Screen dispensing process

Abstract

The invention relates to the technical field of electronic product bonding modes, and provides a screen dispensing process which comprises the following steps: S1, equipment debugging; s2, the product is placed on an equipment platform, and the product is fixed; s3, scanning the outline of the product through 3D line scanning in the equipment to obtain the outline of the product and CG height position data; s4, the PC produces a dispensing path according to the data obtained in the step S3; s5, the glue valves carry out layer-by-layer stacking glue dispensing according to the glue dispensing path; and S6, the product is moved to a UV lamp to be cured and shaped. Therefore, the difficulty of the manufacturing process can be reduced, diversified products are compatible, and the production cost is reduced.

Description

Technical Field

[0001] The present application relates to the field of electronic product bonding methods, and in particular to a screen glue dispensing process. Background Art

[0002] In the assembly process of the screen assembly and the middle frame in the 3C industry, the traditional process is to apply glue on the middle frame, and then align and fit the screen assembly to the middle frame. The sealing rubber ring added between the screen and the middle frame not only increases the width of the frame and limits the improvement of the screen-to-body ratio, but may also affect the overall aesthetics and user experience. In addition, the installation process of the rubber ring also increases the production steps and costs.

[0003] In some existing technologies, a circle of colloid of a specific shape and size is directly applied to the screen assembly, and then assembled with the middle frame, etc. This process can achieve a narrower frame, a higher screen-to-body ratio, and better sealing and shockproof performance. In some applications, the glue is poured through mold injection, and the mold is cooled and solidified before being taken out. However, the special nature of the mold leads to high production line conversion costs, which makes it difficult to meet the market's demand for rapid response to diversified products.

[0004] Therefore, the present application studies a screen dispensing process to reduce the difficulty of the process, be compatible with diversified products, and reduce production costs. Summary of the invention

[0005] In order to reduce the difficulty of the manufacturing process, be compatible with diversified products, and reduce production costs, the present application provides a screen dispensing process.

[0006] The present application provides a screen dispensing process, which adopts the following technical solutions:

[0007] A screen dispensing process, comprising the following steps: S1: equipment debugging;

[0008] S2: Place the product on the equipment platform and fix the product;

[0009] S3: The 3D line scan in the equipment scans the product's outline to obtain the product outline and CG height position data;

[0010] S4: PC produces dispensing path according to the data obtained in step S3;

[0011] S5: The glue valve dispenses glue layer by layer according to the dispensing path;

[0012] S6: The product is moved under the UV lamp for curing.

[0013] By adopting the above technical solutions, accurate scanning of product contours, accurate calculation of dispensing paths and accurate execution of dispensing processes are achieved, which greatly improves production efficiency and product quality, reduces process difficulty, improves equipment flexibility, is compatible with diverse products, and reduces equipment and production costs.

[0014] Optionally, step S1 includes debugging the dispensing path, and the dispensing parameters are: the height of a single dispensing layer is 0.1±0.03mm, the width of the glue is 0.2±0.05mm, and the number of layers is 12.

[0015] Optionally, in step S2, the product is fixed by vacuum adsorption.

[0016] Optionally, step S3 also includes the following steps: grasping the CG contour position of the product to adjust the glue line position, and adjusting the position and speed of the S1 trajectory according to the grasped difference value.

[0017] By adopting the above technical solution, each product can be adapted, and the position accuracy of the colloid and the CG edge can be better controlled below 0.05mm, and the flatness of the glue surface can be controlled below 0.05mm.

[0018] Optionally, in step S5, the dispensing is performed layer by layer and then pre-cured.

[0019] By adopting the above technical solution, the glue type is predetermined to prevent the stacked glue from flowing and deforming.

[0020] Optionally, in step S5, the glue valve uses a Vermes 3200 spray valve with a TTF15 striker and a nozzle of 0.1 mm; the dispensing parameters are: RI (rise time): 0.5-1.0 ms; FA (fall time): 0.1-0.25 ms; OP (opening time): 0.5-1.0 ms; NL (opening stroke): 55-75%; DL (delay interval time): 0.5-3.0 ms; air pressure: 0.2-0.4 MPa.

[0021] Optionally, the glue used is Willbond UV3325T, and the glue viscosity is 10800mPa·s.

[0022] In summary, the present application includes at least one of the following beneficial technical effects:

[0023] 1. Only by scanning the product outline and calculating the dispensing path can the dispensing process be accurately executed, which greatly improves production efficiency and product quality;

[0024] 2. Reduce the difficulty of process technology, improve equipment flexibility, and be compatible with diverse products. There is no need to use molds. There is no need to replace equipment for different diverse products. Only relevant parameters need to be debugged, which reduces equipment and production costs;

[0025] 3. It can better control the glue shape, so that the colloid side is better flush with the CG side, improving the production quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a flowchart of the screen dispensing process of the embodiment of the present application;

[0027] Figure 2 It is a schematic diagram of a method of dispensing glue on a screen in the screen dispensing process of an embodiment of the present application. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-2 This application is described in further detail.

[0029] The present application embodiment discloses a screen dispensing process. Figure 1 and Figure 2 ,The screen dispensing process includes the following steps: S1: equipment debugging;

[0030] In this embodiment, equipment debugging includes debugging of product placement position, 3D line scan (line laser) scanning position debugging, 3D line scan data processing - dispensing trajectory generation, dispensing parameter setting debugging, dispensing needle and 3D line scan calibration XYZ position, etc., to debug the basic dispensing path.

[0031] Specifically, the glue used is Willbond UV3325T, and the viscosity of the glue is 10800mPa·s. The dispensing parameters are: the height of the dispensing layer is 0.1mm, the width of the glue is 0.2mm, the number of layers is 12; RI (rise time): 0.6; FA (fall time): 0.16; OP (opening time): 0.8; NL (opening stroke): 65%; DL (delay interval time): 2.0; air pressure: 0.3Mpa.

[0032] S2: placing the product on the equipment platform and fixing the product. Specifically, this embodiment uses vacuum adsorption to fix the product.

[0033] S3: The 3D line scan in the device scans the product's outer contour to obtain the product contour and CG height position data; this embodiment also includes the following steps in step S3: positioning the product through CCD, grabbing the product's CG contour position to adjust the glue line position, grabbing the position difference between the Panel and the CG overlap, and adjusting the position and speed of the S1 trajectory according to the grabbed difference value to adapt to each product.

[0034] S4: PC produces dispensing path according to the data obtained in step S3;

[0035] S5: The glue valve dispenses glue layer by layer according to the dispensing path. In this embodiment, the glue is dispensed layer by layer and pre-cured at the same time. In step S5 of this embodiment, the glue valve uses a Vermes 3200 spray valve, with a TTF15 striker, and a nozzle of 0.1mm. When the glue width can be controlled at about 0.2mm by stacking layer by layer, the glue height can be raised to 1.0mm or even higher.

[0036] S6: The product is moved under the UV lamp for curing and setting, and the curing time is 30 seconds.

[0037] The implementation principle of a screen dispensing process in an embodiment of the present application is as follows: accurate scanning of the product outline, accurate calculation of the dispensing path and accurate execution of the dispensing process are achieved, which greatly improves production efficiency and product quality, reduces process difficulty, improves equipment flexibility, is compatible with a variety of products, and reduces equipment and production costs.

[0038] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A screen dispensing process, characterized in that: The following steps are involved: S1: Equipment debugging; S2: Place the product on the equipment platform and fix the product; S3: The 3D line scan in the equipment scans the product's outline to obtain the product outline and CG height position data; S4: PC produces dispensing path according to the data obtained in step S3; S5: The glue valve dispenses glue layer by layer according to the dispensing path; S6: The product is moved under the UV lamp for curing.

2. A screen dispensing process according to claim 1, characterized in that: Including debugging the dispensing path, the dispensing parameters are: the single-layer height of the dispensing is 0.1±0.03mm, the glue width is 0.2±0.05mm, and the number of layers is 12.

3. A screen dispensing process according to claim 1, characterized in that: In step S2, the product is fixed by vacuum adsorption.

4. The screen dispensing process according to claim 1, characterized in that: The S3 step also includes the following steps: grasping the CG contour position of the product to adjust the glue line position, and adjusting the position and speed of the S1 trajectory according to the grasped difference value.

5. The screen dispensing process according to claim 1, characterized in that: In step S5, the dispensing is performed layer by layer and then pre-cured.

6. The screen dispensing process according to claim 1, characterized in that: In step S5, the glue valve uses a Vermes 3200 spray valve, with a TTF15 striker, and a nozzle of 0.1mm; the dispensing parameters are: RI (rise time): 0.5-1.0ms; FA (fall time): 0.1-0.25ms; OP (opening time): 0.5-1.0ms; NL (opening stroke): 55-75%; DL (delay interval time): 0.5-3.0ms; Air pressure: 0.2-0.4Mpa.

7. The screen dispensing process according to claim 1, characterized in that: The glue used is Willbond UV3325T, and the viscosity of the glue is 10800mPa·s.

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