Coating machine

Abstract

The utility model relates to the technical field of industrial equipment, and discloses a coating machine which comprises a charging tray, a printing roller, a compression roller, a scraper and a drainage piece, the charging tray is provided with a trough, and the trough is used for containing coating; the plate roller is rotationally and partially located in the material groove and used for being partially immersed in the coating in the material groove, and the coating in the material groove is attached to the roller surface of the plate roller during rotation; the compression roller is rotatably arranged above the printing roller, and a coating area for coating is formed between the compression roller and the printing roller; the scraper is positioned above the charging tray, is in contact with the roller surface on one side of the printing roller, and is used for scraping part of the coating on the roller surface of the printing roller; the drainage piece is arranged below the scraper and extends downwards from the side of the plate roller to the trough; and the drainage piece is used for draining the coating scraped by the scraper from the roller surface of the plate roller into the trough, so that the coating effect can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial equipment technical field, concretely relates to a coating machine. BACKGROUND

[0002] The coating machine is a kind of machine that coating material on the roll surface of version roll is coated on the substrate surface by version roll rotation.

[0003] At present, coating machine is usually provided with doctor blade to scrape part of coating material on the roll surface of version roll to adjust the covering thickness of coating material on the roll surface of version roll, so that coating material distribution on the roll surface of version roll is more uniform.The coating material scraped by doctor blade is easy to generate air bubble when falling into coating tank, which affects coating effect. SUMMARY

[0004] The utility model discloses at least one of the technical problems existing in the prior art is solved.The utility model provides a coating machine, which can improve coating effect.

[0005] According to the coating machine of the utility model embodiment, including tray, version roll, compression roll, doctor blade and drainage member, tray is equipped with material groove, and material groove is used for accommodating coating material;Version roll is rotatably located in material groove partly, is used for partly immersed in the coating material in material groove, and makes the coating material in material groove adhere to the roll surface of version roll when rotating;Compression roll is rotatably arranged above version roll, and forms coating area for coating between version roll;Doctor blade is located above tray, and is in contact with the roll surface of one side of version roll, and is used for scraping part of coating material on the roll surface of version roll;Drainage member is arranged below doctor blade, and extends downward from the side of version roll to material groove;Drainage member is used for draining the coating material scraped by doctor blade from the roll surface of version roll into material groove.

[0006] According to the coating machine of the utility model embodiment, at least has following beneficial effect:The coating machine of the utility model embodiment is by setting doctor blade above tray, and drainage member is arranged below doctor blade, and extends downward from the side of version roll to material groove, doctor blade can scrape part of coating material on the roll surface of version roll, and drainage member can receive the coating material scraped by doctor blade and drain it into material groove, so that the situation that the coating material scraped by doctor blade from the roll surface of version roll directly falls into material groove and forms air bubble can be improved, the effect of coating is guaranteed, and the splashing situation caused by the coating material scraped by doctor blade from the roll surface of version roll directly falling into material groove can also be improved, which helps to reduce the corrosion of other structural members of coating machine caused by coating splashing, and prolongs the service life of coating machine.

[0007] According to some embodiments of the utility model, the side of drainage member towards doctor blade has drainage surface, and the drainage surface extends downward from the side of version roll to material groove, and is used for draining the coating material scraped by doctor blade from the roll surface of version roll into material groove.

[0008] According to some embodiments of the present application, the coating machine comprises two mounting seats, the two mounting seats are connected to the material tray oppositely; the flow guide member is adjustably connected between the two mounting seats.

[0009] According to some embodiments of the present application, the coating machine further comprises an adjusting member, the adjusting member is connected to the mounting seat and drivingly connected with the flow guide member, the adjusting member and the flow guide member are located on two opposite sides of the mounting seat; the adjusting member has a locking state and an unlocking state, when the adjusting member is in the locking state, the adjusting member fixes the flow guide member to the mounting seat; when the adjusting member is in the unlocking state, the adjusting member can drive the flow guide member to rotate.

[0010] According to some embodiments of the present application, the coating machine further comprises two material blocking plates, the two material blocking plates are protruded on the side of the flow guide member facing the doctor blade and are arranged in a spaced manner along the distribution direction of the two mounting seats; the material blocking plate is used for blocking the flow of the coating on the flow guide member to one side of the mounting seat.

[0011] According to some embodiments of the present application, the distance between the two material blocking plates gradually approaches from the side close to the plate roller to the side away from the plate roller.

[0012] According to some embodiments of the present application, the flow guide member has a material blocking part, the material blocking part is arranged in a gap with the plate roller, and the material blocking part is used for blocking part of the coating on the surface of the plate roller.

[0013] According to some embodiments of the present application, the rotation axis of the plate roller is parallel to the horizontal plane; the material blocking part is located below the rotation axis, and the doctor blade is located above the rotation axis.

[0014] According to some embodiments of the present application, the outer surface of the flow guide member is covered with a corrosion-resistant layer.

[0015] According to some embodiments of the present application, the flow guide member and the liquid surface of the coating in the trough are arranged in a spaced manner.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, some will become apparent from the following description, or will be understood by those skilled in the art through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in combination with the drawings and embodiments, wherein:

[0018] Figure 1 A structure schematic diagram of the coating machine provided by the embodiments of the present application is shown;

[0019] Figure 2 Another structure schematic diagram of the coating machine provided by the embodiments of the present application is shown from another perspective;

[0020] Figure 3 A structure schematic diagram of the coating machine provided by the embodiments of the present application is shown; Figure 2An enlarged structural schematic view of the middle III.

[0021] Reference numerals:

[0022] Coating machine 100;

[0023] Tray 110;trough 111;

[0024] Roller 130;press roller 150;

[0025] Scraper 170;scraper holder 171;scraper body 173;

[0026] Drain 190;drain surface 191;material blocking part 193;first rotating part 195;limiting part 197;

[0027] Mounting seat 210;semicircular ring groove 211;rotating hole 213;

[0028] Adjusting part 230;connecting part 250;material blocking plate 270;coating area 290;base material 300. DETAILED DESCRIPTION

[0029] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present application, and cannot be understood as a limitation of the present application.

[0030] In the description of the present application, it should be understood that the orientation description, such as the orientation or position relationship indicated by up, down, front, back, left, right, etc. is based on the orientation or position relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as a limitation of the present application.

[0031] In the description of the present application, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, more than, etc. are understood as not including the number, above, below, etc. are understood as including the number. If it is described as first, second, it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or the sequence of indicated technical features.

[0032] In the description of the present application, unless otherwise explicitly limited, the words such as setting, installing, connecting, etc. should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the present application according to the specific content of the technical scheme.

[0033] In the description of this utility model, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Please see Figures 1 to 3 This application provides a coating machine 100, which can be used to coat the coating material required on the roller surface of a substrate 300. The substrate 300 can refer to the substrate 300 of the battery cell electrode or other substrates 300.

[0035] The coating machine 100 includes a material tray 110, a printing roller 130, a pressure roller 150, a doctor blade 170, and a flow guide 190.

[0036] The material tray 110 is provided with a material trough 111, which is used to hold the coating.

[0037] The coating can be formulated according to requirements; generally, the coating is a viscous slurry.

[0038] The rotatable portion of the printing roller 130 is located within the material trough 111. Figure 1 The dotted arrow in the figure indicates the rotation direction of the printing roller 130. It is used to partially immerse the coating in the material tank 111. When rotating, the coating in the material tank 111 adheres to the roller surface of the printing roller 130, so that the coating for coating can be attached to the roller surface of the printing roller 130, which facilitates the subsequent coating of the substrate 300.

[0039] As an example, the printing roller 130 includes a first roller body and two first connecting parts. The first roller body is generally cylindrical, and the two first connecting parts are respectively connected to both ends of the first roller body. The coating machine 100 may also include a support mechanism, to which the two first connecting parts can be connected. The support mechanism can drive the printing roller 130 to rotate and lift. The opening of the material trough 111 can be located at the top of the material tray 110. The first roller body can enter the material trough 111 from the opening, with a portion located in the material trough 111 and a portion immersed in the coating material in the material trough 111, so that when rotating, the coating material in the material trough 111 will adhere to the outer peripheral surface of the first roller body (i.e., the roller surface of the printing roller 130). The material tray 110 may also be connected to the support mechanism, which can also drive the material tray 110 to lift, so as to facilitate cleaning the material tray 110 and injecting coating material into the material trough 111.

[0040] It should be noted that, unless otherwise specified, the roller surface mentioned below refers to the roller surface of printing roller 130.

[0041] The pressure roller 150 is rotatably arranged above the plate roller 130 and forms a coating area 290 with the plate roller 130 for coating, and the substrate 300 can be coated in the coating area 290.

[0042] As an example, the pressure roller 150 has a shape substantially the same as the plate roller 130, and the pressure roller 150 can include a second roller body substantially in a cylindrical shape and two second connecting portions respectively connected to two ends of the second roller body. The two second connecting portions can be connected to a support mechanism, and the support mechanism can drive the pressure roller 150 to rotate and lift to adjust the gap size between the plate roller 130 and the pressure roller 150. Understandably, the gap between the plate roller 130 and the pressure roller 150 can be the coating area 290, and the substrate 300 can be arranged in the gap to contact the plate roller 130, so that the coating on the roller surface of the plate roller 130 can be coated on the surface of the substrate 300.

[0043] The doctor blade 170 is located above the tray 110 and contacts the roller surface of one side of the plate roller 130, and is used to scrape part of the coating on the roller surface of the plate roller 130, so as to adjust the thickness and uniformity of the coating on the roller surface, and help to improve the coating effect.

[0044] As an example, the doctor blade 170 can include a doctor blade holder 171 and a doctor blade body 173 connected to each other. The doctor blade body 173 is used to scrape part of the coating on the roller surface of the plate roller 130. The doctor blade holder 171 can be connected to a support mechanism, and the support mechanism can drive the doctor blade holder 171 to move, and the doctor blade body 173 moves with the doctor blade holder 171 to adjust the included angle between the doctor blade body 173 and the roller surface of the plate roller 130 and the abutting strength between the doctor blade body 173 and the roller surface of the plate roller 130, so as to obtain the required thickness and uniformity of the coating on the roller surface of the plate roller 130.

[0045] The flow guide 190 is arranged below the doctor blade 170 and extends downward from the side of the plate roller 130 to the trough 111, and the flow guide 190 is used to guide the coating scraped by the doctor blade 170 from the roller surface of the plate roller 130 into the trough 111, so as to improve the situation that the coating scraped by the doctor blade 170 from the roller surface of the plate roller 130 directly falls into the trough 111 to form bubbles, ensure the coating effect, and also improve the splashing situation caused by the coating scraped by the doctor blade 170 from the roller surface of the plate roller 130 directly falling into the trough 111, help to reduce the corrosion of other structural parts of the coating machine 100 caused by the splashing of the coating, and prolong the service life of the coating machine 100.

[0046] As an example, the flow guide 190 can have a plate-like structure, and can include opposite first and second sides. The first side can be located on a side of the flow guide 190 facing the plate roller 130, and the second side can be located on a side of the flow guide 190 away from the plate roller 130. In a vertical direction, the first side can be located above the second side, and the second side can be close to or partially extend into the trough 111. An upper surface of the flow guide 190 can guide the coating removed from the roller surface of the plate roller 130 by the doctor blade 170 into the trough 111.

[0047] The second side of the flow guide 190 can extend into the trough or be located outside the trough. When the second side of the flow guide 190 extends into the trough, the second side can be spaced apart from the side wall of the trough 111 to facilitate the flow of the coating and avoid the accumulation of the coating.

[0048] In some embodiments, the flow guide 190 and the doctor blade 170 can be spaced apart.

[0049] In some embodiments, the flow guide 190 can be spaced apart from the liquid level of the coating in the trough 111, which can help to avoid corrosion of the flow guide 190 when the flow guide 190 is immersed in the coating in the trough 111, thereby prolonging the service life of the flow guide 190, and also helping to reduce the mixing of the material of the flow guide 190 into the coating after corrosion, which can affect the coating effect of the coating.

[0050] In some embodiments, the flow guide 190 can have a material blocking portion 193, which can be spaced apart from the plate roller 130. The material blocking portion 193 can be used to block part of the coating on the roller surface of the plate roller 130. In this way, the material blocking portion 193 can remove part of the coating on the roller surface of the plate roller 130 in advance, thereby reducing the adhesion thickness of the coating on the roller surface of the plate roller 130, and reducing the occurrence of the phenomenon of the coating (such as large particles of the coating) being stuck under the doctor blade 170 and causing the coating on the roller surface to be pulled and dragged.

[0051] In addition, the spacing between the material blocking portion 193 and the plate roller 130 can also prevent the material blocking portion 193 from blocking too much coating on the plate surface, which can cause the plate roller 130 to be dry.

[0052] As an example, the material blocking portion 193 can be located on the first side of the flow guide 190, or the first side can serve as the material blocking portion 193. The distance between the material blocking portion 193 and the roller surface (i.e., the width of the gap) can be set according to requirements. For example, the distance between the material blocking portion 193 and the roller surface can be ≥1 mm and ≤2 mm.

[0053] In some embodiments, the rotation axis of the plate roller 130 can be parallel to the horizontal plane, and the material blocking portion 193 can be located below the rotation axis, which can help to reduce the distance between the material blocking portion 193 and the liquid level of the coating in the trough 111, reduce the falling distance of the coating blocked by the material blocking portion 193 from falling into the trough 111, and thus can improve the situation of forming bubbles or splashing in the trough 111.

[0054] The doctor blade 170 can be located above the rotation axis, which can better scrape the coating on the roller surface, and help to make the coating on the roller surface more uniform.

[0055] In addition, since the material blocking portion 193 is located below the rotation axis, and the doctor blade 170 can be located above the rotation axis, the flow guide 190 can better catch the coating scraped by the doctor blade 170 from the roller surface, which can help to improve the flow guiding effect of the flow guide 190 and reduce the situation of the coating directly falling into the trough 111 over the flow guide 190.

[0056] As an example, the diameter of the plate roller 130 can be ≥ 250 mm and ≤ 400 mm. In the vertical direction, the distance between the material blocking portion 193 and the rotation axis of the plate roller 130 can be ≥ 10 mm and ≤ 30 mm.

[0057] As another example, the diameter of the plate roller 130 can be ≥ 400 mm and ≤ 700 mm. In the vertical direction, the distance between the material blocking portion 193 and the rotation axis of the plate roller 130 can be ≥ 100 mm and ≤ 150 mm.

[0058] In some embodiments, the side of the flow guide 190 towards the doctor blade 170 can have a flow guiding surface 191, which can extend downward from the side of the plate roller 130 towards the trough 111, for guiding the coating scraped by the doctor blade 170 from the roller surface of the plate roller 130 into the trough 111, so that the flow guiding surface 191 can be inclined to be above the liquid level of the coating in the trough 111, which can help to more smoothly guide the coating scraped by the doctor blade 170 from the roller surface into the trough 111.

[0059] The flow guiding surface 191 can be an inclined plane, which can help the coating to flow more smoothly.

[0060] The flow guiding surface 191 extends downward from the side of the plate roller 130 towards the trough 111, which can specifically refer to that the distance between the flow guiding surface 191 and the liquid level of the coating in the trough 111 gradually decreases from the side close to the plate roller 130 to the side away from the plate roller 130.

[0061] It should be noted that, in the case that the coating in the trough 111 does not produce fluctuations, the liquid level of the coating in the trough 111 is approximately parallel to the horizontal plane.

[0062] In some embodiments, the coating machine can include two mounting seats 210 oppositely connected to the tray 110 to be fixed on the tray 110, which improves the compactness of the overall structure of the coating machine 100.

[0063] As an example, the two mounting seats 210 can be connected to the opposite side walls of the tank 111 and located at the top of the tray 110.

[0064] The flow guide 190 is adjustably connected between the two mounting seats 210 and located below the doctor blade 170, so that the width of the gap between the flow guide 190 and the roller surface can be adjusted, and the included angle between the flow guide 190 and the horizontal plane can also be adjusted to adjust the flow guiding effect of the flow guide 190.

[0065] It can be understood that when the rotation angle of the flow guide 190 is adjusted, the distance between the flow guide 190 and the liquid level of the coating in the tank 111 can also be changed.

[0066] The flow guide 190 can be adjusted in various ways.

[0067] As an example, the flow guide 190 is detachably connected between the two mounting seats 210. The two mounting seats 210 can be identical in structure. Taking one of the mounting seats 210 as an example, a plurality of strip-shaped clamping grooves can be arranged on the mounting seat 210, and the plurality of strip-shaped clamping grooves can be distributed radially. The included angle between the extension direction of each strip-shaped clamping groove and the horizontal plane is different. The strip-shaped clamping grooves can be adapted to the cross-sectional shape of the flow guide 190, and the end of the flow guide 190 can be selectively clamped in one of the strip-shaped clamping grooves, so that different rotation angles can be obtained by clamping the flow guide 190 in the required strip-shaped clamping groove.

[0068] As another example, the end of the flow guide 190 can be provided with a first rotating portion 195 and a limiting portion 197. The mounting seat 210 can be provided with a semicircular ring groove 211 and a rotating hole 213. The semicircular ring groove 211 can surround the rotating hole 213 and be arranged concentrically. The first rotating portion 195 is rotatably inserted into the rotating hole 213. The limiting portion 197 is inserted into the semicircular ring groove 211 and rotates along the extension direction of the semicircular ring groove 211 when the flow guide 190 rotates.

[0069] The coating machine 100 can further comprise a positioning structure. When the drainage member 190 is rotated to a desired angle, the positioning structure can be connected between the drainage member 190 and the mounting base 210 to fix the drainage member 190 and the mounting base 210, and position the drainage member 190 at the current position. For example, the end surface of the drainage member 190 can be provided with a first fixing hole, and the mounting base 210 can be provided with a plurality of second fixing holes distributed along the rotation path of the first fixing hole. When the drainage member 190 is rotated to a desired angle, the first fixing hole and the corresponding second fixing hole can be opposite, and the positioning structure can be inserted into the first fixing hole and the second fixing hole to position the drainage member 190 at the desired position. The positioning structure can adopt a light rod structure, or a threaded structure such as a screw, a stud or other threaded structure, and the corresponding first fixing hole can adopt a threaded hole matched with the threaded structure.

[0070] It should be noted that the drainage member 190 can also be adjusted in other ways to adjust the rotation angle, and the above is only an example for understanding.

[0071] In some embodiments, the coating machine 100 can further comprise an adjusting member 230, which can be connected to the mounting base 210 and drivingly connected to the drainage member 190, so as to facilitate flexible adjustment of the rotation angle of the drainage member 190 by the adjusting member 230.

[0072] The adjusting member 230 and the drainage member 190 are located on opposite sides of the mounting base 210, so that the adjusting member 230 can be located on the outside of the mounting base 210, and the user can operate the adjusting member 230 conveniently.

[0073] The adjusting member 230 can have a locked state and an unlocked state.

[0074] When the adjusting member 230 is in the locked state, the adjusting member 230 can fix the drainage member 190 to the mounting base 210 to fix the drainage member 190 at a desired angle, so that the drainage can be stable.

[0075] When the adjusting member 230 is in the unlocked state, the adjusting member 230 can drive the drainage member 190 to rotate, so as to flexibly adjust the rotation angle of the drainage member 190.

[0076] As an example, the adjusting member 230 can adopt a self-locking hand wheel, which can be connected to the mounting base 210 and drivingly connected to the drainage member 190, so as to adjust the locked state and the unlocked state of the drainage member 190 by the self-locking hand wheel. The self-locking hand wheel can adopt a mechanical self-locking hand wheel, an electromagnetic self-locking hand wheel or other types of self-locking hand wheels, and the specific implementation can refer to the prior art, which will not be described here.

[0077] As another example, the adjusting member 230 can include a mounting portion and a second rotating portion, the mounting portion can be connected to the mounting base 210. The mounting portion can have a ring structure, and the second rotating portion can be rotatably connected to the inner ring of the mounting base 210.

[0078] The mounting base 210 can include a first support plate, a second support plate and a third support plate connected in sequence. The first support plate can be connected to the outside of the tray 110, for example, the first support plate and the tray 110 can be fixedly connected through a fixing member, which can be a bolt, a screw, a rivet or other fixing structure.

[0079] The second support plate can abut against the top surface of the tray 110. The third support plate can extend upward from the second support plate. The third support plate can be provided with the semicircular groove 211 and the rotating hole 213 in the above example. The end of the drainage member 190 can be provided with a first rotating portion 195 and a limiting portion 197. The first rotating portion 195 can be inserted into the rotating hole 213 and connected to the second rotating portion. The second rotating portion can drive the first rotating portion 195 to rotate, so as to drive the drainage member 190 to rotate. The limiting portion 197 can be inserted into the semicircular groove 211. The limiting portion 197 can rotate along the extension direction of the semicircular groove 211 with the rotation of the drainage member 190, which helps the rotation of the drainage member 190 to be more stable. The groove wall of the semicircular groove 211 can limit the limiting portion 197, which helps the rotation of the drainage member 190 to be more stable.

[0080] When it is needed to fix the drainage member 190 at a desired position, the second rotating portion and the mounting portion can be fixed through a fixing member, so that the adjusting member 230 is switched to the locked state. The fixing member can adopt a bolt, a screw, a rivet or other fixing structure. When it is needed to switch the adjusting member 230 to the unlocked state, the fixing member can be disassembled.

[0081] In some embodiments, the drainage member 190 has a substantially rectangular plate structure. The drainage member 190 can include a drainage surface 191, a first side surface, a bottom surface and a second side surface connected in sequence between the drainage surface 191 and the bottom surface.

[0082] The first side surface can be the side surface of the drainage member 190 facing the plate roller 130. The first side surface and the bottom surface can be inversely beveled to form a first inclined surface. The first inclined surface can be arranged in a gap with the plate roller 130. It can be understood that the inversely beveled position between the first side surface and the bottom surface is the blocking portion 193.

[0083] The first side surface and the drainage surface 191 can also be inversely beveled to form a second inclined surface. The second inclined surface helps to improve the accumulation of paint falling from the squeegee 170 in the triangular gap between the first side surface and the roller surface, and helps the paint to flow more smoothly to the drainage surface 191.

[0084] The drainage surface 191 and the second side surface can also be provided with an inverted bevel to form a third bevel surface, so that the drainage surface 191 and the second side surface are not connected at a right angle, and the third bevel surface can also serve as a drainage surface, which helps the paint to flow smoothly along the third bevel surface to the trough 111.

[0085] In some embodiments, the coating machine 100 can further include two connecting members 250, which can correspond to the mounting seats 210 one by one. The connecting members 250 can be connected between the drainage member 190 and the mounting seat 210 as an intermediate structure, and the connecting member 250 and the drainage member 190 can be fixedly connected or detachably connected. The drainage member 190 can be connected to the mounting seat 210 through the connecting seat, so as to facilitate the installation of the drainage member 190.

[0086] As an example, the first rotating part 195, the limiting part 197, and the first fixing hole in each of the above embodiments can be provided on the connecting member 250, and the adjusting member 230 can rotate the connecting member 250 to drive the drainage member 190 to rotate.

[0087] In some embodiments, the coating machine 100 can further include two material blocking plates 270, which can be provided on the side of the drainage member 190 facing the doctor blade 170 and spaced apart along the distribution direction of the two mounting seats 210. The material blocking plate 270 is used to block the paint on the drainage member 190 from flowing to one side of the mounting seat 210, so as to limit the flow direction of the paint on the drainage surface 191, and help to avoid the paint on the drainage surface 191 from falling into the trough 111 from the side close to the mounting seat 210.

[0088] As an example, the two material blocking plates 270 can be provided on the drainage surface 191, and the two material blocking plates 270 can be located on the sides of the two ends of the first roller body, so that the paint scraped off the roller surface by the doctor blade 170 can fall between the two material blocking plates 270, so as to better guide the paint to the trough 111.

[0089] In some embodiments, the distance between the two material blocking plates 270 can gradually approach from the side close to the plate roller 130 to the side away from the plate roller 130, so that the space between the two material blocking plates 270 is generally a tapered space, so as to better guide the paint on the drainage surface 191 to the trough 111.

[0090] In some embodiments, the outer surface of the drainage member 190 can be covered with a corrosion-resistant layer, so as to improve the corrosion of the drainage member 190 by the paint, prolong the service life of the drainage member 190, and also reduce the mixing of the material of the drainage member 190 after corrosion into the paint, which affects the effect of the paint.

[0091] The corrosion-resistant layer can be a Teflon layer or other corrosion-resistant layer.

[0092] As an example, the flow guide 190 can be made of metal or alloy material to ensure sufficient structural strength and avoid being bent by the coating, and can be wrapped with a corrosion-resistant layer on the outside to improve the corrosion resistance of the surface.

[0093] In some embodiments, the material blocking plate 270 and the flow guide 190 can be integrally formed, and the outer surface of the material blocking plate 270 can also be coated with a corrosion-resistant layer.

[0094] In some embodiments, the mounting seat 210, the connecting piece 250, and the adjusting piece 230 can be made of plastic material, such as nylon or other plastic, to ensure sufficient structural strength and reduce corrosion by the coating.

[0095] The coating machine 100 provided by the embodiments of the present application can improve the situation that the coating directly falls into the trough 111 from the surface of the roller of the doctor blade 170 to form bubbles, ensure the coating effect, and also improve the splashing situation caused by the coating directly falling into the trough 111 from the surface of the roller of the doctor blade 170, which helps to reduce the corrosion of other structural parts of the coating machine 100 caused by the splashing of the coating, prolongs the service life of the coating machine 100.

[0096] The embodiments of the present application are described in detail above in combination with the drawings, but the present application is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A coater characterized by comprising: The coating machine comprises: a tray provided with a trough for accommodating paint; a plate roller rotatably partially located in the trough for partially immersing in the paint in the trough and for making the paint in the trough adhere to the roller surface of the plate roller during rotation; a pressure roller rotatably provided above the plate roller and forming a coating area for coating between the plate roller; a doctor blade located above the tray and in contact with the roller surface on one side of the plate roller for scraping part of the paint on the roller surface of the plate roller; and a flow guide provided below the doctor blade and extending downward from the side of the plate roller towards the trough; the flow guide is used for guiding the paint scraped by the doctor blade from the roller surface of the plate roller into the trough.

2. The coater according to claim 1, characterized in that, The flow guide has a flow guide surface on the side facing the doctor blade, which extends downward from the side of the plate roller towards the trough for guiding the paint scraped by the doctor blade from the roller surface of the plate roller into the trough.

3. The coater according to claim 1, characterized by The coating machine comprises two mounting seats oppositely connected to the tray; the flow guide is adjustably connected between the two mounting seats.

4. The coater according to claim 3, characterized in that The coating machine further comprises an adjusting member connected to the mounting seats and in transmission connection with the flow guide, the adjusting member and the flow guide being located on opposite sides of the mounting seats; the adjusting member has a locking state and an unlocking state, in the locking state, the adjusting member fixes the flow guide to the mounting seats; in the unlocking state, the adjusting member can drive the flow guide to rotate.

5. The coater according to claim 3, characterized by The coating machine further comprises two material blocking plates, the two material blocking plates are protrudingly provided on the side of the flow guide facing the doctor blade and are spaced apart along the distribution direction of the two mounting seats; the material blocking plates are used for blocking the paint on the flow guide from flowing to one side of the mounting seats.

6. The coater according to claim 5, characterized in that The distance between the two material blocking plates gradually approaches from the side close to the plate roller to the side away from the plate roller.

7. The coater according to claim 1, characterized by The flow guide has a material blocking portion, which is spaced apart from the plate roller, and is used for blocking part of the paint on the roller surface of the plate roller.

8. The coater according to claim 7, characterized in that The rotation axis of the plate roller is parallel to the horizontal plane; the material blocking portion is located below the rotation axis, and the doctor blade is located above the rotation axis.

9. The coater according to any one of claims 1 to 8, characterized in that, The outer surface of the flow guide is covered with a corrosion-resistant layer.

10. The coater according to any one of claims 1 to 8, characterized in that The flow guide is spaced apart from the liquid surface of the paint in the trough.

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