Hot-forming tool for producing glass containers
A hot-forming tool for producing glass containers is provided. The tool includes a forming roller, a holder, and a heat sink. The forming roller has a forming surface. The holder receives the forming roller with the forming roller rotatably mounted on the holder. The heat sink is directly or indirectly connected to the holder. The forming roller is in thermal contact with the heat sink and the heat sink has an internal cooler so that process heat can be transferred from the forming roller to the heat sink.
1. A hot-forming tool for producing glass containers, comprising:
a forming roller with a forming surface;
a holder having the forming roller mounted on the holder for rotation with respect to the holder; and
a heat sink arranged circumferentially around the holder and directly or indirectly connected to the holder,
wherein the forming roller and the heat sink form corresponding thermal contact surfaces on two lateral surfaces of the heat sink and on an upper side of the heat sink, and
wherein the heat sink has a cooling device so that process heat can be transferred from the forming roller to the heat sink.
2. The hot-forming tool of claim 1 , wherein the forming roller and the holder are detachably connected to one another.
3. The hot-forming tool of claim 1 , wherein the holder is integrally formed with or is part of the heat sink.
4. The hot-forming tool of claim 1 , wherein the forming roller and the heat sink have mutually corresponding contact surfaces between which a gap is formed.
5. The hot-forming tool of claim 4 , wherein the gap is filled with fluid oil.
6. The hot-forming tool of claim 4 , wherein the gap has a distance of less than 0.5 mm.
7. The hot-forming tool of claim 6 , wherein the distance is between 0.05 mm and 0.15 mm.
8. The hot-forming tool of claim 4 , wherein the forming roller and heat sink are configured in such a manner that the corresponding contact surfaces have a surface area of at least 0.25 πR 2 , where R is a radius of the forming roller.
9. The hot-forming tool of claim 1 , wherein the cooling device comprises a transmission channel for a fluid coolant.
10. The hot-forming tool of claim 9 , wherein the heat sink has an annular portion at an outer region through which the transmission channel extends.
11. The hot-forming tool of claim 9 , wherein the heat sink comprises an upper segment and a lower segment that are tightly connected to one another and between which a portion of the transmission channel runs.
12. The hot-forming tool of claim 11 , further comprising sealing elements are arranged between the upper segment and the lower segment.
13. The hot-forming tool of claim 1 , wherein the heat sink comprises a material selected from a group consisting of aluminum, copper, an aluminum alloy, and a copper alloy.
14. A device for the production of glass containers comprising the hot-forming tool of claim 1 .
15. A hot-forming tool for producing glass containers, comprising:
a holder;
a forming roller with a forming surface, the forming roller being rotatably mounted on the holder;
a heat sink non-rotatably connected to the holder between the forming roller and the holder so that the forming roller is in thermal contact with the heat sink; and
a cooling device cooling the heat sink,
wherein the forming roller and heat sink are configured in such a manner that corresponding contact surfaces have a surface area of at least 0.25 πR 2 , where R is a radius of the forming roller.
16. The hot-forming tool of claim 15 , wherein the heat sink is arranged around an outer circumference of the holder to define a gap therebetween.
17. The hot-forming tool of claim 16 , further comprising fluid oil in the gap.
18. The hot-forming tool of claim 15 , wherein the cooling device comprises a transmission channel for a fluid coolant.
19. A hot-forming tool for producing glass containers, comprising:
a forming roller with a forming surface;
a holder, the forming roller being rotatably mounted on the holder;
a heat sink directly or indirectly connected to the holder and in thermal contact with the forming roller; and
a cooling device so that process heat can be transferred from the forming roller to the heat sink,
wherein the heat sink comprises an upper segment and a lower segment having sealing elements arranged therebetween so as to define a portion of a coolant transmission channel through the heat sink.
20. A hot-forming tool for producing glass containers, comprising:
a holder;
a forming roller with a forming surface, the forming roller being rotatably mounted on the holder;
a heat sink non-rotatably connected to the holder between the forming roller and the holder so that the forming roller is in thermal contact with the heat sink;
a cooling device cooling the heat sink, wherein the heat sink is arranged around an outer circumference of the holder to define a gap therebetween; and
fluid oil in the gap.
21. A hot-forming tool for producing glass containers, comprising:
a holder;
a heat sink;
a forming roller with a forming surface;
a bearing mounting the forming roller on the holder such that the forming roller is rotatable with respect to the holder and with respect to the heat sink and such that the forming roller is in thermal contact with the heat sink; and
a cooling device in communication with the heat sink to thermally transfer process heat of the forming roller from the heat sink.