Paint spraying assembly and plate paint spraying machine

Abstract

The utility model relates to the technical field of plate machining, in particular to a paint spraying assembly and a plate paint sprayer, the paint spraying assembly is provided with N auxiliary sprayers, N pressure boxes, a main sprayer and an external supply box, and N is an integer larger than or equal to 1; the N pressure boxes are respectively communicated with the N auxiliary spray heads and are connected with the auxiliary spray heads; the external supply box is communicated with the main spray head; n + 1 kinds of paint are loaded in the N pressure boxes and the external supply box correspondingly. Each auxiliary spray head is provided with a special pressure box, and each pressure box is loaded with paint of one color, so that when the paint color needs to be replaced, the pressure box does not need to be cleaned, and only the pressure box loaded with the paint of the required color needs to be switched to another pressure box loaded with the paint of the required color. In this way, the number of times of cleaning the pressure box due to color change is greatly reduced, and therefore the paint spraying efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal processing technology, and in particular to a painting component and a sheet metal painting machine. Background Technology

[0002] Panel painting machines are indispensable tools in modern manufacturing, widely used in furniture making, auto parts production, building decoration, and many other fields. Their main function is to evenly coat the surface of various types of panels with one or more layers of paint to achieve aesthetic appeal, corrosion resistance, and moisture protection. Traditional panel painting machines typically use a single color of paint for continuous spraying. When a change of color is needed, production must be stopped, and the existing paint system must be thoroughly cleaned before switching to a different color. This process not only consumes large amounts of water and cleaning agents but also severely impacts production efficiency and economic benefits.

[0003] Problems with existing technologies: 1) Frequent color changes lead to low efficiency: During sheet metal processing, different paint colors are frequently needed to meet product design requirements. Existing sheet metal painting machines require extended downtime for cleaning when changing paint colors, significantly impacting production efficiency. For example, in a typical automotive parts production line, each color change may require 20 to 30 minutes for cleaning and preparation, posing a significant challenge to modern manufacturing industries that prioritize high efficiency. 2) High cleaning workload: Each paint color change requires cleaning the pipes and nozzles of the painting system to prevent cross-contamination between different paint colors. This process is both time-consuming and labor-intensive, increasing additional labor costs. Furthermore, the cleaning process may introduce additional impurities, affecting the quality of the final product. 3) Serious resource waste: The cleaning process consumes large amounts of water and cleaning agents, while also generating wastewater containing harmful substances, negatively impacting the environment. Statistics show that a medium-sized painting workshop can generate thousands of tons of wastewater annually due to cleaning, increasing the environmental burden on enterprises and contradicting the concept of sustainable development.

[0004] Therefore, how to eliminate the impact of frequent color changes on painting efficiency is a technical problem that technicians need to solve. Utility Model Content

[0005] This invention provides a paint spraying assembly and a panel paint spraying machine to solve the technical problem of low paint spraying efficiency caused by frequent cleaning of the pressure box due to frequent color changes in the prior art.

[0006] The first aspect of this utility model provides a painting assembly, comprising:

[0007] There are N auxiliary nozzles, N pressure boxes, main nozzles, and external supply boxes, where N is an integer greater than or equal to 1;

[0008] Each of the N pressure boxes is connected to one of the N auxiliary nozzles, and is connected to the auxiliary nozzles;

[0009] The external supply box is connected to the main nozzle;

[0010] N pressure tanks and N+1 external supply tanks are each loaded with N+1 types of paint.

[0011] The first possible implementation of the painting assembly in the first aspect also includes:

[0012] First drive unit and second drive unit;

[0013] The first drive unit is driven in the first direction, and its drive end is connected to the main nozzle and the auxiliary nozzle.

[0014] The second drive unit is driven in the second direction, and its drive end is connected to the main nozzle and the auxiliary nozzle.

[0015] The first direction is perpendicular to the second direction, and the plane containing the first and second directions is perpendicular to the painted surface of the board.

[0016] In conjunction with the first possible implementation of the first aspect of the painting assembly, in the second possible implementation of the first aspect of the painting assembly, the first drive unit includes a first servo motor and a synchronous belt;

[0017] The rotating shaft of the first servo motor is connected to the main nozzle and the auxiliary nozzle via the synchronous belt;

[0018] The second drive unit includes a second servo motor, a planetary reducer, and a lifting lead screw;

[0019] The rotating shaft of the second drive unit is coaxially connected to the planetary reducer, and the planetary reducer is connected to one end of the lifting screw via gears;

[0020] The other end of the lifting screw is connected to the main nozzle and the auxiliary nozzle.

[0021] In conjunction with the first possible implementation of the first aspect of the painting assembly or the second possible implementation of the first aspect of the painting assembly, the third possible implementation of the first aspect of the painting assembly further includes:

[0022] First connecting part and second connecting part;

[0023] The first connecting part is connected to the driving ends of the first driving unit and the second driving unit, and is rotatably connected to the second connecting part through the first dial.

[0024] The pressure box is located at the first connecting part;

[0025] Both the main nozzle and the auxiliary nozzle are rotatably connected to the second connecting part via a second dial.

[0026] The first and second dials are perpendicular to each other, and the plane of the two dials is perpendicular to the painted surface of the board. The first dial is perpendicular to the painted surface of the board.

[0027] In the fourth possible implementation of the painting assembly in the first aspect, the pressure box is detachably connected to the auxiliary nozzle;

[0028] The detachable mechanism can be either a snap-on or magnetic attachment.

[0029] In the fifth possible implementation of the painting assembly in the first aspect, the walls of the pressure chamber, from the inside out, consist of an inner layer, a temperature control layer, and an outer layer.

[0030] The temperature control layer is connected to the temperature controller.

[0031] In the sixth possible implementation of the painting assembly in the first aspect, the pressure chamber is equipped with a paint quantity detector;

[0032] The paint level detector is either a liquid level sensor or a weight sensor.

[0033] The second aspect of this utility model provides a panel painting machine, comprising:

[0034] The first aspect provides any possible paint spraying assembly.

[0035] In the first possible implementation of the sheet metal spraying machine in the second aspect, the number of the spraying components is 2;

[0036] The two sets of the paint spraying components are set at intervals relative to each other.

[0037] In conjunction with the first possible implementation of the panel painting machine of the second aspect, the second possible implementation of the panel painting machine of the second aspect further includes:

[0038] Spray booth, air conditioning components, conveyor components, and exhaust components;

[0039] Two sets of the paint spraying assembly are arranged at intervals opposite to each other in the paint spraying chamber;

[0040] The output end of the air conditioning unit is connected to the paint spray booth;

[0041] The input end of the exhaust assembly is connected to the paint spray booth;

[0042] The bearing surface of the conveying component corresponds to the painting range of the painting component, and the conveying direction is parallel to the line connecting the two painting components when they are facing each other.

[0043] As can be seen from the above technical solutions, this utility model has the following advantages:

[0044] The painting assembly provided by this utility model includes N auxiliary nozzles, N pressure tanks, a main nozzle, and an external supply tank, where N is an integer greater than or equal to 1. The N pressure tanks are connected to the N auxiliary nozzles respectively, and the external supply tank is connected to the main nozzle. The N pressure tanks and the external supply tank each hold N+1 types of paint. By equipping each auxiliary nozzle with a dedicated pressure tank, and each pressure tank holding one color of paint, when the paint color needs to be changed, there is no need to clean the pressure tanks; simply switch to another pressure tank holding the desired color of paint. This greatly reduces the number of times the pressure tanks need to be cleaned due to color changes, thereby improving painting efficiency.

[0045] By reducing cleaning time, paint spraying machines can complete color changes more quickly, thereby improving overall production efficiency. This design is particularly effective in production environments requiring frequent color changes, significantly reducing non-productive time and increasing production line output. Attached Figure Description

[0046] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0047] Figure 1 A partial structural schematic diagram of a paint spraying assembly provided in an embodiment of this utility model;

[0048] Figure 2 This is another partial structural diagram of a paint spraying assembly provided in an embodiment of the present utility model;

[0049] Figure 3 This is another partial structural diagram of a paint spraying assembly provided in an embodiment of the present utility model;

[0050] Figure 4 This is another partial structural diagram of a paint spraying assembly provided in an embodiment of the present utility model;

[0051] Figure 5 A partial structural schematic diagram of a panel painting machine provided in an embodiment of this utility model;

[0052] Figure 6 This is another partial structural schematic diagram of a panel painting machine provided in an embodiment of the present utility model;

[0053] Figure 7This is another partial structural schematic diagram of a panel painting machine provided in an embodiment of the present utility model;

[0054] in:

[0055] 100. Spray painting assembly; 101. Auxiliary spray nozzle; 102. Main spray nozzle

[0056] 103. Pressure box; 104. First servo motor; 105. Synchronous belt

[0057] 106. Pulley; 107. Second servo motor; 108. Planetary reducer

[0058] 109. Lifting screw; 110. Output gear; 111. Input gear

[0059] 112. First connecting part; 113. Fixing base; 114. First dial

[0060] 115. Second connecting part; 116. Second dial; 117. Mounting base

[0061] 118. Horizontal Shift Arm; 119. Horizontal Shift Main Board; 120. Lifting Guide Rail

[0062] 121. Connecting block; 122. Upper fixing plate; 123. Lower fixing plate

[0063] 124. Limiting spacer; 125. Motor mounting plate; 21. Machine body

[0064] 22. Spray booth; 231. Air conditioning fan; 232. Air outlet.

[0065] 233. Air inlet baffle; 24. Conveying assembly; 251. Centrifugal fan.

[0066] 252. Exhaust box; 26. Cleaning assembly. Detailed Implementation

[0067] This utility model provides a paint spraying assembly 100 and a panel paint spraying machine to solve the technical problem that the paint spraying efficiency is low in the prior art due to the need for frequent cleaning of the pressure box 103 caused by frequent color changes.

[0068] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0069] In the description of the embodiments of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0070] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a replaceable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0071] Existing sheet metal painting machines suffer from inefficiency due to frequent color changes: During sheet metal processing, different paint colors are often required to meet product design requirements. Existing sheet metal painting machines require lengthy downtime for cleaning when changing paint colors, significantly impacting production efficiency. For example, in a typical automotive parts production line, each color change can take 20 to 30 minutes for cleaning and preparation, posing a significant challenge to modern manufacturing industries that prioritize high efficiency. Example

[0072] Please see Figure 1-4 The paint spraying assembly 100 provided in this embodiment of the present invention includes:

[0073] There are N auxiliary nozzles 101, N pressure tanks 103, a main nozzle 102, and an external supply tank (not shown in the figure), where N is an integer greater than or equal to 1; the N pressure tanks 103 are connected to the N auxiliary nozzles 101 respectively, and are connected to the auxiliary nozzles 101; the external supply tank is connected to the main nozzle 102; the N pressure tanks 103 and the external supply tank are each loaded with N+1 types of paint.

[0074] It should be noted that:

[0075] Pressure chamber 103 is primarily used to store paint, providing a stable paint supply to the spray painting machine. Each pressure chamber 103 stores paint of one color to ensure color purity and consistency. The pressure chamber 103 provides a certain pressure to the paint through an internal pressure control system, allowing the paint to flow smoothly into the secondary nozzle 101 and form a stable atomization effect at the nozzle. Stable pressure helps improve the uniformity and quality of the paint spraying. The pressure in the pressure chamber 103 is adjustable to control the paint flow rate. By adjusting the pressure, different painting needs can be accommodated, such as different spraying speeds, thicknesses, and coverage areas. Each auxiliary nozzle 101 is individually connected to a pressure tank 103, which contains paint to supply the paint required for painting the nozzles connected to it. The pressure tank 103 is connected to the auxiliary nozzle 101, meaning that the positions of the pressure tank 103 and the auxiliary nozzle 101 are relatively fixed. During the painting process, the pressure tank 103 moves together with the auxiliary nozzle 101. The number of auxiliary nozzles 101 is determined based on the number of commonly used paint colors, and it is optimal to choose a number that is equal to the total number of auxiliary nozzles 101 and main nozzles 102.

[0076] The main nozzle 102 and the auxiliary nozzle 101 have the same structural shape. During the painting process, the main nozzle 102 moves together with the auxiliary nozzle 101. It is connected to the external supply box. The function of the external supply box is the same as that of the pressure box 103. The difference is that the external supply box does not move with the main nozzle 102, but is fixed on the panel painting machine or externally installed outside the panel painting machine. It is connected to the main nozzle 102 through a pipe to supply paint. The capacity of the external supply box is greater than that of the pressure box 103, so the paint loaded in the external supply box is the most commonly used paint.

[0077] The beneficial effects of this embodiment include:

[0078] 1. By equipping each auxiliary nozzle 101 with a dedicated pressure tank 103, and each pressure tank 103 being filled with one color of paint, when the paint color needs to be changed, there is no need to clean the pressure tank 103; simply switch to another pressure tank 103 filled with the desired color of paint. This greatly reduces the number of times the pressure tank 103 needs to be cleaned due to color changes, thereby improving painting efficiency.

[0079] 2. By reducing cleaning time, the paint spraying machine can complete color changes more quickly, thereby improving overall production efficiency. This design is particularly useful in production environments where frequent color changes are required, significantly reducing non-productive time and increasing production line output.

[0080] 3. Reducing the number of cleaning cycles means reducing the amount of cleaning agents and water needed, thus lowering cleaning-related costs. Furthermore, fewer cleaning cycles also reduce the time and labor costs associated with manual cleaning.

[0081] 4. It can quickly adapt to different painting tasks and color requirements, and the paint spraying machine has higher flexibility and adaptability.

[0082] Optimization of the painting assembly 100: Because the painting surface of the board is large, the main nozzle 102 and the auxiliary nozzle 101 need to be moved appropriately to achieve painting of the surface. Therefore, a first driving unit and a second driving unit are added to the painting assembly 100. The driving direction of the first driving unit is the first direction, and the driving end of the first driving unit is connected to the main nozzle 102 and the auxiliary nozzle 101 to drive both nozzles to move in the first direction at the same time. The driving direction of the second driving unit is the second direction, and the driving end of the second driving unit is connected to the main nozzle 102 and the auxiliary nozzle 101 to drive both nozzles to move in the second direction at the same time. The first direction and the second direction are perpendicular, and the plane containing the first direction and the second direction is perpendicular to the painting surface of the board. Thus, by combining the first and second drive units, the spray nozzles (main spray nozzle 102 and auxiliary spray nozzle 101) are driven to move precisely on a plane perpendicular to the paint surface of the board, thereby moving to the corresponding area of ​​the paint surface for painting, or moving away from or closer to the board in a direction perpendicular to the paint surface, improving the flexibility and accuracy of the painting process.

[0083] For example: Figure 4 As shown, the first drive unit includes a first servo motor 104 and a synchronous belt 105. The rotating shaft of the first servo motor 104 is connected to the main nozzle 102 and the auxiliary nozzle 101 via the synchronous belt 105. Specifically, the synchronous belt 105 is wound around four square-arranged pulleys 106, forming a square cylindrical shape. The rotating shaft of the first servo motor 104 is connected to one of the pulleys 106 via a pulley 106 seat, thereby driving the synchronous belt 105 to move around the four pulleys 106. The nozzle is then fixedly connected to the synchronous belt 105, thus driving the nozzle to move left and right (in the first direction). The second drive unit includes a second servo motor 107. The system includes a planetary reducer 108 and a lifting screw 109. Specifically, the rotating shaft of the second drive unit is coaxially connected to the planetary reducer 108. An output gear 110 is sleeved on the output end of the planetary reducer 108. An input gear 111 is sleeved on the upper end of the lifting screw. The output gear 110 and the input gear 111 mesh with each other. The axis of the lifting screw 109 is parallel to the axis of the rotating shaft of the second servo motor 107. The lower end of the lifting screw 109 is connected to the nozzle. Thus, by driving the lifting screw 109 to rotate through the second servo motor 107, the nozzle and pressure box 103 can be driven to move up and down (in the second direction).

[0084] Further optimization of the paint spraying assembly 100: In order to precisely adjust the angle of the spray nozzle and further improve the accuracy of paint spraying, a first connecting part 112 and a second connecting part 115 are added to the paint spraying assembly 100; the first connecting part 112 is connected to the driving end of the first driving unit and the second driving unit, and is rotatably connected to the second connecting part 115 through the first dial 114, so that the second connecting part 115 can be rotated and adjusted; the pressure box 103 is disposed on the first connecting part 112, the first connecting part 112 provides support for the second connecting part 115 and the pressure box 103, and serves as the connection medium between the first driving unit and the second driving unit and the spray nozzle and the pressure box 103. Both the main nozzle 102 and the auxiliary nozzle 101 are rotatably connected to the second connecting part 115 via a second dial 116, allowing the nozzles to be rotated and adjusted. The rotation axes of the first dial 114 and the second dial 116 are perpendicular to each other, and the plane of the two rotation axes is perpendicular to the paint surface of the board. The rotation axis of the first dial 114 is perpendicular to the paint surface of the board. Thus, the first drive unit and the second drive unit can simultaneously drive the nozzles and the pressure box 103, and the angle of the nozzles can be adjusted by rotating the first dial 114 and the second dial 116 to adapt to different painting needs and improve the accuracy of painting.

[0085] For example: the following is based on Figure 1 The orientation is explained analytically with the length direction of the first connecting part 112 as the front-back direction. A fixed seat 113 is fixedly connected to both the left and right sides of the front front side of the lower surface of the first connecting part 112. Each fixed seat 113 is rotatably connected to the upper end of a second connecting part 115 via a first scale 114. The axis of the first scale 114 extends vertically, allowing the second connecting part 115 to rotate around the axis of the first scale 114 as needed. The lower inner side of the second connecting part 115 on the left side is connected to a second scale... The dial 116 is rotatably connected to the main nozzle 102. The lower inner side of the second connecting part 115 on the right side is rotatably connected to the auxiliary nozzle 101 via a second dial 116. The axis of the second dial 116 extends in the left-right direction, allowing the main nozzle 102 and the auxiliary nozzle 101 to rotate around the axis of the second dial 116 as needed. The rear side of the upper surface of the first connecting part 112 is detachably connected to the lower end of the pressure box 103. The rear side of the first connecting part 112 is fixedly connected to the lower end of the transverse arm 118 via a mounting base 117. Figure 2As shown, a horizontal moving main plate 119 is provided on the rear side of the horizontal moving arm 118. A downward-extending lifting rail is provided on both the left and right sides of the front surface of the horizontal moving main plate 119. The left and right sides of the horizontal moving arm 118 are respectively connected to two lifting guide rails 120. The lower end of the front surface of the horizontal moving main plate 119 is connected to a connecting block 121. An upper fixing plate 122 is fixedly connected to both the left and right sides of the lower surface of the connecting block 121. Each upper fixing plate 122 cooperates with a lower fixing plate 123 to clamp the synchronous belt 105. A through hole extending in the vertical direction is opened on the right side of the connecting block 121. The through hole is connected to the lower end of the lifting screw 109. A limiting spacer 124 is sleeved on the upper side of the lifting screw 109. The upper end of the lifting screw 109 extends along... The first servo motor 107 passes vertically through the left side of the motor mounting plate 125 and engages with an input gear 111. The second servo motor 107's rotating shaft extends vertically and connects to the input end of the planetary reducer 108 above. The output end of the planetary reducer 108 passes vertically through the right side of the motor mounting plate 125 and engages with an output gear 110. The output gear 110 meshes with the input gear 111. Thus, the second servo motor 107 drives the output gear 110 to rotate, which in turn drives the input gear 111 to rotate, thereby driving the lifting screw 109 to rotate. This causes the horizontal moving arm 118 to move vertically along the lifting track, adjusting the nozzle height. This allows for adjustment of the distance between the nozzle and the material to accommodate materials of different thicknesses. The motor mounting plate 125 is fixedly connected to the upper right end of the horizontal moving main plate 119.

[0086] Further optimization of the paint spraying assembly 100: To improve the convenience and maintainability of adding paint, the pressure box 103 and the auxiliary nozzle 101 are connected in a detachable manner. More specifically, the pressure box 103 is detachably connected to the first connecting part 112. The detachable method can be a snap-on method or a magnetic method. The pressure box 103 is fixed to the first connecting part 112 in a detachable manner. When it is necessary to add paint or maintain the pressure box 103, the pressure box 103 can be quickly removed for easy daily maintenance and replacement.

[0087] Optimization of pressure chamber 103: In order to control the paint temperature and ensure that the paint is sprayed in the best condition, the chamber wall of pressure chamber 103 is set as a sandwich structure. The sandwich structure consists of an inner layer, a temperature control layer and an outer layer from the inside to the outside. The temperature control layer is connected to a temperature controller, which is composed of a heater and a cooler. This allows the temperature control layer to be heated or cooled as needed, thereby controlling the temperature of the paint that is in direct contact with the inner layer and adjusting the paint temperature to the most suitable temperature to ensure the quality of the paint spraying.

[0088] Further optimization of pressure tank 103: In order to realize real-time monitoring of the remaining amount of paint, a paint quantity detector is installed in pressure tank 103. The paint quantity detector can be a liquid level sensor installed on the side wall of pressure tank 103 or a weight sensor installed on the bottom wall of pressure tank 103, so as to ensure that the operator is promptly reminded to add or replace paint when the paint quantity is insufficient. Example

[0089] Please see Figures 1 to 7 The sheet metal spray painting machine provided in this embodiment of the utility model includes:

[0090] Any of the painting components 100 provided in Embodiment 1. This painting machine can quickly change paint colors and improve painting efficiency.

[0091] The panel painting machine provided in this embodiment can achieve rapid color change, reduce the number of cleaning times, improve painting efficiency and quality, and reduce maintenance costs, thus having significant economic and social benefits.

[0092] Optimization of the panel painting machine: Two sets of painting components 100 are simultaneously installed on a panel painting machine, with the two sets of painting components 100 positioned opposite each other at a distance. By having the two sets of painting components 100 simultaneously paint the same surface of the panel, the painting efficiency can be further improved.

[0093] Specifically: such as Figures 5 to 7As shown, the panel painting machine also includes a spray booth 22, an air conditioning unit, a conveying unit 24, and an exhaust unit. The spray booth 22, enclosed by the machine body 21, provides a relatively enclosed environment for painting. Two sets of spraying units 100 are spaced apart and opposite each other within the spray booth 22; one set of spraying units 100 is located at the front of the spray booth 22, and the other set is located at the rear of the spray booth 22. The output end of the air conditioning unit is connected to the spray booth 22. Specifically, the air conditioning unit includes two units located on the machine body 21. 1. The air conditioning fan 231 in the upper right part has one air outlet 232 located on the front side and the other air outlet 232 located on the rear side. An air inlet baffle 233 is provided between the air outlets 232 of the two air conditioning fans 231 to divide the paint spraying chamber 22 into two areas, thereby realizing separate control of temperature and humidity in the paint spraying areas of the two sets of paint spraying components 100. The input end of the exhaust component is connected to the paint spraying chamber 22. Specifically, the exhaust component is located in the body. On the left side of 21, there is a centrifugal fan 251 and an exhaust box 252. The centrifugal fan 251 is located on the upper surface of the exhaust box 252. The input end of the exhaust box 252 is connected to the spray booth 22, and the output end is connected to the input end of the centrifugal fan 251, so as to remove harmful gases generated during the spraying process. At the same time, the operation of the centrifugal fan 251 creates a negative pressure environment in the spray booth 22, preventing undried paint atomized particles from escaping from the spray booth 22, and also preventing external dust from entering the spray booth 22, thus ensuring... The cleanliness of the spray booth 22 is maintained; the bearing surface of the conveying component 24 corresponds to the spraying range of the spraying component 100, and the conveying direction is parallel to the line connecting the two spraying components 100 when they are facing each other, that is, the line connecting the front and back when the two spraying components 100 are facing each other, so as to send the board to be painted into the spraying area corresponding to the nozzle. That is, the board is transported in the front and back direction by the conveying component 24, so that the board flows through the front spraying component 100 and the rear spraying component 100 in sequence, thereby realizing double-layer painting of the board. In addition, in order to facilitate the cleaning of the spraying component 100, a cleaning component 26 is provided on the rear side of the machine body 21, below the conveying component 24, so that the spraying component 100 can be cleaned by the cleaning component 26.

[0094] The device embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interface, or the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms.

[0095] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A painting assembly, characterized in that, include: There are N auxiliary nozzles, N pressure boxes, main nozzles, and external supply boxes, where N is an integer greater than or equal to 1; The N pressure boxes are respectively connected to the N auxiliary nozzles and are connected to the auxiliary nozzles; The external supply box is connected to the main nozzle; The N pressure tanks and the external supply tank are each loaded with N+1 types of paint.

2. The painting assembly according to claim 1, characterized in that, Also includes: First drive unit and second drive unit; The first driving unit is driven in a first direction, and its driving end is connected to the main nozzle and the auxiliary nozzle. The second drive unit is driven in the second direction, and its drive end is connected to the main nozzle and the auxiliary nozzle. The first direction is perpendicular to the second direction, and the plane containing the first and second directions is perpendicular to the painted surface of the board.

3. A painting assembly according to claim 2, characterized in that: The first drive unit includes a first servo motor and a synchronous belt; The rotating shaft of the first servo motor is connected to the main nozzle and the auxiliary nozzle via the synchronous belt; The second drive unit includes a second servo motor, a planetary reducer, and a lifting lead screw; The rotating shaft of the second drive unit is coaxially connected to the planetary reducer, and the planetary reducer is connected to one end of the lifting screw via gears; The other end of the lifting screw is connected to the main nozzle and the auxiliary nozzle.

4. A painting assembly according to claim 2 or 3, characterized in that, Also includes: First connecting part and second connecting part; The first connecting part is connected to the driving ends of the first driving unit and the second driving unit, and is rotatably connected to the second connecting part through the first dial; The pressure box is located at the first connecting part; Both the main nozzle and the auxiliary nozzle are rotatably connected to the second connecting part via a second scale. The rotation axes of the first dial and the second dial are perpendicular to each other, and the plane of the two rotation axes is perpendicular to the painted surface of the board. The rotation axis of the first dial is perpendicular to the painted surface of the board.

5. A painting assembly according to claim 1, characterized in that: The pressure box and the auxiliary nozzle are detachably connected. The detachable method is either a snap-on method or a magnetic method.

6. A painting assembly according to claim 1, characterized in that: The walls of the pressure chamber, from the inside out, consist of an inner layer, a temperature control layer, and an outer layer. The temperature control layer is connected to the temperature controller.

7. A painting assembly according to claim 1, characterized in that: The pressure chamber is equipped with a paint quantity detector; The paint level detector is a liquid level sensor or a weight sensor.

8. A panel painting machine, characterized in that, include: A paint spraying assembly as described in any one of claims 1 to 7.

9. A panel painting machine according to claim 8, characterized in that: The number of the painting components is 2; The two sets of painting components are arranged at intervals relative to each other.

10. A panel painting machine according to claim 9, characterized in that, Also includes: Spray booth, air conditioning components, conveyor components, and exhaust components; The two sets of painting components are arranged at intervals opposite to each other in the painting chamber; The output end of the air conditioning unit is connected to the paint spray booth; The input end of the exhaust assembly is connected to the paint spray chamber; The bearing surface of the conveying component corresponds to the painting range of the painting component, and the conveying direction is parallel to the line connecting the two painting components when they are facing each other.

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