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US 12,691,654 B2Granted
Retention device for retaining a blank, movement unit and process for moving said blank
AssigneeG.D S.p.A.
InventorsSalvatore Carboni, Antonio Vitali
Life of this patent
Estimating the term…
Abstract
A retention device for retaining blanks includes: a support, a first gripping portion secured to the support and provided with first retention elements of a blank, a second gripping portion secured to the support or to the first gripping portion and provided with second retention elements of the blank, and a movement mechanism for the second gripping portion with respect to the first gripping portion. The movement mechanism is configured to perform a pure rotation of the second gripping portion about a virtual rotation axis defined outside the retention device.
Claims16
A retention device for retaining blanks, comprising:
- a support,
- a first gripping portion secured to said support, the first gripping portion comprising first retention elements of a blank,
- a second gripping portion secured to said support or to said first gripping portion, the second gripping portion comprising second retention elements of said blank, and
- a movement mechanism for said second gripping portion with respect to said first gripping portion, said movement mechanism being configured to perform a pure rotation of said second gripping portion about a virtual rotation axis defined outside said retention device,
- wherein said movement mechanism comprises an articulated parallelogram secured to said first gripping portion and to said second gripping portion,
- wherein said articulated parallelogram comprises:
- a first rod secured by a first hinge to a first rotation point of said first gripping portion,
- a second rod secured by a second hinge to a second rotation point of said first gripping portion,
- a third rod comprising:
- a first pin rotatably secured to said first rod, a second pin rotatably secured to said second rod, and a third pin rotatably secured to a third rotation point of said second gripping portion,
- a fourth rod comprising:
- a fourth pin rotatably secured to said first rod, a fifth pin rotatably secured to said second rod, and a third pin rotatably secured to a fourth rotation point of said second gripping portion,
- wherein:
- said first and second rotation points and said virtual rotation axis are aligned with each other;
- and
- said third and fourth rotation points and said virtual rotation axis (V) being aligned with each other,
- in such a manner that, when said first and second rods rotate with respect to said first and second rotation points with a same angle, said third and fourth rods follow a translational movement with respect to said first gripping portion while maintaining a mutual parallelism condition, thereby varying an angular orientation of said second gripping portion with respect to said first gripping portion by rotating about said virtual rotation axis.
14 more elements
Dependencies are inferred from the claim text.