DE3623452A1 - Film cleaning device - Google Patents

Abstract

The invention relates to a device for cleaning dirty films, having a transport device for the film, a deflecting roller for guiding the running film, and at least one wet cleaning station, which has a container with a storage chamber for liquid cleaning agent and through which the film passes and is wetted by the cleaning agent. In the known device, the film passes through the cleaning agent in the container, and complicated guide devices are required together with a subsequent drying station in order to dry the cleaning agent before winding up the film. This device is of complicated construction. The rate of passage of the film is unsatisfactorily low. According to the invention, by contrast, it is provided that at least two wick plates which consist of capillary material and delimit a cleaning gap outside the storage chamber are inserted into the storage chamber, that the storage chamber is partitioned off from the film, that the film penetrates the cleaning gap while bearing against the wick plates on both sides, and that the storage chamber is connected to a level-controlling device for the cleaning agent. Due to the wick plates and the level-controlling device, it is possible to dose the cleaning agent exeptionally precisely when applying it, and this leads in conjunction with the stripping effect of the wick plates to thorough cleaning without ... special devices for drying the film ... subsequently ... Original abstract incomplete.

Description

The invention relates to a device in the genus Concept of claim 1 specified Art.

In a device known from practice this The type of film in the container is caused by the cleaning agent carried out so that contaminations essentially only rinsed off and the film so heavily with excess Rei Cleaning agent is wetted that behind in the direction of rotation the container drying devices are arranged need to dry the detergent before the film is rewound. The device builds from this Complicated, big and expensive. The cleaning rinsing effect is unsatisfactory. The possible film speed is limited. The environment The volatile cleaning agent is high.

In a device known from DE-AS 12 67 978 Another type of film is a moving Rei cleaning band in contact with the cleaning medium applied to the film, where there is pollution loosens, which are then held in place by the cleaning tape be. Solid particles that are insoluble who stripped by the cleaning tape. This device tion is due to the movement drive for the Reini band complicated. The friction load for the em sensitive film surface is problematic. Since the Rei cleaning agent in excess by the cleaning tape brought, is a subsequent drying of the fil with unpleasant environmental nuisance.

The invention has for its object a simple and inexpensive device of the type mentioned create an effective and quick cleaning of the film is possible.  

The object is achieved with the im characterizing part of claim 1 specified Features resolved.

This training results in multiple hints interacting advantages. The wick plates are fixed and do not require any connection propellant. They create one across the entire film wide uniform, uniform and precise tunable pressure that changes as you go through the film not changed automatically and only a certain one Apply the amount of detergent. This amount is per area unit of the film exactly to the requirements tunable. From the exposed surfaces of the quiet standing wick panels does not evaporate significantly Part of the detergent. The detergent will due to the capillary action in the cleaning gap transported. The film doesn't need to go through Reini agent to be carried in the container. Thereby he there is a simple and inexpensive structure of the pre direction and the extremely important effect that due to the exact dosage of the detergent always only as much detergent without excess is brought up as it is for loosening and removing the upper surface contamination of the film is needed. This is very environmentally friendly, so that in one room the use of the device has no odor or mucosal irritation is felt. Based on the Use of detergent is the cleaning achieved optimal effect. The main advantage, however, lies in that through the precisely metered detergent order the cleaned film just behind the wet cleaning station is dry again without outside help, so that it either rewound immediately or in a dry cleaning station can be introduced.  

This extremely positive effect is also with high film given running speeds.

A particularly useful embodiment of the Erfin the subject matter of claim 2. thanks to the in the wet cleaning station extremely precisely measured do sis of detergent, the film is already a short one Running distance behind the wet cleaning station completely dry. Any external drying facilities are not required. Should in wet cleaning Station solid particles or coarse impurities have not been removed so they will be reliable in the dry cleaning station, which due to the rapid self-drying of the film immediately, i.e. without Interposition of special drying devices, be located close behind the wet cleaning station can. The sticky surfaces in the dry cleaning station remove the solid particles and dirt loosened impurities. Since the film reaches the Dry cleaning station is already dry Do not risk that detergent still present sticky surfaces in the dry cleaning station could render it inoperable.

Also important is the embodiment of claim 3, since such an adhesive tape is commercially available and inexpensive and maintains its adhesive properties for a long time. This has the Advantage that either a film of average length can go through in one go or that only two to peeled off four times a circumferential length of the roll on the adhesive tape needs to be cut and cut off so that an opti painterly cleaning effect is achieved. That of the Laufrich direction of the film provides opposite winding direction sure that the tape adheres under the adhesive force  not unwind the film surface automatically starts.

A particularly important aspect of the invention goes from claim 4. The band made of textile material poses with his on the film surface Layer sure that the detached during cleaning Impurities do not get in the cleaning gap or in collect the pores of the wick plate surfaces and one form a barrier layer which impairs cleaning, but between the pile threads, the loops or tangle fibers are retained without transferring the Detergent to affect the film surface pregnant. In the cleaning gap to which the cleaning medium increases in the direction of the film is in the wick plates near the end of the cleaning gap at contain few detergents. This has the Advantage that at the beginning of the cleaning gap more Rei cleaning agent is applied to the film surface, that starts to loosen the impurities immediately, while in the end area of the cleaning gap the Areas around the film surface are a bit drier and the detached impurities and possibly excess cleaning agent are wiped off, so that the film clean the nip and just more leaves damp and dries immediately.

The specified in claim 5 are particularly useful Materials because they have a good retention effect on the Have impurities and still the same for you permanent and gentle application of the cleaning agent to care. Such tapes are otherwise commercially available and inexpensive.  

The idea of claim 6 is also favorable because the both on both surfaces of the film Belt sections against each other thanks to the U-shaped fold support each other and not in the cleaning gap warp.

The embodiment of FIG. 7 is also advantageous because the tape lying loosely on the wick plates remains secured in position solely by the pressure in the cleaning gap, without forming folds, and can be exchanged with a handle, for example during a cleaning cycle or after a cleaning cycle.

Another expedient embodiment is from An Proverb 8 explained. The pulleys create an intermediate in which the cleaned and moist film dries perfectly. The drying effect is with increasing film speed increased so that enables a high film running speed overall is.

A particularly simple, compact and inexpensive Solution emerges from claim 9. The upright standing plate serves as a support for essentially all components required for cleaning. These are therefore in a confined space and still easily accessible arranged. The device can also be used in tight spaces Space, e.g. in a corner of the room and use. If necessary, you can use a relatively small front cover side of the plate, so that the reini film, for example in a dusty environment Take-up reel reached cleanly. Also in this Wei se an odor nuisance from that usually easy volatile cleaning agents can be avoided.  

With regard to the quick drying of the wet cleaning film leaving station is also the feature of claim 10 important. Despite the compact design the device has a relatively large film Route available in the smallest space along which he can reliably dry.

In view of the fact that the exact dosage of the Reini the basic prerequisite for effectiveness of the cleaning process is the embodiment of claim 11 favorable. With the float valve namely due to the known capillary action of Wick plates the application of cleaning agents exactly and adjust when the film speed changes len.

The embodiment of claim is also expedient 12 because the additional components of the device are arranged on the lower part of the upright standing plate. The lower part could be one Table on which the plate is arranged, which the main components of the device carries.

So that the device auto without significant control works matically, is also the feature of claim 13 important. The limit switch switches on the drives Pass through the film end automatically, with the Position of the limit switch at the drive roller adj beard pulley ensures that the cleaned th film is wound up properly until the end.

A structurally simple and functional embodiment further emerges from claim 14. The container can be made of plastic or metal. The An Pushers ensure that the shape and length  of the cleaning gap and the pressure on the film surfaces are precisely adjustable and the Reini not change. The detergent arrives even to all surface areas of the film, because it washes around the wick plates on all sides. As a result of that adjustable and then constant pressure pressure and the precisely set "lubrication" the cleaning agent will reliably be a good cleaner achieved, whereby neither new film with proportionate soft surface still old film with relatively hard Surface can be injured. The device leaves simply refer to the respective conditions settings.

The feature of claim 15 is important because the Additional storage chamber helps that the set No level of detergent in the storage chamber significant fluctuations.

The formation of the cleaning gap and the setting Availability of the pressure on the film surfaces is on structurally simple way with the features of claim 16 realized.

The ease of use of the device is also through the feature of claim 17 improved because Einfä the film to be cleaned or to replace the im Cleaning gap of the belt used or just as a control, only the holding part after loosening the lock must be folded away so that the wick open the cleaning gap and free access to the Inside.

The embodiment of claim is particularly practical 18 because the magnet on the one hand is adequate and  provides constant holding force for the locking and on the other hand the locking only by one Handle can be released.

Finally, the feature of claim 19 is also important tig, because the connecting groove ensures that the Wick plates very evenly with the detergent be supplied.

An embodiment of the Er subject of the invention explained. Show it:

Fig. 1 is a frontal view of a device for cleaning the soiled film,

Fig. 2 is a rear view of the apparatus of Fig. 1,

Fig. 3 is a vertical section through a detail of the device in the plane III-III of Fig. 4,

Fig. 4 is a plan view of the detail of Fig.3, and

Fig. 5 is a horizontal section on the plane VV of FIG. 3.

From Figs. 1 and 2, a device 1 is visible for cleaning a soiled film 2. In the Vorrich device 1 , the film 2 is unwound from an unwinding reel 3 , automatically cleaned and rewound on a reel spool 4 . The compact Vorrich device 1 has a plate-shaped lower part 5 , which can be a table top for example. On the lower part 5 , an upright plate 6 , for example a sheet metal plate or a plywood panel, is attached, the front 6 V in Fig. 1 and the rear 6 R are shown in Fig. 2. On the lower part 5 a Abwickelspu lenlager 7 for the unwinding spool 3 and this is arranged a first guide roller 8 adjacent.

The take-up reel 4 is held in a bearing 9 , which can either be attached to the plate 6 or to the lower part 5 . Irrespective of this, the lower part 5 could also have only the extension of the plate 6 . The coils 3 and 4 with their bearings 7 and 9 could then be arranged at other locations.

Near the left edge of the plate 6 ( Fig. 1) is attached to the front 6 V of the plate 6, a wet cleaning station 10 , which is arranged in an upper part of the plate 6, a dry cleaning station 11 in the direction of the film.

Below the wet cleaning station 10 , a deflection roller 12 is freely rotatably mounted, which is assigned a stop pin 13 in the lower part 5 . The film 2 is rotated by 90 ° in the running direction between the deflection rollers 8 and 12 . From the deflection roller 12 , the film 2 runs approximately vertically through the wet cleaning station 10 , then freely over a larger distance to a further deflection roller 14 arranged near the upper edge of the plate 6 . From this, the film runs approximately vertically downwards to a further deflection roller 15 arranged near the deflection roller 12 , about which it is deflected by approximately 180 ° and again runs to a further deflection roller 16 up to the upper edge of the plate 6 . At this, the film 2 is deflected downwards again by 180 ° before it runs into the dry cleaning station 11 . In this two laterally offset rollers 17 and 18 are arranged. After the lower edge of the plate, a further deflection roller 19 is then provided with an associated limit switch 20 , from which the film runs horizontally to a drive roller 21 , which is seated on a driven shaft 22 , which supplies the film through the two cleaning stations 10 and 11 draws. The drive roller 21 is followed by a further deflection roller 23 , from which the film finally runs off the device and the winding reel 4, which may be arranged there.

In the wet cleaning station 10 , a container 24 for a cleaning agent is attached to the plate 6 , in which wick plates 26 , 27 are provided, which limit a cleaning gap 25 for the film 2 . In the dry cleaning station 11 , each roll 17 , 18 has a winding 28 of an at least one-sided adhesive, commercially available adhesive tape or adhesive strip. The spirals drawn on the rollers 17 , 18 indicate that the adhesive tapes are wound against the direction of the film raised by an arrow. The film passes through the container 24 through a slot 29 in which the film 2 is sealed off from the cleaning agent in the container 24 . Finally, on top of the plate 6 , a container 30 for the cleaning agent is arranged.

The limit switch 20 sits on a shaft 51 which passes through the plate 6 and leads to the rear.

In Fig. 2 on the rear 6 V of the plate 6 on ordered components can be seen. The container 30 sits on a support bracket 31 fastened to the plate 6 . A drop line 32 leads from the container 30 to a float switch 34 which is connected via a line 35 to a connection 36 (see FIG. 4) to the interior of the container 24 . With 37 a fastening screw for the container 24 is indicated. The float switch 34 is attached to a bracket 33 , which in turn ent is attached to the rear 6 H or on the lower part 5 be.

On the lower part 5 , a drive motor 38 , for example an electric motor, is also mounted, which has a drive pulley 39 which has a drive belt 40 with a larger drive pulley 41 mounted on the shaft 22 in drive connection. The disk 41 serves to drive the drive roller 21 (see FIG. 1). On the shaft 22 also sits a smaller drive pulley 42 which is coupled via a belt 43 to a drive pulley 44 which is mounted in the bearing 9 for the winding spool 4 and serves to drive the winding spool 4 . The drive motor 38 is supplied with current via a supply line 45 , which leads to a control device 46 with a switching part 47 attached to the rear 6 H. From the control device 46 leads a line 48 to the drive motor 38 and a Lei device 49 to a switching element 50 which is connected to the shaft 51 of the limit switch 20 ( Fig. 1).

The structure of the container 24 of the wet cleaning station 10 can be seen in detail from FIGS . 3 and 4. Be the container 24 , which may be a metal or plastic molding, has a slot 29 on three sides surrounding storage chamber 52 which is connected to an additional storage chamber 54 . At the bottom of the storage chamber 52 , a connecting groove 53 is formed, which also cuts an inlet opening 63 from the connection 36 .

The wick plates 26 , 27 , which expediently send from a felt or other capillary properties and are resistant to the cleaning agent, are inserted with their lower ends into the storage chamber 52 and can be secured by securing screws 62 . The upper parts of the wick plates 26 , 27 protrude beyond the free top of the container 24 . On a side wall of the container 24 bearing blocks 55 are hen for a hinge axis 56 (expediently formed by short pins). Around the hinge axis 56 , a holding part 57 can be folded down in the clockwise direction from the position shown in FIG. 4 and clipped onto the container 24 . The holding part 57 has an upward-facing extension 58 , to which an abutment 60 is fastened by means of fastening screws 59 , which abuts in the position shown of the holding part 57 against an outside of the wick plate 26 and presses it towards the other wick plate 27 . To set the holding part 57 in the Darge presented position in the container 24, a magnet 61 is set.

The level of the cleaning agent set by the float switch 34 in the storage chamber 52 and also in the additional storage chamber 54 is indicated by 64 . The level 64 is selected so that only a predetermined Do sis of the cleaning agent can get into the cleaning gap 25 .

On the top of the container 24 , a convex curved leaf spring 66 is fastened with fastening elements 65 , which lies on the outside of the wick plate 27 and presses it towards the wick plate 26 . In the cleaning gap 25 , a (see FIG. 5) tape made of velvet or another textile material is placed in a U-shape and transversely to the running direction of the film 2 , which is secured in position by the wick plates 26 , 27 . The band 67 expediently consists of a textile carrier material 68 , from which freely ending pile threads 69 or loops or tangled fibers which abut the surfaces of the film 2 protrude.

Through the abutment 60 and the leaf spring 66 , the wick plates 26 , 27 are pressed against one another in such a way that they define the relatively narrow cleaning gap 25 over a predetermined length.

The device works as follows:

As soon as the cleaning agent has reached level 64 , it rises due to the capillary action in the wick plates 26 , 27 and reaches the carrier material 68 and the pile threads 69 up to their tips. The holding part 57 is folded down so that the wick plate 26 holds a ge distance from the wick plate 27 . The film 2 is then threaded in, the band 67 positioned and the holding part 57 pivoted into the position shown and fixed by the magnet 61 . In the cleaning gap 25 , the pile threads 69 press against the surfaces of the film 2 and wet them with the cleaning agent. Since the drive 38 is switched on by means of the switch 47 , the film begins to run. The cleaning agent on the film surfaces triggers the dirt that is continuously stripped by the pile threads 69 and who collect between the pile threads. The film 2 leaves the cleaning gap 25 moist and dries ent along the route via the deflection rollers 14 , 15 and 16 completely before it runs over the sticky surfaces of the rollers 17 , 18 in the dry cleaning station 11 . There undissolved solid particles or fibers are removed before the cleaned film is wound on the winding spool 4 . By means of the float switch 34 , the continuously consumed cleaning agent is updated so that the set level is maintained and the dose of the cleaning agent is kept constant.

Depending on the film length, the drive 38 is stopped after a certain running time at a certain running speed via the switch 47, which is optionally provided with a timer, so that a circumferential length of the adhesive tape can be cut off from the rollers 17 , 18 . The band 67 is also expediently replaced. Then the cleaning is continued until finally the film end passes the limit switch 20 , which turns off the power supply to the drive 38 . By adjusting the float switch 34 , the level 64 can be changed continuously. If necessary, the abutment 60 is adjustable ver, so that the contact pressure in the cleaning gap 25 can be adapted to the given conditions. The wet cleaning could also be carried out directly without the band 67 by means of the wick plates 26 , 27 . Film speeds of up to 5000 m / h are easily possible during cleaning. The device 1 can be covered on the front 6 V of the plate 6 by a hood. It would also be conceivable not to attach the plate 6 to the lower part 5 , but directly on a wall.

Claims (19)

1. Device for cleaning dirty films, with a transport device for the film, with Umlenkrol len for guiding the running film and with at least one wet cleaning station with a storage space for liquid detergent container through which the film passes through wetted with the cleaning agent tel characterized in that in the storage space ( 52 ) of the container ( 24 ) at least two wicking plates ( 26 , 27 ) consisting of capillary material are inserted, which delimit a cleaning gap ( 25 ) outside the storage space ( 52 ), that the storage space ( 52 ) Compared to the film ( 2 ) that the film ( 2 ) passes through the cleaning gap ( 25 ) with the wick plates ( 26 , 27 ) on both sides, and that the storage space ( 52 ) with a level regulating device ( 34 ) for the Detergent is connected. 2. Apparatus according to claim 1, characterized in that in the direction of the film ( 2 ) the container ( 24 ) of the wet cleaning station ( 10 ) is immediately downstream of a dry cleaning station ( 11 ) in which both film surfaces on rollers ( 17 , 18 ) with sticky surfaces. 3. Device according to claims 1 and 2, characterized in that the sticky surface of a spi ralig wound, at least one side coated adhesive tape ( 28 ) is formed in multiple circumferential length of the roll ( 17 , 18 ) and that the adhesive tape ( 28 ) the direction of the film ( 2 ) is wound in the opposite direction. 4. The device according to at least one of claims 1 to 3, characterized in that a belt ( 67 ) made of textile material is arranged in the cleaning gap ( 25 ) between each film surface and a flexible wick plate ( 26 , 27 ), for example made of felt or nonwoven which, at least facing the film surface, has a layer of freely ending pile threads ( 69 ) or of loops or of tangled fibers. 5. The device according to claim 4, characterized in that the band ( 67 ) consists of velvet, velor, loop material or from a random fiber fleece. 6. Device according to claims 4 and 5, characterized in that the band ( 67 ) is folded transversely to the direction of the film U-shaped around the film ( 2 ). 7. Device according to claims 4 to 6, characterized in that the band ( 67 ) on the wick plates ( 26 , 27 ) is loosely supported. 8. The device according to at least one of claims 1 to 7, characterized in that between the wet cleaning supply station ( 10 ) and the dry cleaning station ( 11 ) a plurality of guide rollers ( 14 , 15 , 16 ) for the film ( 2 ) are seen before. 9. The device according to claim 8, characterized in that the wet cleaning station ( 10 ), the dry cleaning supply station ( 11 ), the deflection rollers ( 12 , 14 , 16 , 18 , 23 ), and at least one drive roller ( 21 ) (and a take-up spool ( 4 )) are attached to the front ( 6 V ) of an upright plate ( 6 ), to which a container ( 30 ) for the detergent is attached, and that to the rear ( 6 H ) of the plate ( 6 ) the level control device ( 34 ), a Antriebssele element ( 41 ) for the drive roller ( 21 ) and Steuerein devices ( 46 ) for a drive ( 38 ) of the drive element ( 41 ) are attached. 10. Device according to claims 9 and 10, characterized in that the film ( 2 ) between the wet cleaning supply station ( 10 ) and the dry cleaning station ( 11 ) over the entire height of the plate ( 6 ) and little least three times by approximately 180 ° is redirected. 11. The device according to at least one of claims 1 to 10, characterized in that the level control device ( 34 ) holds an adjustable float valve ent. 12. The apparatus according to claim 9, characterized in that the plate ( 6 ) is fixed on a lower part ( 5 ) which carries an unwinding reel bearing ( 7 ), a deflecting roller ( 8 ) and the drive ( 38 ), which optionally with one the plate ( 6 ) or on the lower part ( 5 ) angeord Neten drive element ( 44 ) of a take-up reel ( 4 ) is in drive connection. 13. The device according to at least one of claims 1 to 12, characterized in that at least one, preferably the drive roller ( 21 ) adjacent, deflection roller ( 19 ) is assigned a limit switch ( 20 ) which is in communication with the control device ( 46 ). 14. The device according to at least one of claims 1 to 13, characterized in that the container ( 24 ) has an open at its front side facing away from the plate ( 6 V ), from bottom to top through slot ( 29 ) on three sides of Be a limit of the open-top storage space ( 52 ) is surrounded that the wick plates ( 26 , 27 ) on both slot sides th project over the container ( 24 ), and that on the container ( 24 ) supported pressing devices from the outside against the protruding wick plate parts and press these against each other in such a way that the cleaning gap ( 25 ) extends approximately in an extension of the slot ( 29 ). 15. The apparatus according to claim 14, characterized in that the container ( 24 ) on one side of the slot ( 70 ) widened and extended from the front plate ( 6 V ) away, and that in the extension an additional storage chamber ( 54 ) is formed which is connected to the storage chamber ( 52 ). 16. The device according to at least one of claims 1 to 15, characterized in that on the top of the container ( 24 ) has a, preferably convexly curved, leaf spring ( 66 ) is attached, with its convex side on the outside of a protruding wick plate part Bias is present, and that against the outside of the protruding wick plate part of the on the wick plate on the container ( 24 ) rigidly supported abutment ( 60 ). 17. The apparatus according to claim 16, characterized in that the abutment ( 60 ) on one of the outer side te of the container ( 24 ) attached holding part ( 57 ) be fastened, which is about a hinge axis ( 56 ) from the container ter ( 24 ) can be folded away and locked by a lock in the folded position on the container. 18. The apparatus according to claim 17, characterized in that the hinge axis ( 56 ) is arranged vertically, and that the locking is formed by a magnet ( 61 ) arranged either in the container ( 24 ) or in the holding part ( 57 ). 19. The device according to at least one of claims 1 to 18, characterized in that at the bottom of the SpeI cherkammer ( 52 ) through to the additional storage chamber ( 54 ) continuous, an inlet opening ( 63 ) for the cleaning agent cutting compound groove ( 53 ) is provided .