EP0051222A1 - Device for introducing yarns and the like in a winding machine - Google Patents

Abstract

For safe insertion of threads (64a-d) into a winding device and simultaneous application of the threads to the bobbin tubes (5), the threads are moved by means of a suction gun (66) from the eyelets (65) (thread guide) provided in the apex of the traversing triangle to displaceable am thread guide (45) located at the free end of the bobbin mandrel. These thread guides then bring the threads in front of the corresponding catching means (6) of the bobbin tubes. The threads are then simultaneously caught by the catch means by jointly pivoting the thread guides against the bobbin tubes. In this way, the winding process for all coils begins at the same time.

Description

The invention relates to a method and a device for introducing threads and the like into a winding device with at least two traversing devices arranged axially next to one another and associated spool sleeves located on a spool. The method also includes the features that each thread coming from a thread guide above the winding device is taken over by a thread suction device and then placed on a thread guide above and on individual thread guides below the traversing device and guided outside the traversing area, and that the threads are guided by means of the lower thread guide are moved from a starting position at the outer end of the bobbin mandrel in front of the corresponding bobbin tubes such that each thread is brought into an area in front of a thread-catching means of the corresponding bobbin tubes and then, for simultaneous detection of all threads, these are simultaneously guided into the catching means and then wound up.

The device further includes the features that a thread catcher is assigned to each of the bobbin tubes, and that the winding device includes a thread guide bar above the traversing device and, for each thread, a thread guide which can be moved from the starting position at the outer end of the spool along the bobbin tubes and can be pivoted against the bobbin tubes, which is connected to a carrier element and the carrier elements are connected to one another by means of driver rods with stops, and that the innermost support element closest to the bearing side of the coil mandrel is driven.

The side-by-side and two-tier stacking of winding machines on the one hand and the multi-thread winding on the other hand as well as the need to hand over all threads safely and at the same time to all bobbin tubes in order to obtain uniform bobbin weights required a replacement of the manual single-thread transfer.

A method and a device according to the preamble of patent claims 1 and 2 are known from German Offenlegungsschrift 26 27 643.

In this device, the threads delivered by a thread guide or a delivery system are taken over by means of a manual thread suction device, then connected to a thread guide rod on the front side in front of the winding device by means of guide notches together as a bundle, but separately from one another. Subsequently, when the threads are simultaneously moved through the insertion gap of the winding device, these are moved from one another to the one corresponding to the distance corresponding to the arranged in a row of bobbin tubes by means of the thread eyelets movable along the supporting axis of the bobbin tubes.

Subsequently, a swivel bar carrying the thread eyelets is pivoted against or under the bobbin sleeves for the simultaneous insertion of the threads into the catch slots of the sleeves.

Simultaneously with the movement of the thread eyelets, the threads are lifted out of the guide notches of the thread guide rod so that they can move freely along the thread guide rod into the position corresponding to the thread tension.

The thread eyelets are moved by displaceable disks which carry the thread eyelets and are mounted on a rotatable threaded spindle. One of the washers is provided with an internal thread and is moved as a nut (hereinafter referred to as the nut washer) by the rotating threaded spindle. The remaining disks are slidably arranged on the spindle and connected to one another by driver rods.

The disadvantages of the device are that the possible inaccuracy of the disk or thread positions in front of the corresponding catch slot must be compensated for by an additional movement parallel to the axis of the bobbin mandrel in order to be sure that each thread is actually caught by the catch slot. The possible inaccuracy arises on the one hand from the imprecise positioning of the nut washer due to the speed of the motor-driven spindle and on the other hand from the possibility that the friction between the drive rod and the washer can be greater than that between the spindle and the washer.

This circumstance also creates the disadvantageous process step that the threads move beyond the positions of the catch slots in the axial direction and together again must be returned to be sure that the threads are caught by the catch slots.

Another disadvantage of the method is that the threads are first guided as a bundle (on the guide rod) on the front side in front of the winding device and only released again when the threads are introduced in front of the bobbin tubes (by means of thread, spindle and washers).

To solve these disadvantages is the object of the invention. The invention, as characterized in the claims, achieves the object in a winding device with at least two axially arranged traversing devices and associated bobbin sleeves located on a bobbin in such a way that the threads after the application to the in the starting position at the outer end the thread guide located in the bobbin take a stretched position between the thread guides above the winding device and the thread guides, and that they are grasped by a guide bar provided above the bobbin tube with guide notches while moving in front of the catching means in such a way that they end at the end of the movement the fishing gear comes in front of it.

• dass unterhalb der genannten ersten Führungsleiste eine zweite mit Führungskerben versehene, aus einer Ruheposition in eine Arbeitsposition bewegbare Führungsleiste vorgesehen ist, deren Anzahl Führungskerben der Anzahl der aufzuwindenden Fäden entspricht,
• dass ein Anschlag vorgesehen ist zur Positionierung des äussersten Trägerelementes,
• dass das innerste Trägerelement mittels eines PneumatikZylinders angetrieben und auf einer sämtliche Trägerelemente gleitbar und schwenkbar aufnehmenden Welle ebenfalls gleitbar angeordnet ist,
• dass in einer Endlage der Trägerelemente, bei der das äusserste Trägerelement am Anschlag und die anderen Trägerelemente an den Anschlägen der Mitnehmerstangen anliegen, der von den Fadenführern und der sich in der Arbeitsposition befindlichen zweiten Führungsleiste geführte Faden im wesentlichen senkrecht, in Blickrichtung senkrecht zur Spulendornachse gesehen, und genau vor dem entsprechenden Fangmittel geführt wird.

The device is characterized in that the thread guide bar can be moved (in a manner known per se) in such a way that the thread is guided outside the action area of the traversing device in a working position of the guide bar.

• that below the first guide bar mentioned, a second guide bar provided with guide notches and movable from a rest position into a working position the number of guide notches corresponding to the number of threads to be wound is provided,
• that a stop is provided for positioning the outermost support element,
• that the innermost support element is driven by means of a pneumatic cylinder and is also arranged to be slidable on a shaft which can slide and pivot all support elements,
• that in an end position of the carrier elements, in which the outermost carrier element lies against the stop and the other carrier elements abut against the stops of the driving rods, the thread guided by the thread guides and the second guide bar in the working position is seen essentially perpendicularly, in the direction of view perpendicular to the spool axis , and is carried out in front of the appropriate fishing gear.

Further advantageous embodiments of the invention are contained in claims 2 and 4 to 8.

The advantages achieved by the invention are essentially to be seen in the fact that the threads to be taken over by the catch slots of the bobbin tubes are brought in a simple manner precisely and relative to the axial direction of the bobbin tubes in a stationary manner in front of the catch slots.

• Fig. 1 eine Ansicht der erfindungsgemässen Spulvorrichtung, mit weggefahrenem Spulendorn und den Fadenführern am äusseren Ende des Spulendornes halbschematisch dargestellt,
• Fig. 2 eine Draufsicht der Spulvorrichtung von Fig. 1 mit der ersten und zweiten Fadenführungsleiste, halbschematisch dargestellt,
• Fig. 3 die Spulvorrichtung von Fig. 1 mit hochgefahrenem Spulendorn und den vor den.Spulenhülsen verteilten Fadenführern,
• Fig. 4 eine schematische Darstellung des Fadenlaufes beim Einbringen des Fadens in die Spulvorrichtung,
• Fig. 5 eine Draufsicht der ersten und zweiten Fadenführungsleiste, halbschematisch dargestellt,
• Fig. 6 eine halbschematische Darstellung der Verschiebevorrichtung für die Fadenführer,
• Fig.7-10 Details der Verschiebevorrichtung von Fig. 6 in Blickrichtung I, jeweils als Schnittzeichnung dargestellt,
• Fig. 11 ein Detail in der Ansicht in Pfeilrichtung I von Fig. 6,
• Fig. 12 ein Fadenführer der Spulvorrichtung von Fig. 6,
• Fig. 13 eine Variante des Fadenführers.

The invention is explained in more detail below on the basis of illustrated exemplary embodiments. It shows:

• 1 shows a view of the winding device according to the invention, with the bobbin mandrel moved away and the thread guides at the outer end of the bobbin mandrel, shown semi-schematically,
• 2 is a top view of the winding device of FIG. 1 with the first and second thread guide bar, shown semi-schematically,
• 3 the winding device of FIG. 1 with the bobbin mandrel raised and the thread guides distributed in front of the bobbin tubes,
• 4 shows a schematic representation of the thread path when the thread is introduced into the winding device,
• 5 is a plan view of the first and second thread guide bar, shown semi-schematically,
• 6 is a semi-schematic representation of the displacement device for the thread guide,
• 7-10 details of the displacement device of FIG. 6 in the viewing direction I, each shown as a sectional drawing,
• 11 is a detail in the view in the direction of arrow I of FIG. 6,
• 12 is a thread guide of the winding device of FIG. 6,
• Fig. 13 shows a variant of the thread guide.

In a machine housing 1 of a winding device 2, a friction roller 3 and a spool mandrel 4 are rotatably mounted (not shown). The bobbin mandrel 4 can be moved from a moved away position (rest position) (FIG. 1) to a raised position (working position) and back.

In the raised position of the bobbin mandrel lie on this clampable bobbin tubes 5 on the friction roller 3 to thereby obtain the desired speed and _D rehrich- processing. A catch slot 6 is provided on the bobbin tubes 5 for clamping a thread 64a-d caught therein.

In a support 7 fastened to the machine housing 1, a first thread guide bar 8 is slidably arranged (partially shown). The displacement directions 9a and 9b (FIG. 5) are given by the guide bolts 10 fastened in the support 7 and by the guide slots 68 provided in the guide bar 8 and interacting with the guide bolts 10. The displacement takes place in one direction 9a by means of a pneumatic piston 11, the cylinder 12 of which is attached to the support 7 (not shown), and in the other direction 9b by means of a tension spring 13. The tension spring 13 is between a support part 7a and the guide bar 8 clamped. The piston head 14 of the piston 11 bears against the end face 15 of the guide bar 8.

Below the guide bar 8, a second guide bar 16 is pivotally and displaceably mounted by means of a bearing block 17 fastened to the support part 7b and a shaft 22 which is rotatably and displaceably mounted therein and which is connected to the guide bar 8.

The combined pivoting and shifting movement, or swirl movement of the guide bar 16 is made possible by the swirl movement of a grooved roller 20 firmly connected to the shaft 22, in which a sliding block 24 connected to a support part 7c engages in a groove 23 of the grooved roller 20.

The swirl movement of the guide bar 16 from a working position (FIG. 4) in an initial position R (FIG. 4) is created by the tensioning force of a spring 21 located between the bearing block 17 and the grooved roller 20.

The swirl movement of the guide bar 16 in the reverse direction, i.e. from the rest position into the working position, is created by the force of a pneumatic piston 18, the cylinder 19 of which is attached to the support 7 (not shown).

Accordingly, the guide bar 16 makes a backward movement in the direction of the pneumatic cylinder 19 when changing from the working position to the rest position.

The piston head 26 rests on an end face 25 of the grooved roller 20 opposite the spring 21.

The thread guide bar 16 has four guide notches 27a, 27b, 27c and 27d at equal intervals A. These distances correspond to the mutual distances between the catch slots 6 of the sleeves 5 clamped on the mandrel 4.

Below the two guide strips are the generally known traversing devices 28 (FIG. 4, shown in FIG. 2) with the traversing thread guides 29 (FIG. 4), which in their traversing area in a manner known per se are the thread for winding formation the coil sleeve back and forth, arranged.

Below this traversing device 28, a thread guide displacement and swiveling device 30 (FIG. 6) is also provided. This device 30 comprises a shaft 31, which is inserted on the one hand in a bearing 32 embedded in the housing part la and in a support part 7d let bearing 33 is rotatably mounted.

In order to avoid an axial displacement of the shaft 31, the shaft 31 is provided with a collar 34 abutting the end face of the bearing 32 and the bearing 33 is provided with a bearing cover 35 abutting the end face of the shaft 31.

Carrier elements 36a to 36d are slidably provided on the shaft 31.

A driver 38 of a pneumatic piston 39, the cylinder 40 of which is firmly connected to the housing part 1 a, engages in a recess 37 of the carrier element 36 a. In addition, a driver rod 41 is fixed to the carrier element 36a and connected to the carrier element 36b in a friction-locked manner. The carrier element 36c likewise has a driver rod 42 which is fixedly connected to it and frictionally connected to the carrier element 36b. In addition, a driver rod 43 which is fixedly connected to the carrier element 36d is frictionally connected to the carrier element 36c. "Frictionally connected" is to be understood to mean sliding friction of great tolerance.

Each thread guide rod 44 is fastened to the corresponding carrier element 36a, 36b, 36c and 36d and carries a thread guide 45 (FIGS. 4, 6 and 12).

In the thread guide 45, a thread guide edge 46 with a second thread guide edge 46a of a finger 47 forms a guide notch 67 with an angle α of 90 °; while with a thread guide 48 (FIG. 13), which can be selected as a variant for the thread guide 45, the guide notch 67 has an angle β of less than 90 °, e.g. B. of 60 °. The use of this variant will be mentioned later.

The carrier elements 36a to 36d, the thread guide rods 44 and the thread guide 45 together form the thread guide elements 51a, 51b, 51c and 51d.

Furthermore, the shaft 31 has a longitudinal groove 49 for frictionally receiving the slot nuts 50 fastened in the corresponding carrier elements 36a, 36b, 36c and 36d. As a result, the thread guide elements 51a-d are pivoted when the shaft 31 is rotated.

Furthermore, a slide pin 52 (FIG. 6) is fastened in the support part 7d and serves for frictionally receiving a driver 53, which in turn engages in a groove 54 of the carrier element 36d with a friction fit. A stop 55 at the end of the sliding bolt 52 is used with the aid of the driver 53 to limit the axial movement of the carrier element 36d. Furthermore, a tension spring 56 is clamped between the support part 7d and the driver 53.

A crank mechanism (FIGS. 6 and 11) is used to rotate the shaft 31, consisting of a two-stage pneumatic cylinder 58 (not shown) pivotably arranged on a housing part 1b, a hinge pin 60 for the power transmission between a hinge part 61 fastened to the piston end and a articulated part 63 fastened to shaft end 62 of shaft 31.

The introduction of threads 64a, 64b, 64c and 64d into the winding device 2 is shown with reference to FIGS. 1 and 4 and takes place as follows:

1st phase:

From thread guides 65 or a delivery plant (not shown) Threads 64a-d (FIG. 1) are sucked in by means of a so-called suction gun 66 or a functionally equivalent suction device, for example an automatic suction device (not shown), to the first thread guide bar 8 brought into the working position (shown in solid lines in FIG. 4) and in the thread guide 45 or guide notches 67, respectively.

The thread guides 65 form the apex of the traversing triangle and are arranged substantially perpendicularly above the center of the traversing region of each bobbin tube 5, as is indicated in FIG. 1 on a tube with the region C.

Before the threads 64a to 64d were manually introduced into the corresponding thread guides 45, the thread guide elements 51a to 51d were pivoted from a starting position D into a thread take-up position E by means of the first stage of the pneumatic cylinder 58 (FIGS. 4 and 6).

In this first insertion phase, as shown in FIGS. 2 and 5 and in FIG. 4 with a solid line, the threads lie on the guide bar 8, but not yet on the second one, which has also already been brought into the working position (shown in FIG. 4) Thread guide bar 16. In addition, in this phase, the threads, as shown in FIG. 4 with a solid line, cannot be detected by the traversing thread guides 29 and are freely tensioned in the space between the thread guide bar 8 and the thread guides 45.

2nd phase:

From Fig. 1, 2 and 5 it can be seen that the thread 64a, when distributing the threads in front of the corresponding catch slots 6, the second thread guide bar 16 may only be transferred when it is in the position between the guide notches 27b and 27a (FIG. 5). For this reason, the second phase, namely the distribution of the threads 64a to 64d in front of the catch slots 6, is controlled as follows:

At the push of a button (not shown), the pneumatic cylinder 40 (FIG. 6) begins to move the piston 39 and thus the thread guide elements 51a-d from the initial position shown in FIG. 1 to the position shown in FIG. 3. Slightly delayed by relieving the load on the cylinder 12 (FIG. 5), the first thread guide bar 8 is moved back to the starting position B in the direction 9b by means of the tension spring 13, so that the threads 64a to 64d come to rest on the second guide bar 16. Each thread is stopped on its path still to be covered on this guide bar in the corresponding guide notch 27a to 27d, i.e. the thread 64a in the notch 27a, the thread 64b in the notch 27b, etc.

At the end of this second phase, the threads 64a-d, as shown in FIG. 3 and shown in FIG. 4 with a broken line, lie freely tensioned within the winding device between the notches 27a-d and the thread guides 45 next to the traversing area C and exactly in front of the corresponding ones Catch slots 6 and substantially parallel to them.

The exact position of the threads in front of the corresponding catch slots 6 is ensured by the exact position of the thread guides 45, their path through the stop 53 and through the stops 41a provided on the driving rods 41, 42 and 43 and resting on the carrier elements 36b and 36c, 42a repective 43a is precisely limited.

In addition, the spring 56 retains the carrier element 36d until the other three carrier elements have reached their spacing from one another given by the stops 41a, 42a or 43a. In this way, the thread 64d still resting on the bar 8 does not slide over the notch 27d even if e.g. the friction between the carrier element and the driving rod would be greater than between the carrier element and the shaft 31.

3rd phase:

In this phase, the shaft 31 is rotated by means of the second stage of the pneumatic cylinder 58 and thus the thread guide elements 51a-d are pivoted together into the position denoted by F. As a result, the threads 64a-d get into the corresponding catch slots 6 and are torn off by the suction gun 66, so that the windings begin to form.

After the position F is reached by the thread guide elements 51, the pneumatic cylinder 19 is relieved, so that the spring 21 moves the grooved roller 20 and thus the second thread guide strip 16 back into the starting position R. The guide bar 16 is pivoted away from the thread path by means of the swirl movement mentioned. During this twisting movement, the threads are guided through the notches 27a-d in such a way that some reserve turns are placed between the catch slot 6 and the traversing area C. At the end of the twisting movement, the threads 64 are stretched freely between the thread guides 65 and the sleeves 5, strive as a result of this thread tension in the traversing area C, and are gripped by the traversing thread guides 29. With the The normal winding process begins when the threads are gripped by the traversing thread guides 29.

A further embodiment of the invention consists in that a thread deflection 69 is arranged (indicated by dashed lines in FIGS. 1 and 3) in such a way that threads 64a-d, bundled therein and guided on the first thread guide strip 8, as shown in FIG Thread guides 45 are detected when swiveling from position D (FIG. 4) to position E.

This embodiment offers the advantage that the threads 64 do not have to be placed individually in the corresponding thread guides 45 by hand, which results in a further simplification of the method and a further time saving.

The described method and the device can also be used for other thread catching devices which, in addition to the sleeves, e.g. on the mandrel itself. Such devices replace the aforementioned catch slots 6.

Such a coil mandrel is e.g. known from US-PS 4 106 711 and GB-PS 1 562 548.

The third phase proceeds as follows with the bobbin mandrel with the conical thread guide surface 11 and the teeth 12 shown in the above-mentioned patents:

The thread guide elements 51a-d bring the corresponding thread 64a-d to the corresponding surface 11 when pivoted into the position F. Due to the existing thread tension generated by the suction gun, the thread slides on the surface 11 into the area of the teeth 12 and becomes like described, recorded and cut off in the patent specifications.

The position of a surface 11 along the coil mandrel essentially corresponds to the position of a catch slot 6.

Claims (8)

1. A method for introducing threads and the like into a winding device with at least two traversing devices arranged axially next to one another and associated spool sleeves located on a spool, each thread coming from a thread guide above the winding device, from a thread. Suction device taken over and then by means of this placed on a thread guide above and on individual thread guides below the traversing device and guided outside the traversing area, and that the threads are moved by means of the lower thread guides from an initial position at the outer end of the spool mandrel in front of the corresponding bobbin tube that each thread is brought into an area in front of a thread catching means of the corresponding bobbin tube and then, for the simultaneous detection of all threads, these are simultaneously guided into the catching means and then wound up, characterized in that the threads after being placed on the end of the thread Spool guide located thread guide take a position stretched between the thread guides (65) above the winding device and the thread guides (45), and that they move while moving in front of the catching means (6) by a guide bar (16) provided with guide notches above the bobbin tube s, are grasped by these guide notches in such a way that at the end of the movement they come to lie exactly in front of the catching means. 2. The method according to claim 1, characterized in that the threads (64a-d) for placing on which are in the starting position at the outer end of the spool Lichen thread guide (45) are guided bundled below the thread guide (45) such that the threads are picked up by the thread guide (45) when the thread guide (45) is pivoted from a starting position (D) to a thread take-up position (E). 3.Device for inserting threads and the like into a winding device with individual thread guides above the winding device, with at least two axially juxtaposed traversing devices and associated spool sleeves located on a spool, to each of which a thread catcher is assigned, and with a thread guide bar above the traversing device and per thread one thread guide, which is movable from an initial position at the outer end of the spool along the spool sleeves and can be pivoted against the spool sleeves, which is connected to a support element and the support elements are connected to one another by driver rods by means of stops that the innermost support element closest to the bearing side of the spool is driven , characterized in that the thread guide bar (8) is movable (in a manner known per se) such that the thread in a working position of the guide bar outside the action area of the changie device is guided, that a second guide bar (16), provided with guide notches and movable from a rest position into a working position, is provided below said first guide bar, the number of guide notches (27a-d) corresponding to the number of threads to be wound, that a stop (55) is provided for positioning the outermost support element (36d), that the innermost carrier element (36a) can be driven by means of a pneumatic cylinder (40) and is also slidably arranged on a shaft (31) that can slide and pivot all of the carrier elements, that in an end position of the carrier elements in which the outermost carrier element at the stop (55) and the other carrier elements bear against the stops (41a, 42a, 43a) of the driving rods (41, 42, 43), the thread guided by the thread guides (45) and by the second guide bar (16) in the working position being essentially vertical, seen in the direction of view perpendicular to the coil axis, and is guided exactly in front of the corresponding catch (6). 4. The device according to claim 3, characterized in that the second thread guide bar (16) is pivotable from a rest position into a working position about the axis of rotation of a shaft (22) receiving the guide bar and back. 5. The device according to claim 4, characterized in that the second thread guide strip is simultaneously displaceable in the direction of the axis of rotation of the shaft (22). 6. The device according to claim 3, characterized in that the outermost support element (36d) by means of a spring (56) can be moved with a delay compared to the other support elements (36a, 36b, 36c). 7. The device according to claim 3, characterized in that the thread guides (45) have a guide notch formed by two thread guide edges (46, 46a) of a maximum of 90 ° and directed towards the end of the spool Thread leading edge (46a) is located in a plane which is essentially perpendicular to the bobbin mandrel axis. 8. The device according to claim 3, characterized in that the thread guides (45) are arranged at their starting position at the outer end of the spool mandrel that the threads guided between the first guide bar (8) and a thread deflection (69) located below the thread guide when the thread guides are pivoted from the starting position D into the thread take-over position E, the thread guides (45) can be detected together.

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