CN220277498U - Curing device for light irradiation - Google Patents

Abstract

The utility model relates to the technical field of coating curing, in particular to a curing device for light irradiation. The curing device comprises: a curing light for providing irradiated light; the carrier plate is used for carrying an object to be solidified and is arranged in the irradiation range of the solidifying lamp; the lamp shade is used for limiting a light irradiation area, the lamp shade is arranged between the curing lamp and the carrier plate, an illumination adjusting hole is formed in the lamp shade, and the illumination adjusting hole opens a light irradiation path of the curing lamp. Compared with the prior art, the utility model can form the pattern layer morphology with thickness difference through the curing device, the thickness is uniformly changed, the curing mode of the illumination range can be adjusted, the flexibility of pattern shape adjustment is higher, and the single pattern layer with various requirements can be realized only by changing the area and the shape of the curing light in the lampshade.

Description

Curing device for light irradiation

Technical Field

The utility model relates to the technical field of coating curing, in particular to a curing device for light irradiation.

Technical Field

With the gradual development of Light-emitting diode (LED) Light source technology, the application of LED lamps as point Light sources or the application of multiple groups of LEDs as line/surface Light sources is more and more widespread, but LEDs are single-point Light sources, and after being regularly arranged in an array or irregularly arranged randomly, the Light intensity of the whole line/surface is difficult to be ensured to be consistent after being combined due to a certain interval inevitably existing between the LED Light sources, which brings adverse experience to the application of the LED lamps in the new energy field.

Therefore, the reflectivity of different positions on the substrate side of the LED light source needs to be regulated, or a light barrier with regional difference in transmittance is added on the light emitting side of the LED to realize the uniformity of the final light intensity. However, the uniformity of the light intensity is realized by the reflecting layer or the light blocking layer, and the essence is that a coating layer with different reflectivity in different position areas needs to be manufactured.

In the prior art, in the coating printing stage, the coating with the difference in reflectivity is prepared by controlling the printing thickness of the coating in each area, and a common coating curing device only relates to curing the coating through high temperature, so that the preparation of the coating with the difference in reflectivity cannot be realized in the curing step.

Disclosure of Invention

In order to solve the technical problems, the inventor analyzes the coating forming technology known in the prior art, searches for the reasons for the technical problems, designs and improves the curing device of the coating, and can prepare the coating with different reflectivity through the curing step.

The specific technical scheme is as follows:

a light-irradiated curing apparatus comprising:

a curing light for providing irradiated light;

the carrier plate is used for carrying an object to be solidified and is arranged in the irradiation range of the solidifying lamp;

the lamp shade is used for limiting a light irradiation area, the lamp shade is arranged between the curing lamp and the carrier plate, an illumination adjusting hole is formed in the lamp shade, and the illumination adjusting hole opens a light irradiation path of the curing lamp.

The curing method corresponding to the technical scheme comprises the following steps: placing a substrate printed with a pattern layer below a curing lamp and a lamp shade thereof in a curing device, wherein the lamp shade part blocks illumination of the curing lamp, and realizing migration of solutes in ink in the curing process by enabling materials in different areas of the carrier plate to correspond to different curing illumination intensities so as to form a single pattern layer with different thickness;

the principle of the technical scheme is as follows: the layer that the curing light illumination was reached absorbs illumination energy more easily, and solvent volatilizes faster in the printing ink of here layer, and the concentration of solute is higher for other regions, and under the drive effect of solute concentration difference, the solute is towards its lower concentration region diffusion, and then forms the single layer that thickness (solute content) is different to can set up the position that the illumination was located according to actual demand, adjust the thickness distribution of single layer.

The flexibility of pattern shape adjustment is larger in the technical scheme, and a single pattern layer with various requirements can be realized only by changing the area and the shape of the cured light in the lampshade.

Preferably, the lamp shade further comprises an adjusting mechanism for adjusting the vertical position of the lamp shade.

Preferably, the adjusting mechanism comprises a motor, a screw rod and a sliding block;

the motor is a servo motor or a linear motor, the motor drives the sliding block through the screw rod, and the sliding block is connected with the lampshade.

Preferably, the adjusting mechanism comprises a plurality of layers of clamping grooves with different heights, and the clamping grooves are used for accommodating the lampshade.

Preferably, the illumination adjusting holes are round through holes arranged on the lamp housing at intervals.

Preferably, the curing lamp is a lamp emitting infrared rays.

Preferably, the curing device further comprises:

an ink solvent storage tank for storing a solvent for the ink;

and the steam gas circuit is used for releasing steam generated after the ink solvent storage tank is heated into the curing area, and the steam gas circuit is communicated with the ink solvent storage tank through a flow regulating valve.

Preferably, the ink solvent reservoir is heated by a separate heat source.

The curing method of the technical scheme comprises the following steps: and (3) introducing steam of ink solvent with stable concentration into the curing area, particularly introducing steam of ink solvent with saturated concentration into the curing area, so as to ensure consistent volatilization rate in the ink curing process in a mode of providing saturated steam of the ink solvent, and further reduce the generation of a coffee ring effect, wherein the coffee ring effect refers to that: after liquid coherence, the solid phase substance in the liquid phase substance can leave a stain, the stain is unevenly distributed, and the edge part is more than the middle part, so that the phenomenon of annular spots is formed.

Preferably, the steam gas circuit comprises a plurality of branch gas circuits, and the branch gas circuits are mutually parallel and are arranged at the same horizontal position at intervals.

Preferably, the steam gas circuit is provided with solvent steam outlets, and the solvent steam outlets are uniformly and alternately arranged on the upper surface of the steam gas circuit.

In summary, the technical scheme of the utility model has the following main beneficial effects:

compared with the prior art, the utility model can form the pattern layer morphology with thickness difference through the curing device, the thickness is uniformly changed, the curing mode of the illumination range can be adjusted, the flexibility of pattern shape adjustment is higher, and the single pattern layer with various requirements can be realized only by changing the area and the shape of the curing light in the lampshade.

Simultaneously, the curing device is used for introducing steam of ink solvent with stable concentration into a curing area, so that the volatilization rate in the ink curing process is ensured to be consistent, and the generation of a coffee ring effect is further reduced.

Further or more detailed benefits will be described in connection with specific embodiments.

Drawings

FIG. 1 is a schematic view of a curing apparatus according to example 1;

FIG. 2 is a schematic view of the curing apparatus according to example 1 at another angle;

fig. 3 is a schematic distribution diagram of an ink solvent tank, a steam gas path and a flow rate regulating valve in the curing apparatus according to example 2;

FIG. 4 is a topography of an ink stick after the introduction of a concentration-stabilized ink solvent vapor;

FIG. 5 is a schematic view of the morphology of a "coffee ring" formed by curing an ink stick under a conventional atmosphere;

in the figure:

3.2-carrier plate, 3.3-curing lamp, 3.4-lamp shade, 3.41-illumination regulation hole, 3.5-printing ink solvent storage tank, 3.6-steam gas circuit, 3.61-solvent steam outlet, 3.7-flow control valve, 3.8-base plate.

Detailed Description

In order to make the objects, features and advantages of the present utility model more comprehensible, the technical solutions in the embodiments of the present utility model are described in detail below with reference to the accompanying drawings, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present application, it should be noted that the azimuth or positional relationship indicated by the terms "upper", "lower", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of description of the present application and simplification of the description, and do not indicate or imply that the apparatus or element in question must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.

Unless specifically stated or limited otherwise, the terms "connected," "affixed," "disposed" and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; the two components can be connected mechanically, directly or indirectly through an intermediate medium, or internally. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.

The core technical problem faced by the technical scheme of the embodiment of the application comes from the deep knowledge of the inventor on the technical problem in the prior art.

Therefore, on the basis of the deep knowledge of the technical problem, how to realize uniform surface light emission in each scene, especially in the application scene of new energy is a technical problem to be solved by the inventor.

Meanwhile, the expansion of the process application range for preparing different types of coatings is also a technical problem which the inventor intends to solve synchronously.

The examples are detailed below:

example 1:

referring to fig. 1-2, an infrared curing lamp 3.3 is arranged above a carrier plate 3.2 in the curing device, a lamp shade 3.4 is arranged between the curing lamp 3.3 and the carrier plate 3.2, an illumination adjusting hole 3.41 is formed in the lamp shade 3.4, an illumination passage of the curing lamp 3.3 is opened up by the illumination adjusting hole 3.41, and the distance between the lamp shade 3.4 and the curing lamp 3.3 and the distance between the lamp shade 3.4 and a substrate 3.8 are adjustable to assist in adjusting the illumination range;

the adjustment mode of the interval between the lampshade 3.4 and the substrate 3.8 can be, for example:

a servo motor (also can be a linear motor) is arranged at the position of the outer shell of the curing equipment corresponding to the height of the lampshade 3.4, the servo motor drives a sliding block through a screw rod, and the sliding block is connected with the inner lampshade 3.4, so that stepless adjustment within a certain interval range can be realized;

the adjustment mode can also be as follows:

the inside of the curing device is provided with a plurality of layers of clamping groove structures with different heights, and the lampshade 3.4 is arranged on the clamping grooves with different heights according to actual process requirements so as to realize different distances between the lampshade 3.4 and the substrate 3.8.

The curing method of the embodiment is as follows:

s1: performing ink-jet printing on a substrate, wherein an overlapping area exists between ink points formed by each printed ink drop and adjacent ink points so as to form a continuous image layer;

s2: the method comprises the steps that a radiation light irradiation area is limited through a lampshade provided with a light irradiation adjusting hole, so that a curing speed differential area is formed, wherein the curing speed in the radiation light irradiation area is faster than that in other areas;

s3: the radiation source acts on the successive layers to cause the solute in the successive layers to migrate from the fast curing region to the slow curing region.

The substrate 3.8 coated with the pattern layer is arranged on the carrier plate 3.1 and is cured below the curing lamp 3.3, and the curing conditions can be as follows: curing at 150 ℃ for 15min.

In the embodiment, the layer reached by the illumination of the curing lamp 3.3 is easier to absorb the illumination energy, the solvent in the printing ink of the layer volatilizes faster, the concentration of the solute is higher than that of other areas, under the driving action of the concentration difference of the solute, the solute diffuses towards the area with lower concentration, so that a single layer with different thickness (solute content) is formed, the position of the illumination can be set according to the actual requirement, and the thickness distribution of the single layer is adjusted; the flexibility of pattern shape adjustment is larger in the technical scheme, a single pattern layer with various requirements can be realized only by changing the area and the shape of the cured light in the lampshade, and the substrate 3.8 with the reflectivity smooth transition reflecting surface is obtained and can be generally used for a new energy Mini-LED backlight diffusion plate.

Example 2:

referring to fig. 1 to 3, the curing device for the coating with different thickness used in the present embodiment adds a structure of introducing ink solvent vapor with stable concentration into the curing area based on the technical scheme of embodiment 1:

besides the carrier plate 3.2, the curing device is also provided with an ink solvent storage tank 3.5, a steam gas circuit 3.6 and a flow regulating valve 3.7 arranged between the ink solvent storage tank 3.5 and the steam gas circuit 3.6;

wherein, be provided with in the printing ink solvent storage tank 3.5 with the same solvent of printing ink on the base plate 3.8, printing ink solvent storage tank 3.5 and bottom heating source 3.2 interval get away, and heat through independent heat source to convenient control, the upper surface interval of steam gas circuit 3.6 is equipped with a plurality of solvent steam outlet 3.61, and the solidification condition can be: curing at 150 ℃ for 15min.

The curing method of the embodiment is as follows:

s1: performing ink-jet printing on a substrate, wherein an overlapping area exists between ink points formed by each printed ink drop and adjacent ink points so as to form a continuous image layer;

s2: the method comprises the steps that a radiation light irradiation area is limited through a lampshade provided with a light irradiation adjusting hole, so that a curing speed differential area is formed, wherein the curing speed in the radiation light irradiation area is faster than that in other areas;

s3: the radiation source acts on the continuous layer to migrate solutes in the continuous layer from the fast cure zone to the slow cure zone and to introduce saturated ink solvent vapor into the cure zone during the cure process.

In this embodiment, the solvent vapor outlet 3.61 is used to introduce the solvent vapor of the ink with saturated concentration into the curing area, so as to ensure the consistent volatilization rate in the ink curing process, and further reduce the occurrence of the "coffee ring" effect.

The above-mentioned "coffee ring" effect refers to: after liquid coherence, the solid phase substance in the liquid phase substance can leave a stain, the stain is unevenly distributed, and the edge part is more than the middle part, so that the phenomenon of annular spots is formed.

In addition, taking the example of the coating morphology of the ink-jet printed ink-lump, the effect of the solvent vapor of the ink with stable concentration on the coating morphology of the ink-lump is compared, and referring to fig. 4 and 5:

after the solvent vapor of the ink with stable concentration is introduced, the morphology graph of the ink block is shown in fig. 4, and fig. 5 is a schematic diagram of the morphology of a coffee ring formed by curing the same ink under a conventional atmosphere by comparison, wherein fig. 4 and 5 are laser altimetry graphs, and the length of each grid on the ordinate is: 0.0025mm, length per grid on abscissa: the distance the probe moves every 500 milliseconds;

as can be seen from a comparison of fig. 4 and fig. 5, the cured ink dots formed after the ink solvent vapor with stable concentration is introduced have a regular shape, the annular peripheral solute aggregation of coffee is not formed, the defect of uneven surface caused by shrinkage of folds is overcome, the upper surface of the cured ink dots is relatively flat, and the light reflection effect is stable.

In summary, the utility model can form the pattern layer with thickness difference by the curing device itself in various ways, and the thickness is uniform, meanwhile, the curing device can introduce the steam of the ink solvent with stable concentration into the curing area, thereby guaranteeing the consistent volatilization rate in the ink curing process, and further reducing the generation of the coffee ring effect.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

While the utility model has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model as defined by the appended claims. Equivalent embodiments of the present utility model will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the utility model; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present utility model still fall within the scope of the technical solution of the present utility model.

The above examples are provided to illustrate the disclosed embodiments of the utility model and are not to be construed as limiting the utility model. While the utility model has been specifically described in connection with various specific preferred embodiments thereof, it should be understood that the utility model should not be unduly limited to such specific embodiments. Indeed, various modifications of the described modes for carrying out the utility model which are obvious to those skilled in the art are intended to be within the scope of the present utility model.

Claims (10)

1. A light-irradiated curing apparatus, comprising:

a curing light (3.3) for providing irradiated light;

the carrier plate (3.2) is used for carrying an object to be solidified, and the carrier plate (3.2) is arranged in the irradiation range of the solidifying lamp (3.3);

the lamp shade (3.4) is used for limiting the region of light irradiation, lamp shade (3.4) set up in between curing lamp (3.3) and carrier plate (3.2), illumination regulation hole (3.41) have been seted up on lamp shade (3.4), illumination regulation hole (3.41) have opened the light irradiation route of curing lamp (3.3).

2. The curing apparatus of claim 1, wherein: the lampshade also comprises an adjusting mechanism for adjusting the vertical position of the lampshade (3.4).

3. The curing apparatus of claim 2, wherein: the adjusting mechanism comprises a motor, a screw rod and a sliding block;

the motor is a servo motor or a linear motor, the motor drives the sliding block through the screw rod, and the sliding block is connected with the lampshade (3.4).

4. The curing apparatus of claim 2, wherein: the adjusting mechanism comprises a plurality of layers of clamping grooves with different heights, and the clamping grooves are used for accommodating the lampshade (3.4).

5. The curing apparatus of claim 1, wherein: the illumination adjusting holes (3.41) are round through holes arranged on the lampshade (3.4) at intervals.

6. The curing apparatus of claim 1, wherein: the curing lamp (3.3) is a lamp for emitting infrared rays.

7. The curing apparatus of any one of claims 1-6, further comprising:

an ink solvent reservoir (3.5) for storing a solvent for the ink;

and the steam gas circuit (3.6) is used for releasing steam generated after the ink solvent storage tank (3.5) is heated into the curing area, and the steam gas circuit (3.6) is communicated with the ink solvent storage tank (3.5) through a flow regulating valve (3.7).

8. The curing apparatus of claim 7, wherein: the ink solvent reservoir (3.5) is heated by an independent heat source.

9. The curing apparatus of claim 7, wherein: the steam gas circuit (3.6) comprises a plurality of branch gas circuits, and the branch gas circuits are mutually parallel and are arranged at the same horizontal position at intervals.

10. The curing device of claim 7 or 9, wherein: the steam gas circuit (3.6) is provided with solvent steam outlets (3.61), and the solvent steam outlets (3.61) are uniformly and alternately arranged on the upper surface of the steam gas circuit (3.6).