EP0988941B1 - Dispositif pour couper des profilés creux allongés en matières thermoplastiques - Google Patents

Dispositif pour couper des profilés creux allongés en matières thermoplastiques Download PDF

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Publication number
EP0988941B1
EP0988941B1 EP99118583A EP99118583A EP0988941B1 EP 0988941 B1 EP0988941 B1 EP 0988941B1 EP 99118583 A EP99118583 A EP 99118583A EP 99118583 A EP99118583 A EP 99118583A EP 0988941 B1 EP0988941 B1 EP 0988941B1
Authority
EP
European Patent Office
Prior art keywords
knife
cutting
frame
cut
profiles
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
EP99118583A
Other languages
German (de)
English (en)
Other versions
EP0988941A3 (fr
EP0988941A2 (fr
Inventor
Ernst Dr. Krüger
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.)
Milacron Inc
Original Assignee
Milacron Inc
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 Milacron Inc filed Critical Milacron Inc
Publication of EP0988941A2 publication Critical patent/EP0988941A2/fr
Publication of EP0988941A3 publication Critical patent/EP0988941A3/fr
Application granted granted Critical
Publication of EP0988941B1 publication Critical patent/EP0988941B1/fr
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
    • 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
    • B26D1/04—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 linearly-movable cutting member
    • B26D1/06—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 linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—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 linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • 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

Definitions

  • Plastic profiles are used as continuous products in the Extrusion process manufactured. The products are then by suitable separation units to processable Cut lengths. Usually saws are used for this used. The use of such saws has the Disadvantage that in addition to a large amount of chips considerable noise level arises.
  • the knife is in a guided on the side.
  • the width or the game these guides are partially adjustable. in principle these knives slide freely in their movement.
  • the document DE 298 08 312 U discloses the features of Preamble of claim 1. Based on the status of the Technology is the object of the invention is a Knife cutting device to develop so that a Cutting of building profiles can be carried out without cutting, of the quality of such a cut Requirements are sufficient.
  • Such a device designed according to the invention allows a straight, right-angled cut even with a stringent requirements quality to perform when the cutting edge of the Knife or its clamping certain geometric Errors.
  • a knife 1 clamped in a clamping frame which is made of two side elements 2 and 4 and a head element 3 and a foot element 5 is constructed.
  • the clamping points 9, 10, on which the knife 1 is connected to the stenter is necessary to achieve the Knife tension close to the diagonal to the cutting direction S running knife edge 1a arranged.
  • Knives 1 Other possible stops or tension points for the Knives 1 are in FIG. 1 by reference numerals 11 to 15 characterized.
  • clamping devices In the area of the clamping points 9 to 15 can not here shown clamping devices are attached, wherein the fixation of the knife 1 in the clamping points 9 to 15 for example with a quick release device can be done.
  • the stenter has in this example Execution on the upper left side a pivot point 7, around which the left side element 4 is pivotable.
  • the frame can be clamped. Since doing that Knife 1 on the one hand, for example, at the clamping point 10 firmly with the pivotable about the pivot point 7 Side element 4 connected and on the other hand simultaneously for example at the fixed point 9 at the fixed point Side element 2 is held by the bracing of the pivotable side element 4, the knife 1 as well biased.
  • the tension reached in the knife 1 corresponds to at least 4% of the invention Tensile strength of the steel from which the knife 1 is made.
  • a groove 8 is exemplary in the right side spar 2 shown.
  • the groove 8 forms a lateral guide for the frame.
  • Ball bushing guides shown are used also function free of the knife clamping forces.
  • a profile 16 is guided through the stenter, which is cut to length by means of the knife 1.
  • the separating device according to the invention is suitable basically also for cutting pipes or similar extruded hollow chamber products. It is chipless Separation not only possible with PVC profiles, but also can in principle almost all plastics with this be separated. The quality of the separation quality then depends still depends primarily on the separation speed.
  • the knife 27 is in the two z-shaped Frames 17 and 18 at stops 24 and 25 excited, which is arranged near the knife edge 27a are and in which the knife 27 with the respective lower Arm of the z-shaped frame 17, 18 are connected.
  • the z-shaped Frames 17 and 18 are common Pivotal point 19 can be pivoted like a pair of scissors, that when the upper arms 17a, 18a approach each other Frame 17, 18 the lower arms 17b, 18b of frame 17, 18 separate from each other.
  • the frames are 17, 18 at the upper end of their upper arms 17b, 18b via a upper cross frame 23 connected to one another Separating force is applied to the upper arms 17b, 18b to move pivot point 19.
  • the connection is over the two free slot connections 20 and 21 manufactured.
  • the device shown in FIG. 2 is biased via a clamping device 22, not shown in detail.
  • This tensioning device 22 pulls for tensioning the Knife 27, the upper arms 17b, 18b of the frames 17 and 18 together around pivot point 19 so that the lower arms 17a, 18a of the frames 17, 18 are moved apart.
  • the knife 27 becomes transverse to the cutting direction 26 biased until subjected to tension which is at least 4% of the tensile stress of the steel, from which the knife 27 is made.
  • the knife drive takes place during a cutting process in Cutting direction 26.
  • the z-shaped frames 17 and 18 also serve to manage the overall system, the frame 17, 18 in guides, not shown are led.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Claims (4)

  1. Dispositif pour couper des profilés creux allongés (6) en matières thermoplastiques, en particulier des profilés pour fenêtres et cadres de porte, muni d'un couteau (1) pour couper le profilé (6) caractérisé en ce que le couteau (1) est précontraint dans un cadre stable et la précontrainte du couteau (1) correspond au moins à 4 % de la limite de contrainte de l'acier de coutellerie et en ce que le cadre passe sur le côté et est parallèle au couteau (1) lors du mouvement de coupe.
  2. Dispositif selon revendication 1, caractérisé en ce que le cadre est rectangulaire et fermé de tous les côtés, sert en même temps à la précontrainte du couteau (1) et passe sur le côté.
  3. Dispositif selon revendication 1 et 2 caractérisé en ce que le guidage du mouvement de coupe est exempt d'effort de serrage du couteau.
  4. Dispositif selon revendication 1, caractérisé en ce que le couteau (1) est serré dans une dispositif en forme de ciseaux de sorte que le cadre de serrage est ouvert vers le bas dans le sens de la coupe et que les bras des ciseaux passent sur le côté.
EP99118583A 1998-09-21 1999-09-21 Dispositif pour couper des profilés creux allongés en matières thermoplastiques Expired - Lifetime EP0988941B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19843262 1998-09-21
DE19843262A DE19843262A1 (de) 1998-09-21 1998-09-21 Meßspannrahmen

Publications (3)

Publication Number Publication Date
EP0988941A2 EP0988941A2 (fr) 2000-03-29
EP0988941A3 EP0988941A3 (fr) 2001-06-20
EP0988941B1 true EP0988941B1 (fr) 2003-12-10

Family

ID=7881721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118583A Expired - Lifetime EP0988941B1 (fr) 1998-09-21 1999-09-21 Dispositif pour couper des profilés creux allongés en matières thermoplastiques

Country Status (3)

Country Link
EP (1) EP0988941B1 (fr)
AT (1) ATE255984T1 (fr)
DE (2) DE19843262A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT5545U1 (de) * 2001-09-13 2002-08-26 Technoplast Kunststofftechnik Vorrichtung zum spanlosen trennen von kunststoffprofilen
TWM510836U (zh) * 2015-03-10 2015-10-21 Nien Made Entpr Co Ltd 窗簾裁切機

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3522748A (en) * 1967-09-27 1970-08-04 Charles Treffner Machine for slitting plastic film and the like
DE2554695A1 (de) * 1975-12-05 1977-06-08 Erhard Ing Grad Breu Schneidmaschine fuer gefrierfleisch
DE19756932A1 (de) * 1997-12-20 1999-06-24 Cpm Gmbh Trennmesser
DE29808312U1 (de) * 1998-05-11 1998-08-13 cpm GmbH, 49124 Georgsmarienhütte Trennmesser

Also Published As

Publication number Publication date
EP0988941A3 (fr) 2001-06-20
DE19843262A1 (de) 2000-03-30
EP0988941A2 (fr) 2000-03-29
ATE255984T1 (de) 2003-12-15
DE59908004D1 (de) 2004-01-22

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