EP1254748A1 - Dispositif et procédé de coupe pour profilés en matière plastique - Google Patents

Dispositif et procédé de coupe pour profilés en matière plastique Download PDF

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Publication number
EP1254748A1
EP1254748A1 EP01110649A EP01110649A EP1254748A1 EP 1254748 A1 EP1254748 A1 EP 1254748A1 EP 01110649 A EP01110649 A EP 01110649A EP 01110649 A EP01110649 A EP 01110649A EP 1254748 A1 EP1254748 A1 EP 1254748A1
Authority
EP
European Patent Office
Prior art keywords
cutting
cutting knife
cut
knife
plastic profile
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Withdrawn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
EP01110649A
Other languages
German (de)
English (en)
Inventor
Martin Federschmid
Rainer Hildinger
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.)
Bernhard Ide Werkzeug- und Maschinenbau fur Die Kunststoffverarbeitung & Cokg GmbH
Original Assignee
Bernhard Ide Werkzeug- und Maschinenbau fur Die Kunststoffverarbeitung & Cokg 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 Bernhard Ide Werkzeug- und Maschinenbau fur Die Kunststoffverarbeitung & Cokg GmbH filed Critical Bernhard Ide Werkzeug- und Maschinenbau fur Die Kunststoffverarbeitung & Cokg GmbH
Priority to EP01110649A priority Critical patent/EP1254748A1/fr
Publication of EP1254748A1 publication Critical patent/EP1254748A1/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Withdrawn legal-status Critical Current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
    • B26D3/00—Cutting work characterised by the nature of the cut made; Apparatus therefor
    • B26D3/16—Cutting rods or tubes transversely
    • 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
    • B26D7/14—Means for treating work or cutting member to facilitate cutting by tensioning the work
    • 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
    • B26F3/002—Precutting and tensioning or breaking

Definitions

  • the invention relates to a cutting device with the features according to the preamble of claim 1 and a method for separating plastic profiles.
  • Plastic profiles for the production of links for example a roller shutter, cladding or frame elements or Like. Are essentially in the way of extruding as Endless semi-finished product and then by separating cuts either to transport dimensions or directly to finished dimensions cut for the further manufacturing process.
  • a saw is widely used to make the separating cut, for example in the form of a miter saw with a rotating circular saw blade provided.
  • the one for machining in the area of the cut energy is converted into heat implemented.
  • the generally low thermal conductivity of the Plastic material requires one in the area of the cut high local heating, which leads to melting of the cut surface and can also lead to sticking of the saw blade.
  • the quality of the cutting surface and also the cutting performance can be limited.
  • the invention has for its object a cutting device and a method for separating plastic profiles to provide with an improved cut quality.
  • the task is accomplished by a cutting device with the features of claim 1 and by a method with the features of claim 14 solved.
  • the clamping device Plastic profile with a pretensioner Mistake.
  • the cutting element for separating the plastic profile is at least approximately cutting without cutting Cutting knife designed to make a cut in the area the tension is executed.
  • the tension leads to one Gaping the cut so that the cutting edge of the Cutting knife can penetrate the base of the cut without the cutting surfaces on the side clamp the cutting knife.
  • essentially only the cutting edge comes into contact with the plastic profile, which means only low cutting forces are necessary and the amount of frictional heat is low is.
  • the cut surfaces are very clean and need mostly no post-processing. Because of the low amount of heat a high cutting speed can be selected. The non-cutting process avoids an unwanted one subsequent cleaning process of the separated plastic profile.
  • the pretensioning device is formed as a bending device, the section in the tension zone of the bend of the plastic profile becomes.
  • the tension is there expediently only slightly less than the tensile strength of the Plastic material set so that for execution of the cut essentially only scratching the cut base is required and the separation energy essentially is applied by the tension.
  • This is a fast cutting progress in connection with a high Service life of the cutting knife achievable.
  • the cutting quality is expediently the tensile stress reproduced in the plastic profile with progressive cut. The one that diminishes in the course of the cutting progress This compensates for tensile stress, resulting in precisely set Cutting conditions and thus a constant one Cutting quality can be achieved across the entire depth of cut.
  • the bending device comprises a cutting table, one in the area of the cutting knife arranged and adjustable against the cutting table hold-down and one arranged to the side of the cutting knife Cutting base.
  • the tension pad is useful formed as a clamping wedge, whereby an at least approximately flat contact of the plastic profile with avoidance of undesirable impressions can be achieved.
  • the plastic profile facing side of the clamping wedge advantageously has a convex curve.
  • the plastic profile along the curve perform a rolling motion, which means that during the whole Tracking process an at least approximately flat Place the plastic profile on the convex curve of the clamping wedge is given.
  • Another way of adjusting the bending stress consists of a tracking of the clamping wedge parallel to Surface of the cutting table in the direction of the cutting knife.
  • the plastic profile can be held down with the hold-down device firm and immobile close to the cut to be made be clamped, whereby a high cutting precision can be achieved is.
  • the cutting progress by delivering the Cutting knife and especially in combination with a Controlled tracking of the clamping pad.
  • the cutting progress Pushing down the hold-down device against a stationary one Cutting knife done.
  • a coolable version of the Useful cutting knife is a coolable version of the Useful cutting knife. This is a sticking of the Cutting knife in the area of the cutting edge by melting of the plastic material avoidable. With less heat sensitive Plastic materials can be used for support the cutting performance a heatable version of the cutting knife be appropriate.
  • the cutting element 3 is as at least approximately non-cutting cutting knife 6 formed which in the embodiment shown a an axis of rotation 16 is a rotatable circular knife 19.
  • the cutting knife 6 can also be used as a linearly movable cutting element 3 with a straight cutting edge or as a circumferential one Cutting tape may be formed.
  • the clamping device 2 comprises a pretensioner 4 for applying tensile stress on the plastic profile 1 in the area to be executed Section 5.
  • the pretensioning device 4 for example, from two on the side of the cutting knife 6 arranged clamping elements exist between which the Plastic profile 1 is stretched.
  • the biasing device 4 as a bending device 7 trained and includes two symmetrical on both sides Cutting knife 6 arranged, fixed on a cutting table 8 Clamping pads 10 and two near the cutting knife 6 arranged hold-down 9.
  • the clamping pads 10 can for example roles or the like. and are shown in Embodiment designed as clamping wedges 11, the Plastic profile 1 facing side 12 each convex Rounding 13 has. That straight in the unloaded state trained plastic profile 1 is shown in dashed lines and lies on the two clamping wedges 11.
  • Fig. 2 shows details in a schematic representation on the plastic profile 1 in the area of the cut 5.
  • the plastic profile 1 is shown curved and has a concave Page 24 and a convex side facing the circular knife 9 21 on.
  • In the area of the concave side 24 there is a through the arrows 25 indicated compressive stress and accordingly on the opposite convex side 21 one through the Arrows 26 shown tension.
  • In section 5 arises a local increase in tension by the arrows 28 is shown.
  • the tensile stress is slight in this area less than the tensile strength of the material from Plastic profile 1 set.
  • the tension leads to one Gaping the cut 5, as a result of which a cutting edge 30 of the circular knife 19 in the intersection 29 of the cut 5 abuts while the two sides of the circular knife 19 with a symmetrical cut 14 on both sides exposed.
  • Fig. 3 shows details in a schematic representation the arrangement of FIG. 1 in the area of the clamping wedge 11.
  • Das Plastic profile 1 is in the embodiment shown as U-profile with a web 32 and arranged laterally of the web 32 Flanges 31 formed.
  • the bridge 32 and the two Flanges 31 enclose the wedge 11 such that the Tensioning wedge 11 with its facing the plastic profile 1 Page 12 bears against web 32.
  • This is the plastic profile 1 guided on all sides.
  • Other cross-sectional shapes can also be used of the clamping wedge 11 may be appropriate, for example with a trough-shaped cross section to accommodate rounded and / or hollow chamber profiles.
  • FIG. 4 shows a schematic cross-sectional illustration a cutting knife 6 with a one-sided cut 14, in which the cutting edges 30 in a side plane 39 of the cutting knife 6 lies.
  • FIG. 5 A variant of the cutting knife 6 is shown in Fig. 5, at which is a bilateral cut 14 in a symmetrical design is provided. The cutting edge 30 is thereby in the central plane 40 of the cutting knife 6.
  • the Cut 14 has a number of waves 33 for generating a Serrated 15. It can also be a bilateral Cut 14 with pairs or mutually opposite Shafts 33 may be provided.
  • FIG. 7 shows a variant of the cutting device 17 Fig. 1, in which the plastic profile 1 by a one-sided next to the circular knife 19 arranged hold-down firmly against the cutting table 8 is pressed.
  • the cutting progress of the Cut 5 is made by setting the circular knife 19 in the direction controlled by arrow 35.
  • the delivery speed variable in the direction of arrow 35 depending on the material thickness to be cut.
  • With a U-profile, for example 3 is a higher feed rate for the flanges 31 than for the cut through the web 32 intended. You can also adjust the speed of rotation the circular knife 19 in the direction of arrow 23 is useful his.
  • On the side opposite the hold-down 9 of the circular knife 19 arranged wedge 11 is parallel to Surface 18 of the cutting table 8 slidably arranged.
  • Fig. 8 shows a cross-sectional view through the arrangement 1 with further details, accordingly the hood 22nd pivotable from an open, shown in dashed lines Position in a closed with solid lines Position is stored.
  • the hold-down 9 are against the hood 22 is supported and in the embodiment shown designed as a pressure spindle 41. Hydraulic cylinders, Knee lever or the like can be provided.
  • the circular knife 19 extends through the cutting table 8 and is in the direction of arrow 23 rotatable.
  • the rotary movement can be optional be set uniformly or oscillating. additionally is one for cutting wide or flat profiles linear horizontal mobility of the circular knife 19 in the direction of the double arrow 36 is provided.
  • the circular knife 19 is can be cooled depending on the material to be cut or heatable.
EP01110649A 2001-05-02 2001-05-02 Dispositif et procédé de coupe pour profilés en matière plastique Withdrawn EP1254748A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP01110649A EP1254748A1 (fr) 2001-05-02 2001-05-02 Dispositif et procédé de coupe pour profilés en matière plastique

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP01110649A EP1254748A1 (fr) 2001-05-02 2001-05-02 Dispositif et procédé de coupe pour profilés en matière plastique

Publications (1)

Publication Number Publication Date
EP1254748A1 true EP1254748A1 (fr) 2002-11-06

Family

ID=8177296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01110649A Withdrawn EP1254748A1 (fr) 2001-05-02 2001-05-02 Dispositif et procédé de coupe pour profilés en matière plastique

Country Status (1)

Country Link
EP (1) EP1254748A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582320A1 (fr) * 2004-03-31 2005-10-05 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines pour faire la coupe transversale des pièces longues de papier
EP1787745A1 (fr) * 2005-11-18 2007-05-23 HDS Hydraulik GmbH & Co. KG Dispositif de coupe pour tuyau flexible
CN101804645A (zh) * 2010-04-22 2010-08-18 郭永广 一种软料产品的切割机构
CN105881614A (zh) * 2014-12-19 2016-08-24 宁波市鄞州派合机械有限公司 一种新型切管机
CN107225610A (zh) * 2016-03-24 2017-10-03 全亨科技有限公司 电路板材剖切的自动对位方法

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222970A (en) * 1963-04-12 1965-12-14 Morgan Construction Co Link mounted saw assembly
US3863538A (en) * 1973-05-02 1975-02-04 Wyle Laboratories Rotary cut-off knife and method
DE2408319A1 (de) * 1974-02-21 1975-09-04 Prignitz Hapri Leichtbau Verfahren und einrichtung zum spanlosen schneiden von hartschaumstoffkoerpern
DE2425492A1 (de) * 1974-05-27 1975-12-11 Hoerster Fa E & F Vorrichtung zum trennen von schlaeuchen, insbesondere grossdimensionierten schlaeuchen mit stahldrahtbewehrung
US3978747A (en) * 1975-03-24 1976-09-07 The Gates Rubber Company Method and apparatus for severing reinforced elastomeric tubular articles
FR2335323A1 (fr) * 1975-12-16 1977-07-15 Basf Ag Dispositif pour la mise de longueur, sans enlevement de copeaux, de bandes de matiere alveolaire
US4553460A (en) * 1982-10-20 1985-11-19 Werner Stahl Work-holding fixture for metal power saws
DE8907173U1 (fr) * 1989-06-12 1989-10-05 Parker Fluid Verbindungsteile Gmbh, 6315 Muecke, De
US5253558A (en) * 1991-12-12 1993-10-19 Marken Manufacturing, Inc. Hose cutting apparatus and system, and method for using same

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3222970A (en) * 1963-04-12 1965-12-14 Morgan Construction Co Link mounted saw assembly
US3863538A (en) * 1973-05-02 1975-02-04 Wyle Laboratories Rotary cut-off knife and method
DE2408319A1 (de) * 1974-02-21 1975-09-04 Prignitz Hapri Leichtbau Verfahren und einrichtung zum spanlosen schneiden von hartschaumstoffkoerpern
DE2425492A1 (de) * 1974-05-27 1975-12-11 Hoerster Fa E & F Vorrichtung zum trennen von schlaeuchen, insbesondere grossdimensionierten schlaeuchen mit stahldrahtbewehrung
US3978747A (en) * 1975-03-24 1976-09-07 The Gates Rubber Company Method and apparatus for severing reinforced elastomeric tubular articles
FR2335323A1 (fr) * 1975-12-16 1977-07-15 Basf Ag Dispositif pour la mise de longueur, sans enlevement de copeaux, de bandes de matiere alveolaire
US4553460A (en) * 1982-10-20 1985-11-19 Werner Stahl Work-holding fixture for metal power saws
DE8907173U1 (fr) * 1989-06-12 1989-10-05 Parker Fluid Verbindungsteile Gmbh, 6315 Muecke, De
US5253558A (en) * 1991-12-12 1993-10-19 Marken Manufacturing, Inc. Hose cutting apparatus and system, and method for using same

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1582320A1 (fr) * 2004-03-31 2005-10-05 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines pour faire la coupe transversale des pièces longues de papier
EP1970175A1 (fr) * 2004-03-31 2008-09-17 M T C - Macchine Trasformazione Carta S.r.l. Dispositif de serrage pour machines de découpe transversale de blocs de papier
US8261646B2 (en) 2004-03-31 2012-09-11 Mtc-Macchine Trasformazione Carta S.R.L. Clamping device for transversal cutting machines of logs of paper
EP1787745A1 (fr) * 2005-11-18 2007-05-23 HDS Hydraulik GmbH & Co. KG Dispositif de coupe pour tuyau flexible
CN101804645A (zh) * 2010-04-22 2010-08-18 郭永广 一种软料产品的切割机构
CN101804645B (zh) * 2010-04-22 2012-06-27 郭永广 一种软料产品的切割机构
CN105881614A (zh) * 2014-12-19 2016-08-24 宁波市鄞州派合机械有限公司 一种新型切管机
CN107225610A (zh) * 2016-03-24 2017-10-03 全亨科技有限公司 电路板材剖切的自动对位方法
CN107225610B (zh) * 2016-03-24 2019-07-12 全亨科技有限公司 电路板材剖切的自动对位方法

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