EP0959166B1 - Device for treating a fabric - Google Patents

Abstract

The apparatus to mangle fabric piece goods (8) has a working roller which can be positioned. It has a roller drive (9) so that, when it is pressed against a counter roller (6), its rotation moves the fabric (8) through the press zone (7) between the two rollers. The support (3) is in front of the press zone (7), in the direction of working roller rotation (r), between it and the pressure body (4). The fabric (8) enters the press zone (7) between the support (3) and the counter roller (6). The support (3) has a flat support surface (30), across the peripheral surface (61) of the counter roller (6), at the fabric entry. The pressure body (4) has a flat press surface (40) at right angles to the flat support surface (30) of the support (3). The press body (4) is at the peak (51) of the working roller, or in front of the peak (51) in the direction (r) of roller rotation, defined by the gap A = d + D/2 from the axis (60) of the counter roller (6). d is the diameter of the working roller and D the diameter of the counter roller (6).

Description

The invention relates to a device for processing a Goods web comprising a device length extending stationary counter-roller, one for pressing against the latter shiftable work roll in proportion to the counter roll diameter small diameter, a pressing device, by means of which the work roll along one over through the working width and through the web Pressure zone can be pressed against the counter roller, the Pressing device a pressing body with a pressing surface has against which the work roll in its the pressure zone opposite circumferential area comes to the plant, and a with separate support element arranged from the pressing body a support surface on which the work roll in the pressing operation comes to the plant. Such devices are particularly as squeeze dyeing devices, i.e. for draining and dyeing webs saturated with color, so-called Foulards used.

A generic device is known from EP 0 534 930. There is a stationary and a movable bed each with at least one cylindrical contact body Press bearing of a work roll provided as a driven by a stationary counter roll Role is provided. The stationary pressure body is a Support body, which is essentially a passive back pressure body against the work roll exerted by the counter roll Driving force works. With such a known arrangement there are adverse wedge effects and force relationships between the pressure / support bodies. The run of the work roll is impaired, and difficulty reproducing Operating conditions can occur. Such disadvantage One tries to counter effects by the fact that camp beds provided with elastic pads and bend-adjustable rollers become. According to DE-U-296 19 695 it is proposed that Work roll in the contact position with three degrees of freedom Arrange movably, with a pressure body with a bed must be provided, in which the work roller engages. A stationary counter roll forms a drive roll around which Movement bearing of the pressure body in combination with the Allow work roll. In the event that in the work zone only a small frictional force acts Work roll to be driven additionally. With one Device becomes an automatic adjustment of the work role reached the operating state. In some cases, kick however, difficulties with reproducible machining results on.

In yet another device (US 2,878,778) one Web passed between two pressure rollers. Every pressure roller is mounted on a pair of counter rollers. One of the pressure rollers and the counter abutment rollers are driven. The The construction of the device is complex. With the multitude of Roles have problems with attitude, reproducibility and cleaning.

In contrast, the invention is based on the aim of a generic Device for processing webs in particular in terms of simple construction, setup and operability, Adjustability, work functions and results as well as to improve device cleaning.

These goals are combined with the characteristics of the beginning mentioned device achieved in that the relocatable Work roll is connected to a drive that does not affect the transverse mobility of the work roll and a circumferential drive for the counter-roller, which is supported in rotation forms, with the work roll in its driven and pressed position the web through the pressure zone drives the support element in the direction of rotation of the work roll considered, in front of the pressure zone in the area between this and the press body is arranged and the inlet of the web in the pressure zone between the support element and the counter roller is provided. An essential measure exists in that the work roll, its diameter in proportion to the counter roll diameter is small, such as the immediate one Drive source of the device forms that the counter roll is only rotated along the web without the latter is driven itself. The support element is on the Device side facing the web infeed regardless of the pressure device in the area between this and the counter roller intended. This arrangement of the support element before the pressure zone helps to ensure that the run in the pressure direction and stabilized work roll that can be moved transversely to it is. Otherwise, the drive is provided by the small roller for a particularly smooth and stable running of the rollers. Due to the arrangement of the support element in combination with the self-propulsion of the shiftable work roll and the The entrainment of the counter roller is dynamic force effects reduced to the support element. It’s also an advantage that, seen in the direction of rotation of the work roll, the peripheral region the same behind the pressure zone to the pressure device remains free. Armor and cleaning are essential simplified.

A particularly advantageous design is that the Press body and the support element in front profile view L-shaped with at least almost at right angles flat sliding surfaces are arranged. This arrangement is advantageously provided so that the lines of contact on the Work roll, viewed in the direction of roll rotation and starting from the contact line on the compact, at circumferential angular intervals 90 °, 90 °, 180 °. This is also a particularly low-wear and low-friction operation optimal reduction of surfaces sliding against each other.

In particular in connection with the aforementioned configurations it is particularly useful that the axes of the work roll and counter roll in a common, at least almost horizontal level, the web from below is led upwards and the work roll at least with the most of their own weight on the support body surface comes to lie. Especially for this device arrangement it is expedient that the pressing body is designed as a plate is that on the device side having the web outlet removable between the work roll and a pressure generating device the pressing device can be placed. Of special It is also an advantage if the pressing body is used for contact pressure movable with at least two degrees of freedom and thereby supported on a stationary element between the Pressure generating device and the work roll arranged is. This means work positioning and run stabilization for a wide range of applications and settings realized.

Especially in combination with the horizontal arrangement of The press body can expediently on the work roll and counter roll close to the top of the work roll by the distance A = d + D / 2 with d = work roll diameter and D = counter roll diameter is determined by the axis of the counter roller. It is particularly advantageous, however, that the compact, in Considered the direction of rotation of the work roll, before the mentioned Work roll crown, but is close to it. there corresponds to the distance measured in a straight line between the press body system and the counter-roll system almost the work roll diameter. Especially in combination with these It is of particular advantage if the arrangements Support body surface of the support element and the imaginary tangential Area defined by the tangent tangent to the two rollers is determined at an angle α ≤ 90 ° are aligned.

Fig. 1

im Profilquerschnitt eine erfindungsgemäße Vorrichtung in Arbeitsposition,

Fig. 2

im Profilquerschnitt eine weitere erfindungsgemäße Vorrichtung in Arbeitsposition und

Fig. 3

nach Art eines Diagramms eine erfindungsgemäße Vorrichtung in Verbindung mit einer Pendelwalzensteuerung.

Subclaims are directed to the mentioned and further expedient and advantageous embodiments of the invention, and particularly expedient and advantageous embodiments or possibilities of the invention are described in more detail with reference to the following description of the exemplary embodiments shown in the schematic drawing. Show it

Fig. 1

in profile cross section a device according to the invention in the working position,

Fig. 2

in profile cross section a further device according to the invention in the working position and

Fig. 3

a device according to the invention in connection with a pendulum roller control in the manner of a diagram.

Devices 1 according to the invention (dyeing machines) according to FIG. 1 through 3 include one that is continuous over the length of the device machine-stationary support beam 13, one arranged thereon Pressure device 2, also arranged thereon plate-like support element 3, one in the device length itself extending counter-roller arranged stationary on the machine 6 and a work roll displaceable against the latter 5 with in relation to the counter roll diameter D small diameter d. The support element 3 engages under the Work roll 5, this on a flat slide support surface 30 of the support element 3 rests.

The pressure device 2 has a plate-shaped, on the Device length continuous press body 4, with a level coming to rest against the work roll 5 Sliding pressure surface 40 is equipped. By means of the pressure device 2 is the work roll 5 along a web 8 passing pressure zone 7 against the counter roller 6 for squeezing the web 8 can be pressed. Preferably the surface is the work roll 5 rubberized. The roller core of the roller 6 consists preferably made of stainless steel. The surface can e.g. be chrome-plated, or it is with an elastic jacket made of plastic, rubber or the like fitted.

The work roll 5 is transverse to the length of the device in all directions relocatable and frontally via a universal joint 91, which does not impair the transverse mobility, with a connected by a drive motor roller drive 9. In contrast, the stationary counter roller 6 is not self-propelled rotatable about its axis 60 on a not shown Device rack stored. In the pressed position only drives the work and drive roller 5 Material web 8 through the pinch joint formed in the pressure zone 7. Here, the counter roll 6 by means of the work roll 5 co-rotating.

1 and also in the diagram representation 3 are the axis 50 of the work roll 5 and the axis 60 of the counter roller 6 in a common horizontal level 100. The also extends Support surface 30 of the support element 3 parallel to the horizontal Level 100. The flat contact surface 40 of the compact 4 is directed perpendicular to the support surface 30. Consequently is the work roll 5 in an L-shaped profile Inclusion for pressing against the rear wall 130 of the support beam 13 movable pressure surface 40. This is at the apex 51 of the work roll 5, which is by the Distance A = d + D / 2 from the axis 60 of the counter roller 6 determined where d is the outer diameter of the work roll 5 and D is the outer diameter of the counter roll 6.

For example, the diameter d of the work roll is about half as large as the diameter D of the counter roll 6. It can be seen that such a dimensioning in connection with the support arrangement support surface of the roller arrangement described 30 transverse to that in the area of the inlet of the web 8 extending circumferential surface 61 of the counter roller 6 extends. The support body surface 30 and the imaginary tangential surface 71 through which the two rollers 5, 6 common tangent is determined at an angle α = 90 ° aligned. So the work roll 5 comes in pressure-free position with its own weight against the support surface 30 to lie.

In the embodiment shown in FIG. 2, the recording and operating space for the work roll 5 by an L-shaped one Arrangement of the sliding surfaces 40, 30 of the compact 4 and of the support element 3 determined. In contrast to the device in Fig. 1 there is the L arrangement with a tilt angle β in a tilted position with respect to the horizontal plane 100, in which the roller axis 60 lies. The imagined main action level 200 of the pressing device 2, in which the axis 50 of the Work roll 51 lies and which is parallel to the support surface 30 extends with the relatively small angle β, for example in the order of 5 ° to 7 °, compared to the horizontal plane 100 tilted down. In the regular contact position the contact surface 40 is directed perpendicular to the support surface 30. The associated regular pressure line 400, which is in Device length then lies in the plane 200.

As can be seen from Fig. 2, there are also in the arrangement in a tilted position with an inclined plane 200, the effective contact lines 400, 700 along the work roll 50 almost in Diameter distance d. The pressure line 400 lies in Direction of rotation r of the work roll 5 considered, before and in the Proximity to the work roll crown 51, the location of which Distance A = d + D / 2 from the axis 60 is determined. by virtue of the arrangement described is the angle α corresponding to that Circumferential angle τ between the apex 51 and the regular Contact line 400 smaller than 90 °.

As shown in Fig. 2, it is particularly advantageous that the tiltable against the hose members 21 and the work roll 5 arranged pressing body 4 as freely adjustable from above and removable plate can be provided, which too this purpose advantageously dashed with one or more illustrated handles 41 can be equipped.

As can be seen from FIGS. 1 and 2, the work roll 5 can convenient way through the open space between the pressing device 2 and counter roller 6 for insertion and removal be handled. The pressing device 2 only to be depressurized without a shift or movement of the support beam 13 is required because the opening area between the pressure body 4 and the counter roller 6 corresponds to the inside diameter d of the work roll 5. Conventional load-bearing beams are no longer required.

The pressing device 2 expediently comprises a pressure generating device 20 along the length of the device over the Working width distributed pressure hose elements 21. These form pressure zones, which are arranged in a row cover the entire working width. Every hose element is included a print medium, e.g. Compressed air supply, in the Drawing connected source not shown. With the chosen one The hose elements 21 are pressurized the desired pressure across the working width.

The hose elements 21, as can be seen from FIGS. 1 and 2, between the stationary rear wall 130 of the support beam 13 and the rear surface of the compact 4. According to Fig. 1, the wall 130 is the bottom of a U-shaped profile Guide receptacle for the compact 4. This is as a result only translationally along that of the support body surface 30 corresponding guide surface 301 displaceable.

As shown in Fig. 2, however, it is particularly advantageous the pressing body 4 for pressing with at least two Degrees of freedom movable between the pressure hose elements 21 and the work roll 5 to be arranged. Here is the compact 4 by a plate-like, over the working width continuous bar formed with the lower longitudinal edge 43 tiltable on the 13 outstanding on the support beam Support / guide surface 301 stands up. As a result of this arrangement can the pressing body 4 with its flat contact surface 40th in combination with the described hose pressure align automatically against work roll 5. Operational deviations from the regular investment position are compensated, the deviations are counteracted.

In an embodiment shown with reference to FIG. 3 is, seen in web running direction B, behind the counter roller 6 a pendulum roller control device 80 known per se intended. A facility of this kind is useful and advantageously part of the devices in FIGS. 1 and 2. It comprises a swivel-mounted roller 83 and an optional one driven deflection and slip roller 84. The web 8 is guided over the roller 84 and the roller 83 engages the web 8 in the section between the counter roller 6 and the deflecting roller 84.

In the device according to the invention, in contrast to conventional devices of a similar type, the device 80 does not control the web tension, but only the further transport of the web 8 behind the roller 84. For the particularly expedient embodiment of the device 1 according to the invention, the device 80 forms an advantageous supplementary device in combination with the Device 1. Thus, if necessary, the device 80 can be set so that the web 8 is conveyed through the pressure zone 7 and the subsequent onward movement until the web 8 is detached from the roller 6 without web tension. This is achieved in combination with the drive pressure which is brought about by the axial drive 9 acting on the displaceable work roll 5 and which in the course of the power transmission from the work roll 5 via the pressure zone 7 through the web 8 to the roll 6 or partly on the latter wraps through the adjacent web section. In this way, the exclusive introduction of the drive power from the work roll 5 to the rotary movement of the roll 6 is achieved according to the invention.

Claims (14)

1. Apparatus (1) for processing a material web (8), comprising a stationary mating roller (6) extending the length of the apparatus, a working roller (5) adapted to be displaced to press against the latter and having a small diameter (d) in relation to the mating roller diameter (D), a pressing device (2) by means of which the working roller (5) can be pressed against the mating roller (6) along a contact zone (7), which is continuous over the working width and allows the material web (8) to pass through it, wherein the pressing device (2) has a pressing body (4) with a pressing surface (40), against which the working roller (5) comes to contact on its peripheral area opposite the contact zone (7), and a supporting component (3), arranged separately from he pressing body (4), with a support body surface (30), on which the working roller (5) comes to lie, characterized in that the displaceable working roller (5) is connected to a drive (9) not affecting the transversal movability of the working roller (5) and forms a peripheral drive for the mating roller (6) mounted to revolve with it, wherein the working roller (5) in its driven and pressed-against position drives the material web (8) through the contact zone (7), the supporting component (3), viewed in the direction of rotation (r) of the working roller (5), is located in front of the contact zone (7) in the area between the latter and the pressing body (4), and the entering of the web (8) into the contact zone (7) is provided between the supporting component (3) and the mating roller (6).
2. Apparatus according to claim 1, characterized in that the supporting element (3) is provided with a support surface (30), which extends transverse to the peripheral area (61) of the mating roller (6) extending in the area of the web entrance.
3. Apparatus according to claim 1 or 2, characterized in that the supporting component (3) is provided with a flat support surface (30).
4. Apparatus according to any one of claims 1 to 3, characterized in that the pressing body (4) is provided with a flat pressing surface (40).
5. Apparatus according to any one of claims 1 to 4, characterized in that the supporting component (3) and the pressing body (4) have flat surfaces (30; 40), which are arranged at least approximately at right angles to each other.
6. Apparatus according to any one of claims 1 to 5, characterized in that the pressing body (4) lies against the apex (51) of the working roller (5), which is determined by the distance A = d + D/2 from the axle (60) of the mating roller (6), wherein d is the diameter of the working roller (5) and D the diameter of the mating roller (6).
7. Apparatus according to one of claims 1 to 5, characterized in that the pressing surface (40) of the pressing body (4) is arranged and aligned in such a way that it lies against the working roller (5), viewed in the direction of rotation (r) of the same, in front of the working roller apex (51), which is determined by the distance A = d + D/2, with d = the working roller diameter and D = the mating roller diameter, from the axle (60) of the mating roller (6), wherein the pressing body surface (40) lies against the working roller (5) in proximity to the said apex (51).
8. Apparatus according to any one of claims 1 to 7, characterized in that the support body surface (30) of the supporting component (3) and the imaginary tangential face (71), which is determined by the tangent of contact shared by the two rollers (5, 6) when in pressing contact, are aligned at an angle α ≤ 90°, wherein the distance, measured in a straight line, between the contact point of the pressing body (4), on the one hand, and the contact point of the mating roller (6), on the other, at least approximately corresponds to the diameter (d) of the working roller (5).
9. Apparatus according to any one of claims 1 to 8, characterized in that the mating roller (6), the pressing body (4) and the supporting component (3) are arranged in such a way that the working roller (5) comes to lie with at least the greatest part of its own weight on the support body surface (30).
10. Apparatus according to any one of claims 1 to 9, characterized in that the axles (50, 60) of the working roller (5) and the mating roller (6) lie in a common, at least approximately horizontal plane (10), wherein the web runs in a direction (B) from bottom to top and in the operating condition the working roller (5) rests on the support body surface (30) located below it.
11. Apparatus according to any one of claims 1 to 10, characterized in that it comprises a compensator roller control system (80) which acts upon the web (8) running off the mating roller (6), and is adapted to move the web (8) through the contact zone (7) and subsequently along the stretch of web lying against the mating roller (6) without causing tensile stress in the web (8) in the case of the peripheral drive of the mating roller (6) being effected by the driving working roll (5).
12. Apparatus according to any one of claims 1 to 11, characterized in that the pressing body (4) for exerting pressure is arranged to be movable with at least two degrees of freedom between a pressure generating device (20) and the working roller (5).
13. Apparatus according to any one of claims 1 to 12, characterized in that a pressure generating device (20) of the pressing device (2) has at least one pressure tube element (21) operating against the pressing body (4) and extending lengthwise along the working width.
14. Apparatus according to any one of claims 1 to 13, characterized i n that the pressing body (4) of the pressing device (2) is constructed and arranged as a plate, which, viewed in relation to the working direction of rotation (r) in the area of the pressed-against plate, is adapted to be installed and removed through the empty space (120) both in front of the plate contact point (400) and above the working roller (5).

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