STRUCTURE OF INTERFOLDING MACHINE WITH ADJUSTABLE CUT-OFF
First Claim
1. Interfolding machine having a frame comprising:
- a feeding section where at least one web of paper is fed at a first speed,a cutting section comprising;
at least one cutting roller on which at least one blade acts adapted to divide the web of paper into sheets of determined length;
at least one transfer roller adapted to convey forward at said first speed the sheets cut in turn by the cutting roller;
an interfolding section at which the sheets of paper coming from the cutting section travel at a second speed less than the first speed, said interfolding section comprising;
means for partially overlapping the sheets suitable to form an overlapped portion between two consecutive sheets exploiting the difference between the first and the second speed,folding means comprising folding rollers, said folding means being adapted to arrange said partially overlapped sheets in a determined interfolded configuration causing the sheets to form underneath a stack of product;
a separating section where a stack of interfolded sheets is separated from a next stack and is withdrawn from the area of process through separating means;
characterised in that said cutting section comprises a portion having a modular structure removable integrally from said frame for being replaced with an equivalent portion that is adapted to work with different cut-off.
2 Assignments
0 Petitions
Accused Products
Abstract
An interfolding machine (100) having a modular structure and with variable cut-off, having a frame (21) comprising a first plate (21a) and a second plate (21b), parallel to each other, interconnected by means of beams (25). Between the plates (21a and 21b) folding rollers (8 and 9), means for moving (10) and an overlap roller (6), are arranged. Each plate (21a, or 21b), has a complementary shape to a respective upper plate (31a, or 31b). The higher plates (31a and 31b) are connected by means of beams (35) among one another. Between the plates (31a and 31b) instead the cutting roller (16), the transfer roller (5) and the cutter (17) with the blade (3) are arranged. This way, a modular portion (30) is formed removable independently from a main portion (20) of the frame. Alternatively, the removable portion (30) can comprise the only cutting roller (16) and the cutter (17) with the blade (3). Alternatively, the only transfer roller (5) may be provided. The advantage of the invention is that the removable portion brings with it gearings, bearings, supports, etc. of the substituted rollers, and it is exchanged with another equivalent but with different cut-off with a machine stop that is very short. The removable portion (30) can be slidingly mounted on longitudinal guides (36). This assists its removal from the working position, and provides a change with another removable portion (30) provided with rollers (16, 17 and 5) of diameter corresponding to the length of the interfolded sheets of the final stack.
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Citations
10 Claims
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1. Interfolding machine having a frame comprising:
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a feeding section where at least one web of paper is fed at a first speed, a cutting section comprising; at least one cutting roller on which at least one blade acts adapted to divide the web of paper into sheets of determined length; at least one transfer roller adapted to convey forward at said first speed the sheets cut in turn by the cutting roller; an interfolding section at which the sheets of paper coming from the cutting section travel at a second speed less than the first speed, said interfolding section comprising; means for partially overlapping the sheets suitable to form an overlapped portion between two consecutive sheets exploiting the difference between the first and the second speed, folding means comprising folding rollers, said folding means being adapted to arrange said partially overlapped sheets in a determined interfolded configuration causing the sheets to form underneath a stack of product; a separating section where a stack of interfolded sheets is separated from a next stack and is withdrawn from the area of process through separating means; characterised in that said cutting section comprises a portion having a modular structure removable integrally from said frame for being replaced with an equivalent portion that is adapted to work with different cut-off. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification