A method and apparatus for printing dot adhesion testing

Abstract

The present application relates to the technical fields of printing dot test, especially relates to a printing dot adhesion test method and device, and a printing dot adhesion test device, which comprises a bottom plate, the upper end of the bottom plate is provided with two groups of corresponding X-axis sliding tables, Y-axis sliding tables are installed between the driving blocks of the X-axis sliding tables, Z-axis sliding tables are installed on the driving blocks of the Y-axis sliding tables, horizontal rods are fixedly installed on the driving blocks of the Z-axis sliding tables, the axis of the horizontal rods is parallel to the axis of the X-axis sliding tables, vertical rods are fixedly installed at the ends of the horizontal rods, test component mounting parts for connecting with test components are arranged at the lower ends of the vertical rods, the printing dot adhesion test method and device can realize semi-automatic grid division and adhesive tape pulling operation, can reduce the test error of printing dot adhesion caused by human factors such as force size, force angle, force speed, force uniformity and action time, and can improve test accuracy and uniformity.

Description

Technical Field

[0001] This invention relates to the field of printing dot testing technology, and more particularly to a method and apparatus for testing printing dot adhesion. Background Technology

[0002] Light guide plates are commonly used in liquid crystal displays (LCDs) as an important component of LED backlights. A light guide plate is a structural component that transforms linear light sources such as light-emitting diodes (LEDs), cold cathode fluorescent lamps (CCFLs), and fluorescent tubes into surface light sources.

[0003] A light guide plate is made of optical-grade acrylic / PC sheet material, with light guide dots (or "dots") printed onto its bottom surface using UV screen printing or laser printing techniques. The light guide plate works by absorbing light emitted from a line light source and causing it to linger on its surface. When the light hits each light guide dot, the reflected light diffuses in various angles, breaking the reflection condition and exiting from the front of the light guide plate. The use of light guide dots of varying density and size on the light-emitting surface ensures uniform light emission.

[0004] Adhesion testing typically employs methods such as the cross-cut adhesion test, pull-off test, scratch test, abrasion test, and corrosion test. The cross-cut adhesion test and pull-off test involve the application of adhesive tape. Due to numerous uncontrollable errors caused by human factors during manual grid division and tape removal, such as the magnitude, angle, speed, uniformity, and duration of the applied force, manual grid division and tape removal have a significant impact on the adhesion testing and quality assessment of samples such as printed dots. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a method and apparatus for testing the adhesion of printed dots.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A printing dot adhesion testing device includes a base plate. Two sets of corresponding X-axis slides are arranged on the upper end of the base plate. A Y-axis slide is installed between the drive blocks of the X-axis slides. A Z-axis slide is installed on the drive block of the Y-axis slide. A crossbar is fixedly installed on the drive block of the Z-axis slide. The axis of the crossbar is parallel to the axis of the X-axis slide. A vertical rod is fixedly installed at the end of the crossbar. A test component mounting part for connecting to a test component is provided at the lower end of the vertical rod. The test component includes a cutter and a tape clamp.

[0008] The upper surface of the base plate is also provided with a recess for placing the substrate.

[0009] Preferably, it also includes a controller, which is electrically connected to the X-axis slide, the Y-axis slide and the Z-axis slide.

[0010] Preferably, it also includes a magnetic fixing strip, and the base plate is made of iron. The substrate is fixed by the cooperation between the magnetic fixing strip and the base plate.

[0011] Preferably, the cutter includes a blade mounting base and blades. The lower end of the blade mounting base is fixedly provided with uniformly distributed blades. When the blade mounting base is parallel to the axis of the Y-axis slide, the blades are parallel to the crossbar.

[0012] Preferably, the tape clamp includes a clamp base plate and a clamping block connected to the test component mounting part. The clamp base plate has a vertically arranged groove, the clamping block is adapted to the groove, and the end face of the clamping block away from the clamp base plate is provided with a protrusion.

[0013] Preferably, the clamp base plate and the clamping block are connected by magnetic force or interference fit, and both the clamping surface of the clamp base plate and the clamping surface of the clamping block are provided with anti-slip structure.

[0014] Preferably, a method for testing the adhesion of printed dots, using the above-mentioned device for testing the adhesion of printed dots, includes the following steps:

[0015] Step 1: Fix the substrate to the base plate using magnetic fixing strips;

[0016] Step 2: Install the cutter at the lower end of the vertical rod, and draw multiple grids of a preset size through the dot surface of the cutter substrate. After completion, remove the cutter and install the tape clamp.

[0017] Step 3: Then, use tape with a preset adhesive strength to stick to the grid of the substrate being tested. Fix the other end of the tape to the tape clamp. Control the X-axis slide, Y-axis slide and Z-axis slide so that the tape is at 90° with the substrate and moves upward to tear off the tape. Tear off the tape within a preset time.

[0018] Step 4: Repeat the process of applying and removing the tape to the grid at the same location a predetermined number of times; finally, check whether the printed dots on the light guide plate are intact after the tape has been applied, and evaluate the adhesion of the printed dots according to the preset standards.

[0019] Preferably, in step 2, the blade mounting base of the cutter is first aligned with the axis of the Y-axis slide, and the X-axis slide and Z-axis slide are controlled to cut. After the cutter is aligned with the axis of the X-axis slide, the Y-axis slide and Z-axis slide are controlled to cut, and the grid is drawn on the substrate dot surface.

[0020] Preferably, in step 2, when the tape clamp fixes the tape, first align the edge of the tape with the groove of the clamp base plate, and then press the clamping block on.

[0021] Preferably, in step 3, when applying the tape, the tape must be parallel or perpendicular to the X-axis slide.

[0022] The beneficial effects of this invention are as follows: The printing dot adhesion testing method and device proposed in this invention utilizes a base, magnetic fixing strip, three-dimensional displacement stage, action rod, clamp, test components and transparent test tape to achieve semi-automatic grid division and tape pulling operation, reduce printing dot adhesion test errors caused by human factors such as the magnitude of the force, the angle of the force, the speed of the force, the uniformity of the force, and the time of action, and improve the accuracy and consistency of the test. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the main structure of a printing dot adhesion testing device proposed in this invention. Figure 1 ;

[0024] Figure 2 This invention provides a printing dot adhesion testing device. Figure 1 A top-view structural diagram;

[0025] Figure 3 This is a schematic diagram of the main structure of a printing dot adhesion testing device proposed in this invention. Figure 2 ;

[0026] Figure 4 This is a cross-sectional view of the tape clamp of a printing dot adhesion testing device proposed in this invention.

[0027] In the diagram: 1. Base, 2. X-axis slide, 3. Y-axis slide, 4. Z-axis slide, 5. Horizontal bar, 6. Vertical bar, 7. Cutter, 8. Controller, 9. Tape clamp, 10. Base plate, 11. Magnetic fixing strip, 91. Clamp base plate, 92. Clamping block, 93. Protrusion. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Reference Figure 1-4 A printing dot adhesion testing device includes a base plate 10. Two sets of corresponding X-axis slides 2 are provided on the upper end of the base plate 10. A Y-axis slide 3 is installed between the drive blocks of the X-axis slides 2. A Z-axis slide 4 is installed on the drive block of the Y-axis slide 3. A crossbar 5 is fixedly installed on the drive block of the Z-axis slide 4. The axis of the crossbar 5 is parallel to the axis of the X-axis slides 2. A vertical bar 6 is fixedly installed at the end of the crossbar 5. A test component mounting part for connecting with a test component is provided at the lower end of the vertical bar 6. The test component includes a cutter 7 and a tape clamp 9.

[0032] The upper surface of the base plate 10 is also provided with a recess for placing the substrate 10.

[0033] It also includes a controller 8, which is electrically connected to the X-axis slide 2, the Y-axis slide 3 and the Z-axis slide 4.

[0034] It also includes a magnetic fixing strip 11. The base plate 10 is made of metal iron. The base plate 10 is fixed by the magnetic fixing strip 11 cooperating with the base plate 10.

[0035] The cutter 7 includes a blade mounting base and blades. The lower end of the blade mounting base is fixed with evenly distributed blades. When the blade mounting base is parallel to the axis of the Y-axis slide 3, the blades are parallel to the crossbar 5.

[0036] The tape clamp 9 includes a clamp base plate 91 and a clamping block 92 connected to the test assembly mounting part. The clamp base plate 91 has a vertically arranged groove, the clamping block 92 is adapted to the groove, and the end face of the clamping block 92 away from the clamp base plate 91 is provided with a protrusion 93.

[0037] The clamp base plate 91 and the clamping block 92 are connected by magnetic force or interference fit. Both the clamping surfaces of the clamp base plate 91 and the clamping surfaces of the clamping block 92 are provided with anti-slip structures, which can be concave and convex surfaces, to ensure that the tape is clamped tightly.

[0038] A method for testing printing dot adhesion, using the aforementioned printing dot adhesion testing apparatus, includes the following steps:

[0039] Step 1: Fix the substrate 10 to the base plate 10 using the magnetic fixing strip 11;

[0040] Step 2: Install the cutter 7 at the lower end of the vertical rod 6, and draw multiple grids of a preset size through the dot surface of the base plate 10 of the cutter 7. After completion, remove the cutter 7 and install the tape clamp 9.

[0041] Step 3: Then, use tape with a preset adhesive strength to stick to the grid of the substrate 10 to be tested, fix the other end of the tape to the tape clamp 9, control the X-axis slide 2, Y-axis slide 3 and Z-axis slide 4 so that the tape is at 90° with the substrate 10 and acts upward to tear off the tape. Tear off the tape within a preset time.

[0042] Step 4: Repeat the process of applying and removing the tape to the grid at the same location a predetermined number of times; finally, check whether the printed dots on the light guide plate are intact after the tape has been applied, and evaluate the adhesion of the printed dots according to the preset standards.

[0043] In step 2, first align the blade mounting base of the cutter 7 with the axis of the Y-axis slide 3, and control the X-axis slide 2 and Z-axis slide 4 to cut. After that, align the blade mounting base of the cutter 7 with the axis of the X-axis slide 2, and control the Y-axis slide 3 and Z-axis slide 4 to cut, thus drawing a grid on the dot surface of the substrate 10. Alternatively, you can first align the blade mounting base of the cutter 7 with the axis of the X-axis slide 2, ensuring that the directions of the two cuts are perpendicular.

[0044] In step 2, when the tape clamp 9 fixes the tape, first align the edge of the tape with the groove of the clamp base plate 91, and then press the clamping block 92 on.

[0045] In step 3, when applying the tape, the tape must be parallel or perpendicular to the X-axis slide 2 to ensure that the tape is subjected to uniform force.

[0046] The printing dot adhesion testing method and apparatus proposed in this invention utilizes a base, magnetic fixing strip, three-dimensional displacement stage, action rod, fixture, testing components, and transparent testing tape to achieve semi-automatic grid division and tape pulling operations. This reduces errors in printing dot adhesion testing caused by human factors such as the magnitude, angle, speed, uniformity, and duration of the force applied, thereby improving testing accuracy and consistency.

[0047] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A printing dot adhesion testing device, comprising a base plate (10), characterized in that, The upper end of the base plate (10) is provided with two sets of corresponding X-axis slides (2), and a Y-axis slide (3) is installed between the drive blocks of the X-axis slides (2). A Z-axis slide (4) is installed on the drive block of the Y-axis slide (3). A crossbar (5) is fixedly installed on the drive block of the Z-axis slide (4). The axis of the crossbar (5) is parallel to the axis of the X-axis slide (2). A vertical bar (6) is fixedly installed at the end of the crossbar (5). A test component mounting part for connecting with the test component is provided at the lower end of the vertical bar (6). The test component includes a cutter (7) and a tape clamp (9). The upper surface of the base plate (10) is also provided with a recess for placing the substrate (10).

2. The printing dot adhesion testing device according to claim 1, characterized in that, It also includes a controller (8) which is electrically connected to the X-axis slide (2), the Y-axis slide (3) and the Z-axis slide (4).

3. The printing dot adhesion testing device according to claim 1, characterized in that, It also includes a magnetic fixing strip (11), and the base plate (10) is made of iron. The base plate (10) is fixed by the magnetic fixing strip (11) cooperating with the base plate (10).

4. The printing dot adhesion testing device according to claim 1, characterized in that, The cutter (7) includes a blade mounting base and a blade. The lower end of the blade mounting base is fixedly provided with uniformly distributed blades. When the blade mounting base is parallel to the axis of the Y-axis slide (3), the blades are parallel to the crossbar (5).

5. The printing dot adhesion testing device according to claim 1, characterized in that, The tape clamp (9) includes a clamp base plate (91) and a clamping block (92) connected to the test component mounting part. The clamp base plate (91) has a vertically arranged groove, and the clamping block (92) is adapted to the groove. The end face of the clamping block (92) away from the clamp base plate (91) is provided with a protrusion (93).

6. The printing dot adhesion testing device according to claim 1, characterized in that, The clamp base plate (91) and the clamping block (92) are connected by magnetic force or interference fit, and both the clamping surface of the clamp base plate (91) and the clamping surface of the clamping block (92) are provided with anti-slip structure.

7. A method for testing the adhesion of printed dots, characterized in that, The printing dot adhesion testing apparatus as described in any one of claims 1-6 includes the following steps: Step 1: Fix the substrate (10) to the base plate (10) using a magnetic fixing strip (11); Step 2: Install the cutter (7) at the lower end of the vertical rod (6), and draw multiple grids of a preset size through the dot surface of the cutter (7) substrate (10). After completion, remove the cutter (7) and install the tape clamp (9). Step 3: Then, use tape with a preset adhesive strength to stick to the grid of the substrate (10) to be tested, fix the other end of the tape to the tape clamp (9), control the X-axis slide (2), Y-axis slide (3) and Z-axis slide (4) so ​​that the tape is at 90° with the substrate (10) and acts upward to tear off the tape. Tear off the tape within a preset time. Step 4: Repeat the process of applying and removing the tape to the grid at the same location a predetermined number of times; finally, check whether the printed dots on the light guide plate are intact after the tape has been applied, and evaluate the adhesion of the printed dots according to the preset standards.

8. The printing dot adhesion test method according to claim 7, characterized in that, In step 2, the blade mounting seat of the cutter (7) is first parallel to the axis of the Y-axis slide (3), and the X-axis slide (2) and Z-axis slide (4) are controlled to cut. After that, the blade mounting seat of the cutter (7) is parallel to the axis of the X-axis slide (2), and the Y-axis slide (3) and Z-axis slide (4) are controlled to cut, and the grid is drawn on the dot surface of the substrate (10).

9. A method for testing the adhesion of printed dots according to claim 7, characterized in that, In step 2, when the tape clamp (9) fixes the tape, first align the edge of the tape with the groove of the clamp base plate (91), and then press the clamping block (92) on.

10. A method for testing the adhesion of printed dots according to claim 7, characterized in that, In step 3, when applying the tape, the tape must be parallel or perpendicular to the X-axis slide (2).

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