Sealant supplementing method and device for LED display screen lamp panel module and application method of sealant supplementing device

Abstract

The invention belongs to the field of LED display screen manufacturing and specifically relates to a sealant supplementing method and device for an LED display screen lamp panel module and an application method of the sealant supplementing device. The sealant supplementing method comprises the following step of a, conducting air injection on the edge of the LED display screen lamp panel module toenable the surface of a filling sealant to vibrate to promote the filling sealant to flow until the sealant permeates into gaps between LED lamp beads and borders to fully fill in all the gaps. The sealant supplementing device comprises an air injection component and a module fixing component. The air injection component comprises a high-pressure air source and an air injection head communicatingwith the high-pressure air source. The air injection head is provided with air nozzles. An air injection head fixing device is connected with the module fixing component through a lifting mechanism. The high-pressure air source is provided with an adjusting valve and an air pressure gauge. Compared with a fine wire manual-pulling sealant supplementing method, the sealant supplementing method and device for the LED display screen lamp panel module, provided by the invention, are easy to operate and higher in efficiency.

Description

technical field [0001] The invention belongs to the field of LED display manufacturing, and in particular relates to a glue filling method, device and application for LED display lamp panel modules. Background technique [0002] Outdoor LED displays are widely used in large squares, traffic road information signs and other occasions. A large LED display screen is usually composed of dozens of standard LED display cabinets; a standard LED display cabinet is composed of dozens of LED display light board modules; therefore manufacturing A high-quality LED display requires reliable and stable quality of each LED display light panel module. [0003] The LED display light board module is usually integrated and assembled by LED lamp beads, panels, circuit boards and outer frames. The smaller the spacing of the LED lamp beads, the higher the pixel density of the final LED display screen and the better the effect. However, the small-pitch LED lamp beads will bring difficulties to t...

AI Technical Summary

Problems solved by technology

However, the small-pitch LED lamp beads will bring difficulties to the LED display light board module potting waterproof sealant, such as figure 1 As shown, the smaller the spacing of the LED lamp beads, the smaller the gap between the LED lamp beads on the outside of each light board module and the frame will inevitably shrink. The sealing glue is generally more viscous and relatively weak in fluidity. , because the LED lamp beads in the middle of the module are connected to all directions, there is no problem. It is more difficult for the potting glue to flow in the narrow gap between the outermost LED lamp beads and the outer frame edge, so only the glue filling machine is used. For the glue filling of the light board module, if the glue is not filled in the edge gap of the module, the sealant potting will not be in place, which will affect the waterproof sealing of the light board module, and then affect the quality of the entire LED display

In the prior art, the thin wire drawing method is usually used to drain the glue to the periphery to fill the gap, that is, after the glue filling machine pours glue on the light board module, the operator is then asked to hold a thin wire around the module to pull the glue around the periphery of the module. The gap, after the gap is completely filled, the disadvantage of this method is that it has high requirements for the staff who pull the thin wire, and the action should not be too fast, otherwise the glue will overflow, and it should not be too slow, otherwise the glue will solidify and cannot be pulled, and the personnel need to be highly concentrated during the work process Spiritual but prone to fatigue, resulting in quality problems

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