US 8,152,706 B2 · Method and mechanism for rolling an opening perforation line

Abstract

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.

Claims12

Dependent claims

A rolling mechanism for having an opening perforation line on a plastic packaging film, comprising:

a carriage frame;
a pressure bearing unit, comprising:
a pressure bearing seat, having a receptacle channel;
an anvil roll, positioned in the receptacle channel of the pressure bearing seat;
and
a retention plate, which is engaged with the pressure bearing seat and is located at one side of the receptacle channel to have the anvil roll retained in the receptacle channel of the pressure bearing seat;
an impact cushioning mechanism, which is coupled between the carriage frame and the pressure bearing seat of the pressure bearing unit;
and
an opening cutter assembly, which is arranged adjacent to the anvil roll of the pressure bearing unit and comprises a rotatable opening cutter shaft and at least one opening cutter blade mounted to the opening cutter shaft;
wherein when 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, an impact is applied to the anvil roll and absorbed by the impact cushioning mechanism, whereby the anvil roll can endure the impact applied thereto.

7 more elements

A method for rolling an opening perforation line in a plastic packaging film, wherein a carriage frame is provided with a pressure bearing unit and an opening cutter assembly arranged adjacent to the pressure bearing unit, the pressure bearing unit comprising a pressure bearing seat that defines a receptacle channel, a retention plate, and an anvil roll, an impact cushioning mechanism coupled between the carriage frame and the pressure bearing seat of the pressure bearing unit, a long retention bar engaged to one side of the carriage frame, a resilient cushioning mechanism being provided at a central portion of the long retention bar, the opening cutter assembly comprising a rotatable opening cutter shaft and at least one opening cutter blade mounted to the opening cutter shaft, the method comprising the following steps:

(a) setting the anvil roll of the pressure bearing unit in the receptacle channel of the pressure bearing seat to have a contact edge of the anvil roll facing the opening cutter assembly;
(b) rotating the opening cutter shaft of the opening cutter assembly to drive the opening cutter blade to rotate with a predetermined angular speed;
(c) having the opening cutter blade rolling on the contact edge of the anvil roll of the pressure bearing unit at the time when the opening cutter blade rotates to reach a position corresponding to the anvil roll of the pressure bearing unit;
(d) rolling to form the opening perforation line on the plastic packaging film, at a location of which is touched the contact edge of the anvil roll since the opening cutter blade is rolled on the contact edge of the anvil roll;
and
(e) absorbing an impact applied to the anvil roll with the resilient cushioning mechanism and the impact cushioning mechanism so as to allow the anvil roll to bear the impact.

3 more elements

Dependencies are inferred from the claim text.

Method and mechanism for rolling an opening perforation line

Life of this patent

Method and mechanism for rolling an opening perforation line

Life of this patent

Abstract

Claims12