WO1999006619A1

WO1999006619A1 - Winding device

Info

Publication number: WO1999006619A1
Application number: PCT/CH1998/000257
Authority: WO
Inventors: Werner Graber; Christian Spoerri
Original assignee: Maschinenfabrik Rieter Ag
Priority date: 1997-07-30
Filing date: 1998-06-11
Publication date: 1999-02-11
Also published as: DE19732832A1; EP0929705B1; AU7518998A; EP0929705A1; DE59802828D1; JP2001501265A

Abstract

The invention concerns winding device (10) for reproducing a lap roll (12), wherein the lap (14) is wound on a core (H) driven by an endless rotating belt (20). Said core is, for this purpose, located in a loop (22) of the stretched belt (20), which is formed between two deviating pulleys (R1, R2) which gradually widens as the lap roll (12) increases, the next empty core (H) being transferred, by means of a positioning arm (38) preferably capable of pivoting about an axis (B) from a core magazine (36) to a winding site. The positioning arm (38) can be moved between a load-engaging position, wherein it engages said core (H) coming from the core magazine (36), and a load-setting position wherein said core (H) is set in a predetermined winding position. The device comprises means (R3) for compensating shifts in the belt length occurring by sections when the core (H) is being transferred to its winding site. The core (H) transfer to its winding site as well as the compensating of shifts in the belt length are at least partly automated and controlled by a control unit (64). The compensating of the shifts in the belt length and the core (H) transfer to its winding site are co-ordinated by a control unit (64) such that the positioning arm (38) can be brought to the winding site when a predetermined working stress is overcome and the core (H) constantly rests on the belt (20).

Description

WRAP DEVICE

The invention relates to a winding device for producing a wadding roll, in which the wadding is wound onto a core driven by a revolving, endless belt, which for this purpose is received in a loop of the tensioned belt which is formed between two deflecting rollers and becomes larger with increasing wadding roll, the First, the empty core is transferred from a core magazine into a winding position by means of a positioning arm that can preferably be pivoted about an axis.

In a winding device of the type mentioned at the beginning of DE-PS 910 754, the cores are transferred into the winding position by means of two loading levers which can be pivoted about a common axis and which are provided with displaceable bolts for receiving a respective core, each of which is actuated by an electromagnet have to. To transfer a respective core, not only must the loading levers be pivoted, it is also necessary to apply the electromagnets in order to actuate the bolts forming the core receptacle accordingly.

The aim of the invention is to provide a winding device of the type mentioned at the outset which is improved in particular with regard to a construction which is as simple as possible and a problem-free core feed.

The object is achieved according to the invention in that the positioning arm at least between a take-over position in which it gene takes over core from the core magazine, and a positioning position is adjustable, in which the core assumes a defined winding position, that means are provided to compensate for belt length shifts occurring in sections during the transfer of the core into the winding position, that both the transfer of the core into the winding position and the compensation of the belt length displacements are at least partially automated and controlled by a control device and that the compensation of the belt length displacements and the transfer of the core into the winding position are coordinated via the control device in such a way that the positioning arm overcomes a predeterminable belt tensioning force and constant contact of the core with Belt can be transferred into the winding position.

With this design, a high degree of automation is achieved with a simple and therefore inexpensive construction, with the reliable supply of the core being ensured due to the compensation of the belt length displacements coordinated with the transfer of the core into the winding position or the corresponding adjustment of the positioning arm.

The control device is preferably coupled to at least one sensor that detects a respective position of the position arm.

In an expedient practical embodiment of the winding device according to the invention, the control device is designed in such a way that the belt is only displaced by the compensating means after the positioning arm has been released for a respective transfer arm. A predetermined time has elapsed from the core into the winding position.

If the control device is coupled to at least one sensor monitoring a respective position of the positioning arm or the core, then according to an alternative expedient embodiment a respective displacement of the belt can also be triggered by the compensating means as a function of the relevant sensor signals.

In order to ensure both a problem-free removal of cores from the core magazine and a reliable, problem-free transfer of the respective core into a defined winding position, the positioning arm is preferably provided with a core receptacle which comprises two resiliently designed and / or spring-loaded clamping jaws which are connected to the Placing the core receptacle on the respective core are pressed apart against the spring force and return to their starting position after removal of the core due to the spring force, the positioning arm being adjustable via a drive coupled to a control device.

Because of this design, it is sufficient to adjust the positioning arm accordingly, for example to pivot it. An active application of the core admission is not necessary. The respective core is inevitably received and held in place when the core holder is placed on it. The jaws are pressed apart against the spring force. No active loading of the core intake is required, even with the core delivery. If the core is held in the winding position, the core holder is reset the positioning arm pulled from this, the clamping jaws return to their starting position due to the spring force. The positioning arm is adjusted via the drive coupled to the control device. Thus, with a simple structure, it is possible to completely automate the entire core feed in a problem-free manner.

The core magazine is expediently designed in a shaft-like manner, the cores being able to be transferred one after the other into a take-over area of the core magazine in which a respective core is taken over by the core holder of the positioning arm. In this case, a sensor coupled to the control device is preferably provided, by means of which the takeover area of the core magazine is monitored to determine whether a core to be taken over by the core holder of the positioning arm is present or not.

In a preferred practical embodiment, at least one sensor coupled to the control device serves to monitor the core receptacle of the positioning arm for whether a core is accommodated in it or not. This sensor assigned to the core receptacle preferably detects a pushing apart of the clamping jaws which results when the core receptacle is placed on a respective core. Such a sensor can thus be arranged, for example, directly on the positioning arm or the core receptacle or on a clamping jaw. After such a sensor can be used to determine whether the core holder of the positioning arm has detected the core arranged in the take-over area of the core magazine, this sensor can also be used to determine whether the positioning arm has reached the relevant position has or not. An additional position sensor for detecting this position can thus be dispensed with if necessary.

In a preferred practical embodiment, a respective core is taken from the core magazine into the core receptacle when the positioning arm is in its take-over position, while the core is released into the defined winding position when the positioning arm is taking up its position. In this case, the control device is expediently coupled to at least one sensor that detects the positioning position of the positioning arm. In principle, the use of a sensor that detects the takeover position of the positioning arm is also conceivable. Instead of such a position sensor which detects the takeover position of the positioning arm, the sensor already mentioned can also be provided for monitoring the core holder.

In a preferred embodiment in practice, the core magazine in the take-over area is provided with a locking device, which can preferably be actuated via the control device, in order to retain a respective core in the take-over area or to release it for subsequent transfer into the winding position.

Advantageously, at least one of the deflection rollers is adjustable between a working position provided for forming the loop and an ejection position, into which this deflection roller can be transferred in order to eject the lap wrap by tightening the belt while lifting the loop. In this case, it is advantageous if the control device has at least one of the ejecting positions in question Deflection roller detecting sensor and / or is coupled to a sensor that detects the ejection of the wadding roll.

In a relevant embodiment of the winding device according to the invention, the locking device assigned to the take-over area of the core magazine is expediently only deactivated or the core captured by the core receptacle is only released and transferred from the core magazine into the winding position by a corresponding adjustment of the positioning arm when the relevant deflecting roller becomes its Has reached the ejection position and the cotton wadding has been ejected. In addition, the control device is expediently coupled to a sensor that detects the winding diameter and is designed such that when a predeterminable winding diameter is reached, the belt drive is stopped and the deflection roller in question is then transferred to the ejection position.

Advantageously, in addition to a tensioning device tensioning the belt during the winding process, at least one additional compensating element is provided, by means of which at least the largest part of belt length displacements occurring in sections during the transfer of the core into the winding position is compensated for, while those during the winding process become larger as a result of the increasing wadding roll Loop length displacements occurring in sections are at least predominantly compensated for by the tensioning device. This compensation element can thus be dimensioned in particular smaller than the clamping device. In addition, it can be designed for the fastest possible compensation of the generally smaller belt length displacements, as a result of which the quicker transfer of the Kerns in the defined winding position is possible. In practice, the belt is guided over a plurality of deflection rollers, so that, for example, at least one of these deflection rollers can be correspondingly displaceable and / or pivotable to form a respective compensating element. In principle, however, the use of one or more separate compensating elements is also possible.

Advantageously, the control device can also be used to actuate a locking device of the core magazine which is provided in front of the takeover area and is intended to hold back a respective core in an area located in front of the takeover area or to release it for subsequent transfer into the takeover area.

In a preferred embodiment of the winding device according to the invention, the positioning arm can be pivoted about a fixed axis.

The positioning arm is expediently adjustable via a hydraulic, pneumatic or electrical drive coupled to the control device and in particular controllable as a function of the respective sensor signals. This drive assigned to the positioning arm expediently comprises at least one cylinder / piston unit.

In a practical embodiment, the locking device assigned to the take-over area of the core magazine can be actuated by at least one, preferably two, cylinder / piston units, in particular arranged on opposite sides of the core magazine. Also for actuating the in front of the takeover area of the core a cylinder / piston unit can be provided.

A particularly simple construction of the core receptacle is obtained when the two clamping jaws are loaded into their starting position by at least one spring, in which they are pressed against one another up to a predeterminable mutual distance. For example, if the two clamping jaws are pivotable relative to one another and are each extended beyond the pivot axis by a leg extending away from the clamping receptacle, the spring is preferably arranged between the two legs. It can sit on a screw passing through the two legs, the distance between the clamping jaws being specifiable by this screw, which is preferably provided with a nut.

In a preferred embodiment of the winding device according to the invention, the core can be transferred into a defined winding position by the positioning arm, in which it can be rotated about a fixed axis during the subsequent winding process. The cores can in particular be sleeves. During the winding process, a respective core is expediently arranged between two winding disks, which are provided with lugs which engage in the sleeve-like core and through which the core transferred by the positioning arm is finally centered. As a rule, it is therefore sufficient if the core is transferred through the positioning arm into the area of the centering axis of the winding disks. The control device can be coupled to at least one sensor, by means of which the respective positioning and / or position of at least one winding disk is monitored.

In a preferred practical embodiment of the winding device according to the invention, the shaft-like core magazine is inclined with respect to the horizontal and the takeover area is formed by the lower end area of the core magazine. The cores can thus be stacked in the magazine in such a way that the transfer of the bottom core in each case into the takeover area is at least supported by gravity and, if appropriate, the dynamic pressure of further cores contained in the core magazine.

The winding device according to the invention can be used in particular in the combing mill, where it receives, for example, a fleece which runs out of a drafting system and is fed in via sweeping plates, calender rollers and / or the like. The finished winding is then fed to a combing machine.

The invention is explained below using an exemplary embodiment with reference to the drawing; in this show:

FIG. 1 shows a schematic representation of the basic structure of a possible embodiment of a winding device,

FIG. 2 shows a schematic illustration of a core inserted between two winding disks, Figure 3 is a schematic side view of the free end of the

Positioned arm holder provided,

FIG. 4 shows a schematic illustration of the locking device provided in the takeover area of the core magazine,

Figure 5 is a schematic representation of the locking device provided in front of the take-over area of the core magazine and

FIG. 6 shows a simplified, purely exemplary circuit diagram of the winding device provided with a control device.

Figure 1 shows in a purely schematic representation the basic structure of a possible embodiment of a winding device 10 for producing a wadding roll 12. In principle, such a winding device 10 can serve to roll up a nonwoven, a pile or wadding of fiber material into a wrap before the fiber material is subjected to further treatment is subjected. Thus, the winding device can serve, for example, in a combing mill to receive a fleece that runs out of a drafting system and is fed in via sweeping plates, calender rollers and / or the like, the generated winding being subsequently presented to a combing machine. For the sake of simplicity, the following only refers to cotton wool in connection with the supplied fiber material, which should not be understood in a restrictive sense. Cotton 14 is fed to the winding device 10 via a cotton feed, not shown here.

The cotton wool 14 is wound on a sleeve-like core H, which in the illustrated embodiment is rotatably supported around a fixed axis A during the winding process, which is achieved in that it is between two axes A during this winding process in the manner shown in FIG rotatable winding disks 16, 18 is clamped. The core H is driven by a revolving, endless belt 20, through which a vertically downwardly extending loop 22 is formed between two deflection rollers R1 and R2, in which the core H is accommodated during the winding process.

In the present case, the sleeve-like core H and thus the wadding 12 formed on it is driven counterclockwise by the belt 20, as indicated by the arrow F. The loop 22 of the belt 20 that surrounds the sleeve-like core H and thus the cotton wadding that is being formed becomes larger as the wadding winding increases, the belt 20 being tensioned by a tensioning device 24 during the entire winding process. This tensioning device 24 comprises a tensioning roller Rs. In the present case, this tensioning roller Rs is mounted on a swivel arm 26 which is adjustable, i.e. by means of a drive 28 formed, for example, by a cylinder / piston unit. is pivotable.

In addition to the two deflection rollers Rl and R2 forming the loop 22 between them and the tensioning roller Rs of the tensioning device 24, the belt 20 is guided over further deflection rollers R3 and R4. The deflection roller R2 can be adjusted between a working position provided for forming the loop 20 (see FIG. 1) and an ejection position (not shown) into which this deflection roller R2 can be transferred in order to eject the finished cotton wadding 12 shown in dashed lines in FIG. 1 by the belt 20 is lifted while lifting the loop 22. For this purpose, the deflection roller R2 in the present exemplary embodiment is mounted on the free end of a swivel arm 30 which can be swiveled about the axis A via a drive 32, which in turn comprises a cylinder / piston unit, for example (cf. FIG. 1). The ejected finished wadding roll 12 then arrives in a roll holder 34.

After the winding process has ended and before the winding is ejected, the cotton is first separated. This ensures, in particular, that the winding does not wind up again before the rolling out process. If the cotton feed is carried out via calender rollers, a possible variant of a separation is that when a predetermined length of wound cotton is reached, the cotton feed is interrupted by the calender rollers while the belt is still in motion for a certain time. The tearing end can be positioned at a defined position on the wadding wrap by means of a predetermined time in which the finished wound wadding wrap is still rotated by the belt with the calender rolls at a standstill.

For an ejection of the respective wadding roll 12, the swivel arm 30 carrying the deflection roller R2 is pivoted to the right, whereupon the wadding roll 12 arrives in the roll holder 34. After the insertion of the next sleeve-like described in more detail below Core H, the deflecting roller R2 is then brought back into the working position shown in FIG. 1 by pivoting the swivel arm 30 back.

In the present exemplary embodiment, the belt 20 is driven by the deflection roller R3.

A core magazine 36 containing a plurality of sleeve-like cores H is arranged to the right above the two deflection rollers R1, R2 forming the loop 22 (see FIG. 1). A positioning arm 38 which can be pivoted about a fixed axis B is provided for transferring a respective empty core H from the core magazine 36 into the winding position defined by the axis A. This positioning arm 38 is provided with a core receptacle 40 at its free end. In the shaft-like core magazine 36, which is slightly inclined with respect to the horizontal, the cores H pass successively into a takeover area 42, in which the respective core H to be transferred into the winding position is taken over by the core receptacle 40 of the positioning arm 38. As can be seen from FIG. 1, the take-over area 42 of the shaft-like core magazine 36, which is inclined with respect to the horizontal, is formed by the lower end area of this core magazine 36.

As can best be seen from FIG. 3, the core receptacle 40 of the positioning arm 38 comprises two spring-loaded clamping jaws 44, 46, which are pressed apart against the spring force when the core receptacle 40 is placed on a respective core H and after removal of the core H assume their starting position shown in Figure 3 due to the spring force. In the illustrated embodiment, the two jaws 44, 46 of the core receptacle 40 are loaded by a spring 48 into an initial position in which they are pressed against each other up to a predetermined mutual distance a.

The two clamping jaws 44, 46 can be pivoted relative to one another about an axis C and in each case extended beyond this pivot axis C by a leg 52, 54 extending away from the clamping receptacle 50, the spring 48 being arranged between the two legs 52, 54 . The clamping jaws 44, 46 extended by the legs 52, 54 are reinforced in the manner shown in FIG. 3 by lateral elements 56, 58.

In addition, in the exemplary embodiment shown, the spring 48 is seated on a screw 60 passing through the two legs 52, 54 and to which a nut 62 is assigned according to FIG. The distance a between the jaws 44, 46 can be adjusted by means of this screw 60 with the associated nut 62.

The positioning arm 38 can be pivoted via a drive 66 coupled to a control device 64 (see FIG. 6), which in the present case again comprises at least one cylinder / piston unit (see FIG. 1). The control of this drive 66, which is assigned to the positioning arm 38, takes place via the control device 64, as do other processes serving in particular for the sleeve feed, depending on sensor signals. As can be seen in particular from FIGS. 1 and 3, a sensor 68 is provided which is coupled to the control device 64 (cf. FIG. 6) and by means of which the core receptacle 40 of the positioning arm 38 is monitored to determine whether a core H is accommodated in it Not. In the present case, this sensor 68 assigned to the core receptacle 40 fulfills the function of a switch which is arranged on the leg 54 or the reinforcement 58 and is actuated by a stop 70 which is connected to the other leg 52 of the core receptacle 40 provided in the extension of the clamping jaw 44 is (see FIG. 3). The sensor 68 thus detects that the clamping jaws 44, 46 are pushed apart when the core receptacle 40 is placed on a respective core H. The pivoting position of the positioning arm 38 in which the core receptacle 40 one in Takeover area 42 of the core magazine 36 has provided the core H.

The positioning arm 38 can thus be adjusted in particular between this take-over position, in which a respective core H is taken from the core magazine 36 into the core receptacle 40, and a positioning position, in which the core H assumes the winding position defined by the axis A, into which it moves out the core receptacle 40 is delivered. It is sufficient that the core in question is first transferred into the area of the axis A predetermined by the centering axis of the two winding disks 16, 18, which are provided with lugs 72, 74 engaging in the sleeve-like core H, through which the rotatable between the two Winding discs 16, 18 core H to be clamped is finally centered. In the exemplary embodiment shown, the control device 64 is coupled to a sensor 76 which detects the positioning position of the position arm 38, while the takeover position of the positioning arm 38, in which a respective core H is taken from the core magazine 36 into the core receptacle 40, is detected indirectly via the sensor 68 can.

The positioning arm 38 can additionally be pivoted into a rest position, in which it lies both outside the loop area of the belt 20 and outside the core magazine area, i.e. is pivoted further upwards in the present case. This upper rest position of the positioning arm 38 is detected by a sensor 78 (see FIG. 1). This sensor 78 is again connected to the control device 64 (see FIG. 6).

The control device 64 is also coupled to a sensor 80, by means of which the takeover area 42 of the core magazine 36 is monitored to determine whether a core H to be taken over by the core receptacle 40 of the positioning arm 38 is present or not (cf. FIGS. 1 and 6).

In the take-over area 42 of the core magazine 36 there is a locking device 82 which can be actuated via the control device 64 (cf. in particular FIGS. 1, 4 and 6) and which serves to retain a respective core H in the take-over area 42 or to release it for subsequent transfer into the winding position.

In the exemplary embodiment shown, this front locking device 82 assigned to the take-over area 42 of the core magazine 36 is separated by two on the two opposite sides of the core magazine. Cylinder / piston units 84, 86 arranged at interest 36 can be actuated (cf. FIGS. 1 and 4).

According to FIG. 4, the cylinders of the two lateral cylinder / piston units 84, 86 are hinged at the upper end to bearings 88, 90 which are arranged in the upper region on the outside of the relevant side wall of the core magazine 36. The outer ends of the piston rods are connected in an articulated manner via attached fork heads 92, 94 to elements 100, 102 attached to a respective rod hinge 96, 98 in order to hold a locking element 104 in a closed position by appropriate actuation of the cylinder / piston units 84, 86 or transfer to a release position.

The core magazine 36 is provided with a further locking device 106 which can be actuated via the control device 64 (cf. in particular FIGS. 1, 5 and 6) and which serves to retain a respective core H in an area located in front of the takeover area 42 (cf. FIG. 1) or to be released for subsequent transfer into the takeover area 42.

In the present exemplary embodiment, this locking device 106 provided in front of the take-over area 42 of the core magazine 36 can be actuated by at least one cylinder / piston unit 108 (cf. FIGS. 1, 5 and 6). A flap 110 which is pivotable about an axis D and is angled in the region of this pivot axis D is provided as the locking element (cf. FIGS. 1 and 5). According to FIG. 5, the cylinder of the relevant cylinder / piston unit 108 is articulated at one end to a bearing 112 which is attached to the outside of the bottom of the core magazine 36. The free end of the piston rod is articulated to a connecting element 114. pelt, which is firmly connected to the left leg of the angled flap 110 in FIG. 5, through which a core in question is retained before it is released for transfer into the takeover area 42 (see FIG. 1). The free end of the right leg of the flap 110 is bent in the manner shown in Figure 5. This bent end of the right leg of the flap 110 retains a subsequent core when the flap is pivoted counterclockwise, while a front core H is released by the left leg. This release position is shown in dashed lines in FIG. 5, while the blocking position is shown in solid lines.

According to FIG. 1, the drive 32 for the swivel arm 30 carrying the deflection roller R2 is assigned two sensors 1 16, 1 18. The working position shown in FIG. 1 can be detected, for example, by sensor 116, and the ejection position of deflection roller R2 can be detected, for example, by sensor 118. These two sensors 116 and 118 are also connected to the control device 64.

The control device 64 is also coupled to a sensor 120 (see FIG. 1) which is arranged in the region of the winding holder 34 and detects the ejection of the cotton winding 12.

In the present case, the control device 64 connected to the relevant sensors is designed, inter alia, such that the front locking device 82 assigned to the take-over area 42 of the core magazine 36 is only deactivated or the core H detected by the core receptacle 40 is only released and is pivoted accordingly Position arm 38 about the fixed axis 78 from the core magazine 36 in the Winding position is transferred when the respective deflection roller R2 has reached its ejection position and the wadding roll 12 has been ejected.

The control device 64 is also coupled to a sensor 122 which detects the winding diameter (cf. FIGS. 1 and 2) and is designed such that when a predeterminable winding diameter is reached, the belt drive is stopped and then the deflection roller R2 is moved into the ejection position.

As can be seen from FIG. 1, the drive 28 assigned to the tensioning device 24 is assigned two sensors 124, 126, by means of which the relevant positions of the tensioning roller Rs can be detected. These two sensors 124 and 126 are also connected to the control device 64 again.

The control device 64 is also coupled to two sensors 128, 130, by means of which the respective positioning and / or position of the two winding disks 16, 18 can be monitored (cf. FIGS. 2 and 6). In addition to these two sensors 128, 130, the sensor 122 can also be seen in FIG. 2.

In the present case, the respective core H is transferred into the winding position by the positioning arm 38 while overcoming the respective belt tensioning force. In this case, it is expedient if, in addition to the tensioning device 24 tensioning the belt 20 during the winding process, at least one additional compensating element is provided, by means of which at least the majority of during the transfer of the core H in the winding-up position in sections occurring belt length displacements is compensated for, while the belt length displacements occurring in sections during the winding process as a result of the loop 22 increasing in size with increasing wadding roll 12 are at least predominantly compensated for by the tensioning device 24. Such a compensating element can be formed, for example, by a correspondingly displaceable and / or pivotable deflection roller, for example the deflection roller R3. However, the compensating means in question can also comprise further or different compensating elements. Such compensation elements can then in particular be dimensioned smaller than the tensioning device 24. Overall, a faster compensation of the generally smaller belt length displacements in the core feed is possible. In the same way, the belt length changes occurring during the pivoting of the deflection roller R2 can also be compensated for.

As soon as it was determined via the sensor 68 that an empty core H provided in the take-over area 42 of the core magazine 36 was detected by the core receptacle 40 of the positioning arm 38, and it was determined via the sensors 118 and 120 that the finished wadding roll 12 after swiveling the If the deflection roller R2 has been ejected, the front locking device 82 assigned to the take-over area 42 is deactivated and the drive 66 assigned to the positioning arm 38, here formed by a cylinder / piston unit, is released for a subsequent pivoting of the positioning arm 38 downward into the positioning position. The sleeve-like core H thus arrives in the region of the centering axis A of the lateral winding disks 16, 18, through the attachments 72, 74 of which it is finally centered. The positioning and / or positioning The sensors 128 and 130 monitor the winding disks 16, 18 (cf. FIG. 2).

After the relevant core H is clamped between the two rotatably mounted winding disks 16, 18, the positioning arm 38 is pivoted upward again via the associated drive 66 until it has reached its rest position detected by the sensor 78. In the meantime, the two clamping jaws 44, 46 of the core receptacle 40 have been pushed apart again by the spring 48, as a result of which the switch formed by the sensor 68 has been released again (cf. in particular FIG. 3). The sensor 80 indicates that the take-over area 42 of the core magazine 36 has become free again, whereupon a new sleeve-like core H can roll into the front take-over area 42 after the rear locking device 106 has been released accordingly. The front locking device 82 has already been reactivated with the response of the sensor 78 which detects the upper rest position of the positioning arm 38. After it has been determined via the sensor 80 that a core H is again present in the take-over area 42, the positioning arm 38 can be pivoted into the take-over position shown in FIG. 1, in which the core H provided in the take-over area 42 is gripped by the core holder 40. When the core receptacle 40 is placed on the core H, the two spring-loaded clamping jaws 44, 46 are pressed apart against the spring force. As a result, it is sufficient to pivot the positioning arm 38. A special application or control of the core receptacle 40 is not necessary. Rather, the respective core H is inevitably received and held in place when the core receptacle 40 is placed on it. Accordingly, there is no special loading or activation of the core receptacle 40 even when the core is released required. If the core H is held in the winding position by the two winding disks 16, 18, the core receptacle is pulled away from the latter when the positioning arm 38 is pivoted back into the upper rest position, the clamping jaws 44, 46 returning to their starting position due to the spring force.

The core changing process can then begin again.

FIG. 6 shows a simplified, purely exemplary circuit diagram of the winding device comprising the control device 64.

Thereafter, the control device 64 is in particular provided with the sensor 76 that detects the positioning position of the positioning arm 38 (cf. FIG. 1), the sensor 68 assigned to the core receptacle 40, the sensor 78 that detects the rest position of the positioning arm 38, and the sensor that monitors the transfer area 42 of the core magazine 36 80 and the sensor 120, which monitors the winding holder 34 (cf. FIG. 1) for an ejected cotton winding 12.

In addition, the control device 64 is connected to three valves 132, 134 and 136 via two lines each. As can be seen in FIG. 6, the two valves 132 and 136 can each be formed, for example, by a 5/3-way valve and the valve 134 can be formed, for example, by a 5/2-way valve.

The two cylinder / piston units 84, 86 of the drive assigned to the front locking device 82 (see FIGS. 1 and 4) are actuated via the valve 132 controlled by the control device 64. That from The valve 134 controlled by the control device 64 serves to actuate the cylinder / piston unit 108 assigned to the rear locking device 106 (see FIGS. 1 and 5). The cylinder 136 forming the drive 66 of the positioning arm 38 is activated by the third valve 136 controlled by the control device 64 / Piston unit actuated.

As can be seen from FIG. 6, the two control inputs Y1 and Y2 of the valve 132 can be acted upon via the control device 64. If the belt drive is switched on, the right control input Y2 is acted upon, while the left control input Yl remains unaffected. In this case, the front locking device 82 comprising the cylinder / piston units 84, 86 is activated.

When the belt drive is switched off, neither of the two control inputs Y1 and Y2 is activated, so that the valve 132 assumes a central position. The front locking device 82 thus initially remains activated.

After it has been determined via the sensor 68 that a core H provided in the takeover area 42 has been detected by the core receptacle 40, the front locking device 82 for releasing the core H in question is deactivated by actuating the left control input Y1 while the right control input Y2 is not acted upon remains.

If it is determined via the sensor 76 that the positioning arm 38 has reached its lower positioning position, the right control input Y2 of the valve 132 is acted on, while the left control input Y1 remains unaffected. The front locking device 82 is thus reactivated via the two cylinder / piston units 84, 86. The two control inputs Y3 and Y4 of the valve 134 can also be acted upon via the control device 64.

If the belt drive is switched on, the left control input Y3 is acted upon, while the right control input Y4 remains unaffected. In this case, the rear locking device 106 comprising the cylinder / piston unit 108 is activated. If it is now determined via the sensor 80 that there is no core H in the take-over area 42 of the core magazine 36, the right control input Y4 is acted upon, while the left control input Y3 remains unoccupied. As a result, the rear locking device 106 is deactivated via the cylinder / piston unit 108 in order to release a respective core H for transfer into the takeover area 42. After a subsequent waiting time of about 3 seconds, the left control input Y3 is then acted upon again, while the right control input Y4 remains unassembled, as a result of which the rear locking device 106 is reactivated. If there is still no message about the presence of the core H in the takeover area 42 via the sensor 80, this routine just described is repeated. If the sensor 80 still does not deliver a corresponding signal, an error message can be generated which indicates that there is no core H in the takeover area 42.

In addition, two control inputs Y5 and Y6 of valve 136 are acted upon via control device 64.

If the belt drive is switched on, the left control input Y5 is acted upon, while the right control input Y6 remains unaffected. In this case, the positioning arm 38 can in particular be held in its upper rest position.

If the belt drive is switched off, neither of the two control inputs Y5 and Y6 is applied. The valve 136 thus assumes a central position in which the positioning arm 38 is held in its respective position, in particular for safety reasons.

If it is determined via the sensor 120 that a finished wadding roll 12 (see FIG. 1) has been ejected, the right control input Y6 is acted on for a subsequent core change, while the left control input Y5 remains unoccupied. After the relevant core H has been transferred to the winding position and is clamped between the two winding disks 16, 18, which can be determined, for example, by means of the two sensors 128, 130 (cf. FIG. 2), the left control input Y5 is again acted upon while the right control input Y6 remains unoccupied, whereupon the positioning arm 38 is pivoted into its upper rest position, in which it remains until the next core change.

In the present exemplary embodiment, the positioning arm 38 can thus be adjusted at least between the take-over position in which it takes over a respective core H from the core magazine 36 and the positioning position in which it releases the core H into the defined winding position. In addition, means are provided for the deflection roller R3, for example, in order to compensate for belt length changes occurring in sections during the transfer of the core H into the winding position. Both the transfer of the core H in the winding position and the Compensation for the belt length displacements is at least partially automated and controlled by the control device 64. It is particularly advantageous if the compensation of the belt length displacements and the transfer of the core H into the winding position are coordinated via the control device 64 in such a way that the positioning arm 38 can be transferred into the winding position while overcoming a preselectable belt tension force and constant contact of the core H on the belt 20 .

The control device 64 can expediently be designed such that a respective displacement of the belt 20 by the compensating means, preferably comprising the deflection roller R3, only takes place after a predeterminable time has elapsed from the release of the positioning arm 38 for a respective transfer of the core H into the winding position .

For example, after a signal for core transfer occurs, the lock in the sleeve channel is released, whereupon the positioning arm is pivoted downward. A timer for controlling the compensation means is also triggered in order to set a predefinable delay time of, for example, approximately 3 seconds. The sleeve-like core is then pressed against the belt. The timer triggers the control for the compensating means R3, whereby the belt is displaced so that the tracked core can be transferred to the winding position. As soon as this position is reached, which can be determined in particular by at least one sensor, the belt displacement is stopped. The sleeve-like core is now clamped between the winding disks, whereupon the positioning arm is returned to the neutral position. is pivoted back. The swiveled out pulley is swiveled in again, whereupon the winding process is started.

After the control device 64 is coupled to at least one sensor 76, 78 which monitors the position of the core H or the positioning arm 38, a respective displacement of the belt 20 can also be triggered by the compensating means comprising the deflection roller R3 as a function of the sensor signals concerned.

In this case, a timer is not used. Rather, the position of the core or the positioning arm is monitored via appropriately arranged sensors. As soon as the sensor or sensors in question respond, the sleeve-like core lies on the belt with the correct tension. Then the control device triggers the displacement of the deflection roller R3 assigned to the compensating means, so that the core can be transferred into the winding position.

Claims

P a t e n t a n s r u c h e

Winding device (10) for producing a wadding roll (12), in which the wadding (14) is wound up on a core (H) driven by a continuous, endless belt (20), which is used for this purpose in a between two deflection rollers (Rl, R2) Formed loop (22) of the tensioned belt (20), which increases with increasing wadding roll (12), the initially empty core (H) being removed from a core magazine (36) by means of a positioning arm (38) which can preferably be pivoted about an axis (B) ) is transferred into a winding position, characterized in that the positioning arm (38) is adjustable at least between a take-over position in which it takes over a respective core (H) from the core magazine (36) and a positioning position in which the core (H ) assumes a defined winding position, that means (R3) are provided in order to compensate for belt length changes occurring in sections during the transfer of the core (H) into the winding position hen that both the transfer of the core (H) into the winding position and the compensation of the belt length shift are at least partially automated and controlled by a control device (64) and that the compensation of the belt length shift and the transfer of the Core (H) in the winding position via the control device (64) are coordinated so that the positioning arm (38) can be transferred to the winding position while overcoming a predetermined belt tension and constant contact of the core (H) on the belt (20).

2. Winding device according to claim 1, characterized in that the control device (64) is coupled to at least one sensor (76, 78) detecting a respective position of the positioning arm (38).

3. Winding device according to claim 1 or 2, characterized in that the control device (64) is designed so that a respective displacement of the belt (20) by the compensating means (R3) takes place only after the release of the positioning arm (38) for a respective transfer of the core (H) into the winding position has elapsed for a predetermined time.

4. Winding device according to claim 1 or 2, characterized in that the control device (64) with at least one position of the core (H) or the positioning arm (38) monitoring sensor (76, 78) is coupled and that a respective displacement of the belt (20) is triggered by the compensating means (R3) as a function of the sensor signals concerned.

5. Winding device according to one of the preceding claims, characterized in that the positioning arm (38) is provided with a core receptacle (40) which comprises two resiliently designed and / or spring-loaded clamping jaws (44, 46) which are attached to the core receptacle ( 40) are pressed apart against the spring force on the respective core (H) and, after the core (H) has been removed, return to their starting position due to the spring force, and that the positioning arm (38) is connected via a drive (64) coupled to a control device (64). 66) is adjustable.

6. Winding device according to one of the preceding claims, characterized in that the core magazine (36) is formed like a shaft and the cores (H) can be successively transferred into a takeover area (42) of the core magazine (36) in which a respective core (H) is taken over by the core holder (40) of the positioning arm (38).

7. Winding device according to claim 6, characterized in that the control device (64) is coupled to at least one sensor (80) through which the takeover area (42) of the core magazine (36) is monitored to determine whether one of the core holder (40) of the positioning arm (38) to be taken over core (H) is present or not.

8. Winding device according to one of the preceding claims, characterized in that that the control device (64) is coupled to at least one sensor (68), by means of which the core receptacle (40) of the positioning arm (38) is monitored as to whether a core (H) is accommodated in it or not.

9. Winding device according to claim 8, characterized in that the sensor (68) assigned to the core receptacle (40) detects a pressing apart of the clamping jaws (44, 46) resulting from the placement of the core receptacle (40) on a respective core (H).

10. Winding device according to one of the preceding claims, characterized in that a respective core (H) from the core magazine (36) in the core receptacle (40) is taken over at its takeover position-taking positioning arm (38) and that the core (H) at his Positioning position assuming positioning arm (38) is released into the defined winding position.

11. Winding device according to one of the preceding claims, characterized in that the control device (64) is coupled at least to a sensor (76) detecting the positioning position of the positioning arm (38).

12. Winding device according to one of the preceding claims, characterized in that the positioning arm (38) additionally in a rest position bar in which it lies both outside the loop area of the belt (20) and outside the core magazine area.

13. Winding device according to claim 12, characterized in that the control device (64) is coupled to a sensor (78) detecting the rest position of the positioning arm (38).

14. Winding device according to one of the preceding claims, characterized in that the core magazine (36) in the takeover area (42) is provided with a locking device (82), which can preferably be actuated via the control device (64), around a respective core (H) in the takeover area ( 42) withhold or release for subsequent transfer to the winding position.

15. Winding device according to one of the preceding claims, characterized in that at least one of the deflecting rollers (R1, R2) is adjustable between a working position provided for forming the loop (22) and an eject position into which this deflecting roller (R2) can be transferred eject the wadding roll (12) by tightening the belt (20) while lifting the loop (22).

16. Winding device according to claim 15, characterized in that the control device (64) at least with a sensor (118) detecting the ejection position of the respective deflection roller (R2). and / or is coupled to a sensor (120) which detects the ejection of the wadding roll (12).

17. Winding device according to claim 16, characterized in that the take-over area (42) of the core magazine (36) associated locking device (82) is only deactivated or the core (H) detected by the core receptacle (40) is only then released and by a Corresponding adjustment of the positioning arm (38) is transferred from the core magazine (36) to the winding position when the deflecting roller (R2) in question has reached its ejection position and the cotton roll (12) has been ejected.

18. Winding device according to claim 17, characterized in that the control device (64) is coupled to a sensor (112) which detects the winding diameter and is designed such that the belt drive is stopped when a predeterminable winding diameter is reached and then the relevant deflection roller (R2) is transferred to the ejection position.

19. Winding device according to one of the preceding claims, characterized in that, in addition to a tensioning device (24) tensioning the belt (20) during the winding process, at least one additional compensating element (R3) is provided, by which at least the majority of during the transfer of the Kerns (H) in the winding position in sections occurring belt length wrestled is compensated for, while the belt length displacements occurring in sections during the winding process as a result of the loop (22) increasing in size with increasing wadding roll (12) are at least predominantly compensated for by the tensioning device (24).

20. Winding device according to one of the preceding claims, characterized in that the core magazine (36) in front of the take-over area (42) is provided with a locking device (106) which can preferably be actuated via the control device (64) in order to provide a respective core (H) in one to be held in front of the takeover area (42) or to be released for subsequent transfer to the takeover area (42).

21. Winding device according to one of the preceding claims, characterized in that the positioning arm (38) can be pivoted about a fixed axis (B).

22. Winding device according to one of the preceding claims, characterized in that the positioning arm (38) is adjustable via a hydraulic, pneumatic or electrical drive (66) which is coupled to the control device (64) and can be actuated in particular as a function of the respective sensor signals.

23. Winding device according to claim 22, characterized in that the actuator (66) associated with the positioning arm (38) comprises at least one cylinder / piston unit.

24. Winding device according to one of the preceding claims, characterized in that the take-over area (42) of the core magazine (36) associated locking device (82) by at least one, preferably two, in particular on opposite sides of the core magazine (36) arranged cylinder / piston Units (84, 86) can be actuated.

25. Winding device according to one of the preceding claims, characterized in that the locking device (106) provided in front of the take-over area (42) of the core magazine (36) can be actuated by at least one cylinder / piston unit (108).

26. Winding device according to one of the preceding claims, characterized in that the two clamping jaws (44, 46) of the core receptacle (40) are loaded into their starting position by at least one spring (48), in which they are up to a predetermined mutual distance (a ) are pressed against each other.

27. Winding device according to claim 26, characterized in that that the two clamping jaws (44, 46) are pivotable relative to one another and are each extended beyond the pivot axis (C) by a leg (52, 54) extending away from the clamping receptacle (50) and that the spring (48) between the two Legs (52, 54) is arranged.

28. Winding device according to claim 27, characterized in that the spring (48) sits on a screw (60) passing through the two legs (52, 54) and the distance between the clamping jaws (44, 46) is preferably by a nut ( 62) provided screw (60) can be predetermined.

29. Winding device according to one of the preceding claims, characterized in that the core (H) can be transferred by the positioning arm (38) into a defined winding position in which it can be rotated about a fixed axis (A) during the subsequent winding process.

30. Winding device according to claim 29, characterized in that sleeve-like cores (H) are provided and a respective core (H) is arranged during the winding process between two winding disks (16, 18) which engage in the sleeve-like core (H) approaches (72, 74) are provided, through which the core (H) transferred through the position arm (38) is finally centered.

31. Winding device according to one of the preceding claims, characterized in that the control device (64) is coupled to at least one sensor (128, 130) by means of which the respective positioning and / or position of at least one winding disk (16, 18) is monitored.

32. Winding device according to one of the preceding claims, characterized in that the shaft-like core magazine (36) is inclined with respect to the horizontal and the takeover area (42) is formed by the lower end area of the core magazine (36).

33. Use of the winding device according to one of the preceding claims in the combing room for receiving a fleece which runs out of a drafting system and is supplied via baffle plates, calender rollers and / or the like.