SU133162A1 - Hydraulic Press - Google Patents

Description

A hydraulic press for cutting, for example, leather and its substitutes, consisting of a frame made together with a table serving for folding material, a rolling pin with a hammer, moving reciprocatingly in vertical guides of the frame, hydraulic drive and an electrical circuit for controlling the hydraulic drive, is known .

The described press differs from the known simpler design, which is achieved by using in the hydraulic system a single-stage vane pump with an energy accumulator in the form of a flywheel mounted on the pump drive shaft. The pump, in turn, is connected by means of the oil pipe directly to the working cylinder of the press, moving down along with the rolling pin and hammer, the spool mine, which creates the most favorable conditions for fluid movement when the press is turned on for a working stroke and a higher efficiency is achieved. hydraulic systems.

FIG. 1 shows the proposed press; in fig. 2- hydraulic drive.

The press consists of the following main components: the bed 1, made together with the table 2, the rolling pin 3, the slave cylinder 4, the cantilever hammer 5, the hydraulic actuator 6 and the electric circuit for controlling the hydraulic drive.

A special nut 7 with a hollow rod 8 screwed into it is rigidly fixed in the lower part of the bed coaxially with a rolling pin and a cylinder. The hydraulic actuator (Fig-2) is placed on the lid of the oil tank 9 and, if necessary, can be pulled out together with the tank from the press frame. The hydraulic pump 10 is driven by the electric motor 11 through the half couplings 12 and 13, which are simultaneously the flywheel of the pump drive shaft.

No. 133162-- 2 By means of the oil lines 14 and 15, the pump is directly connected to the working cylinder, moving downwards with the rolling pin and the drummer. Oil is supplied to the working cavity of the cylinder directly from the pump through the oil pipe connected to the internal cavity of the nut and a hollow brush having lateral holes.

A safety valve 16 is connected to the oil line connecting the pump to the cylinder, which is also a working spool.

The safety valve is controlled by the caller 17 (see section B and B), the stem / 5 of which, when the press is turned on, the working stroke is moved by the electromagnet 19. The slide valve 18 is returned to its original position by the injector 20.

The cutting of parts on the proposed press can be carried out on both conductive and non-conductive cutting plates. The transfer of the control circuit from one operating mode to another is carried out by switching toggle switches installed on the electrical equipment panel.

Subject invention

Claims (2)

1. A hydraulic press for cutting, for example, leather and its substitutes, consisting of a bed made at the same time as a table serving for unfolding the material moving reciprocally in the vertical guide beds of the rolling pin with a hammer, hydraulic drive and an electric circuit for controlling the latter, characterized in that, in order to simplify the design of the press, the pump is connected by means of an oil pipe directly to a working cylinder moving downwards with a rolling pin and a hammer. 2. The press according to claim 1, characterized in that, in order to reduce the required power of the electric motor, the drive shaft of the pump is provided with a flywheel fixed on it.