System for informing paper shift in apparatus for producing corrugated paper boards
First Claim
1. A system for controlling a paper shift in a corrugated paper board production apparatus comprising:
- remaining production length determining means for providing a remaining production length signal indicative of a remaining production length from a slicer to a splice point;
running speed determining means for providing a running speed signal indicative of a running speed of each web in said apparatus;
paper shift remaining time calculating means for receiving said remaining production length signal and said running speed signal and for providing a remaining time signal indicative of a time remaining until a paper shift is required responsive to said remaining production length signal and said running speed signal;
data storage means for storing data indicative of at least one time required for preparation of a paper shift and for providing a prior time data output indicative of said data; and
prior time informing means for receiving said prior time data output and for generating said informing signal when said remaining time signal is equal to a predetermined value;
prior time determination means for receiving said remaining time signal and for outputting an informing signal when said remaining time signal reaches a predetermined value, said prior time determination means including data storage means for storing data indicative of at least one time required for preparation of a paper shift and for providing a prior time data output indicative of said data, and prior time informing means for receiving said prior time data output and for generating said informing signal when said remaining time signal is equal to said predetermined value; and
deceleration commanding means for outputting a deceleration command signal to decelerate a running speed of each web responsive to said informing signal.
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Accused Products
Abstract
To determine a paper splice time when the present web is spliced to a next web for the purpose of a so-called lot shift (or a paper shift) in an apparatus for producing corrugated paper boards, not only a length of each core but also a length of each web have been hitherto measured. In view of the current circumstance that a measuring operation is accompanied by various errors and an order is often given with a small lot in size, determination of a paper shift time is made at an operator'"'"'s discretion which depends on his skill. In practice, there often arises a malfunction that the operator erroneously determines the time when a paper shifting operation is to be performed. To obviate the foregoing malfunction, the present invention provides a system for informing a paper shift during a production controlling operation for an apparatus for producing corrugated paper boards wherein a remaining time till the time when a paper shifting operation is performed can be assured by a time enough long to accomplish the paper shifting operation regardless of a lot size and moreover a warning for informing the time when the paper shifting operation is started as well as a warning at each step during production of corrugated paper boards can be instructed.
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Citations
14 Claims
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1. A system for controlling a paper shift in a corrugated paper board production apparatus comprising:
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remaining production length determining means for providing a remaining production length signal indicative of a remaining production length from a slicer to a splice point; running speed determining means for providing a running speed signal indicative of a running speed of each web in said apparatus; paper shift remaining time calculating means for receiving said remaining production length signal and said running speed signal and for providing a remaining time signal indicative of a time remaining until a paper shift is required responsive to said remaining production length signal and said running speed signal; data storage means for storing data indicative of at least one time required for preparation of a paper shift and for providing a prior time data output indicative of said data; and prior time informing means for receiving said prior time data output and for generating said informing signal when said remaining time signal is equal to a predetermined value; prior time determination means for receiving said remaining time signal and for outputting an informing signal when said remaining time signal reaches a predetermined value, said prior time determination means including data storage means for storing data indicative of at least one time required for preparation of a paper shift and for providing a prior time data output indicative of said data, and prior time informing means for receiving said prior time data output and for generating said informing signal when said remaining time signal is equal to said predetermined value; and deceleration commanding means for outputting a deceleration command signal to decelerate a running speed of each web responsive to said informing signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification