Coating device

Abstract

The invention discloses a coating device which comprises a rack, a coating roller assembly, a compression roller assembly and a liquid outlet assembly, the coating roller assembly, the compression roller assembly and the liquid outlet assembly are arranged on the rack, the coating roller assembly is coated with coating liquid of the liquid outlet assembly, and the compression roller assembly is used for applying pressure to the coating roller assembly. The coating roller assembly and the liquid outlet assembly are each provided with a temperature control device used for preventing viscous condensation of coating liquid, the liquid outlet assembly comprises a liquid bin, a discharging die, a gear pump and a discharging guide part, a discharging channel is formed in the discharging die, an inlet of the discharging channel is communicated with the liquid bin, the gear pump and the material storage cavity are arranged on the discharging channel in the discharging direction, and the gear pump and the material storage cavity are communicated with the discharging guide part. The discharging guide piece is connected to an outlet of the discharging channel of the discharging die and used for guiding the coating liquid, and the coating liquid in the liquid bin flows through the discharging channel and the discharging guide piece to reach the coating roller assembly. According to the hot-melt coating device, liquid medicine is extruded through the gear pump, the discharging speed is uniform, and the technical problem that the extrusion speed is not uniform due to the fact that medicine corresponding to hot-melt coating is large in viscosity and poor in fluidity is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of coating equipment, and in particular to a coating device. Background Art

[0002] In the production of hot-melt patches, coating is an important link. Conventional equipment generally includes a frame, a liquid discharge device, a coating roller, and a pressure roller. The coating roller is wrapped with material. The liquid medicine comes out of the liquid discharge device and reaches the material on the coating roller. The pressure roller applies pressure to position the material on the coating roller.

[0003] A conventional coating machine currently exists, comprising a feed bin, a guide plate, and a scraper roller assembly. The guide plate is tilted, with one end located at the feed bin outlet and the other end positioned near the coating roller. The adhesive in the feed bin flows out onto the guide plate and then flows toward the scraper roller assembly, where the scraper rollers on the scraper roller assembly scrape the adhesive off the guide plate. The applicant discovered that, in this technical solution, the scraper rollers do not scrape the adhesive uniformly. The feed bin and scraper rollers are heated to ensure the adhesive is heated, but the guide plate is not. Furthermore, the guide plate is relatively long, and the adhesive on the guide plate may solidify or semi-solidify during flow, resulting in poor adhesive flow. Therefore, a coating device with uniform and controllable discharge is needed. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a coating device with uniform discharge.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: A coating device comprises a frame and a coating roller assembly, a pressure roller assembly, and a liquid discharge assembly arranged on the frame, wherein the coating liquid of the liquid discharge assembly is coated on the coating roller assembly, the pressure roller assembly is used to apply pressure to the coating roller assembly, the coating roller assembly and the liquid discharge assembly are respectively provided with a temperature control device for preventing the viscosity of the coating liquid from condensing, the liquid discharge assembly comprises a liquid material bin, a discharge die, a gear pump and a discharge guide, a discharge channel is provided in the discharge die, the inlet of the discharge channel is connected to the liquid material bin, the gear pump and the storage cavity are arranged on the discharge channel along the discharge direction, the discharge guide is connected to the outlet of the discharge channel of the discharge die and is used to guide the coating liquid, and the coating liquid in the liquid material bin flows through the discharge channel and the discharge guide to reach the coating roller assembly.

[0006] The discharge guide is provided with a guide channel, the inlet of the guide channel is connected to the outlet of the discharge channel, and the inlet size of the guide channel is larger than the outlet size of the guide channel.

[0007] The discharge guide comprises an upper plate and a lower plate, and a gap is provided between the upper plate and the lower plate, and the gap serves as a guide channel.

[0008] The coating device further includes a first drive assembly and a limit assembly, wherein the first drive assembly is connected below the liquid outlet assembly and is slidably connected to the frame, and the first drive assembly is used to drive the liquid outlet assembly to move closer to or away from the coating roller assembly, and the limit assembly is arranged on the frame and located below the liquid outlet assembly; The first driving assembly is provided with a first wedge block on the side close to the coating roller assembly, and the limiting assembly includes a second wedge block, the wedge surface of the second wedge block cooperates with the wedge surface of the first wedge block and the second wedge block can move up and down relative to the frame.

[0009] The first drive assembly includes a first mounting seat, a first drive member and a first slide rail. The upper and lower parts of the first slide rail are respectively connected to the first mounting seat and the frame. The first drive member is connected to the frame and is used to drive the first mounting seat to move closer to or away from the coating roller assembly. The first wedge block is arranged on the first mounting seat.

[0010] The limiting assembly includes a second mounting seat and a first lead screw and a second driving member arranged on the second mounting seat. The second mounting seat is connected to the frame. The first lead screw is arranged in a vertical direction. The second driving member is used to drive the first lead screw to move. The second wedge block is arranged on the first lead screw.

[0011] The first drive assembly also includes a third drive member and a third gear. The third drive member is used to drive the third gear to move. The liquid outlet assembly also includes a first gear. The first gear is coaxially arranged with a gear in the gear pump, and the first gear is meshed with the third gear for transmission.

[0012] The discharge die comprises an upper die and a lower die, the upper die and the lower die are oppositely provided with grooves, and the gear pump is located in the grooves.

[0013] The first driving assembly further includes a displacement sensor, which is disposed on the frame and is used to detect the horizontal displacement of the first mounting seat.

[0014] The coating roller assembly includes a fourth driving member, a coating roller and a rotary joint. The fourth driving member is used to drive the coating roller to rotate. Roller shafts are provided at both ends of the coating roller. The rotary joint is connected to the roller shaft. A medium flow channel is provided in the coating roller, and the medium flow channel is connected to the rotary joint.

[0015] Compared with the prior art, the advantages of the present invention are: The coating device of the present invention arranges the gear pump in the discharge channel of the discharge die. After the medicine is injected into the liquid bin, it directly enters the discharge channel of the discharge die by gravity, enters the storage cavity through the gear pump, and finally squeezes out the medicine liquid through the discharge guide. Compared with the existing conventional means, the present invention extrude the medicine liquid through the gear pump, and the discharge speed is uniform, which solves the technical problem of uneven extrusion speed caused by the large viscosity and poor fluidity of the medicine corresponding to hot-melt coating and the excessively long guide plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the coating device of the present invention.

[0017] Figure 2 It is a left side view of the coating device of the present invention.

[0018] Figure 3 It is a front view of the coating device of the present invention.

[0019] Figure 4 It is a top view of the coating device of the present invention.

[0020] Figure 5 It is a front view of the first drive assembly of the present invention.

[0021] Figure 6 It is a left side view of the first drive assembly of the present invention.

[0022] Figure 7 It is a right side view of the first drive assembly of the present invention.

[0023] Figure 8 It is a top view of the first drive assembly of the present invention.

[0024] Figure 9 It is a side view of the limiting assembly of the present invention.

[0025] Figure 10 It is a front view of the limiting assembly of the present invention.

[0026] Figure 11 It is a front view of the liquid outlet component of the present invention.

[0027] Figure 12 yes Figure 11 Sectional view along line AA.

[0028] Figure 13 It is a schematic structural diagram of the coating roller assembly of the present invention.

[0029] Figure 14 It is a schematic diagram of the medium flow in the coating roller of the present invention.

[0030] Figure 15 It is a structural schematic diagram of the pressure roller assembly of the present invention.

[0031] The reference signs in the drawings represent: 1, frame; 2, coating roller assembly; 21, rotary joint; 22, bearing seat; 23, coating roller; 231, roller shaft; 24, synchronous pulley; 25, fourth driving member; 3, compression roller assembly; 31, bearing cover; 32, swing arm; 33, compression roller; 34, rotating shaft; 35, compression roller bearing; 36, rotating arm; 37, fifth driving member; 4, liquid outlet assembly; 41, first gear; 42, liquid material bin; 43, die positioning member; 44, turnover member; 45, discharge die; 451, upper die; 452, lower die; 453, groove; 454, storage cavity; 46, gear pump; 47, discharge guide member; 471, upper plate; 472, lower plate; 5, first driving assembly; 51, displacement sensor; 52, first wedge-shaped block; 53, first driving member; 54, first mounting seat; 55, first sliding rail; 56, fourth gear; 57, third driving member; 58, third gear; 59, fifth gear; 6, limiting assembly; 61, second mounting seat; 62, second wedge-shaped block; 63, first lead screw; 64, second driving member. DETAILED DESCRIPTION

[0032] The application will be further described below. Unless otherwise specified, the instruments or materials used in the application are commercially available.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0035] In the present application, unless otherwise specifically specified and limited, the terms "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] As Figures 1 to 15 shown, the coating device of the embodiment, comprising a rack 1 and a coating roller assembly 2, a pressure roller assembly 3, a liquid outlet assembly 4 arranged on the rack 1, the coating liquid of the liquid outlet assembly 4 is coated on the coating roller assembly 2, the pressure roller assembly 3 is used for applying pressure to the coating roller assembly 2, and the coating roller assembly 2 and the liquid outlet assembly 4 are respectively provided with temperature control devices for preventing viscous condensation of the coating liquid, the liquid outlet assembly 4 comprises a liquid tank 42, a discharge die 45, a gear pump 46 and a discharge guide 47, the discharge die 45 is provided with a discharge channel, the inlet of the discharge channel is communicated with the liquid tank 42, the gear pump 46 and the storage cavity 454 are arranged on the discharge channel in the discharge direction, and the discharge guide 47 is connected at the outlet of the discharge channel of the discharge die 45 and is used for guiding the coating liquid, and the coating liquid in the liquid tank 42 flows through the discharge channel and the discharge guide 47 to the coating roller assembly 2.

[0037] The coating device of the present application sets the gear pump 46 in the discharge channel of the discharge die 45, the medicine injection liquid tank 42 directly enters the discharge channel of the discharge die 45 through gravity, enters the storage cavity 454 through the gear pump 46, and the liquid medicine is extruded through the discharge guide 47, compared with the conventional means, the gear pump 46 of the present application extrudes the liquid medicine, the extrusion speed is uniform, and the technical problem of uneven extrusion speed caused by the long guide plate due to the large viscosity and poor flowability of the corresponding medicine of the hot melt type coating is solved.

[0038] According to the different production processes, the liquid tank 42 can adopt a jacket structure design, which can realize the heating function of the liquid tank 42, so that the medicine always maintains a certain flowability; at the same time, the discharge die 45 is also designed with a flow channel to realize the temperature control requirement of the discharge die 45.

[0039] As Figure 12 shown, the discharge guide 47 is provided with a guide channel, the inlet of the guide channel is communicated with the outlet of the discharge channel, and the size of the inlet of the guide channel is greater than that of the outlet of the guide channel, so that the glue liquid gradually thins during the discharging process, and the discharging is more uniform.

[0040] The discharge guide 47 comprises an upper plate 471 and a lower plate 472, and the gap between the upper plate 471 and the lower plate 472 is the guide channel.

[0041] In this embodiment, the gap size on the side close to the discharge channel is larger than the gap size on the side of the original discharge channel. In the direction of liquid medicine flow, the upper surface of the upper plate 471 is tilted upward, and the lower surface of the lower plate 472 is horizontal. In this way, the liquid medicine is pushed out of the mold by the gear pump 46. In other embodiments, in the direction of liquid medicine flow, the upper surface of the upper plate 471 is tilted upward, and the lower plate 472 is tilted downward, or in the direction of liquid medicine flow, the upper plate 471 is horizontal and the lower plate 472 is tilted downward, which can also achieve the same or similar technical effects.

[0042] like Figures 5 to 10 As shown, the coating device also includes a first drive assembly 5 and a limit assembly 6. The first drive assembly 5 is connected to the bottom of the liquid discharge assembly 4 and is slidably connected to the frame 1. The first drive assembly 5 is used to drive the liquid discharge assembly 4 to move closer to or away from the coating roller assembly 2. The limit assembly 6 is arranged on the frame 1 and is located below the liquid discharge assembly 4. The first drive assembly 5 is provided with a first wedge block 52 on the side close to the coating roller assembly 2. The limit assembly 6 includes a second wedge block 62. The wedge surface of the second wedge block 62 cooperates with the wedge surface of the first wedge block 52, and the second wedge block 62 is movable up and down relative to the frame 1. In this embodiment, the coordination of the wedge surface and the wedge surface reduces the distance adjustment stroke of the liquid discharge assembly 4 close to or away from the coating roller assembly 2, avoiding the technical problem of using a cylinder to drive the screw rod to directly drive the coating steel roller to move for distance adjustment. Due to the large stroke of the screw rod, each adjustment distance is large, which cannot meet the small distance change during glue coating.

[0043] The first drive assembly 5 includes a first mounting seat 54, a first driving member 53, and a first slide rail 55. The upper and lower portions of the first slide rail 55 are connected to the first mounting seat 54 and the frame 1, respectively. The first driving member 53 is connected to the frame 1 and is used to drive the first mounting seat 54 toward or away from the coating roller assembly 2. The first wedge block 52 is disposed on the first mounting seat 54. The provision of the first slide rail 55 reduces friction during movement of the first mounting seat 54, resulting in smoother sliding.

[0044] like Figure 9 and 10 As shown, the limiting assembly 6 includes a second mounting base 61 and a first lead screw 63 and a second driving member 64 arranged on the second mounting base 61. The second mounting base 61 is connected to the frame 1, the first lead screw 63 is arranged in the vertical direction, the second driving member 64 is used to drive the first lead screw 63 to move, and the second wedge block 62 is arranged on the first lead screw 63.

[0045] like Figures 5 to 8As shown, the first drive assembly 5 further includes a third drive member 57 and a third gear 58. The third drive member 57 is used to drive the third gear 58 to move. The liquid outlet assembly 4 further includes a first gear 41. The first gear 41 is coaxially arranged with a gear in the gear pump 46. The first gear 41 is meshed with the third gear 58 for transmission. The third drive member 57 drives the third gear 58 to move, which in turn drives the first gear 41 to move. The gear of the gear pump 46 coaxially arranged with the first gear 41 also rotates, thereby promoting the movement of the glue liquid.

[0046] In this embodiment, the first drive assembly 5 also includes a fourth gear 56 and a fifth gear 59. The fourth gear 56 is directly connected to the output end of the third drive member 57. The fifth gear 59 is engaged with the fourth gear 56. The fifth gear 59 is coaxial with the third gear 58 and the fifth gear 59 is located in the first mounting seat 54. The third gear 58 is located outside the first mounting seat 54. The third drive member 57 and the fourth gear 56 are connected below the first mounting seat 54. With such a multi-gear transmission setting, on the one hand, the spatial layout of the device is more compact and the space utilization rate is higher. On the other hand, it is convenient to observe the rotation of the gear pump 46 and adjust the speed of the glue output.

[0047] like Figure 12 As shown, in this embodiment, the gear pump 46 is two gears meshing with each other, and the two gears are arranged above and below on the discharge channel.

[0048] In this embodiment, the discharge die 45 includes an upper die 451 and a lower die 452. The discharge channel is located between the upper die 451 and the lower die 452. The upper die 451 and the lower die 452 are oppositely provided with grooves 453. The grooves 453 are located on the discharge channel. The gear pump 46 is located in the grooves 453. The grooves 453 are located upstream of the storage chamber 454. Compared with the integral design of the discharge die 45, the separate design of the upper die 451 and the lower die 452 makes it easier to install the gear pump 46 and also makes it easier to disassemble and clean the interior of the discharge die 45. At the same time, the gear pump 46 in the groove 453 pushes the glue liquid into the storage chamber 454 for storage and buffering. When the glue liquid in the storage chamber 454 reaches a certain capacity, the glue liquid begins to move toward the outlet of the discharge channel.

[0049] In this embodiment, the third gears 58 are symmetrically arranged, and the gear pump 46 is driven synchronously by the third gears 58 on both sides. The liquid discharge assembly 4 is mounted on the first drive assembly 5. The first drive assembly 5 positions the entire discharge die 45 and the coating roller 23. During production, the third drive member 57 drives the fourth gear 56, which transmits power to the third gears 58 on both sides via the transitional fifth gear 59. The third gears 58 in turn transmit power to the first gear 41, driving the gear pump 46, ensuring a continuous flow of drug to the outlet.

[0050] like Figure 1As shown, the liquid discharge assembly 4 also includes a flip member 44. The upper mold 451 and the lower mold 452 are connected by a hinge, and the flip member 44 is connected to the hinge. The provision of the flip member 44 facilitates the disassembly of the upper mold 451 and the lower mold 452, and facilitates the cleaning of the discharge mold 45. After production is completed, for cleaning, the upper liquid tank 42 is removed, and the connecting screws on the hinge between the upper mold 451 and the lower mold 452 are removed. The flip member 44 can then be used to easily rotate and lift the upper mold 451 and separate it from the lower mold 452, eliminating the need for complete disassembly, thereby reducing the cleaning time and difficulty of disassembly.

[0051] The liquid discharge assembly 4 further includes a die head positioning member 43 , which is symmetrically arranged on both sides of the discharge die 45 .

[0052] In this embodiment, the first driving assembly 5 further includes a displacement sensor 51 . The displacement sensor 51 is disposed on the frame 1 and is used to detect the horizontal displacement of the first mounting seat 54 .

[0053] like Figure 13 and 14 As shown, the coating roller assembly 2 includes a fourth driving member 25, a coating roller 23, and a rotary joint 21. The fourth driving member 25 is used to drive the coating roller 23 to rotate. Roller shafts 231 are provided at both ends of the coating roller 23. The rotary joint 21 is connected to the roller shafts 231. A medium flow channel is provided in the coating roller 23, and the medium flow channel is connected to the rotary joint 21. A cold source or a heat source can be introduced through the rotary joint 21 and the medium flow channel to facilitate temperature control of the coating roller 23.

[0054] In this embodiment, the coating roller assembly 2 also includes a bearing seat 22 and a synchronous pulley 24. The roller shaft 231 is installed on the frame 1 through the bearing seat 22. One end of the synchronous pulley 24 is connected to the output end of the fourth driving member 25, and the other end is sleeved on the roller shaft 231.

[0055] The coating roller 23 adopts a jacketed double-layer structure design. According to different production processes, the entry and exit of heat sources or cold sources can be increased to achieve control of the temperature of the coating roller 23.

[0056] like Figure 15 As shown, the pressure roller assembly 3 includes a fifth driving member 37, a pressure roller 33, and a rotating shaft 34. The pressure roller 33, the rotating shaft 34, and the coating roller 23 are arranged in parallel. The pressure roller 33 is connected to the rotating shaft 34. The rotating shaft 34 is connected to the frame 1 and can rotate relative to the frame 1. The fifth driving member 37 is used to drive the rotating shaft 34 to rotate and drive the pressure roller 33 to move closer to or away from the coating roller 23.

[0057] The pressure roller assembly 3 further includes a swing arm 32 , one end of the swing arm 32 is connected to the output end of the fifth driving member 37 , and the other end is connected to the rotating shaft 34 .

[0058] The compression roller assembly 3 further comprises a compression roller bearing 35, and the rotating shaft 34 is connected to the frame 1 through the compression roller bearing 35. In the embodiment, a bearing cover 31 is sleeved on the rotating shaft 34 away from the fifth driving member 37 to isolate dust from the outside.

[0059] The compression roller assembly 3 further comprises a rotating arm 36, one end of the rotating arm 36 is hinged to the output end of the fifth driving member 37, and the other end is connected to the rotating shaft 34, so that the rotating shaft 34 is driven to rotate.

[0060] Each driving member is a driving motor or a driving cylinder.

[0061] The liquid outlet assembly 4 is first installed on the first driving assembly 5, and the first driving assembly 5 adjusts the gap between the liquid outlet assembly 4 and the coating roller assembly 2 according to different product parameters to meet the production process requirements. During the entire adjustment process, the first driving member 53 (a moving cylinder) is started to push the first mounting seat 54 close to the coating roller 23, and when the first wedge block 52 contacts the second wedge block 62, the first driving member 53 will always maintain pressure on the entire second wedge block 62; at this time, the second driving member 64 (a motor) is started to drive the first lead screw 63 to rotate, and the first lead screw 63 drives the second wedge block 62 to move up and down, because the first wedge block 52 always maintains close contact with the second wedge block 62. Therefore, the resistance of the first driving member 53 will be overcome to slightly adjust the first mounting seat 54 forward and backward until the displacement sensor 51 displays the correct value, and the gap adjustment of the system is completed.

[0062] The limiting assembly 6 is arranged with two sets of corresponding displacement sensors 51, and two sets of displacement sensors 51 are also installed, and the entire system can realize single-sided adjustment and double-sided simultaneous adjustment, and can well guarantee the gap between the liquid outlet assembly 4 and the coating roller assembly 2.

[0063] Although the present application has been disclosed with the above preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make many possible changes and modifications to the technical solutions of the present application, or modify equivalent embodiments with equivalent changes, without departing from the scope of the technical solutions of the present application, by using the technical contents disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application, without departing from the content of the technical solutions of the present application, shall fall within the scope of protection of the technical solutions of the present application.

Claims

1. A coating device, comprising a frame (1) and a coating roller assembly (2), a pressure roller assembly (3), and a liquid outlet assembly (4) arranged on the frame (1), wherein the coating liquid of the liquid outlet assembly (4) is coated on the coating roller assembly (2), and the pressure roller assembly (3) is used to apply pressure to the coating roller assembly (2), characterized in that: The coating roller assembly (2) and the liquid discharge assembly (4) are respectively provided with a temperature control device for preventing the viscosity of the coating liquid from condensing. The liquid discharge assembly (4) includes a liquid material bin (42), a discharge die (45), a gear pump (46) and a discharge guide (47). A discharge channel is provided in the discharge die (45), and the inlet of the discharge channel is connected to the liquid material bin (42). The gear pump (46) and the storage chamber (454) are arranged on the discharge channel along the discharge direction. The discharge guide (47) is connected to the outlet of the discharge channel of the discharge die (45) and is used to guide the coating liquid. The coating liquid in the liquid material bin (42) flows through the discharge channel and the discharge guide (47) to reach the coating roller assembly (2).

2. The coating device according to claim 1, characterized in that: The discharge guide (47) is provided with a guide channel, the inlet of the guide channel is connected to the outlet of the discharge channel, and the size of the inlet of the guide channel is larger than the size of the outlet of the guide channel.

3. The coating device according to claim 2, characterized in that: The discharge guide (47) comprises an upper plate (471) and a lower plate (472), and a gap is provided between the upper plate (471) and the lower plate (472), and the gap serves as a guide channel.

4. The coating device according to claim 1, characterized in that: The coating device further comprises a first driving assembly (5) and a limiting assembly (6), wherein the first driving assembly (5) is connected below the liquid outlet assembly (4) and is slidably connected to the frame (1), and the first driving assembly (5) is used to drive the liquid outlet assembly (4) to move closer to or away from the coating roller assembly (2), and the limiting assembly (6) is arranged on the frame (1) and located below the liquid outlet assembly (4); The first driving assembly (5) is provided with a first wedge-shaped block (52) on a side close to the coating roller assembly (2), and the limiting assembly (6) includes a second wedge-shaped block (62), the wedge-shaped surface of the second wedge-shaped block (62) matches the wedge-shaped surface of the first wedge-shaped block (52), and the second wedge-shaped block (62) can move up and down relative to the frame (1).

5. The coating device according to claim 4, characterized in that: The first driving assembly (5) comprises a first mounting seat (54), a first driving member (53) and a first slide rail (55); the upper and lower portions of the first slide rail (55) are respectively connected to the first mounting seat (54) and the frame (1); the first driving member (53) is connected to the frame (1) and is used to drive the first mounting seat (54) to move closer to or away from the coating roller assembly (2); and the first wedge block (52) is arranged on the first mounting seat (54).

6. The coating device according to claim 5, characterized in that: The limiting assembly (6) includes a second mounting seat (61), a first lead screw (63) and a second driving member (64) arranged on the second mounting seat (61); the second mounting seat (61) is connected to the frame (1); the first lead screw (63) is arranged in a vertical direction; the second driving member (64) is used to drive the first lead screw (63) to move; and the second wedge block (62) is arranged on the first lead screw (63).

7. The coating device according to claim 5, characterized in that: The first drive assembly (5) further includes a third drive member (57) and a third gear (58), wherein the third drive member (57) is used to drive the third gear (58) to move. The liquid outlet assembly (4) further includes a first gear (41), wherein the first gear (41) is coaxially arranged with a gear in the gear pump (46), and the first gear (41) is meshed with the third gear (58) for transmission.

8. The coating device according to claim 7, characterized in that: The discharge die (45) comprises an upper die (451) and a lower die (452), wherein the upper die (451) and the lower die (452) are provided with grooves (453) opposite to each other, and the gear pump (46) is located in the grooves (453).

9. The coating device according to claim 7, characterized in that: The first driving assembly (5) further comprises a displacement sensor (51), wherein the displacement sensor (51) is arranged on the frame (1) and is used to detect the horizontal displacement of the first mounting seat (54).

10. The coating device according to any one of claims 1 to 9, characterized in that: The coating roller assembly (2) comprises a fourth driving member (25), a coating roller (23) and a rotary joint (21); the fourth driving member (25) is used to drive the coating roller (23) to rotate; roller shafts (231) are provided at both ends of the coating roller (23); the rotary joint (21) is connected to the roller shaft (231); a medium flow channel is provided in the coating roller (23); and the medium flow channel is communicated with the rotary joint (21).

Images