JP3435816B2 - Tow crimping equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for crimping a spun linear tow (fiber aggregate). In addition, in the present specification, left and right are the left of FIG.
The right is called left and right respectively.

[0002]

2. Description of the Related Art Conventionally, in order to obtain a crimped tow, a spun linear tow is stretched, and this stretched tow is introduced into a crimping device to be crimped. As a crimping device for this purpose, the tow to be crimped is sandwiched between a pair of rollers which have rotating shafts parallel to each other and whose peripheral surfaces are in pressure contact with each other and which rotate at an equal peripheral speed, and are placed at a rear position in the rotational direction of the rollers. A roller type crimping device configured to feed a tow into a formed stuffing box is known. However, with this type of device, the tow crimping speed was low, and it was not possible to continuously crimp the tow spun in the medium speed spinning region (1000 to 1500 m / min) or higher.

In order to solve the above-mentioned drawbacks of the conventional device, for example, Japanese Patent Application Laid-Open No. 1-215540 discloses a tow crimping device capable of high-speed processing. This type of crimping device
Explaining with reference to FIG. 8, a ring roller (101) having a large diameter that rotates in one direction is provided so as to be inscribed in the ring roller (101), and crimps are provided between the ring roller (101). While holding the tow (T) to be
Inscribed roller (10
2) and a pair of left and right side rings (103) (104) located on both left and right sides of the contact position of these two rollers (101) (102) and rotating at the same peripheral speed in the same direction as the rollers (these (Not shown in detail) and a pair of left and right crimp resistors (105) (106) provided so as to face each other behind the roller in the rotational direction of the roller rather than the contact position of the roller. It has been formed.
The ring roller (101) is attached to a cantilevered rotation drive shaft (not shown), and the inscribed roller (102)
Is a swinging arm (1
It is attached to a rotary drive shaft (111) provided at the other end of the rotary drive shaft and parallel to the rotary drive shaft. In addition, the pair of crimp resistors (105) (106), along the tow passage direction,
It is elastically movable. In such a crimping device, the tow (T) to be crimped is transferred to the ring roller (10
While sandwiched between 1) and the inscribed roller (102), it is moved by the rotation of the roller and fed into the stuffing box formed at the rear side to provide crimping. With this crimping device, the toe (T) is fed into the stuffing box in an orderly manner, so the toe crimping is performed at high speed (1000 to 6000 m / min).
) Is suitable for doing.

[0004]

However, according to this crimping device, the tow speed is higher than that of the roller crimping device, so that the retention time of the tow in the stuffing box is shortened. . Therefore, in the tow crimped by this crimping device, a crimp skip (a state in which a portion having a very small crimp degree in the width direction and the length direction of the tow is generated) is generated, and an ear portion (toe (Width direction end)
There was a quality defect that the crimping was poor and the degree of crimping (number of crimps, crimp strength, etc.) was small.

The object of the present invention is to solve the above-mentioned drawbacks of the prior art and to sufficiently control the temperature of the tow in the stuffing box to obtain crimped tow of high quality while crimping at high speed. The object is to provide a crimping device for a tow. Another object of the present invention is to provide a crimping device for a tow, which can obtain a crimped tow of higher quality by heating the tow in advance before crimping the tow. . Further, the object of the present invention is to
Before heating the tow prior to crimping, a tow preheating device that can uniformly blow heated steam to all the single yarns forming the tow without affecting the running state of the tow is provided. To provide a crimping device.

[0006]

A tow crimping device of the present invention is provided with a large-diameter ring roller that rotates in one direction and is provided so as to be inscribed in the ring roller, and is crimped between the ring roller and the ring roller. An inscribed roller that rotates in the same direction as the ring roller at the same peripheral speed while sandwiching the tow to be compressed,
A pair of left and right side rings located on both left and right sides of the contact position of these two rollers and rotating in the same direction as the roller at the same peripheral speed, and facing each other behind the contact position of the rollers in the rotation direction of the roller. In a crimping device for a tow in which a stuffing box is formed by a pair of right and left crimping resistors provided so as to match with each other, at least one of the pair of crimping resistors is a steam for injecting steam to a front part of the stuffing box. An injection hole is provided, and at least one of the pair of crimp resistors is provided with a water injection hole for injecting cooling water at the rear part of the stuffing box.

In the present invention, it is preferable that the pair of crimp resistors are provided so as to be elastically movable along the tow passage direction.

Further, in the present invention, it is preferable that a tow preheating device for heating the tow to be crimped before introducing the stuffing box is provided upstream of the stuffing box in the tow moving direction.

Further, in the present invention, it is preferable that the tow preheating device injects steam to the moving tow through slit-shaped steam injection holes provided on the upper and lower sides of the tow moving passage, respectively. It is further preferable that the steam injection holes are provided at different positions in the tow moving direction and inject the steam to different positions of the moving tows.

[0010]

According to the toe crimping device of the present invention, at least one of the pair of crimp resistors is provided with a steam injection hole for injecting steam to the front portion of the stuffing box, and the pair of crimp resistors are provided. At least one side of the stuffing box has a water injection hole in the latter part of the stuffing box, so the tow that was sent into the stuffing box while being sandwiched between the ring roller and the inscribed roller is the front part of the stuffing box. By injecting steam in (1), the expression of crimp is enhanced, and by injecting cooling water into the tow immediately after steam injection in the latter part of the stuffing box, a tow having high crimp fastness can be obtained.

According to the preferred tow crimping device of the present invention in which the toe preheating device is provided upstream of the stuffing box in the tow moving direction, the tow to be crimped is preheated before the stuffing box is introduced. By setting it, the movement of the molecular chain of the yarn is facilitated, the expression of crimp is further enhanced, and a crimp tow of higher quality can be obtained.

Further, when the tow preheating device is one for injecting steam to the moving tow from the slit-shaped steam injection holes provided on the upper and lower sides of the tow moving passage, all of the tows are formed. Since the heated steam can be uniformly sprayed onto the single yarn of No. 3, the effect of the tow preheating is further enhanced. Furthermore, according to the most preferable tow crimping device of the present invention, the steam injection holes are provided at different positions in the tow moving direction, and the steam is injected to different positions of the moving tows. Since the heated steam can be uniformly sprayed onto all the single yarns forming the tow without affecting the running state, it contributes to high-speed productivity and further enhances the effect of the toe preheating.

[0013]

Embodiments of the present invention will now be described with reference to the drawings. [Embodiment 1] FIGS. 1 to 4 show a crimping device of the present invention.
FIG. 2 is a side view of the crimping device of the present invention, and FIG.
FIG. 3 is a sectional view taken along line II-II, and FIG.
FIG. 3 is a view taken along the line III, and FIG. 4 is a cross-sectional view showing details of a pressure contact portion between the ring roller (1) and the inscribed roller (2).

The crimping device of the present invention comprises a large diameter ring roller (1), an inscribed roller (2), a pair of left and right side rings (3) and (4), and a pair of left and right crimp resistors ( 5) and (6) form a stuffing box (S).

A large diameter ring roller (1) (inner diameter: 700 mm, roller width: 15 mm, for example) and a right side ring slightly smaller than the ring roller (1).
(3) is integrally formed on the peripheral edge of the hub (10) with a substantially L-shaped cross section. In this way, the ring roller (1) and the side ring (3) may be integrally formed, or
They may be separate bodies that are integrated together. Hub (1
The center of (0) is attached to the rotary drive shaft (11), and the ring roller (1) and the side ring (3) are rotated at a desired peripheral speed by a drive system (not shown).

The inscribed roller (2) has a disk shape (outer diameter: eg 330 mm, roller width: eg 15 mm), is integrated with the left side ring (4) and is parallel to the rotary drive shaft (11). Attached to the rotary drive shaft (12).
Although the drive system of the rotary drive shaft (12) is not shown, the coaxial shaft (12) is supported by one end of the swing arm (13), and the swing arm (13) is a support shaft provided at the other end. The (14) is loosely fitted in the swing arm support hole (15) provided on the machine base so that it can swing about the support shaft (14) as a fulcrum. In this way, the inner roller (2) and the side ring (4) are rotated at a desired peripheral speed equivalent to that of the ring roller (1), and the outer peripheral surface of the inner roller (2) and the ring roller (1) are rotated. It is designed to make pressure contact with the inner peripheral surface of the.

The crimp resistor (6) on the right side is a substantially triangular plate-like body so as to form the right side surface of the stuffing box (S), and the upper part of the resistor (6) (the front part of the stuffing box). ) Is provided with a slit-shaped steam injection hole (7) (slit size 1 mm × 15 mm is preferable), and a plurality of circular water injection holes (8) are provided in the lower part of the same resistor (6) (the rear part of the stuffing box). ) (Hole diameter 1mm, hole pitch 3m
m, and the number of holes is preferably about 20). The resistor (6) has a steam conduit for supplying steam and water to the steam injection hole (7) and the water injection hole (8), respectively.
(7a) and water conduit (8a) are arranged. Also, crimp resistor
(6) is attached to the swing arm (1) via a bracket (6a) which is placed through a gap between the inscribed roller (2) and the ring roller (1).
It is attached to 3). That is, the crimp resistor (6) is designed to interlock with the swing arm (13).

On the other hand, the crimp resistor (5) on the left side has a shape that forms a pair with the crimp resistor (6) on the right side so as to form the left side surface of the stuffing box (S). It is provided so as to face the resistor (6). That is, the resistor support shaft (5a) is attached to the upper part of the crimp resistor (5), and the coaxial (5
a) is loosely fitted in the support hole of the bracket (5b) fixed to the swing arm (13). And, in the lower part of the crimp resistor (5),
A rocking rod (5c) that is movable in the left-right direction and is connected to an air cylinder (not shown) is provided. In this way, the crimp resistor (5) is adapted to interlock with the swing arm (13), and is capable of swinging about the support shaft (5a) as a fulcrum.

Next, tow crimping in the crimping device having the above construction will be described. Tow (T) to be crimped by spinning and drawing
Ring rollers that rotate in the same direction at the same circumferential speed
It is introduced between (1) and the inscribed roller (2), sandwiched between these rollers (1) and (2) to form a flat shape, and fed into the stuffing box (S). The ring roller (1) and the inscribed roller (2) rotate in the same direction at the same peripheral speed, and the side rings (3) (4) on the left and right sides of the roller contact position also rotate in the same direction at the same peripheral speed. Therefore, when the flat tow (T) sandwiched between the rollers (1) and (2) leaves the contact position with the roller, both front and back surfaces are guided by the rollers along the same direction. T) can be sent to the stuffing box (S) in an orderly manner. Also, in the stuffing box (S), the stuffing box
Since both the ring roller (1) and the inscribed roller (2) forming a pair of surfaces of (S) move in the traveling direction of the tow (T),
It is suitable for high-speed crimping because the damage to the fiber due to friction is small. In the stuffing box (S),
By the action of the pair of left and right crimp resistors (5) (6), the toe (T)
Apply crimp to. That is, the crimp resistor (5) on the left side is provided so as to swing around the support shaft (5a) as a fulcrum, and is pushed to the right side by the air cylinder via the swing rod (5c), and the crimp resistor on the right side is pushed. Prevents movement of crimp tow between body (6).
As a result, the tow density in the stuffing box (S) increases, and when it reaches an arbitrary value, the pressing force of the air cylinder is exceeded, and the crimp resistor (5) swings to the left and the stuffing box (S The tow in (S) is discharged, and the crimp resistor (5) swings to the right again. On the other hand, in the front part of the stuffing box (S), the right side crimp resistor
From the steam injection hole (7) of (6), from the steam heating device to the steam conduit
The superheated steam supplied through (7a) is injected and blown onto the tow (T). The superheated steam heats the tow (T), which facilitates the movement of the molecular chains of the yarn and facilitates crimping. Further, in the rear part of the stuffing box (S), the water conduit (8a ) To inject the cooling water supplied. With this cooling water, the tow (T) is cooled below the glass transition point, the crystal structure of the yarn is fixed, and the crimp fastness is maintained. The tows (T) crimped in the stuffing box (S) are sequentially discharged.

As described above, according to the present crimping device, not only the high-speed crimping process can be performed, but also the stuffing box
By positively controlling the temperature of the toe (T) in (S),
It is possible to enhance the development and growth of tow crimps and maintain higher crimp fastness.

<Specific Operation Example> Further, a specific operation example using the crimping device having the above-mentioned configuration will be described. The tow used is 12
Polyethylene terephthalate filament spun at 00 m / min was bundled into a tow of 60,000 denier and
It has been stretched twice. The tow is sandwiched between rollers (1) and (2) at a pushing speed of 3600 m / min, and steam pressure from the steam injection hole (7) is 2 kg in the stuffing box (S).
/ Cm ² G, steam temperature: 500 ° C, steam discharge rate: 10 kg /
Steam is injected with Hr, and the water temperature is 30 from the water injection hole (8).
Chilling, water discharge amount: 100 l / Hr, cooling water was injected to crimp the tow, and then the crimp tow was received on the conveyor. The crimped yarn thus obtained had a zigzag mechanical crimp that gave good spinnability, and the crimp fastness was also excellent as shown in Table 1.

For comparison, a crimping treatment was carried out by sandwiching the same tow of this embodiment between rollers (101) and (102) at the same pushing speed of 3600 m / min by the conventional crimping device shown in FIG. Table 1 also shows the crimped tow thus obtained. When high-speed processing is performed by the conventional crimping device of FIG. 8 in this way, the crimped tow has crimp skips, the crimping of the ears is poor, and the crimping degree (crimping number) is Also, there was a problem in quality that the crimp strength was small.

[Embodiment 2] FIGS. 5 and 6 show a preferred example of the crimping device of the present invention, FIG. 5 is a side view of the crimping device of the present invention, and FIG. 6 shows preheating in FIG. It is a figure which shows the detail of an apparatus (9).

In the crimping device of this embodiment, the toe preheating device (9) for heating the tow to be crimped before introducing the stuffing box (S) is the stuffing box in the tow moving direction.
It is the same as in Example 1 except that it is provided upstream of (S). That is, a large diameter ring roller
(1), inscribed roller (2), and a pair of left and right side rings
A stuffing box (S) is formed by (3) and (4) and a pair of left and right crimp resistors (5) and (6), and a steam injection hole (7) is formed in the right crimp resistor (6). Since the water injection hole (8) and the like are the same, description thereof will be omitted.

As shown in FIG. 6A, a tow preheating device
(9) is composed of a heating part (9a) and heat insulating cylinders (9b) and (9c) respectively located on the upstream side and the downstream side of the heating part (9a) in the tow moving direction. FIG. 6 (B) is an enlarged view of the heating part (9a), in which slit-shaped steam injection holes (31) (32) (slit dimension ^w 50m) are provided on the upper and lower sides of the tow moving passage (30), respectively.
m × ^t 3 mm is preferable), and the superheated steam is injected to the moving tow.

Next, the tow crimp in the crimping device having the above-mentioned structure will be described. Tow (T) to be crimped by spinning and drawing
Is first introduced into the tow preheater (9). Superheated steam is sprayed from the steam injection holes (31) (32) on the upper and lower sides to the tow (T) moving in the tow moving passage (30) of the heating section (9a). Further, at this time, the steam blown to the tow (T) is superheated steam supplied from a steam heating device so as not to give excess water to the tow. The superheated steam is uniformly blown to all the single yarns that make up the tow, and the tow (T) is sufficiently heated, and the movement of the molecular chains of the yarn becomes easy. As a result, the development and growth of tow crimps in the downstream crimping device are enhanced. In this way, the preheated tow (T) was introduced between the ring roller (1) and the inscribed roller (2) in the same manner as in Example 1,
It is sandwiched between these rollers (1) and (2), made flat, and sent to the stuffing box (S) to be crimped.

<Specific Operation Example> Further, a specific operation example using the crimping device having the above-mentioned configuration will be described. The tow used is the same as in Example 1. This tow is a tow preheater
Introduced into (9), the superheated steam is blown to the tow from the upper and lower steam injection holes (31) and (32) at a steam temperature of 500 ° C and each steam discharge rate: 100 Kg / Hr, and the tow temperature is set to 120 ° C. As in Example 1, heated tow at 3600 m / mi
It is sandwiched between rollers (1) and (2) at a pushing speed of n, and in the stuffing box (S), steam pressure: 2 kg / cm ² G, steam temperature: 500 ° C, steam discharge amount from the steam injection hole (7):
Steam injection is performed at 10 Kg / Hr, cooling water is injected from the water injection hole (8) at a water temperature of 30 ° C. and a water discharge rate of 100 l / Hr, crimps the tow, and then crimps the tow. Received on the conveyor. The crimped yarn thus obtained had a zigzag mechanical crimp that gave good spinnability, and the crimp fastness was also excellent as shown in Table 1.

[Embodiment 3] FIGS. 5 and 7 show the most preferable example of the crimping device of the present invention, FIG. 5 is a side view of the crimping device of the present invention, and FIG. FIG. 3 is a diagram showing details of a preheating device (9).

The crimping device of this embodiment is a tow preheating device.
It is the same as that of the second embodiment except that (9) is different from the tow preheating device in the crimping device of the second embodiment.

As shown in FIG. 7A, a tow preheating device
(9) is composed of a heating part (9a) and heat insulating cylinders (9b) and (9c) respectively located on the upstream side and the downstream side of the heating part (9a) in the tow moving direction. FIG. 7 (B) is an enlarged view of the heating part (9a), in which the steam injection hole (31) having a slit shape (slit size ^w 50 mm × ^t 3 mm is preferable) is provided above the tow moving passage (30). The angle θA formed by the injection direction and the tow advancing direction is set to about 150 °. In addition, a slit-shaped steam injection hole (3
2) (Slit size ^w 50 mm x ^t 3 mm is preferable) is provided so that the angle θB formed by the steam injection direction and the tow advancing direction is about 30 ° so that the steam is injected to different positions of the moving tow. Has been done. Angle θA ＞
90 °, angle θB <90 °, θA + θB = 1
It is preferably 80 °. Also, both injection holes (31) (32)
The distance (L) in the tow traveling direction between them is preferably about 15 mm.

Next, tow crimping in the crimping device having the above-mentioned structure will be described. Tow (T) to be crimped by spinning and drawing
Is first introduced into the tow preheater (9). Superheated steam is sprayed from the steam injection holes (31) (32) on the upper and lower sides to the tow (T) moving in the tow moving passage (30) of the heating section (9a). Further, at this time, the steam blown to the tow (T) is superheated steam supplied from a steam heating device so as not to give excess water to the tow. Since steam is injected to different positions of the moving tow, superheated steam can be uniformly sprayed on all the single yarns that make up the tow without any crossing of steam and affecting the running state of the tow. . As a result, while contributing to high-speed productivity, the tow (T) is sufficiently heated,
The movement of the molecular chains of the yarn is facilitated, and the development and growth of tow crimps in the downstream crimping device are enhanced. In this way, the preheated tow (T) was introduced between the ring roller (1) and the inscribed roller (2) in the same manner as in Example 1, and the space between these rollers (1) and (2) was introduced. Sandwich it into a flat shape and send it to the stuffing box (S) to apply crimps.

<Specific Operation Example> Further, a specific operation example using the crimping device having the above-mentioned configuration will be described. The tow used is the same as in Example 1. This tow is a tow preheater
Introduced into (9), the superheated steam is blown to the tow from the upper and lower steam injection holes (31) and (32) at a steam temperature of 500 ° C and each steam discharge rate: 100 Kg / Hr, and the tow temperature is set to 120 ° C. As in Example 1, heated tow at 3600 m / mi
It is sandwiched between rollers (1) and (2) at a pushing speed of n, and in the stuffing box (S), steam pressure: 2 kg / cm ² G, steam temperature: 500 ° C, steam discharge amount from the steam injection hole (7):
Steam injection is performed at 10 Kg / Hr, cooling water is injected from the water injection hole (8) at a water temperature of 30 ° C. and a water discharge rate of 100 l / Hr, crimps the tow, and then crimps the tow. Received on the conveyor. The crimped yarn thus obtained had a zigzag mechanical crimp that gave good spinnability, and the crimp fastness was also excellent as shown in Table 1.

[0033]

[Table 1]

[0034]

The tow crimping device of the present invention is configured as described above, and since the temperature of the tow is controlled in the stuffing box, the expression of crimps is enhanced and the crimp strength is high. A tow having the property is obtained. As a result, the crimping device of the present invention is not only capable of crimping tow at a high speed, but also the quality of the tow obtained is very excellent.

Further, according to the preferred tow crimping device of the present invention in which the tow preheating device is provided upstream of the stuffing box in the tow moving direction, the occurrence of crimps is further enhanced, and the crimped tow of higher quality is obtained. Can be obtained.

Further, according to the most preferred tow crimping device of the present invention, in which the tow preheating device injects steam to different positions of the moving tow, there is no influence on the running condition of the tow. Since the tow can be preheated by uniformly blowing the heated steam to all the single yarns constituting the tow, it is possible to obtain a crimped tow with very high productivity and high quality.

As described above, according to the tow crimping device of the present invention, the tow spun in the medium speed spinning region (300 to 1500 m / min) or more can be continuously processed until stretching and crimping. , The quality of the tow obtained is also very good.

[Brief description of drawings]

FIG. 1 is a schematic side view of a crimping device of the present invention.

FIG. 2 is a sectional view taken along the line II-II in FIG.

FIG. 3 is a view taken along the line III-III in FIG.

FIG. 4 is a cross-sectional view showing details of a pressure contact portion between the ring roller (1) and the inscribed roller (2).

FIG. 5 is a schematic side view of a preferred crimping device of the present invention.

FIG. 6 is a diagram showing details of a tow preheating device.

FIG. 7 is a diagram showing details of a tow preheating device.

FIG. 8 is a schematic side view of a conventional crimping device.

[Explanation of symbols]

Ring roller ... (1) Inscribed roller ... (2) Side ring ... (3) (4) Crimping resistor ... (5) Resistor support shaft (5a) Bracket ... (5b) Swing bar ... (5c) Crimp resistor ... (6) Bracket ... (6a) Steam injection hole ... (7) Water injection hole ... (8) Toe preheating device (9) Hub ... (10) Rotation drive shaft ... (11) (12) Swing arm ... (13) Support shaft ... (14) Swing arm support hole (15) Tow moving passage ... (30) Steam injection hole ... (31) (32) Stuffing box ... (S) Toe ... (T)

─────────────────────────────────────────────────── ─── Continuation of front page (56) Reference JP-A-1-201540 (JP, A) JP-A-63-50538 (JP, A) JP-A-6-184850 (JP, A) JP-A 61- 113843 (JP, A) JP-A-50-39740 (JP, A) Jikkoku Sho-46-33747 (JP, Y1) (58) Fields investigated (Int.Cl. ⁷ , DB name) D02G 1/12 D02G 1 / 16

Claims (5)

(57) [Claims] 1. A large diameter ring roller which rotates in one direction.
(1) is provided so as to be inscribed in the ring roller (1), and the tow to be crimped is sandwiched between the ring roller (1) and the ring roller (1) in the same direction as the ring roller (1). Inscribed roller (2) rotating at peripheral speed and these two rollers
(1) A pair of left and right side rings located on the left and right sides of the contact position of (2) and rotating in the same direction as the roller at the same peripheral speed.
(3) (4) and a pair of left and right crimp resistors (5) (6) provided so as to face each other behind the roller in the rotational direction of the roller rather than the contact position of the roller.
In the tow crimping device in which (S) is formed, at least one of the pair of crimping resistors (5) and (6) is provided with a steam injection hole (7) for injecting steam to the front part of the stuffing box (S). Is provided, and at least one of the pair of crimp resistors (5) (6) is provided with a water injection hole (8) for injecting cooling water to the rear part of the stuffing box (S). The tow crimping device. 2. The tow according to claim 1, wherein the pair of crimp resistors (5) (6) are elastically movable along a tow passage direction. Crimping device. 3. A tow preheating device (9) for heating the tow to be crimped before introducing the stuffing box, is provided upstream of the stuffing box (S) in the tow moving direction. Item 3. The tow crimping device according to item 1 or 2. 4. The tow preheating device (9) is a tow moving passage.
The tow winding device according to claim 3, wherein steam is injected into the moving tow through slit-shaped steam injection holes (31) (32) provided on both upper and lower sides of the (30). Compression device. 5. The steam injection holes (31) (32) are provided at different positions in the tow moving direction, and spray the steam to different positions of the moving tow.
The tow crimping device according to claim 4.