EP0394885B1 - Mobile cleaning and operating device for textile machinery - Google Patents

Abstract

In a mobile cleaning and operating device (10) for textile machines (26), especially for high-speed ring spinning machines, a suction and/or blowing unit (16) is provided laterally of the textile machine (26), the cleaning and operating device (10) having at least one operating arm (46) which is mounted movably relative to the suction and/or blowing unit (16). The operating arm (16) can be moved into a working position, in which it can be activated in the immediate vicinity of working elements of the textile machine (26). At the same time, at least one further operating function can be carried out. <IMAGE>

Description

The invention relates to a movable cleaning and operating device for textile machines, in particular for high-speed ring spinning machines, according to the preamble of claim 1, and to a method for cleaning and operating textile machines, according to the preamble of claim 13.

It is known to have cleaning and operating devices successively clean a plurality of work units such as spindles of textile machines such as high-speed ring spinning machines. For this purpose, a plurality of suction hoses and blow hoses are each moved into the working position corresponding to the textile machine and cleaning is effected by blowing on or suctioning off the spindles. Even if with a correspondingly large air capacity. the elimination of the flight is satisfactory here, especially if the textile machines have an internal suction channel, the known cleaning and operating devices reach their limits when high-speed ring spinning machines have to be cleaned very intensively to achieve trouble-free operation and at the same time have a limited performance for cleaning - and control unit is available.

A cleaning device with various auxiliary devices is known from EP-192 014. A robot arm can select the nozzle equipment for blowing and suction lines and, if required, attach a rotating brush. This is to achieve a more intensive cleaning of the textile machine.

To achieve intensive cleaning, it is known to couple a thread tying machine to a suction unit, which is activated when a thread has already broken due to thread tension being too high or due to impurities such as excessive fiber flight. The thread tying machine then automatically moves to the spindle on which damage is to be repaired and cleans it at the same time. The disadvantage here is that intensive cleaning only takes place when the damage has already occurred.

In order to counteract this, it is known to additionally have separate suction and blowing units perform a continuous cleaning operation along separate or the same travel rails. When using separate rails, however, additional investments are required, especially since busbars, etc. are also required separately.

On the other hand, when using the side rails there is the problem that the suction and blowing unit must always avoid the thread tying device when a working unit requires the use of the thread tying device.

Furthermore, it is known from the generic DE-PS 28 15 188 to provide the suction and blowing unit on the side of the textile machine and for this purpose to be equipped with a plurality of comparatively short suction and blowing hoses, so that a comparatively large air capacity can be provided per se. A certain adjustment possibility is given in this state of the art, since the blow hoses can be brought manually in the desired direction, the adjustment being made to different types of textile machines when the suction and / or blow unit is at a standstill.

Another problem with the known cleaning and operating devices is the whorl valve control. While in comparatively slow-running spinning machines, the whirl flap control, which is operated by blowing nozzles and consists of pushing a whirl knife via a plate acted upon by a blowing nozzle, is quite sufficient, fast-running spindles, particularly for polyester yarn, tend to stick the whirl knife. Since the spindle cannot be stopped immediately even if it is switched off immediately, sticking it together leads to scorching and therefore to the replacement of the whirling knife in question. For these reasons, the built-in whorl valve controls are often disassembled however, manual cutting with appropriate stopping of the spindle is required.

The known cleaning and operating devices for textile machines are accordingly often unsuitable for high-speed operation and cannot reliably prevent malfunctions that occur.

It is therefore an object of the invention to provide a cleaning and operating device according to the preamble of claim 1, and a method for cleaning and operating textile machines according to the preamble of claim 13, which enables continuous and trouble-free operation with comparatively low energy consumption.

This object is achieved according to the invention by the characterizing features of claims 1 and 13, respectively. Advantageous further developments result from the subclaims.

From the features according to the invention there is first the advantage that the desired functions can be carried out with a single cleaning and operating device, which not only has advantages in terms of the energy consumption involved, the rails and electrical lines to be installed, but also prevents it in principle, that conflict situations can occur with other devices. A particularly efficient cleaning can be provided by literally engaging the blowing nozzles or the suction nozzles in the work elements to be cleaned and virtually enclosing them, so that the cleaning can be carried out precisely at the points at which the fiber fly arises.

As a particularly advantageous aspect, it is provided that contour nozzles adapted to the surface of the drafting rollers for cleaning the drafting system into the space between the pendulum supports to intervene and to carry out the necessary removal of the cleaning rollers at the same time for cleaning them by means of a wire brush roller attached to the cleaning device. For this purpose, the cleaning rollers can be lifted off with a separate operating arm and transferred to the cleaning position, in which case a rotation drive of the cleaning rollers can then be effected by contact with the wire brush roller, which in connection with suction extraction of the contact point between the wire brush roller and cleaning roller for cleaning the cleaning roller of wound fiber fly leads.

In this cleaning process, the centrifugal effect can be advantageously used with a fast drive of the cleaning rollers, the wire tips of the wire brush roller additionally lifting off the fiber winding.

It is also particularly favorable that the disadvantages of the prior art can be avoided with the measures according to the invention. For example, the existing air output can be used several times by switching the air flows and, in addition to suction and / or blowing, a further operating function can be provided.

According to a further embodiment, it is provided to combine a high pressure blower with a comparatively low air volume conveyed with a low pressure blower with a comparatively large air volume conveyed, the high pressure blower being used for the targeted cleaning of the working elements of the textile machine and the low pressure blower for example acting on a footwell nozzle or for suction of the cleaning roller is used in the cleaning position.

According to a further advantageous embodiment of the invention, a suction or blowing space in the area of the cops is provided with a whirl knife which can be triggered in a targeted manner. The cut off Thread residue can be removed from the associated suction or blowing arm, so that it cannot be wrapped up, and faults which can be generated thereby are avoided. Due to a special construction of the whirl knife, even at high rotational speeds of the spindles of, for example, 25,000 revolutions per minute and the spinning of polyester, sticking with subsequent burning of the whirl knife can be avoided without the rotational speed having to be reduced for cutting off.

In order to achieve this, a combination of spring elements according to the invention with guide elements according to the invention can be used, wherein the spring element according to the invention can also consist of an impact surface, for example made of metal, which acts immediately after the cutting when the whirling knife rebounds. The guide elements for the whirl knives accelerate the whirl knives in the area of the cutting edge in the circumferential direction when the cops are approached, wherein the rebounding of the whirl knife can also be used to bring the whirl knife back into the starting position. Before the triggering, the triggering impact bar is expediently under a spring bias acting in the actuating direction of the whirling knife, while the trigger rod can be brought back into the ready position before triggering by pneumatic or electrical means.

To facilitate cutting, the movement of the whirl knife can at the same time be given a vertical component due to a correspondingly designed guide profile, which on the one hand increases the service life of the whirl knife and increases the safety of the cut.

According to the invention, it is particularly favorable that the whirling area can be cleaned continuously as soon as the ring bank has reached the corresponding height, the cleaning intensity can be ensured to the desired extent even with very long textile machines if six or even twelve work units such as spindles are subjected to simultaneous cleaning by the cleaning and operating device according to the invention.

With the time control according to the invention, it is possible to start whirl cleaning at the earliest possible point in time, for example when one third of the spinning cycle has elapsed while the cleaning in the drafting system area was carried out beforehand. It goes without saying that, with a corresponding power reserve, simultaneous suction of the drafting system and the whirling area can also take place, while it is particularly favorable to reverse the existing air power, the existing fan being usable for blowing and suction purposes at the same time.

Further details, advantages and features result from the following description of an embodiment of the invention with reference to the drawing.

Fig. 1

eine schematische Ansicht einer Ausführungsform des erfindungsgemäßen Reinigungs- und Bedienungsgeräts;

Fig. 2

einen Schnitt einer Ausführungsform eines erfindungsgemäßen Wirtelmessers;

Fig. 3

eine schematische Darstellung von je vier Stellungen des Wirtelmessers während des Schneidvorgangs, in horizontaler und seitlicher Ansicht; und

Fig. 4

eine schematische Ansicht einer Konturendüse gemäß Fig. 1.

Show it:

Fig. 1

is a schematic view of an embodiment of the cleaning and operating device according to the invention;

Fig. 2

a section of an embodiment of a whirl knife according to the invention;

Fig. 3

a schematic representation of four positions of the whorl knife during the cutting process, in horizontal and side view; and

Fig. 4

2 shows a schematic view of a contour nozzle according to FIG. 1.

A cleaning and operating device 10 has a frame 12 and can be moved on a floor-side travel rail 14. In a lower area of the cleaning and operating device 10, a suction and / or blowing unit 16 is arranged, to which a suction and / or blowing arm 18 for whirl cleaning, as well as a suction and / or blowing hose for the drafting area is connected. Furthermore, a suction nozzle 19 is connected for floor cleaning.

Another operating arm is designed as a gripping arm 22 and is suitable for lifting a cleaning roller 28 lying obliquely above a drafting unit 24 of a textile machine 26 and pivoting it into a cleaning position 30. In the cleaning position 30, the cleaning roller 28 bears against a wire brush roller 32, which is rotated by a drive device 34 and in turn rotates the cleaning roller 28.

The fibers loosened by the engagement of the wire ends of the wire brush roller 32 in the cleaning roller are detected via a collecting nozzle 36 and suctioned off from the suction and / or blowing unit 16 via a hose connection (not shown). The gripper arm 22 is pivotally mounted on a pivot bearing 38 and can be pivoted by a pivot drive device 40. To securely grip the cleaning roller 28, it has a gripping claw (not shown) which grips the cleaning roller 28, which is essentially dumbbell-shaped, and transfers it in the desired manner into the working position or into the cleaning position 30.

The suction and / or blow hose 20 for the drafting system 24 opens into a contour nozzle 42, which engages around the drafting system rollers 44 of the drafting system 24 and sucks them off in the embodiment shown. For this purpose, the contour nozzle 42 engages in the area of the drafting system 24 between two pendulum supports, not shown in FIG. 1, after the gripping arm 22 has reached there cleaning roller 28 initially located has removed.

The contour nozzle 42 and the suction and / or blow hose 20 are pivotably mounted on an operating arm 46, a pivot drive unit 48 making the pivot movement possible, and is also connected to the suction and / or blow unit 16.

1, both the operating arm 46 and the gripping arm 22 are shown in the pivoted-out position, it is understood that first the gripping arm 22 brings the cleaning rollers 28 into the cleaning position 30 and immediately thereafter the operating arm 46 laterally is moved past the gripper arm 22 into the pivoted-out position and sucks the drafting system 24.

As can also be seen from FIG. 1, the suction and or blowing arm 18 has a transverse guide 50, via which it can be brought into the area of the cops 52. The whirlpool area can accordingly be cleaned via the suction and / or blowing arm 18, for which purpose the suction and / or blowing arm 18 has a mouthpiece 54 which engages in the area 52 and is connected to the suction and / or blowing unit 16. The displacement from the working position, which is shown in FIG. 1, into the retracted rest position is accomplished by a drive device 56, which is connected to the transverse guide 50 and the suction and / or blowing arm 18.

The suction and / or blowing arm 18 also carries a whirl knife 58 in the area of the mouthpiece 54, the exact configuration of which can be seen in FIG. 2.

2 shows the configuration of the whirling knife for the high-speed ring spinning machine. The whirling knife 58 is mounted so that it can move essentially transversely, the front end position relative to the textile machine is determined by the abutment of the mouthpiece 54 on the textile machine, so that there is a comparatively accurate reference point. The whirling knife 58 has a cutting edge 60, an arcuate region 62 and a striking plate 64 and is guided on a guide profile 66. When moving from a release position into the cutting position, the guide profile 66 simultaneously causes the cutting edge 60 to move in the lateral direction, the direction of movement corresponding to the circumferential movement of a spindle 68 which is still rotating.

The striking plate 64 has a dual function. It limits the movement of the whirling knife 58 in the direction of the spindle 68, a spring element 70 formed by a rubber block forming a stop for the striking plate 64 in this direction, and on the other hand serves as a stopping surface for a striking bar 72, of which the whirling knife is in the actuating direction is encountered. Here, the impact rod 72 is acted upon by a compression spring 74 with spring force in the direction of the whirling knife 58.

To actuate the whirling knife, the striking rod 72 is released by a schematically illustrated triggering device, whereby the striking rod 72 is struck against the striking plate 64 by the force stored in the compression spring 74. The pulse generated in this way is transferred to the whirling knife 58, which carries out the cutting process. After the cutting has been triggered, both the striking rod 72 and the whirling knife 58 are brought into the tensioned state by a return device 76, the spring element 70 supporting the rebounding of the whirling knife 58.

3 shows the position of the whirling knife 58 in relation to the splinter 68 in four different states I to IV which follow one another in time. In position I, the whirling knife 58 is in a position in which the cutting edge 60 is still spaced from the spindle 68, the whirling knife 58 pointing to a point on the surface of the spindle 68 which is in the direction of rotation R of the spindle 68 before the point at which the whirling knife 58 touches the spindle 68.

At time II, the cutting edge 60 is already against the circumferential surface of the spindle 68 and is practically carried by it in the direction R into the position III, while the whirling knife 58 has moved away from the surface of the spindle 68 in the position IV, so that the cutting process is complete.

Accordingly, the cutting edge 60 of the whirling knife 58 describes approximately a semicircular movement symmetrical to the surface of the spindle 68.

A similar semicircular movement is also carried out by the whirling knife 58 in the direction parallel to the axis of the spindle 68. The same reference numerals here as in the other figures indicate the same parts and do not require any further explanation. The actual cutting process accordingly takes place between the positions II and III, the relative movement between the spindle 68 and the whirling knife 58 facilitating the cutting.

4 shows the configuration of the contour nozzle 42. This engages around the drafting rollers 44 and particularly engages in the column on the side of the drafting rollers 44, which are particularly at risk of dust. It extends over the entire width between pendulum supports 78 and is connected to a high-pressure fan, which permits intensive cleaning at these points with a comparatively low air output.

It is understood that the cleaning device according to the invention can also be combined to form a unit with a thread tying machine.

Claims (14)

1. Mobile cleaning and operating device for textile machines, in particular high speed ring spinning machines, with a suction and/or blower unit provided laterally to the textile machine, which operates upon working elements of the textile machine, characterised in that the device comprises at least one operating arm (46), which is mounted movably relative to the suction and/or blower unit and which can be transported into a working position in,which it can be activated in the immediate vicinity of working elements (24;52) of the textile machine (26), such as the drafting equipment of the textile machine, and simultaneously at least one further operating function can be performed, including lifting a cleaning roller in order to be able to clean it, operating a cleaning arm (18) for the wharve zone or operating a wharve knife.
2. Cleaning and operating device according to claim 1, characterised in that the cleaning rollers (28) can be conveyed into a cleaning position (30), which differs from the working position of the cleaning rollers, and can be freed there of impurities, in particular such as fibre fly, with the operating arm (46) in the working position sucking off in particular a drafting equipment (24) of the textile machine (26).
3. Cleaning and operating device according to claim 2, characterised in that in the cleaning position (30) the cleaning roller (28) rests against a brush roller, in particular a wire brush roller (32), by which it can be rotably driven and cleaned, and in the cleaning position (30) the brush roller (32) and the cleaning roller (28) can be struck by a cleaning airflow through the suction and/or blower unit (16).
4. Cleaning and operating device according to one of the preceding claims, characterised in that the further operating function comprises operating a wharve knife (58).
5. Cleaning and operating device according to one of the preceding claims, characterised in that at least one wharve knife (58) is led along a suction and/or blower arm (18) of the suction and/or blower unit (16) and the wharve knife (58) can be released abruptly in a cleaning position of the suction and/or blower arm (18) on cops (52) of the textile machine (26).
6. Cleaning and operating device according to one of the preceding claims, characterised in that a time controlling means is provided, with which the cleaning and operating device (10) can be positioned with a time controlling means in front of working elements of the textile machines (26) such as spindles (68) and where in a working condition of the cleaning and operating device (10) in front of the working elements of the textile machines (26), the further operating function can be initiated essentially simultaneously as sucking out and/or blowing off by the suction and/or blower unit (16).
7. Cleaning and operating device according to one of the preceding claims, characterised in that a time controlling means is provided, with which in order to reach a working condition of the cleaning and operating devices (10) in front of the textile machines (26), firstly cleaning rollers (28) of drafting equipment (24) can immediately be moved away by a grappling arm (22) and conveyed into a cleaning position (30) and after moving away the cleaning rollers (28) a suction and/or blower arm (operating arm 46) of the suction and/or operating unit (16), which in particular comprises a shaped nozzle (42), can be conveyed into a drafting roller engagement position, with which the drafting equipment (24) can be cleaned in a short cleaning time.
8. Cleaning and operating device according to one of the preceding claims, characterised in that in the drafting roller engagement position of a suction and/or blower arm (operating arm 46) of the suction and/or blower unit (16), the entire air output of the suction and/or blower unit (16) can be at least momentarily applied onto this arm (46), and subsequently hereto the suction and/or blower unit (16) can be switched onto a cleaning air flow for the cleaning roller (28) and/or the brush roller (32).
9. Cleaning and operating device according to one of the preceding claims, characterised in that in a working cycle condition of the cleaning and operating device (10) the air output of the suction and/or blower unit (16) onto a suction and/or blower arm (18) for wharve cleaning is switchable and in particular can be switched on on the suction and/or blower arm (18) shortly prior to the operation of a wharve knife (58).
10. Cleaning and operating device according to one of the preceding claims, characterised in that a pneumatically or electrically operable lever apparatus is provided, with which a grappling arm (22) and/or at least one suction and/or blower arm (18; 46) and/or flaps for switching the air output of the suction and/or blower unit (16) can be moved.
11. Cleaning and operating device according to one of the preceding claims, characterised in that shaped nozzles which are adapted to the surface of the drafting rollers for cleaning the drafting equipment engage in the drafting equipment.
12. Cleaning and operating device according to one of the preceding claims, characterised in that an operating means for a wharve knife (58) comprises a spring element (70) directed against the direction of operation, and the wharve knife (58) can be triggered to cut freely in the direction of operation and, immediately after the cutting action, rebounds from the spring element (70).
13. Process for cleaning and operating textile machines, in particular high speed ring spinning machines, with a transportable suction and/or blower unit provided laterally to the textile machine, which operates upon working elements of the textile machine, characterised in that at least one operating arm mounted on the device is transported into a rest position and a working position, that the operating arm in the working position engages in the working elements of the textile machine and sucks out or blows these off during engagement and at least one further operating function is performed, for lifting and cleaning a cleaning roller, for cleaning the wharve zone and/or for cutting away thread remnants in the wharve zone.
14. Process according to claim 13, characterised by accomplishing the function of at least one of the devices according to the features of claims 2 to 12.

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