EP4043166A1 - Dispositif de coupe, ainsi que procédé - Google Patents

Dispositif de coupe, ainsi que procédé Download PDF

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Publication number
EP4043166A1
EP4043166A1 EP22154245.9A EP22154245A EP4043166A1 EP 4043166 A1 EP4043166 A1 EP 4043166A1 EP 22154245 A EP22154245 A EP 22154245A EP 4043166 A1 EP4043166 A1 EP 4043166A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting device
base
receiving
cutting blade
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Withdrawn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
EP22154245.9A
Other languages
German (de)
English (en)
Inventor
Steffen Kalkhof
Christoph Pekal
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.)
Frimo Group GmbH
Original Assignee
Frimo Group 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 Frimo Group GmbH filed Critical Frimo Group GmbH
Publication of EP4043166A1 publication Critical patent/EP4043166A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • B26D7/086—Means for treating work or cutting member to facilitate cutting by vibrating, e.g. ultrasonically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/125—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/157—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis
    • B26D1/16—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter rotating about a movable axis mounted on a movable arm or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/08—Making a superficial cut in the surface of the work without removal of material, e.g. scoring, incising
    • B26D3/085—On sheet material
    • C—CHEMISTRY; METALLURGY
    • C14—SKINS; HIDES; PELTS; LEATHER
    • C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
    • C14B5/00—Clicking, perforating, or cutting leather

Definitions

  • the invention relates to a cutting device, in particular an ultrasonic cutting device or scraper cutting device, a processing system with such a cutting device and a method for cutting a material, in particular a film-like or thin-walled material, such as artificial or natural leather, a skin, in particular made of a plastic or rubber or something similar.
  • Ultrasonic cutting devices are known for cutting materials such as artificial or natural leather.
  • the EP 2 347 870 A1 shows, for example, a device for producing a tear line in the back of a covering material, the covering material preferably consisting at least in sections of plastic, in particular an interior lining material for vehicles.
  • the device comprises a support, by which the covering material can be supported, and a spaced-apart above it, which is motor-driven in the direction of the support and reciprocable tooling submersible into the backside of the liner material and movable forwardly following the path of the desired tear line.
  • the device is characterized in that the tool is formed by a chisel, the back and forth movement of which is effected at a frequency of 16 to 70 kHz, preferably 18 to 40 kHz.
  • one or two cutting directions are available for guiding the cutting blade, depending on the design of the blade (bevelled on one side or on both sides).
  • the robot can make a change of direction by reorienting the cutter, and hence the cutting blade operated by the cutter, through axis movement of the robot.
  • the axis limits of the robot can be reached quickly, so that a movement to reorient the robot arm outside of the material to be cut is necessary in order to be able to introduce certain cutting lines.
  • the cutting blade is pulled out of the material to be cut, one or more axes of the robot are rotated and the cutting blade then pierces the material to be cut again.
  • the invention aims to provide a cutting device with which the cycle time can be increased in a cutting operation.
  • Such a cutting device is described in claim 1. Further preferred embodiments are listed in the dependent claims. Furthermore, the invention relates to a processing system with such a cutting device and a method, it being preferred that such a cutting device or such a processing system is used in this method.
  • the cutting device comprises a base which has or accommodates a receiving device for receiving a cutting blade, and a drive unit which is set up to rotate the receiving device about an axis.
  • the cutting device can thus be mounted on a tool holder such that it can be rotated through a certain angle, for example 90°.
  • the rotatability is provided about a longitudinal axis of the cutting device, so that a cutting edge of a cutting blade held by the holding device can be arranged in different alignments.
  • the cutting direction of the cutting blade can be determined, for example, before it dips into the material to be cut. In this way, it is possible to process the specified cutting line in one operation without intermediate reorientation movements.
  • the cycle time, blade wear due to the targeted use of both blade halves and accessibility can be improved with this swiveling tool holder.
  • Cutting means at least partially severing or perforating a material to be cut.
  • a separating cut or a weakening line can be made on or in a material to be cut by means of the cutting device.
  • a line of weakness in a synthetic leather material used to trim an interior component of a passenger car.
  • the receiving device can be a section of the base of the cutting device, or the receiving device is received or held by the base, in particular in a movable manner. It is also preferred that the receiving device receives a cutting blade, in particular a cutting blade ground on one or both sides.
  • the cutting device further comprises at least one clamping device for locking the base.
  • the base and thus the receiving device, can be rotated into a specific position and then locked by means of the at least one clamping device.
  • the base is thus secured against further rotation and cutting can be carried out in a corresponding cutting direction.
  • the cutting device has at least two clamping devices. It can also be provided that the clamping devices act on opposite sides of the base in order to lock the base.
  • the at least one clamping device can be actuated pneumatically or hydraulically. Such a clamping device can bring about a secure locking of the base.
  • the at least one clamping device comprises a clamping jaw which is pressed against the base when the clamping device is actuated.
  • the base and thus also a cutting blade, can be locked in a specific orientation, so that cutting can be carried out in the specified direction.
  • the cutting device has a plurality of holding elements which accommodate the base and the drive unit.
  • the base can be held by means of a first holding element which, in the operating position of the cutting device, is provided on a vertically lower portion of the base.
  • a second and/or third holding element can be provided on a lower section of the base in the vertical direction when the cutting device is in the operating position.
  • the drive unit is a stepping motor.
  • an angularly precise rotary movement can be carried out and the receiving device can thus be arranged with corresponding precision.
  • the cutting device comprises a sonotrode which is accommodated on or in the base.
  • the cutting device can be operated as an ultrasonic cutting device.
  • the arrangement of the sonotrode on or in the base enables a compact design of the cutting device.
  • the sonotrode is arranged at a distance from the drive unit.
  • the sonotrode can be arranged in a section between the receiving device and the drive unit.
  • the recording device can be driven in an oscillating manner by means of the sonotrode.
  • the drive unit can cause the base and the sonotrode to rotate.
  • the sonotrode can be set up to generate an oscillating movement in the range from 18 to 40 kHz, in particular in the range from 30 to 40 kHz.
  • a cutting blade accommodated by the cutting device can dip into a material to be cut and follow the course of the desired cutting line, which is to be formed, for example, as a tear line, are moved following.
  • the cutting device is designed as a scraper cutting device, with which a cutting blade is guided in a translational movement in order to make a cut on a material.
  • the processing system comprises a cutting device according to one of the preceding aspects and a handling device on which the cutting device is attached.
  • the handling device can be in the form of a linear robot or a multi-axis robot, for example a 6-axis robot.
  • a further alignment of the cutting blade can be adjusted by means of the cutting direction without performing a movement with the robot arm (not shown).
  • the processing system can be operated in such a way that the cutting device is rotated through a specific angle, for example 90°, independently of a movement of the handling device (in particular a handling arm of the handling device). This results in additional cutting directions of a cutting blade accommodated by the cutting device. In particular, it is possible to process a defined cutting line in one operation without intermediate reorientation movements.
  • the cycle time, the blade wear due to the Targeted double-sided use of the blade halves and accessibility can be improved with this swiveling tool holder.
  • a control device is also provided, which is set up to confirm the drive unit.
  • a rotary movement of the cutting device can thus be carried out independently of a movement of the handling device.
  • the processing system comprises a receiving device for receiving a material, in particular a film-like or thin-walled material, such as artificial or natural leather, a skin, in particular made of plastic or rubber, or the like.
  • a material in particular a film-like or thin-walled material, such as artificial or natural leather, a skin, in particular made of plastic or rubber, or the like.
  • the invention also provides a method for cutting a material, in particular a film-like or thin-walled material.
  • a cutting device or a processing system according to one of the preceding aspects can be used as part of the method.
  • the method can be used to make a separating cut or a weakening line in a material to be cut.
  • a material to be cut can be an artificial leather material that is used to cover an interior component of a passenger car.
  • the method comprises the steps of causing relative movement between the cutting device and the material to be cut in a first direction, thereby cutting the material, rotating the cutting blade, and causing relative movement between the cutting device and the material in a second direction, thereby cutting the material .
  • the cut made may be along a cutting line that is straight or curved. It is also possible for the cutting line to have sections aligned at an angle to one another, for example rectilinear and/or curved.
  • the cutting blade is fed out of the material before rotating and returned into the material after the cutting blade is rotated.
  • the cutting device 10 is formed as an ultrasonic cutting device which, by reciprocatingly moving a cutting blade 100 at a frequency of 18 to 40 kHz, for example 35 kHz, a sheet-like or thin-walled material such as artificial or natural leather, a skin made of a plastic or rubber, or the like. During the oscillating movement of the cutting blade 100, this cutting blade 100 is guided along a cutting direction.
  • the material to be cut can be partially or completely severed by means of the cutting device 10 . It is also possible to introduce a perforation along a specific line in order to specifically weaken the material in this area.
  • the cut made runs along a cut line which runs straight or curved or has sections aligned at an angle to one another.
  • the cutting device 10 includes retaining elements 11a-11c which are used to attach the cutting device 10 to an offset tool holder 50.
  • a connection plate 60 is in turn provided on the tool holder 50 in order to attach the tool holder 50 to a six-axis robot arm (not shown).
  • the cutting device 10 comprises a base 12 which is designed in sections as a hollow cylinder, the base 12 receiving a sonotrode 14 in a first area 12a and being closed on one side with a cover plate 13 .
  • a cover plate 13 Through the cover plate 13 extends a ram 15 on which a receiving device 16 for receiving a cutting blade 100 is provided.
  • the ram 15 is driven by the sonotrode 14 in an oscillating movement with a frequency in the range from 18 to 40 kHz, for example with a frequency of 35 kHz.
  • the cutting blade 100 is designed as a cutting blade ground on one side. However, it is also possible to accommodate a cutting blade ground on both sides or another cutting or perforating tool in the receiving device 16 .
  • a connecting flange 17 which is connected to a shaft 18 is provided.
  • the shaft 18 can be rotated by a stepper motor 20 (drive unit).
  • a stepper motor 20 drive unit
  • the second portion 12b of the base 12 includes an opening 12c to allow access to an interior portion of the second portion 12b of the base 12. As shown in FIG.
  • the stepping motor 20 is held by the second holding member 11b and the third holding member 11c so that the stepping motor 20 is fixed to the tool holder 50 .
  • the cutting blade 100 can be aligned in certain directions in this way.
  • the cutting blade can be rotated through 90° so that, in addition to a specific orientation of the cutting blade 100 along a cutting direction, a further orientation of the cutting blade 100 can be set without performing a movement with the robotic arm (not shown).
  • the cutting direction of the cutting blade 100 is usually determined prior to entering the material to be cut. Without additional reorientation movements
  • Cutting line of the cutting blade 100 can be defined by a rotary movement with the stepping motor 20.
  • the cutting device 10 comprises a first clamping device 30a and a second clamping device 30b, which are accommodated by the first holder 11a and can act on opposite sides of the base 12.
  • the clamping devices 30a, 30b each comprise a clamping jaw 31a, 31b which can be guided towards or away from the base 12 by a piston 32a, 32b.
  • the clamping jaws 31a, 31b press against the base 12, the base 12, and thus also the cutting blade 100, is locked in a specific orientation, so that cutting can be carried out in the specified cutting direction.
  • the clamping devices 30a, 30b are first released and the respective clamping jaw 31a, 31b is thus disengaged from the base 12. Subsequently, the stepping motor 20 can perform a rotational movement about the axis of the base 12 of the cutting device 10, by which the cutting edges of the cutting blade 100 are aligned in a certain direction. Once the cutting blade 100 has reached the desired orientation, locking of the base 12 is performed by means of the clamps 30a, 30b to fix the base 12 in place. The cutting device 10 is now ready to make a cut in the newly set orientation of the cutting blade 100 .
  • a drive unit is designed as a stepping motor 20 .
  • such a drive unit can also be actuated pneumatically or hydraulically in order to carry out a rotary movement.
  • attachment plate 60 is provided to attach the cutting device 10 to a six-axis robot arm, an attachment plate that can attach the cutting device 10 to a linear robot may also be provided.
  • the embodiment is designed as an ultrasonic cutting device.
  • the cutting device can also be designed as a scraper cutting device.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Cutting Processes (AREA)
  • Treatment Of Fiber Materials (AREA)
EP22154245.9A 2021-02-15 2022-01-31 Dispositif de coupe, ainsi que procédé Withdrawn EP4043166A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102021201395.3A DE102021201395A1 (de) 2021-02-15 2021-02-15 Schneidvorrichtung sowie Verfahren

Publications (1)

Publication Number Publication Date
EP4043166A1 true EP4043166A1 (fr) 2022-08-17

Family

ID=80123200

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22154245.9A Withdrawn EP4043166A1 (fr) 2021-02-15 2022-01-31 Dispositif de coupe, ainsi que procédé

Country Status (2)

Country Link
EP (1) EP4043166A1 (fr)
DE (1) DE102021201395A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087290A (en) * 1980-11-14 1982-05-26 Gerber Garment Technology Inc Ultrasonic apparatus and method for cutting sheet material
EP2327520A1 (fr) * 2009-11-30 2011-06-01 GEISS Aktiengesellschaft Machine outil, agencement de machine outil ainsi que procédé de fonctionnement d'un agencement de machine outil
DE102009054604A1 (de) * 2009-12-14 2011-06-16 Frimo Group Gmbh Verfahren und Vorrichtung zum teilweisen Durchtrennen eines Werkstücks
EP2347870A1 (fr) 2010-01-25 2011-07-27 FRIMO Group GmbH Dispositif de fabrication d'une ligne de déchirement
DE102015007998A1 (de) * 2015-06-24 2016-12-29 Capex lnvest GmbH Vorrichtung und Verfahren zum Durchdringen eines flächenhaften, vorzugsweise biegeschlaffen Körpers

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2114082T3 (es) 1994-04-26 1998-05-16 Investronica Sa Dispositivo piloto para una cuchilla suspendida de una maquina de corte para cortar material laminar.
DE19630096C2 (de) 1996-07-25 1998-07-09 Georg Geis Maschinenfabrik Vorrichtung zum räumlichen Schneiden von dünnwandigen Formteilen
US7798042B2 (en) 2006-05-08 2010-09-21 Gerber Scientific International, Inc. Reciprocated knife having an integral tangent axis orientation drive
DE102020105416B4 (de) 2020-02-28 2022-06-15 bullmer GmbH Schneidkopf für eine zuschnittmaschine

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2087290A (en) * 1980-11-14 1982-05-26 Gerber Garment Technology Inc Ultrasonic apparatus and method for cutting sheet material
EP2327520A1 (fr) * 2009-11-30 2011-06-01 GEISS Aktiengesellschaft Machine outil, agencement de machine outil ainsi que procédé de fonctionnement d'un agencement de machine outil
DE102009054604A1 (de) * 2009-12-14 2011-06-16 Frimo Group Gmbh Verfahren und Vorrichtung zum teilweisen Durchtrennen eines Werkstücks
EP2347870A1 (fr) 2010-01-25 2011-07-27 FRIMO Group GmbH Dispositif de fabrication d'une ligne de déchirement
DE102015007998A1 (de) * 2015-06-24 2016-12-29 Capex lnvest GmbH Vorrichtung und Verfahren zum Durchdringen eines flächenhaften, vorzugsweise biegeschlaffen Körpers

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Publication number Publication date
DE102021201395A1 (de) 2022-08-18

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