Chan Li Machinery Co., Ltd.

Asustek Computer Inc.

Wei-Hsin Hsu

Ching-Hwa Liu

Chun-Hsiang Tsai

An opening cutter assembly for forming an opening perforation line in a plastic packaging film by rolling the plastic packaging film between the opening cutter assembly and an anvil roll of a rolling mechanism when the plastic packaging film is fed through the rolling mechanism. The opening cutter assembly includes an opening cutter shaft, at least one opening cutter seat, and at least one opening cutter blade. The opening cutter shaft has at least one containing compartment. The opening cutter seat is installed in and engaged to the containing compartment by a cutter seat mounting mechanism. The opening cutter blade is mounted to each opening cutter seat. When the opening cutter blade gets worn out due to long term operation and must be replaced, simply dismounting the cutter seat mounting mechanism allows the opening cutter seat and the opening cutter blade to be removed from the containing compartment.

Opening cutter assembly for having opening perforation line on plastic packaging film

A rolling mechanism for having an opening perforation line on a plastic packaging film is disclosed, including a carriage frame, a pressure bearing unit, an impact cushioning mechanism, and an opening cutter assembly. The pressure bearing unit includes a pressure bearing seat, an anvil roll, and a retention plate, wherein the retention plate comprises a receptacle channel. The retention plate is used to position the anvil roll in the receptacle channel of the pressure bearing seat. The impact cushioning mechanism is coupled between the carriage frame and the pressure bearing seat. The opening cutter assembly is arranged adjacent to the anvil roll, which includes an opening cutter shaft and at least one opening cutter blade attached to the periphery of the opening cutter shaft. The opening cutter assembly is driven to rotate so as to have the opening cutter blade rolling on the anvil roll of the pressure bearing unit and an impact applied to the anvil roll or the pressure bearing unit is absorbed by the impact cushioning mechanism.

Method and mechanism for rolling an opening perforation line

The present invention provides a method for controlling a focus speed of a pick-up head while performing a layer jump operation over a multi-layer optical disk in an optical information reproducing apparatus. The optical information reproducing apparatus includes the pick-up head, an actuator and a counter. The pick-up head has an objective lens positioned over a first focus of the multi-layer optical disk and in response to a signal reflected from the multi-layer optical disk, will generate a RF level signal and. The actuator is electronically connected to the pick-up head for driving the objective lens to perform the layer jump operation in response to a kick pulse signal. The counter generates a counter value in response to the kick pulse signal. The method comprises the steps of sending the kick pulse signal to the actuator for kicking the objective lens out of the first focus; processing the RF level signal and the counter value for generating a speed control data according to a predetermined procedure; and driving the objective lens to a second focus through the actuator in response to the speed control data.

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Taipei, Taiwan

Wei-Hsin Hsu