EP4696422A1

EP4696422A1 - Preparation process for skin-like matte effects and apparatus thereof

Info

Publication number: EP4696422A1
Application number: EP23944909.3A
Authority: EP
Inventors: Song Hu; Xia MENG; Jianyu LIU
Original assignee: Guangdong Richfruits Coating Technology Co Ltd
Current assignee: Guangdong Richfruits Coating Technology Co Ltd
Priority date: 2023-07-12
Filing date: 2023-11-21
Publication date: 2026-02-18
Also published as: DE212023000466U1; WO2025010903A1

Abstract

The present invention relates to a skin-feel matte preparation process. A pre-curing lamp device is used to preliminarily cure the paint surface of a workpiece coated with an ultraviolet (UV) skin-feel matte paint, and a final curing lamp device is used to completely and ultimately cure the paint surface of the workpiece coated with the UV skin-feel matte paint. The final curing lamp device includes a skin-feel matte curing lamp with a wavelength of 253-257 nm. The skin-feel matte curing lamp irradiates the UV skin-feel matte paint on the workpiece, causing the UV skin-feel matte paint to contract and form a non-smooth paint surface, thereby achieving a matte effect on the workpiece paint surface. This process uses the skin-feel matte curing lamp with a wavelength of 253-257 nm to irradiate the UV skin-feel matte paint on the workpiece surface, effectively causing the UV skin-feel matte paint to contract on the workpiece surface and form a non-smooth state, imparting a soft, baby-skin-like tactile quality, while also achieving an extremely matte effect of 0.5-5.0 degrees on the workpiece paint surface, with pronounced skin-feel and matte effects.

Description

TECHNICAL FIELD

The present invention relates to the technical field of paint surface curing, and specifically to a skin-feel matte preparation process and device thereof.

BACKGROUND

Chinese Patent No. CN202120720678.2 discloses a device for generating a skin-feel using skin-feel UV coating. The device comprises a machine frame provided with a conveying assembly configured to convey plates, and a plurality of sets of UV excimer lamp components arranged above the conveying assembly. When plates are conveyed by the conveying assembly, under the irradiation of ultraviolet (UV) excimer lamps in the UV excimer lamp components, the skin-feel UV coating absorbs nano-ultraviolet light emitted by the UV excimer lamps to form a skin-feel effect. Since the plurality of sets of UV excimer lamp components are all arranged above the conveying assembly, the UV excimer lamps cannot irradiate the lower surface of the plates, resulting in low working efficiency.
The reflection effect is poor, and the skin-feel effect is poor.
Moreover, the claims state that the wavelength of the UV excimer lamps is 172-185 nm, and nitrogen gas is required to achieve the skin-feel effect, resulting in high production costs and a complex process structure.
Chinese Patent No. 202211576034.6 discloses a UV light curing machine. Referring to Figs. 3 and 4 of the patent, the machine adopts an arc-shaped reflective structure. The arc-shaped reflective structure has fewer reflective surfaces and a small reflection area, leading to insufficient curing effect.
Therefore, further improvement is needed.

SUMMARY

The object of the present invention is to provide a skin-feel matte preparation process and device thereof.
The object of the present invention is achieved as follows:
A skin-feel matte preparation process, wherein a light source with a wavelength of 250-260 nm is used to irradiate a workpiece that is roller-coated or spray-coated with a UV skin-feel matte paint, such that a surface layer of a UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving a skin-feel and matte effect on a paint surface of the workpiece.
A skin-feel matte preparation process, wherein a conventional UV curing machine is also used to perform final overall irradiation on a workpiece that is roller-coated or spray-coated with a UV skin-feel matte paint, such that a surface layer of a UV skin-feel matte paint film on the workpiece is completely cured.
Wherein the conventional UV curing machine is located behind the light source with the wavelength of 250-260 nm, and the conventional UV curing machine and the light source are arranged in one device, or are separately arranged in different devices and then cooperate with each other.
The skin-feel matte preparation process is further configured to selectively use a pre-curing device to pre-irradiate the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint according to preparation conditions of the skin-feel matte, such that the surface layer of the UV skin-feel matte paint film on the workpiece is pre-cured, to improve the skin-feel and matte effect on the paint surface of the workpiece, wherein the pre-curing device is a light emitting diode (LED) lamp or a gallium lamp.
Wherein the pre-curing device is located in front of the light source with the wavelength of 250-260 nm, and the pre-curing device and the light source are arranged in one device, or are separately arranged in different devices and then cooperate with each other.
After skin-feel matte curing, a post-curing process and a post-curing device are further required; the post-curing device is a UV curing device, and the UV curing device is configured to be separately arranged on an independent device, or is arranged as a module at a rear end of a skin-feel matte device; for planar skin-feel matte preparation, the UV curing device is arranged as a module at a rear end of a skin-feel matte curing device; and for 3D skin-feel matte preparation, the UV curing device is used as an independent device.
To better control the skin-feel matte effect, a pre-curing process and a pre-curing device are typically employed; the pre-curing device can be an LED or gallium lamp; the pre-curing device can be an independent device or placed at the front end of the skin-feel matte device; typically, the pre-curing device is placed at the front end of the skin-feel matte device for use.
After skin-feel matte curing, a post-curing process and a post-curing device are also required; the post-curing device is a UV curing device; the post-curing device can be an independent device or can be placed as a module at the rear end of the skin-feel matte device; usually, for planar skin-feel matte preparation, the post-curing device is placed as a module at the rear end of the skin-feel matte curing device, and for 3D skin-feel matte process, the post-curing device is used as an independent UV curing device.
A skin-feel matte preparation process, wherein the preparation process includes the following steps:

a. manually, electrically, or pneumatically adjusting a vertical spacing between a conveying surface of a conveyor device and a curing lamp group according to a thickness of the workpiece;
b. placing the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint on the conveyor device, and driving the workpiece to move towards a curing chamber by the conveyor device;
c. driving the workpiece to enter the curing chamber by the conveyor device, and first passing the workpiece through a pre-curing lamp device on the curing chamber, wherein the pre-curing lamp device includes an LED curing lamp, and the LED curing lamp irradiates the workpiece coated with the UV skin-feel matte paint such that the UV skin-feel matte paint is pre-cured, thereby achieving pre-curing of a bottom layer of the UV skin-feel matte paint on the workpiece;
d. driving the workpiece to continue moving by the conveyor device, and then passing the workpiece through a final curing lamp device on the curing chamber after the bottom layer of the UV skin-feel matte paint on the workpiece is pre-cured, wherein the final curing lamp device includes a skin-feel matte curing lamp with a wavelength of 253-257 nm, and the skin-feel matte curing lamp irradiates the UV skin-feel matte paint on the workpiece such that the surface layer of the UV skin-feel matte paint film contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece; and
e. driving the workpiece to continue moving and enter a conventional UV curing machine by the conveyor device after the skin-feel and matte effect are formed on the UV skin-feel matte paint on the workpiece, and completely curing the UV skin-feel matte paint on the workpiece under irradiation of a mercury lamp.

When the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint is on the conveyor device, the conveyor device conveys the workpiece at a speed of 3-20 m/min; by adjusting a vertical spacing between the pre-curing lamp device and the conveying surface of the conveyor device, a vertical spacing between the pre-curing lamp device and the workpiece is thereby adjusted, so that the pre-curing lamp device irradiates the workpiece with appropriate intensity of energy; by adjusting a vertical spacing between the final curing lamp device and the conveying surface of the conveyor device, a vertical spacing between the final curing lamp device and the workpiece is thereby adjusted, so that the final curing lamp device irradiates the workpiece with appropriate intensity of energy; and when the energy irradiated onto the workpiece is appropriate, the surface layer of the UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect.
The number of the pre-curing lamp device and the final curing lamp device is adjusted according to specifications and dimensions of the workpiece, wherein the pre-curing lamp device and the final curing lamp device are provided with reflective members configured to reflect irradiation angles of lamps; and during operation, light generated by the pre-curing lamp device and the final curing lamp device is reflected at a plurality of different angles through reflection walls of the reflective members and irradiated onto the workpiece, such that the UV skin-feel matte paint on the workpiece absorbs energy from the skin-feel matte curing lamp with a wavelength of 253-257 nm and thereby contracts and forms a non-smooth and wrinkled surface, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect.
A skin-feel matte preparation device includes a conveyor device for conveying a workpiece coated with a UV skin-feel matte paint to a curing chamber, wherein the curing chamber is provided with a pre-curing lamp device and a final curing lamp device arranged at intervals in a front-rear direction; and irradiation surfaces of the pre-curing lamp device and the final curing lamp device are located above the conveyor device, so that light generated by the pre-curing lamp device and the final curing lamp device is irradiated onto the workpiece.
The skin-feel matte preparation device is a UV skin-feel matte paint curing device for an upper surface of the workpiece, wherein the pre-curing lamp device includes a first lamp housing, a first reflective member arranged at a bottom opening of an inner cavity of the first lamp housing, and an LED curing lamp arranged on the first reflective member; the LED curing lamp is an LED lamp bead, an LED rigid strip, or an LED flexible strip; and the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on a reflection plane of the first reflective member by adhesion or fasteners.
The final curing lamp device of the UV skin-feel matte paint curing device for the upper surface of the workpiece includes a second lamp housing, a second reflective member arranged at a bottom opening of an inner cavity of the second lamp housing, and a skin-feel matte curing lamp located below the second reflective member; a wavelength of the skin-feel matte curing lamp is in the range of 253-257 nm, preferably one with a wavelength of 254 nm; two ends of the skin-feel matte curing lamp are respectively fixed on first end plates of the second lamp housing; the second reflective member includes a first inclined reflective surface and a second inclined reflective surface; the skin-feel matte curing lamp is a lamp tube and is located between the first inclined reflective surface and the second inclined reflective surface; a spacing between the first inclined reflective surface and the second inclined reflective surface gradually increases along a direction in which the skin-feel matte curing lamp irradiates the workpiece; a first wave scattering segment arranged in an undulating manner is provided between the first inclined reflective surface and the second inclined reflective surface; and light generated by the skin-feel matte curing lamp is reflected at a plurality of different angles by the first inclined reflective surface, the first wave scattering segment, and the second inclined reflective surface and irradiated onto the workpiece, so that a light irradiation range of the skin-feel matte curing lamp completely covers a paint surface of the upper surface of the workpiece, to cure the UV skin-feel matte paint on the upper surface of the workpiece, wherein the upper surface is planar or an irregularly concave-convex profiled surface.
The first lamp housing is provided with a first inner cavity configured to mount the first reflective member, two sides of the first reflective member are respectively fixed on inner side walls of the first inner cavity, a bottom of the first lamp housing is provided with a first opening, and the first opening forms a first clearance opening for the LED curing lamp to irradiate onto the workpiece.
The second lamp housing is provided with first heat dissipation holes, the second lamp housing is provided with a second inner cavity configured to mount the second reflective member and the skin-feel matte curing lamp, a bottom of the second lamp housing is provided with a second opening, and the second opening forms a second clearance opening for the skin-feel matte curing lamp to irradiate onto the workpiece; and the second lamp housing is provided with first shielding blocks respectively corresponding to the two ends of the skin-feel matte curing lamp, the first shielding blocks are provided with second heat dissipation holes, and a first heat dissipation cavity communicating with the first heat dissipation holes is formed between the first wave scattering segment of the second reflective member and the second inner cavity.
Two ends of the first lamp housing or the second lamp housing are respectively fixed on a first lifting frame and a second lifting frame, the first lifting frame is fixedly arranged on a first movable frame, and the second lifting frame is fixedly arranged on a second movable frame; the curing chamber is provided with a first fixed seat corresponding to the first movable frame, the curing chamber is provided with a second fixed seat corresponding to the second movable frame, a first slider and a first slide rail are provided between the first movable frame and the first fixed seat, and the first movable frame is reciprocally slidably arranged on the first fixed seat through the first slider and the first slide rail; a second slider and a second slide rail are provided between the second movable frame and the second fixed seat, the second movable frame is reciprocally slidably arranged on the second fixed seat through the second slider and the second slide rail, the first fixed seat is provided with a first lifting screw threadedly connected to the first lifting frame, the second fixed seat is provided with a second lifting screw threadedly connected to the second lifting frame, the first fixed seat is provided with a first transmission seat, the second fixed seat is provided with a second transmission seat, the first lifting screw is inserted into the first transmission seat, the second lifting screw is inserted into the second transmission seat, a first synchronization rod is provided between the first lifting screw and the second lifting screw and transversely penetrates and is inserted into the first transmission seat and the second transmission seat, first engaging teeth and second engaging teeth are respectively provided on portions where the first lifting screw and the first synchronization rod are inserted into the first transmission seat, and the first lifting screw and the first synchronization rod are drivingly connected through the first engaging teeth and the second engaging teeth; third engaging teeth and fourth engaging teeth are respectively provided on portions where the second lifting screw and the first synchronization rod are inserted into the second transmission seat, and the second lifting screw and the first synchronization rod are drivingly connected through the third engaging teeth and the fourth engaging teeth; one end of the first synchronization rod is provided with a first adjustment handwheel or a first reducer, and a first motor drivingly connected to the first reducer; and the first adjustment handwheel or the first motor drives the first synchronization rod to rotate, the first synchronization rod simultaneously drives the first lifting screw and the second lifting screw to correspondingly rotate on first nut fixing seats of the respective transmission seats, so that the first lifting screw and the second lifting screw rotate simultaneously, the first lifting frame and the second lifting frame move vertically along the lifting screws through screw transmission, and the first lifting frame and the second lifting frame cause the corresponding movable frames to move along the corresponding fixed seats, so that the first lamp housing or the second lamp housing is arranged to move vertically on the curing chamber, thereby adjusting the vertical spacing between the pre-curing lamp device or the final curing lamp device and the workpiece.
The skin-feel matte preparation device is a 3D skin-feel matte preparation device; the pre-curing lamp device includes an upper pre-curing lamp device and a lower pre-curing lamp device that are vertically spaced; irradiation directions of the upper pre-curing lamp device and the lower pre-curing lamp device are opposed to each other; and the conveyor device is located between the upper pre-curing lamp device and the lower pre-curing lamp device, so that light from the upper pre-curing lamp device and the lower pre-curing lamp device is irradiated onto the workpiece.
Each of the upper pre-curing lamp device and the lower pre-curing lamp device includes a third lamp housing and a third reflective member arranged at a bottom opening of an inner cavity of the third lamp housing; the third reflective member includes a third inclined reflective surface and a fourth inclined reflective surface; a spacing between the third inclined reflective surface and the fourth inclined reflective surface gradually increases along a direction in which the pre-curing lamp device irradiates the workpiece; the third inclined reflective surface and the fourth inclined reflective surface are both provided with a second wave scattering segment configured to fix the LED curing lamp; the second wave scattering segment includes a plurality of inclined surface reflection blocks arranged in an undulating manner; an LED lamp bead, an LED rigid strip, or an LED flexible strip is fixed on each of the inclined surfaces; the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on the second wave scattering segment by adhesion or fasteners; and light generated by the upper pre-curing lamp device and the lower pre-curing lamp device is reflected at a plurality of different angles by the third inclined reflective surface, the fourth inclined reflective surface, and the second wave scattering segment and irradiated onto the workpiece, to pre-cure the UV skin-feel matte paint on five surfaces of the workpiece.
Wherein the five surfaces of the workpiece include an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces.
The final curing lamp device of the 3D skin-feel matte preparation device includes an upper final curing lamp device and a lower final curing lamp device that are vertically spaced; irradiation directions of the upper final curing lamp device and the lower final curing lamp device are opposed to each other; and the conveyor device is located between the upper final curing lamp device and the lower final curing lamp device, so that light from the upper final curing lamp device and the lower final curing lamp device is irradiated onto the workpiece.
Each of the upper final curing lamp device and the lower final curing lamp device includes a fourth lamp housing, a fourth reflective member arranged at a bottom opening of an inner cavity of the fourth lamp housing, and a skin-feel matte curing lamp located below the fourth reflective member; the fourth reflective member includes a fifth inclined reflective surface and a sixth inclined reflective surface; the skin-feel matte curing lamp is provided between the fifth inclined reflective surface and the sixth inclined reflective surface; a wavelength of the skin-feel matte curing lamp is 254 nm; two ends of the skin-feel matte curing lamp are respectively fixed on second end plates of the fourth lamp housing; a spacing between the fifth inclined reflective surface and the sixth inclined reflective surface gradually increases along a direction in which the skin-feel matte curing lamp irradiates the workpiece; a plurality of refraction blocks are provided above a top of the skin-feel matte curing lamp between the fifth inclined reflective surface and the sixth inclined reflective surface; one end of each of two adjacent refraction blocks of the plurality of refraction blocks is connected to each other, or the two adjacent refraction blocks of the plurality of refraction blocks are arranged at intervals; the plurality of refraction blocks constitute a refraction segment of the fourth reflective member; and light generated by the skin-feel matte curing lamp is reflected at a plurality of different angles by the fifth inclined reflective surface, the sixth inclined reflective surface, and the plurality of refraction blocks and irradiated onto the workpiece, to finally cure the UV skin-feel matte paint on the five surfaces of the workpiece.
Wherein the five surfaces of the workpiece include an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces.
The third lamp housing of each of the upper pre-curing lamp device and the lower pre-curing lamp device is provided with a third inner cavity configured to mount the third reflective member; two sides of the third reflective member are respectively fixed on inner side walls of the third inner cavity; a bottom of the third lamp housing is provided with a third opening; the third opening forms a third clearance opening for the LED curing lamp to irradiate onto the workpiece; two ends of the third opening of the third lamp housing are each provided with two inclined light expansion blocks; a spacing between the two inclined light expansion blocks gradually increases toward a direction in which the LED curing lamp irradiates; and light emitted by the LED curing lamp forms inclined diffuse irradiation along left and right sides of the third opening of the third lamp housing through the third inclined reflective surface, the fourth inclined reflective surface, and the inclined light expansion blocks.
The fourth lamp housing of each of the upper final curing lamp device and the lower final curing lamp device is provided with a fourth inner cavity configured to mount the fourth reflective member and the skin-feel matte curing lamp; a bottom of the fourth lamp housing is provided with a fourth opening; the fourth opening forms a fourth clearance opening for the skin-feel matte curing lamp to irradiate onto the workpiece; the fourth lamp housing is provided with second shielding blocks respectively corresponding to the two ends of the skin-feel matte curing lamp; the fourth lamp housing is provided with third heat dissipation holes; the second shielding blocks are provided with fourth heat dissipation holes; and a second heat dissipation cavity communicating with the third heat dissipation holes is formed between the fourth reflective member and the fourth inner cavity.
The fourth reflective member is provided with heat dissipation slots communicating with the second heat dissipation cavity; each two adjacent refraction blocks are respectively inclined toward front and rear ends of the fourth opening of the fourth lamp housing and form front and rear end refraction zones; and light emitted by the skin-feel matte curing lamp is refracted in an inclined manner toward the front and rear ends of the fourth opening of the fourth lamp housing through the front and rear end refraction zones.
The fourth lamp housing of the upper final curing lamp device is arranged in an inclined manner above the conveyor device, an inclination line of the fourth lamp housing and a conveying line of the conveyor device form an inclination angle A, and the inclination angle A has an angle of 30-80 degrees; and the upper final curing lamp device and the lower final curing lamp device are arranged in an upper-lower staggered manner, and a workpiece irradiation coverage zone is formed between the staggered upper final curing lamp device and the lower final curing lamp device.
Two ends of the third lamp housing of the lower pre-curing lamp device and/or the fourth lamp housing of the lower final curing lamp device are respectively provided with connecting blocks; the third lamp housing of the lower pre-curing lamp device and/or the fourth lamp housing of the lower final curing lamp device is detachably mounted on a fixed side plate of the conveyor device or the curing chamber through the connecting blocks; and the third lamp housing of the lower pre-curing lamp device and/or the fourth lamp housing of the lower final curing lamp device is configured to adjust fixed positions of the third lamp housing and/or the fourth lamp housing on the curing chamber through the connecting blocks.
Two ends of the third lamp housing of the upper pre-curing lamp device or the fourth lamp housing of the upper final curing lamp device are respectively fixed on a third lifting frame and a fourth lifting frame, the third lifting frame is slidably arranged on a first fixed frame, and the fourth lifting frame is slidably arranged on a second fixed frame; a third slider and a third slide rail are provided between the third lifting frame and the first fixed frame, and the third lifting frame is reciprocally slidably arranged on the first fixed frame through the third slider and the third slide rail; a fourth slider and a fourth slide rail are provided between the fourth lifting frame and the second fixed frame, the fourth lifting frame is reciprocally slidably arranged on the second fixed frame through the fourth slider and the fourth slide rail, and the first fixed frame is provided with a first support plate seat for receiving a third lifting screw; the third lifting screw is inserted into the first support plate seat and threadedly connected to the third lifting frame; and the second fixed frame is provided with a second support plate seat for receiving a fourth lifting screw, and the fourth lifting screw is inserted into the second support plate seat and threadedly connected to the fourth lifting frame.
The first support plate seat is provided with a third transmission seat, the second support plate seat is provided with a fourth transmission seat, the third lifting screw is inserted into the third transmission seat, the fourth lifting screw is inserted into the fourth transmission seat, a second synchronization rod is provided between the third lifting screw and the fourth lifting screw and transversely penetrates and is inserted into the fourth lifting screw and the fourth transmission seat, fifth engaging teeth and sixth engaging teeth are respectively provided on portions where the third lifting screw and the second synchronization rod are inserted into the third transmission seat, and the third lifting screw and the second synchronization rod are drivingly connected through the fifth engaging teeth and the sixth engaging teeth; seventh engaging teeth and eighth engaging teeth are respectively provided on portions where the fourth lifting screw and the second synchronization rod are inserted into the fourth transmission seat, and the fourth lifting screw and the second synchronization rod are drivingly connected through the seventh engaging teeth and the eighth engaging teeth; one end of the second synchronization rod is provided with a second adjustment handwheel or a second reducer, and a second motor drivingly connected to the second reducer; and the second adjustment handwheel or the second motor drives the second synchronization rod to rotate, the second synchronization rod simultaneously drives the third lifting screw and the fourth lifting screw to correspondingly rotate on second nut fixing seats of the respective transmission seats, so that the third lifting screw and the fourth lifting screw rotate simultaneously, the third lifting frame and the fourth lifting frame move vertically along the lifting screws through screw transmission, and the third lifting frame and the fourth lifting frame correspondingly slide on the respective fixed frames, thereby adjusting the vertical spacing between the pre-curing lamp device or the final curing lamp device and the workpiece.
The conveyor device includes a plurality of conveying rollers rotatably arranged on the machine frame, each of the conveying rollers is provided with a gear at one end, the plurality of conveying rollers are drivingly connected through gears and chains, and one of the conveying rollers is provided with a driving motor at one end. The driving motor drives the plurality of conveying rollers to rotate synchronously through transmission structures such as gears and chains.
The beneficial effects of the present invention are as follows:
A pre-curing lamp device is used to preliminarily cure the paint surface of a workpiece coated with a UV skin-feel matte paint, and a final curing lamp device is used to completely and ultimately cure the paint surface of the workpiece coated with the UV skin-feel matte paint.
Furthermore, the cooperation between the upper pre-curing lamp device and the lower pre-curing lamp device, which are directly opposite up and down, forms a front-stage light curing zone, so that when the workpiece on the conveying table enters the front-stage light curing zone, the upper surface paint, the lower surface paint, and the side surface paint of the workpiece coated with the UV skin-feel matte paint can be preliminarily cured. Then, the cooperation between two upper final curing lamp devices and two to five lower final curing lamp devices, which are staggered up and down, forms a rear-stage light curing zone, so that when the workpiece coated with the UV skin-feel matte paint that has completed preliminary curing enters the rear-stage light curing zone, the upper surface paint, the lower surface paint, and the side surface paint of the workpiece coated with the UV skin-feel matte paint can be further cured, thereby ensuring that each position of every paint surface of the workpiece can be uniformly and effectively cured, improving the curing quality of the workpiece paint.
The upper pre-curing lamp device, the lower pre-curing lamp device, the upper final curing lamp device, and the lower final curing lamp device can simultaneously irradiate the upper surface paint, the lower surface paint, and the side surface paint of the workpiece coated with the UV skin-feel matte paint, so that the workpiece coated with the UV skin-feel matte paint can complete the curing of paint at each position in one conveying process, ensuring curing quality while improving curing efficiency.
Only one horizontally arranged upper pre-curing lamp device and one horizontally arranged lower pre-curing lamp device are directly opposite up and down, which can avoid heat accumulation in the front-stage light curing zone while ensuring the curing effect of the workpiece coated with the UV skin-feel matte paint.
The two upper final curing lamp devices are arranged obliquely at intervals, and the two to five lower final curing lamp devices are arranged horizontally at intervals, while the two upper final curing lamp devices and the two to five lower final curing lamp devices are staggered up and down, which can effectively cure the workpiece coated with the UV skin-feel matte paint and avoid heat accumulation in the rear-stage light curing zone.
The two upper final curing lamp devices are arranged obliquely, so that the upper final curing lamp devices have a sufficiently long stroke to irradiate the upper surface paint of the workpiece coated with the UV skin-feel matte paint during the conveying process, enabling the two upper final curing lamp devices, which are few in number, to effectively complete the curing of the upper surface paint of the workpiece coated with the UV skin-feel matte paint, improving the curing quality of the upper surface paint of the workpiece coated with the UV skin-feel matte paint while reducing production costs.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram illustrating the flow structure of a skin-feel matte preparation process according to an embodiment of the present invention.
Fig. 2 is a perspective structural view of a UV skin-feel matte paint curing device for an upper surface of a workpiece according to an embodiment of the present invention.
Fig. 3 is a perspective cross-sectional structural view of the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 4 is a schematic diagram showing the lifting structure of the pre-curing lamp device in the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 5 is an exploded view showing the assembly of the pre-curing lamp device and the lifting structure in the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 6 is an exploded view showing the assembly of the final curing lamp device and the lifting structure in the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 7 is a perspective cross-sectional structural view of the final curing lamp device in the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 8 is a bottom structural view of the final curing lamp device in the UV skin-feel matte paint curing device for the upper surface of the workpiece according to an embodiment of the present invention.
Fig. 9 is a perspective structural view of a 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 10 is a plan cross-sectional structural view of the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 11 is a cross-sectional structural view of the pre-curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 12 is a schematic diagram showing the pre-curing lamp device provided with an undulating wave segment in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 13 is a perspective structural view showing the upper pre-curing lamp device, the upper final curing lamp device, and the conveyor device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 14 is a schematic diagram showing the assembly of the upper final curing lamp device and the lifting structure in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 15 is a schematic diagram showing the assembly of the upper pre-curing lamp device and the lifting structure in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 16 is an exploded assembly structural view showing the conveyor device, the upper pre-curing lamp device, the lower pre-curing lamp device, the upper final curing lamp device, and the lower final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 17 is a schematic diagram showing the obliquely arranged upper final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 18 is an exploded assembly structural view of the upper final curing lamp device or the lower final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 19 is a perspective structural view of the final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 20 is another perspective structural view of the final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 21 is an exploded assembly structural view of the final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 22 is a cross-sectional structural view of the final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 23 is an internal structural view of the final curing lamp device in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 24 is an exploded assembly structural view showing the lower final curing lamp device and the connecting blocks in the 3D skin-feel matte preparation device according to an embodiment of the present invention.
Fig. 25 is a schematic diagram showing the skin-feel matte curing effect on a paint surface of a workpiece according to an embodiment of the present invention.
Fig. 26 is a schematic diagram showing a profiled surface structure of a workpiece according to an embodiment of the present invention.
Fig. 27 is another schematic diagram showing a profiled surface structure of a workpiece according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE EMBODIMENTS

The present invention will be further described below with reference to the accompanying drawings and embodiments.
Referring to Fig. 1 to Fig. 24, a skin-feel matte preparation process is provided, wherein a light source with a wavelength of 250-260 nm is used to irradiate a workpiece that is roller-coated or spray-coated with a UV skin-feel matte paint, such that a surface layer of a UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving a skin-feel and matte effect on a paint surface of the workpiece.
A skin-feel matte preparation process, wherein a conventional UV curing machine is also used to perform final overall irradiation on a workpiece that is roller-coated or spray-coated with a UV skin-feel matte paint, such that a surface layer of a UV skin-feel matte paint film on the workpiece is completely cured.
Wherein the conventional UV curing machine is located behind the light source with the wavelength of 250-260 nm, and the conventional UV curing machine and the light source are arranged in one device, or are separately arranged in different devices and then cooperate with each other.
The skin-feel matte preparation process is further configured to selectively use a pre-curing device to pre-irradiate the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint according to preparation conditions of the skin-feel matte, such that the surface layer of the UV skin-feel matte paint film on the workpiece is pre-cured, to improve the skin-feel and matte effect on the paint surface of the workpiece, wherein the pre-curing device is an LED lamp or a gallium lamp.
Wherein the pre-curing device is located in front of the light source with the wavelength of 250-260 nm, and the pre-curing device and the light source are arranged in one device, or are separately arranged in different devices and then cooperate with each other.
In the skin-feel matte preparation process, a light source with a wavelength of 250-260 nm and a conventional UV curing machine must be used simultaneously. A pre-curing device may be selectively provided and used according to preparation requirements, or the pre-curing device may be omitted.
In the skin-feel matte preparation process, the pre-curing device, the light source with the wavelength of 250-260 nm, and the conventional UV curing machine are used simultaneously and are arranged sequentially.
After skin-feel matte curing, a post-curing process and a post-curing device are further required; the post-curing device is a UV curing device, and the UV curing device is configured to be separately arranged on an independent device, or is arranged as a module at a rear end of a skin-feel matte device; for planar skin-feel matte preparation, the UV curing device is arranged as a module at a rear end of a skin-feel matte curing device; and for 3D skin-feel matte preparation, the UV curing device is used as an independent device.
The pre-curing device, the conventional UV curing machine, and the light source with the wavelength of 250-260 nm are integrally arranged within a single production equipment.
Alternatively, the pre-curing device and/or the conventional UV curing machine and the light source with the wavelength of 250-260 nm may be arranged separately in different devices which are then configured to operate cooperatively.
The pre-curing device is one single production equipment, the conventional UV curing machine is another single production equipment, and the light source with the wavelength of 250-260 nm is a further single production equipment; these three production equipment are set up separately and are subsequently arranged to operate in cooperation.
The above-mentioned preparation process includes the following steps: a. manually, electrically, or pneumatically adjusting a vertical spacing between a conveying surface of a conveyor device 1 and a curing lamp group according to a thickness of the workpiece;

b. placing the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint on the conveyor device 1, and driving the workpiece to move towards a curing chamber 2 by the conveyor device 1;
c. driving the workpiece to enter the curing chamber 2 by the conveyor device 1, and first passing the workpiece through a pre-curing lamp device 3 on the curing chamber 2, wherein the pre-curing lamp device 3 includes an LED curing lamp 5, and the LED curing lamp 5 irradiates the workpiece coated with the UV skin-feel matte paint such that the UV skin-feel matte paint is pre-cured, thereby achieving pre-curing of a bottom layer of the UV skin-feel matte paint on the workpiece;
d. driving the workpiece to continue moving by the conveyor device 1, and then passing the workpiece through a final curing lamp device 4 on the curing chamber 2 after the bottom layer of the UV skin-feel matte paint on the workpiece is pre-cured, wherein the final curing lamp device 4 includes a skin-feel matte curing lamp 6 with a wavelength of 253-257 nm, and the skin-feel matte curing lamp 6 irradiates the UV skin-feel matte paint on the workpiece such that the surface layer of the UV skin-feel matte paint film contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece; and
e. driving the workpiece to continue moving and enter a conventional UV curing machine by the conveyor device 1 after the skin-feel and matte effect are formed on the UV skin-feel matte paint on the workpiece, and completely curing the UV skin-feel matte paint on the workpiece under irradiation of a mercury lamp.

When the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint is on the conveyor device 1, the conveyor device 1 conveys the workpiece at a speed of 3-20 m/min; by adjusting a vertical spacing between the pre-curing lamp device 3 and the conveying surface of the conveyor device 1, a vertical spacing between the pre-curing lamp device 3 and the workpiece is thereby adjusted, so that the pre-curing lamp device 3 irradiates the workpiece with appropriate intensity of energy; by adjusting a vertical spacing between the final curing lamp device 4 and the conveying surface of the conveyor device 1, a vertical spacing between the final curing lamp device 4 and the workpiece is thereby adjusted, so that the final curing lamp device 4 irradiates the workpiece with appropriate intensity of energy; and when the energy irradiated onto the workpiece is appropriate, the surface layer of the UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect.
The number of the pre-curing lamp device 3 and the final curing lamp device 4 is adjusted according to specifications and dimensions of the workpiece, wherein the pre-curing lamp device 3 and the final curing lamp device 4 are provided with reflective members configured to reflect irradiation angles of lamps; and during operation, light generated by the pre-curing lamp device 3 and the final curing lamp device 4 is reflected at a plurality of different angles through reflection walls of the reflective members and irradiated onto the workpiece, such that the UV skin-feel matte paint on the workpiece absorbs energy from the skin-feel matte curing lamp 6 with a wavelength of 253-257 nm and thereby contracts and forms a non-smooth and wrinkled surface, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect.
In the skin-feel matte preparation process, the skin-feel curing lamp is a lamp tube capable of generating energy at a wavelength of 253-257 nm. When this skin-feel curing lamp irradiates the UV skin-feel matte paint on a workpiece, the surface layer of the UV skin-feel matte paint film contracts and forms a non-smooth and wrinkled surface. This surface appears as a diffusely reflective paint surface on the workpiece, imparting a soft, baby-skin-like tactile quality, and having a glossiness in the range of 0.5-5.0 degrees, thus achieving extreme skin-feel. Consequently, the process effectively realizes an extreme skin-feel and matte effect on the painted surface of the workpiece.
This extreme skin-feel and matte effect are shown in Fig. 25.
A skin-feel matte preparation device includes a conveyor device 1 for conveying a workpiece coated with a UV skin-feel matte paint to a curing chamber 2, wherein the curing chamber 2 is provided with a pre-curing lamp device 3 and a final curing lamp device 4 arranged at intervals in a front-rear direction; and irradiation surfaces of the pre-curing lamp device 3 and the final curing lamp device 4 are located above the conveyor device 1, so that light generated by the pre-curing lamp device 3 and the final curing lamp device 4 is irradiated onto the workpiece.
The skin-feel matte preparation device is a UV skin-feel matte paint curing device for an upper surface of the workpiece, wherein the pre-curing lamp device 3 includes a first lamp housing 7, a first reflective member 8 arranged at a bottom opening of an inner cavity of the first lamp housing 7, and an LED curing lamp 5 arranged on the first reflective member 8; the LED curing lamp 5 is an LED lamp bead, an LED rigid strip, or an LED flexible strip; and the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on a reflection plane of the first reflective member 8 by adhesion or fasteners.
The final curing lamp device 4 of the UV skin-feel matte paint curing device for the upper surface of the workpiece includes a second lamp housing 9, a second reflective member 10 arranged at a bottom opening of an inner cavity of the second lamp housing 9, and a skin-feel matte curing lamp 6 located below the second reflective member 10; a wavelength of the skin-feel matte curing lamp 6 is 253-257 nm; two ends of the skin-feel matte curing lamp 6 are respectively fixed on first end plates 11 of the second lamp housing 9; the second reflective member 10 includes a first inclined reflective surface 12 and a second inclined reflective surface 13; the skin-feel matte curing lamp 6 is a lamp tube and is located between the first inclined reflective surface 12 and the second inclined reflective surface 13; a spacing between the first inclined reflective surface 12 and the second inclined reflective surface 13 gradually increases along a direction in which the skin-feel matte curing lamp 6 irradiates the workpiece; a first wave scattering segment 14 arranged in an undulating manner is provided between the first inclined reflective surface 12 and the second inclined reflective surface 13; and light generated by the skin-feel matte curing lamp 6 is reflected at a plurality of different angles by the first inclined reflective surface 12, the first wave scattering segment 14, and the second inclined reflective surface 13 and irradiated onto the workpiece, so that a light irradiation range of the skin-feel matte curing lamp 6 completely covers a paint surface of the upper surface of the workpiece, to cure the UV skin-feel matte paint on the upper surface of the workpiece, wherein the upper surface is planar or an irregularly concave-convex profiled surface.
Specifically, the wavelength of the skin-feel matte curing lamp 6 is 254 nm.
In this embodiment, both the first inclined reflective surface 12 and the second inclined reflective surface 13 are provided with folded edges fixed to the opening of the second lamp housing 9. The opening of the second lamp housing 9 is provided with bent support edges corresponding to the folded edges. The folded edges of the first inclined reflective surface 12 and the second inclined reflective surface 13 are correspondingly supported on the respective support edges.
In this embodiment, the end plate of each lamp housing can be fixed to the lamp housing by screws.
The first lamp housing 7 is provided with a first inner cavity configured to mount the first reflective member 8, two sides of the first reflective member 8 are respectively fixed on inner side walls of the first inner cavity, a bottom of the first lamp housing 7 is provided with a first opening, and the first opening forms a first clearance opening for the LED curing lamp 5 to irradiate onto the workpiece.
The second lamp housing 9 is provided with first heat dissipation holes 31, the second lamp housing 9 is provided with a second inner cavity configured to mount the second reflective member 10 and the skin-feel matte curing lamp 6, a bottom of the second lamp housing 9 is provided with a second opening, and the second opening forms a second clearance opening for the skin-feel matte curing lamp 6 to irradiate onto the workpiece; and the second lamp housing 9 is provided with first shielding blocks 32 respectively corresponding to the two ends of the skin-feel matte curing lamp 6, the first shielding blocks 32 are provided with second heat dissipation holes 33, and a first heat dissipation cavity 34 communicating with the first heat dissipation holes 31 is formed between the first wave scattering segment 14 of the second reflective member 10 and the second inner cavity.
In this embodiment, because the skin-feel matte curing lamp generates a substantial amount of heat during operation, a first heat dissipation cavity 34 communicating with the first heat dissipation holes 31 is formed between the first wave scattering segment 14 of the second reflective member 10 and the second inner cavity. Heat is discharged externally through the first heat dissipation cavity 34 and the first heat dissipation holes 31. Furthermore, an exhaust hood 75 is provided on the top of the curing chamber 2 and communicates with the inner portion of the curing chamber 2. The exhaust hood 75 is connected to an exhaust fan via a duct to expel heat from the curing chamber 2, preventing the internal temperature of the curing chamber 2 from becoming excessively high; this thereby reduces heat accumulation in the second lamp housing 9 and ensures stable operation of the skin-feel matte curing lamp 6.
Two ends of the first lamp housing 7 or the second lamp housing 9 are respectively fixed on a first lifting frame 35 and a second lifting frame 36, the first lifting frame 35 is fixedly arranged on a first movable frame 37, and the second lifting frame 36 is fixedly arranged on a second movable frame 38; the curing chamber 2 is provided with a first fixed seat 39 corresponding to the first movable frame 37, the curing chamber 2 is provided with a second fixed seat 40 corresponding to the second movable frame 38, a first slider and a first slide rail are provided between the first movable frame 37 and the first fixed seat 39, and the first movable frame 37 is reciprocally slidably arranged on the first fixed seat 39 through the first slider and the first slide rail; a second slider and a second slide rail are provided between the second movable frame 38 and the second fixed seat 40, the second movable frame 38 is reciprocally slidably arranged on the second fixed seat 40 through the second slider and the second slide rail, the first fixed seat 39 is provided with a first lifting screw 41 threadedly connected to the first lifting frame 35, the second fixed seat 40 is provided with a second lifting screw 42 threadedly connected to the second lifting frame 36, the first fixed seat 39 is provided with a first transmission seat 43, the second fixed seat 40 is provided with a second transmission seat 44, the first lifting screw 41 is inserted into the first transmission seat 43, the second lifting screw 42 is inserted into the second transmission seat 44, a first synchronization rod 45 is provided between the first lifting screw 41 and the second lifting screw 42 and transversely penetrates and is inserted into the first transmission seat 43 and the second transmission seat 44, first engaging teeth and second engaging teeth are respectively provided on portions where the first lifting screw 41 and the first synchronization rod 45 are inserted into the first transmission seat 43, and the first lifting screw 41 and the first synchronization rod 45 are drivingly connected through the first engaging teeth and the second engaging teeth; third engaging teeth and fourth engaging teeth are respectively provided on portions where the second lifting screw 42 and the first synchronization rod 45 are inserted into the second transmission seat 44, and the second lifting screw 42 and the first synchronization rod 45 are drivingly connected through the third engaging teeth and the fourth engaging teeth; one end of the first synchronization rod 45 is provided with a first adjustment handwheel 46 or a first reducer 47, and a first motor 48 drivingly connected to the first reducer 47; and the first adjustment handwheel 46 or the first motor 48 drives the first synchronization rod 45 to rotate, the first synchronization rod 45 simultaneously drives the first lifting screw 41 and the second lifting screw 42 to correspondingly rotate on first nut fixing seats 49 of the respective transmission seats, so that the first lifting screw 41 and the second lifting screw 42 rotate simultaneously, the first lifting frame 35 and the second lifting frame 36 move vertically along the lifting screws through screw transmission, and the first lifting frame 35 and the second lifting frame 36 cause the corresponding movable frames to move along the corresponding fixed seats, so that the first lamp housing 7 or the second lamp housing 9 is arranged to move vertically on the curing chamber 2, thereby adjusting the vertical spacing between the pre-curing lamp device 3 or the final curing lamp device 4 and the workpiece.
The skin-feel matte preparation device is a 3D skin-feel matte preparation device; the pre-curing lamp device 3 includes an upper pre-curing lamp device 15 and a lower pre-curing lamp device 16 that are vertically spaced; irradiation directions of the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 are opposed to each other; and the conveyor device 1 is located between the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16, so that light from the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 is irradiated onto the workpiece.
Each of the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 includes a third lamp housing 17 and a third reflective member 18 arranged at a bottom opening of an inner cavity of the third lamp housing 17; the third reflective member 18 includes a third inclined reflective surface 19 and a fourth inclined reflective surface 20; a spacing between the third inclined reflective surface 19 and the fourth inclined reflective surface 20 gradually increases along a direction in which the pre-curing lamp device 3 irradiates the workpiece; the third inclined reflective surface 19 and the fourth inclined reflective surface 20 are both provided with a second wave scattering segment 21 configured to fix the LED curing lamp 5; the second wave scattering segment 21 includes a plurality of inclined surface reflection blocks 26 arranged in an undulating manner; an LED lamp bead, an LED rigid strip, or an LED flexible strip is fixed on each of the inclined surfaces; the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on the second wave scattering segment 21 by adhesion or fasteners; and light generated by the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 is reflected at a plurality of different angles by the third inclined reflective surface 19, the fourth inclined reflective surface 20, and the second wave scattering segment 21 and irradiated onto the workpiece, to pre-cure the UV skin-feel matte paint on five surfaces of the workpiece.
Wherein the five surfaces of the workpiece include an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces.
The aforementioned upper surface, the front side surface, the rear side surface, the left side surface, and the right side surface that are irregularly concave-convex profiled surfaces are shown in Fig. 26 or Fig. 27.
The final curing lamp device 4 of the 3D skin-feel matte preparation device includes an upper final curing lamp device 22 and a lower final curing lamp device 23 that are vertically spaced; irradiation directions of the upper final curing lamp device 22 and the lower final curing lamp device 23 are opposed to each other; and the conveyor device 1 is located between the upper final curing lamp device 22 and the lower final curing lamp device 23, so that light from the upper final curing lamp device 22 and the lower final curing lamp device 23 is irradiated onto the workpiece.
Each of the upper final curing lamp device 22 and the lower final curing lamp device 23 includes a fourth lamp housing 24, a fourth reflective member 25 arranged at a bottom opening of an inner cavity of the fourth lamp housing 24, and a skin-feel matte curing lamp 6 located below the fourth reflective member 25; a wavelength of the skin-feel matte curing lamp 6 is 254 nm; the fourth reflective member 25 includes a fifth inclined reflective surface 27 and a sixth inclined reflective surface 28; the skin-feel matte curing lamp 6 is provided between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28; two ends of the skin-feel matte curing lamp 6 are respectively fixed on second end plates 29 of the fourth lamp housing 24; a spacing between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 gradually increases along a direction in which the skin-feel matte curing lamp 6 irradiates the workpiece; a plurality of refraction blocks 30 are provided above a top of the skin-feel matte curing lamp 6 between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28; one end of each of two adjacent refraction blocks 30 of the plurality of refraction blocks 30 is connected to each other, or the two adjacent refraction blocks 30 of the plurality of refraction blocks 30 are arranged at intervals; the plurality of refraction blocks 30 constitute a refraction segment of the fourth reflective member 25; and light generated by the skin-feel matte curing lamp 6 is reflected at a plurality of different angles by the fifth inclined reflective surface 27, the sixth inclined reflective surface 28, and the plurality of refraction blocks 30 and irradiated onto the workpiece, to finally cure the UV skin-feel matte paint on the five surfaces of the workpiece.
Wherein the five surfaces of the workpiece include an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces.
The aforementioned upper surface, the front side surface, the rear side surface, the left side surface, and the right side surface that are irregularly concave-convex profiled surfaces are shown in Fig. 26 or Fig. 27.
In this embodiment, the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 are each provided with folded edges. The opening of the fourth lamp housing 24 is provided with support edges corresponding to the folded edges. The folded edges of the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 are correspondingly supported on the respective support edges, thereby fixing the fourth reflective member 25 within the fourth lamp housing 24.
The third lamp housing 17 of each of the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 is provided with a third inner cavity configured to mount the third reflective member 18; two sides of the third reflective member 18 are respectively fixed on inner side walls of the third inner cavity; a bottom of the third lamp housing 17 is provided with a third opening; the third opening forms a third clearance opening for the LED curing lamp 5 to irradiate onto the workpiece; two ends of the third opening of the third lamp housing 17 are each provided with two inclined light expansion blocks 50; a spacing between the two inclined light expansion blocks 50 gradually increases toward a direction in which the LED curing lamp 5 irradiates; and light emitted by the LED curing lamp 5 forms inclined diffuse irradiation along left and right sides of the third opening of the third lamp housing 17 through the third inclined reflective surface 19, the fourth inclined reflective surface 20, and the inclined light expansion blocks 50.
This embodiment utilizes the cooperation between the inclined light expansion blocks 50 and the reflective surfaces, and the cooperation between the refraction blocks 30 and the reflective surfaces, to enable the light emitted by the curing lamp during operation to be reflected and refracted in different and mutually perpendicular directions. This effectively increases the irradiation area of the light. Furthermore, a portion of the UV light can be directly irradiated without requiring reflection or refraction. Consequently, the curing lamp achieves omnidirectional diffuse irradiation, thereby increasing the irradiation angle and range of the curing lamp. This thus shortens the curing time of the coating material on the workpiece surface and improves production efficiency, while also ensuring a uniform curing effect across all positions of the workpiece surface coating, thereby enhancing the quality of the cured workpiece coating.
The fourth lamp housing 24 of each of the upper final curing lamp device 22 and the lower final curing lamp device 23 is provided with a fourth inner cavity configured to mount the fourth reflective member 25 and the skin-feel matte curing lamp 6; a bottom of the fourth lamp housing 24 is provided with a fourth opening; the fourth opening forms a fourth clearance opening for the skin-feel matte curing lamp 6 to irradiate onto the workpiece; the fourth lamp housing 24 is provided with second shielding blocks 51 respectively corresponding to the two ends of the skin-feel matte curing lamp 6; the fourth lamp housing 24 is provided with third heat dissipation holes 53; the second shielding blocks 51 are provided with fourth heat dissipation holes 52; and a second heat dissipation cavity 54 communicating with the third heat dissipation holes 53 is formed between the fourth reflective member 25 and the fourth inner cavity.
In this embodiment, because the skin-feel matte curing lamp generates a substantial amount of heat during operation, a second heat dissipation cavity 54 communicating with the third heat dissipation holes 53 is formed between the fourth reflective member 25 and the fourth inner cavity. Heat is discharged externally through the second heat dissipation cavity 54 and the heat dissipation holes. Furthermore, an exhaust hood 75 is provided on the top of the curing chamber 2 and communicates with the inner portion of the curing chamber 2. The exhaust hood 75 is connected to an exhaust fan via a duct to expel heat from the curing chamber 2, preventing the internal temperature of the curing chamber 2 from becoming excessively high; this thereby reduces heat accumulation in the fourth lamp housing 24 and ensures stable operation of the skin-feel matte curing lamp 6.
The fourth reflective member 25 is provided with heat dissipation slots 55 communicating with the second heat dissipation cavity 54; each two adjacent refraction blocks 30 are respectively inclined toward front and rear ends of the fourth opening of the fourth lamp housing 24 and form front and rear end refraction zones 56; and light emitted by the skin-feel matte curing lamp 6 is refracted in an inclined manner toward the front and rear ends of the fourth opening of the fourth lamp housing 24 through the front and rear end refraction zones 56.
To facilitate the assembly of the fourth reflective member 25 and the refraction blocks 30, the top portions of the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 are further provided with mounting positions. A plurality of refraction blocks 30 are fixedly disposed on the fourth reflective member 25 via the mounting positions.
In this embodiment, the fourth reflective member 25 and the refraction blocks 30 are fixed together by welding, adhesive bonding, or fasteners. This structure is simple and provides secure assembly.
The plurality of refraction blocks 30 are arranged along the longitudinal direction of the fourth reflective member 25 in a zigzag pattern, with adjacent refraction blocks 30 connected at one end in an inclined manner. During production, the plurality of refraction blocks 30 are formed and fixed integrally by welding or stamping. This structure is simple, facilitates production, and also avoids the waste resulting from UV light escaping through gaps between refraction blocks.
A reflection angle B is formed between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28. A refraction angle C is formed between adjacent refraction blocks 30. The reflection angle B and the refraction angle C may be equal, or the reflection angle B may be greater than or less than the refraction angle C.
In this embodiment, the reflection angle B is equal to the refraction angle C. This ensures that the light energy emitted from the left and right sides and the front and rear ends of the fourth opening of the fourth lamp housing 24 is uniform, guaranteeing that each position of the coating material on the workpiece surface receives irradiation from light having the same energy, thereby achieving a consistent curing effect of the coating material.
The fourth lamp housing 24 of the upper final curing lamp device 22 is arranged in an inclined manner above the conveyor device 1, an inclination line of the fourth lamp housing 24 and a conveying line of the conveyor device 1 form an inclination angle A, and the inclination angle A has an angle of 30-80 degrees; and the upper final curing lamp device 22 and the lower final curing lamp device 23 are arranged in an upper-lower staggered manner, and a workpiece irradiation coverage zone is formed between the staggered upper final curing lamp device 22 and the lower final curing lamp device 23.
Two ends of the third lamp housing 17 of the lower pre-curing lamp device 16 and/or the fourth lamp housing 24 of the lower final curing lamp device 23 are respectively provided with connecting blocks 57; the third lamp housing 17 of the lower pre-curing lamp device 16 and/or the fourth lamp housing 24 of the lower final curing lamp device 23 is detachably mounted on a fixed side plate of the conveyor device 1 or the curing chamber 2 through the connecting blocks 57; and the third lamp housing 17 of the lower pre-curing lamp device 16 and/or the fourth lamp housing 24 of the lower final curing lamp device 23 is configured to adjust fixed positions of the third lamp housing 17 and/or the fourth lamp housing 24 on the curing chamber 2 through the connecting blocks 57.
In this embodiment, each of the connecting blocks 57 is L-shaped. A bottom of each of the connecting blocks 57 is provided with an elongated hole. The left-right position is adjustable by tightening or loosening fasteners between the elongated hole and a fixed hole provided in the bottom of the third lamp housing 17 or the fourth lamp housing 24, to accommodate the assembly of lamp housings having different lengths. A side portion of each of the connecting blocks 57 is provided with a connection hole. The up-down position is adjustable by tightening or loosening fasteners between the connection hole and a bar-shaped hole provided on a fixed side plate of the conveyor device 1 or the curing chamber 2. This configuration enables the adjustment of the fixed position of the lower pre-curing lamp device 16 and the lower final curing lamp device 23 on the curing chamber 2.
Two ends of the third lamp housing 17 of the upper pre-curing lamp device 15 or the fourth lamp housing 24 of the upper final curing lamp device 22 are respectively fixed on a third lifting frame 58 and a fourth lifting frame 59, the third lifting frame 58 is slidably arranged on a first fixed frame 60, and the fourth lifting frame 59 is slidably arranged on a second fixed frame 61; a third slider and a third slide rail are provided between the third lifting frame 58 and the first fixed frame 60, and the third lifting frame 58 is reciprocally slidably arranged on the first fixed frame 60 through the third slider and the third slide rail; a fourth slider and a fourth slide rail are provided between the fourth lifting frame 59 and the second fixed frame 61, the fourth lifting frame 59 is reciprocally slidably arranged on the second fixed frame 61 through the fourth slider and the fourth slide rail, and the first fixed frame 60 is provided with a first support plate seat 62 for receiving a third lifting screw 63; the third lifting screw 63 is inserted into the first support plate seat 62 and threadedly connected to the third lifting frame 58; and the second fixed frame 61 is provided with a second support plate seat 65 for receiving a fourth lifting screw 64, and the fourth lifting screw 64 is inserted into the second support plate seat 65 and threadedly connected to the fourth lifting frame 59.
The first support plate seat 62 is provided with a third transmission seat 66, the second support plate seat 65 is provided with a fourth transmission seat 67, the third lifting screw 63 is inserted into the third transmission seat 66, the fourth lifting screw 64 is inserted into the fourth transmission seat 67, a second synchronization rod 68 is provided between the third lifting screw 63 and the fourth lifting screw 64 and transversely penetrates and is inserted into the fourth lifting screw 64 and the fourth transmission seat 67, fifth engaging teeth and sixth engaging teeth are respectively provided on portions where the third lifting screw 63 and the second synchronization rod 68 are inserted into the third transmission seat 66, and the third lifting screw 63 and the second synchronization rod 68 are drivingly connected through the fifth engaging teeth and the sixth engaging teeth; seventh engaging teeth and eighth engaging teeth are respectively provided on portions where the fourth lifting screw 64 and the second synchronization rod 68 are inserted into the fourth transmission seat 67, and the fourth lifting screw 64 and the second synchronization rod 68 are drivingly connected through the seventh engaging teeth and the eighth engaging teeth; one end of the second synchronization rod 68 is provided with a second adjustment handwheel 69 or a second reducer 70, and a second motor 71 drivingly connected to the second reducer 70; and the second adjustment handwheel 69 or the second motor 71 drives the second synchronization rod 68 to rotate, the second synchronization rod 68 simultaneously drives the third lifting screw 63 and the fourth lifting screw 64 to correspondingly rotate on second nut fixing seats 72 of the respective transmission seats, so that the third lifting screw 63 and the fourth lifting screw 64 rotate simultaneously, the third lifting frame 58 and the fourth lifting frame 59 move vertically along the lifting screws through screw transmission, and the third lifting frame 58 and the fourth lifting frame 59 correspondingly slide on the respective fixed frames, thereby adjusting the vertical spacing between the pre-curing lamp device 3 or the final curing lamp device 4 and the workpiece.
The conveyor device 1 includes a plurality of conveying rollers 74 rotatably arranged on the machine frame 73, each of the conveying rollers 74 is provided with a gear at one end, the plurality of conveying rollers 74 are drivingly connected through gears and chains, and one of the conveying rollers 74 is provided with a driving motor at one end. The driving motor drives the plurality of conveying rollers 74 to rotate synchronously through transmission structures such as gears and chains.
The above describes the preferred embodiments of the present invention, showing and describing the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited by the above embodiments. The above embodiments and the description in the specification only illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements. These changes and improvements fall within the scope of the claimed present invention. The protection scope of the present invention is defined by the appended claims and their equivalents.

Claims

A skin-feel matte preparation process, characterized in that: a light source with a wavelength of 250-260 nm is used to irradiate a workpiece that is roller-coated or spray-coated with an ultraviolet (UV) skin-feel matte paint, such that a surface layer of a UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving a skin-feel and matte effect on a paint surface of the workpiece.
The skin-feel matte preparation process according to claim 1, characterized in that: the skin-feel matte preparation process is further configured to selectively use a pre-curing device to pre-irradiate the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint according to preparation conditions of the skin-feel matte, such that the surface layer of the UV skin-feel matte paint film on the workpiece is pre-cured, to improve the skin-feel and matte effect on the paint surface of the workpiece, wherein the pre-curing device is a light emitting diode (LED) lamp or a gallium lamp;
wherein the pre-curing device is located in front of the light source with the wavelength of 250-260 nm, and the pre-curing device and the light source are arranged in one device, or are separately arranged in different devices and then cooperate with each other; and

after skin-feel matte curing, a post-curing process and a post-curing device are further required; the post-curing device is a UV curing device, and the UV curing device is configured to be separately arranged on an independent device, or is arranged as a module at a rear end of a skin-feel matte device; for planar skin-feel matte preparation, the UV curing device is arranged as a module at a rear end of a skin-feel matte curing device; and for 3D skin-feel matte preparation, the UV curing device is used as an independent device.
The skin-feel matte preparation process according to claim 1, characterized in that: the preparation process comprises the following steps:
a. manually, electrically, or pneumatically adjusting a vertical spacing between a conveying surface of a conveyor device (1) and a curing lamp group according to a thickness of the workpiece;

b. placing the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint on the conveyor device (1), and driving the workpiece to move towards a curing chamber (2) by the conveyor device (1);

c. driving the workpiece to enter the curing chamber (2) by the conveyor device (1), and first passing the workpiece through a pre-curing lamp device (3) on the curing chamber (2), wherein the pre-curing lamp device (3) comprises an LED curing lamp (5), and the LED curing lamp (5) irradiates the workpiece coated with the UV skin-feel matte paint such that the UV skin-feel matte paint is pre-cured, thereby achieving pre-curing of a bottom layer of the UV skin-feel matte paint on the workpiece;

d. driving the workpiece to continue moving by the conveyor device (1), and then passing the workpiece through a final curing lamp device (4) on the curing chamber (2) after the bottom layer of the UV skin-feel matte paint on the workpiece is pre-cured, wherein the final curing lamp device (4) comprises a skin-feel matte curing lamp (6) with a wavelength of 253-257 nm, and the skin-feel matte curing lamp (6) irradiates the UV skin-feel matte paint on the workpiece such that the surface layer of the UV skin-feel matte paint film contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece; and

e. driving the workpiece to continue moving and enter a conventional UV curing machine by the conveyor device (1) after the skin-feel and matte effect are formed on the UV skin-feel matte paint on the workpiece, and completely curing the UV skin-feel matte paint on the workpiece under irradiation of a mercury lamp.
The skin-feel matte preparation process according to claim 3, characterized in that: when the workpiece that is roller-coated or spray-coated with the UV skin-feel matte paint is on the conveyor device (1), the conveyor device (1) conveys the workpiece at a speed of 3-20 m/min; by adjusting a vertical spacing between the pre-curing lamp device (3) and the conveying surface of the conveyor device (1), a vertical spacing between the pre-curing lamp device (3) and the workpiece is thereby adjusted, so that the pre-curing lamp device (3) irradiates the workpiece with appropriate intensity of energy; by adjusting a vertical spacing between the final curing lamp device (4) and the conveying surface of the conveyor device (1), a vertical spacing between the final curing lamp device (4) and the workpiece is thereby adjusted, so that the final curing lamp device (4) irradiates the workpiece with appropriate intensity of energy; and when the energy irradiated onto the workpiece is appropriate, the surface layer of the UV skin-feel matte paint film on the workpiece contracts and forms a non-smooth and wrinkled surface, wherein the surface appears as a diffusely reflective paint surface on the workpiece, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect; and
the number of the pre-curing lamp device (3) and the final curing lamp device (4) is adjusted according to specifications and dimensions of the workpiece, wherein the pre-curing lamp device (3) and the final curing lamp device (4) are provided with reflective members configured to reflect irradiation angles of lamps; and during operation, light generated by the pre-curing lamp device (3) and the final curing lamp device (4) is reflected at a plurality of different angles through reflection walls of the reflective members and irradiated onto the workpiece, such that the UV skin-feel matte paint on the workpiece absorbs energy from the skin-feel matte curing lamp (6) with a wavelength of 253-257 nm and thereby contracts and forms a non-smooth and wrinkled surface, thereby achieving the skin-feel and matte effect on the paint surface of the workpiece, and a glossiness of the paint surface of the workpiece is in the range of 0.5-5.0 degrees, thereby achieving an extreme skin-feel and matte effect.
A skin-feel matte preparation device, comprising a conveyor device (1) for conveying a workpiece coated with a UV skin-feel matte paint to a curing chamber (2), characterized in that: the curing chamber (2) is provided with a pre-curing lamp device (3) and a final curing lamp device (4) arranged at intervals in a front-rear direction; and irradiation surfaces of the pre-curing lamp device (3) and the final curing lamp device (4) are located above the conveyor device (1), so that light generated by the pre-curing lamp device (3) and the final curing lamp device (4) is irradiated onto the workpiece.
The skin-feel matte preparation device according to claim 5, characterized in that: the skin-feel matte preparation device is a UV skin-feel matte paint curing device for an upper surface of the workpiece, wherein the pre-curing lamp device (3) comprises a first lamp housing (7), a first reflective member (8) arranged at a bottom opening of an inner cavity of the first lamp housing (7), and an LED curing lamp (5) arranged on the first reflective member (8); the LED curing lamp (5) is an LED lamp bead, an LED rigid strip, or an LED flexible strip; and the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on a reflection plane of the first reflective member (8) by adhesion or fasteners;
the final curing lamp device (4) of the UV skin-feel matte paint curing device for the upper surface of the workpiece comprises a second lamp housing (9), a second reflective member (10) arranged at a bottom opening of an inner cavity of the second lamp housing (9), and a skin-feel matte curing lamp (6) located below the second reflective member (10); a wavelength of the skin-feel matte curing lamp (6) is 254 nm; two ends of the skin-feel matte curing lamp (6) are respectively fixed on first end plates (11) of the second lamp housing (9); the second reflective member (10) comprises a first inclined reflective surface (12) and a second inclined reflective surface (13); the skin-feel matte curing lamp (6) is a lamp tube and is located between the first inclined reflective surface (12) and the second inclined reflective surface (13); a spacing between the first inclined reflective surface (12) and the second inclined reflective surface (13) gradually increases along a direction in which the skin-feel matte curing lamp (6) irradiates the workpiece; a first wave scattering segment (14) arranged in an undulating manner is provided between the first inclined reflective surface (12) and the second inclined reflective surface (13); and light generated by the skin-feel matte curing lamp (6) is reflected at a plurality of different angles by the first inclined reflective surface (12), the first wave scattering segment (14), and the second inclined reflective surface (13) and irradiated onto the workpiece, so that a light irradiation range of the skin-feel matte curing lamp (6) completely covers a paint surface of the upper surface of the workpiece, to cure the UV skin-feel matte paint on the upper surface of the workpiece, wherein the upper surface is planar or an irregularly concave-convex profiled surface;

the first lamp housing (7) is provided with a first inner cavity configured to mount the first reflective member (8), two sides of the first reflective member (8) are respectively fixed on inner side walls of the first inner cavity, a bottom of the first lamp housing (7) is provided with a first opening, and the first opening forms a first clearance opening for the LED curing lamp (5) to irradiate onto the workpiece; and

the second lamp housing (9) is provided with first heat dissipation holes (31), the second lamp housing (9) is provided with a second inner cavity configured to mount the second reflective member (10) and the skin-feel matte curing lamp (6), a bottom of the second lamp housing (9) is provided with a second opening, and the second opening forms a second clearance opening for the skin-feel matte curing lamp (6) to irradiate onto the workpiece; and the second lamp housing (9) is provided with first shielding blocks (32) respectively corresponding to the two ends of the skin-feel matte curing lamp (6), the first shielding blocks (32) are provided with second heat dissipation holes (33), and a first heat dissipation cavity (34) communicating with the first heat dissipation holes (31) is formed between the first wave scattering segment (14) of the second reflective member (10) and the second inner cavity.
The skin-feel matte preparation device according to claim 6, characterized in that: two ends of the first lamp housing (7) or the second lamp housing (9) are respectively fixed on a first lifting frame (35) and a second lifting frame (36), the first lifting frame (35) is fixedly arranged on a first movable frame (37), and the second lifting frame (36) is fixedly arranged on a second movable frame (38); the curing chamber (2) is provided with a first fixed seat (39) corresponding to the first movable frame (37), the curing chamber (2) is provided with a second fixed seat (40) corresponding to the second movable frame (38), a first slider and a first slide rail are provided between the first movable frame (37) and the first fixed seat (39), and the first movable frame (37) is reciprocally slidably arranged on the first fixed seat (39) through the first slider and the first slide rail; a second slider and a second slide rail are provided between the second movable frame (38) and the second fixed seat (40), the second movable frame (38) is reciprocally slidably arranged on the second fixed seat (40) through the second slider and the second slide rail, the first fixed seat (39) is provided with a first lifting screw (41) threadedly connected to the first lifting frame (35), the second fixed seat (40) is provided with a second lifting screw (42) threadedly connected to the second lifting frame (36), the first fixed seat (39) is provided with a first transmission seat (43), the second fixed seat (40) is provided with a second transmission seat (44), the first lifting screw (41) is inserted into the first transmission seat (43), the second lifting screw (42) is inserted into the second transmission seat (44), a first synchronization rod (45) is provided between the first lifting screw (41) and the second lifting screw (42) and transversely penetrates and is inserted into the first transmission seat (43) and the second transmission seat (44), first engaging teeth and second engaging teeth are respectively provided on portions where the first lifting screw (41) and the first synchronization rod (45) are inserted into the first transmission seat (43), and the first lifting screw (41) and the first synchronization rod (45) are drivingly connected through the first engaging teeth and the second engaging teeth; third engaging teeth and fourth engaging teeth are respectively provided on portions where the second lifting screw (42) and the first synchronization rod (45) are inserted into the second transmission seat (44), and the second lifting screw (42) and the first synchronization rod (45) are drivingly connected through the third engaging teeth and the fourth engaging teeth; one end of the first synchronization rod (45) is provided with a first adjustment handwheel (46) or a first reducer (47), and a first motor (48) drivingly connected to the first reducer (47); and the first adjustment handwheel (46) or the first motor (48) drives the first synchronization rod (45) to rotate, the first synchronization rod (45) simultaneously drives the first lifting screw (41) and the second lifting screw (42) to correspondingly rotate on first nut fixing seats (49) of the respective transmission seats, so that the first lifting screw (41) and the second lifting screw (42) rotate simultaneously, the first lifting frame (35) and the second lifting frame (36) move vertically along the lifting screws through screw transmission, and the first lifting frame (35) and the second lifting frame (36) cause the corresponding movable frames to move along the corresponding fixed seats, so that the first lamp housing (7) or the second lamp housing (9) is arranged to move vertically on the curing chamber (2), thereby adjusting the vertical spacing between the pre-curing lamp device (3) or the final curing lamp device (4) and the workpiece.
The skin-feel matte preparation device according to claim 5, characterized in that: the skin-feel matte preparation device is a 3D skin-feel matte preparation device; the pre-curing lamp device (3) comprises an upper pre-curing lamp device (15) and a lower pre-curing lamp device (16) that are vertically spaced; irradiation directions of the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) are opposed to each other; and the conveyor device (1) is located between the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16), so that light from the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) is irradiated onto the workpiece;
each of the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) comprises a third lamp housing (17) and a third reflective member (18) arranged at a bottom opening of an inner cavity of the third lamp housing (17); the third reflective member (18) comprises a third inclined reflective surface (19) and a fourth inclined reflective surface (20); a spacing between the third inclined reflective surface (19) and the fourth inclined reflective surface (20) gradually increases along a direction in which the pre-curing lamp device (3) irradiates the workpiece; the third inclined reflective surface (19) and the fourth inclined reflective surface (20) are both provided with a second wave scattering segment (21) configured to fix the LED curing lamp (5); the second wave scattering segment (21) comprises a plurality of inclined surface reflection blocks (26) arranged in an undulating manner; an LED lamp bead, an LED rigid strip, or an LED flexible strip is fixed on each of the inclined surfaces; the LED lamp bead, the LED rigid strip, or the LED flexible strip is fixed on the second wave scattering segment (21) by adhesion or fasteners; and light generated by the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) is reflected at a plurality of different angles by the third inclined reflective surface (19), the fourth inclined reflective surface (20), and the second wave scattering segment (21) and irradiated onto the workpiece, to pre-cure the UV skin-feel matte paint on five surfaces of the workpiece;

wherein the five surfaces of the workpiece comprise an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces;

the final curing lamp device (4) of the 3D skin-feel matte preparation device comprises an upper final curing lamp device (22) and a lower final curing lamp device (23) that are vertically spaced; irradiation directions of the upper final curing lamp device (22) and the lower final curing lamp device (23) are opposed to each other; and the conveyor device (1) is located between the upper final curing lamp device (22) and the lower final curing lamp device (23), so that light from the upper final curing lamp device (22) and the lower final curing lamp device (23) is irradiated onto the workpiece;

each of the upper final curing lamp device (22) and the lower final curing lamp device (23) comprises a fourth lamp housing (24), a fourth reflective member (25) arranged at a bottom opening of an inner cavity of the fourth lamp housing (24), and a skin-feel matte curing lamp (6) located below the fourth reflective member (25); the fourth reflective member (25) comprises a fifth inclined reflective surface (27) and a sixth inclined reflective surface (28); the skin-feel matte curing lamp (6) is provided between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28); a wavelength of the skin-feel matte curing lamp (6) is 254 nm; two ends of the skin-feel matte curing lamp (6) are respectively fixed on second end plates (29) of the fourth lamp housing (24); a spacing between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28) gradually increases along a direction in which the skin-feel matte curing lamp (6) irradiates the workpiece; a plurality of refraction blocks (30) are provided above a top of the skin-feel matte curing lamp (6) between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28); one end of each of two adjacent refraction blocks (30) of the plurality of refraction blocks (30) is connected to each other, or the two adjacent refraction blocks (30) of the plurality of refraction blocks (30) are arranged at intervals; the plurality of refraction blocks (30) constitute a refraction segment of the fourth reflective member (25); and light generated by the skin-feel matte curing lamp (6) is reflected at a plurality of different angles by the fifth inclined reflective surface (27), the sixth inclined reflective surface (28), and the plurality of refraction blocks (30) and irradiated onto the workpiece, to finally cure the UV skin-feel matte paint on the five surfaces of the workpiece; and

wherein the five surfaces of the workpiece comprise an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are planar; or an upper surface, a front side surface, a rear side surface, a left side surface, and a right side surface that are irregularly concave-convex profiled surfaces.
The skin-feel matte preparation device according to claim 8, characterized in that: the third lamp housing (17) of each of the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) is provided with a third inner cavity configured to mount the third reflective member (18); two sides of the third reflective member (18) are respectively fixed on inner side walls of the third inner cavity; a bottom of the third lamp housing (17) is provided with a third opening; the third opening forms a third clearance opening for the LED curing lamp (5) to irradiate onto the workpiece; two ends of the third opening of the third lamp housing (17) are each provided with two inclined light expansion blocks (50); a spacing between the two inclined light expansion blocks (50) gradually increases toward a direction in which the LED curing lamp (5) irradiates; and light emitted by the LED curing lamp (5) forms inclined diffuse irradiation along left and right sides of the third opening of the third lamp housing (17) through the third inclined reflective surface (19), the fourth inclined reflective surface (20), and the inclined light expansion blocks (50);
the fourth lamp housing (24) of each of the upper final curing lamp device (22) and the lower final curing lamp device (23) is provided with a fourth inner cavity configured to mount the fourth reflective member (25) and the skin-feel matte curing lamp (6); a bottom of the fourth lamp housing (24) is provided with a fourth opening; the fourth opening forms a fourth clearance opening for the skin-feel matte curing lamp (6) to irradiate onto the workpiece; the fourth lamp housing (24) is provided with second shielding blocks (51) respectively corresponding to the two ends of the skin-feel matte curing lamp (6); the fourth lamp housing (24) is provided with third heat dissipation holes (53); the second shielding blocks (51) are provided with fourth heat dissipation holes (52); and a second heat dissipation cavity (54) communicating with the third heat dissipation holes (53) is formed between the fourth reflective member (25) and the fourth inner cavity;

the fourth reflective member (25) is provided with heat dissipation slots (55) communicating with the second heat dissipation cavity (54); each two adjacent refraction blocks (30) are respectively inclined toward front and rear ends of the fourth opening of the fourth lamp housing (24) and form front and rear end refraction zones (56); and light emitted by the skin-feel matte curing lamp (6) is refracted in an inclined manner toward the front and rear ends of the fourth opening of the fourth lamp housing (24) through the front and rear end refraction zones (56); and

the fourth lamp housing (24) of the upper final curing lamp device (22) is arranged in an inclined manner above the conveyor device (1), an inclination line of the fourth lamp housing (24) and a conveying line of the conveyor device (1) form an inclination angle A, and the inclination angle A has an angle of 30-80 degrees; and the upper final curing lamp device (22) and the lower final curing lamp device (23) are arranged in an upper-lower staggered manner, and a workpiece irradiation coverage zone is formed between the staggered upper final curing lamp device (22) and the lower final curing lamp device (23).
The skin-feel matte preparation device according to claim 9, characterized in that: two ends of the third lamp housing (17) of the lower pre-curing lamp device (16) and/or the fourth lamp housing (24) of the lower final curing lamp device (23) are respectively provided with connecting blocks (57); the third lamp housing (17) of the lower pre-curing lamp device (16) and/or the fourth lamp housing (24) of the lower final curing lamp device (23) is detachably mounted on a fixed side plate of the conveyor device (1) or the curing chamber (2) through the connecting blocks (57); and the third lamp housing (17) of the lower pre-curing lamp device (16) and/or the fourth lamp housing (24) of the lower final curing lamp device (23) is configured to adjust fixed positions of the third lamp housing (17) and/or the fourth lamp housing (24) on the curing chamber (2) through the connecting blocks (57);
two ends of the third lamp housing (17) of the upper pre-curing lamp device (15) or the fourth lamp housing (24) of the upper final curing lamp device (22) are respectively fixed on a third lifting frame (58) and a fourth lifting frame (59), the third lifting frame (58) is slidably arranged on a first fixed frame (60), and the fourth lifting frame (59) is slidably arranged on a second fixed frame (61); a third slider and a third slide rail are provided between the third lifting frame (58) and the first fixed frame (60), and the third lifting frame (58) is reciprocally slidably arranged on the first fixed frame (60) through the third slider and the third slide rail; a fourth slider and a fourth slide rail are provided between the fourth lifting frame (59) and the second fixed frame (61), the fourth lifting frame (59) is reciprocally slidably arranged on the second fixed frame (61) through the fourth slider and the fourth slide rail, and the first fixed frame (60) is provided with a first support plate seat (62) for receiving a third lifting screw (63); the third lifting screw (63) is inserted into the first support plate seat (62) and threadedly connected to the third lifting frame (58); and the second fixed frame (61) is provided with a second support plate seat (65) for receiving a fourth lifting screw (64), and the fourth lifting screw (64) is inserted into the second support plate seat (65) and threadedly connected to the fourth lifting frame (59); and

the first support plate seat (62) is provided with a third transmission seat (66), the second support plate seat (65) is provided with a fourth transmission seat (67), the third lifting screw (63) is inserted into the third transmission seat (66), the fourth lifting screw (64) is inserted into the fourth transmission seat (67), a second synchronization rod (68) is provided between the third lifting screw (63) and the fourth lifting screw (64) and transversely penetrates and is inserted into the fourth lifting screw (64) and the fourth transmission seat (67), fifth engaging teeth and sixth engaging teeth are respectively provided on portions where the third lifting screw (63) and the second synchronization rod (68) are inserted into the third transmission seat (66), and the third lifting screw (63) and the second synchronization rod (68) are drivingly connected through the fifth engaging teeth and the sixth engaging teeth; seventh engaging teeth and eighth engaging teeth are respectively provided on portions where the fourth lifting screw (64) and the second synchronization rod (68) are inserted into the fourth transmission seat (67), and the fourth lifting screw (64) and the second synchronization rod (68) are drivingly connected through the seventh engaging teeth and the eighth engaging teeth; one end of the second synchronization rod (68) is provided with a second adjustment handwheel (69) or a second reducer (70), and a second motor (71) drivingly connected to the second reducer (70); and the second adjustment handwheel (69) or the second motor (71) drives the second synchronization rod (68) to rotate, the second synchronization rod (68) simultaneously drives the third lifting screw (63) and the fourth lifting screw (64) to correspondingly rotate on second nut fixing seats (72) of the respective transmission seats, so that the third lifting screw (63) and the fourth lifting screw (64) rotate simultaneously, the third lifting frame (58) and the fourth lifting frame (59) move vertically along the lifting screws through screw transmission, and the third lifting frame (58) and the fourth lifting frame (59) correspondingly slide on the respective fixed frames, thereby adjusting the vertical spacing between the pre-curing lamp device (3) or the final curing lamp device (4) and the workpiece.