JP3128991B2 - Yarn crimping machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a device for crimping a yarn with a heated compressive fluid, and more particularly, to assembling and disassembling a crimping device, and a method for crimping a yarn to a crimping device. The present invention relates to a yarn crimping device capable of performing a hanging operation quickly and reliably and obtaining a crimped yarn of stable quality.

[0002]

2. Description of the Related Art Conventionally, a heated compressible fluid (hereinafter, abbreviated as a heating fluid) such as water vapor or heated air is jetted onto a yarn to push the yarn together with the heating fluid into a stuffer portion. 2. Description of the Related Art An apparatus for crimping a yarn to be crimped is known.

[0003] The general basic structure of these conventional devices is as follows: a nozzle portion for injecting a heating fluid to the yarn to impart propulsive force and plasticity to the yarn; and a heating fluid to the yarn injected by the nozzle portion. And a stuffer section for imparting buckling and crimping to the yarn by rapidly decelerating the yarn speed by separating and discharging the heating fluid from the yarn. And a deposition adjusting section for compressively depositing the buckled and crimped threads one after another as a plug-shaped thread lump.

[0004] The conventional apparatus is usually used for threading inside the apparatus at the start of crimping and for removing foreign matters such as solids of heating fluid and dust accumulated in the apparatus. The structure can be divided into two along the yarn path axis direction.

As a conventional yarn crimping apparatus in which the entire apparatus has a two-part structure, for example, Japanese Patent Publication No.
Apparatuses disclosed in Japanese Patent Application Laid-Open Nos. 19215, 54-2450, 55-58682, and the like are known.

In each of these devices, the divided nozzle divided surfaces are combined with each other, and one of the nozzles is elastically supported by an elastic body such as a coil spring, for example, so as to cover the entire other divided surface. By pressing uniformly, the entire divided surface is tightly sealed to prevent leakage of the heating fluid.

[0007]

However, in the above-mentioned conventional apparatus, a slit, which is an exhaust hole for discharging a heating fluid, is provided in the deposition adjusting section. It is necessary to manufacture and assemble the parts separately. For this reason, on the divided surface of the nozzle,
Inevitably, there is a step between the connection between the fluid ejection nozzle portion and the stuffer portion, and there is a problem that the divided surfaces cannot be adhered to each other without a gap, and a sufficient sealing of the heated fluid cannot be performed. If there is any part that cannot be adhered to the split surface even a little, the yarn will always be caught in that part in the subsequent crimping, and it will not be possible to perform crimping after continuous due to thread clogging etc. in the device. There was a problem.

SUMMARY OF THE INVENTION An object of the present invention has been made in view of the above-mentioned problems of the conventional apparatus, and solves the above-mentioned problems and prevents the leakage of the heating fluid and the yarn even by a simple assembling operation requiring no precision. It is an object of the present invention to provide a crimping device for a yarn which is hardly caught and which can be divided.

[0009]

According to the present invention, there is provided a heating fluid injection nozzle having a yarn path through which a yarn passes, a heating fluid injection nozzle opening to the yarn path, and an injection path for interlacing the yarn. An exhaust unit communicating with the heating fluid injection nozzle unit and exhausting a heating fluid from the entangled yarn; and a stuffer unit having a deposition adjusting unit for buckling and accumulating the yarn, the heating unit comprising: The fluid ejection nozzle portion and the stuffer portion are each separated by two along the axial direction of the yarn path.
In a yarn crimping apparatus having split molds and having detachable means for pressing or releasing the two molds relatively to a split surface side, at least one of the two split molds The gist of the present invention is a yarn crimping apparatus characterized in that the stuffer portion is movably supported by the mold via an elastic member, and the divided surfaces of the stuffer portion are brought into close contact with each other.

Further, according to the present invention, the stuffer portion in the mold is projected to a position where the divided surfaces of the stuffer portions come into close contact with each other before the divided surfaces of the two dies come into close contact with each other during the pressing process by the attaching / detaching means. Is preferred.

Further, in the present invention, it is preferable that the exhaust part and the deposition adjusting part are both integrated or divided.

[0012]

According to the yarn crimping apparatus of the present invention, the pressing process, that is, the dividing surface of the stuffer portion (the exhaust portion and the accumulation adjusting portion) located in one of the two halves (FIGS. 3 and 3) 4 (see S in FIG. 3) so as to be slightly protruded from the dividing surface of the mold (see F in FIGS. 3 and 4) (see L dimension in FIG. 3). It is assembled through a process of supporting with a mold and pressing and fixing both molds of this shape by attaching and detaching means.

When this pressing process is adopted, the two dies approach each other due to the tightening or pressing of the dies by bolts or fluid cylinders as attachment / detachment means, and the division surface (S) of the stuffer part of one of the dies becomes the other stuffer. The two divided surfaces (S) come into close contact with each other in contact with the divided surface (S) of the key portion, and then the divided surfaces (F) of both types come into close contact with each other. That is, even if there is a slight difference in the above-mentioned L dimension between the two dies, due to the action of the elastic member, the two surfaces are kept in close contact with each other on the divided surfaces (S) of the exhaust portion and the deposition adjusting portion. The divided surfaces (F) can be in close contact with each other.

Further, according to the present invention, the elastic member is supported by a bolt provided on a mold, and the elastic member and a stuffer portion fixed to the elastic member are advanced and retracted by rotation of the bolt. The divided surfaces can be brought into close contact with each other by the rotation of.

Therefore, in the apparatus of the present invention, the pressing and fixing of both molds and the pressing and fixing of the stuffer portion in the mold are separated by the elastic member. The surfaces are easily and surely adhered to each other, and no leakage of the heating fluid occurs at the divided surfaces.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a yarn crimping apparatus according to the present invention will be specifically described with reference to the drawings.

FIG. 1 is a schematic longitudinal sectional view of a yarn crimping apparatus 6 according to the present invention, and FIG. 2 is a schematic right side view of the apparatus of FIG. FIG. 3 is a schematic cross-sectional view of the apparatus of FIG. 1 taken along the line XX, and FIG. 4 is a schematic cross-sectional view of the apparatus of FIG.

In the figure, a crimping device 6 of the present invention comprises:
The upper mold A and the lower mold B are divided molds having a two-part structure, and one of the molds is separated from the other mold by the attaching / detaching means 11 with the dividing surface F of both molds A and B as a boundary. It can be attached and detached.

On both sides of the split surfaces F facing each other, means for crimping the yarn Y described below are provided.

Reference numeral 1 denotes a heating fluid jet nozzle for jetting a heating fluid to the yarn Y. The heating fluid jet nozzle is provided to face the yarn path 1a for introducing the yarn Y into the apparatus with the yarn path interposed therebetween. It is composed of a heating fluid supply hole 1b, an injection nozzle 1c, and an injection path 1d.
One of the divisions is formed in a groove shape and communicates with each other. The cross-sectional shapes of the yarn path 1a, the injection nozzle 1c, and the injection path 1d may be rectangular or semicircular. The entrance of the yarn path 1a
The yarn Y is subjected to a curved chamfering process so as to be easily introduced into the crimping device, and is formed in a gentle taper shape in the direction of the junction P of the heating fluid. Further, the axis of each injection nozzle 1c has an inclination angle θ with respect to the axis of the yarn path.

On the other hand, the dividing surface F of the upper die A is a mere plane, and is in close contact with the dividing surface F of the lower die B having the groove-shaped thread path 1a, the injection nozzle 1c, and the injection path 1d. By doing so, each flow path of the yarn path 1a, the supply hole 1b, and the injection path 1d is substantially formed. Split surface F of lower mold B
May be step-shaped, but is preferably planar in view of the configuration of the device. Note that the yarn path 1a and the supply hole 1 having exactly the same phase and the same cross-sectional shape as the lower mold B are also provided on the divided surface F of the upper mold A.
b, the injection path 1d may be formed, and the flow path formed on the divided surface F of the lower mold B may form a complete flow path having a circular cross section or the like.

The injection path 1d is a region for imparting entanglement between a plurality of single yarns constituting the yarn Y by the action of the heating fluid, and has a rectangular or rectangular cross section. Is formed.

Reference numeral 2 denotes a stuffer section for imparting buckling and crimping to the yarn Y by exhausting the heating fluid flowing together with the yarn Y from the nozzle portion 1 to the outside of the apparatus through the exhaust hole 9. A plane passing through the center axis of the yarn path 1a is defined as a division plane F 2
It is composed of a divided movable exhaust part 3A and a fixed exhaust part 3B.

The fixed side exhaust portion 3B fixes a plurality of blades 3a radially arranged in a cross section in a direction perpendicular to the direction of the yarn axis and having a semicircular section, and fixes the semicircular radial blades at upper and lower portions, respectively. Upper flange 3b for use
And a lower flange 3c, which are integrated. The fixed-side exhaust portion 3B is fitted into a concave portion provided in the lower die B such that its divided surface is in close contact with the divided surface F of the upper die A, and is fixed to the lower die B with a bolt (not shown).

The movable side exhaust unit 3A is provided with the fixed side exhaust unit 3A.
3 has the same configuration as that of FIG. 3B, except that the inner wall surface of the concave portion 10 provided in the upper mold A is used as a guide surface as shown in FIG. And is elastically supported. That is, similarly to the fixed-side exhaust portion 3B, the movable-side exhaust portion 3A composed of the blade 3a, the upper portion 3b, and the lower flange 3c is integrally held by the block 7 having the divided surface S with the lower mold B as a whole. In this state, the upper die A is supported by the spring 5. As shown in FIGS. 5 and 6, the spring 5 is provided with slits 5c in a material such as stainless steel or spring steel from alternately opposite directions to secure a large spring constant. The fixing bolt 5a is provided with a female screw 5b for fixing to the upper die A on the other end side, and is fixed to the upper die A by the bolt 8.

Reference numeral 4 denotes a deposition adjusting section for continuously compressing and depositing the yarn buckled and crimped in the exhaust section 3 as a plug-shaped thread lump, which is fixed to the lower die B similarly to the exhaust section. A fixed-side deposition adjusting section 4B and a movable-side deposition adjusting section 4A fixed to the upper die A are provided with semi-cylindrical cavities 4a, 4a on the respective dividing planes F, and both members are separated from each other. The column-shaped accumulation chamber can form the accumulation adjusting section 4 in a state of being closely contacted by S. The movable-side deposition adjusting unit 4A is elastically supported by the upper die A by a leaf spring 6 provided between the upper die A and the movable-side deposition adjusting unit 3A. Here, when the upper mold A is fixedly attached to the lower mold B, the positions of the movable exhaust section 3A of the exhaust section 3 and the movable deposition adjuster 4A of the accumulation adjusting section 4 are all set at the respective split surfaces S. Are set so as to abut each other before the dividing plane F. In this setting method, as shown in FIG. 3, the movable-side exhaust unit 3A and the division surface S of the movable-side deposition adjustment unit 4A slightly protrude from the division surface F (project by the dimension L in FIG. 3). The length can be easily set by adjusting the length of the spring 5 with the bolt 8.

As described above, in this embodiment, the exhaust portion 3 and the accumulation adjusting portion 4 are elastically supported independently of each other, but they may be integrally supported. In addition, as the strength of the elastic support when independently supported, in the exhaust unit 3, since the high-pressure heating fluid flows from the injection nozzle 1c as it is,
A sufficient pressure-resistant seal is required as compared with the accumulation control unit 4,
In addition, since the movement of the yarn Y along the flow and the movement of each single yarn becomes active, it is preferable to prevent the yarn Y from catching on the division surface F as much as possible. On the other hand, in the accumulation control unit 4, since the heating fluid flowing from the injection nozzle is almost exhausted in the exhaust unit 3, the pressure is reduced, and a pressure-resistant seal as strong as the exhaust unit is not required. Also, since the yarn Y is accumulated in the accumulation chamber 4 to form a plug-like yarn lump, there is no situation in which the single yarn is easily caught. Therefore, it is preferable that the exhaust unit 3 and the accumulation adjusting unit 4 be configured separately, and that the exhaust unit 3 be provided with strong elastic support by a strong spring and the accumulation adjusting unit 4 be provided with weak elastic support by a weak spring. When the exhaust section 3 and the accumulation adjusting section 4 are integrated and elastically supported, the area of the dividing surface S becomes large, so that the position of the elastic member is set so that the sealing performance of the exhaust section 3 does not deteriorate. Is preferably closer to the exhaust unit 3 side.

In the above crimping apparatus of the present invention,
The attaching / detaching means is either the upper mold A or the lower mold B,
Alternatively, it refers to a means for pressing both of the molds A and B in the direction of the mating mold to bring the divided surfaces F of the molds into close contact with each other. As a concrete means, the bolt 11 in FIG. , A link mechanism or the like may be used, but it is preferable to use a cylinder / piston unit using pneumatic pressure, hydraulic pressure, water pressure, etc. as a driving source which can provide a strong adhesion between the two types A and B and can be easily attached and detached. preferable.

Further, in this embodiment, the movable exhaust part 3A of the stuffer part 2 and the movable deposition part 4A of the accumulation adjusting part 4 are provided.
The elastic support means uses the special spring 5 shown in FIG. 3 or the leaf spring 6 shown in FIG. 4. However, if a strong contact surface pressure can be obtained on the divided surface F, the link mechanism or the cylinder / piston unit can be used. Of course, it may be used. In short, the movable side exhaust unit 3
It is only necessary that A is elastically supported and adhered to the divided surface of the fixed-side exhaust portion 3B so that the heating fluid does not leak. In this case, the supporting angle of the movable member may be such that it is supported in a direction substantially perpendicular to the dividing plane F. However, even if the movable member has a slight inclination, the function and effect of the present invention are not impaired at all. Instead, those having such a support angle are also included in the present invention.

The yarn Y applicable to the apparatus of the present invention is a polyamide filament, a polyester filament or the like, and the heating fluid is a compressive fluid such as steam or heated air.

As an embodiment shown in FIGS. 1 to 4, a fluid crimping apparatus 6 is provided with a heating fluid jet nozzle 1 and a stuffer 2 on a dividing surface F of an upper die A and a lower die B. A two-thread type, and a yarn path 1a, an injection nozzle 1c,
The inner diameter of the injection path 1d is 1.2 mm, 0.6 mm, and 3 mm, respectively.
0mm and stainless steel (SUS3
04), a fluid crimping apparatus was constructed with a spring constant of 700 kg / mm. Also, the projecting dimension L of the movable-side exhaust portion 3A of the stuffer portion 2 and the movable-side deposition adjusting portion 4A of the accumulation adjusting portion 4 with respect to the division surface F is set to 0.1 mm, and the yarn Y is inserted into the yarn path. After threading, the upper and lower molds are
1 and fixed closely.

Then, 54 denier polyamide filament yarn of 16 denier is supplied to the apparatus from the yarn path.
When superheated steam at a pressure of 8 kg / cm ² .G and a temperature of 240 ° C. was injected, no steam leaked from the split surface F of both types. In addition, when the device was disassembled and disassembled for cleaning the inside, it could be easily disassembled, and no clogging or catching of the thread occurred in the device. Then, when reassembled and subjected to the same crimping as described above, no steam leakage occurred as in the previous case.

In the present invention, the elastic member 5 shown in FIG. 3 is supported by a bolt 8 provided on a mold, and the elastic member 5 and the stuffer 7 fixed to the elastic member 5 are advanced and retracted by the rotation of the bolt. After the assembly of the apparatus, the division surface S can be brought into close contact with the division surface S (not shown) of the stuffer portion by rotating the bolt.

Further, as an apparatus to which the present invention can be applied, a heated fluid injection nozzle portion and the stuffer portion each have a type in which a yarn is wound in a form in which the heating fluid injection nozzle portion and the stuffer portion are divided into two by a dividing surface along the axial direction of the yarn path. Although the shrinking device has been described, the present invention is not limited to this, and the heating fluid injection nozzle portion is not divided into two along the axial direction of the yarn path, and only the stuffer portion is formed of the yarn path. The present invention can also be applied to a yarn crimping device having a mold divided into two by a dividing plane along the axial direction. In this case, the upper mold A and the lower mold B of the heating fluid injection nozzle portion of FIG. The portion supporting the bolt 8 of the upper die A of the stuffer portion is used as a support for the bolt 8.

The above-described apparatus of the present invention can be used alone, but is usually used as an apparatus in which several tens are arranged.

[0036]

On the other hand, the spring 5 and the leaf spring 6 were removed from the conventional apparatus, that is, the apparatus of the above embodiment, so that the stuffer portion 2 could not be elastically supported from the upper die A, and the processing conditions were completely the same as those of the above embodiment. When the crimping process is performed, steam leakage occurs at the divided surface F, and the single yarn sometimes enters into the gap, and the plug is hooked, so that the plug cannot be discharged stably. The crimpability and dyeability were uneven in the direction.

[0037]

As described above, the yarn crimping apparatus according to the present invention can provide the following excellent effects.

In assembling the yarn crimping device, 2
Even if the divided mold, that is, the divided surface between the upper mold and the lower mold has a slight displacement or angle deviation, the exhaust part and the accumulation adjusting part of the stuffer part are either the upper mold or the lower mold. Since the stuffer portion is movably supported by the elastic member via the elastic member, the elastically supported stuffer portion is securely brought into close contact with the divided surface of the other stuffer portion.

Therefore, the division surface of the crimping device may be a rough surface which does not require assembling precision and skill, and the assembling is very simple. In addition, a good adhesion state can be obtained also on the split surfaces of both molds, so that the thread is not caught on the split surfaces.

Since the crimping device can be divided into two parts by bolts or other known attaching / detaching means, the threading work on the device becomes easy, and the division and assembly of the crimping device become easy, and the device becomes jammed. Removal and cleaning of foreign matter such as lint and dust are simplified.

[Brief description of the drawings]

FIG. 1 is a schematic longitudinal sectional view of an embodiment of the device according to the present invention.

FIG. 2 is a schematic right side view of the apparatus of FIG.

FIG. 3 is a sectional view of the device in FIG.

FIG. 4 is a sectional view of the device in FIG.

FIG. 5 is a schematic front view of the spring 5 of FIG. 2;

FIG. 6 is a schematic right side view of the spring 5 of FIG. 5;

[Explanation of symbols]

 1: Heated fluid injection nozzle unit 1a: Yarn path 1b: Supply hole 1c: Injection nozzle 1d: Injection path 2: Staffer unit 3: Exhaust unit 4: Deposition adjustment unit 5: Spring (elastic member) 6: Crimping device 11: Bolt (removal means) A: Upper die B: Lower die F, S: Dividing surface Y: Yarn

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) D02G 1/20 D02G 1/12 D02G 1/16

Claims (3)

(57) [Claims] 1. A heating fluid injection nozzle having a yarn path through which a yarn passes, a heating fluid injection nozzle opening to the yarn path, and an injection path for interlacing the yarn, and communicating with the heating fluid injection nozzle. An exhaust unit for exhausting the heating fluid from the entangled yarn, and a stuffer unit having a deposition adjusting unit for buckling and accumulating the yarn, wherein the heating fluid injection nozzle unit and the stuffer unit are provided. And a portion having a mold divided into two by a dividing surface along the axial direction of the yarn path, and a detachable means for relatively pressing the two molds toward the dividing surface or releasing the pressing. In the crimping device, the stuffer portion in at least one of the two divided molds is movably supported by an elastic member with the mold, and the divided surfaces of the stuffer portions are brought into close contact with each other. Characteristic crimping of yarn Apparatus. 2. The stuffer portion in the mold is projected to a position where the divided surfaces of the stuffer portions are brought into close contact with each other before the divided surfaces of both dies are brought into close contact with each other during the pressing process by the attaching / detaching means. The yarn crimping apparatus according to claim 1. 3. The exhaust unit and the deposition adjusting unit,
2. The method according to claim 1, wherein the element is integrated or divided.
Yarn crimping machine.