CN204620302U - A kind of metal surface automation paint line - Google Patents

Abstract

The utility model discloses an automatic coating production line for metal surfaces, which comprises a first coating area and a second coating area; the first coating area and the second coating area are sequentially equipped with a dehumidification device and a dust removal system , automatic painting device, leveling area, baking area and cooling area; objects to be coated pass through the conveyor in the first coating area, in the second coating area and between the first coating area and the second coating area Transmission between; the coating production line is set in a clean room. The metal surface automatic coating production line provided by the utility model adopts automatic coating technology to replace the traditional high-pollution and high-emission electroplating process, which improves work efficiency and reduces labor costs; The exhaust gas and waste water generated in the process are collected and treated, which reduces the pollution of the atmosphere and water by coating.

Description

A metal surface automatic coating production line

technical field

The utility model relates to a coating equipment, in particular to a production line for automatic coating of metal surfaces.

Background technique

Electroplating is the process of plating a thin layer of other metals or alloys on the surface of certain metals using the principle of electrolysis. It is a process of using electrolysis to attach a layer of metal film to the surface of metal or other material parts to prevent metal oxidation. Improve wear resistance, electrical conductivity, reflective properties, corrosion resistance and improve appearance. Traditional electroplating is an important step in the surface treatment of materials, but the waste gas, waste water and slag generated during the electroplating process have a great impact on the living environment of human beings and cause serious pollution, especially if the raw material sodium cyanide required for traditional electroplating is used improperly, it is easy to affect Human health, with the growing demand for health and the increasingly stringent monitoring of the environment by the country, traditional electroplating can no longer meet the existing social requirements; at the same time, the cost of electroplating products is relatively high, which increases the production of enterprises. cost.

Spraying operation is an important link in industrial production, which directly determines the appearance quality of industrial products; the spraying operation is mainly to place the pre-coated workpiece in the spray booth, and use the spray gun in the spray booth to atomize the liquid from it, so that the atomized The paint film adheres to the surface of the workpiece to form a paint film.

Contents of the invention

Aiming at the deficiencies of the prior art, the purpose of this utility model is to provide an automatic metal surface coating production line with low production cost, high production efficiency and little environmental pollution, which can replace the traditional high-pollution and high-emission electroplating process.

The technical solution adopted by the utility model to solve the technical problem is: a metal surface automatic coating production line, the automatic coating production line includes a first coating area and a second coating area, and the first coating area is The primer coating area, the second coating area is the top paint coating area; the first dehumidification device, the first dust removal system, the first automatic paint spraying device, the first streamline Leveling area, first baking area and first cooling area; the second dehumidification device, second dust removal system, second automatic painting device, second leveling area, second baking area are arranged in sequence in the second coating area The baking area and the second cooling area; the object to be coated is conveyed in the first coating area, in the second coating area and between the first coating area and the second coating area by a conveyor; the coating The production line is set up in the clean room;

The first dust removal system and the second dust removal system both include a manual dust removal device and an automatic dust removal device;

The first automatic paint spraying device and the second automatic paint spraying device are both water curtain spray booths, and the spray paint booths include a chamber body, a static pressure air supply system, an exhaust system, a water curtain plate, a circulating pump valve system and paint mist Filtration system; the exhaust system is connected to the tail gas treatment system through the exhaust pipe; the paint mist filtration system is connected to the waste water treatment system;

The first leveling zone, the first baking zone and the first cooling zone are of an integral structure, and the second leveling zone, the second baking zone and the second cooling zone are also of an integral structure; each of the The integrated structure of each includes a box body, and a separated box plate is arranged in the box body; a conveyor belt is arranged in the box body;

The tops of the first roasting zone and the second roasting zone are equipped with forced exhaust gas devices; the forced exhaust gas devices are connected to the tail gas treatment system through pipelines.

Further, the paint mist filtration system includes a water storage tank located at the bottom of the spray booth and a baffle air-water separator located at one side of the spray booth, the bottom of the baffle air-water separator is connected to the water storage tank ; The water storage tank is longitudinally provided with a number of filter baffles; the baffle plate air-water separator is longitudinally distributed with a number of baffle plates; the outlet of the water storage tank is connected to the waste water treatment system.

Further, the static pressure air supply system includes an air supply port, a static pressure box and a partition high-efficiency filter; the filtration efficiency of the partition high-efficiency filter for air reaches 99.99%.

Further, the exhaust gas treatment system is mainly composed of an exhaust pipe, a gas-water separator, a water treatment layer, a waste water outlet, a glass fiber filter box, an activated carbon box group, and an exhaust outlet; The pipeline is connected with the gas-water separator, and the upper part of the gas-water separator is connected with the glass fiber filter box through the exhaust pipe, and the rear of the glass fiber filter box is provided with an activated carbon box group and a waste gas discharge port in turn; the gas-water separator The lower part of the device is connected with the water treatment layer, and the lower part of the water treatment layer is provided with a waste water output port, and the preliminarily treated waste water enters the waste water treatment system through the waste water output port.

Further, several filament heating modules are provided on the top of the first baking area and the second baking area, and each of the filament heating modules is independent; the first baking area and the second baking area In the baking area, the method of segmented temperature control is adopted.

Further, the first dehumidification device and the second dehumidification device are both electric heating preheating ovens; quartz far-infrared heating tubes are installed in the preheating ovens, and aluminum reflective tubes are installed on the heating tubes. lampshade.

Further, the manual dedusting device is a downdraft type; the automatic dedusting device is equipped with an ion generator capable of generating positive and negative ions.

Further, several water baffles are arranged in the air suction duct.

The beneficial effects of the utility model are: compared with the prior art, the metal surface automatic coating production line provided by the utility model has the following advantages:

(1) Automatic spraying and curing are used to replace manual operations, which reduces unstable factors, reduces loss of time, improves work efficiency, and reduces labor costs;

(2) The coating is made of environmentally friendly materials, and it is completed in a closed and dust-free space, which improves the working environment of the workers, and collects and treats the waste gas and waste water generated during the production process, reducing the pollution of the atmosphere and water by coating;

(3) The traditional high-pollution and high-emission electroplating process is replaced by automatic coating technology, which greatly reduces the pollution of heavy metals to the environment and also reduces production costs.

Description of drawings

Fig. 1 is the schematic diagram of the utility model metal surface automatic coating production line.

Fig. 2 is the schematic diagram of the spray booth in the utility model.

Fig. 3 is a schematic diagram of the baking zone in the present invention.

Fig. 4 is a schematic diagram of the tail gas treatment system of the present invention.

In the figure, 1-the first dehumidification device; 2-the first automatic dust removal device; 3-the first manual dust removal device; 4-the first automatic painting device; 5-the first leveling area; 6-the first baking area; 7 - the first cooling zone; 8- the second manual dust removal device; 9- the second automatic dust removal device; 10- the second automatic painting device; 11- the second leveling zone; 12- the second baking zone; 13- the second Second cooling zone; 14-Second dehumidification device; 15-Conveyor; 16-Exhaust gas discharge port; 17-Gas-water separator; 18-Water treatment layer; ;22-glass fiber filter box; 23-activated carbon box group; 41-air supply port; 42-static pressure box; 43-partition high-efficiency filter; Water separator; 47-reservoir; 48-filter baffle; 61-access door; 62-forced exhaust device; 63-IR lamp.

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Example

As shown in Figure 1, a kind of metal surface automatic coating production line, described automatic coating production line comprises the first coating area and the second coating area, described first coating area is primer coating area, so The second painting area described above is the topcoat painting area; the first dehumidifying device 1, the first dust removal system, the first automatic painting device 4, the first leveling area 5, the first A baking zone 6 and a first cooling zone 7; a second dehumidification device 14, a second dust removal system, a second automatic painting device 10, a second leveling zone 11, a second The baking area 12 and the second cooling area 13; the objects to be coated are transported in the first coating area, in the second coating area and between the first coating area and the second coating area through the conveyor 15. The coating production line is set in a clean room; the dust particle size in the clean room is less than 5um, and the humidity is close to the natural humidity.

The first dehumidification device 1 and the second dehumidification device 14 are both electric heating preheating ovens; quartz far-infrared heating tubes are arranged in the preheating ovens, and aluminum reflective lampshades are arranged on the heating tubes .

The first dust removal system includes a first manual dust removal device 3 and a first automatic dust removal device 2 ; the second dust removal system includes a second manual dust removal device 8 and a second automatic dust removal device 9 . The first and second manual dedusting devices described above are of the downdraft type, which are used for electrostatic dust removal before painting, neutralize the original static electricity of the workpiece, and eliminate the ability of the workpiece to absorb dust. At the same time, the high-pressure air can remove the original surface of the workpiece The dust is blown off, improving the material yield, laying the foundation for high-quality spraying, and eliminating the potential safety hazards of static electricity. The first and second automatic dedusting devices have a built-in negative feedback ion balance automatic adjustment device, the ion balance voltage is <0±5V, and the fast static removal time is 1.0-3.0S. The ionization device is equipped with a special cleaner, which can be used regularly Clean the dust, effectively reduce the failure rate of the ion gun, and improve the service life of the ion gun. The ion gun is a high-efficiency static elimination device. Through the high-pressure air flow, a large number of positive and negative ions generated by the ion generating device are quickly blown to the area to be destaticized, neutralizing the electrostatic charge accumulated on the object, and at the same time, the high-speed ion air flow will attract the static electricity. Dust particles are blown away and prevented from attracting dust particles again.

As shown in Figure 2, the first automatic paint spraying device 4 and the second automatic paint spraying device 10 are both water curtain spray paint booths, and the paint spray booths include a chamber body 44, a static pressure air supply system, an exhaust system 20, water Curtain panels, circulation pump valve system and paint mist filtration system; the exhaust system 20 is connected to the exhaust gas treatment system through the exhaust pipe 19, and several water baffles are arranged in the exhaust pipe 19; the paint mist filtration system is connected with the waste water The processing system is connected.

The paint mist filtration system includes a water storage tank 47 located at the bottom of the spray booth and a baffle air-water separator 46 located on one side of the spray booth, the bottom of the baffle air-water separator 46 is connected to the water storage tank 47 connected; the water storage tank 47 is longitudinally provided with several filter baffles 48; the baffle plate air-water separator 46 is longitudinally distributed with several baffle plates 45; the outlet of the water storage tank 47 is connected to the waste water treatment system . The recovery of paint mist can be divided into two parts: one is when the workpiece is sprayed, the paint mist collides with the water curtain and mixes, and the water curtain will dissolve part of the paint mist and fall into the water storage tank, which will be filtered by the filter baffle and discharged into the wastewater treatment system; The second is that the paint mist that has not been dissolved in the water curtain enters the water washing room, fully mixes with the water mist from the atomizing nozzle, passes through the baffle air-water separator, and the paint mist collides with the baffle, and the paint mist adheres to the surface. The baffle plate separates it from the air, and after the paint mist settles, it flows into the water storage tank and is discharged into the wastewater treatment system.

The static pressure air supply system includes an air supply port 41, a static pressure box 42 and a partition high-efficiency filter 43; the filtration efficiency of the partition high-efficiency filter 43 for air reaches 99.99%. The air supply from the top and the exhaust from the bottom should be uniform and form a slight positive pressure to prevent external dust particles from entering the room.

The first leveling zone 5, the first baking zone 6 and the first cooling zone 7 are integrally structured, and the second leveling zone 11, the second baking zone 12 and the second cooling zone 13 are also integrated structure; each of the integrated structures includes a box body, and separate box panels are arranged in the box body; conveyor belts are arranged in the box body.

As shown in FIG. 3 , the tops of the first roasting zone 6 and the second roasting zone 12 are provided with a forced exhaust gas device 62 ; the forced exhaust gas device 62 is connected to the tail gas treatment system through pipelines. The top in the first baking area 6 and the second baking area 12 is provided with several IR lamp tubes 63, and the height of each of the IR lamp tubes 63 can be adjusted up and down; the first baking area 6 and the second baking zone 12 adopt the method of segmented temperature control. Inspection doors 61 are provided on the sides of the first baking zone 6 and the second baking zone 12 .

As shown in Figure 4, the tail gas treatment system is mainly composed of an exhaust pipe 19, a gas-water separator 17, a water treatment layer 18, a waste water output port 21, a glass fiber filter box 22, an activated carbon box group 23 and an exhaust gas discharge port 16. The exhaust system 20 of the spray booth is connected to the gas-water separator 17 through the exhaust duct 19, and the top of the gas-water separator 17 is connected to the glass fiber filter box 22 through the exhaust duct, and the rear of the glass fiber filter box 22 Activated carbon box group 23 and exhaust gas discharge port 16 are provided in turn; adopt diameter as 4mm * 6mm long particle, briquette-shaped activated carbon in the activated carbon box group 23, point adsorption value 550mg/g. The lower part of the gas-water separator 17 is connected to the water treatment layer 18, and the lower part of the water treatment layer 18 is provided with a waste water outlet 21, through which the preliminarily treated waste water enters the waste water treatment system.

The production process of the above-mentioned automatic coating of metal surfaces mainly includes the following processes: assembly of upper parts→preheating and dehumidification→manual electrostatic dust removal→automatic electrostatic dust removal→primer spraying→one-time leveling→one-time baking→one-time cooling→off-line to vacuum Coating → on-line → dehumidification → dust removal → automatic topcoat spraying → secondary leveling → secondary baking → secondary cooling → blanking; the objects to be coated are conveyed between the various processes by the conveyor; the conveying of the conveyor The speed is 3m/min. The temperature of the preheating and dehumidification is controlled at 45-55°C; the time of the automatic electrostatic dust removal is 1.0-3.0s; the temperature of the first baking and the second baking is controlled between 220±5°C; The time for the first leveling and the second leveling is controlled between 15±2min; the time for the first baking and the second baking is controlled between 30±2min.

The above embodiments are only used to illustrate the utility model, but not to limit the utility model. Those of ordinary skill in the relevant technical fields can also make various changes and modifications without departing from the spirit and scope of the utility model. , so all equivalent technical solutions also belong to the category of the utility model, and the patent protection scope of the utility model should be defined by the claims.

Claims (8)

1. A metal surface automatic coating production line, characterized in that: said automatic coating production line comprises a first coating area and a second coating area, said first coating area is a primer coating area, and said The second painting area mentioned above is the topcoat painting area; the first dehumidification device, the first dust removal system, the first automatic painting device, the first leveling area, the first baking area and the first cooling area; the second coating area is equipped with a second dehumidification device, a second dust removal system, a second automatic painting device, a second leveling area, a second baking area and a second cooling area in sequence ; The object to be coated is conveyed in the first coating area, in the second coating area, and between the first coating area and the second coating area by a conveyor; the described coating production line is arranged in a dust-free workshop ; The first dust removal system and the second dust removal system both include a manual dust removal device and an automatic dust removal device; The first automatic paint spraying device and the second automatic paint spraying device are both water curtain spray booths, and the spray paint booths include a chamber body, a static pressure air supply system, an exhaust system, a water curtain plate, a circulating pump valve system and paint mist Filtration system; the exhaust system is connected to the tail gas treatment system through the exhaust pipe; the paint mist filtration system is connected to the waste water treatment system; The first leveling zone, the first baking zone and the first cooling zone are of an integral structure, and the second leveling zone, the second baking zone and the second cooling zone are also of an integral structure; each of the The integrated structure of each includes a box body, and a separated box plate is arranged in the box body; a conveyor belt is arranged in the box body; The tops of the first roasting zone and the second roasting zone are equipped with forced exhaust gas devices; the forced exhaust gas devices are connected to the tail gas treatment system through pipelines. 2. A metal surface automatic coating production line as claimed in claim 1, characterized in that: the paint mist filtration system includes a water storage tank at the bottom of the spray booth and a baffle air filter at one side of the spray booth. A water separator, the bottom of the baffle air-water separator is connected to the water storage tank; a number of filter baffles are longitudinally arranged in the water storage tank; a number of baffles are longitudinally distributed in the baffle air-water separator plate; the outlet of the water storage tank is connected with the waste water treatment system. 3. A metal surface automatic coating production line as claimed in claim 1, characterized in that: the static pressure air supply system includes an air supply port, a static pressure box and a clapboard high efficiency filter; the clapboard high efficiency filter The air filtration efficiency reaches 99.99%. 4. A metal surface automatic coating production line as claimed in claim 1, characterized in that: the exhaust gas treatment system is mainly composed of an exhaust pipe, a gas-water separator, a water treatment layer, a waste water output port, and a glass fiber filter box , activated carbon box group and exhaust gas outlet; the exhaust system of the spray painting room is connected with the air-water separator through the exhaust pipe, and the upper part of the air-water separator is connected with the glass fiber filter box through the exhaust pipe, and the glass fiber filter The rear of the tank is provided with an activated carbon box group and a waste gas discharge port in turn; the bottom of the gas-water separator is connected to the water treatment layer, and a waste water output port is provided under the water treatment layer, and the preliminarily treated waste water passes through the waste water output port. into the wastewater treatment system. 5. A metal surface automatic coating production line as claimed in claim 1, characterized in that: several filament heating modules are arranged on the top of the first baking area and the second baking area, each of which The filament heating module described above is independent; both the first baking zone and the second baking zone adopt the method of segmented temperature control. 6. A metal surface automatic coating production line as claimed in claim 1, characterized in that: said first dehumidifier and second dehumidifier are both electric heating preheating ovens; said preheating ovens A quartz far-infrared heating tube is arranged inside, and an aluminum reflective lampshade is arranged on the heating tube. 7. A metal surface automatic coating production line as claimed in claim 1, characterized in that: said manual dedusting device is a down draft type; said automatic dedusting device is equipped with an ion generator capable of generating positive and negative ions . 8. An automatic metal surface coating production line as claimed in claim 1, characterized in that: said air duct is provided with several water baffles.