DE2061131A1 - Device for tape control - Google Patents

Description

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DR. BERQ DIPL.-INQ. STAFF

PATEfMTAN WÄL.TE

CIBA-GEIQYAG β Munich so, mauerkircherstr. α

, BASEL, SWITZERLAND)

A nwaltsakte 20 373 Munich, December 11, 1970

Gases TEL-70

Device for tape control

The invention relates to a device for controlling tape travel with control rollers that are in order to be perpendicular to theirs Axes standing axes can be swiveled *

Such devices are used in processing of tape-shaped materials are preferably used for this purpose * the tape run at least in certain areas

BATH ORIGINAL

to control minimal lateral deviations.

In the previously known devices, the belt is appropriately pivotable via one or more Rolls deflected. Such a deflection within a straight path requires roller contact on both sides of the tape. The known devices are therefore poor or even at all for materials with a sensitive surface not suitable. This deficiency in particular is intended to be remedied by the invention.

The invention consists in that the control rollers are combined to form a roller train, which as a whole is pivotable about a common axis which is perpendicular to the roller axes, and that at least some of the spaces between the rollers communicates with a connector for a suction device.

The subject of the invention is based on the following an embodiment shown in the drawing

explained in more detail; show it:

Pig. 1 shows a floor plan,

Fig. 2 is a section along the line II - II of Pig. I and

FIG. 3 shows a section along the line III - III in FIG. 2.

The control rollers labeled 1-8 are combined into a flat roller train and on one Mounted tub 9, which can be pivoted about an axis 10 and is connected to a vacuum source via a pipe socket 11, in particular

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203 1131

a special suction pump (not shown) can be connected. The roller line 1-8 is one permanently mounted Infeed roller 12 and outfeed roller IJ upstream or downstream. These two rollers 12 and 15 are each over part their circumference by a baffle-like element 14 or 15 tightly encompassed, which elements are on the other hand in close sliding contact on the edge of the tub. The side ends of Rolling train 1-8, guide plates 14 and 15 and rolls 12 and IJ are designed so that if a belt is sufficient Width, which is denoted by B in the drawing figures is, on the rollers 1-8, 14 and 15, the tub 9 rests is closed as tightly as possible at the top, so that even with a relatively low suction power (via pipe socket 11) a there is sufficient suction between rollers 1-8, 12 and 13. The distances between the control rollers 1-8 are preferably on the order of a few tenths of a millimeter or millimeters. The distance between the infeed roller 12 and that of the outfeed roller 13 from the roller train is preferably a multiple of a roller diameter.

The band B sucked onto rollers 1-8, 12 and 13 by the negative pressure prevailing in the tub is blown through Pivoting of the roller train 1 - 8 by the angle / J ^

L, + L ₂ laterally offset by the amount C = g tg ^ /, where Lp is the distance

between the rollers 12 and 13 and with L ₁ the distance between the two outermost rollers 1 and 8 of the roller train 1-8

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BAD ORIQiNAU

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is designated. The two loops S ₁ and Sp at the inlet and outlet of the roller train 1-8 enable a friction-free, distortion-free and wrinkle-free web deformation,

In order to reduce the air loss and thus the required suction power to a minimum, the side ^ lent openings between the two loops S, and Sp to keep it as small as possible. The rollers 1-8 and / or 12 and IJ can run freely or can be driven by a motor.

The pivot axis 10 of the roller train (1-8) is arranged between the roller train and the infeed roller 12 with respect to the transport device, as shown. It can also be arranged between the roller train and the discharge roller 13 or 1 in such a way that it is the axis

the first or last roller 8 or 1 of the roller train or that of the infeed or outfeed roller 12 or 13 intersects in the geometric sense.

The belt control device according to the invention is preferably automatically regulated, the actual values of the tape track being determined by means of a scanner 16. In With respect to the Banrichtung, the arrangement of the axis of rotation 10 and scanner 16 can be chosen in the opposite sense. In In this case, the center of the strip remains on the center line of the pivotable roller train (1-8).

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Claims (1)

Expectations Device for belt control with control rollers, which are about axes perpendicular to their axes are pivotable, characterized in that the Control rollers (1 - 8) are combined to form a roller train which, as a whole, is arranged around a perpendicular to the roller axes standing common axis is pivotable, and that at least some of the spaces between the rolls with an (11}
final / communicated for a suction device. 2. Device according to claim 1, characterized in that that the control rollers (1 - 8) of the roller train are close together, preferably with gaps in the The order of magnitude of a tenth of a millimeter or a millimeter. 3. Device according to claim 1, characterized in that that on the inlet side at a distance from the roller train (l - 8) at least one of the swivel adjustments of the roller train independent infeed roller (12) is arranged, wherein the space between the roller train and the (11) Infeed roller also with the connection / for the suction device communicates. 4. Apparatus according to claim 1 or J>, characterized in that on the outlet side at a distance from the roller street (1 - 8) / from swivel adjustments of the roller train 109825/2123
BADORfQlNAL independent outlet roller '(lj5) is arranged, the Gap between the roller train and the outlet (H) roller also with the connection / for the suction device communicates. 5. Device according to claim 1 or 2, characterized in that that the roller train (1-8) forms a conclusion of a trough (9), which in turn is attached to the Suction device can be connected. 6. Apparatus according to claim 5 * characterized in that that the tub (9) is pivotable and the roller train (l - 8) is mounted on the tub in a rotationally fixed manner. 7. Apparatus according to claim 3 and 6, characterized in that that the infeed roller (12) is connected to the tub (9) by means of a guide plate-like element (14), this element rests tightly on the one hand on the roller circumference and on the other hand on the edge of the tub. 8. Apparatus according to claim 4 and 6, characterized in that that the discharge roller (13) is connected to the tub (9) by means of a guide plate-like element (15) is, with this element on the one hand on the roller circumference and on the other hand tightly against the tub edge. 9. Device according to one of the preceding claims, characterized in that the control rollers (1-8) and 109825/2123 BATH ORIGINAL preferably also the inlet and outlet rollers (12 and 13) all lie on the same plane, IQ, "A device according to one of the preceding claims, characterized in ₃ that the pivot axis (10) of the WAI ^ zenstrasse regarding the transport direction before or after the middle of the rolling train is arranged, 11, device according to claim 10, characterized in that that the pivot axis (10) in the area of the first or last Control roller (8 or, 1) is arranged, 12. The device according to claim 10, characterized in that that the pivot axis (-10) is arranged in the area of the inlet or outlet roller (12 or 13). 13 · Device according to claim 10, characterized in that that the pivot axis (10) between the roller train and the Infeed or outfeed roller (12 or 13) is arranged. 10 9825/2 123 Blank page