IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0626210
(1975-10-28)
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발명자
/ 주소 |
- Sherman Earle C. (West Monroe LA)
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출원인 / 주소 |
- Olinkraft, Inc. (West Monroe LA 02) Anheuser-Busch, Incorporated (St. Louis MO 02)
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인용정보 |
피인용 횟수 :
10 인용 특허 :
0 |
초록
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A tray feeder including a corrugated sheet folding apparatus for rapidly feeding a plurality of corrugated sheets stored in a gravity hopper attached to the apparatus and folding the sheets into a tray shape for reception of cans or other goods, the feeding and folding of the sheets being done in a
A tray feeder including a corrugated sheet folding apparatus for rapidly feeding a plurality of corrugated sheets stored in a gravity hopper attached to the apparatus and folding the sheets into a tray shape for reception of cans or other goods, the feeding and folding of the sheets being done in a continuous, smooth and rapid flow (as opposed to the intermittent flow of the tray feeders of the prior art). The corrugated sheets are stacked in the hopper in such a manner that the upper portion of the foremost sheet is overhung in relation to the central and lower portion of the same sheet with the overhung stacking of the sheets causing the foremost sheets to separate at the upper portion thereof thereby breaking the vacuum between the upper portions of the sheets. The feeding section of the machine includes vacuum means and a split wheel roller system for withdrawing the overhung upper portions of the foremost corrugated sheets rapidly from the hopper in a timed sequence and transporting the sheet to the folding section of the apparatus. The folding section of the apparatus, located at the junction of three separate but coordinated special conveyor systems, includes folding means and hold-down means for raising the sides of the corrugated sheets to form tray cartons in timed synchronization with the feeding section. Each of the three conveyor systems includes special lugs that work in conjunction with a second, split wheel roller system to form in vertical, opposed alignment the ends of the tray carton. Also disclosed is a method of continuously and rapidly feeding corrugated sheets, stacked in a gravity feed hopper, one at a time to a plurality of feed rollers and conveyors and for rapidly folding the corrugated sheets into tray cartons for use with a packaging machine.
대표청구항
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A tray feed for tray blanks of the type having a front flap, a rear flap and a pair of side flaps, all of the flaps being hingedly connected by scorelines to a bottom panel, said tray feeder being designed to withdraw a plurality of unfolded tray blanks, one at a time, from a hopper without destroyi
A tray feed for tray blanks of the type having a front flap, a rear flap and a pair of side flaps, all of the flaps being hingedly connected by scorelines to a bottom panel, said tray feeder being designed to withdraw a plurality of unfolded tray blanks, one at a time, from a hopper without destroying the integrity of the withdrawn tray blank and to convey the withdrawn tray blank continuously to a downstream filler unit with the front and rear flaps of the tray blanks being turned upwardly to a vertical position while the side flaps are turned upwardly to a vertical position while the side flaps are turned downwardly to a vertical position prior to filling of the bottom panel with a predetermined quantity of cans or bottles, comprising: a. a hopper feeder unit, comprising b. an inclined hopper for receiving and holding the plurality of tray blanks; b. vacuum means, associated with said hopper, for withdrawing the tray blanks, one at a time, from said hopper by bending the tray blank downwardly from the front flap while pivoting the tray blank about the rear score-line, which hingedly connects the rear flap to the bottom panel; 3. conveyor means, associated with said feeder unit, for conveying the withdrawn tray blank in a downward direction from said hopper and forward away from said hopper; b. first, horizontal conveyor unit means, associated with said hopper feeder unit, for receiving the downwardly and forwardly moving tray blank and continuously moving it horizontally forward away from said hopper; c. second, upwardly running, inclined kicker conveyor unit means, positioned below said first horizontal conveyor unit means, for kicking up and bending upwardly the front flap of the tray blank, about the front scoreline, which hingedly connects the front flap to the bottom panel, to an upwardly inclined position while said first conveyor unit means is continuously moving the tray blank in said forward, horizontal direction; d. hold-down means, positionEd about said second conveyor unit means, for holding down the front flap as the tray blank moves in said forward horizontal direction said hold down means also for holding down the rear flap when the rear flap is bent upwardly; e. third generally horizontal conveyor unit means, associated with said second conveyor unit means for retaining the front flap in a vertical position while bending the rear flap about the rear scoreline to a vertical position, the rear flap being held down by said hold down means, said third conveyor unit means further serving to retain the rear flap in a vertical position while transporting the tray blank in said horizontal, forward direction; and f. turning means, associated with said third conveyorunit mens, for turning the side flaps about their scorelines to a downwardly vertical position while said front and rear flaps are being held in an upwardly vertical position.
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