SU1278787A2 - Reel for automatic charging of rolled photographic material - Google Patents

Abstract

This invention relates to devices for winding wide-format photographic materials in. kinotehnike. The purpose of the invention is to increase the reliability of the photographic material. For this, on the cylindrical surface of each eccentric ring 4 placed in the bearing unit 3, ski slopes 10 are made, symmetrically to each of which a groove 11 is made on the surface of the guide bar 8. The material introduced into the gap is fixed when the coil is rotated around its axis. When the photographic material comes into contact with the outer surfaces of the bank-protrusions 10, it becomes jammed, which is intensified due to the presence of corrugations on the rings 4. The rigid mutual disposition of the guide bar 8, rings 4 and cylindrical bushings 5 is provided with flanges 13 and screws 14 .. 2 Il. MS)

Description

eleven

The invention relates to instrumentation, and more specifically to devices for winding wide-format photographic materials in film engineering, and is an improvement of the coil according to the author, St. No. 1068875.

The aim of the invention is to improve the reliability of the retention of photographic material.

FIG. 1 shows a coil, a general view; in fig. 2 shows section A-A in FIG. one.

The coil contains two flanges 1, fixed on axis 2, on which eccentric rings 4 are placed in bearing assemblies 3, alternating with cylindrical bushings 6 with flats fixed with keys 5. Between the rings 4 and the sleeves 6 there are mounted the sleeves 7. Between the flanges 1 above the sleeves 6 on the side of the bald spots with a gap, a guide bar 8 is installed. On the eccentric rings 4 there are grooves 9, forming at the same time the skips 10, - ke 8 has grooves 11, each of which is located symmetrically corresponding to the sku-ledge 10. The outer surfaces of the guide bar 8 and the cylindrical sleeves 6 form the initial diameter of the coil winding of the photomaterial 12, the outer surface of the eccentric rings 4 are grooved Oh. The rigid mutual arrangement of the guide bar 8, the eccentric rings 4 and the cylindrical sleeves 6 is provided with flanges 13 and screws 14.

78787 2

The coil works as follows.

The end of the photographic material 12 is inserted.

5 into the gap a, while the guide Sh1a: nka 8 is in the upper position, and the eccentric rings 4 are turned downwards due to the displaced center of mass. The fixation of the photomatte 0 of rial 12 occurs when the coil is rotated around its axis. The gap a decreases as the coil rotates, and when the inner surface of the guide bar 8 with the grooves 11 causes the photographic material 12 in the gap and in contact with the outer surfaces of the strips 10 of the rings 4, it becomes jammed. The presence of corrugations on the rings

 4 enhances the wedging effect, and the reliability of fastening is increased due to the deformation of the photographic material in conjugated pairs along scaffoldings 10 and grooves 11.

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Claims (1)

1 The invention relates to instrumentation engineering, and more specifically to devices for winding wide-format photographic materials in film engineering, and is an improvement of a coil according to the author, St. No. 1068875. The aim of the invention is to improve the reliability of the retention of photographic material. FIG. 1 shows a coil, a general view; in fig. 2 shows section A-A in FIG. 1. The coil contains two flanges 1, fixed on axis 2, on which eccentric rings 4 are placed in bearing assemblies 3, alternating cylindrical bushings 6 rigidly mounted with splines 5 with flats. Between the rings 4 and the sleeves 6 there are mounted the sleeves 7. Between the flanges 1 above the sleeves 6 on the side of the flats, a guide bar 8 is installed with a clearance 8. On the eccentric rings 4 there are made grooves 9, which form at the same time ke 8 has grooves 11, each of which is located symmetrically corresponding to the sku-protrusion 10. The outer surfaces of the guide bar 8 and the cylindrical sleeves 6 form the initial diameter of the coil winding of the photomaterial 12, the outer surface of the eccentric rings 4 is grooved . The rigid mutual arrangement of the guide plank 8, eccentric rings 4 and cylindrical sleeves 6 is provided with flanges 13 and screws 14. 72 The coil operates as follows. The end of the photographic material 12 is inserted into the gap a, while the guide Sh1a: nca 8 is in the upper position, and the eccentric rings 4 due to the displaced center of mass are turned down. The fixing of the photographic material 12 occurs when the coil is rotated around its axis. The gap a decreases as the coil rotates, and when the inner surface of the guide bar 8 with the grooves 11 causes the photographic material 12 in the gap and in contact with the outer surfaces of the strips 10 of the rings 4, it becomes jammed. The presence of corrugations on the rings 4 enhances the wedging effect, and the reliability of fixing is enhanced by the deformation of the photographic material in conjugated pairs along the ridges 10 and grooves 11. The invention The coil for automatic charging of the rolled photographic material according to ed. St. No. 1068875, characterized in that, in order to increase the reliability of holding the photographic material on the cylindrical surface of each eccentric ring, it is made. there are slots, each of which is located symmetrically with the eccentric ring on the sku-protrusion.