IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0679455
(2007-02-27)
|
등록번호 |
US-7507081
(2009-03-24)
|
우선권정보 |
WO-PCT/CA01/00527(2001-04-12) |
발명자
/ 주소 |
- Guenther,Hans
- Olaru,George
|
출원인 / 주소 |
- Mold Masters (2007) Limited
|
대리인 / 주소 |
McDonnell Boehnen Hulbert & Berghoff LLP
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
141 |
초록
▼
A nozzle system is provided for an injection molding machine. The nozzle system includes a nozzle tip that is removably connected to a nozzle body with a sealing and mounting sleeve element. The nozzle body includes a first connector for releasably connecting with a second connector defined on the s
A nozzle system is provided for an injection molding machine. The nozzle system includes a nozzle tip that is removably connected to a nozzle body with a sealing and mounting sleeve element. The nozzle body includes a first connector for releasably connecting with a second connector defined on the sleeve. The sleeve element further includes an alignment bearing for engaging a bearing surface defined on the nozzle body for precisely locating the nozzle tip within the nozzle body along on a predetermined axis. Further embodiments of the invention provide a valve pin disposed in the nozzle body and nozzle tip. The valve pin includes a bearing surface for engaging a guiding surface defined on the second melt channel for aligning the end of the valve pin with a mold gate. Further embodiments also provide an integrally connected nozzle tip and sleeve element.
대표청구항
▼
What is claimed is: 1. A hot-runner nozzle comprising: a nozzle body having a central melt bore; a tip having a tip melt duct in communication with the central melt bore for delivering melt to a mold gate; a seal member circumferentially surrounding at least a portion of the tip, the seal member ha
What is claimed is: 1. A hot-runner nozzle comprising: a nozzle body having a central melt bore; a tip having a tip melt duct in communication with the central melt bore for delivering melt to a mold gate; a seal member circumferentially surrounding at least a portion of the tip, the seal member having a seal portion for sealing against a cavity part; and a connector member having a portion that circumferentially surrounds at least a portion of the tip and contacts the tip, the connector member having a thread mated to a thread of the nozzle body; wherein the seal member is bonded to the connector member and the seal member is a metal material that is less thermally conductive than a material of the connector member. 2. The hot-runner nozzle of claim 1, wherein the seal member and the connector member are bonded to each other at a planar interface. 3. The hot-runner nozzle of claim 1, wherein the seal member is brazed to the connector member. 4. The hot-runner nozzle of claim 1, wherein the tip is of a material that is more thermally conductive than the material of the seal member. 5. The hot-runner nozzle of claim 1, wherein the material of the tip comprises tungsten carbide, beryllium copper, or copper alloy. 6. The hot-runner nozzle of claim 1, wherein the material of the seal member comprises high speed steel, H13 stainless steel, or titanium. 7. The hot-runner nozzle of claim 1, wherein the material of connector member comprises beryllium copper or copper alloy. 8. An injection molding apparatus, comprising: a melt distribution manifold having a melt passage; a heated nozzle having a central bore, the melt passage to convey heated melt to the central bore; a tip having a tip melt duct; a seal member; and a connector member engaged to the nozzle and having a connector melt duct, the tip melt duct and the connector melt duct forming a melt duct through which heated melt from the central bore of the nozzle flows; wherein the tip, the seal member, and the connector member are integrally joined. 9. The injection molding apparatus of claim 8, wherein the tip, the seal member, and the connector member are integrally joined by brazing. 10. The injection molding apparatus of claim 8, wherein the tip, the seal member, and the connector member are integrally joined by welding. 11. The injection molding apparatus of claim 8, wherein the tip, the seal member, and the connector member are integrally joined by thermally bonding. 12. The injection molding apparatus of claim 8, wherein the tip, the seal member, and the connector member are integrally joined by thermally expanding. 13. The injection molding apparatus of claim 8, wherein the tip, the seal member, and the connector member are integrally joined by interference fitting. 14. The injection molding apparatus of claim 8, wherein the connector member is threaded and adapted to engage a mating thread in the nozzle. 15. The injection molding apparatus of claim 8, wherein the connector member is more thermally conductive than the seal member. 16. The injection molding apparatus of claim 8, wherein seal member is made of H13 stainless steel, high speed steel, or titanium. 17. The injection molding apparatus of claim 8, wherein connector member is made of beryllium copper or other alloys of copper. 18. The injection molding apparatus of claim 8, wherein the tip is made of tungsten carbide, beryllium copper, or other copper alloys. 19. A hot-runner nozzle comprising: a nozzle body having a melt bore; a tip having a tip melt duct in communication with the melt bore for delivering melt to a mold gate; and a sleeve assembly surrounding and contacting the tip, the sleeve assembly comprising a seal member and a connector member that are integrally joined; wherein the seal member is a metal piece less thermally conductive than the connector member. 20. The hot-runner nozzle of claim 19, wherein the seal member is a separate piece from the connector member. 21. The hot-runner nozzle of claim 19, wherein the seal member is a bonded to the connector member. 22. The hot-runner nozzle of claim 19, wherein the seal member is brazed to the connector member. 23. The hot-runner nozzle of claim 19, wherein the seal member is made of H13 steel, stainless steel, or high speed steel. 24. The hot-runner nozzle of claim 19, wherein the tip is wear resistant. 25. The hot-runner nozzle of claim 19, wherein the tip is corrosion resistant. 26. The hot-runner nozzle of claim 19, wherein the tip is made of tungsten carbide. 27. The hot-runner nozzle of claim 19, wherein the tip is made of copper. 28. The hot-runner nozzle of claim 19, wherein the tip is made of copper alloy. 29. The hot-runner nozzle of claim 19, wherein the connector member is more thermally conductive than the tip. 30. The hot-runner nozzle of claim 19, wherein the connector member is made of copper or copper alloy. 31. The hot-runner nozzle of claim 19, wherein the tip and the connector member are made of copper. 32. The hot-runner nozzle of claim 19, wherein the tip and the connector member are made of the same material. 33. A hot-runner nozzle, comprising: a nozzle body having a melt bore; a tip member having a tip melt duct; and an assembly connecting the tip member to the nozzle body, the assembly comprising: a first member contacting an end of the tip member, the first member having a first melt duct connecting the tip melt duct to the melt bore of the nozzle, the first member made of metal; and a second member surrounding at least a portion of a cylindrical outer surface of the tip member, the second member made of metal; wherein the first and second members are thermally bonded together. 34. The hot-runner nozzle of claim 33, wherein the first and second members are brazed together. 35. The hot-runner nozzle of claim 33, wherein the first and second members are welded together. 36. The hot-runner nozzle of claim 33, wherein the assembly comprises a thread mated to a thread of the nozzle body. 37. The hot-runner nozzle of claim 33, wherein the tip member is thermally bonded to the assembly. 38. The hot-runner nozzle of claim 33, wherein the tip member comprises copper. 39. The hot-runner nozzle of claim 38, wherein the assembly comprises a thread mated to a thread of the nozzle body. 40. The hot-runner nozzle of claim 33, wherein the second member comprises a front seal portion.
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