RU1812113C - Sheet material cutting device - Google Patents

Abstract

Use: cutting rubberized cord or metal cord fabric. SUMMARY OF THE INVENTION: The drive for moving a movable knife beam is made in the form of a power cylinder mounted on a bed. The cylinder rod is hinged to a movable knife beam. A shaft is mounted in bearings perpendicular to the movement of the movable knife beam on the bed with levers fixed at its ends. The opposite ends of the levers are pivotally connected to the connecting rods, and the latter are pivotally connected to the movable knife beam. In operation, greater cutting accuracy is achieved with a simple device design. 3 ill.

Description

The invention relates to equipment for cutting sheet materials and can be used in busbars and. the rubber industry, in particular for cutting a brownened cord or metal cord web.

The purpose of the invention is to simplify the design of the device.

Figure 1 shows a General view of the device in isometry; figure 2 is a section aa in figure 1; in Fig.Z - knives.

The device comprises a frame 1, a fixed knife beam 2 mounted on it, and a movable knife beam 3 mounted on it, with flat knives 4 and 5 mounted on them. The movable beam 3 is mounted with its flat guides on the flat guides of the fixed beam 2 by means of clamping bars 6 fixed to racks 7 mounted on the bed 1. On the bed 1 by means of the beam 8 a sip cylinder is fixed

9, the rod 10 of which is pivotally connected to a movable knife beam 3.

A shaft 12 is mounted on the bed 1 by means of bearing pins 11, at the ends of which levers 13 are mounted, the opposite ends of which are pivotally connected to connecting rods 14, pivotally connected by bearing pins 15c with a movable knife beam 3.

The movable knife beam 3 is made in such a way that the flat knife 5 mounted on it makes an angle c (cutting angle) with the fixed knife 4, selected depending on the thickness and strength characteristics of the material being cut.

On the bed 1, a table 16 for enlarging the material to be cut 17 is enlarged.

The operation of the device is as follows.

The support table 16 feeds the material 17 by the required amount. Then the power cycle is triggered

WITH

with

fo

Cj

Indr 9 under the action of which the knife beam 3 with the knife 5 will fall down along the skid - A. When it comes into contact with the material to be cut 17, under the action of cutting forces, a tipping moment will occur, which should lead to the skew of the knife beam 3, but this will not happen, because when moving the beam 3, the levers 13 and 14 come into action, which are connected by means of the shaft 12 and provide. the movement of both ends of the beam 3 by the same amount, i.e. synchronous movement of the beam parallel to its original position without distortions.

This movement of the knife beam 3 15 provides high quality cutting.

After the end of the cutting process, the actuator is actuated in the opposite direction and the knife beam 3 returns to the upper (initial) position 20. Then the cycle of work is repeated.

The proposed device design is much simpler than existing known devices. In addition, it allows you to make a device with a significantly longer length of flat knives, which expands

operational capabilities when cutting a large width of sheet material, at various cutting angles at which the length of the cut line is significant.

Claims (1)

SUMMARY OF THE INVENTION A device for cutting sheet material, comprising a bed and fixed and movable knife beams mounted on it, on which flat knives are mounted, a drive for moving a movable knife beam, wherein, in order to simplify the design of the device, the drive the movable knife beam is made in the form of a power cylinder mounted on a bed, the rod of which is pivotally connected to the movable knife beam, and mounted on the bed in bearings perpendicular to the movement of the movable but Eve beams shaft with its ends fixed to the levers, the opposite ends of which are pivotally connected to the connecting rods, and the latter is pivotally coupled to the movable blade beam.