Patent US3841141A successfully refreshed from Google Patents.
US3841141A
Expired / Lapsed
US
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Die changing apparatus
Assignee: Individual
•
Filing: 1973-07-09
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Granted: 1974-10-15
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Expires: 1993-07-09
Abstract
Abstract A die changing apparatus includes a vertically adjustable die support member carrying a horizontally reciprocable die moving member, an adjustably mounted die pulling and pushing member is carried on the moving member, a first hydraulic motor actuates the die moving member and a second hydraulic motor vertically adjusts the die support member, the die support member may be carried by an above-the-floor support or may be carried by a below-the-floor support so that it may be retracted below the level of the floor. Portable hydraulic supply and control means can be connected to the motors for operation of the same.
Inventors
- 👤 S Rachwal
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:28
CPC Classifications
B; B21; B21D; B21D37/00; B21D37/14; Y; Y10; Y10S; Y10S100/00; Y10S100/918; Y10T; Y10T483/00; Y10T483/17; Y10T483/1729
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
140 words
Apparatus for removing dies from a vertical press having a bed for receiving the dies, comprising support means, a die support member carried by the support means and vertically adjustable relative thereto, and having a die carrying upper surface therein, means for vertically moving said die support member relative to the support means whereby the die carrying upper surface can be vertically aligned with the bed of the press, a die moving member mounted on said support member for reciprocating movement, means for reciprocating said die moving member and push and pull means carried by said die moving member adapted to be connected by a tension member to a die in the press whereby the die can be pulled by said die puller onto said die supporting surface, or to directly contact the die to push it onto the press.
Claim 2
Dependent Claim
140 words
Apparatus for removing dies from a vertical press having a bed for receiving the dies, comprising support means, a die support member carried by the support means and vertically adjustable relative thereto, and having a die carrying upper surface therein, means for vertically moving said die support member relative to the support means whereby the die carrying upper surface can be vertically aligned with the bed of the press, a die moving member mounted on said support member for reciprocating movement, means for reciprocating said die moving member and push and pull means carried by said die moving member adapted to be connected by a tension member to a die in the press whereby the die can be pulled by said die puller onto said die supporting surface, or to directly contact the die to push it onto the press.
Claim 3
Dependent Claim
20 words
The apparatus of claim 1 wherein a pair of support means are provided each having a die supporting member therein.
Claim 4
Dependent Claim
18 words
The apparatus of claim 1 wherein said means for reciprocating said die moving member constitutes a hydraulic ram.
Claim 5
Dependent Claim
78 words
The aparatus of claim 1 wherein said means for vertically moving said die support member relative to said support means comprises a pair of vertically disposed support columns carried by said support means and guided for vertical movement, a pair of worm gears engaging gear teeth on said support columns and motor means to rotate said worm gears in unison whereby said columns and die support member are vertically moved up and down relative to the support means.
Claim 6
Dependent Claim
22 words
The apparatus of claim 4 wherein said motor comprises a hydraulic motor operated and controlled from a remote source of hydraulic fluid.
Claim 7
Dependent Claim
78 words
The apparatus of claim 1 wherein said push and pull means carried by said die moving member is adjustably attached to the die moving member at a plurality of points, whereby a die may be pulled onto or pushed off of the die supporting surface through a succession of reciprocating movements of the die moving member, each with the push and pull means attached to the die moving member at a point further or closer to the press.
Claim 8
Dependent Claim
45 words
The apparatus of claim 6 wherein said means for reciprocating said die moving member constitutes a hydraulic ram having a given stroke and whereby a die may be pulled onto the die supporting surface a distance greater than said stroke by said succession of strokes.
Claim 9
Dependent Claim
27 words
The apparatus of claim 1 wherein said push and pull means carries a hook member and said tension means constitutes a chain member connectable to a die.
Claim 10
Dependent Claim
64 words
The apparatus of claim 1 wherein said support means is located below the floor level of the press and wherein said support member normally rests below said floor level and is raised by said means for vertically moving the support to a point above the floor and at a level whereby said die supporting surface is in the same plane as the press bed.
Claim 11
Dependent Claim
125 words
A die changing apparatus for removing a die from the bed of a press including a die support member having a die supporting surface adapted to slidably receive and support the die, a die pulling member mounted on said member for reciprocation relative thereto, hydraulic ram means connecting said support member and die pulling member for reciprocating said pulling member back and forth a first predetermined distance relative to the die supporting member, die pulling means, means for attaching said die pulling means on said die pulling member at a plurality of longitudinally spaced points whereby said die pulling means and a die connected thereto can be moved a total distance equal to the first predetermined distance plus the distance between said longitudinally spaced points.
Claim 12
Dependent Claim
125 words
A die changing apparatus for removing a die from the bed of a press including a die support member having a die supporting surface adapted to slidably receive and support the die, a die pulling member mounted on said member for reciprocation relative thereto, hydraulic ram means connecting said support member and die pulling member for reciprocating said pulling member back and forth a first predetermined distance relative to the die supporting member, die pulling means, means for attaching said die pulling means on said die pulling member at a plurality of longitudinally spaced points whereby said die pulling means and a die connected thereto can be moved a total distance equal to the first predetermined distance plus the distance between said longitudinally spaced points.
Claim 13
Dependent Claim
38 words
The apparatus of claim 10 wherein said die support member is carried on a support frame and can be vertically adjusted relative thereto so as to permit planer alignment of the die supporting surface with the die bed.
Claim 14
Dependent Claim
19 words
The apparatus of claim 11 wherein second hydraulic operated means are provided to vertically adjust the die support member.
Claim 15
Dependent Claim
29 words
The apparatus of claim 12 wherein a remote source of hydraulic fluid under pressure is provided to selectively actuate the hydraulic ram means and the second hydraulic operated means.
Claim 16
Dependent Claim
63 words
The apparatus of claim 13 wherein a second combination of die supporting frame, supporting member, die pulling member and die pulling means and hydraulic operating means is located parallel to the first combination of such elements and wherein said remote source of hydraulic fluid under pressure is connected to simultaneously reciprocably actuate both die pulling means and vertically actuate said die supporting members.
Claim 17
Dependent Claim
35 words
The apparatus of claim 10 wherein said die pulling means has a surface adapted to contact a die on the die supporting surface to push the same off of the surface onto a press bed.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-14 | 1978-04-15 | 1978-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-14 | 1982-04-15 | 1982-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-14 | 1986-04-15 | 1986-10-15 | $7700.00 | Window Closed / Lapsed |