JP7149100B2 - Spinning cooling device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a spinning cooling device for cooling synthetic resin filaments spun from a spinning section.

For example, the spinning cooling device described in Patent Document 1 has a cooling cylinder and a partition cylinder in which synthetic resin filaments spun from a spinning beam run, and the filaments are cooled by cooling air flowing from the peripheral wall of the cooling cylinder. Cool and solidify. The cooling cylinder and the partition cylinder are housed in a metal box, and the cooled filaments come out from an outlet formed on the bottom surface of the box.

In a general spinning production facility, a spinning beam and a spinning cooling device are arranged on the upper floor, and a winding device for winding the yarn is arranged on the lower floor. For this reason, at the start of yarn production, the operator on the upper floor unloads the filament coming out of the exit of the spinning cooling device to the lower floor (hereinafter referred to as yarn unloading work), and the other operators on the lower floor do so. is received and the threading operation to the winding device etc. is performed. The upper and lower floors are connected by a duct through which the filament is lowered.

JP 2017-145525 A

During the unloading operation, the operator sometimes grabs the filament coming out of the outlet of the spinning cooling device and pulls it sideways, and at that time, the filament sometimes comes into contact with the periphery of the outlet. In addition, for example, when using an inclined plate as shown in FIG. 7(a) of Japanese Patent No. 6291049, the filament on the inclined plate is grabbed and pulled sideways, When the filament was sucked by the suction device, the filament sometimes came into contact with the periphery of the outlet. Since the box is made of metal, when the synthetic resin filament comes into contact with the outlet, electric charges move between the filament and the outlet, generating static electricity on the filament. As a result, the filament clings to the spinning cooling device and the operator, or clings to the inner peripheral surface of the duct connecting the upper floor and the lower floor, making it difficult to unload the yarn. In addition, the filaments repel each other and spread, failing to converge, making it difficult for the operator to grasp the filaments.

SUMMARY OF THE INVENTION In view of the above problems, an object of the spinning cooling device according to the present invention is to suppress the static electricity generated by the contact of the filament with the exit part and to facilitate the yarn unloading operation.

In the present invention, a cylindrical space to which cooling air is supplied is formed in the vertical direction, and synthetic resin filaments spun from the spinning unit are driven through the cylindrical space and then come out from the lower outlet. wherein, when the filament comes into contact with the filament, a static electricity suppressing section having insulating properties is provided at the periphery of the outlet section to suppress static electricity from being generated in the filament in contact with the exit section. It is characterized by

In the spinning cooling apparatus according to the present invention, a static electricity suppressing portion having insulating properties is provided at the peripheral edge of the exit portion to suppress the generation of static electricity in the contacting filaments when the filaments come into contact with each other. Charge transfer hardly occurs between the filament and the static electricity suppressing portion having insulating properties even when they come into contact with each other. Therefore, if the thread unloading operation is performed so that the filament is brought into contact with the static electricity suppressing portion instead of the exit portion, the generation of static electricity on the filament can be suppressed and the thread unloading operation can be facilitated.

In the present invention, it is preferable that the static electricity suppressing section is configured by an insulating member different from the outlet section.

For example, it is possible to configure the static electricity suppressing section by applying insulating paint to the exit section. However, in this case, there are restrictions on the paint that can be used, and there is a risk that the paint will come off when it comes into contact with the filament. In this respect, if the static electricity suppressing portion is made of an insulating member different from that of the outlet portion, instead of paint or the like, there will be a wide range of material choices, and the optimum material can be selected from various viewpoints.

In the present invention, it is preferable that the insulating member has a ring shape along the entire periphery of the outlet.

If the insulating member is ring-shaped, the filament can be reliably brought into contact with the insulating member during the unwinding operation. Therefore, it is possible to more effectively suppress the generation of static electricity in the filament.

In the present invention, the inner diameter of the insulating member having the ring shape is preferably the same as the diameter of the cylindrical space.

If the inner diameter of the ring-shaped insulating member is smaller than the diameter of the cylindrical space, the cylindrical space will be narrowed, which may hinder the running of the filament. On the other hand, if the inner diameter of the insulating member is larger than the diameter of the cylindrical space, the filament tends to come into contact with the outlet instead of the insulating member. Therefore, as described above, by making the inner diameter of the insulating member the same as the diameter of the cylindrical space, the filament can be reliably brought into contact with the insulating member without narrowing the cylindrical space.

In the present invention, at least the inner peripheral side of the lower end portion of the insulating member is preferably formed in a curved shape.

With this configuration, the filament contacts the curved portion of the insulating member, so that damage to the filament due to contact with the insulating member can be suppressed.

In the present invention, the insulating member is preferably made of ceramics.

Since ceramics have excellent wear resistance, if the insulating member is made of ceramics, it is possible to suppress abrasion of the insulating member due to contact of the filaments.

In the present invention, it is preferable that the insulating member is satin-finished.

By applying the satin finish to the insulating member, fine unevenness is formed on the surface, so that the contact resistance of the filament can be reduced. As a result, static electricity generated by friction can be suppressed more effectively.

In the present invention, the insulating member may be detachably attached to the outlet.

If the insulating member is detachable, it can be easily replaced when the insulating member is worn or the like.

In the present invention, an extension tube for extending the tubular space is attachable to the outlet, and when the extension tube is attached, the insulating member is attached to the lower end of the extension tube. good.

In some cases, an extension tube is attached to the outlet in order to enhance the cooling effect, but if the insulating member is detachable, the insulating member can be easily replaced from the outlet to the extension tube.

In the present invention, a cylinder into which the cooling air can flow from a part of the peripheral wall and a box that houses the cylinder are provided, and the insulating member is provided on the lower surface of the box together with the cylinder They should be tightened together.

By fastening the insulating member together with the cylindrical body, the number of parts and the number of assembly steps can be reduced.

In the present invention, it is preferable to cool a plurality of filaments.

When one yarn is produced from a plurality of filaments, one filament becomes thin and is easily affected by static electricity, making it difficult to unwind the yarn. Therefore, the present invention, which can suppress the generation of static electricity in the filament, is particularly effective.

In the present invention, the thickness of one filament is preferably 6 dtex or less.

As described above, the finer the filament, the more susceptible it is to static electricity, and the more difficult it is to unload the filament, so the present invention is particularly effective.

In the present invention, the filaments are preferably made of nylon 6 or PET-cation.

Filaments made of nylon 6 or PET-cations generate a particularly large amount of static electricity when they come into contact with the outlet. Therefore, the present invention, which can suppress the generation of static electricity in the filament, is particularly effective.

1 is a cross-sectional view of a melt spinning apparatus according to this embodiment; FIG. FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1; 4 is an enlarged view of the vicinity of the exit part of the spinning cooling device of the present embodiment. FIG. It is a figure at the time of attaching an extension cylinder. Chemical formulas for nylon 6 and PET-cations. It is a table|surface which shows the result of a verification experiment. It is a figure which shows the modification of an insulating member. It is a figure which shows the modification of an insulating member. FIG. 3 is an enlarged view of the vicinity of the outlet of a conventional spinning cooling device;

An embodiment of a melt spinning apparatus to which a spinning cooling apparatus according to the present invention is applied will be described with reference to the drawings.

(Melt spinning device)
FIG. 1 is a cross-sectional view of a melt spinning apparatus according to this embodiment, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. The up-down direction, front-rear direction, and left-right direction of the melt spinning apparatus 1 of this embodiment are defined as shown in FIGS. 1 and 2 . The melt spinning device 1 includes a spinning beam 2 (corresponding to the spinning section of the present invention), a spinning cooling device 3 and an oil agent guide 4 .

The spinning beam 2 is for spinning a plurality of yarns Y made of synthetic resin. A pack housing 11 of the spinning beam 2 is fitted with a plurality of spinning packs 12 . The spinning packs 12 are arranged in two rows in a staggered manner along the left-right direction. A spinneret 13 having a plurality of nozzles 14 formed therein is arranged at the lower end of the spinning pack 12 . When molten polymer is supplied to the spinning pack 12 from a pipe or the like (not shown), the molten polymer is spun out from a plurality of nozzles 14 of the spinneret 13 as filaments f. That is, the spinning beam 2 of the present embodiment spins a multifilament yarn Y composed of a plurality of filaments f.

The spinning cooling device 3 is for cooling the plurality of filaments f spun from the spinning beam 2 . A spinning cooling device 3 is arranged below the spinning beam 2 . The spinning cooling device 3 has a rectangular parallelepiped box 20 and a plurality of cylinders 21 housed in the box 20 . Both the box 20 and the cylinder 21 are made of metal. The cylinders 21 extend in the vertical direction directly below the spinning packs 12 and are arranged in two rows in a zigzag pattern along the horizontal direction corresponding to the arrangement of the spinning packs 12 (see FIG. 2). The inner space of the cylindrical body 21 is a vertically extending cylindrical space 22 in which a plurality of filaments f spun from the spinning pack 12 run.

The internal space of the box 20 is vertically partitioned by a rectifying plate 23 arranged substantially horizontally. The rectifying plate 23 is made of a material having a rectifying function such as punching metal. The cylinder 21 is arranged in a cooling cylinder 24 arranged in the upper space of the box 20 (the space above the current plate 23) and in the lower space of the box 20 (the space below the current plate 23). The partition tube 25 is continuously connected in the vertical direction. A peripheral wall of the cooling cylinder 24 is made of a material having a rectifying function such as punching metal, and cooling air, which will be described later, can flow into the inside. On the other hand, unlike the cooling cylinder 24, the peripheral wall of the partition cylinder 25 is made of a material that does not allow cooling air to pass through.

Openings 26a and 27a having substantially the same diameter as the inner diameter of the cylindrical body 21 are formed in the portions of the upper surface 26 and the lower surface 27 of the box 20 where the cylindrical body 21 is arranged. The openings 26 a and 27 a communicate with the tubular space 22 inside the tubular body 21 . The filament f spun from the spinning beam 2 enters the tubular space 22 through the opening 26a and exits through the opening 27a. That is, the opening 27a corresponds to the outlet of the present invention. The opening 27a is hereinafter referred to as the outlet 27a. An insulation unit 30 is provided at the exit portion 27a, which will be described later in detail.

A connecting portion 28 is formed in the lower rear portion of the box 20 , and a duct 29 is connected to the connecting portion 28 . The duct 29 is connected to a cooling air supply source (not shown). The cooling air supplied from the cooling air supply source flows through the duct 29 into the lower space of the box 20 . As indicated by arrows in FIG. 1 , the cooling air flowing into the lower space of the box 20 passes through the rectifying plate 23 and is rectified upward to flow into the upper space of the box 20 . The cooling air that has flowed into the upper space of the box 20 is straightened when passing through the peripheral wall of the cooling cylinder 24 and flows into the cooling cylinder 24 . As a result, the plurality of filaments f running in the tubular space 22 inside the tubular body 21 are cooled and solidified by the cooling air. Since the peripheral wall of the partition tube 25 does not pass the cooling air, the cooling air does not directly flow into the partition tube 25 from the lower space of the box 20 .

The oil guide 4 is for applying oil to the yarn Y. As shown in FIG. The oil solution guide 4 is arranged below the spinning cooling device 3 . The yarn Y cooled by the spinning cooling device 3 contacts the oil agent guide 4 . At that time, the oil agent guide 4 discharges the oil agent to the yarn Y to apply the oil agent to the yarn Y. As shown in FIG. The yarn Y to which oil has been applied by the oil guide 4 is wound around a bobbin by a winding device (not shown) arranged below the oil guide 4 to form a package.

(Conventional problems)
FIG. 9 is an enlarged view of the vicinity of the outlet 27a of the conventional spinning cooling device 103. As shown in FIG. The same reference numerals are given to the parts common to this embodiment. In a general spinning production facility, the spinning beam 2 and the spinning cooling device 3 are arranged on the upper floor, and a winding device (not shown) for winding the yarn Y is arranged on the lower floor. Therefore, when the production of the yarn Y is started, the operator on the upper floor carries out the yarn unloading operation of lowering the filament f coming out of the exit 27a of the spinning cooling device 103 to the lower floor. It receives the yarn Y unloaded from the floor and performs the yarn hooking work to the winding device or the like. The upper floor and the lower floor are connected by a duct, and the filament f is lowered in the duct.

In the yarn unloading operation, when the operator cuts off unnecessary portions of the plurality of filaments f coming out of the exit portion 27a or throws down the plurality of filaments f to the lower floor, the plurality of filaments f are pushed sideways. You may be pulled. At this time, as shown in FIG. 9, in the conventional spinning cooling device 103, the filament f sometimes comes into contact with the peripheral edge of the exit portion 27a. Since the outlet portion 27a (the box body 20) is made of metal, when the synthetic resin filament f contacts the outlet portion 27a, electric charge is transferred between the filament f and the outlet portion 27a, and the filament f is charged. Static electricity is generated. As a result, the filament f clings to the spinning cooling device 103 and the operator, or clings to the inner peripheral surface of the duct connecting the upper floor and the lower floor, making the unloading operation difficult. In addition, the filaments f repel each other and spread, failing to converge, making it difficult for the operator to grasp the filament f itself.

(insulating member)
Therefore, in the present embodiment, an insulating unit 30 is provided around the exit portion 27a in order to suppress the generation of static electricity in the filament f during the thread unloading operation. FIG. 3 is an enlarged view of the vicinity of the exit portion 27a of the spinning cooling device 3 of this embodiment. The insulation unit 30 has an insulation member 31 and a mounting member 32 . The insulating member 31 is a ring-shaped (cylindrical) member made of insulating ceramics. On the other hand, the mounting member 32 is a metal ring-shaped member. The insulating member 31 and the mounting member 32 are integrated by an appropriate method such as screwing or adhesion, thereby forming the insulating unit 30 . The inner diameters of the insulating member 31 and the mounting member 32 are both substantially the same as the diameter of the tubular space 22 (the inner diameter of the tubular body 21).

The insulating unit 30 is detachably attached to the outlet portion 27a, and is attached to the outlet portion 27a so that the insulating member 31 is on the lower side and the mounting member 32 is on the upper side. Specifically, a flange portion 32 a is formed at the upper end portion of the mounting member 32 . A flange portion 25a is formed at the lower end portion of the cylinder 21 (partition cylinder 25) arranged in the box 20. As shown in FIG. Both the flange portion 32a of the mounting member 32 and the flange portion 25a of the tubular body 21 are fixed to the lower surface 27 of the box body 20 from below with bolts 33 . In other words, the insulating member 31 is fastened together with the cylindrical body 21 to the lower surface 27 of the box body 20 via the mounting member 32 .

As shown in FIG. 3, when the filament f coming out of the exit portion 27a is pulled sideways during the thread unloading operation, the filament f comes into contact with the lower end portion of the insulating member 31. As shown in FIG. Since the insulating member 31 has insulating properties, even if the filament f comes into contact with the insulating member 31, almost no electric charge is transferred between the filament f and the insulating member 31. FIG. Therefore, it is possible to suppress the generation of static electricity in the filament f during the thread unloading operation. In this embodiment, the insulating member 31 is satin finished. As a result, fine irregularities are formed on the surface of the insulating member 31, and the contact resistance of the filament f can be reduced, so that static electricity generated by friction can be suppressed more effectively. Further, in order to suppress damage when the filament f comes into contact with the insulating member 31, the lower end portion of the insulating member 31 is formed in a curved shape protruding downward.

(When installing an extension cylinder)
FIG. 4 is an enlarged view of the vicinity of the outlet portion 27a when the extension tube 35 is attached. In order to improve the cooling effect of the filament f by the spinning cooling device 3, as shown in FIG. The extension tube 35 is a tubular member having flanges 35a and 35b at its upper and lower ends, and is made of a material that does not allow passage of fluid. By attaching the extension cylinder 35 to extend the cylindrical space 22, the filament f can be cooled more effectively by the cooling air.

When attaching the extension tube 35 , the bolt 33 is loosened and the insulating unit 30 is removed from the lower surface 27 of the box 20 . Instead, the upper flange portion 35 a of the extension tube 35 is fixed to the lower surface 27 of the box 20 with bolts 33 . The insulation unit 30 is attached to the lower flange portion 35 b of the extension tube 35 with bolts 36 . Thus, the insulation unit 30 (insulation member 31) of the present embodiment is configured to be detachable from each of the outlet portion 27a and the extension tube 35. As shown in FIG.

(type of filament)
The molten polymer spun from the spinning beam 2 of the present embodiment is, for example, nylon 6 (PA6) having a chemical formula shown in FIG. terephthalate)-cation. The present inventors have empirically found that the amount of static electricity is particularly large in the case of the filament f made of these materials. Therefore, the present invention is particularly effective in suppressing static electricity generated in the filament f. Further, the present invention is suitably applied when the thickness of one filament f is, for example, 6 dtex (decitex) or less. This is because thin filaments f are susceptible to static electricity. However, the material of the filament f may be synthetic resin other than nylon 6 and PET-cation, and the thickness of the filament f is not limited to 6 dtex or less.

(Verification experiment)
Next, a verification experiment was conducted to examine how much effect can actually be obtained when the insulating member 31 is provided. FIG. 6 is a table showing the results of verification experiments. This verification experiment is intended for the case of producing a multifilament yarn Y made of PET-cations. This multifilament yarn Y consists of 144 filaments f and has a thickness of 136 dtex. The thickness of one filament f is about 0.94 dtex. In this verification experiment, the static electricity of the filament f was measured for three cases: the case where the insulating member 31 with the satin finish was provided, the case where the insulating member 31 with the polished finish was provided, and the case where the insulating member 31 was not provided. We checked the amount of thread and whether it was possible to unload the thread.

As shown in FIG. 6, compared with the case where the insulating member 31 is not provided, the amount of static electricity is greatly reduced to about 1/80 to 1/15 when the insulating member 31 with the satin finish is provided. , the thread unloading work can also be performed satisfactorily. In addition, when the insulating member 31 that has been polished is provided, the static electricity reduction effect is smaller than that of the satin finish, but the amount of static electricity can be reduced to about 1/10. It is now possible to unload the thread, which was previously difficult. Thus, it was shown that providing the insulating member 31 with insulating properties at the exit portion 27a of the spinning cooling device 3 has a great effect.

(effect)
In the present embodiment, when the filament f comes into contact with the peripheral edge of the exit portion 27a of the spinning cooling device 3, the static electricity suppressing portion (insulating member 31) having insulating properties suppresses the generation of static electricity in the filament f. is provided. Between the filament f and the static electricity suppressing portion 31 having insulating properties, even if they come into contact with each other, almost no electric charges move. Therefore, if the thread unloading operation is performed so that the filament f is brought into contact with the static electricity suppressing portion 31 instead of the outlet portion 27a, the generation of static electricity in the filament f can be suppressed and the thread unloading operation can be facilitated.

In this embodiment, the static electricity suppressing portion is configured by an insulating member 31 separate from the outlet portion 27a. For example, it is possible to configure the static electricity suppressing section by applying insulating paint to the exit section 27a. However, in this case, there are restrictions on the paint that can be used, and there is a possibility that the paint will come off when it comes into contact with the filament f. In this respect, if the static electricity suppressing portion is formed of the insulating member 31 separate from the outlet portion 27a instead of paint or the like, the choice of materials becomes abundant and the optimum material can be selected from various viewpoints.

In this embodiment, the insulating member 31 has a ring shape covering the entire periphery of the outlet portion 27a. If the insulating member 31 is ring-shaped, the filament can be reliably brought into contact with the insulating member 31 during the unwinding operation. Therefore, it is possible to more effectively suppress the generation of static electricity in the filament f.

In this embodiment, the inner diameter of the ring-shaped insulating member 31 is substantially the same as the diameter of the tubular space 22 . If the inner diameter of the ring-shaped insulating member 31 is smaller than the diameter of the cylindrical space 22, the cylindrical space 22 will be narrowed, which may hinder the running of the filament f. On the other hand, if the inner diameter of the insulating member 31 is larger than the diameter of the tubular space 22, the filament f tends to contact the outlet portion 27a instead of the insulating member 31. As shown in FIG. Therefore, by setting the inner diameter of the insulating member 31 to be the same as the diameter of the cylindrical space 22 as described above, the filament f can be reliably brought into contact with the insulating member 31 without narrowing the cylindrical space 22 .

In this embodiment, at least the inner peripheral side of the lower end portion of the insulating member 31 is formed in a curved shape. In this way, the filament f comes into contact with the curved portion of the insulating member 31, so that damage to the filament f due to contact with the insulating member 31 can be suppressed.

In this embodiment, the insulating member 31 is made of ceramics. Since ceramics have excellent abrasion resistance, if the insulating member 31 is made of ceramics, abrasion of the insulating member 31 due to contact with the filament f can be suppressed.

In this embodiment, the insulating member 31 is satin finished. By subjecting the insulating member 31 to a satin finish, the surface of the insulating member 31 has minute unevenness, so that the contact resistance of the filament f can be reduced. As a result, static electricity generated by friction can be suppressed more effectively.

In this embodiment, the insulating member 31 is detachably attached to the outlet portion 27a. If the insulating member 31 is detachable, it can be easily replaced when the insulating member 31 is worn or the like.

In this embodiment, an extension tube 35 for extending the tubular space 22 is configured to be attachable to the outlet portion 27a. When the extension tube 35 is attached, the insulating member 31 is attached to the lower end of the extension tube 35 be done. An extension tube 35 may be attached to the outlet portion 27a in order to enhance the cooling effect.

In this embodiment, the spinning cooling device 3 includes a cylinder 21 into which cooling air can flow from a part of the peripheral wall, and a box 20 that houses the cylinder 21. The insulating member 31 is a box. It is fastened together with the cylindrical body 21 to the lower surface 27 of 20 . By fastening the insulating member 31 together with the cylindrical body 21, the number of parts and the number of assembling man-hours can be reduced.

In this embodiment, the spinning cooling device 3 cools the plurality of filaments f. When one yarn Y is produced from a plurality of filaments f, one filament f becomes thin and is easily affected by static electricity, making it difficult to remove the yarn. Therefore, the present invention, which can suppress the generation of static electricity in the filament f, is particularly effective.

In this embodiment, the thickness of one filament is 6 dtex or less. As described above, the finer the filament f, the more likely it is to be affected by static electricity, making it more difficult to unload the filament. Therefore, the present invention is particularly effective.

In this embodiment, the filaments f consist of nylon 6 or PET-cation. The filament f made of nylon 6 or PET-cation generates a particularly large amount of static electricity when it comes into contact with the exit portion 27a. Therefore, the present invention, which can suppress the generation of static electricity in the filament f, is particularly effective.

(Other embodiments)
Modifications in which various modifications are made to the above embodiment will be described.

In the above-described embodiment, the insulating member 31, which is a separate member from the outlet portion 27a, is provided as the static electricity suppressing portion of the present invention. However, it is also possible to configure the static electricity suppressing section by, for example, applying insulating paint to the exit section 27a.

In the above-described embodiment, the insulating member 31 has a ring shape covering the entire periphery of the outlet portion 27a. However, it is not essential that the insulating member 31 be ring-shaped. FIG. 7 is a diagram showing a modification of the insulating member, and FIG. 7b is a diagram of the outlet 27a viewed from below. For example, as shown in FIG. 7, the insulating unit 40 (the insulating member 41 and the mounting member 42) of the above-described embodiment may be provided only on part of the periphery of the outlet portion 27a. In FIG. 7, the insulating member 41 is provided on the half circumference of the periphery of the outlet portion 27a, but it is not limited to the half circumference. In the case where the insulating member 41 is provided not on the entire periphery but on a part of the periphery, the filament f may be pulled to the side on which the insulating member 41 is provided during the thread unwinding operation. By doing so, the filament f can be brought into contact with the insulating member 41 instead of the exit portion 27a, and static electricity generated in the filament f can be suppressed.

In the above-described embodiment, the insulating member 31 is detachably attached to the outlet portion 27a via the attachment member 32 . However, as shown in FIG. 8, the insulating member 51 may be attached directly to the outlet portion 27a (the lower surface 27 of the box 20). Alternatively, the insulating member may be attached to the outlet portion 27a in a non-detachable manner (for example, adhesive).

In the above embodiment, the insulating member 31 is made of ceramics. However, the insulating member may be a material other than ceramics as long as it is a material having insulating properties.

In the above embodiment, the inner diameter of the insulating member 31 is substantially the same as the diameter of the tubular space 22 . However, the inner diameter of the insulating member 31 may be slightly larger or smaller than the diameter of the tubular space 22 . Specifically, there is no particular problem whether the inner diameter of the insulating member 31 is larger or smaller than the diameter of the cylindrical space 22 as long as the difference between the two is up to about 1 mm.

In the above embodiment, the insulating member 31 has a cylindrical shape with an inner diameter substantially equal to the diameter of the cylindrical space 22 . However, the inner diameter of the insulating member 31 may have a tapered shape that widens as it approaches the opening 27a.

2: Spinning beam (spinning section)
3: Spinning cooling device 20: Box 21: Cylindrical body 22: Cylindrical space 27: Lower surface of box 27a: Outlet part 31, 41, 51: Insulating member (static electricity suppression part)
35: Extension tube f: Filament Y: Thread

Claims (11)

A cylindrical space to which cooling air is supplied is formed in the vertical direction, and synthetic resin filaments spun from the spinning unit are configured to travel through the cylindrical space and then exit from the lower outlet. A spinning cooling device,
A static electricity suppressing portion having insulation is provided on the periphery of the outlet portion to suppress static electricity from being generated in the filament when the filament comes into contact with the outlet portion,
The static electricity suppressing section is configured by an insulating member different from the outlet section,
A spinning cooling apparatus, wherein the insulating member is detachably attached to the outlet. 2. The spinning cooling device according to claim 1, wherein the insulating member has a ring shape extending all around the periphery of the outlet. 3. The spinning cooling device according to claim 2, wherein the inner diameter of the insulating member having the ring shape is the same as the diameter of the cylindrical space. 4. The spinning cooling device according to claim 2, wherein at least the inner peripheral side of the lower end portion of the insulating member is formed in a curved shape. The spinning cooling device according to any one of claims 1 to 4, wherein the insulating member is made of ceramics. The spinning cooling device according to any one of claims 1 to 5, wherein the insulating member is subjected to satin finishing. An extension cylinder for extending the cylindrical space is configured to be attachable to the outlet,
The spinning cooling device according to any one of claims 1 to 6, wherein when the extension tube is attached, the insulating member is attached to the lower end portion of the extension tube. a cylindrical body into which the cooling air can flow from a part of the peripheral wall;
a box that accommodates the cylinder;
and
8. The spinning cooling device according to claim 7, wherein the insulating member is fastened together with the cylindrical body to the lower surface of the box body. The spinning cooling device according to any one of claims 1 to 8 , characterized in that it cools a plurality of said filaments. 10. The spinning cooling device according to claim 9 , wherein the thickness of one filament is 6 dtex or less. A spinning cooler according to any one of claims 1 to 10 , characterized in that said filaments are made of nylon 6 or PET-cation.

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