SU551181A1 - Device for cross cutting elastic tube - Google Patents

Description

one

The invention relates to the production of parts for electro- and radio-aura structures and is intended for cutting elastic tubes, for example, fluoroplastic, polyethylene, vinyl chloride, into dimensional blanks.

A device for transverse cutting of an elastic tube is known, which comprises a tube feeding mechanism and a cutting knife, which cooperates with a supporting knife.

In this device, the tube is braked at the time of cutting, which reduces the quality of the cut ..

Closest to the invention is a device for transverse cutting of an elastic tube, which contains a disk mounted on a three-wheel drive for supplying the tube being cut and movable spring-loaded cut-off but ;; si, interacting with a support knife.

The known device is difficult to adapt when switching from one size of the cut tube to the other, it is necessary to replace the disk for feeding, driving the movement of the tube, copier and apjTHX nodes.

The purpose of the invention is to simplify the changeover of the device for cutting blanks of various lengths.

This is achieved by the fact that the cutting and supporting knives are mounted on both drive discs on the drive shaft, the cutting blades being made movable along the axis of the shaft, and the supporting knife is spring-loaded to the cutting edges of the cutting blades.

FIG. 1 shows the described device, top view; in fig. 2 - cutting unit of the device, in section.

Claims (1)

On the plate 1 of the device of the Ustakpevaya, a spacer 2 for the coil of elastic material, a tensioning mechanism 3, a cabinet 4 of electric controllers, a worm gear 5, a screw shaft of which is connected to the shaft of an electric motor 6. At one end of the output shaft of the gear 5, a cutting head 7 and at the other end - the flywheel B of the manual drive and the 9th rev counter, fixed on the stand Y. On the stand 1О. there is also a microswitch 11,. disconnecting motor 6. Tensioning mechanism 3 has a guide roller 12, a rubber roller 13 with a braking device 14, a spring-loaded roller 15 and a lever 16 with a roller D 7 for controlling the tube tension and disconnecting the motor using a microtransfer 18, in the case 19 of the cutting head 7 (Fig. 2 parallel to its axis are the pushers 20 with cutting knives 21 fixed on them, adjustable by screws 22 and 23, and rollers 24 constantly in contact with the end copier 25 fixedly mounted on the gear case 5 by springs 26. Push The spruce 20s are kept from being twisted with the keys 27. Cutting hooks of Dexter 7 are equipped with coupling halves 28 and 29 with end teeth for tightening the spring 30, pressing the supporting knife 31 with working surfaces to the cutting blades 21. On the front part, the cutting blades have cutting edges 32 and guides - protrusions 33; The supporting blade E1 is made in the form of a disk in which the working surfaces formed radial grooves 34 and are constantly in contact with the corresponding cutting blades 21. Between the cutting blades 21 and the supporting knife 31, an interchangeable size disk 35 is installed, yuschy role of the guide element and prolonged. The length of the cut off workpiece depends on the outer diameter of the disk 35. From the electric motor. 6 through the gear 5, rotation is transmitted to the cutting head 7. When turning the cutting head 7, the cutting knives 21 perform an axial movement from the azan-action of the rollers 24 mounted on the pushers 20 with the fixed face fSKpOM 25. In one revolution of the head 7, the tube body cuts to the depth several cutting knives 21, but not less than two, due to which a continuous circular feed of the elastic tube is carried out. In this case, the tube entering the cutting head. 7 from the coil, located on the support 2, through the tensioning mechanism 3, bends around a removable dimensional disk 35, on which a piece of workpieces occurs alternately. The number of blanks to be cut is controlled by a counter 9. Making the damping-guide element in the form of a replaceable size disk, the outer diameter of which determines the length of the tube blank between the supporting and cutting blades, makes it possible to significantly simplify and speed up the changeover of the device at different cutting lengths. To do this, it is enough to have a set of sized disks. The tests showed high performance and reliability of the device for cutting elastic tubes. Apparatus of the Invention A device for transverse cutting of an elastic tube containing a disc mounted on a drive shaft for supplying a cut tube and spring-loaded detachable skins movable from a copier interacting with a supporting knife, characterized in that, in order to simplify the changeover of the device for cutting blanks of various lengths, and the supporting knives are mounted. from both sides of the disc-on the drive shaft, the cutting blades being mounted movably along the axis of the shaft, and the supporting knife is spring-loaded to the cutting edges of the cutting blades.