SU1477642A1 - Device for destacking flat articles stack - Google Patents

Abstract

The invention relates to a device for disassembling a stack of flat objects and is aimed at improving the reliability of its operation. The device for disassembling the foot of flat objects includes a supporting table on which the front wall is fixed with a restrictive plate of elastic material and a variable cross section and a supporting wall with grooves for output rollers mounted on parallel drive shafts with eccentricity. The device also contains a pressure plate mounted on a rail extending perpendicularly to the support wall and spring-loaded in the direction towards this wall. 1 hp f-ly, 3 ill.

Description

The invention relates to devices for separating flat objects arranged in piles, such as packages, postal correspondence and the like, and can be used in various technical fields.

The aim of the invention is to improve the reliability of the device for disassembling a stack of flat objects.

FIG. 1 shows a device for disassembling a foot of flat objects, a general view; in fig. 2 is a diagram of the device, top view (without a pressure plate and a supporting wall); in fig. 3 - drive shaft with friction output rollers.

A device for disassembling a foot of flat objects comprises a supporting table 1, on which the front wall 2 with the restrictive plate 3 and the supporting wall 4 with the grooves 5 located outside the support wall 4 are fastened perpendicularly to it and between them, drive shafts 6 with friction output rollers 7, a shaft 8 kinematically connected to the shafts 6, on which a conveying roller 9 is mounted, cooperating with a pressure roller 10. The device also comprises a pressure plate 1 1 mounted on the guide 12 by means of a sleeve and 13, and the means for moving the plate 1 1 in the direction towards the output rollers 7, made in the form of a spring 14 placed in the guide 12, attached at its ends to the guide J 2 and the sleeve 13. The output rollers 7 are mounted on shafts 6 with eccentricity about the axes their rotation (fig. 3) and has a ribbed working surface. The restrictive plate 3 is made of an elastic material and has a variable cross section

in the direction from the front wall I to the support wall 4.

The device works as follows.

The flat objects 15 to be separated are installed in portions perpendicular to the edge of the front wall 2 between the output rollers 7 and the pressure plate 11. Under the action of the spring 1 4 close to the rollers 7, the object is pressed against the support wall 4. When the electric drive 16 is turned on, the output rollers 75 act on the object closest to them, move it towards the rollers 9 and 10. Moving under the action of the rollers 7, the object deforms the limiting plate 3 and falls between the rollers 9 and 1 0, which They are removed from the device. Since the angular speed of rotation of roller 9 is 2–3 times the angular velocity of output rollers 7, the object captured by rollers 9 and 10 jerks to the output of the device.

The next object adjacent to the one being removed, moving under the influence of the force of friction between the objects, is held up by plate 3, the rigidity of which quickly increases with increasing magnitude of its bending. This ensures that the subsequent object is reliably held out of the device. The delayed object cannot deform the loaded plate 3 even when it comes in contact with the rollers 7 immediately after the previous object has been removed, since due to the eccentricity of the installation of the rollers 7 on the objects, there is a periodic force that decreases the capture of the removed object by the transporting roller 9 and the contact of the adjacent object with the rollers 7. The subsequently detained object will start to be transported only after a full About the conclusion of the previous subject and the approach of the rollers 7 again to the position of their influence on the item to be removed. The installation of the rollers 7 in the proposed device provides an oscillatory movement of the foot of the objects 15 to the discharge rollers. The force of the normal pressure acting on the next s separated object increases when the foot of the objects is displaced from

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the support wall 4, and decreases as the foot moves toward the wall.

Thus reducing the strength of tre. nor, causing the movement of the nearest object, provides more favorable conditions for the absence of jamming and retention of the next object.

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As the portion of objects to be separated decreases, new portions of the objects are mounted on the support table J on the edge perpendicular to the wall 2 in front of the pressing plate 13. Due to the free installation of the plate 1 1 in the circumferential direction relative to the axis of the sleeve 13, the plate 1 rises from the support table i, which allows it to be moved along the guide and lowered to the table 1 to be positioned behind the new portion of objects that is placed between the plastic 11 and the arms 7 and is ready for its analysis. This ensures the continuity of the separation of objects to the gochi. By making the plate 3 with a variable cross section, it is not necessary to adjust the gap between this plate and the supporting wall 4 when feeding products that vary considerably in thickness.

Claims (2)

Claim 1 one . A device for disassembling a foot of flat objects, containing a supporting table for the disassembled foot, installed perpendicular to the supporting table and between each other a supporting wall with grooves and a front wall with a restrictive plate for holding subsequent objects separated from the foot, located on the outer side of the supporting wall shafts with friction output rollers for interacting with a detachable object through the grooves of the supporting wall, a pressure plate mounted on a perpendicular supporting wall of the supporting wall and means of moving the pressure plate towards the outlet rollers, characterized in that, in order to increase the reliability of its operation, the exit rollers are mounted on the drive shafts eccentrically, the restrictive plate is made of an elastic material and has a variable a cross section in the direction from the front wall to the support wall, and the means for moving the pressure plate is in the form of a spring, 7th Fm.1 connected to its ends with a pressure plate and its guide, 2. The device according to claim 1, of which is that the output rollers are ribbed. / I AND Phage.2 Fig.Z