Stacker and method of stacking frozen food patties
阅读：295发布：2022-06-27
专利汇可以提供Stacker and method of stacking frozen food patties专利检索，专利查询，专利分析的服务。并且A stacking method and apparatus for frozen food patties and like disc-shaped articles; the patties are discharged in free fall and at predetermined speed over the terminal end of an input conveyor and are accumulated on a stationary stacking conveyor after rotation of about 180*, being guided into an orderly stack by a guide positioned outwardly of the terminal end of the input conveyor. The stack height is monitored, preferably by counting the patties; when a full stack is collected, the guide is lifted up and away from the stacking conveyor and the stacking conveyor is actuated to move the stack away from the stacking position. The guide is moved back to its original position and the stacking conveyor is stopped before the next patty falls onto the stacking conveyor.，下面是Stacker and method of stacking frozen food patties专利的具体信息内容。
1. A stacker for stacking frozen food patties or like discshaped articles, comprising: a substantially horizontal input conveyor, having a terminal end located at a stacking station for conveying frozen food patties or like disc-shaped articles to the stacking station at a predetermined speed and with predetermined minimum spacing, the input conveyor discharging the articles, in free fall, over its terminal end; a normally stationary stacking conveyor, extending outwardly of the stacking station from a stacking location at a point directly below the terminal end of the input conveyor, the vertical distance from the terminal end of the input conveyor to the stacking conveyor being sufficient to allow each article to rotate through an angle of about 180* as it falls toward the stacking conveyor; a guide, movable between a stack guidance position adjacent the stacking conveyor and a stack release position displaced upwardly from the stacking conveyor and outwardly from the stack guidance position, for guiding the articles to accumulate in an orderly stack on the portion of the stacking conveyor at the stacking location; stacking conveyor actuating means for actuating the stacking conveyor for a limited time interval, not substantially greater than the time interval between discharge of successive articles into the stacking station, to transport an accumulated stack of articles away from the stacking location; guide actuating means for actuating the guide from stack guidance position to release position and back again in timed relation to operation of the stAcking conveyor actuating means, the guide returning to stack guidance position before more than one article for the next stack reaches the stacking conveyor; and means to monitor article accumulation at the stacking location and to energize both of said actuating means when a desired accumulation has been attained.
2. A stacker according to claim 1, in which the guide actuating means comprises a linearly movable actuator member connected to the guide and extending upwardly from the stacking location at an acute angle to the vertical, away from the stacking location, so that movement of the guide to its release position displaces the guide outwardly of the stacking station and allows actuation of the stacking conveyor before the guide reaches its release position.
3. A stacking conveyor according to claim 2, in which the actuator member is the actuator rod of an electrically energized linear actuator.
4. A stacker according to claim 2, in which the guide actuating means includes upper and lower stop members defining the release and stack guidance positions of the guide, each stop member including a bumper of resilient material positioned at one end of the path of the guide movement to cushion the interruption of the guide movement.
5. A stacker according to claim 1 wherein the monitoring means for counting articles moving along the input conveyor and for initiating operation of the guide actuating means is and the stacking conveyor actuating means upon a given count.
6. A stacker according to claim 5, in which the input conveyor is a wire mesh conveyor and the monitoring means includes a light source and a photocell aligned with each other, one above and the other below the input conveyor.
7. A stacker according to claim 1, including a horizontally adjustable mount for the guide and guide actuating means, allowing adjustment of the horizontal position of the guide, toward and away from the stacking location, to accommodate articles of varying dimensions.
8. A stacker according to claim 1, and further comprising a supplemental stationary guide, positioned at the opposite side of the stacking location from the movable guide.
9. A method of stacking frozen food patties and like disc-shaped articles, comprising: conveying a series of disc-shaped articles, in flat, spaced, longitudinal alignment at a predetermined speed along a given generally horizontal input path toward a terminal end of the path; discharging the articles, successively, in free fall, from the terminal end of the input path and into a stacking station; collecting the falling articles in a stack on a normally stationary conveyor surface at the stacking station, at a point directly below the terminal end of the input path, the vertical distance from the terminal end of the input path to the stacking conveyor surface being sufficient to allow each article to rotate through an angle of about 180* as it falls; guiding the articles into an orderly stack by normally maintaining a guide in a guidance position adjacent the stacking conveyor surface and spaced outwardly of the terminal end of the input path; continuously monitoring the height of the stack of articles accumulating on the stacking conveyor surface by counting the articles traversing the input path; moving the guide upwardly of the stacking conveyor surface and outwardly of the terminal end of the input path to a stack release position upon accumulation of a stack of given height; moving the stacking conveyor surface to transport the stack away from the stacking location, substantially simultaneously with movement of the guide toward its release position and in response to monitoring a predetermined height of articles on the stacking conveyor; and restoring the guide to guidance position and stopping movement of the stacking conveyor before the next article reaches the stacking conveyor.
10. A method of stacking according to claim 9 in which the path of movement Of the guide is inclined at an acute angle to the vertical, away from the stacking station, and in which movement of the stacking conveyor surface is initiated before the guide reaches its release position.
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