Carton forming apparatus with servo control
First Claim
1. An apparatus for forming cartons from flat paperboard blanks comprising:
- a die for receiving the blank;
a reciprocating plunger to push said blank through said die to form said carton;
servo drive means including a variable speed electric motor for said plunger; and
programmable control means for operating said servo drive means;
whereby the full operating motion of said plunger can be infinitely varied to fit the forming action desired.
2 Assignments
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Accused Products
Abstract
An apparatus for forming paperboard cartons from flat blanks is provided. The carton blanks are fed from a magazine to the face of a forming die, a reciprocating plunger is provided to push the blank through the die forming the carton, and an endless conveyor receives the carton after being stripped from the bottom of the die. A servo drive means for the plunger, blank feeder and conveyor are each independently driven by an infinitely variable speed electric motor. A programmable logic controller operates the servo drive means, whereby the plunger, feeder and conveyor can be infinitely varied to fit the forming action desired. The servo drive means preferably takes the form of a variable speed, electronic servo motor including an encoder and a tachometer feedback. Product sensor means detect product availability and carton sensor means detects carton availability with both sensor means also being controlled by the programmable logic controller.
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Citations
10 Claims
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1. An apparatus for forming cartons from flat paperboard blanks comprising:
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a die for receiving the blank; a reciprocating plunger to push said blank through said die to form said carton; servo drive means including a variable speed electric motor for said plunger; and programmable control means for operating said servo drive means; whereby the full operating motion of said plunger can be infinitely varied to fit the forming action desired. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification