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US 9,409,304 B2Granted
Cutting unit for a packaging machine
AssigneeMultivac Sepp Haggenmueller SE & Co. KG
InventorsRobert Maier, Elmar Ehrmann
Life of this patent
Estimating the term…
Abstract
A cutting unit for a packaging machine comprises a cutting knife which is movably guided in a linear guide, and a drive for driving the movement of the cutting knife. The cutting unit further includes a curved push rod that is provided between the drive and the cutting knife.
Claims14
A cutting unit for a packaging machine, the cutting unit comprising:
- a movable cutting knife, said cutting knife disposed on a transverse member;
- a linear guide associated with the cutting knife, said transverse member being in operable engagement with said linear guide for guiding the cutting knife and the transverse member in a linear manner, wherein the linear guide comprises a first lateral guide, a second lateral guide, and said transverse member extending between the lateral guides;
- a drive for driving the movement of the cutting knife;
- and
- a U-shaped push rod disposed between and pivotally coupled to the drive and the transverse member, the push rod being curved substantially along its entire length;
- at least one crank shaft coupled to the drive;
- a first end of the push rod pivotally coupled to the transverse member at a first swivel joint and a second end of the push rod pivotally coupled to the at least one crank shaft at a second swivel joint;
- and
- wherein the drive has an output shaft drivingly engaged with the at least one crank shaft.
6 more elements
A cutting unit for a packaging machine, the cutting unit comprising:
- a movable cutting knife;
- first and second lateral guides;
- a transverse member extending between the first and second lateral guides and the cutting knife being disposed on said transverse member, said transverse member being in operable engagement with said first and second lateral guides for guiding the cutting knife and the transverse member in a linear manner;
- a drive for driving the movement of the cutting knife;
- a crank shaft having first and second ends, the second end of the crank shaft being operably connected to the drive;
- and
- a U-shaped push rod having first and second ends defining a length and said push rod is curved substantially along the length, wherein the first end of the push rod is pivotally coupled to the transverse member at a first swivel joint and the second end of the push rod is pivotally coupled to the first end of the crank shaft at a second swivel joint;
- wherein a linear movement of said cutting knife results from a rotation of said crank shaft, wherein said crank shaft rotates about an axis of rotation, and wherein a line normal to said axis of rotation and passing through said first swivel joint is substantially parallel to a direction of the linear movement of said cutting knife.
5 more elements
A cutting unit for a packaging machine, the cutting unit comprising:
- a movable cutting knife;
- first and second lateral guides;
- a transverse member extending between the first and second lateral guides and the cutting knife being disposed on said transverse member, said transverse member being in operable engagement with said first and second lateral guides for guiding the cutting knife and the transverse member in a linear manner;
- a drive for driving the movement of the cutting knife;
- a crank shaft having first and second ends, the second end of the crank shaft being operably connected to the drive;
- and
- a U-shaped push rod having first and second ends defining a length and said push rod is curved substantially along the length, wherein the first end of the push rod is pivotally coupled to the transverse member at a first swivel joint and the second end of the push rod is pivotally coupled to the first end of the crank shaft at a second swivel joint;
- wherein the cutting knife moves in a linear manner from a lowered position to a raised position upon a rotation of said crankshaft about an axis of rotation, wherein when said cutting knife is in said lowered position, said first swivel joint, said second swivel joint and said axis of rotation are in vertical alignment.
5 more elements
Dependencies are inferred from the claim text.