Skin preparation process and equipment thereof

Abstract

The invention relates to a skin matte preparation process, which is characterized in that a pre-curing lamp device is used for carrying out primary curing on the paint surface of a workpiece coated with UV skin matte paint, a final curing lamp device is used for carrying out final thorough curing on the paint surface of the workpiece coated with the UV skin matte paint, and the final curing lamp device comprises a skin matte curing lamp with the wavelength of 253-257nm. And the matte curing lamp is used for irradiating the UV matte paint on the workpiece, so that the UV matte paint is shrunk to form an unsmooth paint surface, and the matte effect of the paint surface of the workpiece is achieved. According to the process, a skin curing lamp with the wavelength of 253-257 nm is adopted for irradiating UV skin matte paint on the working surface, the UV skin matte paint can be effectively shrunk on the surface of a workpiece, an unsmooth state is formed, the hand feeling is soft, the skin touch feeling is like that of a baby, meanwhile, the paint surface of the workpiece can achieve the extremely matte effect of 0.5-5.0 degrees, and the skin touch matte effect is remarkable.

Description

Technical Field

[0001] This invention relates to the field of paint curing technology, specifically a skin coating preparation process and its equipment. Background Technology

[0002] Chinese patent CN202120720678.2 discloses a device for generating a skin-feeling UV coating. It involves a conveying assembly on a frame for transporting sheet metal, with multiple UV excimer lamp assemblies positioned above the conveying assembly. When the sheet metal is transported on the conveying assembly, the skin-feeling UV coating absorbs the nano-ultraviolet light emitted by the UV excimer lamps, creating a skin-feeling effect. However, because the multiple UV excimer lamp assemblies are all positioned above the conveying assembly, the UV excimer lamps cannot irradiate the lower surface of the sheet metal, resulting in low efficiency.

[0003] The reflective effect is poor, and the skin feel is poor.

[0004] The claims state that the wavelength of the UV excimer lamp is 172-185nm, and nitrogen is required to achieve the skin-feel effect, resulting in high production costs and complex process structure.

[0005] Chinese invention patent No. 202211576034.6 discloses a UV curing machine; see appendix of that patent. Figure 3 With appendix Figure 4 It uses an arc-shaped reflective structure, which has fewer reflective surfaces and a smaller reflective area, resulting in a less than ideal curing effect.

[0006] Therefore, further improvements are needed. Summary of the Invention

[0007] The purpose of this invention is to provide a skin preparation process and equipment.

[0008] The objective of this invention is achieved as follows: A skin-like matte finish preparation process involves irradiating a workpiece coated with UV skin-like matte paint by roller coating or spraying with a light source of wavelength 250-260 nm. This causes the surface layer of the UV skin-like matte paint film on the workpiece to shrink, forming a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface when viewed from the workpiece, thereby achieving a skin-like and matte finish on the workpiece's paint surface.

[0009] One skin-like coating preparation process also employs a conventional UV curing machine to perform final overall irradiation on the workpiece coated or sprayed with UV skin-like coating, so that the surface layer of the UV skin-like coating on the workpiece is thoroughly cured.

[0010] In this setup, the conventional UV curing machine is located behind the 250-260 nm wavelength light source. The two can be set up in one device or in separate devices and then work together.

[0011] This UV coating preparation process can also selectively use a pre-curing device to pre-irradiate the workpiece coated with UV coating by roller or spray, depending on the preparation status of the UV coating, so as to pre-cur the surface layer of the UV coating film on the workpiece, thereby improving the skin feel and matte effect of the workpiece. The pre-curing device is an LED lamp or a gallium lamp.

[0012] The pre-curing device is located in front of the light source with a wavelength of 250-260 nm. The two can be set up in one device or set up separately in different devices and then cooperate with each other.

[0013] After the skin-like surface is cured, a post-curing process and a post-curing device are required. The post-curing device is a UV curing device. This UV curing device can be set up separately on an independent device, or it can be set as a module at the rear end of the skin-like surface device. For planar skin-like surface preparation, the UV curing device is set as a module at the rear end of the skin-like surface curing device. For 3D skin-like surface preparation, the UV curing device is used as an independent device.

[0014] To better control the skin tone effect, a pre-curing process and device are usually used; the pre-curing device can be an LED or a gallium lamp; the pre-curing device can be a stand-alone device or placed in front of the skin tone device; it is usually placed in front of the skin tone device. After the skin surface is cured, a post-curing process and equipment are required. The post-curing equipment is a UV curing device. This post-curing device can be a standalone device or a module placed at the back end of the skin surface equipment. Typically, for planar skin surface preparation, this post-curing device is placed at the back end of the skin surface curing device as a module. For 3D skin surface processes, a standalone UV curing device is used.

[0015] A skin preparation process, comprising the following steps: a. Adjust the vertical distance between the conveyor surface of the transmission device and the curing lamp group manually, electrically or pneumatically according to the thickness of the workpiece. b. Place the workpiece coated with UV skin-like paint by roller or spray on the conveyor device, and the conveyor device moves the workpiece towards the curing chamber. c. The conveying device carries the workpiece into the curing chamber. The workpiece first passes through the pre-curing lamp device on the curing chamber. The pre-curing lamp device includes LED curing lamps. The LED curing lamps irradiate the workpiece coated with UV skin-like paint and pre-cur the UV skin-like paint, thereby achieving pre-curing of the UV skin-like paint base layer on the workpiece. d. After the UV skin-like coating base layer on the workpiece is pre-cured, the conveying device drives the workpiece to continue moving. The workpiece then passes through the final curing lamp device on the curing chamber. The final curing lamp device includes skin-like curing lamps with a wavelength of 253-257nm. The skin-like curing lamps irradiate the UV skin-like coating on the workpiece, causing the surface of the UV skin-like coating film to shrink and form a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface when viewed from the workpiece, thereby achieving a skin-like and matte effect on the workpiece's paint surface. e. After the UV skin-like coating on the workpiece forms a skin-like, matte effect, the conveyor device continues to move the workpiece and enters a conventional UV curing machine, where the UV skin-like coating on the workpiece is completely cured under the irradiation of a mercury lamp.

[0016] When a workpiece coated with UV skin-like matte paint by roller or spray is on a conveyor, the conveyor speed is 3-20 m / min. By adjusting the vertical distance between the pre-curing lamp device and the conveyor surface, the vertical distance between the pre-curing lamp device and the workpiece is also adjusted, allowing the pre-curing lamp device to emit appropriate energy onto the workpiece. Similarly, by adjusting the vertical distance between the final curing lamp device and the conveyor surface, the vertical distance between the final curing lamp device and the workpiece is also adjusted, allowing the final curing lamp device to emit appropriate energy onto the workpiece. When the energy emitted onto the workpiece is appropriate, the surface layer of the UV skin-like matte paint film on the workpiece shrinks, forming a rough and wrinkled surface. This surface appears as a diffusely reflective paint surface, thus achieving a skin-like, matte finish on the workpiece. The gloss level can reach an extremely skin-like, matte effect of 0.5-5.0 degrees.

[0017] The number of pre-curing lamps and final curing lamps is adjusted according to the specifications and dimensions of the workpiece. The pre-curing lamps and final curing lamps are equipped with reflectors for the angle of the reflector. During operation, the light generated by the pre-curing lamps and final curing lamps is reflected at multiple different angles through the reflector wall of the reflector and irradiates the workpiece. This causes the UV skin-like coating on the workpiece to absorb the energy of the skin-like curing lamp with a wavelength of 253-257nm, resulting in shrinkage and the formation of a rough and wrinkled surface. This ultimately achieves a skin-like, matte effect on the workpiece's paint surface, even if the light sensitivity of the workpiece's paint surface is 0.5-5.0 degrees, resulting in an extremely skin-like, matte effect.

[0018] A skin-like coating preparation apparatus includes a conveying device for conveying a workpiece coated with UV skin-like coating to a curing chamber. The curing chamber is provided with a pre-curing lamp device and a final curing lamp device arranged at intervals. The irradiation surfaces of the pre-curing lamp device and the final curing lamp device are located above the conveying device so that the light generated by the pre-curing lamp device and the final curing lamp device irradiates the workpiece. The UV coating preparation equipment is a UV coating curing equipment for the upper surface of a workpiece. Its pre-curing lamp device includes a first lamp cover, a first reflector set at the bottom opening of the inner cavity of the first lamp cover, and an LED curing lamp set on the first reflector. The LED curing lamp is an LED bead, an LED strip, or an LED strip light. The LED bead, LED strip, or LED strip light is fixed on the reflective plane of the first reflector by adhesive or fasteners. The final curing lamp device of the UV skin-like coating curing equipment for the upper surface of the workpiece includes a second lamp cover, a second reflector disposed at the bottom opening of the inner cavity of the second lamp cover, and a skin-like curing lamp located below the second reflector. The wavelength of the skin-like curing lamp is 253-257nm, preferably a skin-like curing lamp 6 with a wavelength of 254nm. The two ends of the skin-like curing lamp are respectively fixed to the first end plate of the second lamp cover. The second reflector includes a first inclined reflective surface and a second inclined reflective surface. The skin-like curing lamp is a lamp tube located between the first inclined reflective surface and the second inclined reflective surface. The distance between the first inclined reflective surface and the second inclined reflective surface gradually increases along the direction of the skin-like curing lamp irradiating the workpiece. Furthermore, a first wave scattering section with undulating arrangement is provided between the first inclined reflective surface and the second inclined reflective surface. The light generated by the skin-like curing lamp is reflected at multiple different angles through the first inclined reflective surface, the first wave scattering section, and the second inclined reflective surface and irradiates the workpiece, so that the light irradiation range of the skin-like curing lamp completely covers the paint surface of the upper surface of the workpiece, so as to cure the UV skin-like coating on the upper surface of the workpiece, which is either flat or irregularly shaped.

[0019] The first lamp cover has a first inner cavity for installing the first reflector. The two sides of the first reflector are fixed on the inner sidewall of the first inner cavity. The bottom of the first lamp cover has a first opening, which forms a first clearance opening for the LED curing lamp to illuminate the workpiece. The second lamp cover is provided with a first heat dissipation hole, and the second lamp cover is provided with a second inner cavity for installing the second reflector and the skin-light curing lamp. The bottom of the second lamp cover is provided with a second opening, which forms a second clearance opening for the skin-light curing lamp to illuminate the workpiece. The second lamp cover is provided with a first shielding block at each end corresponding to the skin-light curing lamp. The first shielding block is provided with a second heat dissipation hole, and the first wave scattering section of the second reflector and the second inner cavity form a first heat dissipation cavity that communicates with the first heat dissipation hole.

[0020] The first or second lampshade is fixed at both ends to the first and second lifting frames, respectively. The first lifting frame is fixedly mounted on the first movable frame, and the second lifting frame is fixedly mounted on the second movable frame. A first fixed seat is provided in the curing chamber corresponding to the first movable frame, and a second fixed seat is provided in the curing chamber 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. The first movable frame is slidably mounted on the first fixed seat via 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 slidably mounted on the second fixed seat via the second slider and the second slide rail. A first lifting screw is threadedly connected to the first lifting frame on the first fixed seat, and a second lifting screw is threadedly connected to the second lifting frame on the second fixed seat. A first transmission seat is provided on the first fixed seat, and a second transmission seat is provided on the second fixed seat. The first lifting screw is inserted into the first transmission seat, and the second lifting screw is inserted into the second transmission seat. A first synchronizing rod is provided between the first lifting screw and the second lifting screw, horizontally penetrating and inserting into the first and second transmission seats. The first lifting screw and the first synchronizing rod... The first lifting screw and the first synchronizing rod are connected by a first meshing tooth and a second meshing tooth respectively at the part where the rod is inserted into the first transmission seat. The second lifting screw and the first synchronizing rod are connected by a third meshing tooth and a fourth meshing tooth respectively at the part where they are inserted into the second transmission seat. The second lifting screw and the first synchronizing rod are connected by a third meshing tooth and a fourth meshing tooth. The first synchronizing rod is equipped with a first adjusting handwheel or a first reducer and a first motor connected to the first reducer at one end. The first adjusting handwheel or the first motor drives the first synchronizing rod to rotate. The first synchronizing rod drives the first lifting screw and the second lifting screw to rotate on the first nut fixing seat of the corresponding transmission seat, so that the first lifting screw and the second lifting screw rotate simultaneously. The first lifting frame and the second lifting frame move up and down along the lifting screw through thread transmission. The movable frame of the first lifting frame and the second lifting frame moves along the corresponding fixed seat, so that the first lamp cover or the second lamp cover moves up and down on the curing chamber, thereby adjusting the vertical distance between the pre-curing lamp device or the final curing lamp device and the workpiece.

[0021] The skin-like preparation equipment is a 3D skin-like preparation equipment. Its pre-curing lamp device includes an upper pre-curing lamp device and a lower pre-curing lamp device arranged at an interval. The irradiation directions of the upper and lower pre-curing lamp devices are opposite to each other. The transmission device is located between the upper and lower pre-curing lamp devices so that the light generated by the upper and lower pre-curing lamp devices can irradiate the workpiece. Both the upper and lower pre-curing lamp devices include a third lampshade and a third reflector located at the bottom opening of the inner cavity of the third lampshade. The third reflector includes a third inclined reflective surface and a fourth inclined reflective surface. The distance between the third and fourth inclined reflective surfaces gradually increases along the direction in which the pre-curing lamp device illuminates the workpiece. Both the third and fourth inclined reflective surfaces are provided with a second wave scattering section for fixing the LED curing lamp. The second wave scattering section is composed of several inclined reflective blocks arranged in an undulating manner. Each inclined surface is fixed with an LED bead, LED strip, or LED strip light strip. The LED bead, LED strip, or LED strip light strip is fixed to the second wave scattering section by adhesive or fasteners. The light generated by the upper and lower pre-curing lamp devices is reflected at multiple different angles through the third inclined reflective surface, the fourth inclined reflective surface, and the second wave scattering section and irradiates the workpiece to pre-cur the UV skin-like coating on the five-dimensional surface of the workpiece. The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side. The final curing lamp device of the 3D skin preparation equipment includes an upper final curing lamp device and a lower final curing lamp device arranged at an interval between the upper and lower layers. The irradiation directions of the upper and lower final curing lamp devices are opposite to each other. A transmission device is located between the upper and lower final curing lamp devices so that the light from the upper and lower final curing lamp devices can irradiate the workpiece. Both the upper and lower final curing lamp devices include a fourth lamp cover, a fourth reflector located at the bottom opening of the fourth lamp cover's inner cavity, and a skin-tone curing lamp located below the fourth reflector. The fourth reflector includes a fifth and a sixth inclined reflective surface, with a skin-tone curing lamp positioned between them. The wavelength of the skin-tone curing lamp is 254nm. Both ends of the skin-tone curing lamp are fixed to the second end plate of the fourth lamp cover. The distance between the fifth and sixth inclined reflective surfaces gradually increases along the direction in which the skin-tone curing lamp illuminates the workpiece. Several refractive blocks are positioned above the top of the skin-tone curing lamp between the fifth and sixth inclined reflective surfaces. One end of two adjacent refractive blocks is connected to each other, or two adjacent refractive blocks are spaced apart. These refractive blocks constitute the refractive section of the fourth reflector. The light generated by the skin-tone curing lamp is reflected at multiple different angles through the fifth and sixth inclined reflective surfaces and the several refractive blocks, illuminating the workpiece to perform final curing of the UV skin-tone coating on the five-dimensional surface of the workpiece. The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side.

[0022] The upper and lower pre-curing lamp devices have a third inner cavity on their third lamp covers for installing a third reflector. The third reflector is fixed on the inner wall of the third inner cavity on both sides. The bottom of the third lamp cover has a third opening, which forms a third clearance opening for the LED curing lamp to illuminate the workpiece. Two inclined light-expanding blocks are provided at both ends of the third opening of the third lamp cover. The distance between the two inclined light-expanding blocks gradually increases in the direction of the LED curing lamp. The light emitted by the LED curing lamp is diffused along the left and right sides of the third opening of the third lamp cover through the third inclined reflector, the fourth inclined reflector, and the inclined light-expanding blocks to form an inclined diffusion illumination. The upper and lower final curing lamp devices have a fourth lamp cover with a fourth inner cavity for mounting a fourth reflector and a skin-light curing lamp. The bottom of the fourth lamp cover has a fourth opening, which forms a fourth clearance opening for the skin-light curing lamp to illuminate the workpiece. The fourth lamp cover has a second blocking block at each end corresponding to the skin-light curing lamp. The fourth lamp cover has a third heat dissipation hole, the second blocking block has a fourth heat dissipation hole, and a second heat dissipation cavity that connects the fourth reflector and the fourth inner cavity is formed with the third heat dissipation hole. The fourth reflector is provided with a heat dissipation groove that connects to the second heat dissipation cavity; two adjacent refractive blocks are respectively tilted toward the front and rear ends of the fourth opening of the fourth lamp cover and form a front and rear refractive area; the light emitted by the skin curing lamp is tilted and refracted toward the front and rear ends of the fourth opening of the fourth lamp cover through the front and rear refractive areas. The fourth lampshade of the upper-layer final curing lamp device is inclined and set above the conveying device. The inclined line of the fourth lampshade and the conveying line of the conveying device form an inclination angle A, which is 30-80 degrees. The upper-layer final curing lamp device and the lower-layer final curing lamp device are staggered vertically, and the staggered position between the upper-layer final curing lamp device and the lower-layer final curing lamp device forms a workpiece irradiation coverage area.

[0023] The third lampshade of the lower pre-curing lamp device and / or the fourth lampshade of the lower final curing lamp device are respectively provided with connecting blocks at both ends; the third lampshade of the lower pre-curing lamp device and / or the fourth lampshade of the lower final curing lamp device are respectively installed and removed from the fixed side plate of the transmission device or the curing chamber through the connecting blocks; and the fixed position of the third lampshade of the lower pre-curing lamp device and / or the fourth lampshade of the lower final curing lamp device on the curing chamber is adjusted by the connecting blocks. The third lampshade of the upper pre-curing lamp device or the fourth lampshade of the upper final curing lamp device are fixed at both ends on the third lifting frame and the fourth lifting frame, respectively. The third lifting frame is slidably mounted on the first fixed frame, and the fourth lifting frame is slidably mounted on the second fixed frame. A third slider and a third slide rail are provided between the third lifting frame and the first fixed frame. The third lifting frame is slidably mounted on the first fixed frame via 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 slidably mounted on the second fixed frame via the fourth slider and the fourth slide rail. A first support plate seat is provided on the first fixed frame for inserting the third lifting screw. The third lifting screw is inserted into the first support plate seat and threadedly connected to the third lifting frame. A second support plate seat is provided on the second fixed frame for inserting the fourth lifting screw. The fourth lifting screw is inserted into the second support plate seat and threadedly connected to the fourth lifting frame. A third transmission seat is provided on the first support plate, and a fourth transmission seat is provided on the second support plate. A third lifting screw is inserted into the third transmission seat, and a fourth lifting screw is inserted into the fourth transmission seat. A second synchronizing rod is provided between the third and fourth lifting screws, penetrating and inserting into both the fourth lifting screw and the fourth transmission seat. A fifth and a sixth meshing tooth are respectively provided on the portions of the third lifting screw and the second synchronizing rod inserted into the third transmission seat, and the third lifting screw and the second synchronizing rod are connected by the fifth and sixth meshing teeth. A seventh and an eighth meshing tooth are respectively provided on the portions of the fourth lifting screw and the second synchronizing rod inserted into the fourth transmission seat. The two parts are connected by a seventh meshing tooth and an eighth meshing tooth. The second synchronous rod is equipped with a second adjusting handwheel or a second reducer and a second motor connected to the second reducer. The second adjusting handwheel or the second motor drives the second synchronous rod to rotate. The second synchronous rod drives the third lifting screw and the fourth lifting screw to rotate on the second nut fixing seat of the corresponding transmission seat, so that the third lifting screw and the fourth lifting screw rotate at the same time. The third lifting frame and the fourth lifting frame move up and down along the lifting screw through thread transmission. The third lifting frame and the fourth lifting frame slide on the corresponding fixing frame, thereby adjusting the vertical distance between the pre-curing lamp device or the final curing lamp device and the workpiece.

[0024] The transmission device includes several conveying rollers rotatably mounted on a frame. Each conveying roller has a gear at one end. The several conveying rollers are connected by gears and chains for transmission. One of the conveying rollers has a drive motor at one end. The drive motor drives the several conveying rollers to rotate synchronously through transmission structures such as gears and chains.

[0025] The beneficial effects of this invention are as follows: A pre-curing lamp device is used to initially cure the paint surface of the workpiece coated with UV skin-like paint, and a final curing lamp device is used to finally and thoroughly cure the paint surface of the workpiece coated with UV skin-like paint.

[0026] Furthermore, the upper and lower pre-curing lamp devices, positioned vertically opposite each other, form a front-stage curing zone. This allows the workpiece on the conveyor to undergo initial curing of the UV-coated surface, including the upper, lower, and side surfaces. Subsequently, the upper final curing lamp devices, staggered vertically, and the two to five lower final curing lamp devices form a rear-stage curing zone. This allows the workpiece, having undergone initial curing of the UV-coated surface, to undergo further curing of the upper, lower, and side surfaces when it enters the rear-stage curing zone. This ensures uniform and effective curing of all paint surfaces on the workpiece, improving the curing quality of the paint on the board.

[0027] The upper pre-curing lamp device, lower pre-curing lamp device, upper final curing lamp device, and lower final curing lamp device can simultaneously irradiate the upper, lower, and side surfaces of the workpiece coated with UV skin-like paint. This allows the workpiece coated with UV skin-like paint to complete the curing of the paint at each location during a single transport process, ensuring curing quality while also improving curing efficiency.

[0028] By using only one horizontally arranged upper pre-curing lamp device and one horizontally arranged lower pre-curing lamp device facing each other, heat can be avoided from accumulating in the front-end light curing area while ensuring the curing effect of the workpiece coated with UV skin-like paint.

[0029] Two upper-layer final curing lamps are arranged at an angle, and two to five lower-layer final curing lamps are arranged horizontally at an angle. At the same time, the two upper-layer final curing lamps and the two to five lower-layer final curing lamps are staggered vertically. This effectively cures the workpiece coated with UV skin-like paint and also prevents heat from accumulating in the later-stage light curing area.

[0030] The two upper-layer final curing lamps are tilted, allowing them a sufficiently long travel distance during the conveying of workpieces coated with UV skin-tone paint to irradiate the paint on its surface. This enables the relatively small number of upper-layer final curing lamps to effectively cure the paint on the surface of workpieces coated with UV skin-tone paint, improving the curing quality of the paint on the surface of workpieces coated with UV skin-tone paint while also reducing production costs. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the process structure for preparing skin sub-substrate according to an embodiment of the present invention.

[0032] Figure 2 This is a three-dimensional structural schematic diagram of a UV skin-like coating curing device for the upper surface of a workpiece according to an embodiment of the present invention.

[0033] Figure 3 This is a three-dimensional cross-sectional structural diagram of a UV skin-like coating curing device for the upper surface of a workpiece according to an embodiment of the present invention.

[0034] Figure 4 This is a schematic diagram of the lifting structure of the pre-curing lamp device in a UV skin-like coating curing equipment for the upper surface of a workpiece according to an embodiment of the present invention.

[0035] Figure 5 This is a schematic diagram showing the assembly and disassembly of the pre-curing lamp device and lifting structure of a UV skin-like coating curing device for the upper surface of a workpiece according to an embodiment of the present invention.

[0036] Figure 6 This is a schematic diagram showing the assembly and disassembly of the final curing lamp device and lifting structure of a UV skin-like coating curing device for the upper surface of a workpiece according to an embodiment of the present invention.

[0037] Figure 7 The following is a schematic diagram of the three-dimensional cross-sectional structure of the final curing lamp device of a UV skin-like coating curing equipment for the upper surface of a workpiece according to an embodiment of the present invention.

[0038] Figure 8 This is a schematic diagram of the bottom structure of the final curing lamp device of a UV skin-like coating curing device for the upper surface of a workpiece according to an embodiment of the present invention.

[0039] Figure 9 This is a three-dimensional structural diagram of a 3D skin preparation device according to an embodiment of the present invention.

[0040] Figure 10 This is a schematic diagram of the planar cross-sectional structure of a 3D skin preparation device according to an embodiment of the present invention.

[0041] Figure 11 This is a schematic diagram of the cross-sectional structure of the pre-curing lamp device in a 3D skin preparation equipment according to an embodiment of the present invention.

[0042] Figure 12 This is a schematic diagram of the structure of a pre-curing lamp device for a 3D skin preparation equipment according to an embodiment of the present invention, which has undulating wave sections.

[0043] Figure 13 This is a three-dimensional structural diagram of the upper pre-curing lamp device, the upper final curing lamp device, and the transmission device of a 3D skin preparation device according to an embodiment of the present invention.

[0044] Figure 14 This is a schematic diagram of the assembly of the upper final curing lamp device and the lifting structure on a 3D skin preparation device according to an embodiment of the present invention.

[0045] Figure 15 This is a schematic diagram of the assembly of the upper pre-curing lamp device and the lifting structure of a 3D skin preparation device according to an embodiment of the present invention.

[0046] Figure 16 This is an exploded view of the assembly structure of the 3D skin-like preparation equipment, including the transfer device, upper pre-curing lamp device, lower pre-curing lamp device, upper final curing lamp device, and lower final curing lamp device, according to an embodiment of the present invention.

[0047] Figure 17 This is a schematic diagram of the structure of a 3D skin preparation device with an inclined upper final curing lamp device according to an embodiment of the present invention.

[0048] Figure 18 This is an exploded view of the assembly structure of the upper or lower final curing lamp device of the 3D skin preparation equipment according to an embodiment of the present invention.

[0049] Figure 19 This is a three-dimensional structural diagram of the final curing lamp device in a 3D skin preparation equipment according to an embodiment of the present invention.

[0050] Figure 20 This is a three-dimensional structural diagram of the final curing lamp device of a 3D skin preparation equipment according to an embodiment of the present invention.

[0051] Figure 21 This is a schematic diagram of the assembly and disassembly of the final curing lamp device in a 3D skin preparation equipment according to an embodiment of the present invention.

[0052] Figure 22 This is a schematic cross-sectional view of the final curing lamp device in a 3D skin preparation equipment according to an embodiment of the present invention.

[0053] Figure 23 This is a schematic diagram of the internal structure of the final curing lamp device in a 3D skin preparation equipment according to an embodiment of the present invention.

[0054] Figure 24 This is an exploded view of the assembly structure of the lower layer final curing lamp device and connecting block of a 3D skin preparation equipment according to an embodiment of the present invention.

[0055] Figure 25 This is a schematic diagram of the semi-cured effect of the paint coating on a workpiece according to an embodiment of the present invention.

[0056] Figure 26 This is a schematic diagram of a workpiece irregular surface structure according to an embodiment of the present invention.

[0057] Figure 27 This is a schematic diagram of another structure of the irregular surface of a workpiece according to an embodiment of the present invention. Detailed Implementation

[0058] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0059] See Figures 1-24A skin-like matte finish preparation process involves irradiating a workpiece coated with UV skin-like matte paint by roller coating or spraying with a light source of wavelength 250-260 nm. This causes the surface layer of the UV skin-like matte paint film on the workpiece to shrink, forming a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface when viewed from the workpiece, thus achieving a skin-like and matte finish on the workpiece's paint surface.

[0060] One skin-like coating preparation process also employs a conventional UV curing machine to perform final overall irradiation on the workpiece coated or sprayed with UV skin-like coating, so that the surface layer of the UV skin-like coating on the workpiece is thoroughly cured.

[0061] In this setup, the conventional UV curing machine is located behind the 250-260 nm wavelength light source. The two can be set up in one device or in separate devices and then work together.

[0062] This UV coating preparation process can also selectively use a pre-curing device to pre-irradiate the workpiece coated with UV coating by roller or spray, depending on the preparation status of the UV coating, so as to pre-cur the surface layer of the UV coating film on the workpiece, thereby improving the skin feel and matte effect of the workpiece. The pre-curing device is an LED lamp or a gallium lamp.

[0063] The pre-curing device is located in front of the light source with a wavelength of 250-260 nm. The two can be set up in one device or set up separately in different devices and then cooperate with each other.

[0064] In the preparation process of this product, a light source with a wavelength of 250-260 nm and a conventional UV curing machine must be used simultaneously. The pre-curing device can be selectively set and used, or it can be left unused, depending on the preparation situation.

[0065] In the preparation process of Benfuya, the pre-curing device, the light source with a wavelength of 250-260 nm, and the conventional UV curing machine are used simultaneously and arranged in sequence.

[0066] After the skin-like surface is cured, a post-curing process and a post-curing device are required. The post-curing device is a UV curing device. This UV curing device can be set up separately on an independent device, or it can be set as a module at the rear end of the skin-like surface device. For planar skin-like surface preparation, the UV curing device is set as a module at the rear end of the skin-like surface curing device. For 3D skin-like surface preparation, the UV curing device is used as an independent device.

[0067] That is, the pre-curing device, the conventional UV curing machine and the light source with a wavelength of 250-260 nm are integrated into the same production equipment.

[0068] Alternatively, the pre-curing device and / or conventional UV curing machine can be set up separately in different devices and then used in conjunction with each other.

[0069] That is, the pre-curing device is a single production equipment, the conventional UV curing machine is another single production equipment, and the light source with a wavelength of 250-260 nm is yet another single production equipment. The three production equipment are set up separately and then placed together.

[0070] The above-mentioned preparation process includes the following steps: a. Adjusting the vertical distance between the conveying surface of the transmission device and the curing lamp assembly manually, electrically, or pneumatically according to the thickness of the workpiece; b. The workpiece coated with UV skin-like paint by roller coating or spraying is located on the conveyor device 1, and the conveyor device 1 moves the workpiece towards the curing chamber 2. c. The conveying device 1 carries the workpiece into the curing chamber 2. The workpiece first passes through the pre-curing lamp device 3 on the curing chamber 2. The pre-curing lamp device 3 includes LED curing lamp 5. The LED curing lamp 5 irradiates the workpiece coated with UV skin-like paint and pre-cures the UV skin-like paint, thereby achieving pre-curing of the UV skin-like paint base layer on the workpiece. d. After the UV skin-like coating base layer on the workpiece is pre-cured, the conveying device 1 drives the workpiece to continue moving. The workpiece then passes through the final curing lamp device 4 on the curing chamber 2. The final curing lamp device 4 includes a skin-like curing lamp 6 with a wavelength of 253-257nm. The skin-like curing lamp 6 irradiates the UV skin-like coating on the workpiece, causing the surface of the UV skin-like coating film to shrink and form a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface on the workpiece, thereby achieving a skin-like and matte effect on the workpiece's paint surface. e. After the UV skin-like coating on the workpiece forms a skin-like, matte effect, the conveyor device 1 drives the workpiece to continue moving and enters a conventional UV curing machine, where the UV skin-like coating on the workpiece is completely cured under the irradiation of a mercury lamp.

[0071] When a workpiece coated with UV skin-like matte paint by roller coating or spray coating is on the conveyor device 1, the conveyor device 1 conveys the workpiece at a speed of 3-20 m / min. By adjusting the vertical distance between the pre-curing lamp device 3 and the conveying surface of the conveyor device 1, the vertical distance between the pre-curing lamp device 3 and the workpiece is also adjusted, so that the pre-curing lamp device 3 emits appropriate energy onto the workpiece. By adjusting the vertical distance between the final curing lamp device 4 and the conveying surface of the conveyor device 1, the vertical distance between the final curing lamp device 4 and the workpiece is also adjusted, so that the final curing lamp device 4 emits appropriate energy onto the workpiece. When the energy emitted onto the workpiece is appropriate, the surface layer of the UV skin-like matte paint film on the workpiece shrinks and forms a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface on the workpiece, thereby achieving a skin-like, matte effect on the workpiece paint surface. Its gloss can reach an extremely skin-like, matte effect of 0.5-5.0 degrees.

[0072] The number of pre-curing lamp device 3 and final curing lamp device 4 is adjusted according to the specifications and dimensions of the workpiece. The pre-curing lamp device 3 and final curing lamp device 4 are equipped with reflective elements for the irradiation angle of the reflective lamp. During operation, the light generated by the pre-curing lamp device 3 and final curing lamp device 4 is reflected at multiple different angles through the reflective wall of the reflective element and irradiates the workpiece. This causes the UV skin-like coating on the workpiece to absorb the energy of the skin-like curing lamp 6 with a wavelength of 253-257nm, resulting in shrinkage and the formation of a rough and wrinkled surface. This ultimately achieves a skin-like and matte effect on the workpiece's paint surface, even if the light sensitivity of the workpiece's paint surface is 0.5-5.0 degrees, resulting in an extremely skin-like and matte effect.

[0073] In this skin-like coating preparation process, the skin-like curing lamp is a lamp tube with a wavelength that can generate energy of 253-257nm. When it irradiates the UV skin-like coating on the workpiece, it causes the surface of the UV skin-like coating film to shrink and form a rough and wrinkled surface. The surface appears as a diffuse reflection paint surface when viewed from the workpiece. This paint surface feels soft to the touch, like the feel of a baby's skin, and has a light sensitivity of 0.5-5.0 degrees, which is an extremely skin-like feel. Therefore, it can ultimately and effectively achieve an extremely skin-like feel and matte effect on the workpiece's paint surface.

[0074] Among them, ultra-skin-feel and matte finishes, such as Figure 25 As shown.

[0075] A skin-like coating preparation device includes a conveying device 1 for conveying a workpiece coated with UV skin-like coating to a curing chamber 2, characterized in that: a pre-curing lamp device 3 and a final curing lamp device 4 are provided on the curing chamber 2 at a front-to-back interval; the irradiation surfaces of the pre-curing lamp device 3 and the final curing lamp device 4 are located above the conveying device 1 so that the light generated by the pre-curing lamp device 3 and the final curing lamp device 4 irradiates the workpiece. The UV coating preparation equipment is a UV coating curing equipment for the upper surface of a workpiece. Its pre-curing lamp device 3 includes a first lamp cover 7, a first reflector 8 set at the bottom opening of the inner cavity of the first lamp cover 7, and an LED curing lamp 5 set on the first reflector 8. The LED curing lamp 5 is an LED bead, an LED strip, or an LED strip light. The LED bead, LED strip, or LED strip light is fixed on the reflective plane of the first reflector 8 by adhesive or fasteners. The final curing lamp device 4 of the UV skin-tone coating curing equipment for the upper surface of the workpiece includes a second lamp cover 9, a second reflector 10 disposed at the bottom opening of the inner cavity of the second lamp cover 9, and a skin-tone curing lamp 6 located below the second reflector 10. The wavelength of the skin-tone curing lamp 6 is 253-257nm. The two ends of the skin-tone curing lamp 6 are respectively fixed on the first end plate 11 of the second lamp cover 9. The second reflector 10 includes a first inclined reflective surface 12 and a second inclined reflective surface 13. The skin-tone curing lamp 6 is a lamp tube located between the first inclined reflective surface 12 and the second inclined reflective surface 13. 2. The spacing between the second inclined reflective surfaces 13 gradually increases along the direction of the UV curing lamp 6 irradiating the workpiece; and a first wave scattering section 14 with undulating arrangement is provided between the first inclined reflective surface 12 and the second inclined reflective surface 13. The light generated by the UV curing lamp 6 is reflected at multiple different angles through the first inclined reflective surface 12, the first wave scattering section 14 and the second inclined reflective surface 13 and irradiates the workpiece, so that the light irradiation range of the UV curing lamp 6 completely covers the paint surface on the upper surface of the workpiece, so as to cure the UV paint on the upper surface of the workpiece which is a flat surface or an irregular undulating surface.

[0076] Specifically: the wavelength of the skin curing lamp 6 is 254nm.

[0077] 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 lampshade 9. A bent support edge is provided at the opening of the second lampshade 9 corresponding to the folded edge, and the folded edges of the first inclined reflective surface 12 and the second inclined reflective surface 13 are supported on the corresponding support edge.

[0078] In this embodiment, the end plate of each lampshade can be fixed to the lampshade with screws.

[0079] The first lamp cover 7 is provided with a first inner cavity for installing the first reflector 8. The two sides of the first reflector 8 are fixed on the inner sidewall of the first inner cavity respectively. The bottom of the first lamp cover 7 is provided with a first opening, which forms a first clearance opening for the LED curing lamp 5 to irradiate the workpiece. The second lamp cover 9 is provided with a first heat dissipation hole 31. The second lamp cover 9 is provided with a second inner cavity for installing the second reflector 10 and the skin curing lamp 6. The bottom of the second lamp cover 9 is provided with a second opening, which forms a second clearance opening for the skin curing lamp 6 to illuminate the workpiece. The second lamp cover 9 is provided with a first shielding block 32 at each end corresponding to the skin curing lamp 6. The first shielding block 32 is provided with a second heat dissipation hole 33. The first wave scattering section 14 of the second reflector 10 and the second inner cavity form a first heat dissipation cavity 34 that communicates with the first heat dissipation hole 31.

[0080] In this embodiment, since the Pfizer curing lamp generates a large amount of heat during operation, a first heat dissipation cavity 34 is formed between the first wave scattering section 14 of the second reflector 10 and the second inner cavity, which connects to the first heat dissipation hole 31. The heat is discharged outward through the first heat dissipation cavity 34 and the first heat dissipation hole 31. Moreover, an exhaust hood 75 is provided on the top of the curing chamber 2, which connects to the inside of the curing chamber 2. The exhaust hood 75 is connected to an exhaust fan through a pipe to discharge the heat inside the curing chamber 2 and prevent the temperature inside the curing chamber from becoming too high. This reduces the heat accumulation in the second lamp cover 9 and ensures that the Pfizer curing lamp 6 can work stably.

[0081] The first lampshade 7 or the second lampshade 9 is fixed at both ends to the first lifting frame 35 and the second lifting frame 36, respectively. The first lifting frame 35 is fixedly mounted on the first movable frame 37, and the second lifting frame 36 is fixedly mounted on the second movable frame 38. The curing chamber 2 is provided with a first fixed seat 39 corresponding to the first movable frame 37, and 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. The first movable frame 37 is reciprocally slidably mounted on the first fixed seat 39 via 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 frame 38 is reciprocally slidably mounted on the second fixed seat 40 via the second slider and the second slide rail. The first fixed seat 39 has a first lifting screw 41 threadedly connected to the first lifting frame 35, and the second fixed seat 40 has a second lifting screw 42 threadedly connected to the second lifting frame 36. The first fixed seat 39 has a first transmission seat 43, and the second fixed seat 40 has a second transmission seat 44. The first lifting screw 41 is inserted into the first transmission seat 43, and the second lifting screw 42 is inserted into the second transmission seat 44. A first synchronizing rod 45 is provided between the first lifting screw 41 and the second lifting screw 42, penetrating and inserting into both the first transmission seat 43 and the second transmission seat 44. The lifting screw 41 and the first synchronous rod 45 are respectively provided with a first meshing tooth and a second meshing tooth at the part where they are inserted into the first transmission seat 43. The first lifting screw 41 and the first synchronous rod 45 are connected by the first meshing tooth and the second meshing tooth. The second lifting screw 42 and the first synchronous rod 45 are respectively provided with a third meshing tooth and a fourth meshing tooth at the part where they are inserted into the second transmission seat 44. The second lifting screw 42 and the first synchronous rod 45 are connected by the third meshing tooth and the fourth meshing tooth. The first synchronous rod 45 is provided with a first adjusting handwheel 46 or a first reducer 47 and a first motor 48 connected to the first reducer 47 at one end. The handwheel 46 or the first motor 48 drives the first synchronous rod 45 to rotate. The first synchronous rod 45 simultaneously drives the first lifting screw 41 and the second lifting screw 42 to rotate on the first nut fixing seat 49 of the corresponding transmission seat, 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 up and down along the lifting screw through thread transmission, and the movable frame corresponding to the first lifting frame 35 and the second lifting frame 36 moves along the corresponding fixed seat, so that the first lamp cover 7 or the second lamp cover 9 moves up and down and is set on the curing chamber 2, thereby adjusting the vertical distance between the pre-curing lamp device 3 or the final curing lamp device 4 and the workpiece.

[0082] The skin-like preparation equipment is a 3D skin-like preparation equipment. Its pre-curing lamp device 3 includes an upper pre-curing lamp device 15 and a lower pre-curing lamp device 16 arranged at an interval. The upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 are arranged in opposite directions. The transmission device 1 is located between the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 so that the light from the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 can irradiate the workpiece. Both the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 include a third lamp cover 17 and a third reflector 18 disposed at the bottom opening of the inner cavity of the third lamp cover 17. The third reflector 18 includes a third inclined reflective surface 19 and a fourth inclined reflective surface 20. The spacing between the third inclined reflective surface 19 and the fourth inclined reflective surface 20 gradually increases along the direction of the pre-curing lamp device 3 irradiating the workpiece. The third inclined reflective surface 19 and the fourth inclined reflective surface 20 are each provided with a second wave scattering section 21 for fixing the LED curing lamp 5. The second wave scattering section 21 is composed of several The system consists of several inclined reflective blocks 26 arranged in an undulating manner, with LED beads, LED strips, or LED light strips fixed on each inclined surface; the LED beads, LED strips, or LED light strips are fixed to the second wave scattering section 21 by adhesive or fasteners; the light generated by the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 is reflected at multiple different angles through the third inclined reflective surface 19, the fourth inclined reflective surface 20, and the second wave scattering section 21 and irradiates the workpiece to pre-cur the UV skin coating on the five-dimensional surface of the workpiece; The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side. The aforementioned irregularly shaped upper surface, front side, rear side, left side, and right side, as shown... Figure 26 or Figure 27 As shown.

[0083] The final curing lamp device 4 of the 3D skin preparation equipment includes an upper final curing lamp device 22 and a lower final curing lamp device 23 arranged at an interval between the upper and lower layers. The irradiation directions of the upper final curing lamp device 22 and the lower final curing lamp device 23 are opposite to each other. The transmission device 1 is located between the upper final curing lamp device 22 and the lower final curing lamp device 23 so that the light generated by the upper final curing lamp device 22 and the lower final curing lamp device 23 irradiates the workpiece. Both the upper-layer final curing lamp device 22 and the lower-layer final curing lamp device 23 include a fourth lamp cover 24, a fourth reflector 25 disposed at the bottom opening of the inner cavity of the fourth lamp cover 24, and a skin-light curing lamp 6 located below the fourth reflector 25. The wavelength of the skin-light curing lamp 6 is 254nm. The fourth reflector 25 includes a fifth inclined reflective surface 27 and a sixth inclined reflective surface 28. The skin-light curing lamp 6 is disposed between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28. The two ends of the skin-light curing lamp 6 are respectively fixed to the second end plate 29 of the fourth lamp cover 24. The distance between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 is along the skin-light curing lamp. The direction of the light 6 irradiating the workpiece gradually increases; between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28, there are several refractive blocks 30 above the top of the skin-curing light 6. One end of two adjacent refractive blocks 30 are connected to each other, or two adjacent refractive blocks 30 are spaced apart; the several refractive blocks 30 constitute the refractive segment of the fourth reflector 25. The light generated by the skin-curing light 6 is reflected at multiple different angles through the fifth inclined reflective surface 27, the sixth inclined reflective surface 28, and the several refractive blocks 30 and irradiates the workpiece to perform terminal curing of the UV skin-curing paint on the five-dimensional surface of the workpiece; The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side.

[0084] The aforementioned irregularly shaped upper surface, front side, rear side, left side, and right side, as shown... Figure 26 or Figure 27 As shown.

[0085] In this embodiment, the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 are respectively provided with folded edges, and the opening of the fourth lamp cover 24 is provided with a support edge corresponding to the folded edge. The folded edges of the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 are respectively supported on the corresponding support edge, so that the fourth reflector 25 is fixed inside the fourth lamp cover 24.

[0086] The upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 have a third inner cavity on their third lamp cover 17 for mounting a third reflector 18. The third reflector 18 is fixed on the inner sidewall of the third inner cavity on both sides. The bottom of the third lamp cover 17 has a third opening, which forms a third clearance opening for the LED curing lamp 5 to irradiate the workpiece. Two inclined light-expanding blocks 50 are provided on both ends of the third opening of the third lamp cover 17. The distance between the two inclined light-expanding blocks 50 gradually increases in the direction of the LED curing lamp 5. The light emitted by the LED curing lamp 5 is diffused along the left and right sides of the third opening of the third lamp cover 17 through the third inclined reflector 19, the fourth inclined reflector 20, and the inclined light-expanding blocks 50 to form an inclined diffusion irradiation. This embodiment utilizes the cooperation between the inclined light-diffusing block 50 and the reflective surface, as well as the cooperation between the refractive block 30 and the reflective surface, 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. Moreover, some nano-light rays can directly irradiate without reflection and refraction, thereby enabling the curing lamp to achieve all-round diffusion irradiation. This increases the irradiation angle and range of the curing lamp, shortens the curing time of the paint on the workpiece surface, improves production efficiency, and ensures uniform curing effect of the paint on various parts of the workpiece surface, thus improving the curing quality of the paint on the workpiece.

[0087] The upper final curing lamp device 22 and the lower final curing lamp device 23 have a fourth inner cavity on their fourth lamp cover 24 for mounting the fourth reflector 25 and the skin-light curing lamp 6. The bottom of the fourth lamp cover 24 has a fourth opening, which forms a fourth clearance opening for the skin-light curing lamp 6 to illuminate the workpiece. The fourth lamp cover 24 has a second blocking block 51 at each end corresponding to the skin-light curing lamp 6. The fourth lamp cover 24 has a third heat dissipation hole 53, the second blocking block 51 has a fourth heat dissipation hole 52, and a second heat dissipation cavity 54 is formed between the fourth reflector 25 and the fourth inner cavity, which communicates with the third heat dissipation hole 53. In this embodiment, since the skin curing lamp generates a lot of heat when it is working, a second heat dissipation cavity 54 is formed between the fourth reflector 25 and the fourth inner cavity, which is connected to the third heat dissipation hole 53. The heat is discharged outward through the second heat dissipation cavity 54 and the heat dissipation hole. Moreover, an exhaust hood 75 is provided on the top of the curing chamber 2, which is connected to the inside of the curing chamber 2. The exhaust hood 75 is connected to an exhaust fan through a pipe to discharge the heat inside the curing chamber 2 and prevent the temperature inside the curing chamber from getting too high. This reduces the heat accumulation in the fourth lamp cover 24 and ensures that the skin curing lamp 6 can work stably.

[0088] The fourth reflector 25 is provided with a heat dissipation groove 55 that connects to the second heat dissipation cavity 54; two adjacent refractive blocks 30 are respectively inclined toward the front and rear ends of the fourth opening of the fourth lamp cover 24 and form a front and rear end refractive area 56; the light emitted by the skin curing lamp 6 is inclined and refracted toward the front and rear ends of the fourth opening of the fourth lamp cover 24 through the front and rear end refractive area 56. To facilitate the assembly between the fourth reflector 25 and the refractive block 30, assembly positions are provided at the top of the fifth inclined reflector 27 and the sixth inclined reflector 28; several refractive blocks 30 are respectively fixedly mounted on the fourth reflector 25 through the assembly positions. In this embodiment, the fourth reflector 25 and the refractive block 30 are fixed together by welding, pasting or fasteners, which results in a simple structure and stable assembly.

[0089] Several refracting blocks 30 extend in a serrated manner along the longitudinal direction of the fourth reflector 25, while adjacent refracting blocks 30 are connected at one end at an angle. During production, the several refracting blocks 30 are formed and fixed together by welding or integral stamping. The structure is simple and easy to produce, and it can also avoid the problem of resource waste caused by nano-light irradiation through gaps.

[0090] 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 refractive blocks 30; the reflection angle B and the refraction angle C are equal, or the reflection angle B is greater than or less than the refraction angle C.

[0091] In this embodiment, the reflective angle B and the refraction angle C are equal, so that the light energy irradiated by the fourth opening of the fourth lamp cover 24 on the left and right sides and the front and rear ends is uniform, ensuring that the paint on the workpiece surface can be irradiated with the same energy of light at each position, thereby achieving the purpose of uniform paint curing effect.

[0092] The fourth lamp cover 24 of the upper final curing lamp device 22 is inclinedly set above the transmission device 1. The inclined line of the fourth lamp cover 24 and the conveying line of the transmission device 1 form an inclination angle A, which is 30-80 degrees. The upper final curing lamp device 22 and the lower final curing lamp device 23 are staggered vertically, and the staggered position between the upper final curing lamp device 22 and the lower final curing lamp device 23 forms a workpiece irradiation coverage area.

[0093] The third lamp cover 17 of the lower pre-curing lamp device 16 and / or the fourth lamp cover 24 of the lower final curing lamp device 23 are respectively provided with connecting blocks 57 at both ends; the third lamp cover 17 of the lower pre-curing lamp device 16 and / or the fourth lamp cover 24 of the lower final curing lamp device 23 are respectively installed and removed from the fixed side plate of the transmission device 1 or the curing chamber 2 through the connecting blocks 57; and the fixed position of the third lamp cover 17 of the lower pre-curing lamp device 16 and / or the fourth lamp cover 24 of the lower final curing lamp device 23 on the curing chamber 2 is adjusted by the connecting blocks 57. In this embodiment, the connecting block 57 is L-shaped, with an elongated hole at its bottom. The elongated hole and the fixing hole at the bottom of the third lampshade 17 or the fourth lampshade 24 are adjusted in left and right positions by tightening or loosening fasteners to accommodate lampshades of different lengths. The connecting block 57 has a connecting hole on its side. The connecting hole and the strip hole on the fixed side plate of the transmission device 1 or the curing chamber 2 are adjusted in up and down positions by tightening or loosening fasteners to adjust the fixed positions of the lower pre-curing lamp device 16 and the lower final curing lamp device 23 on the curing chamber 2.

[0094] The third lampshade 17 of the upper pre-curing lamp device 15 or the fourth lampshade 24 of the upper final curing lamp device 22 are respectively fixed at both ends to the third lifting frame 58 and the fourth lifting frame 59. The third lifting frame 58 is slidably mounted on the first fixed frame 60, and the fourth lifting frame 59 is slidably mounted on the 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. The third lifting frame 58 is slidably mounted on the first fixed frame 60 through the third slider and the third slide rail. The fourth lifting frame 59 is slidably mounted on the second fixed frame. A fourth slider and a fourth slide rail are provided between 61. The fourth lifting frame 59 is reciprocally slidably mounted on the second fixed frame 61 via the fourth slider and the fourth slide rail. The first fixed frame 60 is provided with a first support plate seat 62 for inserting the 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. The second fixed frame 61 is provided with a second support plate seat 65 for inserting the fourth lifting screw 64. The fourth lifting screw 64 is inserted into the second support plate seat 65 and threadedly connected to the fourth lifting frame 59. A third transmission seat 66 is provided on the first support plate 62, and a fourth transmission seat 67 is provided on the second support plate 65. A third lifting screw 63 is inserted into the third transmission seat 66, and a fourth lifting screw 64 is inserted into the fourth transmission seat 67. A second synchronizing rod 68 is provided between the third lifting screw 63 and the fourth lifting screw 64, and is inserted transversely through the fourth lifting screw 64 and the fourth transmission seat 67. A fifth meshing tooth and a sixth meshing tooth are respectively provided on the parts of the third lifting screw 63 and the second synchronizing rod 68 inserted into the third transmission seat 66. The third lifting screw 63 and the second synchronizing rod 68 are connected by the fifth meshing tooth and the sixth meshing tooth. A seventh meshing tooth and an eighth meshing tooth are respectively provided on the parts of the fourth lifting screw 64 and the second synchronizing rod 68 inserted into the fourth transmission seat 67. The fourth lifting screw 64 and the second synchronizing rod 68 are connected by the fifth meshing tooth and the sixth meshing tooth. The step rods 68 are connected by a seventh meshing tooth and an eighth meshing tooth. One end of the second synchronous rod 68 is equipped with a second adjusting handwheel 69 or a second reducer 70 and a second motor 71 connected to the second reducer 70. The second adjusting handwheel 69 or the second motor 71 drives the second synchronous rod 68 to rotate. The second synchronous rod 68 simultaneously drives the third lifting screw 63 and the fourth lifting screw 64 to rotate on the second nut fixing seat 72 of the corresponding transmission seat, 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 up and down along the lifting screw through thread transmission, and the third lifting frame 58 and the fourth lifting frame 59 slide on the corresponding fixing frame, thereby adjusting the vertical distance between the pre-curing lamp device 3 or the final curing lamp device 4 and the workpiece.

[0095] The transmission device 1 includes a plurality of conveying rollers 74 rotatably mounted on the frame 73. Each conveying roller 74 has a gear at one end. The plurality of conveying rollers 74 are connected by transmission through gears and chains. One of the conveying rollers 74 has a drive motor at one end. The drive motor drives the plurality of conveying rollers 74 to rotate synchronously through transmission structures such as gears and chains.

[0096] The above describes the preferred embodiments of the present invention, illustrating and describing the basic principles, main features, and advantages of the invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A skin preparation process, characterized in that: A light source with a wavelength of 250-260 nm is used to irradiate workpieces coated with UV skin-like paint by roller coating or spraying. This causes the surface layer of the UV skin-like paint film on the workpiece to shrink and form a rough and wrinkled surface. The surface appears as a diffusely reflected paint surface when viewed from the workpiece, thus achieving a skin-like and matte effect on the workpiece's paint surface.

2. The skin preparation process according to claim 1, characterized in that: This UV coating preparation process can also selectively use a pre-curing device to pre-irradiate the workpieces coated with UV coating by roller or spray, depending on the preparation of the UV coating, so as to pre-cur the surface layer of the UV coating film on the workpiece, thereby improving the skin feel and matte effect of the workpiece coating. The pre-curing device is an LED lamp or a gallium lamp. The pre-curing device is located in front of the light source with a wavelength of 250-260 nm. The two can be set in one device or set separately in different devices and then cooperate with each other. After the skin-like surface is cured, a post-curing process and a post-curing device are also required. The post-curing device is a UV curing device, which can be set up separately on an independent device or as a module at the rear end of the skin-like surface device. For planar skin-like surface preparation, the UV curing device is set up as a module at the rear end of the skin-like surface curing device. For 3D skin-like surface preparation, the UV curing device is used as an independent device.

3. The skin preparation process according to claim 1, characterized in that: Its preparation process includes the following steps: a. Adjust the vertical distance between the conveying surface and the curing lamp group manually, electrically or pneumatically according to the thickness of the workpiece. b. Place the workpiece coated with UV skin coating by roller or spray on the conveyor (1), and the conveyor (1) moves the workpiece toward the curing chamber (2). c. The conveying device (1) drives the workpiece into the curing chamber (2). The workpiece first passes through the pre-curing lamp device (3) on the curing chamber (2). The pre-curing lamp device (3) includes an LED curing lamp (5). The LED curing lamp (5) irradiates the workpiece coated with UV skin-like paint and pre-cures the UV skin-like paint, thereby achieving pre-curing of the UV skin-like paint layer on the workpiece. d. After the UV skin-like paint base layer on the workpiece is pre-cured, the conveying device (1) drives the workpiece to continue moving. The workpiece then passes through the final curing lamp device (4) on the curing chamber (2). The final curing lamp device (4) includes a skin-like curing lamp (6) with a wavelength of 253-257nm. The skin-like curing lamp (6) irradiates the UV skin-like paint on the workpiece and causes the surface of the UV skin-like paint film to shrink and form a rough and wrinkled surface. The surface is a diffusely reflected paint surface when viewed from the workpiece, thereby achieving a skin-like and matte effect on the workpiece paint surface. e. After the UV skin-like coating on the workpiece forms a skin-like and matte effect, the conveying device (1) drives the workpiece to continue moving and enters the conventional UV curing machine, and the UV skin-like coating on the workpiece is completely cured under the irradiation of the mercury lamp.

4. The skin preparation process according to claim 3, characterized in that: When a workpiece coated with UV skin-like paint by roller coating or spraying is on a conveying device (1), the conveying speed of the conveying device (1) is 3-20 m / min; by adjusting the vertical distance between the pre-curing lamp device (3) and the conveying surface of the conveying device (1), the vertical distance between the pre-curing lamp device (3) and the workpiece is adjusted, so that the pre-curing lamp device (3) emits appropriate energy onto the workpiece; by adjusting the vertical distance between the final curing lamp device (4) and the conveying surface of the conveying device (1), the vertical distance between the final curing lamp device (4) and the workpiece is adjusted. The final curing lamp device (4) emits appropriate energy onto the workpiece. When the energy emitted onto the workpiece is appropriate, the UV skin-like coating film on the workpiece shrinks and forms an uneven and wrinkled surface. The surface appears as a diffusely reflected paint surface on the workpiece, thereby achieving a skin-like and matte effect on the workpiece paint surface. Its gloss can reach an extreme skin-like and matte effect of 0.5-5.0 degrees. The number of pre-curing lamp device (3) and final curing lamp device (4) is adjusted according to the specifications and dimensions of the workpiece. The pre-curing lamp device (3) and final curing lamp device (4) are equipped with reflective elements for the angle of the reflective lamp. When working, the light generated by the pre-curing lamp device (3) and final curing lamp device (4) is reflected at multiple different angles through the reflective wall of the reflective element and irradiates the workpiece. The UV skin-like paint on the workpiece absorbs the energy of the skin-like curing lamp (6) with a wavelength of 253-257nm and shrinks, forming an uneven and wrinkled surface, so as to finally achieve the skin-like and matte effect of the workpiece paint surface, even if the light sensitivity of the workpiece paint surface is 0.5-5.0 degrees, the skin-like and matte effect.

5. A skin-coating preparation apparatus, comprising a conveying device (1) for conveying a workpiece coated with UV skin-coating to a curing chamber (2), characterized in that: The curing chamber (2) is equipped with a pre-curing lamp device (3) and a final curing lamp device (4) arranged at intervals. The irradiation surfaces of the pre-curing lamp device (3) and the final curing lamp device (4) are located above the transmission device (1) so that the light generated by the pre-curing lamp device (3) and the final curing lamp device (4) irradiates the workpiece.

6. The skin preparation equipment according to claim 5, characterized in that: The UV curing equipment for the surface of the workpiece is a UV curing equipment for the surface of the workpiece. Its pre-curing lamp device (3) includes a first lamp cover (7), a first reflector (8) set at the bottom opening of the inner cavity of the first lamp cover (7), and an LED curing lamp (5) set on the first reflector (8). The LED curing lamp (5) is an LED bead, an LED strip or an LED strip. The LED bead, LED strip or LED strip is fixed on the reflective plane of the first reflector (8) by adhesive or fasteners. The final curing lamp device (4) of the UV skin-like coating curing equipment for the upper surface of the workpiece includes a second lamp cover (9), a second reflector (10) set at the bottom opening of the inner cavity of the second lamp cover (9), and a skin-like curing lamp (6) located below the second reflector (10). The wavelength of the skin-like curing lamp (6) is 254nm. The two ends of the skin-like curing lamp (6) are respectively fixed on the first end plate (11) of the second lamp cover (9). The second reflector (10) includes a first inclined reflective surface (12) and a second inclined reflective surface (13). The skin-like curing lamp (6) is a lamp tube and is located between the first inclined reflective surface (12) and the second inclined reflective surface (13). The distance between the reflective surface (12) and the second inclined reflective surface (13) gradually increases along the direction of the UV curing lamp (6) irradiating the workpiece; and a first wave scattering section (14) with undulating arrangement is provided between the first inclined reflective surface (12) and the second inclined reflective surface (13). The light generated by the UV curing lamp (6) is reflected at multiple different angles through the first inclined reflective surface (12), the first wave scattering section (14), and the second inclined reflective surface (13) and irradiates the workpiece so that the light irradiation range of the UV curing lamp (6) completely covers the paint surface on the upper surface of the workpiece, so as to cure the UV paint on the upper surface of the workpiece which is a flat surface or an irregular undulating surface. The first lamp cover (7) is provided with a first inner cavity for installing the first reflector (8). The two sides of the first reflector (8) are fixed on the inner sidewall of the first inner cavity respectively. The bottom of the first lamp cover (7) is provided with a first opening, which forms a first clearance opening for the LED curing lamp (5) to irradiate the workpiece. The second lamp cover (9) is provided with a first heat dissipation hole (31). The second lamp cover (9) is provided with a second inner cavity for installing the second reflector (10) and the skin curing lamp (6). The bottom of the second lamp cover (9) is provided with a second opening, which forms a second clearance opening for the skin curing lamp (6) to irradiate the workpiece. The second lamp cover (9) is provided with a first shielding block (32) at each end corresponding to the skin curing lamp (6). The first shielding block (32) is provided with a second heat dissipation hole (33). The first wave scattering section (14) of the second reflector (10) and the second inner cavity form a first heat dissipation cavity (34) that connects to the first heat dissipation hole (31).

7. The skin preparation equipment according to claim 6, characterized in that: The first lampshade (7) or the second lampshade (9) is fixed at both ends on the first lifting frame (35) and the second lifting frame (36) respectively. The first lifting frame (35) is fixedly mounted on the first movable frame (37), and the second lifting frame (36) is fixedly mounted on the second movable frame (38). The curing chamber (2) is provided with a first fixed seat (39) corresponding to the first movable frame (37), and 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). 7) The first slider is reciprocally slidably mounted on the first fixed seat (39) via the first slide rail; the second movable frame (38) and the second fixed seat (40) are provided with a second slider and a second slide rail, the second movable frame (38) is reciprocally slidably mounted on the second fixed seat (40) via 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), and the first fixed seat (39) is provided with a first A transmission seat (43) and a second fixed seat (40) are provided with a second transmission seat (44). A first lifting screw (41) is inserted into the first transmission seat (43), and a second lifting screw (42) is inserted into the second transmission seat (44). A first synchronizing rod (45) is provided between the first lifting screw (41) and the second lifting screw (42), which is inserted laterally through the first transmission seat (43) and the second transmission seat (44). A first meshing tooth and a second meshing tooth are respectively provided on the part between the first lifting screw (41) and the first synchronizing rod (45) inserted into the first transmission seat (43). The lowering screw (41) and the first synchronizing rod (45) are connected by a first meshing tooth and a second meshing tooth; the second lifting screw (42) and the first synchronizing rod (45) are respectively provided with a third meshing tooth and a fourth meshing tooth at the part where they are inserted into the second transmission seat (44). The second lifting screw (42) and the first synchronizing rod (45) are connected by a third meshing tooth and a fourth meshing tooth. The first synchronizing rod (45) is provided with a first adjusting handwheel (46) or a first reducer (47) and a first motor (48) connected to the first reducer (47) at one end.The first adjusting handwheel (46) or the first motor (48) drives the first synchronizing rod (45) to rotate. The first synchronizing rod (45) simultaneously drives the first lifting screw (41) and the second lifting screw (42) to rotate on the first nut fixing seat (49) of the corresponding transmission seat, 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 up and down along the lifting screw through thread transmission, and the movable frame corresponding to the first lifting frame (35) and the second lifting frame (36) moves along the corresponding fixing seat, so that the first lampshade (7) or the second lampshade (9) moves up and down and is set on the curing chamber (2), thereby adjusting the vertical distance between the pre-curing lamp device (3) or the final curing lamp device (4) and the workpiece.

8. The skin preparation equipment according to claim 5, characterized in that: The skin preparation equipment is a 3D skin preparation equipment. Its pre-curing lamp device (3) includes an upper pre-curing lamp device (15) and a lower pre-curing lamp device (16) arranged at an interval between the upper and lower layers. The upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) are arranged in opposite directions. The transmission device (1) is located between the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) so that the light from the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) can irradiate the workpiece. Both the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) include a third lamp cover (17) and a third reflector (18) located at the bottom opening of the inner cavity of the third lamp cover (17). The third reflector (18) includes a third inclined reflective surface (19) and a fourth inclined reflective surface (20). The distance between the third inclined reflective surface (19) and the fourth inclined reflective surface (20) gradually increases along the direction of the pre-curing lamp device (3) irradiating the workpiece. The third inclined reflective surface (19) and the fourth inclined reflective surface (20) are each provided with a second wave scattering section (21) for fixing the LED curing lamp (5). The scattering section (21) is composed of several inclined reflective blocks (26) arranged in an undulating manner. Each inclined block is fixed with LED beads, LED strips or LED strips. The LED beads, LED strips or LED strips are fixed to the second wave scattering section (21) by adhesive or fasteners. The light generated by the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) is reflected at multiple different angles through the third inclined reflective surface (19), the fourth inclined reflective surface (20) and the second wave scattering section (21) and irradiates the workpiece to pre-cur the UV skin coating on the five-dimensional surface of the workpiece. The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side. The final curing lamp device (4) of the 3D skin preparation equipment includes an upper final curing lamp device (22) and a lower final curing lamp device (23) arranged at an interval between the upper and lower layers. The irradiation directions of the upper final curing lamp device (22) and the lower final curing lamp device (23) are opposite to each other. The transmission device (1) is located between the upper final curing lamp device (22) and the lower final curing lamp device (23) so that the light from the upper final curing lamp device (22) and the lower final curing lamp device (23) irradiates the workpiece. Both the upper-layer final curing lamp device (22) and the lower-layer final curing lamp device (23) include a fourth lamp cover (24), a fourth reflector (25) disposed at the bottom opening of the inner cavity of the fourth lamp cover (24), and a skin-curing lamp (6) located below the fourth reflector (25). The fourth reflector (25) includes a fifth inclined reflective surface (27) and a sixth inclined reflective surface (28). A skin-curing lamp (6) is disposed between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28). The wavelength of the skin-curing lamp (6) is 254nm, and its two ends are respectively fixed on the second end plate (29) of the fourth lamp cover (24). The distance between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28) is along the skin-curing lamp. The direction of the UV curing lamp (6) irradiating the workpiece gradually increases; between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28), there are several refractive blocks (30) above the top of the UV curing lamp (6), one end of two adjacent refractive blocks (30) are connected to each other, or two adjacent refractive blocks (30) are spaced apart; the several refractive blocks (30) constitute the refractive section of the fourth reflector (25), and the light generated by the UV curing lamp (6) is reflected at multiple different angles through the fifth inclined reflective surface (27), the sixth inclined reflective surface (28), and the several refractive blocks (30) and irradiates the workpiece to perform terminal curing of the UV curing paint on the five-dimensional surface of the workpiece; The five-dimensional surfaces of the workpiece include a planar upper surface, front side, rear side, left side, and right side, or an irregularly shaped upper surface, front side, rear side, left side, and right side.

9. The skin preparation equipment according to claim 8, characterized in that: The upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) have a third inner cavity on their third lamp cover (17) for installing a third reflector (18). The third reflector (18) is fixed on the inner wall of the third inner cavity on both sides. The bottom of the third lamp cover (17) has a third opening, which forms a third clearance opening for the LED curing lamp (5) to irradiate the workpiece. Two inclined light-expanding blocks (50) are provided on both ends of the third opening of the third lamp cover (17). The distance between the two inclined light-expanding blocks (50) gradually increases in the direction of the LED curing lamp (5). The light emitted by the LED curing lamp (5) is diffused along the left and right sides of the third opening of the third lamp cover (17) through the third inclined reflector (19), the fourth inclined reflector (20), and the inclined light-expanding blocks (50). The upper final curing lamp device (22) and the lower final curing lamp device (23) have a fourth inner cavity on their fourth lamp cover (24) for installing the fourth reflector (25) and the skin-light curing lamp (6). The bottom of the fourth lamp cover (24) has a fourth opening, which forms a fourth clearance opening for the skin-light curing lamp (6) to illuminate the workpiece. The fourth lamp cover (24) has a second shielding block (51) at each end corresponding to the skin-light curing lamp (6). The fourth lamp cover (24) has a third heat dissipation hole (53), and the second shielding block (51) has a fourth heat dissipation hole (52). A second heat dissipation cavity (54) connecting the fourth reflector (25) and the fourth inner cavity is formed. The fourth reflector (25) is provided with a heat dissipation groove (55) that connects to the second heat dissipation cavity (54); two adjacent refractive blocks (30) are respectively inclined towards the front and rear ends of the fourth opening of the fourth lamp cover (24) and form a front and rear end refractive area (56); the light emitted by the skin curing lamp (6) is inclined and refracted towards the front and rear ends of the fourth opening of the fourth lamp cover (24) through the front and rear end refractive area (56); The fourth lamp cover (24) of the upper final curing lamp device (22) is inclined and set above the transmission device (1). The inclined line of the fourth lamp cover (24) and the conveying line of the transmission device (1) form an angle A, which is 30-80 degrees. The upper final curing lamp device (22) and the lower final curing lamp device (23) are staggered, and the staggered position of the upper final curing lamp device (22) and the lower final curing lamp device (23) forms a workpiece irradiation coverage area.

10. The skin preparation apparatus according to claim 9, characterized in that: The third lamp cover (17) of the lower pre-curing lamp device (16) and / or the fourth lamp cover (24) of the lower final curing lamp device (23) are respectively provided with connecting blocks (57); the third lamp cover (17) of the lower pre-curing lamp device (16) and / or the fourth lamp cover (24) of the lower final curing lamp device (23) are respectively installed and removed from the fixed side plate of the transmission device (1) or the curing chamber (2) through the connecting blocks (57); and the third lamp cover (17) of the lower pre-curing lamp device (16) and / or the fourth lamp cover (24) of the lower final curing lamp device (23) are adjusted in their fixed position on the curing chamber (2) through the connecting blocks (57); The third lampshade (17) of the upper pre-curing lamp device (15) or the fourth lampshade (24) of the upper final curing lamp device (22) is fixed at both ends on the third lifting frame (58) and the fourth lifting frame (59), respectively. The third lifting frame (58) is slidably mounted on the first fixed frame (60), and the fourth lifting frame (59) is slidably mounted on the 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). The third lifting frame (58) is slidably mounted on the first fixed frame (60) through the third slider and the third slide rail. The fourth lifting frame (59) is slidably mounted on the second fixed frame. (61) A fourth slider and a fourth slide rail are provided between them. The fourth lifting frame (59) is reciprocally slidably mounted on the second fixed frame (61) via the fourth slider and the fourth slide rail. The first fixed frame (60) is provided with a first support plate seat (62) for inserting the 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). The second fixed frame (61) is provided with a second support plate seat (65) for inserting the fourth lifting screw (64). 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 (62) is provided with a third transmission seat (66), and the second support plate (65) is provided with a fourth transmission seat (67). The third lifting screw (63) is inserted into the third transmission seat (66), and the fourth lifting screw (64) is inserted into the fourth transmission seat (67). A second synchronizing rod (68) is provided between the third lifting screw (63) and the fourth lifting screw (64) and is inserted transversely into the fourth lifting screw (64) and the fourth transmission seat (67). The third lifting screw (63) and the second synchronizing rod (68) are respectively provided with a fifth meshing tooth and a sixth meshing tooth at the part between them. The third lifting screw (63) and the second synchronizing rod (68) are connected by the fifth meshing tooth and the sixth meshing tooth. The fourth lifting screw (64) and the second synchronizing rod (68) are respectively provided with a seventh meshing tooth and an eighth meshing tooth at the part between them. The synchronizing rods (68) are connected by the seventh meshing tooth and the eighth meshing tooth, and the second synchronizing rod (68) is provided with a second adjusting handwheel (69) or a second reducer (70) and a second motor (71) connected to the second reducer (70) at one end; the second adjusting handwheel (69) or the second motor (71) drives the second synchronizing rod (68) to rotate, and the second synchronizing rod (68) simultaneously drives the third lifting screw (63) and the fourth lifting screw (64) to rotate on the second nut fixing seat (72) of the corresponding transmission seat, so that the third lifting screw (63) and the fourth lifting screw (64) rotate simultaneously, and the third lifting frame (58) and the fourth lifting frame (59) move up and down along the lifting screw through the thread transmission, and the third lifting frame (58) and the fourth lifting frame (59) slide on the corresponding fixing frame, thereby adjusting the vertical distance between the pre-curing lamp device (3) or the final curing lamp device (4) and the workpiece.

Images