EP0550672B1 - Dispositif de balayage lateral de zones depourvues de poils de bandes de tissus, notamment du tissu eponge - Google Patents

Dispositif de balayage lateral de zones depourvues de poils de bandes de tissus, notamment du tissu eponge Download PDF

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Publication number
EP0550672B1
EP0550672B1 EP91918959A EP91918959A EP0550672B1 EP 0550672 B1 EP0550672 B1 EP 0550672B1 EP 91918959 A EP91918959 A EP 91918959A EP 91918959 A EP91918959 A EP 91918959A EP 0550672 B1 EP0550672 B1 EP 0550672B1
Authority
EP
European Patent Office
Prior art keywords
pile
frame
receivers
guide roller
transmitter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP91918959A
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German (de)
English (en)
Other versions
EP0550672A1 (fr
Inventor
Johannes Freermann
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.)
Carl Schmale GmbH and Co
Original Assignee
Carl Schmale GmbH and Co
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Filing date
Publication date
Application filed by Carl Schmale GmbH and Co filed Critical Carl Schmale GmbH and Co
Publication of EP0550672A1 publication Critical patent/EP0550672A1/fr
Application granted granted Critical
Publication of EP0550672B1 publication Critical patent/EP0550672B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H7/00—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials
    • D06H7/04—Apparatus or processes for cutting, or otherwise severing, specially adapted for the cutting, or otherwise severing, of textile materials longitudinally
    • D06H7/06—Removing selvedge edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/0204—Sensing transverse register of web
    • B65H23/0216—Sensing transverse register of web with an element utilising photoelectric effect

Definitions

  • the invention relates to a device for the lateral scanning of floreless zones on fabric webs, in particular terry cloth, on a textile machine, in which the fabric web runs around a deflection roller in the area of the scanning device and the floreless zone is scanned by means of photo detectors consisting of transmitter and receiver. which are attached to a frame, the scanning beams being directed tangentially to the deflection roller and thus to the fabric web at its deflection point.
  • Such a device is known from DE 89 07 659 U1. Although this known device generally works satisfactorily, it has been found that in the case of long deflection rollers, inaccuracies may arise as a result of the deflection thereof, which is due to the fact that the distance between the frame carrying the photodetectors compared to the deflection roller does not remain constant over its length.
  • the known device has one or more transmitters (light sources or the like), the rays of which run tangentially to the fabric web and also hit corresponding receivers (photocells or the like).
  • the transmitters and receivers are aligned in such a way that they are interrupted by the pile zone, but the beam path is not interrupted by the non-pile zone, which makes it very possible to determine the relative position of the continuous web and to align the fabric accordingly.
  • the object of the invention is to improve the detection accuracy of the device for laterally scanning the floreless zones on fabric webs.
  • the invention proposes that the frame is guided with rollers directly on the surface of the deflection roller, the deflection roller is expediently fixed and has a polished surface, and that the transmitter and receiver of the photodetector are at a distance tangential to the deflection roller plate attached to the frame are arranged.
  • This configuration ensures that the floreless zone or the flor zone is precisely detected even when the deflection rollers bend, since the distance between the photodetectors is directly oriented on the surface of the deflection roller itself. As a result, deflections or other inaccuracies in the deflection roller cannot adversely affect the correct functioning of the photodetectors.
  • the roles of the frame carrying the transmitters and receivers run directly on the deflection roller and consequently always depend on their current position, so that a very precise result can be achieved.
  • a preferred embodiment is characterized in that the frame is suspended from a spring plate directed at a distance tangential to the deflection roller in such a way that the rollers bear against the deflection roller under prestress.
  • the plate is screwed to the frame by means of screws guided in elongated holes in order to be able to adjust its distance to the deflection roller in the direction of the arrow.
  • the plate can also be adjusted transversely to the direction of the arrow by means of screws guided in elongated holes.
  • two transmitters are arranged on the frame, which face three receivers, the transmitter with the receivers for scanning the longitudinal pile edge of the floreless zone and the.
  • Transmitter with the receiver serves to scan the edges of the floreless zone across the fabric web.
  • the transmitter emits a fan-shaped signal which, depending on the position of the pile edge of the floreless zone along the fabric web, hits the receiver, the receiver together or none of the receivers.
  • the three possible signals can be evaluated in a control which acts on an actuator of the textile machine.
  • FIG. 1 shows a section through the deflection roller with the one placed on the deflection roller device according to the invention.
  • One recognizes the frame 1, which surrounds the deflection roller 3 in a U-shape.
  • the deflection roller 3 is expediently fixed and provided with a polished surface.
  • a plurality of rollers 2 are rotatably mounted on the frame 1 and run directly on the outer surface of the deflection roller 3. In the example shown, there are a total of six rollers 2, of which two pairs of rollers 2 are located at the ends of the frame 1 and one pair of rollers 2 at the front and rear approximately in the middle of the frame 1.
  • a plate 9 is attached to the frame 1, which serves as a carrier for the photodetectors.
  • These consist of transmitters and receivers, namely one transmitter 7 and 8 on one side of the plate 9 and three receivers 4, 5, 6 on the other side of the plate 9. They are set up so that the light beam emanating between them touches the surface of the floreless zone of the fabric web 19 as a tangent.
  • the plate 9 is connected to the frame 1 by means of screws 11 guided in elongated holes 10. Furthermore, the plate 9 can also be adjusted transversely to the direction of the arrow 14 by means of screws 13 guided in elongated holes 12.
  • FIG. 1 shows a plan view of the device according to FIG. 1.
  • the frame 1 can be moved with rollers 2 on the deflection roller 3. It can be seen that the frame 1 is provided at both ends with the rollers 2, of which two rollers are not visible.
  • the plate 9 is fastened to one end of the frame 1 in the manner described above (12, 13).
  • the two transmitters 7, 8 on the one hand and three receivers 4, 5, 6 on the other hand are arranged on the plate 9.
  • the transmitter 8 cooperates with the receivers 5, 6 for scanning the longitudinal flank edge of the fabric web 19, while the transmitter 7 cooperates with the receiver 4 for scanning the edges of a floreless zone transverse to the length of the fabric web.
  • the transmitter 8 can emit a fan-shaped signal which, depending on the position of the pile edge along the fabric web 19, hits the receiver 5 alone, the receiver 5,6 together or neither of the two receivers 5,6.
  • Each of the three possible signals is evaluated in a controller which is provided in the textile machine and acts on an actuator of the machine.
  • Figure 3 shows another solution to the problem.
  • the frame 1 is directed at a tangential to the deflection roller 3 at a distance
  • Spring plate 16 suspended in such a way that the rollers 2 bear against the deflection roller 3 under pretension.
  • the connection between the spring plate 16 and the frame 1 is made by a bearing piece 15, in which the frame 1 is rotatably mounted about a shaft 18 in the direction of the arrow 20.
  • the four rollers 2 are arranged in pairs with perpendicular running surfaces.
  • the spring plate 16 is connected to a machine part 17.
  • FIG. 4 shows a top view of the embodiment according to FIG. 3. It provides information about the arrangement of the rollers 2 and the position of the spring plate 16.
  • the plate 9 which, as described above, serves as a support for the photodetectors .
  • air nozzles can be accommodated, which are supplied by a compressed air source, blow blown air against the pile edge, so that any folded pile is erected against the pile root.
  • the blowing nozzles can be mounted in the frame 1 itself or in a separate air block.
  • the device for scanning the floreless lateral longitudinal edge edges of fabric webs is described in more detail below with regard to its function.
  • a fabric web runs through the device in the longitudinal direction, the two longitudinal edge edges of the fabric web having floreless zones.
  • the fabric web can have transverse floreless zones (for example in the case of terry towels or the like).
  • the device serves to control the positional alignment of the fabric web on the processing machines. Proper control of the path of movement of the fabric web is required so that it can be properly hemmed or other machining operations can be carried out mechanically.
  • the scanning devices which consist of the transmitter and the receivers, are provided on both sides of the fabric web for scanning the longitudinal edge edges. The possible locations are as follows:
  • a first position is reached when the system consisting of the transmitter 8 and the receivers 5 + 6 is oriented so that the beam coming from the transmitter 8 to the receiver 6 indicates that there is no cloth web, whereas the beam emanating from the transmitter 8 and directed towards the receiver 5 indicates that here is arranged between the floreless zone.
  • This position is the normal and desired working position. If the fabric moves so that both emanating from the transmitter 8 If beams reach the receivers 5 and 6 via the floreless zone, a signal for the transverse displacement of the fabric web is derived therefrom, so that it is automatically mechanically displaced so far that one of the two beams, namely the beam between transmitter 8 and receiver 5 runs over the floreless zone and the other beam runs between transmitter 8 and receiver 6 next to the floreless zone.
  • a position is also possible in which both beams emanating from the transmitter 8 are arranged next to the floreless zone outside the cloth web. At this position, the fabric is controlled so that it is moved until the target position is reached again.
  • edge edge is scanned in such a way that the beam coming from the transmitter 8 runs to the receiver 5 through the pile zone, while the other beam runs from the transmitter 8 to the receiver 6 through the flowerless zone.
  • This can in turn be a target position.
  • both beams emanating from the transmitter either run in the area of the floreless zone or through the pile zone of the fabric web.
  • a control of the machine is started by the receiving device, by means of which the fabric web is operated is shifted in the corresponding direction to reach the target position again.
  • the further transmission and reception system (transmitter 7 and receiver 4) is provided.
  • the beam coming from the transmitter 7 does not reach the receiver 4, so that no signal is produced.
  • a transverse floreless zone reaches the beam path between the transmitter 7 and the receiver 4, the signal emanating from the transmitter 7 comes to the receiver 4, which then switches off the transmitting and receiving device 8 or 5, 6 until the transverse zone has passed, whereupon then turn the transceiver 8, 5, 6 is turned on.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Woven Fabrics (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Claims (12)

  1. Dispositif pour explorer latéralement les zones sans poils de bandes de tissu, et en particulier de produits en tissu éponge, dans une machine textile, dans lequel la bande de tissu passe autour d'un rouleau de déviation dans la région du dispositif d'exploration et l'exploration de la zones sans poils a lieu au moyen de détecteurs photoélectriques constitués par des émetteurs et par des récepteurs qui sont fixés sur un châssis, les rayons lumineux d'exploration étant dirigés tangentiellement par rapport au rouleau de déviation, et donc par rapport à la bande de tissu à l'endroit où elle est déviée, caractérisé par le fait que le châssis (1) est guidé directement sur la surface du rouleau de déviation (3) au moyen de galets (2), le rouleau de déviation (3) étant avantageusement fixe et présentant une surface polie, et par le fait que les émetteurs (7, 8) et les récepteurs (4 à 6) du détecteur photoélectrique sont disposés sur une plaque (9) qui est fixée sur le châssis (1), tangentiellement par rapport au rouleau de déviation (3) et à distance de celui-ci.
  2. Dispositif selon la revendication 1, caractérisé par le fait que le châssis (1) est suspendu à une tôle élastique (16) qui est dirigée tangentiellement par rapport au rouleau de déviation (3) et à distance de celui-ci, et ce, d'une manière telle que les galets (2) portent sur le rouleau de déviation (3) avec une contrainte préalable.
  3. Dispositif selon la revendication 1, caractérisé par le fait que la plaque (9) est vissée sur le châssis (1) au moyen de vis (11) qui sont guidées dans des trous allongés (10), afin de pouvoir régler sa distance par rapport au rouleau de déviation (3) dans la direction de la flèche (14).
  4. Dispositif selon la revendication 1 ou 3, caractérisé par le fait que la plaque (9) est aussi réglable perpendiculairement à la direction de la flèche (14) au moyen de vis (13) guidées dans des trous allongés (12).
  5. Dispositif selon la revendication 2, caractérisé par une pièce formant palier (15) dans laquelle le châssis (1) est monté en pouvant tourner autour d'un arbre (18) dans la direction de la flèche (20).
  6. Dispositif selon la revendication 2 ou 5, caractérisé par le fait que la tôle élastique (16) est fixée à une partie (17) de la machine.
  7. Dispositif selon l'une des revendications 1 à 6, caractérisé par le fait que sont disposées dans le châssis (1) des buses à air qui sont alimentées par une source d'air comprimé et qui sont dirigées vers le bord de la zone pourvue de poils de manière à aligner les poils sur leurs racines.
  8. Dispositif selon l'une des revendications 1 à 7, caractérisé par le fait que sont disposés sur le châssis (1) deux émetteurs (7, 8) en face desquels sont placés trois récepteurs (4 à 6), l'émetteur (8) servant à explorer, en coopération avec les récepteurs (5, 6), le bord pourvu de poils en défilement longitudinal de la zone sans poils, et l'émetteur (7) servant, en coopération avec le récepteur (4), à explorer les bords de la zone sans poils perpendiculairement à la bande de tissu (19).
  9. Dispositif selon la revendication 8, caractérisé par le fait que l'émetteur (8) fournit un signal en forme d'éventail qui, selon la position des bords pourvus de poils de la zone sans poils le long de la bande de tissu (19), rencontre le récepteur (5), les récepteurs (5 et 6) en même temps ou aucun des récepteurs (5, 6).
  10. Dispositif selon la revendication 9, caractérisé par le fait que les trois signaux possibles peuvent être exploités dans un dispositif de commande qui agit sur un organe d'asservissement de la machine textile.
  11. Dispositif selon l'une des revendications 1 à 10, caractérisé par le fait que l'exploration des bords pourvus de poils dans la direction longitudinale est arrêtée lorsque l'émetteur (7) et le récepteur (4) sont en contact optique entre eux dans la région de la zone sans poils qui s'étend transversalement.
  12. Dispositif selon l'une des revendications 1 à 11, caractérisé par le fait que l'on utilise à la place des galets (2) des billes qui sont montées de manière à être mobiles.
EP91918959A 1990-12-01 1991-11-02 Dispositif de balayage lateral de zones depourvues de poils de bandes de tissus, notamment du tissu eponge Expired - Lifetime EP0550672B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9016342U DE9016342U1 (de) 1990-12-01 1990-12-01 Vorrichtung zum seitlichen Abtasten von florlosen Zonen an Gewebebahnen, insbesondere Frotteeware
DE9016342U 1990-12-01
PCT/DE1991/000864 WO1992009738A1 (fr) 1990-12-01 1991-11-02 Dispositif de balayage lateral de zones depourvues de poils de bandes de tissus, notamment du tissu eponge

Publications (2)

Publication Number Publication Date
EP0550672A1 EP0550672A1 (fr) 1993-07-14
EP0550672B1 true EP0550672B1 (fr) 1994-07-13

Family

ID=6859886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91918959A Expired - Lifetime EP0550672B1 (fr) 1990-12-01 1991-11-02 Dispositif de balayage lateral de zones depourvues de poils de bandes de tissus, notamment du tissu eponge

Country Status (9)

Country Link
US (1) US5282298A (fr)
EP (1) EP0550672B1 (fr)
AT (1) ATE108499T1 (fr)
AU (1) AU8769491A (fr)
BR (1) BR9107140A (fr)
DE (2) DE9016342U1 (fr)
ES (1) ES2060410T3 (fr)
PT (1) PT99652B (fr)
WO (1) WO1992009738A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6085555A (en) * 1998-10-29 2000-07-11 China Textile Institute Palm-top fabric leading edge detector
CN111366124B (zh) * 2020-05-11 2021-08-13 深圳市卓立勘测工程有限公司 一种地下管线形变度测量系统及测量方法
CN114275771B (zh) * 2021-12-06 2023-06-16 喆烯新材(北京)科技有限公司 一种用于激光诱导石墨烯的扫描装置

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2092142A (en) * 1934-02-12 1937-09-07 Schuz Hans Automatic machine tool control
US2747665A (en) * 1954-02-03 1956-05-29 Us Rubber Co Edge trimmer for advancing sheet material
US2972794A (en) * 1958-05-23 1961-02-28 Cranston Print Works Co Weft straightener
US3179800A (en) * 1960-10-28 1965-04-20 United States Steel Corp Apparatus for measuring thickness variation across the width of a moving strip
US3417645A (en) * 1965-07-06 1968-12-24 Richard A Burnette Apparatus for sensing and cutting along the edge of a thickened portion of a traveling web
DE2059637C3 (de) * 1970-12-04 1979-03-22 Erhardt & Leimer Kg, 8900 Augsburg Vorrichtung zum kontinuierlichen Abtasten der Florkante eines aus einem Grundgewebe mit aufgebautem Flor bzw. getuftetem Nadelfilz bestehenden Material
US3758924A (en) * 1972-11-30 1973-09-18 Riggs & Lombard Inc Apparatus for shearing patterns on pile fabrics
US4025025A (en) * 1974-05-30 1977-05-24 Agfa-Gevaert, A.G. Apparatus for scanning a marked web
US4303189A (en) * 1979-12-27 1981-12-01 Tex-Fab, Inc. System and method for aligning fabric
US4624036A (en) * 1982-03-15 1986-11-25 Samcoe Holding Corporation Automatic orientation guide for tubular knitted fabric
US4662757A (en) * 1984-05-18 1987-05-05 Rca Corporation Motion tracking system and method
DE8907659U1 (de) * 1989-06-22 1989-08-10 Carl Schmale GmbH & Co KG, 4434 Ochtrup Vorrichtung zum seitlichen Abtasten von florlosen Zonen an Tuchbahnen, insbesondere Frotteeware

Also Published As

Publication number Publication date
DE59102199D1 (de) 1994-08-18
ES2060410T3 (es) 1994-11-16
PT99652B (pt) 1999-02-26
PT99652A (pt) 1993-12-31
WO1992009738A1 (fr) 1992-06-11
ATE108499T1 (de) 1994-07-15
EP0550672A1 (fr) 1993-07-14
US5282298A (en) 1994-02-01
AU8769491A (en) 1992-06-25
BR9107140A (pt) 1993-11-03
DE9016342U1 (de) 1991-02-21

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