Replaceable mold cavities
View Patent ↗A replaceable cavity insert for use in a multi-cavity compression mold, wherein each cavity insert is friction fitted into a respective mold recess. Each insert has a substantially semi-spherical insert surface and defined in the surface is an inverted dimple pattern of a golf ball. Each cavity insert has an O-ring recessed in the upper perimeter to limit the flow of heating and cooling fluids beyond the perimeter. The cavity insert and the O-ring are retained in the recess of the frame by a pair of removable cavity retainer screws and washers, which are countersunk into the frame and have an edge of the washer disposed in a cut-out section of the insert. Each cavity insert may be separately and individually removed from the frame by just loosening the retaining screws without the need to remove the entire frame from the press or disconnecting the utility lines leading to the frame.
1. A replaceable cavity insert for use in a multi-cavity compression mold, each cavity insert comprising:
a tapered construction for friction fitting into a recess defined in the compression mold;
each cavity insert having an arcuate inner surface defining an inverted dimple pattern of a golf ball;
each cavity insert having an O-ring located about the perimeter of an upper section of the insert for limiting the flow of fluids beyond the perimeter;
a pair of semi-circular cut-out sections on an upper surface of each cavity insert; and
a pair of removable cavity retainer screws, each screw countersunk into the compression mold, an edge of the screw disposed over the cut-out section of the cavity insert to retain the cavity insert and secure the O-ring,
wherein the cavity insert may be quickly and individually removed without the need to remove the entire mold or to disconnect utility lines therein.
2. The cavity insert according to claim 1 , wherein a baked-on mold release is applied to the concave surface of each cavity insert at a temperature between about 600° F. to 750° F.
3. The cavity insert according to claim 1 , wherein each cavity insert is made of a high thermal conductive metal.
4. The cavity insert according to claim 1 , wherein the height of each cavity insert is less than the height of the corresponding recess therein only requiring the O-ring in the upper section of the insert.
5. The cavity insert according to claim 1 , wherein the cavity insert is utilized for casting a cover on a golf ball subassembly.
6. The cavity insert according to claim 1 , wherein the cavity insert is utilized for casting an inner layer on a golf ball subassembly.
7. A method of placing a cavity insert into a multi-cavity compression mold frame without removing the mold frame from a hydraulic press, the method comprising:
providing in the frame a tapered recess sized to accommodate the cavity insert;
inserting into the recess by friction fit the cavity insert and a single O-ring displaced about the top portion of the insert; and
retaining the insert and O-ring within the recess by a pair of threaded screws and accompanying washers,
wherein the cavity insert may be removed from the frame by loosening the screws and manually lifting the cavity insert out of the frame.
8. The method according to claim 7 , wherein a baked-on mold release is applied to a concave inner surface of each cavity insert at a temperature between about 600° F. to 750° F.
9. The method according to claim 7 , wherein each cavity insert is made of a high thermal conductive metal.
10. The method according to claim 7 , wherein the height of each cavity insert is less than the height of the corresponding recess therein only requiring the O-ring in the upper section of the insert.
11. The method according to claim 7 , wherein the cavity insert is utilized to cast a cover on a golf ball subassembly.
12. The method according to claim 7 , wherein the cavity insert is utilized for casting an inner layer on a golf ball subassembly.