EP0651087B1 - Maschine zum selbsttätigen fadengeraden Trennen von Stoffen, insbesondere von Stoffbahnen - Google Patents

Maschine zum selbsttätigen fadengeraden Trennen von Stoffen, insbesondere von Stoffbahnen Download PDF

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Publication number
EP0651087B1
EP0651087B1 EP19940440063 EP94440063A EP0651087B1 EP 0651087 B1 EP0651087 B1 EP 0651087B1 EP 19940440063 EP19940440063 EP 19940440063 EP 94440063 A EP94440063 A EP 94440063A EP 0651087 B1 EP0651087 B1 EP 0651087B1
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EP
European Patent Office
Prior art keywords
cutting
axis
blade
machine according
cutting axis
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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
EP19940440063
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English (en)
French (fr)
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EP0651087A1 (de
Inventor
Serge Burdino
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S BURDINO Ets
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S BURDINO Ets
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Publication of EP0651087A1 publication Critical patent/EP0651087A1/de
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/20—Tearing
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/14—Cutting fabrics by cutting the weft or warp threads while making special provision to avoid cutting warp or weft threads, respectively, adjacent to the cut

Definitions

  • the present invention relates to a machine for cutting woven materials, in particular strips of fabric, in the transverse or longitudinal direction, and more particularly to cut automatically in line with the thread, that is to say to cut the chain son without cutting the weft threads, or vice versa.
  • Document GB-A-830,436 describes a device for cutting materials such as textiles comprising an axis perpendicular to the fabric cutting axis on which are mounted a plurality of cutting members regularly spaced and acting simultaneously, intended for cut the weft threads at specific locations in the fabric, between two warp threads whose gap is more important.
  • Each cutting member has a blade freely rotating knife and shaped element of boss intended to stretch the fabric just before cutting.
  • the object of the present invention is to remedy the disadvantages of known devices by proposing a machine which allows cuts to be made automatically in the straight line, even in the case of tight weavings.
  • the blade is secured to the axis of pivoting of the frame by means of a horizontal arm likely to be temporarily maintained by organs retractable retainers, in a position allowing the blade is in the same vertical plane as the cutting axis theoretical.
  • the cutting edge of the blade has two sides of the same inclination and is not very sharp, and the blade tilt is adjustable.
  • the cutting blade comprises, in rear of the two inclined sides, two shoulders intended for spread the wires parallel to the cutting axis.
  • the cutting blade is carried by a mobile carriage in horizontal translation on the frame, parallel to the cutting axis, and the strip of fabric is movable downstream of said cutting axis, perpendicular to the latter, the strip of fabric being maintained for this purpose tensioned by clamps upstream and downstream of the cutting axis and on either side of it, the clamps located in downstream being movable in a moving horizontal plane in the same direction, perpendicular to said axis, this displacement being controlled by the detection cells.
  • the strip of fabric is fixed upstream of the cutting axis, and the carriage is also moving in a moving horizontal plane perpendicular to said axis, this movement being controlled to the detection cells, which are in this case susceptible to a similar displacement.
  • These two embodiments are specially adapted for cutting a strip of fabric transversely, that is to say to cut the warp threads between two weft threads.
  • the pivot axis of the blade is fixedly fixed to the frame, and the fabric strip is movable moving parallel to the cutting axis.
  • the band of fabric is in this case unwound downstream of the cutting axis and wound upstream, the unwinding roller used for this effect being movable in a moving horizontal plane perpendicular to the cutting axis, this displacement being slaved to the detection cells.
  • the take-up rollers and unwinder used are fixed and the pivot axis of the blade is movable in displacement in a horizontal plane perpendicular to the cutting axis, this displacement being slaved to the detection cells, which are in this cases susceptible to similar displacement.
  • Cutting a strip of fabric in line with the thread by means of a machine according to the invention takes place from the as follows: the strip of fabric is stretched well flat, held either by the clamps or by the rollers unwinder and rewinder, and is positioned a few millimeters above the lower end of the blade cutting, which is temporarily kept in the same vertical plane as the theoretical cutting axis in order to initiate the chopped off.
  • the wires to be cut mount on the blade and are severed under the combined effect of tension and push, then the blade is released, allowing its pivoting, and moves between the two wires not to cut, too large a spacing of said blade by relation to the theoretical axis, meaning that the two wires do not are not parallel to the cutting axis, being detected instantly by the cells, which control the refocusing of the two threads by moving either the fabric in downstream of the cutting axis, perpendicular to it, or of the pivot axis of the blade in the same direction, according to the embodiment chosen.
  • a machine according to the invention comprises a frame 1 on which passes a strip of fabric 2 intended to be cut transversely to the right of the wire along a cutting axis theoretical 20.
  • the frame 1 comprises a carriage 3 movable in horizontal translation on a slide 30 parallel to the cutting axis 20, and secured to a chain, or belt 31, stretched between two pulleys 32 and 33, one of which 32 is driven in rotation by a geared motor 34, not shown in figure 2.
  • An arm 4 is pivotally secured, by one of its ends, around a vertical axis 40, at carriage 3, and is crossed at its other end by a second axis 41, parallel to axis 40, at the end of which an idler roller 42 is attached which is inserted with a slight clearance between two guides 43 and 44 positioned on either side on the other side of the vertical plane containing the cutting axis 20, mounted pivoting in a horizontal plane by their end in upstream of the cutting axis on vertical axes, 45 and 46 respectively, the pivoting in spacing of one relative to the other being controlled by two cylinders 47 and 8 secured to the frame 1 and at their other end.
  • the arm 4 comprises, projecting downwards from its underside 49, a cutting blade 5, positioned in a vertical plane passing through axes 40 and 41, and the edge of which of cut 50 is directed upwards and makes an acute angle with the underside 49 of the arm 4.
  • the inclination of the blade 5 is adjustable in depending on the nature of the fabric to be cut, allowing the fabric to mount on the cutting edge 50 of said blade, which facilitates the cutting of the wires perpendicular to the axis cutting 20 which come into contact with said edge 50.
  • the frame 1 also comprises, downstream of the axis section 20, positioned on either side thereof, in look of a mask 14 fixed on the axis 41 of the arm 4, two detection cells 10 and 11.
  • the frame 1 also has two pairs 12 and 13 of pliers, respectively 120, 121 and 130, 131, the pair 12 being placed on the edge side 21 of the fabric strip 2 where cut must be started, pliers 120 and 121 positioned close to each other on both sides of the cutting axis 20, and the pair 13 being placed on the other side on edge 22, clamps 130 and 131 also being positioned on either side of the cutting axis 20.
  • Cutting to the right of the wire along the cutting axis 20 of the fabric strip 2 is produced as follows: the strip of fabric 2 is kept stretched by the pairs of clamps 12 and 13, the carriage 3 moves in the slide 30, driven by the belt 31, the arm 4, maintained not pivoting between guides 43 and 44 via the roller 42, allowing the positioning and the maintenance of the blade 5 in the extension of the cutting axis 20 so to initiate the cut between two weft threads.
  • arm 4 When the cut is started, arm 4 is released by spacing relative to each other of the guides 43 and 44 under the action of cylinders 46 and 47, while the clamps 120 and 121 move apart to tension the fabric strip 2 on either side of the cutting axis 20, the blade 5, which has become movable in pivoting around the axis 40 via of arm 4, moves between the two weft threads and cuts the chain son, a possible deviation of the blade 5, indicating that the two weft threads are not on the axis section 20, being detected by cells 10 and 11 which in this case control the movement in one direction or in the other of the pair of pliers 13 in order to center the two weft threads in the cutting axis 20.
  • the cutting blade 5 has two shoulders 51 and 52 located behind the inclined planes 53 and 54 which define the cutting edge 50 and the cutting edge 55 allowing, during the advancement of said blade 5 by through the arm 4, to separate the wires 56 and 57 parallel to the theoretical cutting axis 20, in order to cut the wires 57 'perpendicular to the cutting axis 20 by the cutting edge 55 without it cutting the two wires 56 and 57 bearing respectively on the shoulders 51 and 52.
  • blade 5 is double-edged and has two additional shoulders 58 and 59 symmetrically arranged.
  • the cutting blade 5 is actuated by a motor 60 according to a reciprocating movement similar to that of a jigsaw.
  • the blade 5 is positioned in a sheath 61 provided, short distance from its end, from a blank 62 revealing said blade 5.
  • the sheath 61 has two shoulders 63, 64, visible on the sectional view along line I-I of the figure, which frame the blade 5 and allow to separate the yarns of fabric 65 between which the cut is made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (13)

  1. Maschine zum automatischen Senkrechtschneiden von Textilien, insbesondere von Stoffstreifen in Längs- und Querrichtung, bestehend aus einem Rahmengestell (1) an dem ein um eine die theoretische Schneidachse (20) schneidende senkrechte Schwenkachse (40) drehbares, geradliniges und schräg zur Waagrechten verlaufendes und die Waagrechte mit dem darauf befindlichen und zu schneidenden Stoffstreifen (2) schneidendes Schneidmesser (5) angebaut ist, dessen Schneidkante (50) nach oben gerichtet ist, wobei das Schneidmesser (5) und der Stoffstreifen (2) eine Relativbewegung zueinander und parallel zur theoretischen Schneidachse (20)ausführen, dadurch gekennzeichnet, daß einerseits das Schneidmesser (5) über einen waagrechten Arm (4) fest mit der Schwenkachse (40) verbunden ist, durch dessen eines Ende die Schwenkachse (40) verläuft und der zeitweilig mit ausfahrbaren Haltevorrichtungen (43, 44) in einer Stellung festgehalten werden kann, in der sich das Schneidmesser (5) in derselben senkrechten Ebene befindet wie die theoretische Schneidachse (20) und daß sie andererseits Mittel (10, 11, 14) zum Erkennen des Abstands zwischen dem Schneidmesser (5) und der Schneidachse (20) sowie Mittel (13) zum Verlagern des Stoffstreifens (2) hinter die Schneidachse in Bezug auf die Schwenkachse (40) des Schneidmessers (5) senkrecht zur besagten Schneidachse (20) besitzt, wobei diese Verlagerung von den Mitteln (10, 11, 14) zum Erkennen des Abstandes des Schneidmessers (5) nachgesteuert wird.
  2. Maschine nach Patentanspruch 1, dadurch gekennzeichnet, daß die Mittel (10, 11, 14) zur Abstandserkennung aus zwei hinter der Schneidachse (20) links und rechts von dieser angebrachten und zum Schwenkarm (4) hin ausgerichteten optoelektronischen Zellen (10, 11) bestehen, wobei der Schwenkarm (4) an seinem einen Ende eine zu den Zellen (10, 11) gerichtete Maske (14) besitzt.
  3. Maschine nach Patentanspruch 1, dadurch gekennzeichnet, daß eine zweite Achse (41) parallel zur Achse (40), an deren Ende eine lose Rolle (42) fest angebracht ist, durch den waagrechten Arm (4) verläuft, wobei die Rolle (42) mit leichtem Spiel zwischen den ausfahrbaren Haltevorrichtungen (43, 44) eingeführt werden kann, die zwei auf einer waagrechten Ebene schwenkbare Führungen links und rechts von der die Schneidachse (20) bildenden senkrechten Ebene darstellen.
  4. Maschine nach Patentanspruch 1, dadurch gekennzeichnet, daß die Schwenkachse (40) fest mit einem waagrecht parallel zur Schneidachse (20) verfahrbaren Schlitten (3) verbunden ist, wobei der Stoffstreifen (2) vor sowie links und rechts der Schneidachse von zwei beweglichen, voneinander abstehenden Klammern (120, 121) und hinter der Schneidachse von zwei beweglichen, voneinander und von den beiden anderen Klammern (120, 121) abstehenden Klammern (130, 131) festgehalten wird.
  5. Maschine nach Patentanspruch 4, dadurch gekennzeichnet, daß die Klammern (130, 131) hinter der Schneidachse (20) auf einer waagrechten Ebene und in derselben Richtung senkrecht zur Schneidachse (20) beweglich sinq sowie von den Zellen (10, 11) nachgesteuert werden.
  6. Maschine nach Patentanspruch 4, dadurch gekennzeichnet, daß der Schlitten ebenfalls auf einer waagrechten Ebene und senkrecht zur Schneidachse (20) beweglich ist sowie von den Zellen (10, 11) nachgesteuert wird.
  7. Maschine nach Patentanspruch 4, dadurch gekennzeichnet, daß die Schwenkachse (40) des Schneidmessers (5) fest mit dem Rahmengestell (1) verbunden ist, wobei der Stoffstreifen (2) zwischen zwei Rollen - einer Rolle zum Abwickeln und einer Rolle zum Aufwickeln - gespannt ist.
  8. Maschine nach Patentanspruch 7, dadurch gekennzeichnet, daß die Rolle zum Abwickeln auf einer waagrechten Ebene und senkrecht zur Schneidachse (20) beweglich ist und von den Zellen (10, 11) nachgesteuert wird.
  9. Maschine nach Patentanspruch 7, dadurch gekennzeichnet, daß die Schwenkachse (40) des Schneidmessers (5) auf einer waagrechten Ebene und senkrecht zur Schneidachse (20) beweglich ist und von den Zellen (10, 11) nachgesteuert wird.
  10. Maschine nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß die Schneidkante (50) des Schneidmessers (5) eine geringe Schärfe sowie zwei in demselben Winkel angebrachte Schrägen (53, 54) aufweist.
  11. Maschine nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß die Schräge des Schneidmessers (5) verstellbar ist.
  12. Maschine nach Patentanspruch 10 und 11, dadurch gekennzeichnet, daß das Schneidmesser (5) hinter den die Schneidkante (50) bildenden Schrägen (53, 54) zwei Schultern (51, 52) besitzt.
  13. Maschine nach einem der vorhergehenden Patentansprüche, dadurch gekennzeichnet, daß das Schneidmesser (5) mit einem Motor (60) verbunden ist, mit dem es wie eine Stichsäge in eine Hin- und Herbewegung versetzt wird.
EP19940440063 1993-10-01 1994-10-03 Maschine zum selbsttätigen fadengeraden Trennen von Stoffen, insbesondere von Stoffbahnen Expired - Lifetime EP0651087B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9311882 1993-10-01
FR9311882A FR2710577B1 (fr) 1993-10-01 1993-10-01 Machine destinée à couper des matières tissées, notamment des bandes de tissu.

Publications (2)

Publication Number Publication Date
EP0651087A1 EP0651087A1 (de) 1995-05-03
EP0651087B1 true EP0651087B1 (de) 1998-02-25

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EP19940440063 Expired - Lifetime EP0651087B1 (de) 1993-10-01 1994-10-03 Maschine zum selbsttätigen fadengeraden Trennen von Stoffen, insbesondere von Stoffbahnen

Country Status (4)

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EP (1) EP0651087B1 (de)
DE (1) DE69408623T2 (de)
ES (1) ES2115908T3 (de)
FR (1) FR2710577B1 (de)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103526530B (zh) * 2013-10-08 2016-02-17 江苏康乃馨织造有限公司 撕布机
CN112323445B (zh) * 2020-10-20 2022-07-29 广西德福莱医疗器械有限公司 口罩切片机切片方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB191509358A (en) * 1915-06-25 1915-09-16 William John Mellersh-Jackson Means for Tearing Materials.
GB830436A (en) * 1957-06-28 1960-03-16 William Henry Dutfield Methods and apparatus for cutting sheet material
FR1374528A (fr) * 1963-08-30 1964-10-09 Comptoir De L Ind Cotonniere Machine à couper en trame les serviettes éponge tissées en bandes continues
US4589361A (en) * 1984-09-28 1986-05-20 Cannon Mills Company Apparatus and method for automatically guiding, trimming, splitting and side hemming continuous textile material
US4833957A (en) * 1987-06-10 1989-05-30 Haworth, Inc. Vision guided panel fabric cutter

Also Published As

Publication number Publication date
EP0651087A1 (de) 1995-05-03
FR2710577A1 (fr) 1995-04-07
ES2115908T3 (es) 1998-07-01
FR2710577B1 (fr) 1995-12-22
DE69408623D1 (de) 1998-04-02
DE69408623T2 (de) 1998-09-17

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