WO2023125191A1

WO2023125191A1 - Uv dip dyeing apparatus

Info

Publication number: WO2023125191A1
Application number: PCT/CN2022/140665
Authority: WO
Inventors: 周文强; 吴剑; 谢梦瑶; 万雅琦
Original assignee: 青岛海尔创新科技有限公司; 海尔智家股份有限公司
Priority date: 2021-12-28
Filing date: 2022-12-21
Publication date: 2023-07-06
Also published as: CN116351640A

Abstract

A UV dip dyeing apparatus, which relates to the technical field of panels of household appliances, and comprises: a main dyeing tank (100), wherein dye can uniformly flow from bottom to top in the main dyeing tank (100); and a lifting assembly, which comprises a lifting part and a shelving part. The shelving part is arranged above the main dyeing tank (100) and is used for vertically shelving a substrate (301), at least part of a surface of which has a UV adhesive layer; and the lifting part is connected to the shelving part and is used for driving, by means of the shelving part, the substrate to gradually descend in the main dyeing tank (100) in a reciprocating inching manner, such that the dye dip-dyes the surface of the substrate (301) having the UV adhesive layer. The lifting assembly drives the substrate (301) to gradually descend in a reciprocating inching manner into the dye that uniformly flows from bottom to top, such that the dye dynamically and uniformly dyes the UV adhesive layer on a ready-for-dyeing surface. Therefore, the dyeing effect is more natural, the ready-for-dyeing surface has excellent light transmittance, and the probability of an invalid area with uneven dip dyeing is effectively reduced by performing dip dyeing.

Description

UV dipping equipment

This application is based on a Chinese patent application with application number 202111629016.5 and a filing date of December 28, 2021, and claims the priority of this Chinese patent application. The entire content of this Chinese patent application is hereby incorporated by reference into this application.

technical field

This application relates to the technical field of home appliance panels, and discloses a UV dipping equipment, including: a main dyeing tank, which can form a dye that flows uniformly from bottom to top; a lifting assembly, including a lifting part and a resting part; Above the main dyeing tank, it is used to vertically place the original film with a UV glue layer on at least part of the surface; The inside of the main dyeing tank is gradually lowered, so that the dyestuff can reach the surface of the original film with the UV glue layer. The lifting component drives the original film to gradually descend in the dye flowing evenly from bottom to top, so that the dye is dynamically and evenly dipped onto the UV adhesive layer on the pre-dyed surface, the dyeing effect is more natural and the pre-dyed surface has excellent light transmission properties, and dipping sufficiently reduces the probability of non-uniform dipping voids.

Background technique

The panel appearance of home appliances directly affects the user's visual experience, and as the size of home appliances becomes larger, the area of the panel increases accordingly. The panels of home appliances are mostly made of resin or glass. For larger panels, people usually use screen printing technology to color the panels. Screen printing technology makes meshes with graphics on the original film. When printing, pour high-temperature ink on one end of the original film, and use a scraper to scrape the other end of the original film to make the high-temperature ink squeeze out from the mesh. No mesh Part of the ink cannot pass through to achieve printing. However, the use of screen printing causes dense small holes to exist on the original film, and there is a problem that it is easy to scratch.

The prior art discloses a method for processing mobile phone panels. Firstly, the dyeing liquid is prepared according to the target color to be processed, and then the original film is subjected to UV transfer printing, and the original film after UV transfer is put into the dyeing liquid. The dyeing solution is reacted and colored, and finally the dyed panel is obtained by adjusting the dipping parameters such as the dipping time, dipping temperature and pH. In this way, the original film is placed in the dyeing solution after UV transfer printing, and there is no need to set small holes in the original film and there is no problem of scratching.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in related technologies:

The area of the panel of the mobile phone is very small. If there is an invalid area with unsatisfactory dyeing in the obtained dyed panel, the invalid area can be directly cut off. The panels of home appliances are much larger than those of mobile phones. If an invalid area appears in an original film, the original film will be directly invalidated. And in the above-mentioned dip-dyeing technique, the original film is always soaked in the dyeing solution, so the dyeing of the dyed panel is unnatural and the light transmittance is not good. The panels of home appliances have higher requirements on the ineffective area and light transmittance after dyeing, and the above-mentioned dip-dyeing technology cannot meet the requirements of the panels of home appliances on the dyeing quality.

Contents of the invention

In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is presented below. The summary is not intended to be an extensive overview nor to identify key/important elements or to delineate the scope of these embodiments, but rather serves as a prelude to the detailed description that follows.

The embodiment of the present disclosure provides a UV dip-dyeing equipment, which solves the problems of unnatural dyeing, poor light transmittance and many invalid areas of the dyed panel obtained by the immersion-type UV dip-dyeing process.

In some embodiments, the UV dipping equipment includes:

The main dye tank, which can form a uniform flow of dye from bottom to top;

The lifting assembly includes a lifting part and a shelving part; the shelving part is arranged above the main dyeing tank for vertically shelving the original film with a UV glue layer on at least part of the surface; the lifting part is connected to the shelving part, The original film is used to drive the original film back and forth in the main dyeing tank step by step through the resting part, so that the dye can be dyed to the surface of the original film with the UV glue layer.

Optionally, the shelving part includes:

The dip-dye shelf is configured as a permeable frame so that the dye can flow through the dip-dye shelf to the original film.

Optionally, the shelving part also includes:

The holding spring is vertically arranged on one side of the original sheet, and one end is fixed to the dipping shelf, and the other end can straddle the original sheet to tighten the original sheet vertically and then fix it.

Optionally, the lifting part includes:

The lifting frame includes two lifting rods; the two lifting rods are respectively connected to both sides of the dipping shelf;

The lifting motor is connected to the two lifting rods through the lifting transmission component, and when the lifting motor rotates, the lifting transmission component drives the two lifting rods to rise and fall synchronously;

The controller controls the rotation speed of the lifting motor according to the dyeing type of the original film, thereby adjusting the inching speed of the lifting rod.

Optionally, when the dyeing type is monochrome, the controller controls the lifting rod to descend step by step at a constant speed reciprocating and jogging through the lifting motor.

Optionally, in the case that the dyeing type is monochromatic gradient, the controller controls the lifting rod to gradually descend at various speeds through the lifting motor.

Optionally, the lifting rod is arranged in the side partition of the main dyeing tank;

The lifting motor is arranged in the bottom partition wall of the main dyeing tank.

Optionally, the flow rate of the dye in the main dyeing tank is greater than or equal to 0.8 L/s and less than or equal to 1.2 L/s, so that the dye can be evenly dyed on the original sheet.

Optionally, the temperature of the dye in the main dyeing tank is greater than or equal to 85°C and less than or equal to 90°C.

Optionally, the pH value of the dye in the main dyeing tank is greater than or equal to 5 and less than or equal to 9.

A UV dip-dyeing equipment provided in an embodiment of the present disclosure can achieve the following technical effects:

The lifting part drives the vertically placed original sheet to reciprocate and jog down gradually in the dye of the main dyeing tank through the shelving part, and the dye in the main dyeing tank flows evenly from bottom to top, so that the dye can be dynamically and evenly dipped to the surface of the pre-dyed surface. On the UV adhesive layer, the dyeing effect is more natural and the pre-dyed surface has excellent light transmission. With the continuous reciprocating inching of the original film and the gradual decline of the overall relative to the main dyeing tank, the dye can be fully dipped onto the UV adhesive layer to reduce the probability of ineffective areas with uneven dipping, so as to meet the requirements of large-area home appliances. Dyeing quality requirements.

The foregoing general description and the following description are exemplary and explanatory only and are not intended to limit the application.

Description of drawings

One or more embodiments are exemplified by the corresponding drawings, and these exemplifications and drawings do not constitute a limitation to the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, The drawings are not limited to scale and in which:

Fig. 1 is a schematic structural view of UV dipping equipment provided by an embodiment of the present disclosure;

Fig. 2 is a schematic structural view of a main dyeing tank and a circulation tank provided by an embodiment of the present disclosure;

Figure 3 is a top view of the main dyeing tank provided by an embodiment of the present disclosure;

Figure 4 is a sectional view of the main dyeing tank provided by an embodiment of the present disclosure;

Fig. 5 is a schematic structural view of a dip-dyeing shelf provided by an embodiment of the present disclosure;

Fig. 6 is a schematic structural diagram of a lifting part provided by an embodiment of the present disclosure;

Fig. 7 is a schematic structural diagram of a lifting part provided by an embodiment of the present disclosure;

Fig. 8 is a schematic flow chart of a method for preparing a dyed panel provided by an embodiment of the present disclosure;

9 is a schematic flow chart of another method for preparing a dyed panel provided by an embodiment of the present disclosure;

Figure 10 is a schematic flow chart of another method for preparing a dyed panel provided by an embodiment of the present disclosure;

Fig. 11 is a schematic flow chart of another method for preparing a dyed panel provided by an embodiment of the present disclosure;

Figure 12 is a schematic flow chart of another method for preparing a dyed panel provided by an embodiment of the present disclosure;

Fig. 13 is a schematic flowchart of another method for preparing a dyed panel provided by an embodiment of the present disclosure;

Fig. 14 is a schematic flowchart of another method for preparing a dyed panel provided by an embodiment of the present disclosure.

Reference signs:

100: main dyeing tank; 101: inner tank; 102: outer tank; 103: backflow gap; 110: dye tank; 111: agitator; 112: heater; 120: circulation tank; 121: circulation port; 130: pure water tank ; 140: ultrasonic cleaning tank; 150: first cleaning tank; 160: second cleaning tank; 170: water removal tank;

200: main circulation pump; 210: hole mesh plate; 220: secondary circulation pump; 230: heating rod;

300: Dipping rack; 301: Original film; 310: Holding spring; 320: Lifting rod; 330: Lifting motor; 340: Water removal shelf; 350: Lifting rod; 360: Lifting motor; 370: The first transmission chain ; 380: first gear train.

Detailed ways

In order to understand the characteristics and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure will be described in detail below in conjunction with the accompanying drawings. The attached drawings are only for reference and description, and are not intended to limit the embodiments of the present disclosure. In the following technical description, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown simplified in order to simplify the drawings.

The terms "first", "second" and the like in the description and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. It should be understood that the data so used may be interchanged under appropriate circumstances so as to facilitate the embodiments of the disclosed embodiments described herein. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion.

In the embodiments of the present disclosure, the orientations or positional relationships indicated by the terms "upper", "lower", "inner", "middle", "outer", "front", "rear" etc. are based on the orientations or positional relationships shown in the drawings. Positional relationship. These terms are mainly used to better describe the embodiments of the present disclosure and their implementations, and are not used to limit that the indicated devices, elements or components must have a specific orientation, or be constructed and operated in a specific orientation. Moreover, some of the above terms may be used to indicate other meanings besides orientation or positional relationship, for example, the term "upper" may also be used to indicate a certain attachment relationship or connection relationship in some cases. Those skilled in the art can understand the specific meanings of these terms in the embodiments of the present disclosure according to specific situations.

In addition, the terms "setting", "connecting" and "fixing" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or an indirect connection through an intermediary, or two devices, components or Internal connectivity between components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present disclosure according to specific situations.

Unless stated otherwise, the term "plurality" means two or more.

In the embodiments of the present disclosure, the character "/" indicates that the preceding and following objects are an "or" relationship. For example, A/B means: A or B.

The term "and/or" is an associative relationship describing objects, indicating that there can be three relationships. For example, A and/or B means: A or B, or, A and B, these three relationships.

It should be noted that, in the case of no conflict, the embodiments and the features in the embodiments of the present disclosure may be combined with each other.

An embodiment of the present disclosure provides a method for preparing a dyed panel, as shown in FIG. 8 , including the following process steps:

S10: coating and curing a UV adhesive layer on the pre-dyed surface of the original film 301;

S20: Place the original sheet 301 vertically above the main dyeing tank 100, and form a dye that flows evenly from bottom to top in the main dyeing tank 100;

S30: Control the original sheet 301 to descend gradually in the dyestuff of the main dyeing tank 100 by reciprocating and jogging, so that the dyestuff is dipped to the pre-dyeing surface to obtain a dyed panel.

Using the method for preparing the dyed panel provided by the embodiment of the present disclosure, the main dyeing tank 100 adopts the dye flowing from bottom to top, and the original sheet 301 moves back and forth in the dye, so that the moving direction of the original sheet 301 is parallel to the direction of water flow and the flow of the dye The flow rate is uniform, so that the dye can be dynamically and uniformly dipped onto the UV adhesive layer of the pre-dyed surface, the dyeing effect is more natural and the pre-dyed surface has excellent light transmission. As the original film 301 is continuously reciprocating and inching and the whole is gradually lowered relative to the main dyeing tank 100, the dye can be fully dyed on the UV adhesive layer, reducing the probability of ineffective areas with uneven dyeing, so as to meet the needs of large-area household appliances. The panel of the product requires a staining quality. It can be seen that for the preparation process of the dyed panel, it is particularly important to control the flow rate of the dye and the movement of the original sheet 301 .

In order to realize the above-mentioned process steps, as shown in FIG. 1 , an embodiment of the present disclosure provides a UV exhaust dyeing device, including a dye treatment component, a pretreatment component, a dip dyeing component, an even flow component and a post-treatment component.

Optionally, the dye treatment assembly includes a dye tank 110 and a stirring and heating device. The stirring and heating device includes a stirrer 111 and a heater 112 arranged in the dye tank 110. The user places the dye in the dye tank 110 according to the ratio, turns on the stirrer 111 to stir the dye, and turns on the heater 112 at the same time to heat the dye. Mix well to formulate desired color.

Optionally, as shown in FIG. 2 , the dip dyeing assembly includes a main dyeing tank 100 . The main dyeing tank 100 includes an inner tank 101 and an outer tank 102, wherein the inner tank 101 is connected to the dye tank 110, and the dyes arranged in the dye tank 110 are passed into the inner tank 101; the outer tank 102 is sleeved outside the inner tank 101, and the outer A backflow gap 103 is formed between the groove wall of the groove 102 and the groove wall of the inner groove 101 . The dye in the inner tank 101 overflows into the backflow gap 103 after being filled, so that the dye flowing in the inner tank 101 is formed.

Optionally, both the inner tank 101 and the outer tank 102 are configured as rectangular tanks, the inner tank 101 is arranged in the outer tank 102 and the tank walls of the two are parallel to each other, and the distance between the tank walls is the same, so that the backflow gap 103 of the same width. The notch height of the outer tank 102 is higher than that of the inner tank 101 , so as to prevent the dye in the backflow gap 103 from flowing out from the notch of the outer tank 102 to the outside.

Optionally, the uniform flow assembly includes a pump body and a uniform flow. The pump body part includes a main circulation pump 200 , and a plurality of injection ports are evenly opened at the bottom of the inner tank 101 along the extension direction of the inner tank 101 . In the case that the main circulation pump 200 has one pump inlet and one pump outlet, one main circulation pump 200 is correspondingly provided for each injection port. Moreover, the pump inlet of each main circulation pump 200 is connected to the dye tank 110 , and the pump outlet of each main circulation pump 200 is connected to the corresponding injection port. In the case that the main circulation pump 200 has one pump inlet and multiple pump outlets, the pump inlet communicates with the dye tank 110 , and the multiple pump outlets communicate with the multiple injection ports correspondingly. This pumps the configured dye in the dye tank 110 into the inner tank 101 .

Further, optionally, the flow rate of each pump outlet is the same. In this way, the injection port is evenly opened at the bottom of the inner tank 101 and the flow rate of each pump outlet is the same, which ensures that a plurality of pump outlets evenly pumps the dye into the inner tank 101 through the corresponding injection port.

Optionally, as shown in FIG. 3 and FIG. 4 , the even flow part includes a hole mesh plate 210 . The perforated net plate 210 is horizontally mounted on the lower part of the inner tank 101 and can cover the entire bottom surface of the inner tank 101 . The dyestuff is pumped into the inner tank 101 through multiple pump outlets to form a water column. The multiple water columns are buffered by the hole screen 210 and spread evenly to the lower part of the inner tank 101 through the uniformly arranged mesh holes. The diffused dye is released from the inner tank The lower part of 101 flows upwards, and finally overflows evenly from around the opening of the inner tank 101 to the return gap 103 . By rationally arranging the position of the injection port, controlling the flow of multiple pump outlets and setting the hole screen 210, it is ensured that the dye in the inner tank 101 can flow evenly from bottom to top.

Optionally, the flow rate of the dye in the inner tank 101 is greater than or equal to 0.8 L/s and less than or equal to 1.2 L/s. In the case of ensuring that the dye can flow evenly from bottom to top, the control of the dye flow is also very important. There are differences in the viscosity of different dyes, and it is difficult to obtain a dyed panel with high dyeing quality if the flow rate is too large or the flow rate is too small. And control the flow rate of the dyestuff between 0.8L/s-1.2L/s, cooperate with the original sheet 301 to reciprocate and inching to gradually decrease, can realize the excellent dip-dyeing effect.

Optionally, the dipping component further includes a circulation unit. The circulation part includes a circulation tank 120 and a secondary circulation pump 220 , wherein the circulation tank 120 communicates with the backflow gap 103 , the inlet of the secondary circulation pump 220 communicates with the circulation tank 120 , and the outlet of the secondary circulation pump 220 communicates with the inner tank 101 . The dyestuff overflowing from the inner tank 101 into the backflow gap 103 enters the circulation tank 120, and the dye in the circulation tank 120 returns to the inner tank 101 by the secondary circulation pump 220, so that Constitutes the dye cycle.

Optionally, the circulation tank 120 is configured as a rectangular tank body, and one outer tank 102 surface of the circulation tank 120 is disposed against the outer tank 102 surface of the outer tank 102 .

Optionally, as shown in FIG. 2 , the tank wall of the circulation tank 120 is provided with a circulation port 121 , and the height of the circulation port 121 is lower than that of the inner tank 101 . The tank wall of the outer tank 102 is provided with an outflow port, and the outflow port and the circulation port 121 are arranged opposite to each other. When the circulation tank 120 abuts against the outer tank 102 , the circulation port 121 and the outflow port are in contact. Because the height of the circulation port 121 is lower than the notch height of the inner tank 101 , the dye in the backflow gap 103 can be prevented from flowing back into the inner tank 101 . When the dye in the backflow gap 103 gradually increases and does not pass through the outflow port, the dye will automatically enter the circulation tank 120 through the outflow port and the circulation port 121 under the action of gravity.

Optionally, the circulation port 121 is disposed on the upper part of the circulation tank 120 , and the inlet port of the secondary circulation pump 220 is connected to the lower part of the circulation tank 120 . Because the dye has a certain viscosity and the temperature is higher, a large amount of foam will be generated when the dye continuously overflows from around the notch of the inner tank 101 to the backflow gap 103. If the dye in the backflow gap 103 is directly re-passed into the inner tank 101, It will cause foam to appear in the inner tank 101, and the foam in the inner tank 101 will make the dye unable to evenly hang color on the original sheet 301, and color spots will appear on the original sheet 301 when the foam bursts. By setting the circulation port 121 on the upper part of the circulation tank 120, when the dye flows from the backflow gap 103 to the circulation tank 120, the foam in the backflow gap 103 also enters the circulation tank 120 and accumulates in the upper part of the circulation tank 120. By setting the inlet end of the secondary circulation pump 220 at the bottom of the circulation tank 120, the dye without foam in the bottom of the circulation tank 120 returns to the bottom of the inner tank 101, passes through the perforated screen plate 210 again from the bottom of the inner tank 101, and evenly flow. Here, there may be one or more outlets of the secondary circulation pump 220 . In the case of multiple outlets of the secondary circulation pump 220 , the multiple outlets uniformly inject the dye into the bottom of the inner tank 101 . In this way, by arranging the circulation tank 120 and rationally setting the setting position of the circulation port 121 and the communication relationship of the secondary circulation pump 220, the circulation of the dye can be realized while the foam can be prevented from entering the inner tank 101 with the circulation of the dye, and the stability of the original film 301 is further improved. Stain quality.

Optionally, the dip dyeing assembly further includes an electric heating rod 230 disposed at the bottom of the inner tank 101 , and the electric heating rod 230 heats the dye in the inner tank 101 when energized. A temperature sensor is provided in the inner tank 101 , and the temperature of the dye will drop during the circulation of the dye in the inner tank 101 . The temperature of the dye in the inner tank 101 needs to be maintained between 85° C. and 90° C. When the temperature sensor detects that the temperature of the dye has dropped, the temperature of the dye can be maintained by starting the electric heating rod 230 .

Optionally, the circulation assembly further includes a pure water tank 130 , which stores pure water and communicates with the inner tank 101 . The pH value of the dye needs to be maintained between 5-9, and the inner tank 101 is provided with a pH detector. When the pH detector detects that the pH value of the dye is less than 5, the pure water tank 130 is opened to feed pure water into the inner tank 101 so as to neutralize the dye and reduce the influence of the pH change of the dye on the dyeing effect.

Optionally, as shown in FIG. 5 , the lifting assembly includes a resting part. The shelving portion is disposed above the inner tank 101 and is used for shelving the original film 301 vertically. The shelving part includes a dip dyeing shelf 300, which is configured as a frame that is permeable all around, which can reduce the large disturbance caused by the shelf to the flow of the dye when moving, so that the dye in the inner tank 101 can pass through the dip dyeing shelf 300 flows to the original film 301, so as to hang color on the surface of the original film 301 with the UV adhesive layer.

Optionally, the dipping rack 300 is configured as a rectangular frame, and the bottom area of the dipping rack 300 is smaller than that of the rectangular inner tank 101 , so that the dipping rack 300 can move up and down in the inner tank 101 smoothly. The bottom of the dipping rack 300 is provided with a U-shaped clamping base with an opening facing to facilitate vertically clamping the original film 301 through the U-shaped opening. Since the dip-dyeing shelf 300 is a rectangular frame, the original sheet 301 can also be bound and fixed against the inner sidewall of the dip-dyeing shelf 300 using cable ties.

Optionally, the resting part further includes one or more holding springs 310 . The holding spring 310 is vertically arranged on one side of the original sheet 301 and one end is fixed to the dipping rack 300 , and the other end of the holding spring 310 can be pulled across the original sheet 301 to vertically tighten the original sheet 301 and fix it. The holding base and the holding spring 310 can be used together. The lower end of the holding spring 310 is fixed on one side of the original sheet 301. After holding the original sheet 301 on the holding base, pull the upper end of the holding spring 310 and cross the original sheet. The sheet 301 is fastened to the other side of the original sheet 301 and then fixed, thereby effectively fixing the original sheet 301 .

Optionally, as shown in FIG. 6 , the lifting assembly further includes a lifting part. The lifting part includes a lifting frame, a lifting motor 330 and a controller. The lifting frame includes two lifting rods 320; the two lifting rods 320 are respectively connected to the two sides of the dipping shelf 300; the lifting motor 330 is connected to the two lifting rods 320 through the lifting transmission assembly, and the lifting motor 330 is driven by the lifting transmission assembly when rotating The two elevating rods 320 are synchronously lifted; the controller controls the rotation speed of the elevating motor 330 according to the dyeing type of the original film 301, thereby adjusting the inching speed of the elevating rod 320. When the lifting motor 330 rotates, it drives the two lifting rods 320 to rise or fall synchronously, the lifting rod 320 drives the dipping rack 300 to rise and fall synchronously, and the dipping rack 300 drives the original film 301 to rise and fall synchronously. Like this controller controls lift motor 330 to rise when forward rotation, fall when reverse rotation, or decline when forward rotation, rise when reverse rotation;

In order to facilitate the understanding of the process of reciprocating inching and the inching speed, here is an example in which the lifting rod 320 drives the original sheet 301 to gradually descend from the top of the dye liquid surface at an inching speed of 1mm/s:

The initial position of the original sheet 301 is set so that the lower edge of the original sheet 301 is in contact with the dye liquid surface, and the process of the original sheet 301 successively completing a 1mm drop, rise and fall is called a reciprocating jog.

First, the original sheet 301 is ready to descend. After the original sheet 301 completes one reciprocating jog from the initial position, that is, after the plate surface 1s with a height of 1 mm at the lower edge of the original sheet 301 completes the first decline, rise and fall process, the lower part of the original sheet 301 The edge of the 1mm high panel is dipped in the dye. Then, the original sheet 301 carries out the second reciprocating inching movement. After the original sheet 301 is positioned at the 1 mm high plate surface above the liquid level and completes the first decline, rise and descent process, the 2 mm high plate surface of the original sheet 301 lower edge is immersed in the dye middle. Then, the original sheet 301 is reciprocated for the third time. After the original sheet 301 is located at the 1mm high plate surface above the liquid level and completes the first decline, rise and fall process, the 3mm high plate surface at the lower edge of the original sheet 301 is immersed in the dye middle. By analogy, the original film 301 moves back and forth and gradually descends until it completely drops below the dye liquid level. Finally, the original sheet 301 is directly lifted above the dye liquid level, and the original sheet 301 does not reciprocate and jog when it is lifted here, that is, the dipping of one original sheet 301 is completed.

It can be understood that if the inching speed is 2 mm/s, the plate surface 1 s of the original sheet 301 located at a height of 2 mm above the dye liquid level completes the first descending, ascending and descending process. And in the case of uniform flow of dye in the inner tank 101, the inching speed can be regarded as the dyeing speed. During the reciprocating inching process of the original sheet 301, the dye flowing from bottom to top gradually hangs on the original sheet 301, and the color of the dyed panel obtained by dynamic dip-dyeing is more natural than the color of the dyed panel obtained by always dipping in dye , and exhibit better light transmission.

Optionally, the lifting transmission assembly includes a second transmission chain, two second racks and two second gear trains. Wherein, the two second racks are respectively arranged on the two lifting rods 320 along the lifting direction of the original film 301; the two second gear trains are meshed and connected to the two second racks respectively; In the second gear train, the lifting motor 330 is connected to the second transmission chain. The gear shaft of the lifting motor 330 is connected to the second transmission chain. When the lifting motor 330 is started, the gear shaft rotates to drive the second transmission chain to rotate synchronously; the second transmission chain drives the two second gear trains to rotate synchronously, and the two second gear trains The elevating rod 320 is driven up and down by the correspondingly meshed second rack, and the elevating rod 320 drives the original sheet 301 to elevate synchronously through the dewatering shelf 340 . Thereby, the original film 301 is gradually lowered in a reciprocating and inching manner.

In some embodiments, as shown in FIG. 9 , in step S30, the original sheet 301 is controlled to reciprocate and jog to gradually descend in the dye in the main dyeing tank 100, so that the dye is fully dyed to the pre-dyed surface to obtain a dyed panel, including:

S31: Control the original film 301 to gradually descend at a constant speed reciprocating and jogging to obtain the primary dyed panel;

S32: lifting the first-dyeing panel above the dye, and turning the first-dyeing panel upside down;

S33: Continue to control the initial dyeing panel to gradually descend in a reciprocating and inching manner at a constant speed to obtain a single-color dyeing panel.

Since the original sheet 301 is not always soaked in the dye in the inner tank 101, but vertically descends from the top of the dye liquid level to the bottom of the dye in a reciprocating inching manner, the time for the lower part of the original sheet 301 to be in the dye is longer than that for the upper part. The time in the dye is longer. The controller controls the elevating rod 320 to reciprocate and inching at a constant speed by controlling the elevating motor 330 to gradually descend to obtain a pre-dyed panel. The lower part of the pre-dyed panel has the darkest color and gradually becomes lighter upwards. After the primary dyed panel is lifted out of the dye liquid level and turned upside down, and then gradually lowered at a constant speed, the color of the upper part of the original dyed panel gradually deepens, and finally the primary dyed panel is lifted above the dye to obtain a monolithic uniform color. Colored stained panels.

Exemplarily, the original sheet 301 is a glass substrate of 600 mm×600 mm, and the dyeing speed is controlled to be 2 mm/s. The original film 301 is driven by the lifting rod 320 to reciprocate and inch at the dyeing speed from above the dye liquid surface to gradually drop below the dye liquid surface to obtain the primary dyed panel, and then directly lift the primary dyed panel above the dye liquid surface and place the primary dye The panel is upside down. Then control the inverted primary dyeing panel with the dyeing speed to move back and forth and gradually lower, and finally lift the primary dyeing panel directly out of the dye liquid level to obtain a single-color dyeing panel with uniform color.

In some embodiments, in step S30, the original sheet 301 is controlled to descend gradually in the dyestuff of the main dyeing tank 100 in a reciprocating and jogging manner, so that the dyestuff is dipped to the pre-dyed surface to obtain a dyed panel, including:

The original film 301 is controlled to descend gradually in reciprocating and jogging at various speeds to obtain a single-color gradient dyeing panel.

Although the color of the primary dyed panel obtained when the original sheet 301 is inching at a constant speed and not inverted is also a gradient color, the gradient effect cannot be adjusted, and the recognition is average, which cannot meet the various gradient requirements of users for colors. The controller controls the lifting motor 330 to control the lifting rod 320 to reciprocate and jog at various speeds, that is, to adjust the dyeing speed of the original film 301, which can effectively adjust the color gradient effect, so that the original film 301 presents a gradient color that meets the user's needs .

Exemplarily, the original sheet 301 is an acrylic substrate of 600mm×600mm, the area from the lower edge to 50mm is called the first area, the area from 50mm to 100mm is called the second area, the area from 100mm to 150mm is called the third area, and the area from 150mm to 150mm is called the third area. 200mm is called the fourth zone, 200mm-250mm is called the fifth zone, 250mm-300mm is called the sixth zone, and 300mm-600mm is called the seventh zone. The original film 301 is controlled to be dyed at the following dyeing speeds in the above-mentioned areas by the lifting assembly: dyeing at a speed of 0.2 mm/s in the first area; dyeing at a speed of 0.5 mm/s in the second area; dyeing at a speed of 0.8 mm/s in the third area Dyeing at a speed of mm/s; dyeing at a speed of 1.3mm/s in the fourth area; dyeing at a speed of 2mm/s in the fifth area; dyeing at a speed of 3mm/s in the sixth area; dyeing at a speed of 5mm in the seventh area /s speed dyeing. In this way, due to the different dyeing speeds in each region, the gradient effect in each region is different. In this way, the overall gradient effect of the original film 301 is effectively adjusted by controlling the dyeing speed in each region. Adopting the above-mentioned dyeing speed can make the original film 301 present a gradient effect from dark to light with better recognition from bottom to top.

In some embodiments, the pre-dyed surface is divided into an upper region and a lower region below the upper region. As shown in Figure 10, in step S30, control the original sheet 301 to gradually descend in the dye in the main dyeing tank 100 in a reciprocating and inching manner, so that the dye can be fully dyed to the pre-dyed surface to obtain a dyed panel, including:

S34: Control the lower area of the original film 301 to gradually descend in a reciprocating and inching manner, so that the dye can be dyed to the lower area;

S35: Lift the original sheet above the dye, replace the dye in the main dyeing tank 100 with another color, and invert the original sheet 301 so that the upper area of the original sheet 301 faces downward;

S36 : Controlling the upper area of the original sheet 301 to gradually descend in a reciprocating and jogging manner, so that the dye of another color is dipped into the upper area, thereby obtaining a two-color dyed panel.

In this way, the upper area of the original film 301 is a gradient color, and the lower area is another gradient color. A uniform dyeing speed or different dyeing speeds can be used for dyeing the lower region, and the same is true for the upper region. So as to greatly meet the user's demand for color.

Exemplarily, the original sheet 301 is an acrylic substrate of 600mm×600mm. In order to obtain a dyed panel with a two-color area ratio of 6:4 and a pink-blue gradient, dyeing is carried out at the following dyeing speed:

First, use pink dye in the inner tank 101 to dye from the edge of the lower area of the original sheet 301 to 50mm at a dyeing speed of 2mm/s; continue to dye to 100mm at a dyeing speed of 2.5mm/s; continue to dye at 3mm/s Dye at a dyeing speed of 150mm; continue to dye at a dyeing speed of 3.5mm/s to 200mm; continue to dye at a dyeing speed of 5mm/s to 300mm;

Then, the original sheet is lifted above the dye, the original sheet 301 is inverted and the pink dye in the inner tank 101 is replaced with a blue dye, dyeing from the edge of the upper area of the original sheet 301 to 30mm at a dyeing speed of 1mm/s; Dye at a dyeing speed of 1.5mm/s to 60mm; continue to dye at 90mm at a dyeing speed of 2.2mm/s; continue to dye at 120mm at a dyeing speed of 3.2mm/s; continue to dye at a dyeing speed of 5mm/s to 240mm.

Adopting the above dyeing speed can present a more recognizable pink gradient effect on the lower area of the original film 301, and a more recognizable blue gradient effect on the upper area, thereby obtaining a two-color dyed panel.

As shown in FIG. 11 , an embodiment of the present disclosure provides another method for preparing a dyed panel, including:

S40: Ultrasonic cleaning the original sheet 301;

Here, the pretreatment component of the UV exhaust dyeing equipment includes an ultrasonic cleaning tank 140. Putting the original film 301 into the ultrasonic cleaning tank 140 and using ultrasonic waves can effectively clean the pre-dyed surface of the original film 301, which is convenient for subsequent coating of UV adhesive layer. Here, the embossing method can be used to emboss the UV adhesive layer with various textures on the original film. The combination of the texture effect and the dyeing effect greatly improves the recognition of the home appliance panel.

In conjunction with what is shown in Figure 12, the embodiment of the present disclosure provides another method for preparing a dyed panel, including:

S30: Control the original film 301 to gradually descend in the dye in the main dyeing tank 100 in reciprocating and inching motion, so that the dye can be dipped to the pre-dyed surface to obtain a dyed panel;

S50: Put the dyed panel into the first cleaning tank 150 filled with pure water to clean the residual dye on the surface.

Here, the post-processing component includes a cleaning device, and the cleaning device includes a first cleaning tank 150, and the first cleaning tank 150 is filled with pure water. Put the dyed panel into the first washing tank 150 and use pure water to wash unadhered dye remaining on the surface of the dyed panel.

In conjunction with what is shown in Figure 13, an embodiment of the present disclosure provides another method for preparing a dyed panel, including:

S50: Put the dyed panel into the first cleaning tank 150 filled with pure water to clean the residual dye on the surface;

S60: Put the dyed panel into the second cleaning tank 160 filled with cleaning agent to further clean the residual dye on the surface.

The cleaning device here also includes a second cleaning tank 160, and the second cleaning tank 160 is filled with a cleaning agent. Put the dyed panels washed with pure water in the first washing tank 150 into the second washing tank 160 and use detergent to further clean the dyed panels. The dyed panel is first put into the first cleaning tank 150 and then into the second cleaning tank 160, so as to avoid damaging the dyeing effect by washing directly with detergent.

In conjunction with what is shown in Figure 14, the embodiment of the present disclosure provides another method for preparing a dyed panel, including:

S70: Removing residual water after washing on the stained panel.

The dyed panel is obtained after dipping the original sheet 301 through the dip dyeing assembly, and then the dyed panel is cleaned by the first cleaning tank 150 and the second cleaning tank 160. After the dyed panel is cleaned twice, the surface of the dyed panel and the UV glue layer and There will be different degrees of residual water in the gaps between the original sheets 301 .

In order to remove residual water on the surface of the dyed panel, the UV dipping equipment provided in the embodiment of the present disclosure is provided with a water removal tank 170 and a water removal device. Wherein, the inside of the water removal tank 170 can contain pure water, and the water removal device includes a lifting part and a placing part. The placing part is disposed in the water removal tank 170 for vertically placing the dyeing panel. After the dyed panel is put into the water removal tank 170 through the placing part, the pure water absorbs the residual water on the surface of the dyed panel. The lifting part is connected to the placing part, and is used to drive the dyeing panel to be lifted from the water removal tank 170 through the placing part. During the process of slowly lifting the dyeing panel, the pure water adsorbed with residual water will detach itself under the action of gravity, and Pure water will not leave water marks, and effectively removes residual water on the surface without destroying the dyeing effect.

Optionally, the temperature of the pure water in the water removal tank 170 is greater than or equal to 70°C and less than or equal to 90°C. Pure water in this temperature range has good surface tension, which can effectively absorb the residual water on the surface of the dyed panel.

Optionally, the time for the dyed panels to be completely lifted out of the water surface from the water removal tank 170 is greater than or equal to 3 minutes and less than or equal to 6 minutes. The lifting time should not be too long or too short, and a better dehydration effect can be achieved by controlling the lifting time within this range.

Optionally, the placement part includes a water removal rack 340 . The dewatering shelf 340 is configured as a permeable frame around, so that the pure water in the dewatering tank 170 enters into the dewatering shelf 340 to absorb the residual water on the surface of the original sheet 301 .

Optionally, the placing part further includes a holding base. The clamping base is configured as an upward U-shaped structure with an opening, and the dyeing panel can be clamped vertically by the U-shaped opening of the clamping base.

Optionally, as shown in FIG. 7 , the lifting part includes a lifting frame and a lifting motor 360 . Wherein, the lifting frame includes two lifting rods 350, and the two lifting rods 350 are respectively connected to both sides of the water removal shelf 340; the lifting motor 360 is connected to the two lifting rods 350 through the lifting transmission assembly, and when the lifting motor 360 rotates, it passes The transmission assembly drives the two lifting rods 350 to lift vertically synchronously. The upper ends of the two lifting rods 350 are respectively connected to two sides of the dewatering rack 340 and disposed in the side partition of the dewatering tank 170 . The lifting motor 360 is disposed in the bottom partition wall of the water removal tank 170 .

Optionally, the lifting transmission assembly includes a first transmission chain 370 , two first racks and two first gear trains 380 . Among them, the two first racks are respectively arranged on the two lifting rods 350 along the lifting direction of the dyeing panel; the two first gear trains 380 are respectively meshed and connected to the two first racks; the first transmission chain 370 is connected to the two The first gear train 380 and the lifting motor 360 are connected to the first transmission chain 370 . The gear shaft of the lifting motor 360 is connected to the first transmission chain 370. When the lifting motor 360 is started, the gear shaft rotates to drive the first transmission chain 370 to rotate synchronously; the first transmission chain 370 drives the two first gear trains 380 to rotate synchronously. The first gear train 380 drives the elevating rod 350 to elevate through the correspondingly engaged first rack, and the elevating rod 350 drives the dyeing panel to elevate synchronously through the dewatering shelf 340 .

Optionally, the dewatering device further includes a dryer, and after the dyed panel removes residual water on the surface in the dewatering tank 170 through the lifting part, the dyed panel is put into the dryer. The residual water in the gap between the UV adhesive layer and the original film 301 is removed by drying with a dryer. In this way, the dyeing panel is driven by the lifting part to lift and remove the residual water on the surface in the water removal tank 170, and then the residual water in the gap between the UV adhesive layer and the original film 301 is dried by the dryer, so that the two water removal processes can be effectively Reduce the influence of residual water on the dyeing effect of dyed panels.

The embodiment of the present disclosure also provides a dyed panel, which is prepared according to the above-mentioned preparation method of the dyed panel.

The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may incorporate structural and other changes. The examples merely represent possible variations. Individual components and functions are optional unless explicitly required, and the order of operations may vary. Portions and features of some embodiments may be included in or substituted for those of other embodiments. Embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A kind of UV exhaust dyeing equipment is characterized in that, comprising:

The main dye tank, which can form a uniform flow of dye from bottom to top;

The lifting assembly includes a lifting part and a shelving part; the shelving part is arranged above the main dyeing tank for vertically shelving the original film with a UV glue layer on at least part of the surface; the lifting part is connected to the shelving part, The original film is used to drive the original film back and forth in the main dyeing tank step by step through the resting part, so that the dye can be dyed to the surface of the original film with the UV glue layer.
The UV dipping equipment according to claim 1, characterized in that, the shelving part comprises:

The dip-dye shelf is configured as a permeable frame so that the dye can flow through the dip-dye shelf to the original film.
The UV dipping equipment according to claim 2, wherein the shelving part further comprises:

The holding spring is vertically arranged on one side of the original sheet, and one end is fixed to the dipping shelf, and the other end can straddle the original sheet to tighten the original sheet vertically and then fix it.
The UV dipping equipment according to claim 2 or 3, wherein the lifting part comprises:

The lifting frame includes two lifting rods; the two lifting rods are respectively connected to both sides of the dipping shelf;

The lifting motor is connected to the two lifting rods through the lifting transmission component, and when the lifting motor rotates, the lifting transmission component drives the two lifting rods to rise and fall synchronously;

The controller controls the rotation speed of the lifting motor according to the dyeing type of the original film, thereby adjusting the inching speed of the lifting rod.
UV exhaust dyeing equipment according to claim 4, is characterized in that,

In the case that the dyeing type is monochrome, the controller controls the lifting rod to reciprocate and inching at a constant speed to gradually descend through the lifting motor.
UV exhaust dyeing equipment according to claim 4, is characterized in that,

In the case that the dyeing type is monochromatic gradient, the controller controls the lifting rod to gradually descend at multiple speeds by reciprocating and jogging through the lifting motor.
UV exhaust dyeing equipment according to claim 4, is characterized in that,

The lifting rod is arranged in the side partition of the main dyeing tank;

The lifting motor is arranged in the bottom partition wall of the main dyeing tank.
According to the UV exhaust dyeing equipment described in any one of claims 1 to 3, it is characterized in that,

The flow rate of the dye in the main dyeing tank is greater than or equal to 0.8 L/s and less than or equal to 1.2 L/s, so that the dye can be evenly dyed on the original sheet.
According to the UV exhaust dyeing equipment described in any one of claims 1 to 3, it is characterized in that,

The temperature of the dye in the main dyeing tank is greater than or equal to 85°C and less than or equal to 90°C.
According to the UV exhaust dyeing equipment described in any one of claims 1 to 3, it is characterized in that,

The pH value of the dye in the main dyeing tank is greater than or equal to 5 and less than or equal to 9.