DE7613885U1 - SETTING DEVICE - Google Patents

Description

BASF Aktiengesellschaft j

Our reference: O = Z. 31 973 Sp / P 67OO Ludwigshafen, April 28, 1976

Adjustment arrangement for the axial displacement of a knife shaft

The invention relates to an actuator arrangement: for controllable axial displacement of an axially displaceably mounted knife shaft of a cutting machine for cutting of webs.

In a known adjusting device, the center is one of the Front sides of the knife shaft to be set axially connected loosely to the tip of an axis parallel to this * This axis is guided in a holder by means of a thread and by turning its adjusting wheel or = with the help of an adjusting gear displaceable in the direction of the knife shaft, a scale being provided to indicate the displacement path. To the The center of the shaft face is centered on the center of the shaft face, and the center point of the shaft tip engaging the knife shaft and better guidance provided with a hole «

Such an adjusting mechanism is simple in construction and allows both coarse and fine displacements of the Knife shaft. The finest settings, however, for the cutting quality r Actuating gear can only be made with great difficulty and in a hardly reproducible manner »

The task of Krfir.dung is to address these disadvantages of the known Actuator to distribute ..

Ger.äP of the invention serves the purpose that the Kesserwellener.de the knife shaft to be set with the axis one actuated by means of a pressure medium, on a holder attached Stellzy lir.oers is connected, the axis with a measuring device indicating the displacement path is connected.

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A preferred embodiment of the adjusting arrangement according to the invention consists in that? the actuating cylinder is a pressure chamber formed in a housing in a manner known per se from center parts and two rolling diaphragms, which is connected to a pressure medium system ₃ wherein the axis with the center; share is connected and on the one hand engages in the center bore of the axially displaceable cutter shaft and on the other hand engages the axis on the measuring sensor of a dial gauge to display the axial displacement of the cutter shaft.

The adjusting arrangement according to the invention enables axial adjustments finely dosed with a knife shaft and measured by measuring the actuating force via a manometer and measuring the displacement j path exactly reproducible. The positioning arrangement is suitable for subsequent installation in existing cutting i

machinery.

Below is with reference to the drawing an embodiment of _'f Stelianordnung the invention described: t

Read from three dividers screwed together. 1 * 2 _S 3 existing I.

i housing aes üteiizyimücraj Uc ₁ j ... Jcr drawing _r. Lunchschnz * t is _{shown, has a recess ^ 3} on the front side of the lower housing part 1 'with which the adjusting cylinder is centered on the flange of the bearing bush when screwing to the outside of one of the bearings of the knife shaft 20, a centering is also at least two fitting screws possible = Zv / regard housing lower part 1 and housing 'central part 2 is a rolling diaphragm 5 and between ^housing:: = SLttelteil 2 and Gehäuseobertei1 3 is a further, smaller rolling membrane 6 clamped in the center of the housing I ₃ 2, 3 is a spindle 10 arranged displaceably, the ir.it engages with its pointed end 11 for the axial displacement of the knife shaft 20 through an opening in the end wall of the lower housing part 1 in the center bore of the knife shaft 20 together with a nut 9 screwed onto the other end of the axle 10, a cover 8

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With the contour of the housing interior and an intermediate piece 7 with a T-profile clamped in place, the larger rolling membrane 5 on the one hand and the smaller rolling membrane 6 between the nut 9 and the intermediate piece 7 on the other hand are clamped in between the cover 8 and the intermediate piece 7. The axis 10 is thus essentially guided in the housing 1, 2 by means of the rolling diaphragm 5 j 6. A helical spring 12 supported on the end wall of the lower housing part 1 is arranged on the axis 10, which presses the axle collar 13 and whose restoring force is between 500 and 2,000 p, preferably between 6C0 and 850 ρ. The measuring sensor 15 of a dial gauge 16 is placed on the end face of the axle end 14 protruding through an opening in the upper housing part 3. This is carried by a holder 17 which is fastened to the end face of the upper housing part 3. For the axial displacement of the knife shaft 20, the chamber in the housing 1, 2, essentially formed by the two rolling diaphragms 5, 6, is pressurized with compressed air, for example, the pressure being adjustable by means of a commercially available, controllable pressure reducing valve 18 equipped with a manometer . At the Keßuhr 16, the axial displacement of the knife shaft can then be dlrceicSci'i ;; crdcr. _o Ir. drudileccr. Zuetar.i ces? Tel Ί ™ Ή nrißi-s ωίττ: the axis 10 removed from the knife shaft by the helical spring 12 and brought into its rest position »

The effective actuating force F (in kilopond) of the actuating cylinder is calculated according to the relationship

F _s (99 _i 78) = [A ₁ - A ₂ ]

ρ - F _F

from the following sizes, with the values given in brackets an embodiment of the actuating arrangement according to the invention affect:

A ₁ = Z? / Linder area of the large rolling membrane in cm (38.5)

■ * ■ p

Ap = cylinder area of the small rolling diaphragm in cm (7.1)

2 ρ = pressure displayed on the manometer in kp / cm (3.2) Fp = restoring force of the helical spring in kp (0.7)

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The rolling friction of the rolling diaphragm should be negligibly low.

The pressure and travel indicators provide data related to the cutting results when setting the knife shaft can be compared so that, for example, the setting of the knife shaft is optimized by means of a statistical evaluation v / can earth. There is also the shift length depending on the pressure the knife shaft 20 information) about the accuracy of the distance between the lower and upper knives and the condition the knife, as the one necessary for a certain displacement length Force depends on the number of lower and upper knives that come into contact at the same time.

7613885 2i.io.76

Claims (1)

1. Adjustment device for controllable, axial. Adjustment of an axially displaceably mounted M3sserv? Elle of a cutting machine for cutting Uareno ancestors, characterized in that an axis (10 which can be engaged at the knife shaft end of the knife shaft to be adjusted) has a stub cylinder (19 ~) which can be actuated by means of a pressure medium and is fastened to a holder V..rschicbungsv; eg the axis (10} indicating measuring device (I j) is in connection. 2. Interest sub-device according to claim 1, characterized in that the actuating cylinder (19) is one in a housing (1, 2, X in per se known "./eise from center parts {'J, I, 9) and two RoI! membranen (7, 6) is formed Druckkai.imer, which is connected to a Druckruittelsystem, v; obei di ^; axis (ic) with the central parts Ie ^ (7, £ ,, 9} in connection and on the one hand in the center bore of the knife shaft (20 'to be pushed axially) is designed to be engaged and, on the other hand, the axis (10) ai .. measuring sensor (15) a dial gauge to display the axial displacement of the knives shaft (20) engages. Chairman of the Supervisory Board: Bernhard Timm
Board of Directors: Matthias Seefelder, Chairman;
Hans Moell, slollv. Chairman; Ernst Donzel; Friedrich Dribbusch; Berthold Frank. Erich Henkel; Horst Pommer; Herbert Willersinn; Nbers; Hans Joachim Witt 10/21/76 Company headquarters: 6700 Ludwigshafen Register court: Ludwigshaien District Court, Registration number: HRB 2000