Curing equipment and coating system

Abstract

The utility model provides curing equipment and a coating system. The curing equipment comprises a first box body, a second box body, a conveying unit, a first curing lamp unit, a second curing lamp unit, a third curing lamp unit, a fourth curing lamp unit, a PLC control unit and a human-computer interface control unit, wherein the PLC control unit is connected with the human-computer interface control unit; the number of the ultraviolet lamps of the first curing lamp unit is greater than that of the ultraviolet lamps of the second curing lamp unit, the third curing lamp unit and the fourth curing lamp unit; the distance between the first curing lamp unit and the plane where the conveying unit is located is L1, the distance between the second curing lamp unit and the plane where the conveying unit is located is L2, and the ratio of L1 to L2 is 2-3. According to the curing equipment, the stripping force of the base material and the adhesive layer on the two sides of the prepared membrane can be the same or similar.

Description

Technical Field

[0001] The present disclosure relates to a curing device, and more particularly to a curing device and a coating system. Background Art

[0002] Quantum dot films are usually composed of several film layers. After the quantum dot glue is coated on the substrate and the roll-to-roll process is completed for lamination, the quantum dot glue is finally cured by ultraviolet light. In existing curing devices, multiple ultraviolet light sources are arranged at equal intervals, and the distances between the upper and lower ultraviolet light sources and the quantum dot film on the conveying unit are basically the same, so as to achieve uniform distribution of light intensity. Summary of the Utility Model

[0003] An object of the present disclosure is to provide a curing device and a coating system to solve the problem that when using an existing curing device, the bonding strength between some quantum dot glue and the same substrates on both sides during curing is quite different, and the side with low peel force results in a short product life of the quantum dot film. Brief Description of the Drawings

[0004] The accompanying drawings forming a part of this application are used to provide a further understanding of the present disclosure. The schematic embodiments and descriptions thereof of the present disclosure are used to explain the present disclosure and do not constitute an improper limitation to the present disclosure. In the drawings:

[0005] Figure 1 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0006] Figure 2 It is a signal transmission schematic diagram of a curing device according to an embodiment of the present disclosure.

[0007] Figure 3 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0008] Figure 4 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0009] Figure 5 It is a signal transmission schematic diagram of a curing device according to an embodiment of the present disclosure.

[0010] Figure 6 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0011] Figure 7 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0012] Figure 8 It is a structural diagram of a curing device according to an embodiment of the present disclosure.

[0013] Description of the Reference Numerals:

[0014] Specification

[0015] 1. First box body; 2. Second box body; 31. First bracket; 32. Second bracket; 33. Third bracket; 34. Fourth bracket; 41. Conveyor wheel; 42. Conveyor belt; 43. Conveyor roller; 51. First curing lamp unit (ultraviolet lamp); 52. Second curing lamp unit (ultraviolet lamp); 53. Third curing lamp unit (ultraviolet lamp); 54. Fourth curing lamp unit (ultraviolet lamp); 61. White glass; 71. Temperature probe; 72. Temperature probe; 73. Temperature probe; 74. Temperature probe; 82. First cooling device; 84. Second cooling device.

[0016] Note that the circuit control structure in the above structural diagram of the curing device is not shown. In the embodiments described below, sometimes the same reference numerals are used commonly between different drawings to represent the same part or parts having the same function, and the repeated description thereof is omitted. In some cases, if an item is defined in one drawing, it will not be described repeatedly in the subsequent drawings.

[0017] For ease of understanding, the positions, sizes, ranges, etc. of the various structures shown in the drawings and the like sometimes do not represent the actual positions, sizes, ranges, etc. Therefore, the present disclosure is not limited to the positions, sizes, ranges, etc. disclosed in the drawings and the like. Detailed Embodiments

[0018] The following will describe in detail various exemplary embodiments of the present disclosure with reference to the drawings. It should be noted that: Unless otherwise specifically stated, the relative arrangements, numerical expressions, and numerical values of the components and steps set forth in these embodiments do not limit the scope of the present disclosure.

[0019] The description of at least one exemplary embodiment below is actually merely illustrative and in no way limits the present disclosure and its application or use. That is, the structures and methods herein are shown in an exemplary manner to illustrate different embodiments of the structures and methods in the present disclosure. However, those skilled in the art will understand that they merely illustrate the exemplary ways in which the present disclosure can be implemented, rather than exhaustive ways. In addition, the drawings do not have to be drawn to scale, and some features may be enlarged to show the details of specific components.

[0020] In addition, technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the said technologies, methods, and devices should be regarded as part of the authorized specification.

[0021] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Therefore, other examples of the exemplary embodiments may have different values.

[0022] In the description and claims, words such as "left", "right", "front", "rear", "top", "bottom", "upper", "lower", "higher", "lower", etc., if present, are used for descriptive purposes and not necessarily to describe a fixed relative position. It should be understood that such words are interchangeable under appropriate circumstances, so that the embodiments of the present disclosure described herein, for example, can operate in other orientations different from those shown or otherwise described herein. For example, when the device in the drawings is inverted, a feature originally described as "above" other features can then be described as "below" the other features. The device can also be oriented in other ways (rotated 90 degrees or in other orientations), and the relative spatial relationships will be correspondingly interpreted.

[0023] In the description and claims, when an element is referred to as being "above", "attached" to, "connected" to, "coupled" to, or "operatively coupled" to another element, etc., the element can be directly above, directly attached to, directly connected to, directly coupled to, or directly operatively coupled to the other element, or there can be one or more intervening elements. In contrast, when an element is referred to as being "directly" above, "directly attached" to, "directly connected" to, "directly coupled" to, or "directly operatively coupled" to another element, there will be no intervening elements. In the description and claims, a feature is arranged "adjacent" to another feature, which can mean that the feature has a portion overlapping with the adjacent feature or a portion above or below the adjacent feature.

[0024] As used herein, the word "exemplary" means "serving as an example, instance, or illustration", rather than as a "model" to be precisely replicated. Any implementation described herein as exemplary is not necessarily to be construed as preferred or advantageous over other implementations. Moreover, the present disclosure is not limited by any theory expressed or implied in the technical field, background art, summary of the utility model, or detailed description.

[0025] As used herein, the word "substantially" means including any minute variations caused by design or manufacturing defects, tolerances of devices or components, environmental effects, and / or other factors. The word "substantially" also allows for differences from a perfect or ideal situation due to parasitic effects, noise, and other practical considerations that may exist in an actual implementation.

[0026]

[0027] ​Additionally, for reference purposes only, terms such as "first", "second", etc. may also be used in this document and are not intended to be limiting. For example, unless the context clearly indicates otherwise, the terms "first", "second", and other such numerical terms referring to structures or elements do not imply an order or sequence.

[0028] It should also be understood that when the term "comprising / including" is used in this document, it indicates the presence of the stated features, wholes, steps, operations, units, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, units, and / or components and / or their combinations.

[0029] In this disclosure, the term "provide" is used broadly to cover all ways of obtaining an object. Thus, "providing an object" includes, but is not limited to, "purchasing", "preparing / manufacturing", "arranging / setting", "installing / assembling", and / or "ordering" the object, etc. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. The terms used herein are for the purpose of describing particular embodiments only and are not intended to limit this disclosure. As used herein, the singular forms "a", "an", and "the" are also intended to include the plural forms unless the context clearly indicates otherwise.

[0030] The inventors found that when individual quantum dot glues are made into a quantum dot film in a sandwich structure, the bonding force between the quantum dot glue layer and the two substrates is different, i.e., one side is high and the other side is low. In some specific examples, the peel forces on both sides differ greatly. The peel force of one layer is as low as 0.2 - 0.3 N / 25 mm, while the peel force of the other layer is as high as >5 N / 25 mm, with a difference of more than 25 times between the two. The higher bonding strength can prevent the quantum dot film from separating due to external forces during subsequent cutting, assembly aging, and application processes. Because after separation, the quantum dot film cannot utilize the high oxygen and water vapor barrier properties of the substrate (barrier film), and thus the quantum dots in the quantum dot glue layer are prone to failure, affecting their fluorescence performance. Therefore, it is necessary to solve the problem of the large difference in peel forces on both sides of the quantum dot film. Through experiments, the inventors speculated that the side with a small peel force is mainly because there is a small gap between the substrate on that side and the quantum dot glue layer during the curing process of the quantum dot glue layer and the substrate on the other side, resulting in insufficient contact between the quantum dot glue and the primer of the substrate, and thus the curing reaction strength is not as high as that on the other side.

[0031] According to another aspect of the present disclosure, a curing device is provided. Figure 1 An example is shown, and the curing device includes:

[0032] Specification

[0033] The first box body 1 and the second box body 2, with openings relatively provided on the left and right side surfaces of the first box body 1 and the second box body 2 respectively; the first box body 1 includes a relatively arranged first bracket 31 and a second bracket 32, which are respectively located in the upper and lower parts inside the first box body 1; the second box body 2 includes a relatively arranged third bracket 33 and a fourth bracket 34, which are respectively located in the upper and lower parts inside the second box body 2;

[0034] The conveying unit, horizontally arranged in the middle of the first box body 1 and the second box body 2, and the conveying unit passes through all the openings;

[0035] The first curing lamp unit 51 is spacedly arranged on the surface of the first bracket 31 close to the conveying unit, and the first curing lamp unit 51 includes A ultraviolet lamps arranged in sequence along the horizontal direction;

[0036] The second curing lamp unit 52 is spacedly arranged on the surface of the second bracket 32 close to the conveying unit, and the second curing lamp unit 52 includes B ultraviolet lamps arranged in sequence along the horizontal direction; the orthographic projection of the first curing lamp unit 51 on the plane where the conveying unit is located does not overlap with the orthographic projection of the second curing lamp unit 52 on the plane where the conveying unit is located;

[0037] The third curing lamp unit 53 is spacedly arranged on the surface of the third bracket 33 close to the conveying unit, and the third curing lamp unit 53 includes C ultraviolet lamps arranged in sequence along the horizontal direction;

[0038] The fourth curing lamp unit 54 is spacedly arranged on the surface of the fourth bracket 34 close to the conveying unit, and the fourth curing lamp unit 54 includes D ultraviolet lamps arranged in sequence along the horizontal direction; the orthographic projection of the third curing lamp unit 53 on the plane where the conveying unit is located does not overlap with the orthographic projection of the fourth curing lamp unit 54 on the plane where the conveying unit is located;

[0039] The working power of all ultraviolet lamps is the same, where A is greater than B, A is greater than C, and A is greater than D; the arrangement density of the A ultraviolet lamps along the horizontal direction is greater than the arrangement density of the B ultraviolet lamps along the horizontal direction;

[0040] The distance from the first curing lamp unit 51 to the plane where the conveying unit is located is L1, and the distance from the second curing lamp unit 52 to the plane where the conveying unit is located is L2, and the ratio of L1 / L2 is 2 - 3;

[0041] The PLC control unit, and the PLC control unit controls the on and off of the ultraviolet lamps;

[0042] The human - machine interface control unit, and the PLC control unit is connected to the human - machine interface control unit.

[0043] In the above-mentioned curing equipment, there are two independent boxes, with different curing lamp units set to control the curing conditions at different times. The sum of the number of ultraviolet lamps of the first curing lamp unit 51 and the second curing lamp unit 52 in the first box 1 is relatively large, corresponding to the curing of the first period (early stage) of the diaphragm. The curing reaction in the early stage is faster than that in the later stage. The sum of the number of ultraviolet lamps of the third curing lamp unit 53 and the fourth curing lamp unit 54 in the second box 2 is relatively small, corresponding to the curing of the second period (later stage) of the diaphragm, avoiding a large temperature change (sudden temperature drop) when the diaphragm exits the box, which may cause poor appearance of the diaphragm. The projections of the ultraviolet lamps in the upper and lower parts of the box do not overlap, so that the ultraviolet radiation can cover the entire diaphragm to be cured more evenly. Regarding the problem of different bonding forces on both sides inside the diaphragm, if L1 is 2 to 3 times that of L2, the bonding of the corresponding adhesive layer and the substrate near the ultraviolet lamp side of the lower box can be strengthened. Moreover, the arrangement density of the ultraviolet lamps in the first curing lamp unit 51 is higher. According to the observed rule, increasing the ultraviolet lamp density in the upper part has a more obvious effect on strengthening the bonding strength of the corresponding adhesive layer and the substrate near the ultraviolet lamp side of the lower box, and can also strengthen the bonding of the corresponding adhesive layer and the substrate near the ultraviolet lamp side of the lower box. Through the above two aspects, the above-mentioned curing equipment can make the

[0044] peeling force between the substrates and the adhesive layers on both sides of the prepared diaphragm the same or similar (within a 20% difference or within 10%). Figure 2 The signal transmission relationship between the structures of the curing equipment is shown, and the functions of signal transmission include control and feedback.

[0045] There is no particular limitation on the structure of the above-mentioned bracket, including but not limited to the structure shown in the drawings. In some embodiments, the conveying unit includes a conveying wheel 41 and a conveyor belt 42, as shown in the attached Figure 1 figure. In some other embodiments, the conveying unit includes a plurality of conveying rollers 43, as shown in the attached Figure 3 figure. The dotted line represents the plane where the conveying unit is located. It should be noted that the supporting structure of the conveying unit is not shown in the attached Figure 3 figure.

[0046] In some embodiments, the bracket is made of a material with good thermal conductivity.

[0047] In some embodiments, the early-stage curing temperature is 60 - 80 °C, and the later-stage curing temperature is 40 - 50 °C.

[0048] In some embodiments, the curing device further includes a plurality of temperature probes, which are respectively arranged at the upper and lower parts of the first box body 1 and the upper and lower parts of the second box body 2; the temperature probes (71, 72, 73, 74) are electrically connected to the signal input end of the PLC control unit. In some embodiments, a plurality of temperature probes are equally arranged at the upper and lower parts of the first box body 1, and a plurality of temperature probes (71, 72, 73, 74) are equally arranged at the upper and lower parts of the second box body 2, so as to more accurately grasp the temperature information inside the box body, and the temperature of the temperature probes is fed back to the PLC control unit.

[0049] In some embodiments, as Figure 4 shown, a plurality of temperature probes (71, 72, 73, 74) are arranged on the left and right sides of the box body to avoid inaccurate measurement due to being too close to the ultraviolet lamp of the curing lamp unit. The temperature probes are mainly used to detect the temperature of the air inside the box body, and this temperature is close to the temperature of the diaphragm surface.

[0050] In some embodiments, it further includes: a first cooling device 82 arranged inside the first box body 1; and a second cooling device 84 arranged inside the second box body 2. The PLC control unit is further used to output cooling on / off signals and temperature adjustment signals, so as to control the opening and cooling degree of the first cooling device 82 and the second cooling device 84. When the actual temperature measured by the temperature probes (71, 72, 73, 74) exceeds the preset ranges of 60 - 80 °C and 40 - 50 °C, the PLC control unit inputs a start signal to the cooling device for temperature reduction adjustment; when the temperature reaches the preset range, the PLC control unit inputs a shutdown signal to the cooling device, and the cooling device stops operating. The first cooling device 82 and the second cooling device 84 can operate independently. Figure 5 Shows the signal transmission relationship between the various structures of the curing device and the control unit.

[0051] As Figure 6 shown, in some embodiments, the first cooling device 82 is arranged at the lower part inside the first box body 1; the second cooling device 84 is arranged at the lower part inside the second box body 2. In some embodiments, there can be multiple first cooling devices 82, which are evenly distributed at the lower part of the first box body 1; there can be multiple second cooling devices 84, which are evenly distributed at the lower part of the second box body 2. In some embodiments, each cooling device and each ultraviolet lamp are arranged at intervals. In some embodiments, each cooling device is outside the second bracket 32 or the fourth bracket 33 for better refrigeration.

[0052] In some embodiments, the sum of A and B is 6 - 20, and the sum of C and D is 4 - 10. It is selected according to the specific type of the ultraviolet lamp, service life, volume of the curing device, etc.

[0053] Specification

[0054] In some embodiments, as Figure 7 shown, the light-emitting side of A ultraviolet lamps has a slot structure, and a white glass 61 is disposed in the corresponding slot structure. The white glass 61 absorbs heat to prevent the temperature of the diaphragm in the box from being too high during long-term use of the ultraviolet lamps, which may cause poor appearance, such as curling. Of course, the connection manner between the white glass 61 and the ultraviolet lamps is not limited to the slot structure.

[0055] In some embodiments, as Figure 8 shown, B ultraviolet lamps do not have an additional white glass 61, so as to increase the conversion of light energy into heat energy, appropriately increase the temperature at the lower part of the box, and improve the reaction temperature of the adhesive layer / glue of the diaphragm on the conveying unit and the undercoat of the lower substrate. In some embodiments, the light-emitting sides of C ultraviolet lamps and D ultraviolet lamps both have a slot structure, and a white glass 61 is disposed in the corresponding slot structure.

[0056] In some embodiments, as Figure 8 shown, the second bracket 32 and the fourth bracket 34 each include two separate parts.

[0057] In some embodiments, the spacing between C ultraviolet lamps is equal, and the spacing between D ultraviolet lamps is equal.

[0058] In some embodiments, the spacing between C ultraviolet lamps is equal to the spacing between D ultraviolet lamps, and the spacing is 40 - 60 cm.

[0059] In some embodiments, the spacing between A ultraviolet lamps is 10 - 40 cm.

[0060] In some embodiments, the spacing between B ultraviolet lamps is 40 - 60 cm.

[0061] In some embodiments, the first box body 1 and the second box body 2 have the same height. In some embodiments, the height of both is 150 - 250 cm.

[0062] In some embodiments, the above curing device further includes a support structure to keep the two box bodies away from the ground.

[0063] In some embodiments, the distance between the third curing lamp unit 53 and the plane where the conveying unit is located is L3, and the distance between the second curing lamp unit 52 and the plane where the conveying unit is located is L4. The ratio of L3 / L4 is equal to L1 / L2.

[0064] According to another aspect of the present disclosure, a coating machine system is provided, including the curing device of any one of the above. The coating machine system is used for the preparation of quantum dot films. The prepared quantum dot films have good appearance, similar peeling forces on both sides, and good service life.

[0065] The above quantum dot film is a multi-layer film structure, including a quantum dot adhesive layer and other film layers on both sides.

[0066] Although some specific embodiments of the present disclosure have been described in detail by way of examples, those skilled in the art should understand that the above examples are for illustrative purposes only and not for limiting the scope of the present disclosure. The embodiments disclosed herein can be combined arbitrarily without departing from the spirit and scope of the present disclosure. Those skilled in the art should also understand that various modifications can be made to the embodiments without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims

1. A curing device, characterized in that: include: A first box body and a second box body, wherein openings are provided on the left and right sides of the first box body and the second box body respectively; the first box body comprises a first bracket and a second bracket which are arranged oppositely and are respectively located at the upper part and the lower part of the first box body; the second box body comprises a third bracket and a fourth bracket which are arranged oppositely and are respectively located at the upper part and the lower part of the second box body; A conveying unit, horizontally arranged in the middle of the first box body and the second box body, and the conveying unit passes through all the openings; A first curing lamp unit is arranged at intervals on a surface of one side of the first bracket close to the transmission unit, and the first curing lamp unit includes A ultraviolet lamps arranged in sequence along a horizontal direction; A second curing lamp unit is arranged at intervals on a surface of one side of the second bracket close to the transmission unit, and the second curing lamp unit includes B ultraviolet lamps arranged in sequence along a horizontal direction; The orthographic projection of the first curing light unit on the plane where the conveying unit is located does not overlap with the orthographic projection of the second curing light unit on the plane where the conveying unit is located; A third curing lamp unit is arranged at intervals on a side surface of the third bracket close to the transmission unit, and the third curing lamp unit includes C ultraviolet lamps arranged in sequence along the horizontal direction; a fourth curing lamp unit, arranged at intervals on a side surface of the fourth bracket close to the conveying unit, the fourth curing lamp unit comprising D ultraviolet lamps arranged in sequence along a horizontal direction; an orthographic projection of the third curing lamp unit on the plane where the conveying unit is located does not overlap with an orthographic projection of the fourth curing lamp unit on the plane where the conveying unit is located; The working power of all ultraviolet lamps is the same, wherein A is greater than B, A is greater than C, and A is greater than D; the arrangement density of the A ultraviolet lamps in the horizontal direction is greater than the arrangement density of the B ultraviolet lamps in the horizontal direction; The distance between the first curing lamp unit and the plane where the transmission unit is located is L1, the distance between the second curing lamp unit and the plane where the transmission unit is located is L2, and the ratio of L1 / L2 is 2-3; A PLC control unit, wherein the PLC control unit controls the switch of the ultraviolet lamp; A human-machine interface control unit, the PLC control unit is connected to the human-machine interface control unit.

2. The curing device according to claim 1, characterized in that: The curing device further comprises a plurality of temperature probes, which are respectively arranged at the upper and lower parts of the first box body and the upper and lower parts of the second box body; The signal input terminal of the PLC control unit is electrically connected.

3. The curing device according to claim 2, characterized in that: Also includes: The first cooling device is arranged in the first box body; and the second cooling device is arranged in the second box body. The PLC control unit is also used to output a cooling shutdown signal and a temperature adjustment signal to control the opening and cooling degree of the first cooling device and the second cooling device.

4. The curing device according to claim 3, characterized in that: The first cooling device is arranged at the lower part of the first box body; the second cooling device is arranged at the lower part of the second box body.

5. The curing device according to claim 1, characterized in that: The sum of A and B is 6-20, and the sum of C and D is 4-10.

6. The curing device according to claim 1, characterized in that: The light emitting side of the A ultraviolet lamps has a slot structure, and white glass is arranged in the corresponding slot structure.

7. The curing device according to claim 6, characterized in that: The light emitting sides of the C ultraviolet lamps and the D ultraviolet lamps are provided with a slot structure, and white glass is arranged in the corresponding slot structures.

8. The curing device according to claim 1, characterized in that: The C ultraviolet lamps are spaced at equal intervals, and the D ultraviolet lamps are spaced at equal intervals.

9. The curing device according to claim 8, characterized in that: The spacing between the C UV lamps is equal to the D The distance between the ultraviolet lamps is 40 to 60 cm.

10. A coating machine system, characterized in that: Comprising the curing equipment according to any one of claims 1 to 9, the coater system is used for preparing quantum dot films.

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