DE7831033U1 - DRYING CABINET FOR AUTOMATIC FILM DEVELOPING MACHINES - Google Patents

Description

DESCRIPTION

Drying cabinet for automatic film development machinery

The invention relates to one for automatic film developing machines certain drying cabinet, which has a box-like lockable housing, in which upper and lower pulleys for guiding the web-shaped film material in several approximately Sections running perpendicular and parallel to one another are supported by the housing and in which furthermore devices for supplying dry air between two adjacent vertical sections are provided.

Ovens are used after the wet end automatic film processors to the web-like film after leaving the last bath to dry as quickly and thoroughly so that no liquid residues _f more on the film are when it is rolled up behind the drying cabinet. On the one hand, it is desirable to be able to expose the film material to the dry air for as long as possible, while on the other hand the drying cabinet should take up as little space and in particular floor space as possible so that it requires as little floor space as possible. These two requirements lead to the fact that as many parallel sections of the as possible on the smallest possible area

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Film material web are to be accommodated and, accordingly, the individual sections as close to one another as possible should lie.

However, since the film material is flexible and can easily be deflected by the dry air blown onto it and can even flutter in the process, there is a risk that parts of the film material of adjacent sections will come into contact with one another. This is particularly undesirable in the front area of the truck locker _s because the film material is still wet here and touching the material from adjacent parallel sections can cause these parts to stick to one another, which can lead to disruptions in the flow and even to cracks in the film material as it passes through. Similar problems also arise when largely dry pieces of film material from parallel web sections touch each other _f because the dry film material is electrostatically charged and the electrostatic charges cannot be completely eliminated with discharge «- rods cannot be completely eliminated everywhere» liquid drops are applied to already dried portions _f which adversely affects the drying capacity of the drying cabinet. Should a tear occur in the film material running through it, the film material is practically completely tension-free in all sections and their rows of loops, so that mutual contact is also to be feared.

The invention is based on the object of proposing a drying cabinet for automatic film developing machines, which has a large capacity for tape-shaped film material with the smallest possible footprint has, without the continuous film material of adjacent sections in normal operation or in the event of a Film tears can come into contact with each other,

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According to the invention, this object is achieved in a drying cabinet of the type mentioned in that between adjacent vertical sections of the film material web, separating walls are provided which can be optionally brought into the operating position and extend at least in the lower region of the sections above headers for the supply of dry air. These partitions prevent film material from adjacent parallel sections from coming into contact with one another if, during operation, this material runs at relatively high speed through the drying cabinet and over the deflection rollers stored in the same and drying air is blown onto the pile material, while the partition walls, on the other hand, prevent the interior of the drying cabinet from being accessible do not affect if material has to be drawn in by hand _f if a crack in the material has to be repaired or if the drying cabinet is to be cleaned, because in these cases the individual partition walls can be brought from their operating position to a rest position, and each partition is expediently in itself, so that, if necessary, only individual partitions can be brought into the rest position or into the operating position.

According to a preferred practical embodiment of the invention, each partition is one on a retractor mechanism attached flexible sheet whose releasably attach the outer end to a bracket is. Each partition wall is therefore like a kind of spring roller blind formed, wherein the roll-up mechanism is expediently close to the bottom of the drying closet and the holder is in its upper area, so that the individual partitions move from below be pulled up when they are brought into the

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Brings position while they automatically retract downwards and are rolled up when they have been removed from the bracket »

According to a further preferred feature & r invention Each holder is a "support arm" projecting between parallel sections of the film material web and having a hook-like one Holder for attaching an eyelet located on a partition wall, this support arm being useful in its operating position can be folded down to the front on the rear wall of the cabinet housing, so that also the support arms for the individual partition walls from the operating position to an outside of the area the continuous web of film material. . Rest position can be pivoted and thus ■ · likewise do not impair the free accessibility of the interior of the cabinet housing for all kinds of work.

According to yet another preferred feature of the invention, each head piece is for the supply of the Dry air a closed box with in height, the lower pulley lying side outlet openings for the drying air, the one at the upper end has a cover for the roll-up mechanism of a partition. Because the outlet openings for the dry air supplied under pressure are in the area of the lower deflection rollers, the dry air hits on the pilmmaterial at a point on which the same is supported, so that the dry air the film material running through is not or not noticeably can deflect. Due to the partition walls, which, for example, only occur between every second

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Are arranged right section, the drying air sweeps substantially parallel over the Surface of the film web sections in the housing above, where it can be collected and discharged. As the dry air flows in more or less perpendicular and separate streams stroking over the film material results in a particularly good drying effect, because stronger with it Moisture-laden dry air cannot mix with dry air from already in the area of the film material mix dry areas and thereby the Negatively affect the drying effect in the rear part of the drying cabinet.

In the drawing, an embodiment of a dry farank according to the invention is shown schematically, namely shows

Fig. 1 is a side view of the drying cabinet, the front wall of the cupboard has been left out for the sake of clarity, and

Fig. 2 is a view of a hanging on the pivoted support arm _t in the operating position.

The drying cabinet 1 contains in the upper area a plurality of parallel axes 2 and each vertically below one of these axes 2 in the lower area an axis 3, with rollers 4 being mounted on the axes 2 and 3, over which web-shaped film material from the inlet end 5 to the outlet end 6 7 is running. There are several next to each other on each axis 2 and 3

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Rollers 4 arranged so that the filling material 7 runs in several tracks side by side through vertical sections 8, each of the sections 8 formed by an upper axis 2 and a lower axis 3 and the rollers 4 mounted thereon is c

Between each two adjacent axes 3 and thus between two parallel sections 8 is on the Bottom 9 of the box-like closed housing 10 of the drying cabinet 1 is each a closed one Box formed head piece 11 attached, wherein the head pieces 11 are used to supply dry air and are connected via a common duct 12 to a dry air source (not shown). In the side walls of the head pieces 11 there are lattice-like outlet openings at the level of the axes 3 13, through which the dry air in the area of the Axes 3 located rollers 4 on both sides, is blown out so that the drying air over the Rolls 4 running on the axles 3 of the rollers 4 running webs of the film material 7 hits the upper end 14 of each Head piece 11 is used as a housing 14 for an Aufro11 ™ Mechanism 15 of a partition 16 formed through a slot 17 on the top of the head piece can be pulled out upwards. The partition wall 16 consists of a flexible sheet 18, the lower End is attached to a roller 19, which is spring-loaded between side supports 20 rotatably mounted is. The upper end of the flexible sheet 18 is attached to a rod 21 by means of an eyelet 22 can be attached to the hook 23 of a support arm 24. If the eyelet 22 is not attached to the hook 23, thus the reeling mechanism 15 pulls the flexible sheet 18 onto the roll 19, the rod 21 not can pass through the slot 17, but

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lies down on the top of box 1 *

The arm 24 is pivotably mounted about a pin 25 on a base 26 which is on the rear wall 27 of the housing 10 is attached. The pin 25 protrudes through an elongated hole 28 in the support arm 24 through so that the support arm 24 can only be pivoted upwards to the rear wall 27, when it is raised slightly with respect to the pin 25.

The partitions 16 are also effective in preventing contact of film material from the rows of loops of adjacent parallel sections 8 in the case of a Film tear when the film material 7 located in the drying cabinet 1 has become completely free of tension.

Claims (5)

G 10 941 Gm Company Hostert Automata, Düsseldorf, V / alter Hostert pers., Unter den Eichen 108, 4000 DÜSSELDORF Protection claims: 1.) Drying cabinet for automatic film developing machines, with a box-like 'lockable' Housing, upper and lower pulleys for guiding the web-shaped film material into several sections running approximately perpendicular and parallel to one another through the housing and with devices for supplying dry air, between two adjacent verticals Sections j dad u r c h g e k e η η draws, that between adjacent vertical sections (8) of the film material web (7) can optionally be brought into the operating position e, at least in the lower section above of head pieces (11) for the supply of dry air extending partition walls (16) are provided. 2 ») drying cabinet according to claim 1, characterized in that each partition (16) one on one Rolling mechanism (15) attached, flexible web (18), the outer end (21) of which is detachable a bracket (24) is to be attached. 3.) drying cabinet according to claim 2, characterized in that that each holder has a support arm (24) which protrudes between parallel sections (8) of the film material web (7) and has a hook-like one Holder (23) for hanging an eyelet (22) located on a partition (16). - 2nd 4,) drying cabinet according to claim 3, characterized in that each support arm (24) is in its operating position Can be folded down to the front on the rear wall (27) of the cabinet housing (10). 5.) drying tank according to one of claims 1 to 4, characterized in that 'that each head piece (11) for the supply of the drying air is a closed box with lateral outlet openings (13) for the drying air at the level of the lower turning rollers (4), the ¹ at the upper end has a panel (i4) for the roll-up mechanism (15) of a partition (16). 6 «) drying cabinet according to one of claims 1 to 5, characterized in that a partition (16) and a head piece (11) for the supply of dry air are arranged between every second of the parallel track sections (8). -3-