Cleaning device for nozzle of coating machine

Abstract

The invention belongs to the technical field of coating machine nozzle cleaning, and discloses a coating machine nozzle cleaning device which comprises a machine base, a water storage tank is formed in the inner wall of the top end of the machine base, and a filter screen plate is fixedly connected into the inner wall of the top end of the water storage tank and used for collecting liquid for cleaning a nozzle. A plurality of groups of water outlet holes are formed in the side machine body of the machine base and communicated with the water storage tank, and a cleaning part is arranged on the machine base; the electric heating pipe is used for heating water to generate high-temperature steam, the steam permeates the inner wall of the nozzle to soften stubborn dirt, high-pressure water flow is generated according to the piston negative pressure principle, deformation control of the cleaning cylinder is matched, precise impact force adjustment is achieved, and the cleaning efficiency is improved. And compared with traditional soaking or ultrasonic cleaning, the steam softening and dynamic water pressure are combined, and the thoroughness in cleaning and the equipment safety are both considered.

Description

Technical Field

[0001] This invention belongs to the field of coating machine nozzle cleaning technology, specifically a cleaning device for coating machine nozzles. Background Technology

[0002] Coating machines are mainly used for surface coating processes of films, paper, etc. They come in various forms, with flat nozzles and spiral cylindrical shapes being the most common. They can coat a roll of substrate with a layer of adhesive, paint, or ink with specific functions, and then dry it before cutting it into sheets or rewinding it. Coating machines use dedicated multi-functional coating heads to achieve various forms of surface coating. In coating machines, the nozzle is a key component, often used to spray adhesives or other coatings. Its function is to evenly spray the adhesive or paint onto the surface of the object to be coated. During the coating process, the nozzle often becomes clogged or unevenly sprayed due to paint residue, impurity accumulation, etc., which affects the coating quality and production efficiency. Currently, there is a published patent number CN213855312U for a coating machine nozzle cleaning device, which includes a base, a cleaning box fixedly mounted on the top of the base, and a mounting frame mounted outside the cleaning box. In this invention, a liftable mounting plate is provided, and a placement rack at the bottom of the mounting plate extends into the cleaning tank. The coating machine nozzles placed on the placement rack can be ultrasonically cleaned by an ultrasonic generator and transducer. After cleaning, a lifting cylinder lifts the placement rack out of the cleaning tank, and simultaneously, the air intake fan and electric heating grid are turned on to dry the coating machine nozzles with hot air. This equipment can achieve integrated cleaning and drying of coating machine nozzles, is easy to operate, and is suitable for widespread use. The cleaning method mentioned above is too "superficial". For the cured coatings (such as UV glue and acrylic coatings) attached to the inner wall of the coating machine nozzle, it can only act on the surface dirt, and the energy is easily weakened by the nozzle cavity structure, resulting in a high dirt residue rate in the deep cavity and corner gaps. Furthermore, most existing automated nozzle cleaning equipment uses a relatively simple cleaning method, such as direct high-pressure water rinsing or solvent soaking. Such cleaning methods are wasteful of resources and cannot be adjusted according to different nozzle shapes to match various nozzle shapes for cleaning, ensuring targeted cleaning and improving cleaning effect. Summary of the Invention

[0003] To address the problems mentioned in the background section, the present invention provides a cleaning device for a coating machine nozzle.

[0004] This invention provides the following technical solution: a cleaning device for a coating machine nozzle, comprising a machine base, a water storage tank in the inner wall of the top of the machine base, a filter screen plate fixedly connected to the inner wall of the top of the water storage tank for collecting liquid for cleaning the nozzle, multiple sets of water outlet holes in the side of the machine base communicating with the water storage tank, a cleaning part on the machine base, the cleaning part including multiple storage trays, a solid upright plate at the opposite symmetrical position of each storage tray, a retainer on the outer wall of each storage tray and the solid upright plate near the top and symmetrical to each other for clamping and limiting the nozzle, the retainer on the storage tray is slidably connected to it, and the retainer on the solid upright plate is fixedly connected to it, a steam softening structure is provided between the storage tray and the corresponding retainer, a spring is fixedly connected between the storage tray and the corresponding retainer, and a water pressure structure for cleaning dirt on the inner wall of the nozzle is also provided on the steam softening structure.

[0005] Preferably, the steam softening structure includes a meshing assembly mounted on a support frame. The meshing assembly is specifically composed of a spur gear and toothed plates that mesh with its upper and lower ends. One end of the upper toothed plate is fixedly connected to one end of the support frame. A rotating rod is movably sleeved on the spur gear. Both ends of the rotating rod are fixedly connected to the inner wall of the storage tray plate. Two sleeve rods are fixedly connected to the outer walls of both ends of the lower toothed plate. A U-shaped slide is slidably connected to the other end of each sleeve rod. The two ends of the two U-shaped slides are respectively fixedly connected to the inner walls of the two ends of the storage trough plate.

[0006] Preferably, a bent plate is fixedly connected to one end of the lower toothed plate. The bent plate can be intermittently fitted and connected to the inner wall of the storage trough plate. A T-shaped plug is fixedly connected to one end of the bent plate near the bottom. The T-shaped plug can slide and engage with the inner wall of the storage trough plate. A flow guide groove is provided through the inner wall of the storage trough plate. A water storage tank is directly connected to the other end of the flow guide groove.

[0007] Preferably, the water storage tank and the storage trough are fixedly connected near the top, and an electric heating tube for heating the liquid is fixedly connected to the inner wall of the bottom end of the storage trough.

[0008] Preferably, the water pressure structure includes a bent pipe that is fixedly connected to the storage trough plate. Part of the bent pipe is made of a corrugated telescopic pipe. A bucket plate is fixedly connected to one end of the bent pipe. A piston plate is intermittently and slidably connected to the inner wall of the bucket plate. The piston plate is made of two plates of different materials. The upper plate is made of natural rubber, and the lower plate is made of metal. A T-shaped metal rod is fixedly connected to the bottom end of the piston plate. The outer wall of the bottom end of the T-shaped metal rod is fixedly connected to the inner wall of the bottom end of the storage trough plate.

[0009] Preferably, a cleaning cylinder is fixedly connected to the other end of the bent pipe, and a sleeve rod two is also fixedly connected to the bent pipe. A folding curtain is fixedly connected to the sleeve rod two. A rectangular groove for fixing the upper and lower ends of the folding curtain is opened through one end of the storage tray plate, and a sleeve rod three is fixedly connected to the sleeve rod two.

[0010] Preferably, a horizontal plate is fixedly connected to the rod body of the third sleeve rod, and an electric cylinder is fixedly connected to the bottom plate of the horizontal plate. The bottom outer wall of the electric cylinder is fixedly connected to the machine base. An elastic telescopic member is also fixedly connected to the rod body of the second sleeve rod. The rod body of the elastic telescopic member is composed of two smooth rod sections.

[0011] Preferably, an inclined column is fixedly connected to the top of the rod of the elastic telescopic member, and an L-shaped elastic sleeve rod is slidably connected to the outer wall of one inclined end of the inclined column.

[0012] Preferably, the other end of the L-shaped elastic sleeve is fixedly connected to the tube body of the bent tube, wherein the L-shaped elastic sleeves are connected by two long plates that pass through and limit each other.

[0013] Preferably, a sleeve plate is fixedly connected to the outer wall of one section of the L-shaped elastic sleeve rod, and inclined angle plates are fixedly connected to the outer walls of both sides of the top plate of the sleeve plate. The inclined end of the two inclined angle plates is slidably connected to the outer walls of both ends of the cleaning cylinder.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention uses an electric heating element to heat water to generate high-temperature steam, which penetrates the inner wall of the nozzle to soften stubborn dirt. It also uses the piston negative pressure principle to generate high-pressure water flow, and with the deformation control of the cleaning cylinder (adjusted by the inclined angle plate), it achieves precise impact force adjustment and improves cleaning efficiency. This invention automatically triggers the toothed plate drive when the nozzle is placed, simultaneously releasing the blockage of the guide groove and starting heating. Through the preset limit of the L-shaped elastic sleeve rod, it can be directly adapted to the flat nozzle shape, improving the usability of the cleaning device. Furthermore, the mechanical linkage controls the start and stop of water flow, reducing reliance on external power. Compared with traditional soaking or ultrasonic cleaning, this device, through the combination of "steam softening plus dynamic water pressure", balances thorough cleaning with equipment safety, making it particularly suitable for the maintenance of nozzles on precision coating machines. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the overall planar structure of the present invention; Figure 3 This is a partial cross-sectional structural diagram of the storage trough plate of the present invention; Figure 4 For the present invention Figure 3 A magnified view of the structure at point A in the middle; Figure 5 This is a schematic diagram of the planar cross-sectional structure of the storage trough and water tank of the present invention; Figure 6 For the present invention Figure 5 A magnified schematic diagram of the structure at point B in the middle; Figure 7 For the present invention Figure 3 A magnified schematic diagram of the structure at point C in the middle; Figure 8 This is a partial cross-sectional structural diagram of the L-shaped telescopic sleeve of the present invention.

[0016] In the picture: 1. Base; 101. Filter screen; 102. Water outlet; 2. Cleaning section; 201. Storage tray; 202. Shelf; 203. Solid upright; 204. Spring 1; 205. Engaging assembly; 206. Rotating rod; 207. Sleeve 1; 208. U-shaped slide; 209. Bending plate; 210. T-shaped plug; 211. Flow guide; 212. Water tank; 213. Heating element; 214. Bending tube; 215. Bucket plate; 216. Piston plate; 217. T-shaped metal rod; 218. Cleaning cylinder; 219. Sleeve 2; 220. Folding curtain; 221. Sleeve 3; 222. Horizontal plate; 223. Electric cylinder; 224. Elastic telescopic component; 225. Sloping column; 226. L-shaped elastic sleeve; 227. Sleeve plate; 228. Sloping angle plate. Detailed Implementation

[0017] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0018] like Figures 1 to 8As shown, a cleaning device for a coating machine nozzle includes a base 1. A water storage tank is formed in the inner wall of the top of the base 1. A filter screen 101 is fixedly connected to the inner wall of the top of the water storage tank for collecting liquid for cleaning the nozzle. Multiple sets of water outlet holes 102 are formed on the side of the base 1 connecting to the water storage tank. A cleaning section 2 is provided on the base 1. The cleaning section 2 includes multiple storage trays 201. A solid upright plate 203 is provided at the opposite symmetrical position of each storage tray 201. Each storage tray 201 and solid upright plate 203... 3. Each of the outer walls near the top and symmetrical to each other is provided with a retainer 202 for clamping and limiting the nozzle. The retainer 202 on the storage tray 201 is slidably connected to it, while the retainer 202 on the solid upright plate 203 is fixedly connected to it. A steam softening structure is provided between the storage tray 201 and the corresponding retainer 202. A spring 204 is fixedly connected between the storage tray 201 and the corresponding retainer 202. The steam softening structure is also provided with a water pressure structure for cleaning dirt from the inner wall of the nozzle.

[0019] Using the above scheme: the water stored in the water tank 212 is guided to the inner cavity of the storage trough 201 through the guide channel 211. The flowing water is automatically heated by the existing electric heating tube 213 installed in the storage trough 201 to form high-temperature water. The high-temperature water vapor generated by the heated water will rise naturally. Some of the water vapor will drift out from the cleaning cylinder 218 through the bucket plate 215 and the bend pipe 214. The cleaning cylinder 218 is placed directly below the downward-facing nozzle of the coating machine. The high-temperature water vapor penetrates into the nozzle and circulates continuously. The high-temperature steam can quickly soften and separate the dirt attached to the inner wall of the nozzle. By starting the electric cylinder 223, the horizontal plate 212 is driven... 22 and sleeve rod 221 move down synchronously. Sleeve rod 221 will drive sleeve rod 219 to move down, thereby squeezing and stretching the folding curtain 220 installed on the storage trough plate 201. The passively moving sleeve rod 219 will pull part of the bent pipe 214 to extend and move down, so that it can directly drive the bucket plate 215 and piston plate 216 to slide and make contact, creating a negative pressure state on the inner wall of the bucket plate 215. The water that inevitably exists between the two will be suddenly driven by the generated piston negative pressure to flow in the pipe of the bent pipe 214. Subsequently, it is sprayed out through the cleaning cylinder 218 with impact force, and water pressure washes the nozzle above that has softened the dirt with high temperature water vapor.

[0020] The steam softening structure includes a meshing assembly 205 mounted on a support frame 202. The meshing assembly 205 specifically consists of a spur gear and toothed plates meshing with its upper and lower ends. One end of the upper toothed plate is fixedly connected to one end of the support frame 202. A rotating rod 206 is movably sleeved on the spur gear. Both ends of the rotating rod 206 are fixedly connected to the inner wall of the storage tray 201. Sleeve rods 207 are fixedly connected to the outer walls of both ends of the lower toothed plate. U-shaped carriages 208 are slidably connected to the other ends of both sleeve rods 207. The two ends of the two U-shaped carriages 208 are respectively connected to the inner walls of both ends of the storage tray 201. The wall is fixedly connected, and a bent plate 209 is fixedly connected to one end of the lower toothed plate. The bent plate 209 can be intermittently fitted to the inner wall of the storage trough plate 201. A T-shaped plug 210 is fixedly connected to the end of the bent plate 209 near the bottom. The T-shaped plug 210 can slide and engage with the inner wall of the storage trough plate 201. A flow guide trough 211 is opened through the inner wall of the storage trough plate 201. A water storage tank 212 is directly connected to the other end of the flow guide trough 211. The water storage tank 212 is fixedly connected to the plate near the top of the storage trough plate 201. An electric heating tube 213 for heating liquid is fixedly connected to the inner wall of the bottom end of the storage trough plate 201.

[0021] The above solution involves placing the nozzle of the coating machine downwards between two support frames 202. A spring 204 installed between one of the support frames 202 and the storage tray 201 limits and fixes the nozzle, ensuring that the discharge end of the nozzle is placed downwards during the cleaning process. Figure 3 As shown, the force-driven compression spring 204's abutment 202 will cause part of the rod to translate within the storage slot 201, which will directly drive the upper toothed plate in the meshing assembly 205 to translate. This, in turn, drives the spur gear to rotate around the rotating rod 206, thus transmitting power to the lower toothed plate, achieving opposite translation of the two toothed plates. The translation of the lower toothed plate will be guided by the sleeve rods 207 installed at both ends on the U-shaped slide 208. At the same time, such as Figure 6 As shown, the translation of the lower toothed plate will cause the bent plate 209 and the T-shaped plug 210 fixed on the bent plate 209 to detach from the inner wall of the storage tray plate 201. The movement of the T-shaped plug 210 will also release the blockage on one end of the guide channel 211. As a result, the water stored in the water tank 212 will naturally be guided into the inner cavity of the storage tray plate 201 through the guide channel 211. Figure 3 and Figure 5 As shown, the downstream water will be automatically heated by the prior art electric heating tube 213 installed in the storage tank plate 201 to form a high temperature water body.

[0022] The hydraulic structure includes a bent pipe 214 that is fixedly connected to the storage trough plate 201. Part of the bent pipe 214 is made of corrugated telescopic pipe. A bucket plate 215 is fixedly connected to one end of the bent pipe 214. A piston plate 216 is intermittently and slidably connected to the inner wall of the bucket plate 215. The piston plate 216 is made of two plates of different materials: the upper plate is made of natural rubber, and the lower plate is made of metal. A T-shaped metal rod 217 is fixedly connected to the bottom end of the piston plate 216. The outer wall of the bottom end of the T-shaped metal rod 217 is fixedly connected to the inner wall of the bottom end of the storage trough plate 201. The other end of the bent pipe 214 is fixedly connected to... The device includes a cleaning cylinder 218 and a bending pipe 214. A sleeve rod 219 is fixedly connected to the pipe body of the sleeve rod 219. A folding curtain 220 is fixedly connected through the sleeve rod 219. A rectangular groove for fixing the upper and lower ends of the folding curtain 220 is opened through the plate body of the storage tray 201. A sleeve rod 221 is fixedly connected to the sleeve rod 219. A horizontal plate 222 is fixedly connected to the sleeve rod 221. An electric cylinder 223 is fixedly connected to the bottom plate body of the horizontal plate 222. The bottom outer wall of the electric cylinder 223 is fixedly connected to the machine base 1. An elastic telescopic member 224 is also fixedly connected to the sleeve rod 219. The rod part of the elastic telescopic member 224 is composed of two smooth rods.

[0023] Using the above scheme: the high-temperature water vapor generated by heating the water will rise naturally, and some of the water vapor will drift out from the cleaning cylinder 218 through the bucket plate 215 and the bend pipe 214. The cleaning cylinder 218 is placed directly below the downward-facing nozzle of the coating machine, so the guided water vapor will directly contact the nozzle. The high-temperature water vapor will penetrate into the nozzle and circulate continuously. The high-temperature steam can quickly soften and separate the dirt attached to the inner wall of the nozzle. It has excellent penetrability and dissolving ability, and can quickly soften stains and dirt, making them easy to remove. After the nozzle is fully softened by high-temperature steam, such as Figure 1 and Figure 5As shown, by activating the electric cylinder 223, the horizontal plate 222 and the sleeve rod 221 installed on the horizontal plate 222 are moved downward synchronously. The sleeve rod 221 will also drive the connected sleeve rod 219 to move downward, thereby squeezing and stretching the folding curtain 220 installed on the storage trough plate 201. The folding curtain 220 maintains the sealing state of the storage trough plate 201 in real time. Meanwhile, the passively moving sleeve rod 219 will pull part of the bent tube 214 to extend downward, so that it can directly drive the bucket plate 215 and the piston plate 216 installed on the T-shaped metal rod 217 to slide into contact, generating a negative pressure state on the inner wall of the bucket plate 215. At that time, the bucket plate 215 When the piston plate 216 comes into contact with the piston 5, the water that inevitably exists between them will be suddenly driven by the negative pressure of the piston to flow in the tube body of the bent tube 214. Subsequently, the water with impact force is sprayed out through the cleaning cylinder 218, and water pressure is used to flush the nozzle above which has been softened by high temperature water vapor. The water will directly enter the inner cavity of the nozzle through the outlet, uniformly flushing out the dirt attached to the inner cavity or solving the problem of dirt still adhering to the inner wall of the nozzle, thus cleaning the inner wall of the nozzle. At the same time, as the sleeve rod 221 passively drives the sleeve rod 219 to move down, it will also directly drive the elastic telescopic component 224 to move down.

[0024] An inclined column 225 is fixedly connected to the top of the rod of the elastic telescopic component 224. An L-shaped elastic sleeve rod 226 is slidably connected to the outer wall of one inclined end of the inclined column 225. The other end of the L-shaped elastic sleeve rod 226 is fixedly connected to the tube body of the bent tube 214. The L-shaped elastic sleeve rods 226 are connected to each other by two long plates that pass through and limit each other. A sleeve plate 227 is fixedly connected to the outer wall of one section of the L-shaped elastic sleeve rod 226. An inclined angle plate 228 is fixedly connected to the outer walls of both sides of the top plate of the sleeve plate 227. The inclined end of the two inclined angle plates 228 is slidably connected to the outer walls of both ends of the cleaning cylinder 218.

[0025] Using the above scheme: the elastic telescopic component 224 and the inclined column 225 installed on the top of the elastic telescopic component 224 move downwards. The downward movement of the inclined column 225 will gradually compress the L-shaped elastic sleeve rod 226 through the inclined surface, causing the rod to contract. The L-shaped elastic sleeve rod 226 in the contracted state will drive the two inclined angle plates 228 connected and installed by the sleeve plate 227 to move horizontally, so that it can compress the cleaning cylinder 218, causing it to deform. Most of the cylinder body becomes flat, thereby controlling and changing the water output state of the cleaning cylinder 218. During the gradual compression of the cleaning cylinder 218, the water body will also have a stronger impact force and a more concentrated flushing force, such as... Figure 7As shown, when the two inclined angle plates 228 are passively moved to the rightmost position, the sleeve rod 219 still has space to be passively moved downward. This process will apply additional force to the elastic telescopic member 224. At this time, the elastic telescopic member 224 will deform to make the two rods separate from the contact. This does not affect the continuous formation of the piston negative pressure and allows the cleaning cylinder 218 to remain in a pressurized state.

[0026] The working principle and usage process of this invention: By placing the nozzle of the coating machine downwards between two support frames 202, the nozzle is limited and fixed by a spring 204 installed between one of the support frames 202 and the storage tray 201. Thus, the discharge end of the nozzle is placed downwards during the cleaning process. The support frame 202, under pressure, moves and compresses the spring 204, causing part of the rod to translate within the storage tray 201. This directly drives the upper toothed plate in the meshing assembly 205 to translate, thereby driving the spur gear to rotate around the rotating rod 206, which in turn drives the lower toothed plate to translate in opposite directions. The translation of the lower toothed plate is guided by the sleeve rods 207 installed at both ends on the U-shaped slide 208. Simultaneously, the lower... The translation of the square toothed plate will cause the bending plate 209 and the T-shaped plug 210 fixed on the bending plate 209 to detach from the inner wall of the storage trough plate 201. The movement of the T-shaped plug 210 will also release the blockage on one end of the guide channel 211. As a result, the water stored in the water tank 212 will naturally flow through the guide channel 211 into the inner cavity of the storage trough plate 201. The flowing water will be automatically heated by the existing electric heating tube 213 installed in the storage trough plate 201 to form a high-temperature water body. The high-temperature water vapor generated by the water body will rise naturally. Some of the water vapor will drift out from the cleaning cylinder 218 through the bucket plate 215 and the bending pipe 214. The cleaning cylinder 218 is placed directly below the downward-facing coating machine nozzle, so the guided water vapor will directly contact the nozzle. After the nozzle is sufficiently softened by high-temperature steam, the electric cylinder 223 drives the horizontal plate 222 and the sleeve rod 221 installed on the horizontal plate 222 to move down synchronously. The sleeve rod 221 will also drive the connected sleeve rod 219 to move down, thereby squeezing and stretching the folding curtain 220 installed on the storage trough plate 201. The passively moving sleeve rod 219 will pull part of the bent tube 214 to extend and move down, so that it can directly drive the piston plate 216 installed on the bucket plate 215 and the T-shaped metal rod 217 to slide. Upon contact, a negative pressure is generated on the inner wall of the bucket plate 215. When the bucket plate 215 and the piston plate 216 come into contact, the water that inevitably exists between them will be suddenly driven by the negative pressure of the piston to flow in the tube of the bent pipe 214. Subsequently, water with impact force is sprayed out through the cleaning cylinder 218 to flush the nozzle above, which has softened the dirt with high-temperature water vapor. At the same time, as the sleeve rod 221 passively drives the sleeve rod 219 to move downward, it will also directly drive the elastic telescopic component 224 and the elastic telescopic component 224. The inclined column 225 installed at the top moves downward. As the inclined column 225 moves downward, it gradually squeezes the L-shaped elastic sleeve 226 through the inclined surface, causing the sleeve to contract. The L-shaped elastic sleeve 226 in the contracted state will drive the two inclined angle plates 228 connected by the sleeve plate 227 to move horizontally, so that it can squeeze the cleaning cylinder 218, causing it to deform. Most of the cylinder becomes flat, thereby controlling and changing the water output state of the cleaning cylinder 218. The water after use will fall directly onto the machine base 1 and be filtered by the filter screen 101. The water contains impurities and dirt, allowing it to flow directly through multiple outlet holes 102. At this point, simply place several collection buckets on the side of the base 1 to collect the filtered hot water. This water can then be poured back into the storage tank 212 for resource utilization. By retracting the L-shaped elastic sleeve 226 beforehand, and limiting the retracted L-shaped elastic sleeve 226 with a belt or rope, the two inclined angle plates 228 directly squeeze the cleaning cylinder 218 into a flat shape, which can then be directly adapted to the flat nozzle.

[0027] One point that needs to be added is that the heating process of the heating element 213 is that when the current passes through the resistor, the current does work and consumes electrical energy, generating heat. The heating is generated by the resistance wire inside the heating element. This is existing technology, so I will not go into too much detail here.

Claims

1. A cleaning device for a coating machine nozzle, comprising a machine base (1), characterized in that: The machine base (1) has a water storage tank in the inner wall of the top end. A filter screen plate (101) is fixedly connected to the inner wall of the top end of the water storage tank for collecting the liquid used to clean the nozzle. Multiple sets of water outlet holes (102) are opened on the side of the machine body of the machine base at the water storage tank. The machine base is provided with a cleaning part (2), which includes multiple storage trays (201). Each storage tray is provided with a solid upright plate (203) at the opposite symmetrical position. Each storage tray and the solid upright plate is provided with a support frame (202) on the outer wall of the end near the top and symmetrical to each other for clamping and limiting the nozzle. The support frame on the storage tray is slidably connected to it, while the support frame on the solid upright plate is fixedly connected to it. A steam softening structure is provided between the storage tray and the corresponding support frame. A spring (204) is fixedly connected between the storage tray and the corresponding support frame. The steam softening structure is also provided with a water pressure structure for cleaning the dirt on the inner wall of the nozzle.

2. The cleaning device for the coating machine nozzle according to claim 1, characterized in that: The steam softening structure includes a meshing assembly (205) mounted on a support frame. The meshing assembly is specifically composed of a spur gear and a toothed plate that meshes with its upper and lower ends. One end of the upper toothed plate is fixedly connected to one end of the support frame. A rotating rod (206) is movably sleeved on the spur gear. Both ends of the rotating rod are fixedly connected to the inner wall of the storage trough plate. A sleeve rod (207) is fixedly connected to the outer wall of one end of the lower toothed plate. A U-shaped slide (208) is slidably connected to the other end of the two sleeve rods (207). The two ends of the two U-shaped slides (208) are respectively fixedly connected to the inner wall of the two ends of the storage trough plate (201).

3. The cleaning device for the coating machine nozzle according to claim 2, characterized in that: A bent plate (209) is fixedly connected to one end of the lower toothed plate. The bent plate (209) can be intermittently fitted to the inner wall of the storage trough plate (201). A T-shaped plug (210) is fixedly connected to one end of the bent plate (209) near the bottom. The T-shaped plug (210) can slide and engage with the inner wall of the storage trough plate (201). A flow guide groove (211) is opened through the inner wall of the storage trough plate (201). A water storage tank (212) is directly connected to the other end of the flow guide groove (211).

4. The cleaning device for the coating machine nozzle according to claim 3, characterized in that: The water storage tank (212) and the storage trough plate (201) are fixedly connected near the top of the plate, and an electric heating tube (213) for heating the liquid is fixedly connected in the inner wall of the bottom end of the storage trough plate (201).

5. The cleaning device for the coating machine nozzle according to claim 1, characterized in that: The water pressure structure includes a bent pipe (214) that is fixedly connected to the plate of the storage trough (201). Part of the pipe of the bent pipe (214) is made of a corrugated telescopic pipe. A bucket plate (215) is fixedly connected to one end of the pipe of the bent pipe (214). A piston plate (216) is intermittently fitted and slidably connected to the inner wall of the bucket plate (215). The piston plate (216) is made of two plates of different materials. The upper plate is made of natural rubber and the lower plate is made of metal plate. A T-shaped metal rod (217) is fixedly connected to the bottom end of the piston plate (216). The outer wall of the bottom end of the T-shaped metal rod (217) is fixedly connected to the inner wall of the bottom end of the storage trough (201).

6. The cleaning device for the coating machine nozzle according to claim 5, characterized in that: A cleaning cylinder (218) is fixedly connected to the other end of the bent pipe (214). A sleeve rod two (219) is also fixedly connected to the pipe body of the bent pipe (214). A folding curtain (220) is fixedly connected to the rod body of the sleeve rod two (219). A rectangular groove for fixing the upper and lower ends of the folding curtain (220) is opened through one end of the storage trough plate (201). A sleeve rod three (221) is fixedly connected to the rod body of the sleeve rod two (219).

7. The cleaning device for the coating machine nozzle according to claim 6, characterized in that: A horizontal plate (222) is fixedly connected to the rod body of the third sleeve rod (221). An electric cylinder (223) is fixedly connected to the bottom plate of the horizontal plate (222). The bottom outer wall of the electric cylinder (223) is fixedly connected to the machine base (1). An elastic telescopic member (224) is also fixedly connected to the rod body of the second sleeve rod (219). The rod body of the elastic telescopic member (224) is composed of two smooth rods.

8. The cleaning device for the coating machine nozzle according to claim 7, characterized in that: An inclined column (225) is fixedly connected to the top of the rod of the elastic telescopic member (224), and an L-shaped elastic sleeve rod (226) is slidably connected to the outer wall of one end of the inclined column (225).

9. The cleaning device for the nozzle of a coating machine according to claim 8, characterized in that: The other end of the L-shaped elastic sleeve (226) is fixedly connected to the tube body of the bent tube (214), wherein the L-shaped elastic sleeve (226) is connected by two long plates through which it is limited and slidably connected.

10. The cleaning device for the coating machine nozzle according to claim 9, characterized in that: A sleeve plate (227) is fixedly connected to the outer wall of one section of the L-shaped elastic sleeve rod (226). An inclined angle plate (228) is fixedly connected to the outer walls of both sides of the top plate of the sleeve plate (227). The inclined end of the two inclined angle plates (228) is in close contact with the outer walls of both ends of the cleaning cylinder (218).

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