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US3839935A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blank punching apparatus
Assignee: AMADA Ltd
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Filing: 1973-01-15
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Granted: 1974-10-08
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Expires: 1993-01-15
Abstract
Abstract A turret-type punch press is provided with a blank collection and side ejection mechanism to segregate blanks, i.e., the finished products, from slugs, i.e., waste products. The blanks are pushed from out beneath the die by a reciprocable pusher and ejected into a discharge chute. A hollow cylinder supporting the lower turret at the punching station is provided with an opening of a diameter large enough to accommodate the largest slug to be punched but the opening is considerably smaller than the blanks to be cut and thus minimizes the area that the lower turret is unsupported.
Inventors
- 👤 D Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:40
CPC Classifications
B; B21; B21D; B21D28/00; B21D28/02; B21D28/12; B21D45/00; B21D45/003; Y; Y10; Y10T; Y10T83/00; Y10T83/202; Y10T83/2074; Y10T83/2081; Y10T83/2092; Y10T83/22; Y10T83/2205; Y10T83/2209; Y10T83/2216; Y10T83/869; Y10T83/8727; Y10T83/8732
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
128 words
Apparatus for punching large product blanks at a punching station in a turret-type punch press comprising a frame, an upper rotatable turret on the frame having a plurality of tools, one of which is a product blanking punch, positionable at said punching station, a lower rotatable turret on the frame having a plurality of dies corresponding to said punches and positionable at said punching station, means on said frame at said punching station for supporting the lower turret and for receiving scrap slugs punched from said worksheet by said tools, and means independent of said scrap slug receiving means for removing product blanks punched through said blanking die without the product blanks passing to said scrap slug receiving means for segregating the product blanks from the scrap slugs.
Claim 2
Dependent Claim
128 words
Apparatus for punching large product blanks at a punching station in a turret-type punch press comprising a frame, an upper rotatable turret on the frame having a plurality of tools, one of which is a product blanking punch, positionable at said punching station, a lower rotatable turret on the frame having a plurality of dies corresponding to said punches and positionable at said punching station, means on said frame at said punching station for supporting the lower turret and for receiving scrap slugs punched from said worksheet by said tools, and means independent of said scrap slug receiving means for removing product blanks punched through said blanking die without the product blanks passing to said scrap slug receiving means for segregating the product blanks from the scrap slugs.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1, said product blank removing means including ejector means for pushing the product blanks radially outwardly of the turret.
Claim 4
Dependent Claim
30 words
The apparatus of claim 2, said product blank removing means including a discharge chute for receiving the ejected product blanks and carrying the product blanks away from the lower turret.
Claim 5
Dependent Claim
49 words
The apparatus of claim 2, said ejector means including a pneumatic ram, a slider connected to said ram and having lower guide surfaces, guide tracks on said lower turret engageable by said guide surfaces for guiding said slider against said product blanks and out from beneath said lower turret.
Claim 6
Dependent Claim
59 words
The apparatus of claim 1, said lower turret supporting means including a scrap slug discharge opening for receiving said scrap slugs, said product blanking die having an opening for cutting the product blanks, said scrap slug discharge opening being considerably smaller than said die opening whereby the unsupported span of the lower turret overlying said slug opening is minimized.
Claim 7
Dependent Claim
113 words
Apparatus for punching product blanks at a punching station in a turret-type punch press comprising a frame, an upper rotatable turret on the frame having a plurality of tools, one of which is a product blanking punch, positionable at said punching station, a lower rotatable turret on the frame having a plurality of dies corresponding to said punches and positionable at said punching station, scrap slug collecting means, means on said frame at said punching station for supporting the lower turret and for passing the scrap slugs punched from said worksheet by said tools to said scrap slug collecting means, and means for collecting product blanks independent of said scrap slug collecting means.
Claim 8
Dependent Claim
113 words
Apparatus for punching product blanks at a punching station in a turret-type punch press comprising a frame, an upper rotatable turret on the frame having a plurality of tools, one of which is a product blanking punch, positionable at said punching station, a lower rotatable turret on the frame having a plurality of dies corresponding to said punches and positionable at said punching station, scrap slug collecting means, means on said frame at said punching station for supporting the lower turret and for passing the scrap slugs punched from said worksheet by said tools to said scrap slug collecting means, and means for collecting product blanks independent of said scrap slug collecting 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) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |