Prime coating method for preventing glue failure of curved surface machine

Abstract

The invention relates to a prime coat method for preventing glue failure of a curved surface machine. The prime coat method comprises the following steps: 1) adjusting the flow speed of a prime coat drop of an auxiliary jig; (2) the liquid crystal panel is taken out from the original box, the back face of the liquid crystal panel faces the auxiliary jig, and a primer is smeared on the upper side of the long edge of the liquid crystal panel and the joint of the foam, with double-face gum, on the rubber frame; the method comprises the following steps of (1) coating a bottom coating agent on a liquid crystal panel, (2) coating the bottom coating agent on the liquid crystal panel, (3) placing the liquid crystal panel coated with the bottom coating agent on a conveying belt and conveying the liquid crystal panel to a worker or a machine for aligning and assembling the liquid crystal panel, (4) pressing a rubber frame, foam with double-sided back glue and the liquid crystal panel for pressure maintaining, and (5) inspecting and shiping.The production process is simplified, glue failure of the curved surface machine can be effectively prevented, material selection is easy, and the application range is wide.

Description

Technical Field

[0001] The invention relates to the technical field of a laminating process for assembling a liquid crystal panel of a display into a liquid crystal module, and in particular to a primer coating method for preventing a curved surface machine from debonding. Background Art

[0002] Common liquid crystal panels (OPEN CELL, referred to as liquid crystal panels) are assembled into liquid crystal modules. Double-sided foam adhesive is usually used to bond the liquid crystal panel and the adhesive frame together. This method is used on special models with high curvature and limited bonding surface. The adhesive is easy to debond after bonding, and it takes a lot of time and materials to rework the product after debonding. In addition, it is easy to be affected by the environment during production and use, causing debonding, resulting in the product being unable to be used normally. Summary of the invention

[0003] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a primer method for preventing the debonding of curved surface machines.

[0004] To achieve the above object, the present invention adopts the following technical solutions: A primer coating method for preventing curved surface machine models from debonding comprises the following steps: 1) Adjust the flow rate of the primer dripping of the auxiliary fixture; 2) Take out the LCD panel from the original box, let the back of the LCD panel face the auxiliary fixture, and apply primer on the upper side of the long side of the LCD panel and the connection between it and the double-sided adhesive foam on the glue frame; 3) The LCD panel coated with primer is placed on a transmission belt and sent to personnel or machinery for alignment and assembly of the LCD panel; 4) Press and hold the plastic frame, double-sided adhesive foam, and LCD panel; 5) Inspect shipment.

[0005] Furthermore, the auxiliary fixture includes a support frame, a universal mechanical arm frame, a pen tube, and a container bag; The container bag is arranged on the support frame, the liquid outlet at the bottom of the container bag is connected to a drip bucket, the bottom of the drip bucket is connected to a pen tube through a hose, and the hose is connected to a flow rate regulating valve; the liquid outlet of the pen tube is connected to a dust-free cloth cover; One end of the universal mechanical arm frame is connected to the support frame, and the pen tube is clamped and fixed on the other end of the universal mechanical arm frame; Furthermore, the container bag is placed in a protective box.

[0006] Furthermore, the flow rate adjustment of the primer dripping in step 1) includes the following steps: a. Introduce the primer into the container bag of the auxiliary fixture; b. Replace the dust-free cloth cover before use; c. Gradually increase the flow rate regulating valve to control the dripping rate to: 3~7 seconds / drop.

[0007] Furthermore, in step c, the speed of controlling the dripping of the primer needs to ensure the flow rate of the primer, which can meet the requirements of wet cloth application without causing excessive dripping of the primer to cause waste.

[0008] Furthermore, the step 4) pressing and holding pressure includes the following steps: a. Adjust the total pressure gauge and pressure value according to different machine models; b. Pressure-sensitive paper test; c. Place the product and maintain pressure for production; d. Check the appearance of the product after completion.

[0009] Furthermore, in step a, the total pressure gauge pressure is adjusted to 0.4~0.5 MPa, the total pressure on the touch screen is adjusted to 90~240kPa and the 6 sub-point pressure values ​​are adjusted to 15~40kPa, and adjustments are made according to the characteristics of the machine model. During the adjustment, ensure that the cylinder used for pressing is raised and lowered smoothly, and the pressure at each point is uniform and meets the requirements.

[0010] Furthermore, after the pressure-sensitive paper is tested in step b, the appearance of the pressure-sensitive paper is ensured to be uniform and clear.

[0011] Furthermore, the holding time of the press machine in step c is calculated as 10 seconds, starting from the time when the cylinder is pressed down to the time when the cylinder is ready to rise.

[0012] The present invention adopts the above technical solution, simplifies the production process, can effectively prevent the curved surface machine from debonding, and is easy to select materials and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments: Figure 1 It is a structural schematic diagram of the auxiliary fixture in the present invention. DETAILED DESCRIPTION

[0014] The present invention discloses a primer coating method for preventing the debonding of curved surface machines, wherein an auxiliary jig is used for primer coating, such as Figure 1 As shown, the auxiliary fixture includes a support frame 8, a universal mechanical arm frame 7, a pen tube 2, and a container bag 6.

[0015] The container bag 6 is arranged on the support frame 8, the liquid outlet at the bottom of the container bag 6 is connected to a drip bucket 5, the bottom of the drip bucket 5 is connected to a pen tube 2 through a hose 3, and a flow rate regulating valve 4 is connected to the hose 3; the liquid outlet of the pen tube 2 is connected to a dust-free cloth cover 1. Function of the dust-free cloth cover 1: the primer drips from the container bag 6 through the hose 3 into the dust-free cloth cover 1, so that the dust-free cloth is kept moist, and then the back of the liquid crystal panel is smeared against the dust-free cloth cover 1 of the auxiliary fixture, completing the primer coating function on the back of the liquid crystal panel.

[0016] One end of the universal mechanical arm frame 7 is connected to the support frame 8 , and the pen tube 2 is clamped and fixed on the other end of the universal mechanical arm frame 7 ; the container bag 6 is placed in the protective box 9 .

[0017] The method for primer coating of the present invention specifically comprises the following steps: 1) Adjust the flow rate of the primer dripping of the auxiliary fixture; 2) Take out the LCD panel from the original box, let the back of the LCD panel face the auxiliary fixture, and apply primer on the upper side of the long side of the LCD panel and the connection between it and the double-sided adhesive foam on the glue frame; 3) The LCD panel coated with primer is placed on a transmission belt and sent to personnel or machinery for alignment and assembly of the LCD panel; 4) Press and hold the plastic frame, double-sided adhesive foam, and LCD panel; 5) Inspect shipment.

[0018] Furthermore, the flow rate adjustment of the primer dripping in step 1) includes the following steps: a. The primer is introduced into the auxiliary jig container bag 6; b. Replace the dust-free cloth cover 1 before use; c. Gradually increase the flow rate regulating valve 4 to control the dripping rate to: 3~7 seconds / drop.

[0019] In step c, the speed of controlling the dripping of the primer needs to ensure the flow rate of the primer, which can meet the requirements of wet cloth application without causing excessive dripping of the primer to cause waste.

[0020] Step 4) Pressing and holding pressure includes the following steps: a. Adjust the total pressure gauge and pressure value according to different machine models; b. Pressure-sensitive paper test; c. Place the product and maintain pressure for production; d. Check the appearance of the product after completion.

[0021] In step a, adjust the total pressure gauge pressure to 0.4~0.5 MPa, adjust the total pressure on the touch screen to 90~240kPa and the 6 sub-point pressure values ​​to 15~40kPa, and make adjustments based on the characteristics of the machine model. During the adjustment, ensure that the cylinder used for pressing can be raised and lowered smoothly, and the pressure at each point is uniform and meets the requirements.

[0022] Step b: After testing the pressure-sensitive paper, make sure that the appearance of the pressure-sensitive paper is uniform and clear.

[0023] Step c: The holding time of the press machine is calculated as 10 seconds, starting from the time the cylinder is pressed down to the time the cylinder is ready to rise.

[0024] The above describes a specific embodiment of the present invention, but those skilled in the art should understand that this is only an example. Those skilled in the art can make various changes or modifications to this embodiment without departing from the principle and essence of the present invention, but these changes and modifications will fall within the scope of protection of the present invention.

Claims

1. A primer coating method for preventing the adhesive from coming apart on curved surface machines, characterized in that: It includes the following steps: 1) Adjust the flow rate of the auxiliary fixture primer dripping; 2) Take out the LCD panel from the original box, let the back of the LCD panel face the auxiliary fixture, and apply primer on the upper side of the long side of the LCD panel and the connection between it and the double-sided adhesive foam on the glue frame; 3) The LCD panel coated with primer is placed on a transmission belt and sent to personnel or machinery for alignment and assembly of the LCD panel; 4) Press and hold the plastic frame, double-sided adhesive foam, and LCD panel; 5) Inspect shipment.

2. A primer coating method for preventing debonding of curved surface machines according to claim 1, characterized in that: The auxiliary fixture includes a support frame, a universal mechanical arm frame, a pen tube, and a container bag; The container bag is arranged on the support frame, the liquid outlet at the bottom of the container bag is connected to a drip bucket, the bottom of the drip bucket is connected to a pen tube through a hose, and the hose is connected to a flow rate regulating valve; the liquid outlet of the pen tube is connected to a dust-free cloth cover; One end of the universal mechanical arm frame is connected to the support frame, and the pen tube is clamped and fixed on the other end of the universal mechanical arm frame.

3. A primer coating method for preventing debonding of curved surface machines according to claim 2, characterized in that: The container bag is placed in a protection box.

4. A primer coating method for preventing debonding of curved surface machines according to claim 2, characterized in that: The flow rate adjustment of the primer dripping in step 1) includes the following steps: a. Introduce the primer into the container bag of the auxiliary fixture; b. Replace the dust-free cloth cover before use; c. Gradually increase the flow rate regulating valve to control the dripping rate to: 3~7 seconds / drop.

5. A primer coating method for preventing debonding of curved surface machines according to claim 4, characterized in that: In the step c, the speed of controlling the dripping of the primer needs to ensure the flow rate of the primer, which can meet the requirements of wet cloth application without causing excessive dripping of the primer to cause waste.

6. A primer coating method for preventing debonding of curved surface machines according to claim 4, characterized in that: The step 4) pressing and holding pressure comprises the following steps: a. Adjust the total pressure gauge and pressure value according to different machine models; b. Pressure-sensitive paper test; c. Place the product and maintain pressure for production; d. Check the appearance of the product after completion.

7. A primer coating method for preventing debonding of curved surface machines according to claim 6, characterized in that: In step a, adjust the total pressure gauge pressure to 0.4-0.5 MPa, adjust the total pressure on the touch screen to 90-240 kPa and the 6 sub-point pressure values ​​to 15-40 kPa, and make adjustments based on the characteristics of the machine model. During the adjustment, ensure that the cylinder used for pressing is lifted and lowered smoothly, and the pressure at each point is uniform and meets the requirements.

8. A primer coating method for preventing debonding of curved surface machines according to claim 1, characterized in that: After the pressure-sensitive paper is tested in step b, ensure that the pressure-sensitive paper has a uniform and clear appearance.

9. A primer coating method for preventing debonding of curved surface machines according to claim 1, characterized in that: The pressure holding time of the press in step c is calculated as 10 seconds, starting from the time the cylinder is pressed down to the time the cylinder is ready to rise.

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