SU885964A1

SU885964A1 - Spool for automatic roll photographic material loading

Info

Publication number: SU885964A1
Application number: SU792710271A
Authority: SU
Inventors: Вячеслав Анатольевич Ефимов
Original assignee: Предприятие П/Я Р-6974
Priority date: 1979-01-08
Filing date: 1979-01-08
Publication date: 1981-11-30

Description

II

Изобретение относитс к кинотехнике, а именно к устройствам дл намотки широкоформатных рулонных фотоматериалов и может быть использовано во всех отрасл х народного хоз йства, где необходима намотка рулонных материалов.The invention relates to film engineering, in particular, to devices for winding wide-format rolled photographic materials and can be used in all industries of a national household where winding of rolled materials is necessary.

Известны катушки с подпружиненными фиксаторами, в которых закрепление свободного конца в зар дной полости осуществл етс за счет преодолени упругой деформации фиксирующих элементов при зар дке 1.Coils with spring-loaded latches are known, in which the free end is fixed in the charging cavity by overcoming the elastic deformation of the locking elements during charging 1.

Такое закрепление свободного конца затрудн ет зар дку широкоформатных рулонных материалов, а зар дку материалов с пониженной жесткостью таких как широкоформатна пленка на лавсановой основе , тонка рулонна фотобумага типа осциллографной и т. д., делает невозможной. Материал при этом гнетс и ломаетс . Закрепление на сердечнике материала не автоматическое .Such anchoring of the free end makes it difficult to charge wide-format roll materials, and charging materials with low rigidity, such as wide-format film on the lavsan basis, thin roll photo paper such as oscillographic, etc., makes it impossible. The material is pressed and broken. Fixing on the core of the material is not automatic.

Наиболее близким к предлагаемому вл етс устройство дл намотки рулонного фотоматериала, содержащее ось с ребордами , на которой эксцентрично расположен сердечник, и направл ющую (2.Closest to the present invention is a device for winding a rolled photographic material containing an axis with flanges on which the core is located eccentrically and a guide (2.

в этом устройстве направл юща дл фотоматериала своими кра ми, освободившимис от защемлени , .повреждает поверхностные слои фотоматериала, а в процессе намотки вместе с наматываемым фотоматериалом укладываетс на сердечник катущки, создава утолщение, привод щее к неравномерной плотности намотки.In this device, the guide for the photomaterial with its edges free from pinching damages the surface layers of the photomaterial, and during the winding process along with the photomaterial to be wound, it is laid on the core of the jigger, creating a thickening that leads to an uneven winding density.

Цель изобретени - упрощение конструк ции и обеспечение сохранности фотоматериала .The purpose of the invention is to simplify the construction and ensure the safety of photographic material.

Указанна цель достигаетс тем, что на10 правл юща выполнена в виде расположенной вдоль сердечника на рассто нии, равном на его эксц ентрйситету, планки, а сердечник свободно установлен на оси, внешн поверхность сердечника выполнена рифлений ., что повышает надежность закреплени конца фотоматериала.This goal is achieved by the fact that the governing board is made in the form of a bar along the core at a distance equal to its extent, and the core is freely mounted on the axis, the outer surface of the core is grooved, which increases the reliability of fixing the end of the photographic material.

На фиг. I представлена кату-шка, обилий вид; на фиг. 2 - то же, поперечный разрез.FIG. I presents the katu-shka, abundance view; in fig. 2 - the same cross section.

Claims

The coil contains flanges 1, axis 2, on which, in bearing assemblies 3 times 20 meshes, there is a rotatable excitric core 4. Charging cavity a is formed by the outer surface of the eccentric core 4 and the inner surface of the guide bar 5 and serves to charge the free end of the material 6. The guide the strap 5 is fastened to the axis 2 through the flanges 1 with the help of screws 7 and is installed along the core 4 with a gap equal to its eccentricity. The charge and automatic fixing of the free end of the material is carried out in the following ways. The free end of the aluminum 6 is pushed into the charge cavity a, the coils at the moment when the guide bar 5 is in the upper position. In this case, the cavity a is maximally opened and the free end of the charged material easily passes into the charge cavity between its forming surfaces. To automatically fix the free end, the material being charged is pushed into the charge cavity by an amount not less than 4/3 of the length forming the initial diameter of the coil winding. The fastening of the material occurs with the beginning of the winding prn turn the coil around its axis at an angle of 120 °. The value of the opening of the charge cavity decreases to a minimum and the internal noiBepxHocTb of the guide bar 5 comes into contact with the outer surface of the rotary eccentric core 4, the free end of the material is jammed, ensuring its reliable automatic fixing when the coil is wound. In addition, when unwinding the coiled material, a simple release from the fixed end occurs, which is provided by pulling the material in the direction opposite to the rotation of the roller during winding in the position when the roller is turned upward with the guide bar 5. The radial displacement of the surface of the rotatable eccentric core 4 relative to the internal surface of the guide bar 5- causes the fixed end to open, the charge cavity opens and the free end of the material can be removed easily and without damage. The proposed coil simplifies the charging of wide-format roll materials, ensuring the charging of materials of reduced rigidity, automatic and reliable fixing of the free end, and also ensures the safety of photographic material. Claim 1. A roller for automatic charging of a rolled photographic material, comprising an axis with flanges, on which an eccentric core is located, and guiding for the photographic material; However, in order to simplify the construction and ensure the safety of the photographic material, the guide is made in the form of a strip along the core at a distance equal to its eccentricity, and the core is freely mounted on the axis. 2. The coil of claim I, characterized in that, in order to increase the reliability of fixing the end of the photographic material, the outer surface of the core is made corrugated. Sources of information taken into account in the examination 1. US Patent No. 264659, cl. 242-74, publ. 1953.

2. USSR author's certificate No. 252860, CL. G 03 C 3/00, 1968 (prototype).

FIG. 2