Uniform coating device based on coated thermo-sensitive paper lubricating layer slurry and use method of uniform coating device

Abstract

The invention relates to the technical field of coating devices, in particular to a uniform coating device based on film-coated thermo-sensitive paper lubricating layer slurry and a using method thereof.The uniform coating device comprises a control console, an unwinding machine and a chute blade coater, the upper end of the control console is fixedly connected with the unwinding machine, the upper end of the control console is fixedly connected with the chute blade coater, and the upper end of the control console is fixedly connected with a heat treatment assembly; the heat treatment assembly comprises a vertical frame, one side of the vertical frame is fixedly connected with a ventilation plate, an inter-plate through hole is formed in the inner side of the ventilation plate, and the ventilation plate is fixedly connected with an infrared sensor in a penetrating mode; according to the lubricating layer slurry drying device, the two faces of coated lubricating layer slurry can be dried at the same time, so that a coating is heated evenly and fully, and the phenomenon that the coating is dried falsely is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of coating devices, in particular to a uniform coating device based on lubricating layer slurry of coated thermal paper and a use method thereof. Background Art

[0002] The uniform coating device for lubricating layer slurry of coated thermal paper is a device specially designed to evenly coat the lubricating layer on the coated thermal paper during the production process. It uses a high-precision control system and advanced coating mechanism to make the produced coated thermal paper have better printing quality and service life.

[0003] In order to ensure the bonding quality of the lubricating layer and the thermal paper and the performance of the final product, the device for uniformly coating the lubricating layer slurry of the coated thermal paper will dry the product by passing it through an oven.

[0004] The product is dried in an oven, which will result in the coating not being dried evenly and fully, resulting in false drying of the coating, insufficient adhesion between the coating and the substrate, and easy peeling during subsequent use, making it impossible to effectively lubricate the thermal paper. Therefore, in order to solve the above problems, a uniform coating device based on the lubricating layer slurry of coated thermal paper and a method for using the same are proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a uniform coating device based on the lubricating layer slurry of coated thermal paper and a method of using the same, so as to solve the problem that the product is dried in an oven, which may lead to insufficient drying of the coating and false drying of the coating, resulting in insufficient adhesion between the coating and the substrate, easy peeling in subsequent use, and inability to effectively provide lubrication for the thermal paper.

[0006] To achieve the above object, the present invention provides the following technical solutions: A uniform coating device based on lubricating layer slurry of coated thermal paper and a method of using the same, comprising a control console, an unwinder and an inclined slot coating machine, wherein the upper end of the control console is fixedly connected to the unwinder, the upper end of the control console is fixedly connected to the inclined slot coating machine, the upper end of the control console is fixedly connected to a heat treatment component, the upper end of the control console is fixedly connected to a laminating and pressing machine, one side of the laminating and pressing machine is fixedly connected to a roller coating component, one side of the control console is fixedly connected to an air expansion winding frame, the heat treatment component comprises a stand, one side of the stand is fixedly connected to a ventilation plate, the inner side of the ventilation plate is provided with inter-plate through holes, the ventilation plate is penetrated and fixedly connected with an infrared sensor, the inner side of the stand is provided with a circuit board, the lower end of the circuit board is fixedly connected to a drying component, the drying component comprises a hollow plate, one side of the hollow plate is fixedly connected to a hollow frame, the inner side of the hollow frame is provided with fan blades, the inner side of the fan blades is fixedly connected to a first motor, the outer side of the first motor is fixedly connected to a motor frame, the inner side of the motor frame is fixedly connected to a first conductive rod, The asbestos board is fixedly connected to one side of the motor frame, a spring ring is fixedly connected to the outer side of the asbestos board, a second conductive rod is fixedly connected to one side of the asbestos board, the rolling coating assembly comprises a supporting block, a slurry discharge assembly is fixedly connected to one side of the supporting block, the slurry discharge assembly comprises a scraper, a material injection column is fixedly connected to the upper end of the scraper, a slurry discharge hole is opened on the inner side of the scraper, a strip sliding groove is opened on the inner side of the scraper, a sliding block is slidably connected to the inner side of the strip sliding groove, an air-drying assembly is fixedly connected to the inner side of the support block, and the air-drying assembly comprises a fixed short rod, one end of the fixed short rod is fixedly connected to a first grooved column block, a threaded rubber block is rotatably connected to the outer side of the first grooved column block, one side of the threaded rubber block is fixedly connected to a hollow rolling frame, a short air hole is opened on the outer side of the hollow rolling frame, a second motor is fixedly connected to the inner side of the first grooved column block, a locking nose is spirally connected to one end of the second motor, a wind wheel is fixedly connected to one side of the locking nose, and one end of the wind wheel is rotatably connected to the second grooved column block.

[0007] As further optimized content of the present invention, the projection of the stand in the vertical direction is a rectangle, the outer side of the ventilation plate is in contact with the inner side of the stand, the right end face of the ventilation plate and the right end face of the stand are on the same horizontal plane, a plurality of through holes are provided between the plates, each of the through holes between the plates are parallel to each other, and two infrared sensors are provided, and the two infrared sensors are parallel to each other.

[0008] As further optimized content of the present invention, the projection of the circuit board in the vertical direction is a rectangle, the lower end face of the circuit board is in contact with the upper end face of the drying component, a first conductive rod is fixedly connected to the inner side of the circuit board, a second conductive rod is fixedly connected to the inner side of the circuit board, and a plurality of drying components are arranged, and the drying components are evenly and equidistantly distributed on the inner side of the stand.

[0009] As further optimized content of the present invention, the outer side of the hollow plate is fitted with the inner side of the hollow frame, the fan blades are parallel to the hollow plate, the central axis of the fan blades and the central axis of the first motor are on the same straight line, the angle between the first motor and the motor frame is 90°, the fan blades and the motor frame are parallel to each other, and the bottom end of the motor frame is fixedly connected with a hollow frame.

[0010] As a further optimization of the present invention, the right side of the asbestos board is parallel to the left side of the ventilation board, the central axis of the asbestos board and the central axis of the spring coil are on the same straight line, two spring coils are provided, the two spring coils are parallel to each other, the asbestos board and the fan blades are parallel to each other, and the asbestos board and the fan blades have the same axis.

[0011] As further optimized content of the present invention, the right side surface of the support block is bonded with the left side surface of the laminating and pressing laminating machine, two support blocks are provided, and the two support blocks are symmetrically distributed front and back on both sides of the slurry discharge component, the upper end surface of the slurry discharge component and the upper end surface of the support block are on the same horizontal plane, the slurry discharge component and the air-drying component are parallel to each other, and the angle between the air-drying component and the support block is 90°.

[0012] As further optimized content of the present invention, the projection of the scraper in the vertical direction is a rectangle, two injection columns are provided, the two injection columns are parallel to each other, the angle between the injection column and the scraper is 90°, a plurality of slurry outlet holes are provided, and the slurry outlet holes are evenly and equidistantly distributed on the inner side of the scraper, and two sliding blocks are provided, and the two sliding blocks are symmetrically distributed front and back on the inner side of the strip sliding groove.

[0013] As a further optimization of the present invention, there are two fixed short rods, which are symmetrically distributed front and back at both ends of the hollow rolling frame, the outer side of the first grooved column block is fitted with the threaded rubber block, the central axis of the first grooved column block and the central axis of the threaded rubber block are on the same straight line, and there are two threaded rubber blocks, which are symmetrically distributed front and back at both ends of the hollow rolling frame.

[0014] As a further optimization content of the present invention, the central axis of the hollow rolling frame and the central axis of the wind wheel are on the same straight line, the angle formed between the wind wheel and the threaded rubber block is 90°, the central axis of the wind wheel and the central axis of the threaded rubber block are on the same straight line, the central axis of the wind wheel and the central axis of the second grooved column block are on the same straight line, and the second grooved column block and the first grooved column block have the same axis.

[0015] As further optimized content of the present invention, S1: the unwinder and the chute coating machine apply the heat-sensitive coating to the base paper: the base paper is transported from the unwinder to the chute coating machine, the chute coating machine evenly applies the heat-sensitive coating to the unwinder, and the coated base paper is coated by a laminating machine; S2: The rolling assembly evenly applies the lubricating slurry to the coating layer and blows it dry: the lubricating slurry is injected into the scraper from the injection column, and the position of the strip sliding groove is adjusted according to the required coating width, so that the lubricating slurry flows out from a certain number of slurry outlet holes and is applied to the coating layer. When the coating layer contacts the threaded rubber block and the hollow rolling frame at the lower end of the scraper, the friction force generated by the movement of the coating layer drives the threaded rubber block and the hollow rolling frame to rotate. When the spiral patterns with different rotation directions on the surfaces of the two threaded rubber blocks rotate, the surface tension of the coating layer becomes larger. The second motor is started, driving the lock nose and the wind wheel to rotate, so that air flows out from the short air holes to blow dry the lubricating slurry applied on the coating layer; S3: The heat treatment component performs secondary drying on the other side of the coating layer: After the circuit board receives the signal transmitted by the infrared sensor, the first conductive rod and the second conductive rod are used to control the operation of the motor frame and the asbestos board respectively. At this time, the first motor starts to drive the fan blades to rotate, and the asbestos board controls the heating of the spring coil. The air flows in from the drying component and flows out from the through holes between the boards after being heated. The hot air will heat the coating layer, and the lubricating slurry is further dried through the coating layer to ensure that the coating is fully dried and avoid false drying. S4: The laminating and pressing machine and the air-expanding winding frame press and reel the base paper coated with heat-sensitive coating and the coating layer: the base paper treated by the unwinder and the inclined trough coating machine and the coating layer treated by the heat-treated component and the roller coating component are sent to the laminating and pressing machine for lamination at the same time, and the air-expanding winding frame will reel the laminated products.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, by setting up a drying component and an air-drying component, both sides of the coated lubricating layer slurry can be dried simultaneously, so that the coating is heated evenly and fully, and false drying of the coating is avoided, thereby improving the adhesion between the coating and the substrate and effectively providing lubrication for the thermal paper.

[0017] 2. In the present invention, by setting up a roller coating component, the lubricating slurry can be applied before lamination, and the lamination can be performed after the coating is completed, thereby avoiding the occurrence of wrinkles between the subsequent application of the lubricating slurry and the thermal paper, which affects the product quality.

[0018] 3. In the present invention, the threaded rubber block is provided to increase the surface tension of the coating layer when the lubricating slurry is applied, which helps to evenly distribute and adhere the lubricating slurry on the coating layer, thereby ensuring the uniformity and quality of the coating layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the heat treatment component of the present invention; Figure 3 It is a schematic diagram of the cross-sectional structure of the heat treatment component of the present invention; Figure 4 This is a schematic diagram of the explosion structure of the drying component of the present invention; Figure 5 This is a schematic structural diagram of a roller coating assembly of the present invention; Figure 6 This is a schematic diagram of the structure of the pulp discharging assembly of the present invention; Figure 7 This is a schematic diagram of the structure of the air-drying component of the present invention; Figure 8 It is a schematic diagram of the explosion structure of the air-drying component of the present invention.

[0020] In the figure: 1. Control console; 2. Unwinding machine; 3. Inclined trough coating machine; 4. heat treatment assembly; 41. stand; 42. ventilation plate; 43. through hole between plates; 44. infrared sensor; 45. circuit board; 46. drying assembly; 461. hollow plate; 462. hollow frame; 463. fan blade; 464. first motor; 465. motor frame; 466. first conductive rod; 467. asbestos board; 468. spring coil; 469. second conductive rod; 5. Laminating machine; 6. Roller coating assembly; 61. Support block; 62. Slurry discharging assembly; 621. Scraper; 622. Injection column; 623. Slurry discharging hole; 624. Strip sliding groove; 625. Sliding block; 63. Air drying assembly; 631. Fixed short rod; 632. First slotted column block; 633. Threaded rubber block; 634. Hollow rolling frame; 635. Short air hole; 636. Second motor; 637. Lock nose; 638. Wind wheel; 639. Second slotted column block; 7. Air-inflated take-up stand. DETAILED DESCRIPTION

[0021] See also Figure 1-8 , the present invention provides a technical solution: The uniform coating device based on the lubricating layer slurry of the coated thermal paper and the use method thereof include a control console 1, an unwinding machine 2 and an inclined slot scraper 3, the upper end of the control console 1 is fixedly connected to the unwinding machine 2, the upper end of the control console 1 is fixedly connected to the inclined slot scraper 3, the upper end of the control console 1 is fixedly connected to a heat treatment component 4, the upper end of the control console 1 is fixedly connected to a laminating machine 5, one side of the laminating machine 5 is fixedly connected to a roller coating component 6, one side of the control console 1 is fixedly connected to an air expansion winding frame 7, the heat treatment component 4 includes a stand 41, one side of the stand 41 is fixedly connected to a ventilation plate 42, and the inner side of the ventilation plate 42 is opened There are through holes 43 between the plates, the ventilation plate 42 is penetrated and fixedly connected with an infrared sensor 44, a circuit board 45 is provided on the inner side of the stand 41, a drying component 46 is fixedly connected to the lower end of the circuit board 45, and the drying component 46 includes a hollow plate 461, a hollow frame 462 is fixedly connected to one side of the hollow plate 461, a fan blade 463 is provided on the inner side of the hollow frame 462, a first motor 464 is fixedly connected to the inner side of the fan blade 463, a motor frame 465 is fixedly connected to the outer side of the first motor 464, a first conductive rod 466 is fixedly connected to the inner side of the motor frame 465, and an asbestos board 466 is fixedly connected to one side of the motor frame 465. 67, a spring ring 468 is fixedly connected to the outer side of the asbestos board 467, a second conductive rod 469 is fixedly connected to one side of the asbestos board 467, the roller coating assembly 6 includes a support block 61, a slurry discharge assembly 62 is fixedly connected to one side of the support block 61, the slurry discharge assembly 62 includes a scraper 621, a material injection column 622 is fixedly connected to the upper end of the scraper 621, a slurry discharge hole 623 is opened on the inner side of the scraper 621, a strip sliding groove 624 is opened on the inner side of the scraper 621, a sliding block 625 is slidably connected to the inner side of the strip sliding groove 624, an air drying assembly 63 is fixedly connected to the inner side of the support block 61, and the air drying assembly 63 includes a fixed short rod 631, one end of the fixed short rod 631 is fixedly connected to a first grooved column block 632, the outer side of the first grooved column block 632 is rotatably connected to a threaded rubber block 633, one side of the threaded rubber block 633 is fixedly connected to a hollow rolling frame 634, and a short air hole 635 is provided on the outer side of the hollow rolling frame 634, the inner side of the first grooved column block 632 is fixedly connected to a second motor 636, one end of the second motor 636 is spirally connected to a locking nose 637, one side of the locking nose 637 is fixedly connected to a wind wheel 638, and one end of the wind wheel 638 is rotatably connected to a second grooved column block 639.

[0022] As a technical solution for further implementation of this scheme, the projection of the stand 41 in the vertical direction is a rectangle, the outer side of the ventilation plate 42 is in contact with the inner side of the stand 41, the right end face of the ventilation plate 42 is on the same horizontal plane as the right end face of the stand 41, a plurality of through holes 43 are provided between the plates, each of the through holes 43 between the plates is parallel to each other, two infrared sensors 44 are provided, and the two infrared sensors 44 are parallel to each other. Such a design can make the device structure more reasonable and improve the working efficiency; As a technical solution for further implementation of this scheme, the projection of the circuit board 45 in the vertical direction is a rectangle, the lower end surface of the circuit board 45 is in contact with the upper end surface of the drying component 46, the inner side of the circuit board 45 is fixedly connected with a first conductive rod 466, the inner side of the circuit board 45 is fixedly connected with a second conductive rod 469, and a plurality of drying components 46 are provided, and the drying components 46 are evenly and equidistantly distributed on the inner side of the stand 41. Such a design can achieve effective control of the device structure and improve the operating efficiency of the device; As a technical solution for further implementation of this solution, the outer side of the hollow plate 461 is fitted with the inner side of the hollow frame 462, the fan blade 463 and the hollow plate 461 are parallel to each other, the central axis of the fan blade 463 and the central axis of the first motor 464 are on the same straight line, the angle between the first motor 464 and the motor frame 465 is 90°, the fan blade 463 and the motor frame 465 are parallel to each other, and the bottom end of the motor frame 465 is fixedly connected with the hollow frame 462. Such a design can improve the fit between the device components, facilitate the coordination between the device components, and improve the operating efficiency; As a technical solution for further implementation of this solution, the right side of the asbestos board 467 is parallel to the left side of the ventilation plate 42, the central axis of the asbestos board 467 and the central axis of the spring coil 468 are on the same straight line, two spring coils 468 are provided, the two spring coils 468 are parallel to each other, the asbestos board 467 and the fan blade 463 are parallel to each other, and the asbestos board 467 and the fan blade 463 have the same axis. Such a design can achieve effective control of the device structure and improve the accuracy of the device operation; As a technical solution further implemented in this scheme, the right side surface of the support block 61 is bonded to the left side surface of the laminating and pressing laminating machine 5, and two support blocks 61 are provided, and the two support blocks 61 are symmetrically distributed on both sides of the slurry discharge component 62 in front and back, and the upper end surface of the slurry discharge component 62 and the upper end surface of the support block 61 are on the same horizontal plane, and the slurry discharge component 62 and the air-drying component 63 are parallel to each other, and the angle between the air-drying component 63 and the support block 61 is 90°. Such a design can strengthen the mutual support between the components and improve the stability of the device; As a technical solution for further implementation of this solution, the projection of the scraper 621 in the vertical direction is a rectangle, two injection columns 622 are provided, the two injection columns 622 are parallel to each other, the angle between the injection columns 622 and the scraper 621 is 90°, a plurality of slurry outlet holes 623 are provided, and the slurry outlet holes 623 are evenly and equidistantly distributed on the inner side of the scraper 621, and two sliding blocks 625 are provided, and the two sliding blocks 625 are symmetrically distributed on the inner side of the strip sliding groove 624 in front and back. Such a design can improve the fit between the device components and facilitate the coordination between the device components; As a technical solution for further implementation of this solution, two fixed short rods 631 are provided, and the two fixed short rods 631 are symmetrically distributed at both ends of the hollow rolling frame 634. The outer side of the first grooved column block 632 is fitted with the threaded rubber block 633. The central axis of the first grooved column block 632 and the central axis of the threaded rubber block 633 are on the same straight line. Two threaded rubber blocks 633 are provided, and the two threaded rubber blocks 633 are symmetrically distributed at both ends of the hollow rolling frame 634. Such a design can make the device structure more reasonable and improve the stability of the device. As a technical solution for further implementation of this solution, the central axis of the hollow rolling frame 634 and the central axis of the wind wheel 638 are on the same straight line, the angle between the wind wheel 638 and the threaded rubber block 633 is 90°, the central axis of the wind wheel 638 and the central axis of the threaded rubber block 633 are on the same straight line, the central axis of the wind wheel 638 and the central axis of the second grooved column block 639 are on the same straight line, and the second grooved column block 639 and the first grooved column block 632 have the same axis. Such a design can achieve effective control of the device structure and improve the accuracy of device operation; S1: The unwinder 2 and the chute coating machine 3 apply a heat-sensitive coating to the base paper: the base paper is transported from the unwinder 2 to the chute coating machine 3, and the chute coating machine 3 evenly applies a heat-sensitive coating to the unwinder 2, and the coated base paper is laminated by the laminating machine 5; S2: The rolling assembly 6 evenly applies the lubricating slurry to the coating layer and blows it dry: the lubricating slurry is injected into the scraper 621 from the injection column 622, and the position of the strip sliding groove 624 is adjusted according to the required coating width, so that the lubricating slurry flows out from a certain number of slurry outlet holes 623 and is applied to the coating layer. When the coating layer contacts the threaded rubber block 633 and the hollow rolling frame 634 at the lower end of the scraper 621, the friction force generated by the movement of the coating layer drives the threaded rubber block 633 and the hollow rolling frame 634 to rotate. When the spiral patterns with different rotation directions on the surfaces of the two threaded rubber blocks 633 rotate, the surface tension of the coating layer becomes larger, and the second motor 636 is started to drive the lock nose 637 and the wind wheel 638 to rotate, so that air flows out from the short air holes 635 to blow the lubricating slurry applied on the coating layer dry; S3: The heat treatment component 4 performs secondary drying on the other side of the coating layer: After the circuit board 45 receives the signal transmitted by the infrared sensor 44, the first conductive rod 466 and the second conductive rod 469 respectively control the motor frame 465 and the asbestos board 467 to operate. At this time, the first motor 464 starts to drive the fan blade 463 to rotate, and the asbestos board 467 controls the spring coil 468 to heat up. The air flows in from the drying component 46 and flows out from the inter-board through hole 43 after being heated. The hot air will heat the coating layer, and the lubricating slurry is further dried through the coating layer to ensure that the coating is fully dried and avoid false drying. S4: The laminating and pressing laminating machine 5 and the air-inflating winding frame 7 press and wind up the base paper and the coating layer coated with the heat-sensitive coating: the base paper treated by the unwinding machine 2 and the inclined trough coating machine 3 and the coating layer treated by the heat treatment component 4 and the roller coating component 6 are simultaneously sent to the laminating and pressing laminating machine 5 for lamination, and the air-inflating winding frame 7 will wind up the laminated products.

[0023] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. The above is only a preferred implementation of the present invention. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the protection scope of the present invention.

Claims

1. A uniform coating device for lubricating layer slurry of coated thermal paper, comprising a control console (1), an unwinding machine (2) and a chute coating machine (3), characterized in that: The upper end of the control console (1) is fixedly connected to an unwinding machine (2), the upper end of the control console (1) is fixedly connected to an inclined trough coating machine (3), the upper end of the control console (1) is fixedly connected to a heat treatment component (4), the upper end of the control console (1) is fixedly connected to a laminating machine (5), one side of the laminating machine (5) is fixedly connected to a roller coating component (6), and one side of the control console (1) is fixedly connected to an air inflation winding frame (7); The heat treatment component (4) comprises a stand (41), a ventilation plate (42) is fixedly connected to one side of the stand (41), an inter-plate through hole (43) is provided on the inner side of the ventilation plate (42), an infrared sensor (44) is fixedly connected through the ventilation plate (42), a circuit board (45) is provided on the inner side of the stand (41), a drying component (46) is fixedly connected to the lower end of the circuit board (45), the drying component (46) comprises a hollow plate (461), and a hollow frame (462) is fixedly connected to one side of the hollow plate (461), A fan blade (463) is provided on the inner side of the hollow frame (462); a first motor (464) is fixedly connected to the inner side of the fan blade (463); a motor frame (465) is fixedly connected to the outer side of the first motor (464); a first conductive rod (466) is fixedly connected to the inner side of the motor frame (465); an asbestos board (467) is fixedly connected to one side of the motor frame (465); a spring coil (468) is fixedly connected to the outer side of the asbestos board (467); and a second conductive rod (469) is fixedly connected to one side of the asbestos board (467); The roller coating assembly (6) comprises a support block (61), one side of the support block (61) is fixedly connected to a slurry discharge assembly (62), the slurry discharge assembly (62) comprises a scraper (621), the upper end of the scraper (621) is fixedly connected to a material injection column (622), a slurry discharge hole (623) is provided on the inner side of the scraper (621), a strip-shaped sliding groove (624) is provided on the inner side of the scraper (621), a sliding block (625) is slidably connected to the inner side of the strip-shaped sliding groove (624), an air-drying assembly (63) is fixedly connected to the inner side of the support block (61), the air-drying assembly (63) comprises a fixed short rod (631), the fixed short rod (631) 31) is fixedly connected to a first grooved column block (632) at one end, a threaded rubber block (633) is rotatably connected to the outer side of the first grooved column block (632), a hollow rolling frame (634) is fixedly connected to one side of the threaded rubber block (633), a short air hole (635) is provided on the outer side of the hollow rolling frame (634), a second motor (636) is fixedly connected to the inner side of the first grooved column block (632), a locking nose (637) is spirally connected to one end of the second motor (636), a wind wheel (638) is fixedly connected to one side of the locking nose (637), and a second grooved column block (639) is rotatably connected to one end of the wind wheel (638).

2. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1 is characterized in that: The projection of the stand (41) in the vertical direction is a rectangle, the outer side of the ventilation plate (42) is in contact with the inner side of the stand (41), the right end surface of the ventilation plate (42) and the right end surface of the stand (41) are on the same horizontal plane, a plurality of inter-plate through holes (43) are provided, and each of the inter-plate through holes (43) is parallel to each other, and two infrared sensors (44) are provided, and the two infrared sensors (44) are parallel to each other.

3. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The projection of the circuit board (45) in the vertical direction is a rectangle. The lower end surface of the circuit board (45) is in contact with the upper end surface of the drying component (46). A first conductive rod (466) is fixedly connected to the inner side of the circuit board (45). A second conductive rod (469) is fixedly connected to the inner side of the circuit board (45). A plurality of drying components (46) are provided. The drying components (46) are evenly and equidistantly distributed on the inner side of the stand (41).

4. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The outer side of the hollow plate (461) is fitted with the inner side of the hollow frame (462); the fan blade (463) and the hollow plate (461) are parallel to each other; the central axis of the fan blade (463) and the central axis of the first motor (464) are on the same straight line; the angle formed between the first motor (464) and the motor frame (465) is 90°; the fan blade (463) and the motor frame (465) are parallel to each other; and the bottom end of the motor frame (465) is fixedly connected to the hollow frame (462).

5. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The right side surface of the asbestos board (467) and the left side surface of the ventilation plate (42) are parallel to each other. The central axis of the asbestos board (467) and the central axis of the spring coil (468) are on the same straight line. Two spring coils (468) are provided. The two spring coils (468) are parallel to each other. The asbestos board (467) and the fan blade (463) are parallel to each other. The asbestos board (467) and the fan blade (463) have the same axis.

6. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The right side surface of the support block (61) is bonded to the left side surface of the laminating and pressing laminating machine (5); two support blocks (61) are provided, and the two support blocks (61) are symmetrically distributed on both sides of the slurry discharge component (62) in a front-to-back manner; the upper end surface of the slurry discharge component (62) and the upper end surface of the support block (61) are on the same horizontal plane; the slurry discharge component (62) and the air-drying component (63) are parallel to each other; and the angle formed between the air-drying component (63) and the support block (61) is 90°.

7. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The projection of the scraper (621) in the vertical direction is a rectangle. Two injection columns (622) are provided. The two injection columns (622) are parallel to each other. The angle between the injection columns (622) and the scraper (621) is 90°. A plurality of slurry outlet holes (623) are provided. The slurry outlet holes (623) are evenly and equidistantly distributed on the inner side of the scraper (621). Two sliding blocks (625) are provided. The two sliding blocks (625) are symmetrically distributed on the inner side of the strip sliding groove (624) in a front-to-back manner.

8. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: Two fixed short rods (631) are provided, and the two fixed short rods (631) are symmetrically distributed at the two ends of the hollow rolling frame (634) in a front-to-back manner. The outer side of the first grooved column block (632) is fitted with the threaded rubber block (633). The central axis of the first grooved column block (632) and the central axis of the threaded rubber block (633) are on the same straight line. Two threaded rubber blocks (633) are provided, and the two threaded rubber blocks (633) are symmetrically distributed at the two ends of the hollow rolling frame (634) in a front-to-back manner.

9. The uniform coating device based on lubricating layer slurry of coated thermal paper according to claim 1, characterized in that: The central axis of the hollow rolling frame (634) and the central axis of the wind wheel (638) are on the same straight line, and the angle formed between the wind wheel (638) and the threaded rubber block (633) is 90 degrees. The central axis of the wind wheel (638) and the central axis of the threaded rubber block (633) are on the same straight line, and the central axis of the wind wheel (638) and the central axis of the second grooved column block (639) are on the same straight line, and the second grooved column block (639) and the first grooved column block (632) have the same axis.

10. A method for using a uniform coating device for lubricating layer slurry of coated thermal paper according to any one of claims 1 to 9, characterized in that: S1: The unwinder (2) and the inclined trough coating machine (3) apply a heat-sensitive coating to the base paper: the base paper is transported from the unwinder (2) to the inclined trough coating machine (3), the inclined trough coating machine (3) evenly applies the heat-sensitive coating to the unwinder (2), and the coated base paper is laminated by a laminating machine (5); S2: The rolling component (6) uniformly applies the lubricating slurry to the coating layer and blows it dry: the lubricating slurry is injected from the injection column (622) into the scraper (621), and the position of the strip sliding groove (624) is adjusted according to the required coating width, so that the lubricating slurry flows out from a certain number of slurry outlet holes (623) and is applied to the coating layer. When the coating layer contacts the threaded rubber block (633) and the hollow rolling frame (634) at the lower end of the scraper (621), the friction force generated by the movement of the coating layer drives the threaded rubber block (633) and the hollow rolling frame (634) to rotate. When the spiral patterns with different rotation directions on the surfaces of the two threaded rubber blocks (633) rotate, the surface tension of the coating layer increases. The second motor (636) is started to drive the lock nose (637) and the wind wheel (638) to rotate, so that air flows out from the short air holes (635) to blow dry the lubricating slurry applied on the coating layer. S3: The heat treatment component (4) performs secondary drying on the other side of the coating layer: after the circuit board (45) receives the signal transmitted by the infrared sensor (44), the first conductive rod (466) and the second conductive rod (469) respectively control the motor frame (465) and the asbestos board (467) to operate. At this time, the first motor (464) starts to drive the fan blade (463) to rotate, and the asbestos board (467) controls the spring coil (468) to heat. Air flows in from the drying component (46) and flows out from the inter-board through hole (43) after being heated. The hot air heats the coating layer and further dries the lubricating slurry through the coating layer to ensure that the coating is fully dried and avoid false drying. S4: The laminating and pressing machine (5) and the air-expansion winding frame (7) press and reel the base paper coated with the heat-sensitive coating and the coating layer: the base paper treated by the unwinder (2) and the inclined trough coating machine (3) and the coating layer treated by the heat treatment component (4) and the roller coating component (6) are simultaneously fed into the laminating and pressing machine (5) for lamination, and the air-expansion winding frame (7) reels the laminated products.

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