JP2546119Y2 - Automatic winder unwinding assist device - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION For example, an automatic winder that splices a large number of yarn supplying bobbins produced by a ring spinning machine and winds the yarn into a cone or cheese-like winding package while removing defective portions such as slabs. In particular, the present invention relates to a device capable of supporting a half-ball bobbin.

[0002]

2. Description of the Related Art An automatic winder has a number of winding units arranged side by side.
This will be described below.

In FIG. 5, a winding unit 1 is fixed in position by a support tube 2 and a duct 3, and a yarn Y pulled out from a yarn supplying bobbin 4 positioned and supplied to a predetermined position of the unit is supplied to a balun breaker 6, and Traverse drum 1 passing through a disk or gate type tensor 7 for applying a tension, a slab catcher 8 for detecting a defective portion of the yarn, and the like.
3 is wound around the winding package 14 which rotates.
Reference numeral 15 denotes a yarn splicing device, 16 denotes a suction mouth that guides the upper thread of the package to the yarn splicing device 15, and 17 denotes a relay pipe that guides the lower yarn of the yarn supplying bobbin to the yarn splicing device 15. The unit has each of the above members, and a number of such winding units 1 are arranged side by side to form one automatic winder. Further, the yarn supplying bobbins 4 are supplied to the winding position A of the winding unit 1 via the supply conveyor 11 and the rotating disk 19 while being inserted into the independent trays 18. Then, 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 supplying bobbin 4 at the winding position A
The yarn end Y1 is inserted into the hollow portion of the head of the yarn supplying bobbin 4 so that the yarn Y is blown up and sucked into the relay pipe 17.

In the winding unit 1 described above, when the slab catcher 8 detects a defective portion of the yarn, the attached cutter operates to cut the yarn, and the slab catcher 8 detects the defective portion.
The yarn splicing is performed starting from the yarn running signal OFF. This piecing operation will be described with reference to FIG. In FIG. 6, the suction mouth 16 turns in the direction, and its suction port 16a 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 1 is rotated by the reverse rotation of the reverse rotation roller or the drive motor in the machine frame 5.
3, that is, the winding package 14 reverses to unwind the yarn so that the yarn end is sucked into the suction mouth 16. At substantially the same time as the operation of the suction mouth 16, the relay pipe 17 turns in the direction and is positioned below the tensor 7.
At this time, the tensor 7 is opened, and the yarn end released from the tensor 7 is sucked into the relay pipe 17. In the bobbin change, the yarn blown up from the yarn supplying bobbin and discharged is sucked into the relay pipe 17. Next, when the suction mouth 16 and the relay pipe 17 that have sucked the yarn end on the winding package side and the yarn end on the yarn supplying bobbin turn in the opposite directions and return to the illustrated positions, the yarn enters the yarn joining device 15. The piecing is performed.

By the way, even when the yarn supplying bobbin becomes empty or when the yarn breaks, the yarn splicing operation described above is performed with the yarn running signal OFF of the slab catcher 8 as a starting point.
However, when the yarn supplying bobbin becomes empty, the piecing operation fails because there is no lower thread. Therefore, a yarn feeler 9 for checking the presence or absence of a lower thread is provided below the tensor 7, and if the yarn feeler 9 does not detect the lower thread, a bobbin change is performed in parallel with the splicing operation. This bobbin change is performed by the rotation of the rotating disk 19 (see FIG. 5) and the turning operation of the eject lever, whereby the empty bobbin 4 'is discharged and a new yarn supplying bobbin 4 is supplied. Such a yarn feeler 9 for detecting a lower thread may be mechanical or use an optical sensor.

In the winding unit 1 described above, one cone or cheese-like winding is performed while removing defective portions of the slab from the yarn unwound from the yarn supplying bobbin and performing the yarn splicing for each yarn supplying bobbin. In order to form a package, its productivity greatly depends on the winding speed. However, in a conventional automatic winder, the practical winding speed is 10
It was around 00 m / min. The reason is as follows (a)
This is because the winding speed is limited due to the combination of the phenomena (c) to (c). (A) The unwinding tension increases as the winding speed increases. In particular, the remaining unwinding amount, called a three-piece ball, is 1
The unwinding tension sharply increases from the point of time at / 3, but when the degree of the increase increases, the yarn breaks due to the tension. (B) Sluffing increases as the winding speed increases. The sluffing refers to a state in which a plurality of coils are entangled with each other and unwound at once at a time like a loop-through without being stably unwound from the chess portion 4a of the yarn supplying bobbin 4, leading to yarn breakage. Cause. (C) 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. 5, the balloon of the yarn unwound from the yarn supplying bobbin 4 is limited by a balloon breaker 6 which is a quadrangular pyramid tube, and the balloon is maintained at an appropriate level so as not to spread too much. However, since the balloon breaker 6 is located above the yarn supplying bobbin 4 from below the guide plate 10 and is fixed to the machine base 5, the unwinding of the yarn supplying bobbin 4 proceeds and the yarn supplying bobbin 4 4, the distance from the chess part 4a to the lower end of the balloon breaker 6 gradually increased, and the function of the balloon breaker 6 tended to deteriorate. Therefore, there has been proposed an unwinding assisting device in which the balloon breaker 6 is formed into a cylindrical shape and gradually descends while following the unwinding of the yarn supplying bobbin.

[0008]

However, as shown in FIG. 5, the yarn supplying bobbin supplied to the winding unit 1 is not always in a predetermined constant shape, and is incomplete at a rate of several percent. The thing of a winding shape (what is called a half ball bobbin) may be mixed. In this half ball bobbin 4 ″,
The initial operating position of the balloon breaker 6 is located below normal. As described above, when the balloon breaker 6 is lowered while following the unwinding, when the half-ball bobbin 4 ″ is mixed, the initial operating position of the balloon breaker 6 is not determined, which makes the unwinding assisting device practical. There was a problem that it could not be used.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has as its object to provide an automatic winder unwinding assisting device which can cope with a half bobbin.

[0010]

In order to solve the above problems, the present invention has an inner diameter regulating portion which covers the yarn supplying bobbin,
An automatic winder unwinding assisting device including a balloon restricting member that shifts from a retreat position to a predetermined position following unwinding, and a sensor that detects a chess portion of the yarn supplying bobbin supplied to the winding device. Moving the balloon regulating member until the sensor detects the chess portion, and causing the balloon regulating member to follow the unwinding while detecting the change in the chess portion accompanying the unwinding of the yarn supplying bobbin with the sensor, And a follower mechanism for stopping the balloon regulating member from following the unwinding when the unwinding of the bobbin reaches a predetermined amount.

According to the above arrangement, when the balloon regulating member is moved until the position of the chess portion of the yarn supplying bobbin supplied to the winding position is detected, even if the supplied yarn supplying bobbin is a half ball, The operating position of the balloon regulating member is automatically determined.

[0012]

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

In FIG. 1, the 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 follow-up mechanism, a cylinder 38, and a controller. 40 are the main members.

A cylindrical body 31 as a lower balloon regulating member is open at the top and bottom, and a lifting block 3 is provided on a side surface of the cylindrical body 31.
5 has a first arm 31a to which it is attached. The lifting block 35 is vertically slidably inserted into a rod 37 suspended from the fixed block 36, and the piston rod 3 of a cylinder 38 erected on the fixed block 36.
The cylindrical body 31 can be moved up and down in accordance with the expansion and contraction of the rod 38a of the cylinder 38. This cylinder 31
Descends so that the distance L1 from the chess portion 4a of the yarn supplying bobbin 4 becomes substantially constant, and covers the core tube 4b of the yarn supplying bobbin 4. Then, 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, the unwinding angle is increased, and the role of suppressing the occurrence of sluffing and fluff is achieved.

In order to sufficiently fulfill the role of the cylindrical body 31, the relationship between the dimension of the inner diameter regulating portion, which is the lower end of the cylindrical body 31, and the radial dimension of the yarn supplying bobbin 4 is important. Chess part 4
The inner diameter D of the lower end of the cylindrical body 31 for controlling 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 yarn layer of the yarn supplying bobbin 4 have a conical shape, and the yarn layer has a minimum outer diameter D1 on the upper side thereof, and the outer diameter of the core tube 4b is
Has a diameter d1 larger than the top at the lowermost position (shown by a two-dot chain 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 cylindrical body 31 is as close to d1 as possible. As will be described later, the effect of the sequential lowering of the cylindrical body 31 is up to the third ball, and there is no difference in the degree of the effect regardless of whether it is lowered further or not. Accordingly, the position of the two-dot chain line near the three-pronged ball determined by the length of the piston rod 38a of the cylinder 38 is set as the lowest lower limit position, and the gap between the diameter d1 and the diameter of 2 to 3 mm = the inner diameter D of the cylinder 31. preferable.

An apertured cylinder 32 as an upper balloon regulating member is inserted around the outer periphery of a cylinder 31 as a lower balloon regulating member. Therefore, the cylinder 32 with the throttle is the cylinder 3
It descends with the sequential descending of 1. However, the throttled cylinder 32
Is provided with an arm 32c having a slit 32d, and a magnet 32b is attached to the lower side of the arm 32c. The slit 32d is guided by a stopper shaft 34, and a magnet 32 is inserted into a plate 34a at the lower end of the stopper shaft 34.
When b and the arm 32c hit, the lowering of the throttled cylinder 32 is stopped. In other words, at the point of time when the yarn tension becomes a triangular ball at which the thread tension starts to increase remarkably, the throttled cylinder 32 stops lowering, and the throttle 32a is positioned directly above the core tube 4b. The throttle 32a regulates the yarn path, and a balloon (upper balloon) extending from the cylindrical body 31 to the guide plate 10.
To prevent the large fluctuation of the yarn tension and to narrow the fluctuation width of the yarn tension.

In order to sufficiently fulfill the role of the aperture 32a, the position and shape of the aperture 32a for regulating the yarn path are important. The aperture 32a is 4-180 from the top of the core tube 4b.
mm. If it is less than 4 mm, the throttle 32a will be too close to the core tube 4b, and the yarn path will be unreasonable. If it exceeds 180 mm, it is too far away to regulate the upper balloon. Also, the inner diameter of the aperture 32a is not more than the outer diameter of the top of the core tube 4b and needs to be not less than 2 mm. If the outer diameter of the top portion of the core tube 4b is exceeded, the yarn path is not regulated. If the outer diameter is less than 2 mm, there is a problem in blowing up the yarn. Preferably, the inner diameter is 4 to 6 mm
The aperture is good. Also, since the cylindrical body 32 with the throttle is divided from the cylindrical body 31 and the cylindrical body 31 is inserted into the cylindrical body with the throttle, the cylindrical body 31 and the cylindrical body with the throttle in the standby state at the solid line position. 32 and the total height is reduced. Therefore,
Even with a long bobbin in which the height of the yarn supplying bobbin 4 is high, the distance from the top of the core tube 4b to the guide plate 10 can be reduced, and the use of the unwinding assisting device 30 makes the entire winding unit tall. It is preventing that.

Next, a control method of the unwinding assisting device by the sensor 33, the cylinder 38, and the controller 40 as the following mechanism will be described below. Until the sensor 33 attached to the second arm 31b of the cylindrical body 31 detects the chess part 4a of the half bobbin 4 ″, the controller 40 receiving the input of the sensor 33 operates the switching valve 39, and the piston rod of the cylinder 38 When the sensor 33 detects the chess portion 4a, the cylinder 31 stops at the operating position where the distance between the cylinder 31 and the chess portion 4a is substantially constant L1.
Then, the tubular body 31 gradually descends while following the unwinding by the ON / OFF of the sensor 33. That is, if a sensor that detects the chess unit 4a is used, control that can respond to a half bobbin can be easily performed. As the sensor 33, a diffuse reflection type sensor is used. As a typical example,
A light source composed of an LED and a detector composed of a phototransistor or a photodiode are arranged crosswise or parallel,
There is a type in which light from a light source is diffused and reflected by an object to be detected and detected by a detector. As shown, the chess section 4a
As the unwinding proceeds, the distance from the sensor 33 to the chess unit 4a increases, and the sensor 33 eventually issues an OFF signal. The controller 40 receiving the 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 unit 4a is shortened, and the sensor 33 eventually emits an ON signal. The controller 40 receiving the ON signal switches the switching valve 3
9, the piston rod 38a of the cylinder 38 is stopped. By this repetition, the cylindrical body 31 descends sequentially with unwinding. The sensor 33 for monitoring the chess unit 4a
Is not limited to the horizontal direction, and can be attached at any angle from directly above the chess part 4a to the horizontal.

Next, a yarn unwinding method using the unwinding assisting device 30 will be described with reference to FIG. FIG.
(D) is a figure which shows how the cylinder 31 and the cylinder 32 with a throttle follow unwinding. In FIG. 2A, the solid line cylinder 31 and the throttled cylinder 32 are in the retracted position. In this retracted position, the inner diameter regulating portion at the lower end of the cylindrical body 31 is above the core tube 4b, and a new yarn supplying bobbin is supplied following the empty bobbin discharge. Then, as shown by the two-dot chain line, even with the half-ball bobbin 4 ″, the distance from the chess unit 4a drops to the operating state of L1. FIG. In this case, both the cylinder 31 and the throttle-equipped cylinder 32 are lowered, and the aperture 32a is at a predetermined position.
Descends so as to follow the unwinding of the chess unit 4a, the unwinding angle θ of the yarn unwound from the chess unit 4a is kept large, and the yarn remaining on the yarn supplying bobbin and the unwound yarn As a result of less rubbing, the occurrence of sluffing and fluff is suppressed. FIG. 2 (c) shows the state of the three-piece ball that has been further unwound, in which only the cylindrical body 31 is lowered, the throttled cylindrical body 32 remains stopped, and the throttle 32a is positioned directly above the core tube 4b. It is a predetermined position. In particular, there is a tendency for the unwinding tension to increase sharply after the third-divided ball, but this is caused by a large balloon such as a two-dot chain line appearing on the yarn unwound from below the chess portion 4a and from above the chess portion 4a. This is because small balloons appearing in the unwound yarn alternately appear. However, the presence of the throttle 32a restricts the size of the upper balloon from the throttle 32a to the guide plate 10 to be small. In addition, after the third ball, the shape of the chess portion 4a starts to gradually collapse, and even if the cylindrical body 31 is further lowered, there is no difference in the effect of suppressing the sluffing and the fluff. Therefore, as shown in FIG. 2D, in unwinding after the third ball, the tubular body 31 remains at a predetermined position without following the unwinding. That is, the inner diameter regulating portion at the lower end of the cylindrical body 31 needs to descend sequentially following the unwinding from the start of unwinding to the three-piece ball.
It is necessary that a stays at a predetermined position directly above the core tube 4b from the third ball to the end of unwinding. Thus, the cylindrical body 31
Focusing on the difference between the necessity of the diaphragm 32a and the restrictor 32a, the cylinder 31 is divided into a cylindrical body 31 as a lower balloon restricting member and a restrictor 32a as an upper balloon restricting member.

FIG. 3 is a diagram showing an unwinding assisting device used for another control method. The difference from FIG. 1 is that a motor 42 and a screw shaft 43 are used instead of the sensor 33 and the cylinder 38, and the motor 42 is controlled by the controller 40 via the host computer 41.

In FIG. 3, the cylinder 31 is connected to the controller 4.
Following the unwinding based on the rotation control of the motor 42 by 0, a constant distance L1 from the chess unit 4a is maintained. Therefore, the host computer 41 is connected to the controller 40, and the lowering speed of the cylinder 31 to be output by the controller 40 is determined. The procedure of the host computer 41 will be described with reference to FIG. First,
As a precondition, the yarn count of the yarn to be wound is input (step # 1). Further, the weight of the yarn of the yarn supplying bobbin is measured, for example, before entering the winding unit, and this weight data is automatically inputted (step # 2). Instead of the weight data, the thickness of the yarn layer can be measured by a sensor and the yarn layer data can be input. In addition, the winding speed pattern of the winding unit is also input (step ♯).
3). Further, the dimensions of the core tube of the yarn supplying bobbin supplied to the winding unit are also input (step # 4). Then, the yarn length of the yarn supplying bobbin is calculated from the yarn count in step # 1 and the weight of the yarn in step # 2 (step # 5). The time required for unwinding is calculated from the yarn length and the winding speed in step # 3 (step # 6). The lowering speed of the cylindrical body is calculated from the unwinding time and the core tube size in step # 4 (step # 4).
7).

When the half bobbin is mixed, the operating position of the cylinder needs to be lowered accordingly. However, the operating position of the cylinder is not determined only by the unwinding time described above. Therefore, in step # 8, the shape of the yarn supplying bobbin is recognized. For example, in the case of an arrangement provided at the entrance of the supply conveyor, the height of the chess section is detected by a sensor having a transmission type photoelectric sensor arranged in a row, and a chess section is attached to a magnetic plate stretched on a tray for a special half ball or the like. Write the height of Each winding unit is provided with a magnetic plate reading device. The operating position of the cylinder is determined based on the information from the reading device (step # 9).

The above steps # 1 to # 7 and step # 8
9 are preparation stages. Then, when winding is started (step # 10), the tubular body is lowered from the retracted position to the operating position (the first operating position determined from the core tube size and the information in step # 9) (step # 11). Then, the cylinder descends sequentially at the descending speed calculated in advance in step # 7 (step # 12).

In the meantime, the above-described unwinding assisting device follows the unwinding by lowering the tubular body with reference to the unwinding time.
Movement independent of normal sequential descent is required. Therefore, an efficient movement of the cylindrical body without lowering the winding efficiency will be described below. In FIG. 3, when the yarn traveling signal from the slab catcher 8 is turned off, a series of yarn joining operations is started. Starting from the turning off of the thread running signal, the cylinder 31 quickly rises to the retracted position indicated by the solid line. That is, a series of splicing operations and the raising of the cylinder 31 are performed in parallel.
Then, a series of piecing operations are performed. When the yarn splicing is successful and the yarn starts to be wound, the yarn running signal from the slab catcher 8 changes to ON. Starting from the ON of the thread running signal, the operation shifts to the lowering operation of the cylindrical body 31, and the cylindrical body 31 stops when it comes into contact with the chess part 4a. Then, the cylindrical body 31 rises by a predetermined amount L1, and thereafter follows the unwinding at a predetermined lowering speed. As described above, when the unwinding assisting device operates based on the OFF or ON of the yarn traveling signal from the slab catcher 8, the movement of the tubular body 31 is not wasted.

[0025]

As described above, the present invention is directed to an automatic winder having an inner diameter regulating portion that covers the yarn supplying bobbin and a balloon regulating member that shifts from a retracted position to a predetermined position following unwinding. An unwinding assisting device, and a sensor for detecting a chess portion of the yarn supplying bobbin supplied to the winding device, and shifting the balloon regulating member until the sensor detects the chess portion, and unwinding the yarn supplying bobbin. A follow-up mechanism that causes the balloon regulating member to follow the unwinding while detecting a change in the chess portion accompanying the sensor, and stops following the unwinding of the balloon regulating member when the unwinding of the yarn supplying bobbin reaches a predetermined amount. Is provided.

Thus, even if the supplied yarn supplying bobbin is a half bobbin, the operating position of the balloon regulating member is automatically determined, and a half bobbin can be used.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a yarn unwinding method by the present invention device.

FIG. 3 is a perspective view of another unwinding assisting device of the present invention.

FIG. 4 is a flowchart of another control method.

FIG. 5 is a device layout diagram of a winding unit.

FIG. 6 is a perspective view of a main part of the winding unit.

[Explanation of symbols]

 Reference Signs List 30 unwinding assist device 31 cylinder (lower balloon regulating member) 33 sensor 41 host computer

Claims (1)

(57) [Scope of request for utility model registration] An inner diameter regulating portion covering the yarn supplying bobbin;
An unwinding assisting device for an automatic winder comprising a balloon regulating member that shifts from a retreat position to a predetermined position following unwinding, and a sensor that detects a chess portion of the yarn supplying bobbin supplied to the winding device. Moving the balloon regulating member until the sensor detects the chess portion, and causing the balloon regulating member to follow the unwinding while detecting the change in the chess portion accompanying the unwinding of the yarn supplying bobbin with the sensor; An unwinding assisting device for an automatic winder, further comprising a follow-up mechanism for stopping the balloon regulating member from following the unwinding when the unwinding of the bobbin reaches a predetermined amount.