JPH08133602A - Doffing method and its device for automatic winder - Google Patents

Abstract

PURPOSE: To provide a doffing method of an automatic winder capable of efficiently performing doffing by the automatic winder when a pair of packages formed by the automatic winder, which are differed from each other in the yarn length, are supplied to a double twisting frame. CONSTITUTION: Plural sets of take-up units, each of which comprises a set of take-up units A, B forming packages differed from each other in the yarn length, are installed in a row to form an automatic winder. Proposed method and device are concerned with a doffing method of the automatic winder for doffing one set of packages and a device for performing the doffing method at the time when a pair of the packages differed from each other in the yarn length are formed by at least one set of take-up units.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doffing method for an automatic winder capable of smoothly supplying two types of packages having different yarn lengths when a package formed by the automatic winder is supplied to a double twisting machine. .

[0002]

2. Description of the Related Art In a double twisting machine, two packages are stacked vertically in an axial direction thereof and inserted into a single spindle, and the yarns of both packages are guided upward and passed through an upper end opening of the spindle through the inside thereof. It is guided to the lower side, led out to the outside from the lower side of the rotary disk, guided to the upper side while contacting the outer circumference of the rotary disk, and wound up in a package by a winding machine provided above while forming a predetermined balloon.

At this time, when the yarns of the upper and lower packages inserted into the spindle are unwound and drawn into the upper opening of the spindle, the yarns from the lower package are swayed to the outer periphery in a state of being longer than the yarns of the upper package. Since the yarn is unwound, the yarn unwound from the lower package is subjected to a larger centrifugal force than the yarn unwound from the upper package, and a large tension is generated. Therefore, the tension of the yarn unwound from the package is higher in the lower package, and the unwound yarn extends, so that when the lower and upper packages are unwound at the same yarn length at the same time,
The upper package disappears about one minute earlier, and the yarn of the lower package remains. Therefore, if the lower package is removed together with the upper empty bobbin, the yarn remaining in the lower package is wasted.

As a countermeasure, the yarn length of the upper package is set to be 0.5 to 1% longer than the yarn length of the lower package. Therefore, two types of packages having different yarn lengths are used in the double twisting machine. It is being supplied as a pair.
Therefore, in an automatic winder arranged close to a double twisting machine, many winding units are divided into two zones, the same zone forms the same package, and different zones form different types of packages. A long yarn length package formed in one zone and a short yarn length package formed in another zone are combined one by one to form a pair of double twisting machine packages. It was transported and supplied.

[0005]

SUMMARY OF THE INVENTION In the above conventional apparatus, a package having a long yarn length and a package having a short yarn length used in a double twisting machine are formed in separate zones of an automatic winder, and these are combined to form one set. In the case of a package for a double twisting machine, after winding one package in a zone that forms a package with a long yarn length, among the winding units arranged in a row in one winder, Waits until the packages are doffed in the zone that forms short packages, and only these two packages are conveyed to the end of the line by the conveyor installed along the winder and supplied as a pair of double twisting machine packages. The work to do is repeated. Therefore, the conveyor arranged in one winder can always convey only one pair of packages, and even if one pair of packages is formed during the conveyance of the packages, the conveyor does not convey the pair of packages. Can not be dropped on the conveyor and must wait until it is transported to the end of the row. If the number of standby packages increases and the standby time increases, the operating efficiency of the factory decreases.

Therefore, according to the present invention, when a pair of packages having different thread lengths formed by the automatic winder is supplied to the double twisting machine, the automatic winder can efficiently doff the doffing. The purpose is to provide a doffing method.

[0007]

In order to solve the above-mentioned problems, the present invention provides an automatic winder by arranging a plurality of winding unit groups, one winding unit forming a package having a different yarn length. When a pair of packages having different yarn lengths is formed by one winding unit in a set, the doffing method of an automatic winder is to doff the pair of packages. 1 is a configuration of an apparatus for carrying out the method.

[0008]

Since the present invention is constructed as described above, when a pair of packages having different yarn lengths is formed in one winding unit set, the pair of packages are doffed on the conveyor. , At the same time, or when a pair of packages having different yarn lengths is formed in a set of another winding unit during the conveyance of the package by the conveyor, the pair of packages are also doffed on the conveyor and conveyed at the same time. It

[0009]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a part of the arrangement of an automatic winder to which the present invention is applied. The first winding unit A forms a package having a short yarn length and the second winding unit B forms a package having a long yarn length. Are arranged adjacent to each other, and the pair of winding units A and B constitutes one set of winding unit P. A plurality of sets of this winding unit are arranged in a row to form an automatic winder Q of one row, and a control unit R and a drive unit S are provided at the ends of the row.

The automatic winder Q in one row is provided with a doffing device T capable of traveling along the row of the winding unit and a conveyor U for carrying the doffed package, and the control device in the control unit R. Allows the doffing device to travel to the fully wound winding unit to perform a predetermined doffing operation such as replacement with an empty paper tube, and temporarily stop the doffed package directly on the conveyor U or with a stopper. Then transfer to the conveyor,
It is conveyed to the end of the drive unit by a conveyor.

As shown in FIG. 2, the winding unit 1 in the above apparatus winds the yarn of the bobbin 3 supplied below the machine base 2 while traversing the package 5 which is in pressure contact with the traverse drum 4 and rotates. When the bobbin is empty, the actual bobbin is supplied, the yarn is spliced, and the yarn is rewound to form a package in which a predetermined length of yarn is wound.

On the other hand, in a double twisting machine for double twisting using a package formed by an automatic winder, as shown in FIG. 3, a pair of upper and lower packages is inserted into and supported by a spindle 7, and each package is supported. The thread end is guided downward through the tip opening of the tensor top 8 at the upper end of the spindle 7 into the lower part of the rotary disk 10 provided at the lower end of the spindle 7, and the outer periphery of the cup-shaped cover at the outer periphery of the package is moved upward. The thread guide 11 is guided through the tape and is wound up on the package provided above the thread guide 11. Thereby,
The yarn wound in the package and pulled is unwound from the outer periphery of the lower package 5-A and the upper package 5-B, passes through the spindle, and rotates the rotary disc 1
It is guided by coming into contact with the outer circumference of 0 and forming a predetermined balloon, and is wound up through the thread guide 11.

At this time, since the yarn Y-2 unwound from the lower package 5-A has a longer distance to the tensor top 8 than the yarn Y-1 unwound from the upper package 5-B, the yarn Y-2 unwound from the package is unwound from the package. When this is done, the centrifugal force of the yarn rotating on the outer periphery of the package becomes larger than the centrifugal force of the yarn unwound from the upper package 5-B, whereby the lower package 5
A large tension acts on the yarn unwound from -A to elongate it. Therefore, if the upper package 5-B and the lower package 5-A have the same yarn length, even if all the yarns of the upper package 5-B are unwound, the lower package 5
The yarn of -A will remain, and this residual yarn will be wasted when it is discharged together with the empty bobbin in the upper stage. Therefore, a package having a long yarn length of 0.5 to 1% is used in the upper stage, and therefore, in the automatic winder forming this package, the package 5-B having a long yarn length is used.
It is necessary to form two types of packages, that is, a package 5-A having a short yarn length, and to supply them to the double twisting machine as a pair.

Therefore, in the automatic winder 1, the first winding unit A forms the package 5-A having a short yarn length, and the second winding unit B forms the package 5-B having a long yarn length. Are arranged to
In the control unit R, the package is not discharged to the conveyor U even when the winding unit on one side is full, and the package 5 is set at 1 o'clock with the stopper 13 protruding as shown in FIG. When it is made to stand by here, and when the winding unit on the other side is full, the stopper 13 is released and the package 5 is transferred to the conveyor U, and at the same time,
The full package of the other side is also transferred to the conveyor U. As a result, on the conveyor U, the package 5-B having a long yarn length and the package 5-A having a short yarn length are conveyed while being placed adjacent to each other by the conveyer, and are conveyed to the end of the automatic winder. After that, it is supplied to the factory side of the double twisting machine by another transfer device or transfer device (not shown). In the double twisting machine, a pair of packages is hung as it is to form a twisted package.

At this time, when a pair of packages is simultaneously formed in another set of winding units, those packages may be transferred to the conveyor at the same time. When a pair of packages is formed by another set of winding units while the packages are being conveyed by the conveyor, the control device can discharge the packages to the conveyor in a period that does not interfere with the packages being conveyed. Therefore, a plurality of sets of packages can be conveyed by one conveyor.

In the above-mentioned embodiment, an example is shown in which a pair of packages having different yarn lengths are arranged adjacent to each other and a plurality of them are arranged in a row as one set of winding unit. As shown in FIG.
A plurality of winding units, for example, three are adjacent to each other, and then three first winding units are also adjacent to each other, so that a total of three pairs of packages can be formed one by one, and these three unit groups are adjacent to each other. Alternatively, a plurality of such winding units may be provided in a row to form an automatic winder in one row. The numbers of the first winding unit and the second winding unit in one set may be different.

In this case, when one package of the first winding unit and one package of the second winding unit are formed in one set, these packages are doffed and the doffed on the conveyor. After that, even if another pair of packages is formed in the same group, it is not immediately doffed on the same conveyor, and after detecting that there is no other package within the predetermined length on the conveyor, the balls are detected. Fry. Similarly, in another set of winding units, even when a pair of packages is formed and doffed, it interferes with the pair of packages doffed earlier on the conveyor more than in the above embodiment. It is necessary to control the doffing so that there is nothing to do.

[0018]

EFFECTS OF THE INVENTION Since the present invention is constructed and operates as described above, when a pair of packages having different yarn lengths formed by an automatic winder is supplied to a double twisting machine, the automatic winder is operated on one conveyor. Multiple sets of packages can be conveyed at the same time, and doffing can be efficiently performed, so that the operation efficiency of the factory is improved.

[Brief description of drawings]

FIG. 1 is a schematic plan view of an automatic winder according to an embodiment of the present invention.

FIG. 2 is a side view of a winding unit of an automatic winder to which the present invention is applied.

FIG. 3 is a side view showing an essential part of a double twisting machine that supplies a package formed by an automatic winder to which the present invention is applied.

FIG. 4 is a schematic plan view of an automatic winder according to another embodiment of the present invention.

[Explanation of symbols]

 A 1st take-up unit B 2nd take-up unit Q Automatic winder R Control unit S Drive unit T Doffing device U Conveyor 1 Take-up unit 2 Machine stand 5 Package 7 Spindle 8 Tensor top 10 Rotary disc 13 Stopper

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Claims (3)

[Claims] 1. An automatic winder is formed by arranging a plurality of winding unit groups, each including one winding unit forming a package having a different yarn length, to form an automatic winder. A doffing method for an automatic winder, which comprises doffing a pair of different packages when they are formed. 2. An automatic winder is constructed by arranging a plurality of sets of winding units in which winding units forming packages having different yarn lengths are alternately adjacent to each other to form an automatic winder. An automatic winder doffing device comprising a doffing device that, when formed, conveys the set of packages as a pair by a conveyor arranged along a row of doffing and winding units. 3. A plurality of adjacent first winding units that form a package of the same yarn length are provided, and a plurality of second winding units that form a package of the same yarn length different from the yarn length of the first winding unit are provided. , An automatic winder is constructed by arranging a plurality of these winding unit groups as one set adjacent to each other.
When a pair of packages different in yarn length from each other is formed in the set, a doffing control device is provided which conveys the pair of packages as a pair by a conveyor arranged along the row of the doffing unit. Automatic winder doffing device.