Molding powder spraying device capable of avoiding empty spraying

Abstract

The utility model discloses a molding powder spraying device capable of avoiding empty spraying, which comprises a fixed cover and a powder bin, a venturi powder pump is fixedly arranged between the right side of the powder bin and the left side of the outer surface of the fixed cover through a pipeline, and an air supply valve is fixedly arranged between the back side of the venturi powder pump and the left side of the outer surface of the fixed cover. Through the arrangement of the hanging frame and the scale marks, the square metal cover plate needing to be machined can be hung in the molding powder spraying process, and meanwhile personnel can conveniently observe the horizontal distance between the two sides of the square metal cover plate and the infrared distance measuring sensors; and through the arrangement of a PLC, a servo motor, a reciprocating lead screw, a sliding block, a movable frame, a spray gun, an infrared distance measuring sensor, an air supply valve, an electromagnetic valve, a Venturi powder pump and a powder bin, the position of the spray gun can be adjusted in a reciprocating motion mode in the molding powder spraying process, so that the spray gun can evenly spray molding powder.

Description

Technical Field

[0001] This utility model relates to the field of powder coating technology, specifically to a powder coating device that avoids dry spraying. Background Technology

[0002] Powder coating is a surface treatment technology that involves spraying plastic powder onto the surface of an object and then melting and curing it under heating conditions to form a strong and durable coating. Powder coating equipment is widely used in various industries, including automobiles, home furnishings, and industrial products. Through powder coating, objects can be provided with properties such as corrosion resistance, wear resistance, and high temperature resistance, while achieving a variety of colorful appearance effects.

[0003] However, existing powder coating equipment often experiences dry spraying when applying powder coating to objects. Dry spraying refers to the phenomenon where the spray gun continues to spray powder even when it is not aimed at the object to be coated. This results in the powder not effectively adhering to the surface of the object, causing a large amount of powder waste and increasing production costs. At the same time, the powder that does not adhere to the surface of the object needs to be recycled by subsequent equipment, and the large amount of excess powder generated by dry spraying greatly increases the workload of the recycling equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a powder coating device that avoids dry spraying, which has the advantages of effectively avoiding a large amount of powder waste caused by dry spraying during powder coating operations and is easy for personnel to use.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a powder coating device to avoid dry spraying, comprising a fixed cover and a powder hopper. A Venturi powder pump is fixedly installed between the right side of the powder hopper and the left side of the outer surface of the fixed cover via a pipe. An air supply valve is fixedly installed between the back of the Venturi powder pump and the left side of the outer surface of the fixed cover. A PLC controller is fixedly installed on the right side of the outer surface of the fixed cover. A fixed plate is fixedly connected to the top left end of the outer surface of the fixed cover. An infrared ranging sensor is fixedly installed at the lower right end of the fixed plate. A servo motor is fixedly installed on the left side of the fixed plate. A reciprocating lead screw is fixedly installed at the output end of the servo motor. A slider is threadedly connected to the left end of the reciprocating lead screw. A movable frame is fixedly installed at the middle end of the slider. A spray gun is fixedly installed at the lower end of the movable frame. A solenoid valve is fixedly installed between the upper end of the Venturi powder pump and the front surface of the spray gun via a pipe. A hanger is fixedly connected to the top of the inner cavity of the fixed cover. The front surface of the hanger is coated with scale lines.

[0006] As a preferred embodiment, both ends of the top of the fixed cover are provided with receiving holes, and the upper end of the movable frame is fixedly connected with a protective baffle, the surface of which is slidably connected to the surface of the receiving hole.

[0007] As a preferred embodiment, a support plate is fixedly connected to the right end of the top of the outer surface of the fixed cover, and the right side of the reciprocating screw is movably connected to the left side of the support plate through a bearing.

[0008] As a preferred embodiment, a support platform is fixedly connected to the bottom of the fixed cover, a recycling hopper is fixedly connected to the middle of the support platform, and a recycling pipe is fixedly connected to the bottom of the recycling hopper.

[0009] As a preferred embodiment, the bottom of the support platform is fixedly connected to support columns on all four sides, and the bottom of the support columns is fixedly connected to a load-bearing base plate.

[0010] As a preferred embodiment, the number of solenoid valves and the number of spray guns are both five, and the distance between any two adjacent spray guns is equal.

[0011] As a preferred embodiment, both ends of the front surface of the fixed cover are movably connected to protective doors via hinges, and an air supply pipe is fixedly installed on the back of the air supply valve.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model, through the setting of the hanging bracket and scale lines, allows for the suspension of the square metal cover to be processed during the powder coating process. Simultaneously, it facilitates the observation of the horizontal distance between the two sides of the square metal cover and the infrared distance sensor. Through the configuration of a PLC controller, servo motor, reciprocating screw, slider, moving frame, spray gun, infrared distance sensor, air supply valve, solenoid valve, Venturi powder pump, and powder hopper, the position of the spray gun can be reciprocated and adjusted during powder coating. This ensures uniform powder coating while simultaneously shutting off the output pipeline of the spray gun when its movement distance exceeds the coating range of the square metal cover surface. This effectively avoids dry spraying during powder coating operations, preventing significant resource waste and reducing production costs for enterprises.

[0014] 2. This utility model, through the setting of receiving holes and protective baffles, can seal the holes between the moving frame and the fixed cover, reducing the probability of powder coating spreading to the external environment. The setting of the support plate achieves the purpose of supporting the right side of the reciprocating screw, preventing the reciprocating screw from tilting due to force. The setting of the recycling hopper and recycling pipe can connect to the pipeline of external recycling equipment, making it convenient for personnel to recycle excess powder coating during the powder coating process. The setting of the support platform, support column and load-bearing base plate achieves the purpose of supporting the bottom of the fixed cover. The setting of the protective door facilitates the protection of the front of the fixed cover. The setting of the air supply pipe can connect to the output pipeline of the external air compressor storage tank. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present utility model;

[0016] Figure 2 This is a schematic diagram of the left side structure of this utility model;

[0017] Figure 3 This is a front sectional view of the fixing cover of this utility model;

[0018] Figure 4 This is a schematic diagram of the mobile frame structure of this utility model.

[0019] In the diagram: 1. Fixed cover; 2. PLC controller; 3. Support platform; 4. Support plate; 5. Reciprocating screw; 6. Fixed plate; 7. Servo motor; 8. Protective baffle; 9. Air supply valve; 10. Venturi powder pump; 11. Powder hopper; 12. Recycling hopper; 13. Moving frame; 14. Spray gun; 15. Infrared range sensor; 16. Slider; 17. Scale line; 18. Receiving hole; 19. Hanger; 20. Solenoid valve. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.

[0022] Example 1:

[0023] Please see Figures 1-4As shown, this utility model provides a powder coating device to avoid dry spraying, including a fixed cover 1 and a powder hopper 11. A Venturi powder pump 10 is fixedly installed between the right side of the powder hopper 11 and the left side of the outer surface of the fixed cover 1 via a pipe. An air supply valve 9 is fixedly installed between the back of the Venturi powder pump 10 and the left side of the outer surface of the fixed cover 1. A PLC controller 2 is fixedly installed on the right side of the outer surface of the fixed cover 1. A fixing plate 6 is fixedly connected to the top left end of the outer surface of the fixed cover 1. An infrared rangefinder is fixedly installed at the lower right end of the fixing plate 6. Sensor 15, servo motor 7 is fixedly installed on the left side of fixed plate 6, reciprocating screw 5 is fixedly installed at the output end of servo motor 7, slider 16 is threadedly connected to the left end of reciprocating screw 5, moving frame 13 is fixedly installed at the middle end of slider 16, spray gun 14 is fixedly installed at the lower end of moving frame 13, solenoid valve 20 is fixedly installed between the upper end of venturi powder pump 10 and the front surface of spray gun 14 through pipe, and hanger 19 is fixedly connected to the top of the inner cavity of fixed cover 1, and scale lines 17 are coated on the front surface of hanger 19.

[0024] In this technical solution, the hanging bracket 19 and scale line 17 allow the square metal cover to be processed during the powder coating process to be suspended, while facilitating the observation of the horizontal distance between the two sides of the square metal cover and the infrared distance sensor 15. Furthermore, the PLC controller 2, servo motor 7, reciprocating screw 5, slider 16, moving frame 13, spray gun 14, infrared distance sensor 15, air supply valve 9, solenoid valve 20, venturi powder pump 10, and powder hopper 11 enable the reciprocating adjustment of the spray gun 14 position during powder coating. This ensures uniform powder coating while simultaneously shutting off the output pipeline of the spray gun 14 when its movement exceeds the coating range of the square metal cover surface. This effectively avoids dry spraying during powder coating, preventing significant resource waste and reducing production costs for the enterprise.

[0025] It should be noted that the Venturi powder pump 10, as existing technology, is a pneumatic conveying device based on the Venturi effect, specifically designed for the efficient conveying of bulk solids such as powders and granules.

[0026] Example 2:

[0027] Based on Embodiment 1, this utility model is as follows: Figures 1-4As shown, the fixed cover 1 has receiving holes 18 at both ends of its top. The upper end of the movable frame 13 is fixedly connected to a protective baffle 8, and the surface of the protective baffle 8 is slidably connected to the surface of the receiving hole 18. The right end of the top of the outer surface of the fixed cover 1 is fixedly connected to a support plate 4. The right side of the reciprocating screw 5 is movably connected to the left side of the support plate 4 through a bearing. The bottom of the fixed cover 1 is fixedly connected to a support platform 3. The middle end of the support platform 3 is fixedly connected to a recycling hopper 12. The bottom of the recycling hopper 12 is fixedly connected to a recycling pipe. Support columns are fixedly connected around the bottom of the support platform 3, and a load-bearing base plate is fixedly connected to the bottom of the support columns. There are five solenoid valves 20 and five spray guns 14. The distance between two adjacent spray guns 14 is equal. The two ends of the front surface of the fixed cover 1 are movably connected to protective doors through hinges. An air supply pipe is fixedly installed on the back of the air supply valve 9.

[0028] In this technical solution, the holes 18 and 8 are used to seal the openings between the movable frame 13 and the fixed cover 1, reducing the chance of powder coating spreading to the external environment. The support plate 4 supports the right side of the reciprocating screw 5, preventing it from tilting due to stress. The recycling hopper 12 and recycling pipe connect to the pipeline of external recycling equipment, facilitating the recycling of excess powder during powder coating. The support platform 3, support column, and load-bearing base plate support the bottom of the fixed cover 1. The protective door protects the front of the fixed cover 1. The air supply pipe connects to the output pipeline of an external air compressor storage tank.

[0029] The working principle of this utility model is as follows: The hanging bracket 19 allows the square metal cover to be suspended during powder coating. The scale lines 17 facilitate observation of the horizontal distance between the two sides of the square metal cover and the infrared distance sensor 15. Simultaneously, the operator can input two sets of distance data into the PLC controller 2 as parameters for the subsequent opening and closing of the solenoid valve 20. The PLC controller 2 then starts the servo motor 7, which drives the reciprocating screw 5 to rotate. This rotation of the reciprocating screw 5 moves the slider 16, the moving frame 13, and the spray gun 14. Under the action of the infrared distance sensor 15, the distance to the moving frame 13 can be effectively monitored, and the monitored data can be transmitted in real time to the PLC controller 2 for processing and analysis. Furthermore, when the data monitored by the infrared distance sensor 15 is within the range between the two sides of the square metal cover and the infrared distance sensor 15... When the horizontal distance data range is within the specified range, the PLC controller 2 will correspondingly control the opening of the air supply valve 9 and the solenoid valve 20, allowing external high-pressure air to be supplied to the spray gun 14 through the air supply valve 9 and the Venturi powder pump 10. Simultaneously, as the high-pressure air passes through the Venturi powder pump 10, the powder in the powder hopper 11 follows the high-pressure air inside the Venturi powder pump 10 and is sprayed onto the surface of the square metal cover plate through the spray gun 14. Furthermore, when the moving frame 13 and the spray gun 14 move, if the data monitored by the infrared distance sensor 15 exceeds the horizontal distance data range between the two sides of the square metal cover plate and the infrared distance sensor 15, the PLC controller 2 will correspondingly control the closing of the air supply valve 9 and the solenoid valve 20, thus stopping the powder from being sprayed from the inside of the spray gun 14. This effectively avoids the phenomenon of dry spraying during powder coating operations, which would cause significant resource waste and reduce the production and usage costs for the enterprise.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.

Claims

1. A powder coating device for avoiding dry spraying, comprising a fixed cover (1) and a powder hopper (11), characterized in that: A Venturi powder pump (10) is fixedly installed between the right side of the powder hopper (11) and the left side of the outer surface of the fixed cover (1) via a pipe. An air supply valve (9) is fixedly installed between the back of the Venturi powder pump (10) and the left side of the outer surface of the fixed cover (1). A PLC controller (2) is fixedly installed on the right side of the outer surface of the fixed cover (1). A fixed plate (6) is fixedly connected to the top left end of the outer surface of the fixed cover (1). An infrared ranging sensor (15) is fixedly installed at the lower right end of the fixed plate (6). A servo motor is fixedly installed on the left side of the fixed plate (6). (7) A reciprocating screw (5) is fixedly installed at the output end of the servo motor (7). A slider (16) is threadedly connected to the left end of the reciprocating screw (5). A movable frame (13) is fixedly installed at the middle end of the slider (16). A spray gun (14) is fixedly installed at the lower end of the movable frame (13). A solenoid valve (20) is fixedly installed between the upper end of the venturi powder pump (10) and the front surface of the spray gun (14) through a pipe. A bracket (19) is fixedly connected to the top of the inner cavity of the fixed cover (1). The front surface of the bracket (19) is coated with scale lines (17).

2. The powder coating device for avoiding dry spraying according to claim 1, characterized in that: The fixed cover (1) has receiving holes (18) at both ends of its top. The upper end of the movable frame (13) is fixedly connected to a protective baffle (8). The surface of the protective baffle (8) is slidably connected to the surface of the receiving hole (18).

3. The powder coating device for avoiding dry spraying according to claim 1, characterized in that: The right end of the top of the outer surface of the fixed cover (1) is fixedly connected to the support plate (4), and the right side of the reciprocating screw (5) is movably connected to the left side of the support plate (4) through a bearing.

4. A powder coating device for avoiding dry spraying according to claim 1, characterized in that: The bottom of the fixed cover (1) is fixedly connected to a support platform (3), the middle end of the support platform (3) is fixedly connected to a recycling hopper (12), and the bottom of the recycling hopper (12) is fixedly connected to a recycling pipe.

5. A powder coating device for avoiding dry spraying according to claim 4, characterized in that: The support platform (3) is fixedly connected to support columns around its bottom, and the bottom of the support columns is fixedly connected to a load-bearing base plate.

6. A powder coating device for avoiding dry spraying according to claim 1, characterized in that: The number of solenoid valves (20) and the number of spray guns (14) are both five, and the distance between two adjacent spray guns (14) is equal.

7. A powder coating device for avoiding dry spraying according to claim 1, characterized in that: The two ends of the front surface of the fixed cover (1) are connected to protective doors by hinges, and the back of the air supply valve (9) is fixedly installed with an air supply pipe.

Images