SPREADER ROLL

Abstract

The invention relates to a device, comprising: a spreader roll (2), the spreader roll having a roll tube (3), over which a material web is guided, the bending of the spreader roll (2) about its longitudinal axis allowing the material web to be spread out; and two bearing journals (4), which are operatively connected to the roll tube (3) and are pivotably articulated in a machine frame (1), the bearing journals (4) being mounted on the machine frame (1) by means of pivotable bearings (6) and the bearing journals having longitudinal pins (5) protruding beyond the bearings (6), at the ends of which longitudinal pins radially acting adjustment means (7) are positioned.

Claims

1. An apparatus comprising: a machine frame; a spreader roll having a roll tube over which a material web is guided so that bending of the spreader roll relative to its longitudinal axis can spread the web width-wise; respective bearing pins fixed in ends of the roll tube and projecting axially outwardly therefrom; respective journals pivotable on the machine frame and in which the bearing pins are journaled, the bearing pin having axially outer ends projecting axially outward past the bearings; and respective radially acting adjusters braced radially between the outer ends and the frame.

2. The apparatus according to claim 1, wherein the adjusters engage casings of bearings of outer bearing-pin ends.

3. The apparatus according to claim 1, wherein the adjusters are movable angularly of the spreader roll.

4. The apparatus according to claim 1, wherein the adjusters are each mounted on a respective sleeve that is pivotal in the machine frame and that is provided with a rotary drive.

5. The apparatus according to claim 4, wherein the rotary drive is effective angularly.

6. The apparatus according to claim 1, wherein the adjusters each have a threaded spindle with an adjustment nut.

7. The apparatus according to claim 6, wherein the adjustment nut has a rotary drive.

8. The apparatus according to claim 1, wherein the pivotable bearings are self-aligning multi-row ball bearings, and are each arranged approximately in an axial center of the respective bearing pin.

9. The apparatus according to claim 1, wherein the bearing pins are each supported in the roll tube by two respective axially spaced self-aligning bearings.

10. The apparatus according to claim 1, wherein the bearing pins are fixed in the roll tube.

11. The apparatus according to claim 1, wherein the bearing pins are part of a shaft carrying the roll tube.

12. The apparatus according to claim 1, wherein the adjusters with regard to the effective direction of the force for generating the bending moment extend parallel or at an angle to one another.

13. The apparatus according to claim 1, further comprising: a sensor for determining bending of the roll tube at the adjusters.

14. An apparatus comprising: a machine frame; an elastically deformable roll tube centered on and extending along a roll axis; axially spaced main bearings supporting the roll tube on the frame for rotation about the axis; pins extending axially, oppositely, and outwardly of the main bearings from the tube; respective deflection bearings on the pins axially outward of the respective main bearings and each pivotal on the frame about a bearing axis transverse to the roll axis; and respective adjusters each braced radially between a respective one of the deflection bearings and the frame for bending the roll tube.

Description

[0014] An embodiment of the invention is shown in simplified form in the drawings. Therein:

[0015] FIG. 1 is a side view of an apparatus with a spreader roll,

[0016] FIG. 2 is a section through the apparatus and the spreader roll according to line A-A of FIG. 1,

[0017] FIG. 3 is an end view of an apparatus with a spreader roll of modified design,

[0018] FIG. 4 is an end view opposite that of FIG. 3,

[0019] FIG. 5 is a section through the apparatus according to line C-C of FIG. 4,

[0020] FIG. 6 is a side view of an apparatus with a spreader roll, and

[0021] FIG. 7 is a section through the apparatus according to line A-A of FIG. 6.

[0022] FIGS. 1 to 7, as far as shown in detail, illustrate a machine frame 1 holding and supporting a spreader roll 2. The spreader roll 2 has a tube 3 with ends secured in respective bearing pins 4. Ends of the bearing pins 4 projects axially from respective ends of the tube 2 and the pins 4 are journaled approximately in their axial middles in the machine frame 1. There are thus rocker bearings at which the bearing pins 4 are pivoted. The outer ends 5 of the bearing pins 4 are seated in bearings on engaged radially by respective adjusters 7 for radial pivoting. The adjusters 7 each carry a threaded spindle with an adjustment nut 8 supported in turn on a sleeve pivotably mounted in the machine frame 1. The nut 8 can be operated by hand or by a drive. Rotating the sleeve together with the adjuster 7 by a rotary drive 9 can change the direction in which the bearing pins 4 are pivoted and thus the direction of bend of the roll tube 3.

[0023] The roll tube 3 can be supported on each of the bearing pins 4 by two axially spaced bearings. The roll tube 3 is in this case driven by an independent drive. When the bearing pins 4 are fixed in the roll tube 4 as shown in FIGS. 5 to 7, the same drive rotates both the bearing pins 4 and the roll tube 3.

[0024] The bearing pins 4 can, however as shown in FIGS. 6 and 7 be parts of a shaft 7, on which a roll tube 3 is fixed. It is also possible that the shaft itself forms the roll tube

LIST OF REFERENCE SYMBOLS

[0025] 1 machine frame [0026] 2 spreader roll [0027] 3 roll tube [0028] 4 bearing pins [0029] 5 axially extending pins [0030] 6 bearings [0031] 7 adjuster [0032] 8 adjustment nut [0033] 9 twisting means [0034] 10 measuring equipment