RU1798201C - Board cutting device - Google Patents

Abstract

SUMMARY OF THE INVENTION: the device comprises a roll holder mounted in the bed, feed rolls, a longitudinal cutting mechanism, a transverse cutting mechanism including a circular knife mounted in the carriage with the possibility of reciprocating movement, a flat knife mounted in the transverse direction relative to the material supply, to which the disk knife is pressed knife, mode switching means and drive. The drive includes a camshaft connected by means of a shift gear guitar to a knife of the longitudinal cutting mechanism and feed rolls and connected via a helical gear to the carriage of the transverse cutting mechanism. The means for switching operation modes comprises end cams mounted on the camshaft and fine teeth couplings. 4 ill.

Description

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The invention relates to machine tool industry and can be used to cut sheet material from a roll into predetermined rectangular formats from cardboard, paper, film and other materials.

The purpose of the invention is to increase reliability and expand the technological capabilities of the device.

In FIG. 1 - general view of the device; in FIG. 2 is a kinematic diagram; in FIG. 3 - cam assembly with a fine clutch; in FIG. 4 - carriage with a unit for transverse cutting of cardboard.

The cardboard cutting device comprises a bed 1 with a mounted roll holder, feed rolls 2, a longitudinal cutting mechanism consisting of a shaft 3 on which one or more knives 4 are mounted depending on the number of longitudinal sections of the cardboard roll, gears 5 and 6 connecting the shaft 3 with the feed rolls 2, the drive of the device consists of a guitar of interchangeable gears 7 and a camshaft 8, which is connected via a pulley 9 to the drive of the machine (not shown in the drawings), a transverse cutting mechanism consisting of camshaft 8 with it set three with face cams 10, fine clutch .11. a helical gear 12, a wedge pulley 1.3, a belt 14, one branch of which is connected to the carriage 15, on which the circular knife 16 is mounted with the possibility of reciprocating movement, the pulley 17 is mounted on the shaft of the helical gear 18, which is controlled

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cam 19 and the clutch 11, the shaft 8 is connected by a cam 20 and a fine clutch 11 with a shift gear guitar 7, a flat knife 21 is mounted on the edge of the frame 1 in the transverse direction, to which the circular knife 16 of the cross cutting mechanism is pressed with a rubber ring 22, which creates a twist moment when the carriage moves 15.

A device for cutting cardboard works as follows.

A cardboard roll is mounted on the roll holder and the start is started between the feed rolls 2, the number of knives 4 for cutting the cardboard in length is determined and the required number of knives on the shaft 3 is set, and the machine gears are interchangeable with the gears of the guitar 7 for the given length of cutting pieces, for example to a length of 450 mm. This happens as follows. The cam 20 includes the clutch 11 and through the guitar 7 transmits the movement to the shaft 3, the gear 5 and the feed rollers 2, which make one revolution, and the cardboard moves 450 mm, then the rollers stop, and at this time, the clutch 11 and the screw are turned on through the cam 10 the transmission 12 through the pulley 13 and the belt 14 moves the carriage 15 with the circular knife 16 in the transverse direction along the transverse flat knife 21, pressing tightly with its rubber ring 22, and creates torque when the carriage 15 moves, cuts the cardboard in the transverse direction and stops in the extreme left position, after which the cam 20 is turned on again and the clutch 11 and the rolls 2 again make one revolution and stop, then the cam 19 through the clutch 11 engages the left screw gear 18 and through the pulley 17 and the belt 14 the carriage 15 with the circular knife 16 pressed by the rubber ring 22 to the flat knife 21, moves from left to right, cutting off the cardboard, and stops at the edge.

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the work cycle is completed within one revolution of the shaft 8. The device operates in automatic mode until the cardboard roll is completely cut into the desired number of blanks.

Using a cardboard cutting device allows cutting without waste, because the setting is very precise.

The productivity of the device is increased due to the fact that with each movement of the knives cardboard is cut off, there are no idle strokes. The proposed device can also be used for cutting paper, film and other rolled material, for the manufacture of packaging bags.

Claims (1)

SUMMARY OF THE INVENTION A cardboard cutting device comprising a roll holder mounted in a bed, feed rolls, a longitudinal cutting mechanism, a transverse cutting mechanism including a circular knife mounted in the carriage with the possibility of reciprocating movement, a means for switching operating modes and a drive, characterized in that in order to increase operational reliability and expand technological capabilities, the transverse cutting mechanism contains installed transverse to the material feed in direction a flat knife, to which the disk knife is pressed, and the drive includes a camshaft connected by means of interchangeable gear guitars to a knife of the longitudinal cutting mechanism and feed rollers and connected by means of a helical gear to the carriage of the transverse cutting mechanism, while the means for switching the operating modes comprises camshafts and fine claws. eighteen I 17 f /P ft 76 V / figure 2 14 figl