SU475261A1 - Apparatus for cutting a web roll into sheets - Google Patents

Description

one

The invention relates to devices for cutting a web roll, in particular wrapping paper used in warehouses, bases, in stores, as well as in other places of consumption of wrapping paper, into sheets.

A device for cutting a web roll into sheets of sheets, comprising a frame, a supporting frame for holding the roll, a knife disposed in guides, and a drive are known.

In order to increase productivity, the proposed device is equipped with a platform installed with the possibility of reciprocating movement in the vertical plane relative to the frame by means of screws, and the frame is hingedly mounted on the platform, the knife being installed with the possibility of reciprocating movement along the forming roll, the knife drive is made in the form of a closed circuit, and in order to cut sheets on the part, the device has clamping spring-loaded strips associated with the frame, an ejector for the sheet in the paper, plarnirno mounted on the frame.

FIG. 1 shows a diagram of the device, front view; in fig. 2 is the same, view along arrow A in FIG. one; in fig. 3 - shows the position of the roll at the time of cutting; in fig. 4 - the position of the roll after cutting; pas figs. 5 - cut but bb on fpg. one; in fig. 6 - view from

arrow B in FIG. one; in fig. - cross section along GG in FIG. 6; in fig. 8 is a section along d-d in FIG. 6. The device comprises a frame 1 on which the platform 2 is located, mounted with the possibility of reciprocating vertical motion relative to the base 1 by means of screws 3 connected to the electric motor 4 via a chain transmission 5 and a gearbox 6.

A frame 7 is mounted on the platform 2 of Sharnrio to hold the roll 8. A knife 9 is mounted above the platform with the possibility of reciprocating movement along the

forming a roll 8 from a drive made in the form of a closed circuit 10 connected via a gearbox 11 and a gear 12 with an electric motor 13.

The blade of the knife 9 is located in the guides 14 attached by means of the brackets 15 to the frame.

To align the cut surface of the roll 8 in the horizontal plane of the frame 7

mounted on platform 2 on a semi-axle x 16 and installed at a predetermined angle to the horizontal by means of an adjusting mechanism consisting of a pivoting lever 17, which is connected to the frame, and an adjusting bolt 18.

On the described device, it is possible to cut not only the roll 8, but also the foot obtained after cutting the roll into parts of a given format. For this, on both sides of the guides 14 are located spring-loaded strips 19, hingedly mounted on levers 20 associated with the bed 1.

In order to bend the collapsed roll before cutting the resulting paper foot into parts and create an emphasis for the knife 9 on the frame 7, an ejector consisting of lever strips 21 and cams 22 in contact with them mounted on the rotary shaft 23 is pivotally mounted.

To move the frame 1 mounted on rubber wheels 24. The device operates as follows. The roll 8 to be cut is laid on the platform 2 located at the bottom of the bed 1. Then the platform drive 4, 5, 6 is turned on, which moves it by means of the screws 3 in the vertical plane until it touches the blade of the knife 9.

Moving on the chain 10 along the generatrix of the roll 8, the knife simultaneously with the lifting of the platform cuts the roll. The slats are prevented from moving to the sides. The operation to pass the knife 9 along the roll is repeated several times until the roll is broken. After that, the resulting stack of paper is raised on the platform.

and bend with the ejector, while the clamping bars 19 fix the paper being cut. Include the drive of the knife and cut the sheets of paper into pieces of a given format. The cut sheets are removed from the mashiya either in piles or individually.

Nredmet of the invention

Claims (3)

1. A device for cutting a web roll into sheets comprising a frame, a carrier frame for holding the roll, a knife disposed in guides, and a drive, characterized in that, in order to increase productivity, the device is provided with a platform installed with reciprocating motion in the vertical plane relative to the frame by means of screws, and the frame is hingedly mounted on the platform, with the knife mounted for reciprocating along the forming roll. 2. A device according to claim 1, characterized in that the knife drive is made in the form of a closed circuit. 3. The device according to claim 1, characterized in that, in order to cut the sheets into pieces, it has a clamping spring-loaded strips associated with the frame, and an ejector for sheets of paper, mounted on the frame. Rig I iCi IQ i X: s Ci View B 222 Yy dim 22 23 9ig.7 1c (Rig. In Fig. 6