Method for stopping and starting an automatic machine for collectively wrapping products, especially rolls of toilet or kitchen paper
First Claim
1. A method for stopping and restarting an automatic machine (1) for wrapping products (2), in particular rolls of toilet or kitchen paper, in a collective pack using a wrapping film (4a;
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4b) unwound from a reel (31a;
31b), the method comprising the following automatic sequence of steps, triggered by the activation of a control for stopping the machine (1);
reducing speed of the machine (1) to a speed (V2) suitably lower than the working speed (V1);
stopping infeed of the products (2) to the machine (1);
stopping infeed of a first wrapping film (4a) to the machine (1) with a delay of at least four steps after stopping the infeed of the products (2);
stopping the machine (1) after the products (2) inside the machine (1) have moved at least three steps forward;
the method further comprising the steps of;
substituting the second first reel (31a) of the first wrapping film (4a) with a second reel (31b) of a second film (4b);
loading the film (4b) of the second reel (31b) into the related film feed means (33, 34);
restarting the machine (1) and thereby automatically activating a sequence of steps including;
restarting the second wrappng film (4b) unwinding from the second reel (31b);
positionally centering the wrapping film (4b);
restarting the machine (1) at a reduced speed (V2), lower than the working speed (V1);
restarting the product (2) infeed;
restarting infeed of sheets (18) of the second wrapping film to the machine with a delay of at least four steps after restarting the product (2) infeed.
1 Assignment
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Accused Products
Abstract
A method for stopping and restarting an automatic machine (1) for wrapping products (2), in particular rolls of toilet or kitchen paper, in a collective pack (3) using a packaging film (4a) unwound from a first reel (31a). The method comprises the following automatic sequence of steps: reducing the speed of the machine (1); and stopping the feeding of the products (2) and of the film (4a) at suitably synchronized intervals from each other relative to the processing of the products (2). The method subsequently comprising the steps of: substituting the first reel (31a) of the film (4a) with a second reel (31b); loading the film (4b) on the second reel into feed means (33, 10 34). Restarting the machine (1) at reduced speed and thereby automatically activating the following sequence of steps: unwinding and positionally centering the film (4b); and restarting the feeding of the products (2) and of the film (4a) at suitably synchronized intervals from each other relative to the products.
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Citations
9 Claims
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1. A method for stopping and restarting an automatic machine (1) for wrapping products (2), in particular rolls of toilet or kitchen paper, in a collective pack using a wrapping film (4a;
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4b) unwound from a reel (31a;
31b), the method comprising the following automatic sequence of steps, triggered by the activation of a control for stopping the machine (1);reducing speed of the machine (1) to a speed (V2) suitably lower than the working speed (V1);
stopping infeed of the products (2) to the machine (1);
stopping infeed of a first wrapping film (4a) to the machine (1) with a delay of at least four steps after stopping the infeed of the products (2);
stopping the machine (1) after the products (2) inside the machine (1) have moved at least three steps forward;
the method further comprising the steps of;
substituting the second first reel (31a) of the first wrapping film (4a) with a second reel (31b) of a second film (4b);
loading the film (4b) of the second reel (31b) into the related film feed means (33, 34);
restarting the machine (1) and thereby automatically activating a sequence of steps including;
restarting the second wrappng film (4b) unwinding from the second reel (31b);
positionally centering the wrapping film (4b);
restarting the machine (1) at a reduced speed (V2), lower than the working speed (V1);
restarting the product (2) infeed;
restarting infeed of sheets (18) of the second wrapping film to the machine with a delay of at least four steps after restarting the product (2) infeed. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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4b) unwound from a reel (31a;
Specification