JPH05766A - Taking-up unit for automatic winder - Google Patents

Abstract

PURPOSE:To provide the taking-up unit of an automatic winder 1 can reduce the yarn cut due to the peak tension of the yarn tension. CONSTITUTION:The taking-up unit of an automatic winder is constituted so that a gate sensor 20 for the meshing between a pair of comb-seed bodies 21 and 22 is arranged in yarn passage for taking up yarn reeled off a yarn feeding bobbin on a taking-up package.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] For example, an automatic winder used for winding between a spinning machine and a loom, and removing a defective portion such as a slab or nep in a yarn unwound from a yarn supplying bobbin into a predetermined amount of a winding package. Regarding the take unit.

[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 suction pipe 3, and a yarn Y drawn from a yarn supplying bobbin 4 positioned and supplied to a predetermined position of the winding unit 1 is a balloon. After passing through a breaker 6, a disk tenser 7 that applies a predetermined yarn tension, a slab catcher 8 that detects a defective portion of the yarn, and the like, the traverse drum 13 winds a winding package 14 that rotates. Reference numeral 15 is a yarn splicing device, and 16 is a yarn splicing device 1 for the yarn on the package side.
5 is a suction mouth, and 17 is a relay pipe for guiding the yarn on the yarn supplying bobbin side to the yarn joining device 15. Each winding unit 1 has the above-mentioned members. A large number of units are installed side by side to form one automatic winder.

In the winding unit 1 described above, the disk tenser 7 applies a thread tension, and the thread tension varies depending on the thread type and the specification, but in general, the single thread strength is 8 to 8.
A thread tension of 12% is applied. The disc tensor 7 is unitized as a tensor box 9 attached to the machine casing 5. This tensor box 9 will be described with reference to FIG. The disc tensor 7 is arranged such that the second disc 7 attached to the swing lever 7c is different from the first disc 7a.
It is arranged such that b can be pressed. Swing lever 7
A spring for biasing c applies a predetermined thread tension to the thread sandwiched between the first and second disks 7a and 7b. The urging force of the spring for the rocking lever 7c can be adjusted by the dial 7d. The first disk 7a is gradually rotated by the motor 7e, and the disks 7a and 7b are rotated.
It discharges lint and cotton wool that are trying to accumulate between them. Reference numeral 10 is a waxing wax, and 11 is a yarn feeler for detecting the presence or absence of a lower thread during yarn joining.

Further, as shown in FIG. 4, the thread passing portion on the side surface of the tensor box 9 may be covered with a cover 19. The cover 19 is a cover that covers the four sides and the upper surface of the passage portion of the yarn Y, the lower surface is an opening, and the upper surface is connected to the suction pipe 3 so as to suck the cotton wool generated around the tensor together with the suction flow. Is becoming During the yarn splicing operation, a slit is formed in the cover 19 or the cover 19 can be opened and closed for threading.

[0006]

In the winding unit of the automatic winder described in the prior art, the winding unit of 1200 m /
Frequent yarn breakage occurs at high speed winding of min or more.
It was practically impossible to wind at a yarn speed such as 0 m / min. As a result of pursuing the cause of thread breakage at high speed,
When the thread breaks at the peak tension of the thread tension (A in Fig. 2 (b))
It was found that it is likely to occur in (see point).

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to wind an automatic winder capable of reducing the yarn breakage caused by the peak tension of the yarn tension. It is intended to provide a taking unit.

[0008]

In order to achieve the above object, a winding unit of an automatic winder according to the present invention is provided with a yarn path on the way of winding a yarn unwound from a yarn supplying bobbin into a winding package. It is characterized in that a gate tensor for engaging a pair of comb-shaped bodies is provided.

[0009]

[Function] When the yarn path is bent in a zigzag shape by the meshing of a pair of comb-like bodies and the thread tension is applied, the meshing degree decreases as the thread tension increases, and the thread tension decreases, and the meshing decreases when the thread tension decreases. The yarn tension compensation is performed in such a manner that the degree increases and the tension increases.

[0010]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a gate tensor in the winding unit of the present invention.

In the winding unit 1 described with reference to FIG.
The gate sensor 20 of FIG. 1 is used instead of the disc tensor 7. In FIG. 1, the gate tensor 20 includes a pair of first comb-like bodies 21 and a second comb-like body 22 which can be meshed with each other and face each other. Each of the comb-like bodies 21 and 22 is formed by laterally projecting three combs 23 and 24 at equal intervals so that they can be engaged with each other.
The first comb-shaped body 21 is fixed to the bracket 25 with a bolt,
The bracket 25 is fixed to the side surface of the tensor box (not shown). The second comb-shaped body 22 is fixed to a swing lever 26 with a bolt and is swingable around an axis XX. A connecting rod 27 is hooked on the arm 26a on the opposite side of the swing lever 26, and the tip of the connecting rod 27 is inserted into an eccentric shaft 28a of an eccentric lever 28. The eccentric lever 28 is connected to a rotary solenoid 29. The solenoid 29 operates the movable piece by using a magnetic attraction force obtained by energizing the coil, and can output a rotation torque according to the applied voltage.

The tips of the combs 23, 24 are curved in a dogleg shape so that the yarn Y does not escape. Then, as shown in FIG. 1A, the movable combs 23 are positioned between the fixed combs 24 so that the combs mesh with each other. In this meshed state, the yarn Y is bent zigzag. Comb 2
The degree of meshing between 3, 24 is determined by the swing torque of the swing lever 26 applied by the solenoid 29, and the magnitude thereof can be adjusted by the voltage applied to the solenoid 29. Therefore, for example, the solenoids 29 of the winding unit of 12 weights can be collectively controlled by one control device to finely adjust the yarn tension.

Next, the operation of the above-mentioned gate sensor 20 will be described below. At the start of winding or when the yarn is broken, the solenoid 29 rotates the eccentric lever 28 in the direction, and the swing lever 26 swings in the direction via the connecting rod 27.
The comb bodies 21 and 22 are opened. In this state, threading and splicing are performed. Then, after the yarn Y passes, the solenoid 29 rotates the eccentric lever 28 in the direction, the swing lever 26 swings in the direction via the connecting rod 27, and the comb-shaped bodies 21 and 22 are moved to the direction shown in FIG. As described above, the yarn Y bends in a zigzag manner, and a yarn tension commensurate with the degree of bending is applied. When the thread passing through has a thick portion and the thread tension temporarily increases, if the rotation torque of the solenoid is constant, the comb 23,
The meshing degree of 24 is reduced, and the thread tension is reduced.
On the contrary, when the thread passing through has a thin portion and the thread tension is temporarily reduced, if the rotational torque of the solenoid is constant, the degree of meshing between the combs 23 and 24 increases as the thread tension increases, Thread tension increases. In this way, the gate sensor 20 has a function of compensating for an increase or decrease in yarn tension.

The effect of this yarn tension compensation function will be described with reference to FIG. Fig. 2 shows the number 30 card thread is 1200 m / m
FIG. 3 is a graph showing a change over time in yarn tension variation when wound with in, FIG. 2 (a) shows the case of using the gate tensor of the present invention, and FIG. 2 (b) shows the case of using a conventional disc tensor. Show. When a disc tensor is used, peak tension such as point A occurs in places. However,
When the gate tensor is used, the peak tension disappears only with a stable fluctuation due to the unwinding yarn moving up and down the chess portion of the yarn supplying bobbin. As a result, under the same winding condition, the maximum winding speed can be increased by using the gate tensor.

The gate sensor 20 is a thin comb 2
3 and 24 are mainly used, and the inertia during operation is small, so that the followability is excellent and, for example, looseness does not occur even when a thick portion of the thread passes through. Therefore, the fine adjustment of the thread tension can be stably performed by the magnetic attraction force of the solenoid 29. If the cover 19 shown in FIG.
Sufficient suction airflow also flows between 3, 24 and the combs 23, 2
It is possible to prevent dust and thread waste from accumulating in the No. 4.

Next, an unwinding assisting device for further increasing the winding speed will be described with reference to FIG. When this unwinding assisting device is used in combination with the gate tensor of the present invention, 1600 m /
High-speed winding up to min is also possible. The unwinding assisting device 30 mainly includes a first tubular body 31 having a diaphragm 31a, a second tubular body 32 covering the first tubular body 31, and a sensor 33 attached to a second arm 32a. It is a thing. The first tubular body 31 has an arm 31c with a magnet 31b, and the plate 34a of the stopper shaft 34 stops the first tubular body 31 from lowering so that the upper end of the yarn feeding bobbin 4 and the squeeze 31a do not interfere with each other. . The first arm 32 a of the second tubular body 32 is attached to the elevating block 35. The lifting block 35 is a rod 37 suspended from a fixed block 36.
Is connected to a piston rod 38a of a cylinder 38 that is inserted into the fixed block and is erected on the fixed block, and the second tubular body 32 can be raised and lowered according to the expansion and contraction of the cylinder 38. Then, the sensor 33 attached to the second arm 32b measures the chess portion 4a of the yarn feeding bobbin 4, the sensor 33 operates the servo valve 39, and the piston rod 38 of the cylinder 38 is operated.
a gradually extends, and the distance L1 between the second cylindrical body 32 and the chess portion 4a is kept substantially constant. When the unwinding assisting device 30 is used, as shown by the curve B in FIG. 2A, the increase in the yarn tension at the end of unwinding is suppressed to about 60%, and the yarn breakage is reduced accordingly. It is possible to further increase the winding speed.

[0017]

The tensor of the automatic winder according to the present invention has a gate tensor for engaging a pair of comb-like bodies in the yarn path on the way of winding the yarn unwound from the yarn supplying bobbin into the winding package. As the thread tension increases, the meshing degree decreases and the tension decreases.When the thread tension decreases, the meshing degree increases and the tension increases, and the thread tension compensation is performed, so the peak tension disappears.
Since thread breakage due to peak tension is reduced,
Higher speed winding is possible accordingly.

[Brief description of drawings]

FIG. 1 is a perspective view of a gate tensor in a winding unit of the present invention.

FIG. 2 is a graph showing fluctuations in yarn tension.

FIG. 3 is a perspective view of an unwinding assisting device.

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

FIG. 5 is a diagram showing a conventional disk tensor.

[Explanation of symbols]

 4 yarn feeding bobbin 14 winding package 20 gate sensor 21, 22 comb-like body 29 solenoid

Claims (1)

Claim: What is claimed is: 1. A gate tensor for engaging a pair of comb-shaped bodies is arranged in a yarn path during winding of a yarn unwound from a yarn supplying bobbin into a winding package. Automatic winder take-up unit.