EP3066244A1 - Method and device for measuring the fabric tension in a weaving machine - Google Patents
Method and device for measuring the fabric tension in a weaving machineInfo
- Publication number
- EP3066244A1 EP3066244A1 EP14811778.1A EP14811778A EP3066244A1 EP 3066244 A1 EP3066244 A1 EP 3066244A1 EP 14811778 A EP14811778 A EP 14811778A EP 3066244 A1 EP3066244 A1 EP 3066244A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- deflection
- shaft
- deflection shaft
- supports
- lever
- 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.)
- Withdrawn
Links
Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/18—Devices for indicating warp tension
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
- D03D49/00—Details or constructional features not specially adapted for looms of a particular type
- D03D49/04—Control of the tension in warp or cloth
- D03D49/22—Back rests; Lease rods; Brest beams
Definitions
- the present invention relates to measuring a fabric tension in a loom.
- a device of the type mentioned shows, for example, EP 0 590 725 B1. There it is described that a deflection or a deflection beam is supported at its outer ends and that the deflection of the deflection shaft is measured under the tension of the tissue with a load cell or a sensor approximately in the middle between the supports.
- DE 3905881 A1 also shows a device for measuring the warp tension with the aid of a sensor which detects the fabric tension.
- the sensor is designed as a measuring beam, which is integrated in a deflection shaft.
- warp tension can be very different in a ratio of 1: 400.
- the object of the present invention is to provide a method by which tissue stresses can be measured in a very wide range of voltages without requiring the exchange of sensors. Description of the invention
- the object is achieved by a method according to independent claim 1 and by a weaving machine according to independent claim 7.
- the fabric is deflected in the weaving machine by a deflection shaft or a deflection. Due to the deflection, a bending force is applied to the deflection shaft through the tissue.
- the deflection path of the deflection shaft is measured by a sensor which is mounted in a region between two supports of the deflection shaft on the loom.
- the deflection shaft is connected via the two supports and detachable connection means with a machine frame of the loom.
- the sensor forwards its measuring signals, for example, to a controller of the weaving machine.
- the invention is characterized in that the distance between the two supports of the deflection shaft is reduced or can be reduced with larger tissue tensions to be measured, and that the distance between the two supports is smaller
- the deflection shaft is particularly preferably supported at its two outer ends by means of two stationary outer supports, wherein the two said, variable in distance supports are arranged between the two outer supports.
- the connecting means between the two (inner) supports and the weaving machine are most conveniently loosened and fastened again. This can be done by the operator of the loom or by automatically operating adjustment, clamping and / or displacement devices (for example, with spindle motors). By different distances between the clamping points of the
- an inductive sensor is used to measure the deflection.
- all other distance measuring sensors can be used. The measuring signal is thereby removed directly from the deflection shaft or from a transmission element connected to the deflection shaft.
- a strain gauge can be used, which is arranged for example on an elastically deformable transmission element which is in communication with the deflection shaft.
- an input device is provided with which the operator can enter information about the current column distance in the control of the loom, so that the controller in conjunction with the
- Sensor sensitivity can identify a measuring range. Also conceivable is the direct input of the measuring range, which results from a certain column distance. To support the operator input, it makes sense if markings are attached to the weaving machine, from which the operator can take information about the current column spacing or about the resulting measuring range from the column distance. It is advantageous if at least one measuring element is provided which measures the actual column spacing or at least one of the two column positions and the measured values are passed on electrically to the control of the loom. If only one of the two support positions relative to a symmetry line between both supports, the actual column distance can be determined.
- the first lever end of the transmission lever is with a
- the first end of the lever can be rotatable or elastic
- Transmission lever to be connected to the machine frame.
- the transmission lever is arranged between the deflection shaft and the sensor such that the second end of the transmission lever with respect to the distance between
- Lever end is closer to the deflection shaft.
- Transmission lever consists of a connection through which the deflection path of the deflection shaft is transmitted to the transmission lever.
- This connection can, for example, a frictional connection in the form of a support of
- Deflection shaft results in a lever transmission that transmits small deflection paths on the deflection shaft in the vicinity of the first lever end in larger deflection or measuring paths on the sensor in the vicinity of the second lever end.
- Figure 1 Schematic representation of a loom with a device for carrying out the method according to the invention, view B-B;
- Figure 2 view A-A of the loom of Figure 1, but without tissue;
- FIG. 3 Enlarged detail from FIG. 1.
- FIGS. 1 to 3 will be described together below.
- warp threads 1 1 are deducted, which are guided by shedding elements 12 such that the warp threads 1 1 form a shed into which a weft thread is entered.
- the weft is struck by a reed 10 at a fabric edge or binding point.
- the fabric 1 is fed via a fabric table 15 and a deflection shaft 2 to a drawing-in roller 13.
- the deflection shaft 2 can also have a thread or oblique grooves, through which the fabric 1 is spread in the weft direction.
- the deflecting shaft 2 is mounted in the machine frame 9 of the weaving machine via two inner, mutually adjustable supports 4.1, 4.2 and two stationary outer supports 14.1, 14.2 and a guide profile 18.
- the drawing-in roller 13 and the warp beam are connected to drives, not shown. These drives are controlled by the controller 5 of the weaving machine such that the warp threads 1 1 and connected to the warp threads 1 1 1 fabric are stretched in the warp direction.
- the size of the fabric tension is a measure of the size of the warp tension or the warp tension on the
- Deflection shaft 2 in a region between the two supports 4.1, 4.2 creates a bending force, which causes an elastic deflection of the deflection shaft 2.
- the deflection shaft 2 is connected to a transmission lever 8 in connection, the Deflection path or the size of the elastic deformation of the deflection shaft 2 increases.
- the transmission lever 8 consists of a flexible sheet metal, which is clamped at its first end to the machine frame 9. The sheet has a bent portion which acts like a spiral spring.
- the transmission lever 8 is elastic at its first end with the
- Machine frame 9 connected.
- the second end of the sheet is free to move, at least in the direction of the deflection path of the deflection 2.
- Transmission lever 8 is arranged so that a deflection of the deflection shaft 2 leads to a displacement of the transmission lever 8. At the freely movable, second end of the transmission lever 8 and at the point at which the
- Deflection shaft 2 acts on the transmission lever 8, resulting in a
- the already mentioned sensor 3 is arranged, which detects the measuring path D of the free end of the lever in the direction of deflection of the deflection shaft 2. Due to the leverage of the transmission lever 8, it is also possible to use those sensors 3 which emit a measuring signal only with larger measuring paths D - in the present example this is an inductive displacement transducer. This is an element that costs less than, for example, a high sensitivity strain gauge that could be mounted directly on the underside of the diverter shaft 2 to measure the very small strains due to deflection that occur there. The measured Deflection is a measure of the fabric tension or the warp tension of the currently deflected over the guide shaft 2 fabric 1 in the loom.
- the actually occurring deflection of the deflection shaft 2 is also dependent on the distance A of the supports 4.1, 4.2, between which the deflection is measured.
- the supports 4.1, 4.2 of the deflection shaft 2 are in the present example on
- Screws 16 releasably connected to a cross-beam of the machine frame 9.
- Crossbar can be increased or decreased by the operator of the distance A between the supports 4.1, 4.2.
- a measuring scale is mounted on the guide profile.
- This measuring scale contains a plurality of markings 6, which are in each case matched by the operator of the loom with an edge of the respective supports 4.1, 4.2
- the markers 6 can also be designed so that the measuring range - i. Maximum value and minimum value of the tissue tension - resulting from the
- set column distance A results is directly readable.
- the operator inputs the set measuring range via the input device 5a directly into the controller 5 of the loom.
- FIGS. 1-3 show a light transmitter as measuring element 7 by way of example , Of the Light transmitter 7 is attached to the main body of the sensor 3 for the deflection between the two supports 4.1, 4.2 of the deflection shaft 2.
- the measuring element 7 measures the distance to the support 4.1.
- This support 4.1 is purposeful a reflector surface for the light beam of the light emitter 7 available.
- the other support 4.2 is adjusted symmetrically by the operator to the sensor 3 on the guide profile.
- the measured distance of a support 4.1 to the sensor 3 thus corresponds to half the distance A between the two supports.
- the measured distance is electrically passed on to the weaving machine control 5 and converted there into a measuring range for the fabric tension.
- the deflection shaft 2 is fixed in the present example with the aid of jaws and clamping screws 17 to the supports 4.1, 4.2. A change in the column spacing A is possible without the position of the deflection shaft 2 being changed relative to the sensor 3 or relative to the weaving machine.
- the sensor 3 and the transmission lever 8 are also mounted on the guide profile 18 of the machine frame 9.
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Looms (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201310222679 DE102013222679A1 (en) | 2013-11-07 | 2013-11-07 | Method of measuring tissue tension in a loom |
PCT/EP2014/073946 WO2015067702A1 (en) | 2013-11-07 | 2014-11-06 | Method and device for measuring the fabric tension in a weaving machine |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3066244A1 true EP3066244A1 (en) | 2016-09-14 |
Family
ID=52023461
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14811778.1A Withdrawn EP3066244A1 (en) | 2013-11-07 | 2014-11-06 | Method and device for measuring the fabric tension in a weaving machine |
Country Status (6)
Country | Link |
---|---|
US (1) | US9725834B2 (en) |
EP (1) | EP3066244A1 (en) |
JP (1) | JP6181302B2 (en) |
CN (1) | CN105705694B (en) |
DE (1) | DE102013222679A1 (en) |
WO (1) | WO2015067702A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI11690U1 (en) * | 2017-05-05 | 2017-06-09 | Valmet Technologies Oy | Measurement block for a fiber web machine |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3526252A (en) * | 1968-09-04 | 1970-09-01 | Hindle Son & Co Ltd | Loom warp letting-off mechanism |
CH556416A (en) * | 1972-09-29 | 1974-11-29 | Sulzer Ag | CHAIN RELEASE DEVICE. |
CH657392A5 (en) * | 1982-07-13 | 1986-08-29 | Zellweger Uster Ag | METHOD AND DEVICE FOR MEASURING THE TENSION ON TEXTILE SURFACES ON TEXTILE MACHINES, IN PARTICULAR WEAVING MACHINES. |
CH667294A5 (en) * | 1985-02-14 | 1988-09-30 | Saurer Diederichs Sa | STRING ARRANGEMENT ON A WEAVING MACHINE. |
JPH01250439A (en) * | 1988-03-29 | 1989-10-05 | Nissan Motor Co Ltd | Rolling and delivering method in loom |
DE3905881C2 (en) * | 1989-02-25 | 1999-08-19 | Dornier Gmbh Lindauer | Device for measuring warp tension in a weaving machine |
IT1256154B (en) * | 1992-10-01 | 1995-11-29 | Luciano Corain | PERFECTED DEVICE FOR AUTOMATIC ADJUSTMENT OF THE VOLTAGE OF THE ORDER WIRES IN A TEXTILE FRAME |
IT1273785B (en) * | 1994-02-18 | 1997-07-10 | Nuovo Pignone Spa | DEVICE PERFECTED TO MEASURE THE ORDER VOLTAGE IN A TEXTILE FRAME |
DE19530333C2 (en) * | 1995-08-17 | 1997-08-28 | Univ Eberhard Karls | Fungal cell DNA amplification and method for detecting fungal cells in clinical material |
DE10004376A1 (en) * | 2000-02-02 | 2001-08-23 | Dornier Gmbh Lindauer | Process for producing a leno base fabric on weaving machines |
DE50205747D1 (en) * | 2001-11-16 | 2006-04-13 | Sultex Ag Rueti | Measuring device for measuring the tissue tension in a loom and loom with such a measuring device |
DE10218059A1 (en) * | 2002-04-23 | 2003-11-13 | Dornier Gmbh Lindauer | Device and method for regulating the thread tension of a thread in textile processing machines |
CN201186987Y (en) * | 2008-04-28 | 2009-01-28 | 王占洪 | Warp knitting fabric coiling apparatus |
DE102011112012A1 (en) * | 2011-08-30 | 2013-02-28 | Oerlikon Textile Gmbh & Co. Kg | Yarn tension sensor |
JP5778544B2 (en) * | 2011-10-19 | 2015-09-16 | 津田駒工業株式会社 | Loom tension detector |
-
2013
- 2013-11-07 DE DE201310222679 patent/DE102013222679A1/en not_active Ceased
-
2014
- 2014-11-06 US US15/032,880 patent/US9725834B2/en not_active Expired - Fee Related
- 2014-11-06 JP JP2016528172A patent/JP6181302B2/en not_active Expired - Fee Related
- 2014-11-06 CN CN201480060981.7A patent/CN105705694B/en not_active Expired - Fee Related
- 2014-11-06 EP EP14811778.1A patent/EP3066244A1/en not_active Withdrawn
- 2014-11-06 WO PCT/EP2014/073946 patent/WO2015067702A1/en active Application Filing
Non-Patent Citations (2)
Title |
---|
None * |
See also references of WO2015067702A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN105705694B (en) | 2017-06-06 |
US20160281278A1 (en) | 2016-09-29 |
US9725834B2 (en) | 2017-08-08 |
CN105705694A (en) | 2016-06-22 |
WO2015067702A1 (en) | 2015-05-14 |
JP6181302B2 (en) | 2017-08-16 |
JP2016540133A (en) | 2016-12-22 |
DE102013222679A1 (en) | 2015-05-07 |
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