Method for preparing shading glue

Abstract

The invention discloses a method for preparing shading glue, which comprises the following steps: preparing materials: providing a bottom film, heightening glue, a diaphragm and a pressing jig which is provided with a first conveying cavity and a second conveying cavity which are communicated with each other along a first direction, the first conveying cavity and the second conveying cavity are communicated with the two ends of the pressing jig in the second direction to form a feeding port and a discharging port, and the height of the discharging port in the first direction is smaller than the sum of the thickness of the bottom film and the thickness of the heightening glue; slitting: cutting the bottom film and the heightening glue so as to perform slitting treatment; pressing is conducted, specifically, the bottom film and the block-up glue are input into a first conveying cavity and a second conveying cavity through a feeding port and output through a discharging port, so that the block-up glue is connected to the bottom film; attaching: attaching the membrane to the bottom membrane and the heightening glue; and rolling is conducted, specifically, the base film, the heightening glue and the diaphragm which are attached are rolled. According to the method for preparing the shading glue, marks can be prevented from being generated on the surface of the heightening glue, the stripping efficiency of the protective film is improved, and the preparation efficiency of the shading glue is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of light-shielding adhesives, and particularly to a method for preparing a light-shielding adhesive. Background Art

[0002] When preparing a screen, a light-shielding adhesive needs to be used and pasted on the upper side or the side of the product light source to prevent light leakage of the product and affect the display effect of the screen. The light-shielding adhesive is formed by laminating a bottom film, a spacer adhesive, and a black adhesive.

[0003] In the related art, when laminating the bottom film and the spacer adhesive, since the spacer adhesive needs to be laminated to a specified position of the bottom film, in order to improve the lamination accuracy, the size of the spacer adhesive is often made larger than the required size, so that the spacer adhesive covers the lamination position, and then the spacer adhesive is punched and cut to the specified size. However, after punching and cutting, there will be imprints on the outer surface of the spacer adhesive, resulting in the machine being prone to jamming, thereby affecting the preparation efficiency. Summary of the Invention

[0004] The present invention aims to at least solve one of the technical problems existing in the prior art. For this purpose, the present invention provides a method for preparing a light-shielding adhesive, which can avoid the generation of imprints on the surface of the spacer adhesive, improve the peeling efficiency of the protective film, and promote the preparation efficiency of the light-shielding adhesive.

[0005] A method for preparing a light-shielding adhesive according to an embodiment of the first aspect of the present invention includes the following steps: Material preparation: providing a bottom film, a spacer adhesive, a film sheet, and a lamination jig, the lamination jig having a first conveying cavity and a second conveying cavity communicating with each other along a first direction, the first conveying cavity and the second conveying cavity conducting both ends of the lamination jig along a second direction to form a feed port and a discharge port, the height of the discharge port along the first direction being less than the sum of the thicknesses of the bottom film and the spacer adhesive; Slitting: cutting the bottom film and the spacer adhesive to perform slitting treatment; Lamination: inputting the bottom film and the spacer adhesive into the first conveying cavity and the second conveying cavity from the feed port, and outputting them through the discharge port, so that the spacer adhesive is connected to the bottom film; Attachment: attaching the film sheet to the bottom film and the spacer adhesive; Rewinding: rewinding the laminated bottom film, spacer adhesive, and film sheet.

[0006] The method for preparing a light-shielding adhesive according to an embodiment of the present invention has at least the following beneficial effects: The base film and the heightening adhesive are cut into strips and jointly conveyed to a lamination fixture. The positions of the base film and the heightening adhesive can be defined through the first conveying cavity and the second conveying cavity of the lamination fixture, so as to achieve precise lamination of the heightening adhesive and the base film in the lamination fixture, without reserving an extra cutting size for the heightening adhesive, reducing the stamping and cutting steps of the heightening adhesive, and thus avoiding the generation of imprints on the surface of the heightening adhesive and affecting the preparation efficiency of the light-shielding adhesive.

[0007] According to some embodiments of the present invention, in the step of preparing materials, a slitting tool is further provided. The slitting tool is used to cut the heightening adhesive in the step of slitting. The slitting tool is provided with a plurality of slitting grooves at intervals in a third direction, the distance between adjacent two slitting grooves is the same, and blades are provided on both sides of the slitting groove in the third direction.

[0008] According to some embodiments of the present invention, a lamination part is formed by extending the side of the second conveying cavity facing the first conveying cavity in a first direction. The lamination part extends to the discharge port in a second direction. There is a spacing distance between the lamination part and the first conveying cavity in the first direction, and the spacing distance gradually becomes smaller in the second direction.

[0009] According to some embodiments of the present invention, the lamination part extends to the feed port in the second direction, and the end of the lamination part at the feed port and the inner wall of the second conveying cavity adopt an arc transition.

[0010] According to some embodiments of the present invention, the feed port and the bottom of the lamination fixture have a first spacing distance in the first direction, the discharge port and the bottom of the lamination fixture have a second spacing distance in the first direction, the second spacing distance is greater than the first spacing distance, and the first conveying cavity and the second conveying cavity are inclined.

[0011] According to some embodiments of the present invention, the lamination fixture includes a first clamp and a second clamp. The second clamp is covered on the first clamp in the first direction. The first conveying cavity is formed by recessing the side of the first clamp facing the second clamp in the first direction, and the second conveying cavity is formed by recessing the side of the second clamp facing the first clamp in the first direction.

[0012] According to some embodiments of the present invention, an installation hole is formed in the side of the first clamp facing the second clamp in the first direction. The lamination fixture further includes a fixing part. The fixing part is connected to the side of the second clamp facing the first clamp, and the fixing part is arranged in the installation hole.

[0013] According to some embodiments of the present invention, in the step of preparing materials, a pressing wheel is further provided. The pressing wheel is arranged downstream of the pressing fixture. The pressing step includes a first pressing and a second pressing. The pressing fixture is used for performing the first pressing on the bottom film and the heightening glue. The pressing wheel corresponds to the discharge port along the second direction to perform the second pressing on the bottom film and the heightening glue.

[0014] According to some embodiments of the present invention, the method for preparing the light-shielding glue further includes a stamping step. The stamping step is arranged between the laminating step and the winding step. The stamping step includes a first stamping. The film has an inner frame area, a target area, and an outer frame area. The target area is arranged between the inner frame area and the outer frame area and has an inner border line and an outer border line. The first stamping cuts the inner frame area along the inner border line.

[0015] According to some embodiments of the present invention, the stamping step further includes a second stamping. The second stamping cuts the outer frame area along the outer border line.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be understood through the practice of the present invention. Description of the Drawings

[0017] The following further describes the present invention in conjunction with the drawings and embodiments, where: Figure 1 is a schematic flow chart of the method for preparing the light-shielding glue in the embodiment of the present invention; Figure 2 is a schematic diagram of the pressing fixture in the embodiment of the present invention; Figure 3 is the front view of the pressing fixture in the embodiment of the present invention; Figure 4 In the embodiment of the present invention Figure 3 is the cross-sectional view at A-A in; Figure 5 is a schematic diagram of the slitting cutter in the embodiment of the present invention; Figure 6 is a schematic diagram of the film in the embodiment of the present invention; Figure 7 is a schematic flow chart of the method for preparing the light-shielding glue in the embodiment of the present invention.

[0018] Reference Signs: Laminating Fixture 100; First Fixture 110; First Conveyor Chamber 111; Mounting Hole 112; Second Fixture 120; Second Conveyor Chamber 121; Laminating Portion 122; Spacing Distance H1; Feed Inlet 130; First Spacing L1; Discharge Outlet 140; Second Spacing L2; Arc Structure 150; Fastening Member 160; Slitting Tool 200; Slitting Groove 210; Blade 220; Diaphragm 300; Inner Frame Region 310; Target Region 320; Inner Border 321; Outer Border 322; Outer Frame Region 330. Detailed Embodiment

[0019] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only for explaining the present invention and should not be construed as a limitation of the present invention.

[0020] In the description of the present invention, it should be understood that with regard to the orientation description, such as the orientation or positional relationship indicated by up, down, front, back, left, right, etc., is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0021] In the description of the present invention, the meaning of several is more than one, the meaning of multiple is more than two, greater than, less than, exceeding, etc. are understood as not including the number itself, and above, below, within, etc. are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features and should not be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features or implicitly indicating the sequence relationship of the indicated technical features.

[0022] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0023] In the description of the present invention, the description with reference to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0024] The following describes a method for preparing a light-shielding adhesive according to an embodiment of the first aspect of the present invention with reference to the accompanying drawings of the specification. It should be noted that the first direction is a vertical direction, and the second direction is a conveying direction of the base film, the padding adhesive, and the diaphragm. For ease of understanding and description, in the embodiment of the present invention, the first direction is indicated in an up-and-down manner, the second direction is indicated in a forward-and-backward direction, and the third direction is indicated in a left-and-right direction. The first direction, the second direction, and the third direction intersect with each other.

[0025] The embodiment of the present invention provides a method for preparing a light shielding adhesive. Figures 1 to 3 As shown, the method for preparing the light-shielding glue comprises the following steps: S100, material preparation: providing a base film, a heightening glue, a diaphragm 300 and a pressing jig 100.

[0026] Specifically, the interior of the laminating jig 100 is provided with a first conveying cavity 111 and a second conveying cavity 121 which are interconnected along the vertical direction. The first conveying cavity 111 is used to convey the base film, and the second conveying cavity 121 is used to convey the padding glue. In this embodiment, the second conveying cavity 121 is arranged above the first conveying cavity 111 along the vertical direction. Since the area of the base film will be larger than the area of the padding glue during the laminating operation, the second conveying cavity 121 is arranged above the first conveying cavity 111, so that the part of the base film that is not combined with the padding glue can be attached to the inner wall of the first conveying cavity 111 by the action of gravity, thereby being supported, and avoiding the formation of creases in the part of the base film that is not combined with the padding glue under the action of the laminating force during the bonding process.

[0027] Furthermore, the first conveying cavity 111 and the second conveying cavity 121 are connected along the front-to-back direction to form a feed port 130 and a discharge port 140 at both ends of the pressing jig 100. Since the first conveying cavity 111 is connected to the second conveying cavity 121, the feed port 130 and the discharge port 140 of the first conveying cavity 111 are also connected to the feed port 130 and the discharge port 140 of the second conveying cavity 121, so that the base film and the padding glue can be input and output together in the interior of the pressing jig 100 for pressing. The height of the discharge port 140 in the up-down direction, that is, the distance between the upper wall surface and the lower wall surface of the discharge port 140, is less than the sum of the thickness of the base film and the padding glue in the up-down direction. Since the padding glue is an elastic material, when the base film and the padding glue are discharged through the discharge port 140, the discharge port 140 will squeeze the base film and the padding glue to deform the padding glue, thereby achieving the pressing of the base film and the padding glue.

[0028] S200, Striping: Cut the base film and the padding glue to carry out striping.

[0029] Specifically, in the striping step S200, a cutting tool (such as a cutter or a laser cutting machine) is used to precisely cut the bottom film and the spacer adhesive, so that their sizes meet the requirements of subsequent processes, avoiding the problem of inconsistent sizes found after the light-shielding adhesive is prepared, thereby reducing material waste caused by inappropriate sizes. Moreover, the width of the material after striping is smaller, and during the lamination step S300, it is better to ensure that the pressure received by each strip of material is uniform, thereby improving the quality stability of the light-shielding adhesive.

[0030] S300. Lamination: The bottom film and the spacer adhesive are input into the first conveying cavity 111 and the second conveying cavity 121 through the feed port 130, and are output through the discharge port 140, so that the spacer adhesive is connected to the bottom film.

[0031] Specifically, the bottom film and the spacer adhesive after striping treatment will correspond one by one and are jointly conveyed into the lamination fixture 100. The first conveying cavity 111 and the second conveying cavity 121 inside the lamination fixture 100 are used to limit the positions of the bottom film and the spacer adhesive respectively, so that the relative positions of the bottom film and the spacer adhesive will not change, so that the spacer adhesive is precisely laminated on the designated position of the bottom film. At the same time, through the pressure setting of the discharge port 140, the bottom film and the spacer adhesive are subjected to uniform pressure during the process of passing through the discharge port 140, promoting the effective lamination of the two.

[0032] S400. Laying: The film sheet 300 is attached to the bottom film and the spacer adhesive.

[0033] Specifically, in one embodiment, the film sheet 300 is black glue. In other embodiments, the film sheet 300 can also be black-silver glue, or black-and-white glue and other film sheets 300, as long as the film sheet 300 can achieve a light-shielding effect. After completing the lamination step S300, the film sheet 300 is attached to the bottom film and the spacer adhesive, so that the bottom film, the spacer adhesive and the film sheet 300 jointly form a multi-layer composite structure, thereby enhancing the strength and stability of the light-shielding adhesive and improving the light-shielding performance.

[0034] S600. Rewinding: The bottom film, the spacer adhesive and the film sheet 300 after lamination are rewound.

[0035] Specifically, after the bottom film, the spacer adhesive and the film sheet 300 are mutually laminated, a rewinding device is used to neatly wind the laminated multi-layer composite material into a roll for storage and transportation. Through the rewinding step S600, it is not only convenient for subsequent processing (such as inspection and warehousing) and use, but also can effectively protect the light-shielding adhesive from damage and extend the service life of the light-shielding adhesive.

[0036] In the related art, since the spacer gum cannot be precisely attached to the designated position on the bottom film, during the lamination step S300, the strip size of the spacer gum will be larger than the designated size, so that the spacer gum can completely cover the designated position on the bottom film. Then, the spacer gum is cut by stamping and cutting, so that the spacer gum is both attached to the designated position on the bottom film and meets the required size. However, after the spacer gum undergoes stamping and cutting, knife marks will appear on the surface of the spacer gum, resulting in a jamming phenomenon of the machine when the spacer gum and the bottom film are subjected to the next operation. For example, a protective film is provided on the surface of the spacer gum. After the spacer gum and the bottom film are laminated, the protective film needs to be peeled off by a film peeling machine. However, due to the existence of the knife marks, the film peeling machine is prone to jamming when peeling the protective film and cannot peel the protective film, thus affecting the continuity of the overall process of the light-shielding gum and reducing the preparation efficiency.

[0037] The method for preparing the light-shielding gum according to the embodiment of the present invention cuts the bottom film and the spacer gum into strips and jointly conveys them to the lamination fixture 100. The positions of the bottom film and the spacer gum can be limited through the first conveying cavity 111 and the second conveying cavity 121 of the lamination fixture 100, so as to realize the precise lamination of the spacer gum and the bottom film in the lamination fixture 100, without the need to reserve an extra cutting size for the spacer gum, reducing the stamping and cutting steps of the spacer gum, thereby avoiding the generation of imprints on the surface of the spacer gum and affecting the preparation efficiency of the light-shielding gum.

[0038] Further, in some embodiments, referring to Figure 1 and 5 As shown, in the stock preparation step S100, a slitting cutter 200 also needs to be provided. The slitting cutter 200 is used to cut and strip the spacer gum in the strip cutting step S200. Specifically, the slitting cutter 200 is provided with a plurality of slitting grooves 210 in the left-right direction. The plurality of slitting grooves 210 are spaced apart, and the spacing between adjacent two slitting grooves 210 is the same, thereby ensuring that the width of each strip of spacer gum is consistent. Blades 220 are provided on both sides of the slitting grooves 210 in the left-right direction. The blades 220 are used to cut the spacer gum. By providing a plurality of slitting grooves 210 and blades 220 on the slitting cutter 200, the spacer gum can be divided into multiple strip-shaped structures in one cut, thus promoting the slitting efficiency of the spacer gum and improving the preparation speed of the light-shielding gum. In this embodiment, the same blade 220 is shared between adjacent two slitting grooves 210, so that the slitting cutter 200 has a smaller volume with the same number of slitting grooves 210, or more slitting grooves 210 and blades 220 can be provided with the same volume, thereby improving the strip cutting efficiency of the spacer gum. Moreover, sharing the same blade 220 between adjacent two slitting grooves 210 can also reduce the loss of the spacer gum and avoid the existence of remaining materials between adjacent two spacer gums after the strip cutting step S200.

[0039] In some embodiments, referring to Figures 2 to 4 As shown, on the side of the second conveying cavity 121 facing the first conveying cavity 111, a pressing portion 122 is formed and extends in a downward direction. One end of the pressing portion 122 extends in the front-rear direction to the discharge port 140. The pressing portion 122 is used to abut against the raised glue to press the bottom film and the raised glue together. Specifically, one end of the pressing portion 122 extends to the discharge port 140, making the height of the discharge port 140 in the up-down direction different from that of the feed port 130 and less than the sum of the thicknesses of the bottom film and the raised glue. Thus, when the bottom film and the raised glue are output from the discharge port 140, they will be pressed against the wall surface of the discharge port 140 to achieve pressing. In this embodiment, after the raised glue enters the second conveying cavity 121 and is conveyed for a certain distance, the raised glue will contact the pressing portion 122, and the pressing portion 122 will apply a squeezing force in the downward direction to the raised glue, thereby promoting the bonding degree between the raised glue and the bottom film. Moreover, the pressing portion 122 is arranged in the front-rear direction, so that when the raised glue passes through the pressing portion 122, each part of the pressing portion 122 will provide a uniform downward pressure to the raised glue, enabling the raised glue and the bottom film to fully contact, improving the bonding degree between the two, and thus avoiding insufficient contact pressure provided by the inner wall of the second conveying cavity 121 to the raised glue and the bottom film, resulting in insufficient pressing of the raised glue and the bottom film.

[0040] Furthermore, in some embodiments, referring to Figure 4 As shown, there is a spacing distance H1 between the pressing portion 122 and the first conveying cavity 111 in the up-down direction, and the spacing distance H1 gradually decreases in the front-rear direction. Specifically, the wall surface of the pressing portion 122 facing the first conveying cavity 111 is spaced from the bottom wall of the second conveying cavity 121 (the wall surface of the second conveying cavity 121 facing one side of the second conveying cavity 121 in the up-down direction), and there is a spacing distance H1 between them. The spacing distance H1 gradually decreases in the front-rear direction, so that the squeezing force applied by the pressing portion 122 to the raised glue and the bottom film will gradually increase. By the gradual change of the spacing distance H1, the gradual increase of the squeezing force is realized, enabling the raised glue to gradually undergo compressive deformation during the conveying process, thereby preventing the raised glue from being subjected to a large sudden pressure when contacting the pressing portion 122, avoiding stress concentration and stress mutation of the raised glue, and reducing the breakage rate of the raised glue.

[0041] In some embodiments, referring to Figures 2 to 4As shown in the figure, both ends of the pressing part 122 extend to the feeding port 130 and the discharging port 140 respectively along the front-rear direction. The end of the pressing part 122 at the feeding port 130 and the inner wall of the end of the second conveying cavity 121 adopt arc transition. Specifically, an arc structure 150 is provided at the end of the pressing part 122. The arc structure 150 is arranged at the discharging port 140 and is connected to the inner wall of the second conveying cavity 121 on the side facing the first conveying cavity 111. During the conveying process, the pressing part 122 will extrude the padding glue so that the padding glue and the bottom film are gradually attached. Extending one end of the pressing part 122 to the discharging port 140 can extend the extrusion time of the pressing part 122 on the padding glue, thereby improving the attachment efficiency of the bottom film and the padding glue. And, since the pressing part 122 is used to abut against the padding glue, the distance H1 between the pressing part 122 and the first conveying cavity 111 will be smaller than the thickness of the bottom film and the padding glue in the up-down direction. When the padding glue just comes into contact with the pressing part 122, the padding glue needs to be deformed before it can enter the second conveying cavity 121. The end of the pressing part 122 arranged at the discharging port 140 is an arc structure 150, which can improve the cooperation degree between the padding glue and the pressing part 122, thereby improving the smoothness of the padding glue entering the second conveying cavity 121. At the same time, adopting the arc structure 150 can prevent the surface of the padding glue from being scratched by the edge of the pressing part 122 when the padding glue enters the second conveying cavity 121, resulting in the surface of the padding glue being scratched or torn by the pressing part 122.

[0042] In some embodiments, referring to Figure 4 As shown in the figure, the feeding port 130 and the bottom of the pressing jig 100 have a first distance L1 in the up-down direction, and the discharging port 140 and the bottom of the pressing jig 100 have a second distance L2 in the up-down direction. The first distance L1 is greater than the second distance L2, so that the first conveying cavity 111 and the second conveying cavity 121 are inclined. Specifically, since the bottom film will contact the bottom wall surface of the first conveying cavity 111 when the bottom film and the padding glue are combined, that is: the wall surface of the first conveying cavity 111 on the side facing the second conveying cavity 121 in the up-down direction. Therefore, in this embodiment, the first distance L1 and the second distance L2 are measured based on the bottom wall of the first conveying cavity 111. Making the first conveying cavity 111 and the second conveying cavity 121 inclined, so that after the bottom film and the padding glue enter the first conveying cavity 111 and the second conveying cavity 121 respectively, the two can slide along the inner walls of the first conveying cavity 111 and the second conveying cavity 121 under the action of gravity, thereby improving the conveying efficiency of the bottom film and the padding glue and promoting the preparation efficiency of the screen.

[0043] It should be noted that if, on the basis that the first conveying cavity 111 and the second conveying cavity 121 are inclined, a pressing part 122 is further provided on the second conveying cavity 121, the slope of the pressing part 122 needs to be greater than the slope of the bottom wall of the first conveying cavity 111, that is: the inclination angle of the pressing part 122 is greater than the inclination angle of the first conveying cavity 111, so as to ensure that during the conveying process of the bottom film and the padding adhesive, the gradually increasing extrusion force of the pressing part 122 can be received, thereby improving the pressing efficiency of the bottom film and the padding adhesive.

[0044] In some embodiments, referring to Figure 2 and Figure 3 As shown, the pressing fixture 100 includes a first fixture 110 and a second fixture 120. The second fixture 120 is disposed above the first fixture 110 in the up-down direction, and the first fixture 110 and the second fixture 120 are detachably connected. Specifically, since the padding adhesive is a gelatinous object and has viscosity, when the padding adhesive is conveyed between the first fixture 110 and the second fixture 120, part of the colloid will adhere to the inner wall of the second fixture 120. Making the first fixture 110 and the second fixture 120 detachably connected can improve the assembly speed of the pressing fixture 100, so as to quickly disassemble and assemble the first fixture 110 and the second fixture 120 to clean the residual glue in the second fixture 120, and avoid the colloid from clogging in the second conveying cavity 121 and affecting the use of the pressing fixture 100.

[0045] Furthermore, in some embodiments, referring to Figure 2 and Figure 3 As shown, a first conveying cavity 111 is recessed in the side of the first fixture 110 facing the second fixture 120 in the up-down direction, and a second conveying cavity 121 is recessed in the side of the second fixture 120 facing the first fixture 110 in the up-down direction. Specifically, the first conveying cavity 111 and the second conveying cavity 121 are separately formed on the first fixture 110 and the second fixture 120, respectively. Thereby, the shape structures of the first fixture 110 and the second fixture 120 are relatively regular, thus reducing the stress concentration of the first fixture 110 and the second fixture 120 and improving the use strength of the pressing fixture 100. At the same time, making the first conveying cavity 111 be separately disposed on the first fixture 110 and the second conveying cavity 121 be separately disposed on the second fixture 120 can also simplify the processing and manufacturing of the pressing fixture 100, thereby improving the manufacturing convenience of the pressing fixture 100.

[0046] Furthermore, in some embodiments, referring to Figure 2 and Figure 3As shown, on one side of the first fixture 110 facing the second fixture 120, a mounting hole 112 is formed in the downward direction. The pressing jig 100 further includes a fixing member 160 for connecting to the mounting hole 112. The fixing member 160 is connected to one side of the second fixture 120 facing the first fixture 110 in the downward direction. When the first fixture 110 and the second fixture 120 are connected to each other, the fixing member 160 is fixedly connected in the mounting hole 112. Specifically, the mounting hole 112 and the fixing member 160 are respectively arranged on both sides of the first conveying cavity 111 and the second conveying cavity 121, thereby preventing the bottom film and the spacer adhesive from interfering with the fixing member 160 when being conveyed into the interior of the pressing jig 100, which may affect the conveyance of the bottom film and the spacer adhesive. Moreover, by providing the fixing member 160 and the mounting hole 112, the assembly accuracy of the first fixture 110 and the second fixture 120 can be improved, avoiding deviation in the corresponding positions of the first conveying cavity 111 and the second conveying cavity 121 after the connection and assembly of the first fixture 110 and the second fixture 120, so that the spacer adhesive cannot be precisely attached to the bottom film.

[0047] In some embodiments, in the material preparation step S100, a pressing wheel is further provided, and the pressing step S300 includes a first pressing and a second pressing. Specifically, along the conveying direction (front - rear direction) of the bottom film and the spacer adhesive, the pressing wheel is arranged downstream of the discharge port 140. The pressing jig 100 is used for the first pressing of the bottom film and the spacer adhesive so that the spacer adhesive can be combined at the designated position on the bottom film, preventing the positions of the spacer adhesive and the bottom film from changing. The pressing wheel corresponds to the discharge port 140 of the pressing jig 100 in the front - rear direction. When the bottom film and the spacer adhesive are combined with each other and output from the discharge port 140, the bottom film and the spacer adhesive will pass through the pressing wheel, and the pressing wheel performs a second pressing on the pressed bottom film and spacer adhesive to improve the bonding strength between the bottom film and the spacer adhesive, thereby completing the pressing operation.

[0048] In some embodiments, referring to Figure 1 、 Figure 6 and Figure 7 As shown, the method for preparing the light - shielding adhesive further includes a stamping step S500, and the stamping step S500 is arranged between the laminating step S400 and the winding step S600. Since the film 300 is attached to the edge of the screen, the shape of the film 300 needs to be adapted to the shape of the screen. When the film 300 is conventionally laminated, the film 300 is usually in a sheet structure, and the volume of the film 300 is larger than the shape of the screen, so that the film 300 can be stamped and cut to meet the required shape. In some embodiments, the film 300 can also be stamped into a specified shape and then laminated to the bottom film and the spacer adhesive through the laminating step S400.

[0049] Specifically, the diaphragm 300 has an inner frame region 310, a target region 320, and an outer frame region 330. The target region 320 is disposed between the inner frame region 310 and the outer frame region 330, and the target region 320 has an inner boundary line 321 and an outer boundary line 322. The inner boundary line 321 is the boundary line between the inner frame region 310 and the target region 320, and the outer boundary line 322 is the boundary line between the outer frame region 330 and the target region 320. The stamping step S500 includes a first stamping (step S510) and a second stamping (step S520). Among them, in the first stamping step S510, cutting is performed along the inner boundary line 321 through a stamping die, so that the target region 320 is separated from the inner frame region 310, and the integrity of the target region 320 and the outer frame region 330 is retained. Then, the waste removal treatment is performed on the cut inner frame region 310, that is: the inner frame region 310 of the diaphragm 300 is excluded, so that the target region 320 and the outer frame region 330 remain in the stamping die. The second stamping also uses the stamping die to cut the outer frame region 330 along the outer boundary line 322, separates the target region 320 from the outer frame region 330, and performs waste removal treatment on the outer frame region 330, finally forming an independent target region 320.

[0050] In this embodiment, by dividing the stamping step S500 into step S510 and step S520, the parameters (such as pressure, speed, etc.) in each stamping process can be independently adjusted to ensure that the cutting of each region reaches the best effect. It avoids the damage of the diaphragm 300 caused by the accumulation of errors when cutting is completed at one time. The step-by-step stamping can reduce the accumulation of errors and improve the dimensional accuracy of the diaphragm 300.

[0051] Moreover, making the first stamping be the cutting of the inner frame region 310 and the second stamping be the cutting of the outer frame region 330, that is, cutting the diaphragm 300 in the order of first inner and then outer, can keep the target region 320 and the outer frame region 330 integrally connected after the first stamping of the diaphragm 300. The integrity of the outer frame region 330 can be used as the supporting part of the target region 320, thereby avoiding that after the outer frame region 330 is cut, the target region 320 is only fixed through the inner frame region 310, resulting in the diaphragm 300 shaking or deforming due to the lack of external support when stamping and cutting along the inner boundary line 321. At the same time, when cutting along the inner boundary line 321, the diaphragm 300 will release part of the internal stress. By maintaining the integrity of the outer frame region 330, the deformation of the diaphragm 300 can be effectively restricted, and the stamping and cutting accuracy of the diaphragm 300 can be improved.

[0052] The embodiments of the present invention have been described in detail above with reference to the drawings, but the present invention is not limited to the above embodiments. Various changes can be made without departing from the gist of the present invention within the knowledge scope of those of ordinary skill in the art to which the present invention pertains. In addition, the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

Claims

1. A method for preparing a light-shielding adhesive, characterized in that, The following steps are involved: Material preparation: providing a base film, a padding glue, a diaphragm and a pressing jig, wherein the pressing jig has a first conveying cavity and a second conveying cavity connected along a first direction, the first conveying cavity and the second conveying cavity are connected along a second direction, and a feed port and a discharge port are formed at both ends of the pressing jig, and the height of the discharge port along the first direction is less than the sum of the thicknesses of the base film and the padding glue; Striping: cutting the base film and the padding glue to perform striping processing; Lamination: feeding the base film and the heightening adhesive into the first conveying cavity and the second conveying cavity from the feed port, and outputting through the discharge port, so that the heightening adhesive is connected to the base film; Laminating: attaching the film to the base film and the padding glue; Rolling up: rolling up the base film, the cushioning glue and the film sheet after lamination.

2. The method for preparing a light-shielding adhesive according to claim 1, wherein In the material preparation step, a slitting tool is also provided. The slitting tool is used to cut the padding glue in the stripping step. The slitting tool is provided with a plurality of slitting grooves spaced apart along a third direction, and the spacing between two adjacent slitting grooves is the same. Blades are provided on both sides of the slitting grooves along the third direction.

3. The method for preparing a light-shielding adhesive according to claim 1, characterized in that, A pressing portion is formed on one side of the second conveying cavity extending toward the first conveying cavity along the first direction, and the pressing portion extends to the discharge port along the second direction. There is a spacing distance between the pressing portion and the first conveying cavity along the first direction, and the spacing distance gradually decreases along the second direction.

4. The method for preparing a light-shielding adhesive according to claim 3, wherein The pressing part extends to the feed port along the second direction, and an end of the pressing part located at the feed port and an inner wall of the second conveying cavity are connected by an arc transition.

5. The method for preparing a light-shielding adhesive according to claim 1, characterized in that, The feed port and the bottom of the pressing jig have a first distance along the first direction, the discharge port and the bottom of the pressing jig have a second distance along the first direction, the second distance is greater than the first distance, and the first conveying cavity and the second conveying cavity are inclined.

6. The method for preparing a light-shielding adhesive according to claim 1, wherein, The pressing fixture includes a first clamp and a second clamp, the second clamp is covered on the first clamp along a first direction, the first clamp is recessed along the first direction toward one side of the second clamp to form the first conveying cavity, and the second clamp is recessed along the first direction toward one side of the first clamp to form the second conveying cavity.

7. The method for preparing a light-shielding adhesive according to claim 6, wherein, A mounting hole is formed along a first direction on a side of the first clamp facing the second clamp, and the pressing fixture further includes a fixing member connected to a side of the second clamp facing the first clamp, and the fixing member is arranged in the mounting hole.

8. The method for preparing a light-shielding adhesive according to claim 1, characterized in that, In the material preparation step, a pressing wheel is also provided, and the pressing wheel is arranged downstream of the pressing jig. The pressing step includes a first pressing and a second pressing. The pressing jig is used to press the base film and the padding glue for the first time, and the pressing wheel corresponds to the discharge port along the second direction to press the base film and the padding glue for the second time.

9. The method for preparing a light-shielding adhesive according to claim 1, wherein, The method for preparing the light-shielding adhesive further includes a stamping step, which is provided between the bonding step and the winding step. The stamping step includes a first stamping. The diaphragm has an inner frame area, a target area, and an outer frame area. The target area is located between the inner frame area and the outer frame area and has an inner border line and an outer border line. The first stamping cuts the inner frame area along the inner border line.

10. The method for preparing a light-shielding adhesive according to claim 9, wherein, The stamping step further includes a second stamping, which cuts the outer frame area along the outer border line.

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