JP3166452B2 - Breaker yarn break detection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a braider for forming various braids by assembling a plurality of yarns or fiber bundles (hereinafter, simply referred to as "yarns"). The present invention relates to a yarn breakage detection device of a braider that detects that a yarn has been cut.

[0002]

2. Description of the Related Art Conventionally, various braiders have been known in which braids are formed by combining a plurality of yarns with mandrels having various shapes such as a rod shape, a T shape, an I shape, and a tetrapot shape.

[0003]

Conventionally, there is no practical breaker yarn breakage detecting device for detecting the breakage of a yarn fed from a bobbin carrier traveling along a track and heading toward a composition point. In spite of the fact that the yarn was cut, there was a problem that the composition was continued and a defective braid was produced.

An object of the present invention is to provide a device for detecting a yarn breakage of a braider, which can reliably detect a yarn breakage occurring during the composition.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a yarn breakage detecting device for detecting a running state of a yarn unwound from a bobbin carrier running along a track.
Travel of the bobbin carrier traveling along the track and the track
The bobbin carrier travel detector that detects the state
A yarn breakage detecting device, wherein
Based on the detection result by the carrier traveling detection unit, the yarn
The yarn breakage is detected by a breakage detecting device .

[0006]

EXAMPLES Examples of the present invention will be described below, but the present invention is not limited to these examples unless it exceeds the gist of the present invention.

First, before describing a device for detecting a thread breakage of a blade according to the present invention, an example of a blader to which the device for detecting a thread breakage of the blader of the present invention is applied is mainly a front view of the blader shown in FIG. And FIG. 4 which is a side view thereof. 1 and 4
In FIG. 5 to be described later, a square portion indicated by a dotted line above the bobbin carrier C is a thread guide portion c to be described later.
3 is omitted.

[0008] A braider BR as an example to which the present invention is applied includes a braider main body Bb and a mandrel device Bm.
It is composed of The blader body Bb is formed in a curved upper plate U having a predetermined radius of curvature R and disposed in a substantially cylindrical machine base Fb having a horizontal axis and an opening e on one side. The mandrel device Bm includes a bobbin carrier C that travels along a track, a driving device D that drives the bobbin carrier C along the track, and a composition position stabilizing guide member G. The mandrel device Bm includes a machine base Fm and a mandrel. It is composed of a moving device M and the like.

Hereinafter, each of the above devices and members will be outlined. First, the blader body Bb and the bobbin carrier will be mainly described with reference to FIG. 5 which is an enlarged front view of a driving device D for causing the bobbin carrier C including the section II of FIG. 4 and FIG. 4 to travel along a track. A drive device D and the like for causing C to travel along a track will be described.

As shown in FIG. 4, the curved upper plate U is disposed at a predetermined interval on a substantially cylindrical machine frame f1 disposed in a substantially cylindrical machine base Fb. A known track is bored in the upper plate U in the circumferential direction, which is secured by appropriate fixing members f2 and f2 '. f3 is a hollow bolt attached to the machine frame f1 by a nut f4. A gear d1 is fitted to the hollow bolt f3 via a suitable bearing f5. A bobbin carrier described later is mounted on the gear d1 on the upper surface. An impeller d2 having a groove into which the engagement shaft c1 of C is fitted is fixed so as to be able to rotate integrally with the gear d1.

Y is a yarn that is unreeled from a bobbin placed on a bobbin carrier C and heads toward a composition point P on a mandrel m supported by a mandrel device Bm.
y is rewound from the bobbin carrier C disposed substantially horizontally on the frame Fb ′ of the substantially cylindrical machine base Fb,
b, is guided in a substantially right angle direction by a guide roller f6 attached to the mandrel m, and then inserted into the hollow bolt f3, and then toward the composition point P on the mandrel m. This is referred to as "yarn for yarn").

The gear d is driven by a suitable driving means such as a motor.
By rotating the wheel 1 to rotate the impeller d2,
The bobbin carrier C is configured to move along an orbit by moving an engagement shaft c1 of the bobbin carrier C fitted in a groove formed in the impeller d2. As described above, the bobbin carrier C is caused to travel along the track formed in the curved upper plate U to cross many yarns Y to form braids on the mandrels m having various shapes. If necessary, the yarn y for the middle yarn is unwound from the bobbin carrier C disposed substantially horizontally on the frame Fb 'of the machine base Fb and unwound from the bobbin carrier C traveling along the track. A braid is formed by being entangled with the yarn Y to be formed.

As shown in FIGS. 1 and 4, a bobbin carrier C is arranged along a track formed on a peripheral surface of a curved upper plate U, and is mounted on the bobbin carrier C. The yarn Y pulled out from the set bobbin in the axial direction of the bobbin is configured to gather at the center of the curved upper plate U. The position of the mandrel m is controlled such that the composition point P of the braid formed on the mandrel m attached to the mandrel device Bm described later is located at the center of the curved upper plate U. .

Next, the bobbin carrier C will be described with reference to FIG. 6 which is a front view of the bobbin carrier C. In FIG. 6, c2 is an upper flange, and the upper flange c
2, a mast c4 having a U-shaped cross section and a spindle c5 having a thread guide portion c3 rotatably disposed at the distal end thereof are provided upright. A bobbin c6 around which the yarn Y is wound is inserted into the spindle c5, and a flyer c8 having a bearing c7 is rotatably fitted to the tip of the spindle c5.

A not-shown slit extending in the vertical direction is provided at the tip of the spindle c5, and a pair of hook members c9,
A lower end of the hook members c9 and c9 'is pivotally supported by a shaft (not shown) attached to the spindle c5. The hook members c9 and c9 'are constantly urged in directions away from each other by an elastic member such as a compression spring disposed between the hook members c9 and c9'.
Connect the bobbin c6 or the flyer c8 to the hook members c9, c
When the hook members c9 and c9 'are inserted into the spindle 9', the hook members c9 and c9 'rotate in a direction approaching each other, and the bobbin c6 or the flyer c8 can be mounted on the spindle c5. When the bobbin c6 or the flyer c8 is mounted on the spindle c5, the hook members c9 and c9 'are expanded in directions away from each other by an elastic member such as a compression spring, so that the bobbin c6 or the flyer c8 does not come off from the spindle c5. ing.

A cylindrical bobbin cover c6 'is attached to the upper flange c2. When the bobbin carrier C is inclined or inverted, the cylindrical bobbin cover c6 'is pulled out or hangs down the yarn Y wound on the bobbin c6, and is wound on the adjacent bobbin. This is to prevent troubles such as entanglement with the thread or the other members of the blader.

On the substantially U-shaped frame c10 of the thread guide portion c3 disposed at the end of the mast c4, a tension washer c11 and a guide roller c1 are sequentially provided from below.
2, a slack removing member c13 and a guide roller c14 are arranged. A guide c15 having a guide roller c15 'is attached to the tip of the slack removing member c13, and the other end of the slack removing member c13 is connected to a coil spring c.
One end of the coil spring c16 is attached.
Is attached to the frame c10. The slack removing member c13 is pivotally supported on the frame c10 via a shaft member c17 ′ attached to a bearing member c17 disposed on the frame c10, and is always counterclockwise in FIG. 6 by the coil spring c16. It is urged to rotate. Therefore, when the yarn Y unwound from the bobbin c6 becomes slack, the slack removing member c13 rotates counterclockwise around the shaft member c17 'in FIG. 6 so as to absorb the slack of the yarn Y. Is configured.

The frame c10 has through holes c18 and c19 through which the thread Y is inserted, adjacent to the tension washer c11 and the guide roller c14. The substantially U-shaped frame c10 is configured to be rotatable clockwise about an axis c20 disposed on the mast c4. When the bobbin c6 or the flyer c8 is mounted on the spindle c5, the frame c10 By turning clockwise, a space is created above the spindle c5, and the bobbin c6 or the flyer c8 is mounted on the spindle c5. After the bobbin c6 or the fryer c8 is mounted on the spindle c5, the frame c10 is rotated counterclockwise to place it at a position as shown in FIG. The frame c10 is configured to be held at the position shown in FIG. 6 unless the lock is released by an appropriate lock.

In FIG. 6, c21 is a lower flange having a substantially elliptical shape, and c22 is an upper flange c2 and a lower flange c21 which are fitted and slid on a track formed on the upper plate U.
It is a guide part arranged between them. The bobbin carrier C is configured to run along a track while being held substantially perpendicular to the upper plate U by sandwiching the upper plate U between the upper flange c2 and the lower flange c21.

1 and 4, G is a composition position stabilizing guide member, and the composition position stabilizing guide member G is
b, a first composition position stabilizing guide member g1 attached to a frame g1 ′ extending substantially horizontally from the intermediate frame Fb ″.
And a second composition position stabilizing guide member g2 attached to a tip end of a frame g2 'erected on a floor member Fr arranged at a predetermined distance from the first composition position stabilizing guide member g1. Have been.

The first composition position stabilizing guide member g1 and the second
The composition position stabilizing guide member g2 is arranged at predetermined intervals to separate the thread Y that swings with the lateral movement of the bobbin carrier C running meandering along the track formed in the upper plate U. The composition point P is maintained at a substantially constant position by guiding the first composition position stabilizing guide member g1 and the second composition position stabilizing guide member g2, and restricting the swing. By maintaining the yarn Y at a substantially constant position, a stable composition can be realized without the yarn Y to be formed being entangled in an irregular state in the vicinity of the composition point P, and therefore, the shape of the formed braid is uniform and stable. Braids can be manufactured. Further, by disposing the composition position stabilizing guide member G, when the mandrel m is moved rightward in FIG. 4 after the composition is completed,
A large number of yarns Y connected to the braid formed by the second composition position stabilizing guide member g2 are bundled, and the cutting of the yarns Y by a suitable cutting device (not shown) can be effectively performed.

In FIGS. 1 and 4, Bm denotes a mandrel device, and a machine base Fm of the mandrel device Bm is disposed on the front surface of the blader main body Bb. Toward the approximate center of U, motor b1
Horizontal moving frame b that can be moved horizontally by appropriate driving means such as
2 are arranged. At the tip of the horizontal moving frame b2, a mandrel moving device M for appropriately controlling the position of the mandrel m in the biaxial or triaxial directions is provided, and the horizontal moving frame b2 is moved horizontally and the mandrel moving device is moved. With M, the position of the mandrel m is appropriately controlled in accordance with the composition process.

Next, referring to FIG. 1, FIG. 2 which is a side view of the yarn breakage detecting device S, and FIG. 3 which shows running detection signals of the yarn Y and the bobbin carrier C, an example of the above-described braider will be described. The yarn breakage detecting device S provided in the BR will be described.

The yarn breakage detecting device S includes a bobbin carrier C
And a bobbin carrier traveling detection unit S2 for detecting the traveling state of the bobbin carrier C.
When only one yarn breakage detecting device S is installed, the yarn breakage detecting device S is installed such that the yarn breakage detection position is located at a portion where the tracks intersect. If only one thread breakage detecting device S is installed in a place other than where the tracks cross, two bobbin carriers C will be located at the thread breakage detection position, and the thread breakage will be detected. Is impossible. Of course, when detecting a yarn break at a place other than the place where the trajectories intersect, it is possible to detect a yarn break by installing a yarn break detection device S for each trajectory.

S1 and s1 'are support frames s2, suitable for the machine frame f1 described above, which constitute the thread breakage detection section S1,
A thread break sensor support member attached via s2 ', and is disposed across the upper plate U in the width direction of the upper plate U.
Further, a light projecting device s3 and a light receiving device s3 'are disposed at the distal ends of the thread break sensor supporting members s1 and s1', respectively. The light projecting device s3 and the light receiving device s3 'are configured to detect the yarn Y fed from the bobbin carrier C via the yarn guide portion c3 at a position above the bobbin carrier C.

Reference numeral s4 denotes a bobbin carrier traveling detecting device which is provided on the lower portion of the upper plate U or on the machine frame f1 and constitutes a bobbin carrier traveling detecting section S2 for detecting the traveling state of the bobbin carrier C. A light projecting member for projecting light toward the engagement axis c1 of the carrier C and the engagement axis c
1 is configured as a reflection-type detection device having a light-receiving member that receives light reflected from the light-receiving member 1. Of course, it is also possible to configure as a light-transmitting detecting device like the light projecting device s3 and the light receiving device s3 'arranged at the tip of the thread break sensor supporting members s1, s1' described above.

Next, the operation of the yarn breakage detecting device S will be described. Each time the light emitted from the light projecting device s3 is blocked by the yarn Y unreeled from the bobbin carrier C traveling along the track, the light receiving device s3 'side has the light receiving device s3' shown in FIG.
It is configured to output a periodic pulse signal as shown by a solid line in FIG. Therefore, when the yarn Y fed from the bobbin carrier C traveling along the track is cut, a pulse to be output unless the yarn Y is cut (in FIG. 3 (a), a pulse to be output). Is not output, and by detecting that this pulse is not generated, it is possible to detect the breakage of the yarn Y being unwound from the bobbin carrier C.

On the other hand, although the yarn Y is not cut, the light emitting device s is delayed due to, for example, entanglement with another yarn Y.
In some cases, the light emitted from the line 3 may be blocked. In such a case, the pulse interval becomes large, and the thread breakage detecting unit S
1 will malfunction if the yarn Y is cut.

It is preferable to provide a bobbin carrier traveling detecting section S2 in order to prevent the above-mentioned erroneous operation and to surely detect the cutting of the yarn Y. That is, as described above, every time the engagement shaft c1 of the bobbin carrier C traveling along the track passes in front of the bobbin carrier traveling detection device s4, as shown in FIG. The pulse is outputted to the bobbin carrier traveling detecting section S2. If there is no pulse output from the yarn breakage detection unit S1 within a predetermined time from the pulse output from the bobbin carrier travel detection unit S2, it is determined that the yarn Y has been cut, and the bobbin carrier C Stop driving.

With this configuration, it is possible to prevent malfunctions as compared with the case where the yarn breakage detecting section S1 for simply detecting the breakage of the yarn Y being unwound from the bobbin carrier C is provided. Thus, it is possible to accurately detect the cutting of the yarn Y.

As described above, when the yarn breakage is detected by the position breakage detecting device S, the composition operation is stopped, and an appropriate display device such as a lamp or an alarm is activated, and the operator is notified of the yarn breakage. It is preferable to configure so as to indicate occurrence. The operator performs splicing based on the operation of the display device as described above. Further, at the time of thread breakage, the bobbin carrier C in which the thread break has occurred is always near the position break detection device S, so that the operator can easily find the bobbin carrier C in which the thread break has occurred.

In the above-described embodiment, the thread breakage detecting device S is disposed at one position on the curved upper plate U as shown in FIG. It is possible to detect the cut of the yarn Y earlier by arranging it at a position facing the shifted upper plate U, and it is also possible to arrange the yarn breakage detecting devices S at three or more places as needed.

[0033]

Since the present invention is configured as described above, it has the following effects. Since it is configured to detect the cutting of the yarn fed from the bobbin carrier, the composition of the defective braid can be prevented, and therefore, the productivity of the braider can be improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a blader.

FIG. 2 is a side view of the yarn breakage detecting device.

FIG. 3 is a diagram showing travel detection signals of a yarn and a bobbin carrier.

FIG. 4 is a side view of the blader of FIG. 1;

FIG. 5 is an enlarged front view of a driving device for causing the bobbin carrier including the section II of FIG. 4 to travel along a track.

FIG. 6 is a front view of the bobbin carrier.

[Explanation of symbols]

 BR: Braider Bb: Braider body Bm: Mandrel device C: Bobbin carrier D: ······································· Thread breakage detection device. ... Top plate

Claims (1)

(57) [Claims] 1. A yarn breakage detecting unit for detecting a running state of a yarn fed from a bobbin carrier running along a track.
And the traveling state of the bobbin carrier traveling along the track
Yarn breakage by the bobbin carrier travel detector that detects
A yarn detecting device and a bobbin carrier.
Yarn breakage based on the detection result by the
Yarn breakage detection device braider, characterized in that to detect the yarn breakage by the detection device.