Patent US3865020A successfully refreshed from Google Patents.
US3865020A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device to selectively control the expellers of automatic machines to punch cardboard sheets or the like
Assignee: Officina Meccanica Erba and C SAS
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Filing: 1973-05-18
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Granted: 1975-02-11
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Expires: 1993-05-18
Abstract
Abstract The device is designed for application in punching machines to sever and to remove scraps or waste material from the punched cardboard sheet. The device comprises a toothed clutch member 62, 64 inserted between the driving shaft 66 of the punching machine and a driven shaft 52, whereby a first cam 56 is keyed to said driven shaft. Said first cam is designed to control the pierced table 22 of the punching machine on which the punched sheet is arranged, whereas a second cam 102 is integral with the first cam and actuates a shaft 95 connected by means of a counter-lever 104 with a guiderail 93 to a support 40-42 to retain the punching tools 20 and 22, provided with springed expellers 26, said tools and the springed expeller means being arranged on a corresponding table, operated with the desired synchronism with respect to the other parts of the punching machine, to remove and expel the scraps from the punched sheet.
Inventors
- 👤 Giancarlo Erba
- 👤 Busto Arsizio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:00
CPC Classifications
B; B21; B21D; B21D45/00; B21D45/003
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
346 words
An apparatus for ejecting cut-out portions of a sheet, comprising: ejector frame means having a plurality of first ejecting elements projecting therefrom; table means disposed opposite said frame means and coacting therewith for permitting said ejecting members to remove the cut-out portions from said sheet, said table means including a first support device and a table fixed to said support device, said table being adaptable to have said sheet deposited thereon and also having a plurality of openings therein which cooperate with the first ejecting elements for permitting removal of said cut-out portions; a second support device movably mounted relative to said first support device and a plurality of second ejecting elements mounted on said second support device and disposed on the side of said table opposite said frame means, said second ejecting element being disposed directly opposite at least some of the first ejecting elements whereby the sheet when supported on said table is positionable therebetween; drive means for causing relative movement of said table means toward and away from said frame means so that said first ejecting elements remove said cut-out portions when said frame means and table means are moved relatively toward one another, said drive means including aligned driving and driven members and first linkage means drivingly connected between said driven member and one of said first support device and said frame means; said drive means further including first disengageable clutch means coacting between said driving and driven members for permitting said driven member to be drivingly coupled to said driving member only when said members are in a selected angular relationship with one another, thereby insuring the necessary synchronism of the various parts of the apparatus; and said drive means still further including second linkage means drivIngly connected between said driven member and said second support device for causing movement of said second ejecting elements toward and away from said first ejecting elements, said second linkage means including second disengageable clutch means for permitting deactivation of the second support device and the second ejecting elements independently of said first ejecting elements.
Claim 2
Independent Claim
346 words
An apparatus for ejecting cut-out portions of a sheet, comprising: ejector frame means having a plurality of first ejecting elements projecting therefrom; table means disposed opposite said frame means and coacting therewith for permitting said ejecting members to remove the cut-out portions from said sheet, said table means including a first support device and a table fixed to said support device, said table being adaptable to have said sheet deposited thereon and also having a plurality of openings therein which cooperate with the first ejecting elements for permitting removal of said cut-out portions; a second support device movably mounted relative to said first support device and a plurality of second ejecting elements mounted on said second support device and disposed on the side of said table opposite said frame means, said second ejecting element being disposed directly opposite at least some of the first ejecting elements whereby the sheet when supported on said table is positionable therebetween; drive means for causing relative movement of said table means toward and away from said frame means so that said first ejecting elements remove said cut-out portions when said frame means and table means are moved relatively toward one another, said drive means including aligned driving and driven members and first linkage means drivingly connected between said driven member and one of said first support device and said frame means; said drive means further including first disengageable clutch means coacting between said driving and driven members for permitting said driven member to be drivingly coupled to said driving member only when said members are in a selected angular relationship with one another, thereby insuring the necessary synchronism of the various parts of the apparatus; and said drive means still further including second linkage means drivIngly connected between said driven member and said second support device for causing movement of said second ejecting elements toward and away from said first ejecting elements, said second linkage means including second disengageable clutch means for permitting deactivation of the second support device and the second ejecting elements independently of said first ejecting elements.
Claim 3
Dependent Claim
43 words
An apparatus according to claim 1, wherein said first linkage means is drivingly coupled to said first support device and includes a plurality of spaced crank mechanisms for causing said first support device and the table mounted thereon to undergo an oscillating motion.
Claim 4
Dependent Claim
33 words
An apparatus according to claim 2, whereby said second linkage means includes a second plurality of crank mechanisms drivingly connected to said second support device for causing same to undergo an oscillating motion.
Claim 5
Dependent Claim
97 words
An apparatus according to claim 1, wherein said first linkage means includes a first cam nonrotatably coupled to said driven member and first lever means having first follower means engaged with said first cam for causing oscillation of said first lever means in response to rotation of said first cam, and said second linkage means including a second cam nonrotatably coupled to said driven member and second lever means having second follower means associated therewith and engageable with said second cam for causing oscillation of said second lever means in response to rotation of said second cam.
Claim 6
Dependent Claim
57 words
An apparatus according to claim 4, wherein said second linkage means includes third swingable lever means positioned adjacent said second lever means, said first and second lever means each being swingable about a common pivot axis, and said second clutch means coacting between said second and third lever means for permitting same to be drivingly coupled together.
Claim 7
Dependent Claim
38 words
An apparatus according to claim 5, wherein said second linkage means includes intermediate lever means pivotally connected between said third lever means and said second support device, said intermediate lever means being fulcrumed on said first support device.
Claim 8
Dependent Claim
101 words
An apparatus according to claim 1, wherein said first linkage means causes said first support device, when said first clutch means is engaged, to be moved toward said frame means from a first operative but disengaged position into a second engaged position wherein said first ejecting elements project into the openings formed in said table, and auxiliary driving means coacting with said first linkage means for selectively permitting said first support device to be moved away from said frame means into a third inactive position which it is spaced on the other side of said second position from said first position.
Claim 9
Dependent Claim
64 words
An apparatus according to claim 7, wherein said first linkage means includes a rotatable cam which is nonrotatably coupled to said driven member, and said auxiliary driving means including a fluid pressure cylinder drivingly coupled to said cam for shifting same axially to cause a corresponding movement of said first linkage means and of said first support device between said first and third positions.
Claim 10
Dependent Claim
143 words
An apparatus according to claim 1, wherein said first linkage means includes a pair of first crank mechanisms drivingly coupled to said first support device and each including a first crank having a pair of arms, each crank being pivotally mounted relative to a stationary base of the machine and having one arm thereof pivotally coupled to said first support device, said first cranks being disposed with the pivot axes thereof parallel but transversely spaced from one another, and a connecting rod extending between and pivotally coupled to the other arm of said first cranks for causing said first cranks to move synchronously with one another, said first linkage means also including first cam means drivingly coupled to said driven member and coacting with one of said first cranks for causing angular oscillation thereof in response to rotation of said first cam means.
Claim 11
Dependent Claim
150 words
An apparatus according to claim 1, wherein said second linkage means includes a pair of crank mechanisms pivotally connected to said second support device, said crank mechanisms each including a first crank pivotally fulcrumed on said first support device and having a first arm portion pivotally connected to said second support device, said first cranks being disposed with the pivot axes thereof parallel but transversely spaced from one another, each of said crank mechanisms including a second pivotally supported crank which is pivotally connected to a second arm of a respective one of the first cranks, an elongated connecting rod extending between said second cranks for causing synchronous movement thereof, and intermediate link means connected between one of said second cranks and said driven member, said intermediate link means including a cam nonrotatably coupled to said driven member and said second clutch means being associated with said intermediate link means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |