DE2364284C2 - Dishwasher - Google Patents

Description

The invention relates to a winding machine, consisting of a traversing device, a control roller, which is in frictional contact with the circumference of the sleeve or coil to be wound, and 6c em rotatable and lockable bobbin turret, on which at least two sleeve chucks are rotatably mounted d, which alternately come into frictional contact with the contact ize and bringsind to the bobbin change or rest position, fts ! pul machines with reel turrets are z. B. from DL-PS 46 651 and DT-OS 21 10 367 known. Derge Spooling machines with bobbin turrets are used to change bobbins without loss; d. H. the full bobbin should be against an empty tube with the shortest possible changeover times and thus low or as little loss as possible be exchanged while changing the bobbin. This problem arises in particular in spinning, spinning-drawing and other machines in which synthetic threads operate at a high, constant speed incurred, so that with only short winding cycles (time to produce a finished, i.e. full Bobbin) a frequent bobbin change (replacing the finished bobbin with an empty tube) is necessary without that production can be interrupted in the meantime.

At least two chucks are rotatably mounted on the so-called reel turret. The bobbin turret is connected to a drive motor (turret drive) and can be rotated by this. on the other hand the reel turret can be locked in predetermined positions by a locking device. the Positions are predetermined so that in each case one of the chucks with the sleeve clamped thereon in the Area of action of the contact roller device. Suitable chucks are e.g. B. in DT-OS 21 06 493 described.

During the winding cycle, the contact roller stands first with the sleeve and then with the one on it forming coil in frictional contact. The contact roller serves in particular to keep the peripheral speed constant the coil growing in diameter. The peripheral speed is essentially the geometric sum of the constant thread speed and the mean traversing speed. The contact roller can be connected to a synchronous motor as a drive motor. In this case the contact roller serves as a drive roller for the circumferential drive of the coil and the chucks are in the Spool turret mounted freely rotatable. It is also possible for the reel turret to have axle drive motors for each chuck. In this case, the contact roller serves as a measuring roller for measuring the circumferential speed of the bobbin or the bobbin thickness and is equipped with a control device for adjusting the bobbin speed connected to the growing coil diameter (see. DT-PS 11 15 815). There are also winding machines known, which have an axle drive motor for the coil, but which still have one Have constant speed driven drive roller, whose drive torque during the winding process is kept almost constant (DT-PS 12 67 780).

There is a relative movement between the chuck in the operating position and the contact roller perpendicular to the axes possible, be it by moving the contact roller, by moving the Spool turret, or by swiveling the spool turret away.

A lossless bobbin change in such winding machines is only possible if they are on the winding cycle The tube to be brought (empty tube) is already set to an essentially corresponding thread speed Circumferential speed is brought before the thread is applied to the empty tube. To do this, according to the DT-OS 21 10 367 provided an auxiliary drive which acts on the chuck with the empty tube while this chuck is still in the rest position. According to DL-PS 46 651, the empty tube by turning the bobbin turret already brought into frictional contact with the drive roller while the still on

Almost full bobbin on the ! the friction roller is in contact. Only when the thread is placed on the empty tube is it separated from the full bobbin and the bobbin turret rotated so far that the empty tube is in the operating position and the full one Coil are in the rest position, where the latter is braked, removed and replaced with a new empty tube is exchanged. This is a very complex and effective way of changing the bobbin without losses given. However, this known device has the disadvantage that the contact roller has a very Must have a large diameter, if not the possibility of lossless bobbin change of the winding machine should be very limited. Because in the event of a thread break the with a high and constant thread speed When the thread starts up, the bobbin must be changed again, even if the thread is on the winding cycle Tube only wound with only a few layers of thread or only the thread reserve or the waste winding is. In this case, the contact roller can only be almost empty in frictional contact with the failed one Tube and the new tube to be sent on the bobbin travel are brought when the contact roller has a sufficient diameter. The diameter of the drive roller must be so large that too at the same time two empty sleeves no unbearable contact pressure due to the Starting the empty tube to be applied torque occur. This large diameter of the contact roller however, has significant disadvantages because he swings the bobbin turret with a full Coil is very in the way and requires a large construction of the winding machine.

The object of this invention is to avoid these disadvantages and, in particular, to use a winder To create a reel turret in which there is no geometric dependence between the diameter of the drive roller on the one hand and the distance between the core chucks to be operated one after the other and the winding diameter on the other hand there is.

For this purpose, a winding machine of the type described above is proposed, which is characterized by an additional contact roller, which is equipped as a drive roller independently of the first contact roller and in the thread direction in front of the first contact roller and with reference to the bobbin turret and to the first Contact roller is arranged in such a way that at the same time a chuck with fully wound Sleeve in frictional contact with the first contact roller and the subsequent chuck with the clamped on it Empty tube in frictional contact with the second Contact roller can be brought.

The advantage of this winding machine is that both contact rollers have a very small diameter and can be arranged relative to one another in such a way that a very small construction is possible. Another advantage for the operation of such a winding machine, especially in chemical fiber spinning plants, consists in the fact that when changing the bobbin for the full and empty bobbins different circumferential (u, speed can be adjusted as required by different speeds or target speeds of the contact rollers are. As a result, the thread tension of the thread on the empty tube can be independent of the thread tension of the thread on the full bobbin and thus also the particularly important hardness of the first winding layers as desired can be set. During the winding journey, i. H. when the S column turret is in its operating position and as a result, the tube or bobbin sent on the winding cycle is no longer in frictional engagement with the second but rather is in frictional engagement with the first contact roller, the independently adjustable speed of the Contact roller can be used advantageously to promote or slow down the thread touching them and thereby influencing the thread tension of the thread running onto the bobbin. Especially with automation When changing the bobbin, it is advantageous that even with only a small diameter of the contact rollers the distance between the chuck axes can be chosen so large that there is no risk of mutual There is contact between the bobbin on the winding cycle and the finished bobbin. Through this this prevents the operator from getting under time pressure when removing the full bobbin

In a further embodiment of the invention, one end of the chuck is used for the second contact roller or the empty tube to be clamped onto it, cooperating ring with an enlarged diameter suggested. This ring allows the thread between the second contact roller without damage and the empty tube attached to it and while maintaining the oscillating backward and moving the not yet fully full bobbin.

Instead, it is still possible to equip a chuck end with such a ring that with the second contact roller cooperates. For the same purpose, the second alternative is proposed To provide contact roller with per se known endless thread guide grooves. This once guarantees that the thread is unhindered even when the empty tube is in contact with the second contact roller not yet full bobbin and can be moved back and forth. On the other hand, this solution offers the advantage that the traversing is as close as possible to the bobbin surface and thus an exact bobbin structure is guaranteed. This design also allows the second contact roller not only to be independent from the first contact roller to a higher or lower but also to a periodically changing one Set the speed as soon as the bobbin turret is turned into its operating position, and thereby the tube or bobbin sent on the winding cycle the frictional engagement with the second contact roller has lost and is in frictional engagement with the first contact roller. It therefore exists in this embodiment of the invention during the winding cycle the possibility of leading or trailing the second Contact roller to influence the thread tension and also the laying angle of the thread on the bobbin, by periodically changing the target speed of the contact roller, the mirror formation during of the prone part of the winding cycle to avoid carrying out the bobbin change without loss, while the Traversing device, d. H. the second contact roller, designed as a grooved drum, for a short time to synchronize Use sizing the circumferential speed of the empty tube zi, and also during the thread application fü the empty tube and the full bobbin to set different circumferential speeds.

The invention also provides the possibility of the set circumferential speeds of the first and de second contact roller to be synchronized on request! or to bring it to a certain ratio. Here once a corresponding setting of the setpoints can be used, e.g. B. by switching the frequency vo

Synchronous motors. A transmission with a certain transmission ratio between the two contact rollers which works via a clutch. An overrunning clutch is preferred used by reducing the target speed or drive power of the faster contact roller can be put into operation. The advantage is that in this version all yarn tension jumps in the Period of changeover of the bobbin, which has now been sent on the winding cycle, from one contact roller to the other be avoided.

Details of the invention and its advantages are given below with reference to the drawing of a preferred one Embodiment described in more detail. It shows

F i g. 1 the perspective view of a spool machine,

F i g. 2 the side view of the winding machine,

F i g. 3a the schematic representation of individual to operating phases of the winding machine,

F i g. 4a, 4b and F i g. 5a, 5b embodiments of the second contact roller,

F i g. 6 the thread guide bracket as a detail,

F i g. 7 the cable cylinder with the incorporated thread guide track for moving the auxiliary thread guide as a partial longitudinal section,

F i g. 8 the thread guide to form the thread reserve, in longitudinal section,

F i g. 9 the view of the winding machine (partially open) with drive devices.

The winding machine according to FIG. 1 consists of a machine frame, not shown, connected to it Machine housing 1 and a slide 2, which can be moved in guides 3 in the vertical direction. Of the Carriage 2 carries the traversing thread guide 4, which is guided in the straight guide 5 and through the in the F i g. 2 and 3 illustrated reversing thread roller 6 is driven, as well as a first contact roller 7 and a second contact roller 8. As in FIG. 9 shows the first contact roller 7 by the synchronous motor 9 and the second Contact roller 8 driven by asynchronous motor 10. The reverse thread roller 6 and the second contact roller 8 are connected to one another by a toothed belt U.

The winding machine has a bobbin turret 12. Two chucks 13 and 14 are rotatably mounted on it The bobbin turret is by the in F i g. 3 turret drive motor 15 shown schematically further rotated by bevel gears 16, 17 There is also a locking device 18 provided by that of the turret in two predefined operating modes 19 'and 19 "can be determined

The chucks 13 and 14 are on chucks », rush arranged and intended for clamping of winding carriers such as suitable empty tubes

In a preferred embodiment of the winding machine, the second contact roller 8 is provided with a thread guide groove 20 provided. Since the reverse thread shaft 6 and the second contact roller 8 with synchronous peripheral speed are driven, the traversing thread guide 4 is used to guide the thread into the Thread guide groove 20, the spiral thread roller 6 is matched to the second contact roller 8 that the traversing thread guide 4 guides the thread securely into the thread guide groove with sufficient lead Thread guide groove 20 takes over the actual laying of the thread on the bobbin. Others, regarding the Traversing properties less favorable, but otherwise equivalent embodiments of the second contact roller < result from FIGS. 4 and 5. In Fi g. 4a and FIG. 4b, the second contact roller 8 has the rings 2! that run on the empty shell 22 of the chuck 13 and 14, respectively. As soon as a few layers of thread are on the empty tube

22 are wound, the filling bobbin 23 comes into contact with the contact roller 8, so that the rings 21 out of function. In Fig. 5, the chuck has a ring 24 which is initially in contact with the Contact roller 8 stands until a few layers of thread have been wound onto the empty tube and the bobbin 23 is filled comes into contact with the contact roller. The ring 24 then becomes inoperative. In all cases, the according to this invention specified embodiment of the second contact roller for the purpose that the thread can still be trimmed properly until the empty tube, which when changing the thread on the second Contact roller 8 is applied (as will be described later) to the peripheral speed of the second contact roller is accelerated and the thread can then be deflected from the full bobbin onto the empty case can.

Before going into further details of the winding machine, its operating phases should first be discussed Hand of fig. 2 and 3 will be described.

In Fig. 2, a full spool 23 rests against the first contact roller 7 and an empty tube 30J rests against the second contact roller 8. In this operating phase, the chuck 13 with the empty tube 302 is accelerated to the circumferential speed of the second contact roller 8. At this point in time, the full bobbin 23 is still being charged with the resulting thread. In this operating phase, the thread guide grooves 20 (Fig. 1) or the formation of the contact roller with beads (Fig. 4) or the formation of the chuck with a bead (Fig.5) ensure that the thread between the empty tube and the second contact roller can be moved freely back and forth and thereby the further build-up of the bobbin of the bobbin 23 is not hindered.

As soon as the empty tube 30J has reached the circumferential speed of the second contact roller 8, the thread turning devices to be described later are put into operation and the thread is placed on the empty tube 302 and thereby from the full bobbin

23 separated As shown in Fig.3a now fills the sleeve 30J with the bobbin 22, whereby the bobbin turret 12 rotates a little in the direction of arrow 25. In this operating phase, the turret drive 15 is not in operation, so that the turret is under the contact forces of the contact rollers 7, 8 and the growing bobbin diameter of the bobbins 23 and then 22 (Fig. 3b) is freely rotatable

After the operating phase shown in FIG. 2 and 3a and which lasts only a short time, the turret drive motor is put into operation and the bobbin turret is rotated further. As shown in FIG Brief and simultaneous contact with the two contact rollers 7, 8 advised. The bobbin turret is rotated further until it is in the position shown in FIG. 3c, the operating position tV shown is determined by the locking device 18. The bobbin 22 on the winding cycle is now in contact with the first contact roller 7, while the full bobbin 23 can be withdrawn and replaced by a new empty tube.

As shown in FIGS. 2. 3a, 3b, 3c can be seen, leads the

Carriage 2 during the rotary movement of the bobbin turret 12 and a movement in the vertical direction during the winding process. There are to move up and down the pneumatic support devices 26 are provided, which are acted upon by compressed air in this way, that they fully or partially compensate for the key weight and, if necessary, an additional one Generate contact pressure between the contact rollers and the adjacent sleeves or coils.

The following description of the thread contact devices relates in particular to FIG. 1 and 2. The thread turning device is controlled by a timing relay 27 which, when the bobbin turret 12 is pivoted into the position shown in FIG. 2 layer is put into operation, switched on. The timing relay 27 is set so that by its switching pulse, the empty tube 30.2 has reached the required peripheral speed of the second contact roller 8, as experience has shown. Due to the switching pulse of the time relay and voltage / pressure converter 28 and pneumatic cylinder 41, the thread guide bracket 40.1 pivots from the starting position (solid lines) into the traversing plane between the reciprocating traversing thread guide 4 and the second contact roller 7 and beyond into the end position, approximately in accordance with the dashed line of the thread guide bracket, which is designated in this position with 40.2. He lifts the thread 34 out of the charging thread guide 4. The pivoting movement is achieved by acting on the pneumatic cylinder 41, the piston rod 42 of which is fastened to the thread guide bracket by means of the joint 43. The stroke of the piston rod 42 defines the end position 40.2 and the starting position 40.1 of the thread guide bracket. The stroke is dimensioned so that the thread guide bow! is arranged sunk in its starting position behind the Changicrcbene in the carriage 2 of the winding head. As soon as the thread 34 is lifted out of the traversing thread guide 4. it is automatically pulled to the traversing stroke center due to the prevailing thread tension and slides due to the inclined position of the thread guide bracket with respect to the second contact roller 8 on an inclined plane to the cranked part 44.2 of the thread guide bracket at the traversing stroke end. The inclined plane is spanned between the part 45.2 of the thread guide bracket 40.2, which is inclined relative to the winding axis, and the thread guide 46 which is stationary on the machine frame. During the sliding movement along the thread guide bracket 40.2 to the cranked part 44.2 , the thread is still supported by the thread guide groove 20 of the second contact roller 8.

An auxiliary thread guide 47.1 cooperates with the swiveled out thread guide bracket 40.2 , which takes over the incoming thread in its starting position shown in solid lines as soon as the thread guide bracket is brought back into its starting position 40.1 by pressurizing the cylinder 41 accordingly. The corresponding thread course is denoted by 34.1 in the drawing and shown in phantom. The auxiliary thread guide 47.1 is on the one shown in FIG. 1 attached piston 48, which is guided in a cable cylinder 49. It moves along a guideway 50 which is incorporated into the walls of the cable cylinder. The piston 48 is connected to cables 51 and 52, which are guided over pulleys 53 and 54 and attached to the piston 55 of the double-acting pneumatic cylinder 56. As a result of the controlled application of compressed air to the pneumatic cylinder 56 via the line 57.1 , the auxiliary thread guide 47.1 is now displaced along the guide track 50. Here he pulls the thread

34.1 a, which protrudes into the thread path, such as Z-shaped bent wire clip 58, and forms in the yarn strand, a loop of the guide path 50 is opened during the further movement of the auxiliary thread guide 47.1 longitudinally. The thread section fed from the auxiliary thread guide 47.1 to the almost finished bobbin 23 slides down the inclined leg of the wire bracket 58 until the position of the thread 34.3 shown in dashed lines is reached, while the thread section 34.2 running from the stationary thread guide 46 to the auxiliary thread guide 47.2 is caused by the intended rotary movement of the auxiliary thread guide - due to the course of the guide track 50 in the cable cylinder 49 - is brought into contact with the thread catching means 59 on the empty tube 30.2. The tapering thread

34.2 is hereby forcibly caught on the empty tube, and the thread section between the thread catching device 59 and the auxiliary thread guide 47.2 (dashed end position) is in the cutting area of the Cutting knife 60 brought. The cutting blades 60 are prismatic distributed around the circumference of each chuck shaft Body whose edges parallel to the axis of the chuck are designed as cutting edges 61. The now the thread catching means 59 clamped and still wound by the finished bobbin 23 receives thread this increases the thread tension and is cut by the cutting knife 60. The auxiliary thread guide is then moved back to its starting position 47.1 by applying compressed air to line 57.2, where it remains until the next reel change.

in the meantime, the thread 34.2 caught on the empty tube 30.2 and running onto this endeavors to aul To move back to the center of the traversing stroke due to the prevailing thread tension. But he will get through this the stationary thread guide 62 prevented, the arr slide 2 of the winding head is mounted, and the company the running level between the stationary thread guide 4i and the empty tube 30.2 penetrates. The thread guide gan 62 is shown in FIG. 8 shown in more detail. On this Fa denleitorgan a pin 63 is provided, which under eini adjustable spring force is deflected laterally. For the adjustment of the spring 64 is used in the tubular « Fadenleitorgan 62 inserted Allen screw 65. During overcoming the resistance through the since borrowed deflected pin is delayed movement of the thread to the traversing stroke center, the thread reserve ve laid. Then the thread is immediately pulled to the Chan gierhubmitte, where it is of the traversing thread Leader 4 is detected to now be properly moved to a cheese. The company described The guide element 62 with the pretensioned pin 63 to form the thread reserve on the empty tube is in front preferably used for winding technical threads, in particular carpet yarn, as this is a higher company the forces to move the pin 63 - against de

(Ό spring force - can be applied than is possible with textile threads of a lower titer.

F i g. 9 are used to describe the drive of the inventive winding machine. The first Kontaktwa ze 7 is driven by the synchronous motor 9 and toothed belt 72 at a constant speed. The two contact roller 8 is driven by motor 10, which can be designed as a synchronous motor or as an asynchronous motor, and also by toothed belt 71 . D.

Reversing thread roller 6 and the traversing thread guide 4, which are shown in FIG. 2 are shown in FIG. 9 for the better Overview omitted. In this connection it should be noted that when equipping the second Contact roller 8 with thread guide grooves no absolute necessary wedge of Vorchangierung through the There is a spiral thread roller and traversing thread guide.

On the shaft of the second contact roller 8 i..t a clutch 73 is attached, the outer ring 74 by belt 76 is connected to the drive shaft of the first contact roller 7. In Fig. 9 shows the operating phase in which the winding turret 12 is swiveled just enough that the bobbin 22, which has been newly sent to the winding cycle just rests against the first and the second contact roller at the same time. Especially right now it has been found to be useful that the first and the second contact roller with the same peripheral speed operate. It should be noted here that - as stated - the second contact roller 8 can be operated at a higher or lower peripheral speed than the first contact roller 7. In this way, the thread tension can be favorably influenced. The second contact roller advantageously has 8 a certain lead over the first contact roller 7. However, it is also the opposite Operational case conceivable. To produce the same peripheral speed, the speed of the drive motor 10 is reduced and the clutch 73 is switched on. In a preferred embodiment, the clutch 73 is an overrunning clutch, which is on reduction the drive speed of the motor 10 automatically comes into operation and the second contact roller 8 over the belt 76 issued a minimum speed matched to the speed of the first contact roller 7. It common types of overrunning clutches can be used.

It should be noted that the direction of action of the overrunning clutch depends on which of the two Contact rollers are operated with lead or lag. In any case, the contact roller 7 should with connected to the synchronous motor and at a constant speed even during the change phase operate.

The bobbin turret 12 is after the end of the thread change (see Fig. 2 and the associated description) activated by switch 93. Simultaneously with switch 93 and magnetic switch 94, the speed of the motor 10 is reduced or the motor 10 is completely switched off and by a magnetic switch 95 switched on the switchable clutch 73. The second contact roller is now driven 8 by synchronous motor 9, so that the peripheral speeds of the two contact rollers 7,8 match. If the clutch 73 is not designed as a switchable clutch but as an overrunning clutch Magnetic switch 95 is omitted. The entrainment of the contact roller 8 when the motor 10 is switched off by the motor < takes place automatically in this case.

F i g. 2 shows another device that the Fortdre hen the bobbin turret 12 prevented under the weight of the full bobbin. This facility is in the Zu in connection with the present invention is required in particular because the force caused by the force of gravity the full coil resulting force effect of the empty sleeve essentially with the direction of movement de; Slide 2 collapses. In the present case, sluggish the .Spulenrevolver 12 has a cam which is designed as a roller 81 rotatable about the pivot point 80. the Roller 81 acts in the rotary position of the bobbin turret 12, in which the empty tube 30.2 on the second contact roller 8 and the full bobbin 23 rest against the first contact roller 7 at the same time, with a curve 83 together, which is attached to a pivot lever 82 pivotable about pivot point 84. The pivot lever 82 is connected to an energy storage device 86 in the joint 85. The energy store 86 can consist of a spring exist. In the present case, the energy store 86 consists of a piston rod 87, piston 88 and cylinder

89. Different, adjustable pressures can be applied to the cylinder-piston unit. Of the Cylinder 89 can be pivoted about pivot point 90. The pressurized air is applied by force of the arrow 91 in such a way that the cam 83 is pressed against the roller 81. When the bobbin turret is in If the direction of the arrow 92 continues to rotate, the pivot lever 82 exercises an increasing direction via curve 83 and roller 81 Braking effect on the bobbin turret. This causes the growing weight of the almost full Coil fully or partially compensated. The course of the curve 83 determines the course of the compensation of the Reel weight. The force exerted by the energy store 86 (see arrow 91) or, in the present case, that in FIG Cylinder piston unit 88, 89 existing pressure determines the level of compensation for the coil weight.

It can be seen that the arrangement of cam 81 and cam 83 are also reversed in that sense can that the pivot lever 82 including energy storage 86 on the reel turret 12 and the Cam 81 is located on the machine frame. It can also be seen that the curve is not necessary 83 has to perform the relative movement to the cam 81, but just as well the relative movement through the Cam 81 can be performed. Finally, it can also be seen that the relative movement is not one Pivoting movement must be but can also run in a straight line.

In addition 6 sheets of drawings

Claims (6)

Patent claims: ! Spooling machine consisting of a traversing device, a contact roller, which is in frictional contact with the circumference of the tube or bobbin to be wound, as well as a rotatable bobbin turret on which at least two tube chucks are rotatably mounted, which alternate in frictional contact with the contact roller and in bobbin changing resp. Can be brought to rest position, characterized by a second contact roller (8) connected to independent drive devices (10, 11) , which in the direction of rotation (92) of the reel turret (12) in front of the first contact roller (7) and with reference to the reel turret (12) and to the first contact roller (7) is arranged in such a way that at the same time a chuck (14) with a fully wound sleeve (30.1) clamped thereon is in frictional contact with the first contact roller (7) and the subsequent chuck (13) with the empty tube ( 302) can be brought into frictional contact with the second contact roller (8). 2. Winding machine according to claim 1, characterized in that the second contact roller (8) one or more rings (21) with enlarged diameter in the region of the ends of the on the Has chuck (13, 14) clamped empty sleeve (30.2). 3. Winding machine according to claim 1, characterized in that each chuck (13, 14) in its Has end regions of contact rings (24) with an enlarged diameter, and that the second contact roller (8) extends axially into the area of these contact rings (24). 4. Winding machine according to claim 1, characterized in that the second contact roller (8) as known grooved roller with endless thread guide grooves (20) is designed. 5. Winding machine according to one or more of the preceding claims, characterized in that that the contact rollers (7, 8) by a mechanical gear (76) and a switchable Coupling (73) are interconnected. 6. Winding machine according to one or more of the preceding claims, characterized in that that the contact rollers (7, 8) by a mechanical gear (76) and an overrunning clutch (73) are connected, which overrunning clutch (73) by reducing the target speed or drive power the faster contact roller can be put into operation.