Dispensing needle head

Abstract

The invention provides a glue adding pinhead used for adding glue to a place needing glue addition of a lens module. The glue adding pinhead comprises a plurality of glue outlets and at least one ultraviolet light source, and the ultraviolet rays emitted by the ultraviolet light source are used for curing the glue. With a plurality of the glue outlets, the pinhead can realize even glue addition and spreading for one time and speed up the process of adding glue; after the process of adding glue is finished, the ultraviolet light source carried by the pinhead is started for curing the glue, with the operation time being saved.

Description

technical field [0001] The invention relates to a glue dispensing device, in particular to a quick glue dispensing needle used for applying glue to a place where glue needs to be applied in a lens module. 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 The shown lens module 100 includes a lens mount 110 , a lens barrel 120 , a lens group 121 , a spacer ring 122 , and a filter 123 . Wherein, the lens group 121, the spacer ring 122, and the optical filter 123 are tightly fixed together. The lens barrel 120 is threaded into the lens holder 110 to be fixed. [0003] During the assembly process of the lens module, the optical filter 123 and the spacer ring 122 are generally fixed by a dispensing process (see A New Method of Flip Chip Assembly Using a Light Silver Filled Glue, Electronics Systemintegration Technology Conference, 2006.1 st ...

AI Technical Summary

Problems solved by technology

However, this method has many problems in automatic dispensing. For example, the dispensing needle needs to be rotated multiple times to fill the area to be glued, and the dispensing needle needs to be positioned multiple times, which is not only time-consuming, but also easily leads to different glue output each time. Inaccurate positioning of the dispensing needle will cause dispensing failure and affect the quality of dispensing, which will directly affect the quality of the lens module, because one of the reasons for the failure of the lens module during use is the lens module. The detachment of the filter 123

When the lens module is assembled, especially when the optical filter 123 is fixed on the spacer ring 122, if dispensing quality problems such as uneven dispensing and insufficient dispensing amount occur, it will seriously affect the quality of the optical filter 123 and the spacer ring. Adhesion between 122

Since the adhesion between the optical filter 123 and the spacer ring 122 is not strong, the probability of failure of the lens module due to the detachment of the optical filter 123 during use will be greatly increased

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