Automated Spraying Device and Method for Large-Space Interior Wall Panel Painting

Abstract

This invention relates to an automated spraying device and method for large-space interior wall panel painting. The device includes a support frame, a horizontal guide rail, a screw lifting system, a rotating spraying device, and a control system. The horizontal guide rail is fixed to the upper part of the support frame and includes a guide rail body, a horizontal slide, and a first drive unit; the screw lifting system is fixed to the horizontal slide and includes a screw, a lifting slider, and a second drive unit; the rotating spraying device is fixed to the lifting slider and includes a spray head and an angle adjustment mechanism; the control system is electrically connected to the three-axis drive unit, receives painting pattern data, generates motion commands, and drives the spray head to move along a preset trajectory in the horizontal, vertical, and rotational directions. The method includes frame assembly and leveling, installation and calibration of the guide rail and lifting system, integration and connection of the spraying device, system debugging and verification, automated spraying operation, and finishing work. This invention achieves millimeter-level positioning accuracy and fine layer-by-layer spraying, significantly improving the construction efficiency and quality of large-space wall panel painting.

Description

Technical Field

[0001] This invention relates to the field of architectural decoration construction technology, specifically to an automated spraying device and method for large-space interior wall panel painting. Background Technology

[0002] With the development of the construction industry and the improvement of people's aesthetic demands, interior wall panel painting, as an important decorative method, is widely used in large public buildings, commercial spaces, and cultural venues. Wall panel painting, with its rich color expression and flexible pattern design capabilities, can create a unique visual experience and aesthetic atmosphere for interior spaces.

[0003] Currently, interior wall panel painting is mainly done manually by spraying. Workers use handheld spray guns, relying on their personal experience and manual operation to create the designs. However, this traditional manual spraying method has the following technical drawbacks: First, the construction efficiency is low, making it difficult to meet the needs of large-area operations. In large, high-ceilinged indoor environments, manual spraying requires frequent erection and movement of scaffolding, resulting in long preparation times and a limited effective working area per person. As the spraying area increases, the construction cycle is significantly extended, and labor costs rise sharply.

[0004] Secondly, the inconsistent quality of the spraying makes it difficult to guarantee the accuracy of the patterns. The reproduction of painted patterns is highly dependent on the skill level and proficiency of the workers. Differences in the techniques of different workers, as well as the cumulative fatigue of the same worker over long periods of work, can lead to problems such as uneven line thickness, blurred color boundaries, and pattern distortion. For complex and intricate designs, high-precision reproduction is difficult to achieve manually.

[0005] Third, it lacks adaptability to complex structures and is prone to spraying defects. When facing wall corners, decorative lines, or uneven surfaces, manual spraying is difficult to maintain the optimal spraying angle, which can easily lead to quality defects such as paint accumulation, incomplete coverage, and obvious overlapping marks, affecting the final decorative effect.

[0006] Fourth, multi-color painting involves complicated procedures and is difficult to coordinate. For complex painted patterns containing multiple colors, manual application requires multiple paint changes and repeated masking and protection, making the process complicated and the quality of the treatment at the color junctions difficult to control.

[0007] To address the aforementioned issues, we are attempting to introduce some mechanized auxiliary equipment, such as stationary spraying robots or track-mounted spraying devices. However, existing technical solutions still have significant shortcomings: some equipment can only achieve linear motion in a single direction, lacking multi-degree-of-freedom collaborative capabilities and unable to adapt to the drawing needs of complex patterns; while some equipment possesses multi-axis motion capabilities, its control precision is insufficient, and it lacks specialized design for the characteristics of color painting spraying processes, making it difficult to achieve fine layer-by-layer operations; furthermore, existing equipment is mostly designed for industrial coating scenarios, with poor adaptability to the large-space, multi-color, and high-precision color painting construction needs of the architectural decoration field, and a complete, replicable, standardized construction method has not yet been formed. Summary of the Invention

[0008] The present invention aims to overcome the defects of the prior art and provide an automated spraying device and method for large-space interior wall panel painting, thereby solving the above-mentioned technical problems.

[0009] To solve the above-mentioned technical problems, the present invention is implemented as follows: An automated spraying device for large-space interior wall panel painting, characterized in that it comprises: The support frame, as the basic load-bearing structure of the entire device, is used to provide a stable installation platform; A horizontal motion mechanism, mounted on the support frame, is used to drive the spraying component to move horizontally. A vertical motion mechanism is fixedly installed at the motion output end of the horizontal motion mechanism and moves synchronously along the horizontal direction with the motion output end of the horizontal motion mechanism to drive the spraying component to move along the vertical direction. A rotary spraying mechanism is installed at the execution end of the vertical motion mechanism. The rotary spraying mechanism includes a spraying head and an angle adjustment component. The angle adjustment component is used to drive the spraying head to rotate around a horizontal axis to adjust the spraying angle. The control system is electrically connected to the horizontal motion mechanism, the vertical motion mechanism, and the rotating spraying mechanism. It is used to receive preset color painting pattern data and generate motion control commands to drive the horizontal motion mechanism, the vertical motion mechanism, and the rotating spraying mechanism to move in coordination, thereby realizing automated spraying operations according to the color painting pattern data.

[0010] Furthermore, the horizontal motion mechanism is a transverse guide rail, which is fixedly installed on the upper part of the support frame. It includes a guide rail body extending in the horizontal direction, a transverse slide block that slides with the guide rail body, and a first drive unit for driving the transverse slide block to reciprocate along the guide rail body.

[0011] Furthermore, the vertical motion mechanism is a screw lifting system, which is fixedly installed on the transverse slide and moves synchronously with the transverse slide in the horizontal direction. The screw lifting system includes a screw arranged in the vertical direction, a lifting slider threaded with the screw, and a second drive unit for driving the screw to rotate. The lifting slider reciprocates in the vertical direction under the drive of the screw rotation.

[0012] Furthermore, the rotating spraying mechanism is fixedly installed on the lifting slider, moves synchronously in the vertical direction with the lifting slider, and moves synchronously in the horizontal direction with the transverse slide. The rotating spraying mechanism includes a spray head and an angle adjustment mechanism. The angle adjustment mechanism is used to drive the spray head to rotate 360° around the horizontal axis to adjust the spraying angle of the spray head relative to the wall panel surface.

[0013] Furthermore, the control system is electrically connected to the first drive unit of the transverse guide rail, the second drive unit of the screw lifting system, and the angle adjustment mechanism of the rotating spraying device. The control system is used to receive preset colored painting pattern data, parse and generate horizontal displacement commands, vertical displacement commands, and rotation angle commands, and send them to the first drive unit, the second drive unit, and the angle adjustment mechanism, respectively, to drive the transverse slide, the lifting slider, and the spraying head to move in coordination, so that the spraying head moves along a preset trajectory in the horizontal, vertical, and rotation angle directions, thereby realizing automated spraying operations according to the colored painting pattern data.

[0014] An automated spraying method for interior wall panel painting in large spaces, characterized by the following steps: Step 1: On-site assembly and leveling of the basic support frame; Step 2: Installation and calibration of the guide rail and lifting system; Step 3: Integration and electrical connection of the spraying device; Step 4: System integration and preparation for automated spraying operations; Step 5: Formal automated spraying operation.

[0015] An automated spraying method for interior wall panel painting in large spaces, characterized by: Step one specifically includes: Sub-step 1: Plan the equipment installation location based on wall dimensions and the surrounding environment; Sub-step 2: Assemble the modular support frame and connect it using bolts and pins; Sub-step 3: Level the frame and lock the casters to ensure stability; Step two specifically includes: Sub-step 1: Install the transverse guide rail onto the top of the frame to form the X-axis motion mechanism; Sub-step 2: Install the lead screw lifting system onto the transverse guide rail to form a Y-axis motion mechanism; Sub-step 3: Calibrate the transverse guide rail and lead screw lifting system to ensure motion accuracy; Step three specifically includes: Sub-step 1: Fix the rotating spraying device to the lifting plate of the screw lifting system; Sub-step 2: Connect the electrical interface and fluid interface of the rotary spraying device; Step four specifically includes: Sub-step 1: Connect the motion system and spraying system to the control host; Sub-step 2: Input the test pattern parameters into the control system and perform system integration testing; Sub-step 3: Conduct a no-load test run to verify the motion trajectory and synchronization. If the test fails, return to adjust the parameters or check the hardware until the verification is successful. Step five specifically includes: Sub-step 1: Command generation and parsing -- The control system receives the painted pattern data and generates control commands containing the spraying path, speed, and color switching points; Sub-step 2: Multi-axis collaborative precision positioning -- The control system drives the transverse guide rail and the lead screw lifting system according to the instructions, so that the rotating spraying device can move and position precisely in the X and Y directions; Sub-step 3: 3D printing-style layer-by-layer spraying -- The control system drives the nozzle of the rotating spraying device to rotate, achieving multi-angle spraying. The painted pattern is sprayed layer by layer in the order of the layered processing, and finally a complete painted effect is formed. The layering process involves dividing the painted pattern into layers based on color or area, and spraying each layer sequentially until the entire pattern is completed.

[0016] The beneficial effects of this invention are as follows: As can be seen from the above technical solution, this application provides an automated spraying device and method for large-space interior wall panel painting. Attached Figure Description

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments: Figure 1 This is a schematic diagram of the spraying device.

[0018] Figure 2 This is a schematic diagram of a lead screw lifting system.

[0019] Figure 3 This is a schematic diagram of the rotating spraying mechanism.

[0020] Figure 4 This is a flowchart of the spraying method. Detailed Implementation

[0021] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection claimed in this application. like Figure 1-4 As shown: An automated spraying device for large-space interior wall panel painting includes a support frame 1, a transverse guide rail 2 (horizontal movement mechanism), a screw lifting system 3 (vertical movement mechanism), a rotating spraying device 4, and a control system 5.

[0022] The support frame 1 serves as the basic load-bearing structure of the entire device, providing a stable installation platform. The support frame 1 is made of high-strength aluminum alloy profiles and is a modular assembly structure, allowing for expansion and contraction adjustments to suit the actual construction space. The bottom of the support frame 1 is equipped with four locking casters for easy movement and positioning of the device. The main body of the frame features a leveling mechanism, including four adjustable legs and a level, ensuring overall stability after initial positioning and preventing shaking or shifting during the spraying process.

[0023] In this embodiment, the height of the support frame 1 can be adjusted according to the height of the construction wall, ranging from 2.5m to 6m, to accommodate interior spaces with different floor heights. The width of the frame can be modularly expanded according to the width of the construction surface, with a single frame section width of 1.5m, and up to 4 sections can be spliced ​​together, for a total width of up to 6m.

[0024] The transverse guide rail 2 is fixedly mounted on the upper crossbeam of the support frame 1. The transverse guide rail 2 includes a guide rail body extending in the horizontal direction (X-axis direction), a transverse slide block that slides with the guide rail body, and a first drive unit for driving the transverse slide block to reciprocate along the guide rail body.

[0025] The guide rail body adopts a high-precision linear guide rail with a length of 6m and a straightness error of no more than 0.1mm / m. The transverse slide block slides with the guide rail body via a slider, which uses a ball-bearing linear guide pair, resulting in a low coefficient of friction and smooth movement. The first drive unit is a servo motor that drives the transverse slide block to move via a synchronous belt transmission mechanism with a transmission ratio of 1:10, enabling precise position control. The servo motor's encoder resolution is 10,000 pulses / revolution. Combined with the synchronous belt transmission, the positioning accuracy of the transverse slide block can reach ±0.5mm, and the repeatability can reach ±0.1mm, meeting the positioning accuracy requirements of complex patterns.

[0026] The maximum moving speed of the transverse slide is 1 m / s, and the speed can be steplessly adjusted according to the requirements of the spraying process. During spraying operations, the typical moving speed is set to 0.2 m / s to 0.5 m / s to ensure spraying quality.

[0027] The lead screw lifting system 3 is fixedly installed on the transverse slide and moves synchronously with the transverse slide along the horizontal direction (X-axis). The lead screw lifting system 3 includes a lead screw arranged in the vertical direction (Y-axis direction), a lifting slider threaded with the lead screw, a second drive unit for driving the lead screw to rotate, and a guide rod.

[0028] The lead screw is a ball screw with a nominal diameter of 32mm, a lead of 10mm, and a precision grade of C5, ensuring transmission accuracy and efficiency. The lifting slider is threaded onto the lead screw via ball nuts and slides onto two guide rods via linear bearings. The guide rods are symmetrically arranged on both sides of the lead screw to ensure smooth movement of the lifting slider and resistance to eccentric loads.

[0029] The second drive unit is a servo motor, directly connected to a lead screw via a coupling. The servo motor's encoder resolution is 10,000 pulses / revolution. Combined with ball screw transmission, the positioning accuracy of the lifting slider can reach ±0.1mm, and the repeatability can reach ±0.05mm. The maximum lifting speed of the lifting slider is 0.5m / s, and the typical spraying speed is 0.1m / s to 0.3m / s.

[0030] The screw lifting system 3 has a self-locking capability. Because the friction angle of the ball screw is smaller than the helix angle, the lifting slider can maintain its position in the event of a power outage or pause, ensuring construction safety and continuity. The lifting stroke of the screw lifting system 3 is 4m, which can cover most of the height range of indoor walls.

[0031] The rotary spraying device 4 is fixedly mounted on the lifting slider and moves synchronously along the vertical direction (Y-axis) with the lifting slider, and moves synchronously along the horizontal direction (X-axis) with the transverse slide. The rotary spraying device 4 includes a spray head, an angle adjustment mechanism, and a high-pressure pumping system.

[0032] The angle adjustment mechanism includes a rotary motor and a transmission mechanism. The rotary motor is a stepper motor with a step angle of 1.8°, and is connected to the transmission mechanism via a reducer (reduction ratio of 10:1), achieving an angle resolution of 0.18°. The transmission mechanism is a worm gear mechanism, with its output end fixedly connected to the spray head, driving the spray head to rotate 360° around a horizontal axis (parallel to the X-axis), with an adjustable rotation speed range of 0~90° / s.

[0033] The spray head supplies paint via a high-pressure pumping system. This system includes a paint tank, a high-pressure pump, a delivery pipeline, and a pressure regulating valve. The operating pressure is adjustable within the range of 0.1~0.5MPa to ensure the paint is fully atomized, forming a uniform and smooth coating. The spray head has a nozzle diameter of 1.0mm, a spray width of 100~300mm (adjustable according to spray distance and angle), and a single spray thickness of 0.05~0.2mm.

[0034] In this embodiment, the rotary spraying device 4 is equipped with three spray heads arranged in parallel, each corresponding to a different color paint supply pipeline, which can support multi-color simultaneous operation and further improve construction efficiency.

[0035] The control system 5 is electrically connected to the first drive unit of the transverse guide rail 2, the second drive unit 33 of the screw lifting system 3, and the angle adjustment mechanism (rotary motor) of the rotary spraying device 4.

[0036] The control system 5 includes an industrial control computer, a motion control card, a servo driver, a stepper driver, and a human-machine interface. The software component of the control system 5 includes: Data input module: This module receives digital files of painted patterns (supporting BMP, JPG, PNG, and other formats) and related spraying parameters (spraying path, speed, color switching points, etc.). Operators can upload graphic files via computer or mobile device and set spraying parameters on the human-machine interface.

[0037] Path planning module: This module parses the painted pattern data and converts the image into spraying trajectory data. It employs a layered processing algorithm, which can divide the painted pattern into layers based on color or region, generating sequential spraying instructions for each layer. For each layer, the path planning module generates horizontal displacement instructions (X-axis), vertical displacement instructions (Y-axis), and rotation angle instructions (Z-axis), forming a three-dimensional motion trajectory.

[0038] Motion control module: used to send the horizontal displacement command to the first drive unit (transverse guide rail servo driver), the vertical displacement command to the second drive unit (screw lifting servo driver), and the rotation angle command to the angle adjustment mechanism (rotary motor stepper driver), driving the transverse slide, lifting slider and spray head to move in coordination, so that the spray head moves along a preset trajectory in the horizontal, vertical and rotational directions.

[0039] Spraying control module: Used to control the start and stop of the spray head, the pressure regulation of the high-pressure pumping system, and the color switching during multi-color spraying. The spraying control module is synchronized with the motion control module to ensure that spraying starts and stops at the correct position, avoiding missed spraying or re-spraying.

[0040] Control system 5 employs a "3D printing" style layer-by-layer spraying control logic: For a complex painted pattern, the pattern is first layered by color. Then, the control equipment first completely sprays the first layer of color, and then sprays the second and third layers according to instructions, until the entire pattern is completed. During the spraying process of each layer, control system 5 coordinates the X, Y, and Z axis movements in real time to ensure that the spray head is always facing the spraying surface, thus guaranteeing spraying quality even on wall edges or uneven surfaces.

[0041] The three-dimensional motion transmission relationship of the device described in this embodiment is as follows: Horizontal (X-axis) movement: The first drive unit drives the transverse slide to move along the guide rail body, and the entire screw lifting system 3, the lifting slider, the rotating spraying device 4 and the spraying head move synchronously along the X-axis.

[0042] Vertical (Y-axis) movement: The second drive unit drives the lead screw to rotate, the lifting slider moves along the lead screw and guide rod, and the rotating spraying device 4 and the spraying head move synchronously along the Y-axis.

[0043] Rotational direction (Z-axis) movement: The rotary motor drives the spray head to rotate around the horizontal axis through the transmission mechanism, thereby adjusting the spraying angle.

[0044] Through the coordinated control of the above three-axis motion, the spray head can move precisely in three-dimensional space according to a preset trajectory, achieving a layer-by-layer fine spraying effect similar to "3D printing".

[0045] An automated spraying method for large-space interior wall panel painting includes the following steps: Step 1: On-site assembly and leveling of the basic support frame Plan the equipment installation location: Determine the distance between the device and the wall based on the wall size and construction environment, usually 300 to 500 millimeters, and check the flatness of the ground.

[0046] Assemble the modular support frame: High-strength aluminum alloy profiles are assembled using bolts, pins, and other connectors. The number of sections to be assembled is selected according to the width of the wall. Each frame section is 1.5 meters wide, and a maximum of four sections can be assembled. Install the upper crossbeam to provide the installation foundation for the horizontal guide rails.

[0047] Level the frame and lock the casters: Use the four adjustable feet of the leveling mechanism, along with a level, to adjust the frame to a level position, ensuring overall stability. After adjustment, lock the casters to prevent the device from moving.

[0048] Step Two: Installation and Calibration of Guide Rails and Lifting System Install the horizontal guide rails: Install the horizontal guide rails onto the upper crossbeam of the support frame, ensuring that the guide rail body is horizontal and parallel to the wall. Use a level and ruler to calibrate the straightness and levelness of the guide rails. The guide rail length can be up to six meters, and the straightness error should not exceed 0.1 millimeters per meter.

[0049] Install the screw jacking system: Mount the screw jacking system onto the transverse slide of the transverse guide rail and secure it with bolts. Install the guide rod and screw, ensuring the screw is perpendicular to the ground. The lifting stroke is four meters.

[0050] Calibrate the guide rails and lifting system: Perform a no-load test on the control system to check whether the movement of the lateral slide and the lifting slider is smooth and whether the position feedback is accurate. Use a laser tracker or dial indicator to measure the actual motion accuracy, and adjust the servo parameters if necessary to ensure that the lateral positioning accuracy reaches ±0.5 mm and the vertical positioning accuracy reaches ±0.1 mm.

[0051] Step 3: Integration and electrical connection of the spraying device Fixed rotating spraying device: Fix the rotating spraying device to the lifting slider of the screw lifting system, and use high-strength bolts to ensure a firm connection.

[0052] Connect the electrical and fluid interfaces: Connect the electrical and fluid interfaces of the rotary spraying unit. The electrical interfaces include the power and signal lines of the rotary motor; the fluid interfaces include the paint supply lines and compressed air lines of the high-pressure pumping system. Check the sealing and reliability of all interfaces. The operating pressure of the high-pressure pumping system is adjustable within the range of 0.1 to 0.5 MPa.

[0053] Step 4: System Integration and Preparation for Automated Spraying Operation Connect the motion system and spraying system to the control system: Connect the motion system and spraying system of the transverse guide rail, screw lifting system, and rotating spraying device to the control system of the main control unit. Check the electrical connections, encoder feedback, and limit switches of each drive unit to ensure that the first drive unit, the second drive unit, and the rotary motor are all electrically connected to the control system.

[0054] System integration and input of test pattern parameters: Input test pattern parameters into the control system, select simple geometric shapes such as squares or circles as test patterns, and set parameters such as spraying path and speed.

[0055] No-load test run and verification of motion trajectory and synchronization: Start the control system and observe whether the motion trajectory of the transverse slide, lifting slider and spray head is consistent with the preset trajectory, and check the synchronization of the motion of each axis. Use a laser tracker to record the actual motion trajectory and compare it with the theoretical trajectory.

[0056] Decision verification: If the test fails, i.e. the trajectory deviation exceeds plus or minus one millimeter or the synchronization does not meet the requirements, return to adjust the motion parameters of the control system such as gain and acceleration / deceleration time, or check the mechanical installation such as guide rail parallelism and lead screw perpendicularity, and then repeat the no-load test run until the verification is successful.

[0057] Step 5: Formal Automated Spraying Operation Command Generation and Parsing: Operators upload digital files of the painted patterns to be sprayed through the human-machine interface of the control system. The path planning module of the control system automatically parses the pattern data and generates a complete control program containing horizontal displacement commands, vertical displacement commands, and rotation angle commands based on preset spraying parameters such as spraying speed of 0.3 meters per second, single-layer thickness of 0.1 millimeters, and number of color layers.

[0058] Multi-axis coordinated precise positioning: The motion control module of the control system sends commands to the first drive unit, the second drive unit, and the rotary motor. The first drive unit drives the horizontal slide to move horizontally to the starting position, the second drive unit drives the lifting slider to move vertically to the starting height, and the rotary motor drives the spray head to rotate to the starting angle, typically zero degrees directly facing the wall. The three axes move simultaneously or sequentially, achieving precise positioning of the spray head in three-dimensional space.

[0059] 3D printing-style layer-by-layer spraying: The control system executes the spraying operation layer by layer according to the order of the layer processing.

[0060] Layered processing: For complex patterns containing multiple colors, the control system layers the pattern according to color. For example, a pattern containing red, yellow, and blue is divided into three layers: the first layer is red, the second layer is yellow, and the third layer is blue.

[0061] Layer-by-layer spraying process: During the first coat of paint, the control system controls the high-pressure pump system to supply red paint, drives the horizontal slide and the lifting slider to move along a preset trajectory, and at the same time the rotary motor adjusts the angle of the spray head in real time to keep it facing the wall, thus completing the spraying of the entire first red area.

[0062] During the second coat application, the system switches to yellow paint and directs the spray head along the second coat's trajectory to complete the yellow area application. At the color boundary, the control system precisely controls the spray head's start, stop, and rotation angle to prevent color mixing and blurred boundaries.

[0063] For the third coat, switch to blue paint and repeat the above process to complete the third coat.

[0064] Quality assurance measures: In terms of uniform atomization, the high-pressure pumping system maintains a constant pressure of 0.3 MPa to ensure that the coating is fully atomized and forms a uniform coating with a single spray thickness of 0.05 to 0.2 mm.

[0065] To avoid dead corners and overlaps, the spray head's 360-degree rotation capability ensures it always faces the sprayed surface directly. At inside corners, the rotary motor drives the spray head to rotate 45 degrees, aligning the nozzle with the inside of the corner; at outside corners, it rotates to -45 degrees to ensure corner coverage. On uneven walls, the angle is adjusted in real time according to the surface normal to avoid paint buildup or incomplete coverage due to improper angle.

[0066] In terms of multi-color parallel optimization, when using three parallel spray heads, three colors can be sprayed simultaneously in one stroke, further improving efficiency.

[0067] Step Six: Finishing Touches After completing all spraying operations, shut off the high-pressure pump system, raise the lifting slider to its highest position, and move the horizontal slide to one end of the guide rail. Clean the spray head and paint pipeline, and drain any remaining paint. Unlock the casters and move the device out of the work area to complete the equipment removal.

[0068] The above are merely embodiments provided in this application and are not intended to limit this application. Although this application has been described in detail with reference to the 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. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An automated spraying device for large-space interior wall panel painting, characterized in that, include: The support frame, as the basic load-bearing structure of the entire device, is used to provide a stable installation platform; A horizontal motion mechanism, mounted on the support frame, is used to drive the spraying component to move horizontally. A vertical motion mechanism is fixedly installed at the motion output end of the horizontal motion mechanism and moves synchronously along the horizontal direction with the motion output end of the horizontal motion mechanism to drive the spraying component to move along the vertical direction. A rotary spraying mechanism is installed at the execution end of the vertical motion mechanism. The rotary spraying mechanism includes a spray head and an angle adjustment component. The angle adjustment component is used to drive the spray head to rotate around a horizontal axis to adjust the spraying angle. The control system is electrically connected to the horizontal motion mechanism, the vertical motion mechanism, and the rotating spraying mechanism. It is used to receive preset color painting pattern data and generate motion control commands to drive the horizontal motion mechanism, the vertical motion mechanism, and the rotating spraying mechanism to move in coordination, thereby realizing automated spraying operations according to the color painting pattern data.

2. The automated spraying device for large-space interior wall panel painting according to claim 1, characterized in that: The horizontal motion mechanism is a transverse guide rail, which is fixedly installed on the upper part of the support frame. It includes a guide rail body extending in the horizontal direction, a transverse slide block that slides with the guide rail body, and a first drive unit for driving the transverse slide block to reciprocate along the guide rail body.

3. The automated spraying device for large-space interior wall panel painting according to claim 2, characterized in that: The vertical motion mechanism is a screw lifting system, which is fixedly installed on the horizontal slide and moves synchronously with the horizontal slide in the horizontal direction. The screw lifting system includes a screw arranged in the vertical direction, a lifting slider threaded with the screw, and a second drive unit for driving the screw to rotate. The lifting slider moves back and forth in the vertical direction under the drive of the screw rotation.

4. The automated spraying device for large-space interior wall panel painting according to claim 3, characterized in that: The rotating spraying mechanism is fixedly installed on the lifting slider and moves synchronously in the vertical direction with the lifting slider, and moves synchronously in the horizontal direction with the transverse slide. The rotating spraying mechanism includes a spray head and an angle adjustment mechanism. The angle adjustment mechanism is used to drive the spray head to rotate 360° around the horizontal axis to adjust the spraying angle of the spray head relative to the wall panel surface.

5. The automated spraying device for large-space interior wall panel painting according to claim 4, characterized in that: The control system is electrically connected to the first drive unit of the transverse guide rail, the second drive unit of the screw lifting system, and the angle adjustment mechanism of the rotating spraying device. The control system is used to receive preset color painting pattern data, parse and generate horizontal displacement commands, vertical displacement commands, and rotation angle commands, and send them to the first drive unit, the second drive unit, and the angle adjustment mechanism, respectively, to drive the transverse slide, the lifting slider, and the spraying head to move in coordination, so that the spraying head moves along a preset trajectory in the horizontal, vertical, and rotation angle directions, thereby realizing automated spraying operation according to the color painting pattern data.

6. An automated spraying method for large-space interior wall panel painting, characterized in that... Includes the following steps: Step 1: On-site assembly and leveling of the basic support frame; Step 2: Installation and calibration of the guide rail and lifting system; Step 3: Integration and electrical connection of the spraying device; Step 4: System integration and preparation for automated spraying operations; Step 5: Formal automated spraying operation.

7. The automated spraying method for large-space interior wall panel painting according to claim 6, characterized in that: Step one specifically includes: Sub-step 1: Plan the equipment installation location based on wall dimensions and the surrounding environment; Sub-step 2: Assemble the modular support frame and connect it using bolts and pins; Sub-step 3: Level the frame and lock the casters to ensure stability; Step two specifically includes: Sub-step 1: Install the transverse guide rail onto the top of the frame to form the X-axis motion mechanism; Sub-step 2: Install the lead screw lifting system onto the transverse guide rail to form a Y-axis motion mechanism; Sub-step 3: Calibrate the transverse guide rail and lead screw lifting system to ensure motion accuracy; Step three specifically includes: Sub-step 1: Fix the rotating spraying device to the lifting plate of the screw lifting system; Sub-step 2: Connect the electrical interface and fluid interface of the rotary spraying device; Step four specifically includes: Sub-step 1: Connect the motion system and spraying system to the control host; Sub-step 2: Input the test pattern parameters into the control system and perform system integration testing; Sub-step 3: Conduct a no-load test run to verify the motion trajectory and synchronization. If the test fails, return to adjust the parameters or check the hardware until the verification is successful. Step five specifically includes: Sub-step 1: Command generation and parsing -- The control system receives the painted pattern data and generates control commands containing the spraying path, speed, and color switching points; Sub-step 2: Multi-axis collaborative precision positioning -- The control system drives the transverse guide rail and the lead screw lifting system according to the instructions, so that the rotating spraying device can move and position precisely in the X and Y directions; Sub-step 3: 3D printing-style layer-by-layer spraying -- The control system drives the nozzle of the rotating spraying device to rotate, achieving multi-angle spraying. The painted pattern is sprayed layer by layer in the order of the layered processing, and finally a complete painted effect is formed. The layering process involves dividing the painted pattern into layers based on color or area, and spraying each layer sequentially until the entire pattern is completed.

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