SU1569062A1 - Arrangement for piecewise separation of flat blanks from a stack - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the means of mechanization and automation of sheet metal forging production. It can be used to separate the sheet stock. The purpose of the invention is to increase reliability. The device contains located on a support foot blanks, the traverse with two vacuum gripping bodies. The vacuum gripping bodies are made in the form of a housing 33 and an elastic suction device 30 connected to a vacuum source. In the case 33, there is a vertical axis 23 with a cavity 24, fixed on the traverse. On an axis 23, a sleeve 26 is rotatably fixed with an annular groove 27 and a channel 28 ending in a tangentially located nozzle. The elastic suction device 30 is fixed at the end of the axis 23 and forms an annular cavity 34 with the body 33. The device provides variable deformations of different directions and in different planes in the gripped workpiece. 8 il.

Description

one

(21) 4475073 / 25-27

(22) 08/19/88

(46) 07.06.90. Bul Number 21

(72) D.G.Gazazov, Yu.K. Batyrev

and G.I.Hvoschevsky

(53) 62-229.7 (088.8)

(56) USSR Author's Certificate No. 1355334, cl. B 21 D 43/24, 1985.

(54) DEVICE FOR SAILING 01- FISSION PLANE FROM STEPS

(57) The invention relates to the processing of metals by pressure, in particular

to the means of mechanization y. automation sheet stamping production. It m. used to separate the sheet blank. The purpose of the invention is to increase reliability. The device contains located on the support

foot blanks, traverse with two vacuum gripping bodies. The vacuum gripping bodies are made in the form of a housing 33 and an elastic suction device 30 connected to a vacuum source. In the case 33, there is a vertical axis 23 with a cavity 24, fixed on the traverse. On an axis 23, a sleeve 26 is rotatably fixed with an annular groove 27 and a channel 28 ending in a tangentially located nozzle. The elastic suction device 30 is fixed at the end of the axis 23 and forms an annular cavity 34 with the body 33. The device provides variable deformations in various directions and in various directions; planes in the seized billet. 8 il.

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The invention relates to the processing of metals by pressure, in particular to the means of mechanization and automation of sheet-forging production, and can be used to separate the sheet stock from the foot and feed it to the press.

The purpose of the invention is to increase reliability.

Figure 1 shows a device for single piece separation of flat blanks from the foot, side view; figure 2 is a view of And figure 1; figure 3 - vacuum

capture, cut; figure 4 - section

BB on fig.Z; Fig. 5 shows a sheet blank captured by vacuum grips with a deforming force applied to it in the opposite direction of air jets rotating out of the tangential nozzles of rotating-20 sleeves; figure 6 - the same, with the opposite direction of the air jets; 7 - the same, with the opposite non-coaxial direction of the air jets; 25 in FIG. 3 - the same, with non-axial unidirectional arrangement of jets.

A device for single piece separation of flat blanks from the foot contains

the yoke 1 with vacuum grippers begins to work in automatic machines 2, fixed with the possibility of longitudinal movement by means of a spline axis 3 connected by means of bracket 4 with a cylinder rod

mode. Traverse 1 is lowered by cylinder 7 all the way into the stack of sheet blanks 10. Vacuum gripping bodies 2 are activated. Through tube 30

 5 and with the sleeve 6, which is provided in the vertical and the channel 29, the cavity of the elastic sucker

the movement of the cylinder 7 mounted on the support 8. The base 9 of the cartridge for the workpieces 10 is fixed on the upper flange of the lifting1 cylinder 1 1 mounted on the plate 12. Adjustable guides 13 are fixed on the axis 14 with the possibility of longitudinal movement in the sleeves 15 of the bracket 16 fixed on the uprights 17. The guides 18, limiting the longitudinal arrangement of the foot in the cassette, are fixed on the plates 19 mounted below the base 9 with the possibility of longitudinal movement by the amount of the longitudinal grooves made in them. In the support plate 20, transverse grooves are made to move the guides 13.

The vacuum gripping organ (FIG. 3) contains a means for separating the blanks from the foot, made in the form of a vertical axis 21 with a cavity 22 formed in it. On the vertical axis 21 rotatably fixed

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28 is connected to a vacuum source (the workpiece is trapped), and compressed air is fed into the channel 22 of the vertical axis 21, which through the annular groove 25, the channel 26 and the tangentially located nozzle 27 exits; through the annular cavity 32 outward. In this case, the reaction of the air jet emanating from the tangential nozzle 27 spins the sleeve 24 around the axis 21 counterclockwise. When the air jet travels around the cavity 32 in the latter and further above the surface of the captured part, a circumferentially varying reduced pressure is generated in the action area of the jet, resulting in spatial deformations of the captured workpiece. With the opposite direction of the air jets V,, Vt, the billet is bent upward in the middle part due to the effect of higher pressure P. If the air jets V1t V2 are oppositely coaxially, the ends of the billet are raised due to the action

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on bearings 23, a sleeve 24 with an annular groove 25 and a channel 26, ending with a tangentially ported axial nozzle 27, made perpendicular to the radius of the forming sleeve. At the lower end of the sleeve is fixed elastic vacuum sucker 28, connected via channel 29 and tube 30 to a vacuum source (not shown). The axis 21 with the sleeve 24 is located in the housing 31, which forms an annular cavity 32 with the surface of the elastic suction cup 28. The vacuum gripping body is via the axis 21, Nuts 33 with a washer 34 mounted on the yoke 1.

The device works as follows.

The device cartridge is manually filled with a stack of sheet blanks 10, which are placed on the supporting plate 20 located in the lower initial position. Guides 13 and 18 are mounted around the perimeter of the blanks loaded by moving the axes 14 in the sleeves 15. After installing the guides by means of bolts (not shown) the sleeves 15 clamp and fix against the movement of the axis 14. The device starts to work in automatic

mode. Traverse 1 is lowered by cylinder 7 all the way into the stack of sheet blanks 10. Vacuum gripping bodies 2 are activated. Through tube 30

and channel 29 cavity elastic suction

28 is connected to a vacuum source (the workpiece is trapped), and compressed air is fed into the channel 22 of the vertical axis 21, which through the annular groove 25, the channel 26 and the tangentially located nozzle 27 exits; through the annular cavity 32 outward. In this case, the reaction of the air jet emanating from the tangential nozzle 27 spins the sleeve 24 around the axis 21 counterclockwise. When the air jet travels around the cavity 32 in the latter and further above the surface of the captured part, a circumferentially varying reduced pressure is generated in the action area of the jet, resulting in spatial deformations of the captured workpiece. With the opposite direction of the air jets V,, Vt, the billet is bent upward in the middle part due to the effect of higher pressure P. If the air jets V1t V2 are oppositely coaxially, the ends of the billet are raised due to the action

At higher pressures Pf, Py. When the air jets V are oppositely aligned, (Va) the deformation of the part takes the form of a propeller due to the pressure P1, P2. 2. When rotating the sleeves 24 of the vacuum grippers 2 with different angular velocities, the nature of the deformation of the gripped workpiece may take the form shown in Figures 5-8 and any other intermediate positions.

/ As a result of a complex spatial deformation of the workpiece, it is reliably separated from the foot when lifting the beam I.

In the upper initial position of the yoke I, the supply of compressed air to the channel 22 of the axis 21 and the cylinder 5 of the yoke through the bracket 4 is stopped and the splined axis 3 moves relative to the sleeve 6 in the longitudinal direction to the device for step-by-step feeding of the workpiece to the press (not shown).

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When the dimensions of the blanks are changed, the guides 13 and 18 of the cassette are reinstalled.

Claims (1)

Invention Formula A device for single piece separation of flat blanks from the foot, containing a gripping body, made in the form of a body with an elastic suction cup, means for separating the workpiece from the foot, placed inside the body, characterized in that, in order to increase reliability, it is provided with an additional gripping body , the means for separation is made in the form of a vertical axis with a strip connected to a source of compressed air 20, on which a sleeve with a tangentially arranged nozzle in it is mounted for rotation, 15 R 25 I connected by channels with an axial cavity, wherein the elastic suction device is fixed at the end of said axis with the formation of an annular cavity for directing the flow of compressed air. 12 1 Vida four Pi FIG. 7 h g5g55-N G55g 1-E s-in $