Robot for synchronously spraying two colors on bottom surface of wood-plastic floor

Abstract

The invention discloses a wood-plastic floor bottom surface double-color synchronous spraying robot, and relates to the technical field of industrial robots, the wood-plastic floor bottom surface double-color synchronous spraying robot comprises a spraying mechanism, the spraying mechanism comprises a plasma purifier, two groups of first round pipes and two second round pipes, and the air inlet end and the air outlet end of the plasma purifier communicate with a collecting pipe and a communicating pipe correspondingly; according to the device, the purification mechanism can effectively extract volatile organic compound gas in the storage box, the volatile organic compound gas can be purified, the volatile organic compound gas can be purified, the volatile organic compound gas can be purified, the volatile organic compound gas can be purified, and the device can be used for purifying the volatile organic compound gas in the storage box, so that the volatile organic compound gas can be effectively purified, and the service life of the volatile organic compound gas can be prolonged. Therefore, the volatile organic compound gas is prevented from escaping to a working area of an operator, and meanwhile, the operator is prevented from inhaling the volatile organic compound gas, so that the use efficiency of the double-color synchronous spraying robot is improved.

Description

Technical Field

[0001] This invention relates to the field of industrial robot technology, specifically a robot for simultaneous two-color spraying of the bottom surface of wood-plastic composite flooring. Background Technology

[0002] Industrial robots are multi-jointed manipulators or multi-degree-of-freedom mechanical devices designed for the industrial field. Under the control of preset programs or artificial intelligence technology, industrial robots can automatically perform industrial production tasks such as handling, welding, assembly, and painting to replace or assist human labor and improve production efficiency and precision.

[0003] In the processing of wood-plastic composite flooring, traditional single-color spraying robots need to perform multiple positioning and masking operations to complete the coloring process. This coloring method is not only cumbersome, but also prone to boundary misalignment due to repeated positioning, leading to an increased defect rate. Therefore, in order to improve the product yield of wood-plastic composite flooring, a dual-color synchronous spraying robot should be used for coloring the flooring.

[0004] The existing dual-color synchronous spraying robots store paint in their storage bins, which continuously release volatile organic compounds (VOCs) during storage. These gases accumulate in the empty space inside the bins, creating a harmful gas environment. When the bins need to be refilled, replaced due to paint depletion or color changes, the lid must be removed. This operation breaks the original seal of the bins, and the VOCs accumulated inside quickly escape into the operator's work area, directly polluting the air. If these VOCs are inhaled by the operators, they can irritate their respiratory and nervous systems, threatening their health. However, the existing dual-color synchronous spraying robots lack the ability to purify VOCs, making this situation unavoidable.

[0005] Therefore, we have proposed a new robot for simultaneous two-color spraying of the bottom surface of wood-plastic composite flooring to solve the problems mentioned in the background art. Summary of the Invention

[0006] The purpose of this invention is to provide a robot for simultaneous dual-color spraying of the bottom surface of wood-plastic composite flooring. By setting up a purification mechanism, volatile organic compounds (VOCs) in the storage box can be extracted and purified before the box cover is removed from the storage box, thereby preventing VOCs from escaping into the operator's work area and preventing the operator from inhaling VOCs, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a robot for simultaneous dual-color spraying of wood-plastic flooring bottom surface, comprising a spraying mechanism, wherein the spraying mechanism includes a mounting base and two storage boxes, each of the storage boxes is fitted with a lid on top, and the spraying mechanism is equipped with a purification mechanism for purifying the gas volatilized from the coating. The purification mechanism includes a plasma purifier, two sets of first circular tubes, and two second circular tubes. The inlet and outlet of the plasma purifier are respectively connected to a manifold and a connecting pipe, and the outlet of the connecting pipe is connected to a distributor. A processing box is fixed on the top of the plasma purifier, and an adsorption block for purifying the gas is placed inside the processing box. The inlet of each first circular tube is connected to a first control valve, and multiple first control valves are connected to a multi-stage distributor. The outlet of each second circular tube is connected to a first connecting pipe, and the inlet of the multi-stage distributor is connected to a second connecting pipe, and the inlet of the second connecting pipe is connected to a second control valve. The outlet of each first connecting pipe is connected to a corrosion-resistant pipe. The first control valve is used to control the opening and closing of each outlet of the multi-stage distributor to treat the volatile gases in the storage box at different stages.

[0008] Preferably, the outlet end of the distributor is fixedly penetrated through the outer wall of the treatment box and extends into the interior of the treatment box, and is embedded in the adsorption block inside the treatment box. The top of the treatment box is equipped with a box cover, the inside of the box cover is hollow, and the bottom of the box cover is provided with multiple vent holes. The top outlet of the box cover is provided with a sealing plug.

[0009] Preferably, the bottom of the box cover is in contact with the top of the adsorption block, the two air inlets of the manifold are respectively connected to the air outlets of the two corrosion-resistant pipes, the air outlet of one of the first round pipes in each group is fixedly penetrated through the outer wall of the corresponding storage box near the bottom, and the air outlet of the other first round pipe in each group is fixedly penetrated through the outer wall of the corresponding storage box near the top.

[0010] Preferably, the interior of each first circular tube is connected to the interior of the corresponding storage box, and the air inlet ends of the two second circular tubes are fixedly inserted through the outer wall of the two storage boxes near the top, and the interior of the two second circular tubes is connected to the interior of the two storage boxes.

[0011] Preferably, each of the storage boxes has a fixing block fixed to its outer wall, each of the first connecting pipes is movably fitted into the round holes of the two fixing blocks, a connecting plate is fixed to the surface of the mounting base near the bottom, and the plasma purifier is installed on the top of the connecting plate.

[0012] Preferably, each of the box covers has a check valve connected to its top air inlet, each check valve has a filter attached to its air inlet end face, each storage box has a bottom discharge end that movably passes through the top of the mounting base, both storage boxes are mounted on the top of the mounting base, and both storage boxes have a first electric valve connected to their bottom discharge ends.

[0013] Preferably, a dual-shaft motor, two pump heads, and an air compressor are installed at the bottom of the inner wall of the mounting base. The air inlet of the second control valve is connected to another port of the air storage tank on the air compressor. A coupling is installed between the main shaft end of the dual-shaft motor and the rotating shaft end of one of the pump heads, and a coupling is also installed between the auxiliary shaft end of the dual-shaft motor and the rotating shaft end of the other pump head.

[0014] Preferably, the inlet ends of both pump heads are connected to liquid inlet pipes, and the inlet ends of the two liquid inlet pipes are respectively connected to the outlet ends of the two first electric valves. The outlet ends of both pump heads are connected to liquid outlet pipes, and the outlet ends of the two liquid outlet pipes are connected to material pipes. A robotic arm is installed on the top of the mounting base, and the mounting end of the robotic arm is located between the two storage boxes. An L-shaped rod is fixed inside the round hole at the front end of the robotic arm, and a two-color spray gun is installed on the outer surface of the L-shaped rod near one end.

[0015] Preferably, both feed ends of the dual-color spray gun are connected to one-way valves, the feed ends of the two one-way valves are connected to arc-shaped pipes, the feed ends of the two arc-shaped pipes are connected to flow regulating valves, the discharge ends of the two material pipes are respectively connected to the feed ends of the two flow regulating valves, the air inlet of the dual-color spray gun is connected to an air pipe, and two ports of the air storage tank on the air compressor are connected to second electric valves, one of the air outlets of the second electric valves being connected to the air inlet of the air pipe.

[0016] Preferably, the air compressor's inlet end is connected to a filter, a control cabinet is installed on the top of the connecting plate, an alarm is installed on the top of the control cabinet, three perforated blocks are fixed on the surface of the mounting base near the top, the two liquid outlet pipes are respectively movably fitted into the round holes of two of the perforated blocks, the feed end of the multi-stage diverter is movably fitted into the round hole of the other perforated block, and pressure sensors are installed at the detection ends of both liquid outlet pipes.

[0017] Compared with the prior art, the beneficial effects of the present invention are: 1. In this invention, the purification mechanism can effectively extract and purify the volatile organic compound gas inside the storage box, thereby preventing the volatile organic compound gas from escaping into the operator's work area and preventing the operator from inhaling the volatile organic compound gas. When adding paint to the storage box, the airflow provided by the compressed air tank on the air compressor can blow away the volatile organic compounds accumulated inside the storage box and transport them to the inside of the second circular pipe. Then, the air mixed with volatile organic compound gas is collected by the manifold.

[0018] 2. In this invention, during the initial air treatment, a plasma purifier is used to process volatile organic compound gases into air whose main components are carbon dioxide, water vapor, trace amounts of ozone, and very small amounts of carbon monoxide. During the second treatment, an adsorption block and a distributor are used to evenly distribute the pre-treated air onto the adsorption block for adsorption treatment. The air after the second treatment is then discharged into the environment.

[0019] 3. In this invention, during operation, the robotic arm and L-shaped rod enable the simultaneous movement of the two-color spray gun and the components mounted on it. When the dual-axis motor starts, the pump head also starts, drawing paint from the storage box and delivering it into the channel of the two-color spray gun. When the air compressor starts, it generates compressed air, providing the air agitation power source for the two-color spray gun. When both paints and compressed air are sprayed from the corresponding outlets on the two-color spray gun, the compressed air disperses the two paints, ensuring they are evenly sprayed onto the bottom surface of the wood-plastic composite flooring until the flooring is fully coated. Simultaneously, the control cabinet and pressure sensor monitor the paint delivery status, and an alarm is triggered promptly if any problems occur. Attached Figure Description

[0020] Figure 1 This is a side-view perspective view of the robot for synchronous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention. Figure 2 This is another perspective view of the robot for simultaneous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention; Figure 3 This is a three-dimensional view of the robotic arm of the robot for synchronous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention. Figure 4 This is a top-view perspective view of the robot for simultaneous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention. Figure 5 This is a sectional perspective view of the spraying mechanism of the robot for simultaneous two-color spraying of wood-plastic flooring underside according to the present invention. Figure 6 This is a schematic diagram of the frontal view of the robot for synchronous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention. Figure 7This is a sectional perspective view of the purification mechanism of the robot for simultaneous dual-color spraying of wood-plastic flooring underside according to the present invention. Figure 8 This is a perspective view of another part of the robot for simultaneous two-color spraying of the bottom surface of wood-plastic flooring according to the present invention; Figure 9 This invention relates to a robot for simultaneous two-color spraying of the bottom surface of wood-plastic composite flooring. Figure 2 Enlarged 3D view of the structure at point A in the middle.

[0021] In the diagram: 1. Spraying mechanism; 101. Mounting base; 102. Material storage box; 103. Box cover; 104. Check valve; 105. Filter element; 106. First electric valve; 107. Dual-shaft motor; 108. Coupling; 109. Pump head; 110. Inlet pipe; 111. Outlet pipe; 112. Material pipe; 113. L-shaped rod; 114. Two-color spray gun; 115. One-way valve; 116. Arc-shaped pipe; 117. Flow regulating valve; 118. Air pipe; 119. Air compressor; 120. Filter; 121. Second electric valve; 122. Robotic arm; 123. Control... 1. Cabinet; 124. Alarm; 125. Perforated block; 126. Pressure sensor; 2. Purification mechanism; 201. Plasma purifier; 202. Connecting pipe; 203. Processing box; 204. Diverter; 205. Adsorption block; 206. Box cover; 207. Sealing plug; 208. Manifold; 209. First circular pipe; 210. First control valve; 211. Multi-stage diverter; 212. Second circular pipe; 213. First connecting pipe; 214. Fixing block; 215. Second control valve; 216. Second connecting pipe; 217. Corrosion-resistant pipe; 218. Connecting plate. Detailed Implementation

[0022] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] Example 1: Please refer to Figures 1-6 , Figure 8 and Figure 9As shown, the present invention provides a technical solution: a robot for simultaneous dual-color spraying of the bottom surface of wood-plastic composite flooring, including a spraying mechanism 1. The spraying mechanism 1 includes a mounting base 101 and two storage boxes 102. Each storage box 102 is equipped with a cover 103 on its top. A check valve 104 is connected to the air inlet of each cover 103. A filter 105 is adhered to the air inlet end face of each check valve 104. The bottom outlet end of each storage box 102 movably passes through the top of the mounting base 101. Both storage boxes 102 are mounted on the top of the mounting base 101. The bottom outlet ends of both storage boxes 102 are connected to a first electric valve 106. The mounting base 101... A dual-shaft motor 107, two pump heads 109, and an air compressor 119 are installed at the bottom of the inner wall. A coupling 108 is installed between the main shaft end of the dual-shaft motor 107 and the rotating shaft end of one of the pump heads 109, and a coupling 108 is also installed between the auxiliary shaft end of the dual-shaft motor 107 and the rotating shaft end of the other pump head 109. The feed ends of both pump heads 109 are connected to inlet pipes 110, and the feed ends of the two inlet pipes 110 are respectively connected to the discharge ends of the two first electric valves 106. The discharge ends of both pump heads 109 are connected to outlet pipes 111, and the discharge ends of the two outlet pipes 111 are connected to feed pipes 112. A mounting base 101 is installed on the top. A robotic arm 122 is provided, with its mounting end positioned between two storage boxes 102. An L-shaped rod 113 is fixed inside the round hole at the front end of the robotic arm 122. A two-color spray gun 114 is mounted on the outer surface of the L-shaped rod 113 near one end. Both inlet ends of the two-color spray gun 114 are connected to one-way valves 115. The inlet ends of the two one-way valves 115 are connected to arc-shaped pipes 116. The inlet ends of the two arc-shaped pipes 116 are connected to flow regulating valves 117. The outlet ends of the two material pipes 112 are connected to the inlet ends of the two flow regulating valves 117, respectively. The air inlet end of the two-color spray gun 114 is connected to an air pipe 118. An air tank is located on the air compressor 119. Two of the ports are connected to a second electric valve 121. The outlet of one of the second electric valves 121 is connected to the inlet of the air pipe 118. The inlet of the air compressor 119 is connected to a filter 120. A connecting plate 218 is fixed near the bottom of the surface of the mounting base 101. A control cabinet 123 is installed on the top of the connecting plate 218. An alarm 124 is installed on the top of the control cabinet 123. Three perforated blocks 125 are fixed near the top of the surface of the mounting base 101. Two liquid outlet pipes 111 are respectively movably fitted into the round holes of two of the perforated blocks 125. Pressure sensors 126 are installed at the detection ends of the two liquid outlet pipes 111.

[0024] In this embodiment, during operation, the activated robotic arm 122 moves its front-end L-shaped rod 113 according to a preset program. The moving L-shaped rod 113 then moves the two-color spray gun 114 and the components mounted on it. When the discharge end of the two-color spray gun 114 is aligned with the fixed wood-plastic composite flooring that needs coloring, the activated dual-axis motor 107 rotates the shafts of the two pump heads 109 via two couplings 108, activating the two pump heads 109 and ensuring suction at both inlet ends. The inlet ends of the activated pump heads 109 then work with the inlet pipe 110 and the first electric valve 106 to draw away the paint from the storage box 102. The drawn-away paint then sequentially enters the outlet pipe 111, the material pipe 112, the flow regulating valve 117, the arc-shaped pipe 116, and the one-way valve 115, before finally entering the two-color spray gun 114. The paint flows through the paint channels and continues to move towards its corresponding outlet. Simultaneously, the air compressor 119, which is activated, filters the ambient air through the filter 120, then draws it in, compresses it, and stores it in the air tank. When compressed air is needed, one of the second electric valves 121 is opened to release the compressed air, allowing it to pass through the inside of the opened second electric valve 121, enter the inside of the air pipe 118, and then enter the gas channel of the two-color spray gun 114, continuing to move towards its corresponding outlet. When both paints and compressed air are sprayed from the corresponding outlets on the two-color spray gun 114, the compressed air sprayed from the two-color spray gun 114 will disperse the two types of paints. Subsequently, the two types of paints will be sprayed onto the bottom surface of the wood-plastic flooring until the wood-plastic flooring is completely coated. At the same time, the control cabinet 123 can also monitor the paint delivery status in real time through the pressure sensor 126, and promptly alarm the operator through the alarm 124 in case of any problems.

[0025] Example 2: According to Figure 1 , Figure 2 , Figure 4 and Figures 6-9As shown, the spraying mechanism 1 is equipped with a purification mechanism 2, which is used to purify the gas emitted by the coating. The purification mechanism 2 includes a plasma purifier 201, two sets of first circular tubes 209, and two second circular tubes 212. The inlet and outlet of the plasma purifier 201 are respectively connected to a manifold 208 and a connecting pipe 202, and the outlet of the connecting pipe 202 is connected to a distributor 204. A treatment box 203 is fixed on the top of the plasma purifier 201, and an adsorption block 205 for purifying the gas is placed inside the treatment box 203. The inlet of each first circular tube 209 is connected to a first control valve 210, and the inlets of multiple first control valves 210 are connected to a multi-stage distributor 211. The outlet of each second circular tube 212... Each end of the multi-stage diversion pipe 211 is connected to a first connecting pipe 213. The air inlet end of the multi-stage diversion pipe 211 is connected to a second connecting pipe 216, and the air inlet end of the second connecting pipe 216 is connected to a second control valve 215. The air outlet end of each first connecting pipe 213 is connected to a corrosion-resistant pipe 217. The first control valve 210 is used to control the opening and closing of each air outlet of the multi-stage diversion pipe 211 for treating the volatile gases of the storage box 102 at different stages. The air outlet end of the diverter 204 is fixedly penetrated through the outer wall of the treatment box 203 and extends into the interior of the treatment box 203, and is embedded in the adsorption block 205 inside the treatment box 203. A box cover 206 is installed on the top of the treatment box 203. The interior of the box cover 206 is hollow, and the bottom of the box cover 206 is provided with multiple vent holes. A sealing plug 207 is provided at the top air outlet of the box cover 206. The bottom of the box cover 206 contacts the top of the adsorption block 205. The two air inlets of the manifold 208 are respectively connected to the air outlets of the two corrosion-resistant pipes 217. The air outlet of one of the first round pipes 209 in each group is fixedly inserted through the outer wall of the corresponding storage box 102 near the bottom. The air outlet of the other first round pipe 209 in each group is fixedly inserted through the outer wall of the corresponding storage box 102 near the top. The interior of each first round pipe 209 is connected to the interior of the corresponding storage box 102. The air inlets of the two second round pipes 212 are respectively fixedly inserted through the outer walls of the two storage boxes 102 near the top. The interiors of the two second round pipes 212 are respectively connected to the interior of the two storage boxes 102. The internal components of the spraying mechanism 1 are interconnected. The spraying mechanism 1 includes a mounting base 101 and two storage boxes 102. Each storage box 102 has a fixing block 214 fixed to its outer wall. Each first connecting pipe 213 is movably fitted into the circular holes of the two fixing blocks 214. A connecting plate 218 is fixed to the surface of the mounting base 101 near the bottom. A plasma purifier 201 is mounted on top of the connecting plate 218. A dual-shaft motor 107, two pump heads 109, and an air compressor 119 are mounted on the bottom inner wall of the mounting base 101. The air inlet of the second control valve 215 is connected to another port of the air tank on the air compressor 119. A control cabinet 123 is mounted on top of the connecting plate 218.Three perforated blocks 125 are fixed near the top of the mounting base 101. Two liquid outlet pipes 111 are movably fitted into the round holes of two of the perforated blocks 125, and the feed end of the multi-stage diversion pipe 211 is movably fitted into the round hole of the other perforated block 125.

[0026] In this embodiment, when the storage box 102 needs additional coating, the two lower first control valves 210, the second control valve 215, and the plasma purifier 201 are opened. Simultaneously, the sealing plug 207 is removed from the box cover 206, and the air compressor 119 is turned on. The compressed air inside the air tank of the air compressor 119 first enters the second control valve 215 (which is now open), then the second connecting pipe 216, and then is diverted into the multi-stage diversion pipe 211. It then passes through the first control valve 210 (which is now open), enters the corresponding first circular pipe 209, and finally enters the storage box 102, blowing away the volatile organic compound gases accumulated in the empty space inside the storage box 102. The blown-out air then first enters the second circular pipe 212, then the first connecting pipe 213, and then the corrosion-resistant pipe 217. The air is collected inside the manifold 208 and then enters the plasma purifier 201. When the volatile organic compound gas enters the plasma purifier 201, the plasma purifier 201, which is activated at this time, will process the air mixed with the volatile organic compound gas. After the air is processed and discharged from the outlet of the plasma purifier 201, the purified air will first enter the connecting pipe 202, then the distributor 204, and then be transported to the processing box 203. It will come into contact with the adsorption block 205, allowing the adsorption block 205 to adsorb and remove ozone gas, carbon dioxide gas, water vapor, and carbon monoxide gas, and then be discharged into the environment. Similarly, when it is necessary to replace the storage box 102, the two first control valves 210 above are opened and the two previously opened first control valves 210 are closed. Then the above operation steps can be repeated.

[0027] The effect and working principle of the entire mechanism are as follows: Before work, remove the two check valves 104, and then inject paint into the corresponding storage box 102 through the air inlet at the top of the two box covers 103. The two paints are different colors. After the two paints have been filled, reinstall the two check valves 104 in the corresponding positions. During operation, the control cabinet 123 is used to start the robotic arm 122. The started robotic arm 122 will move the L-shaped rod 113 at its front end according to the preset program. The moving L-shaped rod 113 will move the two-color spray gun 114 and the components installed on the two-color spray gun 114. When the discharge end of the two-color spray gun 114 is aligned with the wood-plastic flooring that is in a fixed state and needs to be colored, the control cabinet 123 will stop the movement of the two-color spray gun 114. Then the control cabinet 123 will start the dual-axis motor 107 and the air compressor 119. When the dual-shaft motor 107 starts, it will rotate the shafts of the two pump heads 109 through the two couplings 108, starting the two pump heads 109 and giving suction to both feed ends of the two pump heads 109. At the same time, the control cabinet 123 will open the two first electric valves 106 and the two flow regulating valves 117 simultaneously, connecting the inside of the storage box 102 with the inside of the liquid outlet pipe 111. At this time, the feed end of the pump head 109 will cooperate with the liquid inlet pipe 110 and the first electric valve 106 to draw away the paint inside the storage box 102. Then the drawn-out paint will first enter the inside of the liquid outlet pipe 111, then the inside of the material pipe 112, then the inside of the flow regulating valve 117, then the inside of the arc pipe 116, then the inside of the one-way valve 115, and then enter the two paint channels inside the two-color spray gun 114, and continue to move towards its corresponding outlet. When the air compressor 119 starts, it filters the ambient air through the filter 120 and then draws it in. The air is then compressed and stored in the air tank on it. When compressed air is needed, the control cabinet 123 opens one of the second electric valves 121, allowing the compressed air in the air tank on the air compressor 119 to be released directly. The air then passes through the inside of the second electric valve 121, enters the inside of the air pipe 118, enters the gas passage of the two-color spray gun 114, and continues to move towards its corresponding outlet. When both paints and compressed air are sprayed from the corresponding outlets on the two-color spray gun 114, the compressed air sprayed from the two-color spray gun 114 will disperse the two paints. Then the two paints will be sprayed onto the bottom surface of the wood-plastic floor. When the bottom surface of the wood-plastic floor is sprayed, the spraying operation of the two-color spray gun 114 is stopped, and the robotic arm 122 is reset to its original position. Then the sprayed wood-plastic floor is removed, replaced with another wood-plastic floor that needs to be sprayed with two colors, and the spraying operation can continue. At the same time, the control cabinet 123 can monitor the paint delivery in real time through the pressure sensor 126, and promptly alarm the operator through the alarm 124 when a problem occurs. When the storage box 102 needs additional paint, the control cabinet 123 is used to open the two lower first control valves 210 and second control valve 215, as well as the plasma purifier 201. Simultaneously, the sealing plug 207 is removed from the cover 206, allowing compressed air from the air tank on the air compressor 119 to enter the second connecting pipe 216 through the opened second control valve 215. The compressed air then first flows into the first branch of the multi-stage branch pipe 211, then into its second branch, and finally passes through the opened first control valve 210, entering the corresponding first circular pipe 209. When the compressed air exits from the outlet of the first circular pipe 209 and enters the storage box 102, it blows away the volatile organic compound gases accumulated in the empty space inside the storage box 102, directing them into the corresponding second circular pipe 212. Air containing volatile organic compounds (VOCs) first enters the first connecting pipe 213, then flows into the corrosion-resistant pipe 217, then collects in the manifold 208, and finally enters the plasma purifier 201. When the VOCs enter the plasma purifier 201, the activated purifier creates a strong electric field between its electrodes. Free electrons in this field gain extremely high energy under the acceleration of the strong electric field, becoming "high-energy electrons." When the VOCs enter the plasma reaction zone, these high-energy electrons directly bombard the chemical bonds of the VOC molecules, breaking down stable VOC macromolecules into unstable free radicals or small molecule fragments. Simultaneously, a large number of highly oxidizing free radicals are generated in the plasma reaction zone. These reactive free radicals then react with the generated "VOC intermediates (free radicals, small molecule fragments)." A violent reaction occurs, gradually oxidizing the volatile organic compounds into simpler, harmless inorganic molecules. Some unoxidized VOC fragments or free radicals are electrostatically adsorbed by positive and negative ions in the plasma. The treated volatile organic compounds are then discharged from the outlet of the plasma purifier 201, first entering the interior of the connecting pipe 202 (at this time, the main components of the gas entering the connecting pipe 202 are carbon dioxide, water vapor, trace amounts of ozone, and a very small amount of carbon monoxide), then entering the interior of the distributor 204, and finally exiting from each outlet on it, contacting the adsorption block 205. At this time, the adsorption block 205 (activated carbon) adsorbs and removes the ozone, carbon dioxide, water vapor, and carbon monoxide. The air that has been treated again first enters the interior of the cover 206 and then is discharged into the environment. Similarly, when it is necessary to replace the storage box 102, the two first control valves 210 above are opened using the control cabinet 123, and the two previously opened first control valves 210 are closed. Then the above operation steps are repeated.

[0028] The wiring diagrams for the dual-axis motor 107, the first electric valve 106, the flow regulating valve 117, the air compressor 119, the second electric valve 121, the robotic arm 122, the control cabinet 123, the alarm 124, the pressure sensor 126, the plasma purifier 201, the first control valve 210, and the second control valve 215 are common knowledge in the field. Their working principles are well-known technologies. The appropriate model should be selected according to the actual use. The control method and wiring layout will not be explained in detail here.

[0029] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A robot for simultaneous dual-color spraying of wood-plastic composite flooring bottom surface, comprising a spraying mechanism (1), characterized in that: The spraying mechanism (1) includes a mounting base (101) and two storage boxes (102). Each storage box (102) is equipped with a box cover (103) on its top. The spraying mechanism (1) is provided with a purification mechanism (2), which is used to purify the gas volatilized from the coating. The purification mechanism (2) includes a plasma purifier (201), two sets of first circular tubes (209), and two second circular tubes (212). The inlet and outlet of the plasma purifier (201) are respectively connected to a manifold (208) and a connecting pipe (202), and the outlet of the connecting pipe (202) is connected to a distributor (204). A processing box (203) is fixed on the top of the plasma purifier (201), and an adsorption block (205) for purifying the gas is placed inside the processing box (203). The inlet of each first circular tube (209) is connected to a first control valve (210). Multiple first circular tubes (209) are connected to a first control valve (212). A multi-stage diversion pipe (211) is connected to the air inlet of a control valve (210). The air outlet of each second circular pipe (212) is connected to a first connecting pipe (213). The air inlet of the multi-stage diversion pipe (211) is connected to a second connecting pipe (216), and the air inlet of the second connecting pipe (216) is connected to a second control valve (215). The air outlet of each first connecting pipe (213) is connected to a corrosion-resistant pipe (217). The first control valve (210) is used to control the opening and closing of each air outlet of the multi-stage diversion pipe (211) for treating the volatile gases of the storage box (102) at different stages.

2. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 1, characterized in that: The outlet of the diverter (204) is fixedly inserted through the outer wall of the treatment box (203) and extends into the interior of the treatment box (203), and is embedded in the adsorption block (205) inside the treatment box (203). The top of the treatment box (203) is fitted with a box cover (206). The inside of the box cover (206) is hollow, and the bottom of the box cover (206) is provided with multiple vent holes. The top outlet of the box cover (206) is provided with a sealing plug (207).

3. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 2, characterized in that: The bottom of the box cover (206) is in contact with the top of the adsorption block (205). The two air inlets of the manifold (208) are connected to the air outlets of the two corrosion-resistant pipes (217). The air outlet of one of the first round pipes (209) in each group is fixedly penetrated through the outer wall of the corresponding storage box (102) near the bottom. The air outlet of the other first round pipe (209) in each group is fixedly penetrated through the outer wall of the corresponding storage box (102) near the top.

4. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 1, characterized in that: The interior of each of the first round tubes (209) is connected to the interior of the corresponding storage box (102). The air inlet ends of the two second round tubes (212) are fixedly inserted through the outer wall of the two storage boxes (102) near the top, and the interior of the two second round tubes (212) is connected to the interior of the two storage boxes (102).

5. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 1, characterized in that: Each of the storage boxes (102) has a fixing block (214) fixed on its outer wall. Each of the first connecting pipes (213) is movably fitted into the round holes of the two fixing blocks (214). A connecting plate (218) is fixed on the surface of the mounting base (101) near the bottom. The plasma purifier (201) is installed on the top of the connecting plate (218).

6. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 5, characterized in that: Each of the box covers (103) has a check valve (104) connected to its top air inlet. Each check valve (104) has a filter (105) attached to its air inlet end face. The bottom discharge end of each storage box (102) extends through the top of the mounting base (101). Both storage boxes (102) are mounted on the top of the mounting base (101). The bottom discharge ends of both storage boxes (102) are connected to a first electric valve (106).

7. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 6, characterized in that: The bottom of the inner wall of the mounting base (101) is equipped with a dual-shaft motor (107), two pump heads (109) and an air compressor (119). The air inlet of the second control valve (215) is connected to the other port of the air tank on the air compressor (119). A coupling (108) is installed between the main shaft end of the dual-shaft motor (107) and the rotating shaft end of one of the pump heads (109), and a coupling (108) is also installed between the auxiliary shaft end of the dual-shaft motor (107) and the rotating shaft end of the other pump head (109).

8. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 7, characterized in that: The feed ends of the two pump heads (109) are connected to the liquid inlet pipes (110), and the feed ends of the two liquid inlet pipes (110) are respectively connected to the discharge ends of the two first electric valves (106). The discharge ends of the two pump heads (109) are connected to the liquid outlet pipes (111), and the discharge ends of the two liquid outlet pipes (111) are connected to the material pipes (112). A mechanical arm (122) is installed on the top of the mounting base (101), and the mounting end of the mechanical arm (122) is located between the two storage boxes (102). An L-shaped rod (113) is fixed inside the round hole at the front end of the mechanical arm (122), and a two-color spray gun (114) is installed on the outer surface of the L-shaped rod (113) near one end.

9. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 8, characterized in that: The two feed ends of the dual-color spray gun (114) are connected to one-way valves (115), the feed ends of the two one-way valves (115) are connected to arc-shaped pipes (116), the feed ends of the two arc-shaped pipes (116) are connected to flow regulating valves (117), the discharge ends of the two material pipes (112) are respectively connected to the feed ends of the two flow regulating valves (117), the air inlet of the dual-color spray gun (114) is connected to an air pipe (118), two ports of the air storage tank on the air compressor (119) are connected to second electric valves (121), and the air outlet of one of the second electric valves (121) is connected to the air inlet of the air pipe (118).

10. The robot for simultaneous dual-color spraying of the bottom surface of wood-plastic flooring according to claim 8, characterized in that: The air compressor (119) has an air inlet connected to a filter (120). A control cabinet (123) is installed on the top of the connecting plate (218). An alarm (124) is installed on the top of the control cabinet (123). Three perforated blocks (125) are fixed on the surface of the mounting base (101) near the top. The two liquid outlet pipes (111) are respectively movably fitted into the round holes of two of the perforated blocks (125). The feed end of the multi-stage diversion pipe (211) is movably fitted into the round hole of the other perforated block (125). Pressure sensors (126) are installed at the detection ends of the two liquid outlet pipes (111).

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