Sealing station for a packaging machine
AssigneeMultivac Sepp HaggenmüLler SE & Co. KG
InventorsElmar Ehrmann, Herbert Kirmse
Life of this patent
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Abstract
A sealing station for a packaging machine comprises a sealing tool for sealing packages, an underpressure source for evacuating packages in the sealing station, and an overpressure source for providing compressed air so as to press the sealing tool against a package. A single drive is provided for the underpressure source and the overpressure source, the underpressure source and/or the overpressure source being a pump that is configured as a rotary vane pump or as a helical pump.
Claims12
A sealing station for a packaging machine, the sealing station comprising:
- an outer wall;
- a sealing plate for sealing packages, said sealing plate disposed interior of said outer wall;
- a pressure chamber between said sealing plate and said outer wall;
- an underpressure source for evacuating a package in the sealing station, the underpressure source comprising a first pump;
- an overpressure source for providing compressed air into said pressure chamber so as to press the sealing plate against a package in the sealing station, the overpressure source comprising a second pump, said first pump and said second pump separated by a distance;
- and
- a single drive comprising a drive motor and a drive shaft rotated by said drive motor, said drive shaft having a length, and wherein said first pump is operably connected to said drive shaft at a first location along the length and said second pump is operably connected to said drive shaft at a second location along the length such that said first pump and said second pump are both driven by said drive shaft.
A sealing station for a packaging machine, the sealing station comprising:
- a sealing plate for sealing packages;
- an underpressure source for evacuating a package in the sealing station;
- an overpressure source for providing compressed air so as to press the sealing plate against a package;
- and
- a single drive shaft disposed for rotation to drive the underpressure source and the overpressure source, and one of the underpressure source or the overpressure source comprising a pump configured as a rotary vane pump or as a helical pump, wherein the single drive shaft drives the pump;
- wherein the pump has an intake opening and the sealing station further comprises a three-way valve provided upstream of the intake opening of the pump;
- wherein the three-way valve has a first port in fluid communication with ambient air;
- wherein the three-way valve has a second port in fluid communication with a chamber of the sealing station or with an underpressure reservoir of the sealing station;
- and
- wherein the three-way valve has a third port in fluid communication with the intake opening of the pump.
Dependencies are inferred from the claim text.