DE3141457A1 - Device for switching on a cutting roller - Google Patents

Abstract

The invention relates to a device for switching on and switching off a roller cutter which is seated on a movable carriage and is brought into and out of engagement with a cutting ruler for the purpose of cutting paper. The object of the invention consists in bringing the roller cutter into and out of the cutting position using the energy of the carriage without electromechanical auxiliary means. According to the invention, the object is achieved in that the carriage is moved into a position which lies outside the travelling region during the printing and at the same time brings the roller cutter (2) by means of a slide (1) from the stable rest position to the likewise stable cutting position, and vice versa. The advantage of the invention lies in a design of the cutting device which is simple and hence not susceptible to trouble. <IMAGE>

Description

Device for connecting a cutting roller

The invention relates to a device for switching on or

Turning off a roller knife on a cutting ruler that is on a is attached parallel to the printing direction moving head carriage, as known in Way are available for the independent cutting of paper webs.

There are known devices for switching the roller knife, which were solved by electromechanical aids. Such constructions are very time-consuming, as the roller knife is connected to the cutting ruler many individual parts are loosened and are therefore prone to failure.

The object of the invention is to provide a simple connection device to create the cutting roller in cutting position without electromechanical aids and after the cutting process brings the roller knife to rest position.

The object is achieved according to the invention in that by a movement of the head slide to a position that is outside the travel range during the Printing process lies, a slide that has an approach in the form of a rounded Ramp carries, is driven against a stop and thereby the roller knife the rest position is moved into the again stable cutting position or vice versa.

The advantages of the invention are that without additional electromechanical Aids the roller knife is brought into cutting position that the already existing Head slide can be used as a carrier and a few items simple failure-prone cutting device was created.

The invention will then be based on an exemplary embodiment are explained in more detail.

The accompanying drawings show: FIG. 1 a schematic view of FIG Cutting device Fig. 2 slider in rest position Figo 3 slider and roller in Cutting position Fig. 1 shows the essential elements of the device for locking the cutting roller in a spatial arrangement * A writing bar 10 is shown, an outer paper guide 9, an inner paper guide 8, a cutting ruler 7 with the tapered ends, a paper pressure plate 6, a spring 4, the return the cutting roller 2 acts in the rest position be, a cutting roller carrier 5 and a Slide 1 that holds the cutting roller in the stable cutting positionO The functional sequence switching off is shown in FIGS. 2 and 3.

Claims (1)

Device for switching on a cutting roll. Claim device for switching on a cutting roller a cutting ruler on a head carriage that moves parallel to the printing direction attached is d a d u r c h e k e n n n n z e i c h n e t that by slide movement, which is outside the travel range of the carriage during the printing process, a slide (1), which has an approach in the form of a rounded ramp, against one Stop (3) runs and thereby shifted against the direction of travel of the slide is and thereby the cutting roller (2) against the resistance of a spring (4) in the cutting position brings.