SU1148802A1 - Hydraulic press - Google Patents

Abstract

HYDRAULIC PRESS containing a frame, in the guide columns of which a movable plate is mounted, as well as a plate drive in the form of a working ..-., - SCA and power cylinders mounted coaxially in a common case mounted on the frame, and the working cylinder rod connected to the movable plate, and in the rod of the power cylinder there is made a benthole and mounted a valve separating the cavities of the working and power cylinders, characterized in that, in order to expand the technological capabilities of the press by increasing the force of the preliminary closing the working parts, the press is equipped with an additional cylinder, made in the form of a cylindrical body, rigidly connected with the movable plate and connected with its inner surface with the outer surface of the body of the worker i and the power cylinder, as well as with a seal placed on the matching portion of the core cylinders.

Description

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The invention relates to pressing equipment for the processing of materials by pressure and can be used to create presses that require an increased pre-closing force of the working parts, for example, when creating floor presses for non-metallic sheet materials. .

The aim of the invention is to expand the technological capabilities of the press by increasing the force of preliminary closing of the working parts.

FIG. 1 shows a press, a general view; in fig. 2 — node I in FIG. I; in fig. 3 shows section A-A in FIG. 2

The press frame contains lower 1 and upper 2 fixed plates, interconnected by columns 3. Columns 3 serve as guides for movable plate 4, the drive of which is made in the form of coaxial upper (working) and lower (power) cylinders. Both cylinders are made in obchem case 5, mounted on the frame. The piston rod 6 of the power cylinder is made with a hole in which a valve 7 is installed that separates the cavities of the working and power cylinders. The piston rod 8 of the working cylinder is connected with the movable plate 4, to which the cylindrical body 9 is fixed, coupled by its internal surface with the external surface of the cylinder body 5. The mating is performed on the surface of the cover 10 of the housing 5 (Fig. 1). A seal is mounted on the interface.

Thus, the housing 9 and the lid 5 form an additional cylinder with a working cavity 11. The working plates 12 of the press have their heating and holding devices in the open position (not shown).

The source material 13 is loaded onto the working plates. Nipple Ni 15 is intended for supplying compressed air during preliminary closing of the plates, nipple 16 for supplying compressed air during material pressing, and nipple 17 for supplying compressed air when lowering the plates.

The press works as follows. Plates are loaded onto plates 12.

About material 13. Compressed air is simultaneously supplied to nipples 14 and 15, and nipples 16 and 17 communicate with the atmosphere. The working fluid is displaced through the hole in the piston rod 6, opens the valve 7 and acts on the piston rod 8, which raises the movable plate 3. The plates are preliminary closed. The compressed air is then supplied to nipple 16, and nipple 14, 15 and 17. communicate with the atmosphere. The piston rod 6 is raised, while the valve 7

0 closes the hole in the piston rod 6. Due to the multiplication of the piston cavity of the working cylinder, high pressure rises, the final pressing takes place. After a certain exposure

compressed air is supplied under pressure to nipple 17, and nipple 14, 15 and 16 communicate with the atmosphere, piston rods 8 and 6 are lowered.

In the extreme lower position of the piston 6, the valve 7 rests on the bottom of the working cylinder and opens. The fluid flows from the working cylinder to the rod end of the power cylinder. There is an open press. Then the cycle repeats.

The economic effect from the introduction of the proposed invention is provided

by reducing the operating costs of the press.

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figure 1

1148802 7

FIG. 2

Claims (1)

A HYDRAULIC PRESS, containing a bed, in the guide columns of which a movable plate is mounted, as well as a plate drive in the form of a working and power cylinders mounted coaxially in a common housing mounted on the bed, and the piston rod is connected to the movable plate ^ and in the power rod a cylinder has been made a bore and a valve has been mounted separating the cavities of the working and power cylinders, characterized in that, in order to expand the technological capabilities of the press by increasing the effort of preliminary closing of the working of their parts, the press is equipped with an additional cylinder made in the form of a cylindrical body rigidly connected to the movable plate and conjugated by its inner surface to the outer surface of the working and power cylinder housing, as well as a seal placed on the mating portion of the cylinder bodies.