IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0868757
(2004-06-17)
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등록번호 |
US-7275926
(2007-10-02)
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발명자
/ 주소 |
- Gomes,Manuel
- Gaul,Harald
- Meksavanh,Bounoth
- Yen,Beilei
- Romeo,Anna Lozyk
|
출원인 / 주소 |
- Gomes,Manuel
- Gaul,Harald
- Meksavanh,Bounoth
- Yen,Beilei
- Romeo,Anna Lozyk
|
인용정보 |
피인용 횟수 :
6 인용 특허 :
3 |
초록
▼
The present invention is a hot runner nozzle design consisting of a nozzle core with slotted flange seated inside a slotted nozzle housing, a nozzle tip seated on the nozzle core, and a nozzle tip seal seated on the nozzle tip. Furthermore, the present invention is a quick assembly hot runner nozzle
The present invention is a hot runner nozzle design consisting of a nozzle core with slotted flange seated inside a slotted nozzle housing, a nozzle tip seated on the nozzle core, and a nozzle tip seal seated on the nozzle tip. Furthermore, the present invention is a quick assembly hot runner nozzle design. The present nozzle design provides for the easy installation and removal of the nozzle by means of turning and sliding the nozzle. This provides for easy installation or removal of the nozzle when servicing the mold in the machine and without the complete disassembly of the hot runner mold. The seal located on the nozzle tip seals the tip area to avoid plastic leakage. Positioning the seal closer to the gate area also contributes in increased nozzle tip mass thus resulting in a better heat distribution profile along the nozzle tip, and especially in the area closer to the gate. This eliminates nozzle tip freeze up, a critical matter for inside center gate applications that may have extended nozzle tips or tight pitch applications. Furthermore, the seal seated on the nozzle tip allows for a better concentric alignment of the nozzle to gate. Also, positioning the seal close to the gate area decreases color change time because of less volume being trapped around the nozzle tip.
대표청구항
▼
We claim: 1. A hot runner nozzle assembly for an injection mold comprising: a. an elongated nozzle core having a longitudinal axis and opposite first and second ends and a nozzle core melt channel extending along the longitudinal axis, b. a nozzle tip mounted to the first end of the nozzle core, th
We claim: 1. A hot runner nozzle assembly for an injection mold comprising: a. an elongated nozzle core having a longitudinal axis and opposite first and second ends and a nozzle core melt channel extending along the longitudinal axis, b. a nozzle tip mounted to the first end of the nozzle core, the nozzle tip having a nozzle tip melt channel, the nozzle tip being coaxially aligned with the nozzle core such that the nozzle tip melt channel and the nozzle core melt channels are aligned, the nozzle tip having a gate, c. the nozzle core having a flange portion formed on the second end, the flange portion having a bulge extending from the axis of the nozzle core, d. a nozzle housing mounted to a hot runner manifold, the nozzle housing having an opening dimensioned and configured to receive the flange portion of the nozzle core, the nozzle housing having a shoulder portion and a slot, the slot being dimensioned to permit the bulge of the flange portion to pass through the slot when the bulge and the slot are aligned, the flange portion and the nozzle housing being dimensioned and configured to permit the flange to rotate in the housing between a first position wherein the bulge of the flange is aligned with the slot of the housing to permit the nozzle core to be inserted and removed from the housing and a second position wherein the bulge of the nozzle core abuts the shoulder of the housing thereby preventing the nozzle core from being removed from the nozzle housing, and e. a locking member for releasably locking the flange in its second position. 2. A hot runner nozzle assembly as defined in claim 1 wherein the nozzle tip and the nozzle core are made of different metal alloys, the metal alloy forming the nozzle tip having a higher heat conductivity than the alloy forming the nozzle core. 3. A hot runner nozzle assembly as defined in claim 2 wherein the nozzle tip is made of an alloy of BeCu. 4. A hot runner nozzle assembly as defined in claim 3 wherein the nozzle tip further comprises a nozzle seal positioned immediately adjacent the gate. 5. A hot runner nozzle assembly for an injection mold comprising: a. an elongated nozzle core having a longitudinal axis and opposite first and second ends and a nozzle core melt channel extending along the longitudinal axis, b. a nozzle tip mounted to the first end of the nozzle core, the nozzle tip having a nozzle tip melt channel, the nozzle tip being coaxially aligned with the nozzle core such that the nozzle tip melt channel and the nozzle core melt channels are aligned, c. the nozzle core having a connector portion formed on the second end, d. a hot runner manifold having a melt channel outlet, e. a nozzle housing mounted to the hot runner manifold adjacent the melt channel outlet, the nozzle housing and the connector portion forming a quick connect coupling configured to mount the nozzle core on the manifold with the nozzle core's melt channel in alignment with the melt channel outlet of the hot runner manifold. 6. A hot runner nozzle as defined in claim 5 wherein the connector portion of the nozzle core forms a flange and wherein the nozzle housing has an opening dimensioned and configured to receive the flange, the nozzle housing being further dimensioned and configured to permit the nozzle flange to be rotated between a first position wherein the nozzle may be readily inserted or removed from the opening and a second position wherein the flange is firmly retained in the nozzle housing. 7. A hot runner nozzle as defined in claim 6 further comprising a locking member mounted to the nozzle housing for locking the flange in its second position. 8. A hot runner nozzle as defined in claim 7 wherein the locking member comprises a set screw which is dimensioned to prevent the flange from rotating when the flange is in its second position and when the screw is mounted in the housing. 9. A hot runner nozzle as defined in claim 6 wherein the flange has at least one perpendicularly projecting bulge and wherein the housing has a shoulder portion and at least one slot dimensioned to receive the bulge, the housing being dimensioned and configured to firmly retain the bulge against a shoulder portion when the flange is rotated into its second position. 10. A hot runner nozzle as defined in claim 9 further comprising a lock member for preventing the flange from rotating from its second position into its first position. 11. A hot runner nozzle as defined in claim 10 wherein the lock member comprises a set screw mountable in the housing. 12. A hot runner nozzle as defined in claim 1 wherein the lock member comprises a set screw mountable in the housing. 13. A hot runner nozzle as defined in claim 12 wherein the shoulder has a passage dimensioned and configured to receive the set screw. 14. A hot runner nozzle as defined in claim 1 wherein the flange portion has a plurality of bulges separated by a plurality of slots and wherein the nozzle housing has a plurality of shoulders separated by a plurality of housing slots, the bulges and slots of the flange and the shoulders and slots of the housing being dimensioned and configured to permit the flange portion to be inserted and removed from the housing when the bulges of the flange are aligned with the slots of the housing. 15. A hot runner nozzle assembly for an injection mold comprising: a. an elongated nozzle core having a longitudinal axis and opposite first and second ends and a nozzle core melt channel extending along the longitudinal axis, the nozzle core being made of a first metal alloy, b. a nozzle tip having first and second ends, the first end of the nozzle tip being mounted to the first end of the nozzle core, the nozzle tip having a nozzle tip melt channel, the nozzle tip being coaxially aligned with the nozzle core such that the nozzle tip melt channel and the nozzle core melt channels are aligned, the nozzle tip having a valve gate at the second end of the nozzle tip, the nozzle tip having a nozzle seal located immediately adjacent the second end of the nozzle tip, the nozzle tip being made of a second metal alloy, the second metal alloy having a greater heat conductivity than the first metal alloy, c. a nozzle core heating mantle for heating the nozzle core, d. the nozzle core having a connector portion formed on the second end, e. a hot runner manifold having a melt channel outlet, f. a nozzle housing mounted to the hot runner manifold adjacent the melt channel outlet, the nozzle housing and the connector portion configured to mount the nozzle core on the manifold with the nozzle core's melt channel in alignment with the melt channel outlet of the hot runner manifold. 16. A hot runner nozzle assembly as defined in claim 15 wherein the second alloy is an alloy of BeCu. 17. A hot runner nozzle assembly as defined in claim 15 wherein the first end has an opening dimensioned and configured to receive the nozzle tip. 18. A hot runner nozzle assembly as defined in claim 15 wherein the connector portion of the nozzle core and the housing and dimensioned and configured to form a quick connector. 19. A hot runner nozzle assembly as defined in claim 18 wherein the connector portion of the nozzle core forms a flange having a bulge and wherein the nozzle housing has a shoulder adjacent a slot, the slot of the housing dimensioned and configured to permit the bulge to pass thorough the slot when the bulge and the slot are aligned, the connector portion and the housing being further dimensioned and configured to permit the flange to rotate between a first position wherein the bulge of the flange and the slot of the housing are aligned and a second position wherein the bulge of the flange abuts against the shoulder of the housing preventing the nozzle core from being removed from the housing and further comprising a lock member for releasably locking the flange in its second position. 20. A hot runner nozzle assembly as defined in claim 19 wherein the lock member comprises a set screw and wherein the bulge of the flange and the shoulder of the housing have a passage for receiving the set screw.
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