US3861260A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Double bucket die cutting assembly
Assignee: PRESTON ACQUISITION Inc A DE CORP
•
Filing: 1973-11-16
•
Granted: 1975-01-21
•
Expires: 1993-11-16
Abstract
Abstract A double bucket die cutting assembly is provided which is particularly adaped to be installed at the die cutting station of a press for purposes primarily of accomplishing a punching operation thereat upon a moving web of material passing thereby. The double bucket die cutting assembly includes a frame structure in which a pair of buckets are mounted for eccentric rotation about a drive axis in suitably spaced relation relative to each other whereby to permit the material, upon which it is desired to perform a punching operation, to be passed therebetween. One of the buckets is provided with punch means suitably supported thereon so as to lie in a common plane extending the length of the major axis thereof. The other of the buckets is provided with receiving means operable to permit the punch means to be received therein as the punch means is brought into juxtaposed relation therewith during the rotation of the pair of buckets. The frame structure further includes counterbalancing means comprising a pair of weighted rollers which are supported in the frame structure for rotation relative thereto. Each of the rollers is provided with an irregular distribution of the weight thereof about its axis of rotation so that the heavy portion of the weighted rollers will be disposed to the opposite side of the center line from the buckets thereby providing a counterbalancing force to the weight of the buckets during the rotation of the latter. Alignment means are provided cooperatively associated with each of the pair of buckets so as to ensure that proper alignment between the pair of buckets is maintained during the rotation thereof. The frame structure also serves as a support for a drive means which is operable to drive each of the pair of buckets and each of the pair of weighted rollers so that they rotate in a predetermined fashion whereby to ensure that the pair of weighted rollers accomplish their intended counterbalancing function relative to the pair of buckets.
Inventors
- 👤 Martin Kesten
- 👤 Richard L Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:41
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/028; B26; B26D; B26D1/00; B26D1/56; B26D1/565; Y; Y10; Y10T; Y10T74/00; Y10T74/21; Y10T74/2173; Y10T74/2183; Y10T74/2184; Y10T83/00; Y10T83/465; Y10T83/4766; Y10T83/4783; Y10T83/4786; Y10T83/869; Y10T83/8719
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
304 words
A double bucket die cutting assembly, operable to perform a work operation on a length of material, comprising: a. frame means including a pair of frame members; b. bucket means mounted on said pair of frame members including first and second buckets having cooperating work performing means supported thereon, said bucket means also including first and second support means rotatably mounted on said frame and having the ends of said buckets eccentrically supported thereon for movement of said buckets to and from a closely spaced work performing position in which said work performing means cooperate to perform a work operation on a length of material passing therebetween, said work performing position of said buckets defining a work station; c. counterbalancing means movably muonted on said pair of frame members operable to counterbalance the weight of said first and second buckets, said counterbalancing means including first and second rollers extending transversely between said frame members in spaced relation to said first and second buckets and on opposite sides of the plane defining said work station, and support means rotatably mounting said rollers on said frame for rotation about an axis substantially in the same plane as the axes of rotation of said buckets, said rollers having the weight thereof unequally distributed about their axes of rotation; and d. drive means supported on said pair of frame members and operatively connected to said bucket means and said counterbalancing means for driving said first and second buckets to and from said work performing position and for moving said counterbalancing means in a predetermined manner to relative to said first and second buckets to cause said counterbalancing means to produce a firce effective to counterbalance the force produced by the weight of said first and second buckets during the movement thereof to and from said work performing position.
Claim 2
Dependent Claim
304 words
A double bucket die cutting assembly, operable to perform a work operation on a length of material, comprising: a. frame means including a pair of frame members; b. bucket means mounted on said pair of frame members including first and second buckets having cooperating work performing means supported thereon, said bucket means also including first and second support means rotatably mounted on said frame and having the ends of said buckets eccentrically supported thereon for movement of said buckets to and from a closely spaced work performing position in which said work performing means cooperate to perform a work operation on a length of material passing therebetween, said work performing position of said buckets defining a work station; c. counterbalancing means movably muonted on said pair of frame members operable to counterbalance the weight of said first and second buckets, said counterbalancing means including first and second rollers extending transversely between said frame members in spaced relation to said first and second buckets and on opposite sides of the plane defining said work station, and support means rotatably mounting said rollers on said frame for rotation about an axis substantially in the same plane as the axes of rotation of said buckets, said rollers having the weight thereof unequally distributed about their axes of rotation; and d. drive means supported on said pair of frame members and operatively connected to said bucket means and said counterbalancing means for driving said first and second buckets to and from said work performing position and for moving said counterbalancing means in a predetermined manner to relative to said first and second buckets to cause said counterbalancing means to produce a firce effective to counterbalance the force produced by the weight of said first and second buckets during the movement thereof to and from said work performing position.
Claim 3
Dependent Claim
48 words
The double bucKet die cutting assembly as set forth in claim 1 further comprising alignment means supported on said bucket means including a pair of pins interconnecting said first and second buckets operable for maintaining the proper alignment between said first and second buckets during the movement thereof.
Claim 4
Dependent Claim
63 words
The double bucket die cutting assembly as set gorth in claim 1 wherein said drive means includes a first set of gears interconnecting one end of each of said first and second buckets and said first and second rollers, and a second set of gears interconnecting the other end of each of said first and second buckets and said first and second rollers.
Claim 5
Dependent Claim
41 words
The double bucket die cutting assembly as set forth in claim 3 further comprising override clutch means supported on said frame means operatively connected toi said drive means to permit said drive means to slip during a malfunction of the assembly.
Claim 6
Dependent Claim
29 words
The double bucket die cutting assembly as set forth in claim 1 wherein said first and second rollers each comprise a shaft having a cylindrical element eccentrically supported thereon.
Claim 7
Dependent Claim
339 words
A double bucket die cutting assembly, operable to perform a punching operation on a continuous web of material, comprising: a. frame means including a pair of frame members; b. bucket means including first and second buckets and first and second support means rotatably mounted on said frame and having said first and second buckets supported eccentrically thereon to permit said first and second buckets to undergo both linear and rotational motion in moving to and from a closely spaced work performing position, said first and second buckets having cooperating work performing means supported thereon operable to perform a punching operation on a continuous web of material passing therebetween when said first and second buckets are at said work performing position defining a work station; c. counterbalancing means movably mounted on said frame means including first and second rollers extending transversely between said frame members and support means rotatably mounting said first and secoind rollers on said frame means on opposite sides of the plane defining said work station in spaced relation to said first and secoind buckets, said support means rotatably mounting said rollers for rotation about axes substantially in the same plane as the axes of said rotation of said buckets, said rollers having the weight thereof unequally distributed about their axes of rotation, the orientation of the heavier weight portion of the rollers relative to the cooperating buckets being adjusted and operable to counterbalance the weight of said first and second buckets during the rotation thereof; and d. drive means supported on said pair of frame members and operatively connected to said bucket means and said counterbalancing means for driving said first and second buckets to and from said work performing position and for moving said first and second weighted rollers in a predetermined manner relative to said first and second buckets to cause said counterbalancing means to produce a force effective to counterbalance the force produced by the weight of said first and second buckets during the movement thereof to and from said work performing position.
Claim 8
Dependent Claim
339 words
A double bucket die cutting assembly, operable to perform a punching operation on a continuous web of material, comprising: a. frame means including a pair of frame members; b. bucket means including first and second buckets and first and second support means rotatably mounted on said frame and having said first and second buckets supported eccentrically thereon to permit said first and second buckets to undergo both linear and rotational motion in moving to and from a closely spaced work performing position, said first and second buckets having cooperating work performing means supported thereon operable to perform a punching operation on a continuous web of material passing therebetween when said first and second buckets are at said work performing position defining a work station; c. counterbalancing means movably mounted on said frame means including first and second rollers extending transversely between said frame members and support means rotatably mounting said first and secoind rollers on said frame means on opposite sides of the plane defining said work station in spaced relation to said first and secoind buckets, said support means rotatably mounting said rollers for rotation about axes substantially in the same plane as the axes of said rotation of said buckets, said rollers having the weight thereof unequally distributed about their axes of rotation, the orientation of the heavier weight portion of the rollers relative to the cooperating buckets being adjusted and operable to counterbalance the weight of said first and second buckets during the rotation thereof; and d. drive means supported on said pair of frame members and operatively connected to said bucket means and said counterbalancing means for driving said first and second buckets to and from said work performing position and for moving said first and second weighted rollers in a predetermined manner relative to said first and second buckets to cause said counterbalancing means to produce a force effective to counterbalance the force produced by the weight of said first and second buckets during the movement thereof to and from said work performing position.
Claim 9
Dependent Claim
29 words
The double bucket die cutting assembly as set forth in claim 6 wherein said first and second rollers each comprise a shaft having a cylindrical element eccentrically supported thereon.
Claim 10
Dependent Claim
48 words
the double bucket die cutting assembly as set forth in claim 6 further comprising alignment means supported on said bucket means including a pair of pins interconnecting said first and second buckets operable for maintaining the proper alignment between said first and second buckets during the movement thereof.
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) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |