SU384678A1 - DEVICE TO VALKOVY MACHINES FOR LONGIT CUTTING - Google Patents

Description

one

Known devices for roller machines for longitudinal cutting of rubber strip, for example, on a calender roll, contain a set of circular knives, each of which is mounted on a spring-loaded double-arm lever swiveling on an axis of a bracket fixed to a housing movable on a guide rod from a knife installation mechanism to a predetermined shchi.inu cutting.

In known devices, the installation of knives to a predetermined cutting width is carried out by a mechanism including a replaceable comb, which leads to the need to halt the cutting process, to reduce productivity and to accurately install the knives in the rubber cutting process.

In order to improve the performance and exact installation of knives in the process of cutting rubber in the proposed device, the installation mechanism for knives is designed as screw rods with left and right thread rods installed parallel to both sides of the guide rod and without them with disk knives mounted on korpusal, moving on screw rods, when they are rotated from the drive by means of bevel gears.

To speed up the installation of the disc blades on the working stroke or in the idle position, carrying the disc knife, the shoulder of each double-arm lever is pivotally connected to the rod, the free end of which interacts with the eccentric cam pivoting from the handle.

FIG. 1 and FIG. 2 shows the proposed device, in two projections.

The device comprises cheeks 2, on which a guide rod 2 is fixed by means of nuts 3 and two screw rods 4 having sections with left and right threads. Rods 4 are mounted parallel to guide rail 2 on either side thereof.

On the guide rod 2 and the threaded sections of the screw rods 4 are installed

bodies 5 freely moving on rod 2 when rods 4 are rotated.

The rotation of the tongs 4 is carried out from the bevel gears 6, fixed on the ends of the tongs 4 and rotated by the bevel gears 7, using the handwheels 8 fixed on the rollers 9, mounted HbiLX racks 10 welded to the cheek.

On each body 5, two brackets 11 are fastened, in the holes of which axle 12 is pressed. On axis 12 two two shoulders levers 13 are mounted by means of pairs of bearings in pairs. 14. On one arm of levers 13 axles 15 are fixed, on which bearing 16 mounted disk

the knives 17, and the second shoulder are reinforced with spring 18. The regulation of the reinforcements, tension of the rivals and 18 is made by screws and 19 with nuts 20. To supply the knives to the roll of the machine or to move away from the roll, there are 21 gates, one end of which pivotally connecting with a bearing disk leg of each double-arm lever 13, and the second with an eco-centered cam 22 equipped with a handle 23. When turning the eccentric cam 22 2}, they will move in the axial direction, swing the levers / 5 and bring or take the circular knives 17 to the felling 24 or from it, on the cat swarm produced .reziny cutting strip.

With the help of t g 21, knives can be put into operation in a combination of the number of cases 5, in which the circular knives 17 are installed in pairs, can be chosen anyway depending on the required amount of rubber cut from the roller machine .

As an example, niF. 2 shows a device having four housings 5, with a pair of mounted knives 17.

Paired installation of circular knives 17 at a certain distance from each other allows to obtain narrow poloski rubber bands of exact width, necessary, for example, for isolating the edges of cord blanks without rebuilding the blades. In this case, an average pair of bodies 5 is used for cutting tapes needed for insulation and edges or laying rubber interlayers on cord logs of small width, and extreme ones for wider blanks.

The device works as follows.

By roller machine get rubber required thickness. Then, turning the eccentric. IKOV 22 put into operation the necessary knives 17, which are pressed against the rubber layer on the roll 24 of the machine. And cut the rubber layer to the surface of the roll 24. During the rotation of the roll 24, the rubber layer will be cut into longitudinal strips between adjacent disk knives 17. Rubber bands are retracted and applied to cord blanks, and narrow rubber bands are applied to the edge insulation. The extreme edges of the rubber bands (surplus) are retracted into the gap between the rollers, where, together with the loaded rubber, they are calibrated and re-supplied to the blades.

Strip rubber slitting cycle

5 is performed in this manner continuously.

With pai6oTe, the knives cut through the rubber with the necessary force, which is adjusted by changing the tension of the spring 18.

О At the transition from one width of the workpiece to another, the bodies 5 and 17 are moved by rotating the screw bars 4, which, in turn, are driven by the flywheels and 8. By rotating the bead 8 to one side of the body 5 interacting with rod 4 will converge when rotated into the other.

0 Subject and sb; rete n and

Claims (2)

1. Device for roller machines for longitudinal rubber strip, for example, on a roll of a calender, containing a set of disk knives, of which are mounted on a sub-spring-loaded double-arm lever, rotated on the axis of the bracket fixed to the shaft, movable on from the knife setting mechanism to the specified cutting width, characterized in that, in order to increase the productivity and the exact installation of the knives in the rubber cutting process, the knife installation mechanism is made in the Id screw with left and right sections 5 threads of rods installed in parallel on both sides of the guide rod and carrying with it circular knives, which are mounted on cases, movable on screw rods, and their rotation from the drive by means of bevel gears. 2. The device according to claim 1, characterized in that, in order to accelerate the installation of the circular knives on the working course, go to the idle position, carrying the disk knife, shoulder of each 5 double shoulders - its lever is pivotally connected to the rod, the free horse of which interacts with the eccentric cam turning from the handle. / J VWWH: