SU1391784A1 - Gripping member - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used for unit separation from the pile of flat and cylindrical blanks of magnetically active materials and their subsequent supply to the die. The goal is to expand the technological capabilities by ensuring the capture of elongated in plan blanks. When moving the holder 8 with the magnet 11, on which the take-up preforms 9 are located, the holder rotates as a result of the interaction of the rollers 16 and 18 alternately with the copiers 22 and 23 in mutually perpendicular directions. As a result of the rotation, the vertically gripped blanks are attracted by the plane to the surface 13 of the magnet, which ensures their secure grip. 3 or

Description

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The invention relates to the processing of metals by pressure and can be used for pieces on the separation from the beginning of flat and cylindrical blanks of magnetic materials and subsequent (her filing them in the die

The purpose of the invention is the expansion of technological capabilities by ensuring the capture of elongated in plan.

FIG. 1 shows a gripping organ, a longitudinal section; in fig. 2 shows section A-A in FIG. one; in fig. 3 is a diagram of the location of the workpiece on the gripping organ, a longitudinal section.

The gripping organ for elongated blanks comprises a base 1 fixed on a bar 2, a stretch flexible element 3 fixed on the meringue, made in the form of a flexible tape of rectangular section. The bending tape is mounted in a guide hole 4 made in a fixed sleeve 5. In the holes 6 of the sleeve there are rods 7 fixed to the base.

A holder 8 for a workpiece 9 is mounted on the case; it is made in the form of a screen 10, in the cavity of which a magnet 11 is fixed with the poles in the direction perpendicular to the direction of movement of the case. The end face 12 of the screen and the end face 13 of the magnet are located on the same level.

The strip 14 is fixed on the flexible tape and is equipped with pairs of rollers 15 and 16, 17 and 18, which are located on axes 19. The pairs of rollers have the possibility of contact with working surfaces 20 pairs of cams 21, 22 and 23 mutually displaced by segment. Dashes 24 and 25 show the positions of the workpiece. Placer 26 blanks located under the gripping body.

The gripping organ for oblong workpieces works as follows.

From the placer 26 blanks after contact with its upper layer of the ends 12 and 13 of the screen 10 of the magnet 11, the holder captures one or more blanks. In this case, if the blank with its plane covers a large area at the end face 13 of the magnet 11, it is held securely. In the event that the workpiece covers a small area, due to the asymmetry of the location of the tearing moment

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exceeding the holding moment, and - cooking 9 hangs vertically, which is undesirable, since its subsequent orientation will be difficult. In both cases, the workpiece 9 hangs asymmetrically relative to the longitudinal axis of the housing 3 in the position shown in FIG. 1. At the same time, the moment of force P with a shoulder a relative to point P that separates the workpiece (dotted line 24) exceeds the holding moment of force P with shoulder b. Therefore, the blank for a number of reasons, for example due to the location of other blanks on it, occupies a vertical position. Similarly, the workpiece tearing off (dotted line 25), the moment of force F ,, with the shoulder c relative to point P, exceeds the holding moment of force Pj, with the shoulder d.

It is characteristic that the symmetrical arrangement of the workpiece 9 on the magnet 11 is practically eliminated (Fig. 3), since the holding force of the workpiece is absent with this arrangement of the magnet poles.

In order to eliminate the vertical position of the workpiece, it is necessary to move the workpiece to one of the poles and at the same time turn the workpiece 9 by 90 °.

The holder 8 is raised. The rollers 15 interact with the cam 21, and the roller 16 with the cam 22, moving 20 cam lobes on the working surfaces. In this case, the workpiece 9 moves to the left and is held the stronger, the closer to the pole it is located, while its lower end moves to the left. Having passed the surface 20 on the cams 21 and 22, the rollers 15 and 16 stop working and the rollers 17 and 18 come into contact with the working surfaces 20 of the cams 23. by the action of inertia forces and magnetic forces at 90 ° and is located in the plane of the ends 12 and 13. The distance of the cam pairs displacement should be set so as to ensure the free swing of the casing 3. Includes distortions and premature wear of the g-side tape 3.

Next, the workpiece rises in the zone of action of the orienting elements A

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FIG. 2

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Claims (1)

Formula of the invention A gripping body comprising a rod mounted with a possibility of reciprocating movement in the vertical direction, a vertically mounted rod mounted on the drawbar, a holder ⁵ mounted on the rod with a magnet and a sleeve guiding the rod, characterized in that, in order to expand technological capabilities by providing capture elongated in terms of blanks, it is equipped with copiers located at different levels in the same vertical plane on both sides of the rod, the rod with with abzhen bar 15 with a roller at the ends installed with the possibility of interaction with copiers, the magnet poles are located in a horizontal plane, and the rod is made in the form of a flexible element. FIG. 3