Method and apparatus for sensing a seal on a film
AssigneeCMD Corporation
InventorsFrancis J. Binder, Kenneth C. Radtke, Gaylord G. Guilette
Life of this patent
Estimating the term…
Abstract
A method and apparatus for detecting seals on a film from which bags are formed includes a force transmitter and a force sensor. The force transmitter transmits a force from the film to the sensor. The force sensor receives the transmitted force and provides a force signal. A controller receives the force signal and provides a seal signal. The the force sensor may be an mechanical sensor, an acoustic sensor, a mechanical sensor, a vibration sensor or a piezoelectric sensor.
Claims48
An apparatus for detecting a seal on a film, comprising;
- a force transmitter, disposed to transmit a force from the film;
- a force sensor disposed to receive the transmitted force and provide a force signal in response thereto;
- and
- a controller, disposed to receive the force signal and provide a seal signal in response thereto.
The apparatus of claim 10, wherein the quill includes a radius surface abutting the film path, and the quill is held against the film path by a spring force.
A method for detecting a seal on a film, comprising;
- providing a force signal responsive to the seal;
- and
- detecting the force and providing a seal signal in response thereto.
An apparatus for detecting a seal on a film, comprising;
- means for providing a force signal in response to the seal;
- means for detecting the force signal, coupled to the means for providing a force signal;
- and
- means for providing a seal signal in response to the force signal, coupled to the means for detecting.
A bag machine, comprising;
- a force transmitter, disposed to transmit a force responsive to a seal;
- a force sensor disposed to-receive the transmitted force and provide a force signal in response thereto;
- at least one upstream processing device, located upstream of the force transmitter;
- at least one downstream processing device, located downstream of the force transmitter;
- and
- a controller, disposed to receive the force signal and provide a seal signal in response thereto.
A method for processing a bag, comprising;
- transporting the film from a first processing device to a seal sensing location;
- providing a force signal responsive to the seal at the seal sensing location;
- detecting the force and providing a seal signal in response thereto;
- transporting the film to a second processing device.
Dependencies are inferred from the claim text.