JPH0578025A - Unreeling auxiliary device of automatic winder - Google Patents

Abstract

PURPOSE:To provide an automatic winder provided with an unreeling auxiliary device which has the lower side balloon regulating member to follow the untying of a feeder bobbin, and to provide an untying auxiliary device which can maintain the feeder bobbin inserted and erected in a tray in a right posture at the winding position. CONSTITUTION:The unreeling auxiliary device of an automatic winder is composed by providing holding mechanisms 114 and 126 to hold a tray 18 in which a feeder bobbin 4 is inserted and erected at the winding position A; a positioning mechanism 20 to shunt freely to the core pipe 4b of the feeder bobbin 4; and the lower side balloon regulating member 31 which has the inner bore regulator whose diameter is smaller than the outer diameter of the yarn of the feeder bobbin 4 and larger than the outer diameter of a core pipe, and lowers together with the unreeling of the feeder bobbin 4.

Description

Detailed Description of the Invention

[0001]

[Industrial application] An automatic winder that forms one winding package from a yarn unwound from a yarn supplying bobbin that is sequentially supplied to a winding position by lateral movement, and enables a high winding speed. Unwinding assisting device.

[0002]

2. Description of the Related Art An automatic winder is a winding unit in which a large number of weights are arranged in parallel.
Will be explained.

In FIG. 4, the winding unit 1 is fixed in position by a support pipe 2 and a duct 3, and the winding unit 1
The yarn Y unwound from the yarn supplying bobbin 4 that is positioned and supplied to the winding position A of the yarn is a balun breaker 6, a disc or gate type tenser 7 that applies a predetermined tension, and a slab catcher 8 that detects a defective portion of the yarn. And the like, and is wound into a winding package 14 which is rotated by the traverse drum 13. Reference numeral 15 is a yarn joining device, 16 is a suction mouth for guiding the upper yarn on the package side to the yarn joining device 15, 17
Is a relay pipe that guides the lower yarn on the yarn supplying bobbin side to the yarn joining device 15, each winding unit has the above-mentioned members, and a large number of such winding units 1 are arranged in parallel. An automatic winder is constructed. Further, the yarn supplying bobbins 4 are fed to the winding position A of the winding unit 1 by being laterally moved through the supply conveyor 11 and the inclined disc 19 while being inserted in the trays 18 which are independent from each other. The empty bobbin 4'after the winding is completed is discharged to the discharge conveyor 12, and a new yarn supplying bobbin 4 is supplied instead. The yarn end Y1 is inserted into the hollow portion of the head of the yarn supplying bobbin 4 so that the yarn Y of the yarn supplying bobbin 4 at the winding position A is blown up and sucked by the relay pipe 17.

Next, the feeding device 100 for the winding position of the yarn feeding bobbin will be described with reference to FIGS. In FIG. 5, the yarn supplying bobbin 4 is inserted in the tray 18. That is, the lower end of the core tube 4b of the yarn supplying bobbin 4 is inserted into the peg 18b of the tray 18 and placed on the stepped portion 18b in an upright posture. The supply conveyor 11 and the discharge conveyor 12 are arranged with a step difference between the upper and lower sides of the supply conveyor 100.
Are provided in a form that connects them diagonally.

Referring to FIG. 6, a first bent path 112 for the tray 18 is formed between the conveyors 11 and 12.
The second guide plates 113 and 114 are the winding unit 1.
The lower surface of the carry-in side passage 112a is a freely rotating inclined disc 19, and the lower surface of the discharge side passage 112b is a bottom plate 116 formed by bending the first guide plate 113. Supply conveyor 11, inclined disc 19, bottom plate 116
The discharge conveyor 12 and the discharge conveyor 12 form substantially the same plane continuous with each other, and a part of the inclined disk 19 contacts the supply conveyor 11 and is given a rotational force in the direction of arrow a about the shaft 117. The supply conveyor 11 is further provided with a third guide plate 118, and when there is no tray 18 at the standby position 124, the tray 18 transported by the conveyor 11 in the direction of arrow b is guided into the carry-in side passage 112a. At the same time, the surplus tray 18 is passed.

A stopper 120 having a free roller 119 at its tip is rotatably supported by a shaft 121 on the first guide plate 113, and is urged to rotate in the direction of arrow c by a spring 122 and abutted against a pin 123 to rotate the same. It has been restrained. When the stopper 120 is in contact with the pin 123,
The first bent portion of the passage 112, that is, the outlet of the standby position 124, has a convex portion 125 that narrows the outlet of the stepped portion 18a of the tray 18, and is guided from the supply conveyor 11 into the carry-in side passage 112a. The tray 18 to the standby position 1
It is stopped at 24, and two trays 18 are always secured in the carry-in side passage 112a.

An eject lever 126 is pivotally supported by a shaft 128 on the second guide plate 114. The eject lever 126 has a second bent portion of the passage 112, that is, a concave portion 131 capable of holding and holding the stepped portion 18a of the tray 18 at the winding position A described above, and the other side has an arc shape centered on the shaft 128. The roller support edge 132 is formed. The shaft 128 of the eject lever 126 is rotated by a rocking arm (not shown) that reciprocates.

To explain the operation of the above-mentioned feeding device 100, first, in FIG. 6 showing a normal winding state, one tray 18 is provided at the winding position A, and two trays 18 are provided at the standby position 124 in the loading side passage 112a. Located respectively. At this time, the first tray 18 in the winding position A has its stepped portion 18a supported by the recess 131 of the eject lever 126 and is stopped, and the second tray 18 in the standby position 124 has its stepped portion. 18a is brought into contact with the convex portion 125 of the stopper 120 to prevent the disc 115 from feeding. When the winding of the yarn supplying bobbin on the first tray 18 is completed from this state, the shaft 1 is rotated by a locking arm (not shown).
28 rotates by a certain angle. As a result, the eject lever 126 rotates to the left while holding the first tray 18 in the recess 131, and ejects the first tray 18 onto the ejection conveyor 12 from the ejection side passage 112b.
With the above rotation of the eject lever 126, the roller bearing edge 132 of the eject lever 126 contacts the free roller 119 of the stopper 120 to retract the convex portion 125 of the stopper 120 to the left. Therefore the second tray 18
Is released from the convex portion 125, is fed from the supply conveyor 11 by friction and is sent by the inclined disk 115 that constantly rotates, and abuts against the roller bearing edge 132 of the eject lever 126 and is stopped. Next, when the eject lever 126 returns to the original position, the stopper 120 returns to the original position, and the second tray 18 stopped at the roller support edge 132 is placed in the recess 31 of the eject lever 126, that is, at the winding position. It is sent to A. At the same time, the yarn end Y1 is blown up by compressed air to be gripped by the relay pipe, and yarn joining is performed.

Returning to FIG. 4, in the winding unit 1 described above, corn and cheese are removed while removing defective portions such as slabs from the yarn unwound from the yarn supplying bobbin and performing yarn joining for each yarn supplying bobbin. Since a single winding package having a uniform shape is formed, its productivity greatly depends on the winding speed. However, in the conventional automatic winder, the practical winding speed was around 1000 m / min. The reason is that the winding speed is limited by the combination of the following phenomena (a) to (c). (A) The unwinding tension increases as the winding speed increases. In particular, the unwinding tension sharply increases from the time when the remaining unwinding amount called a third ball becomes 1/3, but when the degree of this increase increases, yarn breakage due to the tension occurs. (B) Sluffing increases as the winding speed increases. This sluffing is a state in which a plurality of coils are intertwined with each other like a loop drop and are unwound at a stretch without being unwound stably from the chess portion 4a of the yarn supplying bobbin 4, leading to yarn breakage. Cause.
(C) The fluff increases as the winding speed increases.

It has been empirically known that these phenomena (a) to (c) depend on the state of unwinding from the yarn supplying bobbin. Therefore, as shown in FIG. 4, the balloon of the yarn unwound from the yarn supplying bobbin 4 is limited by a balloon breaker 6 which is a quadrangular pyramid cylinder, and is kept appropriate so that the balloon does not spread too much. However, since the balloon breaker 6 is located from the lower side of the guide plate 10 to the upper side of the yarn supplying bobbin 4 and is fixed to the machine base 5, the unwinding of the yarn supplying bobbin 4 progresses and the yarn supplying bobbin 4 advances. The distance from the chess portion 4a of 4 to the lower end of the balloon breaker 6 gradually became longer, and the function of the balloon breaker 6 tended to deteriorate. Therefore, an unwinding assisting device has been proposed in which the balloon breaker 6 serving as the lower balloon restricting member is formed into a cylinder and is gradually lowered following the unwinding of the yarn supplying bobbin.

[0011]

However, the yarn feeding bobbin 4 inserted into the tray 18 held by the feeding device described with reference to FIGS. 5 and 6 is not always in a straight posture, and has been described with reference to FIG. It is necessary to provide a sufficient dimensional allowance between the balloon breaker 6 as the lower balloon regulating member of the unwinding assisting device and the yarn feeding bobbin 4, which causes a problem that the unwinding assisting device does not function practically. Had a point. The yarn feeding bobbin 18 is repeatedly used, and the core tube 4
Although there is a protective member attached to the lower end of b, it may be thrown out during the repeated transportation, and the tray 18 and the yarn supplying bobbin 4 are difficult to be centered due to deformation of the protective member.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is unwinding by a lower balloon restricting member that follows unwinding of a yarn supplying bobbin. (EN) An automatic winder having an assisting device, which aims to provide an unwinding assisting device in which a yarn supplying bobbin inserted in a tray can maintain a correct posture at a winding position.

[0013]

In order to achieve the above object, an unwinding assisting device for an automatic winder according to the present invention comprises a holding mechanism for holding a tray for inserting a yarn supplying bobbin at a winding position, and a yarn supplying device. A retractable positioning mechanism with respect to the core tube of the bobbin and a lower balloon restricting member that has an inner diameter restricting portion that is smaller than the outer diameter of the yarn layer of the yarn supplying bobbin and larger than the outer diameter of the core tube and that descends with the unwinding of the yarn supplying bobbin. Be prepared.

[0014]

When the core tube is positioned by the positioning mechanism while holding the tray, the yarn feeding bobbin is corrected to the correct posture and the posture is maintained.

[0015]

Embodiments of the method of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an unwinding assisting device of the present invention.

In FIG. 1, an unwinding assisting device 30 includes a tubular body 31 as a lower balloon regulating member, a throttled tubular body 32 as an upper balloon regulating member, a sensor 33 as a tracking mechanism, a cylinder 38, and a controller. 40, the positioning mechanism 20, and the eject lever 12 as a holding mechanism
6, the second guide plate 114 is a main member.

The cylinder 31 as the lower balloon regulating member is open at the top and bottom, and the lifting block 3 is provided on the side surface of the cylinder 31.
It has a first arm 31a to which 5 is attached. The elevating block 35 is vertically slidably inserted into a rod 37 suspended from a fixed block 36, and the piston rod 3 of a cylinder 38 erected on the fixed block 36.
8a connected to the piston rod 38a of the cylinder 38
The tubular body 31 can be raised and lowered according to the expansion and contraction of the. The cylindrical body 31 is sequentially lowered so that the distance from the chess portion 4a of the yarn supplying bobbin 4 is substantially constant, and the core tube 4b of the yarn supplying bobbin 4 is moved.
Cover. Then, the unwinding angle is increased by appropriately maintaining the spread of the balloon (the lower balloon with respect to the cylindrical body 31) of the yarn unwound from the chess portion 4a, and plays the role of suppressing the occurrence of sluffing and fluff.

In order to sufficiently fulfill the role of the tubular body 31, the relationship between the dimension of the inner diameter regulating portion which is the lower end of the tubular body 31 and the radial dimension of the yarn feeding bobbin 4 is important. Chess part 4
The inner diameter D of the lower end of the cylindrical body 31 that controls the balloon of the yarn unwound from a must be smaller than the outer diameter of the yarn layer of the yarn supplying bobbin 4 and larger than the outer diameter of the core tube 4b. Generally, the core tube 4b and the thread layer of the yarn supplying bobbin 4 have a conical shape, the thread layer has a minimum outer diameter D1 on the upper side thereof, and the outer diameter of the core tube 4b is the cylindrical body 31.
Has a diameter d1 larger than the apex at the lowest position (shown by the chain double-dashed line). Therefore, the inner diameter D of the cylindrical body 31 is required to be smaller than D1 and larger than d1. Preferably, the inner diameter D of the tubular body 31 should be as close as possible to d1. As will be described later, the effect due to the sequential lowering of the tubular body 31 is up to the third ball, and there is no difference in the degree of the effect even if it is further lowered or not lowered. Therefore, the cylinder body 31 may have the position of the two-dot chain line near the third ball, which is determined by the length of the piston rod 38a of the cylinder 38, as the lowest position, and the diameter d1 + the gap of 2 to 3 mm in diameter = the inner diameter D of the cylinder body 31. preferable.

The cylindrical body 32 with an aperture as the upper balloon regulating member is inserted into the outer periphery of the cylindrical body 31 as the lower balloon regulating member. Therefore, the cylindrical body 32 with a diaphragm is the cylindrical body 3
It descends with the sequential decrease of 1. However, the cylindrical body 32 with a diaphragm
An arm 32c with a slit 32d is attached to the, and a magnet 32b is attached to the lower side of the arm 32c. The slit 32d is guided by the stopper shaft 34, and the magnet 32 is attached to the plate 34a at the lower end of the stopper shaft 34.
When b and the arm 32c hit, the descent of the apertured cylinder 32 is stopped. That is, at the latest when the thread tension starts to increase remarkably, the third cylinder 32 with stop stops lowering, and the stop 32a is positioned directly above the core tube 4b. The diaphragm 32a serves to regulate the yarn path, prevent a large fluctuation of the balloon (upper balloon) from the tubular body 31 to the guide plate 10, and narrow the fluctuation range of the yarn tension.

Next, the sensor 33, the cylinder 38, and the controller 40 as the tracking mechanism will be described. The sensor 33 attached to the second arm 31b of the tubular body 31 detects the chess portion 4a of the yarn feeding bobbin 4, and the controller 40 receiving the input of the sensor 33 actuates the switching valve 39, and the piston rod 38a of the cylinder 38. Gradually expands so that the distance between the throttled tubular body 32 and the chess portion 4a can be kept substantially constant. A diffuse reflection sensor is used as the sensor 33. As a typical example thereof, a light source composed of an LED and a detector composed of a phototransistor or a photodiode are arranged in a cross or in parallel, and the light from the light source is diffused by a detection object and reflected and detected by the detector. There is something. As shown in the figure, as the unwinding of the chess portion 4a progresses, the distance from the sensor 33 to the chess portion 4a increases, and eventually the sensor 33 issues an OFF signal. The controller 40 receiving this OFF signal extends the piston rod 38a of the cylinder 38 via the switching valve 39. Then,
The distance from the sensor 33 to the chess part 4a becomes short, and the sensor 33 eventually outputs an ON signal. The controller 40 receiving this ON signal causes the cylinder 3 to pass through the switching valve 39.
The piston rod 38a of No. 8 is stopped. By repeating this, the cylindrical body 31 descends sequentially with the unwinding. The sensor 33 for monitoring the chess part 4a is not limited to the horizontal direction,
It can be attached at any angle from right above the chess part 4a to horizontal.

Next, a holding mechanism for the tray 18 and
A positioning mechanism for the yarn feeding bobbin 4 with respect to the core tube 4b will be described. The holding mechanism is the supply device 100 described in FIGS. 5 and 6.
In particular, the tray 18 is held at a predetermined winding position A by sandwiching the stepped portion 18a of the bobbin 18 between the eject lever 126 and the second guide plate 114 of FIG. The positioning mechanism 20 includes a conical member 21, a lever 22, a turning drive unit 23, and a slide unit 24. The conical member 21 is attached downward to the tip of a lever 22, the lever 22 is rotatably supported by a turning drive unit 23, and the turning drive unit 23 is supported by a slide device 24 so as to be vertically slidable. The conical member 21 is in the retracted position indicated by the chain double-dashed line during normal winding. However, at the time of bobbin change, after the lever 22 turns, the turning drive unit 23 descends downward, and the conical member 21 is pushed into the core tube 4b.
The core tube 4b is positioned.

Further, as shown in FIG.
Pressing members 25 are embedded in three places on the outer periphery of the peg 18b. In this pressing member 25, a hemispherical projection 26 is biased outward by a spring 27, and the core tube 4b inserted into the peg 18b is kept in its posture by the biasing force of the hemispherical projection 26. ..

Further, equipment related to the movement of the unwinding assisting device 30 will be described. 8 is a slab catcher and 9 is a yarn feeler. As the slab catcher 8, for example, a device that measures a change in capacitance is used, and it is possible to detect not only a yarn defect but also whether or not the yarn is running. If the slab catcher 8 does not send a yarn traveling signal,
The yarn splicing operation is performed. Further, when the slab catcher 8 does not generate the yarn traveling signal and the yarn feeler 9 does not detect the yarn, the yarn supplying bobbin 4 is an empty bobbin and the bobbin is changed. In this case as well, the tubular body 31 and the squeezed tubular body 32 of the unwinding assisting device 30 are in the retracted positions indicated by solid lines, and when the new yarn feeding bobbin 4 is in the predetermined winding position, the tubular body 31 and the squeezed tubular body 32 are separated. The operating position covers the core tube 4b.

Next, a method of correcting the posture of the yarn supplying bobbin and the yarn unwinding method by the above-described unwinding assisting device 30 will be described with reference to FIG. In FIG. 3A, the solid line cylinder 31 and the diaphragm cylinder 32 are in the retracted position. In this retracted position, the inner diameter restricting portion of the lower end of the tubular body 31 is above the core tube 4b, and the supply of the new yarn feeding bobbin 4 to the winding position A following empty bobbin discharge has been described with reference to FIGS. 5 and 6. It is performed by the feeding device. Next, the stepped portion 18 a of the tray 18 is attached to the eject lever 126.
The second guide plate 114 holds the core tube 4b at the winding position so that the lower portion of the core tube 4b is positioned. Next, the conical member 21 of the positioning device 20 is pushed into the core tube 4b, and
The upper part of b is positioned, the yarn supplying bobbin 4 is corrected to the correct upright posture, and the positioning device 20 returns to the retracted position. This upright posture is maintained by the pressing member 25 of the tray 18.
After the yarn supplying bobbin 4 is supplied to the winding position A, the positioning position device 20 positions the upper portion of the core tube 4b. Next, the procedure of positioning the tray 18, that is, the lower portion of the core tube 4b by the eject lever 126 and the second guide plate 114 may be performed. When the posture of the yarn supplying bobbin 4 is corrected, the inner diameter regulating portion at the lower end of the tubular body 31 is lowered to the operating state in which the core tube 4b is covered, as shown by the two-dot chain line. In addition, yarn splicing is performed in parallel, and the unwinding of the yarn supplying bobbin is started.

FIG. 3 (b) shows the state of the quintuplet, and the cylindrical body 3
Both 1 and the cylindrical body 32 with a diaphragm descend, and the diaphragm 32a is in a predetermined position. In particular, the tubular body 31 is sequentially lowered so as to follow the unwinding of the chess portion 4a, the unwinding angle θ of the yarn unwound from the chess portion 4a is kept large, and it is unwound with the yarn remaining on the yarn feeding bobbin. As a result of less friction between the threads, the occurrence of sluffing and fluff is suppressed. FIG. 3C shows the state of the three-divided ball, only the tubular body 31 descends, the tubular body 32 with a diaphragm remains stopped, and the diaphragm 32a is located at a predetermined position just above the core tube 4b. .. In particular, the unwinding tension tends to increase sharply after the third ball, which is caused by a large balloon such as a chain double-dashed line appearing in the yarn unwound from below the chess portion 4a and from above the chess portion 4a. This is due to the alternating appearance of small balloons appearing in the unwound yarn. However, since the diaphragm 32a is present, the diaphragm 3
The upper balloon from 2a to the guide plate 10 is restricted to a small one. Further, after the third coin, the shape of the chess portion 4a begins to gradually collapse, and even if the cylindrical body 31 is lowered further, there is no difference in the effect of suppressing sluffing and fluff. Therefore, as shown in FIG. 3D, in the unwinding after the third ball, the tubular body 31 does not follow the unwinding and remains at the predetermined position. That is, the inner diameter restricting portion at the lower end of the tubular body 31 needs to descend sequentially following the unwinding from the beginning of unwinding to the third ball, and the aperture 32a of the tubular body 32 with apertures unwinds from the third ball. It is necessary to stop at a predetermined position directly above the core tube 4b until the end. In this way, paying attention to the difference in the necessity of the tubular body 31 and the diaphragm 32a, the tubular body 31 as the lower balloon regulating member and the diaphragm 32a as the upper balloon regulating member are divided, and their action points are different. Is.

By the way, the unwinding assisting device 30 of FIG. 1 follows the unwinding by the sensor 33, which can be moved up and down. A separate independent movement is required. Therefore, an efficient movement of the cylindrical body that does not reduce the winding efficiency will be described below. Slab catcher 8
When the yarn traveling signal from is turned off, a series of yarn splicing operations is started. Starting from the OFF of this yarn running signal,
The yarn feeler 9 checks for the presence of yarn. When the yarn feeler 9 has a yarn absence signal, it is an empty bobbin, and bobbin change is performed. Using the yarn absence signal of the yarn feeler 9 as a reference, the tubular body 31 and the apertured tubular body 32 of the unwinding assisting device 30 are quickly raised to the retracted position indicated by the solid line, regardless of the output of the sensor 33. Then, the bobbin change and the posture correction of the yarn supplying bobbin are performed as one of a series of yarn splicing operations, and when the yarn splicing is successful and the yarn starts to be wound, the yarn traveling signal from the slab catcher 8 is turned ON. Starting from the ON of this yarn traveling signal, the tubular body 31 and the tubular body 32 with a diaphragm descend, and the output of the sensor 33 changes from OFF to ON.
The cylinder body 31 stops at the operating position when switching from

[0027]

The unwinding assisting device of the automatic winder according to the present invention comprises a holding mechanism for holding the tray for inserting the yarn supplying bobbin at the winding position, and a positioning mechanism for retracting the yarn supplying bobbin with respect to the top of the core tube. A lower balloon restricting member that has an inner diameter restricting portion that is smaller than the outer diameter of the yarn layer of the yarn supplying bobbin and is larger than the outer diameter of the core tube and that descends with the unwinding of the yarn supplying bobbin, and holds the tray. When the top of the core tube is positioned by the positioning mechanism in this state, the yarn feeding bobbin is corrected to the correct posture and keeps that posture, so it is preferable to use the lower balloon regulating member having the inner diameter regulating portion with the smallest gap with the core tube. Therefore, the lower balloon can be regulated appropriately.

[Brief description of drawings]

FIG. 1 is a perspective view of an unwinding assisting device of the present invention.

FIG. 2 is a diagram showing a pivot of a tray.

FIG. 3 is a diagram showing movements of a positioning mechanism and a lower balloon regulating member.

FIG. 4 is a device layout diagram of a winding unit.

FIG. 5 is a side view of the yarn supplying bobbin supplying device.

FIG. 6 is a top view of the yarn supplying bobbin supplying device.

[Explanation of symbols]

 20 Positioning mechanism 30 Unwinding assisting device 31 Cylindrical body (lower balloon regulating member) 100 Yarn supply bobbin supplying device

Claims (1)

[Claims] 1. A holding mechanism for holding a tray for inserting a yarn supplying bobbin at a winding position, a positioning mechanism for retracting the yarn supplying bobbin with respect to a core pipe, and a core pipe smaller than an outer diameter of a yarn layer of the yarn supplying bobbin. An unwinding assisting device for an automatic winder, comprising: a lower balloon restricting member having an inner diameter restricting portion larger than the outer diameter and descending together with the unwinding of a yarn supplying bobbin.