Wheel cutter for cutting a flexible glass substrate and cutting method thereof

Patent metadata

Field	Value
Publication number	US-2019127263-A1
Application number	US-201715740005-A
Country	US
Kind code	A1
Filing date	Dec 5, 2017
Priority date	Oct 26, 2017
Publication date	May 2, 2019
Grant date	—

Abstract

A wheel cutter for cutting a flexible glass substrate and a cutting method thereof are provided and the wheel cutter has a first disk surface and a second disk surface; a circumferential cutting edge formed by the first disk surface and the second disk surface extending outwardly and intersecting each other; a central shaft hole; and a hollow region connected to the central shaft hole; a plurality of recesses distributed on the circumferential cutting edge and communicating with the hollow region; wherein the hollow region is a double cone structure configured to allow cleaning an inside of the wheel cutter.

First claim

What is claimed is:

1 . A wheel cutter for cutting a flexible glass substrate, comprising:
a first disk surface; a second disk surface disposed opposite to the first disk surface; a circumferential cutting edge formed by the first disk surface and the second disk surface extending outwardly and intersecting each other; a central shaft hole defined through central portions of the first disk surface and the second disk surface; and a hollow region formed by the first disk surface engaged with the second disk surface, the hollow region connected to the central shaft hole and configured to temporarily store flexible polymer scraps, wherein the hollow region is centrally symmetric; a plurality of recesses distributed on the circumferential cutting edge, communicating with the hollow region, and configured to bring the flexible polymer scraps in the hollow region to store therein; wherein the hollow region is a double cone structure configured to allow insertion of a cleaning device thereinto to clean an inside of the wheel cutter.

2 . The wheel cutter as claimed in claim 1 , wherein a length of an opening of each of the recesses is within a range of the hollow region.

3 . The wheel cutter as claimed in claim 1 , wherein each of the recesses is a symmetrically V-shaped structure having straight arms, and a bottom opening thereof is arced.

4 . The wheel cutter as claimed in claim 1 , wherein an outer diameter of the wheel cutter is 1.5 mm-4 mm, a thickness of the wheel cutter is 0.5 mm-1.3 mm, and a diameter of the central shaft hole is 0.7 mm-1.5 mm.

5 . The wheel cutter as claimed in claim 1 , wherein two opposite sides of the hollow region in the wheel cutter intersect the central shaft hole to form two intersected portions and a width of each intersect portion is 0.3 mm-1 mm.

6 . The wheel cutter as claimed in claim 3 , wherein a depth of each of the recesses is 1 um-15 um, a number of the recesses is 10-300, and a radius of the arc of the bottom of each of the recesses is 0.2 um-1 um.

7 . The wheel cutter as claimed in claim 6 , wherein the recesses are evenly distributed on the circumferential cutting edge, and a width of the circumferential cutting edge between adjacent two of the recesses is larger than or equal to a width of the recess.

8 . The wheel cutter as claimed in claim 1 , wherein an angle of the circumferential cutting edge is an obtuse angle, and a range of angle thereof is 95°-135°.

9 . A flexible glass substrate cutting method using the wheel cutter as claimed in claim 1 , wherein the flexible glass substrate cutting method comprising steps as follows:
step S 101 , selecting a wheel cutter according to characteristics of the flexible glass substrate; step S 102 , mounting the selected wheel cutter to a wheel cutter cutting machine, testing accuracy and/or smoothness of cutting by a test piece, and repeating the current step for 8 to 15 times; step S 103 , determining that a cutting performance of the wheel cutter is good and the wheel cutter is used for cutting the flexible glass substrate if the cutting test shows that an amount of cutting marks is less than 200 um, cutting lines of the flexible layer are not apparently damaged, and severed pieces are not broken; and step S 104 , after the flexible glass substrate is cut for 200 m-500 m, detaching the wheel cutter, inserting a cleaning fixture into the wheel cutter, and spraying alcohol out through the cleaning fixture to wash the wheel cutter such that residual flexible material scraps inside the wheel cutter are cleaned.

10 . A wheel cutter for cutting a flexible glass substrate, comprising:
a first disk surface; a second disk surface disposed opposite to the first disk surface; a circumferential cutting edge formed by the first disk surface and the second disk surface extending outwardly and intersecting each other; a central shaft hole defined through central portions of the first disk surface and the second disk surface; and a hollow region formed by the first disk surface engaged with the second disk surface, the hollow region connected to the central shaft hole and configured to temporarily store flexible polymer scraps; a plurality of recesses distributed on the circumferential cutting edge, communicating with the hollow region, and configured to bring the flexible polymer scraps in the hollow region to store therein; wherein the hollow region is a double cone structure configured to allow an insertion of a cleaning device thereinto to clean an inside of the wheel cutter.

11 . The wheel cutter as claimed in claim 10 , wherein a length of an opening of each of the recesses is within a range of the hollow region.

12 . The wheel cutter as claimed in claim 10 , wherein each of the recesses is a symmetrically V-shaped structure having straight arms, and a bottom opening thereof is arced.

13 . The wheel as claimed in claim 10 cutter, wherein an outer diameter of the wheel cutter is 1.5 mm-4 mm, a thickness of the wheel cutter is 0.5 mm-1.3 mm, and a diameter of the central shaft hole is 0.7 mm-1.5 mm.

14 . The wheel cutter as claimed in claim 10 , wherein two opposite sides of the hollow region in the wheel cutter intersect the central shaft hole to form two intersected portions and a width of each intersect portion is 0.3 mm-1 mm.

15 . The wheel cutter as claimed in claim 12 , wherein a depth of each of the recesses is 1 um-15 um, a number of the recesses is 10-300, and a radius of the arc of the bottom of each of the recesses is 0.2 um-1 um.

16 . The wheel cutter as claimed in claim 15 , wherein the recesses are evenly distributed on the circumferential cutting edge, and a width of the circumferential cutting edge between adjacent two of the recesses is larger than or equal to a width of the recess.

17 . The wheel cutter as claimed in claim 10 , wherein an angle of the circumferential cutting edge is an obtuse angle, and a range of angle thereof is 95°-135°.

Assignees

• Wuhan China Star Optoelectronics Semiconductor Display Tech Co Ltd

Inventors

• Du Xiao

Classifications

• C03B33/02

  Cutting or splitting sheet glass {or ribbons}; Apparatus or machines therefor (C03B33/09 takes precedence; glass-cutting tools C03B33/10) · CPC title

• C03B33/107 Primary

  Wheel design, e.g. materials, construction, shape · CPC title