EP1652975B2 - Spinning preparation machine - Google Patents

Description

The present invention relates to a spinning preparation machine, in particular a track or a card, according to the preamble of claim 1.

In the manufacture and processing of fiber composites, in particular during carding and drawing, certain temperatures dictated by the materials to be processed must not be exceeded in order to ensure a constant process and consistent quality. In particular, in polyester fiber material, sticky materials such as cotton with honeydew or certain chemical fiber blends stretching above 70 ° C is hardly possible. At very high delivery speeds from about 600 m / min arise in the drafting system, however, due to the increased flexing work on the drafting rollers relatively high temperatures, which often lead to process interruptions by winding. When the machines start up, on the other hand, the temperature at the rollers is often too low, which can also lead to winding. In addition, the climatic conditions in spinning mills without air conditioning are often subject to strong fluctuations, in particular, large temperature and humidity differences can be detected during the day. This also often leads to process interruptions in the drawing.

Usually, the drafting systems are provided with suction devices, which aspirate fibers from the drafting system and thereby dissipate heat with it. Nevertheless, temperatures of up to 100 ° C are reached at the rolls, especially at high delivery speeds, so that a stretching is no longer possible for all materials.

A drafting system with a suction device is in the US 4,107,911 described. The document describes an air-spinning machine in which a plurality of jobs is arranged side by side. Each workstation has a drafting system, a spinning device and a winding device. The entire drafting system of each spinning station is covered by a housing, which is connected via a suction tube with a central, machine-long vacuum channel. Fibers are extracted via the suction tube and the vacuum channel and collected at the end of the machine.

The DE 37 03 357 A1 proposes to provide the upper rollers of the drafting system with a cooling system. The top roller can be cooled by means of an air flow, which is guided through the interior of the roller core. The temperatures at the top rollers can be lowered thereby. However, it has been found that the heat can not be dissipated sufficiently to maintain a temperature suitable for drawing sticky materials.

From the DE 1 921 208 It is known for the operation of a working machine, in particular a loom, under artificially conditioned conditions to put a hood over the machine, which encloses the entire machine. For air conditioning, the hood is connected via supply and exhaust air ducts to a climate control system. To ensure accessibility to the machine, the hoods can be raised or lowered by a lifting device. By flaps in the hood, the machine can be operated without having to lift the entire hood. Such a hood enclosing the whole machine, however, is very complicated and cost-intensive. The operation of the machine is complicated by the Opening and closing the respective flaps. In order to set the temperature of a single work area, moreover, the air conditioning of a chamber enclosing the entire machine is not energetically sensible.

Object of the present invention is to provide a spinning preparation machine, which allows in a simple manner, a stretching of all materials regardless of the surrounding the machine climatic conditions even at higher delivery speeds.

The object is achieved with a spinning preparation machine with the features of the independent claim.

In the drafting system of a spinning preparation machine according to the invention, a fiber composite is stretchable. The invention relates in particular to track or cards with an associated drafting system, but it can also be used in other spinning preparation machines with a drafting system, for example combing machines. The drafting system has several pairs of rollers, which consist of top rollers and bottom rollers. According to the invention, the roller pairs are arranged in a housing, which is assigned to lower the temperature in the interior of the housing at least one Temperierquelle and which separates them from drive units of the machine. The working temperature in the drafting system or on the rollers can be adjusted by simple means to an appropriate value, without affecting the operation of the machine. The targeted temperature only a relatively small work area can be accomplished with low energy and cost. Additional heating of the drafting by surrounding heat-generating units, such as the drafting rollers driving motors, is also prevented by the housing. The housing thus also serves as a temperature shield to heat sources that are outside the housing part of the spinning preparation machine.

The housing separates the roller pairs from the room climate surrounding the machine. The housing may be made of plastic or metal. For separation, an insulating layer may be arranged on the housing walls in order to prevent cooling losses in the environment or heat absorption from the environment. Likewise, the housing walls can be provided for this purpose also with a reflective layer. The separation of the pairs of rollers and the surrounding room climate allows in an energetically particularly favorable manner to maintain an optimum operating temperature. A regulation of the temperature source is thereby also simplified.

According to an advantageous embodiment of the invention it is provided that the at least one tempering source is designed to generate a substantially constant temperature in the range of preferably 40 ° C. Temperatures in the drafting system of about 40 ° C have proven to be optimal for the drawing. Significantly higher temperatures (about 60 ° to 70 ° C) often lead to structural changes or smelting in chemical fibers, while problems with honeydew occur in cotton fibers with increasing temperature. Temperatures of 25 ° C and below, however, also cause problems due to winding. By a largely constant temperature maintenance with the help of Temperierquelle therefore the drafting system can be brought in a simple manner very quickly to an optimum for the stretching operating temperature when starting the machine. The Temperierquelle is thus used in the start-up phase of the machine for heating the housing. In this way, a uniform quality of the obtained sliver can be obtained independently of the operating conditions of the spinning preparation machine. A winding can also be largely avoided.

Another advantageous embodiment of the invention provides that the at least one tempering source is designed to generate different, adjustable temperatures. The temperature can thus be easily adapted to the operating conditions of the machine. A warming up of the drafting system to operating temperature is thereby particularly quickly possible, as well as can be adjusted depending on the material and climatic conditions each optimum operating temperature. In a particularly advantageous embodiment of the invention, the at least one tempering source can be used both as a cold source and as a heat source. For example, Peltier elements can be used as tempering source, which have a warm and a cooled side, depending on the polarity.

Likewise, however, a heat source may be provided in addition to a cold source to heat the drafting system in the start-up phase. However, embodiments which only have a cold source as tempering source are likewise possible.

Another advantageous embodiment of the invention provides that the at least one tempering source is a central air conditioning system for supplying several machines. The cooling of the drafting of several machines is thus possible as well as a warm-up in the start-up phase or after interruptions in a particularly economical manner.

A further preferred embodiment of the invention provides that the at least one tempering source is arranged decentrally in or on the spinning preparation machine. This makes it possible to achieve an individual working temperature in the drafting system in the individual machines. Energy consumption and cooling capacity can be optimally adapted to the particular machine and the respective material to be processed.

In a further advantageous development of the invention, a source of cold air is arranged on the spinning preparation machine as temperature control source. The cold air can advantageously be aimed specifically at the heat-generating components, for example, the top rollers, whereby a particularly good cooling is achieved. Since the flexing work in the elastic coverings of the drafting system top rollers leads to a particularly high heat development in these coverings, the alignment of the cold air directly onto the top rollers enables particularly efficient cooling. In addition, when the entire interior of the housing is flowed through by the cold air, in addition, a sufficient heat dissipation is achieved from the entire working area.

Advantageously, at least one supply line is provided for the supply of a cooling medium provided by the temperature control source through an opening in the housing and an opening in the housing for the removal of the cooling medium from the housing. As a result, a favorable flow for the temperature control of the drafting system can be achieved.

In another advantageous embodiment, the at least one tempering source is arranged in the housing, which allows a particularly compact and structurally simple embodiment of the invention.

In a corresponding exemplary embodiment, at least one part of the housing wall-possibly in addition to other measures for cooling the housing interior-can be cooled in order to lower the temperature in the housing.

It is also advantageous if the at least one tempering source is connected to the interior of a hollow pressure rod, wherein the cooling medium provided by the tempering source exits into the cavity and from there through at least one opening of the pressure rod. The pressure rod, which serves to guide so-called floating fibers between two drafting roller pairs, thus additionally enables targeted temperature control of the housing, in particular of the two drafting rollers, between which it is arranged. It can also be arranged a plurality of pressure rods in the housing, so that cooling medium can be selectively guided to a plurality of rollers. A suitable for the supply of cooling medium pressure rod according to the invention is at least partially hollow and has an outlet opening for the cooling medium. It can also be provided a plurality of openings for the cooling medium to evenly distribute the supplied cooling medium. Targeted heating of the rolls to operating temperature at the beginning of the process is also possible.

For targeted supply of cooling medium and one or more feeders for cooling medium in the housing and in this case preferably between two upper or lower rollers of two adjacent pairs of rollers may be arranged, which are connected as the pressure rod described above with the Temperierquelle. The cooling medium generated by the at least one tempering source exits through one or more outlet openings of the respective, preferably hollow-rod-shaped feed device. Advantageously, the cooling medium is directed over the entire or almost the entire roll width or the sliver width on the corresponding roll surface.

A particularly advantageous embodiment of the invention provides that cooling medium provided by the at least one tempering source, for example cold air, can be conducted through the housing counter to the direction of delay. Since the temperature development at the downstream rollers is higher than in the upstream rollers, the flow in the direction of the temperature gradient in the housing allows particularly efficient cooling.

Another advantageous embodiment of the invention provides that from the at least one tempering provided cooling medium, in particular cold air, in the direction of delay through the housing is conductive. Since in the main drafting field a larger fiber fly is formed than in the upstream Vorverzugsfeld, suction devices are often arranged in the stretching or delay direction of the output rollers in known machines. With a flow through the housing in the direction of delay, the extraction can be advantageously supported in this case.

The above-described advantage that the flowing through the housing cold air - in general: cooling medium -. In addition, fibers and / or dirt removed from the area of the default field, even with an extraction against the default direction can be achieved. Instead of or in addition to a suction air source, which is responsible for the suction, can be adjusted accordingly Execution of the housing geometry also find a source of compressed air use, which is preferably connected to the temperature source to transport fibers and / or dirt from the housing by means of the air provided by the Temperierquelle.

In a further development of the invention, it is proposed that the at least one tempering source is connected to an electronic control device. The cooling capacity can thereby be adjusted depending on environmental conditions and the material to be processed. At the same time, the machine can be brought to operating temperature in a particularly simple and rapid manner at the start of the process by first supplying heat or hot air.

A particularly preferred embodiment of the invention provides that the Temperierquelle is adjustable. As a result, the maintenance of a predetermined temperature level and an optimal adaptation to different operating conditions is made possible. For this purpose, at least one sensor for detecting the temperature and / or further parameters is preferably arranged in or on the housing. The working temperatures in different areas of the drafting system can thereby be detected as well as set to a specific level.

A housing for a drafting of a spinning preparation machine is designed such that pairs of rollers of the drafting system, which consist of upper and lower rollers, are enclosed by the housing. In this case, the housing separates the pairs of rollers from the room climate surrounding the machine and from other units of the machine. At least one tempering source can be assigned to the housing, so that a temperature which is no longer substantially dependent on the environment or even independent of the environment can be generated in the housing. The arrangement of the pairs of rollers in the housing, it is possible to target only the working range of the drafting system and in an economical manner.

Advantageously, at least one opening for the supply of a cooling medium provided by the temperature source and an opening for the removal of the cooling medium from the housing and a respective further opening for the inlet and the outlet of a fiber composite is provided in the housing. As a result, a circulation of the cooling medium is made possible, so that the resulting heat can be dissipated optimally.

In a particularly advantageous embodiment, the openings for supply and removal of the cooling medium are arranged such that the housing can be flowed through in the upstream direction of the drafting zone, whereby an optimal interaction with a possibly additionally connected device for removing fiber materials is possible. Such suction or Abblaseinrichtungen transport fibers and dirt usually in the upstream direction from the default field. However, a flow through the housing in the downstream direction of the default field can also be advantageous, since the cooling medium reaches the components first, which have a greater heat development.

A further advantageous embodiment provides that the housing is made at least partially transparent, to allow a visual inspection of the stretching process. Likewise, a transparent window or a transparent flap can be arranged on the housing for visual inspection.

It is also advantageous if the housing is designed at least in two parts, so that it can be easily opened for operation or maintenance purposes. For this purpose, the housing preferably has an upper part and a lower part, wherein the upper part is designed to be movable relative to the lower part. If the upper part of the housing is designed to be pivotable for opening, the handling is particularly simple. It is also advantageous if the upper part of the housing with a load, at which the upper rollers of the drafting system are arranged is connected. The opening and closing of the housing is thereby directly connected to the raising or lowering of the loading arm, so that additional steps in the machine operation and maintenance are not necessary. The structural design of such a housing is thereby also facilitated.

Another, also advantageous development provides that the upper part of the housing is connected to a cover which covers the entire drafting system. The opening of the housing takes place here directly with the lifting of the cover. Alternatively, the upper part of the housing itself is designed as a cover.

A further advantageous embodiment is characterized gekenntzëichnet that the housing has at least one further opening which cooperates with an external pressure or suction air source. This makes it possible to remove fiber material and dirt reliably from the default field and transported away.

Figur 1

eine schematische Darstellung einer erfindungsgemäßen Spinnereivorbereitungsmaschine in einer Seitenansicht,

Figur 2

eine schematische Darstellung eines Gehäuses für ein Streckwerk mit einer Kaltluftquelle als Temperierquelle,

Figur 3

eine Detaildarstellung eines Streckwerkes mit einer Temperierquelle, die mit einem Druckstab verbunden ist,

Figur 4

eine weitere Ausführungsform eines Gehäuses in schematischer Darstellung,

Figur 5

eine weitere alternative Ausführungsform eines Gehäuses in schematischer Darstellung,

Figur 6

eine schematische Darstellung eines Gehäuses in zweiteiliger, schwenkbarer Ausführung und

Figur 7

eine schematische Darstellung einer Kaltluftquelle zur Kühlung eines Gehäuses.

Further advantages beyond the invention will be described in connection with the following embodiments. Show it:

FIG. 1

a schematic representation of a spinning preparation machine according to the invention in a side view,

FIG. 2

a schematic representation of a housing for a drafting system with a cold air source as Temperierquelle,

FIG. 3

a detailed representation of a drafting system with a tempering source, which is connected to a push rod,

FIG. 4

a further embodiment of a housing in a schematic representation,

FIG. 5

a further alternative embodiment of a housing in a schematic representation,

FIG. 6

a schematic representation of a housing in two-part, swivel design and

FIG. 7

a schematic representation of a cold air source for cooling a housing.

In FIG. 1 1 is a schematic side view of a route as an example of a spinning preparation machine 1. According to this example, one or more slivers FB (only these are shown here from above for clarity) are presented side by side. At the entrance of the route, a compression device for the slivers 19 is arranged. After passing through a mechanical scanning device 2, 3, the now compressed fiber composite FB ', which consists of the plurality of individual slivers FB, guided in a drafting system 4, which forms the core of the route. The drafting system 4 generally has three drafting elements or pairs of rollers, between which the actual delay takes place. These are the input roller pair 5a, 5b, the middle pair of rollers 6a, 6b and the output or supply roller pair 7a, 7b, which rotate in this order each increased peripheral speed. As a result of these different circumferential speeds of the roller pairs, the fiber composite FB 'is warped in accordance with the ratio of the circumferential speeds. The pair of input rollers 5a, 5b and the middle roller pair 6a, 6b form the so-called pre-draft field VF, the middle roller pair 6a, 6b and the delivery roller pair 7a, 7b the so-called main drafting field HF. In the main drafting field HF a pressure rod 8 is further arranged, which deflects the fiber composite FB 'and thus for better management of Ensures fibers, in particular the not between the two pairs of rollers 6a, 6b and 7a, 7b clamped fibers (so-called floating fibers). The warped fiber composite FB 'is combined by means of a Umlenkoberwalze 9 and a belt forming device 10 and stored on a Kalanderwalzenpaar 11, 12 and a curved belt channel 13 in a can 14.

The pairs of rollers 5, 6, 7 of the drafting arrangement are arranged in a housing 15, which separates them sowöhl from the surrounding room climate as well as other units of the machine. In the present example, only the drafting rollers are disposed in the housing, but it is also possible to arrange the calendering rollers 11, 12 in the housing as well Fig. 6 shown. The fiber composite FB 'runs through an opening 22 in the housing 15 or through a further opening 23 out of the housing 15 out.

The housing 15 further has in each case an opening 16, 17 for the supply and removal of a cooling medium K, which in the present case are both connected via lines 18 to a cooling medium K producing temperature control source 20. In order to achieve a particularly uniform temperature in the housing 15, the supply and removal of the cooling medium K can also be done via two or more openings (s. Fig. 4 ). In an alternative, not shown, only the supply port 16 is connected to the Temperierquelle 20, while the opening 17 emits the heated cooling medium K directly to the room environment. In the present example, the temperature source 20 is arranged decentrally on the machine 1; However, a central temperature source 20 for the common supply of several machines 1 is also possible. By Temperierquelle 20 can be maintained in the drafting 4 a suitable for higher delivery speeds (for example, above 500 m / min for polyester or sticky cotton) suitable temperature. By means of the temperature source 20 can in certain operating conditions, for example when starting the machine 1, the drafting 4 or it surrounding air in the housing 15 are heated. For this purpose, the tempering source 20 can have an additional heat source or else a cold source, which can also be operated as a heat source. If the temperature source 20 supplies a substantially constant temperature, the interior of the housing 15 can also be heated thereby, provided that the temperature in the housing 15 is below this temperature.

A further variant of the invention provides for further use of the cooling medium K discharged from the housing 15 for cooling the drive motors of the machine 1 (not shown here). The line 18 for removing the cooling medium K is for this purpose not connected to the Temperierquelle 20, but leads via a further line 40 to be cooled to the drive units. Especially at higher ambient temperatures of about 40 ° C, as they often occur in uncontrolled spinning rooms or hot countries, can still be achieved with the discharged cooling medium good cooling of the drive units. In addition, not yet heated cold air or cooling medium K can be diverted via a further line 41 from the supply line 18 and also be used for cooling the drive units.

Due to the arrangement of the pairs of rollers 5, 6, 7 in the housing 15, only a relatively small area must be cooled, so that a suitable operating temperature can be achieved economically and with low energy consumption. Thermal effects of adjacent units and from the environment are also shielded by the housing 15. The stretching of a fiber composite FB 'any material is thus possible at any time even at high delivery speeds. Process interruptions due to fluctuating climatic conditions in the vicinity of the spinning preparation machine 1 are also largely prevented, so that such a machine has an increased production compared to other known machines. Be at the drawing dyed materials used, can be prevented by the cooling in addition a change temperature-sensitive color pigments.

The tempering source 20 includes a control device 21, so that the working temperature in the drafting system 4 can be controlled in dependence on certain parameters. The cooling capacity can be adapted for this purpose, for example, depending on the temperatures at the top rollers 5a (or 6a) and 7a, which are detected by sensors 25. In addition, the moisture in the draw zone can be adjusted to an appropriate value. However, the Temperierquelle 20 may also be provided with a control device or connected, which allows easy adaptation to different operating conditions. If the tempering source 20 is formed, for example, by an air-conditioning system, this can be used in a simple manner in order to heat the drafting device to a defined temperature level before it is operated. As a result, optimal conditions can be provided for the stretching in each operating state of the machine.

A particularly effective cooling of the roller pairs 5, 6, 7 can be achieved if the cooling medium K of the temperature control source 20 is directed directly onto the top rollers 5a, 6a, 7a of the drafting device 4, as in FIG Fig. 2 shown. For this purpose, a cold air source is arranged in the housing 15, which flows over a plurality of outflow channels, the top rollers 5a, 6a, 7a. Depending on the arrangement of the cold air source individual areas can be selectively cooled, whereby the arrangement of several cold air sources in the housing 15 is possible. Likewise, the cold air source can be arranged such that the pairs of rollers 5, 6, 7 are covered by only one outflow of the cold air. Such a source of cold air can also be arranged in addition to a central or decentralized temperature source 20 for targeted cooling of individual components.

The openings 22, 23 for the fiber material are in the present illustration by rubber sleeves or rounded stainless steel edges 27 against the environment sealed. To open the housing 15, for example, for operating purposes, the housing is made in two parts with a removable upper part 15a and arranged on the machine 1 lower part 15b.

At the opening 17, an exhaust air line 18 is connected in the illustrated embodiment. This may for example be connected to a suction source to lead out the heated cold air in the housing from the housing. Alternatively (not shown), the opening 17 leads directly to the room environment, ie there is no exhaust duct provided. About the opening 16 of the cold air source can not be supplied cooled air. Instead of the cold air source shown here, another temperature source 20 may be arranged in or on the housing 15, wherein the opening 16 is connected to the Temperierquelle20. The opening 17 may, as stated above, be connected to a suction source, lead directly to the room environment or return via an exhaust duct 18 to the Temperierquelle20 as iri Fig. 1 shown. The illustrated cold air source can serve, for example, at the beginning of the process, the heating of the housing 15.

FIG. 3 shows a detailed representation of the roller pairs 5, 6, 7 of a drafting system 4. The roller pairs 5, 6, 7 are also here in a - not shown - 15 housing. The tempering source 20 for cooling the rollers 5, 6, 7 and the housing 15 is in this case connected to the interior of an at least partially hollow pressure rod 8, that the cooling medium K via at least one outlet opening 29 in the pressure rod 8 in the thermally higher loaded zone the main arrears field can be introduced. In order to achieve a uniform cooling of the roller pairs 5, 6, 7, a plurality of pressure rods 8 may be arranged at or between the roller pairs 5, 6, 7. Such a hollow pressure rod 8 can also be used to supply heat to the housing 15.
Alternatively or additionally, one or more feed means 24 for cooling medium K can be arranged in the interior of the housing 15 between the roller pairs 5, 6, 7, as shown here in dashed lines. The feeders 24 may be executed, for example, a hollow rod with one or more outlet openings 29, via which cooling medium K is directed to the rollers to be cooled, so that an effective cooling is achieved. The outlet ports 29 of a feeder 24 may be directed directly to the respective upstream and downstream rollers. The outlet openings 29 for the one and the other roller can thus be oriented at an angle to each other (in cross-sectional view).

It is particularly advantageous if the feed devices 24 are arranged in pairs between the rollers, so that upper rollers 5a, 6a, 7a and lower rollers 5b, 6b, 7b are each acted upon by a feed device 24 with cooling medium K. The feed device (s) 24, according to an advantageous embodiment, have no physical contact with the sliver FB '(as in FIG FIG. 3 shown).

Above the drafting system 4, a conventional suction device 30 is arranged, which removes fibers, dirt and heat from the drafting system area with the aid of a downstream, only schematically illustrated suction air source 31. In addition to the cooling, a particularly good removal of fiber material and dirt from the drafting zone can be achieved with this arrangement, since the dirt and foreign particles are fed from the main drafting field HF with or from the cooling medium K of the suction device 30.

FIG. 4 shows a further embodiment of a housing 15 and an inventive spinning preparation machine (1). The openings 16, 17 for the supply and discharge of the cooling medium K are arranged here such that the housing 15 in the upstream direction, ie in the direction of delay, flows through. In order to achieve a particularly uniform flow and cooling of the drafting system 4, two openings 16, 17 for the supply and removal of the cooling medium K are arranged on the housing. The cooling medium K is supplied to the housing 15 through a Temperierquelle20 via the openings 16. By this arrangement, two parallel flows are formed, so that top rollers 5a, 6a, 7a and bottom rollers 5b, 6b, 7b are uniformly cooled. The air or coolant flows in this case reliably dissipate the heat from the default fields VF, HF. In addition, fibers and dirt from the default fields VF, HF entrained by Kühlmitielstrom, so that no additional suction or blower is necessary. The cooling medium K and the fiber and dirt particles contained flow out of the housing 15 via the openings 17.

A further alternative embodiment of a housing 15 or an inventive spinning preparation machine is shown in FIG Fig. 5 shown. The housing 15, which is also designed in two parts, is also flowed through in the upstream direction of a cooling medium K. In addition, above the rollers 5, 6, 7 a suction device 30 with a downstream suction source 31 for removing fibers and dirt from the default fields VF, HF is arranged. The housing 15 has for this purpose a further opening 40. Instead of the suction device 30, a blow-off device (compressed-air source) can likewise be provided for this purpose.

Fig. 6 shows an embodiment of a two-part housing 15, in which the upper part 15a, in which the supply and the discharge openings 16, 17 are provided, is made pivotable (see f ₁ ). The upper part 15a is for this purpose connected to the loading arm 32, so that when pivoting the loading arm 32 about an axis 35, the housing 15 is opened. The upper part 15a can for this purpose be fixedly mounted on the loading arm 32 or only loosely rest thereon. The lower part 15 b is arranged on the spinning preparation machine 1. In the present example, the calender rolls 11,12, on which there is also a considerable heat development, arranged in the housing. In order to ensure accessibility to the drafting device 4 from the top even when the loading arm 32 is resting on the housing 15, a pivotable about an axis 34 on the housing 15 Flap 33 (see f ₂ ) provided. This can also be made of transparent material to allow visual inspection of the stretching process with the housing 15 closed. The reference numeral 36 plastic spacers are referred to, which can ensure a higher density of the housing 15 at the same time.

A schematic representation of a temperature source 20 for temperature control of a housing 15 is shown in FIG Fig. 7 shown. About the terminal 37, the temperature source 20 is pressurized with compressed air. By irreversible, adiabatic expansion in the interior of the Temperierquelle 20 cold air K is generated, which flows through the terminal 38 from the Temperierquelle20. At constant pressure and constant temperature of the incoming air, cold air K of largely constant temperature can be provided. By an adjusting valve 39, the temperature and the outflowing volume of cold air K is adjustable. With such a cold air source 20, the working temperature in the interior of the housing 15 can be generated in a particularly simple, cost-effective and space-saving manner. For this purpose, the tempering source 20 can be arranged in or on the housing 15, as well as the arrangement of several Temperierquellen20 is possible.

The invention is not limited to the illustrated embodiments. Rather, numerous modifications of the invention and combinations within the scope of the claims are possible.

Claims (23)

1. A preparatory machine for spinning (1), in particular a draw frame or carding machine having a drafting system (4) with multiple roll pairs (5, 6, 7), comprising upper rolls (5a, 6a, 7a) and under rolls (5b, 6b, 7b), in which a fiber band (FB) can be drafted, wherein said roll pairs (5, 6, 7) are placed in a housing (15), which isolates them from driving units of the machine (1), therein characterized, in that the housing (15) separates the roll pairs (5, 6, 7) from the ambient room climatic conditions which surround the machine (1) and from further components of the machine (1) and that at least one temperature controller (20) is assigned to the housing (15), which serves to cool and/or heat the interior space of the housing (15).
2. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is designed for the generation of an essentially constant temperature at the level of preferably 40 °C.
3. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is designed for the production of different, adjustable temperatures.
4. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) includes a source of cold.
5. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) includes a source of heat.
6. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is a central air conditioning unit for the servicing of a plurality of machines (1).
7. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is placed locally in or on the preparatory machine for spinning (1).
8. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that as a temperature controller (20) a cold air source is placed in or on the preparatory machine for spinning (1).
9. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that at least one line (18) through an opening (16) in the housing (15) for the inlet of the cooling medium (K) prepared by the at least one temperature controller (20) is provided and one opening (17) is provided in the housing (15) for the outlet of the cooling medium from the housing (15).
10. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is placed within the housing (15).
11. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is in communication with the interior of at least one hollow pressure bar (8), whereby the cooling medium (K) prepared by the temperature controller (20) enters into the hollow of the pressure bar and exits it through at least one opening of the pressure bar (8).
12. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that in the housing (15) is placed at least one entry apparatus (24) for the cooling medium (K). which is connected to the at least one temperature controller (20) and which possesses at least one outlet port (29) through which the cooling medium (K), which has been prepared by the temperature controller (20), can find outlet.
13. A preparatory machine for spinning according to the foregoing claim, therein characterized, in that the at least one entry apparatus (24) is designed as a hollow bar.
14. A preparatory machine for spinning according to claim 13 or 14, therein characterized, in that the at least one outlet opening (29) is directed at one of the rolls (5a, 6a, 7a, 5b, 6b, 7b).
15. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that a flow of air, especially cold air, from the at least one temperature controller (20) is directed at the upper rolls (5a, 6a, 7a) of the drafting system (4).
16. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the cooling medium (K) prepared by the at least one temperature controller (20), especially being cold air, can be conducted through the housing (15) in a direction contrary to that of the drafting direction.
17. A preparatory machine for spinning according to one of the claims 1 to 16, therein characterized, in that the cooling medium (K) produced by the at least one temperature controller 20, this especially being cold air, can be conducted through the housing (15) in the direction of the drafting.
18. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the cooling medium (K), produced by the at least one temperature controller (20) can be guided through the housing (15) in such a manner, that fibers and/or contaminant can be entrained therein and transported out of the said housing (15).
19. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that a suction producing device (31) is assigned to the housing (15) for the removal of fibers and/or contaminant by means of air under suction.
20. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is connected to a source of compressed air, in order that fibers and contaminant may be transported out of the housing (15) by means of the air provided by the temperature controller (20).
21. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) is bound to an electronic control system.
22. A preparatory machine for spinning according to one of the foregoing claims, therein characterized, in that the at least one temperature controller (20) can be regulated.
23. A preparatory machine for spinning according to the foregoing claim, therein characterized, in that for the regulation of the at least one temperature controller (20) at least one sensor (25) for the determination of the temperature and/or further parameters is placed in or on the housing (15).

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