Pattern laser etching and spraying process

Abstract

The invention discloses a pattern laser etching and spraying process which comprises the following steps: cleaning treatment: cleaning the surface of a workpiece, removing impurities such as oil stains, dust and the like, polishing, then polishing to enable the surface roughness to reach a range suitable for subsequent processing, laser etching a pattern, and engraving a required pattern outline on the surface of the workpiece by utilizing laser etching equipment. The production efficiency and precision are improved, manual intervention is reduced, a conveying device in the key procedure rapidly and accurately feeds materials, the production efficiency is improved compared with a traditional technology, and the product machining precision is greatly improved; the product quality stability is guaranteed, the full-automatic process avoids human factor interference, the process adaptability and flexibility are enhanced, the device is suitable for workpieces made of various materials, and the process parameters and the process can be rapidly adjusted according to product requirements.

Description

Technical Field

[0001] The invention relates to a surface treatment process related field, in particular to a pattern laser carving spraying process. Background Art

[0002] In modern industrial production, the demand for pattern processing on product surfaces is growing. Traditional pattern processing methods such as printing and stickers have certain limitations in durability, precision and texture. Laser engraving technology can achieve high-precision pattern engraving. Spray painting laser engraving technology combines the layering of traditional spray painting technology with the precision of laser engraving technology. Spray painting laser engraving technology gives products a unique and beautiful appearance, making the products more recognizable and attractive.

[0003] Although spray painting laser engraving technology has many advantages, it still faces some challenges and difficulties in the actual construction process. Among them, when performing laser engraving spraying on patterns on precision instrument casings made of metal materials, workers are generally required to manually transport the precision instrument casings made of metal materials to various processing equipment. This method is not only inefficient, but also easy to cause bumps and scratches on the workpiece due to human negligence, thereby affecting the surface quality of the product and subsequent processing effects. The transportation between the various processing links lacks automation. Summary of the invention

[0004] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a pattern laser engraving spraying process.

[0005] The present invention is implemented by constructing a pattern laser engraving spraying process, comprising the following steps:

[0006] Loading: the workpieces to be processed are moved from the material storage area to the feed conveyor belt by an automated loading robot;

[0007] Cleaning: clean the surface of the workpiece to remove impurities such as oil, dust, etc.

[0008] Grinding treatment, followed by grinding treatment, to make the surface roughness reach a range suitable for subsequent processing;

[0009] Laser engraving: using laser engraving equipment to carve the desired pattern outline on the surface of the workpiece;

[0010] Depth adjustment: During the laser engraving process, the laser engraving processing depth can be accurately adjusted through the control system of the laser engraving equipment according to factors such as the workpiece material, pattern design requirements, and subsequent coating thickness;

[0011] Primer spraying: spray primer on the surface of the workpiece after laser engraving;

[0012] Topcoat spraying: spray topcoat according to pattern color requirements;

[0013] Curing and quality inspection: Curing and quality inspection of the workpiece after spraying to ensure that the clarity of the pattern, color consistency and coating adhesion meet the requirements;

[0014] Unloading: According to the quality inspection results, qualified products and unqualified products are classified and unloaded through the automatic unloading mechanism. Qualified products are collected and packaged, and unqualified products are returned for repair or scrapped according to the predetermined standards;

[0015] During the entire process, the workpiece is transported between each processing link using an automated intermittent conveying device, which can smoothly and accurately transport the workpiece to the corresponding processing position, and keep it at the corresponding processing position for an appropriate time, reserving sufficient processing time for the corresponding processing steps, and preventing the workpiece surface from being damaged by collision, scratches, etc. during transportation.

[0016] Preferably, in the cleaning step, chemical cleaning, ultrasonic cleaning or other equivalent cleaning methods are used to ensure that the surface cleanliness of the workpiece meets the requirements of subsequent processing and does not damage the workpiece material. After the cleaning process is completed, the workpiece is transported to the polishing station through an automated intermittent conveying device. The conveying speed is reasonably adjusted according to the production rhythm and equipment layout to ensure the continuity and efficiency of production.

[0017] Preferably, in the polishing step, sandpaper polishing, mechanical polishing or other polishing methods that can make the surface roughness reach a preset range are used. The preset range is determined according to the material of the workpiece and the adhesion requirements of the subsequent coating. The flatness and uniformity of the workpiece surface must be ensured during the polishing process. After polishing is completed, the workpiece is transferred to the laser engraving station by an automated intermittent conveying device. The workpiece is kept in a stable state during the conveying process to prevent uneven polishing due to shaking.

[0018] Preferably, in the laser engraving pattern step, the laser parameters of the laser engraving equipment can be accurately and dynamically adjusted according to the workpiece material, pattern complexity and precision requirements, wherein the adjustment of the laser engraving processing depth is achieved by changing the energy density, pulse width or pulse number of the laser pulse through the control system of the laser engraving equipment to ensure that the pattern lines are clear, the edges are neat and the damage to the workpiece substrate is minimal, while meeting the requirements of the subsequent coating for the laser engraving depth. For example, the laser engraving depth is appropriately increased in areas that require thicker coating coverage to enhance the adhesion of the coating, while the laser engraving depth is reduced in areas where higher surface flatness requirements are required. After the laser engraving is completed, the workpiece is transported to the primer spraying area through an automated intermittent conveying device, and the conveying path is optimized to prevent dust and other impurities from contaminating the workpiece surface and affecting the subsequent coating quality.

[0019] Preferably, in the primer spraying step, the selection of the primer is based on good compatibility and adhesion with the workpiece material and subsequent coatings, the composition and performance indicators of the primer must meet specific industry standards or be verified by experiments, the primer spraying adopts electrostatic spraying, air spraying or other methods that can ensure that the primer is evenly covered on the workpiece surface and the laser engraved pattern, and the spraying thickness and drying conditions can be precisely controlled. After the primer spraying is completed, the workpiece is moved to the topcoat spraying position by an automated intermittent conveying device, and the primer coating is ensured not to be damaged during the conveying process. At the same time, the temperature and humidity of the workpiece are controlled to make it in a state suitable for topcoat spraying.

[0020] Preferably, in the topcoat spraying step, the color combination and spraying method of the topcoat can achieve complex color effects through regional spraying, multiple color spraying or other equivalent process means. The topcoat spraying method and parameters, such as spray gun pressure, spraying distance, spray gun movement speed, etc., can be adjusted according to the type of topcoat and pattern design requirements to ensure that the topcoat can cover the primer and present a bright, full and lasting color effect. After the topcoat spraying is completed, the workpiece is transported to the curing area through an automated intermittent conveying device. The workpiece is kept stable during the conveying process to prevent the topcoat from flowing or defects.

[0021] Preferably, in the curing treatment step, a suitable curing method is selected according to the type of topcoat, including but not limited to thermal curing, ultraviolet curing, electron beam curing, etc. Curing conditions such as temperature, time, light intensity, radiation dose, etc. should be strictly controlled within a predetermined range, which is determined according to the curing characteristics of the topcoat and the coating performance requirements to ensure that the topcoat is fully cured and improve the hardness, wear resistance, corrosion resistance and weather resistance of the coating. After curing is completed, an automated intermittent conveying device transports the workpiece to the quality inspection area to avoid the influence of external factors on the cured coating during the conveying process.

[0022] Preferably, the quality inspection step includes inspections of pattern clarity, color consistency, coating adhesion, hardness, wear resistance, corrosion resistance, weather resistance and other indicators. The inspection method adopts industry standard inspection means or verified equivalent inspection methods. Unqualified products can be effectively repaired or scrapped according to predetermined standards to ensure the quality stability and reliability of the final product. After the inspection is completed, qualified products are classified, collected and packaged through an automated intermittent conveying device to ensure that the appearance quality of the product is not damaged during the conveying process.

[0023] Preferably, the process is applicable to workpieces of various materials such as metal, plastic, ceramic, glass, etc. For workpieces of different materials, the process parameters can be optimized and adjusted according to the characteristics of the material to achieve the best pattern processing effect, and the patterns processed on workpieces of different materials can meet the corresponding product quality standards and usage requirements. During the processing of workpieces of different materials, the automated intermittent conveying device can be adaptively adjusted according to the size, shape and weight of the workpiece to ensure the smoothness and reliability of the conveying.

[0024] Preferably, the process can be automated, semi-automated or manually operated in an industrial production environment, and the operating procedures and equipment configuration can be flexibly adjusted according to the production scale and production efficiency requirements, while ensuring the stability of the process and the consistency of product quality, and can be effectively integrated and compatible with existing production equipment and production lines. The automated intermittent conveying device serves as a connecting link in the entire production process, and its control system can achieve data exchange and collaborative work with the control systems of other equipment, thereby improving the intelligence level of the production process.

[0025] The present invention has the following advantages: The present invention provides a pattern laser engraving spraying process through improvement, which has the following improvements compared with the same type of equipment:

[0026] The fully automated process starting from workpiece loading effectively avoids the interference of human factors on product quality. The precise operation during loading and unloading and the stable transportation between each processing link prevent the collision, scratch and contamination of the workpiece, ensuring the integrity and cleanliness of the product surface. With the precise adjustment of the laser engraving processing depth and the strict control of coating spraying, the key quality indicators of the product such as pattern clarity, color consistency and coating adhesion are reliably guaranteed, and the stability of product quality is greatly improved, meeting the strict quality requirements of high-end products such as precision instruments.

[0027] This process is suitable for workpieces of various materials. Through precise optimization and adjustment of various process parameters, it can meet the differences in physical and chemical properties of different materials and achieve high-quality pattern processing effects. At the same time, the control device of the automation equipment has good flexibility and can quickly adjust the process parameters and production processes according to different product designs and production requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a flow chart of the present invention;

[0029] Figure 2 It is the process diagram of the present invention; DETAILED DESCRIPTION

[0030] The following will be combined with the attached Figure 1 and attached Figure 2The present invention is described in detail, and the technical solutions in the embodiments of the present invention are clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] See also Figure 1 and Figure 2 As shown, a pattern laser engraving spraying process of the present invention comprises the following steps:

[0032] Loading: the workpieces to be processed are moved from the material storage area to the feed conveyor belt by an automated loading robot;

[0033] Cleaning: clean the surface of the workpiece to remove impurities such as oil, dust, etc.

[0034] Grinding treatment, followed by grinding treatment, to make the surface roughness reach a range suitable for subsequent processing;

[0035] Laser engraving: using laser engraving equipment to carve the desired pattern outline on the surface of the workpiece;

[0036] Depth adjustment: During the laser engraving process, the laser engraving processing depth can be accurately adjusted through the control system of the laser engraving equipment according to factors such as the workpiece material, pattern design requirements, and subsequent coating thickness;

[0037] Primer spraying: spray primer on the surface of the workpiece after laser engraving;

[0038] Topcoat spraying: spray topcoat according to pattern color requirements;

[0039] Curing and quality inspection: Curing and quality inspection of the workpiece after spraying to ensure that the clarity of the pattern, color consistency and coating adhesion meet the requirements;

[0040] Unloading: According to the quality inspection results, qualified products and unqualified products are classified and unloaded through the automatic unloading mechanism. Qualified products are collected and packaged, and unqualified products are returned for repair or scrapped according to the predetermined standards;

[0041] During the entire process, the workpiece is transported between each processing link using an automated intermittent conveying device, which can smoothly and accurately transport the workpiece to the corresponding processing position, and keep it at the corresponding processing position for an appropriate time, reserving sufficient processing time for the corresponding processing steps, and preventing the workpiece surface from being damaged by collision, scratches, etc. during transportation.

[0042] In this implementation scheme: when laser engraving and spraying are performed on the shell of a precision instrument made of metal material, the size of the shell of the precision instrument made of metal material is 250mm×150mm×10mm, and an automatic loading robot is used to load the workpiece. The robot is equipped with a visual recognition system and an adaptive grasping device. The visual recognition system can quickly and accurately identify the shape, position and posture of the workpiece, and the adaptive grasping device automatically adjusts the grasping force and angle according to the size and weight of the workpiece, and gently and accurately grasps the metal shell from the raw material storage area and places it on the feed conveyor belt of the ultrasonic cleaning machine. The loading speed is 0.4m / s. The whole process is smooth and efficient, avoiding any bumps or damage to the workpiece, and preparing for subsequent cleaning processes.

[0043] During the cleaning process, chemical cleaning, ultrasonic cleaning or other equivalent cleaning methods are used to ensure that the surface cleanliness of the workpiece meets the requirements of subsequent processing and does not damage the workpiece material. After the cleaning process is completed, the workpiece is transported to the polishing station through an automated intermittent conveying device. The conveying speed is reasonably adjusted according to the production rhythm and equipment layout to ensure the continuity and efficiency of production.

[0044] In this implementation scheme: the workpiece enters the ultrasonic cleaning machine with the conveyor belt, and a high-efficiency cleaning agent specifically for metal materials is added to the cleaning machine. The ultrasonic frequency is set to 50kHz, the power is 600W, and the cleaning time is 25 minutes. The high-frequency vibration of the ultrasonic wave allows the cleaning agent to fully act on the surface of the shell, effectively removing oil, dust and other impurities, ensuring that the surface cleanliness meets the subsequent processing requirements and will not cause damage to the metal material. After cleaning, the automatic intermittent conveying device transports the shell to the polishing station.

[0045] During the polishing process, sandpaper polishing, mechanical polishing or other polishing methods are used to make the surface roughness reach a preset range. The preset range is determined according to the workpiece material and the adhesion requirements of the subsequent coating. The flatness and uniformity of the workpiece surface must be ensured during the polishing process. After polishing, the workpiece is transferred to the laser engraving station by an automated intermittent conveying device. The workpiece is kept stable during the conveying process to prevent uneven polishing due to shaking.

[0046] In this implementation scheme: use 1000 mesh sandpaper and high-precision automatic polishing equipment to polish the surface of the shell for 4 minutes, so that the surface roughness reaches Ra0.8-Ra1.0μm, ensure the flatness and uniformity during the polishing process, and avoid defects such as scratches. During the polishing process, the automated intermittent conveying device firmly fixes the shell to prevent uneven polishing due to shaking. After the polishing is completed, the conveying device transfers the shell to the laser engraving station at a speed of 0.4m / s and stays at the laser engraving station for 3 seconds to ensure that the shell is accurately positioned and stable.

[0047] In the laser engraving pattern step, the laser parameters of the laser engraving equipment can be accurately and dynamically adjusted according to the workpiece material, pattern complexity and precision requirements. Among them, the adjustment of the laser engraving processing depth is achieved by changing the energy density, pulse width or pulse number of the laser pulse through the control system of the laser engraving equipment to ensure the effect of clear pattern lines, neat edges and minimal damage to the workpiece substrate, while meeting the requirements of subsequent coatings for laser engraving depth. For example, the laser engraving depth is appropriately increased in areas that require thicker coating coverage to enhance coating adhesion, while the laser engraving depth is reduced in areas with higher requirements for surface flatness. After the laser engraving is completed, the workpiece is transported to the primer spraying area through an automated intermittent conveying device. The conveying path is optimized to prevent dust and other impurities from contaminating the workpiece surface and affecting the subsequent coating quality.

[0048] In this implementation scheme: a fiber laser laser engraving machine is selected. According to the characteristics of the metal material and the requirements of the pattern design, the laser power is set to 20W, the pulse frequency is 20kHz, and the scanning speed is 500mm / s. Precise scale marks and instrument models and other patterns are engraved on the surface of the shell. The pattern line width is controlled at 0.15mm and the depth is 0.06mm. The laser engraving processing depth is accurately adjusted through the control system of the laser engraving equipment. For example, the laser engraving depth is appropriately increased to 0.07mm in the scale mark area to enhance the adhesion and clarity of the subsequent coating, while the depth of 0.06mm is maintained in the text area such as the instrument model to ensure surface flatness. After the laser engraving is completed, the conveying device transports the shell to the primer spraying area at a speed of 0.5m / s. The conveying path passes through a closed dustproof channel to prevent dust and other impurities from contaminating the shell surface and affecting the quality of the subsequent coating, and stays in the primer spraying area for 4 seconds.

[0049] In the primer spraying step, the selection of primer is based on good compatibility and adhesion with the workpiece material and subsequent coatings. The composition and performance indicators of the primer must meet specific industry standards or be verified by experiments. The primer spraying adopts electrostatic spraying, air spraying or other methods that can ensure that the primer is evenly covered on the workpiece surface and the laser engraved pattern, and the spraying thickness and drying conditions can be precisely controlled. After the primer spraying is completed, the workpiece is moved to the topcoat spraying position by an automated intermittent conveying device. During the transportation process, the primer coating is ensured not to be damaged. At the same time, the temperature and humidity of the workpiece are controlled to make it in a state suitable for topcoat spraying.

[0050] In this implementation scheme: select epoxy primer with good compatibility with metal materials and subsequent coatings, excellent adhesion and anti-rust performance, adopt electrostatic spraying, set the spray gun voltage to 60kV, maintain the spraying distance at 200mm, and the spray gun moving speed is 320mm / s, so that the primer is evenly covered on the shell surface and the laser engraved pattern, and the primer spraying thickness is controlled at about 18μm. Bake at 70℃ for 35 minutes to dry and solidify it. During the primer spraying process, the automated intermittent conveying device ensures the stability of the shell to avoid uneven primer spraying. After the primer spraying is completed, the conveying device transfers the shell to the topcoat spraying position, and the transfer speed is 0.4m / s. During the transfer process, the temperature of the shell is controlled at about 28℃ and the humidity is controlled at about 45% by the temperature control device, so that it is in a state suitable for topcoat spraying, and stays at the topcoat spraying position for 5 seconds.

[0051] In the topcoat spraying step, the color combination and spraying method of the topcoat can achieve complex color effects through regional spraying, multiple color spraying or other equivalent process means. The topcoat spraying method and parameters, such as spray gun pressure, spraying distance, spray gun movement speed, etc., can be adjusted according to the type of topcoat and pattern design requirements to ensure that the topcoat can cover the primer and present a bright, full and lasting color effect. After the topcoat spraying is completed, the workpiece is transported to the curing area through an automated intermittent conveying device. The workpiece is kept stable during the conveying process to prevent the topcoat from flowing or defects.

[0052] In this implementation scheme: according to the use environment and appearance design requirements of the precision instrument, a fluorocarbon topcoat that is wear-resistant, chemical-resistant and has good gloss is selected for spraying. A combination of regional spraying and multiple color spraying is adopted. First, a layer of light gray topcoat is sprayed as the base color. The spray gun pressure is 0.4MPa, the spraying distance is 170mm, the spray gun movement speed is 300mm / s, and the spraying thickness is 12μm. After the light gray topcoat is dry, a high-precision masking mold is used to mask the specific area, and then dark gray and white topcoats are sprayed separately. The spraying thickness of each color is 10μm. Through multiple color matching, a clear, accurate and beautiful color effect is achieved, so that the precision instrument casing meets the functional requirements and has a good visual effect. After the topcoat spraying is completed, the conveying device transports the casing to the curing area at a speed of 0.55m / s. The casing is kept stable during the transportation process to prevent the topcoat from flowing or defects, and stays in the curing area for 6 minutes.

[0053] In the curing step, a suitable curing method is selected according to the type of topcoat, including but not limited to thermal curing, ultraviolet curing, electron beam curing, etc. Curing conditions such as temperature, time, light intensity, radiation dose, etc. should be strictly controlled within a predetermined range, which is determined according to the curing characteristics of the topcoat and the coating performance requirements to ensure that the topcoat is fully cured and improve the hardness, wear resistance, corrosion resistance and weather resistance of the coating. After curing is completed, an automated intermittent conveying device transports the workpiece to the quality inspection area to prevent external factors from affecting the cured coating during the transportation process.

[0054] In this embodiment: the shell after spraying is placed in a heat curing oven and cured at 150°C for 40 minutes using a heat curing method to ensure that the topcoat is fully cured, thereby improving the hardness, wear resistance, corrosion resistance and weather resistance of the coating to meet the use requirements of precision instruments in various complex environments.

[0055] The quality inspection steps include testing of pattern clarity, color consistency, coating adhesion, hardness, wear resistance, corrosion resistance, weather resistance and other indicators. The inspection methods adopt industry standard inspection methods or verified equivalent inspection methods. Unqualified products can be effectively repaired or scrapped according to predetermined standards to ensure the quality stability and reliability of the final product. After the inspection is completed, qualified products are classified, collected and packaged through automated intermittent conveying devices to ensure that the product's appearance quality is not damaged during the transportation process.

[0056] In this implementation scheme: after curing is completed, the automated intermittent conveying device transports the shell to the quality inspection area at a speed of 0.4m / s to avoid the influence of external factors on the cured coating. The quality inspection includes the inspection of indicators such as pattern clarity, color consistency, coating adhesion, hardness, wear resistance, corrosion resistance, and weather resistance. A hardness tester is used to measure the hardness of the coating, and the adhesion is tested by the cross-cutting method. Professional chemical corrosion resistance testing equipment is used to simulate the instrument use environment for wear resistance and corrosion resistance tests. A colorimeter is used to detect color consistency, and a high-resolution microscope is used to check the clarity of the pattern. After testing, all product indicators meet the quality standard requirements for precision instrument shells, the pattern laser engraving is clear and accurate, the color is uniform and stable, and the coating has strong adhesion, which can meet the needs of long-term reliable use.

[0057] The process is suitable for workpieces made of various materials such as metal, plastic, ceramic, glass, etc. For workpieces of different materials, the process parameters can be optimized and adjusted according to the characteristics of the material to achieve the best pattern processing effect, and the patterns processed on workpieces of different materials can meet the corresponding product quality standards and usage requirements. During the processing of workpieces of different materials, the automated intermittent conveying device can be adaptively adjusted according to the size, shape and weight of the workpiece to ensure the smoothness and reliability of the conveying.

[0058] The process can be automated, semi-automated or manually operated in an industrial production environment. The operating procedures and equipment configuration can be flexibly adjusted according to the production scale and production efficiency requirements, while ensuring the stability of the process and the consistency of product quality. It can also be effectively integrated and compatible with existing production equipment and production lines. The automated intermittent conveying device serves as a connecting link in the entire production process, and its control system can achieve data exchange and collaborative work with the control systems of other equipment, thereby improving the intelligence level of the production process.

[0059] In this implementation scheme: after the test is completed, qualified products are transported to the finished product packaging area through the automatic unloading mechanism, and unqualified products are transported to the repair area. The automatic unloading mechanism automatically classifies and unloads materials according to the test results. The unloading speed is 0.3m / s, ensuring that qualified products and unqualified products enter the corresponding processing flow respectively, and the appearance quality of the products is not damaged during the entire unloading process. For qualified products, they are finely packaged in the packaging area, and anti-static and anti-collision packaging materials are used to ensure the safety and integrity of the products during transportation and storage. The control system of the automatic intermittent conveying device is deeply integrated with the control systems of other processing equipment, realizing real-time interaction and Working together, through the intelligent production management system, the entire production process can be monitored and analyzed in real time. According to the equipment operating status on the production line, workpiece processing progress, quality inspection results and other information, the operating parameters and production processes of each equipment can be automatically optimized and adjusted. For example, when a slight deviation is found in the laser engraving pattern, the system can automatically trace back the data of the relevant process, quickly adjust the parameters of the laser engraving equipment, and make timely corrections to subsequent workpieces. At the same time, it can also warn and prevent similar problems. This intelligent production model not only improves production efficiency and product quality, but also reduces production costs and labor costs, and promotes the upgrading and development of production enterprises towards intelligent manufacturing.

[0060] The above shows and describes the basic principle, main features and advantages of the present invention, and the standard parts used in the present invention can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0061] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pattern laser engraving spraying process, characterized in that: The following steps are involved: Loading: the workpieces to be processed are moved from the material storage area to the feed conveyor belt by an automated loading robot; Cleaning: clean the surface of the workpiece to remove impurities such as oil, dust, etc. Grinding treatment, followed by grinding treatment, to make the surface roughness reach a range suitable for subsequent processing; Laser engraving: using laser engraving equipment to carve the desired pattern outline on the surface of the workpiece; Depth adjustment: During the laser engraving process, the laser engraving processing depth can be accurately adjusted through the control system of the laser engraving equipment according to factors such as the workpiece material, pattern design requirements, and subsequent coating thickness; Primer spraying: spray primer on the surface of the workpiece after laser engraving; Topcoat spraying: spray topcoat according to pattern color requirements; Curing and quality inspection: Curing and quality inspection of the workpiece after spraying to ensure that the clarity of the pattern, color consistency and coating adhesion meet the requirements; Unloading: According to the quality inspection results, qualified products and unqualified products are classified and unloaded through the automatic unloading mechanism. Qualified products are collected and packaged, and unqualified products are returned for repair or scrapped according to the predetermined standards; During the entire process, workpieces are transported between various processing links using automated intermittent conveying devices.

2. The pattern laser engraving spraying process according to claim 1, characterized in that: In the cleaning step, an ultrasonic cleaning method is used. After the cleaning is completed, the workpiece is transported to the polishing station through an automated intermittent conveying device, and the conveying speed is reasonably adjusted according to the production rhythm and equipment layout.

3. The pattern laser engraving spraying process according to claim 1 is characterized in that: In the polishing process, sandpaper polishing is adopted. After polishing, the workpiece is transferred to the laser engraving station by an automatic intermittent conveying device, and the workpiece is kept in a stable state during the conveying process.

4. The pattern laser engraving spraying process according to claim 1, characterized in that: In the laser engraving pattern step, the laser parameters of the laser engraving equipment can be accurately and dynamically adjusted according to the workpiece material, pattern complexity and precision requirements, wherein the adjustment of the laser engraving processing depth is achieved by changing the energy density, pulse width or pulse number parameters of the laser pulse through the control system of the laser engraving equipment. After the laser engraving is completed, the workpiece is transported to the primer spraying area through an automated intermittent conveying device.

5. The pattern laser engraving spraying process according to claim 1, characterized in that: In the primer spraying step, the selection of the primer is based on good compatibility and adhesion with the workpiece material and subsequent coatings. The composition and performance indicators of the primer must meet specific industry standards. The primer spraying is performed by electrostatic spraying and air spraying. After the primer spraying is completed, the workpiece is moved to the topcoat spraying position using an automated intermittent conveying device.

6. The pattern laser engraving spraying process according to claim 1, characterized in that: In the topcoat spraying step, the color combination and spraying method of the topcoat can be achieved through regional spraying and multiple color spraying. The spraying method and parameters of the topcoat can be adjusted according to the type of topcoat and pattern design requirements. After the topcoat spraying is completed, the workpiece is sent to the curing area through an automated intermittent conveying device.

7. The pattern laser engraving spraying process according to claim 1, characterized in that: In the curing process, a suitable curing method is selected according to the type of topcoat, and the curing conditions are strictly controlled within a predetermined range. After the curing is completed, an automated intermittent conveying device transports the workpiece to a quality inspection area.

8. The pattern laser engraving spraying process according to claim 1, characterized in that: The quality inspection steps include inspections of pattern clarity, color consistency, coating adhesion, hardness, wear resistance, corrosion resistance, and weather resistance. The inspection method uses industry standard inspection methods, and unqualified products can be effectively repaired or scrapped according to predetermined standards. After the inspection is completed, qualified products are classified, collected, and packaged through automated intermittent conveying devices.

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