Manufacturing method of screen

Abstract

The invention discloses a manufacturing method of a screen. The manufacturing method comprises the steps of cutting, fixing, ultrasonic cleaning, plasma activation, coating spraying, air drying, heating curing and cooling. The passing rate of the screen is increased, the strength and the wear resistance of the screen are enhanced, the loss of the screen is reduced, and the service life of the screen is prolonged.

Description

Technical Field

[0001] The present invention belongs to the technical field of screen manufacturing, and specifically relates to a manufacturing method of a screen. Background Art

[0002] A screen is a commonly used product in the screening industry, which is woven by interlacing wire meshes and is used for classifying and screening object particles. According to different application scenarios and requirements, the screen has different mesh sizes according to international, national, industrial, and enterprise standards. According to the international general rule, the aperture size of the screen is usually expressed by "mesh number".

[0003] For the screens in the screening industry, most of the screen apertures range from 20 meshes to 500 meshes. The larger the mesh number, the smaller the diameter of the passing particle size. As the size of the particles to be screened continues to decrease, high-mesh screens often have problems such as particles getting stuck in the pores and blocking the screen during use. At the same time, due to the blockage, the accumulation of materials on the upper layer of the screen is aggravated, resulting in excessive load on the screen and finally failure due to breakage. In addition, due to the vibration and friction of the materials during the screening process, the ordinary screens in the prior art are easily worn and broken due to the relative movement with the materials, resulting in a reduction in the screening ability. Utility Model Content

[0004] In view of the defects of the screens in the above-mentioned prior art, the present invention provides a manufacturing method of a screen, which improves the passing rate of the screen, enhances the strength and wear resistance of the screen, reduces the loss of the screen, and prolongs the service life of the screen.

[0005] Technical Solution

[0006] In order to achieve the above technical purpose, a manufacturing method of a screen provided by the present invention is characterized in that it includes the following steps:

[0007] (a) Cutting;

[0008] (b) Fixing;

[0009] (c) Ultrasonic cleaning;

[0010] (d) Plasma activation;

[0011] (e) Spraying a coating;

[0012] (f) Air drying;

[0013] (g) Heating and curing;

[0014] (h) Cooling.

[0015] It is noted that after the step (c) of ultrasonic cleaning, a further drying treatment is carried out.

[0016] In the above-mentioned step (h), after cooling, it is naturally air-dried, and after receiving the materials, it is inspected and stored in the warehouse.

[0017] In the above-mentioned step (a), set the cutting program to automatically cut according to the width of the stainless steel mesh roll fed into the cutting device.

[0018] In the above-mentioned step (b), after cutting, use a square or rectangular automatic or manual fixed clamping arm to flatten the cut screen, ensure that the four sides of the screen are evenly stressed, avoid wrinkles and adhesion, and then send it into the ultrasonic cleaning device.

[0019] In the above-mentioned step (c), the ultrasonic cleaning equipment is an inclined insertion type, vertical type or horizontal type cleaning compartment. Start the ultrasonic generating device to clean the screen, and the cleaning time is 5 min - 30 min.

[0020] In the above-mentioned step (d), the cleaned screen is sent into the plasma activation equipment. Put the cleaned and dried screen into the plasma activation equipment, and perform surface modification pretreatment on the screen through the plasma beam, deeply clean, activate the substrate, strengthen the coating penetration, and improve the adhesion.

[0021] In the above-mentioned step (e), use a nano atomization device to spray and coat the coating in two ways. The specific process includes:

[0022] (III) Spraying: The atomizing spray gun evenly sprays both sides of the screen. Perform spraying operation on a single stainless steel woven screen. Use upper and lower spraying heads, and spray the screen on the conveyor belt perpendicular to the advancing direction of the hollow conveyor belt on the plane. The entire spraying process is carried out in a fully enclosed environment to avoid the influence of the external environment on the working area.

[0023] (IV) Coating: Use a brush head to directly contact the surface of the screen and apply the fluorosilicon material specially configured for the screen to obtain a mesh sheet with a superhydrophobic coating.

[0024] In the above-mentioned step (e), use an oven for heating and curing, set the temperature at 210° to 232°, and the drying and curing time is 1.6 hours to 2 hours.

[0025] In the above-mentioned step (h), use automatic cooling, and the cooling time is not less than 30 min.

[0026] Beneficial effects

[0027] The present invention provides a manufacturing method for a screen, including several steps such as cutting, fixing, ultrasonic cleaning, plasma activation, spraying the coating, air drying, heating and curing, and cooling. It improves the passing rate of the screen, enhances the strength and wear resistance of the screen, reduces the loss of the screen, and prolongs the service life of the screen. Description of the drawings

[0028] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other related drawings can also be obtained based on these drawings.

[0029] Attached Figure 1 is a schematic diagram of the steps of the embodiments of the present utility model; Specific embodiments

[0030] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present application.

[0031] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of the present application are only for the purpose of illustration and do not represent the only implementation manner.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality of" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0033] In the present application, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature can be that the first feature is in direct contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "below" and "beneath" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the first feature has a lower horizontal height than the second feature.

[0034] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as commonly understood by those skilled in the technical field to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more of the related listed items.

[0035] Embodiment

[0036] For the screening meshes in the screening industry, most of the mesh apertures range from 20 mesh to 500 mesh. The larger the mesh number, the smaller the diameter of the particles passing through. As the size of the particles to be screened continues to decrease, high-mesh screening meshes often have problems such as particles getting stuck in the pores and clogging the mesh during use. At the same time, due to the clogging, the accumulation of materials on the upper layer of the mesh is aggravated, resulting in an overloaded mesh and finally failure due to breakage. In addition, due to the vibration and friction of the materials during the screening process, the ordinary screening meshes in the prior art are easily worn and broken due to relative movement with the materials, resulting in a reduction in screening capacity.

[0037] To solve this problem, a manufacturing method of a screening mesh provided in this embodiment includes several steps: cutting, fixing, ultrasonic cleaning, plasma activation, spraying a coating, air drying, heat curing, and cooling. Among them, after ultrasonic cleaning, further drying treatment is carried out.

[0038] The specific implementation process of this embodiment is as follows: First, a stainless steel screening mesh roll with a width of 0.4 m - 1.8 m is cut and matched, and the cutting length is 0.4 m - 1.8 m. Usually, the cutting program is set to automatically confirm the cutting length according to the width of the stainless steel mesh roll fed into the cutting device.

[0039] After cutting, the cut screening mesh is flattened by a square (or rectangular) automatic (or manual) fixing and clamping arm to ensure uniform stress on the four sides of the mesh and avoid wrinkles and adhesions, and then it is fed into the ultrasonic cleaning device.

[0040] During ultrasonic cleaning, it is preferably a diagonal insertion type (or vertical type, horizontal type) cleaning compartment, and the ultrasonic generating device is started to clean the mesh. Generally, the width of the cleaning compartment of the ultrasonic cleaning equipment is 1.8 m, and the diagonal insertion depth is 2.5 m. 2 - 15 cut screening meshes can be cleaned simultaneously, and the cleaning time is 5 min - 30 min.

[0041] The cleaned sieve is fed into a plasma activation device. The cleaned and dried sieve is placed into the plasma activation device, and the surface of the sieve is subjected to surface modification pretreatment through a plasma spray beam, for deep cleaning, activating the substrate, enhancing coating penetration, and improving adhesion. The plasma activation device can clean sieves with a size of less than 1.8 meters. By using a conveyor belt method, the residence time and feeding time can be set according to the size of the sieve and different pore diameters. The currently set passing speed is 100 mm / min - 180 mm / min. The conveyor belt has a mesh structure, which facilitates simultaneous plasma activation of both sides of the sieve during transportation.

[0042] During the nanoatomization process, two methods of spraying and coating can be used, and it can be achieved only by replacing the nozzles of the spraying and coating systems with brush heads.

[0043] Among them, for spraying, the atomizing spray gun evenly sprays both sides of the sieve. Preferably, spraying operations are performed on single 1.3 * 1.3 m square and 1.5 * 1.5 m square 304 stainless steel woven sieves. Preferably, spraying heads are installed above and below, and the sieve on the conveyor belt is sprayed perpendicular to the advancing direction of the hollow conveyor belt on the plane. The entire spraying process is carried out in a fully enclosed environment to avoid the influence of the external environment on the working area, resulting in unstable sieve quality. For coating, the brush head directly contacts the surface of the sieve, and the fluorosilicon material specially configured for the sieve is coated to obtain a mesh sheet with a superhydrophobic coating.

[0044] After the surface of the sieve is treated by nanoatomization, the surface texture is in the form of concave and convex texture. Observed under a microscope, the surface roughness burrs of the stainless steel wire are significantly reduced, the contact surface with the material surface is smoother and flatter, and the sprayed material makes the sieve have hydrophobic properties, not easily forming "adhesion" with the material, reducing the contact area with the material, increasing the fluidity and sliding property of the material, achieving the effect of rapid screening of materials through the sieve in the screening process, and improving production capacity and benefits.

[0045] The heating and curing device generally uses an oven, with the temperature set at 210° to 232°, preferably 220° for drying. The drying and curing time is 1.6 hours to 2 hours, preferably 2 hours. After the heat preservation ends, the oven cools automatically, and the cooling time is not less than 30 min. After cooling, natural air drying is used, and after receiving the materials, they are inspected and stored in the warehouse.

[0046] The present invention provides a manufacturing method for a sieve, including steps of cutting, fixing, ultrasonic cleaning, plasma activation, spraying a coating, air drying, heating and curing, and cooling. It improves the passing rate of the sieve, enhances the strength and wear resistance of the sieve, reduces the loss of the sieve, and extends the service life of the sieve.

[0047] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered to be within the scope described in this specification.

[0048] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent of the present application shall be subject to the appended claims.

Claims

1. A method for manufacturing a screen, characterized in that: It includes the following steps: (a) Cutting; (b) fixation; (c) ultrasonic cleaning; (d) plasma activation; (e) Spray coating; (f) air drying; (g) heat curing; (h) Cooling.

2. A method for manufacturing a screen according to claim 1, characterized in that: After the ultrasonic cleaning in step (c), a drying treatment is further performed.

3. The method for manufacturing a screen according to claim 1, characterized in that: Step (h) is to cool and dry naturally, and then collect and inspect the materials and store them in a warehouse.

4. A method for manufacturing a screen according to claim 1, characterized in that: In step (a), a cutting program is set to automatically cut the stainless steel mesh roll according to the width of the stainless steel mesh roll fed into the cutting device.

5. A method for manufacturing a screen according to claim 1, characterized in that: In step (b), after cutting is completed, the cut screen is flattened by a square or rectangular automatic or manual fixed clamping arm to ensure that the four sides of the screen are evenly stressed to avoid wrinkles and adhesion, and then sent to an ultrasonic cleaning device.

6. A method for manufacturing a screen according to claim 1, characterized in that: In step (c), the ultrasonic cleaning equipment is an oblique, vertical or horizontal cleaning compartment, and the ultrasonic generating device is started to clean the screen, and the cleaning time is 5 minutes to 30 minutes.

7. A method for manufacturing a screen according to claim 1, characterized in that: In step (d), the cleaned screen is sent to a plasma activation device, and the cleaned and dried screen is placed in the plasma activation device, and the screen is pre-treated by a plasma spray beam to perform surface modification, deep cleaning, activate the substrate, enhance coating penetration, and improve adhesion.

8. A method for manufacturing a screen according to claim 1, characterized in that: In step (e), the coating is sprayed by using nano-atomization equipment in two ways: spraying and coating. The specific process includes: (I) Spraying: an atomizing spray gun is used to evenly spray the two sides of the screen. A single stainless steel woven screen is sprayed. The spray heads are set up on the upper and lower sides. The screen on the conveyor belt is sprayed on a plane perpendicular to the forward direction of the hollow conveyor belt. The entire spraying process is carried out in a fully enclosed environment to prevent the external environment from affecting the working area. (II) B coating: Use a brush head to directly contact the surface of the screen and apply the fluorosilicone material specially configured for the screen to obtain a mesh coated with a super-hydrophobic coating.

9. A method for manufacturing a screen according to claim 1, characterized in that: In step (e), the curing is carried out by heating in an oven, the temperature is set at 210° to 232°, and the drying and curing time is 1.6 hours to 2 hours.

10. The method for manufacturing a screen according to claim 1, characterized in that: In step (h), automatic cooling is adopted, and the cooling time is not less than 30 minutes.

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