Production equipment of gradient color window film base material

Abstract

The utility model relates to production equipment of a gradient color window film base material, which comprises a dye vat and a support, the dye vat is used for containing dyeing liquid, the support is arranged above the dye vat in a vertically movable mode, the support is provided with a supporting arm extending downwards, and the lower end of the supporting arm is connected with a guide roller used for supporting a film and transversely conveying the film. The guide rollers are transversely arranged in the direction perpendicular to the conveying direction of the thin film and at least comprise the first guide roller and the second guide roller which are different in vertical height, and the first guide roller and the second guide roller can be restrained on the supporting arm in the axial direction in an up-down inclined mode. When entering the dye vat, the to-be-dyed film obliquely enters the dyeing liquid in the width direction, the depths of all positions of the film in the width direction in the dyeing liquid are different, the retention time of the film conveyed at a constant speed in the dyeing liquid in the width direction is different due to the different depths, and the effect that the film gradually changes from deep to light in a single color can be achieved; according to the utility model, continuous production is realized through a simple structure, and the production cost can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of window film dyeing technology, specifically to a production equipment for a gradient color window film substrate. Background Technology

[0002] Currently, various types of films are widely used in the market. These include gradient color films, which are generally produced using magnetron sputtering deposition to create a gradient effect from one color to another or more colors. For example, Chinese patent CN113403593B, "Gradient Color Film and its Preparation Method and Application," describes the magnetron sputtering deposition of a film layer with gradient thickness onto a film substrate, achieving a gradient color effect based on the principle of optical interference. Chinese patent application CN112048699A, "A Method for Preparing a Gradient PET Film," describes depositing a refractive index material layer onto a PET film, with the material layer consisting of alternating high and low refractive index material layers, thereby producing a gradient color effect through light refraction.

[0003] The gradient color window film prepared by the above-mentioned existing technology is not only complicated in preparation process and requires huge equipment investment, but also the gradient color effect is formed by refracting light under the premise that the film itself has a special structure, and cannot be formed by dyeing alone. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a production equipment for obtaining a gradient color window film substrate with a simplified gradient color film structure, which is in view of the current situation of the prior art. This equipment can realize continuous production, reduce production costs, and improve the dyeing stability of the film.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows:

[0006] A production device for a gradient color window film substrate includes a dyeing vat and a support. The dyeing vat is used to hold dyeing liquid. The support is movably positioned above the dyeing vat. The support has a downwardly extending support arm. The lower end of the support arm is connected to a guide roller for supporting the film and conveying it laterally. The guide roller is arranged laterally perpendicular to the conveying direction of the film and includes at least a first guide roller and a second guide roller with different vertical heights. The first guide roller and the second guide roller are inclined vertically along their axial direction and constrained on the support arm.

[0007] Preferably, the first and second guide rollers constrain the dyeing support area as the support descends, and the film is located in the dyeing vat when it is conveyed to this dyeing support area. This structure facilitates control of the film's dyeing position and size. For example, by controlling the height of the support's descent, the size of the film immersed in the dyeing solution in the direction perpendicular to the film's conveying length, i.e., the width direction of the film, can be controlled to obtain a film of a set dyeing size.

[0008] Preferably, the tilt angle of the first guide roller and the second guide roller is 30° to 60°. By setting this angle, the conveying speed at different points along the width of the film can be controlled, thereby controlling the dyeing time at different points along the width of the film to obtain a better gradient dyeing effect.

[0009] Preferably, the connection points between the first guide roller, the second guide roller, and the corresponding support arm are equipped with adjusting components that can adjust their tilt angles. This adjusting component can be a connecting block that can swing up and down relative to the support arm. A rotating shaft cooperating with the guide roller is constrained on the side of this connecting block. After the swing position relative to the support arm is adjusted, the connecting block can be locked in place by bolts. This structure facilitates the adjustment of the tilt angles of the first and second guide rollers to match the corresponding dyeing time and temperature, achieving the best gradient dyeing effect.

[0010] Preferably, from a side view, the dyeing support area is constrained into a V-shaped, U-shaped, or S-shaped structure. This structure facilitates the immersion of specific portions of the film in the dyeing solution, allowing for easier control of the dyeing dimensions.

[0011] Preferably, the system further includes a third guide roller. The lower end of the first guide roller is located at the lowest point. The second and third guide rollers are respectively arranged on both sides of the first guide roller, and the lower ends of both the second and third guide rollers are higher than the lower end of the first guide roller. This structure facilitates the guiding and conveying of the film at different heights in a symmetrical manner relative to the first guide roller, improving the stability and reliability of film conveying.

[0012] Preferably, the system further includes an unwinding roller, a drying mechanism, and a rewinding roller. The unwinding roller is positioned upstream of the dyeing vat and is used to wind the film to be dyed. The drying mechanism is positioned downstream of the dyeing vat and is used to dry the dyed film. The rewinding roller is positioned downstream of the drying mechanism and is used to wind and store the dyed and dried film. This structure facilitates continuous automated production.

[0013] Preferably, the guide roller further includes a first guide roller and a second guide roller. The first guide roller is arranged downstream of the unwinding roller to guide the film output from the unwinding roller, and the second guide roller is arranged upstream of the drying mechanism to guide the film about to enter the drying mechanism. This structure further improves the stability and reliability of film transport and avoids deviations in dyeing effect due to local misalignment of the film.

[0014] Preferably, the support has a horizontally arranged main body, and the guide roller, unwind roller, and take-up roller are all constrained under this main body by support arms. This structure facilitates control of the entire film height and tilt angle adjustment mechanism via the support, making the overall equipment structure more compact and easier to operate.

[0015] Compared with the prior art, the advantages of this invention are as follows: This invention supports the film by using guide rollers of different heights and arranging them corresponding to the dyeing vat. These guide rollers can be tilted axially, allowing the film to be dyed to enter the dyeing solution at an angle in the width direction. The film's depth in the dyeing solution varies at different points in the width direction, resulting in different residence times for the uniformly conveyed film in the dyeing solution, thus achieving a gradient effect from dark to light. The gradient film prepared by this invention achieves color gradient solely through dyeing, simplifying the film structure. This invention achieves continuous production through its simple structure, reducing production costs and improving the dyeing stability of the film. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present invention (before staining);

[0017] Figure 2 This is a schematic diagram of the structure of an embodiment of the present invention (during the dyeing process);

[0018] Figure 3 This describes the conveying trajectory of the thin film at various points along its width in this embodiment of the invention.

[0019] Figure 4 This is a structural diagram showing the connection between the guide roller and the support arm in an embodiment of this utility model. Detailed Implementation

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0021] like Figures 1-4 As shown, the production equipment for the gradient color window film substrate in this embodiment includes a dyeing vat 1 and a support 2. The dyeing vat 1 is used to hold the dyeing solution and has an open top. The support 2 is movably positioned above the dyeing vat 1 and has a downwardly extending support arm 21. The lower end of the support arm 21 is connected to a guide roller for supporting the film 100 and conveying it laterally. The guide roller is arranged laterally perpendicular to the conveying direction of the film 100 and includes at least a first guide roller 01 and a second guide roller 02 with different vertical heights. The first guide roller 01 and the second guide roller 02 are inclined vertically and constrained on the support arm 21 along their axial direction.

[0022] The first guide roller 01 and the second guide roller 02, as the support 2 descends, constrain the dyeing support area, and the film 100, when conveyed to this dyeing support area, is located in the dyeing vat 1. This structure facilitates control of the film's dyeing position and size. For example, by controlling the height of the support's descent, the size of the film immersed in the dyeing solution in the direction perpendicular to the film's conveying length, i.e., the width direction of the film, can be controlled to obtain a film with a set dyeing size.

[0023] The tilt angle α of the first guide roller 01 and the second guide roller 02 is 30° to 60°. By setting this angle, the conveying speed at different points along the width of the film can be controlled, thereby controlling the dyeing time at different points along the width of the film to obtain a better gradient dyeing effect.

[0024] The first guide roller 01 and the second guide roller 02 are equipped with adjusting components at their connection points with the corresponding support arms 21, allowing for adjustment of their tilt angle. This adjusting component can be a connecting block 211 that can swing up and down relative to the support arm 21. A rotating shaft cooperating with the guide roller is constrained on the side of this connecting block 211. After the swing position relative to the support arm 21 is adjusted, the connecting block 211 can be locked in place by bolts 212. This structure facilitates adjustment of the tilt angles of the first guide roller 01 and the second guide roller 02 to match the corresponding dyeing time and temperature, achieving the best gradient dyeing effect.

[0025] From a side view, the dyeing support area is constrained into a V-shaped, U-shaped, or S-shaped structure; this embodiment shows a V-shaped structure. This structure facilitates the immersion of specific portions of the film in the dyeing solution, allowing for easier control of the dyeing dimensions.

[0026] This embodiment also includes a third guide roller 03. The lower end of the first guide roller 01 is located at the lowest point. The second guide roller 02 and the third guide roller 03 are respectively arranged on both sides of the first guide roller 01, and the lower ends of the second guide roller 02 and the third guide roller 03 are both higher than the lower end of the first guide roller 01. In this embodiment, the second guide roller 02 and the third guide roller 03 are at the same height. With the above structure, it is convenient to guide and transport the film at different heights in a symmetrical manner with respect to the first guide roller 01 as the center, thereby improving the stability and reliability of film transport.

[0027] This embodiment also includes an unwinding roller 3, a drying mechanism 4, and a take-up roller 5. The unwinding roller 3 is located upstream of the dyeing vat 1 and is used to wind the film to be dyed. The drying mechanism 4 is located downstream of the dyeing vat 1 and is used to dry the dyed film. The take-up roller 5 is located downstream of the drying mechanism 4 and is used to wind and store the dyed and dried film. This structure facilitates continuous automated production.

[0028] The guide rollers in this embodiment also include a first guide roller 001 and a second guide roller 002. The first guide roller 001 is arranged downstream of the unwinding roller 3 to guide the film output from the unwinding roller 3, and the second guide roller 002 is arranged upstream of the drying mechanism 4 to guide the film about to enter the drying mechanism 4. This structure further improves the stability and reliability of film transport and avoids deviations in dyeing effect due to local misalignment of the film.

[0029] In this embodiment, the support 2 has a horizontally arranged main body, under which the guide roller, unwind roller 2, and take-up roller 5 are constrained by the support arm 21. This structure facilitates control of the entire film height and tilt angle adjustment mechanism via the support 2, making the overall equipment structure more compact and easier to operate.

[0030] The method for preparing a gradient color window film substrate using the equipment of this embodiment is as follows:

[0031] (1) Prepare the staining solution;

[0032] (2) The film to be dyed is placed on a support 2 that can be transversely transported and is partially arched downward (in a V shape), and the support 2 is located above the dyeing solution.

[0033] Before dyeing, adjust the orientation of the film so that it is tilted in the direction perpendicular to the conveying direction, that is, the first width edge of the film is on top and the second width edge is on the bottom, so that the width direction of the film is arranged at 45° with the surface of the dyeing solution; lower the support 2 until half of the width of the arched part of the film is submerged in the dyeing solution, and start dyeing by slowly and uniformly moving the film at a speed of 1 m / min;

[0034] During the dyeing process, the depth of the film penetrating the dyeing solution gradually increases from the edge of the first width to the edge of the second width. When the film is conveyed at a constant speed, its residence time in the dyeing solution gradually increases from top to bottom. Figure 3 As shown, the residence time of AA', BB', and CC' on the film in the dye solution is extended sequentially. Depending on the length of time the film stays in the dye solution, it exhibits different shades of color. The lowest part of the film stays in the dye solution the longest and is dyed the darkest. The closer the part is to the liquid surface, the shorter the residence time and the lighter the color, thus producing a gradient color.

[0035] (3) After the dyed film is washed with water, fixed with colorant, dried and then stored, a gradient color window film substrate is obtained.

[0036] In this embodiment, the film is supported by guide rollers of different heights and arranged to correspond with the dyeing vat. These guide rollers can be tilted axially, so that the film to be dyed can enter the dyeing solution at an angle in the width direction. The film is at different depths in the dyeing solution in different parts of the width direction. This difference in depth results in different residence times of the film in the dyeing solution in the width direction when it is conveyed at a uniform speed. This can achieve a gradient effect of a single color from dark to light. Of course, it is not limited to obtaining a gradient effect of a single color from dark to light. It can also obtain a colored gradient film. This can be achieved by controlling the immersion depth in the width of the film, the conveying speed, the vertical movement and tilting of the support, and the direction of the tilting surface, and sequentially passing through dyeing vats of more than one color.

[0037] In the specification and claims of this utility model, terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," are used to describe various exemplary structural parts and elements of this utility model. However, the use of these terms is merely for the purpose of explanation and is based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this utility model can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

Claims

1. A production equipment for a gradient color window film substrate, characterized in that: The device includes a dyeing vat and a support. The dyeing vat is used to hold the dyeing solution. The support is movable up and down above the dyeing vat. The support has a downwardly extending support arm. The lower end of the support arm is connected to a guide roller for supporting and laterally conveying the film. The guide roller is arranged laterally perpendicular to the conveying direction of the film and includes at least a first guide roller and a second guide roller with different vertical heights. The first guide roller and the second guide roller can be inclined up and down along their axial direction and constrained on the support arm.

2. The production equipment for the gradient color window film substrate according to claim 1, characterized in that: The first guide roller and the second guide roller constrain the dyeing support area as the support descends, and the film is located in the dyeing vat when it is conveyed to the dyeing support area.

3. The production equipment for the gradient color window film substrate according to claim 2, characterized in that: The inclination angle of the first guide roller and the second guide roller is 30° to 60°.

4. The production equipment for the gradient color window film substrate according to claim 3, characterized in that: The first guide roller, the second guide roller and the corresponding support arm are provided with adjustment components that can adjust their tilt angle.

5. The production equipment for the gradient color window film substrate according to claim 2, characterized in that: From a side view, the dyed support area is constrained into a V-shaped, U-shaped, or S-shaped structure.

6. The production equipment for the gradient color window film substrate according to any one of claims 1 to 5, characterized in that: It also includes a third guide roller, with the lower end of the first guide roller located at the lowest point. The second and third guide rollers are respectively arranged on both sides of the first guide roller, and the lower ends of the second and third guide rollers are both higher than the lower end of the first guide roller.

7. The production equipment for gradient color window film substrate according to any one of claims 1 to 5, characterized in that: It also includes an unwinding roller, a drying mechanism, and a take-up roller. The unwinding roller is located upstream of the dyeing vat and is used to wind the film to be dyed. The drying mechanism is located downstream of the dyeing vat and is used to dry the dyed film. The take-up roller is located downstream of the drying mechanism and is used to wind and store the dyed and dried film.

8. The production equipment for the gradient color window film substrate according to claim 7, characterized in that: The guide roller also includes a first guide roller and a second guide roller. The first guide roller is arranged downstream of the unwinding roller to guide the film output from the unwinding roller, and the second guide roller is arranged upstream of the drying mechanism to guide the film about to enter the drying mechanism.

9. The production equipment for the gradient color window film substrate according to claim 8, characterized in that: The support has a horizontally arranged main body, and the guide roller, unwinding roller, and winding roller are all constrained under this main body by support arms.

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