US3707255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feed arrangement for strip stack
Assignee: Nidec Minster Corp
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Filing: 1971-01-13
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Granted: 1972-12-26
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Expires: 1991-01-13
Abstract
Abstract Feed arrangement for feeding strip stock, or the like, into a press in which the feeding mechanism for the stock comprises a drive roller which drives the stock and which also drives a signal producer, the signal from which is compared with another signal preset on a manually adjustable signal producer with the feed being automatically terminated when the two signals bear a certain relation to each other. The signals may be digital signals or analog signals.
Inventors
- 👤 Merrill L Ridgway
- 👤 Willard D Kaiser
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:42
CPC Classifications
B; B21; B21D; B21D43/00; B21D43/02; B21D43/021; Y; Y10; Y10T; Y10T83/00; Y10T83/444; Y10T83/4455; Y10T83/4539; Y10T83/4541; Y10T83/4587; Y10T83/4592
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
220 words
A feed arrangement for feeding strip stock into a machine, such as a press or the like and comprising: a frame, a pair of feed rolls in said frame between which said stock passes and adapted for feeding said stock, drive means adapted for driving at least one of said rolls in rotation in feed direction, means for actuating the other one of said feed rolls to frictionally engage said stock, a command input device including adjustable means presettable to a predetermined feed length and supplying a first signal in conformity with the setting of said adjustable means, a signal developing means operable during the feeding of stocK by said rolls to develop a second signal in conformity with the amount of rotation of said feed rolls, comparing means connected to receive and compare said first and second signals and adapted to supply a third signal as the feed rolls rotate an amount such that the peripheral movement thereof is substantially equal to said predetermined feed length, first control means operable when actuated to cause said drive means to drive and stop said feed rolls, said first control means when actuated energizing said actuating means and also energizing said drive means for forward rotation, and second control means to actuate said first control means thereby to initiate the feed cycle.
Claim 2
Dependent Claim
220 words
A feed arrangement for feeding strip stock into a machine, such as a press or the like and comprising: a frame, a pair of feed rolls in said frame between which said stock passes and adapted for feeding said stock, drive means adapted for driving at least one of said rolls in rotation in feed direction, means for actuating the other one of said feed rolls to frictionally engage said stock, a command input device including adjustable means presettable to a predetermined feed length and supplying a first signal in conformity with the setting of said adjustable means, a signal developing means operable during the feeding of stocK by said rolls to develop a second signal in conformity with the amount of rotation of said feed rolls, comparing means connected to receive and compare said first and second signals and adapted to supply a third signal as the feed rolls rotate an amount such that the peripheral movement thereof is substantially equal to said predetermined feed length, first control means operable when actuated to cause said drive means to drive and stop said feed rolls, said first control means when actuated energizing said actuating means and also energizing said drive means for forward rotation, and second control means to actuate said first control means thereby to initiate the feed cycle.
Claim 3
Dependent Claim
50 words
A feed arrangement according to claim 1 which includes actuator means operatively connected to said second control means and under the control of the machine into which the stock is fed for actuating said second control means when said machine is at a predetermined point in its cycle of operation.
Claim 4
Dependent Claim
32 words
A feed arrangement according to claim 2 in which said machine is a press and said actuator means including a limit switch adapted for actuation by a movable part of said press.
Claim 5
Dependent Claim
16 words
A feed arrangement according to claim 1 in which said drive means is a rotary motor.
Claim 6
Dependent Claim
144 words
A feed arrangement according to claim 4 in which said rollers are movable relatively toward each other to grip the stock and away from each other to release the stock, actuator means energizeable for moving said rollers toward each other to grip said stock prior to energization of said drive motor for a feed cycle, means for moving said rollers away from each other upon deenergization of said actuator means, said drive means comprising a reversible motor, said first control means when actuated energizing said actuator means and also energizing said drive motor for forward rotation, said signal developing means being driven by said drive motor, and said first control means being operable to energize said drive motor for reverse rotation upon separation of said rolls thereby to return said signal developing means to the condition thereof at the beginning of said feed cycle.
Claim 7
Dependent Claim
50 words
A feed arrangement according to claim 5 which includes actuating means operatively connected to said second control means and under the control of the machine into which the stock is fed for actuating said second control means when said machine is at a predetermined point in its cycle of operation.
Claim 8
Dependent Claim
52 words
A feed arrangement according to claim 6 which includes stock clamping means actuatable for engaging and clamping said stock against movement in the feed direction, and third control means being operable when actuated for actuating said clamping means so as to prevent movement of said stock after termination of a feed cycle.
Claim 9
Dependent Claim
56 words
A feed arrangement according to claim 7 in which said machine is a press, and support means supporting said frame adjacent said press for adjustment relative to the press in the direction of movement of the press slide so as to accommodate the feed arrangement to the heights of various die sets placed in the press.
Claim 10
Dependent Claim
128 words
A feed arrangement according to claim 8 in which said support means includes a support member fixed to the press, spaced links pivoted at their one ends to said member and at their other ends to said frame, expansible fluid cushion means at the bottom of the frame to support the frame on a supporting surface such as a floor, valve means on the frame connected to said fluid cushion means and having movable valve member means to control the supply of fluid to and from said fluid cushion means, lever means pivoted to the frame and to said valve member means, a slide adjustable on said support member, and link means connected at one end to the slide and at the other end to said lever means.
Claim 11
Dependent Claim
28 words
A feed arrangement according to claim 9 in which said links are parallel and the points of connection thereof with the press and with the frame are coaxial.
Claim 12
Dependent Claim
81 words
A feed arrangement according to claim 10 whIch includes screw threaded means connecting said slide to said support member and operable for adjusting said slide on said support member in the direction of movement of said valve member means in said valve means, cooperating elements of a scale and pointer on said support member and slide to show the position of the slide on the support member, and means for locking the slide to the support member in adjusted positions thereon.
Claim 13
Dependent Claim
34 words
A feed arrangement according to claim 11 which includes a said expansible fluid cushion, said valve mans comprising a valve for the cushion, said lever means including a lever connected to the valve member.
Claim 14
Dependent Claim
34 words
A feed arrangement according to claim 11 in which said frame includes a platform extending therefrom toward the working space in the press and at a level with the stock passing between the rollers.
Claim 15
Dependent Claim
39 words
A feed arrangement according to claim 7 in which said drive motor is hydraulically operable, control valve means connected in circuit with said drive motor, at least said first control means including means for shifting said control valve means.
Claim 16
Dependent Claim
104 words
A feed arrangement according to claim 1 in which one of said rolls is rotatable on a stationary axis in said frame, a pair of arms pivotally supported at their one ends in said frame and rotatably supporting the other of said rolls at their other ends, biasing means biasing said arms in a direction to move said other roll away from said one roll, and third control means including a fluid actuator means connected to said arms and operable to move the arms against the bias of said biasing means to move said other roll into stock gripping relation with said one roll.
Claim 17
Dependent Claim
30 words
A feed arrangement according to claim 1 in which said adjustable means comprises a digital element presettable to a predetermined count and said signal developing means comprises a pulse generator.
Claim 18
Dependent Claim
51 words
A feed arrangement according to claim 1 in which said adjustable means comprises a source of voltage presettable to a predetermined value and said signal developing means comprises resolver means adapted to supply a voltage which varies in conformity with the rotated position of said rolls during feeding of stock thereby.
Claim 19
Dependent Claim
17 words
A feed arrangement according to claim 17 in which said resolver means is a multiple speed resolver.
Claim 20
Dependent Claim
15 words
A feed arrangement according to claim 1 wherein the drive means is a hydraulic motor.
Claim 21
Dependent Claim
15 words
A feed arrangement according to claim 19 wherein said signal developing means is a resolver.
Claim 22
Dependent Claim
26 words
A feed arrangement according to claim 1 wherein the driven feed roll is brought to a common reference location for the starting of each feeding cycle.
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) | 1975-12-26 | 1976-06-26 | 1976-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-26 | 1980-06-26 | 1980-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-26 | 1984-06-26 | 1984-12-26 | $7700.00 | Window Closed / Lapsed |