Automated velcro feed and cut assembly for ultrasonic welding ap

Details Automated velcro feed and cut assembly for ultrasonic welding ap Automated velcro feed and cut assembly for ultrasonic welding ap

1987-08-24

1988-06-21

Wityshyn, Michael

Adhesive bonding and miscellaneous chemical manufacture

Surface bonding means and/or assembly means therefor

Presses or press platen structures, per se

156 733, 156261, 156518, 228 11, B29C 6508

Patent

active

047523514

ABSTRACT:
A motorless Velcro tape feed and cut assembly acting as a slave unit which cooperates with the horn of an ultrasonic welding machine. When the horn is brought down to carry out a welding action, it then depresses the spring-biased operating block of the assembly, causing it to shift downwardly from its normally raised position above a base plate to a final position adjacent to the base plate, the block returning to its raised position when the horn is retracted. Anchored on the base plate and projecting thereabove is an anvil which telescopes within an open-ended anvil channel in the block, the length of the anvil being such that in the final position of the block its head is then in operative relation to the horn to effect welding of a Velcro component onto a fabric lying on the upper face of the block. Disposed within the block is a Velcro tape feed roller that is driven in response to block movement as the block returns to its raised position, the rotating roller then advancing the leading end of the tape through the eye of a cutting block into the anvil channel to occupy a position therein above the anvil head. When in the course of a welding machine cycle the horn is brought down to depress the block, this action causes the leading end of the tape to be severed to form a Velcro component that is then pressed by the anvil head against the fabric, the Velcro component then being welded to the fabric by the horn.

REFERENCES:
patent: 2157556 (1939-05-01), Menschner
patent: 3168430 (1965-02-01), Almasi
patent: 3823055 (1974-07-01), Schulz et al.
patent: 3857346 (1974-12-01), Dal Negro
patent: 4220493 (1980-09-01), Wehr et al.
patent: 4552600 (1985-11-01), Laiewski et al.

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