SU523013A1 - Device for feeding and orientation of sheet material - Google Patents

Description

one

The invention relates to devices for feeding and orientation of sheet material of low rigidity and can be used, for example, in the tire industry for feeding and orientation of cord bands.

A similar device is known, comprising a feeding mechanism and an orientation tool with a carriage 1.

In the known device, the orientation tool is made in the form of rollers and an abutment mounted on the carriage.

When mixed, enny carriage rollers push sheet. Due to the frictional force between the rollers and the sheet, the latter is shifted towards the side abutment. The orientation of the sheet in the longitudinal direction is determined by the rotating rollers, and in the transverse direction by the side stop.

However, such a device cannot be used for sheet materials with soft edges, where, due to the possible shrinking of the edges, the orientation accuracy is significantly reduced.

The aim of the invention is to improve the orientation accuracy of the sheet material.

This goal is achieved by the fact that the device has clamping strips mounted on the carriage for rotation and a photosensor for stopping the feeder.

whose optical axis is aligned with the axis of rotation of the pressure bars.

FIG. 1 shows a diagram of the device, front view; in fig. 2 - the same, side view; on

FIG. 3-6 is an example of the implementation process of the orientation of the sheet material.

The device for feeding and orientation of the sheet material comprises a feeding mechanism including a conveyor 1 and means

sheet orientation, which contains clamping bars 2 and 3. The bar 2 is spring-loaded relative to the electromagnetic bar 3. The bar 3 is rigidly connected by means of the lever 4 to the shaft 5. The shaft 5 is movably fixed in bearings 6 and 7, which are rigidly mounted on the movable carriage 8. Shaft 5 kinematically connected through a gearbox 9 with an electric motor 10 rigidly mounted on a carriage 8. The carriage 8 is mounted on rails

M, which are fixedly mounted on the bed 12. The carriage 8 is kinematically connected by means of a spindle 13 with an electric motor 14.

The photosensor for stopping the feeding of sheet material 45 is rigidly fixed to the bracket 16, which, in turn, is fixedly mounted on the carriage 8. In this case, the optical axis of the photosensor 15 is aligned with the axis of rotation of the shaft 5 and crosses the alignment line 17

transverse edge of the sheet.

The sensors for monitoring the position of the transverse edge 18 and 19 are fixedly mounted on the support 20 symmetrically with respect to the alignment line 17 with a certain gap.

The sensors for monitoring the position of the longitudinal edge 21 and 22 are also fixedly mounted on the support 20 symmetrically with respect to the alignment line of the longitudinal edge 23 with a certain gap.

The size of the gap between the sensors 18, 19 and 21, 22 is determined by the required accuracy of the sheet orientation in the transverse and longitudinal directions, respectively.

The device works as follows.

Sheet 24 is conveyed by conveyor 1 through clamping strips 2 and 3 to the orientation position. The feeding of the sheet 24 is stopped when the beam 25 falling from the illuminator 26 overlaps the photosensor 15 with its transverse edge. At the same time, the movement of the conveyor 1 stops and the sheet 24 is firmly gripped by the pressure plates 2 and 3.

A further orientation process is more convenient to consider using the example shown in FIG. 3, 4, 5, 6.

FIG. 3 shows one of the possible cases of displacement of the transverse 27 and longitudinal 28 edges of the sheet 24 relative to the alignment lines 17 and 23. Sensors il8, 19 for monitoring the position of the edge 27 determine the direction of rotation of the clamping strips 2 and 3 with the rigidly gripped sheet 24. In this case, the direction of rotation clamping slats - clockwise. When the strips 2 and 3 are rotated relative to the sensor 15 as a center of rotation, the edge 27 also performs a rotational movement. The rotation of the strips with the captured sheet stops when the edge 27 coincides with the alignment line 17, which corresponds to the overlap of the edge 27 of the photosensor 18 (Fig. 4).

Then, the longitudinal edge 28 is aligned with the line 23. Photosensors 21 and 22 serve to determine the direction of movement of the strips 2 and 3 with the captured material 24. In this case (Fig. 4), the direction of movement is from left to right. The movement of the strips 2 and 3 with the sheet 24 is carried out until the edge 28 coincides with the alignment line 23 (Fig. 5), which corresponds to the opening of the photosensor 22. This completes the orientation process. The edges 27 and 28 are oriented relative to the lines 17 and 23. For all other possible cases of the displacement of the edges 27 and 28 relative to the lines 17 and 23, the orientation process is carried out similarly.

After the orientation process is completed, the clamping strips 2 and 3 open, releasing the sheet 24. The oriented sheet 24 is captured and processed by subsequent technological machines (not shown). At this time, the clamping strips 2 and 3 return to their original position (Fig. 6). Then the cycle of operation of the device for feeding and orientation of the sheet material is repeated.

This device provides high accuracy of orientation of the longitudinal and transverse edges of the sheet material with both hard and fairly soft edges.

Claims (1)

Invention Formula A device for feeding and orienting sheet material, comprising a feeding mechanism and orientation means with a carriage, characterized in that, in order to improve the orientation accuracy, the device has pressure bars installed on the carriage with rotatable capability and a photo sensor for stopping the feeding mechanism whose optical axis is aligned with the axis rotation of clamping slats. .ig 6