Plastic lens shearing device

Abstract

The plastic lens cutting device comprises a body on the No.1 slide track driven to slide along the No.1 direction and made of positioning fixture driven to move along the No.2 direction in lifting displacement, and cutting device along the No.2 direction in open and close displacement, which supports a symmetrical pair of cam groove and cam plate bracket driven by the driving source and upper and lower guide plates for upper and lower cutter respectively, supporting inside the symmetrical cam groove of the cam plate frame using rolling wheels, driving the closing and opening movement of the upper and lower cutter to cut the plastic lens.

Description

technical field [0001] The invention relates to a shearing device for plastic lenses, in particular to a curved design using a cam groove, which enables the upper and lower cutters to perform relative motions with multi-stage variable speeds when cutting the lenses, thereby effectively reducing the motion inertia and obtaining Shearing device for plastic lenses with good movement characteristics. Background technique [0002] Plastic lenses have been widely used in photographic lenses of mobile phones or digital cameras. Plastic lenses are made by injection molding. Therefore, after injection molding, there may be scraps formed by many sprues or runners on the plastic lenses. Therefore, plastic lenses Before assembling with the lens barrel, it is necessary to go through the procedure of cutting the leftovers before proceeding to the next operation procedure, and the procedure of cutting the leftovers is to transfer the lens to the shearing machine for operation. [0003] se...

AI Technical Summary

Problems solved by technology

[0005] Since the shearing device uses the pressure cylinder 10 as the driving source, and the kinematic characteristics of the pressure cylinder 10 itself are acceleration and deceleration motions with sudden rise and decrease at the starting point and the end point, when the pressure cylinder 10 shrinks, the upper cutter 11 and the lens When the shear point on the edge of 18 touches, it cannot reach a complete stop at high speed immediately, but will produce a motion inertia, which will cause the upper cutter 11 to hit the shear point on the edge of the lens 18, and When the lower template 14 drives the lower cutter 12 to rise to cut the lens 18, the cutting is carried out at a relatively high speed, which is not only unfavorable for cutting, but also when the lens is cut and the moment of contact with the upper cutter 11, its motion inertia will also be reduced. As a result, the lower cutter 12 hits the upper cutter 11, which can easily reduce the service life of the cutter

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