SU1646859A1 - Vacuum hold - Google Patents

Abstract

The invention relates to mechanical engineering, in particular, to devices for gripping and rotational orientation of parts made of sheet material. The purpose of the invention is to simplify the design and expand the technological capabilities. On the sleeve 7 mounted on the housing 1, a suction cup 8 is fixed, and on the end of the sleeve facing the bark, an annular groove 9 is formed, which forms an annular chamber with the surface of the housing. Tangential channels are made in the walls of the sleeve 7 in the form of cylindrical holes or in the form of curved grooves connecting the annular chamber with the atmosphere. An additional channel 14 and a drainage channel 15 associated with it are made in the housing. At the end of the stop 23 mounted on the slider, a nozzle 25 is fixed, connected to the outlet of the drainage channel. 1 hp f-ly. 5 il.

Description

The invention relates to mechanical engineering, in particular, to devices for gripping and orienting in rotation angle of parts made of sheet material.

The aim of the invention is to simplify the design and expand the technological capabilities.

Figure 1 shows the vacuum capture, general view; Fig. 2 shows a section A-A in Fig. 1 (embodiment of the channels); in FIG. 3, the same embodiment of the channels; figure 4 is a variant of the installation of the stop; figure 5 - option installation stops.

The vacuum gripper comprises a housing 1 fixed to the manipulator 2, an ejector, the chamber 3 of which ends with a nozzle formed in the bar 4. On the housing on the axis 5 in which the hole 6 is made, the sleeve 7 is rotatably mounted.

A suction cup 8 is fixed to the sleeve, and an annular groove 9 is formed on the end of the sleeve facing the housing, forming an annular chamber with the surface of the housing. In addition, in the walls of the sleeve is made tangential channels 10. They are made either in the form of cylindrical holes, or in the form of curved grooves 11.

The vacuum chamber of the ejector is connected to the suction cup cavity by a hole 12. The pipe ends 13. In addition, an additional channel 14 and a drainage channel 15 connected to it are provided, and a check valve 16 is installed with a spring 17.

A nozzle 18, a hose 19 and a nozzle 20, which is part of a slider 21 placed in a groove 22, are fixed at the outlet of the drainage hole body. A stop 23 is fixed to the slide, fixed by a nut 24. The nozzle 25 is fixed to the end face of the support 23 and connected to the outlet of the drainage channel . The nozzle is aimed at the captured part.

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A screw 26 is screwed into the housing with the possibility of blocking the drainage channel. The device is equipped with a bracket 27 mounted on the axis 28 with the possibility of rotation and fixation in the required position.

The bracket can be made in the form of a plate 29, also installed with the possibility of rotation relative to the housing with fixation on the cylindrical groove 30 by means of a screw 31.

The gripper serves to manipulate the part 32.

The operation of the device is performed in the following sequence.

The gripper arm 2 is lowered onto the unoriented angle of rotation of the part 32, which is accompanied by the inclusion of compressed air into the ejector. As a result of the discharge in the suction cup 8, a force is created enough to hold the part. At the same time, the air enters through the channel 14 into the annular groove 9, and through the drainage channel 15 through the nozzles 18, 20, the hose 19, the opening of the stop 23 - into the nozzle 25. From here it flows out towards the part to be gripped.

From the groove 9, the air passes through the channels 10 to the atmosphere and creates a torque sufficient to rotate the suction cup 8 with the part. The rotation of the latter is carried out until the profile element (hole) present on the part is against the air stream flowing from the nozzle 25. The air pressure in the drainage channel 15 drops due to a decrease in the pneumatic resistance, the check valve 16 is activated. the groove 9 stops the suction cup 8 with the part. Moreover, the orientation of the part on the angle of rotation is achieved by installing the stop 23 in a predetermined position.

Screw 26 provides regulation of the flow of air through the drainage channel 15.

When changing gears, the stop 23 is set in the desired position when the bracket is rotated and fixed with a screw.

Execution of the gripper according to the proposed scheme simplifies its design, expands technological capabilities by increasing the installation area of the support relative to the housing and ensuring work with parts having different profile elements.

Claims (2)

1. A vacuum gripper comprising a housing with an ejector, the vacuum chamber of which is connected to the suction cavity fixed on a sleeve mounted on the housing so as to be rotatable, the ejector inlet is connected to a source of compressed air and through a drainage channel made in the housing with the atmosphere, and there is a stop on the housing, which has the ability to interact with the gripped part, characterized in that, in order to simplify and expand technological capabilities, the end of the sleeve facing the housing is provided with an annular groove forming an annular chamber with the surface of the housing connected by an additional channel to the drainage channel, while tangential channels connecting the annular chamber with the atmosphere, and at the end of the stop there is an additional inserted nozzle connected to the outlet of the drainage channel; in addition, the stop is mounted on the housing with the possibility of movement and fixation. 2. The gripper according to claim 1, characterized in that a check valve is installed in the housing, which has the ability to close the drainage and additional channels. ABOUT) in with Od rf Ј  1 CDf Rig. $