CN2846368Y - Air exhaust type folding friction roller - Google Patents

Abstract

The utility model relates to an air exhaust type winding friction roller, which belongs to a friction winding coiling member in a casting film producing line. When small-bore rill bits drill through a cylinder type roller surface made of metal materials, small dense through holes which are regularly distributed are formed. When a thin film is wound at high speed, air between the thin film and the friction roller surface can be vented from the small holes quickly. The thin film is tightly stuck on the friction roller surface to wind a winding roller. A film coil is smooth, and the product quality is ensured.

Description

Exhausting rolling friction roller

The utility model relates to a kind of friction roller of film friction rolling, belongs to the parts that batch of casting films manufacturing line film take-up.

Background technology

At present, in the cast film production technology, the friction roller of film take-up is the rubber friction roller that posts rubber with roller surface, on this rubber roll surface, be carved with bull and staggered plug helix, when rolling, the air of clamping is discharged from plug helix between film and the rubber friction roll surface, make film be close to rubber roll, after the wind-up roll rolling, this rolling method only is applicable to that the low speed rolling is when the rolling of film high speed, air between film and rubber friction roll surface has little time to get rid of, cause to have a small amount of gas, because the existence of gas, film can not be close to roll surface, cause that film rises, and influences film quality.

Summary of the invention

For overcoming the deficiency of rubber friction roller rolling in the existing film production, the utility model provides a kind of exhausting rolling friction roller, and this roller is the rolling of energy high speed when film take-up, and mould is rolled up smooth smooth, guarantees product design.

The scheme that the utility model technical solution problem is taked is: on the cylindrical shape friction roll surface of being made by metallic material, mark bipitch helical line and axial mean line, intersection point at helix line and mean line, drill through with the small-bore drill bit, aperture is distributed on the roll surface regularly, and when the rolling of film high speed, film drains from aperture fast with the air of friction roll surface clamping, make film be close to the friction roll surface, finish the rolling of wind-up roll high speed.

The beneficial effects of the utility model are: in cast film is produced, can realize the high speed rolling of film, film is rolled up smooth smooth, has guaranteed product design, and is simple in structure.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a constructional drawing of the present utility model.

Fig. 2 is work scheme drawing when A-A section-drawing and film take-up among Fig. 1.

Among the figure, 1. film, 2. pressure roller, 3. friction roller, 4. wind-up roll.

In Fig. 1, on the roll surface of friction roller (3), by formula: helical angle equals helical pitch and removes in the formula of reference circle and circular constant product, the setting helical pitch is an integral value, calculate helical angle, again by friction roll surface axial mean line equal helical pitch remove in the aperture about, determine that the mean line number is an integer, chooses the small aperture drill bit.Mark helix line and mean line,, drill through, make the aperture clocklike that gathers on the whole roll surface with the small-bore drill bit at the intersection point of two lines.

In Fig. 2, pressure roller (1) is near friction roller (3), to the generation precompressed of film (1), wind-up roll (4) produces precompressed compression to friction roller, film, when friction roller is driven rotation near friction roller (3), drive wind-up roll, pressure roller rotation, finish the rolling of film high speed.

Claims (1)

1, a kind of exhausting rolling friction roller, the cylinder type roll surface by metallic material is made has densely covered small through hole, it is characterized in that: on roll surface, mark bipitch helical line and axial mean line, at the intersection point of helix line and mean line, drill through with the small-bore drill bit, aperture is distributed on the roll surface regularly.

Images