Paint spraying device for artware ornaments

Abstract

The invention relates to the technical field of spraying, in particular to a paint spraying device for handicraft ornaments.The paint spraying device for the handicraft ornaments.The paint spraying device comprises a rack, a paint spraying assembly is arranged on the rack, a fixing assembly and a collecting assembly are further arranged on the rack, the collecting assembly comprises a plurality of sets of spotlights, the spotlights are all used for emitting incident laser to the surface of the ornament, and the collecting assembly further comprises a plurality of photodiodes; the system further comprises a control system, and the control system is used for obtaining three-dimensional coordinates of reflection points according to the reflected light, building a decoration model according to the three-dimensional coordinates of all the reflection points, obtaining a paint spraying area input by a user, obtaining the position relation between all the points of the decoration and the paint spraying assembly and the paint spraying area according to the decoration model, and obtaining the paint spraying area. The control system is used for controlling the fixing assembly to change the fixing position of the ornament according to the ornament model, the speed and the covering area of paint sprayed by the paint spraying assembly are adjusted, the amount of the paint falling on the ornament surface unit area is equal, and the control system is further used for controlling the fixing assembly to change the ornament fixing position according to the ornament model.

Description

Technical Field

[0001] The invention relates to the technical field of spraying, and in particular to a paint spraying device for handicraft ornaments. Background Art

[0002] As a product that combines both artistry and practicality, handicrafts are widely used in home decoration, gift giving, cultural display and other fields. Their appearance quality directly affects consumers' purchasing decisions and market competitiveness, and spray painting, as a key process for surface treatment of handicrafts, plays a decisive role in the final effect. However, the existing spray painting technology has many problems in practical application, and it is difficult to meet the needs of handicrafts for high precision, high quality and high efficiency.

[0003] As consumers' demands for the appearance quality and personalization of handicrafts continue to increase, the importance of spray painting technology has become increasingly prominent. The spray painting of handicrafts not only needs to meet the basic requirements of decoration and protection, but also needs to find a balance between high precision, high quality and high efficiency. However, the existing spray painting technology is difficult to meet these requirements at the same time.

[0004] Mechanical spray painting, as a highly automated painting method, has significant advantages in large-scale production. However, for small crafts or crafts that require fine workmanship, the inherent defects of mechanical spray painting make it difficult to achieve the desired painting effect. Mechanical spray painting usually adopts fixed spraying paths and parameters, and its spraying accuracy is limited by the structure of the equipment and the performance of the control system. During the painting process, the spraying range and atomization effect of the mechanical spray gun often cannot meet the painting needs of complex shapes or tiny details, resulting in uneven paint film, blurred edges or lost details. For example, in carved craft ornaments, mechanical spray painting is difficult to accurately cover uneven surfaces, and it is easy to have problems such as missing sprays or paint film accumulation. This lack of refinement seriously limits the application of mechanical spray painting in high-precision painting occasions.

[0005] In order to make up for the shortcomings of mechanical spray painting in fine work, manual spray painting has become the choice of many handicraft manufacturers. Manual spray painting relies on the experience and skills of the operator, and can flexibly adjust the spraying method according to the shape and details of the handicraft, thereby improving the fineness of the spray painting to a certain extent. However, existing manual spray painting devices usually lack the function of precise control of the amount of paint sprayed, and the operator can only adjust the amount of paint sprayed based on experience, which may lead to the problem of too much or too little paint spraying. Too much paint spraying will result in a thick paint film, which not only wastes materials, but may also cover up the detailed features of the handicraft; while too little paint spraying will result in an uneven paint film, affecting the appearance quality and protective effect. In addition, it is difficult to maintain a consistent amount of paint sprayed by manual spray painting, especially in mass production, the spraying effects of different operators or different batches may vary significantly, further reducing the overall quality of the product.

[0006] Compared with mechanical spray painting, manual spray painting has lower production efficiency, which is particularly evident in large-scale production. Manual spray painting requires operators to spray paint the crafts one by one, which takes a long time, especially when dealing with crafts with complex shapes or requiring multiple layers of spray painting, the efficiency problem is more prominent. For example, for craft ornaments with complex textures or three-dimensional structures, manual spray painting requires repeated adjustment of the spray gun angle and distance to ensure uniform coverage of the paint film, which not only increases the difficulty of operation, but also significantly prolongs the production cycle. In addition, manual spray painting requires high skills for operators, and the training cost and time cost further limit the improvement of production efficiency. Against the background of growing market demand, the low efficiency of manual spray painting has become an important factor restricting the development of the handicraft manufacturing industry. Summary of the invention

[0007] In order to solve the above problems, the present invention provides a painting device for handicraft ornaments, which is used to improve the efficiency and uniformity of painting the handicraft ornaments.

[0008] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a painting device for handicraft ornaments, comprising a frame, a painting assembly is arranged on the frame, the painting assembly is used to paint the ornaments, a fixing assembly and a collection assembly are also arranged on the frame, the fixing assembly is used to adjust and limit the position of the ornaments, the collection assembly comprises a plurality of groups of spotlights, the spotlights are all used to emit incident lasers to the surface of the ornaments, and the incident laser angles are all different, the collection assembly also comprises a plurality of photodiodes, and the photodiodes are all arranged in a matrix, and the photodiodes are all used to collect the reflected lasers after the incident lasers pass through the surface of the ornaments;

[0009] It also includes a control system, which is used to obtain the three-dimensional coordinates of the reflection point based on the reflected light, and to build an ornament model based on the three-dimensional coordinates of all the reflection points, and to obtain the painting area input by the user, and to obtain the positional relationship between each point of the ornament and the painting component and the painting area based on the ornament model, and to adjust the paint speed and coverage area sprayed by the painting component so that the amount of paint falling on the unit area of ​​the ornament surface is equal. The control system is also used to control the fixing component to change the fixing position of the ornament according to the ornament model.

[0010] Furthermore, the fixing assembly includes several groups of pneumatic suction cup support cylinders, which are all fixedly connected to the frame, and the angles of the pneumatic suction cup support cylinders are all different. The control system controls the operation of the pneumatic suction cup support cylinders according to the pendulum model.

[0011] Furthermore, the fixing component also includes an electromagnetic array substrate, and the control system is also used to control the electromagnetic array substrate to generate a magnetic field, and judge whether the ornament is a magnetic material based on the change of the three-dimensional coordinates of the reflection point after the magnetic field is generated. When the ornament is not a magnetic material, the power supply of the electromagnetic array substrate is cut off. When the ornament is a magnetic material, it is judged whether the ornament needs to be adjusted according to the ornament model. When the ornament does not need to be adjusted, the size and direction of the magnetic field are kept unchanged during the painting process. When the ornament needs to be adjusted, the pneumatic suction cup support cylinder is controlled to reduce the force on the ornament, and the electromagnetic array substrate is controlled to change the size and direction of the magnetic field.

[0012] Furthermore, it also includes a communication module. The control system is also used to control the spotlight and the photodiode to work after the paint sprayed by the paint spraying component traverses the painting area of ​​the ornament, so that the spotlight again emits the incident laser to the surface of the ornament, and the photodiode again receives the reflected light of the incident laser after being reflected by the surface of the ornament, and then obtains the reflection point again, and constructs the ornament model, calculates the data difference at the same position on the ornament model in the two states of unpainted and painted, calculates the mean of the data difference at each position, calculates the number of reflection points whose difference between the data difference and the mean of the data difference is greater than a preset maximum value, and when the number is greater than the set value, the communication module outputs the position coordinates whose difference is greater than the preset maximum value to the user.

[0013] Furthermore, the paint spraying assembly includes a paint can and a compressed air source. The paint can is used to store paint. The paint can is connected to a number of spray guns. The spray guns are all hinged to the frame, and a group of cylinders are provided on the spray guns. The cylinders are all hinged to the frame, and the output ends of the cylinders are hinged to the adjacent side walls of the spray guns. The spray guns are connected to the compressed air source, and solenoid valves are provided at the connecting points between the compressed air source and the spray guns and at the connecting points between the paint can and the spray guns. The control system controls the operation of the cylinders, solenoid valves and spray guns according to the pendulum model.

[0014] Furthermore, a recovery component is provided on the frame, which includes a vacuum pump and a recovery box. The input end of the vacuum pump is connected to the frame, and the output end of the vacuum pump is connected to the recovery box. The vacuum pump is used to collect paint that does not adhere to the ornament after spraying. The controller controls the operation of the solenoid valve and the cylinder according to the working power of the vacuum pump.

[0015] Furthermore, the control system is also used to receive the properties of the paint input by the user, control the operation of the spray gun and the solenoid valve according to the properties of the paint, and adjust the painting time interval at different positions of the ornament.

[0016] Furthermore, the collection component also includes a temperature sensor and a humidity sensor. The temperature sensor is used to collect temperature information on the surface of the ornament, and the humidity sensor is used to collect humidity information on the surface of the ornament. The control system corrects the properties of the paint input by the user based on the temperature information and the humidity information.

[0017] Furthermore, the control system is also used to predict the trajectory of paint flow and the range of paint solidification based on temperature information, humidity information, the properties of the paint and the amount of paint sprayed on the ornament, and calculate the thickness of the paint at various parts of the ornament when all the paint is solidified based on the ornament model, paint flow trajectory and paint solidification range collected before spraying is completed, and calculate the flatness of the surface of the ornament at this time. When the flatness is less than the set range, the control system controls the communication module to output a qualified prompt to the user. When the flatness exceeds the set range, the control system controls the communication module to output the coordinates of the position where the thickness exceeds the set range to the user.

[0018] Furthermore, the control system is also used to control the operation of the pneumatic suction cup support cylinder to reduce the pressure of the pneumatic suction cup support cylinder on the ornament, and control the electromagnetic matrix substrate to generate a magnetic field to adjust the position of the ornament when the ornament is made of magnetic material and it is predicted that the surface flatness of the ornament will exceed a set range after the paint solidifies.

[0019] The technical principle of the above scheme and the following beneficial effects:

[0020] This solution scans and locates the surface of the ornament through the design of acquisition components, spotlights and matrix-arranged photodiodes, thereby generating a corresponding ornament model. In the subsequent painting process, the painting speed and coverage area are adjusted according to the ornament model and the positional relationship between each position of the ornament and the spray gun, so that the amount of paint falling on the unit area of ​​the ornament surface is the same, thereby achieving uniform painting of the ornament.

[0021] This solution obtains the ornament model and calculates the amount of paint required for each position of the ornament based on the ornament model. It can avoid the disadvantage that manual painting relies on the operator's painting technology to achieve paint uniformity. At the same time, compared with the mechanical painting in the prior art, this solution can achieve higher-precision painting by adjusting the paint area when facing crafts with rugged surfaces, thereby improving the uniformity of the ornament surface.

[0022] At the same time, since the present solution controls the operation of the paint spraying component by the required amount of paint sprayed per unit area, the present solution can achieve high-precision painting without the need for spray guns at too many angles to perform the corresponding painting work. Compared with the prior art, the present solution can use fewer spray guns to achieve the painting work, thereby reducing the production cost of the present solution, which is conducive to the subsequent promotion and application of the present solution.

[0023] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is an axonometric view of an embodiment of a paint spraying device for a handicraft ornament of the present invention;

[0025] Figure 2 A top view of an embodiment of a paint spraying device for a handicraft ornament of the present invention;

[0026] Figure 3 It is a front view of an embodiment of a paint spraying device for a handicraft ornament of the present invention;

[0027] Figure 4 for Figure 3 Cross-section view in the AA direction;

[0028] Figure 5 A schematic diagram of the system framework of an embodiment of a paint spraying device for handicraft ornaments of the present invention.

[0029] The figure marks in the drawings of the specification include: 1, frame; 2, spray gun; 21, cylinder; 3, pneumatic suction cup support cylinder; 4, electromagnetic matrix substrate. DETAILED DESCRIPTION

[0030] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. 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] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The following is further described in detail through specific implementation methods:

[0034] Embodiment 1:

[0035] As attached Figure 1 -Attached Figure 5 As shown: a painting device for handicraft ornaments, including a frame 1, on which a paint spraying assembly is provided, the paint spraying assembly is used to paint the ornaments, the paint spraying assembly includes a paint tank and a compressed air source (not shown in the figure), in this embodiment, the compressed air source is an air compressor, the paint tank is used to store paint, the paint tank is connected to a plurality of spray guns 2, the spray guns 2 are all hinged to the frame 1, and a group of cylinders 21 are provided on the spray guns 2, the number of each group of cylinders 21 is two, the cylinders 21 are all hinged to the frame 1, and the output ends of the cylinders 21 are all hinged to the adjacent side walls of the spray guns 2, the spray guns 2 are all connected to the compressed air source, and the connection between the compressed air source and the spray gun 2 and the connection between the paint tank and the spray gun 2 are provided with solenoid valves.

[0036] The frame 1 is also provided with a fixing component and a collecting component. The fixing component is used to adjust and limit the position of the ornament. The fixing component includes several groups of pneumatic suction cup support cylinders 3. The number of pneumatic suction cup support cylinders 3 is greater than three. The pneumatic suction cup support cylinders 3 are all fixedly connected to the frame 1, and the angles of the pneumatic suction cup support cylinders 3 are all different.

[0037] The collection component includes a plurality of groups of spotlights (not shown in the figure), which are used to emit incident lasers to the surface of the ornament, and the incident lasers have different angles. The collection component also includes a plurality of photodiodes (not shown in the figure), which are installed on the outer wall of the frame and arranged in a matrix. The photodiodes are used to collect the reflected lasers after the incident lasers pass through the surface of the ornament.

[0038] It also includes a control system, which includes a controller. The controller is fixedly connected to the frame 1 by bolts, and the cylinder 21, the pneumatic suction cup support cylinder 3, the spray gun 2 and the photodiode are all electrically connected to the controller. The controller is used to obtain the three-dimensional coordinates of the reflection point according to the reflected light, and to build an ornament model according to the three-dimensional coordinates of all the reflection points, and to obtain the painting area input by the user, and to obtain the positional relationship between each point of the ornament and the paint spraying component and the paint spraying area according to the ornament model, and to control the operation of the cylinder 21 and the spray gun 2; at the same time, the speed and coverage area of ​​the paint sprayed by the spray gun 2 are adjusted by controlling the connection of the solenoid valve, so that the amount of paint sprayed on the unit area of ​​the ornament surface is equal. The controller is also used to control the operation of the pneumatic suction cup support cylinder 3 according to the ornament model, change the supporting force given to the ornament by the pneumatic suction cup support cylinder 3, and then change the fixed position of the ornament by the pneumatic suction cup support cylinder 3.

[0039] The specific implementation process is as follows: when using the device, the length of the pneumatic suction cup support cylinder 3 is adjusted according to the general shape of the handicraft ornament, and then the ornament is placed at the output end of the pneumatic suction cup support cylinder 3, and then the suction cup of the pneumatic suction cup support cylinder 3 is adjusted in sequence according to the shape of the handicraft to contact the ornament, and then the length of the pneumatic suction cup support cylinder 3 is adjusted according to the material of the ornament. For example, when the material of the ornament is easy to deform or break after being stressed, the length of the pneumatic suction cup support cylinder 3 is slightly adjusted so that the pneumatic suction cup support cylinder 3 below the ornament is The suction cup support cylinder 3 provides support force for the ornament, while the pneumatic suction cup support cylinder 3 in other directions changes its length, discharges the air between its suction cup and the surface of the ornament, and restricts the movement trend of the ornament to avoid displacement of the ornament during the painting process, so as to fix the position of the ornament. If the material of the ornament is not easy to deform or break after being subjected to force, the length of the pneumatic suction cup support cylinder 3 can be appropriately extended so that the pneumatic suction cup support cylinder 3 causes a certain amount of extrusion on the ornament to fix the ornament and avoid displacement in the subsequent painting process.

[0040] Then the controller controls the spotlight to work, and the spotlight projects an incident laser onto the surface of the ornament. The incident laser is reflected by the surface of the ornament to form a reflected laser, which is received by the photodiode at the corresponding position. The photodiode light model at the corresponding position is converted into an electrical signal. The controller can obtain the three-dimensional coordinates of the reflection point based on the time-of-flight principle, the angle and frequency of the incident laser and the reflected laser, and the position of the emission point of the incident laser (since the spotlight is fixedly connected to the frame 1, the angle of the incident laser generated by each spotlight and the three-dimensional coordinates of the point where the laser is emitted are known constants), turn on the spotlights in turn, and obtain the three-dimensional coordinates of the corresponding reflection points. These three-dimensional coordinates are connected into a smooth curved surface to obtain the ornament model.

[0041] The operator then inputs the information of the positions that need to be painted into the controller according to the process requirements of the ornaments, and speeds up the painting area.

[0042] According to the distance between each position of the ornament model and the nozzle of the nearest spray gun 2, the required amount of paint and the speed of spraying are determined when the spray gun 2 at that position sprays the ornament at the corresponding position, so that the paint thickness at each position of the spraying is consistent. For example, the distances between positions A and B and the nozzle of the nearest spray gun 2 are a and b respectively, and a is much smaller than b. At this time, when the controller controls the spray gun 2 at the corresponding position and the corresponding solenoid valve to open, compressed air enters the corresponding spray gun 2, and the compressed air moves rapidly inside the spray gun 2, causing the air pressure at the connection position between the spray gun 2 and the paint tank to drop. Under the action of the air pressure, the paint inside the paint tank moves toward the spray gun 2, and after entering the spray gun 2, it is sprayed on the surface of the ornament together with the compressed air. At this time, the controller changes the opening of the solenoid valve at the connection position between the spray gun 2 and the compressed air source according to the distance between the nozzle of the spray gun 2 and the position facing the ornament. , and then adjust the amount of compressed air entering the spray gun 2, and then adjust the speed and spraying amount of the paint sprayed from the spray gun 2 later (for example, when the controller turns on the solenoid valve and sprays the two positions A and B through the spray gun 2, the opening of the solenoid valve corresponding to the position A is much smaller than the opening of the solenoid valve corresponding to the position B). At the same time, the controller adjusts the spraying area of ​​the spray gun 2 according to the shape of the ornament, thereby adjusting the distribution amount of the paint on the unit area of ​​the ornament surface, so that when the spraying is completed, the distribution amount of the paint on the unit area at each position of the ornament is roughly the same, thereby improving the uniformity of the paint spraying and improving the texture of the final product.

[0043] When the paint spraying position traverses all the paint spraying areas, the paint spraying is completed and the controller controls all the solenoid valves to close.

[0044] During the spraying process, the controller adjusts the angle of the spray gun 2 by controlling the cylinder 21 to work in coordination, so as to adjust the angle of the paint sprayed from the spray gun 2, and then adjust the contact position between the paint and the surface of the ornament, so that the paint sprayed from the spray gun 2 can cover all positions that need to be painted. At the same time, the controller can judge the extension and contraction amount of the cylinder 21 according to the size and working power of the cylinder 21, and then obtain the position of the nozzle of the spray gun 2 after the angle adjustment, and adjust the opening of the corresponding solenoid valve according to the current state of the spray gun 2.

[0045] At the same time, during the spraying process, due to the redundant design of the pneumatic suction cup support cylinder 3, during the painting process, if the painting position is blocked by the pneumatic suction cup support cylinder 3, the controller can control the pneumatic suction cup support cylinder 3 at this position to contract, thereby making the pneumatic suction cup support cylinder 3 at this position separate from the ornament. At this time, the controller can control the cylinder 21, the spray gun 2 and the solenoid valve to work and spray paint on this position.

[0046] Embodiment 2:

[0047] As attached Figure 1As shown, the difference from Example 1 is that the fixing component also includes an electromagnetic array substrate, the electromagnetic array substrate is fixedly connected to the frame 1 by bolts, and the electromagnetic valve array substrate is arranged below all the pneumatic suction cup support cylinders 3, and the electromagnetic array substrate is electrically connected to the controller, and the controller is also used to control the electromagnetic array substrate to generate a magnetic field, and judge whether the ornament is a magnetic material according to the change of the three-dimensional coordinates of the reflection point after the magnetic field is generated. When the ornament is not a magnetic material, the power supply of the electromagnetic array substrate is cut off. When the ornament is a magnetic material, it is judged whether the ornament needs to be adjusted according to the ornament model. When the ornament does not need to be adjusted, the size and direction of the magnetic field are kept unchanged during the painting process. When the ornament needs to be adjusted, the pneumatic suction cup support cylinder 3 is controlled to reduce the force on the ornament, and the electromagnetic array substrate is controlled to change the size and direction of the magnetic field.

[0048] The specific implementation process is as follows: when using the device, after the user uses the pneumatic suction cup support cylinder 3 to fix the ornament, when the device is started to emit an incident laser to the ornament, the controller first controls the electromagnetic array substrate to work, and the electromagnetic array substrate generates a magnetic field. At the same time, the controller controls the pneumatic suction cup support cylinder 3 to work, so that the pneumatic suction cup support cylinder 3 is slightly away from the ornament but not separated from the ornament, thereby reducing the squeezing force applied by the pneumatic suction cup support cylinder 3 on the ornament. If the ornament is not made of magnetic material, although a magnetic field is generated around the ornament at this time, it is difficult for the magnetic field to act on the ornament, and it is difficult for the ornament to undergo a certain displacement under the action of the magnetic field. That is, at this time, the controller collects data based on the photodiode. The three-dimensional coordinates of the reflection point on the ornament obtained by the optical signal do not change, or only change slightly under the action of gravity. In the subsequent painting process, the electromagnetic array substrate cannot have any effect on the ornament. When the device is located around metal processing equipment, the electromagnetic array substrate may also attract metal debris in the air during operation, and adsorb the metal debris to the vicinity of the ornament, thereby affecting the subsequent painting quality. At this time, the controller cuts off the power supply of the electromagnetic array substrate; if the ornament is made of magnetic material, after the electromagnetic array basically generates a magnetic field, the magnetic force of the magnetic field drives the ornament to move, that is, the three-dimensional coordinates of the reflection point obtained by the controller changes accordingly.

[0049] In summary, the controller can determine whether the ornament is made of magnetic material by checking whether the three-dimensional coordinates of the reflection point change after the electromagnetic array substrate generates a magnetic field, and control the opening and closing of the electromagnetic array substrate according to whether the ornament is made of magnetic material, and after the judgment is completed, control the pneumatic suction cup support cylinder 3 to work again to fix the ornament.

[0050] When the ornament is made of magnetic material, the controller determines whether the ornament is in the best painting position at this time based on the ornament model. For example, when there is a recessed position in the painting range of the ornament, and there is a large angle between the recessed displacement and the nozzle of the spray gun 2, it is difficult for the controller to adjust the angle of the spray gun 2 through the cylinder 21 to achieve complete painting during the subsequent painting process. At this time, the controller controls the pneumatic suction cup support cylinder 3 to reduce the pressure applied to the ornament again, and then controls the electromagnetic array substrate to work, by generating a magnetic field of corresponding size and direction, and fine-tuning the position of the ornament through magnetic force, thereby reducing the angle between the recessed position on the surface of the ornament and the nearest spray gun 2, reducing the blind angle when the spray gun 2 is painting, improving the quality of painting, and also reducing the probability of rework due to unqualified painting.

[0051] Embodiment 3:

[0052] As attached Figure 1 As shown, the difference from Example 2 is that it also includes a communication module, which is electrically connected to the controller. The controller is also used to control the spotlight and the photodiode to work after the paint sprayed by the paint spraying component traverses the painting area of ​​the ornament, and the spotlight again emits the incident laser to the surface of the ornament, and the photodiode again receives the reflected light after the incident laser is reflected by the surface of the ornament, and then obtains the reflection point again, and constructs the ornament model, calculates the data difference at the same position on the ornament model in the two states of unpainted and painted, calculates the mean of the data difference at each position, calculates the number of reflection points whose difference between the data difference and the mean of the data difference is greater than the preset maximum value, and when the number is greater than the set value, the communication module outputs the position coordinates whose difference is greater than the preset maximum value to the user.

[0053] The specific implementation process is as follows: In the process of using this device, after the painting is completed (that is, the paint sprayed by the spray gun 2 traverses the entire painting area of ​​the ornament), the controller starts the spotlight and the photodiode to work again, and the spotlight again emits incident laser to the surface of the ornament. The incident laser enters the photodiode after being emitted through the surface of the ornament. The photodiode converts the optical signal into an electrical signal again, and the controller obtains the three-dimensional coordinates of the emission point according to the electrical signal again, and constructs the corresponding ornament model again according to the three-dimensional coordinates of the emission point. Since the relative position of the ornament and the frame 1 does not change significantly before and after painting, the controller can calculate the thickness change of each part of the ornament before and after painting according to the changes in the ornament model, that is, the difference of the data at each position, and then calculate the mean of the data difference at each position, and then calculate the difference between the data difference at each position and the above mean in turn, and when it is greater than the preset maximum value, the communication module is controlled to output the coordinates whose difference is greater than the preset maximum value to the user for the operator's reference.

[0054] Compared with the existing technology, this solution can collect the coordinates of each position on the surface of the ornament for the second time after the painting is completed, and calculate the thickness of the paint based on the data collected twice. According to the difference between the thickness of each position and the average thickness, the integrity and uniformity of the paint can be judged. In the case of obvious unevenness in the paint, the coordinates of the corresponding position are output through the communication module to help the operator determine whether the position needs to be adjusted and repaired. Compared with the existing technology, this solution can help the operator check the paint effect, reduce the error caused by visual quality inspection, reduce the operator's work steps, and promote the development of intelligent painting technology.

[0055] Embodiment 4:

[0056] As attached Figure 1 As shown, the difference from Example 3 is that a recovery component is also provided on the frame 1, and the recovery component includes a vacuum pump and a recovery box (not shown in the figure), and the vacuum pump and the recovery box are fixedly connected to the frame 1 by bolts, and the input end of the vacuum pump is connected to the frame 1, and the output end of the vacuum pump is connected to the recovery box. The vacuum pump is used to collect paint that is not adhered to the ornament after being sprayed, and the vacuum pump is electrically connected to the controller. The controller controls the operation of the solenoid valve and the cylinder 21 according to the working power of the vacuum pump.

[0057] The specific implementation process is as follows: when starting the device, the operator can simultaneously start the vacuum pump, which generates negative pressure to collect the paint around the ornament to prevent paint particles around the ornament from floating in the air, causing environmental pollution and endangering the operator's health. At the same time, to avoid the operation of the vacuum pump, the airflow around the ornament is disturbed, thereby changing the trajectory of the paint sprayed from the spray gun 2, thereby affecting the subsequent painting effect. At this time, the controller determines how to adjust the initial velocity of the paint leaving the spray gun 2 according to the working power of the vacuum pump to offset the effect of the vacuum pump on the width of the paint, and controls the solenoid valve and the cylinder 21 according to the judgment result, and adjusts the speed or angle of the paint spraying to offset the effect of the negative pressure generated by the vacuum pump on the paint.

[0058] Compared with the existing technology, this solution can greatly reduce the paint particles suspended in the air during the painting process, thereby reducing the probability of respiratory diseases caused by the operator inhaling paint particles during operation, while reducing the irritation of the paint to the operator's skin and eyes, reducing the probability of occupational diseases, and improving the safety of the device. At the same time, since the concentration of paint particles in the air is reduced, it is also beneficial to reduce the risk of paint explosion in a closed space.

[0059] Embodiment 5:

[0060] As attached Figure 1As shown, the difference from Example 4 is that the controller is also used to receive the properties of the paint input by the user, such as fluidity, viscosity, adhesion, drying time, anti-sagging and other properties that are likely to affect the painting effect, and the spray gun 2 and the solenoid valve are controlled to work according to the properties of the paint, and the painting time intervals of different positions of the ornaments are adjusted.

[0061] The collection component also includes a temperature sensor and a humidity sensor. The temperature sensor is used to collect temperature information on the surface of the ornament, and the humidity sensor is used to collect humidity information on the surface of the ornament. Both the temperature sensor and the humidity sensor are fixedly connected to the frame 1 by bolts, and both the temperature sensor and the humidity sensor are electrically connected to the controller. The controller corrects the properties of the paint input by the user according to the temperature information and the humidity information.

[0062] The controller is also used to predict the paint flow trajectory and paint solidification range based on temperature information, humidity information, paint properties and the amount of paint sprayed on the ornament, and calculate the thickness of the paint at various parts of the ornament when all the paint is solidified based on the ornament model, paint flow trajectory and paint solidification range collected before spraying is completed, and calculate the flatness of the ornament surface at this time. When the flatness is less than the set range, the control system controls the communication module to output a qualified prompt to the user. When the flatness exceeds the set range, the controller controls the communication module to output the coordinates of the position where the thickness exceeds the set range to the user.

[0063] The controller is also used to control the pneumatic suction cup support cylinder 3 to work when the ornament is made of magnetic material and it is predicted that the surface flatness of the ornament exceeds a set range after the paint solidifies, thereby reducing the pressure of the pneumatic suction cup support cylinder 3 on the ornament, and controlling the electromagnetic matrix substrate 4 to generate a magnetic field to adjust the position of the ornament.

[0064] The specific implementation process is as follows: before using the device, the operator inputs the paint into the paint tank and then inputs the properties of the paint into the controller. The controller can calculate the drying time of the paint sprayed on the surface of the ornament based on the paint information and the amount of paint subsequently sprayed on the surface of the ornament. When faced with the need for overlapping spraying or multi-layer spraying, the controller can control the spray gun 2 and the solenoid valve according to the time it takes for the paint to solidify on the surface of the ornament, and then adjust the spraying time interval of different positions of the ornament to avoid sagging, orange peel or solvent retention during the spraying process, thereby improving the quality of spraying.

[0065] Before painting, the temperature sensor and humidity sensor continuously collect temperature and humidity information on the surface of the ornament. The drying time of most paints on the market is significantly affected by temperature and humidity. The drying time may be shortened in a high temperature and low humidity environment, while in a low temperature or high humidity environment, the drying time will be extended. Therefore, after obtaining the temperature and humidity information of the surface of the ornament, the controller combines the properties of the paint and makes appropriate corrections to the properties of the paint that affect its drying time, such as fluidity, viscosity, adhesion, drying time, and anti-sagging, in order to adapt to the current construction environment and improve the accuracy of the controller's judgment of the paint solidification time during the subsequent painting process.

[0066] Subsequently, the controller predicts the change in the thickness of the paint on the surface of the ornament caused by the flow of the paint during the spraying process, that is, the thickness of the paint at various locations on the ornament, based on the ornament model obtained before spraying the paint, in combination with the paint flow trajectory and the paint solidification range, according to the properties of the corrected paint, the amount of paint sprayed on the surface of the ornament by the spray gun 2, and the collected temperature information and humidity information, and the flow trajectory of the paint and the range of the final solidification. The controller calculates the flatness of the surface of the ornament at this time based on the predicted data (the absolute value of the ideal paint thickness is designed according to the properties of the paint, and then the absolute difference between the ideal paint thickness and each location on the surface of the ornament is calculated). The difference of the values, and then the average of all the differences are calculated to obtain the flatness). If the flatness of the surface of the ornament is less than the set range, when the paint and spraying scheme are used for spraying, the flow of the paint has little effect on the quality of the paint on the surface of the finished product. At this time, the controller controls the communication module to output a qualified prompt to the user, and the operator can start the solenoid valve and other subsequent painting operations. If the flatness of the surface of the ornament exceeds the set range, the controller controls the communication module to output the coordinates of the position that may exceed the set range to the user, helping the operator to adjust the speed and other data of the subsequent painting, and helping the operator to accurately repair the paint surface after the painting is completed. Compared with the prior art, this solution fully considers the characteristics of some paints with strong fluidity, helps the operator to judge the negative impact and degree of the fluidity of the paint on the quality of the paint spraying of the finished surface of the ornament, reduces the human participation in the painting process, helps to reduce the requirements for the professional quality of the operator during the painting process, and can further improve the quality of the final product.

[0067] When facing magnetic materials, if the controller predicts that the flatness of the surface of the ornament exceeds the set range after the paint solidifies, the controller controls the pneumatic suction cup support cylinder 3 to work to reduce the pressure applied to the surface of the ornament by starting the suction cup support cylinder, and controls the electromagnetic matrix substrate 4 to work at the same time. By adjusting the size and direction of the magnetic field generated by the electromagnetic matrix substrate 4, the ornament is pushed to move to a certain extent, thereby changing the direction or speed of the paint flow, and adjusting the paint flow range, reducing the paint flow range due to too large a paint flow range, resulting in less paint in some positions and overlapping paint in some positions, affecting the quality of subsequent ornaments. Compared with the prior art, the design of the electromagnetic matrix substrate 4 is used in this solution to adjust the ornaments of some magnetic materials, further reducing the operator's operating steps and promoting the intelligent development of the painting process.

[0068] Embodiment 6:

[0069] As attached Figure 1 As shown, the difference from Example 5 is that the operator can adjust the shape of the rack according to the actual shape of the ornament. For example, when facing the "Painting and Decoration" project in the World Skills Competition, the shape and size of the rack can be adjusted according to the task body, so that most of the incident light projected by the spotlight and the paint sprayed by the paint spray component can be concentrated on the task body.

[0070] In the "Paint and Installation" project, contestants are required to complete a series of tasks related to paint and decoration within a limited time, including surface treatment, paint application, decorative effect production, etc. Contestants need to have precise operating ability, color matching skills and a deep understanding of materials.

[0071] During the use of this device, the operator sets a reasonable painting area and painting sequence in the controller according to the task requirements. Then the controller can independently perform the corresponding painting operations, and after the painting is completed, it can independently check the uniformity of the paint. During the operation of this scheme, it is not easy to have uneven painting or obvious defects due to the decreased sensitivity of the naked eye to the paint surface. This scheme has low technical requirements for operators, and the painting accuracy and efficiency are far beyond the level of conventional construction personnel. When facing manual painting technology, this scheme has obvious advantages.

[0072] Obviously, the above embodiments are merely examples for the purpose of clear explanation, and are not intended to limit the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the implementation methods here. The obvious changes or modifications derived therefrom are still within the scope of protection of the invention.

Claims

1. A painting device for handicraft ornaments, comprising a frame (1), on which a painting assembly is arranged, the painting assembly is used to paint the ornaments, and is characterized in that: The frame (1) is also provided with a fixing component and a collecting component. The fixing component is used to adjust and limit the position of the ornament. The collecting component includes a plurality of groups of spotlights. The spotlights are used to emit incident laser light to the surface of the ornament. The incident laser light has different angles. The collecting component also includes a plurality of photodiodes. The photodiodes are arranged in a matrix. The photodiodes are used to collect reflected laser light after the incident laser light passes through the surface of the ornament. It also includes a control system, which is used to obtain the three-dimensional coordinates of the reflection point based on the reflected light, and to build an ornament model based on the three-dimensional coordinates of all the reflection points, and to obtain the painting area input by the user, and to obtain the positional relationship between each point of the ornament and the painting component and the painting area based on the ornament model, and to adjust the paint speed and coverage area sprayed by the painting component so that the amount of paint falling on the unit area of ​​the ornament surface is equal. The control system is also used to control the fixing component to change the fixing position of the ornament according to the ornament model.

2. The painting device for handicraft ornaments according to claim 1, characterized in that: The fixing assembly comprises a plurality of groups of pneumatic suction cup support cylinders (3), the pneumatic suction cup support cylinders (3) are all fixedly connected to the frame (1), and the angles of the pneumatic suction cup support cylinders (3) are all different. The control system controls the operation of the pneumatic suction cup support cylinders (3) according to the pendulum model.

3. The painting device for handicraft ornaments according to claim 2, characterized in that: The fixing component also includes an electromagnetic array substrate. The control system is also used to control the electromagnetic array substrate to generate a magnetic field, and judge whether the ornament is made of magnetic material according to the change of the three-dimensional coordinates of the reflection point after the magnetic field is generated. If the ornament is not made of magnetic material, the power supply of the electromagnetic array substrate is cut off. If the ornament is made of magnetic material, it is judged whether the ornament needs to be adjusted according to the ornament model. If the ornament does not need to be adjusted, the size and direction of the magnetic field are kept unchanged during the painting process. If the ornament needs to be adjusted, the pneumatic suction cup support cylinder (3) is controlled to reduce the force on the ornament, and the electromagnetic array substrate is controlled to change the size and direction of the magnetic field.

4. The painting device for handicraft ornaments according to claim 3 is characterized in that: It also includes a communication module. The control system is also used to control the spotlight and the photodiode to work after the paint sprayed by the paint spraying component traverses the painting area of ​​the ornament, so that the spotlight again emits the incident laser to the surface of the ornament, and the photodiode again receives the reflected light after the incident laser is reflected by the surface of the ornament, and then obtains the reflection point again, and constructs the ornament model, calculates the data difference at the same position on the ornament model in the two states of unpainted and painted, calculates the mean of the data difference at each position, calculates the number of reflection points whose difference between the data difference and the mean of the data difference is greater than the preset maximum value, and when the number is greater than the set value, the communication module outputs the position coordinates whose difference is greater than the preset maximum value to the user.

5. The painting device for handicraft ornaments according to claim 4, characterized in that: The paint spraying assembly comprises a paint tank and a compressed air source. The paint tank is used to store paint. The paint tank is connected to a plurality of spray guns (2). The spray guns (2) are all hinged to a frame (1). A group of cylinders (21) are provided on the spray guns (2). The cylinders (21) are all hinged to the frame (1). The output ends of the cylinders (21) are all hinged to the side walls of adjacent spray guns (2). The spray guns (2) are all connected to the compressed air source. Solenoid valves are provided at the connection points between the compressed air source and the spray guns (2) and at the connection points between the paint tank and the spray guns (2). The control system controls the operation of the cylinders (21), the solenoid valves and the spray guns (2) according to the pendulum model.

6. The painting device for handicraft ornaments according to claim 5, characterized in that: The frame (1) is also provided with a recovery component, which includes a vacuum pump and a recovery box. The input end of the vacuum pump is connected to the frame (1), and the output end of the vacuum pump is connected to the recovery box. The vacuum pump is used to collect paint that is not adhered to the ornament after being sprayed. The controller controls the operation of the solenoid valve and the cylinder (21) according to the working power of the vacuum pump.

7. The paint spraying device for handicraft ornaments according to claim 6, characterized in that: The control system is also used to receive the properties of the paint input by the user, control the operation of the spray gun (2) and the electromagnetic valve according to the properties of the paint, and adjust the time interval of spraying paint at different positions of the ornament.

8. The paint spraying device for handicraft ornaments according to claim 7, characterized in that: The collection component also includes a temperature sensor and a humidity sensor. The temperature sensor is used to collect temperature information on the surface of the ornament, and the humidity sensor is used to collect humidity information on the surface of the ornament. The control system corrects the properties of the paint input by the user based on the temperature information and the humidity information.

9. The painting device for handicraft ornaments according to claim 8, characterized in that: The control system is also used to predict the paint flow trajectory and paint solidification range based on temperature information, humidity information, paint properties and the amount of paint sprayed on the ornament, and calculate the thickness of the paint at various parts of the ornament when all the paint is solidified based on the ornament model, paint flow trajectory and paint solidification range collected before spraying is completed, and calculate the flatness of the ornament surface at this time. When the flatness is less than the set range, the control system controls the communication module to output a qualified prompt to the user. When the flatness exceeds the set range, the control system controls the communication module to output the coordinates of the position where the thickness exceeds the set range to the user.

10. The painting device for handicraft ornaments according to claim 9, characterized in that: The control system is also used to control the pneumatic suction cup support cylinder (3) to work when the ornament is made of magnetic material and it is predicted that the surface flatness of the ornament exceeds a set range after the paint solidifies, thereby reducing the pressure of the pneumatic suction cup support cylinder (3) on the ornament, and controlling the electromagnetic matrix substrate (4) to generate a magnetic field to adjust the position of the ornament.

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