SU1412852A1 - Arrangement for transferring blanks between working positions of the press - Google Patents

Abstract

The invention relates to the processing of metals pressure.m. and can be used for shifting blanks between the working positions of the press. The purpose of the invention is the expansion of technical capabilities due to the improvement of the system for controlling the position of the workpieces. The workpieces are changed between the working positions of the press and the grapple rulers using the grippers. The deposition of blanks in the grippers is determined by the control mechanism, made in the form of power cylinders, in the cases of which plungers with two annular grooves are installed. The plungers are spring loaded perpendicularly to the axis of mixing the blanks. In each of the bodies there is a hole located between the annular grooves of the plungers and connected to the hydraulic system through a pressure switch and a choke. Each of the pressure relays is associated with a control system, 1eni, implemented as a logical electronic system. 2 Il. S

Description

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The invention relates to the processing of metals by pressure and can be used to transfer workpieces between press working positions.

The purpose of the invention is to expand technological capabilities by improving the system for controlling the position of the blanks.

FIG. 1 shows a device for moving workpieces between press positions; in fig. 2 shows section A-A in FIG. one.

The device contains a clamshell 1, in which cases 3 are mounted with screws 2. In case 3, a plunger 5 is installed with a tongue 4, at one end of which a spring 6 is located, holding the plunger 5 in its initial position (Fig. 2) and abutting the lid 7, and on the other with the help of bolts 8 and an adjusting gasket 9 - a grip 10. At the same time, the grippers 10 are mounted on the lung-jacks 5 in such a way that the control sling (protrusion) a, separating communicating annular grooves b, closes hole d, h Through which is supplied from an inevitable system. We have compressed air (Fig. 2). The grooves b and c are interconnected by a channel e. On the side of the gripper 10, between the plunger 5 and the casing 3 there is an annular gap i connecting the b channel and with the atmosphere.

The pneumatic system includes several pneumatic chains according to the number of plunger pairs. Each pneumatic circuit contains a pressure switch 12 associated with the logic electronics 13. Each pneumatic circuit is configured. The throttle 14.

The device works as follows.

Compressed air through the pneumatic system is constantly supplied to the housing 3 through the opening d (Fig. 2). If the workpiece 11 is in the grippers 10, the control juice of the plunger 5 closes the opening d. The pneumatic circuit, including the air throttle 14 and the pressure relay 12, is under pressure, and the pressure relay 12 supplies a signal to the logic electronic system 13 about the presence of the workpiece in the gripper.

If the workpiece 11 is missing for any reason in the grippers 10, the plunger 5 under the action of the spring 6 moves out of the housing 3 and connects the groove with the hole d. The air through the channel e and the gap i goes out into the atmosphere, which leads to a drop in pressure in the pneumatic nerni of this

a plunger which is fixed by a pressure switch 12, giving a signal to the logic electronic system 13 that there is no workpiece in the gripper.

The presence of the groove b provides for the case when a foreign object is caught in the gripper 10 than the workpiece 11, or, for example, when the grippers 10 abut against a burr (incorrect gripping). In this case, the plunger 5, compressing the spring 6, enters the housing 3 until it touches the cover 7 and connects the hole d with the groove b. The air through the gap i goes into the atmosphere.

There is a pressure drop in the pneumatic circuit of one of the plungers 5, fixed by the pressure switch 12. The signals from all pressure relays 12 are summed and processed by a logical electronic system 13, which, depending on the expected position of the plungers 5 during this cycle of operation of the clamshell, gives a signal to the emergency stop of the press or allows its further operation.

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Claims (1)

Invention Formula A device for moving workpieces between press working positions, comprising grapples arranged , symmetrically with respect to the axis of movement of the blanks and bearing grippers, the mechanism for controlling the position of the blanks in the grippers and the control system, characterized in that, in order to expand technological capabilities, by improving the system 5 control the position of the workpieces, the control mechanism is made in the form of plunger pairs, having housings with holes .1l of compressed air supply from the pneumatic network and plungers fixed on the gripper lines, each with at least two rings rear grooves and enclosures the plunger pairs can be moved in the direction perpendicular to the axis of the displacement of the workpieces and springs in this direction by springs, 5 throttles and a pressure switch connected to the control system, the control system being in the form of a logic electronic system, the grips are fixed on the plungers , the openings of the plunger steam housings are connected to the pneumatic system through a pressure switch and throttles, and the Ktz grooves of each of the rams of the rails. There are cuffs on either side of the housing apertures. fae. one A- Pobernusho city d. ten