CN117863726A - LED shading structure, curing device and curing method - Google Patents
LED shading structure, curing device and curing method Download PDFInfo
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- CN117863726A CN117863726A CN202310580824.XA CN202310580824A CN117863726A CN 117863726 A CN117863726 A CN 117863726A CN 202310580824 A CN202310580824 A CN 202310580824A CN 117863726 A CN117863726 A CN 117863726A
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- 238000001723 curing Methods 0.000 title claims abstract description 50
- 238000000016 photochemical curing Methods 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 9
- 238000007711 solidification Methods 0.000 claims 3
- 230000008023 solidification Effects 0.000 claims 3
- 230000000694 effects Effects 0.000 abstract description 20
- 230000002035 prolonged effect Effects 0.000 abstract description 7
- 238000001035 drying Methods 0.000 abstract description 4
- 238000012797 qualification Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- ILBBNQMSDGAAPF-UHFFFAOYSA-N 1-(6-hydroxy-6-methylcyclohexa-2,4-dien-1-yl)propan-1-one Chemical compound CCC(=O)C1C=CC=CC1(C)O ILBBNQMSDGAAPF-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41F—PRINTING MACHINES OR PRESSES
- B41F23/00—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing
- B41F23/04—Devices for treating the surfaces of sheets, webs, or other articles in connection with printing by heat drying, by cooling, by applying powders
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Abstract
The utility model provides an LED shading structure, a curing device and a curing method, wherein the LED shading structure comprises a first shading plate which is arranged along the direction facing a printing device, and a plurality of second shading plates which are arranged on one surface of the first shading plate facing a central roller and extend along the axial direction of the central roller, the plurality of second shading plates are sequentially arranged at intervals along the direction facing the printing device, and the second shading plates are used for shading and reflecting light rays scattered out from a gap between an LED light source and the central roller. According to the LED shading structure provided by the utility model, the gap between the LED light source and the central roller is prolonged through the first shading plate, the light emission path is prolonged, meanwhile, the light is sequentially shaded and reflected through the plurality of second shading plates, so that the leaked light can be reduced by a certain strength when passing through the reflection effect of each second shading plate, the energy finally emitted out of the curing device can be reduced to the minimum, the phenomenon of plate drying is avoided, the service life of a printing plate is prolonged, and the qualification rate of a printing product is improved.
Description
Technical Field
The utility model relates to the technical field of photo-curing, in particular to an LED shading structure, a curing device adopting the LED shading structure and a photo-curing method.
Background
At present, the printing industry tends to be environment-friendly, because the traditional printing mode adopts solvent type ink to cause severe pollution to the environment, the whole printing industry is rapidly LED to be environment-friendly, so that solvent-free printing is realized, the transmitted mercury lamp curing mode is gradually converted into a modern LED light curing mode, light generated by an LED light source is used for light curing of printed matters on a central roller, the printing curing operation can be rapidly completed, and the printing machine is more energy-saving and environment-friendly.
However, in order to ensure smooth rotation of the center roller, a certain gap must exist between the curing device and the center roller to prevent the curing device from scratching the printed matter, so that high-energy light is emitted along the gap and acts on the printing plate of the adjacent printing device in the LED photocuring process, a plate drying phenomenon is easy to occur, waste and loss of the plate material are caused, and the reasonable rate of the printed product is reduced.
In this regard, chinese patent No. CN218112086U discloses a light refraction type anti-leakage UV ink dryer, which realizes a condensing effect by matching an L-shaped channel and a reflecting plate, and converges and irradiates the light emitted from the emission end to a preset position, so as to reduce the light leakage problem. However, because there is still a gap between the drying device and the central roller, and the surface of the central roller is relatively smooth, a certain reflection effect is generated on the light, the light reflected by the central roller is changed in direction, so that at least part of the light still can be scattered along the gap between the drying device and the central roller, and the problem of light leakage can also exist.
Disclosure of Invention
The primary purpose of the utility model is to provide an LED shading structure so as to solve the technical problems that the existing LED curing device is easy to leak light and has serious influence on a printing device.
Another object of the present utility model is to provide a curing device, which adopts the LED shading structure.
It is still another object of the present utility model to provide a curing method, employing the above curing apparatus.
In order to achieve the above object, the present utility model provides the following technical solutions:
as a first aspect, the present utility model provides an LED light shielding structure for mounting on one side of an LED light source of a curing device for being disposed on an outer periphery of a center roller of a printer and being disposed at intervals along a circumferential direction of the center roller with respect to a printing device, the curing device being for photocuring printed matter printed by the printing device on the center roller by the LED light source;
the LED shading structure comprises a first shading plate extending towards the direction of the printing device, and a plurality of second shading plates arranged on one surface of the first shading plate towards the center roller and extending along the axial direction of the center roller, wherein the second shading plates are sequentially arranged at intervals along the direction towards the printing device, and the second shading plates are used for shading and reflecting light rays scattered out of a gap between the LED light source and the center roller.
Preferably, one end of the second light shielding plate away from the first light shielding plate is obliquely arranged towards the LED light source.
More preferably, the second light shielding plate is hinged with the first light shielding plate, and the LED light shielding structure further comprises a first angle adjusting component;
the first angle adjusting assembly comprises a first motor, a first screw, a first sliding block, a connecting rod and a plurality of second light-shielding plates, wherein the first motor is installed on one surface, far away from the central roller, of the first light-shielding plate, the first screw is connected with an output shaft of the first motor, the first sliding block is sleeved on the first screw and is in threaded connection with the first screw, the connecting rod is connected with the first sliding block, and the connecting rod is arranged along the side edge of the first light-shielding plate, bypasses the first light-shielding plate towards one surface of the central roller and is respectively connected with the plurality of second light-shielding plates.
Preferably, the heights of the second light shielding plates decrease gradually along the direction from two sides to the center of the first light shielding plate, so that the end surfaces of the second light shielding plates are combined together to form a parabolic structure with low middle and high two ends.
Preferably, the surface of the first light shielding plate and/or the second light shielding plate is provided with a zigzag structure, the tooth pitch of the zigzag structure is 0.5-1mm, and the tooth height of the zigzag structure is 1-2mm.
Preferably, the LED shading structure further comprises a mounting bracket for connecting with the light source and a spacing adjustment assembly arranged on the mounting bracket, and the first shading plate is connected with the spacing adjustment assembly;
the interval adjustment assembly comprises a second motor connected with the mounting bracket, a second screw rod connected with an output shaft of the second motor, and a second sliding block sleeved on the second screw rod and in threaded connection with the second screw rod, and the first light shielding plate is connected with the second sliding block and used for being driven by the second sliding block to move along a direction approaching to or far from the central roller.
More preferably, the LED shading structure further comprises a light sensor and a distance sensor electrically connected with the interval adjusting assembly respectively;
the light sensor is arranged on one side, far away from the LED light source, of the first light shielding plate, the light sensor is used for detecting the light intensity of the position where the light sensor is located and feeding back the detection result to the interval adjusting assembly, and the interval adjusting assembly is used for adjusting the interval between the mounting bracket and the central roller according to the detection result of the light sensor;
the distance sensor is used for detecting the distance between the second light shielding plate and the printed matter on the central roller, and the distance adjusting assembly is also used for controlling the minimum distance between the mounting bracket and the printed matter according to the detection result of the distance sensor.
More preferably, the LED shading structure further comprises a second angle adjustment assembly, the mounting bracket is used for being rotatably arranged relative to the LED light source, and the second angle adjustment assembly comprises a third motor which is connected with the mounting bracket and used for driving the mounting bracket to rotate relative to the LED light source to adjust the inclination angle.
As a second aspect, the present utility model further provides a curing device, including an LED light source and the LED light shielding structure described above, where the LED light shielding structure is installed at a side of the LED light source.
As a third aspect, the present utility model also provides a curing method, employing the above curing apparatus, comprising the steps of:
photo-curing the printed matter printed by the printing device on the central roller of the printer through the LED light source;
and reducing the light leaked from a gap between the LED light source and the central roller through the LED shading structure.
Compared with the prior art, the scheme of the utility model has the following advantages:
according to the LED shading structure, the gap between the LED light source and the central roller is prolonged through the first shading plate, the light emission path is prolonged, so that most of light is isolated, the light leakage problem is reduced, meanwhile, the light is sequentially shielded and reflected through the plurality of second shading plates, the reflection coefficient or the absorption coefficient of each second shading plate is adjusted, the leaked light can be reduced by a certain strength when passing through the reflection effect of each second shading plate, the plurality of second shading plates jointly form the tooth-shaped shading structure, the energy finally emitted out of the curing device can be reduced to the minimum after the light passes through the tooth-shaped shading structure for repeated multiple reflections, the influence on a printing plate of the printing device is effectively avoided, the dry plate phenomenon can not occur while the printing speed and the power of the LED light source are improved, the service life of the printing plate is prolonged, and the qualification rate of a printing product is improved.
Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.
Drawings
The foregoing and/or additional aspects and advantages of the utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:
FIG. 1 is a schematic diagram of an assembly structure of a curing device according to an embodiment of the present utility model;
FIG. 2 is an enlarged partial view of area A of the curing device shown in FIG. 1, wherein the solid lines with arrows indicate the propagation paths of light rays;
FIG. 3 is a perspective view of an LED shade structure in the curing apparatus shown in FIG. 1;
FIG. 4 is an end view of the LED shading structure shown in FIG. 3;
fig. 5 is an end view of another embodiment of the LED shading structure shown in fig. 3.
Legend description:
100. a curing device; 1. an LED shading structure; 11. a first light shielding plate; 12. a second light shielding plate; 13. a mounting bracket; 14. a first angle adjustment assembly; 141. a first motor; 142. a first screw; 143. a first slider; 144. a connecting rod; 145. a limit seat; 200. a center roller; 300. a printing device; 301. printing plate.
Detailed Description
Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.
It will be understood by those skilled in the art that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element/component is referred to as being "connected" to another element/component, it can be directly connected to the other element/component or intervening elements/components may also be present. The term "and/or" as used herein includes all or any element and all combination of one or more of the associated listed items.
Fig. 1 to fig. 5 collectively show a curing device and an LED shading structure thereof according to an embodiment of the present utility model, where the LED shading structure is configured to be disposed at one side of an LED light source of the curing device and reduce light emitted from the LED light source to a position outside a preset curing position, so as to reduce light leakage.
As shown in fig. 1, the LED shading structure 1 is mounted on one side of an LED light source 2 of a curing device 100, the curing device 100 is configured to be disposed on an outer circumference of a central roller 200 of a printer and spaced apart from a printing device 300 along a circumferential direction of the central roller 200, the printing device 300 includes a printing plate 301 for performing a printing operation on a printed matter on the central roller 200, and the curing device 100 is configured to photo-cure the printed matter printed by the printing device 300 on the central roller 200 by the LED light source 2.
It should be understood that, for convenience of enlarged description, only a partial structure of the center roller 200 is shown in the drawings, and the center roller 200 has a complete cylindrical structure for winding the printed matter and driving the printed matter to pass through the printing apparatus 300 and the curing apparatus 100 in sequence by a rotating motion, thereby performing printing and photo curing operations, respectively.
Please combine fig. 2 and fig. 3, the LED shading structure 1 includes a first shading plate 11 and a second shading plate 12, a first section of the first shading plate 11 is used for propping against one side of the LED light source 2, a second end of the first shading plate 11 extends along a direction towards the printing device 300, the second shading plate 12 is provided with a plurality of second shading plates 12, the plurality of second shading plates 12 are disposed on a surface of the first shading plate 11 towards the central roller 200 and all extend along an axial direction of the central roller 200, the plurality of second shading plates 12 are sequentially arranged at intervals along a direction towards the printing device 300, and the second shading plate 12 is used for shading and reflecting light scattered out from a gap between the LED light source 2 and the central roller 200.
Specifically, the LED shade structure 1 extends the gap between the LED light source 2 and the central roller 200 through the first shade 11, and extends the light emission path, thereby isolating most of the light, reducing the light leakage problem, and simultaneously, the second shades 12 sequentially shade and reflect the light, by adjusting the reflection coefficient or absorption coefficient of the second shades 12, the leaked light can be reduced by a certain intensity when passing through the reflection effect of each second shade 12, at this time, the plurality of second shades 12 jointly form a toothed shade structure, after the light passes through the repeated multiple reflection of the toothed shade structure, the energy finally emitted out of the curing device 100 can be reduced to the minimum, thereby effectively avoiding the influence on the printing plate 301 of the printing device 300, being beneficial to improving the printing speed and the power of the LED light source 2, simultaneously, the dry plate phenomenon can not appear, the service life of the printing plate 301 is prolonged, and the qualification rate of the printing product is improved.
As shown in fig. 4, the end of the second light-shielding plate 12 away from the first light-shielding plate 11 is inclined towards the LED light source 2, so as to change the reflection angle of the second light-shielding plate 12, and most of the light is reflected back to the preset curing position of the LED light source 2 through the second light-shielding plate 12, so that light leakage is reduced, and at the same time, the photo-curing effect is improved.
In another embodiment, as shown in fig. 5, the second shade plate 12 is hinged with the first shade plate 11, and the LED shade structure 1 further includes a first angle adjusting component 14.
The first angle adjusting assembly 14 includes a first motor 141 mounted on a surface of the first light-shielding plate 11 far from the central roller 200, a first screw rod 142 connected with an output shaft of the first motor 141, a first sliding block 143 sleeved on the first screw rod 142 and connected with the first screw rod 142 in a threaded manner, and a connecting rod 144 connected with the first sliding block 143, wherein the connecting rod 144 bypasses the surface of the first light-shielding plate 11 facing the central roller 200 along a side edge of the first light-shielding plate 11 and is respectively connected with a plurality of second light-shielding plates 12.
Specifically, the first motor 141 is configured to drive the first screw 142 to rotate, so that the first slider 143 slides along the first screw 142 under the action of screw thread fit, so that the first slider 143 drives the connecting rod 144 to move, and then the connecting rod 144 drives the plurality of second light-shielding plates 12 to rotate relative to the first light-shielding plate 11, and adjusts the inclination angles of the plurality of second light-shielding plates 12 relative to the first light-shielding plate 11, so as to adjust the light reflection angle, and adapt to different light-shielding requirements. Because the first motor 141, the first screw rod 142 and the first slider 143 are all disposed on the back surface of the first light-shielding plate 11, the assembly is more convenient, no influence is generated on the reflection path of the light, the light is ensured to be accurately reflected to each second light-shielding plate 12 to reduce energy, the first angle adjusting assembly 14 is prevented from being in a high-temperature high-radiation environment, and the first angle adjusting assembly 14 is effectively protected.
Further, the first angle adjusting assembly 14 further includes a limiting seat 145, the limiting seat 145 is mounted on a surface of the first light shielding plate 11 away from the central roller 200, and the first screw 142 is disposed in the limiting seat 145 in a penetrating manner and can rotate relative to the limiting seat 145. The first screw 142 is radially limited by the limiting seat 145, so that the first screw 142 is prevented from shaking in the use process, the stability of the first screw 142 is improved, the transmission precision is improved, and the angle adjustment precision is ensured.
Referring to fig. 2, the second light shielding plate 12 is adapted to the central roller 200 by adjusting the inclination angle of the second light shielding plate 12. At this time, when the light emitted by the LED light source 2 is reflected by the central roller 200 to the side of the second light-shielding plate 12 facing the LED light source 2, the light can be reflected by the corresponding second light-shielding plate 12 to the side of the previous second light-shielding plate 12 far away from the LED light source 2, then the light is reflected to the central roller 200 through the side of the previous second light-shielding plate 12 far away from the LED light source 2, then the light is reflected to the side of the next second light-shielding plate 12 facing the LED light source 2 through the central roller 200, and so on, the emitted light can be repeatedly reflected by the cooperation of the plurality of second light-shielding plates 12 and the central roller 200, so that the energy of the high-intensity light is gradually reduced in the process of repeated reflection, and the intensity is reduced.
Referring to fig. 4, preferably, the heights of the second light-shielding plates 12 decrease in sequence along the direction from two sides to the center of the first light-shielding plate 11, so that the end surfaces of the plurality of second light-shielding plates 12 are combined together to form a parabolic structure with low middle and high two ends. This parabolic structure not only can be better around the periphery setting of center roller 200, makes every second light screen 12 homoenergetic be closer to center roller 200 reduces the gap, can also change the reflection angle of light respectively through the second light screen 12 of co-altitude, optimizes the light and gives off the route, forms arc light screen structure, makes the light need just can finally give off after every second light screen 12, promotes the shading effect to because the high of second light screen 12 that is located on the both sides of first light screen 11 is highest, can play better shading effect, makes the light be difficult for spilling over, more is favorable to the light to reciprocate reflection and subtract the energy between a plurality of second light screens 12, reaches the effect that weakens excessive light.
Preferably, the surfaces of the first light shielding plate 11 and the second light shielding plate 12 are subjected to black anodic oxidation treatment, so that the light shielding plates can absorb light sources with any wavelength, and the light shielding effect is improved. In other embodiments, dark-colored light shielding materials may be coated on the surfaces of the first light shielding plate 11 and the second light shielding plate 12, so that the light shielding effect can be enhanced.
Preferably, a zigzag structure (not shown in the figures, and the same applies below) is arranged on the surface of the first light shielding plate 11 and/or the second light shielding plate 12, the pitch of the zigzag structure is 0.5-1mm, and the tooth height of the zigzag structure is 1-2mm. The zigzag structure may be a closed ring, for example, a ring, an ellipse, or a closed polygon, for example, a triangle, a quadrangle, a pentagon, or the like, so that the surface of the first light shielding plate 11 and/or the second light shielding plate 12 may be sufficiently dispersed by the zigzag structure, and light energy may be further reduced.
It should be noted that, when the pitch of the zigzag structure is less than 0.5mm or the tooth height of the zigzag structure is less than 1mm, the processing difficulty of the zigzag structure is increased, and the surface of the first light shielding plate 11 and/or the second light shielding plate 12 is too smooth, so as to reduce the effect of emitting light. When the tooth pitch of the zigzag structure is larger than 1mm or the tooth height of the zigzag structure is larger than 2mm, the zigzag structure can generate a light condensation function, so that light rays are converged, energy is improved, and the light-reducing effect is affected. In the embodiment, the tooth pitch of the zigzag structure is controlled to be 0.5-1mm, the tooth height of the zigzag structure is controlled to be 1-2mm, the processing difficulty is low, the effect of emitting light is optimal,
preferably, the LED shade structure 1 further includes a mounting bracket 13 for connecting with the light source 2 and a spacing adjustment assembly (not shown, the same applies below) provided on the mounting bracket 13, and the first shade 11 is connected with the spacing adjustment assembly.
The interval adjustment assembly comprises a second motor connected with the mounting bracket 13, a second screw rod connected with an output shaft of the second motor, and a second sliding block sleeved on the second screw rod and in threaded connection with the second screw rod, and the first light shielding plate 11 is connected with the second sliding block and used for being driven by the second sliding block to move along a direction approaching to or far from the center roller 200. The first light shielding plate 11 is driven to move relative to the mounting bracket 13 through the interval adjusting assembly, the interval between the first light shielding plate 11 and the second light shielding plate 12 relative to the center roller 200 is adjusted, applicability is further improved, and different printing requirements and light shielding requirements can be adapted.
In the use, when the power demand to LED light source 2 is lower, perhaps when the thickness of the printed matter on the central roller 200 is great, accessible interval adjustment subassembly increases first light screen 11 is relative the interval of central roller 200, avoid the light leak serious, ensure the clearance size of second light screen 12 relative the printed matter, avoid the light screen structure scratch the printed matter, guarantee the printing effect to be favorable to more promoting the rotational speed of central roller 200, promote printing efficiency. When the power requirement for the LED light source 2 is high, or the thickness of the printed matter on the central roller 200 is small, the distance between the first light shielding plate 11 and the central roller 200 can be reduced by the distance adjusting assembly, so that the light shielding effect is further improved, and the light emission is reduced.
More preferably, the LED shading structure further includes a light sensor (not shown, the same applies hereinafter) and a distance sensor (not shown, the same applies hereinafter) electrically connected to the spacing adjustment assembly, respectively.
The light sensor is arranged on one side of the first light shielding plate 11 away from the LED light source 2, and is used for detecting the light intensity of the position where the light sensor is located and feeding back the detection result to the interval adjusting assembly, and the interval adjusting assembly is used for adjusting the interval between the mounting bracket 13 and the central roller 200 according to the detection result of the light sensor. Through the light sensor detects light leakage intensity in real time, can the self-adaptation adjust the shading position of LED shading structure 1 satisfies different service scenarios, and the suitability is stronger.
Further, the distance sensor is configured to detect a distance between the second light shielding plate 12 and the printed matter on the central roller 200, and the distance adjustment assembly is further configured to control a minimum distance between the mounting bracket 13 and the printed matter according to a detection result of the distance sensor. The minimum distance between the second light shielding plate 12 and the printed matter is controlled through real-time detection of the distance sensor, so that the second light shielding plate 12 is prevented from being too close to the printed matter while the light shielding position is adjusted in a self-adaptive mode.
More preferably, the LED shading structure 1 further includes a second angle adjustment assembly (not shown in the drawings, and the same applies below) connected to the mounting bracket 13, where the mounting bracket 13 is configured to be rotatably disposed relative to the LED light source 2, and the second angle adjustment assembly includes a third motor connected to the mounting bracket 13 and configured to drive the mounting bracket 13 to rotationally adjust an inclination angle relative to the LED light source 2. The second angle adjusting component is used for adjusting the inclination angle of the mounting bracket 13 relative to the LED light source 2, so that the shading angles and the light reflection angles of the first shading plate 11 and the second shading plate 12 can be adjusted simultaneously, more shading requirements can be met in a self-adaptive mode, and more use scenes can be adapted. Secondly, since the first angle adjusting component 14 can also independently adjust the shading angle and the light reflection angle of the second shading plate 12, the first angle adjusting component and the second angle adjusting component can cooperate to achieve adjustment of more use states, so as to meet more application scenes.
As shown in fig. 1, as a second aspect, the present utility model also provides a curing device, which includes an LED light source 2 and the LED light shielding structure 1 described above, wherein the LED light shielding structure 1 is mounted on a side of the LED light source 2. The LED shading structure 1 is used for shading the gap between the LED light source 2 and the central roller 200, so that the structure is simple and compact, the shading effect is good, the printing plate 301 of the printing device 300 is effectively protected, the volume and occupied space of the LED light source 2 are not required to be increased, the light curing path of the LED light source 2 is not required to be changed, and the light curing effect of the LED light source 2 is ensured.
Preferably, the two groups of LED light sources 2 are arranged, the two groups of LED light sources 2 are symmetrically arranged relative to the central axis of the curing device and are obliquely arranged towards the central axis of the curing device, so that the light condensing effect and the light curing effect are improved, the light rays have a certain initial reflection angle, the light rays are prevented from directly overflowing, and the light rays can be reflected back and forth between the plurality of second light shielding plates 12 and gradually reduce energy.
As a third aspect, the present utility model also provides a curing method, employing the above curing apparatus, comprising the steps of:
photo-curing the printed matter printed by the printing device 300 on the central roller 200 of the printer by the LED light source 2;
light leaking out of the gap between the LED light source 2 and the center roller 200 is reduced by the LED light shielding structure 1.
Because the fixing method performs photo-curing operation through the curing device, the light energy emitted by the gap between the LED light source 2 and the center roller 200 can be effectively reduced, so that the fixing method can adapt to the LED light source 2 with higher power and faster printing speed, and the printing efficiency is improved.
The foregoing is only a partial embodiment of the present utility model, and it should be noted that it will be apparent to those skilled in the art that modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (10)
1. An LED shading structure for installing the one side at the LED light source (2) of solidification equipment (100), solidification equipment (100) are used for setting up in the periphery of central roller (200) of printing machine and along the circumferencial direction of central roller (200) is relative printing device (300) interval setting, solidification equipment (100) are used for through LED light source (2) to the printed matter after printing device (300) printing on central roller (200) carry out photocuring, its characterized in that:
the LED shading structure comprises a first shading plate (11) extending towards the direction of the printing device (300), and a plurality of second shading plates (12) arranged on one surface of the first shading plate (11) towards the center roller (200) and extending along the axial direction of the center roller (200), wherein the plurality of second shading plates (12) are sequentially arranged at intervals along the direction towards the printing device (300), and the second shading plates (12) are used for shading and reflecting light scattered out from a gap between the LED light source (2) and the center roller (200).
2. LED shading structure according to claim 1, characterized in that the end of the second shading plate (12) remote from the first shading plate (11) is arranged obliquely towards the LED light source (2).
3. The LED shade structure according to claim 2, wherein the second shade plate (12) is hinged to the first shade plate (11), the LED shade structure further comprising a first angle adjustment assembly (14);
the first angle adjusting assembly (14) comprises a first motor (141) arranged on one surface, far away from the central roller (200), of the first light shielding plate (11), a first screw (142) connected with an output shaft of the first motor (141), a first sliding block (143) sleeved on the first screw (142) and in threaded connection with the first screw (142), and a connecting rod (144) connected with the first sliding block (143), wherein the connecting rod (144) bypasses the side edge of the first light shielding plate (11) to the one surface, facing the central roller (200), of the first light shielding plate (11) and is respectively connected with a plurality of second light shielding plates (12).
4. The LED shading structure according to claim 1, wherein the heights of the second shading plates (12) decrease in sequence along the direction from the two sides to the center of the first shading plate (11), so that the end surfaces of the plurality of second shading plates (12) are combined together to form a parabolic structure with low middle and high two ends.
5. LED light shielding structure according to claim 1, characterized in that the surface of the first light shielding plate (11) and/or the second light shielding plate (12) is provided with a zigzag structure, the pitch of the zigzag structure is 0.5-1mm, and the pitch of the zigzag structure is 1-2mm.
6. The LED shading structure according to claim 1, further comprising a mounting bracket (13) for connection with the LED light source (2) and a spacing adjustment assembly provided on the mounting bracket (13), the first shading plate (11) being connected with the spacing adjustment assembly;
the interval adjustment assembly comprises a second motor connected with the mounting bracket (13), a second screw rod connected with an output shaft of the second motor, and a second sliding block sleeved on the second screw rod and in threaded connection with the second screw rod, and the first light shielding plate (11) is connected with the second sliding block and used for being driven by the second sliding block to move along a direction close to or far away from the central roller.
7. The LED shading structure of claim 6, further comprising a light sensor and a distance sensor electrically connected to the pitch adjustment assembly, respectively;
the light sensor is arranged on one side, far away from the LED light source (2), of the first light shielding plate (11), the light sensor is used for detecting the light intensity of the position where the light sensor is arranged and feeding back the detection result to the interval adjusting assembly, and the interval adjusting assembly is used for adjusting the interval of the mounting bracket (13) relative to the central roller (200) according to the detection result of the light sensor;
the distance sensor is used for detecting the distance between the second light shielding plate (12) and the printed matter on the central roller (200), and the distance adjusting assembly is also used for controlling the minimum distance between the mounting bracket (13) and the printed matter according to the detection result of the distance sensor.
8. The LED shading structure according to claim 6, further comprising a second angle adjustment assembly, the mounting bracket (13) being arranged rotatably with respect to the LED light source (2), the second angle adjustment assembly comprising a third motor connected to the mounting bracket (13) and being arranged for driving the mounting bracket (13) to rotate with respect to the LED light source (2) for adjusting the tilt angle.
9. A curing device comprising an LED light source (2), characterized in that the curing device further comprises an LED light shielding structure according to any one of claims 1 to 8, which is mounted at the side of the LED light source (2).
10. A curing method, characterized in that the curing apparatus according to claim 9 is used, comprising the steps of:
the LED light source (2) is used for photo-curing the printed matter printed by the printing device (300) on the central roller (200) of the printer;
light leaking from a gap between the LED light source (2) and the center roller (200) is reduced by the LED shading structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310580824.XA CN117863726A (en) | 2023-05-22 | 2023-05-22 | LED shading structure, curing device and curing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310580824.XA CN117863726A (en) | 2023-05-22 | 2023-05-22 | LED shading structure, curing device and curing method |
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