1. Technical Field
The present disclosure relates to a glue dispensing apparatus and a glue dispensing method using the glue dispensing apparatus.
2. Description of Related Art
A glue dispensing apparatus includes a glue dispensing head. Glue in the glue dispensing apparatus flows out of the glue dispensing apparatus from the glue dispensing head. Yet, the glue often blocks the glue dispensing head because of a cold temperature increasing the viscosity of the glue.
Therefore, it is desired to provide a glue dispensing apparatus and a glue dispensing method which can overcome the above mentioned problems.
The container 10 is a hollow stepped cylinder, and defines a receiving hole 11 (see
The glue dispensing head 30 is fixed at the thin end 13. The glue dispensing head 30 includes a plug 31 and a glue dispensing ring 33. The plug 31 is a cylinder, and includes a first end surface 310, a second end surface 312, and a peripheral surface 314. Through holes 316 extend from the first end surface 310 to the second end surface 312. The through holes 316 are adjacent to the peripheral surface 314. A screw thread 318 is formed on the peripheral surface 314. The plug 31 is inserted into the receiving hole 11. The first end surface 310 is positioned in the receiving hole 11. The second end surface 312 is exposed outside the container 10. The screw threads 15, 318 are engaged with each other to fix the plug 31 on the container 10. In other embodiment, the plug 31 can be fixed on the container 10 by other means such as bonding.
The glue dispensing ring 33 is made of porous material, such as porous sponge. The glue dispensing ring 33 is fixed at the second end surface 312 and covers the through holes 316. The glue 70 flows into the glue dispensing ring 33 along the through holes 316 and is absorbed by the glue dispensing ring 33. By pressing the glue dispensing ring 33, the glue 70 is extruded from the glue dispensing ring 33.
Also referring to
Referring to
Step S1: a barrel 50, a lens 52, and a spacer 54 are provided. The lens 52 and the spacer 54 are put into the barrel 50 in order to obtain an unfinished lens module which is ready for gluing (RFG module 51). The spacer 54 includes an annular projection 55. A groove 56 is formed between the annular projection 55 and the inner wall of the barrel 50.
Step S2: the glue dispensing apparatus 100 is provided. The glue dispensing apparatus 100 is fixed on a driving apparatus 80. The driving apparatus 80 can drive the glue dispensing apparatus 100 towards or away from the RFG module 51.
Step S3: the heating unit 40 is activated to heat the glue 70 received in the glue dispensing apparatus 100.
Step S4: the glue dispensing apparatus 100 is moved towards the RFG module 51 until the glue dispensing ring 33 contacts a bottom wall of the groove 56.
Step S5: the glue dispensing ring 33 is lightly pressed to make the glue 70 stored in the glue dispensing ring 33 flow into the groove 56.
Step S6: the glue dispensing apparatus 100 is moved away from the RFG module 51. The glue 70 in the groove 56 bonds the spacer 54 and the barrel 50 together to obtain a finished lens module.
It is to be understood, however, that even though numerous characteristics and advantages of the present embodiments have been set forth in the foregoing description, together with details of the structures and functions of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed.
Number | Date | Country | Kind |
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101131634 | Aug 2012 | TW | national |