SU1523393A1 - Screw press - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to the structures of screw presses. The purpose of the invention is to simplify the design and reduce the size of the press. The screw press contains a slider 4 mounted in the guides 3 of the bed 1, connected to the screw 5, at the end of which a flywheel 6 is fixed. The nut 2 fixed in the bed 1 is connected to the screw 5 by a non-self-braking thread. The power drive of the slide is made in the form of sliders 8 arranged in guide beds 1, connected by connecting rods 10 to the crankshaft 9. The crankshaft 9 is driven from the flywheel 11 with the clutch 12. In the sliders 8 there is a groove of length L = R + D, where R is the radius of the crankshaft crankshaft 9, and D is the diameter of the pins 14 mounted on the slider 4. The pins 14 enter the slots of the sliders 8. The crawlers 8 also have return cylinders mounted that can interact with the pins 14. When the clutch 12 is engaged, the movement from the cranked shaft 9 is transmitted by connecting rods to 10 rompers 8. Impact and on the trunnion 14, the sliders accelerate the slider 4, screw 5 and the flywheel 6 to maximum speeds by the moment of rotation of the crankshaft by an angle close to 85 °. Further, the pins 14 are moved along the groove of the sliders 8. The slider 4 performs the work of deformation. During the return stroke, the sliders 8 raise the slide 4 through the pins 14, and the return cylinders move the pins 14 along the grooves to the initial position. 2 Il.

Description

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The invention relates to mechanical engineering, namely to the structures of screw presses.

The purpose of the invention is to simplify the design and reduce the size.

FIG. 1 shows a screw press layout; in fig. 2 is a view A of FIG. one.

The screw press contains frame 1, in which nut 2 is fixed. In direction 3 of frame 1, the axle 14 is mounted halfway through the entire length of groove 15 of the sliders 8. The forging is deformed (not shown). After punching, the raising of the slider 4 by the crank mechanism is also carried out through the pins 14, which rest on the rods 18. By the time when the angle of rotation of the crankshaft 9 is about 230 °, the air or liquid is fed into the lower part of the return cylinders.

The zun 4 is connected with a screw 5 articulated by pistons 17, which move the pins 14 non-braking splines with nut 2. along the groove 15 of the slider 8 upwards. When the crankshaft reaches an angle of 360 °, clutch 12 is turned off, brakes 13 are engaged.

20

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At the end of the screw 5, the flywheel 6 is fastened. The power drive is made in the form of 7 sliders 8 placed in guides with a crankshaft-paddle mechanism consisting of the crankshaft 9. Air supply or fluid in the shaft 9 and connecting rods 10. At one end the rod end of the return cylinder 16 of the crankshaft 9 is installed flywheel 11

with clutch 12, on the other - brake 13. On the slider 4, the trunnions 14 are rigidly fixed, placed in the longitudinal grooves 15, made in the sliders 8. Also, the return cylinders 16 with the pistons 17 and the rods 18 are mounted in the sliders. D, where R is the radius of the crankshaft crank; D-diameter pins. Press

it is equipped with a brake 19 screws 5, mechanism.m 25 xOv with one impact of stamps. 20 adjusting the interstitial space-economic effect when introducing isov 20 and buffer 21.

The press works as follows.

In the initial position, the slider 8 is in the extreme upper position and the trunnion 14 of the slider 4 is in contact with the upper edge of the groove 15 in the slider 8. When the clutch 12 is activated and the brakes 13 and 19 are simultaneously disconnected from the electro-screw press containing the motor the flywheel 11 is driven into the slider rotated into the bed guides, the crankshaft 9 of the crankshaft 9. The connecting rods 10 through the screw connected to the slider, the articulated non-slider 8 and the trunnions 14 transmit movement of the self-braking thread with the fixed slider 4. When the slider 4 moves, nny him screw 5 is also moved downward. Since the screw 5 is articulated with the fixed nut 2 by a non-braking thread, it unwinds together with the flywheel 6 fixed on it. When the crankshaft 9 is rotated by an angle close to 85 °, the sliders 8 gain the maximum speed, which decreases with further rotation of the crank shaft. From this point on, the half-zune and are placed in the said grooves, the suction 4 moves evenly accelerated downwards, and the bolt-on cylinders mounted in the slideway 14 move along the groove 15 of the creeper njCK 8. By the time of punching, the moving parts acquire the greatest kinetic translational and rotational energy

and 19, stopping slider 4 and cranked

pistons 17 return to their lowest position.

For the press, it is necessary that the length of the groove 15 should be L R- | -D. This size of the groove 15 ensures that the high speed of the slider 4 is achieved by the time of punching and eliminates punch 14 impact on the upper edge of the groove 15 of the sliders 8 at the maximum reflection coefficient, t . at

The shaving is achieved by simplifying the design and reducing the size of the pressing unit, since its hydraulic drive is eliminated.

Claims (1)

Invention Formula 40 in the frame by a nut, rigidly connected to the screw flywheel, a power drive and return cylinders, characterized in that, in order to simplify the design and reduce the envelope, the power drive is made in the form of cams placed in the bed frame guides with a crank-connecting rod mechanism and the flywheel and trunnions, in the sliders are made longitudinal grooves, the trunnions are fixed on the shelves with the ability to interact with the trunnions, the dimensions of the grooves are determined by , movement. The pistons 17 are at the extreme 50 where L is the length of the groove; lower position relative to the return-r. - radius of the crank; cylinders 16, providing those sa.mymD- diameter trunnions. the possibility of the pins 14 to pass along the entire length of the groove 15 of the sliders 8. Forgings are deformed (not shown). After punching, the raising of the slider 4 by the crank mechanism is also carried out through the pins 14, which rest on the rods 18. By the time when the angle of rotation of the crankshaft 9 is about 230 °, the air or liquid is fed into the lower part of the return cylinders.  the pistons 17, which move the pins 14 along the groove 15 of the crawlers 8 upwards. When the crankshaft reaches an angle of 360 °, clutch 12 is turned off, brakes 13 are engaged.  shaft 9. Air or fluid supply to the rod end of the return cylinder 16 and 19, stopping slider 4 and cranked shaft 9. Air or fluid supply to the rod end of the return cylinder 16 xOv a single collision of stamps. The economic effect of the introduction of the piston 17 is returned to the lowest position. For the press, it is necessary that the length of the groove 15 should be L R- | -D. This size of the groove 15 ensures that the high speed of the slider 4 is achieved by the time of punching and eliminates punch 14 impact on the upper edge of the groove 15 of the sliders 8 at the maximum reflection coefficient, t . at xOv a single collision of stamps. The economic effect of the introduction of the Screw Press, containing a slide mounted in the bed guide, a screw connected to the slide, a non-self-braking articulated thread with a fixed zune and placed in the aforementioned grooves, return cylinders mounted in a slide The shaving is achieved by simplifying the design and reducing the size of the pressing unit, since its hydraulic drive is eliminated. Invention Formula  A screw press containing a slider mounted in the bed guides, a screw connected to the slider, an articulated non-self-braking thread with a fixed zune and placed in the said slots, the return cylinders are mounted in a slider in the frame by a nut, rigidly connected to the screw flywheel, a power drive and return cylinders, characterized in that, in order to simplify the design and reduce the envelope, the power drive is made in the form of cams placed in the bed frame guides with a crank-connecting rod mechanism and flywheel and trunnion, in the slider longitudinal grooves are made, the trunnions are fixed to the floor. A screw press containing a slider mounted in the guide beds, a screw connected to the slider, an articulated non-self-braking thread with a fixed zune and placed in the mentioned mentioned grooves VRÁTNA WHO-cylinders mounted in polzush- with the ability to interact with the trunnions, the dimensions of the grooves are determined by the ratio , View/ 78 Phi. 2