CN100465603C - Tensometer - Google Patents
Tensometer Download PDFInfo
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- CN100465603C CN100465603C CNB2003801070228A CN200380107022A CN100465603C CN 100465603 C CN100465603 C CN 100465603C CN B2003801070228 A CNB2003801070228 A CN B2003801070228A CN 200380107022 A CN200380107022 A CN 200380107022A CN 100465603 C CN100465603 C CN 100465603C
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- light source
- torsion
- torsion element
- tensiometer
- receiver
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- 239000000463 material Substances 0.000 claims abstract description 40
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 238000005452 bending Methods 0.000 claims description 12
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- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000005259 measurement Methods 0.000 abstract description 8
- 238000001514 detection method Methods 0.000 abstract 1
- 230000005693 optoelectronics Effects 0.000 abstract 1
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- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
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- 229910000639 Spring steel Inorganic materials 0.000 description 1
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- 210000000056 organ Anatomy 0.000 description 1
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- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/04—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
- G01L5/10—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means
- G01L5/105—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands using electrical means using electro-optical means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Optical Transform (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention relates to a tensometer (T) for measuring the tension of filiform materials. The inventive tensometer comprises a thread arm (D) connected to an incorporated torsion element (F) and an optoelectronic detection device (A) for a large scale measurement of the torsion of the torsion element (F) on an optical trajectory with the aid of a light position sensor (P) when the threads are tightened.
Description
Technical field
The present invention relates to be used to measure the power tensiometer on the filamentary material, it comprises the torsion element that an at least one end is fixed, one link to each other with torsion element and and the contacted thread arm of filamentary material, the pulling force that relies on filamentary material that reverses around the torsion element of torsion shaft, and comprise that a photoelectricity reverses pick-up unit, this photoelectricity reverses pick-up unit and comprises a receiver and a light source that has reference field, and the light of light source is mapped to the reference field of receiver.
Background technology
Tensiometer is applied to warp processing industry or textile technology field.Measuring tension force, is in order to obtain the working condition of braider, in the scope that on-line tension bears, to regulate machine, allowing warp inweave in the machine.
Among the patent EP 0 288 784 tensiometer is defined, tensiometer frees in and out warp in weaving loom.Its twisting resistance turns to from bobbin by line, and at this moment, bobbin is shifted automatically adjusts direction.Photoelectric scanning device detects the change in location that filamentary material prolongs, and sends cue, and analyzes the result of line tension, thereby handle.Accurate measurement result needs high scan consume, and torsion element is only regulated the skew of line.
Among patent DE 198 37 414A tension force is defined, tension force is meant the tension force of being measured warp by tensiometer.Bobbin is connected with a bending rack, Yi Bian be tauted, is supporting an induction bar simultaneously.If line power makes deformation of timbering, the electronic signal that is contained on the induction bar then can change.
Based on the present invention, machine operation is more oversimplified, and protection machinery run well.
The adjusting task is implemented by following each technical characterictic.
Use up that to scan torsion element very simple and accurately, because reverse amplification by interval amplifier handle, wave detector provides signal clearly according to the variation of line power, in the scope that online power allows its small torsional variation is monitored, utilize the elasticity of torsion element to allow measurement remain in the regional extent of straight line.The light position contacting is depended in the signal demonstration of light wave detector, and it converts the torsion that obtains and amplify to the measured value of filamentary material tension force on torsion element.Bobbin has only by torsion element could obtain the desired high-frequency numerical value of tensiometer, for example the highest 2.5KHz.As do not have signal prompt, then be invalid tension force.When not being desired value of slope, can adjust as the signal grade line.Turn to when line and during frictional heat, from electronic unit, remove bobbin.Torsion element and scanister should be put in the zone of a shielding, so just can not make inevitably to shake in the filamentary material processing enterprise (for example: the pollution of light path) is produced big loss.This tensiometer need not overhaul, and very solid.
Directly intercept because reverse, so light source directly acts on torsion element by light.
In order to prevent the scanner sealing, have reversing of mechanical wave and send scanner to.
Summary of the invention
Light source on torsion element must be a laser, for fear of scattering of light, the impact reflective optical system should be housed.
Stable impact light source instructs torsion element, is very easily.The wave detector on big plane is to photaesthesia, and check and correction at interval on reverberator.Wave detector provides the signal that impacts the light state equilibrium, and then force measurement is also balanced when the position equilibrium.
Light source is practical VCSEL (rectilinear cavity surface emitting lasers), and this light source is very general and cheap.It is small luminous point and light beam.Because just with being connected of bobbin, thus should avoid scanner to make dirty or artificial destruction, so that prolong its serviceable life.
In order to make twisting property not be subjected to otherwise the influence, reverberator or light source should be placed on beyond the torsionspring.
Form plane reflection in torsion element, this catoptron must be the concavees lens of smooth brilliance.
Tensiometer is simple and cheap, if torsion element be a round bar then better, preferably diameter is 10.0 millimeters steel wire or a pipe.Torsionspring only needs about 10.0 millimeters long (during highest frequency).Be lower than the pipe of this limit, can allow bent stick impaired.
Scanister seals in addition, can not be subjected to the influence of external environment condition, this is because have only a fixed position that does not have the rolling bearing effect between scanister and thread arm, and under the effect of the carriage rolling bearing that also can easily not pollute, just can stretch to the inside of the pipe of scanister.
The bending of the torsion element that is produced by the pulling force of filamentary material all can influence the degree of accuracy of measurement, for example, the light transmission on the position sensitive detector is proper so use a torsion element, and this torsion element is to have big as far as possible bendind rigidity, can reverse again.An aspect according to this invention, this torsion element can be a kind of that have a bendind rigidity and can reverse, and be torsion element with the xsect of a horizontal three-dimensional on torsion shaft, here be particularly suitable for using L-, T-, U-, H-section bar material that is to say and uses a kind of bending rigidity section bar higher than torsional rigidity.
It is this that to be arranged in a support section bar or the structure of being determined by the fixed position of reversing section bar in the outer cover part very simple.Thisly reverse the quantity that section bar can reduce the tensiometer part, also can simplify the bracing or strutting arrangement that reverses section bar.The restriction otch should be definite like this, allows the section bar that reverses with bending rigidity reverse under the pulling force of filamentary material, and do not have bending to have only negligible slight bending in other words.The tensiometer structure is very simple, once form in an outer cover part as long as reverse section bar, and this outer cover part can mask the scanning of electronics and light.
Because it is clean to guarantee to limit otch, free from dust enters, and is very suitable so completely cut off it with an elastic sealing element.Specially suitablely be, use a kind of membranaceous, flat and whippy leather, this leather can be blocked the restriction otch, and can be deformed to the leather plane that is basically perpendicular to it in reversing the reversing of section bar.A very simple method is exactly to block the restriction otch by an elastic belt that sticks.
More suitable is that light source is on the face of the same torsion element vertical with torsion shaft basically with receiver.
Aim at can only relatively move receiver in this face of the light beam of receiver or perhaps beam reflected.
Can suitably select, light source and receiver are put on the edge grain of same torsion shaft basically, and this face is vertical with reverberator, and also comprise torsion shaft.In addition, be surrounded as an angle by light emitted light beam that comes out and the light beam that reflexes on the reverberator, for example, an acute angle.Layout can be tolerated by reverberator better to the fluctuation of light source distance and/or by the fluctuation of reverberator to the distance of receiver like this.In scanister, can arrange so in principle, under the non-initial state that reverses of torsion element, the light beam of aiming at receiver is mapped on the point of reference field of an optical position sensor of predesignating, for example, be positioned at the center of reference field, thereby can scan other bad reversing.
In order carefully to handle filamentary material carefully, thread arm should have a filamentary material deflection plane away from the bending of torsion shaft.Very simple on the version, for example, thread arm, the tail end of the bending of a torsion element.Also can select a kind of light-duty thread arm that rigidity is arranged or other material of forming by the material of torsion element to link to each other with torsion element.
Thread arm has a crank shape, the logical filamentary material gatherer of fork shape or a kind of shape, the crank support that crank contacts with filamentary material will be parallel to torsion shaft basically and place, an advantage so just is provided, and that is exactly that filamentary material can not exert an influence to measurement result when crank moves.Filamentary material does not allow friction.If possible, fork can have the advantage of twice deflection, and filamentary material has been assigned to the pulling force of filamentary material on the torsion shaft like this, just can carefully handle.The logical filamentary material introducing element of the shape of thread arm can be avoided other filamentary material introducing element, and can stop the dropping of filamentary material of tensiometer.Its advantage is in order to reach the natural frequency of high as far as possible tensiometer, to make thread arm have low-down rotation size just passable, can avoiding the error of mistaken measurement result like this.
Suitable is that torsion element is encased in the scanister in the antipollution outer cover against sunshine, if might only outstanding thread arm.Receiver and light source will be installed on the circuit board that has an electronic circuit.
Description of drawings
Below in conjunction with accompanying drawing,, as follows to the explained in detail of carrying out of the present invention:
Fig. 1 is the general view of tensiometer of the present invention;
Fig. 2 is the cut-open view of parts among Fig. 1;
Fig. 3 is the side view of Fig. 2;
Fig. 4 is the cut-open view of another version;
Fig. 5 is the cut-open view of another version;
Fig. 6 is the side view of Fig. 5;
Fig. 7 is vertical view of other version;
Fig. 8 is vertical view of another other version;
Fig. 9 is the detailed attached view of the photoelectric scanning device of tensiometer;
Figure 10 is the side view of other version;
Figure 11 is the view of other version;
Figure 12 is the view of another other version
Figure 13 is the view of another other version
Figure 14 is for going back the view of other version
Figure 15 is the general view of another other version;
Figure 16 is the skeleton diagram of Figure 14 on the torsion shaft direction.
Embodiment
Tensiometer T among Fig. 1 has a basic straight torsion element F as main element, a photoelectric scanning device A, a thread arm D; On the material M that some can prolong, for example, a rhizoid shape material Y, tensiometer can be tested its stress.
Torsion element F is for example made by disc material or tube type material.For example, elastic wire has a mark post 5, and an end 4 of mark post can be used as thread arm D, is bent in the direction vertical with mark post 5.The other end 6 of mark post 5 here also is bent.Torsion element F is fixed together with terminal 6 firmly at bracing or strutting arrangement 3 places, and on the next door of thread arm D, in rolling bearing 2, mark post 5 is supported, but can twist.For guarantee contact range 4 ' in thread arm D on the filamentary material Y that turns around to the distance of the torsion shaft of mark post 5, filamentary material Y can be incorporated into filamentary material and introduce in the element 1, also can stipulate a pipe 5 or with a sheet material (Figure 14) as torsion element F (Fig. 4,7,8) replace mark post 5.
Photoelectric scanning device A is by a minimum light source Q, Q
1And at least one receiver R composition, this receiver is installed in above the circuit board 7 of a charged sub-test circuit.Light source Q1 can hit receiver R with light beam L in Fig. 1, and reverberator 9 can be directly installed on the torsion spring F, and with another light source Q, for example diode mainly is an a VCSEL LL and light beam L strike reverberator 9.
Under the twisting action of torsion element, reflected beams is deflected on the receiver R relatively, and receiver obtains an output signal from position or perhaps the position change that light beam hit a little or hit grid.Receiver R is an optical position sensor P, for example, and said PSD.Light source Q and receiver R are installed on the same plane proper, and this face is perpendicular to the torsion shaft X (Fig. 2,3) of torsion spring F.
Perhaps, light source Q and receiver R are installed in same plane, this face is on the radial direction of torsion shaft X, and vertical and reverberator 9 (Fig. 5,6).This assemble method can tolerate better light source because the distance fluctuation that heat effect in other words conj.or perhaps causes is installed.When torsion element F is not reversed, when being in the original position, the striking point of light source is in the position of the reference field of the sensing element P that predesignates.When sensor installation P and light source, angled relatively, sharp angle for example.
Torsion element F can be installed in the antifouling outer cover 8 against sunshine (detailed description) together with photoelectric scanning device A, and is only outstanding outside thread arm D.For example, between torsion shaft X and fixing receiver R, at light source Q, between Q1 and the receiver R predetermined fixed gap multiplying arrangement Z, this gap multiplying arrangement Z can so just can clearly show the change of the situation of reversing around the actual size of reversing of torsion shaft X on amplification light path on the receiver R.
The reverberator 9 that light source Q1 among Fig. 1 forms in Fig. 2 or be a plane that in torsion element F, forms (can be a face that polishes, perhaps also can be a concave mirror), or be a spill reflecting body 10 that is stained with in appearance.The twisting motion of torsion element F (double-head arrow 11) can influence reflex to moving of light beam on the reverberator R, and light beam can therefrom obtain to depend on the output signal of twisting action, and this output signal directly becomes corresponding direct ratio with filamentary material stress.Here, mechanical organ will be installed like this, and torsion element F is only worked in the linear extent of its filamentary material characteristic curve at least basically at one.
In Fig. 4, light source Q can directly be fixed on torsion element F (for example, one 5 ' pipe) on, and want alignment light position transducer P, optical position sensor is range of a signal Z stably.
In Fig. 7 since in amplifying scale shown version, so structure is very clear, torsion element F be one 5 ' pipe, and an end is fixed in the outer cover 8 tightly or in the enclosure wall.Fixed position otherwise conduct heat.Load onto a thread arm D at the free tail end of 5 ' pipe, for example, a uncinus or a little ring 15.A carriage 18 is installed in inside at 5 ' pipe, it and the tail end part 19 in the thickening of the free tail end of 5 ' pipe are fixed together, and it is heat insulation, and extend to tail end part 20 by the fixed position, this tail end part can supporting light sources Q1, in other words is exactly reverberator 9.Receiver R and at the light source Q under the situation that reverberator 9 is arranged on the radius of same torsion shaft X, and on the face perpendicular to reverberator 9, and this face comprises torsion shaft X, light path has just formed an angle [alpha] mutually in this plane.If possible, the tail end part 20 of carriage 18 is the rotatable (not shown) that support.
In the version similar to Fig. 7,5 ' pipe tightly is fixed on two ends, for example, is fixed on the enclosure wall 8 in Fig. 8.Band receiver R and light source Q or also can be the heat that will mask thread arm D as the scanister of the reverberator 9 of light source Q1.The twisting action of 5 ' pipe is pass on to scanister by carriage 18 by the fixed position.One of tail end part of carriage 18 19 can be fixed on about centre position of 5 ' pipe.For example, thread arm D is fixed on the fixed position 21, this position is fixing tail end part 19 equally also.The free tail end of carriage 18 is to be mounted to rotatable the support, but not being must be like this, 5 ' pipe other end can seal by an outer cover 22, receiver R and at the light source Q under the situation that reverberator 9 is arranged here all on the radius of torsion shaft X, and on the face vertical with reverberator 9, and this face comprises torsion shaft X.
Fig. 9 is the view of the reference field 12 of optical position sensor P.Double-head arrow 11 ' direction on the position of the light beam L (light lattice or a luminous point) that gets be offset according to reversing.The signal that is obtained is directly proportional with the position of strike light beam in the length range of reference field 12.Reference field 12 can extend (plane move or around torsion shaft X bending) together with its longitudinal axis on the direction that light beam L moves.
What thread arm D formed in Figure 10 is a crank 13, and on crank, filamentary material contacts with a crank arm, and this crank arm is parallel with torsion spring F, and can move in the side.
The shape that thread arm D is a fork 14 in Figure 11, can suitably select filamentary material here is skew one times or twice.
In Figure 12, torsion element F is fastening supports at two ends.Thread arm D is installed in the centre of torsion element F, also lays a scanister within this scope.
In Figure 13, thread arm D is a hook-shaped filamentary material introducing element 15, and the distance of this introducing element 15 and torsion shaft X concurs.
In Figure 14,, form by the middle edge of a wing 16 that flat spring steel plate, two horizontal edges of a wing 17 are connected with as the torsion element F that reverses section bar.At the fixing thread arm D of a side in about centre position on the middle edge of a wing 16, be fixed for the reverberator 9,10 of scanister simultaneously at opposite side.A virtual torsion shaft X is arranged here.
In the version in Figure 15 and 16, torsion element F by one have that counter-bending rigidity and one can twist reverse section bar 5 " form, in a horizontal xsect on torsion shaft X, form a three dimensional shapes, the L angle-steel is demonstrated.Alternatively, reverse section bar 5 " also can be a U-, H-, T-type cross section perhaps forms a pipe that diameter is relatively big, and this pipe is made by at least one longitudinal cut, can reverse, and counter-bending.
In Figure 15, reverse section bar 5 " determine by the restriction otch 23 (or outer cover 8 of a corresponding form) on the L shaped support section bar H; like this by the tail end of restriction otch form simultaneously the stationary installation 3 of a torsion element F ', thread arm D is installed in and reverses section bar 5 " free tail end.Electronic component and photoelectric scanning device are installed in and reverse section bar 5 among Figure 15 " rear portion (not showing), and want conductively-closed.Enter into inside for fear of dust or sordid thing, restriction otch 23 should seal with elastic seal ring 24, for example uses a flat membranaceous elastic membrane, or a bonding elastic webbing of being made up of rubber or plastics.
Figure 15 has illustrated band reflecting surface 10, the installation site of the light source Q of Q1 and receiver R, and folded light beam L can hit on receiver.Reverse section bar 5 " reversing of producing under the effect of the power of filamentary material Y on thread arm D, O-ring seal 24 can form vertical substantially with its main interface, so just can produce less influence to measurement result.
Claims (8)
1. tensiometer (T) that is used to the power on the filamentary material (Y) of measuring, it comprises the torsion element (F) that an at least one end is fixed, one link to each other with torsion element (F) and and the contacted thread arm of filamentary material (Y) (D), the pulling force that relies on filamentary material that reverses around the torsion element of torsion shaft (X), and comprise a photoelectric scanning device (A), this photoelectric scanning device comprises the receiver (R) and the light source (Q that have reference field (12), Q1), light source (Q, Q1) light is mapped to the reference field (12) of receiver (R), it is characterized in that, light source (Q, Q1) or be directly installed on torsion element (F) go up or be installed in one be parallel to torsion shaft (X) and with carriage (18) that torsion element (F) is connected on, (Q is Q1) along with torsion element (F) moves around the motion of torsion shaft (X) for light source;
Receiver (R) is optical position sensing detector (PSD), and the corresponding hit position of the light on the output signal of its generation and the reference field (12) is proportional;
(Q Q1) is a LASER Light Source (LL) to light source, or the reverberator (9,10) of the light beam (L) of a LASER Light Source (LL);
Receiver (R) is apart from torsion shaft (X) certain distance, this distance greater than light source (Q, Q1) and the spacing of torsion shaft (X).
2. according to the tensiometer of claim 1, it is characterized in that described LASER Light Source (LL) is a vertical cavity surface emitting lasers VCSEL.
3. according to the tensiometer of claim 1, it is characterized in that (Q Q1) is connected on the torsion element (F) described light source.
4. according to the tensiometer of claim 1, it is characterized in that, described reverberator (9) in torsion element or above reflecting surface of formation.
5. according to the tensiometer of claim 1, it is characterized in that, described torsion element (F) is a pole (5), make by elastic wire, an or pipe (5 '), with the pipe of at least one longitudinal incision, or one have bending rigidity, can reverse reverse section bar (5 "), this reverses section bar (5 ") and has a horizontal three-dimensional xsect on torsion shaft (X) cross section.
6. according to the tensiometer of claim 1, it is characterized in that, described torsion element (F) will be fixed tightly for pipe (5 ') and an end or two ends, carriage (18) is fixed on the inside of pipe (5 '), one of fixed position by pipe (5 ') or fixed position extend to photoelectric scanning device (A), and in the scope of photoelectric scanning device (A), have light source (Q, Q1).
7. according to the tensiometer of claim 1, it is characterized in that described torsion element (F) is to reverse section bar (5 "), the described section bar (5 ") that reverses is installed in the outer cover part (8), and is limited by the restriction cross section (23) in the outer cover part (8); Described restriction cross section (23) is by an elastic seal ring (24) sealing.
8. according to the tensiometer of claim 1, it is characterized in that, described light source (Q, Q1) and receiver (R) to be installed on the circuit board with an electronic circuit (7).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2002159727 DE10259727A1 (en) | 2002-12-19 | 2002-12-19 | Tensiometer |
| DE10259727.8 | 2002-12-19 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1729391A CN1729391A (en) | 2006-02-01 |
| CN100465603C true CN100465603C (en) | 2009-03-04 |
Family
ID=32477832
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003801070228A Expired - Fee Related CN100465603C (en) | 2002-12-19 | 2003-12-09 | Tensometer |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1604180A1 (en) |
| CN (1) | CN100465603C (en) |
| AU (1) | AU2003289999A1 (en) |
| DE (1) | DE10259727A1 (en) |
| WO (1) | WO2004057289A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102203516B1 (en) * | 2013-03-12 | 2021-01-18 | 스트리커 코포레이션 | Sensor assembly and method for measuring forces and torques |
| CN106087149B (en) * | 2016-07-27 | 2018-01-19 | 安徽日发纺织机械有限公司 | A kind of laser broken yarn counting and detecting device and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100336A (en) * | 1985-02-27 | 1987-01-07 | 巴马格·巴默机器制造股份公司 | The fibre tension measurement mechanism that has the fiber detector that to make elastic movement |
| EP0288784A2 (en) * | 1987-04-18 | 1988-11-02 | Barmag Ag | Device for measuring thread tension provided with a thread feeler mounted on springs |
| CN1068943C (en) * | 1997-06-06 | 2001-07-25 | 清华大学 | Laser silk string tension dynamometer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1573747A1 (en) * | 1966-01-24 | 1969-07-24 | Palitex Project Co Gmbh | Device for electrical measurement of the tension on running threads in textile machines |
| DE1933749C2 (en) * | 1969-07-03 | 1984-07-19 | Enka Glanzstoff Ag, 5600 Wuppertal | Device for measuring the tensile force on running fiber cables |
| CS260729B1 (en) * | 1987-04-28 | 1989-01-12 | Zdenek Vitamvas | Pickup of textile threads' tractive force |
| DD279062A1 (en) * | 1988-12-29 | 1990-05-23 | Verlade Transportanlagen | FORCE MEASURING AXIS |
-
2002
- 2002-12-19 DE DE2002159727 patent/DE10259727A1/en not_active Withdrawn
-
2003
- 2003-12-09 WO PCT/EP2003/013961 patent/WO2004057289A1/en not_active Application Discontinuation
- 2003-12-09 CN CNB2003801070228A patent/CN100465603C/en not_active Expired - Fee Related
- 2003-12-09 AU AU2003289999A patent/AU2003289999A1/en not_active Abandoned
- 2003-12-09 EP EP03782351A patent/EP1604180A1/en not_active Ceased
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN86100336A (en) * | 1985-02-27 | 1987-01-07 | 巴马格·巴默机器制造股份公司 | The fibre tension measurement mechanism that has the fiber detector that to make elastic movement |
| EP0288784A2 (en) * | 1987-04-18 | 1988-11-02 | Barmag Ag | Device for measuring thread tension provided with a thread feeler mounted on springs |
| CN1068943C (en) * | 1997-06-06 | 2001-07-25 | 清华大学 | Laser silk string tension dynamometer |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10259727A1 (en) | 2004-07-08 |
| EP1604180A1 (en) | 2005-12-14 |
| AU2003289999A1 (en) | 2004-07-14 |
| WO2004057289A1 (en) | 2004-07-08 |
| CN1729391A (en) | 2006-02-01 |
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