KR960005973B1 - Method and apparatus for counting filament of multi-filament thread - Google Patents

Abstract

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Description

Method for counting the number of constituent filaments of multi-filament yarns and apparatus therefor

1A is a plan view showing an overall configuration.

1B is an explanatory diagram of a counting device.

1C is an explanatory diagram of a splitting device.

2 is an enlarged plan view of a filament contact portion to be aligned.

3 is a cross-sectional view of a multifilament yarn.

4 is an explanatory diagram showing the alignment of single yarn filaments.

5 is a chart measuring the step-down state of the tension of the yarn body when the single filament is cut in sequence.

FIG. 6 is an explanatory diagram showing a state in which the multifilament thread body is placed on a portion where the multifilament yarn is held.

7 is a side view of the grip portion.

8 is an enlarged cross sectional view of the filament contact of the alignment stage.

9 is an explanatory diagram of a vibration generating unit provided in the lower portion of the alignment table.

10 is a system block diagram of a data processing unit.

11 is a chart showing the tension lowering state of the thread body including a pattern in which a plurality of single filaments are simultaneously cut.

Fig. 12 is a plan view of the carver of the splitting apparatus removed.

Figure 13a is a side view of the vibration generating unit of the alignment of the separate embodiment.

Fig. 13B is a sectional view in the Y ₁ -Y ₂ direction thereof.

14 is a block diagram of a vibration generating method corresponding to FIGS. 13A and 13B.

15 is a block diagram of a separate dynamic generation method.

16 is an explanatory diagram of other vibration generating expression.

17A is a side view showing the configuration of the rotating means of the circular blade.

17b is likewise a cross-sectional view of the X ₁ -X ₂ portion.

* Explanation of symbols for main parts of the drawings

2: alignment bar 4: tension sensor

50,51: rotary drive 52: friction roller

53: contact 60: motor

The present invention relates to a method and an apparatus for counting the number of constituent filaments of a multifilament threaded body composed of a plurality of filaments.

In the case of counting the number of constituent filaments of the multifilament yarn body, there are the following techniques that have been put to practical use in the past.

)을 풀로 붙인판에 내뿜어서, 이것을 눈으로 보아 계수하는 것에 의하여 구성본수를 검지한다.① The operator rubs the multifilament threaded body with an object such as chalk, charges the filaments of each of the multifilament threaded bodies, and resonates with each other by the coulomb force generated by the positively charged charge. To divide this, and it is a black velvet (

The number of components is detected by counting them with a glued sheet and visually counting them.

(2) In the technique of Japanese Patent Application Laid-Open No. 52-28909, which was first discovered by the present inventor, a synthetic filament yarn having a circular cross-sectional shape is neatly arranged on an alignment stage and irradiated with light.

At this time, the number of constituent filaments is detected by optically and electronically counting the bright lines by using the light passing through the filaments to be condensed by the light-collecting action of the filaments having a circular cross-sectional shape to form a band-shaped bright line.

The technique of ① above is inefficient because of the hand work and the eyes of the worker, and the whole filament may not be completely distributed, so that the number of constituent filaments of the multifilament thread sample having a normal filament number is There was a large number of counts), and on the contrary, there was a high probability of missing a sample of abnormally abnormal water (with a lack) as a normal one and lacking reliability.

In order to improve this, the technique described in ② of the Japanese Patent Application Laid-Open Publication No. 52-28909, which was originally invented by the present inventors, was a suitable method because a synthetic filament having a circular cross section at the time of the invention was produced.

In recent years, however, with the advancement of the technology of the synthetic fiber industry, high quality and high added value, the production rate of so-called sectional cross section of each filament cross section, such as triangle, bee form, hexagon, etc., has been increasing. In the technique described in Japanese Patent Application Laid-Open No. 52-28909, which allows optical and electronic counting of the number of filaments based on the light condensing effect, the number of constituent filaments of the multifilament threaded body composed of a filament having a heterogeneous cross-sectional shape is counted. I could not.

For this reason, the inverted cross-section multifilament yarns are inefficient and inaccurate, so they have no choice but to rely on the original handwork and the method of eye mass factor.

SUMMARY OF THE INVENTION An object of the present invention is to provide a method and apparatus for counting spherical filament number of multifilament yarns that can be applied not only to conventional circular cross-section multifilament yarns but also to cross-section multifilament yarns.

It is also an object of the present invention to provide a method and apparatus for counting the number of component filaments of a multifilament threaded body so that the count of the number of component filaments can be accurately performed.

It is still another object of the present invention to provide a method and an apparatus for counting the number of component filaments of a multifilament threaded body in which the count of the number of component filaments is automatically performed, thereby improving the working efficiency of the filament inspection process. According to the present invention, when a tensile deformation is applied to a multifilament threaded body, the stress generated in the multifilament threaded body, that is, the tension is a cross section of the multifilament threaded body, that is, each single filament constituting the multifilament threaded body The cross-sectional area of () is approximately in proportion to the number of filaments, and has the following configuration.

That is, in the method of counting the constituent filament fraction of the multifilament threaded body of the present invention, the multifilament threaded body is press-fitted to the alignment table according to the tension of the threaded body, and then aligned. The number of constituent filaments is determined by sequentially cutting the filaments and measuring the step-down state of tension of the multifilament yarns produced at that time.

The apparatus for counting the number of constituent filaments of the multifilament threaded body of the present invention for carrying out this method includes a pair of catching parts for holding a multifilament threaded body provided with a required interval therebetween, and the middle of the catching part. An alignment table positioned at and positioned to press and align the multifilament yarns under appropriate tension, cutting means installed in the vicinity of the alignment table to sequentially cut the filaments of the multifilament yarns, and cutting the multifilament yarns And a data processing unit for determining the number of constituent filaments as data indicating a tension sensor for measuring the tension lowering state accompanying the tension sensor and a stepwise lowering state of the tension measured by the tension sensor.

When the multifilament threaded body is pressed against the alignment table with the tension of the multifilament threaded body itself, the terminal filaments distributed in the normal state of the entire cross-section of the threaded body close to a circle have a flat cross section of the entire threaded body. In the vicinity of the alignment table, they are arranged almost in one layer, leaving some two-layer stacking filaments.

In this state, while measuring the tension of the multifilament yarn as a tension sensor, if the filament is sequentially cut by a blade, a high-temperature heating material that replaces the blade, or a laser beam, the filament is produced in the multifilament yarn. The tension is measured in step with the cutting of the single filament.

In the step-down measurement of this tension, a filament is forcibly contacted by a blade or a high temperature heated material when the multifilament thread body is broken by a conventional tensile tester or before the breakage by the tensile tester. The state of falling of the tension of the filament threaded body can be measured at equal time intervals than when the tension is lowered by cutting.

In other words, when the tension is lowered by forcibly cutting the filament by contacting a blade or a high temperature heated material before the fracture by the tensile tester or the fracture by the tensioning machine, the tension sensor may be of high response speed. It is only measured the collective drop of tension by cutting a number of threads in a block of a number of threads, and, as in the method and apparatus of the present invention, the step-down of tension by cutting each filament sequentially The phenomenon is not recognized.

In this way, when the method and apparatus of the present invention are applied, the tension of the multifilament threaded body can be stepped down very clearly, whereby the number of filaments constituting the multifilament threaded body can be easily counted.

That is, a circular cross-section multifilament yarn, as well as a hetero-cross-section multifilament yarn that could not be counted in the past, or acrylic multifilament yarn obtained as wet spinning having a surface even if the cross section is circular. By a photochemical method such as a sieve, a plurality of constituent filaments of the multifilament threaded body in which the constituent filament number is not counted can be also counted.

Further, according to the present invention, since the number of constituent filaments of the following multifilament yarns can be counted automatically and accurately, the work efficiency of the filament inspection process is improved, and the labor saving (human saving) can be drastically improved.

In particular, in the industry of producing nylon filament yarn of nylon and polyester in which the production rate of deformed section yarn increases in the future, defective products of the knitted fabric by exhausting the yarn with the odd number of filament heads with a high probability before the knitting process Since the present invention can be reduced, the technique of the present invention can be a measure of useful quality control and production control.

First, an embodiment apparatus of the present invention will be described based on FIGS. 1A, 1B, and 1C.

That is, the present embodiment device is a device used when counting the number of constituent filaments of the multifilament thread body (M), the rotary drive member 50, 51 and the rotary drive member 50, ( 51) and a friction roller 52 which is provided so as to be externally attached to and detached from the upper surface of the roller and rubs and multiplies the multifilament threaded body M on the upper surface thereof, and the friction roller 52 below the friction roller 52. A set of holding portions (1) and (1) 'for holding a splitting device (P) having a contact body (53) provided in contact with the lower surface, and a multifilament thread body (M) provided with a required distance therebetween. And an alignment table (2) positioned in the middle of the two catching portions (1) and (1) 'to press and align the multifilament thread body (M) under an appropriate tension, and the vicinity of the alignment table (2). Cutting means (3) for sequentially cutting the constituent filaments of the multifilament thread body (M) installed in the multifilament, and the multifilament Data processing unit for determining the number of constituent filaments from the tension sensor (4) for measuring the tension lowering state accompanying the cutting of the thread body (M) and the data indicating the progressively lowered state of the tension measured by the tension analyzer (4) It is comprised as the counting device Q provided with (5).

After the multifilament thread body M is contacted with the surface of the friction roller 52 of the splitting apparatus P at the position indicated by the dotted line in FIG. 1a and rubbed, the solid filament thread M is shown in solid line in FIG. Likewise, the multifilament threaded body M is moved to the counting device Q side, and as the parts 1 and 1 held by both ends of the threaded body, the lowered parts 1 and 1 are then lowered. As shown in FIG. 1B, when the multifilament threaded body M is pressed against the alignment table 2 with the tension of the multifilament threaded body M itself, the multifilament threaded body ( M) The single filament F, which is distributed and arranged so that the outer circumference of the entire cross section is closer to the circle, is arranged so that the cross-sectional distribution is flat as shown in Fig. 4 by pressure welding, leaving almost two layers of filaments. Arrange as

In this state, while measuring the tension of the multifilament threaded body M as the tension sensor 4, by the blade 3 displayed on the enlarged plan view of the filament contact portion of the alignment object in FIG. When the filaments are sequentially cut by contacting the hot heating material instead of (3) or by irradiating the laser beam to the filament, the tension generated in the multifilament thread body M as shown in FIG. In addition to cutting of the single filament F, the phenomenon of falling in stages is measured.

FIG. 12 is a plan view showing a state in which the carver 54 of the splitting apparatus P shown in FIG. 1C is removed.

The end portions 521 and 522 of the friction roller 52 are composed of a ferromagnetic material such as mild steel or iron alloy, and are made of the same ferromagnetic material. ), (502), (511) and (512).

In addition, the central portions of the disks 504, 502, 511, and 512 having these stages are fixed to the rotating shafts 504 and 514 made of ferromagnetic materials, respectively, and the rotating shafts 504 and 514, respectively. ) Is rotatably held in bearings 505, 506, 515, 516 and driven by a motor 60 and a timing belt transmission 61, 62 with a reduction gear, It is made to rotate at the same speed in the same direction.

The rotary shafts 504 and 514 are excited by the direction of the arrow shown in FIG. 12 when the solenoid coils 503 and 513 fixed to the apparatus are energized, respectively.

Since the motor 60 is rotated while energizing the solenoid coils 503 and 513 serving as the suction means, the end portions 521 and 522 of the friction roller 52 are held in contact with each other. The single binary disks 501, 502, 511 and 512 are suitably attracted and rotated by magnetic force.

In addition, the staged discs 501, 502, and (511, 512) are attached to each other as shown in Fig. 12, and the lower edge side (that is, the side slightly smaller) faces inward. Since it is disposed, the friction roller 52 has an upper end side (a large diameter side) of the discs 501, 502, [511, 512] whose ends are cut through the end portions 521, 522. ) It is regulated to the inner side, and does not deviate or jump out in the longitudinal direction (rotation axis direction) at the time of rotation.

Further, the contact pressure of the contact member 53 (see also the first c) is small, and accordingly, the end portions 521 and 522 of the friction rollers 52 have a sufficiently large contact pressure and have a stepped disk 501. If the contact points 502, 511, and 512 can be brought into contact with each other, the suction means including the solenoid coils 503 and 513 may not necessarily be provided.

Friction rollers are operated by the action of the rotary drive bodies 50 and 51 configured as such single-stage discs 501, 502 [511, 512] and rotation shafts 504 [514]. Since 52 rotates, when the multifilament threaded body M is rubbed by lightly contacting the center portion 520 of the friction roller 52, the antistatic or filament zip attached to the surface of the multifilament threaded body M is attached. The oil agent for improving the property is transferred to the surface of the roller 52, and the static electricity generated by the friction with the friction roller 52 is charged to each filament. As a result, the focusing property of the multifilament threaded body M is reduced, and it is possible to prevent several filaments from being cut at the same time when cutting the filament, and to reliably change the tension of the multifilament threaded body M in stages. .

By suppressing simultaneous cutting in this way, the reliability of the constituent filament coefficient of factor described later is improved.

In order to more effectively charge the static electricity due to friction, which is one of the actions of the splitting device P, the material of the central portion 520 of the friction roller 52 may be made of alumina porcelain, titanium oxide porcelain, or mash. It is possible to prepare a multi-layered composite of various ceramics such as a ceramic (a mica including a mica) or various plastic materials such as polystyrene, polypropylene and leprone, or a laminate of fiber element materials such as paper and wool felt. According to the kind of filament thread body M, it selects (exchanges) suitably.

In order to facilitate the replacement of the friction roller 52 at this time, the above-described self-adsorption driving method is adopted. When the energization of the solenoid coils 503 and 513 is stopped, the friction roller 52 can be easily replaced. There is a number.

Further, since the friction roller 52 is magnetically adsorbed with a relatively weak force, the friction roller 52 floats upward even if a finger is pinched between the friction roller 52 and the cover 54. Since the rotation stops, this method also provides safety measures.

Next, as shown in FIG. 1C, in the splitting apparatus P of this embodiment, a contact member 53 is provided below the friction roller 52, which is connected to the friction roller 52 by a spring 53a. The lower surface of the central portion 520 of the slide is lightly pressed to be movable.

The contact body 53 removes the oil transferred from the multifilament threaded body M to the surface of the central portion 520 of the friction roller 52, and removes the friction roller 52 from the multifilament threaded body M. In order to make the transition of the oil agent to the surface of the central portion 520 more effective, the powder having high oil adsorption capacity is applied to the surface.

When only the effect of the former (degreasing) is expected, a laminate of fiber materials such as paper and cloth is used as the material of the contact member 53, and calcium carbonate is expected when the effect of both (degreasing and powdering) is expected. We insert powder such as, marble, graphite and harden and use dry thing.

Which of these is used is appropriately selected depending on the material and number of filaments of the multifilament thread thread body M to be counted, and the contact body 53 is exchanged when the friction roller 52 is replaced.

The multifilament threaded body M subjected to the pretreatment in such a dividing device P is moved to the position shown by the solid line of FIG. 1a, and the both ends are grasped as shown in FIG.

First, the multifilament thread body M on the lower thread gripping member 7 provided on the upper side of the movable arm 6 on the left side and the lower thread gripping member 7 ′ provided on the upper side of the movable arm 6 'on the right side. Lightly touch

Next, while pulling the multifilament threaded body M with both hands, as shown in FIG. 7 (a side view of the catching part 1 and the catching part 1 'side are omitted), left and right movable arms 6, (6) by lowering the working ends (19) and (19) of the thread catching devices (9) and (9) at the upper part of '6', and are respectively provided below the working ends (19) and (19) '. The upper yarn gripping members 8, 8 'and the lower yarn gripping members 7, 7 are pressed against each other so as not to be slipped by the tension generated later by the multifilament yarn gripping member M. Catch.

At this time, in the case where the multifilament thread body M is a synthetic fiber unstretched yarn, it is sufficiently tensioned by both hands (stretched several times than the length of the initial state) to a state close to the normal stretched yarn. After stretching, have them catch this.

A side view of an example of the catching portion 1 used in this embodiment is shown in FIG. The thread catching device 9 is engaged with the movable arm 6 by the support shaft 10 and moves with the support shaft 10 as a point.

At this point, a U-shaped spring 11 is attached to the opposite side of the upper thread gripping member 8, and the same force as that of pressing the upper thread gripping member 8 downward is generated, but the multifilament thread body ( It is pressed by the movable rod 12 until M is attached, and the hole is opened between the lower side gripping member 7 and the upper side gripping member 8.

In addition, the lower yarn holding member 7 and the upper yarn holding member 8 are made of a rubber-like material having a large friction and a large elasticity in order to sufficiently hold the multifilament yarn holding body M so as not to be slipped.

In such a state, when the multifilament thread body M is inserted between the onion supporting members 7 and 8, and the movable rod 12 is lifted up, the reaction force of the U-shaped spring 11 is upward. The thread holding member 8 is pushed down to hold the multifilament threading member M between the lower thread holding member 7.

In this way, the multifilament threaded body M is gripped between the left and right movable arms 6 and 6 ', and then the left and right catching portions 1 and 1 are specifically designed as the left and right movable arms 6. ) And (6) 'respectively drop.

This state is a state of FIG. 1B.

Alignment table 2 is asymmetrical in cross section, as shown in FIG. 8, and is far from blade 3 as cutting means, that is, in this embodiment, of curvature of curved surface 13 on the left side. It is large and the curvature of the curved surface 14 of the right side facing the blade 3, ie, facing the blade 3, is small.

When cutting the filament by the blade 3, the cutting position is closer to the part where the multifilament threaded body M and the alignment table 2 are pressed, so that the tension is lowered stepwise. Because it can be realized.

Furthermore, as shown in FIG. 9, the ultrasonic vibrators 2b and 2c are provided in the lower part of the alignment table 2 (called the vibration generating part 20) with the electrode 2d interposed. The high frequency voltage is applied between the electrode 2d and the alignment table 2 and the tip 2a electrically connected to the coin, whereby the alignment table 2 is ultrasonically vibrated (for example, 28 KHz). It is supposed to.

The vibration frequency of the alignment table 2 may not necessarily be an ultrasonic frequency exceeding the range of the audible frequency, and is a frequency band capable of sufficiently responding to the step-down speed of tension of the multifilament thread body M, that is, a tension sensor. Vibration frequencies (for example, 1.5 KHz or more) that are slightly higher than the natural vibration frequency (which is set to about 1 KHz in this embodiment) of (4) are possible. Examples of the device are shown in FIGS. 13A and 13B. Display.

FIG. 13A shows a side view of the vibration generating unit 20 of the alignment stage 2 when no ultrasonic vibration is used (the upper portion of the alignment stage 2 is composed of a bar extending out to lift from one side). And hereinafter referred to as an alignment table vibrating piece 21], and Fig. 13B is a sectional view taken along the Y ₁ -Y ₂ direction in this figure.

In 13a, the alignment table vibrating piece 21 is fixed to the right side of the magnetic core 211 by a clamping metal fitting 212 and a screw 213.

The alignment table vibrating element 21 has a rectangular cross section in the range of S1 in the drawing, and the alignment shown in FIG. 8 in which the left curvature is large and the right curvature is small in the range of S2 as shown in FIG. 13B. It has a cross-sectional shape similar to that of the top of the base 2.

In addition, the alignment table vibrating piece 21 is made of a magnetic material and has high abrasion resistance with the multifilament threaded body M (e.g., tungsten steel, chromium steel, high carbon steel) or a titanium nitride thereof. It is made by surface coating with titanium carbide.

The magnetic core 211 is composed of a laminate of silicon steel sheets or a soft ferrite (ferrite used as a magnetic core for a replacement magnetic field when the hysteresis in the magnetization characteristic is small, for example, iron oxide, which is mainly composed of manganese or zinc). Compound or a ferrite obtained by mixing and baking a compound of nickel or zinc) and excited by an excitation coil 214.

The excitation coil 214 amplifies the oscillation output of the variable frequency oscillator 216 as the amplifier 218 by the method shown in FIG. 14, and is supplied with an alternating current K ₁ sin? 211), the magnetic flux of the magnetic flux (Φ = K ₂ sin ωt) which makes the alignment table vibration piece 21 and the space | gap part into a loop (annular line loop) is produced | generated.

Since the suction force generated between the magnetic core 211 and the vibrating piece 21 of the alignment table in the air gap 210 is proportional to the power of the magnetic flux Φ, the suction force f therebetween is f = K ₃ ø ²

= K3 (K2sinωt) ²

= K ₃ (K ₂ ) ² sin ² ωt

+

sin(2ωt-

)}= K ₃ (K ₂ ) ² {

+

sin (2ωt-

)}

(K₂)²K₃{1+sin(2ωt-

)}=

(K ₂ ) ² K ₃ {1 + sin (2ωt-

)}

(K₂)²K₃로 하면,Where K ₄ =

(K ₂ ) ² K ₃

)}f = K ₄ {1 + sin (2ωt-

)}

The suction force oscillates at twice the frequency of the alternating current.

For this reason, when the frequency of the AC power supply connected to the excitation coil 214 is 1/2 of the natural frequency of the alignment table vibration piece 21, the alignment table vibration piece 21 resonates and vibrates greatly.

The excitation circuit shown in FIG. 14 adjusts the oscillation frequency by manually adjusting the variable resistor 217 in which the oscillation frequency of the alternating current applied to the excitation coil 214 is incorporated into the variable frequency oscillator 216. FIG. The oscillation is performed by tuning to 1/2 of the natural frequency of the piece 21, and amplified by the amplifier 218 to supply excitation power to the excitation coil 214.

In addition, the other vibration generating method shown in FIG. 15 has a position close to a part of the vibrating portion of the alignment table vibrating piece 21 ((as shown in FIG. 13A, where the alignment vibrating piece 21 is fixed). Resistance strain gauge 219 is attached to the resistance wire strain gage 219 to detect the deviation of the alignment bar vibrating element 21, and this is used as an amplifier ( 218 is inputted and amplified to supply excitation current to excitation coil 214, whereby the deviation of alignment bar vibration piece 21 is detected by resistance line strain gage 219, and is indicated by the dotted line in FIG. The resistance feedback strain gage 219? The amplifier 218? The excitation coil 214? The resistance strain gage 219. A series of loops is formed, and oscillation is performed as a frequency having the highest gain of itself, that is, a natural vibration frequency of the alignment table vibrating element 21.

In this case, it is necessary to appropriately set the electrical phase relationship of the input and output of the amplifier 218 and its amplification rate, for example, the phase relationship is the positive feedback direction, and the amplification rate is the alignment band vibration. In the natural frequency band of the piece 21, the total gain of the loop including the dotted mechanical feedback loop 215 is slightly higher than one.

In addition, the output of the amplifier 218 superimposes a voltage of + or-directly so that the polarity is not inverted, so that electric oscillation is performed at one times the natural frequency of the alignment table vibration piece 21.

As described above, in the excitation method according to FIG. 15, since the oscillation is automatically performed after the natural frequency of the alignment table vibrating piece 21, the natural frequency of the alignment table vibrating piece 21 changes due to temperature or other factors. Even if the oscillation is always performed at the frequency following it, the vibration amplitude of the alignment table vibration piece 21 can be stably maintained.

The above method is a method of vibrating the alignment table vibrating piece 21 using magnetic absorption force, but is shown in FIG. 16 as another method.

There is also a method of imparting a vibration force as the electrical deformation element 220.

In this case, in the ceramic-strained electric strainer such as barium titanate (BaTiO ₃ ) and titanate (PbTiO ₃ ), the strainer vibrates in the longitudinal direction by applying voltage to the ceramic strainer as shown in the figure. An amplifier shown in FIGS. 14 and 15 on the lead wires 221, 222 connected to the double-sided electrodes of the electrical deformation element 220, with an adhesive such as an epoxy resin or a phenol resin based on the lower side of the piece 21. An output voltage of 218 is applied.

As a result, the electrical deformation element 220 expands and contracts in the direction of the arrow (horizontal direction) of the drawing, and the vibration is continued as in the case where the alignment table vibrating element 21 is magnetically (here, the amplifier 218). In the case of the magnetic method described above, the current value was large at a relatively low voltage, but in the case of this method using an electric strainer, the output of the small current at a high voltage was obtained.

In addition, the frequency of this electrical output is made to correspond to the natural frequency of 1: 1 of the oscillation piece 21 including the electrical deformation element 220.]

In this case, as the excitation circuit, circuits in which the excitation coils 214 shown in Figs. 14 and 15 are replaced with the electric deformation element 220 can be used, but the electric deformation element 220 itself is applicable. The mechanical characteristics of the system are influenced by temperature, and the natural frequency of the alignment table vibrating element 21 (the natural frequency including the electrical deformation element 220) tends to change, and thus the method according to FIG. Was suitable.

Next, a method of lowering the left and right movable arms 6 and 6 'to press-contact the multifilament threaded body M to the alignment table 2 will be described.

In this method, one of the following methods ① to ④ is selected in advance according to the type of multifilament thread body M, and it is set to a controller (not shown) for driving the left and right movable arms 6 and 6 '. do.

(1) The left and right movable arms (6) and (6) 'are lowered at the same speed, and the tension set forth in advance by the material and the total denier of the multifilament thread body (M) is omitted. Stop at the point where

(2) First, the descent is started in advance of the left movable arm (6), and then the descent of the movable arm (6) on the right side is started, and the two movable arms (6) and (6) are dropped at the same speed, and the multifilament A method of stopping both the left and right movable arms (6) and (6) 'together when the thread body (M) reaches the set tension.

(3) A method in which the left and right movable arms (6) and (6) 'are simultaneously started to descend at different speeds, and the left and right movable arms (6) and (6)' are stopped at the same time when the set tension is reached.

④ After the above ①, ② or ③, if only the movable arm 6 on the left is descended at a slow speed in four methods ① to ④, the number of constituent filaments is small, for example, 10 or less. In step (1), a definite tension drop corresponding to cutting of one filament can be obtained.

However, when the number of constituent filaments is larger than that, the method of (2) or (3) above is started to select a method in which the coefficient reliability described later is statistically high.

In the case of a multifilament thread material of a large kind of stress relaxation (a phenomenon in which tension is gradually decreased when the tensile force is maintained), the movable arm 6 on the left side is performed again after the above-described method of ①, ② or ③. By selecting and setting the method of (4) above which the speed drops to only the microspeed, the decrease in tension due to stress relaxation is reduced.

In this case, if only the movable arm 6 on the left side is lowered in a slow speed, when the movable arm 6 'on the right side positioned near the tension sensor 4 is lowered, it is used to drive the movable arm 6'. Since the vibration of the pulse motor (not shown) is transmitted to the tension sensor 4, and the accurate tension measurement is not performed, it is a measure taken to prevent (avoidance) this inconvenience.

Next, the driving method of the blade 3, which is one of cutting means, will be described.

When initially setting the multifilament threaded body M in the state of FIG. 6, filament cutting will arise if the multifilament threaded body M touches the blade 3 at least a little. For this reason, in the state of FIG. 6, the blade 3 is pulled back.

Next, the multifilament thread body M is held, and the left and right movable arms 6 and 6 'are lowered, the blade 3 is advanced in the state of FIG. 16, and the filament is sequentially cut. If the cutting speed of the blade 3 is high when cutting the filament, the filament is almost cut and rolled, and the tension fluctuation does not become a stepwise descending state so that one piece can be discriminated squarely as shown in FIG.

For this reason, a photoelectric sensor (not shown) is attached to the drive arm of the blade 3, whereby the multifilament thread body M is detected, and the blade 3 is connected to the multifilament thread body M. A method of cutting the filament by successively engaging the high speed up to the edge of the blade) and then contacting the speed of the blade 3 at the speed of tailing.

As the speed of the blade 3 of this filament cutting yarn, 0.02 to 0.5 mm / sec is employed in this embodiment, and a multifilament thread body M is used by using a pulse motor (not shown) to drive the blade 3. In the case where the filament is thin and the number of the filaments is slow, the filament is thick and the number of the filaments is thick.

Specifically, the blade 3 is a circular knife. The rotating means 30 will be described below with reference to FIGS. 17A and 17B.

FIG. 17A is a side view of the periphery of the blade 3, and the X ₁ -X ₂ partial sectional view of this figure is shown in FIG. 17B.

Here, the blade 3 is attached to the attachment shaft 312 rotatably penetrated through the front and rear movement arm 311, and is connected to the A gear 313 with the gap therebetween. The B gear 314 meshes with this A gear 313. When the B gear 314 rotates, the blade 3 also rotates.

In addition, the C gear 315 is connected to the B gear 314 concentrically, and the C gear 315 is in contact with the crotch and the spring 316.

This crotch spring 316 has a structure as shown in FIG. 17A and is fixed to the front and rear moving arm 211 by a stop hinge 317.

Since it is comprised in this way, after cutting the multifilament threaded body M by the blade 3 in the position shown by the dashed-dotted line in FIG. 17A, the direction after the front-back movement arm 311 (the opposite direction to the arrow in drawing) And the back portion of the crotch spring 316 comes into contact with the rod 319 provided on the substrate 318 at the position just before returning to the last position, whereby the crotch spring 316 is relatively After moving in the direction indicated by the arrow in the figure, and propelling the C gear 315 counterclockwise for one tooth at the end of the crotch spring 316, the front and rear movement arm 311 is the last. Reach the negative and stop. By this operation, the blade 3 along with the A gear 313 rotates clockwise in the following angle θ.

For this reason, the next time the front and rear moving arm 311 advances and cuts the multifilament threaded body M from the blade 3, the blade 3 and the multifilament threaded body M are always separated from the previous time. It can be sharply cut at the new knife point.

In this way, the blade 3 rotates θ each time the front and rear movement arm 311 advances and retreats. At this time, the number of teeth of the A gear 313, the B gear 314, and the C gear 315 are respectively divided by a minority value ((A gear 313 in this embodiment has 31 teeth, B gear). 314 is 29 teeth, C gear 315 is 37 teeth)], even if the blade 3 rotates once, the cutting action position does not return to its original position.

More specifically, in the present embodiment, the rotation angle θ is as follows.

By this, when the blade 3 calculates the reciprocating frequency N ₁ of the front-back movement arm 311 for 360 degree-rotation ₁ , it becomes as follows.

As a result, the value of N ₁ is 0.5517... Even if the blade (3) rotates 360 degrees and one rotation, the blade is returned to a position different from the initial position.

Thus, in order for the N _{1 to} become an integer value and the cutting action position returns to the initial position, the blade is divided by the number 29 of the denominator of the fraction of the N ₁ value, that is, the number of teeth of the B gear 314. (3) needs to rotate.

When the round trip frequency (Nrst) value of the forward and backward moving arm 311 until this reset (the cutting position returns to the initial position) is obtained,

Thus, the blade 3 contacts and cuts the multifilament threaded body M at a position in which the working surface is divided into 1147 over 360 degrees of the entire circumference.

As a result, since the blade 3 averages its poles and cuts the multifilament threaded body M, when cutting the multifilament threaded body M using only a part of the blade 3 fixedly each time. On the contrary, the life of the blade 3 can be significantly increased.

In addition to this method, by coating the blade 3 with a material having a high hardness such as titanium nitride, titanium carbide, etc., the life thereof can be further maintained.

Next, a method of counting the number of filament heads in the stepwise falling state of the tension of the multifilament threaded body M at the time of filament cutting will be described.

The step-down state of tension at the time of filament cutting is processed in the order shown in the block diagram of FIG.

That is, after the tension sensor 4 detects the tension of the multifilament threaded body M, the tension meter amplifier 15 amplifies the detected signal and converts the detected signal into an analog signal with the A / D converter 16. Is converted into the microcomputer 17 and input.

The microcomputer 17 computes the signal change by an algorithm described later, calculates the number of filaments constituting the multifilament thread body M, and outputs the result to the display device 18.

Here, (15) to (18) are referred to as data processing section 5.

In general, when the multifilament thread body M is a synthetic fiber (nylon or polyester fiber), and the total denier is 70 d and the number of filaments is 20, the number of the coarse and the number of the filaments is small, a stepwise decrease in the tension during filament cutting The state (time change) becomes as shown in FIG.

In this case, since the filament cut of one piece is clearly identified, the number of filament heads can be accurately counted simply by counting the number of paragraphs.

However, when the filaments constituting the multifilament threaded body M are thinner and larger in number than in the above case, the time change in the tension drop of the multifilament threaded body M at the time of cutting the filament becomes as shown in FIG. Like the parts of (a) and (b), short-circuit change of tension occurs that the filament is estimated to be simultaneously cut at the same time.

In this case, even if the number of paragraphs is counted, the number of constituent filaments of the multifilament thread body M does not match.

For this reason, even if short-circuit change of tension occurs, even if short-circuit change of tension corresponding to one piece of filament occurs reliably as shown in Fig. 5 above, the following calculation equations are used for all cases. The number of constituent filaments is calculated using a microcomputer based on the gradation of the tension (time change) by rhythm.

The calculation algorithm is described below by taking the tension shorts y ₁ , y ₂ ,..., Y _m shown in FIG. 11 as an example.

I. The average value (x) of a short sequence (y ₁ , y ₂ ,..., Y _m ) is obtained.

That is, x is represented by the following formula.

Ⅱ. Next, the first average value (x) obtained in the range of 50 to 150%, that is, the range of 0.5x to 1.5x, is extracted from the preceding sequence (y ₁ , y ₂ ,..., Y _m ) , This is y ₁ , y ₂ ,… It is set as a, y _m sequence, and the average value X (referred to as a 2nd average value) is calculated | required.

That is, X is represented by the following formula.

By doing so, the second average value X is y ₁ , y ₂ ,... The average value of the tension short when two or more filaments are cut at the same time from the number of tension shorts of y _{n and} the tension short affected by the noise of the tension meter amplifier 15 is removed. Becomes

III. On the basis of the second average value X, the respective values of the paragraphs (y ₁ , y ₂ ,..., Y _n ) are each relative to x (from 0 to 0.5 times), (0.5 It is determined whether it is included in the range of more than 1.5 times and less than 1.5 times), (more than 1.5 times and less than 2.5 times), (more than 2.5 times and less than 3.5 times), and more than 3.5 times (more than 0 times and less than 0.5 times). For memory (Mo) (more than 0.5 times and less than 0.5 times), for cumulative memory (M ₁ ), for (more than 1.5 times and less than 2.5 times), for cumulative memory (M ₂ ) (for 2.5 times or more and less than 3.5 times) The cumulative memory M ₃ , (3.5 times or more) are accumulated in the cumulative memory M ₄ , respectively.

Ⅳ. Based on the cumulative memory M0 to M4 values, the number of constituent filaments N is calculated by the following equation and displayed on the display device 18.

N = 0.5 × (M ₀ inch) + (M ₁ inch) + 2 × (M ₂ inch) + 3 × (M ₃ inch)

In the calculation of N, if the M ₀ value is not 0, it includes a phenomenon that occurs when another single short-circuit is short-circuited in the middle of the preceding one short circuit. .

If the cumulative memory M ₄ value is not 0, the measurement at this time is regarded as an error, and only error display is performed without calculating the number of filaments (N).

Ⅴ. Next, in accordance with the display of the number of filaments N, the reliability of the N value is checked as follows, and it is displayed on the display device 18.

(Iii) When N = (M ₂ values), i.e., all tension shorts are within X (less than 0.5 times), this is the case where a tension short occurs for each filament, and the highest reliability is indicated [A]. .

(Ii) (M ₀ value) = 0, (M ₁ value) ≠ 0,

(M ₀ value) ≠ 0, (M ₃ value) ≠ 0,

2 x (M ₀ inch) <0.4 x N

In other words, when there is no rapid shortening phenomenon of another one, and there are no simultaneous cutting of three filaments, and two simultaneous cutting is 40% or less of the total number of filaments [A] is followed by [B] as the reliability.

(Iii) Other than the above (i) and (ii), since the reliability is inferior from them, [C] is displayed as the reliability.

The constituent filament main value N calculated and displayed in this manner can be evaluated as having high reliability (accuracy) of the count value when the reliability is [A] or [B].

In the case of reliability [C], since the reliability (accuracy) of the count value is low, it is preferable to measure again.

In addition, when the reliability [C] is increased, it may be an indicator of deterioration of the apparatus (mainly, deterioration of the blade or other deterioration of the drive part). Therefore, it is necessary to maintain the apparatus.

In the present embodiment, the alignment table 2 is vibrated so that the blade 3 is brought into contact with the multifilament threaded body M at a position near the alignment table 2 so that the vibration of the alignment table 2 is reduced. The filament is cut more effectively by increasing the relative speed with respect to the multifilament thread body M of the blade 3 by transmitting it to the multifilament thread body M, but not vibrating the alignment table 2. Even if the blade 3 is vibrated, the same effect can be obtained.

Moreover, the same effect can be acquired even if a blade is made into a circular thin plate instead of vibrating a blade, and it rotates at high speed.

Again, in the case of a material in which the kind of the multifilament threaded body M is melted at a high temperature as a method of cutting the filament, an object heated at a high temperature instead of a blade may be used as the cutting means, A laser beam can also be used as the filament cutting means.

Even when these various cutting means and a vibration system are used together, a better effect can be acquired.

The position at which the filament is to be cut also does not have to be near the alignment table 2 depending on the device used for cutting, and other positions, for example, in the case of a laser beam, are multiplied with the alignment table 2. The position where the filament thread body M is connected is also possible.

Moreover, although the structure of FIG. 7 is shown as an example of the holding apparatus of the multifilament threaded body M, it is not necessarily required to be this, and it is the compression used as a stationary body called a normal threaded body tensile tester or an elongation tester. The configuration using air and an air actuator may be applied.

Claims (11)

Pressurizing the threaded body to the alignment object by applying tension of the threaded body to the multifilament threaded body, and sequentially cutting each filament of the multifilament threaded body; A method of counting the number of filaments constituting a multifilament threaded body by sequentially performing a step of determining the number of constituent filaments by measuring the step-down state of tension of the filament threaded body. A pair of thread gripping apparatuses for holding a multifilament threading body provided through a required space, an alignment table for aligning the multifilament threading body under pressure by an appropriate tension between the pair of threading body gripping devices, and the alignment table Cutting means for sequentially cutting each filament constituting the multifilament thread body, the tension sensor for measuring the tension lowering state according to the cutting of the multi-filament thread body, and the tension sensor is stepped down the measured tension An apparatus for counting the number of constituent filaments of a multifilament thread structure having a data processing unit for determining the constituent filament number based on the data indicating the state. 3. An apparatus for counting the number of constituent filaments of a multifilament threaded body according to claim 2, further comprising a splitting apparatus provided with a friction roller for rubbing and splitting the multifilament threaded body. According to claim 3, further comprising a contact agent provided below the friction roller of the dispensing device, the contact agent for counting the number of constituent filaments of the multifilament thread body in sliding contact with the lower surface of the friction roller Device. The filament according to claim 3 or 4, further comprising a rotary driving body for rotating the electrode in the splitting device, and configured to transmit the rotation by externally rotating the rotary driving body to the friction roller. Device for counting numbers. An apparatus for counting the number of constituent filaments of a multifilament threaded body according to claim 5, further comprising adsorption means for adsorbing said roller by applying a magnetic force to said rotational driving body. 3. An apparatus for counting the number of constituent filaments of a multifilament threaded body according to claim 2, wherein said cutting means is a blade. According to claim 7, The vibration generating unit for imparting vibration or more than the natural vibration frequency of the tension sensor on the alignment table, and configured to contact the blade in the state in which the vibration is applied to the multi-filament thread of the alignment table A device for counting the number of filaments of the filament thread body. The constituent filament of the multifilament threaded body according to claim 7 or 8, further comprising a vibration generating unit for imparting a vibration of at least the natural vibration frequency of the tension sensor, and configured to impart vibration to the blade. Device for counting numbers. The number of constituent filaments of the multifilament threaded body according to claim 7, further comprising rotating means for moving the action position for cutting the multifilament threaded body by rotating the circular knife at appropriate intervals. Device. 3. An apparatus according to claim 2, wherein said cutting means counts the number of constituent filaments of a multifilament threaded body which is a laser beam.

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