Quantitative bead running type fast color changing system bead running launching station and use method thereof

Abstract

The application relates to the technical field of automatic coating, in particular to a quantitative bead walking type quick color changing system bead walking launching station and a use method thereof. The quantitative bead walking type quick color changing system bead walking launching station comprises a quantitative bead walking launching station valve block, one end of the quantitative bead walking launching station valve block is connected with a main pipe joint used for connecting a main pipeline, first bead walking, second bead walking and third bead walking are sequentially arranged in the quantitative bead walking launching station valve block from one end close to the main pipe joint to one end far from the main pipe joint, the quantitative bead walking launching station valve block is provided with a solvent supply unit used for cleaning the main pipeline, a paint supply unit, a gas supply unit used for pushing the bead walking to move and a waste liquid discharge unit, solvent is filled between the first bead walking and the second bead walking, and paint is filled between the second bead walking and the third bead walking. The application has the effects of realizing accurate paint supply and reducing the solvent usage amount during paint spraying, thereby saving the production cost.

Description

Technical Field

[0001] This application relates to the field of automated coating technology, and in particular to a ball bearing launcher station for a quantitative ball bearing rapid color-changing system for paint supply. Background Technology

[0002] In the automotive painting industry, as users pursue personalization and higher aesthetic standards, car manufacturers are constantly developing new colors that customers like in order to meet the needs of vehicle users. This has led to an increasing number of colors being used by car manufacturers and their supporting parts manufacturers.

[0003] Therefore, ball-bearing rapid color-change paint supply systems are widely used in modern automotive painting processes. A single ball-bearing rapid color-change paint supply system can spray multiple colors, and each system is relatively small in size. We can group the paints according to their viscosity, and paints of similar viscosity can share a single system. Currently, the painting systems used in the automotive field are mainly single-ball-bearing systems, which primarily consist of a ball-bearing transmitter station, a ball-bearing receiver station, and the main pipeline connecting the transmitter and receiver stations.

[0004] The main pipe single-ball bearing system described in related technologies, while solving the problems of rapid paint supply and color switching for the painting robot, requires the entire main pipe to be filled with paint during paint spraying. The large amount of paint required means that the amount of paint prepared is far greater than the amount actually used. In particular, some small colors require very little paint, and the remaining paint is easily contaminated or even expired after recycling, resulting in resource waste and increased production costs. Moreover, when changing colors, a large amount of solvent is required to fill the entire main pipe for cleaning, which further increases production costs. Summary of the Invention

[0005] In order to achieve precise paint supply and reduce solvent usage during paint spraying, thereby saving production costs, this application provides a quantitative ball bearing rapid color change system ball bearing launcher and its usage method.

[0006] In the first aspect, this application provides a ball bearing transmitter station for a quantitative ball bearing rapid color-changing system, which adopts the following technical solution:

[0007] A quantitative ball bearing rapid color-changing system ball bearing launcher station includes a quantitative ball bearing launcher station valve block. One end of the quantitative ball bearing launcher station valve block is connected to a main pipe connector for connecting to a main pipeline. Inside the quantitative ball bearing launcher station valve block, a first ball bearing, a second ball bearing, and a third ball bearing are sequentially arranged from the end closest to the main pipe connector to the end furthest from the main pipe connector. The quantitative ball bearing launcher station valve block is provided with a solvent supply unit for cleaning the main pipeline, a paint supply unit, a gas supply unit for propelling the ball bearings, and a waste liquid discharge unit. The solvent is filled between the first ball bearing and the second ball bearing, and the paint is filled between the second ball bearing and the third ball bearing.

[0008] By adopting the above technical solution, multiple functional units are set on the valve block of the quantitative ball bearing launcher. Solvent is filled between the first and second balls to clean and lubricate the main pipeline, while paint is filled between the second and third balls. In this way, filling the main pipeline with solvent between the first and second balls achieves cleaning, eliminating the need to completely fill the main pipeline with solvent, thus reducing solvent usage and improving cleaning efficiency. The required amount of paint is filled between the second and third balls, and the paint is metered and supplied by controlling the second and third balls, eliminating the need to completely fill the main pipeline before spraying. This reduces paint waste and saves production costs.

[0009] Optionally, the solvent supply unit includes a first solvent inlet for filling the front end of the first ball bearing with solvent, a first solvent valve for controlling the opening and closing of the first solvent inlet, a second solvent inlet for filling the space between the first ball bearing and the second ball bearing with solvent, a second solvent valve for controlling the opening and closing of the second solvent inlet, a third solvent inlet for filling the rear end of the third ball bearing with solvent, and a third solvent valve for controlling the opening and closing of the third solvent inlet.

[0010] By adopting the above technical solution, when the valve block of the quantitative ball bearing transmitter station is placed vertically and the main pipe connector is at the top, the third solvent inlet and the second solvent inlet are both located at the top, while the first solvent inlet is located at the bottom. In this way, by setting the three solvent inlets at different positions, it is convenient to inject solvent into different locations to achieve different functions.

[0011] Optionally, it also includes a first solvent series pipe and a second solvent series pipe, wherein the first solvent inlet and the third solvent inlet are connected through the first solvent series pipe, and the first solvent inlet and the second solvent inlet are connected through the second solvent series pipe.

[0012] By adopting the above technical solution, solvent can be supplied to three solvent inlets simultaneously through only one solvent supply source, which can reduce the number of solvent supply sources and save costs.

[0013] Optionally, the quantitative ball-operated transmitter valve block is further provided with a first proximity switch for detecting the first ball, a second proximity switch for detecting the second ball, and a third proximity switch for detecting the third ball, wherein the first proximity switch, the second proximity switch, and the third proximity switch are all coupled to a controller.

[0014] By adopting the above technical solution, the first proximity switch, the second proximity switch and the third proximity switch are all coupled to a controller. According to the working requirements, parameters are set in the controller to realize the control of different action units, thereby completing different operating actions. This can realize automated operation, further improve the spraying efficiency, and at the same time greatly reduce labor intensity.

[0015] Optionally, the paint supply unit includes a paint inlet and a paint valve for controlling the opening and closing of the paint inlet, and the paint inlet is equipped with a flow meter.

[0016] By adopting the above technical solution, a flow meter is installed at the paint inlet to facilitate the calculation of the total amount of paint entering the main pipeline, thereby ensuring the accuracy of the paint supply.

[0017] Optionally, the waste liquid discharge unit includes a first waste liquid outlet and a first waste liquid valve for controlling the opening and closing of the first waste liquid outlet, a second waste liquid outlet and a second waste liquid valve for controlling the opening and closing of the second waste liquid outlet, and a third waste liquid outlet and a third waste liquid valve for controlling the opening and closing of the third waste liquid outlet.

[0018] By adopting the above technical solution, the first waste liquid outlet, the second waste liquid outlet, and the third waste liquid outlet are set up separately, so as to facilitate the collection of waste liquid from different locations according to work needs and increase convenience.

[0019] Optionally, the quantitative ball bearing launcher valve block is provided with multiple valve block plugs.

[0020] By adopting the above technical solution, multiple valve block plugs are connected to the main pipeline. After unscrewing the valve block plugs, it is convenient to replace the first ball bearing, the second ball bearing, and the third ball bearing.

[0021] Secondly, this application provides a method for using the ball bearing transmitter station of a quantitative ball bearing rapid color-changing system, which adopts the following implementation steps:

[0022] Step 1: Fill the front end of the first ball bearing with solvent;

[0023] Step 2: Fill the space between the first ball bearing and the second ball bearing with solvent;

[0024] Step 3: Fill the space between the second ball bearing and the third ball bearing with paint;

[0025] Step 4: Paint spraying;

[0026] Step 5: The third ball bearing returns to the launching station;

[0027] Step Six: Recycle the paint;

[0028] Step 7: Discharge the solvent;

[0029] Step 8: Depressurize;

[0030] Step 9: Close all valves to complete the paint spraying.

[0031] By adopting the above technical solution, during use, solvent is first filled at the front end of the first ball bearing, then solvent is filled between the first and second balls bearings, and then paint is filled between the second and third balls bearings. Paint is then sprayed. After spraying, the third ball bearing is driven back to the launching station to recover the paint, then the solvent is discharged and pressure is released. Finally, the rear end of the third ball bearing is cleaned. In this way, filling the space between the first and second balls bearings with solvent is sufficient to clean the main pipeline, eliminating the need to completely fill the main pipeline with solvent, thus reducing solvent usage and improving cleaning efficiency. Filling the space between the second and third balls bearings with the required amount of paint allows for metered paint supply, reducing waste. The third ball bearing is then moved by gas to deliver the paint. This design can accurately provide the amount of paint, reduce the use of cleaning solvent, and achieve faster pipeline cleaning, thereby improving spraying efficiency and saving production costs.

[0032] In summary, this application includes at least one of the following beneficial technical effects:

[0033] This application employs a novel integrated valve block structure design, utilizing three metering rollers to achieve both pipe cleaning and precise paint filling. The software used in this application employs an automated control mode, allowing process parameters to be adjusted in real-time based on actual filling results. Furthermore, with the three metering rollers, the front and middle rollers ensure precise paint supply, while the middle and rear rollers ensure pipe cleaning. This design accurately delivers the paint volume, reduces the use of cleaning solvents, and enables faster pipe cleaning, thereby improving spraying efficiency and saving production costs. Attached Figure Description

[0034] Figure 1This is an internal sectional view of the quantitative ball bearing launcher valve block in this application;

[0035] Figure 2 This is a front view of the ball bearing transmitter station of the quantitative ball bearing rapid color-changing system in this application;

[0036] Figure 3 This is a side view of the ball-emitting station of the quantitative ball-type rapid color-changing system in this application;

[0037] Figure 4 This is a schematic diagram of the ball bearing transmitter station of the quantitative ball bearing rapid color-changing system in this application;

[0038] Figure 5 This is a schematic diagram of the ball bearing transmitter station of the quantitative ball bearing rapid color-changing system in this application;

[0039] Figure 6 This is a flowchart of the usage of the ball-emitting station of the quantitative ball-type rapid color-changing system in this application.

[0040] Explanation of reference numerals in the attached diagram: 1. Quantitative ball bearing transmitter valve block; 2. Main pipe connector; 3. First ball bearing; 4. Second ball bearing; 5. Third ball bearing; 6. Solvent supply unit; 601. Third solvent valve; 602. Second solvent valve; 603. First solvent valve; 604. Third solvent inlet; 605. Second solvent inlet; 606. First solvent inlet; 7. Paint supply unit; 701. Paint valve; 702. Paint inlet; 8. Gas supply unit; 801. 802. Gas valve; 903. Gas inlet; 904. Waste liquid discharge unit; 905. First waste liquid valve; 906. Second waste liquid valve; 907. Third waste liquid valve; 908. First waste liquid outlet; 909. Second waste liquid outlet; 9000. Third waste liquid outlet; 10. First solvent series pipe; 11. Solvent series pipe; 12. Control unit; 1201. First proximity switch; 1202. Second proximity switch; 1203. Third proximity switch; 13. Valve block plug. Detailed Implementation

[0041] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0042] This application discloses a ball bearing transmitter station for a quantitative ball bearing rapid color-changing system, referring to... Figure 1 and Figure 2The ball bearing launcher station of the quantitative ball bearing rapid color change system for paint supply includes a quantitative ball bearing launcher station valve block 1. One end of the quantitative ball bearing launcher station valve block 1 is connected to a main pipe connector 2 for connecting to the main pipeline. Inside the quantitative ball bearing launcher station valve block 1, from the end closest to the main pipe connector 2 to the end furthest from the main pipe connector 2, a first ball bearing 3, a second ball bearing 4, and a third ball bearing 5 are arranged in sequence. The quantitative ball bearing launcher station valve block 1 is equipped with a solvent supply unit 6, a paint supply unit 7, a gas supply unit 8, and a waste liquid discharge unit 9.

[0043] Solvent is filled between the first ball bearing 3 and the second ball bearing 4 to clean and lubricate the main pipe, while paint is filled between the second ball bearing 4 and the third ball bearing 5. In this way, filling the space between the first ball bearing 3 and the second ball bearing 4 with solvent is sufficient to clean the main pipe, eliminating the need to completely fill the pipe with solvent, thus reducing solvent usage and improving cleaning efficiency. Filling the space between the second ball bearing 4 and the third ball bearing 5 with the required amount of paint allows for metered paint supply, reducing paint waste and saving production costs.

[0044] Specifically, refer to Figure 2 and Figure 3 The solvent supply unit 6 includes a first solvent inlet 606 and a first solvent valve 603 for controlling the opening and closing of the first solvent inlet 606, a second solvent inlet 605 and a second solvent valve 602 for controlling the opening and closing of the second solvent inlet 605, a third solvent inlet 604 and a third solvent valve 601 for controlling the opening and closing of the third solvent inlet 604. In this embodiment, the first solvent valve 603, the second solvent valve 602 and the third solvent valve 601 are all installed on the side of the same metering ball launching station valve block 1. When the metering ball launching station valve block 1 is placed vertically and the main pipe connector 2 is located above, the first solvent valve 603 is located at the bottom, the third solvent valve 601 is located at the top, and the second solvent valve 602 is located below the third solvent valve 601.

[0045] The third solvent inlet 604 is arranged adjacent to the third solvent valve 601, with the first solvent inlet 606 and the second solvent inlet 605 located on the opposite side of the third solvent inlet 604. Specifically, when the metering ball valve block 1 is placed vertically and the main pipe connector 2 is on top, both the third solvent inlet 604 and the second solvent inlet 605 are at the top, while the first solvent inlet 606 is at the bottom. This arrangement of three solvent inlets at different locations facilitates the injection of solvent into different locations to achieve different functions.

[0046] Reference Figure 2 and Figure 3A first solvent series pipe 10 connects the first solvent inlet 606 and the third solvent inlet 604, and a second solvent series pipe 11 connects the first solvent inlet 606 and the second solvent inlet 605. In this way, the first solvent inlet 606, the second solvent inlet 605, and the third solvent inlet 604 are connected in series, allowing solvent to be supplied to all three inlets simultaneously through a single solvent supply source. This reduces the number of solvent supply sources required and saves costs.

[0047] Reference Figure 2 and Figure 3 The paint supply unit 7 includes a paint inlet 702 and a paint valve 701 for controlling the opening and closing of the paint inlet 702. When the metering ball valve block 1 is placed vertically and the main pipe connector 2 is above, the paint valve 701 is located below the second solvent valve 602. The paint inlet 702 is located on the same side as the first solvent inlet 606 and the second solvent inlet 605, and is located below the second solvent inlet 605. By controlling the paint valve 701, a metering supply of paint to the main pipeline can be achieved. To facilitate the calculation of the total amount of paint entering the main pipeline, a flow meter (not shown in the figure) is installed at the paint inlet 702 to ensure the accuracy of the paint supply.

[0048] Reference Figure 4 and Figure 5 The gas supply unit 8 includes a gas inlet 802 and a gas valve 801 for controlling the opening and closing of the gas inlet 802. When the metering ball bearing launcher valve block 1 is placed vertically and the main pipe connector 2 is located above, the gas valve 801 is located below the paint valve 701, and the gas inlet 802 and the third solvent inlet 604 are located on the same side and below the third solvent inlet 604. To ensure sufficient gas supply, high-pressure gas is used in this embodiment, and a pressure gauge (not shown in the figure) is provided at the gas inlet 802 to ensure that the nozzle can meet the spraying pressure during spraying, while also ensuring the safety of the pressure value inside the main pipeline.

[0049] Reference Figure 4 and Figure 5The waste liquid discharge unit 9 includes a first waste liquid outlet 904 and a first waste liquid valve 901 for controlling the opening and closing of the first waste liquid outlet 904, a second waste liquid outlet 905 and a second waste liquid valve 902 for controlling the opening and closing of the second waste liquid outlet 905, a third waste liquid outlet 906 and a third waste liquid valve 903 for controlling the opening and closing of the third waste liquid outlet 906. The first waste liquid valve 901, the second waste liquid valve 902, and the third waste liquid valve 903 are all located on the opposite side of the first solvent valve 601. The first waste liquid outlet 904, the second waste liquid outlet 905, the second waste liquid outlet 906, the third waste liquid outlet 906, the third waste liquid outlet 904, the third waste liquid outlet 905, the third waste liquid outlet 906, and the third waste liquid outlet 906 are all located on the opposite side of the first solvent valve 601. Both waste liquid outlet 905 and the third waste liquid outlet 906 are located on the same side as gas inlet 802. When the metering ball valve block 1 is placed vertically and the main pipe connector 2 is on top, the first waste liquid valve 901, the second waste liquid valve 902, and the third waste liquid valve 903 are arranged sequentially from top to bottom. Similarly, the first waste liquid outlet 904, the second waste liquid outlet 905, and the third waste liquid outlet 906 are also arranged sequentially from top to bottom, with the first waste liquid outlet 904 and the second waste liquid outlet 905 located between the third solvent inlet 604 and gas inlet 802. By setting three waste liquid outlets, it is ensured that the waste liquid inside the main pipeline can be completely discharged, preventing waste liquid from contaminating the paint.

[0050] The first waste liquid outlet 904, the second waste liquid outlet 905, and the third waste liquid outlet 906 are connected in series, and a second connecting pipe 11 connects the first waste liquid outlet 904 and the third waste liquid outlet 906. In this way, the three waste liquid outlets only need to be connected to one waste liquid tank to facilitate the collection of waste liquid.

[0051] Reference Figure 4 and Figure 5 The quantitative ball bearing transmitter valve block 1 is also equipped with a detection unit. The detection unit includes a first proximity switch 1201 for detecting the first ball bearing 3, a second proximity switch 1202 for detecting the second ball bearing 4, and a third proximity switch 1203 for detecting the third ball bearing 5. When the quantitative ball bearing transmitter valve block 1 is placed vertically and the main pipe connector 2 is located above, the first proximity switch 1201, the third proximity switch 1203 and the first waste liquid valve 901 are located on the same side, and the second proximity switch 1202 and the paint inlet 702 are located on the same side. The first proximity switch 1201 is located at the top, the third proximity switch 1203 is located between the second waste liquid valve 902 and the third waste liquid valve 903, and the second proximity switch 1202 is located between the second solvent inlet 605 and the paint inlet 702.

[0052] Of course, the valves and their corresponding inlet positions in this embodiment can be adjusted as long as the corresponding control relationship and working requirements are met. In this embodiment, no further details will be provided.

[0053] Reference Figure 2Multiple valve block plugs 13 are provided on the valve block 1 of the quantitative ball transmitter station to facilitate the replacement of the first ball 3, the second ball 4 and the third ball 5.

[0054] Reference Figure 4 and Figure 5 The first proximity switch 1201, the second proximity switch 1202 and the third proximity switch 1203 are all coupled to a controller (not shown in the figure). The three waste liquid valves, the three solvent valves, the gas valve 801 and the paint valve 701 are all coupled to the controller. In this embodiment, the controller can be a PLC controller. According to the work requirements, the parameters are set in the controller to realize automated operation, further improve the spraying efficiency, and at the same time greatly reduce the labor intensity.

[0055] The implementation principle of the quantitative ball bearing rapid color-changing system ball bearing transmitter station in this application embodiment is as follows: This application uses three quantitative ball bearings. A controller controls the opening and closing of each valve. Solvent is filled between the first ball bearing 3 and the second ball bearing 4 to clean and lubricate the main pipeline. Paint is filled between the second ball bearing 4 and the third ball bearing 5. Thus, filling the main pipeline with solvent between the first ball bearing 3 and the second ball bearing 4 achieves cleaning, eliminating the need to completely fill the main pipeline with solvent, reducing solvent usage and improving cleaning efficiency. Filling the required amount of paint between the second ball bearing 4 and the third ball bearing 5 achieves metered paint supply, reducing paint waste. Gas propels the third ball bearing 5 to deliver the paint. This design can accurately provide the amount of paint, reduce the use of cleaning solvent, and achieve faster pipeline cleaning, thereby improving spraying efficiency and saving production costs.

[0056] This application also discloses a method for using a ball bearing transmitter station in a quantitative ball bearing rapid color-changing system. (Refer to...) Figure 5 and Figure 6 The usage method of the quantitative ball-type rapid color-changing system ball-emitting station includes the following steps:

[0057] Step 1: Fill the front end of the first ball bearing 3 with solvent;

[0058] Open the waste liquid valve in the receiving station, the third solvent valve 601 is opened, the third solvent inlet 604 is connected, and the solvent fills the front end of the first ball bearing 3 to achieve the purpose of lubrication and at the same time to clean the main pipeline.

[0059] Step 2: Fill the space between the first ball bearing 3 and the second ball bearing 4 with solvent;

[0060] The third solvent valve 601 is closed, the second solvent valve 602 is opened, and the second solvent inlet 605 is connected. The solvent is filled between the first ball bearing 3 and the second ball bearing 4 to achieve the purpose of cleaning the main pipe and ensure that the main pipe will not be contaminated and produce color difference after the paint is filled.

[0061] Step 3: Fill the space between the second ball bearing 4 and the third ball bearing 5 with paint;

[0062] The second solvent valve 602 is closed, the paint valve 701 is opened, the paint inlet 702 is connected, and the paint is filled between the second ball bearing 4 and the third ball bearing 5. The paint is quantitatively supplied using a flow meter. As the paint increases, the solvent at the front end of the first ball bearing 3 flows out from the waste liquid outlet of the receiving station. When the first ball bearing 3 is detected by the proximity switch of the corresponding receiving station, the aforementioned waste liquid outlet of the receiving station is closed, and another waste liquid outlet of the receiving station is opened to allow the solvent between the first ball bearing 3 and the second ball bearing 4 to flow out.

[0063] Step 4: Paint spraying;

[0064] When the paint filling amount reaches the preset total, the paint valve 701 and the other waste liquid outlet of the receiving station are closed, the first solvent valve 603 is opened, and the first solvent inlet 606 is connected. Solvent is filled at the rear end of the third ball bearing 5 to serve as a lubricant. Then the first solvent valve 603 is closed, the gas valve 801 is opened, and gas rushes in, pushing the third ball bearing 5 to move away from the launching station. Under high pressure, the paint obtains spraying pressure from the nozzle of the spraying station robot to achieve spraying.

[0065] Step 5: The third ball returns to the launch station;

[0066] After the spraying task is completed, the gas valve 801 closes, the second waste liquid valve 902 opens, and the second waste liquid outlet 905 is connected to achieve pressure relief. Simultaneously, the receiving station fills the space between the first ball bearing 3 and the second ball bearing 4 with solvent, and also fills the front end of the first ball bearing 3 with solvent. Then, gas is introduced from the receiving station, propelling the first ball bearing 3, the second ball bearing 4, and the third ball bearing 5 towards the transmitting station. Filling the space between the first ball bearing 3 and the second ball bearing 4 with solvent achieves the purpose of cleaning the main pipeline, thereby improving cleaning efficiency and shortening the overall operation time. The solvent at the front end of the first ball bearing 3 further cleans the main pipeline.

[0067] Step Six: Recycle the paint;

[0068] Because paint may be lost during transport, the total amount of paint should be slightly greater than the required amount to ensure the painting task is completed. When the third proximity switch 1203 detects the third ball bearing 5, the second waste liquid valve 902 closes, the paint valve 701 opens, and the paint inlet 702 is connected. At this time, low-pressure gas is introduced from the receiving station, pushing the first ball bearing 3 and the second ball bearing 4 to move, thus recovering the paint between the second ball bearing 4 and the third ball bearing 5. Using low-pressure gas instead of conventional gas ensures that the paint slowly flows back to the paint bucket while maintaining stable pressure in the main pipeline.

[0069] Step 7: Discharge the solvent;

[0070] When the second proximity switch 1202 detects the second ball bearing 4, the paint valve 701 closes and the first waste liquid valve 901 opens, and the solvent between the first ball bearing 3 and the second ball bearing 4 is discharged through the first waste liquid outlet 904.

[0071] Step 8: Depressurize;

[0072] The waste liquid outlet of the receiving station is opened, connecting the waste liquid outlet to the main pipeline to achieve pressure relief.

[0073] Step 9: Clean the rear end of the third ball bearing 5;

[0074] The first solvent valve 603 is opened, connecting the first solvent inlet 606. At the same time, the second waste liquid valve 902 is opened, connecting the second waste liquid outlet 905, so as to achieve cleaning of the rear end of the third ball bearing 5.

[0075] Step 10: Close all valves to complete the spraying process.

[0076] The implementation principle of the quantitative ball bearing rapid color-changing system ball bearing transmitter station in this application embodiment is as follows: In use, solvent is first filled at the front end of the first ball bearing 3, then solvent is filled between the first ball bearing 3 and the second ball bearing 4, then paint is filled between the second ball bearing 4 and the third ball bearing 5, and then paint spraying is performed. After spraying is completed, the third ball bearing 5 is driven back to the transmitter station to recover the paint, then the solvent is discharged and pressure is released, and finally the rear end of the third ball bearing 5 is cleaned. In this way, filling the space between the first ball bearing 3 and the second ball bearing 4 with solvent can achieve the cleaning of the main pipeline, eliminating the need to completely fill the main pipeline with solvent, thus reducing solvent usage and improving cleaning efficiency. Filling the space between the second ball bearing 4 and the third ball bearing 5 with the required amount of paint enables metered paint supply, reducing paint waste. Then, the third ball bearing 5 is moved by gas to achieve paint delivery. This design structure can accurately provide the amount of paint, reduce the use of cleaning solvent, and achieve faster pipeline cleaning, thereby improving spraying efficiency and saving production costs.

[0077] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A quantitative bead walking type fast color changing system bead walking launching station, characterized in that: The quantitative bead launching station valve block (1) is connected with a main pipe joint (2) for connecting a main pipe at one end, and is sequentially provided with a first bead (3), a second bead (4) and a third bead (5) inside from the end close to the main pipe joint (2) to the end away from the main pipe joint (2), and is provided with a solvent supply unit (6) for cleaning the main pipe, a paint supply unit (7), a gas supply unit (8) for pushing the beads to move, and a waste liquid discharge unit (9), wherein solvent is filled between the first bead (3) and the second bead (4), and paint is filled between the second bead (4) and the third bead (5); The solvent supply unit (6) comprises a first solvent inlet (606) for filling solvent to the front end of the first bead (3), a first solvent valve (603) for controlling the opening and closing of the first solvent inlet (606), a second solvent inlet (605) for filling solvent between the first bead (3) and the second bead (4), a second solvent valve (602) for controlling the opening and closing of the second solvent inlet (605), a third solvent inlet (604) for filling solvent to the rear end of the third bead (5), and a third solvent valve (601) for controlling the opening and closing of the third solvent inlet (604); Further comprising a first solvent series pipe (10) and a second solvent series pipe (11), the first solvent series pipe (10) is connected in series between the first solvent inlet (606) and the third solvent inlet (604), and the second solvent series pipe (11) is connected in series between the first solvent inlet (606) and the second solvent inlet (605).

2. The quantitative bead walking fast change color system bead walking launching station according to claim 1, characterized in that: The quantitative bead launching station valve block (1) is further provided with a first proximity switch (1201) for detecting the first bead (3), a second proximity switch (1202) for detecting the second bead (4), and a third proximity switch (1203) for detecting the third bead (5), and the first proximity switch (1201), the second proximity switch (1202) and the third proximity switch (1203) are all coupled with a controller.

3. The quantitative bead walking fast change color system bead walking launching station according to claim 1, characterized in that: The paint supply unit (7) comprises a paint inlet (702) and a paint valve (701) for controlling the opening and closing of the paint inlet (702), and the paint inlet (702) is provided with a flow meter.

4. The quantitative bead walking fast change color system bead walking launching station according to claim 1, characterized in that: The waste liquid discharge unit (9) comprises a first waste liquid outlet (904) and a first waste liquid valve (901) for controlling the opening and closing of the first waste liquid outlet (904), a second waste liquid outlet (905) and a second waste liquid valve (902) for controlling the opening and closing of the second waste liquid outlet (905), and a third waste liquid outlet (906) and a third waste liquid valve (903) for controlling the opening and closing of the third waste liquid outlet (906).

5. The quantitative bead walking fast change color system bead walking launch station of claim 1, wherein: A plurality of valve block plugs (13) are arranged on the quantitative bead launching station valve block (1).

6. A method for using the quantitative bead walking type rapid color changing system bead walking launching station according to any one of claims 1-5, characterized in that, At least comprising the following steps: Step one, the first walk ball (3) front end filling solvent; Step two, the first walk ball (3) and the second walk ball (4) between filling solvent; Step three, the second walk ball (4) and the third walk ball (5) between filling paint; Step four, paint spraying; Step five, the third walk ball (5) returns to the launch station; Step six, recycling paint; Step seven, discharging solvent; Step eight, pressure relief; Step nine, close all valves, complete paint spraying.

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