JP3047838B2 - Doffing system for false twisting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a doffing system for a false twisting machine that manages packages by the amount (length) of yarn, and more particularly to a doffing system for a false twisting machine that can manage broken yarn packages. It is.

[0002]

2. Description of the Related Art In a textile machine having a large number of winding weights, a doffing device for taking out a package and supplying an empty paper tube is a traveling doffer for successively doffing a bogie traveling along a machine base. Although it has been used in the past, recently, a single weight independent autodoffer which is easier to install than a traveling type doffer, is more versatile, and can doff each weight has come to be used. I have. The single weight independent type autodoffer is a doffing mechanism provided for each of the winding weights, a common driving shaft for supplying a driving force to these doffing mechanisms, and a weight for connecting the doffing mechanism to the driving shaft. Each clutch is provided with a stocker for storing a package. The operation procedure of each part of the doffing mechanism is associated with the rotation angle of the cam rotated by the drive shaft, and the weight connected to the drive shaft by the clutch can advance the doffing operation. Further, the fried package is paid out to a stocker provided on the rear surface of the machine.

[0003]

Normally, the amount of yarn wound on a package is controlled by the length of a fixed length device. As the fixed length device, a doffing timer for managing a winding time and a method of integrating and managing the number of rotations of a paper tube are known. For example, in the case of the doffing timer, since the yarn is wound at a constant speed, the length is controlled by the winding time. Therefore, when the yarn is wound up to a predetermined length, the package is full and doffed. Further, in a false twisting machine or the like, when there is a yarn break, it is common to doff the package at that point and supply an empty paper tube to start a new winding. Therefore, in the package that has been doffed, a package that is full and a package that has been doffed by a thread break (a thread break package) are mixed.

Since small balls having a small winding amount are unsuitable as products, it is easier to manage the package by removing them before passing them to the next inspection step or boxing step. However, when such a task of sorting small beads is performed by an operator, there is a problem that determination and sorting are troublesome, and the judgment tends to be subjective and the evaluation varies.

Accordingly, an object of the present invention is to solve the above problems and to provide a doffing system for a false twisting machine capable of managing a yarn breakage package.

[0006]

In order to achieve the above-mentioned object, the present invention has a detecting means for detecting the size of a package. It is to distinguish.

[0007] One package is paid out,
The other package may be held floating from the winding roller.

[0008] The standard for distinguishing the package into large and small balls may be settable between the size of the full package and the size of the empty paper tube.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings.

The false twisting machine shown in FIG. 4 equipped with the doffing system of the present invention has a machine base 41 in which a large number of winding weights are arranged vertically and in multiple stages and in a horizontal line. A yarn supply creel 42 constituting a yarn system is provided. The machine base 41 has a yarn cutter 43 for cutting the yarn at the intake of the yarn supply Y,
A first feed roller 44 is provided. As a processing system, a primary heater 45 for heating the yarn, a smoke exhaust duct 46, and a cooling plate 47 for cooling the yarn are provided above the first feed roller 44, and on the front side of the machine base 41,
A pre-twister guide 48, a nip twister 49 for twisting the yarn, a TCS 50 for adjusting the yarn tension, a second feed roller 51, a secondary heater 52, a third feed roller 53, and a yarn feeler 54 for detecting the presence or absence of the yarn are provided. Have been. Further, the machine base 41 includes the oiling roller 5.
5, a take-up winder 56 constituting a winding system, and a single spindle independent type doffing device 57 are provided.

As a passage for the worker, a maintenance passage 58 is provided on the front side of the machine base 41, and a full ball collection passage 59 is provided on the back side. The stocker 60 is desired to be in the full ball collection passage 59.

As shown in FIG. 1, a doffing system using the above-mentioned single weight independent type doffing device 57 comprises a doffing mechanism 3 provided on each of a number of winding weights 2 constituting a false twisting machine. And drive shafts 4, 5, 6 common to the respective weights provided over the plurality of winding weights 2 so as to supply a driving force to the doffing mechanism 3, and the doffing mechanism 3 of the weight 2 is attached to the drive shaft. Electromagnetic clutches 7, 8, 9 for connecting
A detecting unit for detecting the size of the package 10 and a separating unit for distinguishing the package 10 into large balls and small balls at the time of doffing are provided. This classification means can change the standard for distinguishing the package 10 into large balls and small balls from the size of a full ball to the size of an empty paper tube.

The take-up weight 2 includes a take-up roller 12 for rotating the paper tube or package 10 by frictional contact, a cradle 11 for holding the paper tube or package 10, and a traverse device for traversing the yarn to be wound. 13 are provided. The winding weight 2 is provided with a doffing timer (constant length device) 18 for measuring the winding length.
The package 10 is managed in a fixed length. That is, the full length is detected by measuring the winding length of the yarn traveling at a constant speed with time, and the electromagnetic clutch is operated to doff.

The doffing mechanism 3 performs operations such as opening and closing and expanding the cradle 11, operations for supplying an empty paper tube to the cradle 11, operations for hanging a thread on the paper tube held by the cradle 11, and the like. These operations are performed according to the rotation angle of the cam. The take-up weight 2 is provided with a push button PB, and the stop of the cam can be resumed by the push button PB.

The separating means of the present invention performs a doffing operation by distinguishing a package into a large ball and a small ball when a yarn breaks. Here, the large packages are paid out to the stocker in the same manner as the full packages, and the small packages are held floating from the winding roller 12. The detecting means for detecting the size of the package may be a position or distance sensor for detecting the amount of rise of the cradle 11 due to the growth of the package, or an outer diameter sensor for measuring the outer diameter of the package. Here, the doffing timer 18 is used as the detecting means. A reference value B is provided in order to use the doffing timer 18 for measuring the amount (length) of the yarn as a size detecting means for distinguishing a large ball from a small ball. Reference value B
Is usually set as A>B> 0, but it is also possible to set B = 0 or B ≧ A.

The operation of the doffing system when the full ball value A and the reference value B (A>B> 0) are set is described in the outline of the processing procedure in the continuous operation mode in FIG. 3 and in the false twisting machine in FIG. Explanation will be given according to the entire layout. In the continuous operation mode, doffing is performed every time the doffing timer 18 detects a full load, an empty paper tube is supplied, and a new package 10 is continued.
This is a mode of a normal doffing operation for winding up.

1. When the count value X of the full package doffing timer 18 reaches the full value A, a normal doffing operation is performed and the package 10 is paid out to the stocker 60. In the normal doffing operation with full balls, first, the cradle 11 is raised, and the package is discharged by opening the cradle 11 at that position, and then the cradle 11 grips an empty paper tube. Then, the cradle 11 is lowered to bring the paper tube into frictional contact with the winding roller 12, and the yarn is hooked on the end of the paper tube by turning the threading arm 23. Thereafter, the winding is restarted by the rotation of the winding roller 12 and the traverse of the traverse device 13.

2. In the continuous operation mode, the doffing timer 18 is used.
If a yarn break occurs before the yarn is detected to be full, the yarn feeler 54 detects the yarn break and cuts the yarn with the yarn cutter 43 arranged at the intake of the yarn supply Y to cut the yarn.
In addition to preventing the yarn end from being entangled with 4 or the like, a yarn breakage indicator lamp (not shown) is turned on.

When the yarn feeler 54 detects a yarn break, the count value X of the doffing timer 18 and the reference value B
, The thread breakage package 10 is classified into a large ball that has passed the reference value B and a small ball that has not reached the reference value B.

In the case of a large ball, the cradle 11 is raised and the cam of the doffing mechanism 3 is stopped with the cradle 11 opened, so that the package 10 rolls out into the stocker 60. The worker who knows the occurrence of thread breakage by turning on the thread breakage indicator lamp removes thread waste entangled in the yarn path including the processing system, transfers the yarn, etc., and sucks the yarn end into the air sucker that constitutes the doffing device. After being held, the push button PB is inserted. When the push button PB is turned ON, the cradle 11 stopped at the position where the package 10 was discharged starts, and the empty paper tube is supplied to the cradle 11 and the yarn is hooked on the paper tube. Resumes. In conjunction with this restart, the doffing timer 18 is reset.

When the yarn breakage occurs without the count value X exceeding the reference value B, the cradle 11 is raised and the cam is stopped with the cradle 11 closed as a doffing operation of small balls. This small ball package is held in the cradle while being floated from the winding roller 12. In this state, the operator is being prompted to remove the package. The worker who comes to the processing of the thread break while watching the thread break indicator lamp reaches out from the maintenance passage 58 side, holds this package from below, and holds it.
Press push button PB. When the worker presses the push button PB, the cam rotates a little, and the cradle 11 opens, so that the worker takes out the package as if to get it.
After the thread transfer operation, the operator presses the push button PB as described above.
When is pressed again, the doffing system performs a threading operation on the paper tube.

In this way, the full package whose counter value has reached the full value A and the large yarn breakage package which has passed the reference value B during winding are paid out to the stocker. Thread breakage packages that have not passed the reference value B are held as small balls. A display device such as a small ball display lamp may be provided on the full ball collection passage 59 side in accordance with the instruction of the classification means. However, if distinguished by the operation state of the cradle 11, the worker does not need to turn to the full ball collection passage 59.

When the reference value B is set to 0,
Since the counter value always exceeds the reference value B, all the thread breakage packages are paid out to the stocker. When the reference value B ≧ the full ball value A is set,
Since the counter value does not exceed the reference value B, only full balls are paid out to the stocker, and all the yarn breakage packages are held.

Since the reference value B is variable as described above, not only the size of the package to be removed by the operator can be changed arbitrarily, but also all the yarns can be changed by a special setting such as the reference value B = 0, A. The handling of sliced packages can be unified.

Next, the relationship between the rotation angle of the cam and the operation of each part will be described.

As shown in FIG. 2, the cam has an angle θ0 =
When the angle becomes θ1 from 0 °, the cradle starts to rise,
At the angle θ2, it rises sufficiently. At this time, the cradle is not open, and in the case of a small ball, the cam stops here. When the push button PB is pressed, the cam rotates a little, and the angle θ3
By then the cradle opens and the cam stops again. In the case of a thread break and a large ball, the cam stops here for the first time. When the push button PB is pressed, the paper tube supply is started, and the angle θ
By 4 the cradle is closed, and by a further angle θ5 the cradle has finished descending. The entire operation is completed when the angle θ6 is 360 °. When the ball is full, the entire operation is completed without stopping halfway from the angle θ0 to the angle θ6.

As described above, since the operation procedure of each part of the doffing mechanism is associated with the rotation angle of the cam in the single weight independent autodoffer, if the stop angle of the cam is determined by discriminating large and small balls, Each package can be handled differently.

[0028]

The present invention exhibits the following excellent effects.

(1) Since the packages are distinguished according to their sizes, it is possible to remove packages having an inconvenient size or to use them for rating packages. Moreover, the judgment is objective and the quality is constant.

(2) If small balls are held,
It is easy to remove small balls, especially in a machine that dispenses the fried package to the stocker on the back of the weight. Good continuity and improved work efficiency.

(3) Since the standard for distinguishing a package from a large ball to a small ball can be set between the size of a full ball and the size of an empty paper tube, not only can the standard be changed arbitrarily, but also all standards can be changed. The handling of the thread breakage package can be unified.

[Brief description of the drawings]

FIG. 1 is a front view of a false twisting machine showing one embodiment of the present invention.

FIG. 2 is a timing chart based on a cam rotation angle of a doffing mechanism.

FIG. 3 is a flowchart showing a processing procedure in a continuous operation mode.

FIG. 4 is an overall configuration diagram of a false twisting machine.

[Explanation of symbols]

 10 Package 11 Cradle 12 Take-up roller 18 Doffing timer PB Push button

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D01H 9/18 B65H 67/04 D01H 9/04

Claims (4)

(57) [Claims] In a doffing system of a false twisting machine which performs a doffing operation when a package is fully wound or when a yarn breaks during winding, a detecting means for detecting a size of the package is provided. A ball of a false twisting machine, characterized by having a separating means for distinguishing packages by comparing the detected size with a reference value and performing different doffing operations so that the state of the package is different by the distinction. Lifting system. 2. The package is divided into two types, large ball and small ball.
2. The doffing system for a false twisting machine according to claim 1, wherein one of the separated packages is paid out, and the other package is held floating from the winding roller. 3. A package for distinguishing a package into a large ball and a small ball .
3. A doffing system for a false twisting machine according to claim 2 , wherein the reference value for setting can be changed. 4. The size of the package detected by the detecting means.
4. A doffing system for a false twisting machine according to claim 1, wherein a doffing operation is performed when the size reaches a full value .