EP4166465A1 - Dispositif de découpe et d'enlèvement d'un enrubanage - Google Patents

Dispositif de découpe et d'enlèvement d'un enrubanage Download PDF

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Publication number
EP4166465A1
EP4166465A1 EP21202260.2A EP21202260A EP4166465A1 EP 4166465 A1 EP4166465 A1 EP 4166465A1 EP 21202260 A EP21202260 A EP 21202260A EP 4166465 A1 EP4166465 A1 EP 4166465A1
Authority
EP
European Patent Office
Prior art keywords
strapping
outer cylinder
clamping
inner cylinder
cutting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP21202260.2A
Other languages
German (de)
English (en)
Inventor
Moritz HÜBL
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fmw Foerderanlagen GmbH
Original Assignee
Fmw Foerderanlagen GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fmw Foerderanlagen GmbH filed Critical Fmw Foerderanlagen GmbH
Priority to EP21202260.2A priority Critical patent/EP4166465A1/fr
Priority to PCT/EP2022/078338 priority patent/WO2023062054A1/fr
Publication of EP4166465A1 publication Critical patent/EP4166465A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
    • B65B69/00—Unpacking of articles or materials, not otherwise provided for
    • B65B69/0025—Removing or cutting binding material, e.g. straps or bands

Definitions

  • the invention relates to a device for cutting open and removing a strapping, in particular a strapping wire, from a square bale, comprising: a clamping and cutting device for clamping and cutting open the strapping.
  • the invention relates to a method for cutting open and removing a strapping, in particular a strapping wire, from a square bale.
  • a robotic tool for the automated removal of wires from a packaged item strapped with it is known.
  • This robotic tool has gripping tongs with two diamond-shaped gripping tongs, with which the wire is lifted from the packaged goods and held.
  • the gripping tongs are provided on a spindle with which the severed wire is wound up.
  • a stator is fastened non-rotatably to the robot tool and has a groove running obliquely to the axis of rotation of the spindle, through which the severed wire is rolled up on the spindle to form a roll when the spindle is rotating.
  • the robot tool has side cutters with two pliers to cut open the wire. This side cutter is arranged outside the stator.
  • a disadvantage is the comparatively complicated structure of the known robot tool, which requires the use of different actuators that have to be coordinated with one another when holding and cutting through the wire. Furthermore, the installation size of the known robot tool is unfavorable.
  • the object of the present invention is to alleviate or eliminate at least individual disadvantages of the prior art.
  • the invention is preferably aimed at simplifying the holding and cutting open of the strapping.
  • the clamping and cutting device has a Outer cylinder and an inner cylinder, the outer cylinder and the inner cylinder each having at least one receiving groove for receiving the strapping, a rotary drive being provided for rotating the inner cylinder relative to the outer cylinder, a clamping and cutting gap being provided between the outer cylinder and the inner cylinder for clamping and Cutting the strapping is formed by rotating the inner cylinder relative to the outer cylinder via the rotary drive.
  • An annular clamping and cutting gap is thus provided between the inside of the outer cylinder and the outside of the outer cylinder, with which the strapping can be clamped on the one hand and cut open on the other hand.
  • the inner cylinder rotates within the outer cylinder, as a result of which the strapping arranged in the receiving grooves of the inner and outer cylinder is pulled into the clamping and cutting gap, clamped and finally severed.
  • one and the same drive namely the rotary drive, is set up for clamping and cutting open the strapping.
  • complex coordination of several drives during the clamping and cutting process can be omitted. This makes clamping and cutting easier and more reliable.
  • the rotary drive is preferably set up to rotate the inner cylinder in relation to a stationary outer cylinder.
  • the rotary drive can be set up to rotate the outer cylinder in relation to the stationary inner cylinder. It is essential that the rotary drive causes a relative movement between the inner cylinder and the outer cylinder, which enables the clamping and separating of the strapping.
  • the inner cylinder can be positioned relative to the outer cylinder by means of the rotary drive in a receiving, a clamping and a cutting position.
  • the receiving position the receiving groove on the inner cylinder is aligned with the receiving groove on the outer cylinder, so that the strapping can be received in a substantially rectilinear form in the receiving grooves of the outer and inner cylinders.
  • the clamping position the receiving groove on the inner cylinder is rotated by a first angle of rotation relative to the receiving groove on the outer cylinder for clamping the strapping.
  • the strapping is clamped between the outside of the inner cylinder and the inside of the outer cylinder.
  • the receiving groove on the inner cylinder is rotated by a second angle of rotation relative to the receiving groove on the outer cylinder for cutting open the strapping.
  • a second angle of rotation By twisting by the second angle of rotation, such high forces are applied to the strapping in the clamping and cutting gap that the strapping is cut open.
  • the second angle of rotation is greater than the first angle of rotation.
  • the strapping can thus be clamped by rotating it through the first angle of rotation (relative to the receiving or starting position) and cut by rotating it further, preferably in the same direction of rotation, through the second angle of rotation (relative to the receiving position).
  • the first angle of rotation is more than 20°, in particular more than 30°, for example from 30° to 40°.
  • the second angle of rotation is preferably from 41° to 60°, in each case based on the receiving or starting position.
  • the receiving groove on one of the inner and outer cylinders has a run-up slope for lifting the strapping by rotating the inner cylinder relative to the outer cylinder.
  • the ramp forms (in relation to the direction of rotation of the inner cylinder relative to the outer cylinder) an undercut, which leads to that the strapping is lifted off the top of the square bale relative to the outer cylinder when the inner cylinder is twisted.
  • the receiving groove on the other of the inner and outer cylinder has a side surface running perpendicular to the top of the cuboid bale or a counter-slope which points in the other direction in comparison is inclined towards the ramp.
  • the inner cylinder and the outer cylinder each have two opposing receiving grooves for the strapping.
  • two areas of the strapping spaced apart in the longitudinal direction of the strapping can each be inserted into the two receiving grooves of the inner cylinder and the two receiving grooves of the outer cylinder.
  • the receiving grooves on the inner cylinder (and correspondingly the receiving grooves on the outer cylinder) are arranged opposite one another, so that the strapping can be arranged in a straight line in the receiving grooves in the receiving position.
  • One pair of receiving grooves on the inner and outer cylinder can be designed for clamping the strapping, the other pair of receiving grooves on the inner and outer cylinder can be designed for cutting open the strapping.
  • the inner and the outer cylinder can each have four receiving grooves.
  • the four receiving grooves are preferably distributed evenly over the circumference of the inner and outer cylinder.
  • adjacent receiving grooves can be arranged at an angle of essentially 90° to one another.
  • This design is suitable for clamping and cutting open cross-wiring in which strapping wires are arranged at right angles to one another on the square bale.
  • a cutting edge for cutting open the strapping is provided adjacent to at least one receiving groove on the outer or inner cylinder. After the strapping has been clamped, the blade is guided onto the strapping in such a way that the strapping is cut open with the blade.
  • a cutting edge is provided adjacent to one of the outer cylinder receiving grooves and a counter blade is provided adjacent to one of the inner cylinder receiving grooves.
  • the cutting edge (and/or the counter cutting edge) is formed by a hard metal part which is attached, in particular screwed, to the outer or inner cylinder.
  • a positioning unit for moving the clamping and cutting device along an upper side of the square bale perpendicular to the strapping and also perpendicular to the upper side of the square bale is preferred intended.
  • the positioning unit can move the clamping and cutting device in a first axis perpendicular to the strapping and in a second axis perpendicular to the top of the square bale, i.e. in the vertical direction.
  • the positioning unit can have a robot arm that can be moved in all spatial directions and on which the clamping and cutting device is mounted.
  • the positioning unit has a sprocket shaft which is non-rotatably connected to the clamping and cutting device, the rotary drive for turning the inner cylinder relative to the outer cylinder being connected to the splined shaft.
  • the rotary drive has an actuator which acts on the toothed shaft via a lever arrangement in order to rotate the inner cylinder relative to the outer cylinder.
  • a further rotary drive is provided for rotating the outer and inner cylinder together in order to wind up the strapping that has been cut open on the lateral surface of the outer cylinder.
  • the strapping that has been cut open can thus be wound up on the lateral surface of the outer cylinder by driving the further rotary drive.
  • a winding device is provided for winding up the strapping cut open with the clamping and cutting device.
  • the winding device is spaced apart from the clamping and cutting device.
  • the winding device preferably has two winding mandrels on a turntable.
  • a sensor unit for detecting a position of the strapping on the square bale is preferably provided.
  • the sensor unit can have an inductive sensor or an optical detection unit, for example a camera, for detecting the strapping.
  • the device 1 shows a (robot) device 1 for cutting open and removing binding or strapping wires 2, which are wound parallel to one another around a square bale 3.
  • the square bale 3 can consist, for example, of plastic waste, cellulose or waste paper.
  • This dewiring machine has a large number of components, with only the components essential for understanding the invention being described below.
  • the device 1 has a conveyor 4, for example a walking floor conveyor, with which the cuboid bale 3 is conveyed into a processing position under a clamping and cutting device 5 for clamping and cutting open the strapping wires 2.
  • the location and direction information such as "up”, “down", each relate to the intended operating position of the device 1 on a horizontal surface.
  • the clamping and cutting device 5 is connected to a drive or positioning unit 6, with which the clamping and cutting device 5 moves along a first axis (see double arrow 7 in 2 ) is moved back and forth in a horizontal direction perpendicular to the strapping wire and along a second axis (cf. double arrow 8 in 2 ) in the vertical direction perpendicular to the top of the square bale 3 can be moved up and down.
  • the positioning unit 5 has at least one first linear drive 9, for example with a belt drive, for the movement in the first axis and at least one second linear drive 10, for example with at least one cylinder-piston drive, for the movement in the second axis.
  • two first linear drives 9 and two second linear drives 10 are provided in order to move two clamping and cutting devices 5 of the same type.
  • the clamping and cutting device 5 is also connected to a sensor unit 11, with which a position of the strapping wire 2 on the cuboid bale 3 is detected in order to be able to position the clamping and cutting device 5 in the desired position relative to the strapping wire 2 with the aid of the positioning unit 6 .
  • the sensor unit 11 can have an inductive sensor strip 12 which is attached to a bracket 13 .
  • a processing or processing head 14 of the clamping and cutting device 5 can be seen in detail.
  • the process head 14 has an outer cylinder 15 and an inner cylinder 16 .
  • the outer cylinder 15 and the inner cylinder 16 are arranged coaxially around a central axis 17 .
  • Both the outer cylinder 15 and the inner cylinder 16 are designed as hollow cylinders.
  • the inner cylinder 16 is arranged entirely inside the outer cylinder 15 .
  • Fixed to the top of the inner cylinder 16 is a shaft 16A which is rotatably connected to the outer cylinder 15 via two ball bearings 16B.
  • the shaft 16A and thus the inner cylinder 16 is connected via a coupling part 18, for example a hexagon, to a rotary drive 19 (cf. Figures 20 to 22 ) connected.
  • the inner cylinder 16 can be rotated within the non-rotatable outer cylinder 15 about the central or rotational axis 17 (see arrow 19 in 6 ).
  • the outer cylinder 15 has two opposite outer cylinder receiving grooves 20
  • the inner cylinder 16 has two inner cylinder receiving grooves 21 .
  • the outer cylinder receiving grooves 20 and the inner cylinder receiving grooves 21 form depressions on the annular end faces of the outer 15 and inner cylinder 16 and thus jump upwards (away from the top of the square bale 3).
  • the wire strap 2 can be accommodated therein.
  • a clamping and cutting gap 22 is formed, in which the strapping wire 2 by rotating the inner cylinder 16 relative to the Outer cylinder 15 can be clamped by means of the rotary drive 19 and severed.
  • the process of clamping and cutting the strapping wire 2 is from the Figures 6 to 19 out.
  • the process head 14 is first positioned on the cuboid bale 3 with the aid of the sensor unit 11 and the positioning unit 6 in such a way that the strapping wire 2 is received in a receiving position within the outer cylinder receiving grooves 20 and the inner cylinder receiving grooves 21 .
  • the process head 14 is pressed against the cuboid bale 3 .
  • the inner cylinder accommodating grooves 21 are aligned with the outer cylinder accommodating grooves 20 and are thus located at the same circumferential positions (0° position).
  • the strapping wire 2 is neither clamped nor cut open.
  • the rotary drive 19 is then actuated, which rotates the inner cylinder 15 relative to the outer cylinder 16 in the direction of rotation 19 .
  • 8 and 9 show the position of the process head 14 when rotated by 10° compared to the initial position in Figures 6, 7 .
  • the inner cylinder 16 has a ramp 23A adjacent to the inner cylinder receiving grooves 21 for lifting the strapping wire 2 from the top of the square bale 3 . With the rotation to the 10° position, the ramps 23A move towards the strapping wire 2, but are still away from it.
  • the outer cylinder accommodating grooves 20 are delimited by side faces 23B running perpendicularly to the end face of the outer cylinder (ie perpendicularly to the top side of the barrel).
  • the outer cylinder receiving grooves 20 are rectangular in the example shown.
  • the ramps 23A have retracted under the strapping wire 2 with a total rotation of 20° and have lifted the strapping wire 2 from the top of the cuboid bale 3 .
  • the strapping wire 2 was pulled into the clamping and cutting gap 22 on one side of the process head 14 when the inner cylinder 16 was rotated by a total of 40° (all angle specifications refer to the initial position), whereby a clamping force that increases with the angle of rotation is exerted on the Strapping wire 2 is exercised.
  • the strapping wire 2 is in a clamping position.
  • the strapping wire 2 is arranged above a constriction 25 of the clamping and cutting gap 22 which extends on the underside of the outer cylinder 15 . As a result, the strapping wire 2 is secured against slipping out of the clamping and cutting gap 22 downwards.
  • a blade 26 on the inner cylinder 16 and a counter blade 27 on the outer cylinder 15 On the other side of the process head 14 there is a blade 26 on the inner cylinder 16 and a counter blade 27 on the outer cylinder 15 .
  • the blade 26 and the counter blade 27 can each be formed by a hard metal part which can be screwed to the inner 16 or outer cylinder 15 .
  • the cutting edge 26 on the inner cylinder 16 moves towards the counter blade 27 on the outer cylinder 15 until the strapping wire 2 gets between the cutting edge 26 and the counter blade 27.
  • the strapping wire 2 was cut through by the interaction of the cutting edge 26 with the counter cutting edge 27 in a cutting position during a further rotation of the inner cylinder 16 by--in this example--a total of 50°. Meanwhile, the strapping wire 2 is held securely on the other side of the process head 14 by the deformation in the clamping and cutting gap 22 .
  • the strapping wire 2 is held securely in the clamping and cutting gap 22 on one side of the process head 14 and is cut open on the other side of the process head 14 .
  • the strapping wire 2 that has been cut open and clamped can then be wound up.
  • a further rotary drive 28, shown schematically in 18 drawn be provided, which is set up to rotate the outer cylinder 15 and the inner cylinder 16 together in the clamped and cut state of the strapping wire 2 in order to wind the strapping wire 2 on the lateral surface of the outer cylinder 15 .
  • a winding device 29 separate from the clamping and cutting device 5 is provided for winding up the strapping wire 2 cut open with the clamping and cutting device 5 .
  • Figures 20 to 22 show those parts of the device 1 which cause the up and down movement of the process head 14 and the rotation of the inner cylinder 16 to the outer cylinder 15.
  • the device 1 has a horizontally movable frame with a lowering frame 30 and a holding frame 31 .
  • a toothed shaft 32 is arranged on the lowering frame 30 and is non-rotatably connected to the process head 14 at the lower end.
  • the frame is first moved in a horizontal direction until the process head is positioned over the strapping. Thereafter, the lowering frame 30 is lowered relative to the holding frame 31 on which the rotary drive 19 is arranged.
  • the rotary drive 19 has an actuator 33, here a pneumatic drive, which acts on the toothed shaft 32 via a lever arrangement 34 in order to rotate the inner cylinder 16 relative to the outer cylinder 15.
  • FIG. 23 shows the winding device 29, which in the embodiment variant shown has two winding mandrels 35 which are attached to a turntable 36.
  • the turntable 36 is using a rotary shaft 37 of a rotary drive device to wind the wire strap 2 placed between the two winding mandrels 35 onto the winding mandrels 35 .
  • the clamped and cut strapping wire is brought to the winding device 29 with the aid of the positioning device 6 .

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
EP21202260.2A 2021-10-12 2021-10-12 Dispositif de découpe et d'enlèvement d'un enrubanage Withdrawn EP4166465A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP21202260.2A EP4166465A1 (fr) 2021-10-12 2021-10-12 Dispositif de découpe et d'enlèvement d'un enrubanage
PCT/EP2022/078338 WO2023062054A1 (fr) 2021-10-12 2022-10-12 Dispositif de coupe et de retrait d'un cerclage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP21202260.2A EP4166465A1 (fr) 2021-10-12 2021-10-12 Dispositif de découpe et d'enlèvement d'un enrubanage

Publications (1)

Publication Number Publication Date
EP4166465A1 true EP4166465A1 (fr) 2023-04-19

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EP21202260.2A Withdrawn EP4166465A1 (fr) 2021-10-12 2021-10-12 Dispositif de découpe et d'enlèvement d'un enrubanage

Country Status (2)

Country Link
EP (1) EP4166465A1 (fr)
WO (1) WO2023062054A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005444A1 (fr) * 1978-05-16 1979-11-28 B + G-Fördertechnik G.m.b.H. Tête d'enroulement
DE102004046117A1 (de) * 2004-09-23 2006-04-06 Voith Paper Patent Gmbh Wickelvorrichtung zur Entfernung von aufgeschnittenem Bindematerial
AT515162B1 (de) 2013-11-21 2016-08-15 Cts Gmbh Competence For Technical Solutions Roboterwerkzeug zur automatisierten Entfernung von Verpackungsumgreifungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0005444A1 (fr) * 1978-05-16 1979-11-28 B + G-Fördertechnik G.m.b.H. Tête d'enroulement
DE102004046117A1 (de) * 2004-09-23 2006-04-06 Voith Paper Patent Gmbh Wickelvorrichtung zur Entfernung von aufgeschnittenem Bindematerial
AT515162B1 (de) 2013-11-21 2016-08-15 Cts Gmbh Competence For Technical Solutions Roboterwerkzeug zur automatisierten Entfernung von Verpackungsumgreifungen

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Publication number Publication date
WO2023062054A1 (fr) 2023-04-20

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