JPH0146425B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a yarn winding device that forms a taper at the end of a yarn package, and more specifically, the present invention relates to a yarn winding device that forms a taper at the end of a yarn package. The present invention relates to an improved yarn winding device with a tapered hilter which has uniform yarn package forms and excellent operability.

Many bulky yarns, such as false twisted yarns, have a large residual shrinkage force after being wound around a bobbin, so that the ends of the yarn package tend to bulge out, which also has a negative effect on yarn unwinding in subsequent processes. Therefore, a method is usually adopted in which a thread package is wound with a suitably tapered end formed therein.

The conventional taper builder used to form a tapered end on this thread package is
For example, JP-A-50-12352, JP-A-51-
This is a configuration seen in Publication No. 3818, Japanese Unexamined Patent Publication No. 124344/1980, and the like. What these conventional taper builders have in common is a cradle arm that holds the yarn package at the tip, is rotatably supported at the rear end, and swings as the winding diameter of the yarn package increases after the start of winding. This is because it is used as a drive source for a taper builder.

That is, since the cradle arm and the taper builder are mechanically connected in a one-to-one relationship,
The formation of the end face of the thread package depends on the cradle arm, which swings for each weight, as the winding diameter of the thread package grows.

Therefore, even if each of the multiple spindles starts winding at any time, the thread package after winding ends will have the same form for each spindle, so it is no longer necessary to manually thread the yarn one by one and start winding one after another. This method was usually adopted in conventional operating systems where

However, the conventional taper builder system in which the drive source is a cradle arm that swings depending on the growth of the winding diameter of the yarn package has the following drawbacks.

(1) The connection between the cradle arm and the taper builder itself has a negative effect on the contact pressure between the contact pressure roller and the yarn package cage, and conversely, the vibration of the yarn package acts on the taper builder through the swinging of the cradle arm, causing the yarn to deteriorate. This disturbs the winding width of the package and has a negative effect on the form.

(2) Taper pattern setting is from 3 to 5 for each weight.
Since this is done by selecting the mounting positions of individual members, it is extremely difficult to make all the weights uniform and to change conditions.

(3) The taper pattern is created by a combination of arcuate motions, and cannot be arbitrarily selected steplessly.

(4) There are many parts and the cost is high.

(5) The connecting bar connecting the cradle arm and taper builder is an obstacle to compact device design.

In addition, in recent years, as a measure to improve productivity, reduce the amount of waste yarn produced, and reduce labor costs, a system has been introduced in which all threads are loaded onto the winding bobbin at the same time by mechanical force, making it easier to start winding and complete the process. With the adoption of a new operating system that allows all spindles to complete the winding at the same time, the drawbacks of the conventional taper builder system have become even more difficult to ignore. There is.

The present invention provides an improved yarn winding device with a taper builder that is fundamentally different from the conventional yarn winding device with a taper builder that uses a cradle arm as a drive source, and completely solves all of the above-mentioned drawbacks. In particular, when used in an operation system called simultaneous start of winding, which has been developed in recent years, it exhibits extremely remarkable effects. That is, the improved yarn winding device with a taper builder of the present invention has the following features: (a) a spindle that supports a bobbin for winding yarn;
In a yarn winding device in which a plurality of spindles are arranged in the axial direction of the spindle, (b) a scroll cam roller provided opposite to the plurality of spindles; (c) a scroll cam roller movable in a cam groove of the scroll cam roller; (d) a thread guide holder supported by the thread guide holder, having a thread guide section at one end and an engaging section at the other end; a supported taper builder arm; (e) a mover engaged with the taper builder arm in a relationship that imparts a rocking motion to the taper builder arm; (f) a support member that supports the mover; (g) a thread. a drive source that moves the support member in order to maintain a desired relationship between the traverse width of the yarn guide and the winding diameter from the beginning of winding to the end of winding; (h) a controller that controls the drive source; (li) the controller; a detecting means for supplying electrical winding diameter information to the movable member; In addition, the scroll cam roller, the thread guide holder, the tapered builder arm, and the mover are provided in correspondence with the plurality of spindles.

In other words, the taper builder system of the present invention having the above configuration does not use the cradle arm, which swings depending on the growth of the winding diameter of the yarn package, as the driving source for the taper builder, as in the conventional case, but instead uses the cradle arm, which is engaged with the taper builder arm, as the driving source for the taper builder. The desired traverse width of the thread guide supported by the tapered builder arm via the thread guide holder is achieved by moving the mover based on a preset movement relationship via the support member of the mover. It can be set so that the relationship is as follows.

Next, the present invention will be explained in detail based on an embodiment shown in the drawings, but first, FIG. This will be explained using a schematic configuration diagram.

In FIG. 1, a yarn 1 (for example, a yarn unwound from a raw yarn package and heated, drawn, false-twisted, and treated with oil to a desired degree as necessary)
is the yarn transfer means 2 (for example, an apron roller)
A common traverse element drive shaft 6 passes through the traverse fulcrum guide 3 and is driven by an electric motor 9'.
While being traversed by the yarn traversing element 4 that engages with the yarn, the yarn is wound onto a winding bobbin mounted on a winding spindle 7.

As the yarn 1 is wound onto the bobbin, the radius of the yarn package 8 gradually increases, and if this continues, the yarn winding speed will gradually increase. In order to control the winding speed of the yarn to be substantially constant from the start of winding to the end of winding, the rotational speed of the winding spindle 7 is adjusted as the radius of the yarn package 8 increases. need to be reduced. As a means for this purpose, the apparatus shown in FIG.
Tension detection rotation speed control means is provided. This means applies periodic active vibrations to a yarn guide 11 provided upstream of the traversing fulcrum guide 3, a yarn tension detection end 12 provided between these guides 3 and 11, and the running yarn. The tension values detected by the yarn deflecting means 13 to give, the means 31 for generating a representative tension signal, and the yarn tension detection end 12 are set as a set tension value selected so that the winding speed of the yarn onto the bobbin is constant. Tension determination element 14 to be compared, tension determination element 1
The motor is comprised of a speed controller that controls the rotation speed of the electric motor 9 and increases or decreases the rotation speed of the bobbin rotation drive shaft according to the determination result in step 4, and a speed change means 15 that controls the rotation speed of the electric motor 9.

Details of this tension detection rotation speed control means can be found in JP-A-Sho.
54-93137, JP 54-93142, JP 54-112235, British Published Patent Publication No.
No. 2015589 and GB 2029023.

Yarn tension detection ends 1 are attached to several of the many winding spindles. For example, if 200 winders are lined up, yarn tension detection ends are attached to 10 winders.

The output signal from each yarn tension detection end 12 is sent to means 31 for generating a representative tension signal.

As one implementation means, there is a means for averaging the signals from the respective thread tension detection ends 12.

The averaged representative tension signal is sent to the tension determination element 14. Another method is to select one of the output signals from the plurality of yarn tension detection ends 12 and send it to the tension determination element 14. A deviation output between the representative tension signal from the tension determination element 14 and a predetermined control setting signal is sent to a speed change means 15 that controls the rotation speed of the electric motor 9. The output from the speed change means 15 is sent to the electric motor 9, and the speed of the electric motor is changed.

The winding spindles 7 of a plurality of winders are connected to a thread package common drive shaft 3 via a timing belt 32.
3 at the same time. The yarn package common drive shaft 33 is driven by an electric motor 9.

Next, a means for maintaining a constant wind ratio will be explained. A pulse generator 21 is attached to the thread package common drive shaft 33 and generates Z _SP pulses in one rotation. This pulse generator 2
A pulse pickup 22 is provided opposite to the pulse generator 1 and picks up the pulses generated from the pulse generator 21. On the other hand, a pulse generator 23 is also attached to the traverse element drive shaft 6, and generates Z _TR pulses in one rotation. A pulse pickup 24 is provided opposite the pulse generator 23.
Pick up the pulse generated from the Pulse pickup 22 and pulse pickup 24
The pulse signal picked up by Correspondingly, a control signal is issued from the wind ratio control element 34 so that the wind ratio becomes a constant value, and the rotation of the electric motor 9' which rotationally drives the traverse element drive shaft 6 is controlled via the transmission element 25. Control numbers.

2 and 3 are detailed views of the winding section of the yarn winding device illustrated in FIG. 1, showing a plan view and a side view, respectively. Yarn 1 is a traverse element drive shaft 6
A thread package 8 is formed through the traversing element 4 which is driven by the thread. 5 is yarn package cage 8
This is a roller bail that fixes the yarn path constant while applying a predetermined surface pressure in contact with the cradle arm, and participates in the swinging of the cradle arm as the winding diameter increases.

The yarn package 8 includes a timing pulley 41,
42 and is held on a winding spindle 7 driven by timing belts 43 and 44.

The timing pulley 42 is attached to the thread package common drive shaft 33 and is connected to the other timing pulleys 41.
The cradle arm 45 is attached to a swing fulcrum shaft. The conventional taper builder in a spindle drive type yarn winding machine configured as described above is driven via a bar (not shown) that engages with a cradle arm that swings as the winding diameter increases. There is.

The yarn winding machine shown in FIG. 1 is effectively used when multiple spindles such as a draw winder and a rewinding machine are operated simultaneously. A specific embodiment will be described in which the present invention is installed in the spindle dry type yarn winding machine shown in the figure.

That is, FIG. 4 is a schematic diagram of a specific embodiment in which the taper builder according to the present invention is incorporated into the yarn winding device shown in FIG. 1. This is a part of a yarn winding device in which a plurality of spindles are continuously arranged, and shows a mechanism and control system including a simultaneous taper builder drive source provided corresponding to each spindle.

In FIG. 4, a scroll cam roller 51 is provided opposite the yarn package 8, and a spiral cam groove 52 of the scroll cam roller has a yarn guide portion 53 at one end and an engaging portion 54 at the other end. A guide holder 55 is supported in a freely movable manner by the cam groove. The tapered builder arm 56 adjacent to the scroll cam roller 51 has a fulcrum 57 approximately in the center.
, and one end of this fulcrum is a compression spring 5.
8, and a cam curved surface 59 provided at the other end is moved by a supporting member 6 that moves while pressing the cam curved surface to impart a swinging motion to the tapered bill arm.
The mover 61 supported by 2 is engaged. Further, this taper builder arm 56 is provided with a guide groove 63 in which the engaging portion 54 of the thread guide holder 55 engages and slides therein. A drive source 64 is used as a drive source as a means for imparting reciprocating motion in the longitudinal direction of the array of winding devices to the mover and the support member 62 that supports the mover 61. controlled. The rotational movement of this electric motor 64 is controlled by a feed screw 65 (a ball screw is preferable in terms of efficiency and accuracy).
The support member 62 is converted into the reciprocating motion by
The signal is transmitted to the mover 61 via. That is, the mover 61 reciprocates on the cam curved surface area of the taper builder arm so as to produce a desired taper pattern, thereby imparting a desired swing to the taper builder arm. Therefore, from the start to the end of winding the thread, this new mechanism controls the traverse width of the thread guide that engages with the swinging taper builder arm, making it possible to obtain a desired taper pattern. Next, a description will be given of how the rotational movement of the electric motor 64, which serves as the drive source of the taper builder, is controlled. In FIG. 1 already explained, the thread package common drive shaft 3
The pulse signal related to the rotational speed of the yarn package detected by the pulse generator 21 attached to the winding ratio control element 34 and picked up by the pulse pickup 22, i.e., the same electric power inputted to the wind ratio control element 34 in FIG. The target signal is also input to the controller 66 by branching from the circuit to the wind ratio control element 34. Based on this yarn package rotation speed information, the controller 66 indicates the gradual decrease rate of the yarn package rotation speed from the beginning to the end of winding, and at the same time calculates N/N ₀ , which is the reciprocal of the value indicating the increase in the winding diameter. By calculating the value, the winding diameter information of the yarn package is always obtained. Here, N ₀ is the initial rotation speed of the yarn package at the beginning of winding, which is stored in advance inside the controller, and N
is the number of revolutions of the yarn package after winding for a given time.

On the other hand, the controller 66 controls the pulse motor driver 6 based on the winding diameter information of the yarn package.
It has a function that allows you to set any desired taper pattern by issuing a command to 7.

Here, since any taper pattern is created from the correlation between the winding diameter and the winding width, setting the taper pattern is, in other words, nothing but setting the required winding width corresponding to each winding diameter. In addition to the taper pattern setting function, the controller 66 also has an end face breaking pattern setting function, and can form a tapered end while performing end face breaking.

FIG. 5 shows a locus at the stroke end of a traverse guide for forming a tapered end according to the configuration of FIG. 4 according to the present invention.

FIG. 5A shows a pattern when the end face is not broken. If viewed minutely, the taper formation is a step-like locus.

That is, the controller 66 narrows the folding position of the traverse guide by (b ₁ ) when the change in the winding diameter of the yarn package 8 reaches a preset value (a) (the value can be adjusted arbitrarily). Further, when the change in the winding diameter reaches (a ₁ ), the turning position of the traverse guide is narrowed by (b ₂ ). below,
Each time the winding diameter changes from (a ₂ ) to (a _o ), the turning position of the traverse guide is narrowed to (b ₂ )...(b _o ). Here, (b ₁ ) ~ corresponding to each winding diameter
Any desired taper angle can be obtained by setting the value of (b _o ) in a desired pattern.

FIG. 5B shows a pattern in which a tapered end is formed while breaking the end face. ( _C0 ),
(C ₁ ), (D), and (E) are values set in advance in the controller.

When the end face breaking operation starts, the amplitude of the traverse guide narrows at the set speed (C ₀ ),
It then widens (C ₁ ). At this time, the value ΔC of (C ₀ )−(C ₁ ) is the decrease in the winding width commensurate with the increase in the winding diameter during the end face breaking operation.

(D) shows the area where edge breaking is in operation, and (E) shows the area where edge breaking is stopped. Note that the operation of the taper builder in region (E) is the same as in FIG. 5A.
Set values (C ₀ ) to (E) are set to appropriate values depending on the yarn type and winding conditions.

The above is the fourth step in driving the taper builder and end face breaking.
Although the explanation has been made on the case where the operation is performed by electrical control as shown in the figure, the present invention is not necessarily limited to this, and it is also possible to perform the operation by mechanical operation as shown in FIG. 6, for example. That is, FIG. 6 is a schematic diagram of a taper builder and a drive section for performing end face breaking by mechanical operation. When the builder cam 68 that determines the taper pattern is driven by the geared motor 69 for driving the taper builder, and the reciprocating motion of the cylinder 70 for driving the end face breaking is added, the taper builder and end face breaking operations are commonly transmitted to each traverse device. The pattern and end face breaking motion are transmitted to each of the combined traverse devices by the builder cam 68 to the support member 62 for this purpose.

As mentioned above, the present invention does not use the cradle arm, which swings depending on the growth of the winding diameter of the thread package, as the drive source of the taper builder, but instead uses the mover engaged with the taper builder arm as a common drive source for all spindles. An electric motor is provided to move the movable element based on a preset motion relationship via a support member, and this is used as a driving source, so that the following effects are achieved.

(1) When setting or changing the conditions of the taper pattern or end face collapse pattern, it can be handled by changing the settings of the controller common to all the spindles or by changing the pattern of the drive source common to all the spindles, which eliminates the conventional method that required adjustment of each spindle. Compared to the above, the work is significantly reduced, and the yarn package form of all spindles can be made uniform.

(2) The controller common to all spindles or the taper pattern allows conditions to be set freely, and has a wider degree of freedom than the conventional method, which only allows patterns based on combinations of circular motions.

(3) The configuration is simplified and the number of parts is reduced, which reduces costs and enables smart equipment design.

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an example of a yarn winding device to which a taper builder according to the present invention can be effectively attached. 2 and 3 are detailed views of the winding section of the yarn winding device illustrated in FIG. 1, and are a plan view and a side view, respectively. FIG. 4 is a schematic configuration diagram of a specific embodiment in which the taper builder according to the present invention is incorporated into the yarn winding device shown in FIG. 1. FIG. 5 is a diagram showing a locus at the stroke end of a traverse guide for forming a tapered end according to the configuration of FIG. 4 according to the present invention. FIG. 6 is a schematic diagram of a taper builder and a drive section for mechanically breaking the end face. [Explanation of symbols], 7: Take-up spindle, 11:
Thread guide, 21, 23: Pulse generator, 2
2, 24: Pulse pickup, 25: Speed change element, 51: Scroll cam roller, 52: Cam groove, 55: Thread guide holder, 56: Taper builder arm, 59: Cam curved surface, 61: Mover, 6
2: Support member, 63: Guide groove, 64: Electric motor,
65: Feed screw, 66: Controller, 67: Pulse motor driver, 68: Builder cam, 6
9: Geared motor, 70: Cylinder.

Claims (1)

[Scope of Claims] 1 (a) A yarn winding device in which a plurality of spindles supporting a bobbin for winding yarn are disposed in the axial direction of the spindle, (b) a yarn winding device that supports a bobbin for winding yarn; (c) a thread guide holder movably supported in the cam groove of the scroll cam roller and having a thread guide portion at one end and an engaging portion at the other end; (d) the thread guide a taper builder arm that is swingably supported and has a guide groove that movably supports the engaging portion of the holder; (i) a support member for supporting the slider; (g) a support member for maintaining the traverse width and winding diameter of the yarn guide in a desired relationship from the beginning of winding to the end of winding the yarn; A drive source for causing movement, (H) a controller for controlling the drive source, (L) a detection means for supplying electrical winding diameter information to the controller, and (J) a support member for supporting the moving element. , extending parallel to the spindle axis and across the spindles of the plurality of spindles, and the scroll cam roller, thread guide holder, tapered builder arm, and slider are arranged to correspond to the spindles of the plurality of spindles. A yarn winding device with a taper builder.