JPS62149926A - Apparatus for crimping processing of thermoplastic syntheticfiber yarn - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention]

<Industrial Application Field> The present invention relates to a crimping device for thermoplastic synthetic fiber yarn, and more specifically, the threading process can be carried out quickly and reliably, and has high winding performance. The present invention relates to a crimping apparatus for thermoplastic synthetic fiber yarn, which is suitable for obtaining irregular three-dimensional crimped yarns having the following properties. <Prior Art> In recent years, methods using heated compressed fluid have been increasingly used to produce crimped yarns for carpets in view of high-speed processability. Conventionally, a thermoplastic synthetic fiber yarn is collided with a heated compressed fluid against a gas-permeable collision wall using a heated compressed fluid injection nozzle to impart crimping and cooling, and then the crimped yarn is wound up. Regarding devices and methods, for example, Japanese Patent Application Laid-Open No. 57-183431 and Japanese Patent Publication No. 5B-283
This is proposed in Publication No. 10 and the like. However, in these methods, the processing speed of the yarn is higher than the speed of the yarn. Large change in properties over time, B, After weaving Carpella (a), crimp development force during dyeing is weak, fb1 pile shrinkage is large, t
・In order to improve this drawback, a crimping device in which a depositing section is connected to the back of the nozzle section is used, as described in Japanese Patent Application Laid-Open No. 59-66530. The so-called fluid pushing processing device, Japanese Patent Publication No. 56-22969 and Japanese Patent Publication No. 56-373
There has also been proposed a fluid intrusion cooling machining device which is compact by integrating the cooling process as described in Japanese Patent No. 39. By using crimped yarns obtained by these methods or by crimping, it has become possible to obtain excellent carpets, but these crimping devices do not require threading the yarn through the crimping device. It is not easy to thread the thread, and it has drawbacks such as the generation of a lot of thread waste because the thread cannot be threaded in a short time. To improve these shortcomings, Special Publication No. 58-42292
As shown in the schematic cross-sectional view of the conventional crimping device shown in FIG. A device has been proposed in which a part of the device, that is, an opening/closing portion, is opened to perform threading, and then closed after threading. Furthermore, as shown in the apparatus described in Japanese Patent Publication No. 53-24545, that is, the schematic perspective view of the conventional crimping apparatus shown in FIG. A device has been proposed in which the length direction is divided by a plane where the opening/closing part cannot be slid along the dividing plane in a direction perpendicular to the yarn introduction direction. Problems to be Solved by the Present Invention> However, in the devices shown in FIGS. 11 and 12, the slit 5 for discharging the heated fluid is The heating fluid is provided in the entire circumferential direction, so that the heating fluid is discharged around the entire circumference in the direction perpendicular to the yarn traveling direction e as shown by arrow A. Therefore, the equipment is complicated and the machining accuracy of the crimping equipment tends to vary between spindles, making it difficult to obtain uniformly crimped yarn and uniform carpet products. In addition, it is difficult to assemble the crimping device 1, and only a certain number of skilled workers are required to assemble it.

[It had drawbacks such as having to rely on it and taking a long time to assemble it. Furthermore, when threading the crimping device 1, when opening/closing the opening/closing part 4, deformation of the grate 5 is likely to occur due to opening/closing of the plate 5 that forms the slit 6. As the spacing between the slits changes and the yarn enters the slit from the wide part of the slit, it descends, reaching the narrow part and being compressed between the plates, resulting in single yarn breakage. This has the disadvantage of causing problems such as thread breakage and thread breakage, which impairs continuous operation. 6 is a thread introduction hole, and 24 is an air seal. The object of the present invention is to eliminate such conventional drawbacks, and to provide a method of crimping thermoplastic synthetic fibers that is easy to work with, has good work precision, is easy to assemble, and has good workability for thread hooking. The goal is to provide equipment. <Means and effects for solving the problems> As a result of intensive study on these points, the inventors found that the fluid discharge direction of the yarn accumulation chamber does not need to be discharged in the entire circumferential direction.
It has been found that ejection in a limited direction does not affect crimping characteristics, carpet quality, and carpet integrity. In addition, since the fluid does not have to be exhausted in the entire circumferential direction, undesirable changes in the fluid discharge surface due to opening and closing of the threading device can be prevented, and the number of parts in the crimping device can be reduced. We discovered that the parts can be easily machined and precision can be improved, and that even beginners can easily assemble them in a short time without any difference between the nozzle weights. That is, the object of the present invention described in item (-) is achieved by the following configuration. The structure of the present invention is such that a nozzle V section and a stacking section are provided in the traveling direction of the thermoplastic synthetic fiber yarn to form a communicating yarn path, and the nozzle section is heated and compressed toward the yarn path. In the thermal iJ plastic synthetic fiber yarn crimping apparatus, which is provided with a spouting hole for spouting fluid, and is provided with a yarn deposition chamber, [1J] It has a fluid discharge surface composed of a plurality of slits and a non-discharge wall surface that does not discharge fluid around the periphery in a direction perpendicular to the traveling direction of the yarn, and the core non-contact and exit wall surface is in the traveling direction of the yarn. It is provided on one side of the periphery in the perpendicular direction, or on two opposite surfaces, and the entire periphery (the ratio of
7%, and the yarn accumulation chamber is formed to be openable and closable by dividing or moving a non-discharging wall surface. This will be explained in detail below using the drawings. FIG. 1 is a schematic diagram showing a process for producing a crimped yarn using the crimping apparatus of the present invention. 2 to 10 all relate to the crimp device according to the present invention, and FIG. 2 is a schematic vertical sectional view of the vertical slit type crimp device. FIG. 6 is a longitudinal cross-sectional view of Ir1-ffl in FIG. 2, taken in the direction of arrows. FIG. 4 is a cross-sectional view of the apparatus shown in FIGS. 2 and 3, with the lid open. FIGS. 5 and 6 are schematic cross-sectional views showing other examples of the vertical slit type crimping device. Figures 7 and 9 are schematic cross-sectional views of the horizontal cross-linking 1 to type crimping equipment, Figure 8 is a cross-sectional view taken along the ■-■ arrow in Figure 7, and Figure 10 is a cross-sectional view of Figure 9. It is a XX cross-sectional view. In the crimping process, for example, as shown in FIG. 1, the spun thermoplastic synthetic fiber yarn Y is stretched and preheated by a heated drawing roller 31, and is then fed into the crimping device 1 in an overfeed state. The yarn is supplied, crimped using a heated compressed fluid, and then heat-treated in the state of a crimped yarn mass, cooled by a cooling device 32e, taken up by a take-up roll 33, and applied with an iJ force using a stretch roll 34. Give it and loosen the tangles, etc., and wine goo 35? It gets wound up. The cooling device 62 is a suction type rotating filter,
Alternatively, it may be a cold air blowing type device integrated with the crimping device 1. Furthermore, in producing low-crimp yarn, a hot air blowing type device integrated with the crimping device 1 may be used without providing the cooling device 32. 2 to 4, the crimping device 1 shown in FIG.
(A nozzle part 7 and a depositing part 8 are provided on the other side, and a yarn path 9 communicating with the nozzle part 7 and the depositing part 8 is formed. The nozzle part 7 is heated and compressed toward the yarn path 9. A jet hole 10 for spouting fluid is provided.Heated compressed fluid is supplied to the jet hole 10 through a heated compressed fluid supply port 11.The yarn introduced from the yarn introduction hole 6 is The heated compressed fluid ejected from the jet hole 10 is plasticized and opened, and is pushed into the yarn deposition chamber 2 of the deposition section 8. In the yarn deposition chamber 2, most of the heated compressed fluid is is discharged from the plurality of plates 5 (thus forming slits 6), and due to the action of the discharge, the fluid is rapidly depressurized and expands, thereby imparting crimp to the yarn. The yarn pushed into the yarn stacking chamber 2 is buckled and crimped by colliding with the yarn that has arrived earlier, that is, the crimped yarn mass, and sequentially becomes a crimped yarn mass. The fluid is subjected to heat treatment and then discharged from the crimped yarn outlet 12 by the pressing force of the fluid.
and is discharged from the crimping device 1 via the fluid discharge port 14. The yarn accumulating chamber 2 has a plurality of plates 5) arranged around the periphery in a direction perpendicular to the traveling direction Q of the yarn.
Fluid discharge surfaces 15(a), 15(1)l, 1 formed with
5 (has a non-discharge wall surface 16 that does not discharge cl and fluid. The non-discharge wall surface 16 also serves as a lid 17. When the non-discharge wall surface 16 and the lid 17 also serve as the lid 17, the lid 17 and the fluid It is desirable to provide a plate protection section 18 (al, 18 (b)) between the discharge surface +5 (al, (bl, (cl), and by providing the plate protection section 18 (fa), (bl), the lid 17 can be opened and closed. The non-discharge wall surface 16 can be opened and closed by using an opening and closing mechanism (not shown), for example, by opening and closing the lid 17 back and forth using an air cylinder, by opening and closing the lid 17 laterally, or by using a hinged door, etc. 19 is a plate fixing screw, 20 is a spacer provided in contact with the plate 5 to form the slit 3. 21 is a plate fixing screw 19, and the plate fixing screw 19 is used to attach the plate 5 and the spacer. This is a plate fixing support part for assembling the spacer 20. Spacers 20 having different thicknesses are used depending on the width of the slit 3 to be formed. The thickness of the plate 5 is preferably 0.5mm to 2.0M, more preferably 0.8mm to 15m.If the thickness of the plate 5 is thicker than 2.0M, the discharge area for discharging the fluid is small. As the amount decreases, it becomes impossible to discharge the gas uniformly, and as rapid expansion of the gas is difficult to occur, the yarn may not be crimped, and the properties of the resulting crimped yarn may become non-uniform. If the thickness of the grate 5 becomes thinner than 0.5 m, the plate 5 will deform and assembly work will be difficult. Also, the thickness of the spacer 20 at the fluid discharge surface 15 (al, (bl, io+), that is, the slit The width of 6 is preferably 12m to 0.7m, more preferably α2 to IL
5M is good. When the thickness of the spacer 20 is greater than 0.7 M,
In other words, when the width of the slit 6 becomes wider, a part of the yarn being crimped gets into the space between the slits, and the yarn does not come off at the exit of the crimped yarn, causing uneven crimping and single yarn breakage, which deteriorates the quality of the carpet. Occasionally, thread breakage occurs, hindering continuous operation. Moreover, when the thickness of the spacer 20 becomes thinner than 12 am, the discharge area for discharging the fluid decreases, and
Since uniform evacuation cannot be performed and rapid expansion of the gas is difficult to occur, the yarn may not be crimped, and the properties of the resulting crimped yarn may be non-uniform. Note that the shape of the slit 3 is not limited to the combination of the plate 5 and the spacer 20. Reference numeral 22 denotes a back cover of the main body of the crimping device 1, which is opened and closed when the yarn depositing chamber 2 is attached to and removed from the main body. FIG. 5 shows a non-discharging wall surface 16 (a) that faces one surface perpendicular to the direction of yarn movement in the yarn accumulation chamber 2.
, (b), one non-discharge wall surface 16fal also serves as the lid 17 and can be opened and closed, and the thread hook is connected to the non-discharge wall surface + 6 (
This device is designed to open the al, and by providing the non-discharge wall surface 16ta+, (b) as described above, the assembly work is further facilitated, compared to the one shown in Fig. 2.3.4. Plate 5, spacer 20 approximately 3
It can be assembled in a short time and with high precision. The names of each part are the same as those shown in FIGS. 2-4. Similarly to FIG. 5, FIG.
l and none, the non-discharge wall surface 16 (01, (d), 16 (
θ), ffl is a crimping device in which one side of the ffl is divided so that the yarn hook can be opened and closed at different times, and the yarn accumulation chamber 2 has a fluid discharge surface in a direction perpendicular to the yarn traveling direction 1. One non-discharge wall surface 16 (0), (θ) on both sides of 15 (al) is provided in a U-shape, and one non-discharge wall surface 16 (0), (θ) on both sides of fluid discharge surface 15 (1 non-discharge wall surface on both sides of bl + 6 (dl, ffl Combine them with the ones provided in a U-shape, and make the two facing each other on the - side.
A mouth-shaped yarn depositing chamber 2 is formed, with one surface serving as a fluid discharge surface and the other two opposing surfaces serving as non-discharge wall surfaces. FIG. 7 shows another embodiment of the crimp device of the present invention, and is a schematic vertical sectional view of the horizontal slit type crimp device. FIG. 8 is a cross-sectional view taken along the line m--■ in FIG. 7. In the crimping device 1 shown in FIGS. 7 and 8, similarly to the crimping device 1 shown in FIG. Discharge wall 1
6(cl, (dl, te+, (ri), and the non-discharge wall surface 16(cl, (dl, 16(e), tfl) can be opened and closed by dividing the crimping device. ,
The horizontal slit type crimping device 1 is also similar to that shown in FIG.
The yarn deposition chamber 2 has a fluid discharge surface 15 (al) and a non-discharge wall surface 16 (c
l, (el is provided in a U-shape, and non-discharge wall surfaces +6H1, (f
In combination with the L shaped like a U-shape,
A mouth-shaped yarn depositing chamber 2 is formed, with one of the two opposing surfaces serving as a fluid discharge surface and the other two opposing surfaces serving as a non-discharge wall surface. In the case of horizontal slit type crimp processing equipment. The thickness of the plate 5 at the fluid discharge surface 15(a), fbl of the yarn deposition chamber 2 can be made larger in range than in the case of a vertical slit type crimping device [1.5 to 50 m]. , more preferably α8 votes to 2.5 votes. If the thickness of the plate 5 becomes thicker than 6.0 mm, the discharge area for discharging the fluid decreases and uniform discharge becomes impossible, resulting in uneven properties of the obtained crimped yarn as described above. It may happen. Moreover, when the thickness of the plate 5 becomes thinner than 0.5 mm,
The plate 5 is easily deformed, making assembly difficult. The thickness of the spacer 2G at the fluid discharge surfaces 15ial and +bl, that is, the width of the slit 3 is 12g++~Q
, 7N is good, preferably 0.2 wa to α5. When the thickness of the spacer 20 becomes thicker than 0.7 mm, that is, when the width of the slit 3 becomes wider, a part of the yarn being crimped enters between the slits, causing a crimped yarn mass and yarn accumulation. The friction with the wall of the chamber 2 increases, causing uneven crimp and single yarn breakage, which deteriorates the quality of the carpet, and in some cases, yarn breakage due to yarn clogging, which impedes continuous operation. Also, if the thickness of the spacer 20 becomes thinner than 02,
As the discharge area for fluid discharge becomes smaller and uniform exhaustion is not possible, rapid expansion of the gas is less likely to occur, so the yarn may not be crimped and the properties of the resulting crimped yarn may be non-uniform. It may become. 9 and 10 show other embodiments of the horizontal slit type crimp device of the present invention. In the winding m processing device e, the yarn depositing chamber 2 has the second to
4, one surface of the yarn accumulation chamber 2 is a non-discharge wall surface 16 that does not discharge fluid and also serves as a lid 17, and the other surface is a ring-shaped plate with a part cut out. 5
, the spacer 20 and the plate fixing screw 19 form a slit 3 for discharging fluid, and are stacked in the direction of yarn travel, forming a fluid discharging surface 15, and assembled to the main body of the crimping device 1. It is formed by being The shape of the yarn depositing chamber 2 is not limited to the above-mentioned shape, but can be easily changed by changing the shape of the plate, for example, it can be made into a wide shape. <Example (Example 1) The crimping apparatus of the present invention shown in FIGS. 2 to 4, specifically, the length of the nozzle part 7 is 60 m, and the length of the deposit part 8 is a o m
, the total circumference length of the cross section of the yarn accumulation chamber 2 is 36.4 m (9
,4U
, 17 plates 5 with a thickness of 1.0 mm are assembled without being adjacent to each other, forming a spacing of 13 m between the slits 6, and plate protection parts 18 (a), (with a thickness of 2.0 m in bl) are assembled.
Using wx, nylon 6 (drawn yarn fineness 1100 deniers, 68 filaments) was spun, stretched, and then crimped and wound.
300 denier) V) was woven into a carpet and then dyed and evaluated. As a result, the parts of the crimping device were easy to work with, could be processed with high precision, and were easy to assemble. In addition, the light application at the time of start-up had good properties and the crimping process was stable, and there was no difference between the nozzle weights in the crimping characteristics, and the quality and quality of the carpet were good. (Example 2) Nylon 66 (drawn yarn M 1100 denier, 68 filament) was spun using the same apparatus as in Example 1, drawn, and then crimped.Nyker head evaluation was performed on carpet quality. Both quality was good. (Example 5) Similarly, using the apparatus shown in Example 1, polyethylene terephthalate spun-dyed drawn yarn (drawn yarn fineness 1350 denier, 1
44 filament) is processed into a carpet (・
When the carpet was evaluated after being heat treated after weaving, it was found that both the quality and the quality of the carpet were good. (Examples 4 to 7) The crimping apparatus of the present invention shown in FIGS.
%, all other conditions were the same as in Example 1,
As a result of the study using nylon 6, it was found that all of them had good workability of equipment parts, ease of assembly, ease of threading, and crimping processability, and could be crimped with no difference between nozzle weights in crimping characteristics, and had excellent carpet quality. Both quality was good. (Comparative Example 1) As a result of examining the above-mentioned nylon 6 using the known crimping device shown in FIG. 19- Single thread breakage often occurred, resulting in poor workability. (Comparative Example 2) Nylon 6 was crimped using the known device shown in Fig. 12 in the same manner as described above, but the workability was good, but the manufacturing of parts was difficult, the precision was poor, and the difference between the nozzle weights was large. It came out. (Comparative Example 3) One of the fluid discharge surfaces of the crimping apparatus of the present invention shown in FIG. 6 is closed, and the flow direction is set as a non-discharge wall surface (74% of the non-discharge wall surface), and all other conditions are the same as in Example 1. When the carpet was crimped in the same manner as above, there were many crimping spots and the quality and quality of the carpet were poor. (Comparative Example 4) In the crimping apparatus shown in FIGS. 9 and 10, the non-discharge wall surface is made smaller and the ratio is set to 1696,
When crimping was carried out under all other conditions in the same manner as in Example 1, the single yarn was caught. <Effects of the Invention> As described above, the crimping device of the present invention improves crimping characteristics and carpet quality by limiting the direction of fluid discharge from the yarn depositing chamber without discharging it in the entire circumferential direction. , quality is improved, and deformation of the grate at the fluid discharge surface can be prevented by opening and closing the position where the fluid is not discharged. Furthermore, the number of parts in the crimping device can be reduced, the parts can be easily machined, precision can be improved, and even beginners can easily assemble the parts in a short time without any difference between the nozzle weights. play.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram showing a process for producing a crimped yarn using the crimping apparatus of the present invention. 2 to 10 all relate to the crimping device according to the present invention, and FIG. 2 is a schematic vertical sectional view of the vertical slit type crimping device. FIG. 3 is a vertical sectional view taken along arrows ``--'' in FIG. FIG. 4 is a cross-sectional view of the apparatus shown in FIGS. 2 and 3 with the lid opened. FIGS. 5 and 6 are schematic cross-sectional views showing other examples of the vertical slit type crimping device. 7 and 9 are schematic cross-sectional views of the horizontal slit type crimping device, FIG. 8 is a cross-sectional view taken along arrows ■-■ in FIG. 7, and FIG. - It is a cross-sectional view taken along the X arrow. FIG. 11 is a schematic cross-sectional view of a known crimping device;
The figure is also a schematic perspective view of a known crimping device. (1) Crimping device, (2) yarn deposition chamber, (3) slit, (4) opening/closing section, (5) plate, (6) yarn introduction hole, (7) nozzle section, (8) deposition Part, (9) Yarn path, 00 fluid jet hole, O11 heating compressed fluid supply port, (6) Curling yarn outlet, OI fluid discharge path, 0 → fluid discharge port, 0υ fluid discharge, aQ non-discharge wall surface, θ cover, (g) plate protection part,
OI plate fixing screw, spacer, (21)
Plate fixing support part, (22) Back cover, (23) Sealing part, (24) Air cylinder, (31) Heating stretching roll, (32) Cooling device, (65) Pulling roll, (6
4) Stretch roll, (35) Wine goo blind 5 Figure 1, Claims section of the specification for procedural amendment March 20, 1985

Claims (1)

[Claims] A nozzle portion and a depositing portion are provided in the direction of travel of the thermoplastic synthetic fiber yarn to form a communicating yarn path, and the nozzle portion is provided with a jetting hole for jetting heated compressed fluid toward the yarn path. In the apparatus for crimping thermoplastic synthetic fiber yarn, the accumulating section is provided with a yarn accumulating chamber, the periphery of the yarn accumulating chamber in a direction perpendicular to the traveling direction of the yarn, It has a fluid discharge surface composed of a plurality of slits and a non-discharge wall surface that does not discharge fluid, and the non-discharge wall surface is one of the peripheral surfaces in the direction perpendicular to the traveling direction of the yarn, or two opposing surfaces. A thermoplastic synthetic fiber yarn provided on a surface, having a ratio of 20% to 67% of the entire circumference, and wherein the yarn depositing chamber is formed to be openable and closable by dividing or moving a non-discharge wall surface. crimping equipment.