SU1291258A1 - Arrangement for separating upper sheet from a stack - Google Patents

Abstract

The invention relates to the field of engineering. The aim of the invention is to expand the technological capabilities and increase the reliability of the process of separating the top sheet. The traverse is moved downward until the vacuum gripping organs interact with the stowed foot mounted on the table. The stop, moving down, presses the middle part of the upper sheet of the foot. At the same time, the edges of the top sheet are folded over and as the bend increases, the sheet separates. The hinged connection of the gripping bodies with the brackets ensures their perpendicular position to the sheet plane. 1 3.p. f-ly, 3 ill.

Description

one

The invention relates to a machine-v structure and can be used in loading devices, for example, in cold sheet punching for single piece removal from the foot of flat sheet blanks stuck together, for example, due to the presence of lubricant between them.

The purpose of the invention is to expand the technological capabilities and enhance the reliability of the separation of the top sheet,

Fig. 1 shows schematically a device for separating the top sheet from the foot (the initial position - vacuum grippers gripped the sheet), Fig 2, a device for separating flat parts (the central stop pressed the sheet, the edges of the top sheet moved away from the foot); FIG. 3 is a section A-A in FIG. 1;

The device for separating the top sheet from the foot comprises a movable yoke 1 on which the brackets 2 and 3 are mounted with the possibility of movement. On the brackets 2 using a nut 4 mounted vacuum gripping bodies 5, spring-loaded in

12

V

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the vertical direction of the springs 6, relative to the yoke 1 in the slots 12

Bracket 3 is connected via a hinge 7

with the stop 8 mounted on the rod of the pneumatic cylinder 9, the stop 8 can be adjusted in height H by means of an adjusting nut 10. Bracket 2 is attached by means of a hinge 11 to traverse 1 and can move along it in grooves 12, Both brackets 2 and 3 are interconnected the hinge 13, the vacuum gripping body 5 is provided with a hinge 14. A stack of sheet blanks 15 is placed on the table 16, I

A device for single piece separation of the top sheet from the foot works as follows.

Traverse 1 from the drive (not shown) moves down to the interaction of the vacuum gripping bodies 5 with a foot of sheet blanks 15 mounted on the table 16. Next, air is supplied to the cavity of the pneumatic cylinder 9, and the stop 8 moves downward and presses the lower part of the upper sheet of the foot 15 When the pneumatic cylinder 9 moves, the arms 3, which in turn, rotate around the hinge 13, turn the arms 2 around the hinge 11. At the same time, the bend of the edge occurs (by changing the ratio between L, and L

After separation of the top sheet of the foot, the device transfers it to the ecological equipment (not yet shown) and sets it in the technological position.

The return of the working bodies to their initial position is as follows.

Into the cavity of the pneumatic cylinder 9 of the hearth air, the stop 8 is pulled in, the sheet is aligned, vacuum is removed in the vacuum gripping bodies and the sheet is unstuck. At this time, the spring 6 returns the vacuum gripping organs of the hinge 14 to the vertical position.

The proposed technical solution allows in one device to solve a number of technical problems related to the automation of the technological process in separating the top sheet from the foot of the blanks of any elastic materials (both ferromagnetic and non-ferromagnetic).

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The presence of a central stop of the sheet material with the possibility of its height hulking and located from it along the edges of the vacuum grippers

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The top sheet from the foot (FIG. 2), Hinge 14, located on the vacuum gripping organs, allows the perpendicular position to be maintained to the 5th plane of the sheet. If during the separation of the top sheet from the foot, the bottom sheets adhere, then as the bending increases (relative to the stop 8) due to the elastic properties of the sheet material and the opposite in the directions of the forces (force acting from the vacuum gripping bodies + P and the force of elasticity the sheet acting opposite to -P creates a separation force of 2P) separation occurs, and the lifting device removes one sheet.

The amount of bending of the sheet edge, depending on its elastic properties, can be adjusted by varying the height H with the adjusting nut 10. This height for various properties of the material can be selected empirically.

The choice of the ratio of the speeds of movement of the bracket 2 with the gripping vacuum bodies 5 and the stop 8 is adjusted by moving the bracket 2

15

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25

It is relatively traverse 1 in grooves 12

five

0

relative to the traverse 1 in the slots 12

(change in the ratio between L and L),.

After separation of the top sheet from. foot device transports it to the technological equipment (not shown) and sets it to the technological position.

The return of the working bodies in the original position is as follows,

Air is supplied to the cavity of the pneumatic cylinder 9, retraction of the stop 8 takes place, the sheet is leveled, vacuum is removed in the vacuum gripping bodies and the sheet is unstuck. When this spring 6 returns the vacuum gripping bodies of the hinge 14 to a vertical position.

The proposed technical solution allows in a single device to solve a number of technical problems associated with the automation of the technological process in the separation of the top sheet from the foot of blanks of any elastic materials (both ferromagnetic and non-ferromagnetic).

45

The presence of a central stop of the sheet material with the possibility of its height adjustment and located from it along the edges of the vacuum gripping

The organs that are located below the working face of the clamp allows flexible adjustment of various types of flat blanks, both in material and in size, which is especially important when creating flexible production systems.

ten

Claims (2)

1. A device for separating the top sheet from the foot, comprising a table for placing a sheet of sheets, a traverse, brackets with spring-loaded relative to the latter gripping bodies and installed with the possibility of adjusting movement along five 0 Traverse, characterized in that, in order to expand the technological capabilities and increase the reliability of the separation of the upper sheet, it is provided with a stop installed between the gripping bodies and pivotally connected by means of additional brackets with the brackets of the gripping bodies, and the drive of its vertical movement, and the gripping bodies are located below working end face stop. 2.- The device according to claim 1, about tl and - so that the gripping bodies are connected to the brackets by means of hinges. // / -S 13 12 one ll FIG. 2 Editor O. Golovach Fig.E Compiler M. Lastochkina Tehred I.Popovich Proofreader E.Sirohman Order 76/12 Circulation 733. Subscription VNIIPI USSR State Committee for Inventions and Discoveries 4/5, Moscow, Zh-35, Raushsk nab. 113035 Production and printing company, Uzhgorod, st. Project, 4