Adhesive bonding and miscellaneous chemical manufacture – Surface bonding means and/or assembly means therefor – With bending – folding – winding – or wrapping means
Patent
1995-03-17
1997-04-08
Yeung, George
Adhesive bonding and miscellaneous chemical manufacture
Surface bonding means and/or assembly means therefor
With bending, folding, winding, or wrapping means
53583, 156475, 156 52, 156579, B65B 5100
Patent
active
056183763
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND AND SUMMARY
The invention relates to a device for girding an article with a strip of adhesive tape, whereof ends can adhere to one another, which device comprises: with: of the first tape; and the article has passed over the said means, bounding identical, substantially radial recesses disposed at mutually equal angular distances, front wall and the rear wall respectively of the housing and which together bound a channel wherethrough an article for girding has to be moved from the open side, with the sticking side facing outward, that an article for girding engages onto the star wheel in a recess thereof adheringly carrying with it the first tape, the opening of which recess is situated in the region of the slits, whereby the star wheel is set into rotation so that in the recess the article is girded with adhesive tape with the progressive rotation of the star wheel, and wheel and comprise a tilt piece with an actuating part movable pivotally about a pivot axis toward and away from the channel, which tilt piece is urged by spring means to a rest position wherein the cutting knife is located at a distance from the channel and the actuating part is located in the region of the channel for actuation of the tilt piece by an article carried through the channel while severing the tape with which an article is girded. Such a device is known for instance as sealer for bags with food products. The invention has for its object to provide a device, the operation of which is substantially independent of the dimensions of a through-fed article. A derived object of the invention in this respect is to provide a device which is for instance suitable for sealing plastic waste bags and binding bunches of flowers.
A problem with known devices of the said type is that the positioning of the star wheel can be greatly dependent on the thickness of a through-fed article. During girding of an article the star wheel has to be positioned such that a following article can be introduced into the channel without disturbance for girding by the device.
In order to ensure this positioning under all conditions, which is essential for good, disturbance-free operation of the device, the device according to the invention is characterized by
a movable positioning arm, for instance arranged hingedly on the tilt piece which, in the position wherein the knife severs the tape, engages with its free end into a recess in the star wheel, whereby this star wheel is positioned such that another recess is situated in the region of the channel and is ready to receive an article for girding. This configuration has the additional advantage of requiring only very little space.
In preference the device has the feature that the free end of the positioning arm has a form adapted to the form of the recesses. This ensures a small contact pressure while retaining the desired disturbance-free operation.
A positive positioning is achieved with an embodiment which has the feature that when the tilt piece is moved out of the inactive position to the cutting position thereof the arm is carried to its positioning position in a recess of the star wheel by a stop present on the tilt piece.
In a preferred embodiment the device has the feature that the spring means comprise a draw spring connected on one side to the housing and on the other to the positioning arm in a zone located on the side of this positioning arm remote from the said free end. Two functions are here combined with one another, namely resetting of the tilt piece into its ready for operation position and the retraction of the positioning arm.
In order to press together as well as possible the adhering outer ends of the girding tape lying against each other the device can be characterized by a first resilient lip which presses in the region of the channel against the outer ends of the spokes of the star wheel. For this same purpose the device can be characterized by a deflection member which extends in the channel between the star wheel and the cutting means and which, during girding of an arti
REFERENCES:
patent: 4718220 (1988-01-01), Van Rosendal et al.
patent: 5295345 (1994-03-01), Ter Haar
Household Innovations International B.V.
Yeung George
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