Method for spotting glue for lens module

Abstract

The invention provides a dispensing method for a lens module group. The invention comprises the steps that a lens module group for dispensing, a stage and a dispensing device are provided; the lens module group for dispensing is fixed and mounted on the stage; the stage is revolved so that the lens module group for dispensing rotates with the speed of 400 to 600 rounds per minute; the dispensing device is used for the dispensing of the lens module group; after the predetermined amount of glue is formed on the lens module group, the dispensing device stops dispensing; the revolution of the stage is stopped. In the technology scheme, the stage rotates continuously with the speed of 400 to 600 rounds per minute, so that the glue is coated on the inner wall of the drawtube and the periphery of the spacing ring exactly due to the great centrifugal force, and the overflow of the glue is prevented. Even the dispensing pinhead has a certain distance with the inner wall of the drawtube during the dispensing process, the glue can be coated by spin on the inner wall of the drawtube and the periphery of the spacing ring exactly due to the centrifugal force, which ensures the dispensing quality of the lens module group.

Description

technical field [0001] The invention relates to a glue dispensing method, in particular to a glue dispensing method for a lens module. Background technique [0002] A lens module applied to a camera or an optical instrument usually includes a lens mount, a lens barrel, a lens group, a spacer ring and a filter, wherein the lens group, the spacer ring and the filter are sequentially fixed in the lens barrel along the optical axis , the spacer ring and the filter are tightly fixed together. The outer wall of the lens barrel and the inner wall of the lens holder are provided with matching threads, and the lens barrel is screwed into the lens holder through the threads to be fixed. [0003] During the assembly process of the lens module, the optical filter and the spacer ring are generally fixed by a dispensing process. In the process of dispensing, first provide a lens module to be dispensing, then put the dispensing needle of the dispensing device against the intersection of ...

AI Technical Summary

Problems solved by technology

[0004] However, due to the better fluidity of the glue, in the dispensing method of the prior art, when the dispensing needle is rotated to apply the glue on the spacer ring, the glue is easy to flow so that the phenomenon of glue overflow often occurs, that is, the glue flows from the spacer ring to the effective spacer ring. clear aperture thus contaminating the lens

In addition, when the positioning of the dispensing needle is not accurate enough, and there is a certain distance between the positioning position and the position to be dispensed, the glue will not be accurately applied to the position to be applied, which will cause poor dispensing and affect the optical and mechanical properties of the lens module.

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