Device for punching blanks out of a flat sheet
OwnerFranz Vosseninventor
Life of this patent
Estimating the term…
Abstract
A device for punching blanks out of a flat sheet, in particular packaging blanks consisting of cardboard or corrugated cardboard, using a punching tool that is mounted in a carrier plate and projects beyond the plate in the form of a blade or cutting line, in addition to profiled strips, consisting of a material of limited flexibility, which flank the tool. A rail-type profiled channel consisting of a rigid material is located on the carrier plate, running parallel to the punching tool on each side of the longitudinal faces of the latter and one cross-sectional area of the profiled strip is inserted into the profiled channel in a positive fit. In addition, at least one lateral face of the cross-section of the profiled strip has a protuberant base.
Claims18
A device for punching blanks from flat sheet comprising:
- a carrier plate having a bottom surface;
- a tool having longitudinal sides, the tool being mounted in the carrier plate and having a cutting edge which projects beyond the bottom surface of the carrier plate, the tool extending in a direction from the carrier plate to the cutting edge;
- a pair of channel profiles, each fixed to the carrier plate on one longitudinal side of the tool;
- a strip of flexible material mounted in each channel profile, wherein each strip projects away from the bottom surface of the carrier plate beyond the cutting edge of the tool when the tool is in a non-working position;
- wherein each channel profile has a base fixed to the carrier plate and two legs extending away from the base in the direction of the tool, wherein each leg is provided with an inner undercut space, wherein the inner undercut space of the legs are curved inwards in cross section;
- wherein each strip of flexible material has two side surfaces, wherein at least one side surface of the strip has an outwardly directed base bead and a ridge, wherein the tool is flanked on both sides by the base bead on the strips, and wherein the ridge engages with the inner undercut space.
A device for punching blanks from flat sheet comprising:
- a carrier plate having a bottom surface;
- a tool having two longitudinal sides, the tool being mounted in the carrier plate and having a cutting edge which projects beyond the bottom surface of the carrier plate, the tool extending in a direction from the carrier plate to the cutting edge;
- a pair of channel profiles, each fixed to the carrier plate on one longitudinal side of the tool;
- a strip of flexible material mounted in each channel profile, wherein each strip projects away from the bottom surface of the carrier plate beyond the cutting edge of the tool when the tool is in a non-working position;
- wherein each channel profile has a base fixed to the carrier plate and two legs extending away from the base in the direction of the tool, wherein the strip has two side surfaces inclining inwards towards a profile center line (M) so as to define a large base and a small base;
- wherein the center line (M) of the strip is a line of symmetry thereof and extends in the direction of the tool;
- and
- wherein the legs have hook bars at their ends, said hook bars pointing towards one another, wherein the large base of the strip has two ridges engaging with the hook bars.
Dependencies are inferred from the claim text.