JPS6285009A - Quenching apparatus of extruded yarn - Google Patents

Abstract

PURPOSE:To readily change the length of blowing part and blowing gas velocity distribution of quenching gas, by constituting blowing outlets of the quenching gas of porous dispersion bodies on the inside and outside at an interval and providing regulation bodies movable along the inner and outer dispersion bodies in the vertical direction near each dispersion body. CONSTITUTION:Shielding cylinders 14 and 15 provided movably in the vertical direction along an inner dispersion cylinder 6 and outer dispersion cylinder 7. The shielding cylinders 14 and 15 are mounted on movable cylinders 20 and 21 having screw threads 22 and 23 engaging with helical grooves 18 and 19 of both supporting cylinders 6' and 7' to vertically move the movable cylinders 20 and 21 by rotation of rotating shafts 28 and 29. The lengths l and l' of the blowing parts of the inner and outer dispersion cylinders 6 and 7 can be changed to change also the blowing gas velocity distribution of quenching gas.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a device for cooling spun yarns of synthetic fibers by spraying cooling gas thereon, and more particularly to a variable cooling device that can handle small quantities of many brands.

[Prior art 1 Regarding the spinning tube that cools the spun yarn of synthetic fibers,
Several structures have been implemented in the past. For example, (1) the most commonly used ones are:
A porous member including a supply passage for cold fA air and arranged close to the spun yarn to rectify and supply the cooling air is installed one or more porous members, and the porosity of the porous member is changed. For example, there are spinning tubes with optimized blowout wind speed distribution. However, with such a spinning tube, only one type of blowout wind speed distribution and blowout length can be realized, and there is a problem that it cannot be applied to the recent small-lot, multi-brand production. In other words, in recent years, with the diversification of quality in small-lot, multi-brand production, it has become necessary to use a variety of cooling conditions, including rapid cooling and slow cooling. However, it is difficult to deal with this problem, and each time a brand change is made, it is necessary to replace the spinning tube with a spinning tube having an appropriate blow-off tube and wind speed distribution, resulting in a significant loss of productivity.

(2) There are some shapes that solve the above-mentioned drawbacks, such as stacking cooling cylinder parts with short blowing length in multiple stages, but even in this cooling cylinder, the variable range is limited and the wind speed distribution at the connection part Problems such as the fact that the cost is not uniform and that equipment costs increase significantly are discussed in [2].

OBJECT OF THE INVENTION] The present invention has been made against the background of the above circumstances, and its purpose is to arbitrarily and quickly control the blowout length and blowout wind speed distribution of cold FA wind using one cooling device. The purpose of the present invention is to provide a variable spinning tube that can be changed to a variable spinning cylinder and can be adapted to low-cost, low-volume, multi-brand production.

[Structure of the Invention] That is, a cooling device that sprays cooling gas onto a melt-spun yarn, and includes a dispersion made of a porous member.

Two or more cooling gas outlets are provided at intervals on the outside, and regulating bodies with a cooling air blowing length that can move in the vertical direction along the inner and outer distribution bodies are provided on the inner and outer distribution bodies, respectively. This is a cold FA device for spun yarn, which is characterized by being installed close to each other.

[Example 1] The present invention will be explained below based on the drawings. FIG. 1 is a sectional view showing an embodiment of the present invention. In the figure, reference numeral 1 denotes a spin block of a melt-spinning apparatus, in which the spinning pack 2 is heated to a constant (ζ constant) quality. The molten poly ζ7- passes through the spinning pack 2 and is spun out through the spinneret 3 to form yarn Y.

The spun yarn Y is highly heated and is generally cooled uniformly by a cooling device 4 of a spinning tube placed directly below the spinneret 3 in order to adjust the physical properties of the yarn such as strength and elongation. Cooling device 4
The apparatus includes a main body 543 of the cooling fj1 apparatus and a means 13 for varying the length of the cooling air blower.

The main body 5 has an internal dispersion cylinder 6 made of a porous plate constituting a porous member, an external dispersion cylinder 7 made of sintered metal, and an outer cylinder 8 surrounding the outside of the external dispersion cylinder arranged side by side at a predetermined interval from the inside. The outer cylinder 8 is formed so that the upper half thereof is narrowed into a conical shape, and the space between the outer cylinder 8 and the external dispersion cylinder 7 is provided so as to become a pressure equalization chamber 9.

A cooling air introduction pipe 10 is connected to the lower part of the outer cylinder 8, and a dispersion plate 12 formed in the shape of a multi-hole inverted cone is attached to the upper part of the introduction port 11 so as to close the pressure equalization chamber 9.

The blow length variable means 13 includes shielding cylinders 14 and 15 that are movable up and down along the dispersing cylinders 6 and 7, and a drive mechanism for moving these cylinders.

The internal dispersing cylinder 6 extends downward longer than the external dispersing cylinder 7, and both dispersing openings 6 and 7 have their lower ends connected to supporting cylinders 6' and 7'.
is fixed to. 16 and 17 are the support tubes 6', respectively.
, 7'.

A spiral groove 18.19 formed with a predetermined bit is provided on the outside of both support tubes 6', 7', respectively, and engages with 17i18.19 corresponding to the support tubes 6', 7'. A movable tube 20.21 having a length of approximately the same diameter and having spiral stripes 22.23 carved therein is inserted, and the movable tube 20.
A shielding tube 14, 15 of a predetermined length is attached to each of the holes 21. A vertical groove is carved along the entire length of the outer peripheral surface of the shielding cylinder 14.15 to form a spur gear 24.25, and a rotating shaft 28.29 has a pinion 26.27 vertically arranged to mesh with the spur gear 24.25. It is attached to the tip of the cylinder 20.

The rotating shafts 28, 29 are rotatably supported via bearings (not shown) provided on the partition plates 16, 17, and bevel gears 30, 31 are attached to the lower end, and are supported by brackets (not shown). It is designed to mesh with bevel gears 34 and 35 provided at the tips of drive shafts 32 and 33 that are rotatably held.

36 and 37 are handles attached to the rear ends of the drive shafts 32 and 33. In order to prevent leakage of cold KI air in the cold Ij1 device, it is preferable to provide appropriate sealing means at leak-prone locations such as the rotating shaft.

In such a device, the blowout direction ρ of the internal dispersion tube 6 can be changed by turning the handle 36, for example. Normally, this change is sufficient for less than half of the maximum length, but if a larger change is required, the movable tube 20 (or movable tube 21 in the case of the dispersion tube 7) may be changed accordingly. It is only necessary to increase the length, and this allows for arbitrary changes. In this case, a further significant feature of the present invention is that the blowing length p' of the outer external dispersion cylinder 7 can be made variable. In this way, by changing the blowout lengths .rho. and u' of the inner and outer dispersion cylinders 6.degree.7, it is also possible to change the blowout speed distribution of the cooling air. For example, FIGS. 2 to 4 schematically show the relative positional relationship of the shielding cylinders 14.15, and FIG. 2 shows the two shielding cylinders 14.1.
5 are at the same height, and the average blowing wind speed distribution is shown. FIG. 3 shows a case where the external M shield cylinder 15 is set at a low position, and the blowing wind speed distribution is of a slow cooling type. Moreover, in FIG. 4, on the other hand, when the external shielding cylinder 15 is set at a high position, a rapid cooling type blowout wind speed distribution is formed. By combining the two shielding tubes 14 and 15 in this way, the wind speed distribution can be changed over a wide range. From then on, there are two shielding tubes 4
Although this is an example using 4.15, the number may be three or more, or the number of dispersing cylinders may be three or more and shielding cylinders may be combined as appropriate.

Furthermore, the means for vertically moving the shielding cylinder 14,15 is a spiral thread 22°2.
3 was used, but due to simple engagement of screws, etc.
Any other means may be used, such as a hydraulic cylinder or a rack-binion.

Also, the shielding tube and movable tube slide into the dispersion tube and support tube.

It is preferable to slide or closely move up and down,
Even if you try to move 4 while close to each other, it is still difficult (for convenience, we refer to these as close). Although a cylindrical cold N1 device will not be explained in this embodiment, it can be similarly applied to a cooling device with one cross-blown spinning tube that blows out from one side at right angles to the yarn. Needless to say.

[Effects of the Invention] As explained above, according to the present invention, although there is only one cooling air supply passage for one spinning tube as in the prior art, the yarn can be spun with simple operation. It is possible to quickly change the cooling air blowing length and the cold sweat air velocity distribution without cutting the fibers, making it indispensable for future spinning machines that can handle small-lot, multi-brand production, and from a productivity standpoint. As you can see, the ability to spin one culm can be greatly improved.

[Brief explanation of drawings]

Figure 1 is a sectional view showing one embodiment of the present invention, Figures 2 and 3 are
4 and 4 are explanatory diagrams each schematically showing the blowout wind velocity distribution obtained by the spinning tube of the embodiment shown in FIG. 1 together with the relative positional relationship of the two shielding tubes. 4...Cold fJ'l device, 5...Main body. 6... Internal dispersion cylinder, 7... External dispersion cylinder. 8...Outer cylinder, 13...Variable means. 14, 15... Shield tube, 20.21...
・Movable tube.

Claims (1)

[Claims] A cooling device that sprays cooling gas onto melt-spun yarn,
In addition to providing two or more cooling gas outlets with dispersion bodies made of porous material spaced apart inside and outside, the length of the cooling air blowout is regulated so as to be movable in the vertical direction along the inner and outer dispersion bodies. A cooling device for spun yarn characterized in that a body is provided close to an inner dispersion body and an outer dispersion body, respectively.