EP0389806A1 - Table de travail avec un support métallique pour une installation de coupe automatique - Google Patents

Table de travail avec un support métallique pour une installation de coupe automatique Download PDF

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Publication number
EP0389806A1
EP0389806A1 EP90103610A EP90103610A EP0389806A1 EP 0389806 A1 EP0389806 A1 EP 0389806A1 EP 90103610 A EP90103610 A EP 90103610A EP 90103610 A EP90103610 A EP 90103610A EP 0389806 A1 EP0389806 A1 EP 0389806A1
Authority
EP
European Patent Office
Prior art keywords
metal strips
work table
table according
material support
cutting material
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.)
Ceased
Application number
EP90103610A
Other languages
German (de)
English (en)
Inventor
Klaus Biervert
Wolfgang Bruder
Gerd Küpper
Gerald Hess
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.)
Duerkopp Systemtechnik GmbH
Original Assignee
Duerkopp Systemtechnik 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
Priority claimed from DE3910273A external-priority patent/DE3910273C1/de
Application filed by Duerkopp Systemtechnik GmbH filed Critical Duerkopp Systemtechnik GmbH
Publication of EP0389806A1 publication Critical patent/EP0389806A1/fr
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet
    • B26F3/008—Energy dissipating devices therefor, e.g. catchers; Supporting beds therefor

Definitions

  • the invention relates to a work table with a metallic cutting material support for an automatic cutting system on which materials are cut by means of non-mechanical cutting tools.
  • DE-AS 28 13 498 discloses a device for cutting a stack of flat materials with a fluid jet.
  • the cutting material underlay of this cutting device consists of mutually perpendicular and parallel thin support plates which have a cutting-like surface.
  • Such a honeycomb design of a support plate structure is known, for example, under the name "Honeycomb", which is easy to produce from aluminum.
  • honeycomb structure It is not technically feasible to manufacture such a honeycomb structure from sheet steel in the manner of "honeycomb". When punching or drilling, the wall thickness that can be achieved is not thin enough to avoid back splash effects.
  • the invention is therefore based on the object of further developing a generic work table in such a way that the cutting material base has a high level of stability, reliably and effectively prevents back-spray effects and is simple and inexpensive to produce.
  • any desired size of the passage openings which are absolutely necessary in order to be able to discharge the fluid jet into the collecting trough of the work table, can be realized in a simple manner, since this is only dependent on the wave form of the metal strips.
  • the work table according to claim 2 has the advantage that only a single type of metal strip can be used and the contact surface between the individual strips is increased.
  • the embodiment according to claim 3 allows a simple exchange of damaged metal strips.
  • the service life of the material to be sliced is increased, since only cuts perpendicular to one another can be made by the digital control of the cutting tool. Even if the corresponding steps are carried out very small, they deviate from the main direction of the material to be cut, and the cutting beam hits the joint of two metal strips less frequently.
  • FIG. 1 and 1a show a numerically controlled high-pressure fluid jet cutting system in a partially simplified form, which essentially consists of: the work table 8, the cutting material support 3 arranged on the work table 8, the high-pressure nozzle 11 which is mounted longitudinally displaceably above the work table 8 Cutting portal 9 and the control system 10.
  • the work table 8 the cutting material support 3 arranged on the work table 8
  • the high-pressure nozzle 11 which is mounted longitudinally displaceably above the work table 8 Cutting portal 9 and the control system 10.
  • identical components are provided with the same item numbers.
  • the material 12 to be cut is placed on the cutting material support 3 and the individual patterns M are cut out by means of the fluid jet flowing through the high-pressure nozzle 11.
  • the work table 8 has a rectangular, circumferential, laterally closed frame 13. Struts 17 are attached within this frame 13, with which a collecting trough 4, which delimits the work table 8 downwards and in which the cutting fluid converges after the cutting, is connected. Above the drip pan 4, on the inwardly projecting flanges 14 which are arranged on the frame 13, there are commercially available grids 15 consisting of longitudinal and transverse struts welded to one another. These gratings 15 serve on the one hand as a carrier material for the cutting material support 3 and are arranged within the frame 13 at such a height that sufficient space remains between them and the bottom of the collecting trough 4 in order to effectively discharge the used cutting fluid.
  • At least one single-layer support of granules 1 enclosed in cages 16 is placed on the gratings 15 and the cages 16 lie on them Cutting material support 3.
  • the further design of such a work table 8 is known and described for example in DE-C-38 40 072.
  • further gratings 2 can be arranged between the cages 16 and the cutting material support 3.
  • the metal cutting material support 3 consists of several strips 3a, 3b made of sheet steel that are glued or soldered together.
  • a corrugated metal strip 3a is alternately connected to a non-corrugated strip 3b.
  • a sharp-edged strip (triangular or in the form of a square wave) can of course also be used.
  • Each of the strips 3a, 3b has a length corresponding to the worktable width B and an ultimately arbitrary width.
  • the material thickness of each metal strip 3a, 3b is less than 1/10 millimeter; it has proven to be very advantageous to use stainless steel with a thickness of 0.07 mm.
  • the metal strips 3a, 3b can be hardened in a known manner.
  • the width of the strips 3a, 3b is dependent on the desired or necessary thickness D of the material to be sliced 3, which in turn is dependent on the material to be sliced 12. In practice, a strip width of approximately 20 mm has proven useful for cutting flexible materials such as textiles or leather. As many metal strips 3a, 3b are glued to one another as the length of the work table 8 requires.
  • the grating 2 consists of longitudinal struts 6 and cross struts 7 which are welded to one another.
  • bolts 5 projecting vertically upwards are welded from the outside at the crossing points of the longitudinal and transverse struts 6a, 6b, 7.
  • the upstanding edges 6 ', 7' of the struts 6, 7 are ground so that they end at an acute angle, the same applies to the ends of the bolts 5th
  • the inner longitudinal struts 6 are of a lower height than the cross struts 7 (cf. FIG. 9).
  • the material to be cut 3 is arranged on the grating 2 by alternately packing together corrugated metal strips 3a and non-corrugated metal strips 3b.
  • the metal strips 3a, 3b are firmly packed together that the grating 2 is completely covered.
  • the metal strips 3a, 3b are placed on the cross struts 7.
  • the pack advantageously begins and ends with a corrugated strip 3a, the troughs T being applied to the bolts 5. Due to the (in relation to the metal strip 3a, 3b) compressive force acting in the transverse direction or the frictional force acting in the longitudinal direction between the metal strip 3a, 3b, the material to be cut is dimensionally stable. It is possible to magnetize the grating 2, so that the metal strips 3a, 3b, 3c are additionally held by magnetic forces.
  • the length of the bolts 5 is selected so that they do not protrude beyond the cutting material support 3, preferably even stand behind it.
  • the cutting material support 3 is divided into several individual segments, ie a plurality of packed grids 2 are arranged one behind the other, each segment being able to consist, for example, of fifty metal strips 3a, 3b. This facilitates handling and access to the inside of the work table 8.
  • the corrugated strips 3a are produced in a known manner by rolling between two gear wheels.
  • the pitch or the diameter of the gearwheels is selected when rolling, a large pitch leading to a fine-pored surface and a small pitch leading to a large-pore surface.
  • the hole size depends on the one hand on which material is to be cut, since with a large-pore surface there are fewer support points for the material to be cut 12 and on how quickly the fluid jet has to be diverted from the work surface.
  • the metal strips 3a, 3b, 3c are drilled through their longitudinal extension y, so that the fluid not only through the trough T, into which it enters directly, but also through the adjacent troughs can drain off. This is particularly appropriate if the hole pitch is small in diameter is desired, in which the capillary effect naturally limits the flow rate of the fluid. 7 and 13, these bores 28 are shown by way of example.
  • the cutting material base 3 can be cast with a synthetic resin 20, so that some troughs T are completely filled with synthetic resin 20.
  • This casting with synthetic resin 20 ensures that the cutting material support 3, in the event that individual connection points 30 between the metal strips 3a and 3b are cut by long use, is not torn apart when the high-energy cutting jet 18 is again in this no longer connected point meets. Potting is particularly recommended when the metal strips 3a, 3b have not been soldered to one another.
  • 4 and 6 show the principle of a further embodiment of the cutting material support 3. Because of the identity of the embodiment according to FIG. 3, the same item numbers are used here in part, since the structure already described also applies to these embodiments.
  • through holes 21 are provided on the longitudinal edges R of the cutting material base 3, each filled with synthetic resin 20, into which screw bolts 22 can be inserted and a compressive stress can be generated in the cutting material base 3 by unscrewing a nut 23, thereby ensuring security against tearing of the cutting material base 3 or Fraying from their surface is increased.
  • a tensile stress in the transverse direction can also be used to further increase the stability and stability (y-direction) are applied in each individual metal strip 3a, 3b, in which tie rods 26 (for example wire cables 25 provided with an eyelet 24) are fastened to the bolts 22 located within the longitudinal edges on both sides and these tie rods 26 are attached to corresponding bolts (not shown here)
  • tie rods 26 for example wire cables 25 provided with an eyelet 24
  • tie rods 26 for example wire cables 25 provided with an eyelet 24
  • the bolts 22 located within the longitudinal edges on both sides and these tie rods 26 are attached to corresponding bolts (not shown here)
  • Counter bearings within the work table 8 can be clamped.
  • 11 shows a further possibility of fixing the cutting material support 3 at its edges by placing a U-shaped profile 19 around the grating 2 and the cutting material support 3 and securing it with screws 27. It should be taken into account that only two of the metal strips 3a, 3b are shown in the drawing of FIGS. 4 and
  • FIGS. 12 and 13 show a further exemplary embodiment of the invention.
  • metal strips 3c which have the shape of a "square wave" are used. This shape is shown in the enlarged detail.
  • Fig. 14 clearly.
  • Wave troughs T1 and wave crests W1 have different pitch lengths a, b.
  • the following applies on the drawing: b 2a.
  • the metal strips 3c are placed against one another in such a way that a wave trough T1 is supported on a wave crest W1.
  • the connection between the individual metal strips 3c can also be established by gluing, soldering or another of the type described above.
  • the cutting material support 3 can also rest on a substructure made of tensioned and tensioned metal strips (not shown here).
  • a substructure made of tensioned and tensioned metal strips In this case, straight metal strips are clamped in a metal frame in the longitudinal direction at a parallel distance from one another. Other metal strips have slots at a distance from the braced metal strips, so that the former can be plugged onto the latter in the transverse direction.
  • the cutting material support 3 can then be placed on this. If the metal strips described above are chosen wide enough, the grating 15, which is arranged above the collecting trough 14, could also be omitted.
  • the cutting material support 3 can also be configured as a circulating conveyor belt.
  • the individual segments are connected to one another in an articulated manner, so that a kinking and change of direction on the deflecting rollers to be arranged in this case in front of and behind the work table 8, which can also serve as a drive, is made possible.
  • the design of such a conveyor belt has been known for a long time and therefore does not require any special description here.
EP90103610A 1989-03-30 1990-02-24 Table de travail avec un support métallique pour une installation de coupe automatique Ceased EP0389806A1 (fr)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
DE3910273 1989-03-30
DE3910273A DE3910273C1 (en) 1989-03-30 1989-03-30 Workbench with a metallic cutting-material support for an automatic cutting installation
DE3929536 1989-09-06
DE3929536 1989-09-06
DE19893932850 DE3932850A1 (de) 1989-03-30 1989-10-02 Arbeitstisch mit einer metallischen schneidgutunterlage fuer eine automatische schneidanlage
DE3932850 1989-10-02

Publications (1)

Publication Number Publication Date
EP0389806A1 true EP0389806A1 (fr) 1990-10-03

Family

ID=27199322

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90103610A Ceased EP0389806A1 (fr) 1989-03-30 1990-02-24 Table de travail avec un support métallique pour une installation de coupe automatique

Country Status (3)

Country Link
EP (1) EP0389806A1 (fr)
JP (1) JPH02274497A (fr)
DE (1) DE3932850A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0838314A1 (fr) * 1996-10-24 1998-04-29 Atom S.p.A. Dispositif de manipulation et support pour machines de coupe
WO2017071697A1 (fr) * 2015-10-30 2017-05-04 Nienstedt Gmbh Dispositif de découpage de produits alimentaires au moyen d'un jet de fluide

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19603933A1 (de) * 1996-02-03 1997-08-14 Schenk Werkzeug Und Maschinenb Vorrichtung zur Bearbeitung von Platten
DE10108230B4 (de) * 2001-02-21 2005-08-25 Gunther Marcus Dürner Vorrichtung zum Schneiden von Werkstücken mittels eines Hochdruck-Hydraulikstrahls

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877334A (en) * 1973-11-23 1975-04-15 Gerber Garment Technology Inc Method and apparatus for cutting sheet material with a fluid jet
DE2813498B2 (de) * 1977-10-07 1981-05-07 Gerber Garment Technology, Inc., 06074 South Windsor, Conn. Vorrichtung zum Schneiden eines Flachmaterialstapels

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3877334A (en) * 1973-11-23 1975-04-15 Gerber Garment Technology Inc Method and apparatus for cutting sheet material with a fluid jet
DE2813498B2 (de) * 1977-10-07 1981-05-07 Gerber Garment Technology, Inc., 06074 South Windsor, Conn. Vorrichtung zum Schneiden eines Flachmaterialstapels

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0838314A1 (fr) * 1996-10-24 1998-04-29 Atom S.p.A. Dispositif de manipulation et support pour machines de coupe
WO2017071697A1 (fr) * 2015-10-30 2017-05-04 Nienstedt Gmbh Dispositif de découpage de produits alimentaires au moyen d'un jet de fluide
CN108602197A (zh) * 2015-10-30 2018-09-28 尼恩斯德特有限公司 用于借助于液体射束剖切食物的设备
US10919174B2 (en) 2015-10-30 2021-02-16 Nienstedt Gmbh Device for cutting food using a liquid jet

Also Published As

Publication number Publication date
DE3932850A1 (de) 1991-03-07
JPH02274497A (ja) 1990-11-08

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