Lower unit for glass polishing system and glass polishing method using the same
A lower unit for a glass polishing system includes a support installed to a rotatable turntable, and a carrier having a supporting part for supporting a glass to be polished, and a placing part formed in a surface opposite to the supporting part and fixed and placed to the support.
1. A lower unit for a glass polishing system, comprising:
a support installed to a rotatable turntable;
a carrier having a supporting part for supporting a glass to be polished, and a placing part formed in a surface opposite to the supporting part and fixed and placed to the support; and
a mounting pad installed on the supporting part such that the glass to be polished is mounted thereon, wherein the placing part of the carrier further includes a protrusion protruded on a rim of the carrier to surround a side of the support.
2. The lower unit for a glass polishing system according to claim 1 , further comprising:
an adhesion sheet interposed between the support and the carrier.
3. The lower unit for a glass polishing system according to claim 1 ,
wherein the carrier is made of any one material selected from the group consisting of stainless steel, aluminum, polycarbonate (PC), polypropylene (PP) and polyethylene (PE).
4. The lower unit for a glass polishing system according to claim 1 ,
wherein the carrier has a thickness ranging from about 1.0 millimeter to about 20.0 millimeters.
5. The lower unit for a glass polishing system according to claim 4 ,
wherein, in case the carrier is made of stainless steel, the carrier has a thickness of about 1.0 millimeter to about 2.0 millimeters.
6. The lower unit for a glass polishing system according to claim 4 ,
wherein, in case the carrier is made of polycarbonate, the carrier has a thickness of about 4.0 millimeters to about 10.0 millimeters.
7. The lower unit for a glass polishing system according to claim 1 ,
wherein the support is made of any one material selected from the group consisting of stainless steel, aluminum, carbon steel, tin, granite, polymer concrete and high-strength concrete.
8. The lower unit for a glass polishing system according to claim 1 ,
wherein the support has a thickness ranging from about 50 millimeters to about 500 millimeters.
9. A glass polishing method, comprising:
(a) placing a carrier having a glass to be polished thereon to a support installed to a turntable;
(b) contacting an upper unit having a polishing pad installed thereto to the glass;
(c) supplying a polishing slurry to the glass to be polished through the upper unit; and
(d) moving the upper unit and the turntable with respect to each other,
wherein, in the step (a), the glass to be polished is supported on a mounting pad in a state that the mounting pad is interposed on the carrier, and wherein, in the step (a), the support is inserted into a space formed between protrusions formed on a rim of the carrier and formed in a lower surface of the carrier to fix the carrier.
10. The glass polishing method according to claim 9 , further comprising:
separating the carrier from the support, in case the glass is completely polished.
11. The glass polishing method according to claim 9 ,
wherein, in the step (a), an adhesion sheet is interposed on the support to place the carrier thereto.