EP0863098B1 - Device for the handling of units - Google Patents

Description

The invention relates to a device for handling bobbins from, in particular, packaging material or cigarette paper with a central opening formed by a bobbin core into which a supporting tongs of a handling unit with adjustable clamping elements for lifting and transporting the bobbin enters.

A handling device for lifting and transporting reels is known from EP 0 188 787. A gripping member is provided with a downwardly directed support pin which enters an (upright) center opening of the reel. On the circumference of the cylindrical support pin clamping elements are mounted, which are movable in the radial direction, that is to the outside for frictional engagement with the reel in the region of the center opening.

The invention has for its object to provide a support unit for handling reels, which ensures increased security when detecting and lifting the reel, even with reels with higher weight.

To solve this problem, the device according to the invention is characterized in that the existing of rigid material, in particular plastic or metal Bobinenkern on the inner surface projections and / or depressions which cooperate positively with the clamping elements or holding members of the trunnion, in particular at least one circulating around Groove, enter positively in the clamping web in the extended position with projections.

In the invention, therefore, the bobbin is primarily ensured by positive engagement of the clamping members or clamping webs with projections in recesses of the bobbin case, in conjunction with non-positive holding action.

Further features of the invention relate to actuators for the clamping webs.

Furthermore, as a special feature of the invention, an additional backup for the bobbins on the support pin provided, namely a movable, namely in particular pivotable holding member, which is movable after receiving one or more bobbins by a support pin against the lower or outer bobbin, this additional Holding member on the lower or outer bobbin / Bobinenkern bear or at a distance from this can be positioned as a backup.

Further features of the invention relate to the design of the trunnion and the lifting and delivery unit.

Fig. 1

einen Teil eines Hub- und Förderaggregats für Bobinen in Seitenansicht,

Fig. 2

eine Einzelheit des Aggregats gemäß Fig. 1 in Seitenansicht, bei vergrößertem Maßstab,

Fig. 3

einen Tragzapfen in einer Bobine im Vertikal schnitt,

Fig. 4

einen Innenbereich einer Bobine im Vertikalschnitt, bei stark vergrößertem Maßstab,

Fig. 5

einen unteren bzw. Endbereich des Tragzapfens im Vertikalschnitt, in vergrößertem Maßstab,

Fig. 6

einen Tragzapfen im Horizontalschnitt.

Exemplary embodiments are explained in more detail below with reference to the drawings. It shows:

Fig. 1

a part of a lifting and conveying unit for bobbins in side view,

Fig. 2

a detail of the unit of FIG. 1 in side view, on an enlarged scale,

Fig. 3

cutting a trunnion vertically in a bobbin,

Fig. 4

an interior of a bobbin in vertical section, at a greatly enlarged scale,

Fig. 5

a lower or end portion of the trunnion in vertical section, on an enlarged scale,

Fig. 6

a trunnion in horizontal section.

The examples and details shown in the drawings are concerned with the handling of bobbins 10 in the field of cigarette technology. These reels 10 may be wound webs of packaging material, e.g. B. Stanniol act (Figure 3). The reel 10 of FIG. 3 consists of a double-wide web. Fig. 1, however, shows bobbins 10, which are relatively narrow and consist for example of cigarette paper.

The bobbins 10 have a central, central Bobinenkern 11. This can consist of a pulp material. In the present embodiments, however, the Bobinenkerne 11 are formed of a solid, rigid material, for. B. plastic.

The cylindrical bobbin core 11 carries on its outer circumferential surface 12, the wound material web. A (cylindrical) inner surface 13 is provided with projections and / or depressions. In the embodiment according to FIGS. 3 and 4, a groove 14 running around is formed in the lower region of the bobbin core 11 or one end thereof, which serves for (positive) attachment of gripping or holding members. The groove 14 is here trapezoidal in cross-section formed with running around, upper and lower inclined surfaces 15 and 16. At a corresponding storage of the reel 10 upper edge of the bobbin core 11 is a conical, funnel-shaped end surface 17 is formed, which introduces retaining members in the Bobbin core 11 facilitates. On the opposite side a corresponding mating surface 18 is formed as a boundary of the bobbin core 11. The mating surface 18 is part of a projection of the bobbin core 11, which projects beyond the region of the wound web and, when stacking bobbins 10 arranged one above the other, effects an automatic centering of the adjacent bobbins 10 in the region of the bobbin cores 11.

For handling, namely lifting and conveying bobbins 10, a handling unit 19 is provided. This is here part of a movable conveyor (not shown), in particular an overhead conveyor, which is movable on elevated railway tracks of a workshop. The handling unit 19 here consists of (three) upwardly diverging telescopic arms 60, which are hinged at the bottom to a common support plate 20. At this turn, (indirectly) a downwardly directed support pin 21 is mounted for detecting single or multiple bobbins 10. The handling unit 19 is preferably formed in the manner described in US 5,562,393 way.

The trunnion 21 is used to engage a reel 10 (or more superimposed reels 10) in one through the bobbin core 11 formed central opening 22 introduced. The substantially cylindrical support pin 21 is dimensioned so that the outer diameter is slightly smaller than the inner diameter of the opening 22nd

Within the opening 22 or within the Bobinenkerns 11 of the support pin 21 is releasably anchored, such that the reel 10 can be lifted by the support pin 21. For this purpose, laterally, ie in the transverse axial direction of the support pin 21, holding members can be extended, which form a positive and / or positive connection with the Bobinenkern 11.

In the present embodiment, along the circumference of the support pin 21 a plurality of (three) elongated clamping members, namely clamping webs 23 are provided. The clamping webs 23 are part of a cylindrical, tubular pin body 24 forming the supporting pin 21. The clamping webs 23 each sit with slight play in upright slots 25 extending in the longitudinal direction of the supporting pin 21.

The elongated clamping webs 23 are extended transversely for detecting a reel 10, so that they protrude beyond the lateral surface of the pin body 24. As a result, the clamping web 23 comes in a (upper) area under frictional engagement with the inner surface 13 of the Bobinenkerns 11. In addition, a positive connection between the clamping web 23 and Bobinenkern 11 is provided. Sideways protrusions 26 of the clamping webs 23 enter positively into the groove 14, in the present case, under contact with the upper inclined surface 15. The projections 26 are attached to the lower ends of the clamping webs 23. For depositing a transported reel 10, the clamping webs 23 are moved back inwards into a starting position in which they do not protrude beyond the contour of the trunnion 21, including the protrusions 26.

The actuation of the clamping webs 23 takes place from the interior of the hollow support journal 21. Each clamping web 23 is supported with a plurality of tabs 27, 28, 29 in the interior of the support pin 21. The at each end hingedly mounted tabs 27, 28 and 29 form a parallelogram, which causes a parallel displacement of the clamping web 23 to the outside or inside.

The lower, relatively short tabs 28, 29 are supported on transversely directed, inner intermediate walls 30, 31 of the support pin 21. The tabs 28 and 29 are dimensioned and positioned so that when lifting a reel 10 a self-clamping effect is created by the weight of the reel 10. As can be seen in particular from Fig. 3, for this purpose, the tabs 28, 29 in the support position under a very acute angle slightly inclined from the inside to the outside upwards, at least so that the tabs 28, 29 can not be moved away under the weight of the reel 10 via a dead center position.

The upper tab 27 is mainly used for actuation, namely extension and retraction of the clamping web 23. Within the support pin 21, an actuator is provided for this purpose. For this purpose, the (three) tabs 27 are arranged on a common actuator, namely on a pressure plate 32. This is located at the (lower) end of a piston rod 33 which in turn in the axial direction, ie in the upward and downward direction, with the pressure plate 32nd is displaceable. By moving down the pressure plate 32, the (longer) tabs 27 are applied in a spreading sense, with the result that the clamping webs 23 are moved to the outside. By upward movement of the pressure plate 32 results in the opposite movement.

The pressure plate 32 can be acted upon by a pressure member to carry out a downward spreading or actuating movement. This is in the present case a (preloaded) helical compression spring 34. This is positioned on the piston rod 33 and supported on the bottom of the pressure plate 32 and on top of a fixed support bearing 35. The piston rod 33 can be slidingly moved through the support bearing 35, namely upon compression of the compression spring 34th

The clamping webs 23 are thus moved by the compression spring 34, so by an external energy supply, in particular a pressure medium, independent organ in the spread position. For return movement into the starting position is a (pressure medium) cylinder 36, in particular a pneumatic cylinder. This is pressurized with compressed air, such that the pressure plate 32 under Compressing the compression spring 34 is raised and the clamping webs 23 are thereby moved back to the starting position.

A monitoring device, namely an initiator 69 is disposed in the region of an upper transverse wall 37 of the support pin 21 and protrudes in a certain relative position in the support pin 21, such that an error signal is generated when the pressure plate 32 for receiving a reel 10 and after releasing is not moved down by the cylinder 36 by the compression spring 34, so if there is an error with respect to the detection of a reel 10.

The movement of the trunnion 21 is automatically controllable, such that the support pin 21 is aligned exactly to the opening 22 for receiving a reel 10. For this purpose, a control unit is housed in the lower region of the supporting journal 21, namely in a lower chamber divided by the intermediate wall 30. This works with a camera 38, the lens 39 is positioned below or at the end in the trunnion 21. In the present embodiment, the lens 39 is seated in a downwardly open recess 40 of the trunnion 21st

The camera 38 detects during the working movement of the handling unit 19, the position of the male reel 10. Expediently, the camera 38 is thereby aligned with the image of the Bobinenkerns 11. This can be colored for this purpose. The images taken by the camera 38 are processed via an electronic unit 41 and fed via an electrical line 42 to a central evaluation unit, outside of the support pin 21. The line 22 is connected via a plug 43 to the electronic unit 41.

The device or the support pin 21 is associated with a plurality of securing members, which preclude erroneous handling. In particular, it is about the consideration of any misalignments of the support pin 21 relative to the reel 10th

At the free or lower end of the support pin 21, a mechanical feeler is arranged, which causes a fault signal at a staggered to the opening 22 position of the support pin 21. The feeler is a baffle 44 which is against elastic pressure relative to the support pin 21 in the axial direction, ie in the support pin 21 in, displaceable. The baffle 44 is supported on the housing of the support pin 21 via supporting springs 45, and on the lower partition wall 31 to guide the baffle 44 serve several, namely three guide rods 46th 47, which are distributed along the circumference of the impact body 44. The support springs 45 are seated on the guide rods 46, 47. These can slide in corresponding recesses of the impact body 44, so that it can be displaced into the recess 40 by compressing the support springs 45 when the free end or the free edge of the impact body 44 loaded becomes.

In the initial position of the baffle 44 projects beyond the support pin 21 also. A shoulder 48 of the impact body 44 rests against a stop 49 of the trunnion 21.

To generate an error signal, the guide rod 46 is extended upward into the interior of the trunnion 21 as an actuator. The guide rod 46 extends to the intermediate wall 30. On the underside of the same a contactless feeler is arranged, namely an initiator 50. A thickening of the guide rod 47 cooperates with the switching element or initiator 50, such that upon an upward movement into the position As shown in FIG. 3 and FIG. 5, a switching signal is generated.

The support pin 21 is movably mounted on the handling unit 19 as a whole. The pot-shaped upper transverse wall 37 as part of the trunnion 21 is movably mounted on the handling unit 19, namely on the support plate 20. The trunnion 21 or the transverse wall 37 can take an inclined position to the handling unit 19 or to the support plate 20 through the selected compound. This generates an error signal.

In the present example, the transverse wall 37 is connected to the support plate 20 via support bolts 51 for this purpose. The support bolts 51 are fixedly connected at the bottom with the transverse wall 37, but displaceable in the longitudinal direction at the opposite end corresponding holes 52 of the support plate 20 stored. The support pin 21 can thereby - be raised relative to the support plate 20 - with the transverse wall 37, wherein the support pins 51 are moved upwards in the holes 52. The normal position shown in Fig. 3 is secured by compression springs 53 which are supported on the transverse wall 37 on the one hand and the support plate 20 on the other. A displacement of the support pin 21 relative to the support or support plate 20 leads to the actuation of a switching element, namely an initiator 54 which cooperates with a arranged on one of the support pin 51 switching lug 55.

The relative movement is limited by a cover 56 on top of the transverse wall 37. On the cover 56, a spacer ring 57 is mounted, whose opening is larger than the outer periphery of the support plate 20 so that it can dip into the spacer ring 57 when the trunnions 21st is set incorrectly.

The support pin 21 is designed so that with appropriate dimensions, a plurality of bobbins 10 can be added simultaneously (Fig. 1). The trunnion 21 enters the common aperture 22 formed by the overlying and centered reels 10. In the present embodiment, the dimensions are given so that in the region of a lower bobbin 10 of the bobbin stack, the projections 26 of the clamping webs 23 enter into a groove 14 formed in the manner described. Of the plurality of bobbins 10, therefore, only the lower is positively detected, while the overlying are frictionally held by the clamping webs 23.

The handling unit 19 is provided as a further special feature with an (additional) backup to prevent unwanted dropping of the bobbins 10 from the support pin 19. For this purpose, a movable support member is provided, which is connected to the handling unit 19 and which is movable after receiving one or more bobbins 10 by a support pin 21 against the underside of the bobbins 10 and against the free end of the support pin 21.

In the embodiment of FIG. 1, a support leg 58 is provided, which is connected via a pivot arm 59 with the handling unit 19, namely with a telescopic part 60. Side of the telescopic part 60, a holder 61 is attached. At this, the pivot arm 59 is mounted in a pivot bearing 62. To perform pivotal movements is a motor 63 with gear 64th

To support or secure the bobbins 10 on the support pin 21, the holding member, namely the support leg 58 is pivoted from an upper initial position by the pivot arm 59 in the position shown in Fig. 1 below the bobbins 10 and the support pin 21. When the bobbins 10 undesirably descend on the trunnion 21, falling down by the support leg 58 is avoided.

Another special feature is that on the support leg 58, a switching member is arranged, which triggers an error signal when the bobbins 10 lower this switching device. It is an elastically mounted circuit board 65 which is arranged on the support leg 58 and is moved downward against the pressure of springs 66 when a (lower) reel 10 or its Bobinenkern 11 due to unwanted relative position or displacement on the support pin 21 the Switching plate 65 applied.

The device described may be configured in an alternative manner. Thus, 21 holding members may be attached to the support pin, which engage after insertion of the support pin 21 in the opening 22 on the underside of the reels 10 and the Bobinenkerns 11. It is useful or necessary to store the bobbins 10 accordingly, z. B. on a pallet, such that the described gripping members can enter into a corresponding space below the bobbins 10 and the Bobinenkerns 11. The bobbins 10 may be positioned on documents, namely mats, plates or the like, which have an enlarged hole in the region of the opening 22, which creates the corresponding free space below the Bobinenkerns 11.

LIST OF REFERENCE NUMBERS

10

reel

11

reel core

12

lateral surface

13

palm

14

groove

15

sloping surface

16

sloping surface

17

end face

18

counter surface

19

handling unit

20

support plate

21

supporting journal

22

opening

23

clamping web

24

journal body

25

slot

26

head Start

27

flap

28

flap

29

flap

30

partition

31

partition

32

printing plate

33

piston rod

34

compression spring

35

support bearings

36

cylinder

37

partition

38

camera

39

lens

40

deepening

41

unit

42

management

43

plug

44

baffle

45

support spring

46

guide rod

47

guide rod

48

paragraph

49

attack

50

initiator

51

support bolts

52

drilling

53

compression spring

54

initiator

55

Schaltfahne

56

cover

57

spacer

58

support legs

59

swivel arm

60

telescopic arm

61

bracket

62

pivot bearing

63

engine

64

transmission

65

circuit board

66

feather

67

connecting bolts

68

mother

69

initiator

Claims (8)

1. An apparatus for handling reels (10) of in particular packaging material or cigarette paper having a central opening (22) that is formed by a reel core (11) and which is entered by a bearing journal (21) of a handling unit having holding members, in particular clamping webs, which can be displaced transversely to the longitudinal axis for the purpose of lifting and transporting the reel (10), characterized in that the reel core (11) consisting of a rigid material, in particular plastic or metal, has on its inner surface (13) projections and/or indentations which interact in a positive-locking manner with the holding members or clamping webs of the bearing journal (21), in particular at least one groove (14) which runs all around and into which the holding members or clamping webs (23) enter with projections (26) in a positive-locking manner in the extended position.
2. Apparatus according to Claim 1, characterized in that the holding members of the bearing journal (21), in the particular the clamping webs (23), can be moved outwards parallel to the bearing journal (21) to grip a reel (10), it being possible for the clamping members or clamping webs (23) to be pressed additionally against the reel core (11) in their extended position due to the dead weight of the reel (10).
3. Apparatus according to Claim 1 or 2, characterized in that the clamping webs (23) can be extended into a holding or clamping position in the reel core (11) by means of an actuating member arranged inside the hollow, cylindrical bearing journal (21), preferably by means of a pressure plate (32) which can be moved downwards and on which articulated lugs (27) are mounted, which are connected to the clamping webs (23) and which transmit a spreading movement to the clamping webs due to the displacement of the pressure plate (32).
4. Apparatus according to Claim 3, characterized in that the clamping webs (23) can be moved in an extending direction by means of a solely mechanical actuating member, in particular by means of a compression spring (34) which acts on the pressure plate (32).
5. Apparatus according to Claim 1, characterized in that the clamping webs (23) can be moved, preferably in a retracting direction, by means of an actuating member which is arranged inside the bearing journal (21) and can be acted upon by a pressure medium, in particular by means of a (pressure medium) cylinder (36) which acts counter to the compression spring (34).
6. Apparatus according to Claim 1, characterized in that a scanning member, which projects beyond the bearing journal (21) in the normal position, is arranged at the lower or free end of the bearing journal (21), in particular an impact body (44) which can be moved in the axial direction of the bearing journal (21) and is displaceable in the axial direction of the bearing journal (21) counter to the loading of supporting springs (45) in the event of an incorrect position of the bearing journal (21) and thus generates a signal.
7. Apparatus according to Claim 1, characterized in that a signal can be triggered in the event of an oblique position of the bearing journal (21) relative to the handling unit (19) or a bearing plate (20) thereof, the bearing journal (21) being connected to the handling unit (19) or the bearing plate (20) so as to be elastically movable in the vertical direction, preferably by means of a plurality of bearing bolts (51) which are mounted so as to be displaceable on one side, namely in the region of the bearing plate (20) and are biased into a normal position by compression springs.
8. Apparatus according to Claim 1, characterized in that the reels (10) on the bearing journal (21) are held additionally or solely by outer holding members which can be moved against the underside or the free end of the bearing journal (21) and/or the underside of the reels (10), preferably by means of a supporting limb (58) of a bearing bow which is displaceably mounted on the handling unit (19), in particular on a telescopic arm (60).

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