EP1522516B1 - Device for transporting bobbins - Google Patents

Abstract

A textile industry assembly winds a thread onto a spool (2) which is then released from the winder unit (1) for onward transport. the spool is raised by an overhead lift system (27) to a grip unit which is supported by the overhead rail (5) and powered. The rail-mounted sliding unit (7) moves on rollers and is advanced by an electric motor. The lift unit grips are applied by spring-operation and are subsequently released by pneumatic or electrical energy. When the spool is raised to maximum height, the grip is located in line with the mid-point of the spool lifting unit (7). The lift/transport motive power is supplied by electrical or pneumatic power connected either to the rail unit or spool lift/transport unit.

Description

The invention relates to a device for removing coils deposited in front of a coil winder according to the features in the preamble of claim 1.

By the EP 0 620 145 B1 includes a device for transporting bobbins to the prior art, in which recorded by means of a hanging on a rail track displaced driving unit coils, can be moved over long, and also branched transport routes and ultimately stored again. For this purpose, the drive unit is connected to a gripper unit via belts that can be wound up and unwound by motor. The gripper unit comprises a gripper frame and gripper arms which can be applied to the curved surface of a spool in the manner of tongs.

The rail track for the driving unit is designed according to the VDI Guideline 36 43 / C1 as a traveling rail for overhead monorail systems. The driving unit is also adapted accordingly. The gripper unit has several, in pairs each other associated gripping arms, which are movable in the manner of a parallelogram using pneumatic energy. It is envisaged that each individual coil can be detected by a pair of gripping arms. The force for gripping a coil is adjustable as a function of the coil density via a valve for regulating the air pressure on the gripper unit. To provide the pneumatic energy, a pressure vessel is provided on the driving unit, which is connected via coiled compressed air hoses with the gripper unit. The located on the front sides of the gripper frame straps are guided in opposite directions over a winding drum, which is driven by an electric motor.

In the case of several coil winders arranged in a row, which wind up extruded chemical fibers, there is the problem that operators have to move freely in front of the coil winders. From this point of view, it is necessary to transport the coils deposited in front of the coil winders in a height range along the coil winders, which runs at a sufficient distance above the height of the operator.

The device become known in this context according to the DE 44 31 908 A1 has the lack of a large vertical extension. In addition, the coils can only be recorded via precisely adapted domes.

From the FR 1 411 398 A An apparatus for transporting objects on a rail system is also known. In this device, the gripping arms are spring-loaded, so that a secure hold of the objects to be transported is ensured even in the event of a power failure.

Furthermore, the state of the art is the DE 195 38 392 A1 to name a device for handling coils. The device is moved on a track of a crane-like device. It is provided along the track sliding trolley. The bridge of the device runs with rollers on the track.

On this basis, the invention is based on the object to show a device for removing coils, which is designed to be simple and reliable in particular and even with longer linear travels as accurate as possible Positioning based on a cost-effective and low-maintenance drive concept allows.

This object is achieved with the features specified in claim 1.

The driving unit is designed as a self-propelled. It has an electric motor, which drifts on a drive roller, with which the driving unit can move along the rail track. In contrast, a traction drive in which a toothed belt is laid along the rail track with which a drive roller in the form of a toothed roller meshes is more advantageous.

Of particular importance in the context of the invention is the fact that the gripping legs of the gripper unit can be applied by mechanical springs to the surface of a coil. The gripper legs can detect a coil on the front sides. On the other hand, it is more advantageous if the gripping arms engage the convexly curved surface. In this way, the clamping contact of the gripper arms is always ensured with a coil. To release the gripper legs of a coil pneumatic or electrical energy can be used. Accordingly, then the aggregates are formed on the gripper unit, which ensure the lifting of the gripping legs of the surface. If this energy fails, the gripping arms are automatically shifted by the mechanical springs in the clamping position.

The transport of the bobbins is carried out only in the raised position of the gripper unit. For this purpose, the invention provides that the gripper unit, which is coupled in a distance-variable manner to the drive unit by a plurality of flexible lifting means in particular, is position-centered in the raised position in the drive unit. The coils to be transported are thereby securely held.

Since the drive unit is self-propelled, according to the invention, one end of the rail track, e.g. from a control unit, flexible supply lines for supplying electrical and / or pneumatic energy to the driving unit and the gripper unit laid. The other ends of the supply lines are preferably coupled to a connection on the drive unit. But you can also be led directly to a consumer. The driving unit can be easily displaced in this way over the entire track formed by the rail track.

According to the invention, it is conceivable that the displacement of the coils from a coil winder to a further transporting device can be controlled specifically by hand. Suitably, however, the process is integrated into a programmable logic controller, which initiates transport in response to the coils provided to the coil winder.

It is envisaged that the drive roller is designed as a toothed roller and engages positively and non-positively into a Ω-shaped loop of a toothed belt which is fixed along the rail track and displaces with the drive unit. The Ω-shaped loop of the toothed belt is formed by the drive roller and by two provided on the drive pulley pulleys. The sprocket meshes with the timing belt in principle slip-free and thus ensures proper positioning of the drive unit at each point of the rail track.

According to the features of claim 2, the driving unit is forcibly guided on two rails which are C-shaped in cross-section and are open at the bottom. The rails are attached to a support frame adjustable. The driving unit has for this purpose about horizontal axes rotating rollers in both rails and rotating about vertical axes support rollers in only one rail.

Due to the helical configuration of the supply lines between the driving unit and the gripper frame and between the lifting means for supplying electrical and / or pneumatic energy to the gripper unit (claim 3) are the supply lines in each altitude of the gripper unit protected between the lifting means. Your supply function is guaranteed at all times.

Although the invention allows ropes or chains as a lifting means, according to claim 4, the lifting means are advantageously formed by flat belts whose broad sides extend in planes transverse to the direction of travel of the driving unit. The fact that the significantly greater width than thickness having flat belts extend with their broad sides transverse to the direction of travel of the driving unit, the vibration behavior is minimized transversely to the direction of travel. The material of the flat belts may be formed on a synthetic or textile basis or combined yarns of both types.

In each case two gripping arms of the gripper unit, which are assigned to one another in pairs opposite one another, can be lifted off a coil in accordance with claim 5 by a pneumatic cylinder. The pneumatic cylinder is embedded in the gripper frame and is connected via a helical supply line between the lifting means with the driving unit and the local connection in connection.

Instead of a pneumatic cylinder can be provided in accordance with claim 6 but also an electrically acted linear drive in any embodiment for lifting the gripper legs of a coil. Supplying the gripper unit with pneumatic energy then ceases.

The displacement of the gripper arms from the clamping to the open position and vice versa is advantageously carried out with the features of claim 7. The arcuate configuration of the gripping legs takes into account the convex surface contour of the coils. Their planar design increases torsional rigidity. The gripping legs are coupled with web-like adjusting legs. These guide rollers are assigned at least indirectly, which summarize horizontally displaceable in a vertically adjustable forced operation. This forced operation is applied upwards by the mechanical springs. This may in particular be arranged in Carrée-form helical compression springs. Down the forced operation can be acted upon by a pneumatic cylinder or an electric linear drive. For this purpose, the piston rod of the pneumatic cylinder fixed to the housing on the gripper frame or the adjusting rod of the linear drive is coupled to the positive guide.

Due to the fact that several pivoting positions are provided according to claim 8 on the gripper arms, different coil diameter rich can be taken into account in a simple manner and to the effect that the radial displacement of the gripper arms can be matched to the respective coil diameter range.

The safety edges according to claim 9 ensure that contact of the safety edges, for example, with an operator, immediately causes the displacement of the gripper unit in the raised position in the driving unit. Damage to the gripper unit or accidents to the operator are therefore largely excluded.

Instead of the electro-sensory monitored and provided with air chambers safety edges, it is also conceivable according to claim 10 that along the free lower edges of the gripping arms electronic bumpers are provided.

Are the gripper unit associated with at least two flat belts as lifting means, the lower ends of the straps are advantageously attached laterally of the gripper frame according to claim 11.

However, it is also conceivable that further lifting means can be attached to the front side of the gripper frame according to claim 12.

The claim 13 provides that each flat belt is associated with a mounted in the drive unit winding drum, wherein a plurality of winding drums are synchronously driven by an electric motor in the drive unit. Such a synchronous drive can preferably be carried out with the aid of toothed belts and corresponding toothed rollers, which ensure a slip-free transmission of the drive energy.

For the purpose of perfect position securing of the gripper unit in the raised position in the drive unit, the gripper frame according to claim 14 has an upwardly extending centering mandrel and a receiving sleeve for the centering mandrel is provided in the drive unit. With at least two lifting means, the centering mandrel then extends between the lifting means.

A particularly advantageous embodiment for the supply of electrical and / or pneumatic energy to the driving unit is seen in the features of claim 15. Thereafter, the supply lines are embedded in a tab-like energy chain, which is caterpillar-like stored next to the rail track. This energy chain secures the location of the supply lines and protects them against damaging external influences.

Suitably, the energy chain according to claim 16 can be stored in an upwardly open U-shaped channel. This channel extends next to a rail of the rail track.

According to the features of claim 17, the driving unit is covered by a hood made of sheet steel or plastic. It has a downwardly open concave receiving area for the gripper unit in its raised position. The hood protects each transported coil against external influences.

Finally, it is advantageous according to claim 18 that the driving unit, in particular the hood, is associated with an airbag which can be displaced under the gripper unit. This parachute provides an additional safety feature to prevent the coils from falling when, for some reason, the function of the gripper legs should fail. The fishing umbrella can be designed to be pivotable or displaceable.

Figur 1

im Schema einen Spulenwickler in der Seitenansicht zusammen mit einer Vorrichtung zum Abtransport von Spulen;

Figur 2

in vergrößerter konstruktiver Darstellung die Transportvorrichtung der Figur 1 in zwei Betriebspositionen in Richtung des Pfeils 11 gesehen;

Figur 3

in nochmals vergrößerter Darstellung die Transportvorrichtung zum Abtransport von Spulen der Figur 2 in der angehobenen Transportposition;

Figur 4

eine Greifereinheit der Transportvorrichtung der Figuren 1 bis 3 in abgesenkter Position;

Figur 5

eine Ansicht auf die Darstellung der Figur 3 entlang der Linie V-V in Richtung der Pfeile Va gesehen und

Figur 6

eine Draufsicht auf die Darstellung der Figur 5 in Richtung des Pfeils VI gesehen.

The invention is explained in more detail with reference to an embodiment shown in the drawings. Show it:

FIG. 1

in the diagram, a coil winder in side view together with a device for removing coils;

FIG. 2

in an enlarged constructive representation of the transport device of FIG. 1 seen in two operating positions in the direction of arrow 11;

FIG. 3

in a further enlarged view of the transport device for the removal of coils of FIG. 2 in the raised transport position;

FIG. 4

a gripper unit of the transport device of FIGS. 1 to 3 in lowered position;

FIG. 5

a view on the representation of FIG. 3 along the line VV in the direction of the arrows Va seen and

FIG. 6

a plan view of the representation of FIG. 5 seen in the direction of the arrow VI.

With 1 is in the FIG. 1 a coil winder for winding extruded chemical fibers. Several such coil winders 1 are arranged side by side in series. From a coil winder 1 finished coils 2 are stored on a table 3 in front of the coil winder 1. From there they are picked up with a transport device 4 and moved to a further transport unit not shown.

In the FIG. 1 only illustrated in the scheme device 4 for removing the coil 2 is in the FIGS. 2 to 6 shown in more detail.

On a suspended track 5 with two cross-sectionally C-shaped, downwardly open rails 6 (Fig. FIG. 5 ) is a driving unit 7 displaced. On the driving unit 7 consoles are attached 8 m with upwardly directed longitudinal webs 9 ( FIG. 5 and 6 ). These longitudinal webs 9 carry on both sides about horizontal axes rotating rollers 10, which are supported on the inside of the facing horizontal leg of the rails 6. On one of the longitudinal webs 9 are also provided in front of the rollers 10 about vertical axes rotating support rollers 11 which roll on the inside of the vertical leg of the rails 6.

The drive unit 7 has an electric motor 12 arranged with its longitudinal axis transversely to the direction of travel FR of the drive unit (FIG. FIG. 6 ). The electric motor 12 is connected in a manner not further illustrated via a supply line to a terminal 13 on the driving unit 7. This terminal 13 is connected to a tab-like energy chain 14 ( Figures 2-6 ). Starting from the driving unit 7, the energy chain 14 can be placed in an arcuate manner in an upwardly open U-shaped channel 15, which extends parallel to the rail track 5. The channel 15 is supported by the support frame 16, which also carries the rail track 5. In two along the rail track 5 moving along driving units 7, as in the FIG. 5 represented, two energy chains 14 are stored in two grooves 15.

Consequently, the supply line to the electric motor 12 extends via the connection 13 and via the energy chain 14 to a control unit, which is not shown in greater detail at the end of the rail track 5.

The electric motor 12 has a drive roller 17 in the form of a toothed roller. This drive roller 17 engages in a displacing with the driving unit 7 Ω-shaped loop 18 of a fixed along the rail track 5 toothed belt 19 a positive and non-positive. For this purpose, the toothed belt 19 is guided above the drive roller 17 via two deflection rollers 20 ( Figures 2 . 3 . 5 and 6 ).

A for the activation of the electric motor 12 electrical control line is also laid between the electric motor 12 and the end of the rail track 5 located control unit via the energy chain 14.

The driving unit 7 further comprises two mutually spaced winding shafts 21, each with two mutually offset in the longitudinal direction of the winding shafts 21 winding drums 22 ( Figures 3-6 ). The winding shafts 21 extend transversely to the direction of the direction FR. The two winding shafts 21 are synchronously connected to each other at one end by a toothed belt 23 rotatably. At the other end of a winding shaft 21, this is connected via a toothed belt 24 to the output roller 25 of a further electric motor 26. This electric motor 26 is also connected via unspecified supply and control lines to the control unit in connection. The supply and control lines are routed via the connection 13 and the energy chain 14 to the control unit.

In the FIG. 5 the electrical supply and control lines are generally indicated by VL or STL.

The winding drums 22 are used for winding and unwinding of lifting means 27 in the form of flat belts. These flat belts 27 have a significantly smaller thickness D than width B (FIG. FIGS. 1 and 4 ). They are guided by the winding drums 22 via two deflecting rollers 28 which are arranged above the winding shafts 21 and which are adjustable in the longitudinal direction of the driving unit 7.

The winding drums 22 facing away from the ends of the flat belts 27 are laterally attached to a gripper frame 29 of a gripper unit 30. The gripper frame 29 serves for the pivotable mounting of four gripping arms 31. These arc-shaped and flat gripping arms 31 are coupled to web-like adjusting legs 32 (FIG. FIG. 4 and 5 ). The adjusting legs 32 are associated with guide rollers 33, which hold horizontally displaceable in two vertically adjustable positive guides 34. These positive guides 34 are upwardly displaceable by mechanical springs 35 in the form of spring assemblies with helical compression springs, while they are placed down under the influence of pneumatic cylinders 36.

The supply lines PVL to the two pneumatic cylinders 36 between in each case two opposing gripping arms 31 are guided in a helical configuration between the flat belts 27 from the driving unit 7 to the gripper unit 30 ( Figures 2 and 4 ). At the driving unit 7, the supply lines PVL, as well as the electrical supply and control lines VL, STL via the terminal 13 and the energy chain 14 are guided to the control unit. In the FIG. 5 are the pneumatic supply lines PVL indicated.

How the particular FIG. 4 can be seen, a total of three pivotal positions 37 are provided on the gripping arms 31. These are used to adapt to the diameter ranges of different sized coils 2 (see FIG. 3 ).

Along the free lower edges 38 of the gripping arms 31 equipped with outwardly closed air chambers and electro-sensory monitored switching strips 39 are provided ( FIG. 4 and 5 ).

The electrical control lines to the switching strips 39 are corresponding to the supply lines PVL in the Figures 2 and 4 provided in a helical configuration between the driving unit 7 and the gripper frame 29.

From the gripper frame 29 extends centrally a centering pin 40 upwards. In the driving unit 7, a receiving sleeve 41 is provided for the centering pin 40. When the gripper unit 30 is in the raised position according to FIG FIG. 3 , It is securely oriented on the driving unit 7 on the centering pin 40 and the receiving sleeve 41.

The entire drive unit 7 is surrounded by a hood 42. The hood 42 has a downwardly open concave receiving area 43 for the gripper unit 30.

In the FIG. 3 is still indicated that the hood 42 may be provided with a movable under the gripper unit 30 airbag 44. This umbrella 44 is hinged or slidably associated with the hood 42.

Is on a coil winder 1, a coil 2 or more coils 2 provided, is carried to the control unit, a signal that causes the driving unit 7 to the relevant coil winder 1 is displaced. The gripper unit 30 is located during displacement of the driving unit 7 basically in the raised position according to the Figures 2 . 3 and 5 ,

At the approached coil winder 1, the gripper unit 30 is then lowered, wherein the gripping arms 31 according to the representation of Figures 2 and 4 Grasp the coils 2 on the circumference pincers. After detecting the bobbins 2, the gripper unit 30 is in the raised position according to the FIGS. 2 to 5 relocated. Subsequently, a displacement of the driving unit 7 takes place up to the position where the coils 2 are transferred to a device for onward transport.

From the Figures 5 and 6 is still recognizable that the driving unit 7 may be associated with a signal lamp 45. This signal lamp 45 may be coupled to an acoustic signal.

Reference numerals:

1 -

coil winder

2 -

Do the washing up

3 -

Table f. 2

4 -

transport device

5 -

rail track

6 -

Rails v. 5

7 -

driving unit

8th -

consoles

9 -

longitudinal webs

10-

castors

11 -

support rollers

12 -

E-Motor

13 -

Connection to 7

14 -

energy chain

15 -

gutter

16 -

shoring

17 -

Drive roller on 12

18 -

Loop v. 19

19 -

toothed belt

20 -

Pulley f. 19

21 -

winding shafts

22 -

reel drums

23 -

toothed belt

24 -

toothed belt

25 -

Drive roller v. 26

26 -

E-Motor

27 -

lifting means

28 -

deflection rollers

29 -

Gripper frame v. 30

30 -

gripper unit

31 -

Gripping leg v. 30

32 -

parking leg

33 -

guide rollers

34 -

forced control

35 -

mechanical springs

36 -

pneumatic cylinder

37 -

pivot positions

38 -

Edges v. 31

39 -

Safety Edges

40 -

centering

41 -

receiving sleeve

42 -

Hood

43 -

Recording area in 42

44 -

Fang screen

45 -

Warning light

FR -

Direction of travel v. 7

VL -

supply lines

STL -

control lines

D -

Thickness v. 27

B -

Width v. 27

PVL -

pneumatic supply lines

Claims (18)

1. Device for removal of coils (2) deposited in front of a coil winder (1), which device has a travel unit (7) which can be displaced in a suspended manner on a rail track (5) laid in front of several coil winders (1) and a gripper unit (30), which is connected to the travel unit (7) via at least one lifting means (27) which can be wound up and cast off in a motorised manner, with a gripper frame (29) and at least two gripping limbs (31) which can be placed in a pincer-like manner on the surface of a coil (2), wherein the travel unit (7) has a travel drive comprising an electric motor (12) and a driving roller (17) which rolls off at least indirectly on the rail track (5), characterised in that the gripping limbs (31) of the gripper unit (30) can be placed on the surface of a coil (2) by mechanical springs (35) and can be raised from the surface using pneumatic or electrical energy, wherein the gripper unit (30) is positionally centred in the raised position in the travel unit (7), wherein the supply lines (VL,STL,PVL) are flexibly embodied for the supply of electrical and/or pneumatic energy to the travel unit (7) and to the gripper unit (30) and extend between an end of the rail track (5) and a connection (13) to the travel unit (7), wherein the driving roller (17) is embodied as a toothed roller and engages positively and non-positively in an omega-shaped loop (18), which moves with the travel unit (7), of a toothed belt (19) fixed along the rail track (5).
2. Device according to Claim 1, characterised in that the travel unit (7) is restrained in a rolling manner on two rails (6) which are C-shaped in cross-section and are open towards the bottom.
3. Device according to Claim 1 or 2, characterised in that the supply lines (VL,STL,PVL) for the supply of electrical and/or pneumatic energy to the gripper unit (30) extend in a helical configuration between the travel unit (7) and the gripper frame (29) and between at least two lifting means (27).
4. Device according to one of Claims 1 to 3, characterised in that the lifting means (27) are formed by at least two flat belts whose broad sides extend in planes running transverse to the direction of travel (FR) of the travel unit.
5. Device according to one of Claims 1 to 4, characterised in that the gripping limbs (31) can be raised from a coil (2) by a pneumatic cylinder (36).
6. Device according to one of Claims 1 to 4, characterised in that the gripping limbs (31) can be raised from a coil (2) by a linear drive which can acted upon electrically.
7. Device according to Claim 5 or 6, characterised in that the gripping limbs (31) are embodied arc-shaped and two-dimensionally and are coupled to web-like adjusting limbs (32), wherein guide rollers (33) assigned to the adjusting limbs (32) engage in a horizontally displaceable manner in a vertically adjustable restricted guidance (34) which can be acted upon upwards by the mechanical springs (35) and downwards by the pneumatic cylinder (36) or the linear drive.
8. Device according to one of Claims 1 to 7, characterised in that several pivot positions (37) are provided on the gripping limbs (31).
9. Device according to Claim 7 or 8, characterised in that safety strips (39) which are fitted with air chambers sealed to the outside and are monitored by electronic sensors are provided along the free lower edges (38) of the gripping limbs (31).
10. Device according to Claim 7 or 8, characterised in that electronic bumpers are provided along the free lower edges (38) of the gripping limbs (31).
11. Device according to one of Claims 4 to 10, characterised in that the lower ends of the flat belts (27) are fastened laterally of the gripper frame (29).
12. Device according to one of Claims 1 to 11, characterised in that further lifting means (27) are fastened on the front side of the gripper frame (29).
13. Device according to one of Claims 4 to 12, characterised in that a winding drum (22) mounted in the travel unit (7) is assigned to each flat belt (27), wherein several winding drums (22) are synchronously driven by an electric motor (26) in the travel unit (7).
14. Device according to one of Claims 1 to 13, characterised in that the gripper frame (29) has a centring mandrel (40) which extends upwards and a receiving sleeve (41) for the centring mandrel (40) is provided in the travel unit (7).
15. Device according to one of Claims 1 to 14, characterised in that the supply lines (VL,STL,PVL) for the supply of electrical and/or pneumatic energy to the travel unit (7) are embedded in a link-type energy chain (14) which can be deposited next to the rail track (5).
16. Device according to Claim 15, characterised in that the energy chain (14) can be deposited in a U-shaped channel (15) which is open towards to the top.
17. Device according to one of Claims 1 to 16, characterised in that the travel unit (7) is surrounded by a hood (42) which has a concave receiving region (43) which is open towards the bottom for the gripper unit (30).
18. Device according to one of Claims 1 to 17, characterised in that a collecting screen (44) which can be displaced under the gripper unit (30) is assigned to the travel unit (7).

Images