SU810327A1 - Apparatus for hydromechanic pressing - Google Patents

Description

one

The invention relates to the processing of materials by pressure, and more specifically to devices for hydromechanical pressing of articles.

The known devices of similar purpose contain a container with a matrix and a press feeder moving in the cavity of the container, compressing the working fluid and simultaneously acting on the end of the workpiece, as well as a mechanism for filling the cavity of the container with working fluid, made in the form of a container mounted on the end of the container, communicating with the cavity of the container on the channel in the press stamp 1.

A disadvantage of such devices is the long-term cooling of a hot billet with cold liquid in the case of using a device for hot hydro-mechanical pressing.

It is also known a device for hot hydro-mechanical pressing, in which unheated liquid is encapsulated and introduced into the container cavity following the hot workpiece, at the beginning of pressing the casing is destroyed and the liquid fills container 2.

The disadvantage of this device is low productivity due to

time spent laying the shells with liquid in a container.

The purpose of the invention is to increase productivity by automatically supplying the working fluid to the gap between the workpiece and the container immediately at the moment of the start of deformation.

The goal is achieved by the fact that in a known device containing a container with a matrix installed therein, moving in the container cavity with a ram, the filling mechanism is designed as a cylinder ram fixed at the working end with a spring-return piston installed in a reciprocating movement at the same time in the wall of the cylinder near the ram are made through holes that communicate the cavity

cylinder with a cavity container.

The drawing shows the proposed device, the cut.

The device consists of a matrix 1 and a container 2 supported on it. Inside

the container is placed a press stamp 3 with a needle 4 (for pressing hollow articles). A cylinder 5 is fixed on the working end of the press stamp 3 with the piston 6 mounted therein with the possibility of reciprocating movement. The piston 6 is pressed out of the end of the press stamp by the spring 7. There are holes 8 in the wall of the cylinder 5 near the press stamp, which connect the cylinder 9 with container cavity.

The device works as follows. When removing the press stamp 3 from the container 2, the piston 6 is pressed

7, in the extreme position and in the cylinder 5, a cavity 9 is formed. A working fluid is filled into the resulting cavity 9. Refueling is carried out either through a special fitting through a press stamp (not shown), or through one of the holes

8 hydraulic cylinders 5. Then, the workpiece 10 is placed in the container 2 and the ram 3 is inserted. When the press numbered 3 is moved in the container 2, the slit 6 will meet with

The blank 10 and, having overcome the resistance 7, will begin to move in the hydro cylinder 5. When moving the pistons 6 in the hydraulic cylinder. 5, the working fluid from the cavity 9 through the opening 8 is squeezed out into the gap X1 between the hydraulic cylinder and the container and completely fills the cavity of the container. Upon further movement of the press 3, the working fluid creates the necessary pressure, and the process of hydro-mechanical pressing is carried out. Since the workpiece during the preparatory operations is not in contact with the working fluid, the time of their contact and the amount of liquid coming into contact with the workpiece during pressing is not long.

The use of the proposed device for hydromechanical pressing in comparison with the known devices allows one to automate the process of hydraulic pressing both in cold and in heat and hot conditions, which leads to an increase in the productivity of the device.

Claims (2)

Invention Formula A device for hydromechanical pressing, comprising a container with a matrix installed therein, non-moving in the container cavity, a press stamp, and the mechanism for filling the container cavity with a working fluid, characterized in that, in order to increase productivity, the filling mechanism is designed as mounted on the working end of the cylinder press stamp with a spring loaded piston mounted in it with the possibility of reciprocating movement, with the B wall of the cylinder being press shtamp made through holes that indicate the cavity of the cylinder with the cavity of the container. Sources of information taken into account in the examination 1- USSR Author's Certificate No. 264135, cl. At 21J 5/04, dated 1/29/68. 2. USSR author's certificate No. 211282, cl. At 21J 5/04, dated 08.02.68.