Packaging machine with mechanisms for positioning its former
First Claim
1. A packaging machine comprising:
- a roll supporting device with a support shaft rotatably supporting a film roll which extends in an axial direction, an elongated bag-forming film being wrapped around said film roll;
a bag forming device which pulls out said film from said film roll and forms said film into a shape of a bag; and
a packaging device for filling said bag-shaped film with articles to be packaged and sealing said film to produce a package;
said bag forming device including a former for bending said film into a tubular form, a former roller for guiding said film in a film transportation direction to said former, and a former roller displacing mechanism, said former being selected from a plurality of formers with different sizes, said former roller displacing mechanism serving to move said former roller to a former roller position according to the size of said selected former along said film transportation direction, said former roller displacing mechanism including a first mechanism for supporting said former roller and moving said former roller to a plurality of different positions with respect thereto in said film transportation direction and a second mechanism for moving said first mechanism to a plurality of different positions in said film transportation direction.
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Accused Products
Abstract
A packaging machine has a roll supporting device with a support shaft rotatably supporting a film roll which extends in an axial direction, an elongated bag-forming film being wrapped around the film roll, a bag forming device which pulls out the film from the film roll and forms the film into a shape of a bag, a packaging device for filling the bag-shaped film with articles to be packaged and sealing the film to produce a package, a roll displacing mechanism for displacing the roll supporting device in the axial direction, and a roll position controller for controlling the roll displacing mechanism to adjust the position of the roll supporting device. The bag forming device includes a former for bending the film into a tubular form and a former roller for guiding the film to the former. As a former of a different size is installed, depending on the width of the film, the position of the former roller is changed by a former roller discharging mechanism which includes a first mechanism for supporting the former roller and moving it to a plurality of different positions with respect itself and a second mechanism for moving the first mechanism to a plurality of different positions in the same direction.
30 Citations
6 Claims
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1. A packaging machine comprising:
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a roll supporting device with a support shaft rotatably supporting a film roll which extends in an axial direction, an elongated bag-forming film being wrapped around said film roll; a bag forming device which pulls out said film from said film roll and forms said film into a shape of a bag; and a packaging device for filling said bag-shaped film with articles to be packaged and sealing said film to produce a package; said bag forming device including a former for bending said film into a tubular form, a former roller for guiding said film in a film transportation direction to said former, and a former roller displacing mechanism, said former being selected from a plurality of formers with different sizes, said former roller displacing mechanism serving to move said former roller to a former roller position according to the size of said selected former along said film transportation direction, said former roller displacing mechanism including a first mechanism for supporting said former roller and moving said former roller to a plurality of different positions with respect thereto in said film transportation direction and a second mechanism for moving said first mechanism to a plurality of different positions in said film transportation direction. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification