Bonding devices and bonding methods for irregular-shaped curved cover plates and flexible screens
A bonding device and a bonding method for an irregular-shaped curved cover plate and a flexible screen are disclosed. The bonding device includes: a support body supporting the flexible screen; and a bonding body supporting the flexible screen together with the support body and pressing the flexible screen. The bonding body has a cylindrical shape. A cross-sectional shape of the bonding body along an axial direction matches with a cross-sectional shape of the irregular-shaped curved cover plate. The support body is located at a radial end of the bonding body. The bonding body can be expanded along the axial direction, to have opposite sides thereof abutted against the arc hook areas.
1. A bonding device, adapted for attaching an irregular-shaped curved cover plate to a flexible screen, wherein the irregular-shaped curved cover plate comprises a flat area and a pair of arc hook areas located on opposite sides of the flat area and extending from the flat area, the bonding device comprising:
a support body configured for supporting the flexible screen; and
a bonding body configured for supporting the flexible screen together with the support body, and configured for pressing the flexible screen onto the irregular-shaped cover plate including the arc hook areas, the bonding body having a cylindrical shape extending in an axial direction and including two ends, the two ends of the bonding body respectively corresponding to the arc hook areas of the irregular-shaped curved cover plate, a cross-sectional shape of the bonding body along the axial direction matching with a cross-sectional shape of the irregular-shaped curved cover plate, the support body being located at a radial end of the bonding body, the bonding body being capable of expanding along the axial direction, to have opposite sides thereof abutted against the arc hook areas.
2. The bonding device according to claim 1 , wherein the bonding body comprises two bonding half cylinders disposed axially symmetrically, each of the bonding half cylinders comprising a skeleton layer, and an elastic pressing layer wrapped outside the skeleton layer, and the skeleton layer and the elastic pressing layer comprising an inflatable gas film cavity formed therebetween.
3. The bonding device according to claim 2 further comprising:
a connecting rod extending through an interior of the two bonding half cylinders along the axial direction, an interior of the connecting rod having a first air passage in communication with the gas film cavity; and
a driving rod vertically connected to the connecting rod, an interior of the driving rod having a second air passage in communication with the first air passage.
4. The bonding device according to claim 3 further comprising a gas source inflating the gas film cavity of the bonding body, the gas source being connected to the driving rod.
5. The bonding device according to claim 4 , wherein the gas source is a telescopic cylinder.
6. The bonding device according to claim 5 , wherein the telescopic cylinder is fixed to a top of one end of the support body adjacent to the bonding body.
7. The bonding device according to claim 3 , wherein each bonding half cylinder further comprises a bonding half cylinder bearing located in the skeleton layer, the bonding half cylinder bearing is sleeved on an outer side of the connecting rod and abuts against an inner wall of the skeleton layer.
8. The bonding device according to claim 3 further comprising a driving device connected to the support body and driving the support body to move along a direction perpendicular to the axial direction of the bonding body.
9. The bonding device according to claim 2 , wherein the elastic pressing layer is a silica gel layer.
10. The bonding device according to claim 1 , further comprising a cover plate positioning fixture for positioning the irregular-shaped curved cover plate.