JPH05132229A - Release auxiliary device for automatic winder - Google Patents

Abstract

PURPOSE:To provide an automatic winder that surely performs the blowup of a yarn end even in the case of having used a balloon regulating member with a throttle so as to enable it to heighten a practical winding speed. CONSTITUTION:This release auxiliary is provided with a lower balloon regulating member 31, having an inside diameter regulating part being smaller than a yarn layer outside diameter of a feeding bobbin 4 but larger than the outside diameter of a core pirn 4b of the bobbin and being covered on this core pirn, and an upper balloon regulating member being situated in the upside of this core pirn 4b and having a throttle 51 smaller than an outside diameter of the core pirn 4b, thereby constituting this automatic winder's release auxiliary in which the throttle 51 is made to open/close freely.

Description

Detailed Description of the Invention

[0001]

[Industrial field] For example, an automatic winder that splices a large number of bobbines produced by a ring spinning machine and removes defective parts such as slabs and winds them into one corn or cheese-shaped winding package. The present invention relates to an unwinding assisting device, and more particularly to an unwinding assisting device capable of increasing the winding speed.

[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 described.

In FIG. 4, a winding unit 1 is fixed in position by a support tube 2 and a duct 3, and a yarn Y drawn from a yarn supplying bobbin 4 positioned and fed to a predetermined position of the unit is a balloon breaker 6 and a predetermined yarn. After passing through a disk or gate type tenser 7 for applying tension, a slab catcher 8 for detecting a defective portion of the yarn, etc., the yarn is wound by a traverse drum 13 into a winding package 14 that rotates. Reference numeral 15 is a yarn joining device, 16 is a suction mouse for guiding the upper yarn on the package side to the yarn joining device 15, and 17 is a relay pipe for guiding the lower yarn on the yarn supplying bobbin side to the yarn joining device 15. A unit has the above-mentioned members, and a large number of such winding units 1 are arranged in parallel to constitute one automatic winder. Further, the yarn feeding bobbins 4 are inserted in the trays 18 which are independent of each other, and the feeding conveyor 1
It is supplied to the winding position A of the winding unit 1 via 1 and the rotary disc 19. 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.

In the winding unit 1 described above, usually several to several tens of yarn supplying bobbins 4 are spliced into one winding package. This yarn splicing operation will be described with reference to FIG. When the yarn supplying bobbin becomes empty, the yarn traveling signal of the slab catcher turns off, and a series of yarn splicing operations starts. Unlike the case of yarn cutting or yarn breakage for removing yarn defects, since the yarn feeler 9 does not detect the lower yarn, bobbin change is performed and a new yarn supplying bobbin 4 is supplied to the winding position A in FIG. The yarn end Y1 is blown up. Before this blowing operation, the relay pipe 17 of FIG. 5 swivels in the direction and is located below the tenser 7, and sucks and holds the yarn end to be blown up. Simultaneously with the movement of the relay pipe 17, the suction mouth 16 turns in the direction and its suction port 1
6a is located between the traverse drum 13 and the winding package 14, and sucks the yarn end of the winding package 14. When the suction mouth 16 reaches a predetermined position, the traverse drum 13 is rotated by the reverse rotation of the reverse rotation roller or the drive motor in the machine frame 5.
That is, the winding package 14 is reversed to loosen the yarn so that the yarn end is sucked into the suction mouth 16. Next, when the suction mouth 16 and the relay pipe 17, which have sucked the yarn end on the winding package side and the yarn end on the yarn supplying bobbin side, turn in opposite directions and return to the position shown in the drawing, the yarn enters the yarn joining device 15. , Piecing is performed.

In the winding unit 1 described above, one corn or cheese-like winding is performed while removing defective parts such as slabs from the yarn unwound from the yarn supplying bobbin and performing yarn splicing for each yarn supplying bobbin. To form a package
The productivity depends largely on the winding speed. However, in the conventional automatic winder, the practical winding speed is 1
It was around 000 m / min. The reason for this is that as the winding speed increases, the unwinding tension also increases, and especially when the remaining unwinding amount called the third ball becomes 1/3, the unwinding tension increases sharply and the yarn breaks due to the tension. Is generated.

It has been empirically known that the increase in the unwinding tension depends 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.

[0007]

[Problems to be Solved by the Invention] However, 100
When trying to put into practice a high-speed winding of 0 m / min or more,
It was found that it is preferable that the balloon breaker covers the core tube of the yarn feeding bobbin, and that a throttle is provided above the core tube. However, when a balloon breaker having a throttle is used, the yarn end blown up at the time of yarn splicing has to pass through the throttle, and the air flow passing through the throttle is reduced, so that the suction of the yarn end into the relay pipe fails. There is a problem of fear.

The present invention has been made in view of such problems, and an object thereof is to use a balloon regulating member having a diaphragm so as to increase a practical winding speed. An object of the present invention is to provide an unwinding assist device for an automatic winder capable of reliably blowing up the yarn end.

[0009]

In order to achieve the above object, an unwinding assisting device according to the present invention has a core tube having an inner diameter regulating portion smaller than the outer diameter of the yarn layer of the yarn supplying bobbin and larger than the outer diameter of the core tube. An unwinding assisting device, comprising: a lower balloon restricting member that covers the upper part of the core tube; and an upper balloon restricting member that is located above the core tube and has a diaphragm smaller than the outer diameter of the core tube, wherein the diaphragm is openable and closable. is there.

[0010]

When the bobbin is changed and the yarn end is blown up, if the iris is opened, the air passage will not be squeezed and the normal blowing up will be performed.

[0011]

Embodiments 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, the unwinding assisting device 30 includes a cylindrical body 31, 32 as a lower balloon regulating member, a diaphragm mechanism 51 as an upper balloon regulating member, a sensor 33 as a follower mechanism, a cylinder 38, and a controller. 40 is a main member.

The upper and lower sides of the cylindrical body 31 serving as the lower balloon regulating member are open, and the lifting block 3 is provided on the side surface of the cylindrical body 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. This tubular body 31 is located at a distance L1 from the chess portion 4a of the yarn supplying bobbin 4.
Sequentially descends so as to be substantially constant, and covers the core tube 4b of the yarn supplying bobbin 4. Then, by appropriately maintaining the spread of the balloon of the yarn unwound from the chess portion 4a, the unwinding angle is increased, and the role of suppressing the occurrence of sluffing and fluff is fulfilled. In order to sufficiently fulfill such a 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. The inner diameter D of the lower end of the cylindrical body 31 that controls the balloon of the yarn unwound from the chess portion 4a is smaller than the outer diameter of the yarn layer of the yarn supplying bobbin 4,
It must be larger than the outer diameter of the core tube 4b. The inner diameter D of the tubular body 31 should be as close as possible to the outer diameter of the core tube 4b.

A tubular body 32 is inserted around the outer periphery of the tubular body 31, and a diaphragm mechanism 51 as an upper balloon regulating member is attached to the upper side of the tubular body 32. Therefore, the diaphragm mechanism 51 and the cylindrical body 32 descend as the cylindrical body 31 descends sequentially. However, the arm 32 with the slit 32d is provided on the cylindrical body 32.
2c is attached, and the magnet 32 is attached to the lower side of the arm 32c.
b is attached. The slit 32d is guided by the stopper shaft 34, and when the magnet 32b and the arm 32c hit the plate 34a at the lower end of the stopper shaft 34, the lowering of the tubular body 32 is stopped. That is, at the time when the thread tension starts to increase remarkably at the latest, the cylindrical body 32 stops lowering and the throttle mechanism 51 is positioned directly above the core tube 4b. This squeezing mechanism 51 regulates the yarn path,
It serves to prevent a large fluctuation of the balloon from the tubular body 32 to the guide plate 10 and narrow the fluctuation range of the thread tension. In order to sufficiently fulfill the role of the throttle mechanism 51, the size of the throttle portion of the throttle mechanism 51 needs to be smaller than the outer diameter of the top portion of the core tube 4b.

The structure of the diaphragm mechanism 51 will be described with reference to FIG. As shown in FIG. 2, a doglegged lever 51a,
51b is supported by a fulcrum A so as to be horizontally rotatable, and is normally closed by a spring 54. V-shaped levers 51a, 51
drive member 52 arranged so as to face the protruding end on the opposite side of b.
When the tip 52a of the lever advances, the doglegged levers 51a, 5
1b opens in a two-dot chain line and can be located outside the cylinder. The rhombus-shaped thread path restricting space 53 formed by closing the dog-legged levers 51a and 51b is a space that fits within the outer diameter of the top portion of the core tube 4b. When the upper balloon restricting member having a diaphragm having a freely openable and closable structure is used, the yarn end is surely blown up in a two-dot chain line state when the bobbin is changed.

Next, returning to FIG. 1, the sensor 33, the cylinder 38, and the controller 40 as a follow-up 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 sensor 3
The controller 40 which receives the input of 3 operates the switching valve 39, the piston rod 38a of the cylinder 38 is gradually extended, and the distance L1 between the cylindrical body 31 and the chess portion 4a can be kept substantially constant. A diffuse reflection sensor is used as the sensor 33. 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 shorter, and the sensor 33 eventually emits an ON signal. The controller 40 receiving this ON signal stops the piston rod 38a of the cylinder 38 via the switching valve 39.
By repeating this, the cylindrical body 31 descends sequentially with the unwinding.

Next, the operation of the above-described unwinding assisting device 30 will be described with reference to FIG. FIGS. 3A to 3D are views showing how the cylindrical bodies 31 and 32 and the diaphragm mechanism 51 follow unwinding. In FIG. 3A, the solid line cylinders 31 and 32 and the diaphragm mechanism 51 are in the retracted position. In this retracted position, the lower end of the tubular body 31 is above the core tube 4b,
A new yarn supplying bobbin is supplied following the empty bobbin discharge. When the yarn end is blown up, the squeezing mechanism 51 is opened to surely blow up the yarn end. At the start of winding after splicing, the lower end of the tubular body 31 descends to an operating state where it covers the core tube 4b,
The diaphragm mechanism 51 closes. FIG. 3B shows a state of a quintuple coin, in which both the cylindrical bodies 31 and 32 and the diaphragm mechanism 51 are lowered, and the diaphragm mechanism 51 is at 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 coin, in which only the tubular body 31 descends and the tubular body 32 remains stopped, and the diaphragm mechanism 51 is used.
Is 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 two-dot chain 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, the presence of the diaphragm mechanism 51 restricts the upper balloon from the diaphragm mechanism 51 to the guide plate 10 to be small. 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, FIG.
As shown in (d), in the unwinding after the third ball, the cylindrical body 3
No. 1 does not follow the unwinding and remains at the predetermined position. That is, the lower end of the cylindrical body 31 needs to descend sequentially following the unwinding from the beginning of unraveling to the third minute ball, and the diaphragm mechanism 51 extends from the third minute ball to the end of unraveling the core tube 4.
It must stop in place just above b. in this way,
Paying attention to the difference in necessity between the tubular body 31 and the throttle mechanism 51, the tubular bodies 31 and 32 as the lower balloon regulating member and the throttle mechanism 51 as the upper balloon regulating member are divided, and the operation time points are made different. There is.

[0018]

The unwinding assisting device according to the present invention comprises a lower balloon regulating member having an inner diameter regulating portion 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 a lower balloon regulating member covering the core tube. An unwinding assisting device comprising an upper balloon regulating member having a throttle smaller than the outer diameter of the core tube, wherein the throttle is openable and closable, and the throttle is opened when the yarn end is blown up at the time of bobbin change, Since normal blowing is performed, the yarn end can be reliably blown up at the time of bobbin change even when a balloon regulating member having a throttle is used so as to increase the practical winding speed.

[Brief description of drawings]

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

FIG. 2 is a structural diagram of a diaphragm mechanism.

FIG. 3 is an operation diagram of the unwinding assisting device of the present invention.

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

FIG. 5 is a perspective view of a main part of the winding unit.

[Explanation of symbols]

 31, 32 Cylindrical body (lower balloon regulating member) 51 Throttling mechanism (upper balloon regulating member)

Claims (1)

[Claims] 1. A lower balloon regulating member having an inner diameter regulating portion 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 a lower balloon regulating member which covers the core tube and is located above the core tube and smaller than the outer diameter of the core tube. An unwinding assisting device comprising an upper balloon restricting member having an aperture, wherein the aperture is openable and closable.