JPH02288994A - Device for counting number of constituting filaments for multi-filament yarn body - Google Patents

Abstract

PURPOSE:To apply a device even to a multi-filament yarn body, whose cross section is formed in a strange shape, by determining the number of constituting filaments from data showing the falling state by stages of tension measured by a tension sensor. CONSTITUTION:A yarn body M is set in contact with the surface of a friction roller 52 in a filament separator P and rubbed and afterwards, the yarn body M is moved to a counter Q side. Then, the both ends of the yarn body are clamped by clamp parts 1 and 1' and the clamp parts 1 and 1' fall down. Next, when the yarn body M is press-contacted to an arrangement stand 2 by the tension of the yarn body M itself, the distribution of the cross section is flatly arranged in one layer. In such a state, the multi-filament yarn body M is successively cut while measuring the tension of the yarn body M by a tension sensor 4. Accordingly, a phenomenon that the tension falls down by stages with the cut of the single yarn filament is measured. Thus, the number of filaments to constitute the yarn body is counted.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an apparatus for counting the number of filaments constituting a multifilament thread body composed of a plurality of filaments I-.

[Conventional technology]

As a method for counting the number of filaments constituting a multifilament thread, the following method has been put into practical use.

■ The sound of the work rubs the multifilament thread with an object such as chalk, charges each filament of the multifilament thread, and the Coulomb force generated by the charges of the same polarity causes each filament to reciprocate. The number of fibers is detected by spraying the fibers onto a board covered with black velvet cloth and visually counting the fibers.

■ Japanese Patent Publication No. 52-28909 invented by the present inventors
By the method described in the publication, a circular cross-sectional shape is obtained. & Synthetic multifilament yarns are aligned on an alignment table and irradiated with light.The light that passes through the filaments is collected by the condensing action of the filament with a circular cross section, producing a band-shaped bright line, which can be optically analyzed. , the number of components is detected by counting electronically.

[Problem that the invention seeks to solve]

Method (2) above is inefficient because it requires manual labor and visual inspection by the operator, and in some cases, not all the filaments are completely separated. It is often counted as the number of samples (with excess or deficiency), and conversely, there is a high probability that a sample with a truly abnormal number (with excess or deficiency) will be overlooked as normal, resulting in poor reliability.

The method (2) described in Japanese Patent Publication No. 52-28908, which was invented by the present inventors in an attempt to improve this problem, is suitable for this method because at the time of the invention, synthetic yarns whose filaments had a circular cross section were mainly being produced. It was a method that However, in recent years, with the advancement of technology in the synthetic fiber industry and the accompanying increase in quality and added value, the production ratio of so-called irregular cross-section yarns, in which the cross-section of each filament is not a circular cross-section such as a triangle, φ star, or hexagon, has decreased. The number of filaments is increasing, and the method described in Japanese Patent Publication No. 52-28909 counts the number of filaments optically and electronically based on the light-condensing action of a filament with a circular cross section. With the device used, it was not possible to count the number of filaments constituting these multifilament thread bodies with irregular cross-sectional shapes.

Therefore, for irregular cross-section multifilament threads, we have no choice but to rely again on the original manual and visual counting methods, although they are inefficient and inaccurate.

The present invention has been made in view of these circumstances, and its purpose is to increase the number of constituent filaments that can be applied not only to conventional circular cross-section multifilament yarns but also to irregular cross-section multifilament yarns. The purpose of this invention is to provide a counting device.

[Means for solving problems]

In order to achieve the above object, the present invention provides that when tensile strain is applied to a multifilament thread, the stress or tension generated in the multifilament thread is reduced by the cross-sectional area of the multifilament thread (multifilament thread This method was developed by focusing on the fact that the cross-sectional area of each single filament forming the body is proportional to the number of filaments (when the cross-sectional area is approximately the same), and has the following configuration. That is, it is a device used when counting the number of filaments constituting a multifilament yarn, and includes a separating device equipped with a friction roller that separates the multifilament yarn by rubbing the multifilament yarn on the upper surface, and a separating device that separates the filaments by dividing the multifilament yarn. a pair of gripping parts provided through the gripping parts to nip the multifilament threads; an alignment table located between the two gripping parts and aligning the multifilament threads while press-contacting them under appropriate tension; A cutting means that is installed near the stand and sequentially cuts the constituent filaments of the multifilament thread; a tension sensor that measures the state of tension drop accompanying the cutting of the multifilament thread; and a tension sensor that measures the tension that is measured by the tension sensor. The present invention is characterized by comprising a counting device including a data processing section that determines the number of constituent filaments from data indicating a state of gradual descent.

[Effect]

1. At the position shown by the broken line in FIG. 1(a), the multifilament thread body (M) is separated as shown in FIG. 1(c) using the splitting device CP).
After contacting and rubbing against the surface of the friction roller (52),
As shown by the solid line in FIG. 1(a), the multifilament thread body (M) is transferred to the counting device (Q) side, and both ends of the thread body are gripped by the gripping parts (1) and (15), and then gripped. Part (1)
When the multifilament thread body (M) is pressed against the alignment table (2) by the tension of the multifilament thread body (M) itself, as shown in (lowering 15 and first rotation), under normal conditions, The single filaments (F) of the multifilament yarn body (M) are arranged so that the entire outer periphery of the cross section is distributed in a nearly circular shape as shown in Figure 3, and by pressure welding, the cross-sectional distribution is changed as shown in Figure 4. The filaments are arranged in a flat manner, and the filaments are arranged in almost a single layer, with some two-layered filaments remaining. In this state, while measuring the tension of the multifilament thread body (M) with the tension sensor (4), from one side of the filament row, the cutter (3) shown in the enlarged plan view of the filament contact part of the alignment table in Figure 2. , or by contacting with a high-temperature heating object instead of this knife (3), or by irradiating the filament with a laser beam and cutting it sequentially, the percentage shown in Figure 5.
A phenomenon in which the tension generated in the multifilament filament cM) is gradually lowered as the single filament 1-(F) is cut is measured.

The measurement results of this stepwise decreasing state of tension are as follows. ,・ is the above-mentioned pull (
Before the IJ tester breaks, a knife or a high-temperature heating object is brought into contact with the blade or a high-temperature heated object.
The falling state of the tension of the filament thread body can be measured at intervals of time flJJ, such as J. Incidentally, the fracture by a tensile tester,
Alternatively, if the tension is lowered by forcibly cutting the filament by bringing a blade or a high-temperature heated object into contact with it before breaking with a tensile testing machine, even if the tension sensor has a high response speed, many threads may be Only the phenomenon of a lump-sum decrease in tension due to cutting several blocks at once is measured; however, as in the device of the present invention, - a gradual decrease in tension due to sequential cutting of a single filament is measured; No phenomena observed.

When the device of the present invention is applied in this manner, as shown in FIG. The number can be easily counted.

〔Example〕

First, a first example of the device according to the present invention will be described.
The explanation will be based on FIGS. (a), (b), and (C). That is, the device of this embodiment is a device used when counting the number of constituent filaments of a multifilament yarn body CM), and is a rotary drive body (50) that actively rotates.

(51); and a friction roller (52) which is removably provided in circumscribed contact with the rotary drive bodies (50) and (51) and separates the multifilament thread (M) by rubbing it on its upper surface.
The friction roller (52) is located below the friction roller (52).
A contact body (6) provided so as to be in contact with the lower surface of the
3) and a fiber splitting device (P) comprising a fiber splitting device (P) and a fiber splitting device (P) provided at a required interval to nip the multifilament thread body (M).
a set of gripping parts (1), (1'), both gripping parts (1),
d> and the multifilament thread body (
M) is arranged on an alignment table (2) while being pressed under appropriate tension.
), a cutting means (3) provided in the vicinity of the alignment table (2) for successively cutting the constituent filaments of the multifilament thread (M), and
Tension sensor (4) that measures the state of tension drop due to cutting.
and a counting device (Q) equipped with a data processing unit (5) that determines the number of constituent filaments based on data indicating the state of gradual decrease in tension measured by the tension sensor (4). .

In this example, the multifilament filament (M) is
As shown in Fig. 1(a), before nipping in the gripping parts (1) and (1'), the multifilament thread body (M) is moved in the left and right direction on the broken line in the splitting device (P). Lightly contact the friction roller (52) while moving the friction roller (52).
A pretreatment is performed in which the fibers are separated into single filaments by friction between the fibers and the fibers.

FIG. 1(c) is an explanatory diagram (partially omitted cross-sectional view) showing the configuration of the fiber splitting device (P), and FIG. 12 is a plan view of the same device with the cover (54) removed.

As shown in FIG. 12, the end (52) of the friction roller (52)
1), (522) are made of ferromagnetic material such as mild steel or iron alloy, and stepped discs (501), (502), (511), (
512). Also, this stepped disc (5
01), (602), (511).

(512) have rotating shafts (512) each made of ferromagnetic material.
504), (514), and the rotating shaft (5
04), (514) are bearings (505), (506)
, (515) and (516), and are driven by a motor (60) with a reducer and a timing belt type transmission (61), (62), so that they rotate in the same direction and at the same speed. It has become.

Further, the rotating shafts (504) and (514) are annular solenoid coils (503) and (5
15), and the solenoid coil (503),
When (513) is energized, it is excited with the north pole pointing in the direction of the arrow in the figure (FIG. 12).

With this configuration, when the motor (60) is rotated while energizing the solenoid coils (603) and (61g) serving as the suction means, the friction roller (52)
The ends (521) and (522) of the stepped discs (501), (502), (511) are in contact and supported, respectively.
(512) and rotates as it is properly attracted by magnetic force.

Also, stepped discs (501), (502).

((511), (512)) have steps as shown in Fig. 12, and each is arranged with the lower step side (that is, the side with a slightly smaller diameter) facing inward, so that the friction roller (52) passes through its ends (521), (522) to the stepped discs (601), (502), ((51
1), (512)) is regulated by the inner surface of the upper stage side (larger diameter side) so that it will not shift in the vertical direction (rotation axis direction) or pop out during 12 rotations.

Such stepped discs (501), (502), ((
511), (612)) and rotation axis (504), (
(514))), a rotary drive body (60), (
The friction roller (52) rotates due to the action of (51)), so when the multifilament yarn body (M) is brought into light contact with the center part (520) of the friction roller (52) and rubbed, the multifilament yarn body The body (M) has the same polarity generated by the friction with the friction roller (52) as the antistatic or filament-focusing oil agent adhering to its surface is transferred to the surface of the friction roller (52). The static electricity charges each filament, which reduces the cohesiveness of the multifilament thread (M), and the tension decreases stepwise when the filament is cut using the counting device (Q) shown in Figure 1). In this phenomenon, it is less likely that several filaments will be cut at the same time. This reduction in simultaneous cutting improves the reliability of counting the number of constituent filaments, which will be described later.

A friction roller (52) is used to make electrostatic charging by friction, which is one of the functions of the fiber separating device (P), more effective.
The material of the central part (520) is various ceramics such as alumina porcelain, titanium oxide porcelain, and machinable ceramics (porcelain containing mica), various plastic materials such as polyethylene, polypropylene, and Teflon, or paper, wool felt, etc. Several fiber material laminates are prepared and selected (replaced) as appropriate depending on the type of multifilament thread (M). At this time, the friction roller (
52), the aforementioned magnetic 'rg''
A solenoid coil (50
3).

(, 513), the friction roller (52) can be easily replaced. In addition, a friction roller (52
) are magnetically attracted with a relatively weak force, so even if your fingers are caught between the friction roller (52) and the cover (54), the friction roller (52) will lift up and will not rotate. This method also serves as a safety measure.

Next, as shown in Fig. 1 (Gt), the fiber splitting device of this embodiment (
P) below the friction roller (52) ((contact body (53)
), which is slidably and lightly pressed against the lower surface of the central portion (620) of the friction roller (52) by a spring (53a). This contact body (53) is connected to the friction roller (52) from the multifilament strip (M).
) to wipe and remove the oil transferred to the surface of the center (52G) of the friction roller (52), and to more effectively transfer the oil to the surface of the center (52G) of the friction roller (52) than the multifilament filament (M). In order to achieve this, a powder with high oil adsorption ability is applied to the surface. The former (oil removal)
If only the above effect is expected, use a laminate of fiber materials such as paper or cloth as the material of the contact body (53), and if both effects (oil removal and powder application) are desired, use calcium carbonate, marble, etc. Use powder such as graphite that has been kneaded and dried. Which of these is used is appropriately selected depending on the material of the multifilament yarn body (M) to be counted and the number of filaments, and the contact body (53) is replaced at the same time as the friction roller (52) is replaced.

Transfer the pretreated multifilament thread body (M) to the position shown by the solid line in Fig. 1(a), and grasp its both ends as shown in Fig. 6. do.

First, the multifilament thread is attached to the lower thread nip member (7) provided on the upper part of the left movable arm (6) and the lower thread nip member (7') provided on the upper part of the right movable arm (me). (M).Next, while pulling the multifilament thread (M) with both hands, as shown in Figure 7 (
As shown in the side view of the gripping part (1), the gripping part (15 side is omitted), the left and right movable arms (6), (e> working end (19),
(19') is lowered, and its working ends (19), (19
The upper yarn nip members (
8), (8) and the lower yarn nip member (7), (7).
'l and press the multifilament filament (M).
Hold it firmly enough so that it does not slip even with the tension that will be generated later. At this time, if the multifilament thread (M) is an undrawn synthetic thread, apply sufficient tension with both hands.
After being stretched to a state similar to a normal drawn yarn (drawn to several times the length of the initial state), it is held.

FIG. 7 shows a side view of an example of the gripping part (1) used in this example. The thread gripping device (9) is connected to the movable arm (8) by a support shaft (10), and moves about the support shaft (1o) as a fulcrum. Upper yarn nip member (8)
A U-shaped spring (11) is attached to the opposite side of the body, and generates a force that presses the upper yarn nip member (8) downward, but does not force the multifilament yarn body (M). Until it is installed, it is held down by the movable rod (12), and the space between the lower yarn nip member (7) and the upper yarn nip member (8) is open. The lower yarn nip member (7) and the upper yarn nip member (8) are made of a rubber-like material with high friction and high elasticity in order to sufficiently grip the multifilament yarn body (M) without slipping. It is made up of. In this state, hold the multifilament thread (M) between both nip members (7) and (8).
When the movable rod (12) is pulled up after being inserted between the two, the reaction force of the U-shaped spring (11) pushes down the upper yarn nip member (8) and creates a space between it and the lower yarn nip member (7). grip the multifilament thread body (M).

After gripping the multifilament thread body (M) between the left and right movable arms (6) and (6') in this way, the left and right gripping parts (1) and (1') are moved between the left and right movable arms (6) and (6'). Lower the side movable arms (6) and (B'), respectively. This state is shown in FIG.

Next, the alignment table (2) has a cross-sectional shape that is asymmetrical as shown in FIG.
), that is, in this example, the left side of the curved surface (
13) has a large curvature, and the curved surface (14) on the side closer to the cutter (3), that is, on the right side, has a small curvature.

This is when cutting the filament with the knife (3).
This is because if the cutting position is closer to the part where the multifilament filament (M) and the alignment table (2) are in pressure contact, the gradual decrease in tension can be more reliably realized.

In addition, the lower part of the alignment table (2) (referred to as the vibration generating part (20))
As shown in Fig. 9, an ultrasonic transducer (2b), (2
c) is provided via the electrode (2d), and the electrode (2d) is provided via the electrode (2d).
A high frequency voltage is applied between d) and the sorting table (2) and the end (2a) which is electrically connected to the same potential, thereby causing the sorting table (2) to vibrate ultrasonically. ing.

Furthermore, in the method of vibrating the sorting table (2), we have described a method in which the vibration frequency exceeds the range of audible frequencies (28KH2 is adopted in this embodiment). The vibration frequency does not necessarily have to be an ultrasonic wave, but a frequency band that can sufficiently respond to the stepwise decreasing speed of the tension of the multifilament thread body (M), that is, the natural vibration frequency of the tension sensor (4) (this implementation In the example, about I
It is also possible to use a slightly higher vibration frequency (approximately 1.5 KHz or higher in this embodiment) than the above (in this example, approximately 1.5 KHz), and examples of such devices are shown in FIGS. 13(a) and 13(b).

Figure 13(a) shows the alignment table (
2) shows a side view of the vibration generator (20) of the alignment table (2).
) consists of a cantilever-shaped bar, hereinafter referred to as the alignment table vibrating piece (21)), Yj in this figure.
-Y2 direction view is shown in the figure (b). Figure 13 (a
), the alignment table vibrating piece (21) is fixed to the right side of the magnetic core (211) by a holding metal fitting (212) and a screw (213). The alignment table vibrating piece (21) has a rectangular cross section in the range 81 in the figure, and the curvature on the left side is large and the curvature on the right side is small as shown in the 13th rotation in the range S2 in Fig. 8. It has the same cross-sectional shape as the top of the alignment table (2) shown. The alignment table vibrating piece (21) is made of a magnetic material and a metal that has high wear resistance with the multifilament thread (M) (for example, tungsten steel, chrome steel, high carbon steel), or It is made by coating the surface of metal with titanium nitride, titanium carbide, etc.

The magnetic core (211) is a laminate of silicon steel plates or soft ferrite (a ferrite with small hysteresis in magnetization characteristics and used as a magnetic core for alternating magnetic fields, for example, containing iron oxide as a main component, and compounds of manganese and zinc, Alternatively, it is made of ferrite mixed with a nickel or zinc compound and fired, and is excited by an excitation coil (214). The excitation coil (214) amplifies the oscillation output of the variable frequency oscillator (21B) with the amplifier (218) using the method shown in FIG. , 2 sin ωt for the magnetic flux φ・−= which has the alignment table vibrating piece (21) and the air gap (210) as a loop.
generates a magnetic flux of Magnetic g (21
The suction force generated between 1) and the alignment table vibrating piece (21) is air
Since it is proportional to the square of east φ, the attraction force f during this period is f=Kiφ2 =Ks (Kg sinωt)” = Kg (Kt)” sin”ωt1 1 .

=Ka(Kg)” (-10-51n(2ωt-T))=
-(Kg)'KI(1+5in(2ωt-7))Here, if 4=L(K4)'Ks, then f=4(1
+5in(2ωt-7)), which is 2 of the frequency of the alternating current.
It produces a suction bow force that vibrates twice as much. For this reason, the excitation coil (
The frequency of the AC power supply connected to the alignment table vibrating piece (
By setting the natural frequency to 1/2 of the natural frequency of 21), the alignment table vibrating piece (21) resonates and vibrates greatly.

The excitation circuit shown in FIG. 14 changes the original frequency of the alternating current applied to the excitation coil (214) to a variable frequency oscillator (216).
) built in! By manually adjusting the variable resistor (217), the natural frequency of the alignment table vibrating piece (21) can be reduced to 1/2.
This is a method in which the oscillation is tuned to , and the power is amplified by an amplifier (218) to supply excitation power to the excitation coil (214).

Another vibration generation method shown in FIG. 15 is to use a part of the vibrating part of the sorting table vibrating piece (21) (the part to which the sorting table vibrating piece (21) is fixed as shown in FIG. 15(a)). Attach a resistance gauze strain gauge (2i9) to a close position where the mechanical strain to be detected is desired to be large.
l) detects the deviation of the alignment table vibrating piece (21), inputs it to the amplifier (21B), amplifies it, and sends it to the excitation coil (214).
) by supplying an excitation current to the alignment table vibrating piece (21)
The deviation of the resistance wire strain gauge (219) is again detected by the resistance wire strain gauge (219), and if the mechanical feedback loop (215) shown by the dotted line in FIG. 15 is included, the resistance wire strain gauge (219)
19) - → Amplifier (21&) → Excitation coil (20) → Resistance wire strain gauge (219)... A series of loops are formed, and the frequency of the loop itself with the highest gain, that is, the alignment table vibrating piece (21), is formed. It oscillates at a natural vibration frequency.

In this case, it is necessary to set the electrical phase relationship between the input and output of the amplifier (218) and its amplification factor appropriately. For example, the phase relationship is set in the direction in which positive feedback is applied, and the amplification factor is set in the direction of the alignment table vibrating element ( In the natural vibration frequency band 21), the total gain of the loop including the mechanical feedback loop (215) shown by the dotted line is set to be slightly above 1. Further, the output of the amplifier (218) is DC-superimposed with a voltage e or θ so that the polarity is not reversed, and electrical oscillation is performed at one times the natural frequency of the alignment table vibrating piece (21). In the excitation method shown in FIG. 15, the alignment table vibrating piece (21
) automatically tracks and oscillates, so even if the natural frequency of the alignment table vibrating piece (21) changes due to temperature or other factors, it will always continue to oscillate at a frequency that follows it and align The vibration amplitude of the table vibrating piece (21) can be kept stable.

The method uses magnetic absorption force to vibrate the alignment table vibrating piece (21
), but another method is to apply vibration force using an electrostrictive element (220), as shown in FIG. 18. In this case, barium titanate (BaTi0i
), an electrostrictive element (22G) made of ceramics such as lead titanate (PbTiOs) that expands and contracts in the length direction by applying a voltage, Figures 14 and 15 are attached to the lower side with an adhesive such as epoxy resin or phenol resin, and are connected to the lead wires (221) + (222) connected to the double-sided electrodes of the electrostrictive element (220). By applying the output voltage of the amplifier (218) (not shown), the electrostrictive element (220) expands and contracts in the direction of the arrow in the figure (horizontal direction), and the alignment table vibrating piece (21)
continues to vibrate in the same way as with magnetic methods. (Here, the output of the amplifier (218) was a relatively low voltage and a large current value in the case of the magnetic method described above, but in the case of this method using an electrostrictive element, the output was a high voltage and a large current value. It is a small current output. Also, the frequency of this electrical output is the same as that of the alignment table vibrating piece (21) including the electrostrictive element (220).
) in a 1:1 correspondence with the natural frequency. )3
゜In this case, as the excitation circuit, the circuits in which the excitation coil (214) in FIGS. 14 and 15 are replaced with an electrostrictive element (22G) can be applied, respectively.
0) The natural frequency (natural frequency including the electrostrictive element (220)) of the alignment table vibrating piece (21) tends to change as its own mechanical properties are affected by temperature. The method shown in Figure 15, which uses tracking and excitation, was suitable.

Next, a method will be described in which the left and right movable arms (6), (6') are lowered to press the multifilament thread (M) into contact with the alignment table (2). For this method, one of the following methods ■ to ■ is selected in advance depending on the type of multifilament thread body (M), and both the left and right movable arms (6),
(6') is set in a controller (not shown) that drives the controller.

■ Both the left and right movable arms (6) and (6>) are lowered at the same speed, and when the tension (hereinafter abbreviated as set tension) is reached, which is preset according to the material of the multifilament thread (M) and the torque denier value. How to stop it.

■ At first, only the left movable arm (6) starts descending first, then the right movable arm (6') starts descending, and both movable arms (6) and (6') move at the same speed. When the multifilament filament (M) reaches the set tension, both the left and right movable arms (6) are lowered.

(6) A method of stopping both.

■ A method in which the left and right movable arms (6) and (65) start descending at the same time at different speeds, and when the set tension is reached, both the left and right movable arms (6) and (8') are stopped.

■ After ■, ■, or ■ above, go further to the left side of the movable arm (
6) Method of continuing to descend only at a slow speed.

Among these four methods, if the number of constituent filaments is small, for example, 10 or less, the method of method Select this because you can obtain the phenomenon.

However, if the number of constituent filaments is larger than that,
Try the method (1) or (2) above, and select the one that provides statistically higher counting reliability, which will be described later.

In addition, in the case of a type of multifilament thread material that has a large stress relaxation (a phenomenon in which the tension gradually decreases when the tension is maintained), after carrying out the method of Only (6) is selected and set to the method (2) above, which involves lowering at a slow speed, to reduce the decrease in tension due to stress relaxation.

In this case, the reason why only the left movable arm (6) is lowered at a slow speed is because when the right movable arm (6') located near the tension sensor (4) is lowered, the movable arm (6') is driven. This measure was taken to prevent (avoid) this problem since the vibration of the pulse motor (not shown) used is transmitted to the tension sensor (4), making accurate tension measurement impossible.

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

When the multifilament thread (M) is first set in the state shown in FIG. 6, if the multifilament thread (M) even slightly touches the cutter (3), the filament will break. Therefore, in the state shown in FIG. 6, the cutter (3) cannot be retracted to the rear. Next, grasp the multifilament thread body (M), lower the left and right movable arms (6), (6), and move the blade (3) forward in the state shown in Figure 1 to sequentially cut the constituent single filaments. However, if the forward speed of the blade (3) is fast when cutting the filament, the filament will be cut almost all at once, and the tension fluctuations will show that each filament is cut one by one in an orderly manner, as shown in Figure 5. It will not be a gradual decline as it could be. For this reason, a photoelectric sensor (both not shown) is attached to the drive arm of the cutter (3) to detect the multifilament thread (M), and the cutter (3) is connected to the multifilament thread (M).
A method is adopted in which the filaments are sequentially cut by bringing the blade (3) close to the filament at high speed until just before the blade (3), and then reducing the speed of the blade (3) to a very slow speed so that the blade (5) and the multifilament thread body (M) come into contact with each other. In this example, the speed of the blade (3) when cutting the filament is 0.02 to 0.5 mm/
A pulse motor (not shown) is used to drive the cutter (3), and a multifilament thread (
M) is set in advance so that it moves slowly when the filaments are thin and there are many, and fast when the filaments are thick and there are few.

This cutter (3) is specifically a circular cutter, and its rotary means (30) will be explained below with reference to FIG. 17 (a> and the same).

FIG. 17(a) is a side view of the peripheral part of the knife (3),
A partial sectional view of this figure is shown in FIG. 17 Q:1).

Here, the cutter (3) is attached to a rotatably provided attachment shaft (312) passing through the back-and-forth moving arm (311), and is connected to the A gear (313) via this. A B gear (314) meshes with this human gear (313), and when the B gear (310) rotates, the cutter (3) also rotates.

Also, a C gear (415) is concentrically connected to the B gear (314), and a pawl spring (316) is attached to this C gear (315).
) are in contact. This pawl spring (316) is shown in Fig. 17 (
With the structure shown in a), it is fixed to the back and forth moving arm (311) with a stopper (317).

With this configuration, after cutting the multifilament thread body (M) with the blade (3) at the position shown by the dashed line in FIG. 17(a), the back and forth moving arm (111
) moves backward (in the direction opposite to the arrow in the figure), and the back of the pawl spring (316) comes into contact with the rond (319) provided on the board (318) a little before returning to the rearmost position. As a result, the pawl spring (31B) moved relatively in the direction shown by the arrow in the figure, and the C gear (315) was moved counterclockwise by one tooth at the toe portion of the pawl spring (316). After that, the back and forth moving arm (311) reaches the rearmost part and stops. This operation causes the A gear (313) and the cutter (3
) rotates clockwise by the angle θ degrees below.

Then, the rotation angle θ is as follows, and from this, the number of reciprocations N1 of the back and forth moving arm (311) for one rotation of the cutter (3) by 560 degrees is calculated as follows.

Therefore, the next time the forward and backward moving arm (311) moves forward to cut the multifilament yarn body (M) with the blade (3), the blade (3) and the multifilament yarn body are placed at a different position than the previous time. The bodies (M) are in contact and the multifilament thread body (M) can be cut sharply with always a new cutting edge (working position). In this way, the forward and backward moving arm (311
) moves back and forth, the blade (3) rotates by θ degrees. At this time, A gear (313), B gear (314), C gear (3
15) are each set to a separate prime value (in this example, A
Gear (313) has 31 teeth, B gear (314) has 29 teeth,
When the C gear (315) is set to S7 teeth), the cutter (3) becomes 1
Even if it is rotated, the cutting action position will not return to its original position. As a result of this example, the value of N1 is 0.56.
A fraction of 17... is generated, and even if the blade (3) rotates 360 degrees/one time, it returns to a position different from its initial position. Therefore, in order for the N1 to become an integer value and return to the initial position, the blade (3) must rotate by a number of 2s, which is the denominator of the fraction of the N1 value, that is, the number of teeth of the B gear (314). It will return to the starting position again. The number of reciprocations Nrst of the back and forth moving arm (311) until it is reset is calculated as follows.
It comes into contact with the multifilament filament (M) at the position divided into 7 and cuts it.

As a result, since the blade (3) cuts the multifilament thread (M) using almost the entire circumference on average, only a part of the blade (3) is used fixedly each time to cut the multifilament thread (M). Knife (5) compared to cutting (M)
could significantly extend the lifespan of

In addition to this method, by coating the cutter (3) with a highly hard material such as titanium nitride or titanium carbide, the life of the cutter (3) can be further extended.

Next, a method of counting the number of filaments based on the gradual lowering of the tension of the multifilament (2)/filament body (M) during filament cutting will be described.

The gradual lowering of tension during filament cutting is performed in the order shown in the block diagram of FIG.

That is, the multifilament thread body (
After detecting the tension of
Convert the analog signal into a digital signal and input it to the microcomputer (17). The microcomputer (17) uses an algorithm to be described later to process the signal name and generate a multifilament filament (M
) is calculated, and the result is output to the display device (18). Here, from (15) to (18
) is called the data processing section (5).

Normally, when the multifilament thread (M) is a synthetic fiber (nylon or polyester fiber) and is thick and has a small number of filaments, such as a total denier of 70d and 20 or less filaments, when cutting the filament The gradual lowering of the tension (change over time) is as shown in FIG. In this case, since each filament cut can be clearly identified, the number of filaments can be accurately counted simply by counting the number of stages.

However, if the filaments constituting the multifilament thread (M') are thinner and larger in number than in the above case,
Multifilament thread body (M) when filament is cut
The time change of the decrease in tension is shown in FIG. 11, and as shown in parts (a) and (b) of this figure, a gradual change in tension occurs, which is presumed to be caused by several filaments being approximately cut at the same time. In this case, even if the number of paragraphs is counted, it does not match the number of filaments constituting the multifilament thread body (M). For this reason, the following calculations are performed for all cases, including cases where such step changes in tension occur and cases where step changes in tension corresponding to each filament occur reliably as shown in Figure 5 above. The number of constituent filaments is calculated using a microcomputer based on the stepwise decrease (time change) in tension using an algorithm.

Tension paragraph Vt *'#... as shown in Fig. 11
The calculation algorithm will be explained below using Yn as an example.

[Calculate the average value X (referred to as the primary average value) of the first paragraph number sequence yl, yt...yn. That is, X is expressed by the following formula.

1st average value = '/1+ Y Goose A--== ynL
50 to 15 for the second average value X found next.
Those in the range of 0%, that is, in the range of 0.5x to 1.5x are extracted from the previous sequence yt+Vt, . . . Yn, and are converted into Y+, Y2.・・・・・・・・・Ym
A numerical sequence is obtained, and its average value X (referred to as the second average value) is determined.

That is, X is expressed by the following formula.

2nd average value = "1 + Yl 1--Ym By doing this, the 2nd average value X becomes Yl, 'It
......Tension stage in the middle of the tension stage number sequence of Vn, tension stage when two or more filaments are cut at the same time, and tension stage affected by the noise of the tension meter amplifier (15) This is the average value excluding both.

■, Based on this second average value X, paragraph number sequence y1゜y2
．．・・・・・・・・・The respective values for each term of Yn are
(0 times or more and less than 0.5 times), (045 times or more and less than 1.5 times), (1.5 times or more and less than 2.5 times), (2
, 5 times or more and less than 3.5 times), (5,5 times or more), and (0 times or more and less than 0.5 times).
The items are stored in the cumulative memory M, and the items (0.5 times or more and less than 1.5 times) are stored in the cumulative memory M1.
．． (Less than 5 times) is the cumulative memory M! , (2.5 times or more and less than 3.6 times) is the cumulative memory M, (1
6 times or more), the respective judgment counts are accumulated in the accumulation memory M4.

(2) The number N of constituent filaments is calculated using the following formula based on the cumulative memory value (Mo to M4), and this is displayed on the display device (18).

N = Q, 5 X (M (1 value) + (Mt value) + 2X (
Mt value) + 5X (Mt value) I In this calculation of N, M,
If the value is not 0, it includes a phenomenon that occurs when a previous paragraph rapidly stops in the middle of another paragraph, and the resulting fractions of 0 and 5 are rounded down.

Further, if the cumulative memory M4 value is not 0, the current measurement is treated as an error, and the number of filaments N is not calculated, but only an error display is performed.

79 Next, in addition to displaying the number of filaments N above,
The reliability of the values is checked as described below and displayed on the display device (18).

(1) When N = (Mt value), that is, in the range of (0.5 times or more and less than 1.5 times) all tension stage number sequences, this is the case where a tension stage is generated for each filament. , and [A] is displayed because it has the highest reliability.

(It) (Mo value) = 0, (Mt value)? Q, (Mt
value) NOl (Mt value) = 0 and 2 X (Mt value) < 0.4 If there is no book cutting at the same time and the cutting rate when two filaments are cut is less than 40% of the total number of filaments (A,,)
(B) is displayed as the second highest reliability.

(111) Other than the above (1) and (1+), the reliability is lower than those, so (0) is displayed as the reliability.

If the reliability value of the constituent filament number N calculated and displayed in this way is (A) or CB), the reliability (accuracy) of the counted value can be evaluated as being high. In the case of reliability (C), it is desirable to measure again because the reliability (accuracy) of the counted value is low. Also, reliability (
0), it is an indicator of equipment deterioration (mainly blade deterioration, but also deterioration of other parts), so it is necessary to maintain the equipment. Ru.

In this example, vibration is applied to the sorting table (2), and the multifilament thread (M) is placed near the sorting table (2).
), the vibration of the alignment table (2) is transmitted to the multifilament thread body (M), which increases the relative speed with the knife (3) and cuts the filament. It was done more effectively.

From this, it is possible to avoid vibrations on the alignment table (2) and to
) can also produce the same effect. Furthermore, instead of vibrating the blade, the same effect can be obtained by using a circular thin plate as the blade and rotating it at high speed.

Furthermore, as a method for cutting the filament, if the multifilament thread body (M) is made of a material that melts at high temperatures, the cutting means may be heated to a high temperature instead of a knife, or a non-contact method may be used. A laser beam can also be used as a filament cutting method. Moreover, even more effects can be obtained by using these methods together with the vibration method.

Depending on the device used for cutting, the filament cutting position does not necessarily need to be near the alignment table (2); for example, in the case of a laser beam, the position where the filament is cut may be between the alignment table (2) and the multifilament yarn. It is also possible at a position where the body (M) is in contact with the body (M).

Although the method shown in Fig. 7 is shown as an example of a gripping device for the multifilament yarn (M), it is not necessarily necessary to use this type of gripping device. This may be replaced by a method using compressed air and an air actuator, which is used in a device called a tester.

〔Effect of the invention〕

By carrying out the present invention, it is possible to count not only multifilament threads with a circular cross section, but also multifilament threads with irregular cross sections, which could not be counted with conventional devices, or even those with a circular cross section but with pocked surfaces. It is now possible to count the number of constituent filaments of multifilament threads, such as acrylic multifilament threads obtained by wet spinning, which cannot be counted using optical methods. .

Furthermore, according to the present invention, the number of filaments constituting the various multifilament thread bodies described in Section 2 can be automatically and accurately counted, which improves work efficiency in the filament inspection process and significantly saves labor (labor savings). 5.

Historically, the dispensing device, which is part of the device of the present invention, has a
The multi-filament yarn body of if is rubbed and separated into single filament r position, so the counting device comes out.
7-4-ru' knee 7, i-lame, n-h number are reliable (accurate 1 (L) is high?) 3, No. Increasing body temperature, policy 1. Production of Bethel's soy and mento yarn 1, ~IG ('A single layer (2 (1, the number of filaments is increasing) yarn □...-1 knitting', scale, t relo if
!・Probability 7.3 to make the send out β 71, -・”C
Defective products can be reduced by 1 ('fr');
The device of the present invention can be a useful measuring instrument for quality control and production control.

[Brief explanation of drawings]

FIGS. 1(a), (b), and (c) are explanatory diagrams showing an example of an apparatus for carrying out the present invention, in which (a> is a plan view showing the overall configuration, and cb> is an explanatory diagram of a counting device. , (C) is an explanatory diagram of the fiber splitting device, FIG. 2 is an enlarged plan view of the filament contact area on the alignment table, FIG. 3 is a cross-sectional view of the multifilament yarn, and FIG. 4 is a single filament. Alignment state:′,?
Figure 5 is a chart showing the gradual decrease in the tension of the filament when the single filament is successively cut, and Figure 6 shows the state in which the multifilament yarn is placed on the grip. Figure 8 is an enlarged cross-sectional view of the filament contact part of the alignment table, Figure 8 is an explanatory diagram of the vibration generating part provided at the bottom of the alignment table, and Figure 8 is a side view of the gripping part. 1
(Figure 0 is a system block diagram of the data processing unit, Figure 11 is a tension drop chart of the filament including a pattern in which multiple single filaments are cut at the same time, and Figure 12 is the cover of the splitting device.) Top view of the removed state, Figure 13), Φ
) is an explanatory diagram of the vibration generating part of the sorting table of another embodiment;
) is its side view, and (b) is its Yl-Y! 14 is a block diagram of a vibration generation method corresponding to FIG. 13, FIG. 15 is a block diagram of another vibration generation method,
Figure 16 is an explanatory diagram of other vibration generation methods, Figure 1T (
a) and (b) are explanatory diagrams of the rotating means of the circular blade;
a) is a side view showing its configuration, and Φ) is also its Xt
It is a sectional view of the -Xt portion. (F)...Single filament, (M)...Multifilament thread, CP)...
Separating device, (Q)... counting device, (1, (1')
)...Gripping part, (2)...Aligning table, (3...
・Knife (cutting means), (4)...Tension sensor, (5・
...Data processing section, (6), (6')...Movable arm, (7,<6...Lower yarn nip member, (8,
(8')... Upper yarn nip member, (9, (9')
・Yarn gripping device, (10) ・Support shaft, (11)・
... U-shaped spring, (72) ... Movable rod, (1
3), (14)...Curved surface, (15)...Tension meter amplifier, (16)...A/D converter, (17)...Microcomputer, (18)...
Display device, (19), (19')... working end,
(20)...Vibration generating part, (2a)...End part,
(2b), (2c)...Ultrasonic transducer, (2d)
... Electrode, (21) ... Alignment table vibrating piece, (210
)...Gap, (211)...Magnetic core, (
212)... Holder fitting, (213)... Screw,
(214)...Exciting coil, (215)...Mechanical feedback loop, (21B)...Variable frequency oscillator, (217)...Variable resistor, (218)...Amplifier, (219)... )...Resistance wire strain gauge, (220)...
・Electrostrictive element, (221) t (222)...Lead wire, (30)...Rotating means, (311)...Back and forth moving arm, (312)...Mounting shaft, (5H) ...A gear, (314)...B gear, (315)...
C gear, (51G)...claw spring, (517)...
-・Fixing metal fitting, (318n... board, (319
)...rod, (50), (51)...rotation drive body, (52)...
・Friction roller, (53)... Contact body, (53
a) Spring, (54) Cover
(60)...Motor, (61)s (62)...
Timing belt type transmission device, (501), (502
), (511), (512)...stepped disc, (5
03), (513)... Solenoid coil (adsorption means), (504), (514)... Rotating shaft, (50
5), (506), (51B), (516)...
・Bearing, (62G)...Central part (of the friction roller), (
521), (522)... (friction roller) end. Momonabe Himetsubo ￥ Saijo ku n ko θ) Law II > Self/Clothes White ] Judgment Ren Spasticity (Ki ＼ Therapy + r: S 枳 鋪(叏! Pa-zuke J - Kany ,, /-() t 4 [I (籟L N PA ふむ IC 濤 U′X Zai kai 1(? ゎ￥￥乎宵一Turn- ■- ■・

Claims (9)

[Claims] (1) A separating device used to count the number of filaments constituting a multifilament thread, which is equipped with a friction roller that separates the multifilament thread by rubbing the multifilament thread on its upper surface, and a required interval. a pair of gripping parts provided through the gripping parts to nip the multifilament threads; an alignment table located between the two gripping parts to align the multifilament threads while press-contacting them under appropriate tension; A cutting means that is provided near the alignment table and sequentially cuts the constituent filaments of the multifilament thread; a tension sensor that measures a state of tension decrease as the multifilament thread is cut; and a tension measured by the tension sensor. 1. A device for counting the number of constituent filaments of a multifilament yarn body, comprising: a data processing unit that determines the number of constituent filaments from data indicating a stepwise descending state of the multifilament yarn body. (2) The number of filaments constituting the multifilament yarn body according to claim (1), wherein a contact body is provided below the friction roller of the fiber splitting device, and is configured to make sliding contact with the lower surface of the friction roller. A device for counting. (3) Providing a rotary drive body that actively rotates in the fiber splitting device,
The device for counting the number of filaments forming a multifilament yarn body according to claim 1 or 2, wherein the device is configured to transmit rotation by being in circumscribed contact with the friction roller. (4) The apparatus for counting the number of filaments constituting a multifilament yarn body according to claim (3), wherein the rotary drive body has an attraction means that transmits rotation while attracting a circumscribed friction roller with magnetic force. . (5) Claim (1) wherein the cutting means of the counting device is a knife.
) to (4). A device for counting the number of constituent filaments of a multifilament thread according to any one of (4). (6) A vibration generating section that applies vibration higher than the natural vibration frequency of the tension sensor is provided on the alignment table of the counting device, and the cutter is brought into contact with the multifilament thread body on the alignment table while vibrating it. An apparatus for counting the number of constituent filaments of a multifilament thread body according to claim (5). (7) The multifilament according to claim (5) or (6), wherein the blade is provided with a vibration generating section that applies vibration higher than the natural vibration frequency of the tension sensor to the mounting base of the blade, and is configured to apply vibration to the blade. A device that counts the number of filaments that make up the filament. (8) The blade according to any one of claims (5) to (7), wherein the blade is a circular blade, and the blade is provided with rotating means for moving the working position for cutting the multifilament thread at appropriate intervals. A device for counting the number of filaments constituting the multifilament thread body described above. (9) The device for counting the number of constituent filaments of a multifilament yarn body according to any one of claims (1) to (4), wherein the cutting means of the counting device is a laser beam.