SU425817A1 - MECHANOLOGICAL PRESS - Google Patents

Description

one

The invention relates to the field of engineering, more specifically to the design of presses.

A mechanohydraulic press is known, which contains a slider installed in the bed guides with a main cavity made therein and filled with energy, in which a plunger | p is placed, connected through a connecting rod to a crankshaft driven by an electric motor.

The aim of the invention is to increase the durability of the press assemblies and increase productivity.

This is achieved in that an additional annular cavity is made concentrically in the main slider, and the slider is provided with a rotatable bushing with radial through holes installed concentrically to the plunger in its main cavity, the radial through channels being provided in its walls that coincide with the radial channels bushings when turning the latter, the same internal cavity of the plunger is connected to an additional annular cavity through a safety valve.

The drawing shows the proposed press.

The press includes a frame 1 on which an electric motor is mounted, which is connected by a flexible coupling with a flywheel 2 located on the working shaft 3 placed in the frame 1,

and interacting by means of a connecting rod 4 and hollow with through windows of the plunger 5 with a slider 6 moving in the direction towards the base of the bed i.

The press also contains a rotary bushing 7 with through windows, a surrounding plunger 5) installed in a non-sliding bushing 8 of the slide and controlled by a cylinder 9, a valve 10, a safety mechanism

press from overload and connected by pipe 11 with internal cavities of the slide, filled with liquid agent 12, and balance transmitters 13 in the form of pneumatic cylinders holding the slide 6 in the upper position.

A motor mounted on the frame 1 (not shown in the drawing) rotates through a flexible coupling a flywheel 2, which imparts a rotational movement to the working shaft 3 connected to the flange 4 and

the plunger 5, interacting with the slider 6 as follows; when the slider 6 is dislocated in the extreme upper position under the action of the balancing elements 13, it moves back and forth

5 performs free pumping of the liquid agent 12 from the hollow cavity of the plunger 5 through the through-mounted windows of the plunger and the rotatable controlled sleeve 7 grasping it into the internal cavities of the slider

6 (in which a low pressure acts on the liquid agent, for example, 0.2-0.3 atm), where, respectively, the lifting and lowering of the liquid level occurs, and as a result there is no movement of the slide from the initial upper position. At the upper position of the crank of the working shaft 3, as a result of the action of the cylinder 9, the sleeve 7 rotates at a certain angle and thus closes the through windows of the plunger 5, and then when the crank rotates from the rotational movement of the flywheel 2 through the connecting rod 4, the plunger 5 and the liquid agent 12 , being in the closed volume of the hollow part of the plunger, the rotary sleeve and the slide 6, the latter is carried forward to the lowest position and the operation is performed.

Simultaneously with the movement of the slide 6, the moving parts of the balancers 13 move.

The return of the slider 6 to its extreme position is produced as a result of the vacuum in the hollow part of the plunger, as well as under the action of the balancers 13.

The synchronized joint operation of the controlled rotary sleeve 7 and the working shaft 3 is performed using, for example, a non-contact limit switch -BVC (not shown) instructing the cylinder 9 to rotate the sleeve 7 at the extreme upper position of the crank shaft 3.

Subject invention

A mechano-hydraulic press containing a slider installed in the bed guides with a main cavity made therein and filled with energy, which houses a plunger connected through a connecting rod to a crankshaft driven by an electric motor, in order to increase the durability of the press assemblies and increase productivity , in the slider concentric with the main core there is an additional annular cavity, and the slider is equipped with a rotatable sleeve installed in its main cavity at the center of the plunger

with through radial windows, while the plunger is made hollow and through its radial channels provided through the walls, coinciding with the radial channels of the sleeve when turning the latter, the inner cavity of the plunger is connected to an additional annular cavity through a safety valve.