Injection blow molding system with enhanced parison mold configuration
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B29C-049/06
B29C-049/30
B29C-045/17
B29C-045/32
B29C-049/48
B29C-033/30
B29C-049/64
B29C-049/78
출원번호
US-0057667
(2013-10-18)
등록번호
US-9132581
(2015-09-15)
발명자
/ 주소
Fields, Randal L.
Wardlow, Bruce A.
Brunson, David A.
Lefebure, Brian R.
Baldwin, James R.
출원인 / 주소
R&D Tools & Engineering Co.
대리인 / 주소
Hovey Williams LLP
인용정보
피인용 횟수 :
0인용 특허 :
18
초록▼
An injection blow molding (IBM) system and method for forming a plurality of parisons and molded articles. The IBM system includes an injection station having upper and lower die sets and a plurality of upper and lower mold half blocks each attached to a respective die set. Each of the upper mold ha
An injection blow molding (IBM) system and method for forming a plurality of parisons and molded articles. The IBM system includes an injection station having upper and lower die sets and a plurality of upper and lower mold half blocks each attached to a respective die set. Each of the upper mold half blocks has a corresponding lower mold half block with which it cooperatively defines one or more cavities for forming the exterior shape of the body of one or more of the parisons. The individual, independent attachment of the mold half blocks to the die sets allows easy individual replacement of faulty or worn mold blocks. Further, such an independent attachment configuration also permits the mold half blocks of each die set to be spaced from one another, so as to reduce thermal expansion problems and ease dimensional tolerances required for the width of the mold half blocks.
대표청구항▼
1. A split parison mold assembly configured for connection to upper and lower die sets of an injection blow molding system, said split parison mold assembly comprising: a plurality of pairs of upper and lower multi-cavity parison mold half blocks,wherein each pair of said mold half blocks is configu
1. A split parison mold assembly configured for connection to upper and lower die sets of an injection blow molding system, said split parison mold assembly comprising: a plurality of pairs of upper and lower multi-cavity parison mold half blocks,wherein each pair of said mold half blocks is configured to cooperatively define a plurality of parison forming cavities,wherein at least two adjacent lower multi-cavity mold half blocks are spaced apart from one another,wherein at least two adjacent upper multi-cavity mold half blocks are spaced apart from one another. 2. A split parison mold assembly as claimed in claim 1, wherein each of said upper and lower mold half blocks defines at least one heat transfer channel extending therethrough. 3. A split parison mold assembly as claimed in claim 2, further comprising at least one flexible lower seal disposed in the space between said at least two adjacent lower multi-cavity mold half blocks,further comprising at least one flexible upper seal disposed in the space between said at least two adjacent upper multi-cavity mold half blocks. 4. A split parison mold assembly as claimed in claim 3, wherein said lower seals provide fluid flow communication between said heat transfer channels of said at least two adjacent lower multi-cavity mold half blocks,wherein said upper seals provide fluid flow communication between said heat transfer channels of said at least two adjacent upper multi-cavity mold half blocks. 5. A split parison mold assembly as claimed in claim 3, wherein said lower and upper seals are O-ring seals. 6. A split parison mold assembly as claimed in claim 1, wherein at least one of said lower multi-cavity mold half blocks is configured for independent connection to said lower die set by one or more vertically-extending lower fasteners,wherein at least one of said upper multi-cavity mold half blocks is configured for independent connection to said upper die set by one or more vertically extending upper fasteners. 7. A split parison mold assembly as claimed in claim 1, wherein each of said upper and lower mold half blocks includes a plurality of vertically-extending bores configured to receive vertically-extending die set fasteners. 8. A split parison mold assembly as claimed in claim 7, wherein said vertically-extending bores include a plurality of threaded bores for receiving threaded bolts and a plurality of unthreaded bores for receiving unthreaded dowels. 9. A split parison mold assembly as claimed in claim 8, wherein each of said upper and lower mold half blocks comprises four of said threaded bores and two of said unthreaded bores. 10. A split parison mold assembly as claimed in claim 1, further comprising two or more pairs of upper and lower single-cavity mold half blocks,wherein each pair of upper and lower single-cavity mold half blocks cooperatively defines one parison cavity. 11. A split parison mold assembly as claimed in claim 10, wherein all of said upper multi-cavity mold half blocks are positioned between two of said upper single-cavity mold half blocks,wherein all of said lower multi-cavity mold half blocks are positioned between two of said lower single-cavity mold half blocks. 12. A split parison mold assembly as claimed in claim 11, wherein said upper multi-cavity mold half blocks include two outer upper multi-cavity mold half blocks each positioned adjacent one of said upper single-cavity mold half blocks,wherein said lower multi-cavity mold half blocks include two outer lower multi-cavity mold half blocks each positioned adjacent one of said lower single-cavity mold half blocks,further comprising a plurality of horizontally-extending fasteners for coupling each of said outer multi-cavity mold half blocks to respective adjacent single-cavity mold half blocks. 13. A split parison mold assembly as claimed in claim 12, further comprising a plurality of upper and lower end plates, each coupled to one of said single-cavity mold halves via one or more of said horizontally-extending fasteners. 14. A split parison mold assembly as claimed in claim 13, further comprising at least one heat transfer fluid connection coupled to each end plate. 15. A split parison mold assembly as claimed in claim 11, wherein said upper multi-cavity mold half blocks include two outer upper multi-cavity mold half blocks each positioned adjacent one of said upper single-cavity mold half blocks,wherein said lower multi-cavity mold half blocks include two outer lower multi-cavity mold half blocks each positioned adjacent one of said lower single-cavity mold half blocks,each of said single-cavity mold half blocks being spaced from the next adjacent outer multi-cavity mold half block. 16. A split parison mold assembly as claimed in claim 15, further comprising a plurality of upper and lower end plates, each coupled to one of said single-cavity mold halves via one or more horizontally-extending fasteners. 17. A split parison mold assembly as claimed in claim 16, further comprising at least one heat transfer fluid connection coupled to each end plate. 18. A split parison mold assembly as claimed in claim 1, wherein each pair of said mold half blocks is configured to cooperatively define at least 2 and not more than 10 parison forming cavities. 19. A split parison mold assembly as claimed in claim 1, wherein said split parison mold comprises at least 2 and not more than 40 pair of said upper and lower mold half blocks. 20. A split parison mold assembly as claimed in claim 1, wherein said split parison mold comprises at least 10 and not more than 100 parison forming cavities. 21. A split parison mold assembly as claimed in claim 1, wherein said at least two adjacent lower multi-cavity mold half blocks are spaced from one another by a distance of at least 0.001 inch and not more than 0.5 inch,wherein said at least two adjacent upper multi-cavity mold have blocks are spaced from one another by a distance of at least 0.001 inch and not more than 0.5 inch. 22. A split parison mold assembly as claimed in claim 1, wherein no heat transfer channels are located in said die sets. 23. A split parison mold assembly configured for connection to upper and lower die sets of an injection blow molding system, said split parison mold assembly comprising: a plurality of pairs of upper and lower multi-cavity parison mold half blocks,wherein each pair of said mold half blocks are configured to cooperatively define a plurality of parison forming cavities,wherein at least two of said lower multi-cavity mold half blocks are configured for independent connection to said lower die set by one or more vertically extending lower fasteners,wherein at least two of said upper multi-cavity mold half blocks are configured for independent connection to said upper die set by one or more vertically extending upper fasteners. 24. An injection blow molding process comprising: (a) injection molding a resin into a plurality of parisons at an injection station, wherein said injection molding includes— (i) shifting upper and lower die sets of said injection molding station from an open position to a closed position,(ii) injecting said resin into a plurality of parison cavities cooperatively defined by upper and lower mold half assemblies coupled to said upper and lower die sets respectively, wherein said upper mold half assembly comprises a plurality of upper mold half blocks independently coupled to said upper die, wherein said lower mold half assembly comprises a plurality of lower mold half blocks independently coupled to said lower die set, wherein at least one of said upper mold half blocks has a corresponding lower mold half block for cooperatively defining the exterior shape of the bodies of at least two of said parisons;(b) transferring said parisons from said injection station to a blowing station; and(c) blow molding said parisons into molded articles at said blowing station. 25. Tooling for use at the injection station of an injection molding machine for molding a resin into parisons, said tooling comprising: an upper die set and a lower die set adapted to be shifted between an open position and a closed position when said die sets are coupled with an injection blow molding machine; anda plurality of upper mold half blocks for said upper die set and a plurality of lower mold half blocks for said lower die set,said upper die set and said upper mold half blocks being configured for independent coupling of each of said upper mold half blocks to said upper die set,said lower die set and said lower mold half blocks being configured for independent coupling of each of said lower mold half blocks to said lower die set,at least certain of said upper mold half blocks and corresponding lower mold half blocks comprising multi-cavity mold half blocks. 26. Tooling as claimed in claim 25, wherein all of said upper and lower mold half blocks comprise multi-cavity mold half blocks. 27. Tooling as claimed in claim 25, wherein upper mold half blocks at opposite ends of the plurality of upper mold half blocks comprise single-cavity mold half blocks,wherein lower mold half blocks at opposite ends of the plurality of lower mold half blocks comprise single-cavity mold half blocks. 28. Tooling as claimed in claim 25, wherein each of said upper mold half blocks is provided with at least one vertically extending upper fastener for attaching each upper mold half block to said upper die set,wherein each of said lower mold half blocks is provided with at least one vertically extending lower fastener for attaching each lower mold half block to said lower die set. 29. Tooling as claimed in claim 25, wherein said upper mold half blocks are configured to be spaced apart from one another when said upper mold half blocks are coupled to said upper die set,wherein said lower mold half blocks are configured to be spaced apart from one another when said lower mold half blocks are coupled to said lower die set. 30. Tooling as claimed in claim 29, wherein each of said upper and lower mold half blocks defines at least one heat transfer channel extending therethrough. 31. Tooling as claimed in claim 30, further comprising a flexible lower seal adapted to be disposed in the space between each pair of adjacent lower mold half blocks for providing fluid communication between the heat transfer channels of each pair of adjacent lower mold half blocks,further comprising a flexible upper seal adapted to be disposed in the space between each pair of adjacent upper mold half blocks for providing fluid communication between the heat transfer channels of each pair of adjacent upper mold half blocks. 32. Tooling as claimed in claim 31, further comprising a pair of upper end plates at opposite ends of said plurality of upper mold half blocks and a pair of lower end plates at opposite ends of said plurality of lower mold half blocks,each of said upper and lower end plates being coupled to the next adjacent mold half block via at least one horizontally extending fastener. 33. Tooling as claimed in claim 32, further comprising at least one heat transfer fluid connection coupled to each end plate. 34. Tooling as claimed in claim 25, wherein each of said upper and lower die sets is provided with at least one heat transfer channel extending therethrough. 35. Tooling as claimed in claim 34, wherein each of said upper and lower mold half blocks is provided with at least one heat transfer channel extending therethrough. 36. Tooling as claimed in claim 25, wherein each of said upper and lower mold half blocks is provided with at least one heat transfer channel extending therethrough.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (18)
Ninneman Lawrence D. (Toledo OH), Apparatus for forming tubular plastic articles.
Hillman Michael J. (Ocean City NJ) Jacoby Bruce E. (Vineland NJ) Barbosa Rui M. (Millville NJ 4), Graphical interface driven injection blow molding apparatus.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.