a plurality of the outlets at the outlet A second clamping wheel between the steering rollers, the second clamping wheels are respectively corresponding to each other and rotatably respectively clamped to opposite sides of the substrate. A coating method for coating an ink material on two opposite setting faces of a substrate to form two ink layers respectively coated on the setting surface, the coating method comprising: dip coating step : feeding the substrate into a receiving tank containing an ink material in a coating device, so that the two setting surfaces of the substrate are dip coated with the ink material; and forming step: conveying the substrate to the coating a forming mechanism of the cloth apparatus, the forming mechanism comprising a plurality of scraper rotating members respectively corresponding to opposite sides of the substrate, and the scraping rotating member rotatably scrapes the ink coated on the setting surface Forming the ink layer; and leveling step: transporting the substrate to a leveling mechanism of the coating apparatus, the leveling mechanism including a plurality of leveling rotations respectively corresponding to opposite sides of the substrate And rotatably abutting the ink layer through the flattening rotating members to level the surface of the ink layer.