Sealed anilox roller blade coating device applied to composite coating machine

Abstract

The invention discloses a sealed anilox roller blade coating device applied to a composite coating machine, and relates to the technical field of coating, the sealed anilox roller blade coating device comprises a coating machine working frame, a placing shaft is rotatably mounted on the inner wall of the coating machine working frame, and a rolling shaft is rotatably mounted at one end, away from the placing shaft, of the coating machine working frame; a mounting box is fixedly mounted on the inner wall, close to the transmission cylinder, of the coating machine working frame, an anilox roller is rotationally mounted in the inner wall of the mounting box, and a feeding mechanism for controlling the transmission pressure according to the concentration of a glue solution is arranged at the side end, away from the anilox roller, of the mounting box; the inner wall, close to the anilox roller, of the mounting box is internally provided with an adjusting mechanism for controlling the scraping force of the scraper and the distance between the anilox roller and the coating roller through the viscosity of the glue solution, and the situation that the high-viscosity glue solution is poor in fluidity and accumulates in the contact area of the scraper and the anilox roller is avoided by increasing the force of removing the glue solution scraped by the scraper and sucking the glue solution; and hard blocks are formed and periodically fall off, so that longitudinal stripes or pits appear on the surface of the material.

Description

Technical Field

[0001] This invention relates to the field of coating technology, specifically to a sealed anilox roller doctor blade coating device for composite coating machines. Background Technology

[0002] Coating technology is a process that uses viscous substances to coat the surface of substrates such as paper and film, primarily used to improve material properties or impart new functions. It is broadly classified into dry and wet coating methods and is widely used in advertising consumables, packaging materials, packaging, pharmaceuticals, electronics, and new energy fields. Core equipment includes three types: smooth rollers, anilox rollers, and hot melt adhesive spraying / extrusion. Smooth rollers achieve high-precision coating through gap adjustment; anilox rollers provide uniform coating but the amount is difficult to control; hot melt adhesive technology has environmental advantages due to its solvent-free nature. This technology uses various scraping methods, such as stainless steel doctor blades and comma doctor blades, to control coating uniformity. Parameters such as doctor blade pressure and angle directly affect coating quality. Development trends focus on high-solids-content doctor blade coating, metered sizing and pressing technology, and novel spray and curtain coating technologies.

[0003] A search revealed that Chinese invention patent CN115320221B discloses an anti-volatile and anti-precipitation coating device for a coating laminating machine. The device includes a base, on which a traction roller group and a take-up roller group are mounted. The traction roller group includes an anilox roller rotatably mounted on the base and a backing roller movably mounted on the base. The anilox roller abuts against the backing roller, and the backing roller is connected to two sets of pneumatic lifting mechanisms mounted on the base. The take-up roller group includes a take-up roller and a drive roller movably mounted on the base. The take-up roller abuts against the drive roller, and both the take-up roller and the drive roller are respectively connected to a threaded lifting mechanism and an elastic pressing mechanism mounted on the base. The rotating shaft of the drive roller is connected to the rotating shaft of the anilox roller via the threaded lifting mechanism. Due to the good sealing of the feeding component, the skinning phenomenon of fast-drying ink can be effectively avoided, and the formation of doctor blade lines can be prevented.

[0004] Existing coating machines use a transfer blade coating head to control coating thickness through the gap between the blade and the coating roller. However, when dealing with high-viscosity, high-volume coating conditions, the high-viscosity material has poor flowability and tends to accumulate in the contact area between the blade and the coating roller, forming hard lumps that periodically fall off, resulting in longitudinal stripes or pits on the coating surface. Therefore, based on the above research and in light of the existing problems, we provide a sealed anilox roller blade coating device for composite coating machines. Summary of the Invention

[0005] The purpose of this invention is to provide a sealed anilox roller doctor blade coating device for a composite coating machine, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A sealed anilox roller doctor blade coating device for a composite coating machine includes a coating machine work frame. A placement shaft is rotatably mounted on the inner wall of the work frame. A take-up shaft is rotatably mounted on the end of the work frame away from the placement shaft. A drive housing is fixedly mounted on the side of the work frame near the take-up shaft, and the take-up shaft is fixedly connected to the output end of the drive housing. A transmission cylinder for spreading material is rotatably disposed on the inner wall of the work frame. An installation box is fixedly mounted on the inner wall of the work frame near the transmission cylinder. An anilox roller is rotatably mounted on the inner wall of the installation box. An installation box is fixedly mounted on the inner wall near the anilox roller. The device includes a sealed housing with a scraper slidably mounted on its inner wall to remove excess adhesive from the surface of the anilox roller. A coating roller for applying adhesive is rotatably mounted on the inner wall of the mounting housing near the anilox roller, with mounting rods fixedly mounted at both ends. A mounting ring is slidably mounted on the inner wall of the mounting housing near the mounting rods, and the mounting ring rotatably fits onto the outer wall of the mounting rods. A feeding mechanism that controls the transmission pressure based on the adhesive concentration is located on the side of the mounting housing away from the anilox roller. An adjustment mechanism that controls the scraping force of the scraper and the distance between the anilox roller and the coating roller based on the adhesive viscosity is located on the inner wall of the mounting housing near the anilox roller.

[0008] Furthermore, the feeding mechanism includes a storage tank for storing adhesive liquid. The side end of the mounting box near the storage tank has a sliding groove that fits into the storage tank, and the storage tank is slidably disposed in the sliding groove. A discharge pipe is fixedly installed on the side end of the storage tank near the mounting box. A one-way hopper is fixedly installed on the inner wall of the discharge pipe. A docking valve is fixedly installed on the inner wall of the mounting box near the one-way hopper. A discharge pump is fixedly installed on the end of the docking valve away from the one-way hopper.

[0009] Furthermore, a material transfer pipe is fixedly installed at the output end of the discharge pump. A temperature control mechanism for detecting and controlling the temperature of the adhesive in the material transfer pipe is sleeved on the outer wall of the material transfer pipe. A flow meter is fixedly installed at the upper end of the discharge pump. A material passage box is fixedly installed at the upper end of the flow meter, and the discharge end of the material passage box is connected to the inlet end of the sealed box. A viscosity measuring frame is slidably installed on the upper end of the flow meter near the inner wall of the material passage box. A lifting block is fixedly installed on the upper end of the viscosity measuring frame.

[0010] Furthermore, a resistance rod is fixedly installed at the upper end of the feed box near the lifting block. A brush ring is slidably sleeved on the outer wall of the resistance rod, and the brush ring is fixedly installed at the side end of the lifting block. A power block is fixedly installed at the upper end of the resistance rod, and a control line is fixedly installed at the side end of the power block. The other end of the control line is fixedly installed at the control end of the discharge pump.

[0011] Furthermore, the regulating mechanism includes a control pump, which is fixedly installed at the upper end of the sealed box. A current line is fixedly installed at the control end of the control pump, and the other end of the current line is fixedly installed at the end of the energized block away from the control line. A return gas-liquid separator is fixedly installed at the discharge end of the control pump. A suction pipe is fixedly installed at the suction end of the control pump. A transfer pipe is fixedly installed at both ends of the suction pipe. A sealing ring is provided at the end of the transfer pipe away from the suction pipe, and the sealing rings are fixedly installed at both ends of the sealed box.

[0012] Furthermore, a suction telescopic tube is fixedly installed on the upper end of each sealing ring near the scraper, a return pipe is fixedly installed on the upper end of each suction telescopic tube, a suction rod is fixedly installed between the return pipes, and an installation telescopic rod is fixedly installed between the suction rod and the installation box.

[0013] Furthermore, pull ropes are symmetrically installed at both ends of the lifting block. A winding ring is wound around the end of the pull rope away from the lifting block, and a rotating rod is slidably installed on the inner wall of the winding ring. A threaded rod is fixedly installed at the end of the rotating rod away from the winding ring, and the end of the threaded rod away from the rotating rod is rotatably installed on the side end of the mounting ring. A threaded ring is fixedly installed on the inner wall of the mounting box near the threaded rod, and the threaded rod passes through the threaded hole opened in the threaded ring.

[0014] Furthermore, the temperature control mechanism includes a temperature control cylinder, which is fixedly sleeved on the outer wall of the material transfer tube. A cooling ring is provided at the upper end of the inner wall of the temperature control cylinder, and a heating ring is provided at the lower end of the inner wall of the temperature control cylinder. Both the cooling ring and the heating ring are sleeved on the outer wall of the material transfer tube. A connecting block is fixedly installed between the cooling ring and the heating ring. A cooling rod is fixedly installed on the inner wall of the connecting block near the cooling rod. A heating rod is fixedly installed on the inner wall of the connecting block near the cooling rod. The heating rod is fixedly installed at the control end of the heating ring. An insulating rod is provided between the cooling rod and the heating rod. A pneumatic telescopic rod is fixedly installed on the inner wall of the connecting block near the heating rod. A brush block is fixedly installed at the output end of the pneumatic telescopic rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. This invention increases the force of the scraper to remove the adhesive and absorb the adhesive, thus avoiding the poor flowability of high-viscosity adhesive, which accumulates in the contact area between the scraper and the anilox roller, forming hard lumps that periodically fall off, resulting in longitudinal stripes or pits on the material surface.

[0017] 2. This invention increases the distance of the lifting block by pushing it upward through the viscosity measuring frame, which in turn increases the distance between the brush ring and the energized block. This increases the current transmitted to the discharge pump through the control line, thereby increasing the output efficiency of the discharge pump. Thus, the forced feeding mechanism overcomes the problem of poor flowability of high-viscosity materials and can stabilize the coating viscosity.

[0018] 3. This invention precisely controls the coating thickness through the coating roller and the doctor blade, combined with the precision scraping of the doctor blade and the precise control of the feeding mechanism, to achieve a coating amount tolerance within ±2%, which is significantly better than traditional transfer doctor blade coating.

[0019] 4. This invention seals the entire coating mechanism with a sealed box to prevent high-viscosity materials from leaking out and air from mixing in, thereby reducing material waste. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the mounting box in this invention;

[0022] Figure 3 This is a schematic diagram of the discharge pipe in this invention;

[0023] Figure 4 This is a schematic diagram of the structure of the sealing box in this invention;

[0024] Figure 5 This is a schematic diagram of the structure of the adhesive measuring frame in this invention;

[0025] Figure 6 This is a schematic diagram of the suction rod in this invention;

[0026] Figure 7 This is a schematic diagram of the material suction telescopic tube in this invention;

[0027] Figure 8 This is a schematic diagram of the transmission belt and threaded rod in this invention;

[0028] Figure 9 This is a schematic diagram of the temperature control cylinder in this invention;

[0029] Figure 10 This is a schematic diagram of the pneumatic telescopic rod in this invention.

[0030] In the diagram: 1. Coating machine work frame; 101. Placement shaft; 102. Rewinding shaft; 103. Drive housing; 104. Transmission cylinder; 105. Mounting box; 106. Anilox roller; 107. Coating roller; 108. Doctor blade; 109. Sealing box; 110. Drive motor; 111. Mounting rod; 112. Transmission belt; 113. Transmission rod; 114. Tension frame; 115. Mounting ring;

[0031] 2. Feeding mechanism; 201. Storage bin; 202. Discharge pipe; 203. One-way hopper; 204. Connecting valve; 205. Discharge pump; 206. Transfer pipe; 207. Flow measuring pipe; 208. Feed box; 209. Control line; 210. Adhesion measuring frame; 211. Lifting block; 212. Brush ring; 213. Resistance rod; 214. Power block;

[0032] 3. Adjustment mechanism; 301. Control pump; 302. Suction pipe; 303. Transfer pipe; 304. Sealing ring; 305. Return gas-liquid separator; 306. Current line; 307. Installation telescopic rod; 308. Suction rod; 309. Return pipe; 310. Suction telescopic pipe;

[0033] 311. Pulling rope; 312. Winding ring; 313. Rotating rod; 314. Threaded rod; 315. Threaded ring;

[0034] 4. Temperature control mechanism; 401. Temperature control cylinder; 402. Cooling coil; 403. Connecting block; 404. Heating coil; 405. Temperature measuring cylinder; 406. Gas transmission tube; 407. Pneumatic telescopic rod; 408. Brush block; 409. Cooling rod; 410. Heating rod; 411. Insulating rod. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Please see Figures 1-10A sealed anilox roller doctor blade coating device for a composite coating machine includes a coating machine work frame 1. A placement shaft 101 is rotatably mounted on the inner wall of the coating machine work frame 1. A take-up shaft 102 is rotatably mounted on the end of the coating machine work frame 1 away from the placement shaft 101. A drive housing 103 is fixedly mounted on the side end of the coating machine work frame 1 near the take-up shaft 102, and the take-up shaft 102 is fixedly connected to the output end of the drive housing 103. A transmission cylinder 104 for spreading material is rotatably arranged on the inner wall of the coating machine work frame 1. An installation box 105 is fixedly mounted on the inner wall of the coating machine work frame 1 near the transmission cylinder 104. An anilox roller 106 is rotatably mounted in the inner wall of the installation box 105. A sealing box 1 is fixedly mounted on the inner wall of the installation box 105 near the anilox roller 106. 09. The sealing box 109 seals the entire coating mechanism to prevent side leakage of high-viscosity materials and air mixing, reducing material waste. A scraper 108 is slidably mounted on the inner wall of the sealing box 109 to scrape off excess adhesive from the surface of the anilox roller 106. The lower end of the scraper 108, which contacts the anilox roller 106, is barbed, and a material-collecting groove is provided at the upper end of the scraper 108. A coating roller 107, which applies adhesive to the coating, is rotatably mounted on the inner wall of the mounting box 105 near the anilox roller 106. Mounting rods 111 are fixedly mounted at both ends of the coating roller 107. A mounting ring 115 is slidably mounted on the inner wall of the mounting box 105 near the mounting rods 111, and the mounting ring 115 is rotatably sleeved on the outer wall of the mounting rods 111. One end of the mounting rods 111 is fixedly connected to… A drive motor 110 is provided, and a mounting rod 111 is fixedly installed at the output end of the drive motor 110. A transmission belt 112 is wound and installed on the outer wall of the mounting rod 111. Transmission rods 113 are fixedly installed at both ends of the anilox roller 106, and the end of the transmission belt 112 away from the mounting rod 111 is wound around the outer wall of the transmission rod 113. When the drive motor 110 starts working, the mounting rod 111 drives the tension frame 114 to start rotating through the transmission belt 112, causing the anilox roller 106 and the coating roller 107 to rotate in the same direction. A tension frame 114 is provided on the inner wall of the mounting box 105 near the transmission belt 112 to pull the transmission belt 112 taut. The tension frame 114 ensures that the transmission belt 112 remains taut when the coating roller 107 moves, thus maintaining the tension. To ensure the transmission of kinetic energy, a feeding mechanism 2 is provided on the side of the mounting box 105 away from the anilox roller 106, which controls the transmission pressure according to the adhesive concentration. An adjustment mechanism 3 is provided on the inner wall of the mounting box 105 near the anilox roller 106, which controls the scraping force of the doctor blade 108 and the distance between the anilox roller 106 and the coating roller 107 based on the adhesive viscosity. Specifically, when material needs to be coated, the coating material is placed on the placement shaft 101, and the material is passed through the mounting box 105 and the anilox roller 106, so that the other end of the material is wound around the outer wall of the take-up shaft 102. The drive unit 103 is started, causing it to move and begin coating the material. When the material begins to be coated, the adhesive is transferred to the sealed box 109 for coating via the feeding mechanism 2.When the adhesive concentration is high, the feeding mechanism 2 increases the transmission power, thereby overcoming the problem of poor flowability of high-viscosity materials through a forced feeding mechanism. This stabilizes the coating viscosity. When scraping off high-viscosity adhesive, the adjusting mechanism 3 controls the force of the scraper 108 pressing the anilox roller 106 based on the adhesive coating viscosity, while simultaneously increasing the force of the scraper 108 in removing and absorbing the adhesive. This prevents the high-viscosity adhesive from accumulating in the contact area between the scraper 108 and the anilox roller 106 due to its poor flowability, forming hard lumps that periodically detach, resulting in longitudinal stripes or pits on the material surface.

[0037] The feeding mechanism 2 includes a storage tank 201 for storing adhesive liquid. A sliding groove is provided on the side of the mounting box 105 near the storage tank 201, fitting snugly into the storage tank 201. The storage tank 201 is slidably disposed in the sliding groove. A discharge pipe 202 is fixedly installed on the side of the storage tank 201 near the mounting box 105. A one-way hopper 203 is fixedly installed on the inner wall of the discharge pipe 202. The one-way hopper 203 is shaped like a hopper and made of a soft material. A docking valve 204 is fixedly installed on the inner wall of the mounting box 105 near the one-way hopper 203. The docking valve 204 is existing technology and will not be described in detail here. The length of 4 is two-thirds of the length of the one-way hopper 203. After the docking valve 204 is inserted into the one-way hopper 203, the one-way hopper 203 is opened by the docking valve 204. The adhesive in the storage box 201 can be transferred to the docking valve 204 after the one-way hopper 203 is connected to the docking valve 204. The discharge pump 205 is fixedly installed at the end of the docking valve 204 away from the one-way hopper 203. When the adhesive is used up and needs to be replaced, the storage box 201 is slid out. When the storage box 201 is removed, the one-way hopper 203 flips and closes, thereby sealing the one-way hopper 203 and playing a one-way flow role, making it more convenient to remove and replace the adhesive.

[0038] A material transfer pipe 206 is fixedly installed at the output end of the discharge pump 205. A temperature control mechanism 4 for detecting and controlling the temperature of the adhesive solution in the material transfer pipe 206 is sleeved on the outer wall of the material transfer pipe 206. A flow measuring pipe 207 is fixedly installed at the upper end of the discharge pump 205. A material passage box 208 is fixedly installed at the upper end of the flow measuring pipe 207, and the discharge end of the material passage box 208 is connected to the inlet end of the sealed box 109. The upper end of the flow measuring pipe 207 is close to the inner wall of the material passage box 208. A sliding adhesive testing frame 210 is installed. Both the adhesive testing frame 210 and the feed box 208 are made of smooth material to prevent the adhesive from sticking to the surface of the adhesive testing frame 210 and the inner wall of the feed box 208. A lifting block 211 is fixedly installed at the upper end of the adhesive testing frame 210. When the viscosity of the adhesive is too high, the adhesive viscosity increases the force pushing the adhesive testing frame 210 when the adhesive passes through the feed pipe 206, thereby controlling the moving distance of the adhesive testing frame 210 by the viscosity of the adhesive.

[0039] A resistance rod 213 is fixedly installed on the upper end of the feed box 208 near the lifting block 211. The resistance rod 213 is a rod made of resistive material in the prior art, which will not be described in detail here. A brush ring 212 is slidably sleeved on the outer wall of the resistance rod 213, and the brush ring 212 is fixedly installed on the side end of the lifting block 211. A energizing block 214 is fixedly installed on the upper end of the resistance rod 213, and a control line 209 is fixedly installed on the side end of the energizing block 214. The other end of the control line 209 is fixedly installed... The device is fixedly installed at the control end of the discharge pump 205. Specifically, when the viscosity of the adhesive increases the force pushing the adhesion measuring frame 210, the adhesion measuring frame 210 pushes the lifting block 211 to move upward by a greater distance, which increases the distance between the brush ring 212 and the energized block 214. The current transmitted to the discharge pump 205 through the control line 209 begins to increase, thereby increasing the output efficiency of the discharge pump 205. This overcomes the problem of poor flowability of high-viscosity materials through the forced feeding mechanism and can stabilize the coating viscosity.

[0040] The regulating mechanism 3 includes a control pump 301, which is fixedly installed on the upper end of the sealed box 109. A current line 306 is fixedly installed at the control end of the control pump 301, and the other end of the current line 306 is fixedly installed at the end of the energized block 214 away from the control line 209. A reflux gas-liquid separator 305 is fixedly installed at the discharge end of the control pump 301. The aforementioned reflux gas-liquid separator 305 is prior art and will not be described in detail here. A suction pipe 302 is fixedly installed at the suction end of the control pump 301, and both ends of the suction pipe 302 are fixedly installed with… The transfer pipe 303 is equipped with a sealing ring 304 at the end away from the suction pipe 302, and the sealing ring 304 is fixedly installed at both ends of the sealing box 109. Specifically, when the viscosity of the adhesive is too high, the lifting block 211 drives the brush ring 212 to move upward, shortening the distance between the brush ring 212 and the energizing block 214, thereby increasing the current transmitted to the current line 306, thereby improving the working efficiency of the control pump 301, and enabling the control pump 301 to adjust the output efficiency of the control pump 301 according to the adhesive with different viscosities.

[0041] A suction telescopic tube 310 is fixedly installed on the upper end of the sealing ring 304 near the scraper 108. A return pipe 309 is fixedly installed on the upper end of the suction telescopic tube 310. A suction rod 308 is fixedly installed between the return pipes 309, and the suction groove of the suction rod 308 is the same size as the material taking groove opened on the scraper 108. An installation telescopic rod 307 is fixedly installed between the suction rod 308 and the mounting box 105. Specifically, when the viscosity of the adhesive is too high, the control pump 301 starts to work and the output efficiency begins to increase, generating a greater suction force. When a greater suction force is generated, the adhesive flow rate is slow, causing the suction force generated by the control pump 301 to cause the suction telescopic tube 310 to begin to contract. The shortening of the suction telescopic tube 310 generates a downward force on the suction rod 308, and the force of the doctor blade 108 pressing against the anilox roller 106 increases. This allows for precise control of the coating thickness through the coating roller 107 and the doctor blade 108. Combined with the precision scraping of the doctor blade 108 and the precise control of the feeding mechanism 2, the coating amount tolerance is achieved within ±2%, which is significantly better than the traditional transfer doctor blade 108 coating.

[0042] Pull ropes 311 are symmetrically installed at both ends of the lifting block 211, and a guide frame is fixedly installed on the upper end of the feed box 208 near the pull ropes 311. When the measuring stick 210 pushes the lifting block 211 upward, the guide frame causes the lifting block 211 to pull the pull ropes 311. A winding ring 312 is wound around the end of the pull rope 311 away from the lifting block 211, and a rotating rod 313 is slidably installed on the inner wall of the winding ring 312. The sliding connection between the rotating rod 313 and the winding ring 312 is provided with protrusions and recesses, so that the winding ring 312 can drive the rotating rod 313 to rotate and avoid slippage. A threaded rod 314 is fixedly installed at the end of the rotating rod 313 away from the winding ring 312, and the end of the threaded rod 314 away from the rotating rod 313 rotates. Installed on the side of the mounting ring 115, the mounting box 105 is fixedly installed on the inner wall near the threaded rod 314, and the threaded rod 314 passes through the threaded hole of the threaded ring 315. Specifically, when a high-viscosity adhesive needs to be applied, the lifting block 211 rises, causing the lifting block 211 to pull the pulling rope 311 to start moving, causing the winding ring 312 to drive the rotating rod 313 to start rotating. The threaded rod 314 rotates in the threaded hole of the threaded ring 315, and the threaded rod 314 drives the mounting ring 115 to move, so that the mounting ring 115 drives the coating roller 107 to approach the anilox roller 106 through the mounting rod 111, controlling the coating distance when applying the high-viscosity adhesive, and avoiding the high-viscosity adhesive not being able to be applied to the material surface.

[0043] The temperature control mechanism 4 includes a temperature control cylinder 401, which is fixedly sleeved on the outer wall of the material transfer tube 206. A cooling ring 402 is provided at the upper end of the inner wall of the temperature control cylinder 401, and a heating ring 404 is provided at the lower end of the inner wall of the temperature control cylinder 401. Both the cooling ring 402 and the heating ring 404 are sleeved on the outer wall of the material transfer tube 206. A connecting block 403 is fixedly installed between the cooling ring 402 and the heating ring 404. A heating rod 410 is fixedly installed on the inner wall of the connecting block 403 near the cooling rod 409, and the heating rod 410 is fixedly installed at the control end of the heating ring 404. An insulating rod 41 is provided between the cooling rod 409 and the heating rod 410. 1. A heating rod 410 is fixedly installed on the inner wall of the connecting block 403 near the cooling rod 409, and the heating rod 410 is fixedly installed on the control end of the heating coil 404. An insulating rod 411 is provided between the cooling rod 409 and the heating rod 410. A pneumatic telescopic rod 407 is fixedly installed on the inner wall of the connecting block 403 near the heating rod 410. A brush block 408 is fixedly installed on the output end of the pneumatic telescopic rod 407, and the brush block 408 slides against the cooling rod 409, the heating rod 410, and the insulating rod 411. When the brush block 408 slides against the insulating rod 411, neither the cooling coil 402 nor the heating coil 404 works, and the adhesive is removed. Under normal temperature conditions, when the brush block 408 slides and contacts the heating rod 410, the heating coil 404 starts working to heat the adhesive in the transfer tube 206. When the brush block 408 slides and contacts the cooling rod 409, the cooling coil 402 starts working to cool the adhesive in the transfer tube 206. A gas transmission pipe 406 is fixedly installed at the input end of the pneumatic telescopic rod 407, and a temperature measuring cylinder 405 is fixedly installed at the end of the gas transmission pipe 406 away from the pneumatic telescopic rod 407. The temperature measuring cylinder 405 stores nitrogen gas for detecting the temperature of the adhesive. When the nitrogen gas expands and contracts due to thermal expansion and contraction, the volume change controls the pneumatic telescopic rod 407 to start working and measures the temperature. The cylinder 405 is located inside the transfer tube 206 near the discharge pump 205. Specifically, when the temperature measuring cylinder 405 detects that the temperature of the adhesive in the transfer tube 206 is too low, the pneumatic telescopic rod 407 begins to retract, causing the brush block 408 to slide into contact with the heating rod 410, and the heating coil 404 starts to work to heat the adhesive in the transfer tube 206. When the temperature measuring cylinder 405 detects that the temperature of the adhesive in the transfer tube 206 is too high, the pneumatic telescopic rod 407 begins to extend, and the cooling coil 402 starts to work to cool the adhesive in the transfer tube 206, thereby keeping the adhesive temperature within a suitable range and avoiding poor coating uniformity caused by temperature.

[0044] The working principle of this invention is as follows: When it is necessary to apply adhesive to the coating material, the coating material is placed on the placement shaft 101, and the material is passed through the mounting box 105 and the anilox roller 106, so that the other end of the material is wound around the outer wall of the take-up shaft 102. The drive housing 103 is started, and the drive housing 103 starts to work and drives the material to start moving to apply adhesive. When the material starts to be coated, when the adhesive passes through the transfer pipe 206, the viscosity of the adhesive causes the force pushing the adhesion measuring frame 210 to increase beyond the normal working range. The adhesion measuring frame 210 pushes the lifting block 211 to move up a greater distance, which increases the distance between the brush ring 212 and the energized block 214. The current transmitted to the discharge pump 205 through the control line 209 begins to increase, thereby increasing the output efficiency of the discharge pump 205. Thus, the problem of poor flowability of high-viscosity materials is overcome by the forced feeding mechanism, and the coating viscosity can be stabilized.

[0045] At the same time, the current in the current line 306 begins to increase, the control pump 301 starts to work and the output efficiency begins to increase, generating greater suction force. When greater suction force is generated, the suction force of the adhesive scraped off by the scraper 108 is increased to avoid the poor flowability of high viscosity adhesive, which accumulates in the contact area between the scraper 108 and the anilox roller 106, forming hard lumps and periodically falling off, resulting in longitudinal stripes or pits on the material surface.

[0046] Finally, due to the slow flow rate of the adhesive, the suction generated by the control pump 301 causes the suction telescopic tube 310 to begin to contract. The shortening of the suction telescopic tube 310 generates a downward force on the suction rod 308, and the force of the doctor blade 108 pressing against the anilox roller 106 increases. This allows for precise control of the coating thickness through the coating roller 107 and the doctor blade 108. Combined with the precision scraping of the doctor blade 108 and the precise control of the feeding mechanism 2, the coating amount tolerance is achieved within ±2%, which is significantly better than the traditional transfer doctor blade 108 coating.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A sealed anilox roller doctor blade coating device for a composite coating machine, comprising a coating machine work frame (1), characterized in that: A placement shaft (101) is rotatably mounted on the inner wall of the coating machine work frame (1). A take-up shaft (102) is rotatably mounted on the end of the coating machine work frame (1) away from the placement shaft (101). A drive housing (103) is fixedly mounted on the side end of the coating machine work frame (1) near the take-up shaft (102), and the take-up shaft (102) is fixedly connected to the output end of the drive housing (103). A transmission cylinder (104) for spreading the material is rotatably arranged on the inner wall of the coating machine work frame (1). An installation box (105) is fixedly mounted on the inner wall of the coating machine work frame (1) near the transmission cylinder (104). An anilox roller (106) is rotatably mounted in the inner wall of the installation box (105). A sealing box (109) is fixedly mounted on the inner wall of the installation box (105) near the anilox roller (106). A sliding part is provided on the inner wall of the sealing box (109). A scraper (108) for scraping off excess adhesive from the surface of the anilox roller (106) is provided. A coating roller (107) for applying adhesive is rotatably mounted on the inner wall of the mounting box (105) near the anilox roller (106). Both ends of the coating roller (107) are fixedly mounted with mounting rods (111). A mounting ring (115) is slidably mounted on the inner wall of the mounting box (105) near the mounting rods (111). The mounting ring (115) is rotatably sleeved on the outer wall of the mounting rods (111). A feeding mechanism (2) for controlling the transmission pressure according to the adhesive concentration is provided on the side of the mounting box (105) away from the anilox roller (106). An adjustment mechanism (3) for controlling the scraping force of the scraper (108) and the distance between the anilox roller (106) and the coating roller (107) by controlling the adhesive viscosity is provided in the inner wall of the mounting box (105) near the anilox roller (106).

2. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 1, characterized in that: The feeding mechanism (2) includes a storage tank (201) for storing adhesive liquid. The mounting box (105) has a sliding groove that fits into the storage tank (201) on its side end near the storage tank (201). The storage tank (201) is slidably disposed in the sliding groove. A discharge pipe (202) is fixedly installed on the side end of the storage tank (201) near the mounting box (105). A one-way hopper (203) is fixedly installed on the inner wall of the discharge pipe (202). A docking valve (204) is fixedly installed on the inner wall of the mounting box (105) near the one-way hopper (203). A discharge pump (205) is fixedly installed on the end of the docking valve (204) away from the one-way hopper (203).

3. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 2, characterized in that: The output end of the discharge pump (205) is fixedly installed with a transfer pipe (206). A temperature control mechanism (4) for detecting and controlling the temperature of the adhesive in the transfer pipe (206) is sleeved on the outer wall of the transfer pipe (206). A flow meter (207) is fixedly installed at the upper end of the discharge pump (205). A feed box (208) is fixedly installed at the upper end of the flow meter (207). The discharge end of the feed box (208) is connected to the inlet end of the sealing box (109). A viscosity tester (210) is slidably installed on the upper end of the inner wall of the flow meter (207) near the feed box (208). A lifting block (211) is fixedly installed on the upper end of the viscosity tester (210).

4. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 3, characterized in that: A resistance rod (213) is fixedly installed on the upper end of the feed box (208) near the lifting block (211). A brush ring (212) is slidably sleeved on the outer wall of the resistance rod (213), and the brush ring (212) is fixedly installed on the side end of the lifting block (211). A power block (214) is fixedly installed on the upper end of the resistance rod (213). A control line (209) is fixedly installed on the side end of the power block (214), and the other end of the control line (209) is fixedly installed on the control end of the discharge pump (205).

5. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 4, characterized in that: The regulating mechanism (3) includes a control pump (301), which is fixedly installed on the upper end of the sealed box (109). A current line (306) is fixedly installed on the control end of the control pump (301), and the other end of the current line (306) is fixedly installed on the end of the energized block (214) away from the control line (209). A return gas-liquid separator (305) is fixedly installed on the discharge end of the control pump (301). A suction pipe (302) is fixedly installed on the suction end of the control pump (301). A transfer pipe (303) is fixedly installed on both ends of the suction pipe (302). A sealing ring (304) is provided on the end of the transfer pipe (303) away from the suction pipe (302), and the sealing ring (304) is fixedly installed on both ends of the sealed box (109).

6. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 5, characterized in that: The sealing ring (304) is fixedly installed with a suction telescopic tube (310) near the upper end of the scraper (108). The upper end of the suction telescopic tube (310) is fixedly installed with a return pipe (309). The return pipe (309) is fixedly installed with a suction rod (308). The suction rod (308) and the mounting box (105) are fixedly installed with an installation telescopic rod (307).

7. A sealed anilox roller doctor blade coating device for a composite coating machine according to claim 6, characterized in that: The lifting block (211) is symmetrically equipped with pull ropes (311) at both ends. The end of the pull rope (311) away from the lifting block (211) is wound with a winding ring (312). A rotating rod (313) is slidably installed on the inner wall of the winding ring (312). A threaded rod (314) is fixedly installed on the end of the rotating rod (313) away from the winding ring (312). The end of the threaded rod (314) away from the rotating rod (313) is rotatably installed on the side of the mounting ring (115). A threaded ring (315) is fixedly installed on the inner wall of the mounting box (105) near the threaded rod (314). The threaded rod (314) passes through the threaded hole opened in the threaded ring (315).

8. The sealed anilox roller doctor blade coating device for a composite coating machine according to claim 3, characterized in that: The temperature control mechanism (4) includes a temperature control cylinder (401), which is fixedly sleeved on the outer wall of the material transfer tube (206). A cooling ring (402) is provided at the upper end of the inner wall of the temperature control cylinder (401), and a heating ring (404) is provided at the lower end of the inner wall of the temperature control cylinder (401). Both the cooling ring (402) and the heating ring (404) are sleeved on the outer wall of the material transfer tube (206). A connecting block (403) is fixedly installed between the cooling ring (402) and the heating ring (404). The connecting block (403) is close to the cooling ring (402). A cooling rod (409) is fixedly installed on the inner wall of the connecting block (403) near the inner wall of the cooling rod (409). A heating rod (410) is fixedly installed on the inner wall of the connecting block (403) near the cooling rod (409). The heating rod (410) is fixedly installed on the control end of the heating coil (404). An insulating rod (411) is provided between the cooling rod (409) and the heating rod (410). A pneumatic telescopic rod (407) is fixedly installed on the inner wall of the connecting block (403) near the heating rod (410). A brush block (408) is fixedly installed on the output end of the pneumatic telescopic rod (407).

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