SU1673474A1 - Protection enclosure for a forging press - Google Patents

Abstract

The invention relates to press-forging equipment, in particular, to the design of devices for fencing press working areas. The purpose of the invention is to increase reliability. To raise the protective screen 1, the compressed air is supplied to the pneumatic cylinders 2, 9 and 10. The rod 11 of the pneumatic cylinder 9, compressing the spring 16, leads out of the window of the guide 5 attached to the frame, the finger 8, which is spring-loaded relative to the screen 1. The rod 11 of the pneumatic cylinder 10, compressed the spring 16 exits the guide window. The rod 4 of the pneumatic cylinder 2 raises the screen 1 and in its upper position the finger 8 enters the previously freed window. The screen is lowered in reverse order. 2 hp f-ly, 4 ill.

Description

The claim of pt 1enie relates to mechanical engineering, in particular to the design of forging and pressing equipment.

The purpose of the invention is to increase reliability.

FIG. 1 shows the device, a general view; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one; in fig. 4 - section bb In Fig, 1,

The device contains a protective screen 1. a power pneumatic cylinder 2 of one-sided action, the movable element of which in the form of a piston 3 with a rod 4 is connected by means of the latter with a protective screen 1, a guide pair, the element 5 of which is fixed on the press frame, and , the limit switch for controlling the position of the protective screen 1 (not shown) associated with the press control system, the latches of the extreme positions of the protective screen 1, each in the form of a finger 8 spring-loaded with respect to the screen 1 and 8 e connected to the pneumatic control system motsilindry 9 and 10 the unlocking finger 8 with the piston rods 11 in E.

Through windows 12 are made in the element 5 of the guides.

The device also contains a choke 13 with a check valve, connected to pneumatic cylinders 2.9 and 10 and pneumatic valve 14, and an emphasis 15 connected to the piston 3, while the latter is made with a diameter smaller than the internal diameter of the pneumatic cylinder 2. In pneumatic cylinders 9 and 10 installed spring 16.

The device works as follows.

When switching the pneumatic valve 14 from the line, air enters the pneumatic cylinder 9, the piston-rod 11 of which, compressing the spring 16, removes a finger from the window 12 of the guide element 5. At the same time, compressed air enters the pneumatic cylinder 10, the piston-rod 11 of which, also compressing the spring 16, leaves the corresponding window 12, and into the pneumatic cylinder 2, the rod 4 of which raises the protective screen 1 until the corresponding finger 8 under the action of the spring 7 does not enter window 12, then the limit switch controlling the position of the protective screen 1 is activated, the press is ready for operation.

To lower the screen 1, the pneumatic valve 14 is switched, the air from the pneumatic cylinder 10 goes to the atmosphere and the spring 16 moves its rod 11, the pin 8 leaves the window 12, and from the pneumatic cylinder 9 the air also goes to the atmosphere and its spring

16 removes its rod 11 from the window 12. At the same time, the air from the pneumatic cylinder 2 enters the throttle 13, which controls the smoothness of lowering the screen 1. When the latter reaches the lower position,

the lower finger 8 enters the window 12, the stop screen 1 relative to the element 5 of the guide. The presence of the stop 15, made of a significantly smaller diameter than the piston 3, provides a smooth lift

screen 1, while taking into account the corresponding performance on the diameter of the piston 3 compared with the internal diameter of the pneumatic cylinder 2.

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Claims (3)

1. Device for protecting the worker areas of the press containing a protective screen one-way power cylinder, the movable element of which is connected to a protective screen that guides the pair, one of the elements of which is fixed on the press frame, and the other on the protective screen, the limit switch controlling the position of the protective screen associated with the press control system, characterized in that it is provided with clamps to increase reliability extreme positions of the protective screen, each made in the form of a finger springed relative to the screen, and also connected to the control system by additional power cylinders, the rods of which are installed with the possibility of interaction Aligning with the pins of the retainers, while in the guide element mounted on the frame, are made through the window to accommodate the pins of the retainers and rods of additional cylinders. 2. A device according to claim 1, characterized in that it is provided with a throttle with a check valve connected to the said cylinders. 3. Device pop. 1, characterized in that it is provided with an abutment fixed to the piston of the main power cylinder, wherein the piston is made with a diameter smaller than the internal diameter of this cylinder. Aa E $$$ W, N