SU1594331A1 - Adjustable-indling crank-and-slide mechanism - Google Patents

Abstract

The invention relates to crank-slider converters of continuous rotational movement in reciprocating with an adjustable stop and will find application in various automatic machines. The purpose of the invention is to increase the reliability of the mechanism due to the additional fixation of the slave link during the performance of the operating cycle. In the initial position, the pressure in the control cylinder is absent, and the sliders 3 and 8, under the action of their springs 4 and 9, are in a position where the axes of rotation of the crank 5 and the rocker arm are aligned. The rotation of the crank 5 is converted into an oscillating movement of the rocker arm, and the driven slider 3 remains stationary. The mechanism works in idle mode. To put it into operation without stopping the mechanism, pressure is applied to the cylinder, which clamps the disk between the protrusion and the stop. The beam stops and, together with the sliders 3 and 8, forms a single rigid system. The mechanism turns into a slider crank, in which continuous rotation of the crank 5 is converted into a reciprocating movement of the driven slider 3. The mechanism goes into operating mode, the duration of which is determined by the duration of the pressure applied to the cylinder 13. The mechanism can also operate in a pulsed mode. 4 il.

Description

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reliability of the mechanism due to the additional fixation of the slave link during the performance of the operating cycle. In the initial position, the pressure in the control cylinder is absent, and the sliders 3 and 8, under the action of their springs, are in a position where the axes of rotation of the crank 5 and the rocker arm are aligned. The rotation of crank 5 is transformed into cola: the balance movement of the rocker arm and the driven slider 3 remain motionless. The mechanism} works in idle mode. To put into operation without stopping

Mechanism serves pressure in the cylinder, which clamps the disk between the protrusion and the stop. The beam stops and, together with the sliders 3 and 8, forms a single rigid system. The mechanism becomes a slider, in which the continuous rotation of the crank 5 is converted into a reciprocating movement of the driven slider 3. The mechanism goes into an operating mode, the duration of which is determined

the duration of the pressure supply to the cylinder. The mechanism can operate in a pulsed mode. 4 il.

; The invention relates to machine building: namely, to slider crank pre-; formers continuous rotational

movement in reciprocating with forks of adjustable duration, and can be used in various automatic machines.

A: The purpose of the invention is to increase the reliability of the mechanism due to the additional fixation of the slave link during the execution of the operating cycle.

FIG. 1 shows the kinematic scheme of the mechanism; in fig. 2 - section AA; in fig. one; in fig. 3 is a view B in FIG. one; FIG. 4 - additional device: fixing the slave link.

The mechanism includes a base 1 with a straight-line guide 2, mounted in guide 2, a driven slider 3, spring-loaded to the base 1 by a spring 4, and a crank 5 installed at the base 1, receiving continuous rotation from a drive (not shown), for example, through a gear wheel 6

In the driven slider 3 there is a straight guide 7, perpendicular to the guide 2 of the base 1. In the guide 7 there is an intermediate slider 8, which is spring-loaded to the slider 3 by an elastic element 9. In the intermediate slider 8 there is a rocker arm 10, hingedly connected Krivoshchip 5 connecting rod 11. In the base 1 there is a guide protrusion 12 parallel to the guide 2. On the base 1 there is a pneumatic or hydraulic cylinder 13 controlling the intermediate slider 8, and on the cylinder rod there is a movable abutment 14 parallel to the guide extension PU 12 and the spring-biased thereto by springs 15. At the free end of the rocker shaft 10 is fixed disc 16 with two parallel Dysko 17 designed for periodic engagement with stop 14 and the protrusion 12.

0 The mechanism works as follows. In the initial position, the pressure in the cylinder 13 is absent, the stop 14 by the springs 15 is retracted from the guide protrusion 12, the intermediate slider 8 is pressed by the spring 9 to the extreme left position inside the guide 7, and the driven slider by spring 4 is pressed to the im. t.

With this position, the sliders 3 and 8 of the axis of rotation of the crankshaft 5 and the rocker arm 10 are aligned, therefore the rotation of the crank 5 through the Q slider 11 is converted to oscillations of the rocker arm 10 while maintaining the immobility of the driven slider 3. The disk 16 rotates freely between the protrusion 12 and the stop 14 The mechanism works in idle mode.

- To bring the driven slide 3 into motion, without stopping the mechanism, pressure is applied to the cylinder 13, and its sleeve, overcoming the resistance of the springs 15, moves the stop 14 in the direction of the guide lug 12. The stop 14 enters

0 in cooperation with the corresponding bald disk 16 and displaces it together with the shaft of the rocker arm 10 and the intermediate slider 8 towards the protrusion 12. The disk 16 with the second bald presses against the protrusion 12 and the fishing rod 10 stops, while the driven slider 3, the intermediate slider 8 and the beam W form a single rigid system. The mechanism turns into a slider-vane, in which the continuous rotation of the crank 5 is converted into a reciprocating movement of the driven slider 3, while the disk 16 moves along the protrusion 12 and the stop 14, as along the guides. The mechanism enters an operating mode, the duration of which is determined by the duration of the supply of pressure in cylinder 5.

To transfer the mechanism to idle mode, the pressure in the cylinder 13 is blocked, and all links under the action of

their springs return to their original position.

The mechanism can operate in a cyclic mode, the frequency of which is determined by the frequency of the supply of pressure in the cylinder 13.

Claims (1)

Invention Formula Craneship-slider mechanism with an adjustable stop, comprising a base with a rectilinear guide, a slave slider installed in it, a curved spike installed at the base, an intermediate slider with an elastic element, a rocker arm installed in the intermediate slider, a rod that is hinged to the curvature and rocker and pneumatic or hydraulic cylinder controlling the intermediate slider, characterized in that, in order to increase reliability, the driven slider is spring-loaded to the base and in it is made a straight guide an intermediate slider base, an intermediate slider with its elastic element is mounted in the follower slider guide, a protrusion is basically made, the plane of which is parallel to the directional base, and the mechanism is equipped with a movable stop fixed to the cylinder rod and spring-loaded to it. and a disk with two parallel tracks, designed to periodically interact with the protrusion and the stop, mounted on the free end of the feed shaft. BUT-/