Detection device

A double-capping detection device characterized in that

• on a production line of a product in which an opening of a container is sealed with a cap, wherein:
• said production line comprises a curling device comprising a transmission sensor including a transmitter and a receiver and a curling plate, which plate presses a side part of the cap capping to the container, and a sectional shape of which is constructed so as to gradually change from an upstream of the production line to a downstream thereof, in order that a skirt portion and a pull-tab of the cap are brought into contact with a surface of the container,
• the transmission sensor including the transmitter and the receiver is provided along a path on which the container moves, and is capable to emit an optical light from the transmitter to the receiver through a space being above the container in said path in order to detect a transmission in the space in a normal state, in which state a subsequent cap is not entrained by the cap at the time that the cap covers the container,
• the space is a space between the transmitter and the receiver and corresponds to a detection region of the sensor in which space an irradiation light is emitted from the transmitter to the receiver,
• the space is a space in which the cap cannot be present in the normal state, and
• the space is a space in which aluminum would be present in a case that the cap and the subsequent cap are pressed in close contact by the curling plate to the surface of the container, in this case a part of the subsequent cap is separated from the container surface and is turned over thereby and other part of the subsequent cap is contact with a surface of the container, and in this case the part of the subsequent cap being turned over moves through the space.

A double-capping detection device characterized in that

• on a production line of a product in which an opening of a container is sealed with a cap, wherein:
• said production line comprises a curling device comprising a proximity sensor, a transmission sensor including a transmitter and a receiver and a curling plate, which plate presses a side part of the cap capping to the container, and a sectional shape of which is constructed so as to gradually change from an upstream of the production line to an downstream thereof, in order that a skirt portion and a pull-tab of the cap are brought into contact with a surface of the container,
• said opening is formed in a mouth portion which is an uppermost part of the container and is formed in a conical trapezoid shape,
• in a lower area of said mouth portion, there is an area corresponding to a detection region of a proximity sensor to which the skirt portion and the pull-tab of the cap is not attached in a normal state, in which state a subsequent cap is not entrained by the cap at the time that the cap covers the container,
• the area corresponding to the detection region is in a surface of the container,
• the proximity sensor is provided along a path on which the container moves, wherein the proximity sensor is capable of detecting aluminum in the detection region,
• the area corresponding to the detection region is an area where aluminum would be present in the case that the cap and the subsequent cap are pressed in close contact with the surface of the container by the curling plate, said case is happened if the subsequent cap is entrained by the cap at the time that the cap covers the container,
• the transmission sensor including the transmitter and the receiver is provided along a path on which the container moves, and is capable to emit an optical light from the transmitter to the receiver through a space being above the container in said path in order to detect a transmission in the space in the normal state,
• the space is a space between the transmitter and the receiver, and corresponds to a detection region of the sensor in which space an irradiation light is emitted from the transmitter to the receiver,
• the space is a space in which the cap cannot be present in the normal state, and
• the space is a space in which aluminum would be present in a case that the cap and a the subsequent cap are pressed in close contact with the by the curling plate to the surface of the container, in this case a part of the subsequent cap is separated from the container surface and is turned over thereby and other part of the subsequent cap is contact with a surface of the container, and in this case the part of the subsequent cap being turned over moves through the space.