SU700736A1 - Vibrator - Google Patents

Description

one

The invention relates to devices that provide vibroprocessing on shaking molding machines or similar machines with prepressing by optimally switching on the flow of working fluid.

Vibrating devices operating according to the principle of mass inertia of cylinder I are known.

However, such devices are quite complex, since they require the connection of special pulsator valves to them.

Known vibrator placed in the housing, which is a vibration table, resiliently loaded piston, the working chamber of which is connected to the pressure line and with a drain through a distribution 2.

However, in such a vibrator, the working fluid is introduced into the working chamber until the piston and the vibrating table collide. Because of this, there is a loss of energy that must be compensated by a large mass of piston.

The aim of the invention is to reduce the energy loss of the working environment.

This goal is achieved by the fact that the distribution body is made of two valve pairs, one of whose saddles associated with the pressure line is made in the housing and the other in the piston, and their shutoff valves are installed coaxially with the possibility of relative movement and are spring loaded into different the sides, one of which, blocking the saddle of the drain hole, is mounted in the housing with the possibility of joint movement with the piston and there are two stops on it that restrict their joint movement in both directions, and one of the stops s - the joint movement of the valve body with the piston.

FIG. 1 shows the vibrator when the piston starts to reverse; in fig. 2 - the same at the lower final position of the piston; in fig. 3 - the same at the moment of the piston moving upward before colliding it with the vibro rostol and blocked by the pressure line.

Claims (1)

In case 1 /, which is a vibrating table, there is a piston 2, which forms a working chamber 3 with the case. The vibrator distribution body consists of two coaxially located shut-off parts 4 and 5, loaded by spring 6 in different directions. The locking member 4 overlaps the saddle 7 connected to the drain opening 8 and is pressed against the piston by the spring 9 in such a way that in the area 10 limited by the stop 11 it can move together with the piston. The locking member 5 overlaps the saddle 12 associated with the pressure line 13, and can be mixed with respect to the locking member 4 in the area 14 bounded by the stops 11 and 15. The vibrator operates as follows. Working environment under pressure hearth. on the pressure line 13 through the open valve body 5 and entering the working chamber 3, pushes the piston 2 down. In this case, the locking element 4 blocks the drain hole 8 under the action of the spring 9 and moves together with the piston until the locking body 5 moved by the stops 11 passes through section 10 and does not block the saddle 12 Under the action of the pressure of the working medium the piston will continue downward movement until the valve body 4 opens the drain hole and there is a pressure drop in the working chamber. After that, a spring (not shown), acting on the piston from below, will cause it to change direction. When the piston moves upwards, the locking member 4, compressing the spring 9, begins joint movement with the piston. At this time, the locking member 5 under the action of the pressure of the working medium in the pressure line, which exceeds the force of the spring 6, is pressed to the bottom 12. After the locking member 4, moved by the piston, will pass part J3 f ff O ok 14, the stop 15 will shock the locking member 5 from the saddle 12 and the working medium will quickly enter the working chamber in the shortest possible time before the piston collides with the housing. The proposed vibrator allows a quick intake into the working chamber of the working medium practically at the moment of the collision of the piston and the housing, which reduces the energy loss of the working medium. Claims of the invention. A vibrator with an elastically loaded piston placed in the housing, whose working chamber is connected to the piped main and to the drain hole through a distribution body, characterized in that, in order to reduce the energy losses of the working medium, the distribution body is made of two-valve pairs. of the saddles of which, connected to the pressure line, are made in the housing, and the other in the piston, and their locking members are mounted coaxially with the possibility of relative movement and loaded with a spring in different The corons, one of which overlaps the saddle of the drain hole, is installed in the housing with the possibility of joint change with the piston and there are two stops on it that restrict their joint movement b both sides, and one of the stops ss joint movement of the valve with a piston. Sources of information taken into account in the examination 1. IB Matveev. Hydraulic drive machines of shock and vibration action. M ,, Mechanical Engineering, 1974, p. 174, fig. 90. 2, GDR Patent No. 82538, cl. 31 in 1 15/14, publ. 1969. / J It e 8 2 (put.3