WO1993009283A1 - Textile web curve cutting device - Google Patents
Textile web curve cutting device Download PDFInfo
- Publication number
- WO1993009283A1 WO1993009283A1 PCT/DE1992/000911 DE9200911W WO9309283A1 WO 1993009283 A1 WO1993009283 A1 WO 1993009283A1 DE 9200911 W DE9200911 W DE 9200911W WO 9309283 A1 WO9309283 A1 WO 9309283A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cutting
- light
- textile web
- cutting head
- curve
- Prior art date
Links
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
- 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
- B26D5/30—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 having the cutting member controlled by scanning a record carrier
- B26D5/34—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 having the cutting member controlled by scanning a record carrier scanning being effected by a photosensitive device
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/16—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials specially adapted for cutting lace or embroidery
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
- D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
- D06H7/22—Severing by heat or by chemical agents
Definitions
- Curve cutting device for cutting a textile web
- the present invention relates to a curved cutting device for cutting a textile web with a cutting head carrying a cutting means, a drive device for moving the cutting head substantially perpendicular to a running direction of the textile web and with an optoelectronic detection device for detecting the relative position of the cutting head the textile web and for controlling the drive device in such a way that the desired curve is cut, according to the preamble of patent claim 1.
- the invention is concerned with the cutting of textile webs with a curved trailing edge.
- the invention is concerned with the automatic cutting out or burning out of curtains.
- Certain types of curtains have a curved lower edge that runs along a curtain pattern. This is typically made by hand by cutting out or burning out the curtains.
- an operator pulls a curtain by hand over a table with a glow cutting wire running perpendicular to the table in such a way that a so-called light gap in the pattern of the curtain when the curtain moves relative to the glow cutting wire is traversed by the glow cutting wire, which means that over webs extending the light gap are severed.
- This work is, of course, time consuming and tedious.
- a curve cutting device of the type mentioned at the outset for automatically cutting out or burning out curtains in which the cutting head by means of a drive device for moving the cutting head perpendicular to the running direction of the curtain in accordance with the detection signals of an optoelectronic Detector is moved back and forth.
- the detection device works with a broad light beam that is incident essentially perpendicular to the plane of the curtain and is reflected by a reflective curve cut marking applied to the curtain at the desired cutting location to a guide sensor (not described in more detail).
- a guide sensor is able to recognize the relative location of the cutting head with respect to the curve cut marking applied on the curtain and to track the cutting head.
- the present invention is therefore based on the object of creating a curved cutting device of the type mentioned at the outset, with which textile webs can be cut along a light gap worked into the textile web.
- the curve cutting device comes without a reflective marking applied to or woven into the textile web.
- the curve cutting device according to the invention determines the relative position of the cutting head with respect to a light gap in the weave pattern of the textile web or the curtain with at least three light barriers which are arranged such that the light beams generated or defined by them cut the plane of the textile web at at least three light points.
- At least two of the light points defined by at least one first and second light barrier lie on one side of the cutting point of the cutting means on the textile web in relation to its direction of travel, with at least one light point which is generated by the at least third light barrier on the other whose side of the cutting point of the cutting means lies on the textile web in relation to the running direction thereof.
- Such a light barrier arrangement enables the light barrier output signals to be linked in such a way that even peak patterns can be followed right into their corners and that on the other hand the unavoidable webs in the light gap of the textile web or the curtain do not lead to incorrect control.
- Figure 1 is a plan view of a cam cutting device according to the invention.
- FIG. 2 shows a perspective illustration of an embodiment of the cutting head of the curve cutting device shown in FIG. 1;
- FIG. 3 shows a plan view of the cutting head according to FIG. 2;
- Figure 4 is a sectional view of the cutting head in the plane of the textile web.
- the curve cutting device which is shown there in its top view and is designated in its entirety by the reference numeral 1, comprises a drive device 2 with an electric stepping motor 3 which is used to pivot a parallelogram guide 4 serves.
- the parallelogram guide comprises two parallel levers 5, 6, one of the levers 5 being articulated on the stepper motor 3 and the other lever 6 being pivotally mounted on a housing of the drive device 2.
- a stiffening arm 7 extends between the levers 5, 6 and is in turn rotatably supported at its ends with respect to the levers 5, 6.
- a guide arm 8 is attached, which can be moved back and forth in the direction of the arrow 9 in accordance with the rotary drive movement of the stepper motor 3.
- the guide arm 8 carries a cutting head 10, the configuration of which will be explained in more detail below with reference to FIGS. 2 to 6.
- the curve cutting device 1 is used to cut a textile web TB, which is typically a curtain web, along a so-called light gap, the textile web being divided into the end product 11 shown on the right in FIG. 1 and a waste strip 12.
- the textile web TB automatically into a (not shown) transport device the running direction LR is drawn over a table (not shown).
- the cutting head 10 comprises an upper cutting head block 13 and a lower cutting head block 14.
- the two cutting head blocks 13, 14 are connected to one another by a fastening element 15, which is bent twice in a manner to be explained in more detail in such a way that it extends in the Textile web plane extends close to a cutting point of the cutting means opposite the textile web and serves as a splitting wedge for splitting off the waste strip 12 of the textile web from the end product 11.
- the fastening element 15 is arranged on the cutting head blocks 13, 14 in sleeve-shaped guide devices 16, 17 and can be fixed relative to each other by means of grub screws 18, 19 at an adjustable distance of the cutting head blocks 13, 14.
- the cutting means is formed by a glow wire 20, which is secured and held in its position obliquely to the vertical by two glow wire holders 21, 22 arranged diametrically opposite one another on the cutting head blocks 13, 14 .
- the glow wire holders 21, 22 are designed as insulators.
- the glow wire 20 is designed as a resistance glow wire, to which a suitable cutting current is applied.
- the cutting head 10 can have a sufficiently strong laser beam source with which the textile web is thermally divided at the location of the light gap.
- the lower cutting head block 14 has two light-receiving elements 23, 24, which can be designed, for example, as phototransistors.
- the upper cutting head block 13 comprises three light emitting elements 26, 27, 28, which can be formed, for example, by LEDs.
- the light receiving elements 23, 24, 25 in one of the two cutting head blocks 13, 14 form together with the light transmitting elements 26, 27, 28 in the other of the two cutting head blocks in the exemplary embodiment shown here three light barriers 24, 26; 23, 27; 23, 28, the detection light beams of which are shown in broken lines in FIG. 2.
- FIG. 3 shows a plan view of the cutting head 10 shown in FIG. 2 to clarify the position of the glow wire 20, the light transmission elements 26, 27, 28 and the fastening element 15.
- the detection light rays of the light barriers are mutually inclined at an angle to the vertical on the plane of the textile web TB ordered that the mutual spacing of the light points at which the light rays cut the plane of the textile web TB is less than the mutual spacing of the adjacent light emitting elements 26, 27, 28 or the adjacent light receiving elements 23, 24.
- This is the reason possible to choose the mutual spacing of the light spots, which the light beams of the light barriers in the plane of the textile web define, as small as desired, despite the given geometry of the light receiving elements or light transmitting elements.
- the light transmission elements and light reception elements placed light barriers arranged such that in the case of three light points Ll, L2, L3 two of the light points Ll, L2 are on one side of the cutting point SP of the cutting means 20 on the textile web TB with respect to the running direction LR thereof, and that the third light point L3 on the other side of the cutting point SP of the cutting means 20 on the textile web TB is based on the direction of travel LR.
- the first-mentioned light points L1, L2 lie above the axis A, while the other light point L3 lies below the same lies.
- the distances a1, a2 of the two light points L1, L2, which lie on the same side of the axis A, are preferably selected to match one another.
- the distance a3 from the lower light point L3, which lies on the other side of the cutting point SP, is also chosen to be large in the embodiment shown here.
- the light barriers are arranged in such a way that the first light point L1 in front of the cutting point SP, the second light point L2 behind the cutting point SP and the third light point L3 lie at the level of the cutting point SP in the running direction LR of the textile web TB ⁇ gene comes.
- the fastening element 15 passes through the plane of the textile web TB in such a way that it is offset in the direction of travel of the textile web TB behind the cutting point SP and with respect to the axis A in the direction of the waste strip 12 by a fourth distance a4.
- the glow wire 20 is guided within the light gap LS, whereby the webs ST1, ST2, ST3, ST4, ST5, ST6, ST7, ST8, ... extending through the web correspond to the feed of the textile web TB to be cut.
- the drive device 2 moves the cutting head in the direction of the end product 11 of the textile web TB. If the third light barrier L3 is interrupted, the cutting head 10 is moved in the direction of the waste strip 12.
- this can be guided essentially controlled by the third light barrier along the edge of the light gap in that the drive device 2 moves the cutting head (10) in a first direction when the third light barrier is uninterrupted that the drive device 2 moves the cutting head 10 in a second direction opposite to the first direction when the third light barrier is interrupted, and that the drive device 2 moves the cutting head 10 in a first direction regardless of the interrupted state of the third light barrier when the first and the second light barrier are at the same time uninterrupted, so that the cutting head 10 travels back and forth along the edge of the light gap LS facing away from the waste strip 12 along the textile path.
- first, second and third light barriers L1, L2, L3 are simultaneously interrupted (dark) or at the same time uninterrupted (bright), this indicates an incorrect setting of the cutting head 10, whereupon the operation of the machine is interrupted by stopping the transport of the textile web .
- 5 and 6 show vertical sectional representations of a third or fourth embodiment of a cutting head in the transverse or longitudinal direction thereof. 2 correspond to the same or similar parts, so that it is not necessary to explain them again.
- the optoelectronic elements, which are sensitive per se, are brought to a sufficiently large distance from the cutting means, which can be, for example, a glow wire 20 or a laser beam, in order to prevent their heating or contamination.
- Both the light emitting elements 26 to 28 and the light receiving elements 23 to 25 are preferably clocked, as a result of which the influence of extraneous light, which is caused in particular by the glow wire 20, can be minimized.
- three light barriers are used. Although the number of three light barriers is sufficient, more than three light barriers can also be used.
- the light emitting element and the light receiving element of each light barrier are arranged on different sides of the plane defined by the textile web during operation.
- both transmitting and receiving element of each light barrier above the textile level are used.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP92922793A EP0610354A1 (en) | 1991-11-01 | 1992-10-30 | Textile web curve cutting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19914136069 DE4136069A1 (en) | 1991-11-01 | 1991-11-01 | CURVE CUTTING DEVICE FOR CUTTING A TEXTILE TRACK |
DEP4136069.9 | 1991-11-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1993009283A1 true WO1993009283A1 (en) | 1993-05-13 |
Family
ID=6443914
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE1992/000911 WO1993009283A1 (en) | 1991-11-01 | 1992-10-30 | Textile web curve cutting device |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0610354A1 (en) |
DE (1) | DE4136069A1 (en) |
WO (1) | WO1993009283A1 (en) |
Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE234304C (en) * | ||||
US2331337A (en) * | 1939-05-05 | 1943-10-12 | Arthur A Meyer | Method of and machine for reproducing pattern contours |
DE1063690B (en) * | 1952-03-25 | 1959-08-20 | Heinrich Georg Waldschmidt | Device for controlling guide machines by means of photoelectric devices |
GB993705A (en) * | 1962-12-31 | 1965-06-02 | Montague Burton Ltd | Cutting sheet materials |
US3215914A (en) * | 1962-08-28 | 1965-11-02 | William E Patterson | Fast and slow dual photo-cell bridge plural servo-motor control for duplicating machines |
FR1524088A (en) * | 1965-12-07 | 1968-05-10 | Vyzk Ustav Matemat Stroju | Automatic curve exploration device |
US3502882A (en) * | 1968-01-17 | 1970-03-24 | Geza Von Voros | Opto-graphical memory and digitalized control system for precision machining |
BE810753A (en) * | 1974-02-08 | 1974-05-29 | DEVICE FOR CUTTING MATERIALS | |
DE8907823U1 (en) * | 1989-06-27 | 1989-11-16 | Carl Schmale Gmbh & Co Kg, 4434 Ochtrup, De | |
DE9113625U1 (en) * | 1991-11-01 | 1992-03-05 | Biegger, Roland, 8854 Asbach-Baeumenheim, De |
-
1991
- 1991-11-01 DE DE19914136069 patent/DE4136069A1/en not_active Withdrawn
-
1992
- 1992-10-30 EP EP92922793A patent/EP0610354A1/en not_active Withdrawn
- 1992-10-30 WO PCT/DE1992/000911 patent/WO1993009283A1/en not_active Application Discontinuation
Patent Citations (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE234304C (en) * | ||||
US2331337A (en) * | 1939-05-05 | 1943-10-12 | Arthur A Meyer | Method of and machine for reproducing pattern contours |
DE1063690B (en) * | 1952-03-25 | 1959-08-20 | Heinrich Georg Waldschmidt | Device for controlling guide machines by means of photoelectric devices |
US3215914A (en) * | 1962-08-28 | 1965-11-02 | William E Patterson | Fast and slow dual photo-cell bridge plural servo-motor control for duplicating machines |
GB993705A (en) * | 1962-12-31 | 1965-06-02 | Montague Burton Ltd | Cutting sheet materials |
FR1524088A (en) * | 1965-12-07 | 1968-05-10 | Vyzk Ustav Matemat Stroju | Automatic curve exploration device |
US3502882A (en) * | 1968-01-17 | 1970-03-24 | Geza Von Voros | Opto-graphical memory and digitalized control system for precision machining |
BE810753A (en) * | 1974-02-08 | 1974-05-29 | DEVICE FOR CUTTING MATERIALS | |
DE8907823U1 (en) * | 1989-06-27 | 1989-11-16 | Carl Schmale Gmbh & Co Kg, 4434 Ochtrup, De | |
DE9113625U1 (en) * | 1991-11-01 | 1992-03-05 | Biegger, Roland, 8854 Asbach-Baeumenheim, De |
Also Published As
Publication number | Publication date |
---|---|
EP0610354A1 (en) | 1994-08-17 |
DE4136069A1 (en) | 1993-05-06 |
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