EP0756649A1

EP0756649A1 - Treatment device for textile webs

Info

Publication number: EP0756649A1
Application number: EP95913852A
Authority: EP
Inventors: Wolfgang Kurschatke
Original assignee: Eduard Kuesters Maschinenfabrik GmbH and Co KG
Current assignee: Eduard Kuesters Maschinenfabrik GmbH and Co KG
Priority date: 1994-04-21
Filing date: 1995-03-21
Publication date: 1997-02-05
Anticipated expiration: 2015-03-21
Also published as: JPH09505642A; EP0756649B1; WO1995029280A1; US5768919A; DE4413871C1; DE59501107D1; JP2749450B2; CZ284701B6; CZ294596A3

Abstract

A treatment device (100) for a textile web (1) comprises a drum (20), rotatable in a container (2) with a treatment liquid (4), around which the web (1) is wrapped. The ends of the drum (20) are supported on bearing plates (10) arranged near the fronts of the container (2). The bearing plates (10) are supported at the upper end on an eccentric (6), opposite the lower end of which there is a torque support (9). As the eccentric rotates, the bearing plates (10) with the drum (20) and the web (1) wrapped around it are caused to oscillate in the treatment liquid (4).

Description

Treatment device for textile webs.

The invention relates to a treatment device of the type corresponding to the preamble of claim 1.

Such a treatment device is known from DE-PS 690 530. In the known embodiment, a plate is resiliently arranged above the level of the treatment liquid, on which a vibrator with circumferential eccentric is arranged and from which bearing plates extend downward, on which the drum is mounted in the treatment liquid.

This embodiment cannot be used in practice because the vibrations generated by the vibrator on the spring-loaded plate are not well defined and it cannot be prevented that the drum oscillates back and forth in the container in an undesirable manner.

From DE-OS 21 39 651 an embodiment is known in which the drum with its shaft is mounted on an eccentric and therefore oscillates positively and in a defined manner. However, the eccentric shaft is mounted on a bearing arrangement outside the end faces of the container and requires a passage through this end face. Extensive experience with this device has shown that the permanent effective sealing of this passage is difficult.

The invention has for its object to develop a generic device so that no sealing problems occur and a defined vibration of the drum is guaranteed.

This object is achieved by the invention reproduced in claim 1.

The eccentric bearing therefore no longer acts on the shaft of the drum, but on the bearing plate above the liquid level. It is therefore no longer necessary to seal the eccentric shaft because it is not in the liquid. The torque arm helps against uncontrolled vibrations of the drum and the end shields, so that the end shields are guided desmodro isch.

Precise guidance of the end shields is particularly important from the point of view that the endeavor today is to get by with as little liquor content as possible for treatment devices for textile webs. The container therefore nestles as close as possible to the drum or the spatial area circumscribed by it during its oscillating movement.

A further development under this aspect is the subject of claim 2. The displacer accommodated with the features of this claim also allows the inside of the drum to be kept largely free of liquid and the corresponding volume to be saved.

In order to be able to make the displacement body as large as possible, it is expedient according to claim 3 to have the support rollers engage on the outer circumference of the drum.

In one possible embodiment according to claim 4, at least three support rollers are provided on the end shields on bearing journals firmly connected to them, which therefore e.g. form a three-point bearing for the drum.

The forces that occur when the drum vibrates perpendicular to its axis are not insignificant and Say the support rollers considerably if there are only a few, for example three.

It can therefore also be considered to arrange the support rollers on a roller chain rolling on an outer circular support surface. This makes it possible to use a large number of support rollers and to distribute the forces over a large number of transfer points.

Such a roller chain can have the support rollers between double-sided link chains. A preferred embodiment is, however, given in claim 6. Here, the outer rollers serve only to support the support surface, the inner rollers only serve to support the drum.

In principle, it is sufficient if the drum is freely rotatable and is carried along by the web moving forward. In special cases it can be useful to drive the drum.

In the presence of a roller chain provided with a support roller, this can be achieved in a simple manner in the arrangement shown in Claim 7, in which the roller chain takes on both the support function and the drive function.

In detail, such a drive can be implemented in the manner set out in claims 8 and 9.

Instead of on support rollers, the drum can also be mounted on ring bearings provided at each end on the end shields (claim 10). Rolling bearings are meant whose radial extension is small in relation to their diameter (so-called thin ring bearings).

Both end shields are mounted on an eccentric. In order to simplify the drive of these two eccentrics and also to ensure the synchronous activity of the eccentrics without great effort, the configuration according to claim 11 is recommended.

The torque arm can be Say 12 reproduced way to be realized constructively.

The abutment forms a fixed point to a certain extent, which prevents the rotation of the bearing plate around the eccentric, but still permits the displacement of the bearing plate caused by the eccentric movement.

The feature of claim 13 results in the greatest distance of the torque arm from the eccentric and thus the lowest forces on the torque arm.

This can be implemented in the manner set out in claim 14.

An alternative embodiment is the subject of claim 15.

The drum should support the web as completely as possible, but should not hinder the flow through the web. In an embodiment that comes into consideration for this purpose, it can be designed according to claim 16.

In order to move the support points closer together, it may also be advisable to design the circumference of the drum as a sieve (claim 17).

Exemplary embodiments of the invention are shown in the drawing.

Fig. 1 shows schematically the principle of the invention seen in a first embodiment as a vertical section perpendicular to the drum axis against a bearing plate;

Figures 2 and 3 show corresponding views of other embodiments;

4 and 5 show possible embodiments of roller chains suitable for supporting the drum;

6 shows a side view of a concrete embodiment of the treatment device;

FIG. 7 shows a partial view according to FIG. 6 from above;

8 shows a front view of the treatment device;

FIG. 9 shows the area framed by dash-dotted lines in FIG. 8 on an enlarged scale, cut in the vertical central plane.

The treatment device 100 indicated in FIG. 1 is used for wet treatment of a textile fabric web 1 in a treatment liquid 4 located in a container 2 up to a level 3. The container 2 is held in a machine stand (not shown) in which a rotating driven eccentric shaft 5 is also stored above level 3 of the treatment liquid is. On the eccentric shaft 5, eccentrics 6 are arranged at both ends of the container 2, on each of which a bearing plate 10 is mounted, which is sealed within the end face of the container 2 parallel to the plane of the drawing in FIG. 1, that is to say in the treatment liquid 4 is arranged. The bearing plate 10 has the outline shown in FIG. 1 and is suspended in the embodiment of FIG. 1. When the eccentric shaft 5 rotates, the eccentric 6 causes the bearing plate 10 to oscillate back and forth. So that the bearing plate 10 does not oscillate in an uncontrolled manner, an abutment 7 in the form of a roller 7 'or a corresponding sliding block on the bearing is at the lower end thereof shield 10 are mounted, which are guided between two mutually parallel guide surfaces 8 fastened in the interior of the container 2 on its end faces. The abutment 7 and the guide surfaces 8 together form a torque support 9, which leads to the fact that the bearing plate 10 is completely positively guided during the movement of the eccentric 6.

Two end shields 10 are arranged opposite one another in close proximity on the inside of the two end faces of the container 2.

Provided on the sides of the end shields 10 facing one another are three support rollers 11, 12, 13 which are rotatably mounted on the end shield 10 with the corners of an isosceles triangle and which roll on the outer circumference of a cylindrical drum designated 20 as a whole and guide it in a rotatably defined manner. At the ends, the drum has rings 21, on which the support rollers 11, 12, 13 rest and roll from the outside and which are connected to one another by axially parallel rods 22 which are arranged close together in the circumferential direction on a pitch circle and which form the drum circumference and consist of pipes. The drum 20 is thus mounted on the support rollers 11, 12, 13 on the end plate 10 in the middle.

The bearing plate 10 has a circular opening 14, through which a tubular closed displacement body 15 extends, which is tightly connected at its end faces to the end faces of the container 2. There is no treatment liquid 4 in the interior of the displacer body 15. Rather, there remains only the cross section of the container 2 located outside, the outer circumference of which is designed such that the wall of the container perpendicular to the plane of the drawing in FIG. 1 faces the bearing shield 10 nestles as close as possible without the bearing plate 10 abutting in its movement caused by the eccentric 6. From this point of view, the diameter of the opening 14 is chosen to be a certain amount larger than the outer diameter of the displacer body 15, which is otherwise as large as possible, so that it just barely bumps into the eccentric drum 20 fits. Above the drum 20, deflecting rollers 16, 17, which are parallel to the drum axis, are fixedly mounted on the end faces 2 'of the container 2, over which the web 1 is guided in the manner shown in FIG. 1, so that it wraps around the drum 20 almost entirely . When the eccentric 6 rotates, the drum 20 performs a defined displacement perpendicular to its axis, which is communicated to the web 1 wrapped around the drum 20 and ensures a strong relative movement between the web 1 and the treatment liquid 4.

The deflection rollers 16, 17 do not follow the eccentric movement of the drum 20. The material web 1 is thus moved with the drum 20, held on the deflection rollers 16, 17. In between, the web runs a short distance. This results in a forced movement of the web 1 through the treatment liquid 4 in the transition areas and an increase in the washing effect. Trials have shown that good to extraordinary results are obtained in shrinking processes. Insofar as elements corresponding to the elements of FIG. 1 are present in the other figures, the same reference numbers are used.

While in the treatment device 100 the arrangement to a vertical center line M of the end shields 10 above the drum 20 and the torque support 9 are arranged vertically below, in the treatment device 200 of FIG. 2 there is no longer a symmetrical design and the eccentrics 6 and the torque arm 9 opposite each other at approximately the same height on both sides of the vertical center line M above the drum 20.

With regard to the movement of the end shields 10 'caused by the eccentric 6 and the drum 20 mounted thereon, there is no great difference. The drum 20 'differs from the drum 20 in that a cylindrical screen fabric 23 is arranged on the rods 22, which supports the web 1 more effectively.

In the treatment device 300 of FIG. 3, the arrangement of the eccentric 6, the drum 20 ″ and the torque support 9 is the same as in the treatment device 100 of FIG.

1 hit. One difference, however, is that the circumference of the drum is surrounded at most of its circumference at a constant radial distance by a circular support surface 24 which is formed by a correspondingly shaped guide rail and which is fastened to the bearing plate 10 ″ and at the top one Interruption 26 has. The drum 20 ″ is mounted on the end shield 10 ″ via a roller chain 25, which replaces the individual support rollers 11, 12, 13 of the preceding embodiments and whose rollers 30 are on the one hand on the circular support surface 24 and on the other on the outer circumference of the drum 20 ′. 'unroll.

The circular support surface 24 has the upper interruption 26 in an angular range of approximately 30 ° to 60 °, in the exemplary embodiment 40 °, through which the roller chain

25 are guided out of the circular guide and outside of the circular guide surface 24 on the - 8th -

Bearing plate 10 '' driven chain sprocket 27 can loop around. In this way, the drum 20 ″ can not only be supported by the chain 25, but also driven, while the drums 20 and 20 ′ of FIGS. 1 and 2 can be freely rotated and are carried along by the web 1.

FIG. 4 shows a first embodiment of a roller chain 25, which consists of a conventional duplex link chain 28, which carries rollers 30 on both sides on elongated pins 29, the diameter of which is greater than the height of the links Link chain 28 is and which will generally consist of plastic. The rear rollers 30 in FIG. 4 roll on the circular guide surface 24, the front rollers 30 on the circumference of the drum 20 ″.

5 shows an alternative roller chain 25 ', in which a duplex link chain 28 is again present, but in which the rollers 30 are arranged between the two link strands. The end of the drum 20 ″ must extend axially as far as the area of the circular guide surface 24.

A treatment device 100 corresponding to FIG. 1 is shown in more detail in FIGS. 6 to 9. The treatment device 100 comprises a machine frame screwed together from profiled beams, which comprises at each end an essentially flat frame 41 with two upright supports 42 which are juxtaposed with a transverse spacing and which are connected at the top by a cross member 43 and at the bottom by a cross member 44. The frames 41 present at the front ends of the treatment device 100 are in turn connected to one another by intermediate carriers 45 to form a spatial structure. The drum axis runs perpendicular to the planes of the frame 41.

The container 2 is supported on the intermediate carriers 45 and has an inlet 31 for treatment liquid and two outlets 32 provided in the vicinity of the end faces, all of which are in the lowest region of the container 2 mouth. The container 2 has the trough cross section shown in FIG. 6 and has bends 2 ″ at the upper edges which run parallel to the drum axis and which overlap the intermediate carriers 45. The left-hand angled portion 2 ″ in FIG. 6 lies somewhat lower than the right-hand one and merges externally into an overflow channel 46 with an outlet 47, which causes the level 3 of the treatment liquid 4 to be maintained automatically.

In the exemplary embodiment, the torque support 9 is formed by a sliding block 18 which is rotatably mounted on the bearing plate 10 and is guided between vertical sliding rails 19 fixed to the housing. The end faces 2 'of the container are essentially flat. Within the container, the bearing plates 10 are arranged closely in front of the end faces 2 'and are supported at their upper end on the eccentric 6, which in turn is fastened in the upper cross member 43. 33 designated the connecting shaft of the two eccentrics 6. 36 and 37 are the bearings for the deflection rollers 16, 17 attached to the end shield above the liquid level.

9 shows the eccentric arrangement in detail. In place of the continuous eccentric shaft 5 in the schematic representation of FIG. 1, short shaft journals aligned with one another have been taken. Fig. 9 shows the drive side. The shaft journal 60 rotates about the axis A and is mounted in a bearing housing 52 on the upper cross member 43 on a roller bearing 53. It passes through the cover 63 of the bearing housing 52 on one side and has a drive pin 64 there on the outside. The rotation of the shaft journal 60 is transmitted via the connecting shaft 33 to the shaft journal mounted on the opposite side, which does not require a drive journal 64 and in which the cover 63 'of the bearing housing 52 is closed accordingly.

On the inside of the container ^ 2 facing the shaft journal 60 has a ..Λzenterzapfen 65 with an axis B, which is parallel to the axis A, but around the Amount of eccentricity E is laterally offset. A bearing 54 is arranged on the eccentric pin 65 and is arranged in a housing composed of two shell-shaped housing halves 55, 56 which are placed against one another with the open sides. A bearing plate 10 in the form of a flat sheet metal plate, for example 4 mm thick, is clamped between the housing halves 55, 56 by means of screws 66. The outline of the end shield 10 can be seen in FIG. 6.

A connecting pin 67 is provided coaxially with the eccentric pin 65 and on the inside thereof, on which the connecting shaft 33 engages.

When the shaft journal 60 rotates, the eccentric journal 65 executes a circular movement with a radius determined by the eccentricity E, which is communicated to the upper region of the bearing plate 10.

Under the connecting shaft 33, the deflection roller 17 is fixedly mounted on a shaft journal 57 by means of a screw 58 in the end face 2 'of the container 2. The shaft 57 extends through the end shield 10 in a cutout 61, which leaves a space around the circumference of the shaft 57 so that the eccentric movement of the end shield 10 is possible.

On the inside of the bearing plate 10 there is a bearing plate 59 with a journal 69 on which the support roller 13 is rotatably mounted. The support roller 13 lies behind the plane of the drawing and rolls on the circumference of the ring 21 of the drum 20, which consists of axially parallel rods 22 formed by tubes.

The support rollers 13 and the drum 20 thus make the eccentric movement of the bearing plate 10, while the deflection roller 17 is fixed.

The ring 20 surrounds the closed cylindrical displacement body 15 at a distance, which is intended to reduce the liquid content of the container 2. The displacer body 15 is formed by a sheet metal cylinder which is open at the ends and is butted against the inside of the end face 2 'of the container 2. Along the inner circumference of the displacer pers 15 extends a sealing cord, which is axially and radially deposited from the inside by a ring 48 which has on its outer circumference an incline of approximately 45 °, on which the sealing ring 50 rests. When the screws 49 are tightened, the ring 48 is pulled axially against the end face 2 ', the sealing ring 50 being pressed axially against the end face 2' and radially against the inner circumference of the displacer body 15 and sealing it all around.

The arrangement according to FIG. 9 is designed accordingly on the other end of the container 2.

Claims

Patent claims

1. Treatment device for a continuously running textile fabric web (1), with a machine stand (41, 45, 41), with a container (2) connected to the machine stand (41, 45, 41) for receiving a treatment liquid

⁽⁴⁾ 'with a drum (20, 20', 20 '') rotatable in the treatment liquid (4) in the container (2) with a cylindrical outer circumference, with at the ends of the drum (20, 20 ', 20 '') arranged, vertical bearing plates (10, 10 ', 10'') perpendicular to the drum axis, on which the drum (20, 20', 20 '') is rotatably mounted about its axis and which in turn is mounted on the Machine stands (41, 45, 41) are supported, and each with a vibration generator acting on the end shields (10, 10 ', 10''), by means of which the end shields (10, 10', 10 '') and thus the Drum (20, 20 ', 20'') can be set in vibrations perpendicular to the drum axis, characterized in that each of the bearing plates (10, 10 ', 10'') arranged within the container (2) is mounted on a driven eccentric (6) above the treatment liquid (4) on the machine frame (41, 45, 41) and is supported against vibrations around the eccentric (6) by a torque arm (9) arranged outside the eccentric (6).

2. Treatment device according to claim ι _f characterized in that the drum (20, 20 ', 20'') is supported at both ends by on the end shields (10, 10', 10 ''), on the circumference of the drum (20, 20 ', 20'') radially engaging support rollers is rotatably mounted that the end shields (10, 10', 10 '') have openings (14) corresponding almost to the inner cross section of the drum (20, 20 ', 20'') and that A displacement body (15) is provided which penetrates the openings (14) and is tightly connected to the end faces (2 ') of the container (2).

3. Treatment device according to claim 2, characterized in that the support rollers (11, 12, 13; 30) engage on the outer circumference of the drum (20, 20 ', 20' ').

4. Treatment device according to claim 3, characterized in that at each end of the drum (20, 20 ') at least three support rollers (11, 12, 13) distributed over the circumference of the drum (20, 20') on the end shields (10,10 ') fixed axes are stored.

5. Treatment device according to claim 3, characterized in that the support rollers (30) on an outer circular support surface (24) rolling roller chain (25, 25 ') are arranged.

6. Treatment device according to claim 5, characterized in that the roller chain (25) on both sides of a link chain (28) comprises arranged rollers (30), of which the outer on the support surface (24), the inner on the outer circumference of the drum (20th '') unroll.

7. Treatment device according to claim 5 or 6, characterized in that the roller chain (25) by engaging a drive pinion (27) in its longitudinal direction is drivable.

8. Treatment device according to claim 7, characterized in that the circular support surface (24) is interrupted at one point (26) and the roller chain (25) is led out of the circular path by wrapping one of the pinions (27) arranged outside the support surface (24) .

9. Treatment device according to claim 7 or 8, characterized in that the pinion (27) and its drive are arranged above the treatment liquid (4).

10. Treatment device according to claim 1, characterized in that the drum (20) is mounted on the end shields on a diameter corresponding substantially to the drum diameter, designed as a roller bearing.

11. Treatment device according to one of claims 1 to 10, characterized in that the eccentric (6) of both end shields (10, 10; 10 ', 10'; 10 '', 10 '') connected by a connec tion shaft (33) and are driven by a drive arranged on one side.

12. Treatment device according to one of claims 1 to 11, characterized in that the torque arm (9) by a degree guide (8,8) and a cooperating abutment (7) is formed, one of which. Element on the end face (2 ') of the container (2) and the other element on the respective bearing plate (10,10', 10 '') are attached and the stroke corresponding to the eccentric stroke in the direction of the degree guide (8,8) and allow the bearing plate (10, 10 ', 10' ') to pivot about the abutment (7) as a result of the eccentric stroke.

13. Treatment device according to claim 12, characterized in that the torque arm (9) and the Exzen¬ ter (6) on the bearing plate (10,10 '') opposite each other with respect to the drum (20,20 '').

14. Treatment device according to claim 13, characterized in that the torque arm (9) in the lower region of the bearing plate (10, 10 '') and the eccentric (6) in Attack the upper area of the end shield (10.10 '').

15. Treatment device according to claim 12, characterized in that the torque arm (9) and the Exzen¬ ter (6) are both arranged above the drum (20 ').

16. Treatment device according to one of claims 1 to 15, characterized in that the drum (20, 20 ') is formed by axially parallel rods (22) arranged close together on a circle of end rings (21), but arranged in the circumferential direction with intervals is.

17. Treatment device according to one of claims 1 to 16, characterized in that the drum (20 ') has a sieve (23) on the circumference.