US3869237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mold assembly
Assignee: Continental Can Co Inc
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Filing: 1972-12-20
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Granted: 1975-03-04
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Expires: 1992-12-20
Abstract
Abstract This disclosure relates to a molding machine for molding hollow articles, such as bottles, which are provided with an opening therein. The molds of the machine are modified so that each has incorporated therein a cutter which is operable after a member has been blown therein to cut off the parison material at one end and to form the desired opening in the member. The cutter is automatically actuated by means of a cam as the mold passes a predetermined position in its path of travel. Further, the cam is resiliently mounted so as to absorb shock and to prevent jamming of the mold structure in the event of blockage of the actuation of the cutter. The resiliently mounted cam has associated therewith switch means for shutting down the machine upon predetermined excessive movement of the cam.
Inventors
- 👤 Ernest W Hellmer
- 👤 John P Kinsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:47
CPC Classifications
B; B29; B29C; B29C49/00; B29C49/42; B29C49/48; B29C49/50; Y; Y10; Y10S; Y10S83/00; Y10S83/914
Claims Analysis
Total Claims: 27
Claim 1
Independent Claim
47 words
A mold cavity having generally radially moveable means for blow molding a hollow member having a tubular end portion including a transverse shoulder, and axially moveable cutter means for trimming the hollow member at the transverse shoulder thereof while the hollow member is still in said mold.
Claim 2
Dependent Claim
47 words
A mold cavity having generally radially moveable means for blow molding a hollow member having a tubular end portion including a transverse shoulder, and axially moveable cutter means for trimming the hollow member at the transverse shoulder thereof while the hollow member is still in said mold.
Claim 3
Dependent Claim
23 words
The mold of claim 1 wherein said mold is of the type for receiving a length of extruded tubing for molding the same.
Claim 4
Dependent Claim
37 words
The mold of claim 1 wherein said mold is of the type for receiving a length of extruded tubing for molding the same, and said cutter means are of a split construction for receiving therein the tubing.
Claim 5
Dependent Claim
47 words
The mold of claim 1 wherein said mold is of the type for receiving a length of extruded tubing for molding the same, and pinch-off means at opposite ends of said cavity means for sealing the length of extruded tubing during blow forming of a hollow member.
Claim 6
Dependent Claim
30 words
The mold of claim 4 wherein said cutter means are disposed intermediate that portion of said cavity means which defines a hollow member transverse shoulder and the adjacent pinch-off means.
Claim 7
Dependent Claim
19 words
The mold of claim 5 wherein said cutter means are of a split construction for receiving therein said tubing.
Claim 8
Dependent Claim
32 words
The mold of claim 1 wherein said cutter means includes an annular knife, and means for moving said knife axially to sever the molded hollow member transverse shoulder along a circular line.
Claim 9
Dependent Claim
19 words
The mold of claim 1 wherein said cutter means are of a type operable while said mold is closed.
Claim 10
Dependent Claim
160 words
A mold having cavity means for blow molding a hollow member having a tubular end portion including a transverse shoulder, cutter means for trimming a hollow member at the transverse shoulder thereof while the hollow member is still in said mold said mold being of the type for receiving a length of extruded tubing for molding the same, and pinch-off means at opposite ends of said cavity means for sealing the length of extruded tubing during blow forming of a hollow member, said mold including mold halves defining said cavity means, separate support means mounted on said mold halves adjacent that portion of said cavity means which defines a hollow member transverse shoulder for movement axially thereof, one of said pinch-off means being carried by said separate support means, said cutter means being carried by said separate support means for axial movement therewith, and means for moving said separate support means towards said mold halves to operate said cutter means.
Claim 11
Dependent Claim
160 words
A mold having cavity means for blow molding a hollow member having a tubular end portion including a transverse shoulder, cutter means for trimming a hollow member at the transverse shoulder thereof while the hollow member is still in said mold said mold being of the type for receiving a length of extruded tubing for molding the same, and pinch-off means at opposite ends of said cavity means for sealing the length of extruded tubing during blow forming of a hollow member, said mold including mold halves defining said cavity means, separate support means mounted on said mold halves adjacent that portion of said cavity means which defines a hollow member transverse shoulder for movement axially thereof, one of said pinch-off means being carried by said separate support means, said cutter means being carried by said separate support means for axial movement therewith, and means for moving said separate support means towards said mold halves to operate said cutter means.
Claim 12
Dependent Claim
28 words
The mold of claim 9 wherein said separate support means are formed of two halves each carried by a respective mold half for opening and closing movement therewith.
Claim 13
Dependent Claim
50 words
The mold of claim 9 wherein said separate support means are formed of two halves each carried by a respective mold half for opening and closing movement therewith, and cutter means are formed in two halves each carried by a respective separate support means half for receiving therein the tubing.
Claim 14
Dependent Claim
43 words
The mold of claim 11 wherein said cutter means are in the form of a sleeve extending axially from said separate support and having an end portion projecting into between said mold halves, said cutter means forming a continuation of said cavity means.
Claim 15
Dependent Claim
23 words
The mold of claim 9 wherein said mold includes a blow needle, and said blow needle is carried by said separate support means.
Claim 16
Dependent Claim
23 words
The mold of claim 9 wherein separate knock-out means are carried by one of said mold halves and by said separate support means.
Claim 17
Dependent Claim
26 words
The mold of claim 9 wherein said means for moving said separate support means include linkage means between said mold halves and said separate support means.
Claim 18
Dependent Claim
36 words
The mold of claim 9 wherein said means for moving said separate support means include linkage means between said mold halves and said separate support means, said linkage being of the cam actuated force multiplying type.
Claim 19
Dependent Claim
44 words
The mold of claim 1 wherein said cavity means incluDes means for temporary interlocking engagement with a hollow member being molded to temporarily retain the hollow member within the cavity means after the actuation of said cutter means and the opening of said mold.
Claim 20
Dependent Claim
47 words
The mold of claim 1 wherein said cavity means is a configuration to define a neck finish on a hollow member being molded, and said cavity means includes minute projections engageable in interlocking relation with the neck finish to temporarily retain a hollow member within said mold.
Claim 21
Dependent Claim
115 words
A molding machine comprising a frame, a plurality of molds mounted within said frame for movement about a closed path, each mold including mold halves mounted for movement between open and closed positions, as they move along said closed path, an extruder for extruding a hollow tube for reception in said molds, each mold having pinch-off means for removing and sealing a tubing portion, each mold having radially moveable means for blow molding each sealed tubular portion, and axially moveable cutter means for severing from a hollow member molded within each mold an adjacent pinched-off tube portion and defining an entrance opening into the molded member while the molded member is still in the mold.
Claim 22
Dependent Claim
115 words
A molding machine comprising a frame, a plurality of molds mounted within said frame for movement about a closed path, each mold including mold halves mounted for movement between open and closed positions, as they move along said closed path, an extruder for extruding a hollow tube for reception in said molds, each mold having pinch-off means for removing and sealing a tubing portion, each mold having radially moveable means for blow molding each sealed tubular portion, and axially moveable cutter means for severing from a hollow member molded within each mold an adjacent pinched-off tube portion and defining an entrance opening into the molded member while the molded member is still in the mold.
Claim 23
Dependent Claim
21 words
The molding machine of claim 19 wherein said cutter means is of the type operable while the respective mold is closed.
Claim 24
Dependent Claim
38 words
The molding machine of claim 19 wherein said cutter means are in the form of a separate cutter carried by each mold, and actuating means for actuating each cutter as it passes a predetermined point along said path.
Claim 25
Dependent Claim
30 words
The molding machine of claim 21 wherein said actuating means includes a cam, and mounting means resiliently mounting said cam for movement when actuation of said cutter is unduly resisted.
Claim 26
Dependent Claim
28 words
The molding machine of claim 22 wherein switch means are associated with said cam for stopping the operation of said molding machine when said cam movement is excessive.
Claim 27
Dependent Claim
28 words
The molding machine of claim 22 wherein said mounting means includes guide means carried by said frame, and means for adjustably positioning said cam along said guide means.
References Cited (Backward Citations)
US3224038A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-03 | 1978-09-02 | 1979-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-03 | 1982-09-02 | 1983-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-03 | 1986-09-02 | 1987-03-04 | $7700.00 | Window Closed / Lapsed |