Ceramic part paint spraying device and ceramic part paint spraying method

Abstract

The invention discloses a ceramic part paint spraying device and a ceramic part paint spraying method.The ceramic part paint spraying device comprises a centrifugal pre-crushing device, an ultrasonic screening device and an aerial fog paint spraying device, the centrifugal pre-crushing device is provided with a centrifugal roller, and the centrifugal roller conducts centrifugal crushing on initial paint to form separated paint; the ultrasonic screening device is connected with the centrifugal pre-crushing device, and the separated paint is screened through the ultrasonic screening device; and the aerial fog paint spraying device is connected with the ultrasonic screening device, the aerial fog paint spraying device sprays paint to the ceramic parts in the aerial fog environment through the sorted paint, and the ceramic parts can be evenly sprayed through the centrifugal pre-crushing device, the ultrasonic screening device and the aerial fog paint spraying device.

Description

Technical Field

[0001] The present application relates to the field of ceramic spraying equipment, and particularly to a ceramic part spraying device and a ceramic part spraying method. Background Art

[0002] During the manufacturing process of ceramic parts, spraying is a crucial process, which not only affects the appearance quality of the product, but also directly relates to the durability and service performance of the product. Traditional ceramic part spraying methods mostly use manual spraying or simple mechanized spraying equipment, and these methods have many deficiencies, such as low paint utilization rate, poor spraying uniformity, serious environmental pollution, and high energy consumption. Therefore, it is particularly important to develop an efficient, environmentally friendly, and energy-saving ceramic part spraying device and method.

[0003] When traditional spraying devices process the initial paint, they often lack effective pretreatment means, resulting in the inability to effectively remove large particle substances and impurities in the paint, thus affecting the spraying effect and the uniformity of the paint film. In addition, in the traditional spraying method during the spraying process, the paint is wasted seriously, and due to uneven spraying, it often requires multiple sprays to achieve the ideal spraying effect, which not only increases the production cost but also prolongs the production cycle.

[0004] In addition, during the spraying process of existing spraying devices, a large amount of volatile organic compounds (VOCs) are often generated, causing serious pollution to the environment. At the same time, due to the insufficient sealing performance and waste gas treatment capacity of the spraying equipment, the waste gas emissions exceed the standard, further exacerbating the environmental pollution problem.

[0005] In view of the above problems, the present invention proposes a new type of ceramic part spraying device and method, aiming to achieve effective pretreatment and uniform spraying of the initial paint through advanced technologies such as centrifugal pre-crushing, ultrasonic screening, and aerosol spraying, while reducing paint waste and environmental pollution, and improving spraying efficiency and product quality. Summary of the Invention

[0006] In order to solve the problems existing in the prior art, the present invention provides a ceramic part spraying device and a ceramic part spraying method. Among them, a ceramic part spraying device includes:

[0007] A centrifugal pre-crushing device provided with a centrifugal drum, and the centrifugal drum performs centrifugal crushing on the initial paint to form sorted paint

[0008] An ultrasonic screening device connected to the centrifugal pre-crushing device, and the sorted paint is screened through the ultrasonic screening device;

[0009] An aerosol spraying device connected to the ultrasonic screening device, and the aerosol spraying device sprays the sorted paint on the ceramic part in an aerosol environment.

[0010] Optionally, in some embodiments of the present application, the centrifugal pre-crushing device includes:

[0011] A driver, the output end of the driver is connected with a centrifugal drum, and the centrifugal drum rotates through the driver;

[0012] Drum blades, which are arranged in a ring-shaped spiral on the inner wall of the centrifugal drum;

[0013] A material distributor, which is arranged above the centrifugal drum, and a feed port is arranged on the centrifugal drum corresponding to the position of the material distributor. When the centrifugal drum rotates to a certain position, the material distributor is docked with the feed port.

[0014] Optionally, in some embodiments of the present application, the material distributor includes:

[0015] A plurality of storage tanks for placing the initial paint;

[0016] A meter, which is arranged at the bottom of the storage tank, the meter measures the initial paint, and one end of the meter far from the storage tank is docked with the feed port.

[0017] Optionally, in some embodiments of the present application, the ultrasonic screening device includes:

[0018] An ultrasonic atomization chamber, in which an atomization cavity is arranged;

[0019] A piezoelectric vibrating sheet, which is arranged at the bottom of the atomization cavity, and the piezoelectric vibrating sheet is connected with an alternating current power supply;

[0020] A cooling system, which is arranged in the ultrasonic atomization chamber, and the cooling system cools the ultrasonic atomization chamber.

[0021] Optionally, in some embodiments of the present application, the ultrasonic atomization chamber is provided with an inlet and an outlet, the inlet and the outlet are respectively arranged at both ends of the piezoelectric vibrating sheet, and the bottoms of the inlet and the outlet are both abutted against the top of the piezoelectric vibrating sheet;

[0022] A driving device is arranged above the inlet, the driving device is provided with a spray nozzle, the direction of the spray nozzle is from the direction of the inlet towards the direction of the outlet, and the spray nozzle blows the material located above the piezoelectric vibrating sheet, so that the material vibrated by the piezoelectric vibrating sheet is blown to the outlet.

[0023] Optionally, in some embodiments of the present application, the vibration frequency of the piezoelectric vibrating piece is 20–100 kHz, and the power density of the piezoelectric vibrating piece is 0.5–3 W / cm 2 ;

[0024] The residence time of the material on the piezoelectric vibrating piece is 10–50 ms.

[0025] Optionally, in some embodiments of the present application, the piezoelectric vibrating piece is inclined in the ultrasonic atomization chamber, and the height of the end of the piezoelectric vibrating piece close to the inlet is higher than the height of the end of the piezoelectric vibrating piece close to the outlet.

[0026] Optionally, in some embodiments of the present application, the aerosol spraying device includes an aerosol chamber, an aerosol spray head is arranged in the aerosol chamber, there are two aerosol spray heads, and the two aerosol spray heads are respectively arranged at the top position and the bottom position of the aerosol chamber, and the two aerosol spray heads are connected to an ultrasonic atomization chamber, and the material in the ultrasonic atomization chamber enters the aerosol spray head;

[0027] The aerosol spray head is set as an annular spray head, a support platform is arranged at the middle position of the annular spray head, and the support platform supports the ceramic part to be sprayed;

[0028] The annular spray head is obliquely arranged in the aerosol chamber, and the direction of the nozzle of the annular spray head faces the position between the two aerosol spray heads.

[0029] Optionally, in some embodiments of the present application, the ceramic part painting method is performed according to any one of the above-mentioned ceramic part painting devices, and the ceramic part painting method includes:

[0030] Step 1: Put various initial paints into the storage tanks of the material distributor respectively, perform metering and distribution through a meter, and put the distributed initial paints into a centrifugal drum for stirring and crushing;

[0031] Step 2: Put the stirred and crushed material into an ultrasonic screening device for ultrasonic screening, and break large-particle objects in the material into small-particle objects;

[0032] Step 3: Spray the ceramic part in the aerosol chamber through the aerosol spray head with small-particle objects.

[0033] Optionally, in some embodiments of the present application, the initial paint includes an inorganic film-forming component, an organic-inorganic hybrid resin, a reinforcing filler, an auxiliary agent and a curing agent.

[0034] Compared with the prior art, the beneficial effects in the present invention are:

[0035] 1. The initial paint is finely processed by a centrifugal pre-crushing device to effectively remove large particle impurities, ensuring the fineness and uniformity of the paint, and laying a solid foundation for subsequent spray painting operations;

[0036] 2. The introduction of an ultrasonic screening device further refines the paint particles, improves the spray painting effect, makes the paint film smoother and more uniform, and significantly improves the appearance quality and durability of the product;

[0037] 3. The aerosol spray painting device adopts a ring-shaped nozzle design, combined with double spray painting methods at the top and bottom, achieving full-range and efficient spray painting coverage, greatly shortening the spray painting cycle and improving production efficiency. Description of the Drawings

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those skilled in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0039] Figure 1 It is a schematic diagram of the overall structure of the ceramic part spray painting device provided by the embodiment of the present application;

[0040] Figure 2 It is a schematic diagram of the internal structure of the ultrasonic screening device provided by the embodiment of the present application;

[0041] Figure 3 It is a schematic diagram of the internal structure of the aerosol spray painting device provided by the embodiment of the present application;

[0042] Figure 4 It is a schematic diagram of the overall process of the ceramic part spray painting method provided by the embodiment of the present application.

[0043] Description of the Reference Numerals:

[0044] 100, centrifugal pre-crushing device; 110, centrifugal drum; 111, drum scraper; 112, feed inlet; 113, discharge outlet; 120, driver; 130, material distributor; 131, storage tank; 132, meter; 200, ultrasonic screening device; 210, ultrasonic atomization chamber; 220, piezoelectric vibration plate; 230, cooling system; 240, alternating current power supply; 250, inlet; 260, outlet; 270, driving device; 300, aerosol spray painting device; 310, aerosol chamber; 320, aerosol nozzle; 330, support platform; 340, air nozzle. Detailed Embodiments

[0045] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the protection scope of the present application. It can be understood that the accompanying drawings are only for reference and illustration, and are not used to limit the present application. The connection relationships shown in the drawings are only for clear description and do not limit the connection methods.

[0046] Specifically, as Figures 1-3 shown, in the embodiments of the present application, a ceramic part painting device is provided. This device can paint ceramic parts, facilitating the processing of ceramic parts. The painting device mainly consists of three parts, namely a centrifugal pre-crushing device 100, an ultrasonic screening device 200, and an aerosol painting device 300. Through these three parts of the structure, the ceramic parts can be painted as a whole.

[0047] Among them, in the centrifugal pre-crushing device 100, it mainly includes a driver 120 and a centrifugal drum 110. The centrifugal drum 110 is arranged at the output end of the driver 120, so that the centrifugal drum 110 rotates under the drive of the driver 120. A drum scraping blade 111 is arranged inside the centrifugal drum 110. The drum scraping blade 111 is specifically installed at the inner wall position of the centrifugal drum 110 and is arranged in a spiral shape. The drum scraping blade 111 is specifically a kind of blade in the embodiments of the present application. The setting of the blade structure is mainly to crush the initial paint in the centrifugal drum 110, facilitating the pretreatment of the initial paint.

[0048] In the above process, more specifically:

[0049] An inlet 112 and an outlet 113 are arranged on the centrifugal drum 110. Both the inlet 112 and the outlet 113 are communicated with the centrifugal drum 110. A material distributor 130 is arranged above the centrifugal drum 110. The material distributor 130 is arranged corresponding to the position of the inlet 112. In the embodiments of the present application, three material distributors 130 are provided, so that three inlets 112 are arranged on the centrifugal drum 110. The material distributor 130 mainly includes a storage tank 131 and a meter 132. As Figure 1 shown, the storage tank 131 is located above the meter 132, and the storage tank 131 is communicated with the meter 132, so that the initial paint in the storage tank 131 enters the meter 132 for measurement.

[0050] By calculating the corresponding proportional relationships of each initial paint, the meter 132 measures and distributes each initial paint, facilitating the crushing, mixing, and sorting of the paint.

[0051] In the embodiments of the present application, the initial paint mainly includes an inorganic film-forming component, an organic-inorganic hybrid resin, a reinforcing filler, an additive, and a curing agent.

[0052] In the above initial paint, more specifically, the inorganic film-forming component includes 35% - 50% of nano-silica sol (particle size 10 - 30 nm), 10% - 20% of modified zirconia sol (such as ZrO2 content 20%); the organic-inorganic hybrid resin includes 15% - 25% of epoxy-siloxane oligomer (epoxy value 0.2 - 0.4), the reinforcing filler is flaky alumina (aspect ratio > 50) 5% - 10%, silicon carbide nanowires (diameter 50 - 100 nm) 1% - 3%, the additive is a water-based dispersant (polycarboxylate) 0.5% - 1%, an antifoaming agent (such as silicone-based) 0.1% - 0.3%, a leveling agent (fluorine-modified acrylate) 0.2% - 0.5%, and the curing agent is blocked isocyanate (NCO content 12% - 15%) 3% - 8%, and the balance is deionized water.

[0053] By mixing the above initial paint in the centrifugal drum 110 according to the corresponding ratio, and the rotation speed of the centrifugal drum 110 is 5 - 10 r / s, the corresponding sorted paint can be mixed. During the mixing process, the inorganic sol and the organic resin crosslink through the Si - O - C bond to form an interpenetrating network structure, endowing the coating with high hardness (≥6H) and toughness. The flaky alumina is arranged parallel to the substrate, and the silicon carbide nanowires are interspersed among them, synergistically improving the wear resistance (Taber wear value < 30 mg / 1000 revolutions).

[0054] It can be known through testing in the sorted paint formed after mixing that the adhesion of the sorted paint is 5B (showing no peeling); the hardness is 6H; the salt spray resistance shows no blistering / rusting; the VOC content is 42 g / L.

[0055] Spraying paint on the ceramic parts with these parameters can have a very good adhesion effect.

[0056] In order to better paint the ceramic parts with the sorted paint formed after mixing, the sorted paint needs to be screened. Among them, the screening process is carried out by an ultrasonic screening device 200, such as Figure 2As shown in the figure, in the embodiment of the present application, the ultrasonic screening device 200 mainly includes an ultrasonic atomization chamber 210. An atomization cavity is provided in the ultrasonic atomization chamber 210. A piezoelectric vibration plate 220 is arranged at the bottom of the atomization cavity. The piezoelectric vibration plate 220 is connected to an alternating current power supply 240. The piezoelectric vibration plate 220 is vibrated by the action of the alternating current power supply 240. At both ends of the piezoelectric vibration plate 220, an inlet 250 and an outlet 260 are arranged at the position of the ultrasonic atomization chamber 210. The bottom positions of the inlet 250 and the outlet 260 are both abutted against the top position of the piezoelectric vibration plate 220, so that the sorting paint can move above the piezoelectric vibration plate 220 through the inlet 250. Among them, the inlet 250 of the ultrasonic atomization chamber 210 is communicated with the discharge port 113 of the centrifugal drum 110, which facilitates the sorted paint after being processed by the centrifugal drum 110 to enter the ultrasonic atomization chamber 210.

[0057] When the sorting paint is in the ultrasonic atomization chamber 210, the alternating current power supply 240 supplies power to the piezoelectric vibration plate 220, and the piezoelectric vibration plate 220 vibrates through the inverse piezoelectric effect. The piezoelectric vibration plate 220 is usually made of lead zirconate titanate (PZT) material, and the power density is 0.5–3W / cm 2 , the vibration frequency of the piezoelectric vibration plate 220 is 20–100kHz, and the vibration frequency is preferably 80–100kHz in the present application. At this frequency, the sorting paint spreads into a layer on the piezoelectric vibration plate 220. When the ultrasonic wave generated by the piezoelectric vibration plate 220 propagates in the liquid, the alternating change of the density of the sound wave will generate a negative pressure area locally in the liquid. When the negative pressure exceeds the tensile strength of the liquid, tiny bubbles (cavitation bubbles) will be formed inside the liquid. In the subsequent positive pressure stage, the cavitation bubbles will collapse rapidly, instantaneously generating a local high temperature (above 5000K) and high pressure (above 100MPa), forming strong microjets and shock waves. These microjets and shock waves act on the paint droplets, overcoming the surface tension and viscous force of the liquid, and tearing the droplets into smaller particles (usually 10–30μm).

[0058] The residence time of the above-mentioned sorting paint on the piezoelectric vibration plate 220 is 10–50ms. To achieve this process, a driving device 270 is arranged in the ultrasonic atomization chamber 210. In the present application, the driving device 270 is a blowing device. The blowing device is provided with a nozzle, and the direction of the nozzle is from the direction of the inlet 250 to the direction of the outlet 260. The nozzle blows the material located above the piezoelectric vibration plate 220, so that the material vibrated by the piezoelectric vibration plate 220 is blown to the outlet 260.

[0059] Meanwhile, to facilitate the better movement of the sorted paint on the piezoelectric vibrating piece 220 to the outlet 260, in the embodiment of the present application, the piezoelectric vibrating piece 220 is inclined in the ultrasonic atomization chamber 210. Specifically, the height of the end of the piezoelectric vibrating piece 220 close to the inlet 250 is higher than the height of the end of the piezoelectric vibrating piece 220 close to the outlet 260.

[0060] Meanwhile, a cooling system 230 is also provided in the ultrasonic atomization chamber 210. Since a high temperature above 5000K will be generated during the processing of the piezoelectric vibrating piece 220, this temperature will have a certain impact on the structure of the ultrasonic atomization chamber 210. By cooling the entire ultrasonic atomization chamber 210 through the cooling system 230, the continuous operation of the piezoelectric vibrating piece 220 can be maintained.

[0061] The sorted paint enters the aerosol spraying device 300 after being processed by the ultrasonic atomization chamber 210. In the embodiment of the present application, as Figure 3 shown, the aerosol spraying device 300 mainly includes an aerosol chamber 310. An aerosol nozzle 320 is provided in the aerosol chamber 310. There are two aerosol nozzles 320 in the aerosol chamber 310. The two aerosol nozzles 320 are respectively arranged at the top position and the bottom position of the aerosol chamber 310, and both aerosol nozzles 320 are connected to the ultrasonic atomization chamber 210, facilitating the spraying of the sorted paint processed by the ultrasonic atomization chamber 210 through the aerosol nozzles 320.

[0062] Among them, in the above structure, both aerosol nozzles 320 are arranged in a ring shape, and the radii of the two ring structures are equal.

[0063] Moreover, on the aerosol nozzle 320 at the bottom position, a support platform 330 is provided in the middle position, and this support platform 330 is used to support the ceramic part to be painted.

[0064] In order to better paint the ceramic part, in the embodiment of the present application, both aerosol nozzles 320 are obliquely arranged, and the direction of the nozzle of the ring-shaped nozzle faces the position between the two aerosol nozzles 320. The inclination angle is set to be about 30 degrees relative to the vertical line. At this inclination angle, the sorted paint sprayed by the aerosol nozzles 320 can spray all angles of the ceramic part, avoiding omission of some positions. At the same time, to better spray the ceramic part, an air nozzle 340 is provided on one side of the aerosol nozzle. The air nozzle 340 is also arranged in a ring shape, and the ring radius of the air nozzle 340 is larger than the ring radius of the aerosol nozzle 320, so that when the sorted paint sprays the ceramic part, the air flow sprayed by the air nozzle 340 will drive the sorted paint to rotate, avoiding the dispersion of the sorted paint in the aerosol chamber 310.

[0065] In summary, based on the above structure, an embodiment of the present application provides a method for spraying paint on a ceramic part, and the method for spraying paint on the ceramic part includes:

[0066] Step 1: Put various initial paints into the storage tank 131 of the material distributor 130 respectively, and perform metering and distribution through the meter 132, and put the distributed initial paints into the centrifugal drum 110 for stirring and crushing;

[0067] Step 2: Put the stirred and crushed material into the ultrasonic screening device 200 for ultrasonic screening, and break the large-particle objects in the material into small-particle objects;

[0068] Step 3: Spray paint on the ceramic part in the aerosol chamber 310 through the aerosol nozzle 320 with the small-particle objects.

[0069] The above embodiments are only used to illustrate the technical method of the present invention and not to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical method of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical method of the present invention.

Claims

1. A ceramic part spraying device, characterized in that, Comprising: A centrifugal pre-crushing device, provided with a centrifugal drum, which centrifugally crushes the initial paint to form sorted paint; An ultrasonic screening device, connected to the centrifugal pre-crushing device, and the sorted paint is screened by the ultrasonic screening device; An aerosol spraying device, connected to the ultrasonic screening device, and the aerosol spraying device sprays the sorted paint on the ceramic part in an aerosol environment.

2. The spray painting device for ceramic parts according to claim 1, wherein, The centrifugal pre-crushing device includes: A driver, the output end of the driver is connected to the centrifugal drum, and the centrifugal drum rotates through the driver; A drum scraper, annularly and spirally arranged on the inner wall of the centrifugal drum; A material distributor, arranged above the centrifugal drum, and a feed port is arranged on the centrifugal drum corresponding to the position of the material distributor. When the centrifugal drum rotates to a certain position, the material distributor is docked with the feed port.

3. A ceramic part painting device according to claim 2, wherein The material distributor includes: A plurality of storage tanks for placing the initial paint; A meter, arranged at the bottom of the storage tank, which measures the initial paint, and one end of the meter far from the storage tank is docked with the feed port.

4. A ceramic part painting device according to claim 1, characterized in that, The ultrasonic screening device includes: An ultrasonic atomization chamber, in which an atomization cavity is arranged; A piezoelectric vibration piece, arranged at the bottom of the atomization cavity, and the piezoelectric vibration piece is connected to an alternating current power supply; A cooling system, arranged in the ultrasonic atomization chamber, and the cooling system cools the ultrasonic atomization chamber.

5. A ceramic part painting device according to claim 4, characterized in that, The ultrasonic atomization chamber is provided with an inlet and an outlet, which are respectively arranged at both ends of the piezoelectric vibration piece, and the bottoms of the inlet and the outlet are both abutted against the top of the piezoelectric vibration piece; A driving device is arranged above the inlet, the driving device is provided with a spray nozzle, the direction of the spray nozzle is from the direction of the inlet towards the direction of the outlet, and the spray nozzle blows the material located above the piezoelectric vibration piece, so that the material vibrated by the piezoelectric vibration piece is blown to the outlet.

6. The ceramic part painting device according to claim 5, characterized in that, The vibration frequency of the piezoelectric vibrating piece is 20–100 kHz, and the power density of the piezoelectric vibrating piece is 0.5–3 W / cm 2 ; The residence time of the material on the piezoelectric vibration piece is 10–50 ms.

7. A ceramic part painting device according to claim 6, characterized in that, The piezoelectric vibration piece is obliquely arranged in the ultrasonic atomization chamber, and the height of the end of the piezoelectric vibration piece close to the inlet is higher than the height of the end of the piezoelectric vibration piece close to the outlet.

8. A ceramic part painting device according to claim 1, characterized in that, The aerosol spraying device includes an aerosol chamber, in which aerosol spray nozzles are arranged. There are two aerosol spray nozzles, which are respectively arranged at the top and bottom positions of the aerosol chamber, and the two aerosol spray nozzles are connected to the ultrasonic atomization chamber, and the material in the ultrasonic atomization chamber enters the aerosol spray nozzles; The aerosol spray nozzle is set as an annular spray nozzle, and a support platform is arranged in the middle of the annular spray nozzle to support the ceramic part to be sprayed; The annular spray nozzle is obliquely arranged in the aerosol chamber, and the direction of the nozzle of the annular spray nozzle faces the position between the two aerosol spray nozzles.

9. A method for spraying paint on a ceramic part, which is carried out according to a ceramic part spraying device as described in any one of claims 1-8, characterized in that, The method for spraying the ceramic part includes: Step 1: Put various initial paints into the storage tanks of the material distributor respectively, measure and distribute them through a meter, and put the distributed initial paints into a centrifugal drum for stirring and crushing; Step 2: Put the stirred and crushed materials into an ultrasonic screening device for ultrasonic screening to break large particle objects in the materials into small particle objects; Step 3: Spray paint the ceramic parts in the aerosol chamber with the small particle objects through an aerosol nozzle.

10. A method for spraying paint on a ceramic part according to claim 9, characterized in that, The initial paint includes an inorganic film-forming component, an organic-inorganic hybrid resin, a reinforcing filler, an auxiliary agent and a curing agent.

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