SU1512898A1 - Device for conveying tape material - Google Patents

Abstract

The invention relates to machines for transporting flexible ribbon-like material, in particular to machines for applying photoemulsion layers in the production of photosensitive materials. The purpose of the invention is to improve the performance properties by increasing the uniformity of the material feed. The device eliminates the speed fluctuations of the ribbon-like material with the help of dynamic oscillation dampers mounted on the axis of the rollers, the natural frequencies of which are distributed in the range of 1-50 Hz. Under the action of the pressure differential created in the dilution chamber, the substrate is pressed against the surface of the rollers, the axes of which have free rotation in the bearing supports. When a disturbance occurs, the frequency of which approaches one of the natural frequencies of the section, the resonant oscillations are suppressed by the dynamic absorber that is tuned to this frequency. 1 hp f-ly, 2 ill.

Description

 . The invention relates to machines related to the transportation of flexible ribbon-like material and can be used in units for applying various kinds of liquid coatings to a flexible moving substrate, in particular photo emulsion in the production of photosensitive materials.

The purpose of the invention is to improve the performance properties by increasing the stability of the material feed.

Figure 1 shows the device, top view; figure 2 - the same, side view.,.

The device has several rollers 1, freely mounted axes 2 fe of the bearing supports 3, and a dilution chamber 4 adjacent to them on one side, and a support 5 on the other side. On the axes 2 rollers are mounted and rigidly fixed to the mounting diameter dynamic absorbers of 6 oscillations, the eigenfrequencies of which coincide, up to the established detuning, with the eigenfrequencies of the irrigation section of the tape path of the unit and are distributed in the range of 1–50 Hz.

Dynamic vibration dampers are mounted in the form of discs from elastically3151

mostly rubber

th material

and installed one at a time on the free ends of the axes of each of the rollers

alternately with their opposite

ron

The device works as follows.

Under the action of the pressure differential, the substrate 5 is pressed against the surface of the rollers 1 and, in its movement, causes them to rotate. When a disturbance occurs on a tape irrigation section, the frequency of which approaches one of the natural frequencies of the section, the resonant oscillations are damped by that dynamic absorber, the frequency of which turns out to be tuned to this frequency. Since the setting of the damper is equivalent to the introduction of an additional elastic coupling into the system, the rigidity of which increases when the disturbance frequency approaches the damper natural frequency, each dynamic damper dampens oscillations in a certain narrow frequency range, and when the eigenfrequency distribution is received, all installed on the roller table Dampers eliminate longitudinal

Claims (2)

1. A device for transporting tape material, containing a number of aliks, tracks set independently in supports with the possibility of free rotation, and a vacuum chamber adjacent to the rollers to create a vacuum in the gaps between the rollers, characterized in that In order to improve the performance properties by increasing the stability of the material supply, the rollers supply the substrate with 5 oscillations in all indicated by 30 dynamic vibration dampers. N frequency range from 1 to 50 Hz. This is achieved by stabilizing the speed of movement of the substrate in the site of photocell application. The use of the invention allows to improve the quality of photosensitive materials on a flexible substrate. Achieved by increasing the reliability of the process will reduce the loss of scarce raw materials and 40 times of emergency downtime of the unit. natural frequencies of which are distributed in the range of 1-50 Hz, 2. The device according to claim 1, about tl and - so that the dynamic vibration dampers are made in the form of discs of elastic material, installed one at the free ends of the axes of each of the rollers alternately from their opposite sides. The execution of dampers in the form of discs of elastic material with a high coefficient of inelastic resistance allows for good dynamic characteristics of dampers without the use of special devices that create the effect of viscous friction. This leads to a simplified design of the quencher, ease of placement and ease of maintenance. The stabilization of the speed and tension of the substrate achieved thereby increases the reliability of the process and increases. Yields output of suitable products. Invention Formula 1. A device for transporting tape material, containing a number of aliks, tracks set independently in supports with the possibility of free rotation, and a vacuum chamber adjacent to the rollers to create a vacuum in the gaps between the rollers, characterized in that , in order to improve performance properties by increasing the stability of the material feed, the rollers provide dynamic vibration dampers natural frequencies of which are distributed in the range of 1-50 Hz, 2. The device according to claim 1, about tl and - so that the dynamic vibration dampers are made in the form of discs of elastic material, installed one at the free ends of the axes of each of the rollers alternately from their opposite sides. f 2