Glue-injection machine for lens

Abstract

The invention provides a glue-injection machine for a lens. The machine comprises an adhesive tape tearing and pasting device, a glue-injection device, a feeding device, a glue-injection smearing device and a blanking device, wherein the adhesive tape tearing and pasting device, the glue-injection device and the feeding device are arranged on the rack. According to the glue-injection machine for the lens, the manual glue-injection action of workers can be simulated, the production efficiency is stable, and the situation that the workers stay in a production environment with volatile glue for along time is avoided, which helps to reduce the adverse effect on the health of the workers. A glue-injection speed control mechanism is adopted for replacing an electromagnetic valve, the manufacture cost is low, the manual operation of the workers can be simulated so as to complete the action of tearing and pasting the adhesive tape, the production efficiency is stable, and the situation that the workers stay in the production environment with volatile glue for a long time is avoided, which helps to reduce the adverse effect on the health of the workers.

Description

technical field [0001] The invention relates to the technical field of spectacle lens production, in particular to a device capable of injecting glue into a lens mold. Background technique [0002] In the lens production process, the preparation process of injecting glue into the lens mold, drying and shaping, and demolding is usually adopted. Please refer to figure 1 As shown, the lens mold 2 includes two templates 21 arranged in parallel and at intervals, and tapes are wound around the outer peripheries of the two templates 21, and the two templates 21 and the tape together form a cavity with the same shape as the lens. For the convenience of glue injection, there is a tap 22 at the joint where the tape is wound. When injecting glue, hold the tap 22 and tear off a section of the tape to expose the top injection port for injecting glue into the cavity. The tape fits and closes the cavity. [0003] Usually, the glue injection is done manually by workers. The disadvantage ...

AI Technical Summary

Problems solved by technology

[0005] Most of the glue injection devices in the prior art can only control the on-off of the valve, the glue injection speed is constant, and it is easy to generate air bubbles and overflow glue. A few glue injection devices that can control the glue injection speed control the solenoid valve opening through the industrial control system. The disadvantage is that the manufacturing cost is relatively high. At the same time, the ideal glue injection process is simulated by controlling the opening of the solenoid valve through the industrial control system. Since the stroke range of the solenoid valve is very small, it is not conducive to the industrial control system to achieve partition control. The control of the industrial control system very difficult

[0006] Further research by the applicant found that usually the action of tearing and pasting the tape is done manually by workers. The disadvantage is that the production efficiency is not stable, and the glue used for lens production is volatile. adverse health effects

[0007] A small number of devices that can automatically tear the tape tear the tape by pulling in a straight line (for example, the Chinese patent application with application number CN201810376158.7). The disadvantage of pulling the tape to tear it in a straight line is that the direction of the tape tap 22 cannot adapt to the change of the arc of the tape when the jaw moves, and the force direction of the tape is always changing during the tearing process, which makes the tape tension difficult to be even. If the tape is controlled within an appropriate range, it is easy to cause irreversible deformation of the tape due to excessive pulling, and it cannot be re-attached after the glue is injected. It is also easy to be tensioned when the tape is too small when it is attached, resulting in local bulges during lamination. Drum kit (disobedient)

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