EP2186767A2 - Round magazine for a spooling station of an automatic cheese winder - Google Patents

Abstract

The magazine has a movably supported cover element (12) for closing a suction air channel (13). The cover element selectively, manually or automatically actuated, and mechanically locks thread ends of spinning cops at a closed condition. The cover element consists of a hand actuating cover (20) and an automatic cover (19). The two covers are separately actuated. A nut-shaped recess (22) is included in an upper side (21) of the actuating cover and forms an air-and-thread guiding channel, which is attached to the suction air channel. The guiding channel is closed by the automatic cover.

Description

The invention relates to a round magazine for a winding unit of a cheese winder according to the preamble of claim 1.

Round magazines for supplying the winding units of automatic cheese winder with fresh spinning heads are known and in the patent literature, for example in the DE 195 39 762 A1 , of the DE 198 16 188 A1 or the DE 37 09 735 C2 described.
Such round magazines are also the subject of the manual Schlafhorst Winding Systems "Autoconer 338", page 4/45 and page 4/46.

As known, such circular magazines essentially consist of a rotatably mounted magazine with receiving pockets for individual spinning cops, a lower platen with a Spinnkops Ausschleusöffnung and arranged in the region of the central longitudinal axis of the round magazine suction air channel for fixing the yarn ends of stockpiled in round magazine spinning cops.
The suction air channel can be closed by a cover element, which is rotatably mounted to a limited extent about a pivot axis which runs parallel to the suction air duct and can be actuated manually as well as mechanically.
The lid member, for example, when filling the round magazine with fresh spinning cops for inserting the thread ends of the spinning cops are pivoted by hand in the suction duct or in the course of the transfer of the spinning cops from the round magazine in its Abspulstellung at the winding unit and the subsequent Disposal of the cut ends of the thread can be controlled by machine.

Although such circular magazines have proven themselves many times in automatic winder and have been used successfully for a long time, even such round magazines are still capable of improvement.
In particular, in the region of the cover element, which, as explained above, temporarily closes a suction air duct arranged in the region of the central longitudinal axis of the round magazine and mechanically fixes the yarn ends of the spinning cops stored in the round magazine, difficulties may occasionally arise.
In the case of spinning cops, which have highly curling thread material, it may happen, for example, that the thread ends in the round magazine adjoin adjacent arranged spinning cops.
If such a spinning cop, the yarn end is twisted with the yarn end of an adjacent Spinnkopses, then transferred from the round magazine in its unwinding at the winding unit, there is a risk that it comes to complications, that is, the Saugluftströmung the at this time partially open suction air duct is not sufficient to pull the thread end so tight that it can be subsequently passed by a so-called auxiliary gripper safely to the hook tube of the winding unit, with the result that the thread transfer fails.

Since each failed thread transfer requires manual intervention on the part of the operating personnel, but the operator is already fully utilized with the filling of the round magazines multiple spoolers, a faulty thread transfer usually has a negative effect on the net effect of Spinning machines and should therefore be avoided as far as possible.

Based on round magazines of the type described above, the invention has the object to improve the known round magazines to the effect that, especially in connection with the transfer of spinning heads from the round magazine in the unwinding of the winding unit, difficulties in the yarn transfer are reliably avoided.

This object is achieved by a round magazine having the features described in the characterizing part of claim 1.

Further advantageous embodiments of the invention are the subject of the dependent claims.

The inventive construction of a round magazine with a manual cover and an automatic cover, which are each operable separately and in which in the top of the manual cover a groove-shaped recess is arranged, which forms a connected to the suction air duct of the round magazine air and thread guide channel, closed by the automatic cover is, leads to an aerodynamically advantageous construction.
That is, the prevailing when opening the automatic cover in the groove-shaped recess of the manual cover Saugluftströmung not only ensures that the thread end of the positioned in the transfer position of the round magazine Spinnkopses slides into the groove-shaped recess, but ensures during the transfer of a spinning cop from the round magazine in the unwinding position the winding unit also a reliable separation of the thread end of the respective spinning cop. Furthermore, the suction-air flow impinging in the groove-shaped recess of the manual operating cover also ensures that the thread end remains taut during the transfer of the spinning cop or is pulled back taut immediately after the spinning cop has reached its unwinding position.
In this way, it is ensured that the auxiliary gripper, which is then to transfer the thread end to the gripper tube of the winding unit, always reliably grasp the thread strand stretched between the suction air channel of the round magazine and the spinning cop positioned in the unwinding position and transfer it to the gripper tube of the winding unit.

In an advantageous embodiment, as described in claim 2, the manual operating cover and the automatic cover are arranged on a bearing part and rotatably mounted limited in each case about a horizontal pivot axis.
Such training allows both the
Manual operating lid and the automatic lid in a simple manner to open each by vertically directed force, which is not the manual override lid but especially in connection with the automatic lid, the realization of a cost-effective drive mechanism 'allows.
That is, due to the horizontal pivot axis of the automatic cover, simple, for example, inexpensively made of plastic, push tubes can be used instead of torsionally stiff rotary lever previously required.

As set forth in claim 3 comes as a closing mechanism for the manual operating cover preferably a spring element is used, which, between the bearing part and the manual operating cover switched on, on the one hand holds the manual operating lid reliably in a starting position in which the suction air duct is hermetically sealed, and on the other hand, a problem-free opening of the manual operating lid by simple hand pressure allows.
The bearing part on which both the manual operating cover and the automatic cover are mounted rotatably limited, it is, as set forth in claim 4, arranged in an advantageous embodiment on the upper tube of the telescopically formed Saugluftkanals, which in turn is connected via a clamping block height adjustable with the down tube of the suction air duct ,
Such a design makes it possible to optimally position the cover element according to the invention, corresponding to the length of the spinning cops to be processed.
By means of the clamping block, the top tube and thus the bearing part, for example, always be arranged so that on the one hand the manual cover for the operator remains easily accessible, but on the other hand prevents it by an excessive positioning of the lid member to an unintentional withdrawal of thread material from the spinning cops comes, which would lead to material losses.

As described in claim 5, it is also provided in an advantageous embodiment that rotatably on the down tube of the suction air duct a bearing bush is fixed, on which a cam lever is rotatably mounted, which, acted upon by a spring element, rests against a defined drivable cam.
By the spring element is thereby ensured that the cam lever always abuts without play on the cam, so that the introduced via the cam movement is completely passed on to the cam lever.

As described in claim 6, the cam lever in an advantageous embodiment of a helical contact surface, which corresponds to a corresponding helically shaped contact surface of a rotatably on the down tube of the suction air duct, but axially displaceably guided shear bushing. This means that the rotational movement introduced via the cam plate is converted by the cam lever in conjunction with the thrust bushing into a thrust movement, the force direction of which runs parallel to the suction air duct, and can then be used directly to control the automatic cover.

As set forth in claims 7 and 8, the sliding bush is connected via a multi-part pressure tube to the automatic cover, wherein a down tube and an upper tube of the pressure tube are connected via a tool-free adjustable clamping threaded device. The clamping threaded device ensures an uncomplicated way an exact adjustment of the length of the pressure tube according to the selected setting height of the lid member according to the invention.

According to claim 9 is also provided in an advantageous embodiment that the down tube of the pressure tube is guided axially displaceably in the clamping block of the suction air duct.
Such a leadership of the down tube in the terminal block ensured in a simple manner and at any setting height safe and clean management of the pressure tube and thus a proper transmission of the thrust bushing introduced via the thrust.

In order to prevent that it may cause damage in blockages of the automatic cover, is also provided according to claim 10 that the top tube of the pressure tube is connected indirectly to the automatic cover.

That is, between the top tube and the automatic cover, a spring element is turned on, which is compressed when a switching operation is initiated via the stepping motor, although the automatic cover is blocked.

Further details of the invention are shown in an embodiment explained below with reference to the drawings.

Fig. 1

eine perspektivische Ansicht auf einige der Spulstellen eines Kreuzspulautomaten, wobei die Spulstellen jeweils mit einem Rundmagazin ausgestattet sind, dessen Saugluftkanal durch ein erfindungsgemäßes Deckelelement verschließbar ist,

Fig. 2

eine Spulstelle eines Kreuzspulautomaten, die mit einem Rundmagazin ausgestattet ist, das das erfindungsgemäße Deckelelement aufweist, in Seitenansicht,

Fig. 3

in einem größeren Maßstab sowie im Detail das erfindungsgemäße Deckelelement nebst zugehörigen Betätigungseinrichtungen,

Fig. 4

das erfindungsgemäße Deckelelement mit Handbetätigungsdeckel und Automatikdeckel im geschlossenen Zustand,

Fig. 5

das Deckelelement gemäß Fig.4 mit heruntergedrücktem Handbetätigungsdeckel und damit geöffnetem Saugluftkanal,

Fig. 6

das Deckelelement gemäß Fig.4 mit aufgestelltem Automatikdeckel und damit geöffnetem Saugluftkanal,

Fig. 7

das Deckelelement gemäß Fig.4 während der Ansteuerung eines blockierten Automatikdeckels.

It shows:

Fig. 1

a perspective view of some of the winding units of a cheese, wherein the winding units are each equipped with a round magazine, the suction air duct is closed by a cover element according to the invention,

Fig. 2

a winding unit of a cheese winder, which is equipped with a round magazine, which has the cover element according to the invention, in side view,

Fig. 3

on a larger scale and in detail the cover element according to the invention together with associated actuating devices,

Fig. 4

the cover element according to the invention with manual actuation cover and automatic cover in the closed state,

Fig. 5

the cover element according to Figure 4 with depressed hand-operated cover and thus opened Saugluftkanal,

Fig. 6

the cover element according to Figure 4 with automatic cover installed and thus opened suction air duct,

Fig. 7

the cover element according to Figure 4 while controlling a blocked automatic cover.

FIG. 1 shows in perspective view some of the numerous winding units 2 of a cheese winder. 1
Such winding units 2 are each equipped with a round magazine 3, which is filled with some fresh spinning heads 4, which are then wound on the winding device 11 to form a cheese 7.
As indicated, the yarn ends 6 of the stored in the round magazine 3 spinning cops 4 in a arranged in the region of the central longitudinal axis of the round magazine 3 suction air duct 13 and are by a cover member 12 which consists of a manual cover 20 and an automatic cover 19 and which closes the suction air duct 13 temporarily mechanically fixed.

The stored in the round magazine 3 spinning cops 4 are successively transferred via a bobbin own Kopsführungseinrichtung 5 in a Abspulstellung II of the respective winding unit 2, in which the spinning cops 4 are wound into a large volume cheese 7, the current thread, as usual, is monitored for thread error out ,

Spooled empty tubes 8 are each discharged into an arranged before the winding units 2, in the transport direction T circulating empty-tube transport device 9, to which in the embodiment, a further transport device, For example, an ascending conveyor 10, adjoins, which transfers the empty tubes 8 to a higher transport level.

As in FIG. 2 indicated, has each of the winding units 2 of the automatic package 1 next to a round magazine 3 for depositing fresh spinning heads 4 and a winding device 11 for winding a package 7 on further Fadenhandhabungs- or thread handling equipment.
Such winding units 2 each have, for example, an electronic thread cleaner 14, a thread splicing device 17 and a thread tensioner 18.
In the yarn splicing device 17, after a spool interruption, for example after a thread break or a controlled thread cleaner cut, the upper thread originating from the cross-wound bobbin 7 and the bobbin thread connected to the spinning cop 4 are again pneumatically connected.
The upper thread is inserted by means of a suction nozzle 15 in the Fadensleiißeinrichtung 17, while the lower thread is prepared by a gripper tube 16.

Since the structure and function of such winding units 2 are generally known, further explanations of such winding units are dispensed with.

Like both in Fig.1 as well as in Fig.2 shown, the yarn ends 6 of the stored in the round magazine 3 fresh spinning cops 4 are each positioned in a suction air duct 13, which is closed by a cover member 12 consisting of a manual operating cover 20 and an automatic cover 19.

The yarn ends 6 of the round magazine 3 held ready for rewinding spinning cops 4 are clamped between the manual operating cover 20 and the automatic cover 19 and thus mechanically fixed.

As in Fig.2 furthermore, each winding unit 2 has a so-called auxiliary gripper 24 which, after a spinning head change, that is, when a spinning cop positioned in the unwinding position II is unwound and replaced by a fresh spinning cop from the round magazine, ensures that the thread strand which extends between the spinning cop 4 positioned on a Kopsaufsteckdorn 25 and the cover member 12, is transferred to the gripper tube 16 of the winding unit 2.

The Figure 3 shows the structure of the cover element 12 according to the invention and the operation of the manual operating cover 20 and the automatic cover 19 in detail.
As can be seen, the suction-air duct indicated overall by the reference numeral 13 consists of a down tube 30 and a top tube 29 which is displaceably guided in the down tube 30.
On the down tube 30, which is fixed with its lower end in a (not shown) housing of the round magazine 3, a clamping block 31 is arranged in the region of the upper end, which defines a defined length of the suction air duct 13 and thus the height of the cover element 12 allows.
That is, by means of the clamping block 31, the extension length of the top tube 29 and thus the installation height of a bearing member 23 attached to the upper end of the top tube 29 can be specified exactly.

At this bearing part 23 are limited by horizontal pivot axes 26 and 27 movable, the automatic cover 19 and the manual operating cover 20 is arranged.

The manual operating cover 20, which has on its upper side 21 from a central suction port 50 outgoing groove-like recess 22 is held by a spring element 28 which is turned on between the bearing part 23 and the underside of the manual operating cover 20 in an initial position in which Manual operating cover 20 rests from below on the positioned in the starting position automatic cover 19, that is, in which a arranged on the automatic cover 19 clamping and sealing web 52 in the groove-like recess 22 of the manual operating cover 20 sums.
The manual operating cover 20 may, as in Fig. 5 shown by the arrow F, by manual force on its surface, against the force of the spring member 28 about the pivot axis 27 are tilted down.
In this position, the central suction port 50 is exposed in the manual operating cover 20, so that the yarn ends 6 fresh spinning cops 4, which were newly deposited in the round magazine 3, sucked into the suction port 50 and mechanically fixed after releasing the manual application of force.

The actuation of the automatic cover 19 in the course of a spinning-head change takes place by means of an electromotive drive, preferably by means of a defined controllable stepping motor 38.
How out Figure 3 can be seen in the (not shown) housing of the round magazine arranged stepper motor 38 is connected via a rotatably locked on its motor shaft pinion 37 with a drive wheel 36 which is rotatably mounted in the housing of the round magazine 3 and equipped with a cam 35.
At this cam 35 is acted upon by a spring element 34, a cam lever 33 which is rotatably mounted on a bearing bush 32 on the down tube 30 of the suction air duct 13. The cam lever 33 has an upwardly directed helical abutment surface 39, which corresponds to a corresponding, downwardly directed helical abutment surface 40 of a thrust bushing 41, which in turn rotationally fixed, but axially displaceable, is arranged on the down tube 30 of the suction air duct 13.
On the thrust bush 41, a two-part pressure tube 42 is supported, wherein in the clamping block 31 axially displaceably guided down tube 43 of the pressure tube 42 is connected to the associated top tube 44 via a tool-adjustable clamping threaded device 45. The top tube 44 is finally connected via a spring element 46 with the automatic cover 19, that, as in Figure 6 shown, a displacement of the pressure tube 42 in the direction of arrow X to pivot the automatic cover 19 about its pivot axis 26 leads, with the result that the clamping and sealing web 52 of the automatic cover 19 of the incorporated in the surface 21 of the manual cover 20 groove-like recess 22 lifted and thus the groove-like recess 22 is released. The groove-like recess 22 is then connected to the suction port 50 of the suction air duct 12 and forms an air and yarn guide channel.

When the circular magazine 3 is further clocked in the course of a spinning cop change to a receiving pocket pitch while a fresh spinning cop 4 is transferred from the round magazine 3 to the unwinding AS of the winding unit 2, slides in the suction port 50 of the suction air duct 13 fixed thread end 6 of the respective spinning cop 4 in the groove-like recess 22 and there, since at the same time the automatic lid 19 has opened a bit, exposed to a relatively strong suction air flow.
The suction air flow ensures that the yarn end 6 of the now arranged on a mandrel 25 spinning cop 4, that forms a thread strand between spinning cop 4 and cover member 12, remains pulled tight or pulled tight and can be passed from a spool's own auxiliary gripper 24 easily to the gripper tube 16 of the winding unit 2.

In the FIGS. 4 to 7 different operating states of the cover element 12 according to the invention are shown.

Figure 4 shows, for example, a closed lid member 12, that is, both the manual operating cover 20 and the automatic cover 19 are in their initial position in which the suction port 50 of the suction air duct 13 is closed.
In this state, the yarn ends 6 of spinning cops 4, which are stored in the round magazine 4, mechanically fixed between the manual operating cover 20 and the automatic cover 19.

Figure 5 shows the lid member 12 at a time at which, for example, by the operator, a force F is placed on the hand-operated cover 20 from above.
The manual operating cover 20 is thereby pivoted, that is, tilted down on the side facing the operating personnel relative to the automatic cover 19.
As can be seen, while the central intake port 50 of the suction air duct 13 is released in the manual cover 20, so that the operator can easily thread the yarn ends 6 of freshly deposited in the round magazine 3 spinning heads 4 in the suction air duct 13.

The FIGS. 6 and 7 show the control of the automatic cover 19, that is, the displacement of the pressure tube 42 by the stepping motor 38th

Normally, the automatic cover 19, as in Figure 6 shown rotated by the top tube 44 of the upward sliding pressure tube 42 about its pivot axis 26.
That is, a arranged on the top tube 44 of the pressure tube 42 spring element 46 pivots the automatic cover 19 about its pivot axis 26 that the clamping and sealing web 52 of the automatic cover 19 is lifted from the groove-like recess 22 of the manual cover 20.
The groove-like recess 22 is thereby pneumatically connected again to the central intake opening 50 of the suction air duct 13 in the manual operating cover 20 and forms an air and yarn guide channel.
In this position, the yarn end 6 of a in the course of a spinning head change from the circular magazine 3 in the unwinding position AS transferred to the winding unit 2 Spinnkopses 4, which has slid into the groove-like recess 22, exposed to a relatively strong suction air flow, which ensures that the thread end always kept tight or pulled tight.

The Figure 7 shows a situation in which the pressure tube 42 and thus the top tube 44 is displaced by the stepper motor 38 upwards, the automatic cover 19 is blocked at this moment but as in Fig. 7 indicated by the arrow B.
In such a case, only the spring element 46 arranged on the top tube 44 is compressed without the automatic cover 19 or the activation mechanism being unduly stressed or even damaged.
That is, by the spring element 46 can be reliably avoided in the event of blocking the automatic cover 19 permanent damage.

Claims (10)

Round magazine for a winding unit of a cheese winder with a suction air duct for fixing the thread ends of stored in round magazine spinning cops and a movably mounted lid member for closing the Saugluftkanals, the lid member is either manually or automatically actuated and mechanically locks the thread ends of the spinning cops in the closed state,
characterized,
in that the cover element (12) consists of a manual actuation cover (20) and an automatic cover (19), which can each be actuated separately and
that in the top (21) of the manual operating cover (20) has a groove-shaped recess (22) is incorporated, which forms a to the suction air duct (13) of the round magazine (3) connected air and thread guide channel, which is closed by the automatic cover (19) , Round magazine according to claim 1, characterized in that the manual operating cover (20) and the automatic cover (19) are arranged on a common bearing part (23) and in each case limited rotatably about a horizontal pivot axis (27 or 26). Round magazine according to claim 2, characterized in that between the bearing part (23) and the manual actuation cover (20), a spring element (28) is turned on, which positions the manual actuation cover (20) in the unactuated state in its initial position. Round magazine according to claim 2, characterized in that the bearing part (23) on the top tube (29) of the telescopically formed Saugluftkanals (13) is fixed, wherein the upper tube (29) via a clamping block (31) adjustable in height on the down tube (30) of the suction air duct ( 13) is arranged. Round magazine according to one of the preceding claims, characterized in that on the down tube (30) rotatably a bearing bush (32) is fixed, on which a cam lever (33) is rotatably mounted, which, acted upon by a spring element (34) defined at one drivable cam plate (35) is applied. Round magazine according to one of the preceding claims, characterized in that the cam lever (33) has a helical contact surface (39) which has a helically shaped contact surface (40) on the down tube (30) rotatably, but axially displaceably guided shear bush (41 ) corresponds. Round magazine according to one of the preceding claims, characterized in that the sliding bush (41) via a multi-part pressure tube (42) to the automatic cover (19) is connected. Round magazine according to claim 7, characterized in that a down tube (43) and an upper tube (44) of the pressure tube (42) via a tool-free adjustable clamping threaded device (45) are connected. Round magazine according to claim 8, characterized in that the down tube (43) of the pressure tube (42) in the clamping block (31) is guided axially displaceable. Round magazine according to claim 8, characterized in that the top tube (44) of the pressure tube (42) via a spring element (46) to the automatic cover (19) is connected.

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