Glue dropping device

Abstract

The invention relates to a spot gluing device which includes principal part, connecting bar and drive device. The principal part possesses a containing cavity and at least one continuous sidewall, thecontinuous sidewall possesses at least one outlet hole connected with containing cavity. The connection bar includes the first connecting end and the second connecting end, the first connecting end is connected with the principal part, and the second connecting end is connected with the drive device. The drive device is used to drive the principal part rotate along the central axes. The centrifugating smearing device can smear gluewater evenly on joint between interval ring and drawtube, so production of spot gluing can be quickened, quality of spot gluing can be ensured, adhesion force between separating ring and filter piece can be increased, rate of invalidation for fall filter can be decreased.

Description

technical field [0001] The invention relates to a glue dispensing device, in particular to a centrifugal coating rapid glue dispensing device used for lens module assembly. Background technique [0002] A lens module applied to a camera or an optical instrument is usually composed of a lens barrel and a lens mount equipped with optical elements. see figure 1 , is a lens module 100, which includes a lens mount 10, a lens barrel 20, a lens group 201, a spacer ring 202 and an optical filter 203, wherein the lens group 201, the spacer ring 202 and the optical filter 203 are sequentially along the optical axis direction Fixed in the lens barrel 20, the spacer ring 202 and the filter 203 are tightly fixed together. The outer wall of the lens barrel 20 and the inner wall of the lens holder 10 are provided with matching threads, and the lens barrel 20 is threaded into the lens holder 10 to be fixed. [0003] During the assembly process of the lens module, the optical filter and t...

AI Technical Summary

Problems solved by technology

However, this method has many problems in automatic dispensing. For example, the dispensing needle needs to be positioned multiple times. It directly affects the quality of the lens module, because one of the reasons why the lens module fails during use is that the filter in the lens module falls off

During the assembly process of the lens module, especially when fixing the optical filter on the spacer ring, if there are dispensing quality problems such as uneven dispensing and insufficient dispensing amount, it will seriously affect the distance between the filter and the spacer ring. Adhesion

Due to the weak adhesion between the optical filter and the spacer ring, the probability of lens module failure due to the detachment of the optical filter during use will be greatly increased

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