EP0525607B1 - Schneidgerät - Google Patents

Schneidgerät Download PDF

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Publication number
EP0525607B1
EP0525607B1 EP92112500A EP92112500A EP0525607B1 EP 0525607 B1 EP0525607 B1 EP 0525607B1 EP 92112500 A EP92112500 A EP 92112500A EP 92112500 A EP92112500 A EP 92112500A EP 0525607 B1 EP0525607 B1 EP 0525607B1
Authority
EP
European Patent Office
Prior art keywords
web
cutting
guiding
cutting device
roller
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
EP92112500A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0525607A1 (de
Inventor
Lutz Seidel
Hans Seibold
Wolfgang Krauth
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.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer 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 Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP0525607A1 publication Critical patent/EP0525607A1/de
Application granted granted Critical
Publication of EP0525607B1 publication Critical patent/EP0525607B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D06H7/04—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials longitudinally
    • D06H7/08—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials longitudinally for cutting tubular fabric longitudinally

Definitions

  • the invention relates to a cutting device of the type specified in the preamble of claim 1.
  • a cutting device of the type specified in the preamble of claim 1.
  • Such a device can be found in document DE-A-2 015 239.
  • the continuous tubular goods are aligned with their dividing line on the cutting element in such a way that the cut is made as precisely as possible along the predetermined dividing line.
  • the tubular goods opening device in each case rotates the tubular goods relative to the stationary cutting device.
  • it is difficult to cut along the dividing line especially if the fabric flutters or strikes during the transition from the opening device to the cutting knife.
  • the invention has for its object to provide a cutting device of the type mentioned that enables an exact cut along the dividing line even at high speeds of goods.
  • the additional goods guiding device arranged directly in front of the cutting element ensures that the goods are correctly fed.
  • the dividing line scanner monitors the exact and finely graduated alignment of the dividing line on the cutting element. Unavoidable own movements of the goods when entering the cutting device are eliminated by this goods guiding device. A high running speed of the goods can be achieved with perfect cutting accuracy. It is no longer possible for the goods to run or flutter in front of the cutting element.
  • the embodiment according to claim 2 is advantageous because the goods guiding device and the separating line scanning device are effective immediately before the point at which the cutting element has to cut in the separating line.
  • the goods are supported for the cut, guided cleanly and monitored for the position of the dividing line.
  • the embodiment according to claim 3 is particularly recommended because the guide and holding elements on the one hand gently grip and guide the goods, but on the other hand provide a desirable stabilization of the web.
  • the rollers, rolls or belts can be relatively narrow, since it is sufficient to support and guide the goods at least in a width slightly exceeding the cutting width.
  • a particularly important and advantageous embodiment is set out in claim 5.
  • the cutting device is not dependent on the exact alignment of the dividing line before the cutting device, because the material flow in the cutting device is still is corrected so that the cutting element hits the dividing line relatively precisely. If the dividing line runs slightly to the side, the guiding and holding elements lead the dividing line to the cutting element. This enables extraordinarily high product speeds. Up to now, speeds of up to 60 m / min were possible as the upper limit for a clean cut, but with the cutting device according to the invention, speeds of up to 120 m / min and more can be easily achieved.
  • the cutting device can also be used for other goods, ie not just knitted tubular goods, which only experience an approximate alignment of their dividing line with the cutting element and are then finely aligned in the cutting device.
  • the embodiment according to claim 6 is also expedient because the separating line scanning device detects the position of the separating line immediately in front of the cutting element and controls the goods guiding device in such a way that the separating line hits the cutting element.
  • a sensitive response with strong useful signals results in the embodiment according to claim 7.
  • the receiver of the separating line scanning device is arranged directly behind the goods passing by because the goods are detected on the one hand with a very sharp edge and on the other hand also self-cleaning of the receiver and also of the transmitter in their areas particularly exposed to dirt, liquid, fluff or the like.
  • the embodiment according to claim 8 is particularly expedient, in which the servomotor actuates the guide and holding elements in order to feed the dividing line as precisely as possible to the cutting element.
  • a speed-controlled DC geared motor has shown itself to be sensitive and precise control, because these motors control even the smallest angles of rotation in a reproducible manner.
  • a stepper motor could also be used.
  • the pressure spring determines the holding force of the guiding and holding elements. By adjusting the spring force, an individual adjustment to the sensitivity of the goods can be achieved.
  • the embodiment according to claim 12 is also expedient, because superimposed inclined movements and sideways movements of the rollers are effective for correcting the movement of the goods. In this way, a strong correction can be generated over the relatively short running distance of the goods to the cutting element.
  • the adjustment range can be limited.
  • the embodiment according to claim 14 is of particular importance.
  • the cutting device with its goods guiding and separating line scanning device enables extraordinarily high running speeds in the tubular goods opening and rotating device, because the basket only for a rough alignment of the separating line is responsible, while the fine alignment of the dividing line to the cutting element takes place directly in the cutting device with the additional goods guiding device.
  • the dividing line scanning device in the cutting device can be used in a particularly expedient manner to control the rotary drive of the basket. However, this is not necessarily so, but a separate sensing device can also be provided to control the rotary drive of the basket.
  • a device V for opening and turning running goods Y is shown, which during processing, e.g. Mesh tubular goods is used to continuously open the possibly twisted tubular goods, to stretch them transversely and along a predetermined dividing line, e.g. a drop stitch or an applied marking line before the goods are further processed as a spread web.
  • the goods V are guided in the direction of travel W over a basket K, opened by this and then pulled through a cutter G and cut open. So that the cutting device G cuts exactly along the dividing line, the basket K is rotated in order to feed the dividing line to the cutting device G in an aligned manner.
  • the device consists of a support arm T and a column S which defines an axis A of the basket K.
  • the cutter G is on the front side of the basket K positioned in the direction of travel W close to the latter and guided in the support arm T in parallel.
  • An adjusting device B is used to change the casing diameter of the basket K (minimum casing diameter D 1, enlarged casing diameter D 2), and to adjust the cutting device G to adapt to the respective casing diameter.
  • the basket K consists of rods 1, each of which is pivotally supported with its rear end 2 in a holder 3, and a front holder 5 for each front end 4 of the rod.
  • the brackets 3, 5 are rotatable relative to the column S.
  • the column S has a stationary tube 7, on which a slewing ring 9 can be rotated via rotary bearings 8.
  • the first holder 3 also has a turntable 3 ', which is rotatably mounted on bearings 10 on a telescopic tube 11, which can be moved axially back and forth relative to the tube 7.
  • An outer tube 12 is connected to the slewing ring 3 '.
  • a motor is encapsulated in the telescopic tube 11 as a rotary drive 13 for rotating the rotating ring 3 '.
  • an approximately hemispherical body 14 is attached to the slewing ring 3 '.
  • a swivel-bending gear Z with a straight lever 15 and a straight spreading lever 19 is provided.
  • the lever 15 is articulated at an articulation point 16.
  • the other end of the lever 15 is pivotable in an abutment 18 in a turntable 17 attached to the outer tube 12.
  • the spreading lever 19 is pivotally supported in a pivot bearing 20 in the slewing ring 9 and articulated on the lever 15 at 21.
  • the rear bracket is axially adjustable with the adjustment device B, which e.g. has a handwheel 31a, a drive spindle 23 in the support arm T, a bevel gear 24 and an adjusting spindle 25 in the column S, the adjusting spindle 25 being coupled to the telescopic tube 11.
  • These spindles 23, 25 are each protected against dust and corrosion by bellows 32, 32a.
  • the drive spindle 23 drives a slider via an adjusting nut 27 26 on which the cutter G is attached.
  • This has a cutting element 28, for example a driven cutting disc, and a goods guide device E with rollers 29, between which the goods Y running from the basket K are gripped and guided to the cut.
  • a dividing line scanning device M is arranged in the cutting device G.
  • the front ends 4 of the rods 1 are bent rounded. These turns 30 form stops for the smallest sleeve diameter D 1.
  • the device works as follows: The product Y is guided over the basket K, the dividing line being at least roughly aligned with the cutting element 28 when the product Y runs between the rollers 29.
  • the basket K is rotated via the rotary drive 13 in such a way that the separating line meets the cutting element 28 at least roughly.
  • the holder 3 is moved upwards by means of the adjusting device B. This movement is followed by the turntable 17, so that the levers 15 and the rods 1 are pivoted outwards by the spreading levers 19.
  • the linear distance between the front and rear ends 2, 4 of the rods 1 is shortened, so that the convex bend B2, which has a parabolic shape, the rods 1 gradually increases towards the outside and thereby the movement the bracket 3 is compensated so that the front ends 4 of the rods move approximately perpendicular to the column axis A along a path F to the outside.
  • the distance to the cutting device G seen in the direction W of the goods remains unchanged.
  • the cutter G is also adjusted via the slider 26, so that it is aligned with the respective sleeve diameter D 1, D 2.
  • the cutting device G has a housing 50, in which the cutting element 28 is mounted with its drive and is secured by a cover R.
  • the goods guiding device E and the separating line scanning device M are arranged in the housing 50 in front of the cutting element.
  • the goods guide device E has guide and holding elements N, in the present exemplary embodiment a pair of rollers 29 which are relatively narrow and which have their roller axes parallel to the axis of rotation of the cutting element 28.
  • the rollers 29 have a non-slip surface or a surface with a rubber coating in order to be able to detect and regulate the goods without slippage.
  • a servomotor 41 is mounted in the housing 50, e.g. an electric motor which is reversible in the direction of rotation and which can pivot an articulation point 40 about an axis 40 ′ which is parallel to the actuating axis 33.
  • the pivot point is expediently arranged on a crank.
  • the actuating element 37 is coupled to the articulation point 40 by means of a coupling element P, preferably a longitudinally adjustable link 39, for common movement.
  • the coupling element P is articulated on the actuating element 37 in an articulation point 38 and on the articulation point 40.
  • the second roller 29, which is on the right in FIG. 3, is rotatably mounted on an arm 36 and is applied to the counter roller via a pressure spring 47.
  • the arm 37 is pivotally mounted about a hinge axis 43 parallel to the roller axis on a holder 44 which is pivotable about a second, stationary actuating axis 34 in the housing 50.
  • the actuating axes 33, 34 are aligned with one another and are held in bearing bushes fixed to the housing.
  • Arranged on the holder 44 in FIG. 2 is an adjusting element which is located behind the adjusting element 37 and is connected to the articulation point 40 via a length-adjustable link 46.
  • the articulation between the handlebar 46 and the actuator of second roller 29 is designated 45.
  • the dividing line scanning device M has a built-in, e.g. optoelectronic sensor with a receiver 47 '' and a transmitter 47 ', the sensing area (see FIG. 2) extends transversely to the direction of travel W and is at least as wide as the adjustment range of the rollers 29.
  • the receiver 47' ' built into the cutting table.
  • the pivoting range of the arms 35, 36 about the adjusting axes 33, 34 is expediently limited to approximately 15 ° on each side.
  • the goods Y are passed as close as possible to the receiver 47 ′′ in order to obtain a sharp scanning contour and also to self-clean the most important parts on the receiver 47 ′′.
  • the separating line scanning device M detects deviations in the position of the separating line from a desired position and generates control signals for the servomotor 41, which swivels the rollers 29 against the direction of travel in order to lead the separating line to the cutting element 28.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Control Of Cutting Processes (AREA)
EP92112500A 1991-07-31 1992-07-22 Schneidgerät Expired - Lifetime EP0525607B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4125277A DE4125277C2 (de) 1991-07-31 1991-07-31 Schneidgerät
DE4125277 1991-07-31

Publications (2)

Publication Number Publication Date
EP0525607A1 EP0525607A1 (de) 1993-02-03
EP0525607B1 true EP0525607B1 (de) 1995-05-10

Family

ID=6437356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92112500A Expired - Lifetime EP0525607B1 (de) 1991-07-31 1992-07-22 Schneidgerät

Country Status (4)

Country Link
EP (1) EP0525607B1 (pt)
BR (1) BR9202923A (pt)
DE (2) DE4125277C2 (pt)
ES (1) ES2072667T3 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010024364A1 (de) 2010-06-18 2011-12-22 Texmag Gmbh Vertriebsgesellschaft Vorrichtung zum Schneiden einer laufenden Warenbahn

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2326746A (en) * 1942-09-12 1943-08-17 Superba Mfg Co Inc Bias cutting machinery
US2382997A (en) * 1943-06-26 1945-08-21 Superba Mfg Co Inc Bias cutting machinery
DE2015239A1 (en) * 1970-03-31 1971-10-14 Erhardt & Leimer Kg, 8900 Augsburg Cutting tubular knit goods
DE2130721A1 (de) * 1971-06-21 1973-04-19 Groezinger Maschf Arbach Aufschneidemaschine fuer schlauchware
FR2567164B1 (fr) * 1984-07-04 1986-12-05 Domisse Machine de detorsion et d'ouverture des tricots.

Also Published As

Publication number Publication date
DE4125277C2 (de) 1995-06-22
ES2072667T3 (es) 1995-07-16
DE59202133D1 (de) 1995-06-14
EP0525607A1 (de) 1993-02-03
DE4125277A1 (de) 1993-02-04
BR9202923A (pt) 1993-03-30

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