SU1319980A1 - Arrangement for separating a flat blank from a stack and feeding it to press - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used to mechanize and automate the processes of separation from the foot of a slab and to feed it to a press. The purpose of the invention is the expansion of technological capabilities. The goal is achieved by performing a mechanism for moving the gripping bodies in the form of a copy groove associated with the copy groove of the pivot arm, the toothed sector running around the toothed sector of the shaft-gear, cranks and shatunov. Said imperfection of the mechanism of movement of the gripping bodies allows increasing the vertical movement of the gripping bodies and increasing the dynamic characteristics of the device. 3 il. (L 00 with CO 00

Description

The invention relates to the processing of metals by pressure and can be used to mechanize and automate the processes of separation from the foot of a flat billet and to supply it to the press.

The aim of the invention is the expansion of technological capabilities.

FIG. I shows the device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a section BB in FIG. 2

The device for separating the flat blank from the foot and feeding it into the press comprises a frame 1 placed in the frame on the guides 2 and 3 of the carriage 4 of horizontal movement. Vertical guides 5 and 6 are mounted on the carriage 4, a beam 7 with gripping bodies 8 is mounted on them, under which a stack of 10 sheet blanks is mounted on the sliding table 9. The actuating mechanism and the height of the beam 7 with the gripping bodies 8 includes a single-arm pivoting lever 11, fixed at one end with the axis 12, hinged on the carriage 4 of horizontal movement. The loose end of the lever 11 carries the rollers 13 and 14 moving along a copy groove 15 made on the bed 1. The drive of the lever I is made in the form of a helical rolling pair. The screw 16 is connected to the stepper motor 17 with programmed control m (not shown), and the nut 18 carries a fork 19 connected to the connecting link, axis 20, on the lever 11 placed between the rollers 13 and 14. Axis 20 moves in the slot of the fork 19. In the lever 11, in the bearings there is a shaft-gear 21, and on the carriage 4 of horizontal movement there is fixed a gear sector 22, with which the gear-shaft 21 interacts with gearing. At the ends of the gear shaft 21, cranks 23 and 24 are rigidly fixed, articulated with rods 25 and 26, which, in turn, are hingedly ineny with the beam 7, supporting the gripping bodies 8. Reference numerals 27 and 28, rollers feed roller press marked.

The profile copy groove 15 on frame 1 has three sections forming a central rectilinear part and two radius end parts. On the straight part, horizontal movement of the beam 7 with gripping bodies 8 takes place, and on the radial end parts, the vertical carriage 4 of the horizontal movement and vertical movement of the beam 7 occurs at the extreme left and at its rightmost position.

The axis of symmetry of the extreme parts of the profile copy groove 15 is made with a radius equal to the radius of installation of the axes of the rollers 13 and 14, which makes it possible for the lever 11 to approach the left and right positions of the stroke of the beam 7 so as to hold it dormant, while the lever 11 carries out rotational motion along the radius curve of the copier groove around the hinge 12 of the horizontal carriage 4.

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In a profile-m copier groove 15, the transition of the upper formative rectilineal portion to a radius is accomplished with not reaching the extreme positions of the horizontal movement of the carriage 4 by half the angle of the guide rollers 13 and 14 of the lever 11, and the transition of the lower generating rectiline of the copier groove passing over the extreme positions of the stroke of the carriage 4 also by the amount of half the angle of the guide rollers 13 and 14.

The device for separating the slab from the foot and feeding it into the press works as follows.

The foot 10 of the sheet blanks is installed outside the feeder on the sliding table 9, which is then inserted and installed in the frame 1 so that the foot 10 of the blanks is under the gripping organs 8. At the initial position, the carriage 4 is in the leftmost position (according to the drawing) the position of the horizontal portion of the copy groove 15, and the grippers are mounted above the foot 10 of the blanks. The rolls 27 and 28 of the roller feed of the press are opened to receive the sheet stock.

The drive feed mechanism allows the gripping organs to carry out a chain of continuous sequential movements according to a certain HOjMy law, and that is the shift: lowering - gripping the workpiece - lifting - horizontal transfer - lowering - releasing the workpiece from the grips.

The rotation of the shchagovogo engine 17 with my 1, new screws 16 move the nut 18 to the left. Moving, the nut 18 with the fork 19 through the connecting link 20 rotates the lever 11 around the hinge 12, the rollers 13 and 14 roll around along the radius forming copier groove 15 in the frame 1. At the same time, the shaft-scraper 21 rolls around the teeth of sector 22, with it rotation, cranks 23 and 24, rigidly connected to the bristle shaft, which in turn, by means of connecting rods 25 and 26, hingedly connected to the cranks, lower the beam 7 with the gripping bodies 8 to contact with the top blank in the foot 10, it is captured.

After working out the program for taking the workpiece, a command is issued for the reverse of the stepper motor 17, the nut 18 is shifted; right, lift the beam 7 along the vertical guides 5 and 6 using tongues 25 and 26 connected through cranks 23 and 24 with rolling gear sector 22 with gear shaft 21 fixed in lever 11, which with rollers 13 and 14 moves in slot 15. When lever 11 leaves radius curve in groove 15, the whole mechanism, including lever 11, carriage 4, beam 7 with grippers 8, makes horizontal displacement by the magnitude of the linear metering stka profile groove follower 15 until the approach of the lever 11 to start the curved groove portion. After that, the horizontal movement of the carriage 4, the beams 7 with the grippers 8 carrying the workpiece, is stopped. Upon further movement of the nut 18, the beam 7 is lowered with the grippers 8 carrying the workpiece with the orientation of the latter using an orientation mechanism (not shown), placing it between the feed rollers 27 and 28 mounted on the press. The billet is freed from gripping, the rolls of the roller feed are fed into the press tamper (not shown), and the beam 7 reverses the engine 17 and all the mechanisms associated with it, together with the grippers 8, lifts and returns to its original position. After the processing of the sheet blank on the press is completed, the cycle of the feeding device is repeated, and the grippers 8 according to the program lower and grip the sheet blanks from the foot 10 until it is completely sampled. Then table 9 rolls out of the bed and a new stop of blanks is installed. The cycle is repeated.

The invention makes it possible to eliminate the mechanism for raising the stack of workpieces by increasing the vertical course of the feed beam with the gripping bodies, which made it possible to use more fully the capabilities of the programming device, as well as to increase the reliability and stability in operation.

Claims (1)

Invention Formula A device for separating a slab from the foot and feeding it into a press containing a bed with horizontal guides, a carriage mounted on the guides with the possibility of reciprocating movement, a driving movement of the carriage in the form of a driving screw mounted on the carriage with the possibility of reciprocating movement in the vertical direction of the gripping bodies and mechanism of movement gripping organs, characterized in that, in order to expand technological capabilities, the mechanism for moving the gripping organs is made in the form of a copy groove made in the frame associated with the hammer groove, hinged on the carriage of a pivoting lever mounted on a carriage of the toothed sector mounted rotatably in the pivoting lever and interacting with the toothed sector of the shaft-shticater, curved rods mounted on the shaft-shchestrin and shatunov associated with the crankshafts and gripping bodies. 16 22 75 M- / LA. sixteen 20 2 25 FIG. 2 Bb Compiled by I. Ment Gova Tehred I. Veres Corrector L. Patay Circulation 732 Subscription VNYIPI USSR State Committee for Inventions and Discoveries 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, ul. Project, 4