SU409761A1 - - Google Patents

Description

one

The invention relates to the field of sheet punching automation and can be used to automate the loading of horizontal presses with strip blanks.

Devices are known for single-piece separation of flat sheet blanks from a vertical foot and turning them into a vertical position, for example, to feed a horizontal press into the working area, containing a table for laying the stack of blanks and a housing pushed over it in a vertical plane with radially movable relative to it axes of rotation with holders mounted on them.

A disadvantage of the known devices is that they do not provide reliable separation of the workpiece from the foot, because the gripping organs in the separation process perform only a translational motion in a direction perpendicular to the base of the workpiece.

The purpose of the present invention is to improve the reliability of the separation of blanks.

For this, in the proposed device, the gripping bodies are mounted on the holders and connected with them by means of the levers provided by the IB device mounted vertically on axes mounted on the holders and spaced from the axis of rotation of the body. placement below the reference plane of the workpiece to be seized at the time of its capture.

FIG. 1 shows the kinematic scheme of the device proposed; on fit. 2 - view of the device in the direction of supply of blanks; in fig. 3 - 1VID on the device in the direction perpendicular to the direction of flow; in fig. 4 - section A - A in FIG. 3; in fig. 5 - section B - B in FIG. 3

The device comprises a slider 1 movable along the feed direction (perpendicular to the PLANE of the drawing in Fig. 1), on the axis 2 of which the body 3 rotatable in a vertical plane with radially movable holders 4 is installed. .

The distance between the axis of rotation of the body and the axes 7 of the hinges on which the levers are mounted is chosen from the condition of placing the axes of the hinges below the supporting plane of the detachable workpiece 8 at the time of its capture and separation from the foot laid on the table 9, and the levers 5 are connected by a beam ten.

On the beam 10, vacuum grippers are reinforced, which are evenly distributed in a staggered manner along the beam.

The device has two actuators: an actuator 11 for rotating the housing and an actuator 12 for rotating the levers 5. Both actuators are rack-and-pinion, the rails of which are driven by cams dS and 14 mounted on shaft 15. Cams 13 and 14 through levers 16 and 17 (respectively) click on the corresponding gear racks 18 and 19 of these drives. The rails 18 and 19 are spring-loaded springs 20 and 2i.

The rail 18 of the body rotational drive interacts with the gear wheel 22 fixed on it, and the rail 19 of the lever rotation actuator 5 interacts with the gear wheel 23 mounted on the gear shaft 24, which is located inside the body.

Guides 25 are fastened on the casing, in which holders 4 are placed, ending with forks 26, with which the arms 5 are hingedly connected. Springs 27 pull the holders to the extreme position.

Through holders and guides passes ti gi 28 with a toothed rack 20 at the end. The lower ends of these rods are equipped with pins 30, which interact with the slots 31 of the arms 5. The rake 29 interacts with the gears 32 of the gear shaft 24.

The device works as follows.

The drive rotates the shaft 16 with the cams 13 and 14 located on it, whose profile contains | Within the program of work of the whole mechanism. The cams, rotating, press on the levers 16 and 17, and those, in turn, on the gear racks 18 and 19. The gear rack 49, when moving to the left (Fig. 2), rotates the gear shaft clockwise. As a result, the ha 28 moves downward, and the pins 30, moving, in the slots 31, rotate the lever 5 downwards, counterclockwise, the vacuum grippers are lowered onto the stack 33 of the workpieces, the vacuum system is turned on, and the upper workpiece sticks to the grips. ,

In the reverse direction of the toothed rack, 19 tons ha 28 rises up, and its stops turn lever 5 clockwise, together with the picked sheet, at a certain angle. Upon further upward movement of the rod, with its shoulders 34 and 36, it rests on the stops 36 of the fork 26 and pushes it into the guide 25.

After that, the cam 13 introduces the drive M of the rotation of the housing. The rail 18 rotates at a certain angle counterclockwise with the arms 5 and the gripped sheet.

At the end of the rotation of the housing, the actuator 42 again begins to operate. In this case, the levers 5 are again turned counterclockwise and the sheet is moved to the vertical position, after which the carriage begins to move

together with raising the billet to the roll feed of the automatic press (not shown in the drawing). As soon as the rolls capture the workpiece, the vacuum system of the grippers is turned off, the carriage moves back to its original position

(the carriage drive is not shown in the drawing).

Subject invention

A device for single-piece separation of flat sheet blanks from a vertical foot and turning them into a vertical position, for example, for feeding a working area of a horizontal press, containing a table for laying the stack of blanks and placed above

it has a housing that is rotatable in a vertical plane, with holders that are movable in a radial direction relative to its axis of rotation, with gripping bodies mounted on them, characterized in that

The purpose of improving the separation of workpieces, gripping bodies are mounted on holders and connected with them by means of levers mounted in a device that can be rotated in a vertical plane on axes fixed on holders and spaced from the axis of rotation of the body. The distribution is below the reference plane of the workpiece to be seized at the time of its capture.

6 7

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FIG. 2

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.s 3f 25