Disclosed, amongst other things, is: (i) a rotary injection molding machine; (ii) a mold; (iii) a mass-drive; and (iv) a method of a molding, amongst other things.
대표청구항▼
What is claimed is: 1. A rotary molding machine comprising: a frame; a table rotatably mounted to the frame; a first drive for rotation of the table relative to the frame; the table configured to receive a plurality of molds mounted in a circular array thereon; a hot runner mounted to the table con
What is claimed is: 1. A rotary molding machine comprising: a frame; a table rotatably mounted to the frame; a first drive for rotation of the table relative to the frame; the table configured to receive a plurality of molds mounted in a circular array thereon; a hot runner mounted to the table configured to connect the plurality of molds to an extruder; a mass-drive movably linked to the table for freedom of movement away from the center of rotation of the table; the mass-drive configured to drive a molding function responsive to a centrifugal force directed away from a center of rotation of the table. 2. The rotary molding machine according to claim 1 wherein: the mass-drive configured to perform the molding function of mold clamping. 3. The rotary molding machine according to claim 1, wherein: the mass-drive configured to perform the molding function of melt injection. 4. The rotary molding machine according to claim 1, wherein: the table includes: a plurality of first connecting structures mounted in a circular array thereon for mounting the plurality of molds to the table, at least in part. 5. The rotary molding machine according to claim 4, wherein: each of the first connecting structures configured to receive a core of the corresponding mold, the core configured to define an inner portion of a molding cavity. 6. The rotary molding machine according to claim 5, wherein: each of the first connecting structures configured to position the core between a molding orientation, registered between a pair of split cavities of the mold, and a de-molding orientation outside of the split cavities. 7. The rotary molding machine according to claim 6, wherein: each of the first connecting structure includes: a turret; a rotation structure for rotatably linking the turret to the table; the turret configured to receive the core. 8. The rotary molding machine according to claim 7, wherein: the turret configured to receive a plurality of cores. 9. The rotary molding machine according to claim 7, wherein: the rotation structure includes: a tower mounted on the table; a trunnion configured between the turret and a tower; a drive for rotating the turret. 10. The rotary molding machine according to claim 9, wherein: the rotation structure further includes a service coupling for supplying a service to the turret. 11. The rotary molding machine according to claim 7, wherein: at least one of the turret and the core includes: an ejection structure configured to eject a molded article from the core. 12. The rotary molding machine according to claim 11, wherein: the ejection structure includes: an annular piston slidably disposed within the turret; a collar configured to define an end portion of the molding cavity; the annular piston linked with the collar. 13. The rotary molding machine according to claim 11, wherein: the ejection structure includes: a pressurized fluid nozzle configured on the core. 14. The rotary molding machine according to claim 1, wherein: the table includes: a plurality of second connecting structures mounted in a circular array thereon for mounting the plurality of molds to the table, at least in part. 15. The rotary molding machine according to claim 14, wherein: each of the second connecting structures configured to receive a pair of split cavities of the corresponding mold, the pair of split cavities together defining an outer portion of the molding cavity. 16. The rotary molding machine according to claim 15, wherein: each of the second connecting structures configured to provide for a relative repositioning of the split cavities between a molding configuration and a clearance configuration. 17. The rotary molding machine according to claim 15, wherein: each of the second connecting structures includes: a positioning drive connected to the table; a pair of linkages configured to connect corresponding split cavities of the pair of split cavities to the positioning drive. 18. The rotary molding machine according to claim 15, wherein: the pair of split cavities configured to register with the core. 19. The rotary molding machine according to claim 15, wherein: the pair of split cavities configured to cooperate with a lock ring to lock the pair of split cavities together around the core. 20. The rotary molding machine according to claim 19, wherein: the split cavity and the lock ring include complementary tapers. 21. The rotary molding machine according to claim 1, wherein: the table includes: a plurality of third connecting structures mounted in a circular array thereon for mounting the plurality of molds to the table, at least in part. 22. The rotary molding machine according to claim 21, wherein: each of the third connecting structures configured to receive a lock ring of the corresponding mold. 23. The rotary molding machine according to claim 22, wherein: each of the third connecting structures configured to provide for a repositioning of the lock ring relative to a pair of spit cavities of the corresponding mold between a locked configuration and an un-locked configuration. 24. The rotary molding machine according to claim 23, wherein: the lock ring configured to cooperate with the pair of split cavities to lock the pair of split cavities together around a core. 25. The rotary molding machine according to claim 24, wherein: the lock ring and the split cavity include complementary tapers. 26. The rotary molding machine according to claim 22, wherein: each of the third connecting structures includes: a positioning drive connected to the table; a linkage configured to connect the lock ring to the positioning drive. 27. The rotary molding machine according to claim 24, wherein: the mass-drive provided by the lock ring and wherein the lock ring configured to clamp the pair of split cavities around the core. 28. The rotary molding machine according to claim 1, further including: an ejection structure for ejecting a molded article from the plurality of molds. 29. The rotary molding machine according to claim 1, wherein: the hot runner includes: a plurality of melt conduits arranged in a branched array; a sprue configured to connect in fluid communication with the melt conduits and the extruder; a plurality of shooting pots configured to connect in fluid communication with the melt conduits and with the plurality of molds; a heating structure for heating the melt conduits, the sprue, and the shooting pots. 30. The rotary molding machine according to claim 29, wherein: each of the plurality of shooting pot includes: an elongate tubular nozzle; a plunger slidably disposed within the nozzle; the nozzle defining an inlet connected to at least one of the melt conduits, and an outlet arranged in fluid communication with the corresponding mold. 31. The rotary molding machine according to claim 30, wherein: each shooting pot further includes: a check valve arranged between the melt conduit and the nozzle; the check valve oriented to allow one-way flow from the melt conduits to the nozzle. 32. The rotary molding machine according to claim 30, further including: a shooting pot actuation structure connected to the plunger for moving the plunger within the nozzle. 33. The rotary molding machine according to claim 32, wherein: an axis of the plunger aligned with a radius of the table; the shooting pot actuation structure includes: a head portion disposed at an end of the plunger; the mass-drive provided by the head portion and wherein the head portion configured to drive the molding function of melt injection. 34. The rotary molding machine according to claim 32, wherein: the shooting pot actuation structure includes: a cam plate rotatably mounted to the table; a second drive configured between the cam plate and the table for a relative oscillating rotation therebetween; the cam plate defines a plurality of cam tracks; a plurality of linkages slidably connected to the table for sliding movements along the longitudinal axis of the plungers; a portion of each linkage configured to engage with the cam track; a further portion of each linkage configured to connect with a head portion of the plunger; whereby a reciprocation of the plungers of the plurality of molds provided by the relative oscillating rotation between the cam plate and the table. 35. A mold for mounting on a rotatable table of a rotary molding machine, the mold comprising: complementary molding structures that cooperatively define a molding cavity within which a molded article may be formed; a mass-drive slidably mountable on the table with freedom of movement away from the center of rotation of the table; the mass-drive configured to drive a molding function responsive to a centrifugal force directed away from the center of rotation of the table. 36. The mold according to claim 35, wherein: the complementary molding structures includes: a core configured to define an inner portion of the molding cavity; and a pair of split cavities together defining an outer portion of the molding cavity; and the mold further includes: a lock ring configured to cooperate with the pair of split cavities to lock the pair of split cavities together around the core; the lock ring providing the mass-drive to clamp the pair of split cavities around the core. 37. The mold according to claim 35, further includes: a first connecting structure for mounting the mold, at least in part, to the table. 38. The mold according to claim 37, wherein: the first connecting structure configured to receive the core. 39. The mold according to claim 37, wherein: the first connecting structure includes: a turret; a rotation structure for rotatably linking the turret to the table; the turret configured to receive the core. 40. The mold according to claim 39, wherein: the turret configured to receive a plurality of cores. 41. The mold according to claim 40, wherein: the rotation structure includes: a tower mountable on the table; a trunnion configured between the turret and a tower; a drive for rotating the turret. 42. The mold according to claim 41, wherein: the rotation structure further includes a service coupling for supplying a service to the turret. 43. The mold according to claim 39, wherein: at least one of the turret and the core includes: an ejection structure configured to eject a molded article from the core. 44. The mold according to claim 43, wherein: the ejection structure includes: an annular piston slidably disposed within the turret; a collar configured to define an end portion of the molding cavity; the annular piston linked with the collar. 45. The mold according to claim 43, wherein: the ejection structure includes: a pressurized fluid nozzle configured on the core. 46. The mold according to claim 35, further including: a second connecting structure for mounting the mold, at least in part, to the table. 47. The mold according to claim 46, wherein: the second connecting structure configured to receive the pair of split cavities. 48. The mold according to claim 35, wherein: the second connecting structure configured to provide for a relative repositioning of the split cavities between a molding configuration and a clearance configuration. 49. The mold according to claim 46, wherein: the second connecting structure includes: a positioning drive connectable to the table; a pair of linkages configured to connect corresponding split cavities of the pair of split cavities to the positioning drive. 50. The mold according to claim 35, wherein: the split cavity and the lock ring include complementary tapers. 51. The mold according to claim 35, wherein: a third connecting structure for mounting the mold, at least in part, to the table. 52. The mold according to claim 51, wherein: the third connecting structure configured to receive the lock ring. 53. The mold according to claim 52, wherein: the third connecting structure configured to provide for a repositioning of the lock ring relative to the pair of spit cavities between a locked configuration and an un-locked configuration. 54. The mold according to claim 53, wherein: the third connecting structure includes: a positioning drive connectable to the table; a linkage configured to connect the lock ring to the positioning drive. 55. A mass-drive for a rotary molding machine, the mass-drive comprising: a body movably linked to a table of the rotary molding machine for freedom of movement away from a center of rotation of the table; the body configured to drive a molding function responsive to a centrifugal force directed away from the center of rotation of the table. 56. The mass-drive according to claim 55, wherein: the body configured to perform at least one of the molding function of: mold closing; mold clamping; melt injection; mold opening; molded article ejection. 57. The mass-drive according to claim 55, wherein: the body defines a lock ring and wherein the lock ring configured to clamp a molding structure including a pair of split cavities around a core. 58. The mass-drive according to claim 57, wherein: the lock ring configured to cooperate with a third connecting structure for linking the body to the table. 59. The mass-drive according to claim 58, wherein: the third connecting structure configured to provide for a repositioning of the lock ring relative to a pair of spit cavities of the corresponding mold between a locked configuration and an un-locked configuration. 60. The mass-drive according to claim 59, wherein: the lock ring and the split cavity include complementary tapers. 61. The mass-drive according to claim 55, wherein: the body defines a head portion of a plunger and wherein the plunger configured to cooperate with a nozzle of a shooting pot. 62. A method of molding a molded article with the rotary molding machine according to claim 1, the method comprising: rotating the table with the plurality of molds thereon; performing a first molding function of closing at least one of the plurality of molds; performing a second molding function of clamping at least one of the plurality of molds; performing a third molding function of injecting a melt into a molding cavity defined in at least one of the plurality of molds; performing a fourth molding function of opening of at least one of the plurality of molds; performing a fifth molding function of ejecting of a molded article from at least one of the plurality of molds; the performing of at least one of the molding functions is with a mass-drive responsive to a centrifugal force directed away from a center of rotation of the table. 63. The method of claim 62, further including: positioning a lock ring, of the mold, between a locked and an un-locked configuration. 64. The method of claim 63, further including: performing the molding function of clamping using the lock ring as the mass-drive. 65. The method of claim 62, further including: positioning a pair of split cavities, of the mold, between a molding configuration and a clearance configuration. 66. The method of claim 62, further including: swapping a pair of cores, of the mold, between a molding orientation and a de-molding orientation. 67. The method of claim 62, further including: retrieving of the ejected molded article with a post-molding device. 68. The method of claim 62, further including: rotating the table at a constant predefined angular velocity. 69. The method of claim 62, further including: rotating the table at a varying angular velocity. 70. The method of claim 69, further including: increasing the angular velocity of the table during melt injection and decreasing the angular velocity of the table during mold open. 71. The method of claim 62, further including: synchronizing operation of the plurality of molds. 72. The method of claim 62, further including: desynchronizing operation of the plurality of molds.
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이 특허에 인용된 특허 (8)
Black John W. (Hickory Corners MI) Shupe Richard D. (Kalamazoo MI) Simon Earl (Kalamazoo MI), Apparatus for injection molding.
De\ath Roderick M. (Wantage GBX) Fairchild ; deceased Brian (late of Haywards Heath GBX by Angela J. Fairchild ; personal representative) Flude Ian (Wantage GBX), Multi-cavity, co-injection molding apparatus.
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