SU1311872A1 - Apparatus for feeding measured lengths of material into cutting zone - Google Patents

Abstract

The invention relates to mechanical engineering and can be used to measure the length of rolled strip when cutting it into dimensional sheets. The aim of the invention is to simplify the design. When the strip workpiece is moved by the driven feed roller, the measuring roller rotates. which by means of a flexible element moves the bar with the sensitive element relative to the measuring scale and the contactless switch (BV). When the sensitive element passes through the gap BV, the latter sends a signal to the feed shutdown mechanism and turn on the cutting mechanism. The feed shut-off mechanism is designed as a two-armed lever with its rotation drive. One of the arms is connected with a pivot drive shaft, and the second is made of an i-shape with a brake element and drive pulley located on it. At the end of the cutting mechanism, the signal from the BV enters the feed cut-off mechanism. In this case, the braking element moves away from the strip and the drive feed roller presses against the measuring roller. 4 hjj AND

Description

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The invention relates to mechanical engineering and can be used to measure the length of rolled strip when cutting it into dimensional sheets.

The aim of the invention is to simplify the design of the device for measuring the material in the cutting zone.

FIG. 1 shows a device for measuring material feed into the cutting zone, an oblique view; in fig. 2 is a view A of FIG. I; in fig. 3 is a view B in FIG. in fig. 4 shows a section B-B in FIG. 3

The device includes a housing 1 with a measuring roller 2, under which the drive feed roller 3 is located. The mechanism 4 for shutting off the material supply is made in the form of a two-arm lever 5, one shoulder of which is pivotally connected to the stem 6 of the power cylinder 1-schr 7, the other shoulder is U-. Figurative 8, at one end of which a brake element 9 is installed with a spring-loaded stop 10 located above it, and at the other end - a drive unit; and roller 3,

An asterisk 11 is rigidly fixed on the axis of the measuring roller 2, on which a flexible element 12 is installed, made in the form of a chain. One end of the flexible element 12 is connected to a plate 13 provided with a sensitive element 14. The second end of the flexible element 12 is passed through block 15 and provided with a counterweight 16. The bar 13 is movable relative to the measuring scale 17 and the contactless switch 18 located on the base 19. Base 19 is equipped with a scale indicator 20 and a latch 21 securing the base 19 on the rails 22.

The device works as follows.

Before starting work, the base 19 is moved along the rails 22. and the scale indicator 20 is set on the measuring scale 17 against division, corresponding to the length of the cut piece. The end of the strip to be cut into workpieces is installed in the plane of operation of the cutting tool of the cutting mechanism 23. The driving feed roller 3 contacts through the workpiece with the measuring roller 2. With the launch of the device, the feed of the workpiece is switched on. As the strip blank moves, the measuring roller 2 pressed against it, rotates, together with

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It also rotates the sprocket 11, which through the flexible element 12 moves the bar 13 with the element 14 relative to the measuring latches 17 and the contactless switch 18 located on the base 19.

The length of the cut billet corresponds to a certain number of revolutions of the measuring roller 2. The number of revolutions of the measuring roller 2 through the gear ratio corresponding to the ratio of the diameter of the measuring roller 2 to the diameter of the sprocket 1, is converted into linear dimensions 1 17. When the element 14 passes through the slot of the contactless switch 18, the latter gives a signal on the mechanism 4 off feed and includes a mechanism 23 of the cut. When a signal is received from the contactless switch 8, the cylinder 10 is actuated. The brake element 9 presses the workpiece against the spring-loaded stop 10 and at the same time the lever 5 with the driven feed roller 3 turns from the measuring roller 2. The bar 13 with element 14 returns to its original position under the action of its own weight. At the end of the idling time of the cutting mechanism 23, the signal from the proximity switch comes to the feed shut-off mechanism 4. The power cylinder 7 operates, the brake element 9 spins around the hinge of the lever 5 from the spring-loaded stop 10, and the driving feed roller 3 presses against the measuring roller 2. The cycle repeats.

Claims (1)

Invention Formula A device for measuring material feed to the cutting zone, containing a drive feed roller, a measuring roller mounted above it, kinematically associated with a material feed shutdown mechanism through a counting mechanism, characterized in that, in order to simplify the design, the material feed shutoff mechanism a lever, a drive of its rotation in the form of a power cylinder, the brush of which is pivotally connected to one lever arm, and the other lever arm an i-shape is made, at one end of which a brake element is installed, and at the other end - a driving feed roller, and a contactless switch, the counting mechanism is made 3131187 in the form of a dimensional scale with a fixed pointer associated with a contactless switch of the bar mounted for movement along dimensional scales, and kinematically connected with a measuring roller by means of a flexible element, while the device is equipped with a spring-loaded stop, which is located opposite to the brake tube .1 FIG. 2 77777777 Fig.Z Yu