EP2246160A1 - Device and method for cutting sheet-like or strip-like tissue or non-woven fabric material which allows air to penetrate - Google Patents

Device and method for cutting sheet-like or strip-like tissue or non-woven fabric material which allows air to penetrate Download PDF

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Publication number
EP2246160A1
EP2246160A1 EP10004414A EP10004414A EP2246160A1 EP 2246160 A1 EP2246160 A1 EP 2246160A1 EP 10004414 A EP10004414 A EP 10004414A EP 10004414 A EP10004414 A EP 10004414A EP 2246160 A1 EP2246160 A1 EP 2246160A1
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EP
European Patent Office
Prior art keywords
hold
axis
glass
cutting
carbon fiber
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.)
Granted
Application number
EP10004414A
Other languages
German (de)
French (fr)
Other versions
EP2246160B1 (en
Inventor
Dietrich Wolf
Eggert Kahlke
Karsten Pingel
Heiko Schlüter
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.)
Maschinenbau U Konstruktion Elmshorn GmbH
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Maschinenbau U Konstruktion Elmshorn GmbH
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Publication of EP2246160A1 publication Critical patent/EP2246160A1/en
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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
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/20—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between the cutting member and work feed
    • 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
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/42—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting with interrelated action between work feed and clamp
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/015—Means for holding or positioning work for sheet material or piles of sheets
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/018—Holding the work 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
    • 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

Definitions

  • the invention relates to a device for cutting glass or carbon fiber textile webs in preferably elongate blanks, with a material support, at least one cutter head carrying a cutting blade, which in a generally constant distance from the material support in the direction of an X-axis and a Y-axis of an orthogonal Coordinate system controlled by a resting on the material support glass or carbon fiber fabric web is movable, and at least one downholder that holds the glass or carbon fiber fabric web adjacent to the cutting blade against the material support fitting.
  • the invention further relates to a method for cutting glass or carbon fiber textile webs into preferably elongate blanks, in which the glass or carbon fiber textile web is cut to rest on a material support, wherein at least one knife head equipped with a cutting blade moves in a generally constant distance from the material support in the direction controlled by an X-axis and a Y-axis of an orthogonal coordinate system via the glass or carbon fiber textile web, which is pressed by at least one hold-down against the material support.
  • the cutter head carries a hold-down in the form of a conical pressure roller on both sides of the cutting blade.
  • the pressure rollers are each rotatable about an axis inclined relative to the material support in order to approach the hold-downs as far as possible to the cutting blade.
  • the material is often placed on a flat, subjected to a negative pressure material layer before cutting in several layers on top of each other and the top layer of material with a for Covered air-impermeable film to press the material layers by the applied negative pressure against the material support and hold while the material layers and the film are cut together with the aid of a cutting knife, as for example in the DE 196 046 16 A1 is disclosed.
  • the material to be cut is an air-permeable glass or carbon fiber textile web, which is to be used in tailored form, for example in wind turbine for the production of rotor blades made of glass fiber reinforced plastic or aircraft for the production of transverse or side rudders made of carbon fiber reinforced plastic
  • at least a portion of the blanks often has a very large length.
  • the material support must have a very large length, which results in a large space requirement of the device.
  • the large length of the blanks makes it necessary to apply the individual layers of the material and the cover film by hand on the material support to prevent wrinkling, and after cutting the blanks also individually by hand from the underlying blanks or Remove the material support, resulting in a very high manual labor.
  • the invention has the object to improve a device of the type mentioned in that the space required reduced and / or the degree of automation in cutting the material can be increased.
  • immediate proximity means a distance of less than 60 mm, better still less than 50 mm, and preferably between 50 and 25 mm.
  • the glass or carbon fiber textile web can be pressed from the hold-down to a larger area against the material support. This makes it possible to machine the glass or carbon fiber web simultaneously with a plurality of cutting knives, the hold-down preventing wrinkling in the glass or carbon fiber web even when the cutter heads loaded with the cutting knives move toward each other.
  • the or each hold-down can serve not only to hold the glass or carbon fiber textile web in the immediate vicinity of a single cutting blade against the material support fitting, but can fulfill this purpose simultaneously for several cutting blades.
  • the invention is based on the idea not to superimpose several layers of the material to be cut on top of each other and then to cut them, but in each case only a single layer of the glass or carbon fiber textile web.
  • the device according to a preferred embodiment of the invention is provided with a plurality of cutter heads which are preferably individually, i. can be controlled separately from one another and whose cutting blades engage with the material along one or more hold-downs, so that it can be cut simultaneously with the cutting blades of all the cutter heads.
  • the direction designated in the context of the present patent application as the direction of the Y-axis, in which the cutter head is movable relative to the hold-down device, preferably runs transversely across the glass or carbon fiber textile web to be cut.
  • the cutter head advantageously moves together in relation to the glass or carbon fiber textile web lying on the material support in the longitudinal direction thereof, wherein the cutting blade expediently moves in front of or behind the hold-down device at a predetermined distance.
  • the cutter head is advantageously controlled to be rotatable about a Z-axis perpendicular to the X-axis and Y-axis.
  • the cutting blade is expediently an ultrasonic cutting blade.
  • the hold-down advantageously comprises at least one pressure element rolling against the textile material against the web, such as for example, a roll or guided over rollers and / or sliding surfaces belt.
  • the rolling of the pressure element can be caused either by the relative movement between the hold-down and the textile web, or by means of a drive which drives the pressure element at a speed corresponding to the speed of the relative movement speed.
  • the hold-down has an elongated shape and extends in the direction of the Y-axis over the material support.
  • a single hold down could be used, provided in its longitudinal direction with a narrow slot or gap in which the material to be cut is exposed so as to be cut by the cutting blade (s) movable along the slot or gap can, however, pressed on both sides of the slot or gap of the hold-down against the material support.
  • two separate elongate hold-downs which are preferably arranged in front of and behind the cutting blade and aligned parallel to each other and to the Y-axis, also defining therebetween a slot or gap in which the cutting blade is movable in the Y-axis direction is. It is important that the material to be cut is pressed on two opposite sides of each cutting blade over a larger pressure surface against the material support, the size of the actual pressure surface will depend on the type and shape of the hold-down.
  • this preferably comprises a stationary cutting station through which the glass or carbon fiber textile web moves in the direction of the X-axis and is simultaneously cut with a plurality of cutting blades.
  • the hold-downs of the cutting station are then preferably stationary, wherein they are spaced along the X-axis and delimit between them narrow, along the Y-axis extending column through which the cutting blades of the cutter heads in the direction of the Y-axis are movable.
  • the material support advantageously comprises a transport element provided with a support surface for the glass or carbon fiber textile web, which is moved through the stationary cutting station together with the glass or carbon fiber textile web.
  • the pressure elements of the holddown are expediently driven at the same speed as the transport element here.
  • the transport element can be suitably formed by a driven conveying member of an endless conveyor.
  • a curved material support may be provided with a transport element in the form of a rotatable roller, on its peripheral surface the glass or carbon fiber textile web rests, whereby it moves through the stationary cutting station with rotation of the roller.
  • a mobile cutting station which can be moved in the direction of the X axis via the glass or carbon fiber textile web deposited on a stationary support table or a conveying member of an endless conveyor.
  • the cutter heads are preferably movable along the support table in the direction of the X-axis together with the hold-downs and controlled separately from the hold-downs in the direction of the Y-axis.
  • the removal of the cut blanks from the top of the material support is also preferably fully or partially automated by winding the cut blanks individually on reeling sleeves in a reeling station.
  • the take-up station is preferably stationary and located at a front end of an additional transport element, eg another endless conveyor, in the direction of movement of the glass or carbon fiber web between the transport element of the material support and the winding station is arranged or adjoins the transport element of the material support, so that the winding of the blanks can be carried out independently of the processing speed in the cutting station.
  • a mobile winding station can be used, which can be moved to take the blanks on the blanks lying on the material support.
  • the Aufwickelstation for attaching the Aufwickelhülsen comprises at least two mandrels whose axes of rotation have a distance from each other.
  • the take-up sleeves are expediently rotated by their mandrels being driven by a motor.
  • either the resting on the material support glass or carbon fiber fabric can be moved through at least a portion of the material support through a fixed cutting station where it is pressed by the at least one hold-down against the material support and cut with the cutting blade of the at least one cutter head
  • a mobile cutting station comprising the at least one cutter head and the at least one hold-down can be moved over the glass or carbon fiber textile web resting on the material support, which is pressed against the material support by the at least one hold-down device and cut with the cutting knife.
  • both a stationary and a mobile cutting station is provided in which the glass or carbon fiber textile web is partially cut in each case.
  • long cuts, generally in the X-direction are preferably produced in the stationary cutting station and shorter cuts, generally running in the Y-direction, are preferably made in the mobile cutting station
  • the illustrated apparatus 10 is used to simultaneously cut a web 12 of glass fiber fabric or fiberglass fabric into a plurality of narrow elongated blanks 14 which are subsequently used in the manufacture of glass fiber reinforced plastic rotor blades, such as are required for wind turbines.
  • the in the FIGS. 1 to 4 illustrated apparatus 10 includes a material support 16, on which the web to be cut 12 rests during cutting, and a first and a second cutting station 18, 20.
  • the two cutting stations 18, 20 comprise a plurality of cutter heads 22, with respect to the on the material support 16 resting track 12 controlled in the direction of an X-axis and in the direction of a Y-axis of an orthogonal coordinate system are movable and each carry an ultrasonic cutting blade 24 which can be brought into engagement with the web 12 to this by relative movements between to cut the cutter heads 22 and the web 12 into the individual blanks 14.
  • Each of the two cutting stations 18, 20 also includes at least two hold-down 26, which can be pressed against the resting on the material support 16 web 12 from above to hold them in the immediate vicinity of the cutting blade 24 surface against the material support 16 fitting and wrinkling in the web 12 to avoid.
  • the material support 16 consists essentially of an elongated stationary support table 28 and an endless conveyor 30 with a longitudinally driven around the support table 28 driven endless Conveyor belt 32, the upper conveying strand 34 moves in the direction of movement of the web 12 over the top of the support table 28 and the lower empty strand 36 is guided below the support table 28 back.
  • the endless conveyor 30 has two pulleys 38, 40 for the conveyor belt 32, which can be driven by means of two rotary actuators (not shown) with controllable speed optionally with a desired rotational speed to the conveyor belt 32 with the resting from its top web 12 in the direction of Move X-axis back and forth.
  • Each of the cutter heads 22 has a controllable drive with which the associated cutting blade 24 can be rotated about a Z axis perpendicular to the upper side of the material support 16 and moved in the direction of the Z axis so that the cutting blade 24 is always in the cutting direction Align and on the other hand for cutting in the direction of the material support 16 can be vertical to bring it with the web 12 into engagement.
  • the cutting knives 24 are ultrasonic cutting knives which are vibrated to cut in order to facilitate cutting. Ultrasonic cutting blades are known and should therefore not be explained in detail here.
  • each of the elongated hold-down device 26 extends in the direction of the Y-axis over the entire width of the web 12. Between two adjacent hold-downs 26 are each two cutter heads 22 arranged by a common crossbar 42 (FIGS. Fig. 4 ) which extends in the middle between adjacent hold-downs 26 in the direction of the Y axis over the material support 16.
  • the cutter heads 22 attached to each crosshead 42 are individually and independently along the traverse 42 and can be individually by means of their controllable drive with respect to the crosshead 42 rotate about the Z axis to actively track their cutting blade 24 of the respective cutting direction.
  • the number of cutter heads 22 that can be moved on a traverse 42 may be one, as in the cutting station 20, two, as in the cutting station 18, or possibly more than two.
  • the hold-down devices 26 each include a plurality of parallel belts 44 extending at a slight lateral distance from each other across a series of rotatable rollers 46, 48 whose axes of rotation are parallel to each other and to the Y-axis.
  • the rollers 46, 48 are arranged so that the hold-downs 26 in cross section have the outline of a triangle with a rounded tip whose base is aligned parallel to the material support 16 and in the direction of the X-axis has a width of more than 200 mm.
  • one of the rollers 48 has a larger diameter and can be driven by means of a rotary drive (not shown) with variable speed and reversible direction of rotation.
  • the rotary drives of the driven rollers 48 of the hold-down 26 and the rotary drives of the guide rollers 38, 40 of the endless conveyor 30 are connected to a common control, by which they are controlled so that the movement speed and direction of movement of the belt 44, the speed of movement and the direction of movement of the conveyor belt 32nd corresponds to avoid any relative movement between the down against the top of the web 12 downers 26 and abutting against the underside of the web 12 conveyor belt 32.
  • the parallel hold-downs 26 are arranged at a small distance from one another in the direction of the X-axis, so that only narrow slots or gaps 50 with a width of approximately 100 mm are present between the adjacent hold-downs 26, in which the web 12 to be cut is exposed , As the cutter heads 22 move along the traverses 42, their cutting blades 24 each move along one of these gaps 50, so that the distance of the cutter blades 24 from the two adjacent downers 26 along the entire travel of the cutting blades 24 is advantageously less than 30 mm and maximum about 60 mm.
  • the first cutting station 18 is a stationary cutting station 18 in which both the hold-downs 26 and the trusses 42 serving as support for the cutter heads 24 are immovable with respect to the material support table 28 and with respect to one another.
  • long cuts are preferably made through the glass fiber fabric or fiberglass fabric which are parallel or at an acute angle to the X axis to separate the adjacent elongated blanks 14 along their longitudinal side edges 51 from the remainder of the web 12.
  • the cutting station 18 has a total of eight cutter heads 22, so that at the same time four elongated blanks 14 can be cut out of the web 12, the longitudinal side edges 51 are arranged at a distance from each other.
  • the pulleys 38, 40 of the endless conveyor 30 and the drive rollers 48 of the hold-down 26 driven to the web 12 by a synchronous movement of the conveyor belt 32 and the belt 44 with respect to the cutting blades 24 to move.
  • the cutter heads 24 are simultaneously moved between the two adjacent hold-downs 26 in the direction of this inclination along the Y-axis, so that they move overall over the web 12 at the angle of inclination.
  • the cutting blade 24 of each cutter head 22 is rotated about the Z-axis by the controllable drive of the cutter head 22 to align it in the cutting direction.
  • the second cutting station 20 is a mobile cutting station which is movable over the material support table 28 in the direction of the X-axis by means of a drive (not shown) connected to the control and driven by the latter.
  • the second cutting station 20 preferably serves to produce shorter, straight and / or curved cuts extending generally through the web 12 in the Y direction, separating the elongate blanks 14 at their face ends 52 from the remainder of the web 12.
  • a smaller number of cutter heads 22 are sufficient, such as one to make these cuts in a similar period of time as the long cuts in the first cutting station 18.
  • the stationary cutting station 18 is arranged in the direction of movement of the web 12 behind the mobile cutting station 20, but the arrangement may also be reversed.
  • the controller calculates the required movement of the mobile cutting station 20 in the X-axis direction in response to the instantaneous movement of the web 12 in that direction and then controls the movement of the cutter head 24 or the cutter heads 22 of the mobile cutting station 20 in the Y direction according to the superposition of the movements of the cutting station 20 and the web 12 in the direction of the X-axis.
  • the cutter head 24 of the mobile cutting station 20 is moved in the Y-axis direction, while the entire cutting station 20 including traverse 42 (not shown) and hold-downs 26 are moved in the X-axis direction, with the moving speeds corresponding to the desired cutting direction are matched and the cutting blade 24 is aligned by rotating the cutter head 22 about the Z axis in the cutting direction.
  • the support table 28 may be acted upon by a negative pressure which is applied through openings in the top of the support table 28 and the air-permeable conveyor belt 32 at the resting on the top of the conveyor belt 32.
  • FIG. 12 shows a portion of a modified apparatus 10 in which the material support 16 is formed by a rotatably driven roller 54, against the peripheral surface 56 of which the web 12 to be cut rests over a small circumferential angle of less than 20 degrees to spread on webs 12 of glass fiber fabric to prevent the cut tissue.
  • the knife head 22 of a stationary cutting station 18 exemplified in this figure is movable in the direction of the Y-axis parallel to the axis of rotation of the roller 54 through an elongated narrow gap 50 between two adjacent hold-downs 26.
  • the hold-down 26 consist here of several rollers 58, of which both sides of the cutting blade 24 only one is shown.
  • the rollers 58 have a smaller diameter compared to the diameter of the roller 54 and axes of rotation parallel to the axis of rotation of the roller 54 and serve to move the web 12 in the direction of the X-axis on either side of the cutting blade 24 and the gap 50 against the cylindrical peripheral surface of the roller 54 to press.
  • Fig. 6 1 shows an installation 60 which comprises an unwinding station 64 equipped with two supply rolls 62 of the web-like glass fiber fabric 12, a stationary cutting station 18 for cutting the unwound fabric 12 into individual blanks 14 and a winding station 66 for winding the blanks 14 in the direction of movement of the fabric web 12 or the blanks 14 (arrow A) along the X-axis are arranged one behind the other.
  • the unwinding 64 includes two above the material support 16 arranged one behind the other, supported on a stationary support frame 74 bearing blocks 68, on each of which one of the supply rollers 62 is rotatably mounted.
  • Each bearing block 68 further carries a arranged below the supply roll 62 rotatable guide roller 70, which ensures that the fabric web 12 already rests a small distance behind the unwinding station 64 on a conveyor belt of an endless conveyor 82 of the unwinding station 64, whose formation is substantially that of the endless conveyor 30th equivalent.
  • Fig. 6 and 7 In contrast to Fig. 1 and 2 is the in Fig. 6 and 7 shown stationary cutting station 18 arranged in the direction of movement of the fabric web 12 in front of the mobile cutting station 20, the cross member 42 together with the cutter head 22 and the two downholders 26 in the direction of the double arrow B. in Fig. 7 relative to a stationary support frame 72 of the two cutting stations 18, 20 is movable.
  • system 60 close to the endless conveyor 30 of the material support 16 successively further endless conveyor 76, 78, 80, whose training also corresponds substantially to the formation of the endless conveyor 30.
  • the endless conveyors 76, 78, 80 like the endless conveyors 30 and 82, are mounted on supporting frames so that the upper sides of the conveying runs of all the endless conveyors 30, 76, 78, 80, 82 lie in a horizontal plane.
  • the respective adjacent deflection rollers 38, 40 of successive endless conveyors 82, 30; 30, 76; 76, 78; 78, 80 are located at a small distance, as in Fig. 8 exemplified.
  • the endless conveyors 76, 80, 82 serve to transport the blanks 14 emerging from the cutting stations 18, 20 to the stationary winding station 66, which is arranged at the front end of the last endless conveyor 80 which is remote from the cutting stations 18, 20.
  • the speed of movement of the blanks 14 in the winding station 66 can be decoupled from the speed of movement of the web 12 and the blanks 14 in the cutting stations 18, 20.
  • the winding station 66 essentially consists of an upright housing 84 arranged behind the deflection roller 38 of the endless conveyor 80 next to the endless conveyor 80, a rotary drive arranged inside the housing 84 (not visible), and two winding mandrels 86, 88 drivable by means of the rotary drive. projecting freely over the adjacent to the endless conveyor 80 side of the housing 84.
  • the cylindrical mandrels 86, 88 are spaced apart in the vertical direction, with one 86 of the two winding mandrels 86, 88 disposed slightly above and the other 88 slightly below the endless conveyor 80.
  • the two winding mandrels 86, 88 have horizontal axes of rotation, which are aligned parallel to the axis of rotation of the adjacent deflection roller 38 of the endless conveyor 80.
  • Each of the two winding mandrels 86, 88 can be equipped with a plurality of hollow-cylindrical winding sleeves 90 (only two shown) which are pushed onto the latter from the free ends of the winding mandrels 86, 88 and connected in a rotationally fixed manner to the winding mandrels 86, 88, for example via a positive tongue and groove connection.
  • the take-up sleeves 90 serving for winding laterally adjacent blanks 14 are alternately supported on the upper and lower mandrels 86, respectively 88, so that the two blanks 14 can be unwound on the associated take-up sleeve 90 despite an overlap of the front end face of one blank 14 with the rear end face of the other blank 14.
  • the length of the take-up sleeves 90 may each be slightly larger than the maximum width of the blank 14 to be wound onto the take-up sleeve 90.
  • the take-up sleeves 90 are provided at their outer periphery with flat clamping devices 92, by means of which a front end of an adjacent, lying on the endless conveyor 80 blank 14 can be releasably secured to one of the winding sleeves 90. After winding the blank 14th For example, the take-up sleeve 90, together with the wound blank, can be withdrawn from the winding mandrel 86, 88 and stored in an intermediate store until further use of the blank 14.
  • the two winding mandrels 86, 88 and the winding mandrels 90, 88 mounted on the mandrels 86, 88 are driven by the rotary drive of the winding station in each case with the same direction of rotation and speed.
  • the rotational speed is adjusted by a common control of the rotary drive and the endless conveyor 80 in response to the increasing winding diameter of the blanks 14 wound on the winding sleeves 86, 88 such that the peripheral speed of the outermost layer of the roll corresponds to the speed of movement of the endless conveyor 80.
  • a drip tray 94 serves to accommodate any, incurred between the blanks 14 cutting waste 96, the either due to the movement of the endless conveyor 80 falls directly into the drip tray 94, is directed by the operator into the drip tray 94 or can be thrown in the drip tray 94 in the case of smaller pieces.

Abstract

The apparatus has a cutter head (22) carrying an ultrasound-cutting knife (24). The cutter head is movable at a constant distance from a material support in a direction of an X-axis and a Y-axis of an orthogonal coordinate system over a web (12) of a glass fiber fabric or a glass fiber fleece resting on the material support. A hold-down device holds the web in direct vicinity of the knife against the material support. The cutter head is movable in a direction of the Y-axis relative to the hold-down device, where the knife is movable along the hold-down device. An independent claim is also included for a method for cutting glass or carbon fiber textile web into elongated blanks.

Description

Die Erfindung betrifft eine Vorrichtung zum Schneiden von Glas- oder Kohlefasertextilbahnen in vorzugsweise langgestreckte Zuschnitte, mit einer Materialauflage, mindestens einem ein Schneidmesser tragenden Messerkopf, der in einem allgemein konstanten Abstand von der Materialauflage in Richtung einer X-Achse und einer Y-Achse eines orthogonalen Koordinatensystems gesteuert über eine auf der Materialauflage aufliegende Glas- oder Kohlefasertextilbahn bewegbar ist, sowie mindestens einem Niederhalter, der die Glas- oder Kohlefasertextilbahn in unmittelbarer Nachbarschaft des Schneidmessers gegen die Materialauflage anliegend festhält. Die Erfindung betrifft weiter ein Verfahren zum Schneiden von Glas- oder Kohlefasertextilbahnen in vorzugsweise langgestreckte Zuschnitte, bei dem die Glas- oder Kohlefasertextilbahn auf einer Materialauflage aufliegend zugeschnitten wird, wobei mindestens ein mit einem Schneidmesser bestückter Messerkopf in einem allgemein konstantem Abstand von der Materialauflage in Richtung einer X-Achse und einer Y-Achse eines orthogonalen Koordinatensystems gesteuert über die Glas- oder Kohlefasertextilbahn bewegt wird, die von mindestens einem Niederhalter gegen die Materialauflage angepresst wird.The invention relates to a device for cutting glass or carbon fiber textile webs in preferably elongate blanks, with a material support, at least one cutter head carrying a cutting blade, which in a generally constant distance from the material support in the direction of an X-axis and a Y-axis of an orthogonal Coordinate system controlled by a resting on the material support glass or carbon fiber fabric web is movable, and at least one downholder that holds the glass or carbon fiber fabric web adjacent to the cutting blade against the material support fitting. The invention further relates to a method for cutting glass or carbon fiber textile webs into preferably elongate blanks, in which the glass or carbon fiber textile web is cut to rest on a material support, wherein at least one knife head equipped with a cutting blade moves in a generally constant distance from the material support in the direction controlled by an X-axis and a Y-axis of an orthogonal coordinate system via the glass or carbon fiber textile web, which is pressed by at least one hold-down against the material support.

Aus der GB 1 332 518 ist bereits eine Vorrichtung zum Schneiden von Gewebematerial bekannt, bei der das Schneidmesser um eine zur Ebene einer Materialauflage senkrechte Achse drehbar ist, so dass es sich beim Schneiden von Kurven tangential zu den Kurven ausrichten kann. Das Schneidmesser wird von einem Messerkopf gehalten, der parallel zur Ebene der Materialauflage in zwei zueinander senkrechten Richtungen separat gesteuert verfahrbar ist, um das Schneidmesser mit zwei Freiheitsgraden der Bewegung entlang der Ränder der gewünschten Zuschnitte über das Gewebematerial zu bewegen. Dazu wird der Messerkopf in Richtung von einer Koordinatenachse eines orthogonalen Koordinatensystem an einer Traverse entlang bewegt, die in Richtung der anderen Koordinatenachse des Koordinatensystems über die Materialauflage verfahren wird.From the GB 1 332 518 An apparatus for cutting fabric material is already known, in which the cutting blade is rotatable about an axis perpendicular to the plane of a material support, so that it can align itself tangentially to the curves when cutting curves. The cutting blade is held by a cutter head which is separately movable parallel to the plane of the material support in two mutually perpendicular directions to transfer the cutting blade with two degrees of freedom of movement along the edges of the desired blanks to move the fabric material. For this purpose, the cutter head is moved in the direction of a coordinate axis of an orthogonal coordinate system on a traverse along which is moved in the direction of the other coordinate axis of the coordinate system on the material support.

Weiter ist aus der US 5 216 614 A eine ähnliche Vorrichtung der eingangs genannten Art bekannt, bei der ein Niederhalter in Form eines das Schneidmesser umgebenden Niederhalterfußes am Messerkopf befestigt ist und zusammen mit diesem über das zu schneidende Material bewegt wird.Next is from the US 5 216 614 A a similar device of the type mentioned, in which a hold-down in the form of a surrounding the cutting blade hold-down foot is attached to the cutter head and is moved together with this on the material to be cut.

Außerdem ist aus der EP 1 275 478 B1 eine Vorrichtung zum Schneiden biegeweicher flächiger Werkstücke bekannt, bei welcher der Messerkopf beiderseits des Schneidmessers einen Niederhalter in Form einer konischen Druckrolle trägt. Die Druckrollen sind jeweils um eine gegenüber der Materialauflage geneigte Achse drehbar, um die Niederhalter so weit wie möglich an das Schneidmesser anzunähern.Moreover, from the EP 1 275 478 B1 a device for cutting bending soft flat workpieces known, in which the cutter head carries a hold-down in the form of a conical pressure roller on both sides of the cutting blade. The pressure rollers are each rotatable about an axis inclined relative to the material support in order to approach the hold-downs as far as possible to the cutting blade.

Zum Zuschneiden von größeren Mengen an bahn- oder bogenförmigem luftdurchlässigem Material, wie zum Beispiel von textilen Werkstoffen für Bekleidungsstücke, wird das Material häufig vor dem Zuschneiden in mehreren Schichten übereinander auf eine ebene, mit einem Unterdruck beaufschlagbare Materialauflage aufgelegt und die oberste Materialschicht mit einer für Luft undurchlässigen Folie abgedeckt, um die Materialschichten durch den angelegten Unterdruck gegen die Materialauflage anzupressen und festzuhalten, während die Materialschichten und die Folie gemeinsam mit Hilfe eines Schneidmessers durchtrennt werden, wie dies zum Beispiel in der DE 196 046 16 A1 offenbart ist.For cutting larger amounts of web or sheet-like air-permeable material, such as textile materials for garments, the material is often placed on a flat, subjected to a negative pressure material layer before cutting in several layers on top of each other and the top layer of material with a for Covered air-impermeable film to press the material layers by the applied negative pressure against the material support and hold while the material layers and the film are cut together with the aid of a cutting knife, as for example in the DE 196 046 16 A1 is disclosed.

Wenn es sich jedoch bei dem zu schneidenden Material um eine für Luft durchlässige Glas- oder Kohlefasertextilbahn handelt, die in zugeschnittener Form zum Beispiel im Windkraftanlagenbau zur Fertigung von Rotorflügeln aus glasfaserverstärktem Kunststoff bzw. im Flugzeugbau zur Fertigung von Quer- oder Seitenrudern aus kohlefaserverstärktem Kunststoff eingesetzt werden soll, weist zumindest ein Teil der Zuschnitte häufig eine sehr große Länge auf. Dadurch muss zum einen auch die Materialauflage eine sehr große Länge aufweisen, wodurch sich ein großer Platzbedarf der Vorrichtung ergibt. Zum anderen macht es die große Länge der Zuschnitte erforderlich, die einzelnen Schichten des Materials und die Abdeckfolie von Hand auf die Materialauflage aufzulegen, um eine Faltenbildung zu vermeiden, und nach dem Zuschneiden die Zuschnitte auch wieder einzeln von Hand von den darunter liegenden Zuschnitten bzw. der Materialauflage abzunehmen, wodurch sich ein sehr hoher manueller Arbeitsaufwand ergibt.However, if the material to be cut is an air-permeable glass or carbon fiber textile web, which is to be used in tailored form, for example in wind turbine for the production of rotor blades made of glass fiber reinforced plastic or aircraft for the production of transverse or side rudders made of carbon fiber reinforced plastic, at least a portion of the blanks often has a very large length. As a result, on the one hand, the material support must have a very large length, which results in a large space requirement of the device. On the other hand, the large length of the blanks makes it necessary to apply the individual layers of the material and the cover film by hand on the material support to prevent wrinkling, and after cutting the blanks also individually by hand from the underlying blanks or Remove the material support, resulting in a very high manual labor.

Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art dahingehend zu verbessern, dass der Platzbedarf verringert und/oder der Automatisierungsgrad beim Zuschneiden des Materials erhöht werden kann.Proceeding from this, the invention has the object to improve a device of the type mentioned in that the space required reduced and / or the degree of automation in cutting the material can be increased.

Diese Aufgabe wird bei der erfindungsgemäßen Vorrichtung dadurch gelöst, dass der Messerkopf nicht in einer festen Lagebeziehung zum Niederhalter gehalten wird, sondern in Richtung der Y-Achse in Bezug zum Niederhalter verfahren wird, wobei sich das Schneidmesser während des gesamten Schneidvorgangs in unmittelbarer Nachbarschaft des Niederhalters an diesem entlang bewegt. Mit unmittelbarer Nachbarschaft wird im Rahmend der vorliegenden Patentanmeldung eine Entfernung von weniger als 60 mm, besser weniger als 50 mm und vorzugsweise zwischen 50 und 25 mm bezeichnet.This object is achieved in the device according to the invention in that the cutter head is not held in a fixed positional relationship to the hold-down, but is moved in the direction of the Y-axis with respect to the hold-down, wherein the cutting blade during the entire cutting process in the immediate vicinity of the blank holder moved along this. In the context of the present patent application, immediate proximity means a distance of less than 60 mm, better still less than 50 mm, and preferably between 50 and 25 mm.

Durch die erfindungsgemäßen Merkmale kann die Glas- oder Kohlefasertextilbahn vom Niederhalter zum einen über eine größere Fläche gegen die Materialauflage angepresst werden. Dies gestattet es, die Glas- oder Kohlefasertextilbahn gleichzeitig mit mehreren Schneidmessern zu bearbeiten, wobei der Niederhalter auch dann eine Faltenbildung in der Glas- oder Kohlefasertextilbahn verhindert, wenn sich die mit den Schneidmessern bestückten Messerköpfe aufeinander zu bewegen.Due to the features according to the invention, the glass or carbon fiber textile web can be pressed from the hold-down to a larger area against the material support. This makes it possible to machine the glass or carbon fiber web simultaneously with a plurality of cutting knives, the hold-down preventing wrinkling in the glass or carbon fiber web even when the cutter heads loaded with the cutting knives move toward each other.

Zum anderen kann der oder jeder Niederhalter nicht nur dazu dienen, die Glas- oder Kohlefasertextilbahn in unmittelbarer Nachbarschaft eines einzigen Schneidmessers gegen die Materialauflage anliegend festzuhalten, sondern kann diesen Zweck gleichzeitig für mehrere Schneidmesser erfüllen.On the other hand, the or each hold-down can serve not only to hold the glass or carbon fiber textile web in the immediate vicinity of a single cutting blade against the material support fitting, but can fulfill this purpose simultaneously for several cutting blades.

Der Erfindung liegt der Gedanke zugrunde, nicht wie bisher mehrere Schichten des zu schneidenden Materials übereinander zu legen und dann zuzuschneiden, sondern jeweils nur eine einzelne Schicht der Glas- oder Kohlefasertextilbahn. Um eine Reduzierung des Durchsatzes zu vermeiden, wird die Vorrichtung gemäß einer bevorzugten Ausgestaltung der Erfindung mit einer Mehrzahl von Messerköpfen versehen, die vorzugsweise einzeln, d.h. getrennt voneinander ansteuerbar sind und deren Schneidmesser entlang von einem oder bevorzugt mehreren Niederhaltern mit dem Material in Eingriff treten, so dass dieses gleichzeitig mit den Schneidmessern sämtlicher Messerköpfe geschnitten werden kann.The invention is based on the idea not to superimpose several layers of the material to be cut on top of each other and then to cut them, but in each case only a single layer of the glass or carbon fiber textile web. In order to avoid a reduction in throughput, the device according to a preferred embodiment of the invention is provided with a plurality of cutter heads which are preferably individually, i. can be controlled separately from one another and whose cutting blades engage with the material along one or more hold-downs, so that it can be cut simultaneously with the cutting blades of all the cutter heads.

Die im Rahmen der vorliegenden Patentanmeldung als Richtung der Y-Achse bezeichnete Richtung, in welcher der Messerkopf in Bezug zum Niederhalter verfahrbar ist, verläuft vorzugsweise quer über die zu schneidende Glas- oder Kohlefasertextilbahn. In der anderen der beiden zueinander senkrechten Richtungen, d.h. der Richtung der X-Achse, werden der Niederhalter und der Messerkopf hingegen vorteilhaft gemeinsam in Bezug zu der auf der Materialauflage liegenden Glas- oder Kohlefasertextilbahn in deren Längsrichtung bewegt, wobei sich das Schneidmessern zweckmäßig in einem vorbestimmten Abstand vor oder hinter dem Niederhalter her bewegt.The direction designated in the context of the present patent application as the direction of the Y-axis, in which the cutter head is movable relative to the hold-down device, preferably runs transversely across the glass or carbon fiber textile web to be cut. In the other of the two mutually perpendicular directions, ie the direction of the X-axis, the hold-down and the On the other hand, the cutter head advantageously moves together in relation to the glass or carbon fiber textile web lying on the material support in the longitudinal direction thereof, wherein the cutting blade expediently moves in front of or behind the hold-down device at a predetermined distance.

Um es zu ermöglichen, die Schnittrichtung des Schneidmessers zu verändern, ist der Messerkopf vorteilhaft gesteuert um eine zur X- und Y-Achse senkrechte Z-Achse drehbar. Das Schneidmesser ist zweckmäßig ein Ultraschall-Schneidmesser.In order to make it possible to change the cutting direction of the cutting blade, the cutter head is advantageously controlled to be rotatable about a Z-axis perpendicular to the X-axis and Y-axis. The cutting blade is expediently an ultrasonic cutting blade.

Um eine Faltenbildung in der Glas- oder Kohlefasertextilbahn zu verhindern, wenn sich der Niederhalter in Richtung der X-Achse über das Textilmaterial der Bahn bewegt, weist der Niederhalter vorteilhaft mindestens ein gegen das Textilmaterial der Bahn anliegendes, auf dem Textilmaterial abrollendes Andruckelement auf, wie beispielsweise eine Rolle oder einen über Rollen und/oder Gleitflächen geführten Riemen. Das Abrollen des Andruckelements kann entweder durch die Relativbewegung zwischen dem Niederhalter und der Textilbahn hervorgerufen werden, oder mit Hilfe eines Antriebs, der das Andruckelement mit einer der Geschwindigkeit der Relativbewegung entsprechenden Geschwindigkeit antreibt.In order to prevent wrinkling in the glass or carbon fiber textile web when the hold-down moves in the X-axis direction over the textile material of the web, the hold-down advantageously comprises at least one pressure element rolling against the textile material against the web, such as for example, a roll or guided over rollers and / or sliding surfaces belt. The rolling of the pressure element can be caused either by the relative movement between the hold-down and the textile web, or by means of a drive which drives the pressure element at a speed corresponding to the speed of the relative movement speed.

Eine vorteilhafte Ausgestaltung der Erfindung sieht vor, dass der Niederhalter eine langgestreckte Form besitzt und sich in Richtung der Y-Achse über die Materialauflage erstreckt. Grundsätzlich könnte zwar ein einzelner Niederhalter verwendet werden, der in seiner Längsrichtung mit einem schmalen Schlitz oder Spalt versehen ist, in dem das zu schneidende Material frei liegt, so dass es von dem oder den entlang des Schlitzes oder Spalts beweglichen Schneidmesser(n) geschnitten werden kann, jedoch beiderseits des Schlitzes oder Spalts vom Niederhalter gegen die Materialauflage angepresst wird. Jedoch werden bevorzugt zwei getrennte langgestreckte Niederhalter verwendet, die vorzugsweise vor bzw. hinter dem Schneidmesser angeordnet und parallel zueinander und zur Y-Achse ausgerichtet sind, wobei sie zwischen sich ebenfalls einen Schlitz oder Spalt begrenzen, in welchem das Schneidmesser in Richtung der Y-Achse verfahrbar ist. Wichtig ist, dass das zu schneidende Material auf zwei entgegengesetzten Seiten jedes Schneidmessers über eine größere Andruckfläche gegen die Materialauflage angepresst wird, wobei die Größe der eigentlichen Andruckfläche von der Art und Form der Niederhalter abhängig sein wird.An advantageous embodiment of the invention provides that the hold-down has an elongated shape and extends in the direction of the Y-axis over the material support. In principle, although a single hold down could be used, provided in its longitudinal direction with a narrow slot or gap in which the material to be cut is exposed so as to be cut by the cutting blade (s) movable along the slot or gap can, however, pressed on both sides of the slot or gap of the hold-down against the material support. however It is preferred to use two separate elongate hold-downs, which are preferably arranged in front of and behind the cutting blade and aligned parallel to each other and to the Y-axis, also defining therebetween a slot or gap in which the cutting blade is movable in the Y-axis direction is. It is important that the material to be cut is pressed on two opposite sides of each cutting blade over a larger pressure surface against the material support, the size of the actual pressure surface will depend on the type and shape of the hold-down.

Um den Platzbedarf der Vorrichtung klein zu halten, umfasst diese vorzugsweise eine stationäre Schneidestation, durch welche die Glas- oder Kohlefasertextilbahn in Richtung der X-Achse hindurchbewegt und dabei gleichzeitig mit einer Mehrzahl von Schneidmessern zugeschnitten wird. Die Niederhalter der Schneidestation sind dann bevorzugt ortsfest, wobei sie entlang der X-Achse in Abständen voneinander angeordnet sind und zwischen sich schmale, entlang der Y-Achse verlaufende Spalte begrenzen, durch welche die Schneidmesser der Messerköpfe in Richtung der Y-Achse verfahrbar sind.In order to keep the footprint of the device small, this preferably comprises a stationary cutting station through which the glass or carbon fiber textile web moves in the direction of the X-axis and is simultaneously cut with a plurality of cutting blades. The hold-downs of the cutting station are then preferably stationary, wherein they are spaced along the X-axis and delimit between them narrow, along the Y-axis extending column through which the cutting blades of the cutter heads in the direction of the Y-axis are movable.

In diesem Fall umfasst die Materialauflage vorteilhaft ein mit einer Auflagefläche für die Glas- oder Kohlefasertextilbahn versehenes Transportelement, das zusammen mit der Glas- oder Kohlefasertextilbahn durch die stationäre Schneidestation hindurchbewegt wird. Um eine Faltenbildung zu verhindern, werden hier die Andruckelemente der Niederhalter zweckmäßig mit derselben Geschwindigkeit wie das Transportelement angetrieben. Dort, wo eine ebene Materialauflage vorgesehen ist, kann das Transportelement zweckmäßig von einem angetriebenen Förderorgan eines Endlosförderers gebildet werden. Jedoch kann auch eine gekrümmte Materialauflage mit einem Transportelement in Form einer drehbaren Walze vorgesehen sein, auf deren Umfangsfläche die Glas- oder Kohlefasertextilbahn aufliegt, wobei sie sich unter Drehung der Walze durch die stationäre Schneidstation hindurchbewegt.In this case, the material support advantageously comprises a transport element provided with a support surface for the glass or carbon fiber textile web, which is moved through the stationary cutting station together with the glass or carbon fiber textile web. To prevent wrinkling, the pressure elements of the holddown are expediently driven at the same speed as the transport element here. Wherever a flat material support is provided, the transport element can be suitably formed by a driven conveying member of an endless conveyor. However, a curved material support may be provided with a transport element in the form of a rotatable roller, on its peripheral surface the glass or carbon fiber textile web rests, whereby it moves through the stationary cutting station with rotation of the roller.

Alternativ oder zusätzlich kann jedoch auch eine mobile Schneidestation vorgesehen sein, die sich in Richtung der X-Achse über die auf einem stationären Auflagetisch oder einem Förderorgan eines Endlosförderers abgelegte Glas- oder Kohlefasertextilbahn verfahren lässt. In diesem Fall sind die Messerköpfe vorzugsweise zusammen mit den Niederhaltern in Richtung der X-Achse und getrennt von den Niederhaltern in Richtung der Y-Achse gesteuert über den Auflagetisch verfahrbar.Alternatively or additionally, however, it is also possible to provide a mobile cutting station which can be moved in the direction of the X axis via the glass or carbon fiber textile web deposited on a stationary support table or a conveying member of an endless conveyor. In this case, the cutter heads are preferably movable along the support table in the direction of the X-axis together with the hold-downs and controlled separately from the hold-downs in the direction of the Y-axis.

Das Abnehmen der geschnittenen Zuschnitte von der Oberseite der Materialauflage wird vorzugsweise ebenfalls ganz oder teilweise automatisiert, indem die geschnittenen Zuschnitte in einer Aufwickelstation einzeln auf Aufwickelhülsen aufgewickelt werden. In dem Fall, wo die Materialauflage ein bewegliches Transportelement umfasst, wie z.B. einen Endlosförderer, ist die Aufwickelstation vorzugsweise stationär und befindet sich an einem Stirnende eines zusätzlichen Transportelements, z.B. eines weiteren Endlosförderers, das in Bewegungsrichtung der Glas- oder Kohlefasertextilbahn zwischen dem Transportelement der Materialauflage und der Aufwickelstation angeordnet ist bzw. sich an das Transportelement der Materialauflage anschließt, so dass das Aufwickeln der Zuschnitte unabhängig von der Bearbeitungsgeschwindigkeit in der Schneidestation vorgenommen werden kann. Im Fall einer stationären Materialauflage kann hingegen eine mobile Aufwickelstation verwendet werden, die sich zum Aufnehmen der Zuschnitte über die auf der Materialauflage liegenden Zuschnitte verfahren lässt.The removal of the cut blanks from the top of the material support is also preferably fully or partially automated by winding the cut blanks individually on reeling sleeves in a reeling station. In the case where the material support comprises a movable transport element, such as an endless conveyor, the take-up station is preferably stationary and located at a front end of an additional transport element, eg another endless conveyor, in the direction of movement of the glass or carbon fiber web between the transport element of the material support and the winding station is arranged or adjoins the transport element of the material support, so that the winding of the blanks can be carried out independently of the processing speed in the cutting station. In the case of a stationary material support, however, a mobile winding station can be used, which can be moved to take the blanks on the blanks lying on the material support.

Um es zu ermöglichen, zwei benachbarte Zuschnitte auch dann problemlos auf zwei separate Aufwickelhülsen aufzuwickeln, wenn ein die beiden Zuschnitte trennender Schnitt nicht parallel sondern beispielsweise unter einem Winkel zur Längsmittelachse der Glas- oder Kohlefasertextilbahn ausgerichtet ist und daher einer der beim Aufwickeln der Zuschnitte gebildeten Wickel allmählich breiter und der andere allmählich schmaler wird, sieht eine weitere bevorzugte Ausgestaltung der Erfindung vor, dass die Aufwickelstation zum Aufstecken der Aufwickelhülsen mindestens zwei Wickeldorne umfasst, deren Drehachsen einen Abstand voneinander aufweisen. Zum Aufwickeln der Zuschnitte auf die Aufwickelhülsen werden die Aufwickelhülsen zweckmäßig in Drehung versetzt, indem ihre Wickeldorne motorisch angetrieben werden.To make it possible to easily wind two adjacent blanks onto two separate wind-up sleeves even when a cut separating the two blanks is not parallel but, for example, oriented at an angle to the longitudinal central axis of the glass or carbon fiber web and therefore one of the reels formed upon winding the blanks gradually wider and the other gradually becomes narrower, provides a further preferred embodiment of the invention that the Aufwickelstation for attaching the Aufwickelhülsen comprises at least two mandrels whose axes of rotation have a distance from each other. To wind the blanks on the take-up sleeves, the take-up sleeves are expediently rotated by their mandrels being driven by a motor.

Bei dem erfindungsgemäßen Verfahren kann entweder die auf der Materialauflage aufliegende Glas- oder Kohlefasertextilbahn zusammen mit mindestens einem Teil der Materialauflage durch eine ortsfeste Schneidestation hindurchbewegt werden, wo sie von dem mindestens einen Niederhalter gegen die Materialauflage angepresst und mit dem Schneidmesser des mindestens einen Messerkopfs geschnitten wird, und/oder eine den mindestens einen Messerkopf und den mindestens einen Niederhalter umfassende mobile Schneidstationüber kann über die auf der Materialauflage aufliegende Glas- oder Kohlefasertextilbahn bewegt werden, die von dem mindestens einen Niederhalter gegen die Materialauflage angepresst und mit dem Schneidmesser geschnitten wird. Zweckmäßig ist sowohl eine ortsfeste und eine mobile Schneidestation vorgesehen, in denen die Glas- oder Kohlefasertextilbahn jeweils teilweise geschnitten wird. Dabei werden lange, allgemein in X-Richtung verlaufende Schnitte vorzugsweise in der stationären Schneidestation und kürzere, allgemein in Y-Richtung verlaufende Schnitte vorzugsweise in der mobilen Schneidestation hergestelltIn the method according to the invention either the resting on the material support glass or carbon fiber fabric can be moved through at least a portion of the material support through a fixed cutting station where it is pressed by the at least one hold-down against the material support and cut with the cutting blade of the at least one cutter head , and / or a mobile cutting station comprising the at least one cutter head and the at least one hold-down can be moved over the glass or carbon fiber textile web resting on the material support, which is pressed against the material support by the at least one hold-down device and cut with the cutting knife. Suitably, both a stationary and a mobile cutting station is provided in which the glass or carbon fiber textile web is partially cut in each case. In this case, long cuts, generally in the X-direction, are preferably produced in the stationary cutting station and shorter cuts, generally running in the Y-direction, are preferably made in the mobile cutting station

Im Folgenden wird die Erfindung anhand einiger in der Zeichnung dargestellter Ausführungsbeispiele näher beschrieben. Es zeigen:

  • Fig. 1 eine schematische perspektivische Darstellung einer Vorrichtung zum Schneiden von bahnförmigem Glasfasergewebe oder Glasfaservlies in langgestreckte Zuschnitte;
  • Fig. 2 eine Seitenansicht der Vorrichtung aus Fig. 1;
  • Fig. 3 eine vergrößerte Darstellung einer stationären Schneidstation der Vorrichtung aus Fig. 1;
  • Fig. 4 eine vergrößerte Darstellung eines Ausschnitts aus Fig. 2;
  • Fig. 5 eine schematische perspektivische Darstellung einer modifizierten Vorrichtung;
  • Fig. 6 eine perspektivische Ansicht einer Anlage, die neben der stationären Schneidstation der Vorrichtung aus Fig. 1 eine Abwickelstation zum Abwickeln des bahnförmigen Glasfasergewebes oder Glasfaservlieses und eine Aufwickelstation zum Aufwickeln der Zuschnitte umfasst;
  • Fig. 7 eine vergrößerte perspektivische Ansicht der Schneidstation und der Abwickelstation;
  • Fig. 8 eine Seitenansicht der Schneidstation und der Abwickelstation aus Fig. 7;
  • Fig. 9 eine vergrößerte perspektivische Ansicht der Aufwickelstation;
  • Fig. 10 eine Seitenansicht der Aufwickelstation aus Fig. 9.
In the following the invention will be described with reference to some embodiments shown in the drawings. Show it:
  • Fig. 1 a schematic perspective view of an apparatus for cutting web-shaped glass fiber fabric or glass fiber fleece in elongated blanks;
  • Fig. 2 a side view of the device Fig. 1 ;
  • Fig. 3 an enlarged view of a stationary cutting station of the device Fig. 1 ;
  • Fig. 4 an enlarged view of a section from Fig. 2 ;
  • Fig. 5 a schematic perspective view of a modified device;
  • Fig. 6 a perspective view of a plant, in addition to the stationary cutting station of the device Fig. 1 an unwinding station for unwinding the web of glass fiber web or glass fiber web and a rewind station for winding the blanks;
  • Fig. 7 an enlarged perspective view of the cutting station and the unwinding station;
  • Fig. 8 a side view of the cutting station and the unwinding from Fig. 7 ;
  • Fig. 9 an enlarged perspective view of the winding station;
  • Fig. 10 a side view of the Aufwickelstation Fig. 9 ,

Die in Fig. 1 dargestellte Vorrichtung 10 wird eingesetzt, um eine Bahn 12 aus einem Glasfasergewebe oder Glasfaservlies gleichzeitig in eine Mehrzahl von schmalen langgestreckten Zuschnitten 14 zu schneiden, die anschließend bei der Herstellung von Rotorflügeln aus glasfaserverstärktem Kunststoff Verwendung finden, wie sie zum Beispiel für Windkraftanlagen benötigt werden.In the Fig. 1 The illustrated apparatus 10 is used to simultaneously cut a web 12 of glass fiber fabric or fiberglass fabric into a plurality of narrow elongated blanks 14 which are subsequently used in the manufacture of glass fiber reinforced plastic rotor blades, such as are required for wind turbines.

Die in den Figuren 1 bis 4 dargestellte Vorrichtung 10 umfasst eine Materialauflage 16, auf der die zu schneidende Bahn 12 während des Schneidens aufliegt, sowie eine erste und eine zweite Schneidestation 18, 20. Die beiden Schneidestationen 18, 20 umfassen eine Mehrzahl von Messerköpfen 22, die in Bezug zu der auf der Materialauflage 16 aufliegenden Bahn 12 gesteuert in Richtung einer X-Achse und in Richtung einer Y-Achse eines orthogonalen Koordinatensystems verfahrbar sind und jeweils ein Ultraschall-Schneidmesser 24 tragen, das sich mit der Bahn 12 in Eingriff bringen lässt, um diese durch Relativbewegungen zwischen den Messerköpfen 22 und der Bahn 12 in die einzelnen Zuschnitte 14 zu schneiden. Jede der beiden Schneidestationen 18, 20 umfasst außerdem mindestens zwei Niederhalter 26, die sich von oben her gegen die auf der Materialauflage 16 aufliegende Bahn 12 anpressen lassen, um diese in unmittelbarer Nachbarschaft der Schneidmesser 24 flächig gegen die Materialauflage 16 anliegend festzuhalten und eine Faltenbildung in der Bahn 12 zu vermeiden.The in the FIGS. 1 to 4 illustrated apparatus 10 includes a material support 16, on which the web to be cut 12 rests during cutting, and a first and a second cutting station 18, 20. The two cutting stations 18, 20 comprise a plurality of cutter heads 22, with respect to the on the material support 16 resting track 12 controlled in the direction of an X-axis and in the direction of a Y-axis of an orthogonal coordinate system are movable and each carry an ultrasonic cutting blade 24 which can be brought into engagement with the web 12 to this by relative movements between to cut the cutter heads 22 and the web 12 into the individual blanks 14. Each of the two cutting stations 18, 20 also includes at least two hold-down 26, which can be pressed against the resting on the material support 16 web 12 from above to hold them in the immediate vicinity of the cutting blade 24 surface against the material support 16 fitting and wrinkling in the web 12 to avoid.

Wie in Fig. 4 dargestellt, besteht die Materialauflage 16 im Wesentlichen aus einem langgestreckten stationären Auflagetisch 28 und einem Endlosförderer 30 mit einem in Längsrichtung um den Auflagetisch 28 umlaufenden angetriebenen endlosen Förderband 32, dessen oberes Fördertrum 34 sich in Richtung der Bewegung der Bahn 12 über die Oberseite des Auflagetischs 28 bewegt und dessen unteres Leertrum 36 unterhalb des Auflagetischs 28 zurück geführt wird. Der Endlosförderer 30 weist zwei Umlenkrollen 38, 40 für das Förderband 32 auf, die mittels zweier Drehantriebe (nicht dargestellt) mit steuerbarer Drehzahl wahlweise mit einer gewünschten Drehgeschwindigkeit angetrieben werden können, um das Förderband 32 mit der aus seiner Oberseite aufliegenden Bahn 12 in Richtung der X-Achse vor- und zurück zu bewegen.As in Fig. 4 As shown, the material support 16 consists essentially of an elongated stationary support table 28 and an endless conveyor 30 with a longitudinally driven around the support table 28 driven endless Conveyor belt 32, the upper conveying strand 34 moves in the direction of movement of the web 12 over the top of the support table 28 and the lower empty strand 36 is guided below the support table 28 back. The endless conveyor 30 has two pulleys 38, 40 for the conveyor belt 32, which can be driven by means of two rotary actuators (not shown) with controllable speed optionally with a desired rotational speed to the conveyor belt 32 with the resting from its top web 12 in the direction of Move X-axis back and forth.

Jeder der Messerköpfe 22 weist einen steuerbaren Antrieb auf, mit dem das zugehörige Schneidmesser 24 um eine zur Oberseite der Materialauflage 16 senkrechte Z-Achse gedreht und in Richtung der Z-Achse verfahren werden kann, so dass sich das Schneidmesser 24 zum einen immer in Schnittrichtung ausrichten und zum anderen zum Schneiden in Richtung der Materialauflage 16 vertikal zustellen lässt, um es mit der Bahn 12 in Eingriff zu bringen.Each of the cutter heads 22 has a controllable drive with which the associated cutting blade 24 can be rotated about a Z axis perpendicular to the upper side of the material support 16 and moved in the direction of the Z axis so that the cutting blade 24 is always in the cutting direction Align and on the other hand for cutting in the direction of the material support 16 can be vertical to bring it with the web 12 into engagement.

Bei den Schneidmessern 24 handelt es sich um Ultraschall-Schneidmesser, die zum Schneiden in Ultraschallschwingungen versetzt werden, um das Schneiden zu erleichtern. Ultraschall-Schneidmesser sind an sich bekannt und sollen daher hier nicht näher erläutert werden.The cutting knives 24 are ultrasonic cutting knives which are vibrated to cut in order to facilitate cutting. Ultrasonic cutting blades are known and should therefore not be explained in detail here.

Wie am besten in Fig. 1 dargestellt, erstreckt sich jeder der langgestreckten Niederhalter 26 in Richtung der Y-Achse über die gesamte Breite der Bahn 12. Zwischen zwei benachbarten Niederhaltern 26 sind jeweils zwei Messerköpfe 22 angeordnet, die von einer gemeinsamen Traverse 42 (Fig. 4) getragen werden, welche sich in der Mitte zwischen benachbarten Niederhaltern 26 in Richtung der Y-Achse über die Materialauflage 16 erstreckt. Die an jeder Traverse 42 angebrachten Messerköpfe 22 sind einzeln und unabhängig voneinander entlang der Traverse 42 verfahrbar und lassen sich einzeln mittels ihres steuerbaren Antriebs in Bezug zur Traverse 42 um die Z-Achse drehen, um ihr Schneidmesser 24 aktiv der jeweiligen Schnittrichtung nachzuführen. Die Anzahl der an einer Traverse 42 verfahrbaren Messerköpfe 22 kann eins, wie in der Schneidstation 20, zwei, wie in der Schneidstation 18, oder ggf. auch mehr als zwei betragen.How best in Fig. 1 shown, each of the elongated hold-down device 26 extends in the direction of the Y-axis over the entire width of the web 12. Between two adjacent hold-downs 26 are each two cutter heads 22 arranged by a common crossbar 42 (FIGS. Fig. 4 ) which extends in the middle between adjacent hold-downs 26 in the direction of the Y axis over the material support 16. The cutter heads 22 attached to each crosshead 42 are individually and independently along the traverse 42 and can be individually by means of their controllable drive with respect to the crosshead 42 rotate about the Z axis to actively track their cutting blade 24 of the respective cutting direction. The number of cutter heads 22 that can be moved on a traverse 42 may be one, as in the cutting station 20, two, as in the cutting station 18, or possibly more than two.

Wie in Fig. 3 und 4 beispielhaft dargestellt, umfassen die Niederhalter 26 jeweils eine Mehrzahl von parallelen Riemen 44, die sich in einem geringen seitlichen Abstand voneinander über eine Reihe von drehbaren Rollen 46, 48 erstrecken, deren Drehachsen parallel zueinander und zur Y-Achse ausgerichtet sind. Die Rollen 46, 48 sind so angeordnet, dass die Niederhalter 26 im Querschnitt den Umriss eines Dreiecks mit einer gerundeten Spitze aufweisen, dessen Grundfläche parallel zur Materialauflage 16 ausgerichtet ist und in Richtung der X-Achse eine Breite von mehr als 200 mm besitzt. Jeweils eine der Rollen 48 weist einen größeren Durchmesser auf und kann mittels eines Drehantriebs (nicht dargestellt) mit veränderlicher Drehzahl und umkehrbarer Drehrichtung antrieben werden. Die Drehantriebe der angetriebenen Rollen 48 der Niederhalter 26 und die Drehantriebe der Umlenkrollen 38, 40 des Endlosförderers 30 sind mit einer gemeinsamen Steuerung verbunden, von der sie so angesteuert werden, dass die Bewegungsgeschwindigkeit und Bewegungsrichtung der Riemen 44 der Bewegungsgeschwindigkeit und der Bewegungsrichtung des Förderbandes 32 entspricht, um jegliche Relativbewegung zwischen den gegen die Oberseite der Bahn 12 anliegenden Niederhaltern 26 und dem gegen die Unterseite der Bahn 12 anliegenden Förderband 32 zu vermeiden.As in 3 and 4 Illustrated by way of example, the hold-down devices 26 each include a plurality of parallel belts 44 extending at a slight lateral distance from each other across a series of rotatable rollers 46, 48 whose axes of rotation are parallel to each other and to the Y-axis. The rollers 46, 48 are arranged so that the hold-downs 26 in cross section have the outline of a triangle with a rounded tip whose base is aligned parallel to the material support 16 and in the direction of the X-axis has a width of more than 200 mm. In each case one of the rollers 48 has a larger diameter and can be driven by means of a rotary drive (not shown) with variable speed and reversible direction of rotation. The rotary drives of the driven rollers 48 of the hold-down 26 and the rotary drives of the guide rollers 38, 40 of the endless conveyor 30 are connected to a common control, by which they are controlled so that the movement speed and direction of movement of the belt 44, the speed of movement and the direction of movement of the conveyor belt 32nd corresponds to avoid any relative movement between the down against the top of the web 12 downers 26 and abutting against the underside of the web 12 conveyor belt 32.

Die parallelen Niederhalter 26 sind in Richtung der X-Achse in einem geringen Abstand voneinander angeordnet, so dass zwischen den benachbarten Niederhaltern 26 nur schmale Schlitze oder Spalte 50 mit einer Breite von etwa 100 mm vorhanden sind, in denen die zu schneidende Bahn 12 frei liegt. Bei der Bewegung der Messerköpfe 22 entlang der Traversen 42 bewegen sich ihre Schneidmesser 24 jeweils entlang von einem dieser Spalte 50, so dass der Abstand der Schneidmesser 24 von den beiden benachbarten Niederhaltern 26 entlang des gesamten Bewegungswegs der Schneidmesser 24 vorteilhaft weniger als 30 mm und maximal etwa 60 mm beträgt.The parallel hold-downs 26 are arranged at a small distance from one another in the direction of the X-axis, so that only narrow slots or gaps 50 with a width of approximately 100 mm are present between the adjacent hold-downs 26, in which the web 12 to be cut is exposed , As the cutter heads 22 move along the traverses 42, their cutting blades 24 each move along one of these gaps 50, so that the distance of the cutter blades 24 from the two adjacent downers 26 along the entire travel of the cutting blades 24 is advantageously less than 30 mm and maximum about 60 mm.

Die erste Schneidestation 18 ist eine stationäre Schneidestation 18, in der sowohl die Niederhalter 26 und die als Halterung für die Messerköpfe 24 dienenden Traversen 42 in Bezug zum Materialauflagetisch 28 und in Bezug zueinander unbeweglich sind. In dieser Schneidestation 18 werden bevorzugt lange Schnitte durch das Glasfasergewebe oder Glasfaservlies hergestellt, die parallel oder unter einem spitzen Winkel zur X-Achse verlaufen, um die nebeneinander liegenden langgestreckten Zuschnitte 14 entlang ihrer Längsseitenränder 51 vom Rest der Bahn 12 zu trennen. Bei dem in der Zeichnung dargestellten Ausführungsbeispiel weist die Schneidstation 18 insgesamt acht Messerköpfe 22 auf, so dass gleichzeitig vier langgestreckte Zuschnitte 14 aus der Bahn 12 ausgeschnitten werden können, deren Längsseitenränder 51 im Abstand voneinander angeordnet sind.The first cutting station 18 is a stationary cutting station 18 in which both the hold-downs 26 and the trusses 42 serving as support for the cutter heads 24 are immovable with respect to the material support table 28 and with respect to one another. In this cutting station 18, long cuts are preferably made through the glass fiber fabric or fiberglass fabric which are parallel or at an acute angle to the X axis to separate the adjacent elongated blanks 14 along their longitudinal side edges 51 from the remainder of the web 12. In the embodiment shown in the drawing, the cutting station 18 has a total of eight cutter heads 22, so that at the same time four elongated blanks 14 can be cut out of the web 12, the longitudinal side edges 51 are arranged at a distance from each other.

Zum Schneiden der Bahn 12 in Richtung der X-Achse werden hier die Umlenkrollen 38, 40 des Endlosförderers 30 und die Antriebsrollen 48 der Niederhalter 26 angetrieben, um die Bahn 12 durch eine synchrone Bewegung des Förderbandes 32 und der Riemen 44 in Bezug zu den Schneidmessern 24 zu bewegen. Wenn die Schnitte in Bezug zur X-Achse unter einem Neigungswinkel verlaufen sollen, werden darüber hinaus die Messerköpfe 24 gleichzeitig zwischen den beiden benachbarten Niederhaltern 26 in Richtung dieser Neigung entlang der Y-Achse verfahren, so dass sie sich insgesamt gesehen unter dem Neigungswinkel über die Bahn 12 bewegen. Außerdem wird das Schneidmesser 24 jedes Messerkopfs 22 mittels des steuerbaren Antriebs des Messerkopfs 22 um die Z-Achse gedreht, um es in Schnittrichtung auszurichten.For cutting the web 12 in the direction of the X-axis here are the pulleys 38, 40 of the endless conveyor 30 and the drive rollers 48 of the hold-down 26 driven to the web 12 by a synchronous movement of the conveyor belt 32 and the belt 44 with respect to the cutting blades 24 to move. When the cuts are at a tilt angle with respect to the X axis In addition, the cutter heads 24 are simultaneously moved between the two adjacent hold-downs 26 in the direction of this inclination along the Y-axis, so that they move overall over the web 12 at the angle of inclination. In addition, the cutting blade 24 of each cutter head 22 is rotated about the Z-axis by the controllable drive of the cutter head 22 to align it in the cutting direction.

Die zweite Schneidestation 20 ist eine mobile Schneidstation, die mit Hilfe eines mit der Steuerung verbundenen und von dieser angesteuerten Antriebs (nicht dargestellt) in Richtung der X-Achse über den Materialauflagetisch 28 verfahrbar ist. Die zweite Schneidestation 20 dient bevorzugt zur Herstellung von kürzeren, allgemein in Y-Richtung durch die Bahn 12 verlaufenden geraden und/oder gekrümmten Schnitten, welche die langgestreckten Zuschnitte 14 an ihren Stirnenden 52 vom Rest der Bahn 12 trennen. Entsprechend der geringeren Länge dieser Schnitte reicht in der zweiten Schneidestation 20 eine geringere Anzahl von Messerköpfen 22 aus, wie zum Beispiel einer, um diese Schnitte in einem ähnlichen Zeitraum wie die langen Schnitte in der ersten Schneidestation 18 herzustellen. Bei der in der Zeichnung dargestellten Vorrichtung 10 ist die stationäre Schneidestation 18 in Bewegungsrichtung der Bahn 12 hinter der mobilen Schneidestation 20 angeordnet, jedoch kann die Anordnung auch umgekehrt sein.The second cutting station 20 is a mobile cutting station which is movable over the material support table 28 in the direction of the X-axis by means of a drive (not shown) connected to the control and driven by the latter. The second cutting station 20 preferably serves to produce shorter, straight and / or curved cuts extending generally through the web 12 in the Y direction, separating the elongate blanks 14 at their face ends 52 from the remainder of the web 12. Corresponding to the shorter length of these cuts, in the second cutting station 20, a smaller number of cutter heads 22 are sufficient, such as one to make these cuts in a similar period of time as the long cuts in the first cutting station 18. In the apparatus 10 shown in the drawing, the stationary cutting station 18 is arranged in the direction of movement of the web 12 behind the mobile cutting station 20, but the arrangement may also be reversed.

Wenn die Schnitte in der stationären und der mobilen Schneidestation 18, 20 gleichzeitig hergestellt werden sollen, berechnet die Steuerung die dafür erforderliche Bewegung der mobilen Schneidestation 20 in Richtung der X-Achse in Abhängigkeit von der augenblicklichen Bewegung der Bahn 12 in dieser Richtung und steuert dann die Bewegung des Messerkopfs 24 oder der Messerköpfe 22 der mobilen Schneidestation 20 in Y-Richtung entsprechend der Überlagerung der Bewegungen der Schneidestation 20 und der Bahn 12 in Richtung der X-Achse.If the cuts in the stationary and mobile cutting stations 18, 20 are to be made simultaneously, the controller calculates the required movement of the mobile cutting station 20 in the X-axis direction in response to the instantaneous movement of the web 12 in that direction and then controls the movement of the cutter head 24 or the cutter heads 22 of the mobile cutting station 20 in the Y direction according to the superposition of the movements of the cutting station 20 and the web 12 in the direction of the X-axis.

Alternativ ist es jedoch auch möglich, die Schnitte in der mobilen Schneidestation 20 während eines Stillstands des Förderbandes 32 in die Bahn 12 einzubringen, um die Berechnung zu vereinfachen. In diesem Fall wird der Messerkopf 24 der mobilen Schneidestation 20 in Richtung der Y-Achse bewegt, während die gesamte Schneidestation 20 einschließlich Traverse 42 (nicht dargestellt) und Niederhaltern 26 in Richtung der X-Achse bewegt wird, wobei die Bewegungsgeschwindigkeiten entsprechend der gewünschten Schnittrichtung aufeinander abgestimmt werden und das Schneidmesser 24 durch Drehen des Messerkopfs 22 um die Z-Achse in Schnittrichtung ausgerichtet wird.Alternatively, however, it is also possible to introduce the cuts in the mobile cutting station 20 into the web 12 during a standstill of the conveyor belt 32 in order to simplify the calculation. In this case, the cutter head 24 of the mobile cutting station 20 is moved in the Y-axis direction, while the entire cutting station 20 including traverse 42 (not shown) and hold-downs 26 are moved in the X-axis direction, with the moving speeds corresponding to the desired cutting direction are matched and the cutting blade 24 is aligned by rotating the cutter head 22 about the Z axis in the cutting direction.

Um die Anpressung der Bahn 12 gegen die Materialauflage 16 zu unterstützen, kann der Auflagetisch 28 mit einem Unterdruck beaufschlagbar sein, der durch Öffnungen in der Oberseite des Auflagetischs 28 und das luftdurchlässige Förderband 32 an der auf der Oberseite des Förderbands 32 aufliegenden Bahn angelegt wird.In order to support the pressing of the web 12 against the material support 16, the support table 28 may be acted upon by a negative pressure which is applied through openings in the top of the support table 28 and the air-permeable conveyor belt 32 at the resting on the top of the conveyor belt 32.

Fig. 5 zeigt einen Teil einer modifizierten Vorrichtung 10, bei der die Materialauflage 16 von einer drehend angetriebenen Walze 54 gebildet wird, gegen deren Umfangsfläche 56 die zu schneidende Bahn 12 über einen kleinen Umfangswinkel von weniger als 20 Grad anliegt, um bei Bahnen 12 aus einem Glasfasergewebe Aufspreizen des geschnittenen Gewebes zu verhindern. Der in dieser Figur beispielhaft dargestellte Messerkopf 22 einer stationären Schneidestation 18 ist in Richtung der Y-Achse parallel zur Drehachse der Walze 54 durch einen langgestreckten schmalen Spalt 50 zwischen zwei benachbarten Niederhaltern 26 bewegbar. Die Niederhalter 26 bestehen hier aus mehreren Rollen 58, von denen beiderseits des Schneidmessers 24 jeweils nur eine dargestellt ist. Die Rollen 58 besitzen einen im Vergleich zum Durchmesser der Walze 54 geringeren Durchmesser und zur Drehachse der Walze 54 parallele Drehachsen und dienen dazu, die Bahn 12 in Richtung der X-Achse beiderseits des Schneidmessers 24 bzw. des Spaltes 50 gegen die zylindrische Umfangsfläche der Walze 54 anzupressen. Fig. 5 FIG. 12 shows a portion of a modified apparatus 10 in which the material support 16 is formed by a rotatably driven roller 54, against the peripheral surface 56 of which the web 12 to be cut rests over a small circumferential angle of less than 20 degrees to spread on webs 12 of glass fiber fabric to prevent the cut tissue. The knife head 22 of a stationary cutting station 18 exemplified in this figure is movable in the direction of the Y-axis parallel to the axis of rotation of the roller 54 through an elongated narrow gap 50 between two adjacent hold-downs 26. The hold-down 26 consist here of several rollers 58, of which both sides of the cutting blade 24 only one is shown. The rollers 58 have a smaller diameter compared to the diameter of the roller 54 and axes of rotation parallel to the axis of rotation of the roller 54 and serve to move the web 12 in the direction of the X-axis on either side of the cutting blade 24 and the gap 50 against the cylindrical peripheral surface of the roller 54 to press.

Fig. 6 zeigt eine Anlage 60, die eine mit zwei Vorratsrollen 62 des bahnförmigen Glasfasergewebes 12 bestückte Abwickelstation 64, eine stationäre Schneidestation 18 zum Schneiden der abgewickelten Gebewebebahn 12 in einzelne Zuschnitte 14 und eine Aufwickelstation 66 zum Aufwickeln der Zuschnitte 14 umfasst, die in Bewegungsrichtung der Gewebebahn 12 bzw. der Zuschnitte 14 (Pfeil A) entlang der X-Achse hintereinander angeordnet sind. Fig. 6 1 shows an installation 60 which comprises an unwinding station 64 equipped with two supply rolls 62 of the web-like glass fiber fabric 12, a stationary cutting station 18 for cutting the unwound fabric 12 into individual blanks 14 and a winding station 66 for winding the blanks 14 in the direction of movement of the fabric web 12 or the blanks 14 (arrow A) along the X-axis are arranged one behind the other.

Wie am besten in Fig. 7 und 8 dargestellt, umfasst die Abwickelstation 64 zwei oberhalb der Materialauflage 16 hintereinander angeordnete, auf einem stationären Tragrahmen 74 abgestützte Lagerböcke 68, auf denen jeweils eine der Vorratsrollen 62 drehbar gelagert ist. Jeder Lagerbock 68 trägt weiter eine unterhalb der Vorratsrolle 62 angeordnete drehbare Umlenkrolle 70, die sicherstellt, dass die Gewebebahn 12 bereits in einen geringen Abstand hinter der Abwickelstation 64 auf einem Förderband eines Endlosförderers 82 der Abwickelstation 64 aufliegt, dessen Ausbildung im Wesentlichen derjenigen des Endlosförderers 30 entspricht.How best in FIGS. 7 and 8 illustrated, the unwinding 64 includes two above the material support 16 arranged one behind the other, supported on a stationary support frame 74 bearing blocks 68, on each of which one of the supply rollers 62 is rotatably mounted. Each bearing block 68 further carries a arranged below the supply roll 62 rotatable guide roller 70, which ensures that the fabric web 12 already rests a small distance behind the unwinding station 64 on a conveyor belt of an endless conveyor 82 of the unwinding station 64, whose formation is substantially that of the endless conveyor 30th equivalent.

Im Unterschied zu Fig. 1 und 2 ist die in Fig. 6 und 7 dargestellte stationäre Schneidestation 18 in Bewegungsrichtung der Gewebebahn 12 vor der mobilen Schneidestation 20 angeordnet, deren Traverse 42 zusammen mit dem Messerkopf 22 und den beiden Niederhaltern 26 in Richtung des Doppelpfeils B in Fig. 7 gegenüber einem stationären Tragrahmen 72 der beiden Schneidestationen 18, 20 verfahrbar ist.In contrast to Fig. 1 and 2 is the in Fig. 6 and 7 shown stationary cutting station 18 arranged in the direction of movement of the fabric web 12 in front of the mobile cutting station 20, the cross member 42 together with the cutter head 22 and the two downholders 26 in the direction of the double arrow B. in Fig. 7 relative to a stationary support frame 72 of the two cutting stations 18, 20 is movable.

Bei der in Fig. 6 dargestellten Anlage 60 schließen sich an den Endlosförderer 30 der Materialauflage 16 nacheinander weitere Endlosförderer 76, 78, 80 an, deren Ausbildung im Wesentlichen ebenfalls der Ausbildung des Endlosförderers 30 entspricht. Die Endlosförderer 76, 78, 80 sind wie die Endlosförderer 30 und 82 auf Tragrahmen montiert, so dass die Oberseiten der Fördertrume sämtlicher Endlosförderer 30, 76, 78, 80, 82 in einer horizontalen Ebene liegen. Die jeweils benachbarten Umlenkrollen 38, 40 aufeinanderfolgender Endlosförderer 82, 30; 30, 76; 76, 78; 78, 80 liegen sich in einem geringen Abstand gegenüber, wie in Fig. 8 beispielhaft dargestellt.At the in Fig. 6 shown system 60 close to the endless conveyor 30 of the material support 16 successively further endless conveyor 76, 78, 80, whose training also corresponds substantially to the formation of the endless conveyor 30. The endless conveyors 76, 78, 80, like the endless conveyors 30 and 82, are mounted on supporting frames so that the upper sides of the conveying runs of all the endless conveyors 30, 76, 78, 80, 82 lie in a horizontal plane. The respective adjacent deflection rollers 38, 40 of successive endless conveyors 82, 30; 30, 76; 76, 78; 78, 80 are located at a small distance, as in Fig. 8 exemplified.

Die Endlosförderer 76, 80, 82 dienen dazu, die aus den Schneidestationen 18, 20 austretenden Zuschnitte 14 zu der stationären Aufwickelstation 66 zu transportieren, die an dem von den Schneidestationen 18, 20 abgewandten Stirnende des in Bewegungsrichtung letzten Endlosförderers 80 angeordnet ist. Durch die Verwendung mehrerer Endlosförderer 76, 78, 80 kann die Bewegungsgeschwindigkeit der Zuschnitte 14 in der Aufwickelstation 66 von der Bewegungsgeschwindigkeit der Bahn 12 und der Zuschnitte 14 in den Schneidestationen 18, 20 entkoppelt werden.The endless conveyors 76, 80, 82 serve to transport the blanks 14 emerging from the cutting stations 18, 20 to the stationary winding station 66, which is arranged at the front end of the last endless conveyor 80 which is remote from the cutting stations 18, 20. By using a plurality of endless conveyors 76, 78, 80, the speed of movement of the blanks 14 in the winding station 66 can be decoupled from the speed of movement of the web 12 and the blanks 14 in the cutting stations 18, 20.

Wie am besten in Fig. 9 und 10 dargestellt, besteht die Aufwickelstation 66 im Wesentlichen aus einem hinter der Umlenkrolle 38 des Endlosförderers 80 neben dem Endlosförderer 80 angeordneten aufrechten Gehäuse 84, einem im Inneren des Gehäuses 84 angeordneten Drehantrieb (nicht sichtbar), und zwei mittels des Drehantriebs antreibbaren Wickeldornen 86, 88, die frei auskragend über die zum Endlosförderer 80 benachbarte Seite des Gehäuses 84 überstehen. Die zylindrischen Wickeldorne 86, 88 sind in vertikaler Richtung im Abstand voneinander angeordnet, wobei einer 86 der beiden Wickeldorne 86, 88 etwas oberhalb und der andere 88 etwas unterhalb des Endlosförderers 80 angeordnet ist. Die beiden Wickeldorne 86, 88 weisen horizontale Drehachsen auf, die parallel zur Drehachse der benachbarten Umlenkrolle 38 des Endlosförderers 80 ausgerichtet sind.How best in FIGS. 9 and 10 2, the winding station 66 essentially consists of an upright housing 84 arranged behind the deflection roller 38 of the endless conveyor 80 next to the endless conveyor 80, a rotary drive arranged inside the housing 84 (not visible), and two winding mandrels 86, 88 drivable by means of the rotary drive. projecting freely over the adjacent to the endless conveyor 80 side of the housing 84. The cylindrical mandrels 86, 88 are spaced apart in the vertical direction, with one 86 of the two winding mandrels 86, 88 disposed slightly above and the other 88 slightly below the endless conveyor 80. The two winding mandrels 86, 88 have horizontal axes of rotation, which are aligned parallel to the axis of rotation of the adjacent deflection roller 38 of the endless conveyor 80.

Jeder der beiden Wickeldorne 86, 88 kann mit einer Mehrzahl von hohlzylindrischen Aufwickelhülsen 90 (nur zwei dargestellt) bestückt werden, die von den freien Enden der Wickeldorne 86, 88 her auf diese aufgeschoben und drehfest mit den Wickeldornen 86, 88 verbunden werden, zum Beispiel über eine formschlüssige Nut- und Feder-Verbindung. Zumindest in den Fällen, wo alle oder ein Teil der Längsseitenränder 51 der Zuschnitte 14 nicht parallel zu einer Längsmittelachse des Endlosförderers 80 ausgerichtet sind, werden die zum Aufwickeln von seitlich benachbarten Zuschnitten 14 dienenden Aufwickelhülsen 90 abwechselnd auf dem oberen und dem unteren Wickeldorn 86, bzw. 88 montiert, so dass die beiden Zuschnitte 14 trotz einer Überlappung des vorderen Stirnendes des einen Zuschnitts 14 mit dem hinteren Stirnende des anderen Zuschnitts 14 ungehindert auf die zugehörige Aufwickelhülse 90 aufgewickelt werden können. Aufgrund der Montage der Aufwickelhülse 90 benachbarter Zuschnitte 14 auf unterschiedlichen Wickeldornen 86, 88 kann die Länge der Aufwickelhülsen 90 jeweils etwas größer als die maximale Breite des auf die Aufwickelhülse 90 aufzuwickelnden Zuschnitts 14 sein.Each of the two winding mandrels 86, 88 can be equipped with a plurality of hollow-cylindrical winding sleeves 90 (only two shown) which are pushed onto the latter from the free ends of the winding mandrels 86, 88 and connected in a rotationally fixed manner to the winding mandrels 86, 88, for example via a positive tongue and groove connection. At least in the cases where all or part of the longitudinal side edges 51 of the blanks 14 are not aligned parallel to a longitudinal central axis of the endless conveyor 80, the take-up sleeves 90 serving for winding laterally adjacent blanks 14 are alternately supported on the upper and lower mandrels 86, respectively 88, so that the two blanks 14 can be unwound on the associated take-up sleeve 90 despite an overlap of the front end face of one blank 14 with the rear end face of the other blank 14. Due to the mounting of the take-up sleeve 90 of adjacent blanks 14 on different mandrels 86, 88, the length of the take-up sleeves 90 may each be slightly larger than the maximum width of the blank 14 to be wound onto the take-up sleeve 90.

Die Aufwickelhülsen 90 sind an ihrem äußeren Umfang mit flachen Klemmvorrichtungen 92 versehen, mit deren Hilfe ein vorderes Stirnende eines benachbarten, auf dem Endlosförderer 80 liegenden Zuschnitts 14 lösbar an einer der Aufwickelhülsen 90 befestigt werden kann. Nach dem Aufwickeln des Zuschnitts 14 kann die Aufwickelhülse 90 zusammen mit dem aufgewickelten Zuschnitt vom Wickeldorn 86, 88 abgezogen und bis zur Weiterverwendung des Zuschnitts 14 in einem Zwischenlager gelagert werden.The take-up sleeves 90 are provided at their outer periphery with flat clamping devices 92, by means of which a front end of an adjacent, lying on the endless conveyor 80 blank 14 can be releasably secured to one of the winding sleeves 90. After winding the blank 14th For example, the take-up sleeve 90, together with the wound blank, can be withdrawn from the winding mandrel 86, 88 and stored in an intermediate store until further use of the blank 14.

Die beiden Wickeldorne 86, 88 und die auf den Wickeldornen 86, 88 montierten Aufwickelhülsen 90 werden vom Drehantrieb der Aufwickelstation jeweils mit derselben Drehrichtung und Drehzahl angetrieben. Die Drehzahl wird von einer gemeinsamen Steuerung des Drehantriebs und des Endlosförderers 80 in Abhängigkeit vom zunehmenden Wickeldurchmesser der auf die Aufwickelhülsen 86, 88 aufgewickelten Zuschnitte 14 so eingestellt, dass die Umfangsgeschwindigkeit der äußersten Lage des Wickels der Bewegungsgeschwindigkeit des Endlosförderers 80 entspricht.The two winding mandrels 86, 88 and the winding mandrels 90, 88 mounted on the mandrels 86, 88 are driven by the rotary drive of the winding station in each case with the same direction of rotation and speed. The rotational speed is adjusted by a common control of the rotary drive and the endless conveyor 80 in response to the increasing winding diameter of the blanks 14 wound on the winding sleeves 86, 88 such that the peripheral speed of the outermost layer of the roll corresponds to the speed of movement of the endless conveyor 80.

Um die Notwendigkeit einer Messung des Wickeldurchmessers zu vermeiden, kann dieser aus der Anzahl der Umdrehungen der Wickeldorne 86, 88 nach Beginn des Aufwickelns und der Materialstärke des aufgewickelten Zuschnitts 14 ausreichend genau berechnet werden. Eventuell kann die Drehzahl der Wickeldorne 86, 88 dann so eingestellt werden, dass sie geringfügig größer als die auf der Basis dieser Berechnung ermittelte Drehzahl ist. Dies führt zwar zu einer kleinen Relativbewegung zwischen dem Endlosförderer 80 und den Zuschnitten 14, die dadurch in Richtung des Pfeils A in Fig. 6 langsam vom Endlosförderer 80 abgezogen werden. Jedoch kann auf diese Weise jeglicher Stau der Zuschnitte 14 vor der Aufwickelstation 66 sicher verhindert werden kann.In order to avoid the need to measure the winding diameter, this can be calculated sufficiently accurately from the number of revolutions of the mandrels 86, 88 after the beginning of the winding and the material thickness of the wound blank 14. Eventually, the rotational speed of the mandrels 86, 88 may then be adjusted to be slightly greater than the speed determined based on this calculation. Although this leads to a small relative movement between the endless conveyor 80 and the blanks 14, characterized in the direction of arrow A in Fig. 6 be slowly withdrawn from the endless conveyor 80. However, in this way, any jam of the blanks 14 before the winding station 66 can be safely prevented.

Wie am besten in Fig. 10 dargestellt, befindet sich unterhalb der Umlenkrolle 38 des Endlosförderers 80 eine Auffangwanne 94. Die Auffangwanne 94 dient dazu, eventuellen, zwischen den Zuschnitten 14 anfallenden Schnittabfall 96 aufzunehmen, der entweder infolge der Bewegung des Endlosförderers 80 direkt in die Auffangwanne 94 fällt, vom Bedienungspersonal in die Auffangwanne 94 gelenkt wird oder im Fall von kleineren Stücken in die Auffangwanne 94 geworfen werden kann.How best in Fig. 10 shown, is located below the guide roller 38 of the endless conveyor 80, a drip tray 94. The drip tray 94 serves to accommodate any, incurred between the blanks 14 cutting waste 96, the either due to the movement of the endless conveyor 80 falls directly into the drip tray 94, is directed by the operator into the drip tray 94 or can be thrown in the drip tray 94 in the case of smaller pieces.

Claims (15)

Vorrichtung zum Schneiden von Glas- oder Kohlefasertextilbahnen in vorzugsweise langgestreckte Zuschnitte, mit einer Materialauflage, mindestens einem ein Schneidmesser tragenden Messerkopf, der in einem konstantem Abstand von der Materialauflage in Richtung einer X-Achse und einer Y-Achse eines orthogonalen Koordinatensystems über eine auf der Materialauflage aufliegende Glas- oder Kohlefasertextilbahn bewegbar ist, sowie mindestens einem Niederhalter, der die Glas- oder Kohlefasertextilbahn in unmittelbarer Nachbarschaft des Schneidmessers gegen die Materialauflage anliegend festhält, dadurch gekennzeichnet, dass der Messerkopf (22) in Richtung der Y-Achse in Bezug zum Niederhalter (26) verfahrbar ist, wobei sich das Schneidmesser (24) am Niederhalter (26) entlang bewegt.Apparatus for cutting glass or carbon fiber textile webs into preferably elongated blanks, with a material support, at least one cutter head carrying a cutting blade, at a constant distance from the material support in the direction of an X-axis and a Y-axis of an orthogonal coordinate system over one on the Material support lying glass or carbon fiber fabric web is movable, and at least one downholder that holds the glass or carbon fiber fabric in the immediate vicinity of the cutting blade against the material support fitting, characterized in that the cutter head (22) in the direction of the Y-axis with respect to the hold-down (26) is movable, wherein the cutting blade (24) moves along the hold-down (26). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass sich das Schneidmesser (24) bei der Bewegung des Messerkopfs (22) in Bezug zum Niederhalter (26) entlang eines beiderseits vom Niederhalter (26) begrenzten Spalts (50) bewegt.Device according to claim 1, characterized in that during the movement of the cutter head (22) relative to the hold-down device (26) the cutting knife (24) moves along a gap (50) delimited on both sides by the hold-down device (26). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass der Niederhalter (26) mindestens ein auf der Glas- oder Kohlefasertextilbahn (12) abrollendes Andruckelement (44, 58) aufweist.Apparatus according to claim 1 or 2, characterized in that the holding-down device (26) has at least one pressure element (44, 58) rolling on the glass or carbon fiber textile web (12). Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass das Andruckelement ein über eine Mehrzahl von Rollen (46, 48) geführter Riemen (44) oder eine Rolle (58) ist.Apparatus according to claim 3, characterized in that the pressure element via a plurality of rollers (46, 48) guided belt (44) or a roller (58). Vorrichtung nach Anspruch 3 oder 4, dadurch gekennzeichnet, dass das Andruckelement (44, 58) einen Antrieb aufweist, der das Andruckelement (44, 58) mit einer Geschwindigkeit antreibt, die der Geschwindigkeit der Relativbewegung der Glas- oder Kohlefasertextilbahn (12) in Bezug zum Niederhalter (26) entspricht.Apparatus according to claim 3 or 4, characterized in that the pressure element (44, 58) has a drive which drives the pressure element (44, 58) at a speed which corresponds to the speed of relative movement of the glass or carbon fiber textile web (12) with respect to the hold-down (26). Vorrichtung nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass der Messerkopf (22) aktiv um eine zur X- und Y-Achse senkrechte Z-Achse drehbar ist.Device according to one of the preceding claims, characterized in that the cutter head (22) is actively rotatable about a Z axis perpendicular to the X and Y axis. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine Mehrzahl von einzeln angesteuerten Messerköpfen (22) und eine Mehrzahl von Niederhaltern (26), wobei die Messerköpfe (22) jeweils in einem Spalt (50) zwischen benachbarten Niederhaltern (26) in Richtung der Y-Achse verfahrbar sind.Device according to one of the preceding claims, characterized by a plurality of individually controlled cutter heads (22) and a plurality of hold-downs (26), wherein the cutter heads (22) in each case in a gap (50) between adjacent hold-downs (26) in the direction of Y -Axis are movable. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine stationäre Schneidestation (18), durch die sich die Glas- oder Kohlefasertextilbahn (12) in Richtung der X-Achse hindurch bewegt und gleichzeitig mit mehreren Schneidmessern (24) geschnitten wird.Device according to one of the preceding claims, characterized by a stationary cutting station (18) through which the glass or carbon fiber textile web (12) moves in the direction of the X-axis and is simultaneously cut with a plurality of cutting blades (24). Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, dass die Materialauflage (16) ein mit einer Auflagefläche für die Glas- oder Kohlefasertextilbahn (12) versehenes Transportelement (32, 54) umfasst, das sich zusammen mit der Glas- oder Kohlefasertextilbahn (12) durch die Schneidestation (18) hindurchbewegt, und dass sich ein auf der Glas- oder Kohlefasertextilbahn (12) abrollendes Andruckelement (44, 58) des Niederhalters (26) mit derselben Geschwindigkeit wie das Transportelement (32, 54) bewegt.Apparatus according to claim 8, characterized in that the material support (16) comprises a with a support surface for the glass or carbon fiber textile web (12) provided transport element (32, 54), which together with the glass or carbon fiber textile web (12) through the Cutting station (18) moves through, and that a rolling on the glass or carbon fiber textile web (12) pressure element (44, 58) of the blank holder (26) at the same speed as the transport element (32, 54) moves. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine mobile Schneidestation (20), die mindestens einen Messerkopf (22) und mindestens einen Niederhalter (26) umfasst und in Richtung der X-Achse über die Glas- oder Kohlefasertextilbahn (12) bewegbar ist.Device according to one of the preceding claims, characterized by a mobile cutting station (20) comprising at least one cutter head (22) and at least one hold-down (26) and in the direction of the X-axis over the glass or carbon fiber textile web (12) is movable. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, dass der Niederhalter (26) und der Messerkopf (22) mit getrennten Antrieben gemeinsam in Richtung der X-Achse verfahrbar sind.Apparatus according to claim 10, characterized in that the hold-down device (26) and the cutter head (22) are moved together with separate drives in the direction of the X-axis. Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine gemeinsame Steuereinheit zur Steuerung der Relativbewegungen des Messerkopfs (22) und des Niederhalters (26) in Bezug zur Glas- oder Kohlefasertextilbahn (12).Device according to one of the preceding claims, characterized by a common control unit for controlling the relative movements of the cutter head (22) and the blank holder (26) with respect to the glass or carbon fiber textile web (12). Vorrichtung nach einem der vorangehenden Ansprüche, gekennzeichnet durch eine Aufwickelstation (66) zum Aufwickeln der geschnittenen Zuschnitte (14), wobei die Aufwickelstation (66) mindestens zwei drehend antreibbare Wickeldorne (86, 88) umfasst.Device according to one of the preceding claims, characterized by a winding station (66) for winding the cut blanks (14), wherein the winding station (66) comprises at least two rotationally driven mandrels (86, 88). Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, dass die Drehgeschwindigkeit der drehend angetriebenen Wickeldorne (86, 88) allgemein mit der Bewegungsgeschwindigkeit eines zur Zufuhr der Zuschnitte (14) zur Aufwickelstation (66) dienenden Transportelements (80) synchronisiert wird.Apparatus according to claim 13, characterized in that the rotational speed of the rotationally driven mandrels (86, 88) is generally synchronized with the speed of movement of a for feeding the blanks (14) to the winding station (66) serving transport element (80). Verfahren zum Schneiden von Glas- oder Kohlefasertextilbahnen in vorzugsweise langgestreckte Zuschnitte, bei dem eine Glas- oder Kohlefasertextilbahn auf einer Materialauflage aufliegend zugeschnitten wird, wobei mindestens ein mit einem Schneidmesser bestückter Messerkopf in einem konstantem Abstand von der Materialauflage in Richtung einer X-Achse und einer Y-Achse eines orthogonalen Koordinatensystems gesteuert über die Glas- oder Kohlefasertextilbahn bewegt wird, die in unmittelbarer Nachbarschaft des Schneidmessers von mindestens einem Niederhalter gegen die Materialauflage angepresst wird, dadurch gekennzeichnet, dass der Messerkopf (22) in Richtung der Y-Achse in Bezug zum Niederhalter (26) verfahren wird, wobei sich das Schneidmesser (24) am Niederhalter (26) entlang bewegt.A process for cutting glass or carbon fiber textile webs into preferably elongated blanks, in which a glass or carbon fiber textile web is cut to rest on a material support, wherein at least one knife head equipped with a cutting blade is positioned at a constant distance from the material support in the direction controlled by an X-axis and a Y-axis of an orthogonal coordinate system on the glass or carbon fiber fabric web, which is pressed in the immediate vicinity of the cutting blade of at least one hold-down against the material support, characterized in that the cutter head (22) in the direction of Y-axis relative to the hold-down (26) is moved, wherein the cutting blade (24) moves along the hold-down (26).
EP20100004414 2009-05-02 2010-04-27 Device and method for cutting sheet-like or strip-like tissue or non-woven fabric material which allows air to penetrate Not-in-force EP2246160B1 (en)

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DE102012207643A1 (en) * 2012-05-08 2013-11-14 Bayerische Motoren Werke Aktiengesellschaft Cutting device, useful for processing fiber reinforced plastic components, comprises receptacle on which workpiece is provided, separating unit for mechanically processing workpiece, and fixing unit mechanically fixed to workpiece
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CN107675475A (en) * 2017-11-21 2018-02-09 山东天睿玻纤复合材料有限公司 A kind of glass fabric can adjust segmenting device
CN107724055A (en) * 2017-11-21 2018-02-23 山东天睿玻纤复合材料有限公司 A kind of glass fabric segmenting device
CN107675475B (en) * 2017-11-21 2023-09-22 山东天睿新材料科技股份公司 Adjustable segmenting device of glass fiber cloth
CN114351438A (en) * 2021-12-15 2022-04-15 安徽金九鼎复合材料有限公司 Device for accurately cutting glass fiber biaxial fabric

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