Encapsulation mold

• US 9,352,491 B2
• Filed: 11/05/2013
• Issued: 05/31/2016
• Est. Priority Date: 11/05/2012
• Status: Active Grant

• Current Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Original Assignee: Saint-Gobain Glass France (Compagnie De Saint-Gobain)
• Inventors: Sheng, Pingchun
• Primary Examiner(s): Davis, Robert B
• Application Number:
  US14/424,782
• Publication Number:
  US 20150224677A1
• Time in Patent Office: 938 Days
• Field of Search: 425/116, 264/252
• US Class Current: 1/1
• CPC Class Codes: B29C 33/20 Opening, closing or clamping
• CPC Class Codes: B29C 45/14377 using an additional insert, e.g. a fastening element
• CPC Class Codes: B29C 45/14434 Coating brittle material, e.g. glass B29C45/14377, B29C45/14418 take precedence
• CPC Class Codes: B29C 45/14778 the article consisting of a material with particular properties, e.g. porous, brittle
• CPC Class Codes: B29L 2031/3052 Windscreens

Abstract

An encapsulation mold is provided, which may include an upper mold, a lower mold and a clamping device. The clamping device includes a rubber anti-slip block fixed to a joint surface of the upper mold, and a rubber anti-slip block fixed to a joint surface of the lower mold, wherein both of the rubber anti-slip blocks can fix the glass tightly. Therefore, after the upper mold and the lower mold are pressed against each other, these rubber anti-slip blocks may deform and apply a couple of forces having opposite directions to the glass. Under this couple of forces, the glass can be completely fixed in the encapsulation mold, which can avoid glass to be crushed caused by glass moving during injection molding. Meanwhile, because these rubber anti-slip blocks are elastic, they can play an anti-slip role and prop the glass, which may prevent the glass 40 from breakage.

Claims

1. An encapsulation mold, comprising:

an upper mold;

a lower mold; and

a clamping device which comprises a first rubber anti-slip block fixed to a joint surface of the upper mold, and a second rubber anti-slip block fixed to a joint surface of the lower mold, wherein the first rubber anti-slip block has a first surface and the second rubber anti-slip block has a second surface, and when the upper mold is pressed against the lower mold, the first rubber anti-slip block and the second rubber anti-slip block overlap at least in part, and a minimum distance between the first rubber anti-slip block and the second rubber anti-slip block is less than a thickness of a glass to be encapsulated,

wherein the first surface of the first rubber anti-slip block is concave, and the second surface of the second rubber anti-slip block is convex;

or, the first surface of the first rubber anti-slip block is convex, and the second surface of the second rubber anti-slip block is concave, and

wherein a concave one of the first and second surfaces is configured to match a convex surface of the glass to be encapsulated, and a convex one of the first and second surfaces is configured to match a concave surface of the glass to be encapsulated.

2. The encapsulation mold according to claim 1, wherein the encapsulation mold has equal numbers of the first rubber anti-slip blocks and the second rubber anti-slip blocks.

3. The encapsulation mold according to claim 1, wherein the minimum distance between the first rubber anti-slip block and the second rubber anti-slip block equals to a distance between the first surface of the first rubber anti-slip block and the second surface of the second rubber anti-slip block, and when the upper mold is pressed against the lower mold, the distance between the first surface of the first rubber anti-slip block and the second surface of the second rubber anti-slip block is about 0.15 mm to about 0.25 mm less than the thickness of the glass to be encapsulated.

9. The encapsulation mold according to claim 1, wherein the first rubber anti-slip block is provided with a rubber bump located on and extending from the first surface, and the second rubber anti-slip block is provided with a rubber bump located on and extending from the second surface, and wherein

the minimum distance between the first rubber anti-slip block and the second rubber anti-slip block equals to a distance between the surface of the rubber bump of the first rubber anti-slip block and the surface of the rubber bump of the second rubber anti-slip block, and wherein

when the upper mold is pressed against the lower mold, the first rubber anti-slip block and the second rubber anti-slip block overlap completely, the rubber bump of the first rubber anti-slip block and the rubber bump of the second rubber anti-slip block overlap at least in part, and the distance between the first surface of the first rubber anti-slip block and the second surface of the second rubber anti-slip block equals to the thickness of the glass to be encapsulated.

10. The encapsulation mold according to claim 9, wherein the first rubber anti-slip block has a first groove formed on the first surface, and the second rubber anti-slip block has a second groove formed on the second surface;

and the rubber bump of the first rubber anti-slip block is embedded in the first groove and extends higher than the first surface, and the rubber bump of the second rubber anti-slip block is embedded in the second groove and extends higher than the second surface.

11. The encapsulation mold according to claim 10, wherein the rubber bump embedded in the first groove extends about 0.45 mm to about 0.55 mm higher than the first surface, and the rubber bump embedded in the second groove extends about 0.45 mm to about 0.55 mm higher than the second surface.

4. An encapsulation mold, comprising:

an upper mold;

a lower mold; and

a clamping device which comprises a first rubber anti-slip block fixed to a joint surface of the upper mold, and a second rubber anti-slip block fixed to a joint surface of the lower mold,

wherein the first rubber anti-slip block has a first surface and the second rubber anti-slip block has a second surface, and when the upper mold is pressed against the lower mold, the first rubber anti-slip block and the second rubber anti-slip block overlap at least in part, and a minimum distance between the first rubber anti-slip block and the second rubber anti-slip block is less than a thickness of a glass to be encapsulated, and

wherein the clamping device is provided with three or more first rubber anti-slip blocks and three or more second rubber anti-slip blocks, and the three or more first rubber anti-slip blocks and the three or more second rubber anti-slip blocks are respectively arranged in a polygon pattern.

5. An encapsulation mold, comprising:

an upper mold;

a lower mold; and

a clamping device which comprises a first rubber anti-slip block fixed to a joint surface of the upper mold and a second rubber anti-slip block fixed to a joint surface of the lower mold,

wherein the first rubber anti-slip block has a first surface and the second rubber anti-slip block has a second surface, and when the upper mold is pressed against the lower mold, the first rubber anti-slip block and the second rubber anti-slip block overlap at least in part, and a minimum distance between the first rubber anti-slip block and the second rubber anti-slip block is less than a thickness of a glass to be encapsulated,

wherein the clamping device further comprises a third rubber anti-slip block fixed to the joint surface of the upper mold, and a fourth rubber anti-slip block fixed to the joint surface of the lower mold, and

wherein a width of the third rubber anti-slip block and a width of the fourth rubber anti-slip block are less than that of the first rubber anti-slip block and that of the second rubber anti-slip block, respectively, and

wherein the third rubber anti-slip block has a third surface which is adapted for clamping the glass to be encapsulated, and the fourth rubber anti-slip block has a fourth surface which is adapted for clamping the glass to be encapsulated, and

wherein the third rubber anti-slip block has a third groove formed on the third surface; and

the fourth rubber anti-slip block has a fourth groove formed on the fourth surface, and

wherein when the upper mold is pressed against the lower mold, the third rubber anti-slip block and the fourth rubber anti-slip block overlap at least in part, and a distance between the third surface of the third rubber anti-slip block and the fourth surface of the fourth rubber anti-slip block is less than the thickness of the glass to be encapsulated; and

the third rubber anti-slip block is located closer to an edge of the upper mold compared with the first rubber anti-slip block, and the fourth rubber anti-slip block is located closer to an edge of the lower mold compared with the second rubber anti-slip block, and

wherein the clamping device has equal numbers of the third rubber anti-slip blocks and the fourth rubber anti-slip blocks.

6. The encapsulation mold according to claim 5, wherein when the upper mold is pressed against the lower mold, the distance between the third surface of the third rubber anti-slip block and the fourth surface of the fourth rubber anti-slip block is about 0.15 mm to about 0.25 mm less than the thickness of the glass to be encapsulated.

7. The encapsulation mold according to claim 5, wherein the clamping device is provided with three or more third rubber anti-slip blocks and three or more fourth rubber anti-slip blocks, and the three or more third rubber anti-slip blocks and the three or more fourth rubber anti-slip blocks are respectively arranged in a polygon pattern.

8. The encapsulation mold according to claim 5, wherein the third groove and the fourth groove respectively have a substantially V-shaped, square or W-shaped cross section.