CS212958B1 - Facility for delimitation of the working position of the semiproduct mainly slugs in the space between the working rolls and for the control of the working running of rolls,particularly by the cross rolling - Google Patents

Description

BACKGROUND OF THE INVENTION The present invention relates to a device for automatically defining a working position of a rolled blank between working rolls and to control the working of the rolls, in particular for an automatic or semi-automatic machine cycle, which enables reliable use of the equipment in production lines.

The working position of the workpiece blank in the space between the working rolls during transverse rolling and transverse wedge rolling was originally carried out manually. Then the working position was defined by a movable stop, the adjustment of which was provided by two pneumatic cylinders. Once the working position of the workpiece has been correctly defined, the work rolls are automatically started.

During cross rolling from heating, visual inspection of the heating by the operator was necessary. If the workpiece was not sufficiently heated, the operator had to prevent unwanted start of the work rollers to prevent damage to the tool on the work rollers or even the machine, which was done with the push-button control. Only after removal of the insufficiently heated preform was it possible to continue rolling.

The disadvantage of the stated positioning of the working position is its unreliability, caused by contamination and eventual jamming of the stop, supervision by the operator, manual intervention and unreliability of the human factor.

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The adjustment of the stop itself is also laborious, since the stop of the rollers must be moved by half the difference between the rollers.

These disadvantages of defining the working position are substantially eliminated by the device according to the invention, which consists in that at least one of the working rollers facing the feed direction of the workpiece is provided with an adjustable stop having an opening of less than and the sensor for checking and detecting the workpiece is either touch or non-contact.

An exemplary embodiment of the device as well as the positioning of the blank during cross-rolling according to the invention is shown in the drawing, wherein FIG.

The ^K illustrates the layout of the work rolls with a stop in cross-section and Fig. 3 represents a schematic view of the working rolls at the stop moving mechanism and a limit switch in a front view.

In the machine frame 1, the working rolls 2 and g are arranged with the same sense of rotation, on whose shells the own shaped rolling segments 4 and g are fixed for cross wedge rolling or cross rolling.

In the working space between them, a stop A is fixedly fixed on one of the rollers 2 and g, which unilaterally limits the position of the blank g. The presence in the correct position is sensed by the sensor 8 when rolling the blank g with heating.

At the same time, the sensor 8 checks that the workpiece has been heated to the specified temperature. If the heating temperature is not within the permissible tolerance, or the blank g is not in the correct position at the stop 6 or both, the sensor 8 does not give an impulse to start the rotation of the working rolls 4 and g.

This arrangement of the device for defining the working position of the workpiece thus protects the machine 1 from damage.

In the case of material forming without heating, the sensor 8 is replaced by a limit switch g and a transfer mechanism 15-ig. The switch g has the same function as the sensor 8 when rolling the heated blanks g.

The feed of the heated and unheated workpieces g takes place along the guide 10. Before the gripping segments 4, g of the work rollers 2, g are held, the workpiece is held by the guide segment ϋ and the front and rear guide rails 12 and ig.

The rolled product obtained by rolling the workpiece g is discharged after chute 14 for further transport or storage. The sensor 8 can use a touch or non-contact system for the control pulses, which controls the position and the correct heating temperature.

The device according to the invention simplifies the construction considerably for the adjustment of the stop, increases the reliability, accuracy of the feeding of the workpiece and does not allow working

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This protects the machine and tool from possible damage.

Increased reliability enables machine performance to be increased both in the case of non-production line production and individual or group use of machines. «

The apparatus according to the invention can be used in particular on machines for cross wedge rolling and for cross rolling without or with heating.

Claims (3)

THROUGH DMFi T INVOLVED FROM U A device for defining the working position of a workpiece, predominantly blocks in the space between the work rolls and for controlling the working operation of the rolls, in particular in cross rolling, characterized in that at least one of the work rolls (2, 3) 7i, there is provided a longitudinally adjustable stop (6) provided with a punching (6) in a range smaller than the cross-section of the feed blank (7) for the sensor sensor (8) connected in the actuating circuit of the working rolls (2,3). Device according to claim 1, characterized in that the recess (6) in the stop is formed in the cross-sectional area of the feed blank (7) along its longitudinal axis. Device according to Claims 1 and 2, characterized in that the sensor (8) is touch or non-contact.