EP0026471A1 - Bobbin changing device for textile machines - Google Patents

Abstract

The device for exchanging full bobbins for empty tubes on a textile machine (30) with a plurality of bobbins (60), the bobbin chucks of which protrude vertically from the machine front, consists of a thread operating carriage (26) and a bobbin removal carriage (31), which are separated from one another along the Machine front can be moved on rails (21). The two carriages (26 and 31) are operatively connected to one another and to each winding head (60) of the textile machine (30) by trailing lines (27, 28) or lines (29) via a microprocessor (22). The thread control carriage has devices for severing and suctioning off the threads which have been gelled during the bobbin changing process at each winding point (60). The bobbin take-off carriage (31) has devices for receiving the full bobbins of a winding unit (60) and for transferring the full bobbins to a bobbin receiving device (32, 33) independent of the carriages (26 and 31) - e.g. a gate - or to a coil transport device.

Description

The invention relates to a bobbin changing device for the exchange of full bobbins for empty tubes in textile machines with a plurality of winding units arranged along the machine front, in particular in spinning machines for man-made fibers with a large number of winding heads which are mounted in such a way that the bobbin chucks lying in a common horizontal plane are perpendicular from protrude from the front of the machine.

From DE-AS 21 23 689 (Bag. 805) a bobbin transport device is known which consists on the one hand of a carriage movable along the machine front with devices for removing the full bobbins and inserting empty tubes and on the other hand from a bobbin to accommodate the full bobbins.

The trend in the textile industry towards ever larger bobbin weights, ever higher thread speeds and ever shorter bobbin travel has meant that this concept of a bobbin transport device must be considered outdated because the bobbin weight also means the carriage for the removal of the full spools has become larger, which on the other hand has led to a reduction in its mobility.

The invention specified in claim 1 is based on the object of avoiding this disadvantage. According to the invention specified in claim 1, it is provided that the bobbin changing device is divided into two and consists of a thread operating carriage and a bobbin take-off carriage, both carriages being movable separately from one another along the machine front. The development of microprocessors has made it possible to operatively connect both carriages to one another and to the individual winding units.

The division of the bobbin changing device according to this invention into a thread operating carriage and a bobbin take-off carriage has the advantage that the thread operating function to be carried out when changing the bobbin is independent of the bobbin removing function.

The thread control has in particular the removal of the thread from its thread path that was maintained during the winding travel, the cutting of the running thread and the suctioning of the running thread during the bobbin change to a waste container and also the re-application of the running thread to the empty tube supplied to the winding unit.

The content of the bobbin removal function is in particular the removal of the full bobbin and the transfer of the full bobbin from the bobbin to a bobbin transport device. This coil transport device can in particular be a creel, as z. B. is also shown in DE-OS 21 23 689. Deviating from the design according to the mentioned DE-OS, however, the gate does not have to stand directly on the coil take-off carriage according to this invention. Since the thread operation by the function F _a denbedienungswagen regardless of the Bobbin take-off function and the bobbin take-off carriage, the bobbin take-off carriage can perform independent and independent operations, such as e.g. B. Transport the removed full bobbins to a bobbin transport device, which may be set up at the head of the machine.

With this assignment of the functions to be carried out when changing the bobbin to two function units operating separately from one another, it has proven to be advantageous to assign the function of inserting empty tubes, which is also to be carried out, to the thread operating carriage. For this reason, the reel service trolley can have a memory for the empty tubes and a device for transferring empty tubes from the memory to the respective chuck of the winding station. For this purpose, in an advantageous embodiment, the memory has a lateral outlet for one or more empty sleeves aligned with one another. The thread control trolley has a swivel arm which carries at its free end a clamping device for the aligned empty tubes and which can be swiveled with the clamping device between the outlet of the accumulator and the chuck axis of each winding unit. Furthermore, the thread operating carriage can have a device with which the sleeves clamped in the clamping device are displaced in the axial direction onto the chuck which is respectively aligned with the clamping device. For this purpose, the empty sleeves can be moved in the clamping device. But it is also possible to give the clamping device itself a corresponding movement.

In order to ensure the mobility of the individual wagons of the bobbin changing device, it is advantageous to assign the microprocessor, which controls the sequence of functions of the bobbin changing, to the textile machine and to connect the individual wagons of the bobbin changing device to one another and to the microprocessor by means of trailing lines, the microprocessor itself also each winding unit surgically connected is. However, it is also possible to arrange the microprocessor on one of the carriages.

It has already been mentioned that the bobbin transport device, which has the function of transporting full bobbins produced on the textile machine from the textile machine (e.g. for quality control, further processing, packaging, etc.) can be movable with the bobbin removal carriage, but not have to be. Rather, it is advantageously provided to park the bobbin transport device, which must also be constructed to be very stable to accommodate the very heavy bobbins, at one end of the textile machine until it is loaded. It is possible to program the operations of the bobbin take-off carriage in such a way that the bobbin take-off carriage transfers the bobbins to the gate in a predetermined sequence corresponding to the work stations of the textile machine, as is also proposed by the aforementioned DE-OS 21 23 689. This only makes quality control meaningful.

In a preferred embodiment of the invention, the bobbin removal carriage has a freely projecting horizontal mandrel - provided that the winding devices assigned to the textile machine also each have a winding spindle (chuck) projecting perpendicularly from the machine front in a predetermined horizontal plane. This mandrel can be moved in height on a central stand and can be pivoted about a pivot axis parallel to the central stand and can be extended perpendicular to its pivot axis or perpendicular to the central stand. This mobility ensures that the coil holding mandrel can be aligned with the respective chuck and with the respective holding mandrel of the coil transport device.

It has turned out to be disadvantageous in the automatic handling of full bobbins that thread ends inevitably hang from the full bobbins. To eliminate this disadvantage, it is further proposed according to the invention that the coil take-up carriage has a freely projecting horizontal mandrel has, which is surrounded by a cylindrical heating wire concentrically. This heating wire melts the thread ends to such an extent that they can no longer be a nuisance.

The heating wire can advantageously be arranged on the inner circumference of a cylinder jacket, which concentrically surrounds the coil receiving mandrel of the coil receiving carriage.

The transfer of the bobbins from the winding devices, which have projecting spindles (chucks) mounted in a cantilever manner, takes place by means of an ejection device assigned to each winding device, which preferably engages behind the bobbin tubes. Such a push-out device is e.g. B. in DE-PS 24 38 363 and the prior art cited therein (= Bag. 906 = US-PS 3,974,973) for a chuck of the type described in DE-PS 21 06 493 shown. However, it is also possible to use other types of chucks. B. according to DE-OS 27 19 853 (Bag. 1028) or DE-OS 28 54 715 (Bag. 1098). These chucks are relaxed pneumatically. To remove the full spools of these chucks, push-out devices that only perform an axial movement are sufficient (see e.g. GV-PS 870 402 = Bag. 463).

The full bobbins can be removed from the mandrel of the bobbin take-up carriage by an axially movable push-out device which is assigned to the bobbin take-up carriage.

It is often provided today when winding up freshly spun and / or drawn man-made fibers that two or more empty tubes are clamped on a bobbin (chuck) and then two or more bobbins are formed. For this reason, it is also provided for the bobbin take-up carriage that the holding mandrel attached to it has the length of several bobbins.

However, the operation of the bobbin take-off carriage can be done again are controlled so that only one coil is transferred from the take-up mandrel of the coil take-off carriage to a respective depositing point (e.g. plug-on mandrel) of the coil transport device. This is particularly advantageous if the coils are to be further processed immediately and the coil transport device also serves as a feed gate for the further processing process.

The separation of the thread control functions on the one hand and the bobbin take-off functions on the other hand also makes it possible to provide the bobbin take-off carriage with a weighing device for the full bobbins. For this purpose, the bobbin take-off carriage can preferably have two forks which are aligned horizontally with one another and are arranged in such a way that by lowering the mandrel of the bobbin take-off carriage, the sleeve ends of a bobbin can each be placed on the forks. The weighing device can be connected to the microprocessor and a printing unit for printing out the weight.

As already stated, the thread operating function comprises, as a first step, taking the thread out of its thread path that was maintained during the winding travel, separating the thread and then suctioning off the running thread during the bobbin change.

To carry out these functions, the thread operating carriage has thread overflow bodies which can be moved essentially horizontally and parallel to the plane of the traversing triangle of the thread to be removed, as well as deflecting bodies which can be moved parallel to the end of the path of movement of the thread overflow body, with the thread overflow body extending essentially up to the thread path of the thread to be removed and by extending the deflecting body beyond the thread path and then retracting the deflecting body, a thread loop is formed. Since the thread control carriage in the area of Thread loop - and preferably in the area of the apex of the thread loop - can have a thread cutter and a thread suction device and can be provided with a waste container for thread waste, the thread drawn to the thread loop can be cut off and then continuously suctioned off. The bobbin can now be changed by transferring the full bobbin or the full bobbins from the bobbin chuck to the mandrel of the bobbin take-off carriage. The bobbin removal carriage can then transfer the full bobbin to a bobbin transport device which is available somewhere, as described.

In the meantime, the function of the empty tube transfer is carried out by means of the thread control carriage. The mechanical equipment of the thread operating carriage required for this has already been described above.

It has been found that considerable thread tensions occur during the thread operating function described above, which can lead to thread breakage and thus to the interruption of the automatic bobbin changing process. This is remedied according to the invention in that the thread overflow bodies and / or deflection bodies are designed as rollers which are driven at a peripheral speed which essentially corresponds to the thread speed. Compressed air turbines can preferably be used for the drive. In order to ensure the mobility of the rollers, the rollers are each mounted on supports which are designed as tubes and are supplied with compressed air. As a result, hose connections in the area of the thread run, which could interfere with the thread run, are avoided. A suitable thread roll is z. As shown in U.S. Patent 3,746,233 (Bag. 817).

To form the thread loop, it is preferably provided that two thread overflow bodies, essentially perpendicular to one another, are arranged for each thread run and that two deflecting bodies, essentially perpendicular to one another, are also arranged for each thread run, the deflecting bodies between can move the two thread overflow bodies. On the movement arm or carrier on which the thread overflow bodies are located there is also a thread cutter and a thread suction device, specifically in an area over which the deflecting bodies pass in their retracted position facing away from the machine. As a result, the thread piece stretched between the deflecting bodies is brought into the thread cutter and sucked off after the thread cut (see, for example, DE-AS 19 52 231).

The invention is described below using an exemplary embodiment.

• Fig. 1 einen Fadenbedienungswagen (FBW),
• Fig. 2 einen Spulenabnahmewagen (SPAW) in mehreren Phasen a, b, c, d seiner Operation,
• Fig. 3 einen Spulkopf zum Aufwickeln von Chemiefasern mit Teilen des Fadenbedingungswagens und des Spulenabnahmewagens zur Darstellung der verschiedenen Phasen a, b, c, d, e des Spulenwechsles,
• Fig. 4 die schematische Draufsicht auf eine Spinnmaschine mit Spulenwechseleinrichtung,
• Fig. 5 einen Spulenabnahmewagen mit Wiegeeinrichtung,
• Fig. 6 Aufnahmedorn eines SPAW mit Heizdraht zum Abschmelzen von Fadenenden,
• Fig. 7 eine Prinzipskizze zur Stillstandsüberwachung des Spannfutters.

Show it:

• 1 is a thread control trolley (FBW),
• 2 a bobbin removal carriage (SPAW) in several phases a, b, c, d of its operation,
• 3 shows a winding head for winding up chemical fibers with parts of the thread condition carriage and the bobbin take-off carriage to illustrate the different phases a, b, c, d, e of the bobbin change,
• 4 shows the schematic top view of a spinning machine with a bobbin changing device,
• 5 a bobbin take-off carriage with a weighing device,
• 6 mandrel of a SPAW with heating wire for melting thread ends,
• Fig. 7 is a schematic diagram for monitoring the standstill of the chuck.

The thread control carriage 26 shown in FIG. 1 _' can be moved on rails 21 along the machine front. It has a vertical column 8, on which by means of a suitable drive (not shown here) (e.g. cylinder-piston unit, chain hoist, cable pull or the like) the housing 1 for devices for forming a thread loop of the running threads and for severing and suction the current Threads can be moved in the vertical direction. These devices for severing and suctioning the running threads consist of a first carrier 2 for the thread overflow body 3, 4 and a second carrier 5 for the thread deflecting body 6, 7. Both the carrier 2 and the carrier 5 can be substantially perpendicular to the direction of movement of the Thread control carriage 26 and are extended horizontally. It should be noted that the range of the carrier 5 is greater than that of the carrier 2. It is advantageous to design the thread overflow bodies 3, 4 and the thread deflecting bodies 6, 7 as driven rollers which rotate at approximately the thread speed. This prevents thread breakage. The rollers 3, 4 and 6, 7 are preferably driven by a pneumatic turbine. For this purpose, the beams 2 and 5 are hollow and connected to a compressed air supply (trailing line for the FBW). The turbine then sits on the same axis as the rollers.

As can be seen from FIG. 3, there is also a thread cutting and suction device 75 on the carrier 5, specifically between the thread deflecting bodies 6 and 7. It can be a combined tool which, on the one hand, contains an intake opening which runs along the between the deflection rollers 6 and 7 stretched thread run is slotted and has a shearing device for the thread on the thread outlet-side slot.

The thread control trolley 26 also contains a container 10 (FIG. 1) for the thread waste, which is drawn off by the suction device 75.

It should also be mentioned that the thread control carriage 26 consequently has a motor-driven fan for generating the necessary negative pressure with the required energy supply lines.

Furthermore, the carriage has a memory 11 (FIG. 1) for empty tubes 13. The memory has an opening 14 in which two aligned empty tubes 13 are exposed to the day. A clamping device 12 is provided which is suitable for moving into the opening 14 and for clamping one or more aligned sleeves between two gripping jaws. For this purpose, an arm 16 which can be pivoted about the pivot axis 17 is provided and is designed such that it disappears behind the column 8 in the clamped state and does not hinder the up and down movement of the housing 1. The pivoting movement is effected by the cylinder-piston unit 18. With 19 a chuck is shown, which belongs to a winding head located on a textile machine. Such a winding head is such. B. shown in Fig. 3.

The arm 16 can be pivoted and positioned such that the - one or more - empty sleeves 13 clamped in the clamping device 12 are aligned with the chuck 19. Furthermore, the swivel arm 16 can be moved along the axis 17 by a suitable drive device (not shown here) until the clamped sleeves 13 and the chuck 19 are spaced apart from one another at best. The sleeves can now be axially pushed out of the clamping device 12 and pushed onto the chuck 19 by the drive motor 15 and a suitable push-out device (for example a rotating chain).

Drive elements that are suitable for this purpose result, for. B. from DE-OS 21 23 689 (Bag. 805) and DE-OS 21 28 974 (Bag. 809).

2 shows a bobbin removal carriage in several phases of its operation. The bobbin removal carriage 31 can also be moved on the rails 21. It has a column 34 on a base plate, on which the carriage 35 can be moved. A boom 36 sits on the carriage 35, on which a cat 37 can be moved. The cat 37 has a pivot axis 38 parallel to the column 34, on which the sliding block 44 is seated. In the sliding block 44, the U-shaped support arm 39 with the holding mandrel 40 is movable in the plane of the U. The corresponding drive unit are not shown here in detail. However, it can be seen from the illustration that the holding mandrel 40 can be moved in height, can be moved in the direction of the arm 36, can be moved in the plane of the holding mandrel 40 and can also carry out a pivoting movement. A gate 32 with a plurality of arbors 33 is also visible in FIG. 2. Furthermore, the spools 43 and full spools 41 of two winding heads with push-out devices 42 which are still on the spool travel and are seated on chucks 19 are shown in FIG. 2a.

FIG. 3 shows a winding head 60 on which two coils 41 (see also FIGS. 2a to 2d) are wound on a chuck 19 (see also FIG. 1). The threads 61 and 62 run to the winding head via the thread guides 63 and 64. The threads are moved back and forth by traversing thread guides 66 and 67 and thereby describe a so-called "traversing triangle" between the thread guides 63 and 64 and the respective bobbin. The traversing device and the deflection roller 68 are seated in a carriage 65, which is adjustable in height. As a result, the drive roller can be brought into circumferential contact with the coils and raised again from the surface of the coils.

Winding devices of this type are e.g. B. in DE-OS 20 40 479 (Bag. 848), DE-OS 22 61 709 (Bag. 856), DE-OS 24 38 363 (Bag. 906), DE-OS 25 26 768 (Bag. 946 ). It is essential here that the winding heads are arranged along a spinning machine in such a way that the chucks 19 project from the machine front.

From Fig. 3d it also follows that the winding head 60 contains devices for threading. This is in particular the thread feed arm 69 with the thread catchers 70, 71 and the thread reserve thread guides 72, 73. In this respect reference is made to DE-OS 25 26 768.

FIG. 4 schematically illustrates the mutual assignment of the textile machine 30 - in particular the spinning machine - with the individual winding stations 60 of the microprocessor 22 assigned to the textile machine 30, the thread operating carriage 26, the bobbin removal carriage 31 and the gate 32.

It can be seen from this that the thread control carriage 26 and the bobbin take-off carriage 31 can be operated independently of one another and are connected to the microprocessor 22 by trailing lines 27 and 28, respectively. The microprocessor 22, on the other hand, is connected by lines 29 to the individual winding heads 60, so that the microprocessor takes over the central control of winding heads 60, thread operating carriage 26 and bobbin take-off carriage 31. The gate 32 can be positioned anywhere along the rail run 21. Due to the separation of thread operating functions on the one hand and bobbin removal functions on the other hand, the bobbin removal carriage 31 is free to transfer the bobbins from the individual bobbin heads 60 to the gate 32 without the thread operation being hindered thereby.

The sequence of the individual functions of the bobbin change is described with reference to FIG. 3 with reference to FIG. 1 and in particular FIG. 2.

In Fig. 3a it is shown that the movement 101 has moved the carrier 2 for the thread overflow bodies 3, 4 and the carrier 5 with the thread deflecting bodies 6, 7 to a level just below the thread guides 63, 64. The carrier 5 is now moved in the direction of the arrow 102. For this purpose, it has deflecting devices 25 on its end face (one deflecting device 25 is shown in FIG. 1, the other is omitted for the sake of clarity), which have the effect that the thread deflecting bodies 6, 7 initially do not come into contact with the threads 61, 62. The traversing triangle, which is stretched between the thread guides 63, 64 and the traversing thread guides 66, 67, is therefore not disturbed by the movement 102 of the deflecting thread guides 6, 7. Then carrier 2 follows with movement 103 or more precisely movement 103 a. The movement 103 a is carried out so that the front thread overflow body does not come into contact with the thread 61. The thread overflow bodies 3, 4 are moved almost vertically under the thread guides 63, 64.

As can be seen from FIG. 3b, the carrier 5 with the deflecting bodies 6, 7 is now moved back in motion 104, and so far until the thread stretched between the deflecting bodies 6, 7 gets into a slot of the suction device 75, where the thread is passed through a Clipping device is cut off (step 105). The thread running in through the thread guides 63, 64 and over the thread overflow body 3 is now constantly sucked off, while the other thread end which has been cut off is still wound on the bobbins 41. The carriage 65 is now started up in motion 106, so that the drive roller lifts off the coils 41. As can be seen from FIG. 2, the mandrel 40 of the bobbin removal carriage has now been positioned in alignment with the chuck. Now the U-shaped support arm 39 is moved in the sliding block 44 until the arbor almost comes into contact with the end face of the chuck 19 (movement 107). The push-out device 42 is then started with movement 108 - as can be seen in FIGS. 2a and 3b. For start-up, the holding mandrel 40 is preferably equipped on its front end face with a light source and a photo cell, while the end face of the chuck 19 has a series of light-reflecting foils or plates on its circumference. The rotation of the chuck 19 therefore generates a series of pulses which is evaluated in the microprocessor 22 in such a way that the microprocessor can detect the nominal speed of the chuck 19, the braking phase, the acceleration phase and the standstill of the chuck. The push-out device is put into operation by the signal of the microprocessor 22, which represents the standstill of the chuck 19. Since the push-out device engages behind the sleeves of the full spools the two full bobbins are pushed onto the mandrel 40 of the bobbin removal carriage 31. Now the U-shaped support arm 39 moves back into its starting position with movement 109 (FIG. 2a).

The other functions of the bobbin take-off carriage 31 are now no longer related to the individual winding head 60, so that these functions can be described later according to FIGS. 2b, 2c and 2d. First of all, the functional sequence with regard to thread operation is essential.

As can be seen from FIG. 3c, the carrier 2 is moved back to its starting position while the bobbins are being moved in motion 110 and is briefly pivoted out of the thread path. Then the housing 1 is lowered on the column 8 in motion 113 to such an extent that the thread suction device 75 now lies below the horizontal plane of the chuck 19. Shortly before or at the same time, the push-out device 15 (FIG. 1) is put into operation. As a result, the sleeves 13 are pushed out of the clamping device 12 of the thread operating carriage in motion 111 onto the chuck 19. A suitable construction of the chuck results from the German patent 21 06 493 (Bag. 708). This chuck has the advantage that a clamping effect is only exerted when a torque is applied to the sleeves. For this reason, the sleeves can be pushed on essentially axially without the need for additional operation of the chuck. However, it is also possible to use a chuck that is external - e.g. B. pneumatic - tensioned or relaxed. Such a chuck results, for. B. from DE-0S 27 19 853 (Bag. 1028) and from DE-OS 28 54 715 (Bag. 1098). When using such a chuck, the chuck is also to be actuated in the release direction with the drive 15 of the push-out device. This function can also be triggered by the microprocessor 22.

After the empty sleeves 13 have been pushed onto the chuck 19, the slide 65 is lowered in motion 112 and the chuck 19 with the empty sleeves 13 is rotated.

The feed arm 69 is then swiveled forward with the thread catchers 70, 71 (movement 114). The carrier 5 with the deflecting thread guides 6, 7 moves in front of the front of the winding head 60 and in doing so exercises the movements 115 or 116 and 117 in front of the respective thread catchers 70, 71. It causes the threads to be caught by the thread catchers 70, 71 and by the thread reserve guides 72, 73. Details of this sequence of movements inevitably result from the respective construction of the thread catcher, which are, for. B. can be a thread guide with a lateral thread insertion slot. Now the carrier 5 is moved back with movement 118 and the swivel arm 69 is pivoted back with movement 119. As a result, the thread is caught on the empty tubes and wound up. At the same time, the thread reserve thread guides 72, 73 are triggered (movement 120), as a result of which the thread reserve windings 74 form on the sleeves. The thread then runs into the respective bobbin center and is caught there by the traversing thread guides 66, 67 and then laid to form a cylindrical bobbin.

Now the thread control carriage 26 can move to another take-up point 60. He receives the command for this from the microprocessor 22, which receives the pulse for this via a time control or a diameter scan or a thread break monitoring.

The bobbin take-off carriage 31 can now carry out further functions. The U-shaped support arm 39 is about the pivot axis 38 rotated 180 ⁰ through movement 125 (Fig. 2b). The trolley 37 is then moved by movement 126 to the stand 34. Movement 127 raises boom 36 until mandrel 40 is aligned with a mandrel 33 of the gate.

If necessary, the U-shaped support arm 39 can still be moved in the sliding block 44 in the direction of the mandrel 33. Then the push-out device 45 (FIG. 2d), which is designed as an axially movable sleeve, which is placed over the holding mandrel 40, is actuated in the axial direction and the first coil is thereby transferred to the mandrel 33 by movement 128 (FIG. 2c). The boom 36 and slide 35 are now lowered by movement 129 to the level of the next mandrel and then, by advancing the push-out device 45 by movement 130, the second coil is also transferred to a separate plug-on mandrel 33 of the gate 32.

Now the slide 35 is moved back to the height of the winding heads by movement 131. The cat 37 moves back into a position aligned with a winding device (movement 132). The support arm 39 is then pivoted about the pivot axis 38 (133). The movement sequence according to FIG. 2a can then begin again with the feed movement 107 of the support arm 39.

The separation of the thread operating function and bobbin take-off functions and the division of these functions into two independently operating units brings the further advantage that one of these units can be assigned additional functions without the operational sequence of the other unit being thereby delayed.

Appropriate programming of the microprocessor and the inventive separation of thread operation and bobbin take-off makes it possible to place the bobbins on the gate in such a way that there is a clear association between the bobbin head on which the bobbin was produced and the storage space (mandrel 33) the gate is possible. This makes quality control much easier.

As indicated in FIG. 4, it is possible and advantageous to position the gate 32 at one point during the loading of the bobbins in the area of the textile machine 30 and the To let bobbin take-off carriage 31 back and forth between the gate and the individual winding units. However, it is also possible to temporarily couple the gate to the bobbin take-off carriage, so that there is no need for the bobbin take-off carriage to travel back and forth between the winding stations and the gate.

For the purpose of quality assurance, in a further exemplary embodiment according to FIG. 5, it is provided for the bobbin take-off carriage that the spring-loaded weighing plates 46, 47 with scanning devices 50, 51 and connecting lines 52, 53 to the microprocessor 22 are accommodated on the base plate of the bobbin take-off carriage. On the weighing plates 46 are aligned forks 48 and 49, which are set in their spacing so that they each hold the sleeve ends of a coil. By lowering movement 134 of the holding mandrel, the full coils located on the holding mandrel are stored and weighed in the fork pairs 48, 49. The weighing results are sent to the microprocessor 22. It is also possible to determine the sleeve weights beforehand and to determine the exact coil weight in the microprocessor. The weighing plates 46, 47 and forks 48, 49 are preferably arranged so that the lowering movement 134 can take place following the pivoting movement 125 (FIG. 2b). The weighing can easily be carried out between the take-up point and the gate - i.e. when the bobbin take-off carriage is moving. without wasting time - take place.

The weighing allows an immediate, possibly static recording of the spinning result with regard to the bobbin weight, titer, uniformity of the preparation order and the like. In particular, it can also be provided that each spool is labeled immediately, the labels with the data recorded by the microprocessor being printed out by a printer attached to the spool removal carriage. If the weighing result deviates from a specified target value or an average value determined statically by the microprocessor, it is possible to stop the winding units in order to avoid the production of waste if the quality tolerances are exceeded.

6 shows a device for removing thread ends that hang from the bobbin. Such thread ends lead to malfunctions if they are caught unexpectedly by moving machine parts or suction devices. The device consists of a cylinder 23 which concentrically surrounds the holding mandrel 40 on the bobbin removal carriage 31.

In the entrance of the cylinder on the inner circumference there is a heating wire 24 insulated from the cylinder, which melts the hanging thread ends when full bobbins are pushed onto the mandrel 40.

7 shows a schematic diagram of the arrangement of a sensor for monitoring the standstill of the chuck 78 (19). In the arbor 40, which is partially cut open in FIG. 7, a light source 76 and a photo cell 77 are installed in the front end face as sensors. The chuck 78 of each winding device, here referred to as full spool 41, has a series of reflecting elements 79 in its front end face. B. act on glued aluminum foils. The photocell 77 is connected to the microprocessor 22. The microprocessor therefore receives a series of pulses, the frequency of which depends on the speed of the chuck 78, when the end faces of the chuck 78 and the holding mandrel 40 are appropriately approached. This series of pulses is processed in particular in the microprocessor 22 so that when the chuck 78 is at a standstill an output signal to start the movement 108, i.e. for pushing the full spool 41 from the chuck 78 is given.

REFERENCE SIGN LISTING

• 1 housing for devices for cutting and suction of the running threads
• 2 supports for thread overflow body
• 
• 5 carriers for thread deflecting bodies
• 
• 8 pillar
• 9 sledges
• 10 waste bins
• 11 sleeve memory
• 12 clamping device
• 13 empty tubes
• 14 outlet of the sleeve store 11
• 15 drive motor of an ejection device for empty tubes
• 16 swivel arm
• 17 swivel axis
• 18 rotary actuator (cylinder-piston unit)
• 19 Chuck of a winding machine
• 20 wheels
• 21 rails
• 22 microprocessor
• 23 cylinders
• 24 heating wire
• 25 deflection edge
• 26 thread control trolleys FBW
• 
• 29 lines
• 30 textile machine
• 31 bobbin removal trolleys
• 32 gates
• 33 arbor
• 34 support column
• 35 carrier slides
• 36 support arm, extension arm
• 37 trolley
• 38 swivel axis
• 39 U-shaped support arm
• 40 arbor
• 41 full coils
• 42 ejecting device of the winding device
• 43 bobbins still in the winding cycle
• 44 sliding block
• 45 Push-out device for bobbin take-up carriages
• 
• 
• 
• 
• 60 winding head
• 
• 
• 65 height-adjustable sledges
• 66 traversing thread guide
• 67 traversing thread guide
• 68 deflection roller
• 69 thread feed device (thread feed arm)
• 
• 
• 74 thread reserve
• 75 devices for cutting and vacuuming the running thread
• 
• 78 chuck
• 79 reflective elements
• 101 Upward movement of housing 1 with devices for severing and suctioning off the thread or threads
• 102 Extension of the deflection body
• 
• 104 Retract the thread overflow body in pos. 105
• 105 rest position (thread cutting and suction position)
• 106 Lifting the carriage 65
• 107 Retraction of mandrel 40 in alignment with the chuck
• 108 actuation of the push-out device 42 for transferring the full spools 41 to the holding mandrel 40
• 109 Retracting the arbor 40
• 110 retraction of the carrier 2 with the thread overflow body 3, 4
• 111 Pushing on the empty sleeves 13 from the clamping device
• 12 by means of push-out device 15 on chuck 19 112 lowering of slide 65
• 113 Lowering the housing 1 with the suction device 75
• 114 Swinging the thread feed arm 69 forward with folding thread guides or thread catchers 70, 71
• 
• 117 Deflection movement of the deflection bodies on a normal plane to the winding axis
• ₁ 18 contact movement of the deflection bodies 6, 7 on the carrier 5
• 119 Retracting the feed arm 69 and forming the thread reserve 74
• ₁₂ 0 Movement of the thread reserve thread guide to form the thread reserve
• 125 Swiveling the arbor 40 about the swivel axis 38
• 126 The trolley moves towards column 34 (positioning in front of gate 32)
• 127 Approach the specified height
• 128 Transferring a full spool to a mandrel
• 129 Approaching the next mandrel
• 130 Push the next full spool onto the next mandrel
• 131 Lower the carriage 35 to the height of the chuck
• 132 Starting the next full coils to be removed 41
• 133 Swivel into alignment with the chuck axis for the full spools 41 and start with step 107

Claims (12)

1. bobbin changing device for the exchange of full bobbins (41) for empty tubes (13) in textile machines (30) with a large number of bobbins arranged along the machine front, in particular in spinning machines for synthetic fibers with a large number of winding heads (60), which are mounted in this way, that the bobbin chucks (19) lying in a common horizontal plane project vertically from the front of the machine, characterized in that the bobbin changing device is divided into two and consists of a thread operating carriage (26) (Fig. 1) and a bobbin removal carriage (31) (Fig. 2), which can be moved separately from one another along the machine front, in such a way that the thread operating carriage (26) (FBW) and the bobbin take-off carriage (31) (SPAW) are operatively connected to one another or to each winding unit by means of an entrained or fixed microprocessor (22) that the thread operating carriage (26 ) Has means (75) for severing and suctioning the running threads during the spool lenwechsel at each bobbin, and that the bobbin take-off carriage (31) has means (40) for receiving the full bobbins (41) of a bobbin and for transferring the full bobbins (41) to a bobbin holder or bobbin transport device (gate 32) which is independent of the bobbin changing device. 2. Bobbin changing device according to claim 1, characterized in that the thread control carriage (26) has storage devices (11) for empty tubes (13) and a device (12, 15, 16) for transferring the empty tubes (133 from the memory (11) into the Winding unit. 3. bobbin changing device according to claim 2, characterized in that the memory (11) has a lateral outlet (14) for one or more aligned sleeves (13), that the thread control carriage (26) has a swivel arm (16) which on its free end carries a clamping device (12) for the aligned empty tubes (13) and which can be pivoted with the clamping device (12) between the outlet (14) and the chuck axis (19) of each winding unit, and that the empty tubes perpendicular to the swivel plane of the swivel arm (16) and in alignment with the chuck axis of each winding unit are displaceable (displacement device 15). 4. Bobbin changing device according to one or more of the preceding claims, characterized in that the coil transport device is a gate (32) with a plurality of projecting mandrels (33) which are arranged in rows one above the other and side by side. 5. bobbin changing device according to one or more of the preceding claims, characterized in that the bobbin take-off carriage (31) has a freely projecting, horizontal holding mandrel (40), which is vertically movable on a central stand (34) and can be pivoted about a pivot axis (38) parallel to the central stand (34) and can be extended perpendicularly to its pivot axis (38) (movement 109). 6. bobbin changing device according to claim 5,
characterized,
that the horizontal mandrel (40) on its cantilevered end face a sensor - z. B. light source and photocell - which, with a corresponding signal transmitter - z. B. a reflective element - cooperates in the end face of the chuck (19) and signals the stoppage of the chuck (19) via the microprocessor (22). 7. bobbin changing device according to one or more of the preceding claims,
characterized,
that the SPAW (31) has a freely projecting horizontal mandrel (40) which is surrounded concentrically by an annular heating wire (24) for melting threads, which heating wire (24) is slightly larger in diameter than a full spool (41). 8. Bobbin changing device
according to one of claims 5 to 7,
characterized in that the SPAW (31) has a push-out device (45) which engages behind the spool sleeves (13) fitted on the holding mandrel (40) and can be moved parallel to the holding mandrel (40). 9. Bobbin changing device after one or more
of the preceding claims,
characterized in that the FBW (26) has thread overflow bodies (3, 4) which can be moved essentially horizontally and parallel to or in the plane of the traversing triangle of the thread (61, 62) to be removed, that parallel to the movement path of the - preferably two thread overflow bodies (3, 4) arranged essentially vertically one below the other. Deflection bodies (6, 7) can be moved beyond the ends of the path of movement of the thread overflow bodies (3, 4) - and preferably together between the two thread overflow bodies (3, 4), Preferably, each thread run has two essentially perpendicular deflecting bodies (6, 7) associated with it, that by extending the thread overflow body (3, 4) essentially into the thread run and by extending the deflecting body (6, 7) beyond the thread run and
by subsequently withdrawing the deflecting element
per (6, 7)
a thread loop is formed,
that the FBW (26) in the area of the thread loop has a thread cutting and thread suction device (75) and a waste container (10) for thread waste, and that preferably the thread overflow bodies (3, 4) can also be moved perpendicular to the traversing triangle of the threads to be removed, that when the thread overflow body (3, 4) is retracted into the thread run (61, 62) assigned to it, there is no thread contact with other threads. 10. bobbin changing device according to claim 9,
characterized,
that the thread overflow bodies (3, 4) and / or deflection bodies (6, 7) are designed as driven rollers, preferably driven by compressed air turbines. 11. bobbin changing device according to claim 10,
characterized,
that the thread overflow rollers (3, 4) and / or the deflection rollers (6, 7) sit on supports (2 and / or 5) which are designed as tubes and are supplied with compressed air and passages for the compressed air drive of the rollers (3, 4 and / or 6, 7) included. 12. Bobbin changing device after one or
several of claims 9 to 11,

characterized in that the carrier (5) for the deflecting bodies (6, 7) has deflecting edges (25) on its front face, by means of which the threads are rejected by the deflecting bodies (6, 7) when the thread run is passed over them.

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