Method And Apparatus For Magazine Pressure Control
First Claim
1. A method of controlling pressure exerted by carton blanks at a pick face of a carton forming machine, comprising the steps of:
- feeding a stack of carton blanks toward the pick face;
engaging at least a portion of the periphery of the carton blanks with pressure control wheels and operating the wheels to feed the carton blanks toward the pick face while the stack of blanks is being fed;
discontinuing the feeding of the carton blanks when the pressure exerted by the carton blanks in the direction of feeding reaches a predetermined value.
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Accused Products
Abstract
A magazine pressure control is provided with pressure control wheels that are designed to regulate pressure on carton blanks being fed to a folder/gluer in a carton forming operation. These wheels are disposed around the periphery of the carton blank to urge the edges of the cartons forward and to straighten misaligned cartons. A separately controlled motor operates each half of the magazine pressure control. Each motor is controlled by a pressure sensor assembly and regulates the progression of the carton blanks through the magazine pressure control to equalize the pressure around the periphery of the carton blanks as they are presented to the pick face of the folder/gluer.
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Citations
19 Claims
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1. A method of controlling pressure exerted by carton blanks at a pick face of a carton forming machine, comprising the steps of:
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feeding a stack of carton blanks toward the pick face; engaging at least a portion of the periphery of the carton blanks with pressure control wheels and operating the wheels to feed the carton blanks toward the pick face while the stack of blanks is being fed; discontinuing the feeding of the carton blanks when the pressure exerted by the carton blanks in the direction of feeding reaches a predetermined value. - View Dependent Claims (2, 3, 4)
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5. A method of aligning carton blanks which are being fed toward a pick face of a carton forming machine, comprising the steps of:
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in response to pressure exerted on at least a first pressure sensor assembly proximate a first side of the carton blanks, discontinuing feeding said first side of the carton blanks when that side exerts a predetermined value of pressure in the feed direction at the pick face; and in response to pressure exerted on at least a second pressure sensor assembly proximate a second side of the carton blanks, discontinuing feeding said second side of the carton blanks when that side exerts said predetermined value of pressure in the feed direction at the pick face; whereby the carton blanks will be aligned perpendicular to the feed direction at the pick face. - View Dependent Claims (6, 7, 8, 9)
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10. Apparatus for use with the feeding of carton blanks toward a carton-forming machine, comprising:
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a frame having an opening therethrough sufficient to permit the passage of the carton blanks being fed; rotatable shafts at one side of the frame adjacent the top, side and bottom of the opening; rotatable shafts at the opposite side of the frame adjacent the top, side and bottom of the opening; means for rotating the shafts at one side of the frame independently of the shafts at the opposite side of the frame; and a plurality of pressure control wheels mounted on the shafts for rotation therewith to engage the edges of carton blanks being fed through the opening. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification