CN117363202A

CN117363202A - Preparation method and device of dual-curing UV piano black paint

Info

Publication number: CN117363202A
Application number: CN202311407297.9A
Authority: CN
Inventors: 徐宪
Original assignee: Zhejiang Shenglibang Paint Co ltd
Current assignee: Zhejiang Shenglibang Paint Co ltd
Priority date: 2023-10-27
Filing date: 2023-10-27
Publication date: 2024-01-09
Anticipated expiration: 2043-10-27
Also published as: CN117363202B

Abstract

The application discloses a preparation method and a preparation device of a colored dual-cured UV piano black coating, comprising the following steps: step one, preparing various raw materials, and uniformly mixing tetrafunctional polyurethane acrylic resin, trifunctional aliphatic polyurethane acrylic resin, hydroxyl acrylic resin, high-TG-point thermoplastic acrylic resin and TMPTA monomer under a light-shielding condition to obtain a mixture A; stirring part of butyl acetate, adding an ultraviolet initiator under the stirring condition, and uniformly stirring to obtain a mixture B; step three, adding the mixture B into the mixture A under the stirring condition, adding the flatting agent, and stirring for 10-20min to obtain a mixture C; step four, adding the black paste into the mixture C under the stirring condition, and uniformly stirring for 10-20min; obtaining a mixture D; and fifthly, adding ethyl acetate and the rest DBE into the mixture D under the stirring condition, uniformly stirring, adjusting the viscosity to 20-30S under the condition of NK-2 at the temperature of 25 ℃, and filtering to obtain the product.

Description

Preparation method and device of dual-curing UV piano black paint

Technical Field

The application relates to the technical field of paint preparation, in particular to a preparation method and a preparation device of a dual-curing UV piano black paint.

Background

The existing high gloss black system is UV single cured, has poor recoating, and has to be repaired and covered with UV again to adhere. Based on the above, as disclosed in publication number CN105315735a, a photo-thermal dual-cured hydrophilic anti-fog coating composition is disclosed, which is applied to the surface of a plastic substrate, and after heat curing, the composition is photo-cured, so that the composition has excellent continuous anti-fog property and wear resistance, and meanwhile, has good adhesion to the plastic substrate, and can be widely applied to anti-fog window films, automobile anti-fog front lamps, bathroom mirrors and the like, and has good application prospects.

In addition, as disclosed in the publication No. CN109280477A, the preparation method of the colored dual-curing UV coating overcomes the defects of the prior art that the automotive interior trim needs to be sprayed twice and the production efficiency is low, the coating has good adhesive force to ABS, PC, ABS +PC and painted plastic base materials, and the formed paint film has the performances of solvent resistance, water resistance and the like, can improve the current secondary spraying effect, saves energy and improves the production efficiency.

The application of automotive piano black paint to plastic/metal substrates has various advantages, but in the above technical applications, there are still many problems to be solved. The following aspects can be mainly summarized: (1) if the environment of the product line is poor, particles are easy to appear. (2) the deep curing can be realized by baking for 2-4 times before the test is performed. For the 1 st point, the production line environment can be improved, for the 2 nd point, no better solution exists at present, and how to do not need to bake before doing the test is the problem mainly solved by the application.

Secondly, the traditional paint stirring method comprises the following steps: the liquid material and the powder material are weighed according to the product proportion, the liquid material is poured into a barrel, water is poured into the barrel according to the proportion required to be added with water, then the powder material is poured into the barrel, and stirring is carried out while pouring.

The traditional agitator needs to be equipped with the puddler of suitable size and is used for stirring, and the diameter of agitator is bigger the greater also needs the stirring diameter of puddler, simultaneously, the position of pouring the powder also needs to follow the diameter of agitator bigger and be close to the agitator edge more, just can guarantee the high efficiency of stirring.

In order to prevent bubbles from occurring during stirring, air blowing is usually performed at the stirring position of the stirring rod, and the air blowing position is matched with the stirring position of the stirring rod so as to more effectively prevent bubbles from occurring.

Disclosure of Invention

Based on the above, the application provides a preparation method of the dual-curing UV piano black coating.

The technical scheme adopted by the application is as follows: a preparation method of a colored dual-cured UV piano black paint comprises the following steps:

step one, preparing various raw materials, and uniformly mixing tetrafunctional polyurethane acrylic resin, trifunctional aliphatic polyurethane acrylic resin, hydroxyl acrylic resin, high-TG-point thermoplastic acrylic resin and TMPTA monomer under a light-shielding condition to obtain a mixture A;

stirring part of butyl acetate, adding an ultraviolet initiator under the stirring condition, and uniformly stirring to obtain a mixture B;

step three, adding the mixture B into the mixture A under the stirring condition, adding the flatting agent, and stirring for 10-20min to obtain a mixture C;

step four, adding the black paste into the mixture C under the stirring condition, and uniformly stirring for 10-20min; obtaining a mixture D;

step five, adding ethyl acetate and the rest DBE into the mixture D under the stirring condition, uniformly stirring, adjusting the viscosity to 20-30S under the condition of NK-2 at the temperature of 25 ℃, and filtering to obtain the compound D;

wherein the raw materials comprise the following components in parts by weight: 35-40 parts of tetra-functional hydroxyl polyurethane acrylic resin; 10-15 parts of trifunctional aliphatic polyurethane acrylic resin; 8-10 parts of high TG point thermoplastic acrylic resin; 5-6 parts of hydroxy acrylic resin; 7-10 parts of TMPTA monomer; 3-4 parts of ultraviolet initiator; 0.5-1 part of leveling agent; 3-5 parts of black paste; 5-20 parts of ethyl acetate; 10-20 parts of MIBK; 6-15 parts of DBE.

In one embodiment, further, the parts by weight of MIBK added in step two are the same as the parts by weight of DBE added in step five.

In one embodiment, further, the stirring conditions in step one are 600-800 revolutions per minute; the stirring conditions in the rest steps are 300-700 rpm.

In one embodiment, further, the tetra-functional hydroxy urethane acrylic resin is a urethane acrylic oligomer containing hydroxyl groups; the TMPTA monomer is a trifunctional acrylic acid oligomer; the black paste is high pigment carbon black ground paste. Wherein the weight content of carbon black is not more than 10%.

In one embodiment, further, the tetra-functional hydroxy polyurethane acrylic resin comprises the following raw materials in parts by weight: 8-15 parts of trifunctional aliphatic polyurethane acrylic resin A; 8-15 parts of high TG point thermoplastic acrylic resin B. Wherein the trifunctional aliphatic polyurethane acrylic resin A is selected from model 6008 of American Koning Co., ltd, and the high TG point thermoplastic acrylic resin B is selected from model LF-1115 of Shaduo Maguangzhou chemical Co., ltd.

In one embodiment, further, the ultraviolet initiator comprises the following raw materials in parts by mass: 184,1-2 parts of ultraviolet initiator; 1-2 parts of ultraviolet initiator TPO; 907,1-2 parts of ultraviolet initiator.

In one embodiment, further, the leveling agent is a TEGO 2100-type leveling agent.

The colored dual-cured UV piano black coating prepared by the method is characterized in that before spraying construction, paint liquid is fully stirred uniformly, diluted to the construction viscosity by a matched diluent and filtered by a 400-mesh filter screen.

The utility model provides a device of dual solidification UV piano black coating, including puddler, agitator, play powder device, water injection pipeline, puddler one side is provided with the device of pouring powder, the device of pouring powder with play powder device connects, still includes, thrust unit for with the agitator promotes to the puddler below; the power device is used for controlling the pushing device to work and the stirring barrel and the stirring rod to rotate; the reversing device is arranged in the power device and is used for controlling the stirring barrel and the stirring rod to reversely rotate; the blowing device is connected with the pushing device and continuously blows air into the stirring barrel; the detection device is used for detecting the diameter of the stirring barrel and is connected with the driving device; the driving device is used for driving the powder pouring device to move, changing the caliber of a powder outlet, changing the stirring diameter of the stirring rod and changing the blowing position of the blowing device according to the detection quantity of the detection device; and the translation device is used for controlling the synchronous movement of the stirring rod, the powder pouring device, the air blowing device and the water injection pipeline.

In the above technical scheme, further, the power device comprises a motor, a first driving wheel is arranged on a motor rod of the motor, the stirring barrel is located on a rotating disc, a second driving wheel is arranged below the rotating disc, the second driving wheel is connected to the rotating disc through a driving rod, a magnetic coupler is arranged on the driving rod, the first driving wheel and the second driving wheel are connected through a first belt, a third driving wheel is further arranged on the driving rod, the magnetic coupler is arranged between the second driving wheel and the third driving wheel, the third driving wheel is connected with a fourth driving wheel through a second belt, the fourth driving wheel is used for driving the reversing device to work, the reversing device comprises a first bevel gear, a second bevel gear symmetrical to the first bevel gear, a third bevel gear is meshed between the first bevel gear and the second bevel gear, a fixing seat is arranged above the second bevel gear, a fifth driving wheel is arranged right above the second bevel gear in a rotating mode, the fifth driving wheel is connected with the sixth driving wheel through a third belt, and the reversing device is arranged on the stirring barrel.

In one embodiment, further, the pushing device comprises a first U-shaped frame, the motor rod penetrates through the opening end of the first U-shaped frame, an eccentric wheel set is arranged on the motor rod in the opening of the first U-shaped frame, the eccentric wheel set comprises a first eccentric wheel and a second eccentric wheel meshed with the first eccentric wheel, a second U-shaped frame is arranged on the second eccentric wheel, the opening end of the second U-shaped frame is rotatably arranged on the upper end face and the lower end face of the second eccentric wheel, a rotation fulcrum is located at the edge of the second eccentric wheel, a push rod is arranged on the outer side of the U-shaped end of the second U-shaped frame, and the push rod penetrates through the U-shaped end of the first U-shaped frame.

In one embodiment, further, the translation device comprises a telescopic cylinder arranged on the fixing seat, a fixing plate is arranged on one side of the rotating disc, an induction device is arranged on the fixing plate, a corresponding induction device is arranged on the fixing seat, the push rod pushes the stirring barrel to the rotating disc, the induction device is used for controlling the telescopic cylinder and the magnetic coupler to start, the telescopic cylinder controls the fixing seat to move downwards, and the magnetic coupler controls the second driving wheel to drive the third driving wheel to synchronously rotate.

In one embodiment, further, the detection device comprises a detection block, the detection block is provided with a bevel edge, one side of the detection block is provided with a first air bin, a plurality of groups of first piston rods are arranged on the detection block, the end parts of the first piston rods are arranged in the first air bin, the end parts of the first piston rods are provided with first pistons arranged in the first air bin, a first spring is arranged outside the first piston rods, and two ends of the first spring are connected to the first air bin and the detection block.

In an embodiment, further, the driving device includes a second air bin disposed in the fixing seat, the first air bin is connected to the second air bin through a first air pipe, a through groove is disposed on the fixing seat, a powder-pouring device is disposed in the through groove, a first shielding plate is disposed at a lower opening of the powder-pouring device, a rotatable second shielding plate is further disposed in the through groove, a gear is disposed on an outer ring of the second shielding plate, a rack is disposed below the fixing seat and on one side of the powder-pouring device, the rack is engaged with the gear, the second shielding plate can rotate on the powder-pouring device when the powder-pouring device moves, and further, the stirring rod is composed of a main rod and an auxiliary rod, the lower end of the main rod is movably disposed in the cross pipe, the main rod is communicated with the cross pipe and is disposed in the cross pipe, the second air bin is connected to the inside of the fixing seat through a second air pipe, the device includes a first connecting rod, a second connecting rod is disposed on one side of the air bin, a second piston is disposed on the second air bin, a third connecting rod is disposed on the second piston bin, a second piston is disposed on the second piston is inserted into the second air bin, a third piston is disposed on the second piston, a second piston is connected to the piston, the fourth air bin is connected with the second air bin through a third air pipe, and the ventilation plate enables the common through hole position formed by the first kidney-shaped through hole and the second kidney-shaped through hole to move after moving.

The beneficial effects of this application lie in: the metal/plastic is used as a substrate for paint film performance comparison so as to select the best preparation raw materials and components thereof. The application improves the twice spraying mode of current conventional black primer and UV paint to the energy saving improves production efficiency, and the paint film that the coating of this application formed can realize complete solidification cross-linking, and the solvent is no remaining and is not back-sticking, and the dispersibility is good during the spraying, and the leveling is moderate, and thixotropic property is moderate, makes the coating even, does not have obvious orange peel, no needle eye bubble, no impurity point existence, and the paint surface leveling is plump, and glossiness is good, satisfies production demand standard. Meanwhile, the crosslinking density of the cured coating is greatly higher than that of a hot-baking type coating, the coating has high performance indexes in all aspects of hardness, wear resistance, acid and alkali resistance, salt spray resistance, gasoline resistance and other organic solvents, and particularly, the coating film is plump, glossy, smooth on the surface, the curing speed of the UV paint is high, and the production efficiency is high.

On the other hand, the device that this application provided can be according to the puddler length on the diameter adaptive adjustment puddler of agitator to increase the stirring diameter, can also adaptively adjust the pouring position of pouring powder device, the position of blowing device position, water injection device's water injection rate simultaneously.

Drawings

The present application is further described below with reference to the drawings and examples.

FIG. 1 is a schematic flow chart of a method for preparing a dual-cure UV piano black coating of the present application;

fig. 2 is a flow chart of a method of using the dual cure UV piano black paint of the present application.

Fig. 3 is a first angular perspective view of a preparation apparatus of the dual-cure UV piano black paint of the present application.

Fig. 4 is a second angular perspective view of the manufacturing apparatus of the present invention.

FIG. 5 is a third angular perspective view of the production apparatus of the present invention.

Fig. 6 is a structural view of the detecting device of the present invention.

Fig. 7 is an initial state matching diagram of the driving device and the powder pouring device of the invention.

Fig. 8 is a diagram showing the adjustment state of the driving device and the powder pouring device according to the present invention.

Fig. 9 is a perspective view of the powder pouring device of the present invention.

Fig. 10 is an initial state cooperation diagram of the driving device and the blowing device of the present invention.

Fig. 11 is a view showing the adjustment state of the driving device and the blower device according to the present invention.

Fig. 12 is a structural view of a stirring rod according to the present invention.

In the figure, 1, a stirring rod, 101, a main rod, 102, a secondary rod, 103, a cross pipe, 2, a stirring barrel, 3, a powder discharging device, 4, a water injection pipeline, 5, a motor, 6, a motor rod, 7, a first driving wheel, 8, a rotating disc, 9, a second driving wheel, 10, a driving rod, 11, a magnetic coupler, 12, a first belt, 13, a third driving wheel, 14, a second belt, 15, a fourth driving wheel, 16, a first bevel gear, 17, a second bevel gear, 18, a third bevel gear, 19, a fixing seat, 20, a fifth driving wheel, 21, a third belt, 22, a sixth driving wheel, 23, a first U-shaped frame, 24, a first eccentric wheel, 25, a second eccentric wheel, 26, a second U-shaped frame, 27, push rod, 28, telescopic cylinder, 29, fixed plate, 30, induction device, 31, detection block, 32, bevel edge, 33, first air chamber, 34, first piston rod, 35, first piston, 36, first spring, 37, second air chamber, 38, first air pipe, 39, through groove, 40, powder pouring device, 41, first shielding plate, 42, second shutter, 43, gear, 44, rack, 45, second air tube, 46, first connecting rod, 47, second connecting rod, 48, third air chamber, 49, second piston, 50, air valve, 51, first kidney-shaped through hole, 52, fourth air chamber, 53, air plate, 54, second kidney-shaped through hole, 55, third air tube.

Detailed Description

Example 1

As shown in fig. 1 and 2, the preparation method of the dual-curing UV piano black paint of the present embodiment, wherein the raw materials required by the paint include the following components in parts by weight:

wherein the ultraviolet light initiator comprises 1 weight part of ultraviolet light initiator A, 1.5 weight parts of ultraviolet light initiator B and 1 weight part of ultraviolet light initiator C;

in the embodiment, the high TG point thermoplastic acrylic resin, the trifunctional aliphatic polyurethane acrylic resin and the hydroxy acrylic resin are aliphatic polyurethane acrylate oligomer; the tetra-functional hydroxyl polyurethane acrylic resin is polyurethane acrylic oligomer containing hydroxyl; the TMPTA monomer is a trifunctional acrylic oligomer.

In this embodiment, the tetra-functional hydroxy polyurethane acrylic resin may be selected from the model L-8464 product of blue Ke Lu chemical Co., ltd, the hydroxy acrylic resin may be selected from the model 1215BA68 product of Neppes chemical Co., ltd, the high TG point thermoplastic acrylic resin may be used to enhance adhesion to and flexibility of the substrate, the tri-functional aliphatic polyurethane acrylic resin may be selected from the model 6008 product of American Koning chemical Co., ltd, and the TMPTA monomer may be selected from the model EM231 product of Changxing Material industries Co., ltd.

The leveling agent in this example is TEGO2100 leveling agent; TEGO2100 is an acrylic modified silicone leveling agent, which allows the overall system to be flatter, smoother, and also repairable. The black paste is a high pigment carbon black ground paste, wherein the content (weight) of the carbon black is 10%, the content of the carbon black can influence the curing degree of the paint, and the embodiment adopts the black paste with low carbon black content, so that the paint is easier to cure and has better performance.

In this example, the UV initiator A was BASF IRGACURE 184 photoinitiator, the UV initiator B was BASF IRGACURE TPO photoinitiator, and the UV initiator C was BASF IRGACURE 907 photoinitiator. The BASF IRGACURE 907 photoinitiator is a free radical solid photoinitiator and is mainly used for UV curing of unsaturated prepolymer (such as acrylate) together with mono-or polyfunctional vinyl monomers and oligomers, and is particularly suitable for a colored UV curing system. In the embodiment, three photoinitiators are combined, and ultraviolet rays in different wave bands in an ultraviolet region can be absorbed, so that the UV coating is cured more thoroughly, and better surface performance is provided for a paint film. In the embodiment, different ultraviolet light initiators are adopted to match for curing the colored paint film, and double curing resin (UV resin with hydroxyl) and single curing UV resin (UV resin without hydroxyl) are adopted to match for curing the colored paint film, so that the product achieves better performance, specifically, in the embodiment, the ultraviolet light is easy to irradiate places, the ultraviolet light initiator initiates polymerization and dual reactions of the curing agent and the hydroxyl resin, and the performance of a large plane is ensured; and in places where ultraviolet light is not easy to irradiate, the polymerization caused by the photoinitiator can be reduced effectively through the reaction of the curing agent and the hydroxyl of the dual-cured resin, and the dryness of the places is ensured, so that the product achieves better performance.

The weight parts of the tetra-functional hydroxy polyurethane acrylic resin in the embodiment are larger than that of the hydroxy acrylic resin; and the weight ratio of the thermoplastic acrylic resin with high TG point to the trifunctional aliphatic polyurethane acrylic resin is 1:1-1.5, preferably 1:1.5.

In the embodiment, the tetra-functional hydroxyl polyurethane acrylic resin is used for providing the adhesive force and the surface leveling property of a matrix, the hydroxyl acrylic resin provides the flexibility of a paint film, the high TG acrylic resin provides the paint film hanging property and the paint film hardness, the black paste gives the paint film color effect, the ultraviolet initiator is used for initiating the polymerization of monomers and polyester, the leveling agent provides the leveling property of the paint film, and the ethyl acetate and the DBE are solvents, so that the paint has better fluidity and solvent release property; the good stable curing effect of the paint is realized through the good cooperation of the components, the one-coating color adding is ensured, and the traditional two-time spraying process is improved.

The coating of this example was prepared as follows:

preparing various raw materials, uniformly mixing tetrafunctional polyurethane acrylic resin, hydroxy acrylic resin, trifunctional aliphatic polyurethane acrylic resin, high-TG-point thermoplastic acrylic resin and TMPTA monomer according to the formula proportion under the light-shielding condition, and stirring for 10-20min under the stirring condition of 600-800 rpm to obtain a mixture A, wherein the stirring condition in the embodiment is 600 rpm; stirring for 10min;

Step two, stirring 5 to 10 parts by weight (specifically 9.5 parts by weight in the embodiment, namely half of the MIBK in the formula) of MIBK, adding 3 to 9 parts by weight (specifically 3.5 parts by weight in the embodiment) of ultraviolet initiator under the stirring condition of 300 to 700 revolutions per minute, and uniformly stirring for 10 to 20 minutes to obtain a mixture B; in particular, in this example, the stirring conditions were 300 rpm to prevent the low viscosity initiator from being knocked off; stirring for 15min; wherein the first step and the second step have no sequence requirement;

step three, adding the mixture B into the mixture A under the stirring condition of 300-700 rpm, adding 0.5-1 parts by weight (in the embodiment, 0.5 parts by weight) of flatting agent, and stirring for 10-20min to obtain a mixture C; in particular, in this example, the stirring conditions were 300 rpm; stirring for 15min;

step four, adding 3-5 parts by weight (specifically 3 parts by weight in the embodiment) of black paste into the mixture C under the stirring condition of 300-700 rpm, and uniformly stirring for 10-20min; obtaining a mixture D; in particular, in this example, the stirring conditions were 300 rpm; stirring for 15min;

step five, adding 5-20 parts by weight (particularly 5 parts by weight in the embodiment) of ethyl acetate and 5-10 parts by weight of MIBK (particularly 9.5 parts by weight in the embodiment, namely the rest part by weight of DBE in the formula) into the mixture D under the stirring condition of 300-700 revolutions per minute, uniformly stirring and adjusting the viscosity to 20-30S (25 ℃ C., NK-2), and filtering by a 400-500 mesh filter screen to obtain the material D, wherein the stirring condition is 300 revolutions per minute in the embodiment; the sieve was 400 mesh and the weight parts of MIBK added in step two were the same as the weight parts of DBE added in step five.

The preparation of the embodiment is carried out under the light-shielding condition, so that the action efficiency of the ultraviolet light absorber can be fully improved, and the influence of curing and crosslinking of a preparation system in a semi-finished product state on the quality of the UV coating and the film forming performance of a paint film caused by ultraviolet light absorption in the preparation process of the coating can be prevented; the ultraviolet initiator must be added into the reaction system after being dissolved by MIBK to ensure that the ultraviolet initiator is uniformly dispersed in the system.

The conventional painting operation of the automotive interior trim part in industry is to brush a layer of black primer and then add a layer of high-gloss finish paint, so that the effect of the high-gloss black paint is presented, the embodiment only needs one layer of high-gloss black paint, the conventional process means is difficult to overcome the problems of poor black UV curing degree and unstable performance, the colored dual-curing UV paint film of the automotive interior trim part is formed by adopting the paint of the embodiment, the advantages of UV and the dual-component PU are integrated, the purpose of special shape painting of the automotive interior trim part is achieved, the product performance and appearance decoration are greatly improved, the one-coating and adding effect of the UV paint of the embodiment is improved, the two-time spraying mode of the conventional black primer and the UV paint at present is improved, so that the production efficiency is improved, the paint film formed by the paint coating of the embodiment can realize complete curing and crosslinking, the solvent has no residue and no back adhesion, the dispersibility is good, the thixotropic property is moderate, the coating is uniform, no obvious orange peel, no needle bubbles and no impurity points exist, the leveling and plump luster of the paint surface meets the production requirement standard, and the gloss is good; according to the embodiment, the dual-curing resin is effectively utilized to improve the curing effect of the paint film, and ultraviolet initiators with different wavelengths are utilized to respectively initiate the curing of the surface layer, the middle layer and the bottom layer of the paint film, so that the curing effect of the paint film is greatly improved, and one-coat coloring can be realized.

The paint prepared by the formula and the method of the embodiment and a paint film thereof have good water resistance, and the cooperative use of the ethyl acetate and the DBE ensures the solubility of all raw materials and improves the drying property of construction.

The cross-linking density of the cured UV coating is greatly higher than that of a hot-baking type coating, the coating has high performance indexes in various aspects of hardness, wear resistance, boiling resistance, acid and alkali resistance, salt spray resistance, gasoline resistance and other organic solvents, particularly, the coating film is plump, gloss, surface smoothness and UV paint curing speed are high, the production efficiency is high, the curing mechanism belongs to a free radical chain reaction, the cross-linking curing is finished instantaneously, and the energy is saved.

The VW TL226 of the public in the market at present is the most strict standard in the automotive interior industry, most automotive interior manufacturers equally adopt the standard of VW TL226 to detect the performance of paint, and the colored dual-curing UV coating of the automotive interior provided by the embodiment can completely meet the requirement of the standard of VW TL226 through a plurality of performance tests, and the dual-curing UV system is also adopted by the same as that of our small-knife electric vehicle.

The method for preparing the colored dual-cured UV coating piano black in the embodiment comprises the following steps:

S1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 10:1.5:1-2, spraying the mixture on a substrate or a primer layer, leveling and drying the mixture at normal temperature for 5-6min, and then keeping the mixture in an environment of 60-80 ℃ for 5-6min; specifically, in the embodiment, the weight ratio of the UV coating to the UV coating curing agent to the UV coating diluent is 10:1.5:1-2, and the UV coating is subjected to leveling and drying at normal temperature for 5 minutes and is kept at 60 ℃ for 5-6 minutes;

s2, performing UV curing, wherein the UV exposure energy is 600-800MJ/cm < 2 >, and particularly in the embodiment, the UV exposure energy is 700MJ/cm < 2 >.

The UV paint thinner in the embodiment comprises the following raw materials in parts by weight: 50-60 parts of ethyl acetate; 40-45 parts of MIBK; the preparation method comprises the following steps: mixing 40-45 parts by weight of MIBK and 50-60 parts by weight of ethyl acetate, and uniformly stirring for 10-20 minutes; specifically, in this example, the UV paint thinner comprised 55 parts of ethyl acetate and 45 parts of MIBK, and was mixed and stirred for 10 minutes during the preparation.

The UV paint curing agent in the embodiment comprises the following raw materials in parts by weight: desmodur N75-78 parts of Kogyo Polymer (China); 22-28 parts of butyl acetate;

the preparation method comprises the following steps: mixing 22-28 parts by weight of butyl acetate and 72-78 parts by weight of Desmodur N75 of the Kogyo polymer (China) Co., ltd, and stirring uniformly for 10-20 minutes; specifically in this example the UV coating curing agent comprises Desmodur N75 parts 72; 22 parts of butyl acetate, and are uniformly mixed and stirred for 10 minutes during preparation.

The embodiment can be suitable for beautifying and protecting the ABS, PC or ABS+PC base material, and endowing the piano black and highlight effect on the surface of a paint film.

Example two

The preparation method of the colored dual-cured UV piano black paint in the embodiment is basically the same as that in the embodiment 1, except that the paint in the embodiment comprises the following raw materials in parts by weight:

wherein the ultraviolet light initiator comprises 1 weight part of ultraviolet light initiator A, 2 weight parts of ultraviolet light initiator B and 2 weight parts of ultraviolet light initiator C;

the paint preparation method of this example is basically the same as that of the first example, except that the stirring condition in the first example is 800 rpm and the stirring time is 15min; the stirring condition in the other steps is 700 revolutions per minute, the stirring time is 10 minutes, and a filter screen is used in the fifth step to be 500 meshes; in this example, the black paste was a high pigment carbon black milled paste, wherein the carbon black was 8% by weight.

The preparation method of the dual-curing UV piano black paint comprises the following steps:

s1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 10:1.5:1-2, spraying the mixture on a substrate or a primer layer, leveling and drying the mixture at normal temperature for 10min, and then keeping the mixture in an environment at 80 ℃ for 5min;

S2, performing UV curing, wherein the UV exposure energy is 800MJ/cm < 2 >.

The UV paint thinner in the embodiment comprises the following raw materials in parts by weight: 60 parts of ethyl acetate; 40 parts of MIBK; the preparation method comprises the following steps: mixing 40 parts by weight of MIBK and 60 parts by weight of ethyl acetate, and uniformly stirring for 10 minutes.

The UV paint curing agent in the embodiment comprises the following raw materials in parts by weight: desmodur N75, 78 parts of Kogyo Polymer (China); 28 parts of butyl acetate; the preparation method comprises the following steps: 28 parts by weight of butyl acetate and 78 parts by weight of Desmodur N75 of the Kogyo polymer (China Co., ltd.) were mixed and stirred uniformly for 20 minutes.

Embodiment III:

the preparation method of the colored dual-curing UV coating of the embodiment is basically the same as that of the embodiment 1, except that the coating of the embodiment comprises the following raw materials in parts by weight:

wherein the ultraviolet light initiator comprises 2 weight parts of ultraviolet light initiator A, 1.3 weight parts of ultraviolet light initiator B and 1 weight part of ultraviolet light initiator C;

the paint preparation method of this example is basically the same as that of example 1, except that the stirring condition in the first step of this example is 700 rpm, and the stirring time is 12min; the stirring condition in the other steps is 700 revolutions per minute, the stirring time is 20 minutes, and a filter screen is used in the fifth step and is 450 meshes; in this embodiment, the black paste is a high pigment carbon black milled paste, wherein the weight content of carbon black is 5%.

The method for preparing the colored dual-curing UV coating in the embodiment comprises the following steps:

s1, uniformly mixing and blending the UV coating, the UV coating curing agent and the UV coating diluent according to the weight ratio of 10:1.5:1-2, spraying the mixture on a substrate or a primer layer, leveling and drying the mixture at normal temperature for 8min, and then keeping the mixture in an environment at 70 ℃ for 10min;

s2, performing UV curing, wherein the UV exposure energy is 600MJ/cm < 2 >.

The UV paint thinner in the embodiment comprises the following raw materials in parts by weight: 60 parts of ethyl acetate; 40 parts of MIBK; the preparation method comprises the following steps: mixing 40 parts by weight of MIBK and 60 parts by weight of ethyl acetate, and uniformly stirring for 15 minutes.

The UV paint curing agent in the embodiment comprises the following raw materials in parts by weight: 75 parts of Desmodur N75 parts of Kesi Ind (China Co., ltd.); 25 parts of butyl acetate; the preparation method comprises the following steps: 25 parts by weight of butyl acetate and 75 parts by weight of Desmodur N75 of the Kogyo polymer (China Co., ltd.) were mixed and stirred uniformly for 15 minutes.

Embodiment four:

the preparation method of the dual-curing UV piano black coating of the embodiment is basically the same as that of the embodiment 1, except that the coating of the embodiment comprises the following raw materials in parts by weight:

Wherein the ultraviolet light initiator comprises 1.5 weight parts of ultraviolet light initiator A, 1.2 weight parts of ultraviolet light initiator B and 1.5 weight parts of ultraviolet light initiator C;

in this example, the black paste is a high pigment carbon black milled paste, wherein the carbon black is 1% by weight.

Example five

wherein the ultraviolet light initiator comprises 1 weight part of ultraviolet light initiator A, 1 weight part of ultraviolet light initiator B and 1 weight part of ultraviolet light initiator C;

table 1 below shows the raw material compositions of the coatings in the above examples.

Table 1: example raw Material composition of coating

/>

The following table 2 shows the coating raw material composition of the comparative case, and the preparation method and the use method thereof are substantially the same as the above examples.

Table 2: comparative example coating raw material composition

The paint obtained in the above examples and comparative examples were used, and the properties of the paint film formed were examined, and the results of the examination are shown in Table 3.

Table 3: paint film property test results

/>

Referring to fig. 3-12, another aspect of the present application provides an apparatus for dual curing a UV piano black paint.

The device comprises a stirring rod 1, a stirring barrel 2, a powder discharging device 3 and a water injection pipeline 4, wherein one side of the stirring rod 1 is provided with a powder pouring device 40, the powder pouring device 40 is connected with the powder discharging device 3, and the device further comprises a pushing device for pushing the stirring barrel 2 to the lower part of the stirring rod 1; the power device is used for controlling the pushing device to work and the stirring barrel 2 and the stirring rod 1 to rotate; the reversing device is arranged in the power device and is used for controlling the stirring barrel 2 and the stirring rod 1 to reversely rotate; the blowing device is connected with the pushing device and continuously blows air into the stirring barrel 2; the detection device is used for detecting the barrel diameter of the stirring barrel 2 and is connected with the driving device; the driving device is used for driving the powder pouring device 40 to move, changing the caliber of a powder outlet, changing the stirring diameter of the stirring rod 1 and changing the blowing position of the blowing device according to the detection quantity of the detection device; and the translation device is used for controlling the synchronous movement of the stirring rod 1, the powder pouring device 40, the blowing device and the water injection pipeline 4.

The power device comprises a motor 5, a first driving wheel 7 is arranged on a motor rod 6 of the motor 5, a stirring position of the stirring barrel 2 is located on a rotating disc 8, the stirring barrel 2 is pushed to the rotating disc 8 from one side of the rotating disc 8 by the pushing device, a second driving wheel 9 is arranged below the rotating disc 8, the second driving wheel 9 is connected with the rotating disc 8 through a driving rod 10, the first driving wheel 7 and the second driving wheel 9 are connected through a first belt 12, a third driving wheel 13 is further arranged on the driving rod 10, a magnetic coupler 11 is arranged between the third driving wheel 13 and the second driving wheel 9, the second driving wheel 9 and the third driving wheel 13 can be connected when the magnetic coupler 11 is started, and the third driving wheel 13 is connected with a fourth driving wheel 15 through a second belt 14.

The fourth driving wheel 15 is used for driving the reversing device to work, the reversing device comprises a first bevel gear 16, a second bevel gear 17 symmetrical to the first bevel gear 16, a third bevel gear 18 is meshed between the first bevel gear 16 and the second bevel gear 17, a connecting shaft is arranged on the fourth driving wheel 15 and connected with the first bevel gear 16, a fixed seat 19 is arranged above the stirring barrel 2, meanwhile, a fifth driving wheel 20 is arranged at the lower end of the fixed seat 19 and above the third bevel gear 18, connecting teeth are arranged on the second bevel gear 17, a clamping tooth groove is formed in the fifth driving wheel 20, the fifth driving wheel 20 is embedded into the connecting teeth of the second bevel gear 17 after being moved downwards, the second bevel gear 17 drives the fifth driving wheel 20 to rotate, the fifth driving wheel 20 is connected with the sixth driving wheel 22 through a third belt 21, and the stirring rod 1 is arranged on the sixth driving wheel 22 and is positioned right above the stirring barrel 2.

The pushing device comprises a first U-shaped frame, the motor rod 6 penetrates through the opening end of the first U-shaped frame, a bearing is arranged on the first U-shaped frame and used for ensuring that the first U-shaped frame cannot rotate along with the motor rod 6, an eccentric wheel set is arranged on the motor rod 6 in the opening of the first U-shaped frame, the eccentric wheel set comprises a first eccentric wheel 24 and a second eccentric wheel 25 meshed with the first eccentric wheel 24, a second U-shaped frame is arranged on the second eccentric wheel 25, the opening end of the second U-shaped frame is rotatably arranged on the upper end face and the lower end face of the second eccentric wheel 25, a rotating fulcrum is located at the edge of the second eccentric wheel 25, a push rod 27 is arranged on the outer side of the U-shaped end of the second U-shaped frame, the push rod 27 penetrates through the U-shaped end of the first U-shaped frame, when the motor rod 6 rotates, the push rod 27 moves towards the opening end of the first U-shaped frame through the eccentric wheel set, and the push rod 27 is pushed to the stirring disc 8 to be pushed by the stirring disc.

In order to ensure that the stirring tank 2 is completely placed at the center of the rotating disc 8, a mechanical arm is further provided for moving the stirring tank 2 further to the center of the rotating disc 8, and when the stirring tank 2 placed at one side of the push rod 27 is of a matched size, the push rod 27 is completely pushed out of the stirring tank 2, and at this time, the stirring tank 2 is just pushed to the center of the rotating disc 8.

The translation device comprises a telescopic cylinder 28 arranged on a fixed seat 19, a fixed plate 29 is arranged on one side of a rotating disc 8, a sensing device 30 is arranged on the fixed plate 29, the sensing device 30 comprises a first sensing device and a second sensing device, the first sensing device is provided with one group and is used for controlling the telescopic cylinder 28 to start, the second sensing device is provided with two groups, the other group is arranged on the fixed seat 19, when the two second sensing devices are opposite, the magnetic coupler 11 is started, the second sensing device is used for controlling the magnetic coupler 11 to work, the stirring barrel 2 is pushed onto the rotating disc 8 through the pushing device, the first sensing device is started to start the telescopic cylinder 28, when the fixed seat 19 descends along with the telescopic cylinder 28, the second sensing device is started and controls the magnetic coupler 11 to work, the second driving wheel 9 drives the third driving wheel 13, and the second driving wheel 9 can drive the third driving wheel 13 to rotate synchronously, and the stirring disc 1 can rotate synchronously.

When the telescopic cylinder 28 descends to the lowest point, the powder discharging device 3 can be triggered to start through the other sensing device 30 (the telescopic cylinder 28 can be triggered by a proximity switch or infrared sensing), the powder discharging device 3 works to pour powder into the powder pouring device 40, the powder is poured into the stirring barrel 2, the magnetic coupler 11 and the telescopic cylinder 28 are further connected with a time relay, stirring time is fixed each time, after stirring is completed, the magnetic coupler 11 is disconnected, the second driving wheel 9 does not drive the third driving wheel 13 to rotate any more, the rotating disc 8 and the stirring rod 1 do not rotate any more, the telescopic cylinder 28 controls the fixing seat 19 to return, and when the fixing seat 19 is separated from the lowest point, the powder discharging device 3 stops working, the powder is not poured into the powder pouring device 40 any more, and the water injection device 4 stops injecting water.

As shown in fig. 6, the detecting device includes a detecting block 31, a bevel edge 32 is disposed on the detecting block 31 and located at one side of the stirring barrel 2, a first air chamber 33 is disposed at the rear side of the detecting block 31, a first piston rod 34 with an end embedded into the first air chamber 33 is disposed on the detecting block 31, a first piston 35 is disposed at an end of the first piston rod 34, and meanwhile, in order to ensure that the detecting block 31 can be reset after the stirring barrel 2 is moved away, a first spring 36 is disposed outside the first piston rod 34, and two ends of the first spring 36 are connected to the first air chamber 33 and the detecting block 31.

The stirring barrel 2 is filled with liquid material, and when being pushed by the push rod 27, the stirring barrel 2 presses the detection block 31 to move.

As shown in fig. 7-9, the driving device includes a second air chamber 37 disposed in the fixing seat 19, the first air chamber 33 is connected to the second air chamber 37 through a first air pipe 38, a moving rod for pushing the powder pouring device 40 to move is disposed on the second air chamber 37, a second spring is disposed on the moving rod for controlling the moving rod to reset, in an initial state, the front end of the moving rod is fixed on the powder pouring device 40, a through groove 39 is disposed on the fixing seat 19 and located at the front end of the moving rod, the powder pouring device 40 is mounted in the through groove 39, a bar groove is disposed in the middle of the through groove 39, a bump embedded in the bar groove is disposed in the middle of the powder pouring device 40, a first 41 is disposed at the lower opening of the powder pouring device 40, a rotatable second shutter 42 is disposed on the outer ring, a gear 43 is disposed below the fixing seat 19 and located at one side of the powder pouring device 40, a second shutter 44 is disposed on one side of the same side as the gear, a second shutter 44 is disposed on the other side of the gear, and the second shutter 44 is disposed on the other side of the gear, and the second shutter 42 is engaged with the bar groove, and the diameter of the second shutter 42 is gradually changed to change the diameter of the fan-shaped shutter into a circular shape by the circular groove and the circular groove, and the circular groove 42 is further change, and the diameter of the circular groove is gradually changing to the circular groove is opened and the circular groove is opened, and the circular groove is changed, and the circular groove is opened, and the circular groove is changed.

The water injection amount of the water injection pipeline 4 is controlled by pressure, the variable generated by the movement of the detection block 31 is connected to a signal switch, and the pressure of the water injection pipeline 4 is changed according to the information of the signal switch, so that the water yield in unit time is increased, the larger the diameter of the stirring barrel 2 is, the water yield is correspondingly increased, and the opening and closing of the water injection pipeline 4 can be controlled by an induction switch for controlling the powder discharging device 3.

As shown in fig. 12, the stirring rod 1 is composed of a main rod 101 and an auxiliary rod 102, a cross pipe 103 is arranged below the main rod 101, the main rod 101 is connected to the center of the cross pipe 103, the main rod 101 is communicated with the cross pipe 103 and is provided with a cavity therein, the second air chamber 37 is connected to the main rod 101 through a second air pipe 45, a bearing is arranged between the second air pipe 45 and the main rod 101 to ensure that the second air pipe 45 cannot rotate along with the main rod 101, a third spring is arranged in the cross pipe 103 and connected to the auxiliary rod 102, and the auxiliary rod 102 moves towards the extending direction of the cross pipe 103 by air in the second air chamber 37.

As shown in fig. 8-9, the blowing device comprises a first connecting rod 46 fixedly arranged on the push rod 27, a second connecting rod 47 which stretches over the first connecting rod 46 is arranged on the first connecting rod 46, a third air chamber 48 is also arranged on the fixed seat 19, the second connecting rod 47 is embedded into the third air chamber 48, the second connecting rod 47 follows the fixed seat 19 to move, the push rod 27 can ensure the movement of the second connecting rod 47 when moving, meanwhile, the first connecting rod 46 and the second connecting rod 47 can not interfere when the fixed seat 19 moves downwards, a second piston 49 connected with the second connecting rod 47 is arranged in the third air chamber 48, meanwhile, an air valve 50 is arranged on the second piston 49, when the second connecting rod 47 moves inwards, the air valve 50 is closed, when the second connecting rod 47 moves outwards, the air valve 50 is opened, a first waist-round through hole 51 communicated with the outside is arranged at the lower end surface of the third air chamber 48, a fourth air chamber 52 is arranged at one side of the third air chamber 48, an air ventilation plate 53 is arranged between the third air chamber 48 and the fourth air chamber 52, a second waist-round through hole 54 is arranged on the air ventilation plate 53, the first waist-round through hole 51 and the second waist-round through hole 54 form an included angle, in an initial state, the common through hole position formed by the first waist-round through hole 51 and the second waist-round through hole 54 is positioned at the left side, a third piston is arranged in the fourth air chamber 52, the air ventilation plate 53 is fixed on the third piston, a third spring for resetting is arranged on the third piston, the fourth air chamber 52 is connected with the second air chamber 37 through a third air pipe 55, when the ventilation plate 53 is moved, the common through hole position formed by the first and second kidney-shaped through holes 51 and 54 is gradually moved from the left side to the right side.

The working process of the invention comprises the following steps: at first, the stirring barrel 2 is placed on one side of the rotating disc 8 by a mechanical arm, the motor 5 is started, the motor rod 6 rotates and drives the first eccentric wheel 24 and the second eccentric wheel 25 to rotate, the push rod 27 on the second U-shaped frame reciprocates, the push rod 27 pushes the stirring barrel 2 to the center of the rotating disc 8, the stirring barrel 2 presses the first piston 35 on the detection block 31 to move in the first air bin 33, the moving distance is matched with the diameter of the stirring barrel 2, the larger the diameter of the stirring barrel 2 is, the more air is extruded into the second air bin 37, the first sensing device 30 senses the stirring barrel 2 at the moment, the telescopic air cylinder 28 works, the fixing seat is controlled to move downwards, when the magnetic coupler moves downwards to the lowest point, the second induction device controls the magnetic coupler to start, the first driving wheel 7 drives the second driving wheel 9 and can drive the third driving wheel 13 to rotate, the rotating disc 8 drives the stirring barrel 2 to rotate, the third driving wheel 13 drives the fourth driving wheel 15 to rotate, when the telescopic cylinder 28 controls the fixed seat 19 to move downwards, the fifth driving wheel 20 is matched with the second bevel gear 17 to enable the fifth driving wheel 20 and the sixth driving wheel 22 to rotate, further the stirring rod 1 is controlled to rotate in the opposite direction of the stirring barrel 2, the powder pouring device 40 moves in the through groove 39 according to the diameter of the stirring barrel 2 and correspondingly changes the caliber of a powder outlet, meanwhile, the movement of the ventilation plate 53 is controlled, the common through hole position formed by the first kidney-shaped through hole 51 and the second kidney-shaped through hole 54 is changed through the movement of the ventilation plate 53, so that the blowing position is controlled, the stirring diameter of the stirring rod 1 is controlled through the change of the distance of the auxiliary rod 102 moving on the cross pipe 103, the water injection amount of the water injection pipeline 4 is correspondingly changed, the telescopic cylinder 28 controls the fixing seat 19 to move upwards after stirring is completed, the magnetic coupler 11 is disconnected, and the stirring barrel 2 is taken away through a mechanical arm.

The foregoing description is only a preferred embodiment of the present application and is not intended to limit the present application in any way, and simple modifications, equivalent changes or modifications can be made without departing from the technical solutions of the present application, all falling within the scope of the present application.

Claims

1. The preparation method of the colored dual-cured UV piano black paint is characterized by comprising the following steps of:

Wherein the raw materials comprise the following components in parts by weight: 35-40 parts of tetra-functional hydroxyl polyurethane acrylic resin; 10-15 parts of trifunctional aliphatic polyurethane acrylic resin; 8-10 parts of high TG point thermoplastic acrylic resin; 5-6 parts of hydroxy acrylic resin; 7-10 parts of TMPTA monomer; 3-4 parts of ultraviolet initiator; 0.5-1 part of leveling agent; 3-5 parts of black paste; 5-20 parts of ethyl acetate; 10-20 parts of MIBK; 6-15 parts of DBE;

wherein, the weight parts of MIBK added in the second step are the same as the weight parts of DBE added in the fifth step;

wherein the stirring condition in the first step is 600-800 rpm; the stirring conditions in the rest steps are 300-700 rpm.

2. Wherein the tetra-functional hydroxyl polyurethane acrylic resin is polyurethane acrylic oligomer containing hydroxyl; the TMPTA monomer is a trifunctional acrylic acid oligomer; the black paste is high-pigment carbon black ground color paste, wherein the weight content of the carbon black is not higher than 10%;

the tetra-functional hydroxyl polyurethane acrylic resin comprises the following raw materials in parts by weight: 8-15 parts of trifunctional aliphatic polyurethane acrylic resin A; 8-15 parts of high TG point thermoplastic acrylic resin B.

3. The preparation method of the colored dual-cured UV piano black coating according to claim 1, wherein the ultraviolet initiator comprises the following raw materials in parts by mass: 184,1-2 parts of ultraviolet initiator; 1-2 parts of ultraviolet initiator TPO; 907,1-2 parts of ultraviolet initiator.

4. The method for preparing the colored dual-cured UV piano black coating according to claim 1, wherein the leveling agent is TEGO2100 leveling agent.

5. The preparation method of the colored dual-cured UV piano black coating, according to claim 1, wherein the prepared colored dual-cured UV piano black coating is prepared by fully stirring paint liquid, diluting the paint liquid to the construction viscosity by using a matched diluent and filtering the paint liquid by using a 400-mesh filter screen before spraying construction.

6. A device for preparing the colored dual-curing UV piano black paint in any one of claims 1-4, which comprises a stirring rod, a stirring barrel, a powder discharging device and a water injection pipeline, wherein one side of the stirring rod is provided with a powder pouring device, the powder pouring device is connected with the powder discharging device,

the pushing device is used for pushing the stirring barrel to the lower part of the stirring rod;

the power device is used for controlling the pushing device to work and the stirring barrel and the stirring rod to rotate;

the reversing device is arranged in the power device and is used for controlling the stirring barrel and the stirring rod to reversely rotate;

the blowing device is connected with the pushing device and continuously blows air into the stirring barrel;

The detection device is used for detecting the diameter of the stirring barrel and is connected with the driving device;

the driving device is used for driving the powder pouring device to move, changing the caliber of a powder outlet, changing the stirring diameter of the stirring rod and changing the blowing position of the blowing device according to the detection quantity of the detection device;

and the translation device is used for controlling the synchronous movement of the stirring rod, the powder pouring device, the air blowing device and the water injection pipeline.

7. The device for dual curing of the UV piano black paint according to claim 5, wherein the power device comprises a motor, a first driving wheel is arranged on a motor rod of the motor, the stirring barrel is located on a rotating disc, a second driving wheel is arranged below the rotating disc, the second driving wheel is connected to the rotating disc through a driving rod, a magnetic coupler is arranged on the driving rod, the first driving wheel and the second driving wheel are connected through a first belt, a third driving wheel is further arranged on the driving rod, the magnetic coupler is arranged between the second driving wheel and the third driving wheel, the third driving wheel is connected with a fourth driving wheel through a second belt, the fourth driving wheel is used for driving the reversing device to work, the reversing device comprises a first bevel gear and a second bevel gear which is symmetrical to the first bevel gear, a third bevel gear is meshed between the first bevel gear and the second bevel gear, a fixing seat is arranged above the second bevel gear, the lower end of the fixing seat is just above the third bevel gear, the third driving wheel is arranged on the fifth bevel gear, and the fifth reversing device is connected with the sixth stirring barrel through a fifth bevel gear, and the stirring barrel is arranged on the sixth stirring rod.

8. The device for dual curing of the black coating on the UV piano according to claim 6, wherein the pushing device comprises a first U-shaped frame, the motor rod penetrates through the opening end of the first U-shaped frame, an eccentric wheel set is arranged on the motor rod in the opening of the first U-shaped frame, the eccentric wheel set comprises a first eccentric wheel and a second eccentric wheel meshed with the first eccentric wheel, a second U-shaped frame is arranged on the second eccentric wheel, the opening end of the second U-shaped frame is rotatably arranged on the upper end face and the lower end face of the second eccentric wheel, a rotation pivot is located at the edge of the second eccentric wheel, a pushing rod is arranged outside the U-shaped end of the second U-shaped frame, and the pushing rod penetrates through the U-shaped end of the first U-shaped frame.

9. The device for dual-curing UV piano black paint according to claim 7, wherein the translation device comprises a telescopic cylinder arranged on the fixed seat, a fixed plate is arranged on one side of the rotating disc, an induction device is arranged on the fixed plate, a corresponding induction device is arranged on the fixed seat, the push rod pushes the stirring barrel to the rotating disc, the induction device is used for controlling the telescopic cylinder and the magnetic coupler to start, the telescopic cylinder controls the fixed seat to move downwards, and the magnetic coupler controls the second driving wheel to drive the third driving wheel to rotate synchronously.

10. The device for dual curing of the black coating on the UV piano according to claim 8, wherein the detecting device comprises a detecting block, the detecting block is provided with a bevel edge, one side of the detecting block is provided with a first air bin, the detecting block is provided with a plurality of groups of first piston rods, the ends of the first piston rods are arranged in the first air bin, the ends of the first piston rods are provided with first pistons arranged in the first air bin, a first spring is arranged outside the first piston rods, and two ends of the first spring are connected to the first air bin and the detecting block.

11. The device for dual curing UV piano black paint according to claim 9, wherein the driving device comprises a second air chamber arranged in the fixed seat, the first air chamber is connected to the second air chamber through a first air pipe, a through groove is arranged on the fixed seat, a powder pouring device is arranged in the through groove, a first shielding plate is arranged at the lower opening of the powder pouring device, a rotatable second shielding plate is further arranged, a gear is arranged on the outer ring of the second shielding plate, a rack is arranged below the fixed seat and positioned at one side of the powder pouring device, the rack is meshed with the gear, the second shielding plate can rotate on the powder pouring device when moving, the caliber of the powder pouring device is controlled to change, the stirring rod is composed of a main rod and an auxiliary rod, a cross pipe is arranged at the lower end of the main rod, the auxiliary rod is movably arranged in the cross pipe, the main rod is communicated with the cross pipe and is provided with a cavity in the cross pipe, the second air chamber is connected to the second air chamber through a second air pipe, the piston is further arranged on the piston is embedded in the fixed seat, a third air chamber is provided with a third air chamber, a third air chamber is embedded in the piston is arranged on the piston, a fourth air chamber is provided with a third air chamber, a piston is embedded in the piston is provided with a third air chamber, and a piston is provided with a piston, the first kidney-shaped through hole and the second kidney-shaped through hole form an included angle, the fourth air bin is connected with the second air bin through a third air pipe, and the ventilation plate moves to enable the positions of the common through holes formed by the first kidney-shaped through hole and the second kidney-shaped through hole to move after moving.