RU2092264C1 - Apparatus for measure cutting of elastic materials such as wire - Google Patents

Abstract

FIELD: equipment for measure cutting of continuously moving elastic materials such as wire. SUBSTANCE: apparatus includes stationary cutter in the form of carrying plate with cutting edge along bottom of guiding and centering groove and movable cutter in the form of spring-loaded rocking slide being one-piece with guiding follower and crescent-like cutting edge. Rear face of said crescent-like cutting edge is also sharpened along curvilinear line. EFFECT: simplified design, easy maintenance for readjusting cutting apparatus. 3 dwg

Description

 The invention relates to techniques for measuring cutting of wire, cable, plastic tubes, cord bundles, rubber cords of various profiles and the like, continuously moving long materials and can be used in engineering, electrical, chemical, textile, construction and other industries, where it is used industrial cutting technology.

 Known devices for continuous cutting of bar (ed. St. N 1079336, MKI B 21 F 11/00, 1982), sheet or strip elastic materials (G. M. Rosen and others. Mechanization and automation of sheet stamping in the automotive industry. M. Engineering , 1983, p. 75 prototype) containing means for the continuous supply of material, a loop-forming mechanism that allows elastic bending to compensate for the delay in the supply of material at the time of the cut, a reading device that commands the segment, and a cutting unit.

 The disadvantage of this device is the difficulty of changing to a new size or type of cut material.

 The purpose of the invention is to simplify the device and expand its technological capabilities for readjustment by combining a number of functional and structural elements of the cutting unit.

 In FIG. 1 shows a device for dimensional cutting, General view with a partial section; in FIG. 2 is a view along arrow A in FIG. one; in FIG. 3 section BB in FIG. 2.

A device for measuring cutting wires and similar elastic materials comprises means for continuously feeding material in the form of drive rolls 1, a looper 2, a cutting unit 3 interlocked with a looper 2, a reader (not shown in the drawings) and a drive of the movable knife 4 through the hinge 5 and traction 6. The looper 2 includes a table 7, guiding cheeks 8 and 9, swinging on the axis 10 of the suppressor 11 and an emphasis 12 to limit the maximum stroke of the suppressor. The cutting unit 3 has a fixed knife 13, made in the form of a rectangular plate polished on both sides with a groove 14, the cylindrical bottom surface of which forms a radial cutting edge 16 with the surface 15 of the plate 13. The width of the groove 14 is chosen slightly larger than the width of any of a number of cut profiles grouped according to the possibility of cutting without readjustment of the cutting unit. The cutting edge 16 is located below the level of the table 7 by a value of Δ 0.1-0.6 mm, which is determined empirically, and due to its radius, serves simultaneously as a means of centering the profile supplied to the cutting unit. The plate 13 with the surface 17 is adjacent to the table 7 and is a supporting structure for the formation of plane-parallel guides together with the surface 18 of the plate 19 due to the installation of the spacer bars 20 and fixing bolts 21. A movable knife 4 is made between the guide surfaces 15 and 18, made in the form of a flat slide having a crescent-shaped cutting edge 22 on one side with a radius sharpening 23 on the rear face and on the other a guiding copier 24 interacting with the support roller 25 with the participation of the drive rod 6 through the hinge 5 and so forth dinner stretching 26. The values of the angles of the rear a and front b sharpening are selected depending on the elastic and strength properties of the materials being cut, and always a + β 90 ^o .

 Device for measuring cutting works as follows.

 The material 27 to be cut is fed by rolls 1 on the table 7 between the cheeks 8 and 9 under the loop suppressor 11 through the cutting unit 3. At the moment of receipt of a signal from the reader to turn on the drive, the rod 6 moves downward along with the movable knife 4, which interacts with the surface a copier 24 with a thrust roller 25, makes the cutting edge 22 move along a complex flat path, as when working with a sickle, as a result of which there is not just cutting material, namely a segment with the movement of the cutting blade along the edge of the grinding and. This improves the quality of the cut surface, smoothes the plot of the forces during cutting and maintains the sharpness of the cutting edges of both knives longer. During the completion of the cut, the material 27 continues to be fed by the rolls 1, but, resting against the knife 4, forms an elastic loop located in the space between the table 7, the suppressor 11 and the side cheeks 8 and 9. After the cutting is completed, the end face of the moving material slides along a curved surface 23 and the material is straightened, and the spring 26 returns the knife 4 to its original position, while the sickle sharpening of the knife and the radius along the rear face 23 facilitates the elastic gathering of the material.

 Next, the cycle segments is repeated. The device can also work in non-automatic mode.

 The use of the invention allows to simplify the design and maintenance of the device and increase versatility with respect to various forms and profiles or types of cut material without readjustment.

Claims (1)

 A device for measuring cutting of wire and similar elastic materials, comprising means for continuous supply of material, a loop forming mechanism, a reader and a guillotine-type cutting unit, characterized in that the fixed knife is made in the form of a carrier plate with a cutting edge along the bottom of the guide-centering groove, and movable is a spring-loaded swinging slider made in one piece with a guide copier and a sickle-shaped cutting edge, which also has a curved sharpening along the rear face.

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