Automatic spraying device for fasteners

Abstract

The utility model relates to the technical field of automatic spraying for fasteners, and discloses an automatic spraying device for fasteners, which comprises a main body mechanism and a spraying mechanism, the spraying mechanism is fixedly mounted in the main body mechanism, the main body mechanism comprises a spraying machine, a base and a shell, the base is fixedly mounted at the bottom end of the spraying machine, and the shell is fixedly mounted at the bottom end of the spraying machine. And a shell is fixedly mounted on the outer surface of the spraying machine. According to the stable and efficient conveying system with the efficient spraying performance, the conveying belt system can stably convey fasteners, the speed of the conveying system can be adjusted (0.5-5 m / min), and the conveying speed can be flexibly adjusted according to actual production requirements and spraying process requirements. For example, when high-quality and high-precision spraying operation is carried out, the speed of the conveying belt can be properly reduced, so that each fastener has enough time to be uniformly sprayed under a spraying gun, and the spraying quality is improved.

Description

Technical Field

[0001] This utility model relates to the field of automatic spraying technology for fasteners, specifically to an automatic spraying device for fasteners. Background Technology

[0002] With the development of industry, fasteners have long become a standardized, serialized, and universal common component, and are the most widely used mechanical components in various industries. Fasteners are used for a long time and are usually in harsh environments, requiring functional spraying such as anti-corrosion coating on the surface. At present, the degree of automation of fastener spraying equipment is low, and manual work is more common, which is not conducive to the health of operators. However, automated equipment is limited by the degree of freedom of the spray gun, and the spraying quality is difficult to meet the requirements. Some corners are not sprayed properly, or the spraying is uneven.

[0003] The existing patent document CN 213557911 U discloses an automatic spraying device for fasteners, including a spraying chamber, a spraying assembly, and a tooling assembly. The two side walls facing each other of the spraying chamber are respectively provided with loading and unloading doors. The spraying assembly is a spray gun assembly formed by five-axis linkage. The tooling assembly can realize lifting and rotational movements.

[0004] However, existing coatings lack a drying structure after spraying, which prevents the solvents and moisture in the paint from evaporating quickly and completely, thus failing to form a high-quality coating. This may lead to quality problems such as blistering and peeling. Utility Model Content

[0005] (a) Technical problems to be solved

[0006] The purpose of this invention is to provide an automatic spraying device for fasteners to solve the quality problems mentioned in the background art that cause the coating to blister and peel off.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, the present invention provides the following technical solution: an automatic spraying device for fasteners, comprising a main body and a spraying mechanism, wherein the spraying mechanism is fixedly installed inside the main body, and the main body includes a sprayer, a base, and a housing, wherein the base is fixedly installed at the bottom of the sprayer, and the housing is fixedly installed on the outer surface of the sprayer.

[0009] The spraying mechanism includes a bracket, a spray gun, and a paint storage container. The bracket is fixedly installed at the top of the spraying machine, the spray gun is fixedly installed at the bottom of the bracket, and the paint storage container is fixedly installed on one side of the spraying machine.

[0010] Furthermore, the main structure also includes a conveyor belt and fasteners. The front end of the spraying machine is fixedly installed with a conveyor belt, the surface of the conveyor belt is fixedly installed with anti-slip texture, and the top end of the conveyor belt is fixedly installed with fasteners.

[0011] Furthermore, the main structure also includes a motor and rollers. The motor is fixedly installed inside the spraying machine, and rollers are fixedly installed on both sides of the conveyor belt.

[0012] Furthermore, the main structure also includes baffles and positioning grooves, with baffles fixedly installed on both sides of the conveyor belt and positioning grooves fixedly installed at the bottom of the fasteners.

[0013] Furthermore, the spraying mechanism also includes pipes and a drying box, with the pipes fixedly installed at the top of the support and the drying box fixedly installed at the tail end of the conveyor belt.

[0014] Furthermore, the spraying mechanism also includes a ventilation pipe and a fan, and the drying chamber is fixedly installed with a ventilation pipe and a fan.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. High-efficiency spraying performance and a stable and efficient conveyor system: The conveyor belt system stably transports fasteners at an adjustable speed (0.5–5 m / min), allowing for flexible adjustment based on actual production needs and spraying process requirements. For example, during high-quality, high-precision spraying operations, the conveyor belt speed can be appropriately reduced, ensuring each fastener has sufficient time to receive uniform spraying under the spray gun, thereby improving spraying quality. This adjustable conveying method effectively improves production efficiency and adapts to different batches and types of fastener spraying tasks. 2. Precise spraying operation: The spray gun system can be flexibly configured according to the shape, size, and spraying requirements of the fasteners. Multiple spray guns can spray fasteners with complex shapes from different angles, ensuring that all parts are covered by paint. Simultaneously, by precisely controlling parameters such as the type of spray gun, paint flow rate, and spraying pressure, uniform and high-quality spraying effects can be achieved. For example, electrostatic spray guns utilize the principle of electrostatic adsorption, causing the paint to adhere tightly to the fastener surface, not only improving paint utilization but also resulting in a more uniform and aesthetically pleasing appearance after spraying. Excellent quality control and uniform coating quality are ensured by the precise control of spraying parameters, such as paint flow rate, spraying speed, and spray gun angle, by the automated spraying system. This guarantees a uniform coating thickness on the fastener surface. Compared to manual spraying, automated spraying avoids problems such as uneven coating thickness and missed areas caused by human factors. This uniform coating quality helps improve the fastener's corrosion resistance, appearance quality, and service life, which is especially important for fasteners requiring high-quality surface treatment. A reliable drying process and drying structure provide a stable and uniform drying environment for the sprayed fasteners, allowing the solvents and moisture in the paint to evaporate quickly and completely, forming a high-quality coating. Appropriate drying temperature and ventilation conditions prevent quality problems such as blistering and peeling, ensuring stable and reliable coating quality for the fasteners.

[0017] 2. Reduced Labor Costs: Automated spraying processes reduce reliance on manual operation, significantly lowering labor costs. Compared to manual spraying, automated spraying equipment can operate continuously without human intervention, requiring only a small number of operators for monitoring and maintenance. Furthermore, automated spraying equipment is highly efficient, capable of completing large-scale fastener spraying tasks in a short time, further improving production efficiency and reducing labor costs per unit product. Safety and Environmental Advantages: Reduced Exposure to Harmful Substances: During automated spraying, operators' contact with paint is greatly reduced. Paints may contain volatile organic compounds (VOCs) and other harmful substances. Automated spraying equipment keeps operators away from the spraying area, preventing direct inhalation of harmful gases or contact with paint, thus ensuring the health and safety of operators. Attached Figure Description

[0018] Figure 1This is a three-dimensional structural diagram of the present invention;

[0019] Figure 2 This is a schematic diagram of the structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model.

[0022] In the diagram: 1. Main structure; 101. Sprayer; 102. Base; 103. Outer shell; 104. Conveyor belt; 105. Fastener; 106. Motor; 107. Roller; 108. Baffle; 109. Positioning groove; 2. Spraying mechanism; 201. Bracket; 202. Spray gun; 203. Paint storage container; 204. Pipeline; 205. Drying oven; 206. Ventilation pipe; 207. Fan. Detailed Implementation

[0023] 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.

[0024] Please see Figure 1 - Figure 4 This utility model provides a technical solution: an automatic spraying device for fasteners, including a main body 1 and a spraying mechanism 2. The spraying mechanism 2 is fixedly installed inside the main body 1. The main body 1 includes a spraying machine 101, a base 102, and a shell 103. The base 102 is fixedly installed at the bottom of the spraying machine 101, and the shell 103 is fixedly installed on the outer surface of the spraying machine 101.

[0025] The spraying mechanism 2 includes a bracket 201, a spray gun 202, and a paint storage container 203. The bracket 201 is fixedly installed at the top of the spraying machine 101, the spray gun 202 is fixedly installed at the bottom of the bracket 201, and the paint storage container 203 is fixedly installed on one side of the spraying machine 101.

[0026] Furthermore, the main body 1 also includes a conveyor belt 104 and fasteners 105. The front end of the spraying machine 101 is fixedly installed with the conveyor belt 104, the surface of the conveyor belt 104 is fixedly installed with anti-slip texture, and the top end of the conveyor belt 104 is fixedly installed with fasteners 105.

[0027] Furthermore, the main body 1 also includes a motor 106 and rollers 107. The motor 106 is fixedly installed inside the spraying machine 101, and rollers 107 are fixedly installed on both sides of the conveyor belt 104.

[0028] Furthermore, the main body mechanism 1 also includes a baffle 108 and a positioning groove 109. The baffle 108 is fixedly installed on both sides of the conveyor belt 104, and the positioning groove 109 is fixedly installed at the bottom of the fastener 105.

[0029] Furthermore, the spraying mechanism 2 also includes a pipe 204 and a drying box 205. The pipe 204 is fixedly installed at the top of the support 201, and the drying box 205 is fixedly installed at the tail end of the conveyor belt 104.

[0030] Furthermore, the spraying mechanism 2 also includes a ventilation pipe 206 and a fan 207. The ventilation pipe 206 is fixedly installed inside the drying box 205, and the fan 207 is fixedly installed inside the drying box 205.

[0031] Working Principle: The conveyor belt 104 system, material and characteristics of conveyor belt 104: Conveyor belt 104 is made of rubber or PVC. Rubber conveyor belt 104 has good wear resistance, elasticity, and tear resistance, capable of withstanding a certain weight of fasteners 105 without easy damage. PVC conveyor belt 104 has good corrosion resistance and chemical stability, suitable for use in environments where it may come into contact with chemical coatings. The surface of conveyor belt 104 has anti-slip textures to prevent fasteners 105 from slipping during conveying. Its width is determined according to the size of the fasteners 105 and production requirements, ranging from 30 to 100 cm, while the length is determined according to the layout of the entire spraying unit, ranging from 3 to 10 meters.

[0032] The drive method and speed adjustment: the conveyor belt 104 is driven by the motor 106 through the roller 107. The motor 106 is an AC motor, and its speed can be adjusted by a frequency converter. Depending on the production process requirements, the speed of the conveyor belt 104 can vary between 0.5 and 5 meters per minute. For example, in cases requiring fine spraying, the speed of the conveyor belt 104 can be reduced, allowing the fasteners 105 to remain under the spray gun 202 for a longer time, ensuring a better spraying effect.

[0033] A positioning device, or mechanical positioning method, is used to ensure the accurate positioning of the fastener 105 on the conveyor belt 104. This mechanical positioning device may include baffles 108 or positioning grooves 109. Baffles 108 are installed on both sides of the conveyor belt 104. By adjusting the spacing of the baffles 108, different sizes of fasteners 105 can be accommodated, allowing the fastener 105 to move along a fixed path. Positioning grooves 109 are grooves on the conveyor belt 104 that match the shape of the fastener 105. Placing the fastener 105 within these grooves ensures accurate positioning, which is beneficial for subsequent painting operations.

[0034] The spray gun 202 system includes various types such as air spray guns, airless spray guns, and electrostatic spray guns. Air spray guns atomize paint using compressed air and spray it onto fasteners 105, producing finer paint particles for uniform coating and suitable for various paint types. Airless spray guns utilize the pressure of the paint itself, without compressed air, resulting in faster spray speeds and higher flow rates, making them suitable for large-area spraying and high-viscosity paints. Electrostatic spray guns establish an electrostatic field between the spray gun and fastener 105, attracting paint to the fastener under the influence of the electric field. This type of spray gun improves paint utilization, reduces waste, and enhances paint adhesion to the fastener surface.

[0035] The number and layout of the spray guns 202 are determined based on the shape, size, and coating requirements of the fastener 105. For fasteners 105 with simple shapes, only one or two spray guns 202 may be needed to complete the coating; for fasteners 105 with complex shapes, such as those with multiple holes or grooves, multiple spray guns 202 may be needed to spray from different angles to ensure that every part is covered by paint. The spray guns 202 are mounted on a fixed bracket 201 above the conveyor belt 104. The bracket 201 can adjust the height, angle, and position of the spray guns 202 so that they can be accurately aimed at the fastener 105 for coating.

[0036] The paint supply system includes a paint storage container 203, which is made of stainless steel or plastic. Stainless steel containers have good corrosion resistance and are suitable for storing various types of paints, especially those containing solvents. Plastic containers, such as polyethylene containers, are lighter and less expensive, making them suitable for storing water-based paints. The container capacity is determined based on the production scale and paint usage, ranging from 10 to 100 liters.

[0037] The paint delivery method and flow control involve conveying the paint from the storage container to the spray gun 202 via pipe 204. The drying method and equipment utilize hot air drying, a common method. Hot air is generated by a heating device and then blown onto the sprayed fasteners 105 to quickly dry the paint. The heating device can be an electric heating element or a gas burner. Electric heating elements generate heat through the thermal effect of electric current, offering rapid heating and precise temperature control. Gas burners utilize the heat generated by burning gas, providing high heating power and suitability for large-scale production.

[0038] The drying oven 205 is the main equipment for hot air drying. It contains ventilation ducts 204 and a fan 207. The fan 207 blows hot air to all corners inside the drying oven 205 to ensure that the fasteners 105 are heated evenly. The temperature of the drying oven 205 can be adjusted according to the type and requirements of the coating, and is between 60 and 150°C.

[0039] Ventilation control plays a crucial role; good ventilation removes solvent vapors and moisture generated during the drying process, improving drying efficiency. Within the drying chamber 205, the design of the ventilation duct 204 and the rotational speed of the fan 207 significantly impact ventilation effectiveness. The ventilation duct 204 must ensure that hot air is evenly distributed within the drying chamber 205, while the fan speed can be adjusted according to the solvent evaporation rate and the size of the drying chamber 205. Proper ventilation prevents solvent vapor from accumulating within the drying chamber 205, avoiding safety hazards, and also helps maintain a stable drying environment, improving the drying quality of the coating.

[0040] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. An automatic spraying device for fasteners, comprising a main body (1) and a spraying mechanism (2), wherein the spraying mechanism (2) is fixedly installed inside the main body (1), characterized in that: The main body (1) includes a sprayer (101), a base (102), and a shell (103). The base (102) is fixedly installed at the bottom of the sprayer (101), and the shell (103) is fixedly installed on the outer surface of the sprayer (101). The spraying mechanism (2) includes a bracket (201), a spray gun (202), and a paint storage container (203). The bracket (201) is fixedly installed at the top of the spraying machine (101), the spray gun (202) is fixedly installed at the bottom of the bracket (201), and the paint storage container (203) is fixedly installed on one side of the spraying machine (101).

2. The automatic spraying device for fasteners according to claim 1, characterized in that: The main body (1) also includes a conveyor belt (104) and fasteners (105). The front end of the spraying machine (101) is fixedly installed with the conveyor belt (104). The surface of the conveyor belt (104) is fixedly installed with anti-slip texture. The top end of the conveyor belt (104) is fixedly installed with fasteners (105).

3. An automatic spraying device for fasteners according to claim 2, characterized in that: The main body (1) also includes a motor (106) and a roller (107). The motor (106) is fixedly installed inside the spraying machine (101), and the rollers (107) are fixedly installed on both sides of the conveyor belt (104).

4. An automatic spraying device for fasteners according to claim 3, characterized in that: The main body (1) also includes a baffle (108) and a positioning groove (109). The baffle (108) is fixedly installed on both sides of the conveyor belt (104), and the positioning groove (109) is fixedly installed at the bottom of the fastener (105).

5. An automatic spraying device for fasteners according to claim 4, characterized in that: The spraying mechanism (2) also includes a pipe (204) and a drying box (205). The pipe (204) is fixedly installed at the top of the support (201), and the drying box (205) is fixedly installed at the tail end of the conveyor belt (104).

6. An automatic spraying device for fasteners according to claim 5, characterized in that: The spraying mechanism (2) also includes a ventilation pipe (206) and a fan (207). The drying box (205) is fixedly installed with the ventilation pipe (206) and the drying box (205) is fixedly installed with the fan (207).

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