WO2022238197A1 - Handhabungsvorrichtung und verfahren zu ihrem betreiben - Google Patents
Handhabungsvorrichtung und verfahren zu ihrem betreiben Download PDFInfo
- Publication number
- WO2022238197A1 WO2022238197A1 PCT/EP2022/061969 EP2022061969W WO2022238197A1 WO 2022238197 A1 WO2022238197 A1 WO 2022238197A1 EP 2022061969 W EP2022061969 W EP 2022061969W WO 2022238197 A1 WO2022238197 A1 WO 2022238197A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- transport
- clamping
- gripping
- flat object
- handling device
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000003780 insertion Methods 0.000 claims description 26
- 230000037431 insertion Effects 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 8
- 230000008569 process Effects 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 6
- 230000001154 acute effect Effects 0.000 claims description 3
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 7
- 230000007246 mechanism Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 4
- 239000004753 textile Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 229920002379 silicone rubber Polymers 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/02—Gripping heads and other end effectors servo-actuated
- B25J15/0206—Gripping heads and other end effectors servo-actuated comprising articulated grippers
- B25J15/0213—Gripping heads and other end effectors servo-actuated comprising articulated grippers actuated by gears
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/0028—Gripping heads and other end effectors with movable, e.g. pivoting gripping jaw surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25J—MANIPULATORS; CHAMBERS PROVIDED WITH MANIPULATION DEVICES
- B25J15/00—Gripping heads and other end effectors
- B25J15/08—Gripping heads and other end effectors having finger members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G59/00—De-stacking of articles
- B65G59/02—De-stacking from the top of the stack
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G61/00—Use of pick-up or transfer devices or of manipulators for stacking or de-stacking articles not otherwise provided for
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H3/00—Separating articles from piles
- B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2404/00—Parts for transporting or guiding the handled material
- B65H2404/20—Belts
- B65H2404/26—Particular arrangement of belt, or belts
- B65H2404/269—Particular arrangement of belt, or belts other arrangements
- B65H2404/2693—Arrangement of belts on movable frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2405/00—Parts for holding the handled material
- B65H2405/50—Gripping means
- B65H2405/58—Means for achieving gripping/releasing operation
- B65H2405/581—Means for achieving gripping/releasing operation moving only one of the gripping parts towards the other
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/174—Textile; fibres
Definitions
- the invention relates to a handling device for repositioning dimensionally unstable flat objects, with at least one gripping device that can be moved in space and has a central imaginary vertical axis, which has at least one gripping unit that allows flat objects to be seized and held in place.
- the invention also relates to a method for operating such a handling device.
- a handling device of this type known from DE 102018 216 393 A1 contains at least one gripping device that can be moved spatially by means of a positioning unit formed, for example, by a robot and has one or more gripping units that enable flat objects to be gripped and held in place.
- Each gripping unit is equipped with an adhesive tape that can be attached to a flat object by positioning the gripping device accordingly, so that the same adheres to the gripping unit.
- the flat object can be repositioned by means of the gripping device and put down again at a different location.
- the known handling device dimensionally unstable flat objects can be handled reliably even if they are permeable to air.
- the adhesive band When used in a dusty environment or when handling textile objects that tend to fluff, the adhesive band, however, quickly become soiled, which can result in a reduction in the holding forces.
- the invention is based on the object of creating a handling device with which dimensionally unstable, air-permeable flat objects can be reliably gripped even after a longer period of use and can be easily set down again after repositioning has taken place. Furthermore, an effective method for operating such a handling device is to be proposed.
- a handling device in connection with the features mentioned above provides that the gripping device has a support structure which is provided on an underside of the gripping device with a contact surface pointing downwards in the axial direction of the vertical axis , with which the gripping device can be attached to take a gripping position on a flat object to be gripped, and that the at least one gripping unit has a clamping gap that extends between a clamping surface of the supporting structure and a clamping arm arranged on the supporting structure, which has a The object insertion opening is open towards the underside of the gripping device and in which a flat object section of the flat object to be repositioned can be releasably clamped, the clamping arm having a transport structure which can be pressed onto the flat object to be gripped in the gripping position of the gripping device and passed through a rotary drive unit direction can be driven to perform a revolving transport movement, by means of which a flat object section acted upon by it can be transported through the object insertion
- the measures according to the invention offer the advantageous possibility of securely grasping dimensionally unstable flat objects such as textiles or foils, often referred to as limp, and temporarily holding them for the purpose of relocation, even if the flat objects have an air-permeable structure.
- Holding is based on clamping the flat object, although not the entire flat object is clamped, but only a certain flat object section of the flat object to be repositioned per gripping unit of the gripping device.
- the gripping direction has one or more gripping units, each of which defines a clamping gap in which the flat object section to be held can be releasably clamped.
- the clamping gap is defined between a clamping surface formed on a support structure of the gripping device and a clamping arm arranged on the support structure.
- a change in the position of the gripping device leads to a corresponding change in the position of each gripping unit, so that the clamped flat object is taken along for repositioning.
- the gripping device can be placed with a contact surface formed on the support structure in front of the flat object to be gripped, in particular with surface contact, in such a way that the flat object section to be held is not covered by the contact surface, but is located next to the Contact surface extends in the area of a gap opening of the clamping gap referred to as the object insertion opening.
- This flat object section can be brought into the clamping gap by means of the clamping arm, for which purpose the clamping arm has a transport structure which can be driven to perform a revolving transport movement by means of a rotary drive device preferably designed as part of the gripping device.
- a rotary drive device preferably designed as part of the gripping device.
- the nip is transported or rolled into it.
- the clamping of the flat object section in the clamping gap can depend on the design of the existing clamping mechanism be combined directly with the function of rolling into the clamping gap or take place subsequently.
- it is usually sufficient to unclamp the flat object section located in the clamping gap so that the flat object can fall off the gripping device due to its weight.
- the flat object section can also be actively pushed out of the clamping gap by a reversing transport movement of the transport structure.
- the handling device even those limp flat objects can be held securely whose base area is significantly larger than that of the gripping device, in which case the clamped flat object section is not folded over in one layer but in two layers.
- the transport structure expediently consists of a material with rubber-elastic properties that has a high coefficient of friction.
- the transport structure preferably consists of an elastomer material and in particular of silicone rubber. In this way, the material of the flat object can stick to the transport structure in an easily detachable manner and can be reliably transported into the clamping gap.
- the bearing surface of the support structure provided for laying against a flat object to be picked up expediently extends in a bearing plane at right angles to the vertical axis of the gripping device.
- the contact surface is preferably flat overall.
- the clamping gap of the gripping unit extends in a plane referred to as the gap plane, which is expediently inclined with respect to the vertical axis of the gripping device in such a way that its distance, and consequently also the distance of the clamping gap from the vertical axis, increases towards the underside of the gripping device becomes.
- the contact plane and the gap plane preferably enclose an acute angle, which is preferably of the order of 45 degrees.
- the clamping of the flat object section in the clamping gap can be based, for example, on the resilience of the flat object material and/or the transport structure, without an active clamping movement having to take place.
- a clamping mechanism is also possible, for example, which has a clamping plunger that is movable with respect to the support arm or the support structure.
- an embodiment is considered to be particularly advantageous in which the releasable clamping of the flat object section is effected by means of a clamping arm that is movable overall with respect to the supporting structure.
- the clamping arm of the at least one gripping unit is pivotably arranged on the support structure and can perform a pivoting movement referred to as a clamping arm pivoting movement with respect to the supporting structure, during which a gap height of the clamping gap measured between the clamping surface and the clamping arm changes.
- the clamping gap preferably has a contour that tapers from the object insertion opening to the opposite inner end of the gap, with an acute-angled gap angle that changes during the pivoting movement of the clamping arm.
- the transport structure has a section assigned in particular to the free end of the clamping arm, which in the gripping position tion of the gripping device can be pressed or pressed onto the flat object section to be taken.
- This section of the support structure is referred to as the transport initialization section, since it is responsible for initially taking along the flat object section during the circulating transport movement.
- the gripping device is expediently equipped with a pivoting drive device.
- the pivoting drive device preferably has a linear drive unit which is arranged on the support structure and which is in force-transmitting engagement with the clamping arm via a toothed gear.
- the linear drive unit is preferably motor-driven and contains in particular an electric motor, which is preferably a servomotor.
- the linear drive unit can also be of manual design and, for example, via a
- the linear drive unit has a drive element which can be driven to a linear drive movement in the axial direction of the vertical axis and which has a rack-like drive toothing of the toothed gearing, which is in toothing engagement with an arc-shaped output gearing of the toothed gearing arranged on the clamping arm of the gripping unit, so that a clamping arm pivoting movement of the clamping arm clockwise or counterclockwise can be caused depending on the linear direction of movement of the drive member.
- a clamping arm suitable for performing a pivoting movement, to cause the processes of clamping and releasing the flat object section in the clamping gap by the pivoting movement of the clamping arm and the resulting change in the gap height of the clamping gap.
- the gap height of the clamping gap is determined by the distance between the clamping surface of the support section and the opposite transport structure of the clamping arm.
- the clamping arm can preferably be pivoted downwards by means of the clamping arm pivoting movement so far that the transport initialization section of the transport structure is lower in the axial direction of the vertical axis than the contact surface of the support structure.
- an advantageous procedure provides that the method step (a) mentioned further above is only carried out with regard to the uppermost flat object of the flat object stack and then while maintaining the At the gripping position adjacent to the uppermost flat object, a flat object section of one or more underlying flat objects is also transported into the clamping gap by repeating the process steps (b) and (c) again once or multiple times, so that flat object sections of several Flat objects are arranged one on top of the other in the clamping gap.
- the transport structure expediently belongs to a transport device of the clamping arm, which is arranged movably in relation to an arm base body of the clamping arm that is connected to the support structure.
- the arm base body and the transport structure can carry out the clamping arm pivoting movement together, although the transport structure is able to carry out the circulating transport movement relative to the arm base body. It is favorable if the transport device has a
- Transport roller arrangement has, which has at least one rotatable transport roller and around which the transport port structure extends in a ring-shaped closed manner. At least one and possibly the only transport roller of the transport roller arrangement can be driven in rotation to generate the circulating transport movement of the transport structure. Only that transport structure section that is arranged in the area of the clamping gap is active on the part of the transport structure in terms of transport.
- the clamping gap has a longitudinal axis extending between the object insertion opening and the opposite end of the gap in this regard, which together with the
- the transport roller arrangement expediently contains several transport rollers which are spaced apart from one another in the axial direction of the longitudinal axis of the gap and are arranged in a rotatable manner on the arm base body, around which the transport structure is wound and one of which can be driven in rotation by means of the rotary drive device in order to achieve the circulating transport movement of the to create a transport structure.
- Two of the existing transport rollers form deflection rollers for the transport structure arranged at the ends on the transport roller arrangement, and these can be the only transport rollers.
- the transport rollers designed as deflection rollers are at a slightly greater distance from one another, it is advantageous if at least one further transport roller is arranged between them, which is designed as a support roller serving only to support and not to deflect the transport structure .
- the transport roller arrangement contains only a single transport roller, which is supported all around by the rotating movement of the single transport roller and thus the surrounding fending transport movement executing transport structure is enclosed.
- That longitudinal section of the transport structure which is currently wrapped around a transport roller assigned to the object insertion opening expediently forms a transport roller that can be pressed against the flat object to be gripped.
- the rotary drive device available for generating the transport movement of the transport structure which is expediently a component of the gripping device, expediently has a rotary drive unit which is coupled in terms of drive to the transport structure of the at least one gripping unit via a gear designed in particular as a toothed wheel drive.
- the design of the gear allows an optimal transmission and consequently a preferred rotational speed of the transport structure to be generated.
- the transmission can also be designed as a belt transmission. If the gripping device has several gripping units, the rotary drive unit is expediently responsible for driving the transport structures of both clamping arms.
- the rotary drive unit is motorized and contains, for example, an electric motor and in particular a servo motor.
- the rotary drive unit can also be designed manually and, for example, have a hand crank for torque introduction.
- the transport structure expediently consists of at least one ring-shaped, self-contained flexible strand element.
- the strand element can, for example, be in the form of a strip or a cord.
- the transport structure can consist of just a single line element, for example a sufficiently wide conveyor belt, or it can be composed of a plurality of line elements arranged next to one another at a mutual distance, which can be in the form of narrow belts or in the form of ring bodies with a round and are designed in particular with a circular material cross-section.
- the gripping device not only has just one gripping unit--which is also possible in principle--but is equipped with several gripping units.
- the gripping device preferably has exactly two gripping units arranged next to one another transversely to the vertical axis of the gripping device, which are in particular mirror-inverted with respect to this vertical axis and which can both be used to grip and hold one and the same flat object at different flat object sections.
- the multiple gripping units can preferably be operated synchronously. In this case, it is useful if a linear drive unit is used to generate the clamping arm
- Pivoting movements of all clamping arms and a rotary drive unit for the transport movements of all transport structures are provided.
- a fastening interface is expediently formed on the support structure of the gripping device the gripping device can be fixed to a positioning unit which preferably also belongs to the handling device and which is, for example, a robot or some other manipulator and which allows mechanical spatial movement of the gripping device.
- the handling device can be equipped with only a single gripping device or with several gripping devices.
- a plurality of gripping devices are preferably distributed transversely to their vertical axis at a mutual distance.
- a plurality of gripping devices can be attached uniformly to one and the same positioning unit.
- Several gripping devices are particularly recommended for handling very large, dimensionally unstable flat objects, for example textile webs or foil webs. In this case, the large-area flat object can be held in place at the same time by means of the multiple gripping devices for subsequent transport.
- the handling device expediently has a base frame on which the several gripping devices are attached at mutually variable distances, so that an adaptation to the base area of the flat object to be handled is possible.
- the base frame can have a fastening interface for attachment to a positioning unit.
- the handling device is expediently equipped with an electronic control device with which the operation of the at least one gripping device and its components can be controlled and in particular also automated.
- FIG. 1 shows a preferred embodiment of the handling device according to the invention in a perspective view, with a preferred design of a gripping device being illustrated in the state attached to a positioning unit indicated only in dot-dash lines,
- FIG. 2 shows the gripping device from FIG. 1 in a side view looking in the direction of arrow II from FIG.
- FIG. 3 is a top view of the gripping device looking in the direction of arrow III from FIG. 1,
- FIG. 4 shows a bottom view of the gripping device looking in the direction of arrow IV from FIG. 1,
- FIG. 5 is a front view of the gripping device looking in the direction of arrow V from FIGS. 1 and 2
- FIG. 6 is a rear view of the gripping device looking in the direction of arrow VI from FIGS. 1 and 2
- FIG. 7 shows a section through the gripping device parallel to a vertical axis of the gripping device according to section plane VII-VII from FIGS. 2 and 9, 8 shows a further section through the gripping device in a sectional plane VIII-VIII from FIG. 6 at right angles to the vertical axis,
- FIG. 9 shows a section through the gripping device in a sectional plane IX-IX from FIG. 6 that is parallel to the vertical axis and runs perpendicularly with respect to the sectional plane of FIG. 7, and FIGS
- the drawing shows a handling device 1 which can be used to reposition one or more flat objects 2 between a starting point and a destination.
- the flat objects 2 have dimensionally unstable, or in other words limp properties, which can be found, for example, in layers of textiles or in plastic films or in thin rubber mats.
- the flat objects 2 are objects with a two-dimensional extent and with a relatively small thickness transverse to their plane of extent.
- the flat object 2 to be repositioned in each case is made available at the starting point, for example, by a provision device 3 of any type for its repositioning.
- the provision device 3 is a base, such as a table.
- the provision device 3 can be part of a production machine, through which the flat objects 2 in be provided with a desired contour cut form.
- the handling device 1 contains at least one gripping device 4 as the main component, with the illustrated handling device 1 being equipped with exactly one such gripping device 4 . More complex designs of the handling device 1 contain a plurality of gripping devices 4 distributed as required, it being advantageous if all of the gripping devices 4 are distributed in one working plane. Such a handling device 1 is expediently equipped with adjustment means that make it possible to change the relative position between the multiple gripping devices 4 and to fix them in a detachable manner in different patterns. When used as intended, the exemplary gripping device 1 is fastened to a positioning unit 5, indicated only schematically in dot-dash lines, which also expediently forms part of the handling device 1, but can also be available as an external component.
- the gripping device 4 has a fastening interface 6 which is designed, for example, as a fastening flange suitable for screw fastening to the positioning unit 5 .
- the positioning unit 5 is, for example, a robot or a movable robot arm.
- the positioning unit 5 is driven, for example, electrically and/or by means of fluid power.
- the gripping device 4 can be moved spatially as required by performing a handling movement.
- the handling movement is preferably a three-dimensional movement tion, although any other degree of freedom of movement can also be made available.
- the gripping device 4 has an imaginary vertical axis 9, the axial direction 9a of which is also referred to below as the vertical direction 9a.
- the vertical axis 9 extends between an upper side 18 and an underside 13 of the gripping device 4.
- FIG. 3 shows a view of the upper side 18 and FIG 9 aligned vertically.
- the gripping device 4 also has a longitudinal axis 8 at right angles to the vertical axis 9, which extends between a front side 15 and a rear side 16 of the gripping device 4, with FIG. 5 showing a view of the front side 15 and FIG the back 16 of the gripping device 4 offers.
- An imaginary transverse axis 10 of the gripping device 4 runs orthogonally to both the longitudinal axis 8 and the vertical axis 9 and extends between two opposite lateral device areas 7a, 7b.
- the gripping device 4 has a stable and in particular rigid support structure 14.
- the optional fastening interface 6 is formed on the support structure 14 and there in particular on the upper side 18.
- the support structure 14 has a contact surface 19 pointing downwards in the height direction 9a. It has a rectangular contour, for example, and extends in a contact plane 22 at right angles to the vertical axis 9.
- the flat object 2 acted upon by the contact surface 22 is in turn supported on the supply device 3 in the vertical direction, so that it is frictionally held between the contact surface 22 and the supply device 2 and is in particular clamped.
- the gripping device 4 is equipped with two gripping units 24a, 24b, which are also referred to below as first and second gripping units 24a, 24b and which are each located on one of the two lateral device areas 7a, 7b.
- the two gripping units 24a, 24b are arranged at the same height in the vertical direction 9a and at a mutual distance next to one another in the axial direction of the transverse axis 10. They are preferably at least essentially mirror-symmetrical to a plane of symmetry spanned by the vertical axis 9 and the longitudinal axis 8 .
- Each of the two gripping units 24a, 24b defines a clamping gap 25, which has a gap opening 26 facing the underside 13, which is also referred to as object insertion opening 25 below.
- the two object insertion openings 26 each adjoin one of the two outer end sections 19a, 19b of the contact surface 19 in the axial direction of the transverse axis 10, also referred to below as transverse direction 10a, which are assigned to the two lateral device regions 7a, 7b .
- Each object insertion opening 26 preferably extends at least essentially in the contact plane 22.
- Each object insertion opening 26 has a longitudinal extension parallel to the longitudinal axis 8, which is less than one in the Width of the relevant object insertion opening 26 measured in the transverse direction 10a.
- Each clamping gap 25 extends continuously from the front 15 to the rear 16 in the axial direction of the longitudinal axis 8, also referred to below as the longitudinal direction 8a, being continuously open both on the front 15 and on the rear 16.
- Each clamping gap 25 has a longitudinal gap axis 27 which runs in a common plane with the vertical axis 9 and expediently also with the transverse axis 10 and which extends from the object insertion opening 26 to an inner gap end 28 which is closer to the upper side 18 than the object insertion opening 26.
- Each clamping gap 25 extends in a gap plane 31 which coincides with the longitudinal axis 26 of the gap, which is aligned parallel to the longitudinal axis 8 and which is inclined with respect to the vertical axis 9 in such a way that it moves away from the object on its way -Introduction opening 26 to the inner column end 28 approaches the central vertical axis 9 of the gripping device 4.
- the two object insertion openings 26 are arranged at a greater distance from one another in relation to the transverse direction 10a than the two inner gap ends 28.
- Each gap plane 31 preferably encloses an acute angle with the contact plane 22 on the inside facing the vertical axis 9.
- Each clamping gap 25 is delimited on the one hand by a clamping surface 32 arranged or formed on the supporting structure 14, which is formed in particular by a side surface section of the supporting structure 14 facing the lateral device area 7a, 7b.
- a lower end section 33 of the support structure 14 assigned to the underside 13 has a trapezoidal shape that is clearly visible.
- the outer contour of this lower end section 33 is at the bottom from the contact surface 19 and at the transverse sides from the clamping surfaces 32 converging upwards limited.
- Each clamping surface 32 is preferably a flat surface.
- Each clamping gap 25 is delimited in a region opposite the clamping surface 32 by a clamping arm 34 arranged on the support structure 4 which, like the clamping surface 32 lying opposite at a distance, is a component of the associated gripping unit 24a, 24b.
- Each clamping arm 24 has an inner end section 35, which is fastened to the support structure 14 in a region above the inner column end 28 in the height direction 9a and, starting from there, extends downwards in the direction of the underside 13 at an incline with respect to the vertical axis 9 extends and ends freely with an outer end section 36 opposite the inner end section 35 .
- the inner end sections 35 of the two clamping arms 34 are therefore closer together than the two outer end sections 36.
- Each clamping arm 34 is preferably pivotably mounted on the support structure 14 to enable a clamping arm pivoting movement 37 indicated by double arrows.
- the pivot axis 38 for the pivoting movement of the clamping arm 37 runs in the longitudinal direction 8a of the gripping device 4.
- the pivoting axis 38 is preferably located in the area of the inner end section 35 of the clamping arm 35 the clamping surface 32 and the clamping arm 34 measured gap height of the clamping gap 35.
- Each clamping arm 34 is preferably positioned between an inner pivoting end position pivoted towards the assigned clamping surface 32, which can be seen in FIG as can be seen from FIG. 10, can be pivoted relative to the supporting structure 14. In the outer pivot end position, the gap height of the clamping gap 25 has a maximum. At least in all pivot positions of the clamping arm 34 that deviate from the inner pivot end position
- Clamping gap 25 expediently has a course that tapers, starting from the object insertion opening 26 towards the inner end 28 of the gap.
- a limp flat object 2 can be held and transported by means of the gripping device 4 by temporarily clamping one of two sections 42 of the flat object 2 in each of the two clamping gaps 25, which are also referred to below as flat object section 42.
- the clamping mechanism used for this purpose comprises, per gripping unit 24a, 24b, the clamping surface 32 fixed to the support structure 14 and the clamping arm 34, which can be pivoted in this regard Swivel position that deviates from the inner swivel end position and is used as a swivel
- the open position can be pivoted in accordance with the arrows 43 in the direction of the inner pivot end position until the desired clamping force is exerted on the flat object section 42 located in the clamping gap 25 .
- the above-mentioned outer pivot end position represents a
- each clamping arm 34 makes it possible to convey the flat object section 42 to be held of the flat object 2 to be repositioned through the object insertion opening 26 into the clamping gap 25 .
- This special design of the clamping arm 34 includes a
- Transport structure 44 which, in the gripping position of gripping device 4 shown in FIGS. 5, 10 to 12 and 14, can be pressed according to arrows 47 in FIG a rotary drive device 45 of the gripping device 4 can be driven to perform a revolving transport movement 46 indicated by arrows in Figures 12 and 14, by means of which the applied flat object section 42 is carried along due to friction and through the object insertion opening 26 according to the arrows 48 in Figures 12 and 14 is transported into the associated clamping gap 25. Since the transport movement 46 is a circular movement, it can also be said that the flat object section 42 to be held is thereby rolled into the adjacent clamping gap 25 .
- the transport structure 44 is a component of a transport device 49 of the clamping arm 34 in question, which is arranged in a movable manner on an arm base body 52 of the clamping arm 34, which is attached to the support structure to maintain the pivoting mobility of the clamping arm 34 14 is pivotally mounted.
- the above statements on the pivot mounting of the clamping arms 34 thus relate to the respective arm base body 42 as an example.
- the support structure 14 has two lateral device areas 7a, 7b in each case Side walls 53 protruding in the transverse direction 10a and spaced apart from one another in the longitudinal direction 8a, between which the associated clamping arm 34 enters with its inner end section 35 and between which a bearing shaft 54 extends, which also supports the inner end section of the arm base body 52 in a Way interspersed that the same is pivotable about the bearing shaft 54, the longitudinal axis of which defines the pivot axis 38 for the pivoting movement 37 of the clamping arm, for example.
- Each clamping arm 34 is thus pivotably mounted on the supporting structure 14 via the associated arm base body 52 in order to enable the clamping arm pivoting movement 37 .
- the transport device 49 has a transport roller arrangement 55 with a plurality of transport rollers 56, for example three, which are each mounted on the arm base body 52 such that they can rotate about their longitudinal axis 57, with their longitudinal axes 57 extending parallel to the longitudinal axis 8 of the gripping device 4.
- the plurality of transport rollers 56 are arranged one after the other in the axial direction of the longitudinal axis 27 of the gap at a distance from one another.
- the transport structure 44 is only wrapped around the transport roller arrangement 55 on the outside, with an inner transport roller 56a assigned to the inner end section 35 and an outer transport roller 56b assigned to the outer end section 36 acting as deflection rollers, while the middle transport roller 56b arranged in between only acts as the Function of a supporting role exerts.
- the central transport roller 56c is omitted, while in another exemplary embodiment that is also not illustrated, a plurality of central transport rollers 56c are arranged as support rollers between the inner and the outer transport roller 56a, 56b.
- One of the transport rollers 56 per clamping arm 34 which is, for example, the inner transport roller 56, acts as a drive roller 58, which is drivingly coupled to the rotary drive device 45 and which can be driven in rotation by the rotary drive device 45, around which the Transport roller assembly 55 to produce circulating transport movement 56 of the transport structure 44.
- a drive force is transmitted between the drive roller 58 and the transport structure 44 due to friction due to a certain pretension with which the transport structure 44 is seated on the transport roller arrangement 55 .
- the transport structure 44 which applies to the exemplary embodiment, consists of a material with rubber-elastic properties and in particular consists of an elastomeric material.
- the transport structure 44 could also be designed in the manner of a toothed belt, for example, and engage with an externally toothed drive roller 58 .
- the handling device 1 is expediently equipped with an electronic control device 59 to which the rotary drive device 45 is connected in order to bring about the transport movement 46 or to stop the transport movement 46 as required.
- the transport movement 46 can preferably be brought about bidirectionally.
- the gripping device 4 is suitably with a
- Equipped pivoting drive device 62 through which the clamping arm pivoting movement 37 can be caused and through which each clamping arm 34 is expediently positioned in the different pivot positions already mentioned above.
- the pivoting drive device 62 is also expediently connected to the electronic control device 59, by which the clamping arm pivoting movement 37 and the swivel angle moderate positioning of the clamping arms 34 is controllable.
- the transport structure 44 of each clamping arm 34 has a section pointing downwards in the height direction 9a, which is referred to below as the transport initialization section 63 and which is in particular that section of the transport structure 44 , which defines the lowest position of the transport structure 44 in terms of height, independently of the pivoting position of the clamping arm 34 .
- This is the distance of the transport structure 44 that produces the first contact between the transport structure 44 and the associated flat object section 42 when the clamping arms 34 are pivoted downwards according to the arrows 47 .
- the transport initialization section 63 is formed by that length section of the transport structure 44 which currently wraps around the outer transport roller 56b associated with the object insertion opening 26 and which is also referred to below as the wrap-around section for better differentiation.
- the transport initialization section 63 is preferably formed by that end area of the wrap-around section of the transport structure 44 which momentarily merges into the section of the transport structure 44 which is referred to below as the transport section 64 and delimits the clamping gap 25 .
- the contact of the transport initialization section 63 with the flat object 2 starts the process, indicated by the arrow 48, of transporting or rolling the flat object section 42 into the associated clamping gap 25.
- a preferred method for operating the handling device 1
- several layers of flat objects 2 are first placed on a supply device 3, forming a flat object stack 65, as is illustrated in FIG.
- the gripping device 4 is lowered onto the stack of flat objects 65 with its contact surface 19 in front until the contact surface 19 is seated on the uppermost flat object 2 of the stack 65 of flat objects.
- the two clamping arms 34 are in the outer pivot end position.
- Initialization section 63 is pressed against the flat object section 42 protruding beyond the contact surface 19 .
- the transport structures 44 of the two clamping arms 34 are then driven by the rotary drive device 45 to carry out the transport movement 46 in which they revolve around the respectively assigned transport roller arrangement 56 .
- the flat object sections 42 are carried along by the transport structure 44 in the region of the transport initialization section 63 due to friction and are moved into the associated clamping gap 25 as part of a folding process, as illustrated by the arrows 48.
- the gap height of the clamping gap 25 is usually greater than the thickness of the flat object section 42, although there is contact between the unstable object material and the transport tower 63, so that the flat object section 42 is reliably conveyed sufficiently far into the clamping gap 25.
- a constant driving force acting in the direction of the inner pivoting end position is expediently exerted on the clamping arms 34 by the pivoting drive device 62 .
- the consequence of this is that the gap height of the clamping gaps 25 is reduced at the moment when the flat object section 42 has left the area of influence of the transport initialization section 63 .
- the clamping arms 34 are then pivoted further downwards until they come to rest with their transport initialization section 63 on the flat object sections 42 of the flat object 2 of the flat object stack 65 lying underneath.
- the transport movement 46 is stopped by the control device 59 as soon as the flat object section 42 has been rolled into the associated clamping gap 25 .
- the gripping device 4 is then lifted off the remaining flat objects 8 of the flat object stack 65 according to the arrows 66 in FIG.
- Arrows 43 are pivoted in the direction of the inner pivot end position until the flat object sections 42 located in the clamping gaps 25 are clamped.
- the gripping device 4 can now be moved to the desired target position together with the flat object 2 held by it.
- the clamping arms 34 are activated by appropriate control of the swivel drive device 62 is pivoted in the direction of the outer pivoting end position, as a result of which the clamping gaps 25 are widened.
- the laying down of the flat object 2 can, if necessary, be supported by the transport structures 44 being driven by the rotary drive device 45 to perform a transport movement 46 which is directed in the opposite direction to that which drives the flat object sections 42 into the clamping gaps 25 had caused.
- the flat object 2 can also be set down at the destination solely by the reversing transport movement 46 and without the accompanying widening of the clamping gaps 25 .
- the revolving movement 46 that causes the flat object sections 42 to be conveyed into the clamping gaps 25 according to FIG. 12 can be started after the transport structure 44 has been pressed against the flat object section 42 or beforehand, so that a transport force is exerted on the flat object section 42 at the moment of attachment becomes.
- FIG. 12 shows how the flat object sections 42 of the uppermost flat object 2 have already been moved completely into the clamping gaps 25 and how flat object sections 42 of the flat object 2 underneath are also being rolled into the clamping gaps 25 at the moment.
- each clamping arm 34 is expediently within the scope of the clamping arm
- Pivoting movement 37 can be pivoted downwards so far that the outer end section 36, including the transport initialization section 63 located there, assumes a position which is lower in the vertical direction 9a than the plant surface 19 or its plant level 22.
- the Clamping arm 34 can be pivoted very close to the associated clamping surface 32, in particular even up to the point of contact with this clamping surface 32, which ensures a secure clamping function even with very thin flat objects 2. This also ensures the stack processing of flat objects 2 stacked on top of one another, as explained with reference to FIG.
- the same process sequences can be carried out with a gripping device 4 which has only a single gripping unit 24a or 24b.
- a single-acting gripping device 4 can be imagined as being formed in comparison to the double-acting gripping device 4 described so far, based on FIG first gripping unit 24a shown there are omitted.
- the handling device 1 illustrated is equipped with a preferred embodiment of a swivel drive device 62 .
- This pivoting drive device 62 contains a linear drive unit 68 arranged on the support structure 14 and a toothed gear 69, through which the linear drive unit 68 is coupled in a force-transmitting manner to the clamping arm 34 of each gripping unit 24a, 24b in order to generate the clamping arm pivoting movement 37. All components of the swivel drive device 62 are expediently arranged on the front side 15 of the gripping device 4 .
- the linear drive unit 68 has, for example, a drive motor 72, which has a motor housing 73, via which it is attached to the front of the support structure 14, in particular in an area that is higher in the vertical direction 9a than the two clamping arms 34.
- the linear drive unit 68 has furthermore, a drive member 75 which can be driven by the drive motor 72 to perform a linear drive movement 74 indicated by a double arrow and which is preferably guided in a linearly displaceable manner on a linear guide device 76 attached to the front of the support structure 14 .
- the linear drive unit 68 is designed in such a way that the direction of movement of the linear drive movement 74 coincides with the vertical direction 9a.
- the drive member 75 is expediently located in the vertical direction 9a below the drive motor 72, to which it is coupled for movement via a drive element 76.
- the drive element 76 is a motor shaft that can be driven in rotation, which has a threaded section that is in threaded engagement with the drive member 75, so that a rotation of the drive element 76 that can be caused by the drive motor 72 causes the linear drive movement 74 of the bearing structure 14 anti-rotation drive member 75 result Has.
- the drive motor 72 is, in particular, an electric motor and preferably a servomotor, which, if necessary, enables the rotational position of the drive element 76 and thus the linear position of the drive member 75 to be set precisely.
- the drive motor 72 can also be a fluid motor, for example a pneumatic linear drive, in which case the drive element 76 is a linearly displaceable piston rod which acts on the drive member 75 .
- the drive motor 72 can be or is connected to the electronic control device 59 via an electromechanical interface device 77 preferably arranged on the motor housing 73 of the drive motor 72 for its electrical control.
- the drive member 75 has a rack-like drive toothing 78a, 78b, which belongs to the toothed gear 69 and extends in the vertical direction 9a.
- These two drive toothings 78a, 78b are preferably arranged on opposite longitudinal sides of the drive member 75 in the transverse direction 10a.
- Each gripping unit 24a, 24b has a pivoting lever 81 which is mounted on the support structure 14 such that it can pivot about a pivoting axis 82 which preferably coincides with the pivoting axis 38 of the associated clamping arm 34.
- This is realized, for example, in that the bearing shaft 54 passes through the associated side cheek 53 and, in this regard, projects on the rear side 15 with a shaft end section onto which the pivoting lever 81 is slipped in a pivotingly movable manner.
- Each pivoted lever 81 has a drive lever arm 83 on which convex arcuate output teeth 84a, 84b facing the drive member 75 are formed, which are in constant meshing engagement with the facing rack-like drive teeth 87a, 87b of the drive member 75.
- each pivoted lever 81 has an output lever arm 85 which is connected to the arm base body 52 of the associated clamping arm 34 at a radial distance relative to the pivot axis 38 in such a way that the arm base body 52 and thus the entire clamping arm 34 support the pivoting movement of the pivoted lever 81 participates and thus performs a pivoting movement itself, which is the clamping arm pivoting movement 37 already explained above.
- This driving connection is preferably realized in that the clamping arm 34 has a driver extension 86 protruding on the rear side 15 in the longitudinal direction 8a, which is fixed at a distance from the pivot axis 82 on the output lever arm 85 and is plugged into the output lever arm 85, for example.
- the driver extension 86 is formed by the end section of a bearing shaft 87 of the clamping arm 34, which is used to pivot the central transport roller 56c.
- This bearing shaft 87 expediently passes through both associated side cheeks 53 through an arcuate elongated hole 88 formed in the respective side cheek 53 .
- the rotary drive device 45 responsible for generating the transport movement 46 of the transport structure 44 circulating around the transport roller arrangement 56 contains as a drive source a rotary drive unit 91 fixed to the support structure 14 and preferably arranged inside the support structure 14.
- the rotary drive device 45 also expediently contains a gearbox 92 by which the rotary drive unit 91 is drivingly coupled to the transport structure 44 of each clamping arm 34 present.
- the gear 92 is arranged, for example, outside the support structure 44 and is located in particular on its rear side 16.
- the rotary drive unit 91 preferably contains an electric motor 93 with a drive shaft 94 which can be driven in a rotary drive movement 96 and protrudes over the support structure 14 on the rear side 16 and carries a drive gear wheel 95 of the gear mechanism 92, which is designed as a gear mechanism, for example.
- the drive gear wheel 95 together with the drive shaft 94, carries out the rotary drive movement 96 indicated by a double arrow in the desired direction of rotation.
- the drive roller 58 which is preferably formed by the inner transport roller 56, is connected in a rotationally fixed manner to the bearing shaft 54 that passes through it, with an output gear wheel 97 of the gear mechanism 92 being mounted on an end section of the bearing shaft 54 that protrudes beyond the side cheek 53 located there on the front side 15 is rotatably arranged.
- the two output gears 97 are geared to the drive gear 95 in such a way that when the drive gear 95 rotates, both output gears 97 are set in rotation at the same time, in such a way that the sections of both transport structures 44 facing a clamping gap 34, i.e. for example the two Transport strands 64 are moved in the same direction, i.e.
- the transmission 92 preferably contains a plurality of intermediate gears 98 which are interposed between the drive gear 95 and one of the two output gears 97 in the manner clearly evident from FIG.
- These intermediate gears 98 also ensure in a simple manner that there is an uninterrupted rotary drive connection between the drive gear 95 and the two driven gears 97 during the pivoting movement of the clamping arm 37 and in every pivoting position of the clamping arms 34 .
- the drive motor 91 of the rotary drive unit 91 can expediently also be connected or is connected to the electronic control device 59 via the above-mentioned electromechanical interface device 77 for its electrical control.
- the transport structure 44 consists of a plurality of ring-shaped, self-contained flexible strand elements 99 which are arranged next to one another at a mutual distance transversely to a longitudinal axis 101 of the respective clamping arm.
- the longitudinal axis 101 of the arm runs between the inner and outer end sections 35, 36 of the clamping arm 34 in a plane spanned by the vertical axis 9 and the transverse axis 10.
- Each strand element 99 encloses the associated transport roller arrangement 55.
- the strand elements 99 are preferably not only flexible in bending, but also rubber-elastic, and they sit on the transport roller arrangement 55 under pretension.
- each transport roller 56 expediently has on its outer circumference a number of annular grooves corresponding to the number of strand elements 99, which are arranged one after the other in the longitudinal direction of the respective transport roller 56 and which each partially accommodate one of the strand elements 99 so that it circulating transport movement 46 is guided exactly.
- the several strand elements 99 are designed in the form of strips with, in particular, a strand body that is rectangular in cross section.
- the transport structure 44 consists of a single, ring-shaped, self-contained strand element 99 that is designed in the form of a belt, so that the transport structure 44 can be described as a uniform transport belt.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Robotics (AREA)
- Specific Conveyance Elements (AREA)
- Manipulator (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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EP22727828.0A EP4337431A1 (de) | 2021-05-11 | 2022-05-04 | Handhabungsvorrichtung und verfahren zu ihrem betreiben |
CN202280034566.9A CN117337228A (zh) | 2021-05-11 | 2022-05-04 | 操作设备和用于运行该操作设备的方法 |
US18/559,705 US20240227206A1 (en) | 2021-05-11 | 2022-05-04 | Manipulating device and method for operation thereof |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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DE102021204777.7A DE102021204777A1 (de) | 2021-05-11 | 2021-05-11 | Handhabungsvorrichtung und Verfahren zu ihrem Betreiben |
DE102021204777.7 | 2021-05-11 |
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WO2022238197A1 true WO2022238197A1 (de) | 2022-11-17 |
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PCT/EP2022/061969 WO2022238197A1 (de) | 2021-05-11 | 2022-05-04 | Handhabungsvorrichtung und verfahren zu ihrem betreiben |
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Country | Link |
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US (1) | US20240227206A1 (de) |
EP (1) | EP4337431A1 (de) |
CN (1) | CN117337228A (de) |
DE (1) | DE102021204777A1 (de) |
WO (1) | WO2022238197A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN116331884A (zh) * | 2023-05-30 | 2023-06-27 | 中科摩通(常州)智能制造股份有限公司 | 一种基于新能源电池生产的上料装置及其上料方法 |
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EP2067723A1 (de) * | 2007-12-05 | 2009-06-10 | Punch Graphix International N.V. | Greifeinheit und Verfahren zum Greifen von Papier |
GB201113298D0 (en) * | 2011-08-02 | 2011-09-14 | Wilson Graham J | Device and method for collection of material from a surface |
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2021
- 2021-05-11 DE DE102021204777.7A patent/DE102021204777A1/de active Pending
-
2022
- 2022-05-04 WO PCT/EP2022/061969 patent/WO2022238197A1/de active Application Filing
- 2022-05-04 US US18/559,705 patent/US20240227206A1/en active Pending
- 2022-05-04 EP EP22727828.0A patent/EP4337431A1/de active Pending
- 2022-05-04 CN CN202280034566.9A patent/CN117337228A/zh active Pending
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JPH01231732A (ja) * | 1988-03-08 | 1989-09-18 | Takagi Ind Co Ltd | チャック装置 |
US5303910A (en) * | 1992-09-10 | 1994-04-19 | Tice Engineering & Sales, Incorporated | Pick-up means for use with limp sheet material |
US20020113448A1 (en) * | 2000-12-07 | 2002-08-22 | Homayoon Kazerooni | Mechanical grapple for manipulating objects |
US20020125727A1 (en) * | 2000-12-07 | 2002-09-12 | Homayoon Kazerooni | Mechanical grapple for grabbin and holding sacks and bags |
DE202010015221U1 (de) | 2010-02-24 | 2011-01-05 | Raumaster Paper Oy | Anlage zum Wechseln von Greifer oder Adapter; Anordnung für eine Wechselstation sowie Vertikalrollenlager |
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Also Published As
Publication number | Publication date |
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CN117337228A (zh) | 2024-01-02 |
DE102021204777A1 (de) | 2022-11-17 |
EP4337431A1 (de) | 2024-03-20 |
US20240227206A1 (en) | 2024-07-11 |
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