EP2006425A1 - Device for a spinning preparation machine - Google Patents

Abstract

A textile spinning assembly receives fibres from a drafting station (1) with rollers (37, 47). The drafting station has a reversible and removable support (2) between the fibre belt channel (71) and fibre (FM) consolidation unit (20) producing a consolidated fibre band (FB). A feed station (11) is located downstream from the consolidation unit to feed the fibre band into the fibre belt channel (71) for surrender to the spinning can (K).

Description

The invention relates to a device for the arrangement of the output-side drafting rollers of a drafting system.

It is known to provide a compaction device in spinning preparation machines with a drafting system following the drafting rollers, which unites the fiber material spread in the drafting system. In one stretch, the fiber material in the drafting system is present as a nonwoven, which is then conveyed to a sliver by a pair of calender rolls in a rotating band channel after subsequent compaction, which stores the sliver looped into a sliver can.

It is known, for example, from the line RSB-D 40 from Rieter Ingolstadt Spinnereimaschinenbau AG to use a fleece nozzle with a nonwoven guide nozzle for compacting, to which a belt hopper with injector channels is connected downstream. The belt leaving the belt hopper is transported by the calender rollers to a separate injector, which threads the belt into the belt channel.

This known arrangement has proven very well. In a more compact design of the drafting system, however, the components are closer together, which relates to the handling and accessibility of the individual components in the downstream of the drafting area.

It is an object of the present invention to provide a device between a drafting and a belt channel, in which the handling and accessibility is facilitated.

This object is achieved in a device of the type mentioned by the features of claim 1.

The advantages of the invention are to be seen in particular in that a compact structural unit is obtained by the carrier according to the invention, in which the main fleece and tape guide elements integrated or on which they are provided. This results in an extremely easy handling. The carrier also has the advantage that the number of individual components can be significantly reduced. Accordingly, the user does not necessarily have to handle individual parts in the small construction space, but can remove the support with the components arranged thereon, in particular the compression device and the threading device, from its operating position and reinsert it as a whole. For this purpose, only the calender roll facing away from the drafting device has to be swung away or otherwise removed, in order then to detach and remove the carrier together with the compacting and threading device from the operating position by preferably a single handle.

Preferably, the carrier is designed as a peripheral frame. The compression device is then arranged on an upper frame part and the threading device is arranged on a lower frame part. The two frame parts are preferably connected by lateral struts. According to an alternative, only one side has a strut. These embodiments facilitate handling and promote the compactness of the construction.

A closed design of the frame promotes its rigidity and thus the precise storage in its operating position.

The carrier is preferably brought by a substantially linear movement in its operating position between drafting and belt channel and removed from this again. The carrier is hereby preferably touched on its two lateral struts and guided from the front to its operating position.

Cumbersome movements in several directions are unnecessary. Here, the carrier may be e.g. with both hands to the left and to the right of the calender rolls and be brought into position. Alternatively, the carrier can also be positioned with one hand, which even further accommodates simplified handling

Particularly preferably, the compression device and / or the threading device or parts of the aforementioned elements are integrally formed on the support, otherwise mechanical stresses, unadjusted connections or fiber accumulations at the connection points could result.

The compacting device and the threading device are particularly preferably designed and arranged such that the calender rolls find space between them. These provide for the transport of the formed in the densification device sliver in the subsequent band channel, being provided directly after the calender rolls the threading device.

A nearly closed web and tape guide from the compacting device or even from the output cylinder of the drafting system into the strip channel of the turntable results when the compacting device from one side and the threading device protrude from the other side into the respective gap formed by the calender rolls. By reaching from above into the calender nip compression device, the lateral deflection of the sliver during the insertion process in the direction of the nip line of the two calender rolls is prevented. In addition, the extremely short sliver path from the drafting system into the sliver channel as well as the widely available guidance of the sliver via the mentioned running path provides a very small susceptibility to interference, since the sliver has no opportunity to emerge in open areas.

Preferably, the compacting device comprises a fleece nozzle, which may be similar to known nonwoven nozzles for collecting the stretched, present in nonwoven form fiber material. In a related embodiment, the nonwoven nozzle preferably comprises a pivotable wall plate, which is held by magnets on the carrier, and pivots away from the carrier against the magnetic force in case of congestion in the nonwoven nozzle. In this case, the tilted wall plate can purposely derive the jammed but initially further conveyed nonwoven from the calender area. In addition, a stop signal is preferably given to the machine by means of an electrical contact. By pivoting away from the drafting and forward an operator then easy access to the fleece nozzle, if it should come to blockages with fiber material.

Preferably, the carrier is gripped on the pivotable wall plate with the hands or with one hand, so that - if necessary, in addition to a gripping on the above-mentioned lateral support struts - here, the handling is facilitated as a whole.

It has also proved to be advantageous that the carrier is held by magnets on a drafting device holder. On the one hand, the carrier is then removable by appropriate exercise of force in a simple manner, on the other hand held securely in its operating position. Should coils form on the output top roller or on the calender or if there is a disturbance in the area of the fleece nozzle, it is possible with this construction that the undesirably accumulated fiber material pushes the carrier out of its operating position. As a result, an electrical contact (or the interruption of an electrical contact) can then cause an automatic shutdown of the spinning preparation machine. Alternatively or additionally, a sensor may be used here, which monitors the operating position of the carrier and advantageously also the pivotable wall plate located thereon.

According to one embodiment of the invention, the carrier is held in each case a cylindrical bearing on both sides of the carrier by means of magnets. The magnets on the one hand are preferably designed to be adjustable, so that the other side of the carrier can fit tightly against the cylinder bearing there. In this way a sealless air supply can be guaranteed (see below).

A further structural simplification results when a stripper for one of the calender rolls is arranged on the compacting device.

The compression device advantageously has at least one Injektorbohrung which is connected to a first air supply line for compressed air. Advantageously, at least two injector bores are provided to provide the nonwoven with sufficient thrust for transport through the throat of the compactor.

The one or more injector bores are preferably formed in an insert which can be inserted into the nonwoven nozzle. The compression device is formed in this embodiment essentially by the fleece nozzle and the fleece nozzle insert. A commonly existing in known machines band hopper between the fleece nozzle insert and the calender rolls can be omitted in this embodiment.

The threading device also advantageously has at least one injector bore, which is connected to a second air supply line for compressed air. Again, two Injektorbohrungen preferred to produce the desired spin in the band before filing in the spinning can.

The first air supply line and / or the second air supply line particularly preferably run in the carrier, since this no space-intensive and disturbing in handling hoses in the control room are needed. In otherwise existing hoses can further at a Tape accumulation at the fleece nozzle or in similar disturbances undesirably deposit fiber material on the hoses, which further complicates the handling. Also, care should be taken when inserting parts in the operating position on the hose routing.

The first and the second air supply line are particularly preferably fed by a common supply feed provided on the carrier, since then only a single external air supply to the carrier must be present. Advantageously, no seal is used here at the compressed air transfer point of the feed supply. Preferably, the carrier is instead located close to the corresponding compressed air transfer point, for example with the aid of the cylinder bearings mentioned above.

Preferably, the first and the second air supply line are formed by bores in the carrier, wherein furthermore preferably a manifold in the carrier from the feed supply leads to a branch from which the first and the second air supply line branch off.

Preferably, the amount of compressed air supplied in both air supply lines is independently adjustable, possibly even until closing or interrupting one of the two air supply lines. For this purpose, a manual adjustment or an electrically controlled or regulated adjustment can be provided.

The described air supply in a solid component - in particular embodied as bores, preferably in the mentioned carrier - to the injector bores of the compression and / or the threading device can also be regarded as a separate invention aspect. Prolonged, vulnerable hose connections to the injector bores can be dispensed with. The space available and access accessibility are optimized and the handling is significantly increased. In this type of air supply line (s) is an embodiment of a carrier with arrangement both the compaction and the threading device not necessary, but of course possible. The other described design options (feed supply, manifold, branched from the manifold air supply lines, adjustability of air supply, etc.) are included in this separate aspect of the invention as advantageous developments - regardless of whether a carrier is present or whether the carrier according to the first aspect of the invention is trained. It may also be possible for a separate holder or a separate carrier to proceed both for the compacting device and for the threading device. In this case, then preferably run the air supply lines in the respective holder.

The invention also relates to a spinning preparation machine, in particular a carding machine, track or combing machine, with a drafting system, wherein the spinning preparation machine has a device of the previously described embodiment.

The drafting system of the spinning preparation machine according to the invention is preferably arranged inclined, wherein the or the fiber webs extended to a fiber web viewed in the direction of running obliquely downwards through the drafting system. The drafting system is preferably operated from the front - possibly with the help of a pedestal as Standerhöhung. The user, in one related embodiment, has access to the carrier with both hands passing past the loading arm on the left and right. The calender roll facing it and the upper rolls are usually suspended from the loading arm.

The drafting system is preferably inclined with respect to the horizontal in such an arrangement, preferably with an inclination between 40 ° and 75 ° relative to the horizontal.

Due to the inclination of the drafting system can be dispensed with a Umlenkoberwalze, so that the drafting system is preferably designed as a 3-over-3 drafting, so has a pre-and a main drafting field without downstream Umlenkoberwalze.

Advantageous developments of the invention are characterized by the features of the subclaims. Within the scope of the claims, any combinations of the features listed in the claims and in the description including the subsequent description of the figures are possible.

Figur 1

eine Seitenansicht eines Streckwerks mit Bandablagevorrichtung;

Figur 2

das Streckwerk der Figur 1 mit Zugriff eines Bedieners;

Figur 3

eine Aufsicht auf das Streckwerk gemäß der Figur 2;

Figur 4

eine geschnittene Seitenansicht eines geneigten Streckwerk mit nachfolgender Verdichtungs- und Einfädeleinrichtung;

Figur 5

eine Detailansicht der Anordnung gemäß der Figur 4;

Figur 6

eine Seitenansicht auf einen Träger mit integrierter Verdichtungs- und Einfädeleinrichtung;

Figur 7

der Träger gemäß der Figur 6 in Vorderansicht, geschnitten entlang B-B der Figur 8, und

Figur 8

der Träger gemäß den Figuren 6 und 7 in Seitenansicht, geschnitten entlang A-A der Figur 7.

In the following an embodiment of the invention will be described in more detail with reference to the figures, wherein the same reference numerals are used for the same functional elements. Show it:

FIG. 1

a side view of a drafting system with tape storage device;

FIG. 2

the drafting system of FIG. 1 with access by an operator;

FIG. 3

a view of the drafting according to the FIG. 2 ;

FIG. 4

a sectional side view of an inclined drafting with subsequent compression and Einfädeleinrichtung;

FIG. 5

a detailed view of the arrangement according to the FIG. 4 ;

FIG. 6

a side view of a carrier with integrated compaction and threading device;

FIG. 7

the carrier according to the FIG. 6 in front view, cut along BB the FIG. 8 , and

FIG. 8

the carrier according to the FIGS. 6 and 7 in side view, cut along AA the FIG. 7 ,

In the Figures 1 and 2 the essential parts of a route are shown schematically as an example of a spinning preparation machine in side view. The heart of the route is the drafting system 1, in which one or more of the drafting 1 presented slivers FB - spread to a nonwoven - are stretched in a known manner. In this case, the fiber sliver or FBs pass through the drafting system 1 in the direction f3 (see FIG. FIG. 1 ). This results in the output of the drafting 1 a uniformed fiber fleece, which is compressed in a compacting device 20 to a sliver FB and transported by a Kalanderwalzenpaar 38, 48 in a usually curved band channel 71, which is integrated in a turntable 72 and stored in a pot K. becomes. The turntable 72 and thus the belt channel 71 rotate about a vertical, indicated by a dashed line axis. Likewise, the pot K is rotated by being placed on a rotating can plate 73. The two vertical axes of rotation of the can plate 73 and the turntable 72 are known to offset each other, so that the sliver FB is deposited in cycloidal form in the pot K.

The pot K is in an opening of a substructure 62, which also carries the drafting system 1. In front of the substructure 62 a pedestal 63 is arranged, which can be climbed by an operator B.

For drawing the fiber slivers or FBs presented, the drafting system 1 in the present case comprises three pairs of rollers (see FIG. FIG. 2 ). This is on the one hand, the input roller pair, which consists of the input sub-roller 35 and the input upper roller 45. This is followed in the direction f3 of the slivers FB or the middle lower roller 36 and the middle upper roller 46. Together, the rollers 35, 45, 36, 46 form the so-called. Vorverzugsfeld. The last pair of rollers in the drafting 1 is the output lower roller 37 and the Output top roll 47 is formed, which, together with the central rollers 36, 46, the so-called. Main drafting field. The mentioned roller pairs run at different peripheral speeds, so that the fiber sliver or ribs FB, which are spread in the drafting system 1 to form a nonwoven and clamped along the nip lines of the respective roller pairs, are warped in accordance with the ratio of the circumferential speeds.

The lower rollers 35, 36, 37 are end-mounted in bearings 31, 32 and 33, respectively (see FIG. FIG. 1 ), which in turn are arranged on a support body 65. The upper rollers 45, 46, 47 are mounted in a loading arm 50 with two side cheeks 52a, 52b (see FIG. FIG. 3 ), which are connected at their free ends by means of a horizontal rod 54 and are mounted at their other end in each case in a pivot bearing 58. By means of this articulation of the loading arm 50 is pivotable about the pivot axis 59, s. Arrow f2 in FIG. 1 , In order to realize an optimal clamping action of the sliver FB or in the drafting system 1, the load arm 50 with its hinged upper rollers 45, 46, 47 by means of two pivoting lever 75 in the in FIG. 1 locked load position shown locked. The pivot levers 75 engage with their end claws on the horizontal bar 54 of the loading arm 50. When pivoting the pivot lever 75 about the pivot axis 76 (see arrow f1), the loading arm 50 is free and can be pivoted about the pivot axis 59. This situation is in FIG. 2 shown.

That in the Figures 1-3 shown drafting 1 is a so-called. 3-over-3 drafting system, which is inclined in the present case by about 45 ° relative to a horizontal plane to the operator B.

It should be noted that in the Figures 1 and 2 only mechanical components of the route are shown. Regulating facilities, central computer, drives and the like Like. Are not shown because they are not essential in the context of the present invention and preferably the known designs correspond. In this case, drives with belt transmission as well as individual drives and mixed forms are possible.

Like that Figures 1 and 2 can be seen, an operator B of the drafting 1 approaches from the front of the track by first on the pedestal 63 rises to work at the optimum height. The drafting system 1 is then arranged in front of the abdomen and chest of the operator B. In order to access the one or more fiber ribbons FB in the drafting 1 - for example, for inserting tape ends to the stretching bands or to clean the drafting 1 - he unlocks the load arm 50 to then these to pivot towards him. In the supervision according to the FIG. 3 is the open drafting 1 again shown for the sake of clarity.

From the Figures 2 and 3 It can be seen that the operator B grips around the loading arm 50 on both sides in order to be able to access the drafting device 1 or the fiber sliver FB or slivers FB. Since the free end of the loading arm 50 assumes its rest position in front of its chest, the operator B has a clear view across the loading arm 50 on the drafting system 1. The convenient operation is supported by the inclined arrangement of the drafting system. 1

In the FIGS. 4 and 5 is a section of a opposite the drafting 1 of the Figures 1-3 even further inclined drafting 1 (about 60 ° relative to about 45 °) with a compression device 20 and a threading device 10 is shown. In the drafting system 1 is in addition to the in the Figures 1-3 shown execution each provided on the lower rollers 35, 36, 37 cleaning rod 39; In addition, a push rod 49 is arranged in a known manner in the main drafting field.

As related to the Figures 4-8 becomes clear, the compacting device 20 and the threading device 10 is integrated in a carrier 2, wherein essential parts of the two devices 20, 10 are formed integrally with the carrier 2. The carrier 2 is designed as a peripheral, closed frame with an upper frame part 3 and a lower frame part 4 extending parallel thereto and two lateral struts 5, 6 connecting the two frame parts 3, 4. In the upper half of the carrier, the compression device 20 is provided, in the lower the threading device 10. Between these two is a central opening 11 proceed, in which from both sides the calender rollers 38, 48 engage, indicated in FIG. 6 through the two dashed circles.

The compacting device 20 comprises a fleece nozzle 21 formed in the carrier 2, which has a concavely curved contour 23 (see FIG. FIG. 7 ), against which the stretched fiber fleece attacks head-on. In this way, the fleece is forcibly deflected to a fleece nozzle insert 26 inserted centrally into the fleece nozzle 20, so that it leaves the fleece nozzle 21 shaped into a fiber band FB. The fleece nozzle 21 is limited to the bearings 31-34 through a rigid wall 22, the operator B through a wall plate 24 which is pivotable in a receptacle 25. In the FIG. 4 is the wall plate 24 in the working position in which it is held by magnets 29 on the upper frame part 3, and in FIG. 5 shown in fault position. When tape jamming in the fleece nozzle 21, the fleece presses the wall plate 24 from the working to the fault position, wherein an electrical contact causes the shutdown of the machine.

On the wall plate 24 opposite side of the compacting device 20, a scraper 28 is mounted, the free end abuts the calender roll 48 and scraping fiber material.

The fleece nozzle 21 tapers in the direction of the calender rolls 38, 48 and projects with a blunt tip 8 into the upper gap formed by the calender rolls 38, 48. This means that the fiber sliver FB after leaving the nonwoven nozzle 21 or the nonwoven nozzle insert 26 immediately from the calender rolls 38, 48 is detected and no free paths must go through, which would otherwise increase the risk of tape disturbances.

In fleece nozzle insert 26 two obliquely opposite to the vertical, from the outside to the inside of the insert 26 continuous Injektorbohrungen 27 are provided which serve to transport an initially loose sliver end by the insert 26. The two injector bores 27 are supplied with compressed air which is ensured by a supply feed 15 provided on the support 2, wherein no seal is used at the compressed air transfer point in the present case. The feed supply 15 supplies a manifold 17 running in the carrier 2 with air, which in turn opens into a first air supply line 18, which finally leads to the injector bores 27. The lines 17, 18 are designed as holes in the carrier 2.

The threading device 10 is arranged below the calender rolls 38, 48 and serves to thread the sliver FB into the following band channel 71. A blunt tip 7 of the threading device 10 protrudes into the lower gap formed by the calender rolls 38, 48. The threading device 10 comprises an insert 12 inserted from below, which faces the band channel 71, and which is or the like with a grub screw 12a. (S. FIG. 6 ) is held in the carrier 2.

Also in the insert 12, two injector bores 13 are provided, which help to transport the sliver FB on the one hand into the band channel 71, and on the other serve to generate swirl in the band FB. The two Injektorbohrungen 13 are fed via an air supply line 14, in which the manifold 17 opens. The line 14 is formed as a bore in the carrier 2.

While the bore opening of the vertical bore for the manifold 17 is closed and sealed by a blind plug 16, a grub screw is provided in each of the bore holes of the first and second air supply conduits 18, 14 or throttle screw 16b or the like. screwed, which can close the transition from the manifold 17 in the first and second air supply line 18 and 14 different degrees. In this way, the air supply to the Injektorbohrungen 18 and 14 regulate. Alternatively, a controlled valve mechanism could also be realized.

The carrier 2 can be easily grabbed with both hands or with one hand on the lateral struts 5, 6 and / or the wall plate 24 and in almost linear movement (corresponding to the double arrow f4) in his in the FIGS. 4 and 5 bring shown working position and remove it again. For this purpose, two lateral guide grooves 19 (s. FIG. 7 ) on the struts 5, 6 which slide upon insertion and removal of the carrier 2 along two non-illustrated pins on the machine. The carrier 2 is held by means not shown magnets in cylinder bearings on a drafting device holder so that it can be removed from its working position against this force. Also, in the case of a ribbon jamming or winding formation in the area of the exit rollers and / or the calender rollers, the carrier 2 can be forced out of its working position by the fiber material, the machine then advantageously being shut off automatically by means of an electrical contact or by sensor triggering.

The invention has been described in more detail with reference to an embodiment. Within the claims further refinement possibilities can be realized. For example, the carrier can also consist of two or more frame parts, which are screwed together or otherwise firmly and possibly releasably connected to each other. Again, the carrier is preferably brought as a whole in its working position or removed from this.

Claims (31)

Device for the arrangement on the output side drafting rollers (37, 47) of a drafting system (1), characterized by a support (2) which can be reversibly inserted and removed again between the drafting system (1) and a subsequent belt channel (71), on the one hand a compacting device ( 20) for combining the drafting material leaving fiber material (FM) to a sliver (FB) and on the other hand downstream of the compacting device (20) has a threading device (10) for threading the sliver (FB) in the band channel (71) for depositing the sliver (FB ) in a spinning can (K) o. The like. Are arranged. Apparatus according to claim 1, characterized in that the carrier (2) is designed as a peripheral frame. Device according to one of the preceding claims, characterized in that the carrier (2) is formed circumferentially and closed. Device according to one of the preceding claims, characterized in that the carrier (2) by a substantially linear movement (f4) in an operating position between drafting (1) and belt channel (71) can be brought and removed from this again. Device according to one of the preceding claims, characterized in that the carrier (2) with both hands on the left and right of the calender rolls (38, 48) is tangible and can be brought into its operating position. Device according to one of the preceding claims, characterized in that the carrier (2) can be positioned with one hand. Device according to one of the preceding claims, characterized in that the compression device (20) and / or the threading device (11) or parts of the aforementioned elements (20, 12) are integrally formed on the carrier (2). Device according to one of the preceding claims, characterized in that the compression device (20) and the threading device (10) are designed and arranged such that between them the calender rolls (38, 48) find place. Device according to one of the preceding claims, characterized in that the compression device (20) and the threading device (10) protrude from opposite sides into the gap formed by the calender rolls (38, 48). Device according to one of the preceding claims, characterized in that the compression device (20) comprises a fleece nozzle (21). Apparatus according to claim 10, characterized in that the fleece nozzle (21) comprises a pivotable wall plate (24) which is held by magnets (29) on the carrier (2), and in the formation of congestion in the fleece nozzle (21) against the magnetic force from the carrier (2) wegschwen kt. Apparatus according to claim 11, characterized in that the carrier (2) on the pivotable wall plate (24) is engageable with the hands. Device according to one of the preceding claims, characterized in that the carrier (2) is held by magnets on a drafting device component. Apparatus according to claim 13, characterized in that the carrier (2) is held on its two sides in each case in a cylinder bearing with the aid of the magnets. Spinning preparation machine according to one of claims 11 to 14, characterized in that the operating position of the carrier (2) and the pivotable wall plate (24) located thereon is monitored by means of a sensor. Device according to one of the preceding claims, characterized in that the compression device (20) has at least one Injektorbohrung (27) which is connected to a first air supply line (18) for compressed air. Device according to Claim 16, characterized in that the at least one injector bore (27) is provided in a fleece nozzle insert (26) which can be inserted into the fleece nozzle (21). Apparatus according to claim 16 or 17, characterized in that the first air supply line (18) extends in the carrier (2). Device according to one of the preceding claims, characterized in that the threading device (10) has at least one Injektorbohrung (13) which is connected to a second air supply line (14) for compressed air. Apparatus according to claim 19, characterized in that the at least one Injektorbohrung (13) in an insert (12) is provided, which is insertable into an opening of the carrier (2). Apparatus according to claim 19 or 20, characterized in that the second air supply line (14) extends in the carrier (2). Device according to one of claims 16 to 21, characterized in that the first and the second air supply line (18, 14) from a common, on the carrier (2) provided feed supply (15) are fed. Apparatus according to claim 22, characterized in that at the compressed air transmission point of the feed supply (15) no seal is used Apparatus according to claim 22 or 23, characterized in that a collecting line (17) in the carrier (2) from the feed supply (15) leads to a branch, from which the first and the second air supply line (18, 14) branch off. Device according to one of claims 16 to 24, characterized in that the first and the second air supply line (18, 14) are formed by bores in the carrier (2). Device according to one of claims 16 to 25, characterized in that the air supply in the two air supply lines (18, 14) is independently adjustable. Device according to one of the preceding claims, characterized in that a scraper (28) for one of the calender rolls (38) is arranged on the compacting device (20). Spinning preparation machine, in particular carding machine, track or combing machine, with a drafting system (1), characterized by a device according to one of the preceding claims. Spinning preparation machine according to claim 28, characterized in that the drafting device (1) is arranged inclined, wherein the one or more fiber ribbons (FB) seen in the running direction (f3) obliquely downwards pass through the drafting system (1). Spinning preparation machine according to claim 28 or 29, characterized in that the drafting arrangement (1) is inclined between 40 ° and 75 ° with respect to the horizontal. Spinning preparation machine according to one of claims 28 to 30, characterized in that the drafting device is designed as a 3-over-3 drafting system.

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