JPH101817A - Spinning pack device for melt spinning of thermoplastic synthetic fiber - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a spinning pack device for a melt spinning of a thermoplastic synthetic fiber, facilitating an exchange of the pack by one operator, not rotating around the axis of the spinning when the pack is installed and capable of spinning out a fiber at an optimum state to the blowing direction of a cooling wind of a spinning chimney. SOLUTION: A supporting block 33 is attached to an entrance part of a concave part 11a for housing a nozzle pack of a spinning block 11, a wear plate 12 having an engaging protrusion 12a is attached to the ceiling part of the concave part 11a for housing the nozzle pack and an engaging groove engaging with the engaging protrusion 12a of the wear plate 12 is arranged on the upper part of the main body 22 of the nozzle pack. Further, a male screw is formed on the periphery of the bottom end part of the main body 22 of the nozzle pack and a ring 31 having a female screw screwed onto the male screw of the main body 22 of the spinning nozzle and engaging to the supporting block 33 is screwed onto the bottom end part of the main body 22 of the spinning nozzle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spinning pack apparatus for melt-spinning thermoplastic synthetic fibers. More specifically, the present invention provides a spin pack in which a nozzle pack storage recess is formed, a molten spinning solution passage is opened in the nozzle pack storage recess, and a cylindrical nozzle pack is installed in the nozzle pack storage recess of the spin block. It is a spinning pack device for melt spinning of thermoplastic synthetic fibers being worn,
The present invention relates to a device that can quickly and easily attach and remove a nozzle pack to and from a nozzle pack storage recess of a spin block.

[0002]

2. Description of the Related Art In a conventional spinning pack apparatus for melt spinning of thermoplastic synthetic fibers, a spinneret, a bridge plate, a sand, a top insert, a seal ring, etc. are housed in a nozzle pack body in advance and assembled. Lift the nozzle pack assembled from below the spin block into the nozzle pack storage recess formed in the block, penetrate the nozzle pack fixing bolt through the spin block from the top of the spin block, and screw it into the nozzle pack. Was fixed.

In such a conventional spinning pack apparatus for melt-spinning thermoplastic synthetic fibers, at least two workers are required for lifting the nozzle pack, penetrating and screwing bolts for fixing the nozzle pack. is there.

Japanese Patent Laid-Open Publication No. 8-500650 discloses a spin block in which a nozzle block is provided with a rest portion protruding outward at a lower portion of a nozzle pack main body holding a nozzle plate. The support block is attached, the assembled nozzle pack body is lifted from below the spin block, the rest of the nozzle pack body is engaged with the support block, and the nozzle pack is supported by twisting the nozzle pack around the spinning axis. An apparatus is disclosed which is held on a block and exerts a sealing force between a nozzle pack and a spin block.

In the apparatus disclosed in Japanese Patent Application Laid-Open No. 8-500650, the nozzle pack is engaged with the support block and held by twisting the nozzle pack around the spinning axis. The nozzle pack rotates around the spinning axis when installed, and it is difficult to determine the position of the yarn spun from such a melt spinning device around the spinning axis. Usually, a spinning cylinder for cooling the yarn is provided below the spin block, and a cooling air for cooling the yarn spun from the nozzle pack is blown out. Increase the cooling effect of this cooling air,
In order to improve the quality of the obtained yarn, it is necessary that the relative position between the cooling air and the spun yarn has a predetermined relationship. However, as described above, in the apparatus disclosed in Japanese Patent Application Laid-Open No. 8-500650, the nozzle pack rotates around the spinning axis at the time of installation, and rotates around the spinning axis of the yarn spun from the melt spinning apparatus. Since the position is difficult to determine, it is difficult to make the direction of blowing the cooling air from the spinning cylinder for cooling the yarn into an optimal state with respect to the yarn. For this reason, in this device, the cooling effect of the cooling air cannot be enhanced, and the quality of the obtained yarn cannot be enhanced.

In the apparatus disclosed in Japanese Patent Publication No. 8-500650, the sealing force is obtained by twisting the nozzle pack around the spinning axis.
When the nozzle pack is mounted, a rotational force acts on the seal member between the nozzle pack and the bell-shaped receptacle, so that the seal member is easily damaged.

Further, in the apparatus disclosed in Japanese Patent Application Laid-Open No. 8-500650, the rest of the nozzle pack body protrudes outward, so that the nozzle pack body is easily damaged during cleaning, preheating or transportation. .

[0008]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a spinning pack apparatus for melt-spinning thermoplastic synthetic fibers in which the pack can be replaced by one person in view of the above-mentioned problems of the prior art.

[0009] The present invention further provides a nozzle pack that does not rotate around the spinning axis at the time of mounting, determines the position of the yarn spun from the melt spinning device around the spinning axis, and blows the cooling air from the spinning cylinder. It is an object of the present invention to provide a spinning pack apparatus for melt spinning thermoplastic synthetic fibers, which can be in an optimum state with respect to the yarn, can enhance the cooling effect of cooling air, and have a high yarn quality.

The present invention also provides a spinning pack apparatus for melt-spinning thermoplastic synthetic fibers, in which the nozzle pack does not rotate around the spinning axis at the time of mounting, and the seal member between the nozzle pack and the wear plate is not easily damaged. The purpose is to do.

Further, the present invention eliminates a portion protruding from the nozzle pack body at the time of washing, preheating, or transporting, so that the thermoplastic synthetic fiber is hardly damaged during washing, preheating, or transporting of the nozzle pack body. It is an object of the present invention to provide a spinning pack device for melt spinning.

[0012]

In the present invention, the above object is achieved by forming a nozzle pack storage recess in a spin block, and opening a molten spinning solution passage in the nozzle pack storage recess. In a spinning pack device for melt-spinning thermoplastic synthetic fibers in which a nozzle pack having a cylindrical shape is attached to a nozzle pack storage recess,
A support plate is mounted around the entrance of the nozzle pack storage recess of the spin block, and a wear plate having an engagement protrusion extending in the axial direction on the outer peripheral surface is attached to the ceiling of the nozzle pack storage recess. A cylindrical inner wall surface having an engagement groove for engaging with an engagement projection of the wear plate is formed on an upper portion of the nozzle pack body, and a female screw wall surface having a female screw located below the cylindrical inner wall surface is formed. A male screw formed on the outer peripheral surface of the lock ring is screwed with the female screw and presses, via a seal ring, a top insert held by a step provided on the inner peripheral surface of the nozzle pack body, A male screw is formed on a peripheral surface of a lower end portion of the nozzle pack main body, and has a female screw to be screwed with the male screw of the nozzle pack main body and engages with the support block. Ring can be achieved by melt spinning a spinning pack apparatus of a thermoplastic synthetic fiber characterized that screwed to the lower end of the nozzle pack body.

According to the present invention having the above-described structure, the nozzle pack is assembled in advance, a ring is screwed into the nozzle pack, transported below the spin block, and the nozzle pack is inserted into the nozzle pack receiving recess using a jig or the like. Then, the pack can be exchanged alone by engaging the ring with the support block.

[0014]

DESCRIPTION OF THE PREFERRED EMBODIMENTS In the present invention, a support block is composed of two support block pieces, each of which has an approximately 1/4 arc shape and has a shoulder at a lower end.
It is preferable that the support block pieces are arranged to face each other so as to form a gap between the support block pieces.

Further, in the present invention, the ring partially has a flange portion having a large outer diameter and a small diameter portion, and the circumferential length of the large diameter flange portion is defined by the distance between the two support block pieces. Preferably, the gap is smaller than the gap, and the ring flange is inserted through the gap to twist the ring so that the ring can be attached to the support block with one touch.

By making the outer diameter of the lower end of the nozzle pack body of the present invention where the male screw is formed smaller than the outer diameter of the middle part, the ring can be easily attached to the nozzle pack body, and the ring can be easily removed. In this case, the external thread of the nozzle pack is smaller in diameter than the intermediate portion of the nozzle pack body, so that it is preferable that the external thread is not easily damaged.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings illustrating embodiments of the present invention. FIG. 1 is a cross-sectional view of an embodiment of the present invention, and FIG.
(B) is a BB arrow view of FIG. 1.

The spin block 11 is formed with a recess 11a for accommodating a nozzle pack, and the recess 11a is accommodated in the recess 11a.
Is open. A wear plate 12 is fixed to a ceiling portion of the nozzle pack storage recess 11 a by a mounting bolt 13.

The wear plate 12 has a melt-spinning liquid passage 12b at the center, and has a disk shape as a whole. There are no screws on the outer peripheral surface 12a of the wear plate 12,
As shown in FIG. 2A, two protrusions 12c extending vertically and having a rectangular cross section are provided. The number of the projections 12c may be one or three or more, and the cross-sectional shape may be a triangular cross-section, a trapezoidal cross-section, or the like in addition to a rectangular cross-section as in the embodiment.

The nozzle pack 21 includes a cylindrical nozzle pack body 22 and a spinneret 23, a bridge plate 24, a sand 25, and a top insert 2 housed therein.
6, a seal ring 27 and a lock ring 28.

The nozzle pack body 22 of the nozzle pack 21
The projection 12c of the wear plate 12
Are provided with two grooves 22a having a rectangular cross section for engaging with the nozzle pack body 22 along the wear plate 12.
Can be moved up and down, and the rotation of the nozzle pack 21 is prevented by the connection between the groove 22a and the projection 12c. The groove 22a
The number may be one or three or more according to the protrusion 12c, and the cross-sectional shape may be a triangular cross section, a trapezoidal cross section, or the like according to the protrusion 12c. A female screw 22b is formed on the inner wall surface of the cylinder below the groove 22a in the upper part of the nozzle pack body 22, and the female screw 22b is screwed with a male screw 28a of a lock ring 28 described later.

The top insert 26 has a shape in which an upper portion 26a has a cylindrical shape, and a frustoconical cone 26b which is expanded downward is connected below the upper portion 26a. Cylindrical part 26 of top insert 26
The outer diameter of “a” is smaller than the inner diameter of an opening 28 b of the lock ring 28 described later, and can be fitted into the opening 28 b of the lock ring 28. At the center of the top insert 26, there is provided a vertically extending molten spinning solution passage 26c. When assembled, the molten spinning solution passage 26c of the top insert 26 is formed in the wear plate 12 via an inlet gasket 29. Can be connected to the melt spinning liquid passage 12b.

The lock ring 28 is in the shape of a donut-shaped tube having an opening 28b at the center, and has a male screw 28a which is screwed to a female screw 22b formed in the nozzle pack body 22 on the outer peripheral surface thereof. Nozzle pack body 22
Can be screwed with the female screw 22b. The lower surface of the lock ring 28 is a conical concave surface 28c corresponding to the conical surface 26b of the top insert 26.

The seal ring 27 has a donut shape with a round cross section, and is inserted from above the top insert 26.
The lock ring 28 is fixed by screwing it into a male screw 28 a on the upper part of the nozzle pack body 22.

The outer diameter of the lower end portion 22d of the nozzle pack body 22 is smaller than the outer diameter 22c of the intermediate portion, and a male screw 22e is formed on the outer surface of the reduced diameter lower end portion.

A female screw 31a screwed into the male screw 22e
A ring 31 having a pair of screws 22e, 31a
The ring 31 can be attached to the nozzle pack body 22 by screwing. By rotating the ring 31 around the nozzle pack main body 22, the height of the ring 31 protruding from the lower end of the nozzle pack main body 22 can be adjusted.

As shown in FIG. 2B, the ring 31 screwed to the lower end of the nozzle pack body 22 has a flange portion 31b having a large outer diameter and a small portion 31c having a small outer diameter. The circumferential length of the flange portion 31b having a diameter is smaller than a gap between the support block pieces 32 described later, and the flange portion 31b can be inserted through the gap.

A support block 33 made up of two support block pieces 32 is fixed to the outer periphery of the lower end portion of the recess 11a for accommodating the nozzle pack 21 of the spin block 11 by mounting bolts 34. Each support block piece 32 has a shoulder 32a at the lower end as shown in FIG. 1 and has a substantially quarter-arc shape as shown in FIG. 2B. The two support block pieces 32 are fixed by mounting bolts 34 so as to face each other and form a gap between the two support block pieces 32. Once the support block 33 is attached,
Do not remove during normal pack replacement.

In the spinning pack apparatus for melt-spinning thermoplastic synthetic fibers of the present invention having the above configuration, the nozzle pack 2 is previously set at a place away from the spin block 11.
Assemble 1. That is, the spinneret 23, the bridge plate 24, the sand 25, the top insert 26, and the seal ring 27 are attached to the nozzle pack body 22, and the external threads 28a of the lock ring 28 are attached to the nozzle pack body 22.
And assembled with the female screw 22b.

The assembled nozzle pack 21 is transported below a predetermined nozzle pack storage recess 11a of the spin block 11 to be mounted.

The nozzle pack 21 thus assembled
Before or after transportation under the nozzle pack storage recess 11 a of the spin block 11, the ring 31 is first attached to the male screw 22 e at the lower end of the nozzle pack main body 22 before being attached to the nozzle pack storage recess 11 a. Screw and install.

With the ring 31 attached, the nozzle pack 21 is rotated by an appropriate lifting jig into the spin block 1.
The groove 22a provided on the upper part of the nozzle pack main body 22 and the wear plate 12
Of the nozzle pack 2 so that the projections 12c of
Lift one. At that time, the circumferential phase of the ring 31 is adjusted so that the flange portion 31b of the ring 31 passes through the gap between the support block pieces 32. Note that the nozzle pack main body 22 is formed so that the groove 22a of the nozzle pack main body 22 and the protrusion 12c of the wear plate 12 are easily engaged with each other.
The upper side of the groove 22a is expanded, and the wear plate 1
It is preferable to reduce the width of the lower end side of the second protrusion 12c.

After fitting the projection 12c of the wear plate 12 with the groove 22a of the nozzle pack body 22, the ring 3
The ring 31 is rotated so that one flange portion 31b rests on a shoulder 32a provided at the lower end of the support block piece 32. At this time, since the protrusion of the wear plate 12 and the groove 22a of the nozzle pack body 22 are fitted, the nozzle pack 21 does not rotate.

The nozzle pack 21 thus assembled can be mounted in the nozzle pack 21 accommodating recess 11a of the spin block 11, and the spin block 1
The top insert 26 and the wear plate 12 are self-sealed by the melt pressure supplied through the melt spinning solution passage 11b of the wear plate 1 and the wear plate 12.

[0035]

According to the present invention, the nozzle pack can be lifted and screwed into the nozzle pack storage recess of the spin block, and the pack can be replaced alone.

According to the present invention, furthermore, the nozzle pack does not rotate around the spinning axis at the time of installation, the position of the yarn spun from the melt spinning apparatus around the spinning axis is determined, and the cooling air of the spinning cylinder is cooled. The blowing direction can be optimized for the yarn,
The cooling effect of the cooling air is enhanced, and the yarn quality of the obtained yarn is enhanced.

In the present invention, the nozzle pack does not rotate around the spinning axis at the time of mounting, and the seal member between the top insert and the wear plate is not easily damaged.

Further, according to the present invention, a portion protruding outward from the nozzle pack main body at the time of cleaning, preheating or transportation can be eliminated, so that the nozzle pack main body is hardly damaged during cleaning, preheating or transportation.

[Brief description of the drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a plan view of the apparatus shown in FIG. 1; FIG.
FIG. 2B is a view along arrow AA, and FIG. 2B is a view along arrow BB in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Spin block 11a Nozzle pack accommodating recessed part 11b Melt spinning liquid passage 12 Wear plate 12a Outer peripheral surface 12b Melt spinning liquid passage 12c Projection 13 Mounting bolt 21 Nozzle pack 22 Nozzle pack main body 22a Groove 22b Female screw 22c Intermediate part 22d Lower end 22e Male screw 23 Spinneret 23 24 Bridge plate 25 Sand 26 Top insert 26a Upper part 26b Truncated cone 26c Path for molten spinning liquid 27 Seal ring 28 Lock ring 28a Male screw 28b Opening 29 Inlet gasket 31 Ring 31a Female screw 31b Flange portion 31c Small diameter portion 32 Support block piece 32a shoulder 33 support block 34 mounting bolt

Claims (6)

[Claims] 1. A nozzle pack storage recess is formed in a spin block, a molten spinning solution passage is opened in the nozzle pack storage recess, and a cylindrical nozzle pack is attached to the nozzle pack storage recess of the spin block. In the spinning pack apparatus for melt-spinning thermoplastic synthetic fibers, a support block is attached around an inlet of a nozzle pack accommodating recess of the spin block, and an engaging projection extending in an axial direction is formed on an outer peripheral surface. The wear plate is attached to the ceiling of the nozzle pack storage recess, and a cylindrical inner wall surface and an inner wall provided with an engagement groove on the upper part of the nozzle pack body that engages with an engagement protrusion of the wear plate. A female screw wall surface having a female screw is formed at a lower portion of the wall surface, and a male screw formed on an outer peripheral surface of the lock ring is screwed into the female screw to form a nozzle. A top insert housed inside the main body of the nozzle pack is fixed, and a male screw is formed on a peripheral surface of a lower end portion of the nozzle pack main body. A spinning pack device for melt-spinning thermoplastic synthetic fibers, wherein a ring that engages with the thread is screwed into a lower end portion of the nozzle pack body. 2. The support block is formed by two support block pieces each having a shoulder at a lower end portion and opposed to each other so as to form a gap therebetween, and each having a substantially quarter-arc shape. The spinning pack apparatus for melt-spinning thermoplastic synthetic fibers according to claim 1, characterized in that: 3. The ring partially has a flange portion having a large outer diameter and a small diameter portion, and a circumferential length of the large diameter flange portion is smaller than a gap between the support block pieces. The flange portion can be inserted from the gap.
6. A spinning pack apparatus for melt-spinning thermoplastic synthetic fibers according to item 5. 4. The thermoplastic synthetic fiber according to claim 1, wherein the outer diameter of the lower end of the nozzle pack body where the male screw is formed is smaller than the outer diameter of the middle part. Spinning pack equipment for melt spinning. 5. Due to the engagement between the engagement projections of the wear plate and the engagement grooves of the nozzle pack body, the nozzle pack rises in the axial direction without rotating just by rotating the ring, and the gap between the top insert and the wear plate is increased. The spinning pack apparatus for melt-spinning thermoplastic synthetic fibers according to claim 1, wherein an initial seal is performed. 6. An inlet gasket is mounted on the top insert, and the gap between the top insert and the wear plate is self-sealed by a melt pressure supplied from the spin block through a melt spinning solution passage. The spinning pack apparatus for melt-spinning thermoplastic synthetic fibers according to claim 1, 2, 3, 4, or 5.