Corrugated insert cutting apparatus and method
OwnerManfred Lenkner, Andreas Lauginventors
Life of this patent
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Abstract
An insert cutting apparatus useable in a production line for producing tubes from shaped sheet-metal strips includes an upper die having a first row of punches, and a lower die having a second row of punches. The first and second rows of punches can form predetermined breaking points in at least one of the shaped sheet-metal strips, and the first and second rows of punches can alternate, so that two punches of the first row of punches have a punch of the second row of punches therebetween.
Claims21
-9. (canceled)
A device useable as part of a production line for producing tubes from shaped sheet-metal strips, the device comprising:
- an upper die having a first row of punches;
- and
- a lower die having a second row of punches;
- wherein the first and second rows of punches form predetermined breaking points in at least one of the shaped sheet-metal strips, and
- wherein a punch of the second row of punches engages between two punches of the first row of punches.
A production line for producing tubes from a first shaped endless sheet-metal strip, and a second shaped endless sheet-metal strip, the production line comprising:
- a first device including
- an upper die having a first row of punches;
- and
- a lower die having a second row of punches;
- wherein the first and second rows of punches form predetermined breaking points in the first shaped sheet-metal strip, and
- wherein a punch of the second row of punches engages between two punches of the first row of punches;
- a second device positioned at a common location along the production line with the first device, the second device operable to form predetermined breaking points in the second shaped endless sheet-metal strip;
- a first section upstream of the first device and the second device, the first section operable to shape the first and second shaped endless sheet-metal strips;
- and
- a second section downstream of the first device and the second device, the second section operable to combine the first and second shaped endless sheet-metal strips,
- wherein the first device and the second device work simultaneously to form the predetermined breaking points.
A device useable as part of a production line for producing tubes from shaped sheet-metal strips, the device comprising:
- an upper die having a first wave shape;
- and
- a lower die having a second wave shape,
- wherein at least one of the shaped sheet-metal strips has a transverse corrugation substantially matching the first wave shape and the second wave shape, and
- wherein the upper die and the lower die produce predetermined breaking points in at least one of the shaped sheet-metal strips in the transverse corrugation without the corrugation being damaged.
A method for producing tubes on a production line having rolls, the method comprising:
- shaping sheet-metal strips;
- combining the sheet-metal strips to form a tube;
- after shaping and combining, forming predetermined breaking points in the tube by contacting a first side of the tube with at least two punches from a first row of punches and contacting a second side of the tube with at least one punch from a second row of punches, wherein the at least two punches of the first row of punches have the at least one punch from the second row of punches therebetween.
Dependencies are inferred from the claim text.