A device for producing a soft-touch matte surface

Abstract

Device for producing a soft-touch matte surface, comprising a transport device (1) for conveying a workpiece coated with UV soft-touch matte lacquer into 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), which are arranged in a spaced arrangement in front of and behind it, respectively; the irradiation surfaces of the pre-curing lamp device (3) and the final curing lamp device (4) are located above the transport device (1), so that the light generated by the pre-curing lamp device (3) and the final curing lamp device (4) shines onto the workpiece.

Description

TECHNICAL AREA

[0001] The present invention relates to the technical field of paint surface hardening, in particular a device for producing a soft-touch matte surface. STATE OF THE ART

[0002] Chinese patent number CN202120720678.2 discloses a device for generating a soft-touch effect using soft-touch UV lacquer. The device comprises a transport component for conveying sheet material on a frame, and several groups of UV excimer lamp components are arranged above the transport component. As the sheet material is transported on the transport component, the soft-touch UV lacquer, when irradiated by the UV excimer lamps, absorbs the nanometer-sized ultraviolet light emitted by the UV excimer lamps, creating a soft-touch effect. Because all the UV excimer lamp components are arranged above the transport component, the UV excimer lamp cannot irradiate the underside of the sheet material, resulting in low operating efficiency.

[0003] The reflection effect is not good, the soft-touch effect is not good.

[0004] The claim description states: The wavelength of the UV excimer lamp is 172-185 nm, nitrogen is required to achieve the soft-touch effect, production costs are high, and the process structure is complex.

[0005] Chinese patent number 202211576034.6 discloses a UV curing machine, see Fig. and Fig. This patent specification uses an arc-shaped reflection structure. Its arc-shaped reflection structure has fewer reflective surfaces; the reflective area is small, resulting in an insufficient hardening effect.

[0006] Therefore, further improvements are needed. CONTENT OF THE INVENTION

[0007] The object of the invention is a device for producing a soft-touch matte surface.

[0008] The objective of the invention is achieved as follows:

[0009] A device for producing a soft-touch matte surface, comprising a transport device for conveying a workpiece coated with UV soft-touch matte lacquer into a curing chamber, wherein the curing chamber is equipped with a pre-curing lamp device and a final curing lamp device, which are arranged in a spaced arrangement in front of and behind it, respectively; the irradiation surfaces of the pre-curing lamp device and the final curing lamp device are located above the transport device, so that the light generated by the pre-curing lamp device and the final curing lamp device shines onto the workpiece;

[0010] The device is a device for curing the UV soft-touch matte lacquer on the top surface of a workpiece, its pre-curing lamp device comprising: a first lamp housing, a first reflector element attached to the lower opening of the first lamp housing within its inner cavity, and an LED curing lamp attached to the first reflector element, the LED curing lamp consisting of LED chips, strips or tapes attached to the reflective surface of the first reflector element by gluing or by means of fasteners;

[0011] The final curing lamp device of the device for curing the UV soft-touch matte lacquer on the workpiece surface comprises: a second lamp housing, a second reflector element attached to the lower opening of the second lamp housing within its inner cavity, and a soft-touch matte curing lamp with a wavelength of 253-257 nm arranged below the second reflector element; the ends of the soft-touch matte curing lamp are each attached to the first end plate of the second lamp housing;the second reflector element comprises a first inclined reflective surface and a second inclined reflective surface, wherein the soft-touch matte curing lamp is designed as a fluorescent lamp and is arranged between the first inclined reflective surface and the second inclined reflective surface, wherein the distance between the first inclined reflective surface and the second inclined reflective surface increases in the direction of irradiation of the workpiece by the soft-touch matte curing lamp;and between the first inclined reflective surface and the second inclined reflective surface, a wave-shaped first diffusing segment is arranged, wherein the light generated by the soft-touch matte curing lamp is reflected by the first inclined reflective surface, the first wave-shaped diffusing segment and the second inclined reflective surface at several different angles and radiated onto the workpiece in order to completely extend the irradiation area of ​​the soft-touch matte curing lamp over the painted surface of the workpiece top and thus to cure the UV soft-touch matte lacquer on flat or irregularly shaped, curved or recessed surfaces of the workpiece.

[0012] The first lamp housing has a first inner cavity for receiving the first reflector element, wherein the two sides of the first reflector element are attached accordingly to the inner wall surfaces of the first inner cavity; the bottom of the first lamp housing has a first opening which forms a first recess through which the LED curing lamp shines onto the workpiece;

[0013] The second lamp housing has first heat dissipation openings and a second inner cavity for accommodating the second reflector element and the soft-touch matte curing lamp; the bottom of the second lamp housing has a second opening, which forms a second recess through which the soft-touch matte curing lamp shines onto the workpiece; the second lamp housing has, corresponding to the two ends of the soft-touch matte curing lamp, a first shielding block at each end, which has second heat dissipation openings, and between the first wave-shaped diffusing segment of the second reflector element and the second inner cavity, a first heat dissipation cavity is formed, which is connected to the first heat dissipation openings.

[0014] The ends of the first lamp housing or the second lamp housing are each attached to a first lifting frame and a second lifting frame, the first lifting frame being fixed to a first movable frame and the second lifting frame being fixed to a second movable frame; the hardening chamber has a first fixed stand corresponding to the first movable frame and a second fixed stand corresponding to the second movable frame, a first carriage and a first rail being arranged between the first movable frame and the first fixed stand, so that the first movable frame is slidably mounted on the first fixed stand via the first carriage and the first rail;A second carriage and a second rail are arranged between the second movable frame and the second fixed stand, such that the second movable frame is slidably mounted on the second fixed stand via the second carriage and the second rail; a first lifting screw is arranged on the first fixed stand, which is screw-engaged with the first lifting frame, and a second lifting screw is arranged on the second fixed stand, which is screw-engaged with the second lifting frame; the first fixed stand has a first drive stub and the second fixed stand has a second drive stub, the first lifting screw engaging in the first drive stub and the second lifting screw engaging in the second drive stub; a first synchronizing rod is arranged between the first lifting screw and the second lifting screw, which runs transversely through the first drive stub and the second drive stub;On the sections where the first helicopter screw and the first synchronizing rod engage in the first drive stub, a first and a second gear section are formed, respectively, so that the first helicopter screw and the first synchronizing rod are frictionally connected via the first and the second gear section; on the sections where the second helicopter screw and the first synchronizing rod engage in the second drive stub, a third and a fourth gear section are formed, respectively, so that the second helicopter screw and the first synchronizing rod are frictionally connected via the third and the fourth gear section; and one end of the first synchronizing rod has either a first adjusting handwheel or a first gearbox and a first motor frictionally connected to the first gearbox;The first adjusting handwheel or the first motor drives the first synchronizing rod to rotate, which in turn simultaneously drives the first lifting screw and the second lifting screw to rotate in the respective first nut-fixed supports of the drive stubs, so that the first lifting screw and the second lifting screw rotate simultaneously, and the first lifting frame and the second lifting frame move up and down along the lifting screws by means of the screw action, and the corresponding movable frames move along the corresponding fixed supports in order to position the first lamp housing or the second lamp housing height-adjustably on the hardening chamber and consequently to adjust the vertical distance between the pre-hardening lamp device or the final hardening lamp device and the workpiece.

[0015] The device is a 3D soft-touch matte device, the pre-curing lamp device of which comprises an upper pre-curing lamp device and a lower pre-curing lamp device, which are arranged in a spaced arrangement above and below it respectively, wherein the irradiation directions of the upper pre-curing lamp device and the lower pre-curing lamp device are directed towards each other and the transport device is located between the upper pre-curing lamp device and the lower pre-curing lamp device, so that the light of the upper and the lower pre-curing lamp devices shines onto the workpiece;

[0016] Both the upper pre-curing lamp device and the lower pre-curing lamp device comprise: a third lamp housing, a third reflector element attached to the lower opening of the third lamp housing within its inner cavity, the third reflector element comprising a third inclined reflective surface and a fourth inclined reflective surface, the distance between the third inclined reflective surface and the fourth inclined reflective surface increasing in the direction of irradiation of the workpiece by the pre-curing lamp device;On the third and fourth inclined reflective surfaces, a second wave-shaped diffusing segment is formed for mounting the LED curing lamp. This second wave-shaped diffusing segment consists of several inclined reflective surface elements forming a wave-like structure, on each of which an LED chip, LED strip, or LED tape is mounted. The LED chips, strips, or tapes are attached to the second wave-shaped diffusing segment by adhesive or by means of fastening elements. The light generated by the upper and lower pre-curing lamp devices is reflected by the third and fourth inclined reflective surfaces and the second wave-shaped diffusing segment at several different angles and directed onto the workpiece to pre-cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece.

[0017] The five-dimensional surfaces of the workpiece include the flat top, front, back, left side and right side, or irregularly shaped, curved or recessed top, front, back, left side and right side;

[0018] The final curing lamp device of the 3D soft-touch matte device comprises an upper final curing lamp device and a lower final curing lamp device, which are arranged in a spaced arrangement above and below it respectively, wherein the irradiation directions of the upper final curing lamp device and the lower final curing lamp device are directed towards each other and the transport device is located between the upper final curing lamp device and the lower final curing lamp device, so that the light of the upper and the lower final curing lamp devices shines onto the workpiece;

[0019] Both the upper and lower curing lamp devices comprise: a fourth lamp housing, a fourth reflector element attached to the lower opening of the fourth lamp housing within its inner cavity, and a soft-touch matte curing lamp with a wavelength of 254 nm arranged below the fourth reflector element, wherein the fourth reflector element comprises a fifth inclined reflective surface and a sixth inclined reflective surface, between which the soft-touch matte curing lamp is arranged, the ends of which are each attached to the second end plate of the fourth lamp housing, the distance between the fifth inclined reflective surface and the sixth inclined reflective surface increasing in the direction of irradiation of the workpiece by the soft-touch matte curing lamp;Above the soft-touch matte curing lamp, several refractive elements are arranged between the fifth inclined reflective surface and the sixth inclined reflective surface, with adjacent ends of two refractive elements being connected to each other or the several refractive elements being spaced apart from each other; the several refractive elements form the refractive section of the fourth reflector element, and the light generated by the soft-touch matte curing lamp is reflected by the fifth inclined reflective surface, the sixth inclined reflective surface and the several refractive elements at several different angles and directed onto the workpiece to final cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece;

[0020] The five-dimensional surfaces of the workpiece include the flat top, front, back, left side and right side, or irregularly shaped, curved or recessed top, front, back, left side and right side.

[0021] The third lamp housing of the upper pre-curing lamp device and the lower pre-curing lamp device has a third inner cavity for receiving the third reflector element, the two sides of the third reflector element being attached to the inner wall surfaces of the third inner cavity; the bottom of the third lamp housing has a third opening, which forms a third recess through which the LED curing lamp shines onto the workpiece; at both ends of the third opening of the third lamp housing, two inclined light-diffusing elements are arranged, the distance between which increases in the direction of irradiation by the LED curing lamp; the light emitted by the LED curing lamp is scattered to the left and right by the third inclined reflective surface, the fourth inclined reflective surface, and the inclined light-diffusing elements at the third opening of the third lamp housing;

[0022] The fourth lamp housing of the upper and lower curing lamp devices has a fourth inner cavity for receiving the fourth reflector element and the soft-touch matte curing lamp; the bottom of the fourth lamp housing has a fourth opening, forming a fourth recess through which the soft-touch matte curing lamp shines onto the workpiece; the fourth lamp housing has a second shielding block corresponding to each of the two ends of the soft-touch matte curing lamp; the fourth lamp housing has third heat dissipation openings, and the second shielding block has fourth heat dissipation openings, and a second heat dissipation cavity is formed between the fourth reflector element and the fourth inner cavity, which is connected to the third heat dissipation openings;

[0023] The fourth reflector element has heat dissipation grooves that are connected to the second heat dissipation cavity; each pair of adjacent refractive elements is inclined towards the front and rear ends of the fourth opening of the fourth lamp housing, respectively, forming front and rear refractive zones; the light emitted by the soft-touch matte curing lamp is refracted by the front and rear refractive zones towards the front and rear ends of the fourth opening of the fourth lamp housing;

[0024] The fourth lamp housing of the upper final curing lamp device is arranged obliquely above the transport device, with an angle of inclination A being formed between the inclination line of the fourth lamp housing and the conveying line of the transport device, which is between 30 and 80 degrees; the upper final curing lamp device and the lower final curing lamp device are arranged offset from each other in the vertical direction, and the offset area between them forms a workpiece irradiation cover zone.

[0025] The ends of the third lamp housing of the lower pre-curing lamp device and / or the fourth lamp housing of the lower final curing lamp device are each provided with connecting pieces; the third lamp housing of the lower pre-curing lamp device and / or the fourth lamp housing of the lower final curing lamp device are each detachably attached to the transport device or to fixed side plates of the curing chamber by means of the connecting pieces; and the third lamp housing of the lower pre-curing lamp device and / or the fourth lamp housing of the lower final curing lamp device are adjustable in their mounting position on the curing chamber by means of the connecting pieces;

[0026] The ends of the third lamp housing of the upper pre-curing lamp device or of the fourth lamp housing of the upper final curing lamp device are each attached to a third lifting frame and a fourth lifting frame, the third lifting frame being slidably mounted on a first fixed frame and the fourth lifting frame being slidably mounted on a second fixed frame; a third carriage and a third rail are arranged between the third lifting frame and the first fixed frame, so that the third lifting frame is slidably mounted on the first fixed frame via the third carriage and the third rail; a fourth carriage and a fourth rail are arranged between the fourth lifting frame and the second fixed frame, so that the fourth lifting frame is slidably mounted on the second fixed frame via the fourth carriage and the fourth rail;On the first fixed frame, a first support plate bracket for receiving a third lifting screw is arranged; the third lifting screw engages in the first support plate bracket and is in a screw-engaging connection with the third lifting frame; on the second fixed frame, a second support plate bracket for receiving a fourth lifting screw is arranged, wherein the fourth lifting screw engages in the second support plate bracket and is in a screw-engaging connection with the fourth lifting frame;

[0027] A third drive stub is attached to the first support plate bracket and a fourth drive stub to the second support plate bracket, with the third helicopter engaging in the third drive stub and the fourth helicopter engaging in the fourth drive stub; a second synchronizing rod is arranged between the third and fourth helicopters, running transversely through the fourth helicopter and the fourth drive stub; a fifth and a sixth toothed section are formed on the sections where the third helicopter and the second synchronizing rod engage in the third drive stub, respectively, so that the third helicopter and the second synchronizing rod are frictionally connected via the fifth and sixth toothed sections;On the sections where the fourth helicopter and the second synchronizing rod engage in the fourth drive stub, a seventh and an eighth toothed section, respectively, are formed, so that the fourth helicopter and the second synchronizing rod are positively connected via the seventh and the eighth toothed section; and one end of the second synchronizing rod has either a second adjusting handwheel or a second gearbox and a second motor positively connected to the second gearbox;The second adjusting handwheel or the second motor drives the second synchronizing rod to rotate, which in turn simultaneously drives the third lifting screw and the fourth lifting screw to rotate in the respective second nut-fixed supports of the drive stubs, so that the third lifting screw and the fourth lifting screw rotate simultaneously, and the third lifting frame and the fourth lifting frame move up and down along the lifting screws by means of the screw action and slide accordingly on the respective fixed frames in order to adjust the vertical distance between the pre-hardening lamp device or the final hardening lamp device and the workpiece.

[0028] The transport device comprises several conveyor rollers rotatably mounted on a frame, each conveyor roller end having a gear, the several conveyor rollers being positively connected via gears and a chain, and one of the conveyor rollers having a drive motor at one end which drives the several conveyor rollers to rotate synchronously via gears, a chain and similar drive structures.

[0029] The advantages of the present invention are as follows: Use of the pre-curing lamp device for the initial curing of the lacquer surface of a workpiece coated with UV soft-touch matt lacquer and the final curing lamp device for the final, complete curing of the lacquer surface.

[0030] Furthermore, the interaction of the opposing upper and lower pre-curing lamp devices creates a front light-curing area, so that a workpiece entering the front light-curing area on the conveyor belt can achieve pre-curing of the lacquer surfaces on the top, bottom and sides of the workpiece coated with UV soft-touch matt lacquer.Subsequently, the interaction of the two offset upper curing lamp devices and the two to five lower curing lamp devices creates a rear light-curing area, so that the workpiece with pre-cured UV soft-touch matte lacquer, which enters the rear light-curing area, undergoes further curing of the lacquer surfaces on the top, bottom and sides, ensuring that every lacquer surface of the workpiece is cured uniformly and effectively in every position and improving the quality of the lacquer curing on the sheet material.

[0031] The upper pre-curing lamp device, the lower pre-curing lamp device, the upper final curing lamp device and the lower final curing lamp device can simultaneously irradiate the lacquer surfaces on the top, bottom and sides of the workpiece coated with UV soft-touch matte lacquer, so that the workpiece can complete the curing of the lacquer at all positions in a single conveyor pass, which increases curing efficiency while ensuring curing quality.

[0032] The use of only one horizontally arranged upper pre-curing lamp device and one horizontally arranged lower pre-curing lamp device, opposite each other, ensures that heat build-up in the front light-curing area is avoided when the coated workpiece is effectively cured.

[0033] The two upper final curing lamp devices are arranged at an angle, the two to five lower final curing lamp devices are arranged horizontally at an angle, and at the same time the two upper final curing lamp devices and the two to five lower final curing lamp devices are vertically offset from each other, which also prevents heat build-up in the rear light curing area when the workpiece is effectively cured.

[0034] The angled arrangement of the two upper curing lamps ensures a sufficiently long irradiation path for the coating on the workpiece's surface during the conveying process. This allows even the two upper curing lamps to effectively and completely cure the coating on the surface of the workpiece coated with UV soft-touch matte lacquer. This improves the quality of the coating curing on the workpiece's surface while simultaneously reducing production costs. BRIEF DESCRIPTION OF THE DRAWING Fig. Figure 1 shows a schematic flowchart of the manufacturing process for a soft-touch matte surface according to an embodiment of the invention. Fig. Figure 2 shows a perspective view of a device for curing the UV soft-touch matte lacquer on the top of the workpiece according to an embodiment of the invention. Fig. Figure 3 shows a perspective sectional view of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 4 shows a lifting structure of the pre-curing lamp device of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 5 shows an exploded view of the assembly of the pre-curing lamp device and the lifting structure of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 6 shows an exploded view of the assembly of the final curing lamp device and the lifting structure of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 7 shows a perspective sectional view of the final curing lamp device of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 8 shows a top view of the final curing lamp device of the device for curing the UV soft-touch matte lacquer on the workpiece surface according to an embodiment of the invention. Fig. Figure 9 shows a perspective view of a 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 10 shows a schematic section plan of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 11 shows a section through the pre-curing lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 12 shows the pre-curing lamp device of the 3D soft-touch matte device with a formed wave-shaped scattering segment according to an embodiment of the invention. Fig. Figure 13 shows a perspective view of the upper pre-curing lamp device, the upper final curing lamp device and the transport device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 14 shows the assembly of the upper final hardening lamp device and the lifting structure of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 15 shows the assembly of the upper pre-curing lamp device and the lifting structure of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 16 shows an exploded view of the assembly of the transport device, the upper pre-curing lamp device, the lower pre-curing lamp device, the upper final curing lamp device and the lower final curing lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 17 shows the inclined arrangement of the upper final hardening lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 18 shows an exploded view of the assembly of the upper or lower final hardening lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 19 shows a perspective view of the final hardening lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 20 shows another perspective view of the final hardening lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 21 shows an exploded view of the final hardening lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 22 shows a section through the final curing lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 23 shows the internal structure of the final curing lamp device of the 3D soft-touch matte device according to an embodiment of the invention. Fig. Figure 24 shows an exploded view of the assembly of the lower final hardening lamp device and the connecting pieces of the 3D soft-touch matte device according to an embodiment of the invention. . Fig. Figure 25 shows the structure of an irregularly shaped workpiece surface according to an embodiment of the invention. Fig. Figure 26 shows another structure of an irregularly shaped workpiece surface according to an embodiment of the invention. DETAILED DESCRIPTION

[0035] The invention will now be described in more detail with reference to the figures and exemplary embodiments.

[0036] See Fig. 1-24. A manufacturing process for a soft-touch matte surface in which a light source with a wavelength of 250-260 nm is used to irradiate a workpiece that has been roller- or spray-coated with UV soft-touch matte lacquer, causing the top layer of the UV soft-touch matte lacquer film on the workpiece to shrink and form an uneven, wrinkled surface, the surface of which appears on the workpiece as a scattering lacquer surface in order to achieve a haptically soft, more matte surface effect on the workpiece lacquer surface.

[0037] A manufacturing process for a soft-touch matte surface that continues to use a conventional UV curing machine for the final, complete irradiation of the workpiece coated with UV soft-touch matte lacquer by roller or spray, in order to fully cure the top layer of the UV soft-touch matte lacquer film on the workpiece.

[0038] The conventional UV curing machine is located behind the light source with a wavelength of 250-260 nm, with both being integrated in one device or implemented in separate devices and combined with each other.

[0039] The manufacturing process may optionally include, based on the manufacturing parameters, a pre-curing device for prior irradiation of the workpiece coated with UV soft-touch matte lacquer in order to pre-cure the top layer of the UV soft-touch matte lacquer film on the workpiece in order to improve the haptically soft, more matte surface effect of the workpiece lacquer surface, wherein the pre-curing device is an LED lamp or a gallium lamp.

[0040] The pre-curing device is arranged in front of the light source with a wavelength of 250-260 nm, with both being integrated in one device or implemented in separate devices and combined with each other.

[0041] This means that in the manufacturing process, the light source with a wavelength of 250-260 nm and the conventional UV curing machine must be used simultaneously, while the pre-curing device can be optionally set up and used, or not set up, depending on the manufacturing parameters.

[0042] In the manufacturing process, the pre-curing device, the light source with a wavelength of 250-260 nm and the conventional UV curing machine are used simultaneously and are arranged sequentially.

[0043] After soft-touch matte curing, a post-curing process and a post-curing device are still required; the post-curing device is a UV curing device; the UV curing device can be arranged separately in an independent device or as a module at the end of the soft-touch matte device; when producing flat soft-touch matte surfaces, the UV curing device is integrated as a module at the end of the soft-touch matte curing device, while for 3D soft-touch matte surfaces, the UV curing device is used as a separate device.

[0044] This means that 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 device.

[0045] Or the pre-curing device and / or the conventional UV curing machine and the light source with a wavelength of 250-260 nm are housed in different devices and then combined.

[0046] This means that the pre-curing device is a separate production device, the conventional UV curing machine is another separate production device, the light source with a wavelength of 250-260 nm is again a separate production device, and these three production devices are set up separately and then connected together.

[0047] The manufacturing process described above comprises the following steps: a. Manual, electrical or pneumatic adjustment of the vertical distance between the conveying surface of the transport device and the hardening lamp group according to the workpiece thickness; b. Placing the workpiece coated with UV soft-touch matt lacquer by roller or spray coating on the transport device 1, wherein the transport device 1 moves the workpiece in the direction of the curing chamber 2; c. Insertion of the workpiece into the curing chamber 2 by the transport device 1, wherein the workpiece first passes the pre-curing lamp device 3 at the curing chamber 2, the pre-curing lamp device 3 comprising an LED curing lamp 5 which irradiates the workpiece coated with UV soft-touch matte lacquer and pre-cures the UV soft-touch matte lacquer in order to effect a pre-curing of the underlayer of the UV soft-touch matte lacquer on the workpiece; d. After pre-curing the underlayer of the UV soft-touch matte lacquer on the workpiece, the transport device 1 moves the workpiece further, and the workpiece then passes the final curing lamp device 4 at the curing chamber 2, wherein the final curing lamp device 4 comprises a soft-touch matte curing lamp 6 with a wavelength of 253-257 nm, which irradiates the UV soft-touch matte lacquer on the workpiece and causes the top layer of the UV soft-touch matte lacquer film to shrink and form an uneven, wrinkled surface, the surface of which appears on the workpiece as a scattering lacquer surface in order to achieve a haptically soft, more matte surface effect on the workpiece lacquer surface; e. After the UV soft-touch matte lacquer has developed its soft, matte effect on the workpiece, the transport device 1 moves the workpiece further into a conventional UV curing machine, where the UV soft-touch matte lacquer on the workpiece is completely cured under irradiation by mercury vapor lamps.

[0048] When the workpiece, coated with UV soft-touch matte lacquer by roller or spray application, is positioned on the transport device 1, the conveying speed of the transport 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 transport device 1, the vertical distance between the pre-curing lamp device 3 and the workpiece is adjusted to allow suitable energy exposure to the workpiece; by adjusting the vertical distance between the final curing lamp device 4 and the conveying surface of the transport device 1, the vertical distance between the final curing lamp device 4 and the workpiece is adjusted to allow suitable energy exposure to the workpiece;With suitable energy irradiation onto the workpiece, the top layer of the UV soft-touch matte lacquer film shrinks on the workpiece and forms an uneven, wrinkled surface, the surface of which appears on the workpiece as a scattering lacquer surface in order to achieve a haptically soft, more matte surface effect on the workpiece lacquer surface, whereby a gloss level of 0.5-5.0° can be achieved for an extremely haptically soft, more matte effect;

[0049] The number of pre-curing lamp devices 3 and final curing lamp devices 4 is adjusted according to the dimensions of the workpiece, wherein the pre-curing lamp device 3 and the final curing lamp device 4 are equipped with reflector elements for reflecting the angle of incidence of the light; during operation, the light generated by the pre-curing lamp device 3 and the final curing lamp device 4 is reflected by the reflective walls of the reflector elements at several different angles and directed onto the workpiece, so that the UV soft-touch matte lacquer on the workpiece absorbs the energy of the soft-touch matte curing lamp 6 with a wavelength of 253-257 nm, shrinks and forms an uneven, wrinkled surface in order to finally achieve the haptically soft, matte surface effect on the workpiece lacquer surface, so that the gloss level of the workpiece lacquer surface is 0.5-5.0° for an extremely haptically soft, matte effect.

[0050] In the manufacturing process, the soft-touch matte curing lamp is a lamp capable of generating energy with a wavelength of 253-257 nm. Its irradiation of the UV soft-touch matte lacquer on the workpiece causes the top layer of the UV soft-touch matte lacquer film to shrink, forming an uneven, wrinkled surface. This surface appears as a diffused lacquer coating on the workpiece. This lacquer surface feels soft and provides a tactile sensation similar to the touch of a baby's skin. Simultaneously, the gloss level is 0.5-5.0° for an extremely soft tactile effect, ultimately resulting in an exceptionally soft, matte finish on the workpiece's lacquered surface.

[0051] The above-mentioned procedure serves to explain the manufacturing process of a soft-touch matte surface and does not constitute a protected subject matter.

[0052] A device for producing a soft-touch matte surface, comprising a transport device 1 for conveying a workpiece coated with UV soft-touch matte lacquer into 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, which are arranged in a spaced-apart arrangement in front of and behind it, respectively; the irradiation surfaces of the pre-curing lamp device 3 and the final curing lamp device 4 are located above the transport device 1, so that the light generated by the pre-curing lamp device 3 and the final curing lamp device 4 shines onto the workpiece;

[0053] The device is a device for curing the UV soft-touch matte lacquer on the top surface of a workpiece, its pre-curing lamp device 3 comprising: a first lamp housing 7, a first reflector element 8 attached to the lower opening of the first lamp housing 7 in the inner cavity, and an LED curing lamp 5 attached to the first reflector element 8, wherein the LED curing lamp 5 consists of LED chips, strips or tapes which are attached to the reflective surface of the first reflector element 8 by gluing or by means of fastening elements;

[0054] The final curing lamp device 4 of the device for curing the UV soft-touch matte lacquer on the workpiece surface comprises: a second lamp housing 9, a second reflector element 10 attached to the lower opening of the second lamp housing 9 in the inner cavity, and a soft-touch matte curing lamp 6 with a wavelength of 253-257 nm arranged below the second reflector element 10; the ends of the soft-touch matte curing lamp 6 are each attached to the first end plate 11 of the second lamp housing 9;the second reflector element 10 comprises a first inclined reflective surface 12 and a second inclined reflective surface 13, wherein the soft-touch matte curing lamp 6 is designed as a fluorescent lamp and is arranged between the first inclined reflective surface 12 and the second inclined reflective surface 13, wherein the distance between the first inclined reflective surface 12 and the second inclined reflective surface 13 increases in the direction of irradiation of the workpiece by the soft-touch matte curing lamp 6;and between the first inclined reflective surface 12 and the second inclined reflective surface 13 a wave-shaped first diffusing segment 14 is arranged, wherein the light generated by the soft-touch matte curing lamp 6 is reflected by the first inclined reflective surface 12, the first wave-shaped diffusing segment 14 and the second inclined reflective surface 13 at several different angles and is radiated onto the workpiece in order to completely extend the irradiation area of ​​the soft-touch matte curing lamp 6 over the lacquered surface of the workpiece top and thus to cure the UV soft-touch matte lacquer on flat or irregularly shaped, curved or recessed surfaces of the workpiece.

[0055] Specifically: The wavelength of the Soft-Touch-Matt curing lamp 6 is 254 nm.

[0056] In this embodiment, the first inclined reflective surface 12 and the second inclined reflective surface 13 each have a bent edge that is attached to the opening of the second lamp housing 9. The opening of the second lamp housing 9 has angled support edges corresponding to the bent edges, and the bent edges of the first and second inclined reflective surfaces are supported accordingly on the respective support edges.

[0057] In this embodiment, each end plate of the lamp housing can be attached to the lamp housing by means of screws.

[0058] The first lamp housing 7 has a first inner cavity for receiving the first reflector element 8, wherein the two sides of the first reflector element 8 are attached accordingly to the inner wall surfaces of the first inner cavity; the bottom of the first lamp housing 7 has a first opening which forms a first recess through which the LED curing lamp 5 shines onto the workpiece;

[0059] The second lamp housing 9 has first heat dissipation openings 31 and a second inner cavity for receiving the second reflector element 10 and the soft-touch matte curing lamp 6; the bottom of the second lamp housing 9 has a second opening, which forms a second recess through which the soft-touch matte curing lamp 6 shines onto the workpiece; the second lamp housing 9 has a first shielding block 32 at each of the two ends of the soft-touch matte curing lamp 6, which has second heat dissipation openings 33, and a first heat dissipation cavity 34 is formed between the first wave-shaped diffusing segment 14 of the second reflector element 10 and the second inner cavity, which is connected to the first heat dissipation openings 31.

[0060] In this embodiment, the soft-touch matte curing lamp generates a significant amount of heat during operation. A first heat dissipation cavity 34 is formed between the first corrugated diffusing segment 14 of the second reflector element 10 and the second inner cavity. This first heat dissipation cavity is connected to the first heat dissipation openings 31. The heat is dissipated to the outside via the first heat dissipation cavity 34 and the first heat dissipation openings 31. Additionally, an exhaust hood 75 is attached to the top of the curing chamber 2 and is connected to the interior of the curing chamber 2. The exhaust hood 75 is connected via a duct to an exhaust fan to remove the heat from the curing chamber and prevent overheating of the chamber interior. This reduces heat buildup in the second lamp housing 9 and ensures stable operation of the soft-touch matte curing lamp 6.

[0061] The ends of the first lamp housing 7 or the second lamp housing 9 are each attached to a first lifting frame 35 and a second lifting frame 36, the first lifting frame 35 being fixedly attached to a first movable frame 37 and the second lifting frame 36 to a second movable frame 38; the hardening chamber 2 has a first fixed stand 39 corresponding to the first movable frame 37 and a second fixed stand 40 corresponding to the second movable frame 38, a first slide and a first rail being arranged between the first movable frame 37 and the first fixed stand 39, so that the first movable frame 37 is slidably mounted on the first fixed stand 39 via the first slide and the first rail;A second carriage and a second rail are arranged between the second movable frame 38 and the second fixed stand 40, such that the second movable frame 38 is slidably mounted on the second fixed stand 40 via the second carriage and the second rail; a first lifting screw 41 is arranged on the first fixed stand 39, which is screw-engaged with the first lifting frame 35, and a second lifting screw 42 is arranged on the second fixed stand 40, which is screw-engaged with the second lifting frame 36; the first fixed stand 39 has a first drive port 43 and the second fixed stand 40 has a second drive port 44, wherein the first lifting screw 41 engages in the first drive port 43 and the second lifting screw 42 engages in the second drive port 44;A first synchronizing rod 45 is arranged between the first helicopter 41 and the second helicopter 42, extending transversely through the first drive stub 43 and the second drive stub 44; on the sections where the first helicopter 41 and the first synchronizing rod 45 engage in the first drive stub 43, a first and a second toothed section are formed, respectively, so that the first helicopter 41 and the first synchronizing rod 45 are frictionally connected via the first and the second toothed section; on the sections where the second helicopter 42 and the first synchronizing rod 45 engage in the second drive stub 44, a third and a fourth toothed section are formed, respectively, so that the second helicopter 42 and the first synchronizing rod 45 are frictionally connected via the third and the fourth toothed section;and one end of the first synchronizing rod 45 has either a first adjusting handwheel 46 or a first gearbox 47 and a first motor 48 positively connected to the first gearbox 47;The first adjusting handwheel 46 or the first motor 48 drives the first synchronizing rod 45 to rotate, which in turn simultaneously drives the first lifting screw 41 and the second lifting screw 42 to rotate in the respective first nut-fixed supports 49 of the drive stubs, so that the first lifting screw 41 and the second lifting screw 42 rotate simultaneously, and the first lifting frame 35 and the second lifting frame 36 move up and down along the lifting screws by means of the screw action, and the corresponding movable frames move along the corresponding fixed supports in order to adjust the height of the first lamp housing 7 or the second lamp housing 9 on the hardening chamber 2 and consequently to adjust the vertical distance between the pre-hardening lamp device 3 or the final hardening lamp device 4 and the workpiece.

[0062] The device is a 3D soft-touch matte device, the pre-curing lamp device 3 of which comprises an upper pre-curing lamp device 15 and a lower pre-curing lamp device 16, which are arranged in a spaced arrangement above and below it respectively, wherein the irradiation directions of the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 are directed towards each other and the transport device 1 is located between the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16, so that the light of the upper and the lower pre-curing lamp devices shines onto the workpiece;

[0063] Both the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 comprise: a third lamp housing 17, a third reflector element 18 attached to the lower opening of the third lamp housing 17 in the inner cavity, wherein the third reflector element 18 comprises a third inclined reflective surface 19 and a fourth inclined reflective surface 20, wherein the distance between the third inclined reflective surface 19 and the fourth inclined reflective surface 20 increases in the direction of irradiation of the workpiece by the pre-curing lamp device 3;On the third inclined reflective surface 19 and the fourth inclined reflective surface 20, a second wave-shaped diffusing segment 21 is formed for mounting the LED curing lamp 5, wherein the second wave-shaped diffusing segment 21 consists of several inclined reflective surface elements 26 forming a wave-shaped structure, on each of whose inclined surfaces an LED chip, an LED strip or an LED tape is mounted; the LED chips, strips or tapes are attached to the second wave-shaped diffusing segment 21 by gluing or by means of fastening elements;The light generated by the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 is reflected at several different angles by the third inclined reflective surface 19, the fourth inclined reflective surface 20 and the second wave-shaped scattering segment 21 and radiated onto the workpiece to pre-cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece;

[0064] The five-dimensional surfaces of the workpiece include the flat top, front, back, left side and right side, or irregularly shaped, curved or recessed top, front, back, left side and right side;

[0065] The aforementioned irregularly shaped, convex or recessed tops, fronts, backs, left sides and right sides are in Fig. 25 or Fig. 26 shown.

[0066] The final curing lamp device 4 of the 3D soft-touch matte device comprises an upper final curing lamp device 22 and a lower final curing lamp device 23, which are arranged in a spaced arrangement above and below it respectively, wherein the irradiation directions of the upper final curing lamp device 22 and the lower final curing lamp device 23 are directed towards each other and the transport device 1 is located between the upper final curing lamp device 22 and the lower final curing lamp device 23, so that the light of the upper and the lower final curing lamp devices shines onto the workpiece;

[0067] Both the upper curing lamp device 22 and the lower curing lamp device 23 comprise: a fourth lamp housing 24, a fourth reflector element 25 attached to the lower opening of the fourth lamp housing 24 in its inner cavity, and a soft-touch matte curing lamp 6 with a wavelength of 254 nm arranged below the fourth reflector element 25, wherein the fourth reflector element 25 comprises a fifth inclined reflective surface 27 and a sixth inclined reflective surface 28, between which the soft-touch matte curing lamp 6 is arranged, the ends of which are each attached to the second end plate 29 of the fourth lamp housing 24, wherein the distance between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 increases in the direction of irradiation of the workpiece by the soft-touch matte curing lamp 6;Above the soft-touch matte curing lamp 6, several refractive elements 30 are arranged between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28, wherein adjacent ends of two refractive elements 30 are connected to each other or the several refractive elements 30 are spaced apart from each other; the several refractive elements 30 form the refractive section of the fourth reflector element 25, and the light generated by the soft-touch matte curing lamp 6 is reflected by the fifth inclined reflective surface 27, the sixth inclined reflective surface 28 and the several refractive elements 30 at several different angles and directed onto the workpiece to final cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece;

[0068] The five-dimensional surfaces of the workpiece include the flat top, front, back, left side and right side, or irregularly shaped, curved or recessed top, front, back, left side and right side.

[0069] The aforementioned irregularly shaped, convex or recessed tops, fronts, backs, left sides and right sides are in Fig. 25 or Fig. 26 shown.

[0070] In this embodiment, the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 each have bent edges. The opening of the fourth lamp housing 24 has support edges corresponding to the bent edges. The bent edges of the fifth and sixth inclined reflective surfaces rest on the respective support edges to fix the fourth reflector element 25 in the fourth lamp housing 24.

[0071] The third lamp housing 17 of the upper pre-curing lamp device 15 and the lower pre-curing lamp device 16 has a third inner cavity for receiving the third reflector element 18, wherein the two sides of the third reflector element 18 are accordingly attached to the inner wall surfaces of the third inner cavity; the bottom of the third lamp housing 17 has a third opening, which forms a third recess through which the LED curing lamp 5 shines onto the workpiece; at both ends of the third opening of the third lamp housing 17, two inclined light-diffusing elements 50 are arranged, the distance between which increases in the direction of irradiation by the LED curing lamp 5;The light emitted by the LED curing lamp 5 is scattered to the left and right by the third inclined reflective surface 19, the fourth inclined reflective surface 20 and the inclined light scattering elements 50 at the third opening of the third lamp housing 17;

[0072] This embodiment utilizes a combination of inclined light-scattering elements 50 and reflective surfaces, as well as a combination of refractive elements 30 and reflective surfaces, so that the light emitted by the curing lamp during operation can be reflected and refracted in various mutually perpendicular directions, thus effectively increasing the irradiated area. A portion of the nanometer light can also be emitted directly without reflection or refraction. This allows the curing lamp to achieve omnidirectional scattering, which increases the irradiation angle and area, reduces the curing time of the coating on the workpiece surface, increases production efficiency, and simultaneously ensures a uniform curing effect of the coating at all positions on the workpiece surface, thus improving the quality of the coating curing on the workpiece.

[0073] The fourth lamp housing 24 of the upper final curing lamp device 22 and the lower final curing lamp device 23 has a fourth inner cavity for receiving the fourth reflector element 25 and the soft-touch matte curing lamp 6; the bottom of the fourth lamp housing 24 has a fourth opening, which forms a fourth recess through which the soft-touch matte curing lamp 6 shines onto the workpiece; the fourth lamp housing 24 has a second shielding block 51 at each of the two ends of the soft-touch matte curing lamp 6; the fourth lamp housing 24 has third heat dissipation openings 53, and the second shielding block 51 has fourth heat dissipation openings 52, and a second heat dissipation cavity 54 is formed between the fourth reflector element 25 and the fourth inner cavity, which is connected to the third heat dissipation openings 53;

[0074] In this embodiment, the soft-touch matte curing lamp generates a significant amount of heat during operation. A second heat dissipation cavity 54 is formed between the fourth reflector element 25 and the fourth inner cavity, and this cavity is connected to the third heat dissipation openings 53. The heat is dissipated to the outside via the second heat dissipation cavity 54 and the heat dissipation openings. Additionally, an exhaust hood 75 is attached to the top of the curing chamber 2 and is connected to the interior of the curing chamber 2. The exhaust hood 75 is connected via a duct to an exhaust fan to remove the heat from the curing chamber and prevent overheating of the chamber interior; this reduces heat buildup in the fourth lamp housing 24 and ensures stable operation of the soft-touch matte curing lamp 6.

[0075] The fourth reflector element 25 has heat dissipation grooves 55 which are connected to the second heat dissipation cavity 54; two adjacent refractive elements 30 are inclined towards the front and rear ends of the fourth opening of the fourth lamp housing 24, respectively, and form front and rear refractive zones 56; the light emitted by the soft-touch matte curing lamp 6 is refracted by the front and rear refractive zones 56 towards the front and rear ends of the fourth opening of the fourth lamp housing 24;

[0076] To enable the mounting of the fourth reflector element 25 and the refractive elements 30, the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28 have additional mounting points on their upper side; several refractive elements 30 are each attached to the fourth reflector element 25 via these mounting points.

[0077] In this embodiment, the fourth reflector element 25 and the refractive elements 30 are fixed by welding, gluing or fastening elements; the structure is simple and the assembly is stable.

[0078] Several refractive elements 30 run in a zigzag pattern along the longitudinal direction of the fourth reflector element 25, with adjacent refractive elements 30 being obliquely connected to each other at one end. During manufacturing, the multiple refractive elements 30 are formed and fixed by welding or joint stamping, which allows for a simple structure and convenient production while preventing nanometer-sized light from escaping through gaps and wasting resources.

[0079] Between the fifth inclined reflective surface 27 and the sixth inclined reflective surface 28, an angle of reflection B is formed; between adjacent refractive elements 30, an angle of refraction C is formed; the angle of reflection B and the angle of refraction C are equal, or the angle of reflection B is greater or smaller than the angle of refraction C.

[0080] In this embodiment, the reflection angle B and the refraction angle C are equal, so that the light energy emitted from the fourth opening of the fourth lamp housing 24 to the left and right as well as to the front and back is uniform. This ensures that the paint on the workpiece surface is irradiated with light of the same energy at every position, thus achieving a uniform paint curing effect.

[0081] The fourth lamp housing 24 of the upper final curing lamp device 22 is arranged obliquely above the transport device 1, with an angle of inclination A being formed between the inclination line of the fourth lamp housing 24 and the conveying line of the transport device 1, which is between 30 and 80 degrees; the upper final curing lamp device 22 and the lower final curing lamp device 23 are arranged offset from each other in a vertical direction, and the offset area between them forms a workpiece irradiation cover zone.

[0082] The ends of the third lamp housing 17 of the lower pre-curing lamp device 16 and / or the fourth lamp housing 24 of the lower final curing lamp device 23 are each provided with connecting pieces 57; the third lamp housing 17 of the lower pre-curing lamp device 16 and / or the fourth lamp housing 24 of the lower final curing lamp device 23 are each detachably attached to the transport device 1 or to fixed side plates of the curing chamber 2 by means of the connecting pieces 57; and the third lamp housing 17 of the lower pre-curing lamp device 16 and / or the fourth lamp housing 24 of the lower final curing lamp device 23 are adjustable in their mounting position on the curing chamber 2 by means of the connecting pieces 57;

[0083] In this embodiment, the connecting pieces 57 are L-shaped. Their bases have elongated holes. The elongated holes and the mounting holes on the base of the third or fourth lamp housing allow the position to be adjusted horizontally by loosening or tightening the fasteners, thus enabling the mounting of lamp housings of different lengths. The sides of the connecting pieces 57 have connecting holes. The connecting holes and the elongated holes on the fixed side plates of the transport device 1 or the curing chamber 2 allow the position to be adjusted vertically by loosening or tightening the fasteners, in order to adjust the mounting position of the lower pre-curing lamp device 16 and the lower final curing lamp device 23 on the curing chamber 2.

[0084] The ends of the third lamp housing 17 of the upper pre-curing lamp device 15 or of the fourth lamp housing 24 of the upper final curing lamp device 22 are each attached to a third lifting frame 58 and a fourth lifting frame 59, the third lifting frame 58 being slidably mounted on a first fixed frame 60 and the fourth lifting frame 59 being slidably mounted on a second fixed frame 61; a third carriage and a third rail are arranged between the third lifting frame 58 and the first fixed frame 60, so that the third lifting frame 58 is slidably mounted on the first fixed frame 60 via the third carriage and the third rail; a fourth carriage and a fourth rail are arranged between the fourth lifting frame 59 and the second fixed frame 61, so that the fourth lifting frame 59 is slidably mounted on the second fixed frame 61 via the fourth carriage and the fourth rail;On the first fixed frame 60, a first support plate bracket 62 is arranged for receiving a third lifting screw 63; the third lifting screw 63 engages in the first support plate bracket 62 and is in a screw-engaging connection with the third lifting frame 58; on the second fixed frame 61, a second support plate bracket 65 is arranged for receiving a fourth lifting screw 64, wherein the fourth lifting screw 64 engages in the second support plate bracket 65 and is in a screw-engaging connection with the fourth lifting frame 59;

[0085] A third drive stub 66 is attached to the first support plate bracket 62 and a fourth drive stub 67 to the second support plate bracket 65, wherein the third helicopter 63 engages in the third drive stub 66 and the fourth helicopter 64 engages in the fourth drive stub 67; a second synchronizing rod 68 is arranged between the third helicopter 63 and the fourth helicopter 64, which runs transversely through the fourth helicopter 64 and the fourth drive stub 67; a fifth and a sixth toothed section are formed on the sections where the third helicopter 63 and the second synchronizing rod 68 engage in the third drive stub 66, respectively, so that the third helicopter 63 and the second synchronizing rod 68 are frictionally connected via the fifth and sixth toothed sections;On the sections where the fourth helicopter 64 and the second synchronizing rod 68 engage in the fourth drive stub 67, a seventh and an eighth toothed section are formed, respectively, so that the fourth helicopter 64 and the second synchronizing rod 68 are positively connected via the seventh and the eighth toothed sections; and one end of the second synchronizing rod 68 has either a second adjusting handwheel 69 or a second gearbox 70 and a second motor 71 positively connected to the second gearbox 70;The second adjusting handwheel 69 or the second motor 71 drives the second synchronizing rod 68 to rotate, which in turn simultaneously drives the third lifting screw 63 and the fourth lifting screw 64 to rotate in the respective second nut-fixed supports 72 of the drive stubs, 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 screws by means of the screw action and slide accordingly on the respective fixed frames in order to adjust the vertical distance between the pre-hardening lamp device 3 or the final hardening lamp device 4 and the workpiece.

[0086] The transport device 1 comprises several conveyor rollers 74 rotatably mounted on a frame 73, each conveyor roller end having a gear, the several conveyor rollers 74 being positively connected via gears and a chain, and one of the conveyor rollers 74 having a drive motor at one end which drives the several conveyor rollers 74 to rotate synchronously via gears, a chain and similar drive structures.

[0087] The above description presents the preferred embodiment of the invention and illustrates and describes its basic principles, main features, and advantages. Those skilled in the art should understand that the invention is not limited to the embodiments mentioned above. The examples shown in the embodiments above and in the description serve only to illustrate the principle of the invention. Without departing from the spirit and scope of the invention, there will be various modifications and improvements, all of which fall within the scope of protection of the invention as defined by the attached claims and their corresponding versions. QUOTES INCLUDED IN THE DESCRIPTION

[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature

[0000] CN 202120720678.2

[0002]

Claims

[1] Device for producing a soft-touch matte surface, comprising a transport device (1) for conveying a workpiece coated with UV soft-touch matte lacquer into a curing chamber (2), characterized by , that the hardening chamber (2) is equipped with a pre-hardening lamp device (3) and a final hardening lamp device (4), which are arranged in a spaced arrangement in front of and behind it respectively; the irradiation surfaces of the pre-hardening lamp device (3) and the final hardening lamp device (4) are located above the transport device (1), so that the light generated by the pre-hardening lamp device (3) and the final hardening lamp device (4) shines onto the workpiece. [2] Device according to claim 1, characterized by, that the device is a device for curing the UV soft-touch matte lacquer on the top surface of a workpiece, wherein its pre-curing lamp device (3) comprises: a first lamp housing (7), a first reflector element (8) attached to the lower opening of the first lamp housing (7) within its inner cavity, and an LED curing lamp (5) attached to the first reflector element (8), wherein the LED curing lamp (5) consists of LED chips, strips or tapes which are attached to the reflective surface of the first reflector element (8) by gluing or by means of fastening elements; The final curing lamp device (4) of the device for curing the UV soft-touch matte lacquer on the workpiece surface comprises: a second lamp housing (9), a second reflector element (10) attached to the lower opening of the second lamp housing (9) in the inner cavity, and a soft-touch matte curing lamp (6) with a wavelength of 254 nm arranged below the second reflector element (10); the ends of the soft-touch matte curing lamp (6) are each attached to the first end plate (11) of the second lamp housing (9);the second reflector element (10) comprises a first inclined reflective surface (12) and a second inclined reflective surface (13), wherein the soft-touch matte curing lamp (6) is designed as a fluorescent lamp and is arranged between the first inclined reflective surface (12) and the second inclined reflective surface (13), wherein the distance between the first inclined reflective surface (12) and the second inclined reflective surface (13) increases in the direction of irradiation of the workpiece by the soft-touch matte curing lamp (6);and between the first inclined reflective surface (12) and the second inclined reflective surface (13) a wave-shaped first scattering segment (14) is arranged, wherein the light generated by the soft-touch matt curing lamp (6) is reflected by the first inclined reflective surface (12), the first wave-shaped scattering segment (14) and the second inclined reflective surface (13) at several different angles and is radiated onto the workpiece in order to fully extend the irradiation area of ​​the soft-touch matt curing lamp (6) over the lacquered surface of the workpiece top and thus to cure the UV soft-touch matt lacquer on flat or irregularly shaped, curved or recessed surfaces of the workpiece; The first lamp housing (7) has a first inner cavity for receiving the first reflector element (8), wherein the two sides of the first reflector element (8) are attached accordingly to the inner wall surfaces of the first inner cavity; the bottom of the first lamp housing (7) has a first opening which forms a first recess through which the LED curing lamp (5) shines onto the workpiece; The second lamp housing (9) has first heat dissipation openings (31) and a second inner cavity for receiving the second reflector element (10) and the soft-touch matte curing lamp (6); the bottom of the second lamp housing (9) has a second opening, which forms a second recess through which the soft-touch matte curing lamp (6) shines onto the workpiece; the second lamp housing (9) has a first shielding block (32) at each of the two ends of the soft-touch matte curing lamp (6), which has second heat dissipation openings (33), and a first heat dissipation cavity (34) is formed between the first wave-shaped diffusing segment (14) of the second reflector element (10) and the second inner cavity, which is connected to the first heat dissipation openings (31). [3] Device according to claim 2, characterized by, that the ends of the first lamp housing (7) or the second lamp housing (9) are each attached to a first lifting frame (35) and a second lifting frame (36), the first lifting frame (35) being fixedly attached to a first movable frame (37) and the second lifting frame (36) being fixedly attached to a second movable frame (38); the hardening chamber (2) has a first fixed stand (39) corresponding to the first movable frame (37) and a second fixed stand (40) corresponding to the second movable frame (38), a first slide and a first rail being arranged between the first movable frame (37) and the first fixed stand (39), so that the first movable frame (37) is slidably mounted on the first fixed stand (39) via the first slide and the first rail;A second carriage and a second rail are arranged between the second movable frame (38) and the second fixed stand (40), such that the second movable frame (38) is slidably mounted on the second fixed stand (40) via the second carriage and the second rail; a first lifting screw (41) is arranged on the first fixed stand (39), which is screw-engaged with the first lifting frame (35), and a second lifting screw (42) is arranged on the second fixed stand (40), which is screw-engaged with the second lifting frame (36); the first fixed stand (39) has a first drive socket (43) and the second fixed stand (40) has a second drive socket (44), wherein the first lifting screw (41) engages in the first drive socket (43) and the second lifting screw (42) engages in the second drive socket (44);A first synchronizing rod (45) is arranged between the first helicopter (41) and the second helicopter (42), extending transversely through the first drive stub (43) and the second drive stub (44); on the sections where the first helicopter (41) and the first synchronizing rod (45) engage in the first drive stub (43), a first and a second toothed section are formed, respectively, so that the first helicopter (41) and the first synchronizing rod (45) are frictionally connected via the first and second toothed sections; on the sections where the second helicopter (42) and the first synchronizing rod (45) engage in the second drive stub (44), a third and a fourth toothed section are formed, respectively, so that the second helicopter (42) and the first synchronizing rod (45) are frictionally connected via the third and fourth toothed sections;and one end of the first synchronizing rod (45) has either a first adjusting handwheel (46) or a first gearbox (47) and a first motor (48) positively connected to the first gearbox (47);The first adjusting handwheel (46) or the first motor (48) drives the first synchronizing rod (45) to rotate, which in turn simultaneously drives the first lifting screw (41) and the second lifting screw (42) to rotate in the respective first nut-fixed supports (49) of the drive stubs, so that the first lifting screw (41) and the second lifting screw (42) rotate simultaneously, and the first lifting frame (35) and the second lifting frame (36) move up and down along the lifting screws by means of the screw action, and the corresponding movable frames move along the corresponding fixed supports in order to adjust the height of the first lamp housing (7) or the second lamp housing (9) on the hardening chamber (2) and consequently to adjust the vertical distance between the pre-hardening lamp device (3) or the final hardening lamp device (4) and the workpiece. [4] Device according to claim 1, characterized by, that the device is a 3D soft-touch matte device, the pre-curing lamp device (3) of which comprises an upper pre-curing lamp device (15) and a lower pre-curing lamp device (16) which are arranged in a spaced arrangement above and below it respectively, wherein the irradiation directions of the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) are directed towards each other and the transport device (1) is located between the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16), so that the light of the upper and the lower pre-curing lamp devices shines onto the workpiece; Both the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) comprise: a third lamp housing (17), a third reflector element (18) attached to the lower opening of the third lamp housing (17) within the inner cavity, wherein the third reflector element (18) comprises a third inclined reflective surface (19) and a fourth inclined reflective surface (20), wherein the distance between the third inclined reflective surface (19) and the fourth inclined reflective surface (20) increases in the direction of irradiation of the workpiece by the pre-curing lamp device (3);On the third inclined reflective surface (19) and the fourth inclined reflective surface (20), a second wave-shaped diffusing segment (21) is formed for mounting the LED curing lamp (5), wherein the second wave-shaped diffusing segment (21) consists of several inclined reflective surface elements (26) forming a wave-shaped structure, on each of whose inclined surfaces an LED chip, an LED strip or an LED tape is mounted; the LED chips, strips or tapes are attached to the second wave-shaped diffusing segment (21) by gluing or by means of fastening elements;The light generated by the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) is reflected at several different angles by the third inclined reflective surface (19), the fourth inclined reflective surface (20) and the second wave-shaped scattering segment (21) and radiated onto the workpiece to pre-cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece; wherein the five-dimensional surfaces of the workpiece comprise the flat top, front, back, left side and right side or irregularly shaped, curved or recessed top, front, back, left side and right side; The final curing lamp device (4) of the 3D soft-touch matte device comprises an upper final curing lamp device (22) and a lower final curing lamp device (23) arranged in a spaced arrangement above and below it, respectively, wherein the irradiation directions of the upper final curing lamp device (22) and the lower final curing lamp device (23) are directed towards each other and the transport 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 and the lower final curing lamp devices shines onto the workpiece; Both the upper curing lamp device (22) and the lower curing lamp device (23) comprise: a fourth lamp housing (24), a fourth reflector element (25) attached to the lower opening of the fourth lamp housing (24) within the inner cavity, and a soft-touch matte curing lamp (6) arranged below the fourth reflector element (25), wherein the fourth reflector element (25) comprises a fifth inclined reflective surface (27) and a sixth inclined reflective surface (28), between which the soft-touch matte curing lamp (6) with a wavelength of 254 nm is arranged, the ends of which are each attached to the second end plate (29) of the fourth lamp housing (24); the distance between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28) increases in the direction of the irradiation of the workpiece by the soft-touch matte curing lamp (6);Above the soft-touch matte curing lamp (6), several refractive elements (30) are arranged between the fifth inclined reflective surface (27) and the sixth inclined reflective surface (28), wherein adjacent ends of two refractive elements (30) are connected to each other or the several refractive elements (30) are spaced apart from each other; the several refractive elements (30) form the refractive section of the fourth reflector element (25), and the light generated by the soft-touch matte curing lamp (6) is reflected by the fifth inclined reflective surface (27), the sixth inclined reflective surface (28) and the several refractive elements (30) at several different angles and directed onto the workpiece to final cure the UV soft-touch matte lacquer on the five-dimensional surfaces of the workpiece; wherein the five-dimensional surfaces of the workpiece comprise the flat top, front, back, left side and right side or irregularly shaped, curved or recessed top, front, back, left side and right side. [5] Device according to claim 4, characterized by, that the third lamp housing (17) of the upper pre-curing lamp device (15) and the lower pre-curing lamp device (16) has a third inner cavity for receiving the third reflector element (18), wherein the two sides of the third reflector element (18) are attached accordingly to the inner wall surfaces of the third inner cavity; the bottom of the third lamp housing (17) has a third opening, which forms a third recess through which the LED curing lamp (5) shines onto the workpiece; at both ends of the third opening of the third lamp housing (17) two inclined light-diffusing elements (50) are arranged, the distance between which increases in the direction of irradiation by the LED curing lamp (5);The light emitted by the LED curing lamp (5) is scattered to the left and right by the third inclined reflective surface (19), the fourth inclined reflective surface (20) and the inclined light scattering elements (50) at the third opening of the third lamp housing (17); The fourth lamp housing (24) of the upper final curing lamp device (22) and the lower final curing lamp device (23) has a fourth inner cavity for receiving the fourth reflector element (25) and the soft-touch matte curing lamp (6); the bottom of the fourth lamp housing (24) has a fourth opening, which forms a fourth recess through which the soft-touch matte curing lamp (6) shines onto the workpiece; the fourth lamp housing (24) has a second shielding block (51) at each of the two ends of the soft-touch matte curing lamp (6); the fourth lamp housing (24) has third heat dissipation openings (53), and the second shielding block (51) has fourth heat dissipation openings (52), and between the fourth reflector element (25) and the fourth inner cavity a second heat dissipation cavity (54) is formed which is connected to the third heat dissipation openings (53); The fourth reflector element (25) has heat dissipation grooves (55) which are connected to the second heat dissipation cavity (54); two adjacent refractive elements (30) are inclined towards the front and rear ends of the fourth opening of the fourth lamp housing (24), respectively, forming front and rear refractive zones (56); the light emitted by the soft-touch matte curing lamp (6) is refracted by the front and rear refractive zones (56) towards the front and rear ends of the fourth opening of the fourth lamp housing (24); The fourth lamp housing (24) of the upper final curing lamp device (22) is arranged obliquely above the transport device (1), with an angle of inclination A being formed between the inclination line of the fourth lamp housing (24) and the conveying line of the transport device (1), which is between 30 and 80 degrees; the upper final curing lamp device (22) and the lower final curing lamp device (23) are arranged offset from each other in the vertical direction, and the offset area between them forms a workpiece irradiation cover zone. [6] Device according to claim 5, characterized by, that the ends of the third lamp housing (17) of the lower pre-curing lamp device (16) and / or the fourth lamp housing (24) of the lower final curing lamp device (23) are each provided with connecting pieces (57); the third lamp housing (17) of the lower pre-curing lamp device (16) and / or the fourth lamp housing (24) of the lower final curing lamp device (23) are each detachably attached to the transport device (1) or to fixed side plates of the curing chamber (2) by means of the connecting pieces (57); and the third lamp housing (17) of the lower pre-curing lamp device (16) and / or the fourth lamp housing (24) of the lower final curing lamp device (23) are adjustable in their mounting position on the curing chamber (2) by means of the connecting pieces (57); The ends of the third lamp housing (17) of the upper pre-curing lamp device (15) or of the fourth lamp housing (24) of the upper final curing lamp device (22) are each attached to a third lifting frame (58) and a fourth lifting frame (59), wherein the third lifting frame (58) is slidably mounted on a first fixed frame (60) and the fourth lifting frame (59) is slidably mounted on a second fixed frame (61); between the third lifting frame (58) and the first fixed frame (60) a third carriage and a third rail are arranged, so that the third lifting frame (58) is slidably mounted on the first fixed frame (60) via the third carriage and the third rail; A fourth carriage and a fourth rail are arranged between the fourth lifting frame (59) and the second fixed frame (61), so that the fourth lifting frame (59) is slidably mounted on the second fixed frame (61) via the fourth carriage and the fourth rail;A first support plate bracket (62) for receiving a third lifting screw (63) is arranged on the first fixed frame (60); the third lifting screw (63) engages in the first support plate bracket (62) and is screw-connected to the third lifting frame (58); a second support plate bracket (65) for receiving a fourth lifting screw (64) is arranged on the second fixed frame (61), the fourth lifting screw (64) engaging in the second support plate bracket (65) and being screw-connected to the fourth lifting frame (59); A third drive stub (66) is attached to the first support plate bracket (62) and a fourth drive stub (67) is attached to the second support plate bracket (65), the third helicopter (63) engaging in the third drive stub (66) and the fourth helicopter (64) engaging in the fourth drive stub (67); a second synchronizing rod (68) is arranged between the third helicopter (63) and the fourth helicopter (64), which runs transversely through the fourth helicopter (64) and the fourth drive stub (67); a fifth and a sixth toothed section are formed on the sections where the third helicopter (63) and the second synchronizing rod (68) engage in the third drive stub (66), respectively, so that the third helicopter (63) and the second synchronizing rod (68) are frictionally connected via the fifth and sixth toothed sections;On the sections where the fourth helicopter (64) and the second synchronizing rod (68) engage in the fourth drive stub (67), a seventh and an eighth toothed section are formed, respectively, so that the fourth helicopter (64) and the second synchronizing rod (68) are frictionally connected via the seventh and the eighth toothed section; and one end of the second synchronizing rod (68) has either a second adjusting handwheel (69) or a second gearbox (70) and a second motor (71) frictionally connected to the second gearbox (70);The second adjusting handwheel (69) or the second motor (71) drives the second synchronizing rod (68) to rotate, which in turn simultaneously drives the third lifting screw (63) and the fourth lifting screw (64) to rotate in the respective second nut-fixed supports (72) of the drive stubs, 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 screws by the screw action and slide accordingly on the respective fixed supports in order to adjust the vertical distance between the pre-hardening lamp device (3) or the final hardening lamp device (4) and the workpiece.

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