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US 9,352,524 B2Granted
Stamping machine comprising a platen press
AssigneeBobst Mex SA
InventorChristophe De Gaillande
Life of this patent
Estimating the term…
Abstract
A stamping machine includes a platen press which has a fixed platen and an opposing moving platen effecting a reciprocating movement imparted by articulated members forming toggle joints. Each articulated member forming a toggle joint including a connecting member which collaborates with a respective cam borne by a camshaft.
Claims6
A stamping machine for stamping a stamping strip on a support in sheet form comprising:
- a platen press comprising a fixed platen and a moving platen opposing each other, the moving platen effecting a reciprocating movement perpendicular to the plane of the platens when the platens are stamping, to provide a period of contact between the platens, wherein a stamping force between said platens is substantially constant throughout said period of contact;
- at least two articulated members forming toggle joints for imparting the reciprocating movement to the moving platen;
- and
- a rotatable camshaft bearing at least one cam per articulated member which forms one of the toggle joints, each articulated member forming a toggle joint comprising a connecting member collaborating with one of the cams borne by the camshaft, by the cam having a cam surface shaped for moving the collaborating articulated member to reciprocate the moving platen;
- wherein each cam comprises a sector having a radius substantially equal to the maximum radius of the cam, and
- wherein the sector extends at least 25° around the cam.
3 more elements
A stamping machine for stamping a stamping strip on a support in sheet form comprising:
- a platen press comprising a fixed platen and a moving platen opposing each other, the moving platen effecting a reciprocating movement perpendicular to the plane of the platens when the platens are stamping;
- at least two articulated members forming toggle joints for imparting the reciprocating movement to the moving platen;
- and
- a rotatable camshaft bearing at least one cam per articulated member which forms one of the toggle joints, each articulated member forming a toggle joint comprising a connecting member collaborating with one of the cams borne by the camshaft, by the cam having a cam surface shaped for moving the collaborating articulated member to reciprocate the moving platen;
- wherein each cam comprises a sector having a radius substantially equal to the maximum radius of the cam,
- wherein the sector extends at least 25° around the cam;
- and
- wherein said reciprocating movement is vertical and moves the moving platen to lie flush with the surface of the fixed platen.
5 more elements
Dependencies are inferred from the claim text.