EP0371394B1 - Schneidtisch - Google Patents

Schneidtisch Download PDF

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Publication number
EP0371394B1
EP0371394B1 EP89121631A EP89121631A EP0371394B1 EP 0371394 B1 EP0371394 B1 EP 0371394B1 EP 89121631 A EP89121631 A EP 89121631A EP 89121631 A EP89121631 A EP 89121631A EP 0371394 B1 EP0371394 B1 EP 0371394B1
Authority
EP
European Patent Office
Prior art keywords
cutting
cages
fluid jet
cutting table
pressure fluid
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.)
Expired - Lifetime
Application number
EP89121631A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0371394A2 (de
EP0371394A3 (en
Inventor
Gerd Küpper
Wolfgang Bruder
Klaus Biervert
Siegfried Zabinski
Heiner Geers
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
Application filed by Duerkopp Systemtechnik GmbH filed Critical Duerkopp Systemtechnik GmbH
Priority to AT89121631T priority Critical patent/ATE85550T1/de
Publication of EP0371394A2 publication Critical patent/EP0371394A2/de
Publication of EP0371394A3 publication Critical patent/EP0371394A3/de
Application granted granted Critical
Publication of EP0371394B1 publication Critical patent/EP0371394B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26D7/20—Cutting beds
    • 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 the cutting table of a high-pressure fluid jet cutting system according to the preamble of claim 1, wherein the material to be cut lying on the cutting table is cut by means of a fluid jet.
  • a fluid jet In these cutting systems, which have been known for a long time, one of the essential requirements is that the used fluid jet cut the material to be cut is rapidly discharged from the material support and that the inherent high energy can be dissipated within the cutting table in order to avoid further destruction.
  • DE-OS 28 13 498 discloses a cutting table in which the material support is formed from a frame-shaped box profile (honey-comb). Arranged below the box profile are deflection plates which extend into the trough of the cutting table and extend obliquely to the direction of the irradiation and are intended to absorb the energy inherent in the fluid jet. Furthermore, the cutting material support can be formed by a plurality of support plates which extend transversely to the trough and have a cutting-like edge upwards. Here, too, the cutting beam hits the sloping support plate, causing it to lose energy.
  • metal wool, steel shot or loosely packed gravel above the horizontal surface within the frame.
  • metal wool, steel shot or ream only have inadequate sound-absorbing properties, so that when the fluid jet strikes this material, the noise is not effectively suppressed, and also that the high-energy fluid jet presses the absorption material apart along the cutting line and throws it up. Due to the high inherent energy of the jet, this spreading and throwing occurs with such great force that either the sloping support plates are deformed strongly, which destroys the material to be cut or individual support plates rise, which leads to the formation of folds on the material to be cut and therefore no perfect cut formation is more possible.
  • EP-A2-319 143 discloses a fluid jet cutting system in which the fluid jet is caught in a mesh filled with granules after it has penetrated the material to be cut.
  • This flexible network is arranged below the contact surface and directly assigned to the cutting nozzle. With great design effort, it must be ensured that the network travels the same way below the contact surface as the cutting nozzle above it.
  • the invention has for its object to design a cutting table so that in addition to effective energy absorption and high noise insulation, it is ensured that the absorption material is not thrown up.
  • the task is solved with a cutting table of the generic type in that the granulate is enclosed in cages.
  • the The cutting surface formed in the frame of the table can be completely filled with granules without leaving any interfering spaces.
  • the development of the invention according to claim 3 also allows high demands for noise insulation to be met or, by using cages that can be made flatter, to replace the cages that may become necessary.
  • a perfectly flat support surface is created for the material support, particularly if it consists of individual segments.
  • the cutting support can be transported all round so that the cut-out patterns can be removed at the rear end of the cutting table, while at the same time new material to be cut can be introduced into the cutting area. This ensures the easy processing of material to be cut, which is wound up into a roll.
  • FIG. 1 shows a computer-controlled ultra-high pressure fluid jet cutting system in a partially simplified form, which essentially consists of: the cutting table 8, the cutting material support 3 arranged on the cutting table 8, the cutting portal 9, which is mounted longitudinally displaceably above the cutting table 8, and accommodates the high pressure nozzle 11 the control system 10.
  • the material 12 to be cut is placed on the 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 cutting table 8 has a rectangular, circumferential, laterally closed frame 13. Struts 17 are introduced within this frame 13, with which a collecting trough 4, which delimits the cutting table 8 downwards and in which the used cutting fluid is collected, is connected.
  • Commercially available gratings 15 rest on the collecting trough 4 on the inwardly projecting flanges 14 of the frame 13. 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 layer of honeycomb-shaped material (honey comb) serving as a cutting support 3 rests on these cages 16.
  • FIG. 3 shows a single cage 16.
  • the granules completely filling the cage are only indicated here.
  • One cover side 16f is connected to the side parts 16b to e after the box formed by the parts 16a to e has been filled with granules 1.
  • these filled cages which have the dimensions 20 ⁇ 20 ⁇ 4 cm (W ⁇ L ⁇ H), lie next to one another on the gratings 15 arranged in the cutting table 8 and completely cover them.
  • the material support 3 rests on this layer formed by the cages 16.
  • the jet is struck when it strikes the granules diffused.
  • the resulting pressure can easily escape through the meshes 2 of the cage 16 in any direction, a further beam diffusion taking place each time a granule is hit, which may well extend over several cage boundaries.
  • the mesh size 2 of the cage 16 is smaller than the granule diameter, pressure equalization can take place across the cage boundaries, but the range of motion of the granulate 1 is limited to the respective cage. As a result, there can be no or only slight pellets thrown along the cutting line of the fluid jet and the cutting material support 3, which is likewise composed of individual segments, cannot rise.
  • the individual cages 16 may neither be too large nor too small, since if the cage 16 is too large, a high pitch is inevitably formed along the cutting line, which in the end is the Cage wall could blow up, while if the cage 16 is too small, the pressure compensation is not possible quickly enough, or due to the limited available expansion space, the cage 16 is deformed by the granules, so that, finally, there is no more flat support surface for the material support 3.
  • a cage 16 which has the aforementioned dimensions and a polyamide granulate with a grain diameter of 4 mm gives very good results, but it goes without saying that other cage dimensions or another type of granulate can also be used.
  • the honeycomb-shaped cover plate referred to here as cutting material 3 only has the task of quickly draining the cutting fluid into the interior of the cutting table and effectively preventing the cutting material 12 from becoming damp during the cutting. If no moisture-absorbing material is processed, the honey-comb cover plate can be omitted and the material to be cut 12 can be placed directly on the granule-filled cages 16. In the event that more effective noise insulation is desired, several cages 16 can also be layered one on top of the other.
  • the individual cages 16 can be connected to one another in a simplified manner, as shown in FIG. 4, in such a way that an endless cutting material support 3a is formed which can be arranged inside the cutting table 8.
  • the cutting table 8 is not shown in FIG. 4 for clarity, and the cutting portal 9a arranged above the product support 3a and the high-pressure nozzle 11a are only indicated schematically.
  • Different from the cutting table 8 shown in FIG. 1 is only the endlessly rotating cutting material support 3a driven by the rollers 5, 6. Since revolving conveyor belts or the like have long been known, the person skilled in the art knows how to design the drive elements so that the functionality is ensured.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Formation And Processing Of Food Products (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Vending Machines For Individual Products (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)
EP89121631A 1988-11-28 1989-11-23 Schneidtisch Expired - Lifetime EP0371394B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89121631T ATE85550T1 (de) 1988-11-28 1989-11-23 Schneidtisch.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3840072A DE3840072C1 (enrdf_load_stackoverflow) 1988-11-28 1988-11-28
DE3840072 1988-11-28

Publications (3)

Publication Number Publication Date
EP0371394A2 EP0371394A2 (de) 1990-06-06
EP0371394A3 EP0371394A3 (en) 1990-08-22
EP0371394B1 true EP0371394B1 (de) 1993-02-10

Family

ID=6368014

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89121631A Expired - Lifetime EP0371394B1 (de) 1988-11-28 1989-11-23 Schneidtisch

Country Status (3)

Country Link
EP (1) EP0371394B1 (enrdf_load_stackoverflow)
AT (1) ATE85550T1 (enrdf_load_stackoverflow)
DE (2) DE3840072C1 (enrdf_load_stackoverflow)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3840072C1 (enrdf_load_stackoverflow) * 1988-11-28 1989-11-23 Duerkopp Systemtechnik Gmbh, 4800 Bielefeld, De
DK0480118T3 (da) * 1990-10-10 1994-11-07 Peter Hediger Indretning til opfangning af væskestrålen i en væskestråle-skæremaskine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4112797A (en) * 1977-10-07 1978-09-12 Gerber Garment Technology, Inc. Fluid jet cutting apparatus
DE3519616C1 (en) * 1985-05-31 1987-01-02 Duerkopp System Technik Gmbh Work table for cutting planar material by means of a fluid jet
US4651476A (en) * 1986-05-07 1987-03-24 Flow Systems, Inc. Compact receptacle with automatic feed for dissipating a high-velocity fluid jet
AU2399288A (en) * 1987-11-30 1989-06-01 Flow Systems Inc. Energy-dissipating receptacle for high velocity fluid jet
DE3840072C1 (enrdf_load_stackoverflow) * 1988-11-28 1989-11-23 Duerkopp Systemtechnik Gmbh, 4800 Bielefeld, De

Also Published As

Publication number Publication date
EP0371394A2 (de) 1990-06-06
DE58903528D1 (de) 1993-03-25
EP0371394A3 (en) 1990-08-22
DE3840072C1 (enrdf_load_stackoverflow) 1989-11-23
ATE85550T1 (de) 1993-02-15

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