JP2009228174A - Melt-spinning apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a melt-spinning apparatus increased in productivity, requiring neither removal nor installation of a heating and thermally insulating cylinder in works such as spinning cap change and cap surface cleaning and improved in workability of these stationary works. <P>SOLUTION: The melt-spinning apparatus comprises a heating device set under a spinning pack and heating and keeping warm the threads, a cooling device set under the heating device and cooling the threads, an elevating means moving the heating device and the cooling device vertically and a transferring means moving the heating device in the retreating direction. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a melt spinning apparatus, and more specifically, it is not necessary to remove and install a heating and insulating cylinder during work such as spinning pack replacement and cleaning of a base surface, and production with improved workability of these steady operations. The present invention relates to a melt spinning apparatus having improved properties.

  Conventionally, in a synthetic fiber manufacturing process, a spun yarn is wound after a cooling air is blown onto a yarn spun from a spinneret.

  On the other hand, in recent years, when spinning at a high speed or spinning polymers having different melt viscosities, the temperature of the die and the high temperature of the yarn forming region under the die have been controlled.

  Such a type of take-up device employs a method in which various heaters called heat insulation cylinders are attached in the vicinity of the spun yarn.

  In such a system, in order to increase the thermal efficiency from the heater, the heater in the yarn forming region is positioned as close as possible so as not to contact the yarn as the heater position, and as close as possible to the lower surface of the spinning pack.

  However, it is necessary to attach and remove the heat insulation cylinder when changing the spinning pack due to product changes, etc., or when periodically cleaning the base surface to remove dirt generated in the spinning holes during spinning. It will take time and labor.

  In order to solve such a problem, for example, the heating and insulation cylinder is divided into two parts, and movable means that can reciprocate in the horizontal direction are connected to the divisions. There has been proposed a melt spinning apparatus that can be connected up and down (Patent Document 1).

  In such a system, when the base surface is cleaned, it is lowered from directly under the base surface by the lifting device and is greatly lowered from the spinning pack, so that the workability of the base surface is improved.

  However, the heating and insulation cylinder having the above-described split structure may have a small lowering distance of the elevating device depending on the structure of the apparatus, and in that case, the heating and insulation cylinder is in a state where it is divided during the work such as cleaning the base surface. Of these, the heated and insulated cylinder divided on the work surface side may interfere with the work.

  Further, in a melt spinning apparatus in which a cooling device, a heating cylinder, and a take-up roller are provided in this order below the spinneret, the heating cylinder can be moved in the vertical direction and can be moved backward from the yarn running position. A melt spinning apparatus has been proposed (Patent Document 2).

  However, in such a system, the heating cylinder is lowered during the yarn hooking / breaking process and moved backward, so that it is greatly retracted from the yarn running position, and the workability of the yarn hooking / thread breaking process is improved. To do.

  However, the apparatus as described above is provided with a cooling device below the spinneret, and high temperature control cannot be performed in the yarn forming region directly below the spinneret, and a yarn having the required performance cannot be obtained. There is also.

In addition, the above-described apparatus has a fixed cooling device, and the cooling device may interfere with the operation during operations such as cleaning the base surface.
JP 61-244114 A JP-A-6-313205

  An object of the present invention is to solve the above-described problems of the prior art, and it is not necessary to remove and attach the heating and insulation cylinder during operations such as spinning pack replacement and base surface cleaning. It is an object of the present invention to provide a melt spinning apparatus with improved productivity and improved productivity.

In order to solve the above problems, the present invention employs the following configuration. That is,
A heating device that heats and keeps the yarn disposed below the spinning pack, a cooling device that cools the yarn, which is disposed below the heating device, and the heating device and the cooling device vertically. A melt spinning apparatus comprising: an elevating means for moving; and a conveying means for moving the heating device in a retracting direction.

  According to the melt spinning apparatus of the present invention, it is no longer necessary to remove and attach the heat insulation cylinder during operations such as spinning pack replacement and base surface cleaning, and the productivity of these steady operations is improved and the productivity is improved. A spinning device can be provided.

  Hereinafter, the present invention will be described with reference to the drawings. FIG. 1 is an apparatus schematic diagram showing an example of a melt spinning apparatus according to the present invention.

  As shown in FIG. 1, the present invention is a melt spinning apparatus in which a cooling device 1 is provided below a spinning pack 5 (FIG. 2) having a spinneret 6 (FIG. 2). A heating device 3 for heating the spun yarn by surrounding the spun yarn is provided. The upper end of the heating device 3 is connected to the lower surface of the spinning pack so as to be separated from the lower end, and the lower end thereof is connected to the upper end of the cooling device 1 so as to be separated.

  The heating device 3 controls the temperature of the discharged polymer and the temperature of the space below the spinneret 6 or the temperature of the discharged yarn. The cooling device 1 cools the yarn by blowing cooling air in a direction across the spun yarn.

  The heating device 3 has a rectangular heating block structure, and includes a heating and heat insulating cylinder that has a built-in heater and forms a hollow hole having a size close to the base 6 so as not to hit the discharge yarn.

  In such a device, the molten polymer discharged from the spinneret 6 is controlled in discharge temperature by the heating device 3, further heated in the region until reaching the cooling device 1, and then cooled by the cooling device 1 from the lateral direction. It is cooled by the above and taken up by a winder through a take-off roller (not shown).

  In this invention, it has the raising / lowering means 2 which moves the said heating apparatus 3 and the cooling device 1 to an up-down direction. The elevating means 2 is composed of a fluid pressure cylinder or the like, and the tip of the cylinder is connected to the cooling device 1.

  Furthermore, in the present invention, a heating device 3 having a conveying means 4 is provided on the cooling device 1. In the example shown in the figure, the conveying means 4 is attached to the guide rail 7 attached to the support column extending in the depth direction to the lowered position of the heating device 3 and the side surface side of the heating device 3 guided on the guide rail 7. It consists of a roller. In general, it is preferable to use a fluid pressure cylinder (pneumatic pressure, hydraulic pressure), a motor, or the like for driving the conveying means 4, but a manual mechanism may also be used.

  FIG. 2 is a side view of the apparatus in a state where the cooling device 1 and the heating device 3 are in the raised position, and FIG. 3 is a side view showing a state in which the heating device and the cooling device are moved downward.

  As described above, the base 6 is attached to the lowermost part of the spin pack 5, and the molten polymer from each spin hole is simultaneously discharged to form a plurality of yarns. Below the spinning pack 5 is provided a heating device 3 for controlling the temperature of the space below the base 6 and the temperature of the discharged yarn. At the time of work such as spinning pack replacement and cleaning of the base surface, the elevating means 2 lowers the heating device 3 together with the cooling device 1 to the descending end of the cooling device 1, and then the transport means 4 interferes with the work such as cleaning the base surface. It is transported to a retracted position without At this time, as shown in FIG. 3, the lowered position 3 </ b> A of the heating device 3 is not necessarily lowered to the descending end of the cooling device 1 </ b> A at the lowered position, but is guided by the horizontal guide rail 7 in the middle position and lowered by the conveying means 4. It can also be conveyed from the heating device 3A at the position to the retreat position 3B in the direction opposite to the front surface of the spinning device. When the work is completed, the heating device 3 is conveyed by the conveying means 4 from the heating device 3B at the retracted position to the lowered position 3A, and the heating device 3 is raised together with the cooling device by the elevating means 2 and is returned to the original position again. Each of these operations may be performed by a series of automatic operations, or may be performed semi-automatically or manually.

  Hereinafter, preferred embodiments of the present invention will be described more specifically based on examples.

  The polyester yarn of 8-10 denier discharged using the base is heated with a heating device of 415 mm × 225 mm × 100 mm set at 430 ° C., and cooled with wind of 20-25 m / s from the cooling device, It winds up at a speed of 1200 m / min with a winder through a take-up roller. In such a melt spinning apparatus, the heating device 3 was lowered together with the cooling device 1 by the elevating means 2 during the cleaning operation of the die surface, and the cooling device 1 was lowered to the lower end. At this time, the lowering position 3A of the heating device 3 is not lowered to the lower end of the cooling device 1A at the lowering position, but is guided by the horizontal guide rail 7 at the middle position, and is spun from the heating device 3A at the lowering position by the conveying means 4. It was conveyed to the retreat position 3B in the direction opposite to the front surface of the apparatus.

  The lowering distance of the cooling device is 550 mm, the lowering distance of the heating device is set to a position 80 mm from the base surface in consideration of the transport operability from the lowering position to the retracting position, and the heating device is moved from the descending position to the retracting position. The moving distance was 350 mm.

  When the work was completed, the heating device 3 was transported by the transport means 4 from the heating device 3B at the retracted position to the lowered position 3A, and the heating device 3 was lifted together with the cooling device by the lifting / lowering means 2 and returned to the original position again.

  It is possible to efficiently and easily clean the base surface without removing and attaching the heat insulation cylinder during the above-mentioned base surface cleaning work and without the cooling device interfering with the work. did it.

It is an apparatus schematic diagram showing an example of a melt spinning apparatus according to the present invention. In the apparatus shown in FIG. 1, it is a side view which shows the state which moved the heating apparatus and the cooling device upwards. In the apparatus shown in FIG. 1, it is a side view which shows the state which moved the heating apparatus and the cooling device below.

Explanation of symbols

1: Cooling device 1A: Cooling device 2 in the lowered position 2: Cooling device lifting / lowering means 3: Heating device 3A: Heating device 3B in the lowered position: Heating device 4 in the retracted position 4: Heating device conveying means 5: Spin pack 6: Base 7: Horizontal guide rail

Claims (1)

  A heating device for heating and keeping the yarn arranged below the spinning pack, a cooling device for cooling the yarn arranged below the heating device, and the heating device and the cooling device in the vertical direction A melt spinning apparatus comprising: an elevating means for moving; and a conveying means for moving the heating device in a retracting direction.

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