SU1355328A1 - Arrangement for cutting and bending - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in mechanical engineering in the manufacture of spark plugs.

The purpose of the invention is to improve the quality of the products obtained.

Fig, 1 shows the proposed device, a general view; in fig. 2 - the same, top view; in fig. 3 shows section A-A in FIG. one; figure 4 - section bb in fig. 2; in fig. 5 - knife, cut; in fig. 6 - the same, top view; in fig. 7 - knives (at the time of the end of cutting); in fig. 8 - the same (at the time of pre-bending; the knives move together to the left); in fig. 9 - the same (in the final moment of the final bending).

The device for cutting and bending contains a frame 1 with a body 2, on which guide 3, top 4 and bottom 5 adjusting bars are installed, adjusting screws 6, clamping screws 7, knives 8 and 9, and the knife 9 has a lever on axis 10 11 with the pressure screw 12 and the roller 13 rotating on the axis 14. The pressure screw 12 through the gasket 15 interacts with the elastic liner 16. The knife 8 through the gasket 15 interacts with the elastic liner 16. The knife 8 through the adjusting screw 17, locked with a nut 18, eye 19 and an earring 20 is connected to the lever 21. The knife 9 through the adjusting screw 22, the control nut 23 and the eye 24 are connected to the lever 25 swinging on the axis 26 fixedly mounted on the frame 1 of the bracket 27. The lever 21 interacts with the cracker 28 installed in its groove and connected by the axis 29 to the rod 30, and the lever 25 through the roller 31 interacts by means of a tension spring 3.2 with a cam 33 mounted also on the rod 30. In addition, in the case 2, a cradle 34, a plate 35, a spring-loaded ejector 36 driven by a cam 37, preloaded spring 38 and mounted on the rod 30 are mounted. power cylinder piston 39

The device works as follows.

The workpiece (candle) 40 is mounted on the cradle 34 of the housing 2 so that the central electrode abuts against the plate 35 and the side electrode 6 is in the gap between

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knives 8 and 9. After the compressed air is injected into the left cavity of the pneumatic cylinder 39, the rod 30 moves to the right, and the knives 8 and 9 begin to move towards one another. During movement, the roller 31 goes to the platform i of the cam 33, which causes the knife 9 to stop at when the cutting edge of the knife 9 comes into contact with the side electrode 6 of the candle 40. The knife 8 continues its movement and cuts off the excess material of the side electrode 6 of the candle 40, after which, at the transition of the hinge of the pin 21, the center line connecting the link with the eyelet 20 19, knife 8 changes its movement in the opposite movement which continues until the e scharnirom upper extreme position. At the same time, due to the lever 21 of the cam 33 aligned with the turn of the cam 33, the knife 9 performs a joint movement that is simultaneous and unidirectional with the knife 8 to the left, and the knife 9 with a radial surface and performs preliminary bending of the side electrode, and then roller 13 - the final bending . The angle of rotation of the lever 21 is selected constructively, based on the required total travel in both directions of the knife 8. When the rod 30 moves to the initial position, the candle 40 is removed by the ejector 36 from the plate 35 and the cradle 34. After removing the candle 40 from the cradle 34, the device is ready for processing the next products.

The design and angle of rotation of the lever 21 should provide the lower extreme position of the hinge e below, and the upper extreme position of the center line connecting the axis of the H of the lever 21 with the axis of the eyelet 19 and the earring 20. This condition is necessary to ensure the reciprocating movement of the knife 8. .

As the rod 30 moves to the right, the lever 21 rotates counterclockwise, and the hinge e rises from the lowest position, the knife 8 moves to the right. At the moment when the hinge e is located on the intercenter line connecting the axis w, the knife 8 is in its extreme right position. A further turn of the lever 21 counterclockwise and moving the hinge e in the direction of its extreme upper position causes the backward movement of the knife 8 to the left, which continues before joining the hinge e to the highest position. The magnitude of the stroke rod. 30 is matched to the required angle of rotation of the lever 21.I

Claims (1)

Invention Formula A device for cutting and bending, comprising a base, a cutting mechanism in the form of two knives and a drive for moving them and a bending mechanism, including a roller, characterized in that, in order to increase the quality of the floor 5328. . knives are installed with the possibility of counter-reciprocating movement, the bending mechanism is equipped with a preliminary bending unit, made in the form of a radius transition on the knife, swinging the lever with an adjusting element installed in it and an elastic insert fixed on the knife with the interaction with the adjusting element, while the roller is fixed on the specified lever. X 2120 3 IS 17 IS I 39 T 28 M 30 . star 37 is 33 26, e Fi.g.1 and  Put.2 W . | P" and I m / and I " "about "Ha st sg and t eight eleven 0 Fy fpuz.8 eight 13 1 eleven 35 J4 9g.9