JPS6233815A - Multi-spindle spinning process for thermoplastic synthetic polymer and apparatus therefor - Google Patents

Abstract

PURPOSE:To equalize the length of plural yarn paths, by using a plurality of packages arranged along the direction of axial line of each winding shaft, extruding plural yarns from spinning nozzles corresponding to said packages and transporting the yarn toward said packages in the same plane. CONSTITUTION:The winder 8 has a horizontal shaft extending perpendicularly to the length of the spinning machine. A plurality of packages 7 arranged along the axial direction are operated by this winder. The spinning nozzles 2a, 2b, 2c...(the number of the nozzles is equal to that of the packages) are placed at the lower surface of the spinning head 1 in a plane including the shaft of the winding drum of the winder 8 and extended essentially vertically upward. The length of the yarn path is uniformized between plural yarns in the case of a multi-spindle spinning.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method and apparatus for melt spinning thermoplastic synthetic polymers such as polyester.

<Prior art> In a spinning machine that industrially performs high-speed spinning of 6000 m/ml or more, a plurality of spinnerets 2'a + 2' are installed in parallel to the longitudinal direction b *2'c
, 2'd are arranged. On the other hand/4'yK・
In order to facilitate doffing when the sifter is full, in current spinning machines, the axis of the winding mechanism of the cage 7 is arranged vertically and horizontally to the longitudinal direction of the machine base, and one winding shaft is used. multiple spindles 2'a + 2'b + 2'e * z
Yarns 6'a, 6b, 6' spun from 'd'
A method is adopted in which windings e and 6'd are wound simultaneously.

Therefore, as shown in FIG. 7, from the spinneret 2 to the heating cylinder 3'
The yarns 6a, 6b, 6'c, and 6'd run in a vertical plane parallel to the longitudinal direction of the machine stand from the cold air pressure chamber 24 to the cold air outlet 4'. While passing through the id and reaching the oiling nozzle 5, it transitions into a vertical plane perpendicular to the longitudinal direction of the machine.

Therefore, the yarn 6 between the spinneret 2 and the yarn cage 7
The yarn path length is spinneret 2'a+ 2'b r 2'e J
It differs for each yarn 6 spun from 2'd, that is, for each end.

In ultra-high speed spinning where the winding speed is 6000 m/min or more, the air resistance of the yarn becomes extremely large.

As a result, if the yarn path length differs from end to end as in the conventionally known spinning apparatus shown in FIG. 6, the yarn tension will change from end to end. If the thread tension differs significantly from end to end,
A problem arises in that the shapes of the 97 cages are different and the physical properties of the obtained yarns are also different.

Various attempts have been proposed to solve the above problems. For example, it has been proposed to install guides and rolls between the spinneret and the cage and adjust the yarn tension at each end to make it the same. However, the winding speed is 6.000 ml m
If a roll is used when the number of threads is greater than l, the turbulence of the wind on the roll surface will have a large effect, causing the yarn to dance on the roll, and the single yarn in the yarn to easily wind around the roll, making it impossible to achieve stable spinning. I can't.

On the other hand, in order to perform stable spinning, it is necessary to occasionally clean the spinneret 2. In a conventionally known spinning device, as shown in FIG. 7, a rail 25 extends perpendicularly to the longitudinal direction of the machine.
By sliding the heating cylinder 3 toward the front of the machine stand, a space was created directly below the spinneret 2 for cleaning. However, in this method, the heated cylinder 3 is placed in front of the worker who stands in front of the machine, so it is difficult to clean thoroughly by inserting hands or tools into the narrow gap. There was a problem. The heating tube 3' can also be attached or removed using a lifter, but this poses a problem in that it takes a lot of time and effort.

<Problems to be Solved by the Invention> The first object of the present invention is to solve the above-mentioned drawbacks of the conventionally known multi-spindle spinning method, and to provide a multi-spindle spinning method that can obtain uniform amounts and cages of uniform quality for each spindle. The purpose is to provide a spindle spinning method.

A second object of the present invention is to provide a multi-spindle spinning device that can carry out the above-described spinning method and also allows easy cleaning of the spindle surface.

<Means for Solving the Problems> A first object of the present invention is to arrange a plurality of package winding shafts whose axes are substantially horizontal in a direction perpendicular to the longitudinal direction of the machine base, 9. Multiple pieces on the package winding shaft. A multi-spindle spinning method in which a thermoplastic synthetic polymer is wound from a spinneret through an annealing zone and a cleaning zone to a mother cage using a spinning device in which cages are arranged in the axial direction of a winding shaft, and each This is achieved by a multi-spindle spinning method characterized in that a plurality of threads are run in substantially the same plane from their respective spindles toward a plurality of slots and packages of a winding shaft.

By running a plurality of yarns in the same plane in this way, the length of the yarn path between the plurality of yarns becomes the same, and the yarn tension between the ends can be kept substantially the same.

In this case, it is preferable that the plurality of threads run in the same plane in the vertical direction, since the absolute value of the air resistance applied to each thread can be reduced.

The second object of the present invention is to provide a winding mechanism which has an axis extending perpendicularly and horizontally to the longitudinal direction of the machine base, and which winds a plurality of matrices arranged in the axial direction, and which corresponds to each package. A thermoplastic synthetic polymer, in which a plurality of spinning units each including a number of spinnerets, a heating tube and a cold air tube disposed between the spinneret and the winding mechanism are provided in the longitudinal direction of the machine base. A combined multi-spindle spinning device, wherein a plurality of spindles in each spinning unit are arranged in a plane extending substantially vertically upward including the axis of the winding mechanism, and the heating tube and the cooling tube are arranged in a plane extending substantially vertically upwardly. This is achieved by a multi-spindle spinning device characterized in that it is configured to be movable in and out of the plane.

By configuring the multi-spindle spinning device in this way, the yarn tension between the ends can be kept substantially the same, and
Cleaning of the spinneret can be carried out very easily.

The heating cylinder and the cooling cylinder may be moved individually. However, it is more preferable to form the heating tube and the cooling tube as an integral structure and move them simultaneously.

The movement of the heating tube and the cooling tube may be a combination of horizontal movement and vertical movement, or may be configured to be swingable about a fulcrum provided outside the plane.

<Example> The present invention will be described in detail below with reference to the accompanying drawings showing an example of the present invention.

As shown in FIG. 1, in the multi-spindle spinning device according to the present invention, a plurality of spinning yarns 22) A, B, . . . are arranged in the longitudinal direction of the spindle. The number of spinning units A, B, . . . is arbitrarily determined, and usually 4 units, 8 units, or 12 units are used. A winder 8 having an axis extending horizontally and perpendicular to the longitudinal direction of the spinning machine is provided below one spinning unit, and in the illustrated example, four winders 7 are arranged in the axial direction and wound. ing. A number of spinnerets za T 2b + 2e + 2d corresponding to the packages 7 are arranged in a plane that includes the axis of the winder 8, more specifically the axis of the winding drum of the winder 8, and extends substantially vertically upwards. It is provided on the lower surface of the spin head 1 within the spin head. Each spindle 2m
, 2b, 2c, and 2d are spun from the heating tube 3, the cold air tube 4, the oiling nozzle 5. The pack shift is reached via the yarn guide 18. The yarn 6 may be passed through an interlacer 25 arranged between two oiling nozzles 5 (see FIG. 6). Oiling nozzle 5 and interlacer 25 are mounted on frame 1
5.

The heating cylinder 3 and the cold air cylinder 4 are integrally constructed, and are suspended from a running rail 11 provided on the side surface of the spin head 1 by a heating/cold air cylinder attaching/detaching device 10. Cold air is supplied to the cold air cylinder 4 from a cold air duct 16 extending in the longitudinal direction of the machine base on the lower surface of the pedestal 15 via a cold air precipitle duct 17. As shown in FIG. 6, the cold air inside the cold air cylinder 4 is
It is supplied to the thread 4 traveling through the perforated plate 41. Various structures can be used for this cold air cylinder 4, but for example, the air passage resistance of the cold air blowing surface of the cylindrical cooling cylinder is substantially uniform in the circumferential direction and gradually decreases in the yarn running direction. It is preferable to use an accompanying flow compensating cooling cylinder which is configured to provide cooling air in an amount commensurate with the traveling yarn accompanying flow. "Cooling cylinder for melt spinning fibers"
)
This cooling cylinder is, for example, the sixth
As shown in the figure, it has a perforated plate 41 with holes 42 arranged at intervals narrowing downward, and cold air 44 blown downward from the holes 42 through a straightening tube 43 cools the yarn 6.

In Figure 1, the heating cylinder 3 and cooling cylinder 4 are spindle 2m + 2b + 2c.
, 2d, and the spinning unit A is shown in operation.Next, the heating cylinder 3 and the cooling cylinder 4 include the axis of the winder 4 and the spinnerets 2m, 2b, 2c, 2d. The state in which the spinning unit is removed from the plane will be explained. Figure 2 is a front view of the multi-spindle spinning device. It's a plane υ
Indicates that it is removed. The heating/cooling cylinder attaching/detaching device 10 for suspending the heating cylinder 3 and the cooling cylinder 4 has a pair of running wheels 1 that engage with a running rail 11, as shown in FIGS. 1 and 2.
4, a U-shaped main frame 13 supporting running wheels 14 at the end, a cylinder 12 housed in the main frame 13, and a cylinder 12 to the main frame 13.
a piston 12a extending downward through the piston 12;
The support arm 23 is attached to the lower end of the heating cylinder 3, extends horizontally, and is fixed to the side of the heating cylinder 3. In Figure 2 (
In order to bring the heating cylinder 3 and cooling cylinder 4 into the state shown in B) in which they can be removed from the plane, air is first supplied to the cylinder 12' through a conduit (not shown) to push the spindle 12a' downward. Then, the heating/cold air attaching/detaching device 10 is moved to the right side in FIG. 2 together with the heating cylinder 3 and the cooling cylinder 4, thereby pushing down the heating cylinder 3 and the cooling cylinder. Alternatively, the movement and depression may be performed simultaneously. In this way, a space S is provided below the spindle 2 in which the spindle 2 can be cleaned. After the spinneret 2 has been cleaned, the heating cylinder 3 and the cooling cylinder 4 can be returned to the plane by reversing the above-described procedure.

3 and 4 are side views of the spinning unit in the state shown in FIG. 2 (A) and the spinning unit in the state shown in FIG. 2 (B), respectively. As can be seen from FIG. 4, a cleaning space S is provided between the spinneret 2 and the upper surface of the heating cylinder 3. Cleaning is carried out by inserting cleaning tools or hands from both sides of the machine table, i.e. from both sides of the spinning head in FIG. In the illustrated example in which four spindles are provided for one spinning unit, the four spindles can be completely cleaned by cleaning from both sides of the spinning head.

FIG. 5 shows another embodiment of the heating/cold air attachment/detachment device 10.

Heating/cold air attachment/detachment device in the embodiment shown in FIG. 5], Oa
The arm 2 has one end attached to a pillar 19 provided on the pedestal 15 and a rotary actuator 20 provided above the pillar 19, and the other end pivoted to the heating cylinder 3 with a pin 22.
Consists of 1. 5 shows a state in which the heating cylinder 3 is placed below the spinneret 2. From this state, by rotating the arm 21 clockwise, the heating cylinder 3 and cooling cylinder 3 shown in FIG. can be arranged below the rotary actuator 20.

Comparison of performance between the method of the present invention and the conventional method
Three types of polyester multifilaments were spun under the same conditions using the method using the apparatus shown in FIG. 7, and the winding tensions were compared. The comparison results are shown in Table 1.

From Table 1 below, it is clear that by spinning according to the method of the present invention, the spinning tension can be made almost constant under all conditions regardless of the position of the spinneret. On the other hand, in the conventional method, there is a large difference in spinning tension from spinner to spinneret, and under the conditions indicated by the cross, the amount of oil scattered at the yarn id is large, resulting in frequent yarn breakage and a stable winding system. It was impossible.

<Effects of the Invention> By using the spinning method of the present invention, the spinning tension at each end can be made substantially uniform even when multiple spindles are spun, and the spinning tension itself can be made smaller than that of conventional methods. can do. As a result, it is possible to obtain a yarn with less fuzz and good yarn physical properties, and a high-quality package formed by winding the yarn, which does not produce pulp.

Furthermore, by using the spinning apparatus according to the present invention, high-quality yarn and mother package can be obtained, and even in a multi-spindle spinning apparatus, the bottom surface of the spinneret can be completely and easily cleaned.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an embodiment of a multi-spindle spinning device according to the present invention, and FIG. 2 is a front view of the multi-spindle spinning device shown in FIG. 1, in which (A) is a winding state; (B) shows the positions of the heating tube and cooling tube in the cleaning state, FIG. 3 is a side view showing the spinning unit in a state corresponding to the state shown in FIG. 2, and FIG. FIG. 5 is a side view showing the spinning unit in a state corresponding to (B) of FIG. 5, and FIG. 5 is a front view of the multi-spindle spinning device similar to FIG. , FIG. 6 is a front view schematically showing a multi-spindle spinning device according to the present invention using an accompanying flow compensation type cooling cylinder, and FIG. 7 is a perspective view showing a conventionally known multi-spindle spinning device. 2.2a, 2b, 2c, 2d = spinneret, 3... heating tube, 4... cold blast tube, 6... yarn, 7... 9 cage, 8... winding machine , 10... Heating/cold air cylinder attachment/detachment device, 11... Traveling rail, 12... Cylinder, 12
m... Piston, 14... Traveling wheel, 15...
Work platform, 20...Rotary actuator, 21...
・Arm, 22...bin. Figure 2 Procedural amendment (voluntary) October 7, 5, 1985 Michibe Uga, Commissioner of the Patent Office1, Indication of the case 1985 Patent Application No. 1685252, Name of the invention Thermoplastic synthetic polymer Relationship between the multi-spindle spinning method and its device 3 and the case of the person making the amendment Patent applicant name (003) Asahi Kasei Kogyo Co., Ltd. 4 Agent address 5-8-10 Toranomon-chome, Minato-ku, Tokyo 105
Column 6 of "Detailed Description of the Invention" of the specification to be amended, contents of the amendment 1) "Deki" written in the second line of page 5 of the specification is amended to "r deki". 2) "Cold wind fresh" described in page 9, line 8 of the specification is "
Correct to "Cold Air Flexi".

Claims (1)

[Claims] 1. A plurality of package winding shafts whose axes are substantially horizontal are disposed vertically in the longitudinal direction of the machine, and a plurality of packages are wound on each of the package winding shafts. A multi-spindle spinning method in which a thermoplastic synthetic polymer is wound from a spinneret through an annealing zone and a cooling zone into a package using spinning devices that are arranged in the axial direction of the winding shafts. A multi-spindle spinning method characterized in that a plurality of threads are run in substantially the same plane from respective corresponding spindles toward a plurality of packages. 2. A winding mechanism that has an axis extending perpendicularly and horizontally to the longitudinal direction of the machine and winds a plurality of packages in the axial direction, a number of spinning ports corresponding to the respective packages, and the spinning port. A multi-spindle spinning device for thermoplastic synthetic polymer, in which a plurality of spinning units each including a heating cylinder and a cold air cylinder arranged between the winding mechanism and the winding mechanism are provided in the longitudinal direction of the machine stand, each spinning unit comprising: A plurality of spinnerets in the spinning unit are arranged in a plane that includes the axis of the winding mechanism and extends substantially vertically upward, and the heating tube and the cooling tube are configured to be movable in and out of the plane. A multi-spindle spinning device characterized by: