US3921825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag-turning stacking palletizer
Assignee: Individual
•
Filing: 1970-11-12
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Granted: 1975-11-25
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Expires: 1990-11-12
Abstract
Abstract A pallet-supporting structure includes a vertical empty pallet magazine in which empty pallets are stacked and delivered one by one to an endless-belt slat conveyor which carries each pallet beneath an optional pallet cover sheet dispenser which in turn deposits a cover sheet of cardboard or other suitable material upon each pallet. The slat conveyor then moves the thus-covered pallet to a loading station beneath a bag stacker including a stacker-supporting structure mounted for movement laterally of the pallet-supporting structure. An elevator is mounted on said stacker-supporting structure and a carriage is mounted on said elevator for longitudinal movement toward and away from said pallet-supporting structure. A bag transfer conveyor is mounted on the carriage for longitudinal movement therewith and a bag turner is also mounted on said carriage adjacent said transfer conveyor for longitudinal movement with said carriage and is rotatable between a longitudinal position disposed in alignment with the transfer conveyor and a lateral position disposed transverse to said transfer conveyor. The bag turner has a bag discharge outlet therein and a closure movably mounted thereon. Hydraulic cylinders controlled by solenoidally-operated valves are provided for moving the stacker-supporting structure laterally, for moving the elevator vertically, for moving the carriage longitudinally, and for rotating the bag turner between its longitudinal and transverse positions.
Inventors
- 👤 Robert T Sheehan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:40
CPC Classifications
B; B65; B65G; B65G57/00; B65G57/02; B65G57/16; B65G57/20; B65G57/22; B65G57/24; Y; Y10; Y10S; Y10S414/00; Y10S414/10; Y10S414/106
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
207 words
A bag-turning palletizer, comprising a pallet-supporting structure disposed at a bag-stacking station, and a bag stacker disposed adjacent said pallet-supporting structure at said bag-stacking station and including a base structure mounted for movement laterally of said pallet support structure, an elevator mounted on said base structure for upward and downward movement relatively to said base structure, a stacker carriage mounted on said elevator for longitudinal movement thereon toward and away from said pallet-supporting structure, a bag-transfer conveyor mounted on said carriage for longitudinal movement therewith, a bag turner rotatably mounted on said carriage adjacent said transfer conveyor for longitudinal movement with said carriage and rotatable between a longitudinal position aligned with said transfer conveyor and a lateral position transverse to said transfer conveyor, said bag turner having a bag discharge outlet and a closure movably mounted thereon for travel into the out of closing relationship with said bag outlet, power-operated means for moving said base structure laterally of said pallet-supporting structure, power-operated means for moving said elevator upward and downward relatively to said base structure, power-operated means for moving said carriage longitudinally of said elevator, power-operated means for actuating said transfer conveyor, and power-operated means for rotating said bag turner between said longitudinal and transverse positions thereof.
Claim 2
Dependent Claim
207 words
A bag-turning palletizer, comprising a pallet-supporting structure disposed at a bag-stacking station, and a bag stacker disposed adjacent said pallet-supporting structure at said bag-stacking station and including a base structure mounted for movement laterally of said pallet support structure, an elevator mounted on said base structure for upward and downward movement relatively to said base structure, a stacker carriage mounted on said elevator for longitudinal movement thereon toward and away from said pallet-supporting structure, a bag-transfer conveyor mounted on said carriage for longitudinal movement therewith, a bag turner rotatably mounted on said carriage adjacent said transfer conveyor for longitudinal movement with said carriage and rotatable between a longitudinal position aligned with said transfer conveyor and a lateral position transverse to said transfer conveyor, said bag turner having a bag discharge outlet and a closure movably mounted thereon for travel into the out of closing relationship with said bag outlet, power-operated means for moving said base structure laterally of said pallet-supporting structure, power-operated means for moving said elevator upward and downward relatively to said base structure, power-operated means for moving said carriage longitudinally of said elevator, power-operated means for actuating said transfer conveyor, and power-operated means for rotating said bag turner between said longitudinal and transverse positions thereof.
Claim 3
Dependent Claim
42 words
A bag-turning palletizer, according to claim 2, wherein said power-operated means include hydraulic motors and electrically-actuated valves connected thereto for controlling said hydraulic motors, and wherein said prime mover includes a power-driven generator of hydraulic pressure fluid hydraulically connected to said valves.
Claim 4
Dependent Claim
31 words
A bag-turning palletizer, according to claim 2, wherein the bag transfer conveyor is an endless belt conveyor, and wherein the power-operateD means for actuating the same is a rotary hydraulic motor.
Claim 5
Dependent Claim
17 words
A bag-turning palletizer, according to claim 1, wherein the pallet-supporting structure includes an endless belt pallet conveyor.
Claim 6
Dependent Claim
39 words
A bag-turning palletizer, according to claim 4, wherein a rotary hydraulic motor is operatively connected to said pallet conveyor, and wherein said prime mover includes a power-driven generator of hydraulic pressure fluid hydraulically connected to said rotary hydraulic motor.
Claim 7
Dependent Claim
25 words
A bag-turning palletizer, according to claim 1, wherein the bag transfer conveyor and the bag turner are mounted on said carriage in depending relationship thereto.
Claim 8
Dependent Claim
54 words
A bag-turning palletizer, according to claim 4, wherein an empty pallet magazine adapted to hold a stack of empty pallets is disposed in communication with said pallet conveyor, and wherein said pallet conveyor includes means thereon for detachably engaging the lowermost pallet of the stack for conveying the detached pallet to said bag-stacking station.
Claim 9
Dependent Claim
61 words
A bag-turning palletizer, according to claim 7, wherein a pallet sheet cover dispenser is disposed adjacent said pallet conveyor and between said empty pallet magazine and said bag stacking station and includes mechanism for detaching a pallet sheet cover from a stack thereof in said dispenser and for depositing the detached sheet cover on the detached pallet on said pallet conveyor.
Claim 10
Dependent Claim
48 words
A bag-turning palletizer, according to claim 8, wherein said detaching and depositing mechanism includes a suction device, a vacuum pump operatively connected to said suction device, and means for moving the stack of sheet covers and said suction device relatively to one another into engagement with one another.
Claim 11
Dependent Claim
31 words
A bag-turning palletizer, according to claim 9, wherein said last-mentioned means includes a cover sheet support and a hydraulic cylinder operatively connected to said support for raising and lowering said support.
Claim 12
Dependent Claim
51 words
A bag-turning palletizer, according to claim 1, wherein said elevator-moving power-operated means includes forward and rearward pairs of vertical hydraulic cylinders having lift pistons therein operatively connected to said elevator and disposed in outwardly-spaced relationship to said carriage, and wherein said prime mover includes a power-driven generator of hydraulic pressure fluid.
Claim 13
Dependent Claim
51 words
A bag-turning palletizer, according to claim 12, wherein said prime mover also includes an electrically-operated control valve and a hydraulic circuit connecting said control valve to said vertical hydraulic cylinders, and also includes a flow-divider connected to each pair of said cylinders, and a flow-divider connected between said pairs of cylinders.
Claim 14
Dependent Claim
39 words
A bag-turning palletizer, according to claim 1, wherein a bag feed-on conveyor is coupled to said bag transfer conveyor, and wherein a swivel-wheel-equipped support is connected to said bag-feed-on conveyor remote from its coupling with said bag transfer conveyor.
Claim 15
Dependent Claim
32 words
A bag-turning palletizer, according to claim 12, wherein said support has an elongated slot therein, and wherein a stayionarily-anchored post is disposed in relatively sliding engagement with the edges of said slot.
Claim 16
Dependent Claim
48 words
A bag-turning palletizer, according to claim 13, wherein said bag feed-on conveyor is an endless belt conveyor, wherein a rotary hydraulic motor is drivingly connected to said last-mentioned conveyor, and wherein said prime mover includes a power-driven generator of hydraulic pressure fluid hydraulically connected to said rotary motor.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-24 | 1979-05-26 | 1979-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-24 | 1983-05-26 | 1983-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-24 | 1987-05-26 | 1987-11-25 | $7700.00 | Window Closed / Lapsed |