A spray paint color changing system

Abstract

The utility model relates to a spraying technical field especially is concerned about a kind of spraying color changing system, it includes spray gun, mixing unit, main agent color changing supply unit, curing agent color changing supply unit.The module of head cleaning function of supplementary in main agent color changing supply unit in traditional spraying color changing system, and the main agent cleaning module of traditional main agent agent color changing supply unit, and the cleaning access end of the module of cup head cleaning function of supplementary is equipped with the external cleaning interface and cup head cleaning interface for installation more convenient, the connection and disassembly of pipeline are facilitated, and are equipped with quick plug buckle, further prevent pipeline burst, curing agent cleaning module is connected with the module of external cleaning function, can directly pass through curing agent color changing valve group to lead out a pipeline to clean curing agent pipeline in front-end mixing unit, make overall structure compact, avoid the connection of too many pipelines.

Description

Technical Field

[0001] This utility model relates to the field of spraying technology, and in particular to a spraying color-changing system. Background Technology

[0002] As my country places increasing emphasis on environmental protection, energy-saving and environmentally friendly coating equipment and processes are gradually being widely used in domestic coating lines. Two-component coatings have gained increasing praise and recognition from owners in various industries due to their environmental friendliness, weather resistance, and excellent comprehensive physical and chemical properties. While gaining extensive practical application experience, they are also being recognized and promoted in the spraying industry.

[0003] In actual factory applications, two-component coatings must be mixed together before use, and the mixed paint must be used within a very short time (within a few hours), otherwise it will become ineffective and harden.

[0004] Two-component coatings: a type of cross-linking curing paint that requires the addition of a curing agent in a specific ratio to cure into a film. The two components are mixed to produce a cross-linking reaction to form the paint film (a chemical reaction).

[0005] In two-component coatings, the hardener accelerates the film-forming process. Once the base agent and hardener are mixed in a specific ratio, they cure very easily. If not cleaned or used promptly, this can clog equipment and cause significant malfunctions in spraying tools. Furthermore, the hardener readily hardens and deteriorates upon contact with air, leading to equipment blockages and affecting the quality of the paint film.

[0006] A search revealed Chinese Patent Publication No. CN208389945U, which discloses an automatic two-component coating mixing system. The robotic arm is equipped with a servo motor, a coating metering pump, and a curing agent metering pump. The servo motor is connected to the coating metering pump and the curing agent metering pump for control. Pressure sensors are installed at the outlets of the coating metering pump and the curing agent metering pump. The coating metering pump is connected to the mixing module pipeline via a coating color-changing valve, and the curing agent metering pump is connected to the mixing module pipeline via a curing agent switching valve.

[0007] Regarding the aforementioned technologies, the inventors have discovered the following drawbacks: Existing cleaning modules have limited functionality, typically only capable of cleaning the main agent pipeline. Cleaning critical components such as the spray nozzle requires an additional, separate cleaning valve assembly, which not only increases system complexity but also occupies more space. Furthermore, traditional mixing units are often made of stainless steel, resulting in significant weight, inconvenient installation and maintenance, and excessively long color-changing pipelines, leading to extended color-changing times and wasted paint and solvents. Utility Model Content

[0008] In order to solve the problems mentioned in the background art, the present invention provides a spray coating color change system.

[0009] This utility model provides a spraying color-changing system, which adopts the following technical solution: it includes a spray gun, a mixing unit, a main agent color-changing supply unit, and a curing agent color-changing supply unit. The main agent color-changing supply unit and the curing agent color-changing supply unit are connected to the mixing unit through pipes, and the output end of the mixing unit is connected to the input end of the spray gun. The main agent color-changing supply unit is bolted to the end of the main agent cleaning module. The main agent cleaning module has an external cleaning interface on one side of its top for connecting an external cleaning agent pipeline, and a cup head cleaning interface on the other side of its top for quickly connecting a cup head cleaning pipeline. Both the external cleaning interface and the cup head cleaning interface are equipped with quick-connect buckles.

[0010] Optionally, the top two ends of the main agent cleaning module are respectively provided with a main agent cleaning agent inlet connector and a main agent cleaning air inlet connector.

[0011] Optionally, the main agent color-changing supply unit is provided with a first cup head solvent cleaning gas control connector and a second cup head gas cleaning agent gas control connector at both ends of its top.

[0012] Optionally, the main body of the curing agent color-changing supply unit is connected to a curing agent cleaning module, and the main body of the main agent color-changing supply unit is connected to a main agent cleaning module.

[0013] Optionally, the input end of the mixing unit is connected to the output ends of the main agent color-changing supply unit and the curing agent color-changing supply unit via pipes.

[0014] Optionally, the mixing unit includes a mixing module, an oil inlet module, a main agent color changing module, a cleaning module, and a fixing module. The oil inlet module, the main agent color changing module, the cleaning module, and the fixing module are sequentially installed at the input end of the mixing module. The output end of the mixing module is connected to a mixing aid pipe, and the output end of the mixing aid pipe is connected to the input end of the spray gun.

[0015] Optionally, the mixing aid pipe includes a rigid pipe and a helical blade. The helical blade is located inside the rigid pipe, and the inner diameter of the rigid pipe is the same as the outer diameter of the helical blade. The two ends of the helical blade are welded and fixed to the inner wall of the rigid pipe. The mixing unit is made of titanium alloy.

[0016] In summary, this utility model includes the following beneficial technical effects: A module with a head cleaning function is added to the main agent color-changing supply unit in a traditional spraying color-changing system. The main agent cleaning module of the traditional main agent color-changing supply unit, as well as the module with the added head cleaning function, are equipped with external cleaning interfaces and head cleaning interfaces for easier installation, facilitating pipe connection and disassembly. Quick-connect clips are also provided to further prevent pipe bursts. The main agent cleaning module is connected to a module with a head cleaning function, allowing a direct pipe to be led out from the main agent color-changing valve assembly to clean the rotary cup head. This makes the overall structure compact, reduces the need for external head cleaning valve assemblies, and avoids excessive pipe connections. The mixing unit, made of titanium alloy, is significantly lighter than traditional stainless steel and other materials. The addition of the main agent color-changing module to the mixing unit shortens the color-changing pipeline, speeds up the color-changing time, and reduces the number of pipelines required for color-changing, thus reducing paint and solvent waste. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the pipeline flow in an embodiment of this utility model; Figure 2 This is a schematic diagram of the hybrid unit in an embodiment of this utility model; Figure 3 This is a schematic diagram of the main agent color-changing supply unit in an embodiment of this utility model; Figure 4 This is a schematic diagram of the curing agent color-changing supply unit in an embodiment of this utility model.

[0018] Figure 5 This is a schematic diagram of the main agent cleaning module and the cup head cleaning function in an embodiment of this utility model.

[0019] Reference numerals: 1. Spray gun; 2. Mixing unit; 21. Mixing module; 22. Oil inlet module; 23. Main agent color changing module; 24. Cleaning module; 25. Fixing module; 201. Rigid pipe; 202. Spiral blade; 3. Main agent color changing supply unit; 301. Main agent cleaning module; 302. Second cup head air cleaning agent control connector; 31. External cleaning interface; 32. Cup head cleaning interface; 304. Main agent cleaning agent inlet connector; 305. Main agent cleaning air inlet connector; 307. First cup head solvent cleaning air control connector; 4. Curing agent color changing supply unit; 401. Curing agent cleaning module. Detailed Implementation

[0020] The following is in conjunction with the appendix Figure 1-4 The present invention will be described in further detail below.

[0021] This utility model discloses a spray painting color-changing system. For example... Figure 1 and Figure 5The spray gun 1, acting as the final spraying tool, receives the mixed paint output from the mixing unit 2 and completes the spraying operation. The mixing unit 2 is connected to the main agent color-changing supply unit 3 and the hardener color-changing supply unit 4 via pipes, ensuring that the main agent and hardener are uniformly mixed after being input into the mixing unit 2 in the correct proportions. The main agent color-changing supply unit 3 provides the main agent and transports it to the mixing unit 2 via pipes; the main agent color-changing supply unit 3 also provides the main agent and transports it to the mixing unit 2 via pipes. To achieve rapid color-changing, a main agent cleaning module 301 is bolted to the tail end of the main agent color-changing supply unit 3. The main agent cleaning module 301 has an external cleaning interface 31 at its top for quick connection of the external cleaning agent pipeline; a cup-head cleaning interface 32 is located on the other side of the top of the main agent cleaning module 301 for quick connection of the cup-head cleaning pipeline. Both the external cleaning interface 31 and the cup-head cleaning interface 32 are equipped with quick-connect clips, which effectively prevent pipeline bursting under high pressure.

[0022] Please see Figure 2 The mixing unit 2 includes a mixing module 21, an oil inlet module 22, a main agent color-changing module 23, a cleaning module 24, and a fixing module 25. The oil inlet module 22, main agent color-changing module 23, cleaning module 24, and fixing module 25 are sequentially installed at the input end of the mixing module 21. The output end of the mixing module 21 is connected to a mixing aid pipe, and the output end of the mixing aid pipe is connected to the input end of the spray gun 1. The mixing aid pipe includes a rigid pipe 201 and a spiral blade 202. The spiral blade 202 is located inside the rigid pipe 201, and the inner diameter of the rigid pipe 201 is the same as the outer diameter of the spiral blade 202. Both ends of the spiral blade 202 are welded and fixed to the inner wall of the rigid pipe 201. This structural design ensures that the coating is fully mixed during transportation, thereby improving the spraying quality. The mixing unit 2 is made of titanium alloy, which has a lower density and better corrosion resistance than traditional stainless steel, significantly reducing the overall weight of the device.

[0023] Please see Figures 3-5 The main agent color-changing supply unit 3 has a curing agent cleaning module 301 bolted to its tail end. The top of the main agent cleaning module 301 has a main agent cleaning agent inlet connector 304 and a main agent cleaning air inlet connector 305 at both ends for connecting the cleaning agent and cleaning gas. The top of the main agent color-changing supply unit 3 also has a first cup head solvent cleaning gas control connector 307 and a second cup head gas cleaning agent gas control connector 302 at both ends for connecting the solvent and gas required for cup head cleaning. The main body of the curing agent color-changing supply unit 4 is connected to the curing agent cleaning module 401, and the main body of the main agent color-changing supply unit 3 is connected to the main agent cleaning module 301, facilitating quick disassembly and maintenance of the main agent cleaning module 301 and the curing agent cleaning module 401.

[0024] Please see Figure 5The main agent cleaning module 301 has a main agent cleaning agent inlet connector 304 and a main agent cleaning air inlet connector 305 at its top ends. These two connectors are used to connect the cleaning agent and cleaning gas, respectively. The cleaning agent and cleaning gas enter the main agent color-changing supply unit 3 through the main agent cleaning module 301 to complete the cleaning operation. The cup head cleaning module 302 has a first cup head solvent cleaning gas control connector 307 and a second cup head gas cleaning agent gas control connector 302 at its top ends. These two connectors are used to connect the solvent and gas, respectively. The solvent and gas enter the rotating cup head through the cup head cleaning module 302 to complete the cleaning operation. The main agent cleaning module 301 and the cup head cleaning module 302 are bolted to the tail end of the main agent color-changing supply unit 3 for easy disassembly and maintenance. The modular design also makes the cleaning operation more convenient.

[0025] The implementation principle of the spray coating color-changing system according to this utility model embodiment is as follows: When spraying is required, the main agent color-changing supply unit 3 and the curing agent color-changing supply unit 4 respectively transport the main agent and curing agent to the mixing unit 2 through pipelines. The mixing module 21 mixes the main agent and curing agent according to a preset ratio to ensure the uniformity of the coating. The oil inlet module 22 introduces oily substances for lubrication or auxiliary cleaning, and the cleaning module 24 is used to clean the inside of the mixing unit 2 to prevent residues from affecting subsequent spraying operations. The main agent color-changing module 23 shortens the time required for main agent color changing by optimizing the internal flow channel design, and at the same time reduces the length of pipelines that need to be cleaned during the color-changing process. The spiral blades 202 in the auxiliary mixing pipeline are welded and fixed to the inner wall of the rigid pipeline 201 to ensure that the coating is fully mixed during the transportation process, thereby improving the spraying quality.

Claims

1. A spray painting color-changing system, characterized in that, It includes a spray gun (1), a mixing unit (2), a main agent color-changing supply unit (3), and a curing agent color-changing supply unit (4). The main agent color-changing supply unit (3) and the curing agent color-changing supply unit (4) are connected to the mixing unit (2) through pipes. The output end of the mixing unit (2) is connected to the input end of the spray gun (1). The main agent color-changing supply unit (3) is bolted to the end of the main agent cleaning module (301). The main agent cleaning module (301) has an external cleaning interface (31) for external cleaning agent pipeline to be inserted on one side of the top, and a cup head cleaning interface (32) for cup head cleaning pipeline to be quickly inserted on the other side of the top. Both the external cleaning interface (31) and the cup head cleaning interface (32) are equipped with quick-connect buckles.

2. The spray painting color-changing system according to claim 1, characterized in that: The main agent cleaning module (301) is provided with a main agent cleaning agent inlet connector (304) and a main agent cleaning air inlet connector (305) at both ends of the top.

3. The spray painting color-changing system according to claim 2, characterized in that: The main agent color-changing supply unit (3) is provided with a first cup head solvent cleaning gas control connector (307) and a second cup head gas cleaning agent gas control connector (302) at both ends of the top.

4. The spray painting color-changing system according to claim 3, characterized in that: The main body of the curing agent color-changing supply unit (4) is connected to the curing agent cleaning module (401), and the main body of the main agent color-changing supply unit (3) is connected to the main agent cleaning module (301).

5. A spray painting color-changing system according to claim 4, characterized in that: The input end of the mixing unit (2) is connected to the output ends of the main agent color-changing supply unit (3) and the curing agent color-changing supply unit (4) through pipes.

6. A spray painting color-changing system according to claim 5, characterized in that: The mixing unit (2) includes a mixing module (21), an oil inlet module (22), a main agent color-changing module (23), a cleaning module (24), and a fixing module (25). The oil inlet module (22), the main agent color-changing module (23), the cleaning module (24), and the fixing module (25) are installed sequentially at the input end of the mixing module (21). The output end of the mixing module (21) is connected to a mixing aid pipe, and the output end of the mixing aid pipe is connected to the input end of the spray gun (1).

7. A spray painting color-changing system according to claim 6, characterized in that: The mixing pipe includes a rigid pipe (201) and a spiral blade (202). The spiral blade (202) is located inside the rigid pipe (201), and the inner diameter of the rigid pipe (201) is the same as the outer diameter of the spiral blade (202). The two ends of the spiral blade (202) are welded and fixed to the inner wall of the rigid pipe (201). The mixing unit (2) is made of titanium alloy material.

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