Glass compression molding machine

Abstract

The invention discloses a glass compression molding machine which comprises a glass molding chamber, a lower mold cavity in the glass molding chamber, an upper mold head matched with the glass molding chamber, a power device used for applying pressure to the upper mold head and ensuring the upper mold head to have a displacement, a cooling device for quickly cooling the lower mold cavity and the glass molding chamber, a displacement sensor and a control system, wherein the upper mold head is internally provided with a heater; the glass molding chamber is provided with a temperature sensor; the displacement sensor is connected with the upper mold head; the control system can be used for controlling the power device according to signals output by the temperature sensor and the displacement sensor to ensure that the pressure of the upper mold head is changed along with the change of the temperature of the glass molding chamber; the glass compression molding machine can also comprise an evacuating device and an aerating device; the power device preferentially comprises an air cylinder, an air source, three five-way valves and a speed regulation valve; and the control system comprises an electric control proportional valve, a PLC (Programmable Logic Controller), an AD (alternating current) digital processor, a touch screen and a power supply module. The glass compression molding machine can improve the finished product rate and the quality of finished products and can be suitable for mass production.

Description

technical field [0001] The invention relates to the technical field of glass compression molding, in particular to a glass compression molding machine for manufacturing aspherical optical glass. Background technique [0002] At present, the aspherical glass molding machine first places the glass preform between the upper mold core and the lower mold core, and then heats the glass preform. When the glass preform reaches a certain temperature, the servo motor is used to push the upper and lower molds. Jen, extrude the preform to become the shape of the glass lens we need. This kind of equipment is formed at one time by constant pressure; due to the high pressure required for instant forming, the glass preform in the mold will often be broken, and it is not easy to control the refractive index and internal stress of the finished product during instant forming, which makes the quality of mass production It is extremely unstable. On the other hand, constant pressure molding ...

AI Technical Summary

Problems solved by technology

This kind of equipment is formed at one time by constant pressure; due to the high pressure required for instant forming, the glass preform in the mold will often be broken, and it is not easy to control the refractive index and internal stress of the finished product during instant forming, which makes the quality of mass production It is extremely unstable. On the other hand, constant pressure molding also has its big disadvantage that the mold and the glass material are closely bonded to each other under high pressure for a long time, which greatly increases the bonding probability of the glass and the mold and reduces the yield.

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