EP2743045B1 - Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen. - Google Patents

Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen. Download PDF

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Publication number
EP2743045B1
EP2743045B1 EP20120197431 EP12197431A EP2743045B1 EP 2743045 B1 EP2743045 B1 EP 2743045B1 EP 20120197431 EP20120197431 EP 20120197431 EP 12197431 A EP12197431 A EP 12197431A EP 2743045 B1 EP2743045 B1 EP 2743045B1
Authority
EP
European Patent Office
Prior art keywords
manifold
fins
extraction
head
dust
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.)
Not-in-force
Application number
EP20120197431
Other languages
English (en)
French (fr)
Other versions
EP2743045A1 (de
Inventor
Martin Phillips
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.)
Atlas Converting Equipment Ltd
Original Assignee
Atlas Converting Equipment Ltd
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 Atlas Converting Equipment Ltd filed Critical Atlas Converting Equipment Ltd
Priority to EP20120197431 priority Critical patent/EP2743045B1/de
Publication of EP2743045A1 publication Critical patent/EP2743045A1/de
Application granted granted Critical
Publication of EP2743045B1 publication Critical patent/EP2743045B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B26D7/18—Means for removing cut-out material or waste
    • B26D7/1845—Means for removing cut-out material or waste by non mechanical means
    • B26D7/1863—Means for removing cut-out material or waste by non mechanical means by suction
    • 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
    • B26D1/24—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 coacting with another disc cutter
    • B26D1/245—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 coacting with another disc cutter for thin material, e.g. for sheets, strips or the like

Definitions

  • the invention relates to dust extraction systems and web slitters equipped therewith.
  • the traditional dust extraction systems as used on the Applicant's slitter/rewinding machines include dust extraction hoses attached at one end to the male knife and at the other end to a fixed dust extraction manifold.
  • a vacuum pump is provided to suck the dust away from the blade along the dust extraction hoses into the dust extraction manifold from where it is delivered to the dust collection vessel.
  • the male knife may be positioned anywhere along the male knife beam within the limits imposed by the length of the dust extraction hose.
  • Current dust extraction systems restrict the lateral movement of a knife blade during automatic knife positioning and manual knife positioning.
  • the extraction hose of the prior art is secured in close proximity to the blade of the male knife and to the extraction manifold by respective hose clamps. These hose clamps are usually of the Chenny or Jubilee type.
  • the extraction manifold is normally secured to the male knife beam.
  • the hose used to link the knife holder to the manifold restricts the movement of the knife thereby limiting the set-ups that can be achieved with standard hoses.
  • Extended hoses can be used to overcome this restriction but the cost and complexity of handling the additional hose length safely is prohibitive.
  • US-5,031, 494 discloses a device which defines the preamble of claim 1.
  • the invention is defined in claim 1. This configuration is particularly advantageous because it avoids the traditional requirement of one hole in the manifold for a particular hose end. Instead of discrete positioning of the end of an extractor conduit, unlimited male knife positioning may be achieved in the elongate channel. The requirements for potentially fiddly and complex clips are avoided. The male knives may be added or removed quickly and simply without the need for extensive technical assistance or spare parts other than the extra male knife.
  • the seal is formed from two oppositely positioned sealing strips; whereby, in use, the relatively low pressure in the extraction manifold combines with the relatively high ambient air pressure to push said portions against said head.
  • This configuration is particularly advantageous since it allows the strips to be relatively straightforwardly parted for the removal of the head whilst at the same time allowing a tight fit on the extraction head.
  • the knife blade allows the knife blade to be positioned in any appropriate position of the elongate channel. Consequently, downtime if any, for the replacement of a knife blade is kept to the minimum with little or no requirement for modification of the manifold.
  • the sealing strip portions are bowed. This increases the surface area of contact between the inner portion of the sealing strips and the head of the extraction system.
  • the head incorporates an upper aperture and laterally extending fins. This configuration is particularly advantageous in terms of allowing the parting of the sealing strips for the insertion or the removal of the head.
  • the fins are tapered. This further improves the ability of the fins to be used in parting the sealing strips.
  • the fins are tapered in varying width from an upper portion of the fins to a lower portion of the fins. This further improves the ability of the fins being used to part the sealing strips.
  • the fins decrease in thickness in the lateral direction. This provides a relatively pointed lateral extremity for the fins further facilitating the parting of the sealing strips.
  • the fins are rounded. This configuration is particularly advantageous in terms of removing the sharp edges which may otherwise damage the air tightness of the extraction manifold.
  • the extractor conduit incorporates a rigid telescopic portion.
  • This configuration is particularly advantageous as it limits the degree of motion other than in the telescopic direction.
  • the internal surfaces of the rigid telescopic portion are relatively smooth which reduces the level of turbulence and consequently noise during the suction process.
  • both the extraction manifold and the fan are mounted onto the male knife blade beam. This further improves the suction properties of the dust extraction system.
  • FIG. 1 shows a knife blade assembly 1 equipped with a dust extraction system generally referenced 2.
  • the dust extraction system incorporates an extractor conduit which at its proximal extremity 3 is in an area adjacent the slitting operation and which at its distal extremity incorporates a head 4 which engages with extraction manifold 5.
  • the extractor conduit 2 incorporates a telescoping extraction tube 6 and a manifold seal deflector 7.
  • the telescoping extraction tube 6 extends laterally whilst the manifold seal deflector 7 extends upwardly.
  • the telescoping extraction tube 6 and the deflector 7 are joined together by a tube section 8 provided at an angle.
  • the deflector is secured onto the mounting plate 9 by the mounting plate 10.
  • Releasable attachment means such as fasteners 11 and 12 immobilise the deflector relative to the plate 9.
  • the telescoping extraction tube 6 incorporates a number of concentric tubular portions which slide relative to one another in order to achieve a lengthening or a shortening of the tube.
  • the central portion 13 of the telescoping extraction tube provides a relatively smooth internal surface.
  • the manifold seal deflector 7 provides a substantially oblong internal cavity through which a mixture of air and dust travel upwards.
  • the upper extremity of the deflector incorporates a head 4 which has at least one but preferably two laterally extending fins 14 and 15. These fins are wedge shaped and reduce in thickness towards their distal extremities 16 and 17.
  • Alternative head configurations are presented in Figure 8 where distal extremities 18 and 19 are rounded, distal extremities 20 and 21 progressively increase in width and, extremities 22 and 23 where a reduction in width is provided from an upper portion to a lower portion.
  • the head of the manifold seal deflector has tapered ends machined perpendicular to maximise the sealing efficiency when traversing the manifold seals 24 and 25.
  • the seal is formed of two sealing strips 24 and 25 which are upwardly bowed and abut each other at their distal extremities.
  • the sealing strips will be of inherently flexible material in order to accommodate the insertion of the fins of the head.
  • the sealing strips fit tightly in an elongate channel generally referenced 26.
  • the dust extraction manifold 5 may be mounted onto the male knife beam 27 through releasable attachment means 28 and 29.
  • the extraction manifold may be substantially U-shaped.
  • An aperture 30 may be provided between the extraction manifold and the male knife beam 27. Extractor fans may be provided on at least one side of the male knife beam as shown for example in Figure 5 where pumps 31 and 32 can draw air from the internal cavity of the male knife beam 27.
  • the tapered ends of the head part the seal gradually, preventing loss of air from the dust extraction manifold. Sealing is increased by flowing air (low pressure) in the dust extraction manifold exerting an upward "pull" on the seals forcing them against the head of the extraction system whilst the ambient air (high pressure) push the seal onto the head.
  • the length of the taper offers least resistance and best sealing efficiency.
  • the dust extraction manifold 5 may be formed of two parts 33 and 34. These parts may be light alloy extrusions. Each light alloy extrusion may have the facility to accommodate sealing strips as shown in the previous figures. The ends of the dust extraction manifold may be closed by a closure plate or other appropriate closure means. As shown in Figure 3 , the dust extraction manifold 5 is mounted directly onto the male knife beam 27. The holes machined through the dust extraction manifold align with the holes machined through the male knife beam.
  • a control mechanism may be provided so that when the slitting operation starts, the extractor fans start.
  • the air being expelled from the plenum chamber is replaced in equal volume by air being sucked into the telescoping extraction tube.
  • the volume of air being sucked into the telescoping extraction tube takes with it the dust created by the slitting action of the knives.
  • the air passes through the telescoping extraction tube into the manifold seal deflector and into the dust extraction manifold.
  • the smooth internal surfaces of the telescoping extraction tube produce a fast, laminar air flow that maximises dust extraction.
  • the extractor fans draw the air out of the dust extraction manifold into the plenum chamber. From the plenum chamber, the air/dust mixture is expelled from the extractor fans into a dust collection vessel (not shown).
  • the dust extraction is illustrated by arrows 35 and 36.
  • a number of deflectors may be positioned along a part of a dust extraction manifold.
  • FIG. 4 , 6 and 7 A further embodiment of the invention is illustrated in Figures 4 , 6 and 7 .
  • Identical numerical references to the first embodiment are employed throughout for simplicity other than for parts which differ from the corresponding parts in the first embodiment.
  • the telescoping extraction tube of the first embodiment has been replaced by a flexible hose 37 which connects the male knife blade guard 38 to the manifold seal deflector 7.
  • dust extraction manifold 5 is mounted directly onto the male knife beam 39. Venturi holes 40 machined through the dust extraction manifold 5 align with holes machined through the male knife beam 39. The Venturi holes improve dust extraction by accelerating the airflow into the plenum chamber.
  • the extractor fans start.
  • the air being expelled from the plenum chamber is replaced in equal volume by air being sucked into the flexible hose.
  • the volume of air being sucked into the flexible hose takes with it the dust created by the slitting action of the knives.
  • Air passes through the flexible hose, into the manifold seal deflector, and into the dust extraction manifold.
  • the extractor fans draw the air out of the dust extraction manifold into the plenum chamber. From the plenum chamber, the air/dust mixture is expelled from the extractor fans into the dust collection vessel.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)

Claims (10)

  1. Bahnschneidevorrichtung, umfassend ein Staubabsaugsystem (2); das Staubabsaugsystem enthaltend ein oder mehrere Schneidklingen; das System umfassend eine Absaugleitung (2), welche sich an ihrem äußersten proximalen Ende (3) in einem Bereich angrenzend an die Schneidoperation befindet und welche an ihrem äußersten distalen Ende einen Kopf (4) enthält, der in einen Absaugverteiler eingreift; ein Absauggebläse zum Bewirken des Flusses des abgesaugten Staubs von dem extremen proximalen Ende (3) zu dem extremen distalen Ende; und einen langen Kanal (26) mit Einrichtungen zum Abdichten des Kopfes (4) gegenüber dem Absaugverteiler (5); wodurch der Kopf (4) an einer beliebigen Stelle entlang dem Kanal (26) positioniert werden kann; dadurch gekennzeichnet, dass der Verteiler (5) auf einem positiven Messerbalken (27) befestigt ist; wobei der Verteiler (5) Venturi-Löcher (40) enthält, die an Löchern ausgerichtet sind, welche durch den positiven Messerbalken (27) bereitgestellt werden.
  2. System gemäß Anspruch 1, wobei die Dichtung aus zwei gegenüberliegend positionierten Dichtungsstreifenabschnitten (24, 25) gebildet wird, wodurch - bei der Verwendung - der relativ geringe Druck in dem Absaugverteiler (5) mit dem relativ hohen Umgebungsluftdruck kombiniert wird, um die Abschnitte (24, 25) gegen den Kopf (4) zu drücken.
  3. System gemäß Anspruch 2, wobei die Dichtungsstreifenabschnitte (24, 25) bogenförmig sind.
  4. System gemäß einem der vorherigen Ansprüche, wobei der Kopf (4) eine obere Öffnung (30) und seitlich verlaufende Rippen (14, 15) enthält.
  5. System gemäß Anspruch 4, wobei die Rippen (14, 15) konisch sind.
  6. System gemäß Anspruch 4, wobei die Rippen (14, 15) konisch sind und eine von einem oberen Abschnitt der Rippen zu einem unteren Abschnitt der Rippen variierende Breite aufweisen.
  7. System gemäß Anspruch 5 oder Anspruch 6, wobei die Rippen (14, 15) eine in seitlicher Richtung abnehmende Dicke aufweisen.
  8. System gemäß einem der Ansprüche 4 bis 7, wobei die Rippen (14, 15) abgerundet sind.
  9. System gemäß einem der vorherigen Ansprüche, wobei die Absaugleitung (2) einen steifen teleskopischen Abschnitt enthält.
  10. System gemäß einem der vorherigen Ansprüche, wobei sowohl der Absaugverteiler (5) als auch das Gebläse auf dem positiven Messerbalken (27) befestigt sind.
EP20120197431 2012-12-17 2012-12-17 Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen. Not-in-force EP2743045B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120197431 EP2743045B1 (de) 2012-12-17 2012-12-17 Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120197431 EP2743045B1 (de) 2012-12-17 2012-12-17 Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen.

Publications (2)

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EP2743045A1 EP2743045A1 (de) 2014-06-18
EP2743045B1 true EP2743045B1 (de) 2015-01-28

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EP20120197431 Not-in-force EP2743045B1 (de) 2012-12-17 2012-12-17 Staubextraktionssystem und Bahnschneidvorrichtungen damit versehen.

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108068152B (zh) * 2017-12-05 2019-11-05 安徽依采妮纤维材料科技有限公司 一种用于汽车内饰加工的切割机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5031494A (en) * 1990-01-10 1991-07-16 Kampf Gmbh & Co. Maschinenfabrik Web processing machine having at least one web and roll and a slitter for said web

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